WO2020030145A1 - Procédé de transmission de données, station de base et terminal - Google Patents

Procédé de transmission de données, station de base et terminal Download PDF

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Publication number
WO2020030145A1
WO2020030145A1 PCT/CN2019/100070 CN2019100070W WO2020030145A1 WO 2020030145 A1 WO2020030145 A1 WO 2020030145A1 CN 2019100070 W CN2019100070 W CN 2019100070W WO 2020030145 A1 WO2020030145 A1 WO 2020030145A1
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WIPO (PCT)
Prior art keywords
information
terminal
resource
uplink data
base station
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PCT/CN2019/100070
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English (en)
Chinese (zh)
Inventor
刘锟
戴博
沙秀斌
方惠英
杨维维
边峦剑
胡有军
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present invention relate to, but are not limited to, a data transmission method, a base station, and a terminal.
  • MTC Machine Type Communication
  • NB-IoT Near Band Internet of Things
  • MTC and NB-IoT terminals User Equipment, UE
  • MTC and NB-IoT communication standard protocols Release 15 introduced early data output (Early Data Transmission (EDT) technology, which allows the UE to use Message 3 (Msg3) to transmit data to the base station in the process of random access (Random Access), so that the UE does not need to enter the RRC connection state (Radio Resource Control).
  • EDT Early Data Transmission
  • Msg3 Message 3
  • RRC connection state Radio Resource Control
  • RRC-CONNECT the Chinese name is the radio resource control connection state
  • RRC-IDLE Radio Resource Control IDLE
  • the Chinese name is the radio resource control idle state
  • EDT can only support a UE sending a data packet to the base station
  • the EDT function cannot support the UE when there are multiple packets sent at intervals.
  • the UE also needs to send a random access channel preamble (Physical Random Access Preamble, PRACH Preamble, also known as Msg1) to the base station, and receive a random access response message (Random AccessResponse, Also called Msg2), that is, each time the EDT sends a data packet, the UE needs to send Msg1 and receive Msg2 messages, which will also consume the power of the UE.
  • PRACH Preamble Physical Random Access Preamble
  • Msg2 Random Access Response message
  • an embodiment of the present invention provides a data transmission method, including: a base station receiving first uplink data sent by a terminal, where the first uplink data is one of the following: the terminal sends in G first resources Uplink data of the uplink data transmitted by the terminal in G first resources; where G is an integer greater than or equal to 1, and the first resource is configured by the base station for uplink data transmission Resources occupied by an uplink channel; the base station sends first information to the terminal according to the received first uplink data, the first information includes at least one of the following: the first uplink data successfully received by the base station Identification information of the corresponding terminal, and resource scheduling information for retransmission of the first uplink data.
  • An embodiment of the present invention further provides a data transmission method, including: a terminal sending first uplink data to a base station, where the first uplink data is one of the following: uplink data sent by the terminal in G first resources, Retransmission data of uplink data sent by the terminal in G first resources; where G is an integer greater than or equal to 1, and the first resource is occupied by an uplink channel configured by the base station for uplink data transmission Resources; the terminal receiving first information sent by the base station according to the received first uplink data, the first information including at least one of the following: a terminal corresponding to the first uplink data successfully received by the base station Identification information and resource scheduling information for retransmission of the first uplink data.
  • An embodiment of the present invention further provides a base station, including: a receiving unit, configured to receive first uplink data sent by a terminal, where the first uplink data is one of the following: Uplink data, retransmission data of uplink data sent by the terminal in G first resources; where G is an integer greater than or equal to 1, and the first resource is an uplink configured by the base station for uplink data transmission A resource occupied by a channel; a sending unit configured to send first information to the terminal, where the first information includes at least one of the following: identification information of a terminal corresponding to the first uplink data successfully received by the base station, The resource scheduling information for retransmission of the first uplink data is described.
  • An embodiment of the present invention further provides a terminal, including: a sending unit configured to send first uplink data to a base station, where the first uplink data is one of the following: uplinks sent by the terminal in G first resources Data, retransmission data of uplink data sent by the terminal in G first resources; where G is an integer greater than or equal to 1, and the first resource is an uplink channel configured by the base station for uplink data transmission Occupied resources; a receiving unit, configured to receive first information sent by the base station, where the first information includes at least one of the following: identification information of a terminal corresponding to the first uplink data successfully received by the base station, The resource scheduling information for retransmission of the first uplink data is described.
  • An embodiment of the present invention further provides a base station, including a memory, a processor, and a computer program stored on the memory and executable on the processor.
  • the base station is implemented. The data transmission method performed.
  • An embodiment of the present invention further provides a terminal, including a memory, a processor, and a computer program stored on the memory and executable on the processor.
  • the terminal is implemented. The data transmission method performed.
  • An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores an information processing program, and when the information processing program is executed by a processor, the data transmission method of any one of the foregoing is implemented. step.
  • embodiments of the present invention provide a data transmission method, a base station, and a terminal.
  • One of the methods includes: the base station receives first uplink data sent by the terminal, and the first uplink data is one of the following: The uplink data sent by the terminal in the G first resources, and the retransmission data of the uplink data sent by the terminal in the G first resources; and the base station sends the data to the terminal according to the received first uplink data
  • the first information includes at least one of the following: identification information of a terminal corresponding to the first uplink data successfully received by the base station, and resource scheduling information for retransmission of the first uplink data. In this way, it can support the UE to implement the interval sending data packet service, and it can save UE power more than EDT.
  • FIG. 1 is a schematic flowchart of a data transmission method according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic flowchart of a data transmission method according to a second embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a data transmission method according to a third embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a data transmission method according to a fourth embodiment of the present invention.
  • 5 is a schematic diagram of multiple uplink channel resources using FDM and TDM multiplexing
  • FIG. 6 is another schematic diagram of multiple uplink channel resources using FDM and TDM multiplexing
  • FIG. 7 is a schematic diagram of a downlink control channel search space in an FDD system
  • FIG. 8 is another schematic diagram of a downlink control channel search space in a TDD system
  • FIG. 9 is another schematic diagram of a downlink control channel search space in an FDD system.
  • FIG. 10 is another schematic diagram of a downlink control channel search space in an FDD system
  • FIG. 11 is a schematic flowchart of a data transmission method according to Embodiment 5 of the present invention.
  • FIG. 12 is a schematic structural diagram of a base station according to Embodiment 9 of the present invention.
  • FIG. 13 is a schematic structural diagram of a terminal according to Embodiment 10 of the present invention.
  • FIG. 14 is a schematic structural diagram of a base station according to Embodiment 11 of the present invention.
  • FIG. 15 is a schematic diagram of a terminal according to Embodiment 12 of the present invention.
  • the Early Data Output (EDT) technology only supports the UE to send a data packet to the base station, and each time the EDT sends a data packet, the UE needs to send Msg1 and receive Msg2 messages. Therefore, there is a need for a new data transmission scheme, which can support the UE to implement the interval sending data packet service, and can save UE power more than EDT.
  • EDT Early Data Output
  • FIG. 1 is a schematic flowchart of a data transmission method according to a first embodiment of the present invention.
  • the data transmission method includes: Step 101, a base station receives first uplink data sent by a terminal, where the first uplink data is one of the following: uplinks sent by the terminal in G first resources Data, retransmission data of uplink data sent by the terminal in the G first resources.
  • G is an integer greater than or equal to 1
  • the first resource is a resource occupied by an uplink channel configured for uplink data transmission by the base station.
  • Step 102 The base station sends first information to the terminal according to the received first uplink data.
  • the first information includes at least one of the following: a terminal corresponding to the first uplink data that the base station successfully receives. Identification information and resource scheduling information for retransmission of the first uplink data.
  • the method further includes: the base station sends at least one set of configuration information of the first resource to the terminal.
  • each set of configuration information of the first resource corresponds to a first level
  • the first level includes one of the following: a coverage enhancement level, a repeat transmission level of a random access channel, a repeat transmission number of the random access channel, The number of repeated transmissions corresponding to the uplink data transmission, the maximum number of bits in the transport block, and the resource location for transmitting the uplink data.
  • multiple sets of the configuration information of the first resources correspond to the same first level.
  • the first information is carried in the downlink control information DCI or the first information is carried in the downlink channel and the scheduling information of the downlink channel is indicated by the downlink control information DCI.
  • the DCI is scrambled using cyclic redundancy check (Cyclic Redundancy Check, CRC) and the CRC scrambling information used includes at least one of the following: a first identifier, a resource identifier, and a cell wireless network temporary identifier C-RNTI.
  • CRC Cyclic Redundancy Check
  • the first identifier includes at least one of the following: an identifier configured by the base station, an identifier common to multiple terminals, a set of identifiers corresponding to configuration information of the first resource, and an identifier corresponding to the first level.
  • the identification information of the terminal corresponding to the first uplink data successfully received by the base station includes identification information of at least one terminal, and the identification information of the terminal includes at least one of the following: a cell wireless network temporary identifier C-RNTI, International Mobile Subscriber Identity IMSI, Temporary Mobile Subscriber Identity TMSI, Service-Temporary Mobile Subscriber Identity S-TMSI.
  • the first information when the first information includes identification information of a terminal corresponding to the first uplink data that the base station successfully receives, the first information further includes at least one of the following: matches the identification information of the terminal Scheduling information for downlink data transmission of a terminal; temporary C-RNTI information matching the identification information of the terminal; C-RNTI information matching the identification information of the terminal; a terminal matching the identification information of the terminal Configuration information of the downlink control channel search space.
  • the first information When the first information includes resource scheduling information for retransmission of the first uplink data, the first information further includes a second identifier.
  • the second identifier is used for CRC scrambling of downlink control information DCI, where the DCI includes at least one of the following: First: downlink control information DCI of the first information; downlink control information DCI including scheduling information of a downlink channel, wherein the downlink information carries the first information.
  • the first information When the first information includes identification information of a terminal corresponding to the first uplink data that the base station successfully receives, the first information further includes a third identifier.
  • the type of the first information includes a first type and a second type, where the first information of the first type includes identification information of a terminal corresponding to the first uplink data that the base station successfully receives, and the second type
  • the first information includes the resource scheduling information for retransmission of the first uplink data.
  • the first indication information indicates the type of information carried in the first information.
  • the first indication information is carried in at least one of the following: downlink control information DCI including first information; downlink control information DCI including scheduling information of a downlink channel, and the downlink channel is used to carry the first information information.
  • the transport block size TBS corresponding to the first message of the first type and the transport block size TBS corresponding to the first message of the second type are the same.
  • the type of the first information includes a first type and a second type, where the first information of the first type includes identification information of a terminal corresponding to the first uplink data that the base station successfully receives, and the second type
  • the first information includes the resource scheduling information for retransmission of the first uplink data.
  • the type of the first information is distinguished by at least one of the following methods: Method 1: The first type of the first message and the second type of the first message have different transport block sizes; Method 2: The first type of the first message is included.
  • the DCI of a message is different from the CRC scrambling information used by the DCI including the first message of the second type;
  • Method 3 The CRC scrambling information used by the DCI where the scheduling information corresponding to the downlink channel of the first message of the first type is located
  • the CRC scrambling information used by the DCI where the scheduling information corresponding to the downlink channel carrying the first message of the second type is located is different.
  • the type of the first information includes a first type and a second type, where the first information of the first type includes identification information of a terminal corresponding to the first uplink data that the base station successfully receives, and the second type
  • the first information includes the resource scheduling information for retransmission of the first uplink data.
  • the type of the first information is indicated by the second instruction information.
  • the second indication information is T bits of information in the first information, and T is an integer greater than or equal to 1.
  • the type of the first information when the T bit information is in a predetermined format, the type of the first information is a first type; otherwise, the type of the first information is a second type; or when the T bit information is When the format is predetermined, the type of the first information is the second type; otherwise, the type of the first information is the first type.
  • the transport block size TBS corresponding to the first message of the first type and the transport block size TBS corresponding to the first message of the second type are the same.
  • the method further includes: configuring, by the base station, a search space of a downlink channel carrying the DCI, and the number of search spaces of the downlink channel is at least one.
  • FIG. 2 is a schematic flowchart of a data transmission method according to a second embodiment of the present invention.
  • the data transmission method includes: Step 201: A terminal sends first uplink data to a base station, where the first uplink data is one of the following: uplink data sent by the terminal in G first resources Retransmission data of uplink data sent by the terminal in G first resources, where G is an integer greater than or equal to 1, and the first resource is an uplink channel occupation configured by the base station for uplink data transmission Step 202, the terminal receives first information sent by the base station according to the received first uplink data, the first information includes at least one of the following: the first uplink successfully received by the base station Identification information of the terminal corresponding to the data, and resource scheduling information for retransmission of the first uplink data.
  • the method further includes: the terminal receives at least one set of configuration information of the first resource sent by the base station.
  • each set of configuration information of the first resource corresponds to a first level
  • the first level includes one of the following: a coverage enhancement level, a repeat transmission level of a random access channel, a repeat transmission number of the random access channel, The number of repeated transmissions corresponding to the uplink data transmission, the maximum number of bits in the transport block, and the resource location for transmitting the uplink data.
  • multiple sets of the configuration information of the first resources correspond to the same first level.
  • the first level corresponding to the G first resources is the same as the first level of the terminal.
  • the first information is carried in the downlink control information DCI or the first information is carried in the downlink channel and the scheduling information of the downlink channel is indicated by the downlink control information DCI.
  • the DCI uses CRC scrambling and the scrambling information used includes at least one of the following: a first identifier, a resource identifier, and a cell wireless network temporary identifier C-RNTI.
  • the first identifier includes at least one of the following: an identifier configured by the base station, an identifier common to multiple terminals, a set of identifiers corresponding to configuration information of the first resource, and an identifier corresponding to the first level.
  • the identification information of the terminal corresponding to the first uplink data successfully received by the base station includes identification information of at least one terminal, and the identification information of the terminal includes at least one of the following: a cell wireless network temporary identifier C-RNTI, International Mobile Subscriber Identity IMSI, Temporary Mobile Subscriber Identity TMSI, Service-Temporary Mobile Subscriber Identity S-TMSI.
  • the first uplink data includes identification information of the terminal.
  • the method further includes: when the first condition is satisfied, the terminal performs uplink data transmission among G first resources available subsequently or the terminal sends a random access signal on subsequent available random access channel resources Or trigger the terminal to initiate random access.
  • the first condition includes at least one of: (1) the identification information of the terminal is not included in the identification information of the terminal corresponding to the first uplink data successfully received by the base station; (2) includes the The downlink control channel search space detection timeout corresponding to the downlink control information DCI of the first information expires; (3) The downlink control channel search space detection timeout of the downlink control information DCI times out, wherein the DCI includes a downlink carrying the first information Channel scheduling information; (4) The terminal does not detect the identification information of the terminal within the configured duration.
  • the first information includes only identification information of a terminal corresponding to the first uplink data that the base station successfully receives.
  • the method further includes: when the second condition is satisfied, the terminal performs retransmission of the first uplink data in G subsequent available first resources or the first uplink data transmission does not support retransmission.
  • the second condition includes at least one of: (1) the identification information of the terminal is not included in the identification information of the terminal corresponding to the first uplink data successfully received by the base station; (2) the first A time domain-frequency domain resource is not configured in the resource scheduling information for retransmission of uplink data or a valid time domain-frequency domain resource is not configured in the resource scheduling information for the retransmission of the first uplink data;
  • the downlink control channel search space detection of the downlink control information DCI of the first information has timed out; (4) the downlink control channel search space detection of the downlink control information DCI has timed out, wherein the DCI includes a downlink carrying the first information Channel scheduling information; (5)
  • the terminal does not detect the identification information of the terminal within the configured duration.
  • the method further includes: when the third condition is satisfied, the terminal performs at least one of the following operations: reselecting the first resource indicated by the configuration information of the first resource for uplink data transmission; Among the configuration information of at least one set of the first resources corresponding to the current first level, reselect a set of the first resources indicated by the configuration information of the first resources to send uplink data; corresponding to the next first level Among at least one set of configuration information of the first resource, a set of the first resource indicated by the configuration information of the first resource is selected for uplink data transmission.
  • the third condition includes: on the first resource corresponding to the current first level, after the terminal sends the first uplink data for the Mth time, the terminal includes all information included in the corresponding received first information.
  • the identification information of the terminal corresponding to the first uplink data successfully received by the base station does not include the identification information of the terminal, and M is an integer greater than or equal to 1.
  • the method further includes: when the fourth condition is satisfied, the terminal performs at least one of the following operations: the terminal considers that the first uplink data transmission fails; at least one set of the corresponding to the next first level In the configuration information of the first resource, a set of the first resource indicated by the configuration information of the first resource is selected for uplink data transmission; the terminal sends a random access signal on a random access channel resource or triggers the The terminal initiates random access.
  • the fourth condition includes at least one of the following: (1) On the first resource corresponding to the current first level, after the terminal sends the first uplink data for the Mth time, it receives the corresponding
  • the first information includes the identification information of the terminal corresponding to the first uplink data that the base station successfully received does not include the identification information of the terminal, and M is an integer greater than or equal to 1; (2) the current first uplink data
  • the first level corresponding to the first resource occupied by the transmission is L, where L is the index of the largest first level or the first level index configured by the base station; (3) the total number of times the terminal sends the first uplink data Is J, J is an integer number of times greater than or equal to 1; (4) at the current first level, the DCI search space detection timeout of the DCI carrying the first information has timed out; (5) at the current first level, the bearer of the DCI The downlink control channel search space detection times out, and the DCI includes scheduling information of a downlink channel carrying the first information.
  • the method further includes: when the fifth condition is satisfied, the terminal considers that the first uplink data transmission is successful.
  • the fifth condition includes at least one of the following: (1) the terminal does not detect resource retransmission information of the first uplink data within a configured duration; (2) the first uplink data In the downlink control channel search space corresponding to the data transmission, no resource scheduling information of the retransmission of the first uplink data is detected.
  • the base station receives uplink data through a pre-configured first resource, and the terminal sends uplink data through the first resource.
  • the UE When the UE is in RRC-CONNECT for uplink data transmission, it is no longer required Apply for additional resources.
  • the UE When the UE is in non-RRC-CONNECT (including RRC-IDLE) for uplink data transmission, it is no longer necessary to send Msg1 and receive Msg2 messages, but to directly send the uplink data using the first resource.
  • the base station can configure multiple groups of the G first resources at one time. When each data packet needs to be sent, the UE sends it in the corresponding G first resources. In this way, the UE does not need to send request information to request resources from the base station before sending data each time, which can save the power of the UE.
  • FIG. 3 is a schematic flowchart of a data transmission method according to a third embodiment of the present invention. As shown in FIG. 3, the data transmission method includes:
  • Step 301 The terminal sends the first uplink data to the base station.
  • the first uplink data is one of the following: the uplink data sent by the terminal in the G first resources, and the terminal in the G first resources. Retransmission data of the transmitted uplink data.
  • the terminal includes one or a group of terminals.
  • the first resource is configured by the base station, and the number of the configured first resources is at least one.
  • the first resource may adopt a multiplexing manner of time division multiplexing (TDM) and / or frequency division multiplexing (FDM) and / or code division multiplexing (CDM).
  • TDM time division multiplexing
  • FDM frequency division multiplexing
  • CDM code division multiplexing
  • the terminals may share the G first resources, wherein one terminal may use one or more first resources to send the first uplink data; preferably, one terminal only occupies the G first resources.
  • a first resource is used to send first uplink data.
  • the first uplink data sent by the terminal includes identification information of the terminal.
  • the identification information of the terminal includes at least one of the following: C-RNTI; IMSI (International Mobile Subscriber Identification Number); TMSI (Temporary Mobile Subscriber Identity); S-TMSI (Serving- Temporary (Mobile, Subscriber, Identity).
  • Step 302 The base station receives the first uplink data sent by the terminal.
  • the base station sends the configuration information of the first resource to the terminal.
  • the base station may configure at least one set of configuration information of the first resource, and each set of configuration information of the first resource corresponds to a first level.
  • the first level includes one of the following: a coverage enhancement level; a repeat transmission level of the random access channel; a number of repeated transmissions of the random access channel; a corresponding number of repeated transmissions during uplink data transmission; a maximum number of bits in the transmission block; A resource location for transmitting the uplink data.
  • One or more sets of the G first resources may be configured in a set of configuration information of the first resources corresponding to a first level.
  • multiple sets of configuration information of the first resource may also correspond to the same first level.
  • the base station may configure 5 sets of configuration information of the first resource, each of the 5 sets corresponds to a first level, the number of corresponding first levels is 3, and the numbers are first level 1 and first level 2, The first level 3, 2 of the 5 sets correspond to the first level 1, the other 2 sets correspond to the first level 2, and the last 1 set corresponds to the first level 3.
  • Step 303 The base station sends first information to the terminal according to the received first uplink data.
  • the first information includes at least one of the following: identification information of a terminal corresponding to the first uplink data successfully received by the base station, and resource scheduling information for retransmission of the first uplink data.
  • the first information may be carried in downlink control information DCI (Downlink Control Information) or the first information is carried in a downlink channel and the scheduling information of the downlink channel is indicated by the DCI.
  • DCI is carried on the downlink control channel.
  • the DCI may adopt CRC scrambling, and the scrambling information used includes at least one of the following: a first identifier; a resource identifier; and a C-RNTI (Cell Radio Network Temporary Identifier).
  • the first identifier includes at least one of the following: an identifier configured by a base station; an identifier common to multiple terminals; a set of identifiers corresponding to the configuration information of the first resource; and an identifier corresponding to a first level.
  • the resource identifier is calculated based on at least one of the following: a time domain location of the first resource; a frequency domain location of the first resource; and a coder or a set of coders corresponding to the first resource.
  • the role of the resource identifier is to identify the G first resources.
  • the C-RNTI may be configured by the base station for the terminal during the RRC connection establishment process.
  • the identification information of the terminal corresponding to the first uplink data that the base station successfully receives includes identification information of at least one terminal, and the identification information of the terminal includes at least one of the following: C-RNTI; IMSI (International Mobile SubscriberIdentificationNumber (International Mobile Subscriber Identity); TMSI (TemporaryMobileSubscriberIdentity); S-TMSI (Serving-TemporaryMobileSubscriberIdentity).
  • IMSI International Mobile SubscriberIdentificationNumber (International Mobile Subscriber Identity)
  • TMSI TemporaryMobileSubscriberIdentity
  • S-TMSI Server-TemporaryMobileSubscriberIdentity
  • the first information includes "identification information of the terminal corresponding to the first uplink data successfully received by the base station"
  • the first information further includes at least one of the following: (1) identification with the terminal Scheduling information for downlink data transmission of information matching terminals; (2) temporary C-RNTI (Temporary C-RNTI) information matching the identification information of the terminal; (3) C matching the identification information of the terminal -RNTI information; (4) configuration information of a downlink control channel search space of the terminal that matches the identification information of the terminal.
  • the first information packet when the first information includes "retransmission resource scheduling information of the first uplink data", the first information packet further includes: a second identifier.
  • the second identifier is used for CRC scrambling of DCI, where the DCI includes at least one of the following: ( 1) DCI of the first information of downlink control information; (2) DCI including scheduling information of a downlink channel, wherein the first channel is carried in the downlink channel.
  • the DCI in the above (1) is that after the terminal performs uplink data retransmission according to the uplink channel resource indicated by the "resource transmission information for retransmission of the first uplink data" included in the received first information, if the retransmission If the transmission is unsuccessful, the new DCI that carries the first information including "retransmission resource information of the first uplink data" is subsequently carried.
  • the DCI in the above (2) is that after the terminal performs the data retransmission according to the uplink channel resource indicated by the "resource scheduling information for retransmission of the first uplink data" included in the received first information, if the retransmission If the transmission is unsuccessful, the DCI of the downlink channel scheduling information that carries new first information that includes the "retransmission resource scheduling information of the first uplink data" is subsequently carried.
  • the "second identifier" is released.
  • the first information packet When the first information includes "identification information of the terminal corresponding to the first uplink data successfully received by the base station", the first information packet further includes a third identifier.
  • the third identifier is used to carry the CRC scramble of the DCI for scheduling information of data transmission of the terminal, where the data transmission may be downlink data transmission or uplink data transmission.
  • the third identifier may correspond to an enabled time window, and within the enabled time window, the CRC scrambling information used by the terminal when detecting the DCI is the third identifier.
  • the enable time window times out, the "third identifier" is released.
  • the second identifier and the third identifier are preferably identifiers configured by the base station.
  • the type of the first message may be indicated in multiple forms: the type of the first information includes a first type and a second type, and the first information of the first type includes the first message successfully received by the base station. Identification information of the terminal corresponding to the uplink data. The first information of the second type includes resource scheduling information for retransmission of the first uplink data.
  • Form 1 the type of the first information is indicated by the first instruction information.
  • the first indication information may be preferably 1 bit. For example, when the bit is "0", it indicates that the first information is of the first type; when the bit is "1", it indicates that the first information is of the second type.
  • the first indication information is carried in at least one of the following: downlink control information DCI including first information; DCI including scheduling information of a downlink channel, and the downlink channel is used to carry the first information.
  • the transmission block size TBS corresponding to the first message of the first type and the transmission block size (Transmission Block Size, TBS) is the same.
  • Form two The type of the first information is distinguished by at least one of the following methods.
  • Manner 1 The first type of first message and the second type of first message correspond to different transport block sizes.
  • Method 2 The DCI including the first message of the first type and the DCI including the first message of the second type use different CRC scrambling information.
  • Method 3 The CRC scrambling information used by the DCI where the scheduling information corresponding to the downlink channel carrying the first message of the first type is used Disturb information is different.
  • Form three the type of the first information is indicated by the second instruction information.
  • the second indication information is T (T is an integer greater than or equal to 1) bit information in the first information.
  • the type of the first information is a first type; otherwise, the type of the first information is a second type; or when the T bit information is When the format is predetermined, the type of the first information is the second type; otherwise, the type of the first information is the first type.
  • the base station configures a search space for a downlink control channel carrying the DCI, and the number of search spaces for the downlink control channel is at least one; and the G first resources targeted by the search space for the downlink control channel .
  • Step 304 The terminal receives the first information sent by the base station.
  • the first information is carried in downlink control information (Downlink Control Information) or the first information is carried in a downlink data channel and the scheduling information of the downlink channel is indicated by the DCI.
  • the DCI uses CRC scrambling, and the scrambling information used includes at least one of the following: a first identifier; a resource identifier; and a C-RNTI (Cell Radio Network Temporary Identifier).
  • the terminal may determine whether the first uplink data transmission of the terminal is successful according to the received first information.
  • this DCI may be the DCI carrying the first information or the bearer first (The DCI where the scheduling information of the downlink channel is located).
  • the corresponding first information includes "identification information of the terminal corresponding to the first uplink data successfully received by the base station". If the identification information of the terminal is included in the "identification information of the terminal corresponding to the first uplink data successfully received by the base station", it is considered that the first uplink data transmission of the terminal is successful. In addition, when the terminal detects the DCI scrambled by the C-RNTI, but there is no "identification information of the terminal corresponding to the first uplink data successfully received by the base station" in the DCI, but resource scheduling of the uplink channel or the downlink channel exists. Information, it is also considered that the first uplink data transmission of the terminal is successful.
  • the scrambling information used by the DCI corresponding to the first information including "retransmission resource scheduling information of the first uplink data" may be a first identifier or a resource identifier.
  • the first information includes "identification information of the terminal corresponding to the first uplink data successfully received by the base station"
  • the first information further includes at least one of the following: (1) identification with the terminal Scheduling information for downlink data transmission of information matching terminals; (2) temporary C-RNTI information matching the identification information of the terminal; (3) C-RNTI information matching the identification information of the terminal; (4) ) Configuration information of a downlink control channel search space of the terminal that matches the identification information of the terminal.
  • the terminal may complete subsequent corresponding operations according to the received first information.
  • the first information further includes (1) scheduling of downlink data transmission of a terminal that matches the identification information of the terminal.
  • the terminal receives the downlink data sent by the base station according to the resources indicated by the scheduling information for the downlink data transmission.
  • the terminal detects scrambling by the temporary C-RNTI in the saved downlink control channel search space Corresponding DCI information, and then perform corresponding operations (including transmission of uplink data, transmission of downlink data, etc.) according to the DCI information.
  • the saved downlink control channel search space may be at least one of the following: a downlink control channel search space dedicated to the terminal configured in the RRC-CONNECT state; a shared downlink control channel search space configured by the base station; and a corresponding one of the first resources. Row control channel search space.
  • the first information further includes (2) temporary C-RNTI information matching the identification information of the terminal, (4) configuration information of a downlink control channel search space of the terminal matching the identification information of the terminal
  • the terminal detects the DCI information scrambled by the temporary C-RNTI in the downlink control channel search space indicated in (4), and then completes the corresponding operations (including the transmission of uplink data and the transmission of downlink data) according to the DCI information. Wait).
  • the terminal detects DCI information scrambled by the C-RNTI in the saved downlink control channel search space, Then complete the corresponding operation (including transmission of uplink data, transmission of downlink data, etc.) according to the DCI information.
  • the saved downlink control channel search space may be at least one of the following: a downlink control channel search space dedicated to the terminal configured in the RRC-CONNECT state; a shared downlink control channel search space configured by the base station; and a corresponding one of the first resources. Row control channel search space.
  • the terminal detects DCI information scrambled by C-RNTI in the downlink control channel search space indicated in (4), and then completes corresponding operations (including transmission of uplink data, transmission of downlink data, etc.) according to the DCI information.
  • the “retransmission resource scheduling information of the first uplink data” in the first information is targeted for Is the first retransmission of uplink data sent in G first resources; when the first uplink data is "retransmission data of uplink data sent by the terminal in G first resources", the first The “resource transmission information for retransmission of the first uplink data” in the information is directed to the next retransmission of the uplink data sent in the G first resources.
  • the terminal Before sending the first uplink data, the terminal also receives at least one set of configuration information of the first resource sent by the base station.
  • the set of configuration information of the first resources is used to configure one or more of the G first resources.
  • each set of configuration information of the first resource corresponds to a first level
  • the first level includes one of the following: a coverage enhancement level, a repeat transmission level of a random access channel, a repeat transmission number of the random access channel, The number of repeated transmissions corresponding to the uplink data transmission, the maximum number of bits in the transport block, and the resource location for transmitting the uplink data.
  • One or more sets of the G (G is an integer greater than or equal to 1) first resources may be configured in a set of configuration information of the first resources corresponding to a first level.
  • multiple sets of configuration information of the first resources may correspond to the same first level.
  • the first level corresponding to the first resource selected by the terminal may be the same as the first level of the terminal.
  • the coverage enhancement level corresponding to the first resource is the same as the coverage enhancement level of the terminal.
  • Step 305 The terminal performs subsequent operations according to the received first message and different determination conditions.
  • the terminal when the first condition is satisfied, the terminal performs uplink data transmission in the subsequent first available G first resources; or the terminal sends a random access signal on subsequent available random access channel resources; Or triggering the terminal to initiate random access; the subsequent preference is next.
  • the first condition includes at least one of the following: (1) The identification information of the terminal of the terminal does not include "identification information of the terminal corresponding to the first uplink data successfully received by the base station" in the first information. (2) The DCI search space detection timeout of the DCI containing the first information timeout; (3) The DCI search space detection timeout of the DCI bearer is detected, wherein the DCI includes a Scheduling information of the downlink channel; (4) the terminal does not detect the identification information of the terminal within the configured time period.
  • the first information includes only identification information of a terminal corresponding to the first uplink data that the base station successfully receives, and does not include retransmission of the first uplink data. Resource scheduling information.
  • the first condition is preferably combined: (1) + (2) or (1) + (3).
  • the downlink control channel search space detection timeout means that the downlink control channel search space corresponds to a detection time window in the time domain. When the detection time exceeds the end time of the detection window, the detection timeout is considered.
  • the terminal performs uplink data transmission in subsequent G first resources that are available, and the uplink data sent is preferably: (1) uplink data sent by the terminal in the last G first resources Retransmission data; or, (2) new uplink data.
  • the uplink data sent may carry indication information to indicate which of the above (1) and (2) data the uplink data is specifically.
  • the method further includes performing one of the following operations: (1): triggering a random access process to allow the terminal to enter an RRC-CONNECT state, In addition, the terminal sends the uplink data that failed to be transmitted to the base station; (2) triggers a random access procedure to allow the UE to send the uplink data that has failed in transmission to the base station in Msg3.
  • the UE may implicitly instruct the UE to choose which one of the above two operations (1) and (2) through the selected random access signal.
  • the resource scheduling information for retransmission of the first uplink data is not included in the first information.
  • the terminal when the second condition is satisfied, performs retransmission of the first uplink data in G subsequent available first resources; or the first uplink data transmission does not support retransmission.
  • the subsequent is preferably the next.
  • the second condition includes at least one of the following: (1) the identification information of the terminal is not included in the "identification information of the terminal corresponding to the first uplink data successfully received by the base station" of the first information; (2) No time domain-frequency domain resource is configured in the "retransmission resource scheduling information of the first uplink data” or no effective configuration is configured in the "retransmission resource scheduling information of the first uplink data" For time-frequency domain resources; preferably, the "retransmission resource scheduling information of the first uplink data" included in the first information is set as configurable information. After the UE decodes the first information, it knows whether the resource scheduling information of the retransmission of the first uplink data is configured by using some displayed or hidden indications in the first information.
  • the first information includes "the first uplink Resource scheduling information for data retransmission ", but after decoding, it is known through the value of this information that the retransmitted resource for uplink data transmission indicated by this information is invalid or unavailable.
  • (3) contains the first information The downlink control channel search space detection timeout corresponding to the DCI timeout; (4) The downlink control channel search space detection timeout carrying the DCI timeout, wherein the DCI includes scheduling information of the downlink channel carrying the first information; (5) the The terminal does not detect the identification information of the terminal within the configured time period.
  • a preferred combination of the second conditions is: (1) + (2) + (3) or (1) + (2) + (4).
  • the terminal when the third condition is satisfied, performs at least one of the following operations: (1) reselecting the first resource indicated by the configuration information of the first resource for uplink data transmission; (2) ) Among the configuration information of at least one set of the first resources corresponding to the current first level, reselect a set of the first resources indicated by the configuration information of the first resources for uplink data transmission; (3) in the next Among at least one set of configuration information of the first resource corresponding to the first level, a set of the first resource indicated by the configuration information of the first resource is selected for uplink data transmission.
  • the third condition includes: on the first resource corresponding to the current first level, when the terminal sends the first uplink data M times (M is an integer greater than or equal to 1),
  • M is an integer greater than or equal to 1.
  • the statistical method of M is directed to transmission and retransmission of the same uplink data.
  • the value of M is configured by the base station and sent to the terminal or the standard default configuration.
  • the next first level is that when the first uplink data is transmitted M times (M is an integer greater than or equal to 1), the corresponding first level is i (i is An integer greater than or equal to 0), the next first level is i + 1.
  • the terminal when the fourth condition is satisfied, performs at least one of the following operations: the terminal considers that the first uplink data transmission fails; at least one set of the first resource corresponding to the next first level In the configuration information, a set of the first resource indicated by the configuration information of the first resource is selected for uplink data transmission; the terminal sends a random access signal on a random access channel resource or triggers the terminal to initiate a random access Into.
  • the fourth condition includes at least one of the following: (1) On the first resource corresponding to the current first level, when the terminal performs the first uplink at the Mth (M is an integer greater than or equal to 1) times After the data is sent, the corresponding first information "identification information of the terminal corresponding to the first uplink data successfully received by the base station" does not include the identification information of the terminal; (2) the current sending place of the first uplink data
  • the first level corresponding to the occupied first resource is L, where L is the index of the largest first level or the first level index configured by the base station; (3)
  • the total number of times the terminal sends the first uplink data is J (J is an integer greater than or equal to 1) times; (4) at the current first level, the downlink control channel search space detection of the DCI carrying the first information timeout; (5) at the current first level, the downlink carrying the DCI The control channel search space detection times out, wherein the DCI includes scheduling information of a downlink channel carrying the first information.
  • the preferred combination of the fourth condition is: (1) + (2), (2) + (3); or, (1) + (2) + (4), (2) + (3) + (4) ; Or, (1) + (2) + (5), (2) + (3) + (5).
  • the terminal considers that the first uplink data transmission is successful.
  • the fifth condition includes at least one of the following: (1) the terminal does not detect resource retransmission information of the first uplink data within a configured duration; (2) the first uplink data In the downlink control channel search space corresponding to the data transmission, no resource scheduling information of the retransmission of the first uplink data is detected.
  • FIG. 4 is a schematic flowchart of a data transmission method according to a fourth embodiment of the present invention. As shown in Figure 4, the method includes:
  • Step 401 The base station sends uplink channel configuration information to the terminal, where the uplink channel configuration information includes at least one of the following: resource configuration information occupied by an uplink channel; and configuration information of a search space for a downlink control channel.
  • the uplink channel is used for data transmission of a terminal or terminal group in an RRC-CONNECT state or data transmission in a non-RRC-CONNECT state.
  • the information carried on the downlink control channel includes downlink control information (Downlink Control Information).
  • the downlink control channel search space includes one or more downlink control channel transmission opportunities.
  • the uplink channel configuration information may be carried in one signaling or sent through multiple signalings. For example, when the uplink channel configuration information is sent through multiple signaling, the resource configuration information occupied by the uplink channel may be sent through signaling 1, and the configuration information of the downlink control channel search space may be sent through signaling 2.
  • the method further includes: the base station configuring at least one set of the uplink channel configuration information.
  • the set of the uplink channel configuration information may configure one or more D first resources, where D is an integer greater than or equal to 1.
  • the configuration of the G first resources mentioned below is the configuration of the G first resources in Embodiments 1 to 3 described above.
  • Each set of the uplink channel configuration information corresponds to a first level.
  • the first level includes one of the following: a coverage enhancement level; a repeat transmission level of a random access channel; a repeat transmission number of the random access channel; a corresponding repeat transmission number corresponding to an uplink data transmission; a maximum number of transmission block bits; Describe the resource location of uplink data.
  • the resource configuration information occupied by the uplink channel indicates at least one first resource
  • the first resource may adopt time division multiplexing (TDM) and / or frequency division multiplexing (FDM) and / or code division multiplexing. (CDM) multiplexing. That is, one or more first resources (that is, uplink channel resources for uplink data transmission) can be configured at one time; when multiple are configured, it is preferable to use TDM and / or FDM for multiple uplink channel resources; further preferred Ground, multiple uplink channel resources multiplexed by TDM are discrete in the time domain.
  • FIG. 5 is a schematic diagram of multiple uplink channel resources using FDM and TDM multiplexing. As shown in FIG.
  • each uplink channel resource is divided into 2 sub-blocks through FDM.
  • uplink channel resource 1 is divided into sub-blocks 1-1 and 1-2 through FDM multiplexing
  • uplink channel resource 2 is divided into sub-block 2 through FDM multiplexing. -1 and sub-block 2-2, and so on.
  • the uplink channel resource n is divided into sub-block n-1 and sub-block n-2 through FDM multiplexing.
  • FIG. 6 is another schematic diagram of using multiple FDM and TDM multiplexing modes for multiple uplink channel resources. As shown in FIG.
  • each uplink channel resource is divided into 4 sub-blocks through FDM and FDM.
  • the uplink channel resource 1 is divided into sub-block 1-1, sub-block 1-2, sub-block 1-3, and sub-block 1-4.
  • the uplink channel Resource 2 is divided into sub-block 2-1, sub-block 2-2, sub-block 2-3, and sub-block 2-4, and so on.
  • the uplink channel resource n is divided into sub-block n-1, sub-block n-2, and sub-block. Block n-3 and sub-block n-4.
  • the D first resources correspond to F resource identification information, and D and F are integers greater than or equal to 1).
  • the resource identification information is calculated based on at least one of the following: a time domain location of the first resource; a frequency domain location of the first resource; and a coder or a set of coders corresponding to the first resource.
  • the function of the F resource identifiers is to identify the D first resources, because the resource configuration information occupied by the uplink channel indicates at least 1 first resource, and each of the F resource identifiers is The D corresponding first resources can be identified.
  • the value of F is preferably 1 or 2.
  • the calculation method of the resource identification information includes the following two methods.
  • Sub-block 1-1 and sub-block 1-2 of the uplink channel resource 1 correspond to the same resource identification information, for example, ID1, and ID1 is calculated based on at least the time domain positions of sub-block 1-1 and sub-block 1-2.
  • Sub-block 2-1 and sub-block 2-2 of the uplink channel resource 2 correspond to the same resource identification information, for example, ID2, and ID2 is calculated based on at least the time domain positions of sub-block 2-1 and sub-block 2-2. And so on.
  • Sub-block 1-1 of uplink channel resource 1 corresponds to a piece of resource identification information, such as ID1-1, and ID 1-1 is calculated based on at least the time and frequency domain positions of sub-block 1-1;
  • uplink channel resource 1 Sub-block 1-2 corresponds to a piece of resource identification information, for example ID1-2, and ID1-2 is calculated based on at least the time and frequency domain positions of sub-block 1-2;
  • sub-block 2-1 of uplink channel resource 2 corresponds One piece of resource identification information is, for example, ID2-1, and ID2-1 is calculated based on at least the time domain position and the frequency domain position of subblock 2-1.
  • Subblock 2-2 of uplink channel resource 2 corresponds to one piece of resource identification information, such as ID2-2 and ID2-2 are calculated based on at least the time domain position and the frequency domain position of the sub-block 2-2; and so on.
  • the first resource is used for uplink data transmission of at least one terminal.
  • the terminal may be a terminal or a group of terminals.
  • the terminal is a group of terminals, that is, a group of terminals can share the uplink channel for uplink data transmission.
  • the uplink data transmission refers to uplink data transmission in a non-RRC-CONNECT state, and the non-RRC-CONNECT state includes at least an RRC-IDLE state.
  • the first levels corresponding to the at least one terminal are the same.
  • each set of the uplink channel configuration information corresponds to a first level, that is, at least one first resource indicated by the uplink channel configuration information corresponds to a first level.
  • a terminal or a group of terminals also corresponds to a first level.
  • the configuration information of the downlink control channel search space indicates at least one downlink control channel search space, and meets at least one of the following: one downlink control channel search space corresponds to D1 (D1 is an integer greater than or equal to 1). First resource; one downlink control channel search space corresponds to F1 (F1 is an integer greater than or equal to 1) resource identifiers.
  • the number of the first resources corresponding to different downlink control channel search spaces may be different or the same.
  • the number of the resource identifiers corresponding to different downlink control channel search spaces may be different or the same.
  • FIG. 7 is a schematic diagram of a downlink control channel search space in an FDD system.
  • the sub-block 1-1 of the uplink channel resource 1 corresponds to a piece of resource identification information, such as ID1-1, and the downlink corresponding to the sub-block 1-1.
  • the control channel search space is search space 1-1; sub-block 1-2 of uplink channel resource 1 corresponds to a resource identification information, such as ID1-2, and the downlink control channel search space corresponding to sub-block 1-2 is search space 1- 2; sub-block 2-1 of uplink channel resource 2 corresponds to a piece of resource identification information, such as ID2-1, and the downlink control channel search space corresponding to sub-block 2-1 is search space 2-1; sub-block of uplink channel resource 2 2-2 corresponds to a piece of resource identification information, such as ID2-2, and the downlink control channel search space corresponding to sub-block 2-2 is search space 2-2; and so on.
  • FIG. 8 is a schematic diagram of a downlink control channel search space in a TDD system. As shown in FIG.
  • sub-block 1-1 and sub-block 1-2 of uplink channel resource 1 correspond to one piece of resource identification information, such as ID1, and downlink control corresponding to ID1
  • the channel search space is search space 1;
  • sub-block 2-1 and sub-block 2-2 of uplink channel resource 2 correspond to one piece of resource identification information, such as ID2, and the downlink control channel search space corresponding to ID2 is search space 2; and so on.
  • the DCI carried in the downlink control channel search space uses CRC and Scrambling, wherein the CRC scrambling information is a resource identifier corresponding to the plurality of first resources.
  • the resource identifiers corresponding to the plurality of first resources are determined according to at least one of: a time domain location of the plurality of first resources; a frequency domain location of the plurality of first resources; the plurality of first resources corresponding The index of the set of coders.
  • FIG. 9 is another schematic diagram of a downlink control channel search space in an FDD system. As shown in FIG.
  • uplink channel resource 1 corresponds to 2 resource identification information, such as ID1-A and ID1-B, and downlink control corresponding to ID1-A.
  • the channel search space is search space 1-A
  • the downlink control channel search space corresponding to ID1-B is search space 1-B
  • the uplink channel resource 2 corresponds to 2 resource identification information, such as ID2-A and ID2-B, ID2-
  • the downlink control channel search space corresponding to A is search space 2-A
  • the downlink control channel search space corresponding to ID2-B is search space 2-B
  • FIG. 10 is another schematic diagram of a downlink control channel search space in an FDD system. As shown in FIG.
  • uplink channel resource 1 corresponds to 2 resource identification information, such as ID1-A and ID1-B and ID1-A and ID1-B.
  • the corresponding downlink control channel search space is search space 1.
  • the uplink channel resource 2 corresponds to two pieces of resource identification information, for example, ID2-A and ID2-B, and the downlink control channel search space corresponding to ID2-A and ID2-B is search space 2; and so on.
  • the terminal After receiving the uplink channel configuration information sent by the base station, the terminal sends the first uplink data to the base station according to the uplink channel configuration information. For details, refer to Embodiment 3, and details are not described again.
  • the base station After receiving the first uplink data sent by the terminal, the base station performs the following step 402.
  • the base station sends first information to the terminal, where the first information includes at least one of the following: among the G first resources corresponding to the downlink control channel, the uplink data transmission received by the base station corresponds to A set of terminal identifiers, G is an integer greater than or equal to 1; and retransmission resource scheduling information of the uplink data transmission.
  • the first information may be carried in a DCI or a downlink channel, and scheduling information of the downlink channel is indicated by the DCI.
  • the DCI may be downlink control information (DCI) carried on the downlink control channel, or may be other DCI messages.
  • DCI downlink control information
  • the terminal identifier set may also be referred to as terminal identification information, and the terminal identifier may be an identifier such as a C-RNTI assigned to the terminal during the RRC connection establishment process or an s-TMSI of the terminal.
  • the retransmission resource scheduling information of the uplink data transmission is used to indicate configuration information of retransmission resources for retransmission by a terminal that has not been successfully transmitted in the first resource corresponding to the downlink control channel. Since the base station does not know which terminals have not been successfully transmitted, the retransmission scheduling information is not directed to the determined terminals, but to terminals that have not successfully transmitted. If the terminal does not detect the terminal identity sent by it in the uplink data transmission in the DCI, it is considered that the transmission is not successful, and therefore the retransmission operation may be performed according to the resource indicated by the retransmission scheduling information.
  • the G first resources include at least one of the following: D1 (D1 is an integer greater than or equal to 1) of the first resources corresponding to a downlink control channel search space; and F1 ( F1 is an integer greater than or equal to 1) the first resource corresponding to the resource identifier.
  • the terminal identifier set corresponding to the uplink data transmission successfully received by the base station and “the resource scheduling information for the retransmission of the uplink data transmission” may be carried in The same first information may be carried in different first information.
  • the terminal identifier set corresponding to the uplink data transmission successfully received by the base station and “the resource scheduling information for the retransmission of the uplink data transmission” are carried in different
  • the DCI carrying "the set of terminal identifiers corresponding to the uplink data transmission successfully received by the base station among the G first resources corresponding to the downlink control channel” and the "retransmission of the uplink data transmission” The CRC scrambling sequence used by the DCI of the "Resource Scheduling Information" is different.
  • the first information further includes configuration information of a downlink control channel search space corresponding to the retransmission of the uplink data transmission.
  • the CRC scrambling information of the DCI message sent in the downlink control channel search space includes one of the following: CRC scrambling information of the DCI message in the downlink control channel search space corresponding to the first transmission of the uplink data transmission; CRC scrambling information configured by the first information.
  • the configuration information of the downlink control channel search space corresponding to the retransmission of the uplink data transmission includes at least one of the following: a time-frequency domain resource size occupied by the downlink control channel search space; and the downlink control channel search space Occupied time-frequency domain resource location.
  • the time-frequency domain resource location occupied by the downlink control channel search space indicates: the start time of the time-frequency domain resource occupied by the search space and the end time of the retransmitted resource of the uplink data transmission Time domain interval.
  • the terminal identifier is carried by uplink data sent by the terminal in the first resource.
  • the first information includes "in the D1 first resources corresponding to the downlink control channel, the terminal identifier set corresponding to the uplink data transmission successfully received by the base station", the first information includes It also includes at least one of the following: scheduling information for downlink data transmission of a terminal matching the terminal identification; C-RNTI information of the terminal matching the terminal identification; and configuration information of a downlink control channel search space of the terminal matching the terminal identification.
  • the role of the C-RNTI information of the terminal that matches the terminal identifier and the configuration information of the downlink control channel search space of the terminal that matches the terminal identifier is to: through these two information, the terminal can obtain a dedicated downlink control channel Search space, where the DCI information carried is scrambled by C-RNTI.
  • the DCI may carry scheduling information related to an uplink channel and a downlink channel of a terminal.
  • FIG. 11 is a schematic flowchart of a data transmission method according to Embodiment 5 of the present invention. As shown in FIG. 11, the method includes:
  • Step 1101 A terminal transmits uplink data through an uplink channel, and the uplink channel is configured by a base station through uplink channel configuration information.
  • the uplink channel configuration information includes at least one of the following: resource information occupied by the uplink channel; Configuration information.
  • the information carried on the downlink control channel includes downlink control information (Downlink Control Information).
  • the downlink control channel search space includes one or more downlink control channel transmission opportunities.
  • the uplink channel is used for data transmission of a terminal or terminal group in an RRC-CONNECT state or data transmission in a non-RRC-CONNECT state.
  • the uplink channel is configured by a base station through uplink channel configuration information, and includes: the base station configures at least one set of the uplink channel configuration information, and each set of the uplink channel configuration information corresponds to a first level.
  • the first level includes one of the following: a coverage enhancement level; a repeat transmission level of a random access channel; a number of repeated transmissions of the random access channel; a corresponding number of repeated transmissions during uplink data transmission; A resource location for transmitting the uplink data.
  • the method further includes: the terminal receiving the uplink channel configuration information sent by the base station.
  • the uplink channel configuration information may be carried in one signaling, or sent through multiple signalings.
  • the uplink channel configuration information is sent through multiple signaling, for example, the resource configuration information occupied by the uplink channel is sent through signaling 1, and the configuration information of the downlink control channel search space is sent through signaling 2.
  • the terminal may select a set of uplink channel configuration information from the received uplink channel configuration information, and the selection is based on the first level corresponding to the uplink channel configuration information that can be selected for the terminal and the first level of the terminal.
  • the rank is the same.
  • the uplink channel is used for uplink data transmission of at least one terminal.
  • the first levels corresponding to the at least one terminal are the same.
  • the terminal may be a terminal or a group of terminals.
  • the terminal is a group of terminals, that is, a group of terminals can share the uplink channel for uplink data transmission.
  • the first levels corresponding to the groups of terminals are the same.
  • the uplink data transmission may refer to uplink data transmission in a non-RRC-CONNECT state.
  • the non-RRC-CONNECT state includes at least the RRC-IDLE state.
  • the resource configuration information occupied by the uplink channel indicates at least one first resource
  • the first resource may adopt time division multiplexing (TDM) and / or frequency division multiplexing (FDM) and / or code division multiplexing. (CDM) multiplexing. That is, one or more first resources (that is, uplink channel resources for uplink data transmission) can be configured at one time; when multiple are configured, it is preferable to use TDM and / or FDM for multiple uplink channel resources; further preferred Ground, multiple uplink channel resources multiplexed by TDM are discrete in the time domain.
  • FIG. 5 is a schematic diagram of multiple uplink channel resources using FDM and TDM multiplexing. As shown in FIG.
  • each uplink channel resource is divided into 2 sub-blocks through FDM.
  • uplink channel resource 1 is divided into sub-blocks 1-1 and 1-2 through FDM multiplexing
  • uplink channel resource 2 is divided into sub-block 2 through FDM multiplexing. -1 and sub-block 2-2, and so on.
  • the uplink channel resource n is divided into sub-block n-1 and sub-block n-2 through FDM multiplexing.
  • FIG. 6 is a schematic diagram of multiple uplink channel resources using FDM and TDM multiplexing. As shown in FIG.
  • the uplink channel resource configuration period is T ms.
  • Each uplink channel resource is divided into 4 sub-blocks through FDM and FDM.
  • the uplink channel resource 1 is divided into sub-block 1-1, sub-block 1-2, sub-block 1-3, and sub-block 1-4.
  • the uplink channel Resource 2 is divided into sub-block 2-1, sub-block 2-2, sub-block 2-3, and sub-block 2-4, and so on.
  • the uplink channel resource n is divided into sub-block n-1, sub-block n-2, and sub-block. Block n-3 and sub-block n-4.
  • the D first resources correspond to F resource identification information, and D and F are integers greater than or equal to 1).
  • the resource identification information is calculated based on at least one of the following: a time domain location of the first resource; a frequency domain location of the first resource; and a coder or a set of coders corresponding to the first resource.
  • the function of the F resource identifiers is to identify the D first resources, because the resource configuration information occupied by the uplink channel indicates at least 1 first resource, and each of the F resource identifiers is The D corresponding first resources can be identified.
  • the value of F is preferably 1 or 2.
  • the method for calculating the resource identification information includes the following two methods: Method 1: Sub-block 1-1 and sub-block 1-2 of the uplink channel resource 1 correspond to the same resource identification information, For example, it is ID1, and ID1 is calculated based on at least the time domain positions of subblocks 1-1 and 1-2. Sub-block 2-1 and sub-block 2-2 of the uplink channel resource 2 correspond to the same resource identification information, for example, ID2, and ID2 is calculated based on at least the time domain positions of sub-block 2-1 and sub-block 2-2. And so on.
  • Sub-block 1-1 of uplink channel resource 1 corresponds to a piece of resource identification information, such as ID1-1, and ID 1-1 is calculated based on at least the time and frequency domain positions of sub-block 1-1;
  • uplink channel resource 1 Sub-block 1-2 corresponds to a piece of resource identification information, for example ID1-2, and ID1-2 is calculated based on at least the time and frequency domain positions of sub-block 1-2;
  • sub-block 2-1 of uplink channel resource 2 corresponds A piece of resource identification information is, for example, ID2-1, and ID2-1 is calculated based on at least the time domain position and the frequency domain position of sub-block 2-1.
  • Sub-block 2-2 of uplink channel resource 2 corresponds to a piece of resource identification information, such as ID2-2 and ID2-2 are calculated based on at least the time domain position and the frequency domain position of the sub-block 2-2; and so on.
  • the first resource is used for uplink data transmission of at least one terminal.
  • the terminal may be a terminal or a group of terminals.
  • the terminal is a group of terminals, that is, a group of terminals can share the uplink channel for uplink data transmission.
  • the uplink data transmission refers to uplink data transmission in a non-RRC-CONNECT state, and the non-RRC-CONNECT state includes at least an RRC-IDLE state.
  • the first levels corresponding to the at least one terminal are the same.
  • each set of the uplink channel configuration information corresponds to a first level, that is, at least one first resource indicated by the uplink channel configuration information corresponds to a first level.
  • a terminal or a group of terminals also corresponds to a first level.
  • the configuration information of the downlink control channel search space indicates at least one downlink control channel search space, and meets at least one of the following: one downlink control channel search space corresponds to D1 (D1 is an integer greater than or equal to 1). First resource; one downlink control channel search space corresponds to F1 (F1 is an integer greater than or equal to 1) resource identifiers.
  • the number of the first resources corresponding to different downlink control channel search spaces may be different or the same.
  • the number of the resource identifiers corresponding to different downlink control channel search spaces may be different or the same.
  • FIG. 7 is a schematic diagram of a downlink control channel search space in an FDD system.
  • the sub-block 1-1 of the uplink channel resource 1 corresponds to a piece of resource identification information, such as ID1-1, and the downlink corresponding to the sub-block 1-1.
  • the control channel search space is search space 1-1; sub-block 1-2 of uplink channel resource 1 corresponds to a resource identification information, such as ID1-2, and the downlink control channel search space corresponding to sub-block 1-2 is search space 1- 2; sub-block 2-1 of uplink channel resource 2 corresponds to a piece of resource identification information, such as ID2-1, and the downlink control channel search space corresponding to sub-block 2-1 is search space 2-1; sub-block of uplink channel resource 2 2-2 corresponds to a piece of resource identification information, such as ID2-2, and the downlink control channel search space corresponding to sub-block 2-2 is search space 2-2; and so on.
  • FIG. 8 is another schematic diagram of a downlink control channel search space in a TDD system.
  • sub-block 1-1 and sub-block 1-2 of uplink channel resource 1 correspond to one piece of resource identification information, such as ID1 and ID1.
  • the downlink control channel search space is search space 1.
  • Sub-block 2-1 and sub-block 2-2 of uplink channel resource 2 correspond to one piece of resource identification information, such as ID2, and the downlink control channel search space corresponding to ID2 is search space 2. analogy.
  • the DCI carried in the downlink control channel search space uses CRC and Scrambling, wherein the CRC scrambling information is a resource identifier corresponding to the plurality of first resources.
  • the resource identifiers corresponding to the plurality of first resources are determined according to at least one of: a time domain location of the plurality of first resources; a frequency domain location of the plurality of first resources; the plurality of first resources corresponding The index of the set of coders.
  • FIG. 9 is another schematic diagram of a downlink control channel search space in an FDD system. As shown in FIG.
  • uplink channel resource 1 corresponds to 2 resource identification information, such as ID1-A and ID1-B, and downlink control corresponding to ID1-A.
  • the channel search space is search space 1-A
  • the downlink control channel search space corresponding to ID1-B is search space 1-B
  • the uplink channel resource 2 corresponds to 2 resource identification information, such as ID2-A and ID2-B, ID2-
  • the downlink control channel search space corresponding to A is search space 2-A
  • the downlink control channel search space corresponding to ID2-B is search space 2-B
  • FIG. 10 is another schematic diagram of a downlink control channel search space in an FDD system. As shown in FIG.
  • uplink channel resource 1 corresponds to 2 resource identification information, such as ID1-A and ID1-B and ID1-A and ID1-B.
  • the corresponding downlink control channel search space is search space 1.
  • the uplink channel resource 2 corresponds to two pieces of resource identification information, for example, ID2-A and ID2-B, and the downlink control channel search space corresponding to ID2-A and ID2-B is search space 2; and so on.
  • Step 1102 the terminal receives a first message sent by a base station, where the first message includes at least one of the following: among the G first resources corresponding to the downlink control channel, the uplink data transmission corresponding to the base station successfully received A terminal identifier set, G is an integer greater than or equal to 1; and resource scheduling information for retransmission of the uplink data transmission.
  • the first information may be carried in a DCI or a downlink channel, and scheduling information of the downlink channel is indicated by the DCI.
  • the DCI may be downlink control information (DCI) carried on the downlink control channel, or may be other DCI messages.
  • DCI downlink control information
  • the terminal identifier set may also be referred to as terminal identification information, and the terminal identifier may be an identifier such as a C-RNTI assigned to the terminal during the RRC connection establishment process or an s-TMSI of the terminal.
  • the retransmission resource scheduling information of the uplink data transmission is used to indicate configuration information of retransmission resources for retransmission by a terminal that has not been successfully transmitted in the first resource corresponding to the downlink control channel. Since the base station does not know which terminals have not been successfully transmitted, the retransmission scheduling information is not directed to the determined terminals, but to terminals that have not successfully transmitted. If the terminal does not detect the terminal identity sent by it in the uplink data transmission in the DCI, it is considered that the transmission is not successful, and therefore the retransmission operation may be performed according to the resource indicated by the retransmission scheduling information.
  • the G first resources include at least one of the following: D1 (D1 is an integer greater than or equal to 1) of the first resources corresponding to a downlink control channel search space; and F1 ( F1 is an integer greater than or equal to 1) the first resource corresponding to the resource identifier.
  • the terminal identifier set corresponding to the uplink data transmission successfully received by the base station and “the resource scheduling information for the retransmission of the uplink data transmission” may be carried in The same first information may be carried in different first information.
  • the terminal identifier set corresponding to the uplink data transmission successfully received by the base station and “the resource scheduling information for the retransmission of the uplink data transmission” are carried in different
  • the DCI carrying "the set of terminal identifiers corresponding to the uplink data transmission successfully received by the base station among the G first resources corresponding to the downlink control channel” and the "retransmission of the uplink data transmission” The CRC scrambling sequence used by the DCI of the "Resource Scheduling Information" is different.
  • the first information further includes configuration information of a downlink control channel search space corresponding to the retransmission of the uplink data transmission.
  • the CRC scrambling information of the DCI message sent in the downlink control channel search space includes one of the following: CRC scrambling information of the DCI message in the downlink control channel search space corresponding to the first transmission of the uplink data transmission; CRC scrambling information configured by the first information.
  • the configuration information of the downlink control channel search space corresponding to the retransmission of the uplink data transmission includes at least one of the following: a time-frequency domain resource size occupied by the downlink control channel search space; and the downlink control channel search space Occupied time-frequency domain resource location.
  • the time-frequency domain resource location occupied by the downlink control channel search space indicates: the start time of the time-frequency domain resource occupied by the search space and the end time of the retransmitted resource of the uplink data transmission Time domain interval.
  • the terminal identifier is carried by uplink data sent by the terminal in the first resource.
  • the first information includes "in the D1 first resources corresponding to the downlink control channel, the terminal identifier set corresponding to the uplink data transmission successfully received by the base station", the first information includes It also includes at least one of the following: scheduling information for downlink data transmission of a terminal matching the terminal identification; C-RNTI information of the terminal matching the terminal identification; and configuration information of a downlink control channel search space of the terminal matching the terminal identification.
  • the role of the C-RNTI information of the terminal that matches the terminal identifier and the configuration information of the downlink control channel search space of the terminal that matches the terminal identifier is to: through these two information, the terminal can obtain a dedicated downlink control channel Search space, where the DCI information carried is scrambled by C-RNTI.
  • the DCI may carry scheduling information related to an uplink channel and a downlink channel of a terminal.
  • the terminal performs subsequent related operations according to the received first information and different conditions, specifically including: Step 1103, when the terminal identifier of the terminal is not included in "G corresponding to the downlink control channel (G is greater than or equal to When the base station successfully receives the uplink data transmission corresponding to the terminal identification set among the first resources), the terminal continues to perform uplink data transmission on the next available first resource; or Random access signals are sent on subsequent available random access channel resources.
  • the terminal continues to perform uplink data transmission on the next available first resource, and the uplink data sent is preferably: (1) uplink data that was not successfully transmitted on the first available first resource; or, ( 2) New uplink data.
  • the uplink data that is continuously transmitted on the next available first resource carries indication information to indicate which of the two types of uplink data (1) and (2) above is specific.
  • Operation 1 Trigger a random access process, let the terminal enter the RRC-CONNECT state, and the terminal will The uplink data that has failed to be transmitted before is sent to the base station;
  • Operation 2 Trigger a random access process, and let the UE send the uplink data that has failed to be transmitted to the base station in Msg3.
  • the UE may implicitly indicate which one of the above two operations the UE selects through the selected random access signal.
  • the "subsequent available random access channel resource" is an available random access channel resource after the time domain resource in which the DCI is located, preferably the first available random access channel resource; or,
  • the "subsequent available random access channel resources” are available random access channel resources after the time domain resources corresponding to the search space where the DCI is located, and preferably the first available random access channel resources.
  • the terminal identifier of the terminal when the terminal identifier of the terminal is not included in "the G (G is an integer greater than or equal to 1) first resources corresponding to the downlink control channel, the terminal identifier corresponding to the uplink data transmission successfully received by the base station In the “set”, preferably, the first information does not include “retransmission resource scheduling information of the uplink data transmission”.
  • the terminal identifier When the terminal identifier is not included in the "G (G is an integer greater than or equal to 1) first resources corresponding to the downlink control channel, the terminal identifier corresponding to the uplink data transmission successfully received by the base station Set ", and no time domain-frequency domain resources of retransmission resources are configured in the" retransmission resource scheduling information for uplink data transmission "or no configuration in the” retransmission resource scheduling information for uplink data transmission "
  • the time-frequency domain resource of the effective retransmission resource is: then the retransmission resource of the uplink data transmission is the next available first resource, where the next one is seen from time The next available first resource; or the retransmission resource for the uplink data transmission is the first resource available after the time domain resource where the DCI is located, wherein the available first resource is preferably Is the first available first resource; or the retransmission resource for uplink data transmission is the first resource available after the time domain resource corresponding to the search space where the DCI is located, where the The first resource with the
  • the "retransmission resource scheduling information for uplink data transmission" contained in the first message carried in the DCI may be set as configurable information. After the UE decodes the DCI, it is displayed or hidden through some of the DCI. Knowing that this information is not configured, it may be considered that no time domain-frequency domain resources of retransmission resources are configured; or, the first message carried in the DCI includes the "retransmission of the uplink data transmission Transmitted resource scheduling information ", but after decoding the DCI, knowing that the retransmitted resources of the uplink data transmission indicated by this information are invalid or unavailable through the value of this information, it can be considered that no effective retransmission resources are configured Time-frequency domain resources.
  • step 1104 after the terminal retransmits the uplink data transmission M times (M is an integer greater than or equal to 1), and in the corresponding first information, "the G number corresponding to the downlink control channel, In a resource, the terminal identifier set corresponding to the uplink data transmission successfully received by the base station does not include the terminal identifier, and the terminal performs the following operation: selecting the uplink channel corresponding to the next first level
  • the uplink channel configured in the configuration information is used for uplink data transmission.
  • the value of M can be configured by the base station and sent to the terminal or the standard default configuration.
  • the "next said first level" that is, when the Mth retransmission of the uplink data transmission is performed, the corresponding first level is i (i is an integer greater than or equal to 0), then the next The first level is i + 1.
  • the retransmission resource for the Mth uplink data transmission is indicated in the first information by "resource scheduling information for retransmission of the uplink data transmission”.
  • step 1105 after the terminal retransmits the uplink data transmission for the Qth time (Q is an integer greater than or equal to 1), and in the corresponding first information, "the Gth number corresponding to the downlink control channel, In a resource, the terminal identifier set corresponding to the uplink data transmission successfully received by the base station does not include the terminal identifier, and when the first level corresponding to the uplink channel configuration information is L, the terminal subsequently A random access signal is transmitted on the random access channel resources; where L is the index of the maximum first level corresponding to the uplink channel configuration information configured by the base station or the first level index configured by the base station; where the value of Q is determined by the base station Configure and send to the terminal or standard default configuration.
  • the “subsequent available random access channel resources” are available random access channel resources after the time domain resource in which the DCI is located, and the available random access channel resources are preferably The first available random access channel resource.
  • the "subsequent available random access channel resources" are among the available random access channel resources after the time domain resources corresponding to the search space where the DCI is located, and the available random access channel resources are preferably The first available random access channel resource.
  • the terminal identifier set corresponding to the uplink data transmission successfully received by the base station does not include the terminal identifier, and when the first level corresponding to the current uplink channel configuration information is L, the uplink data transmission may be considered to have failed.
  • the Qth retransmission resource for performing the uplink data transmission may be indicated by the "retransmission resource scheduling information of the uplink data transmission" in the first information.
  • Step 1106 when the terminal performs the retransmission of the uplink data transmission for the Pth (P is an integer greater than or equal to 1), and the interval between the position of the retransmitted resource and the start time of the next available first resource is less than Fms (F is greater than or equal to 0), and is not included in the corresponding first information in "the G first resources corresponding to the downlink control channel, the terminal identity set corresponding to the uplink data transmission successfully received by the base station"
  • the terminal performs at least one of the following operations: the uplink data transmission fails, the terminal sends a random access signal on subsequent random access channel resources; the currently transmitted uplink data transmission fails, The terminal continues to perform uplink data transmission on the next available first resource.
  • the terminal when the terminal performs the retransmission of the uplink data transmission for the Pth time (P is an integer greater than or equal to 1), and the interval between the position of the retransmitted resource and the start time of the next available first resource is less than F ms (F is greater than or equal to 0), and is not included in the corresponding first information of “the set of terminal identifiers corresponding to the uplink data transmissions successfully received by the base station among the G first resources corresponding to the downlink control channel”
  • the identifier of the terminal may be considered that no new process is available for the terminal.
  • a base station sends uplink channel configuration information, and the uplink channel configuration information includes at least one of the following: resource configuration information occupied by an uplink channel; and configuration information of a search space for a downlink control channel.
  • the information carried on the downlink control channel includes downlink control information (Downlink Control Information) (DCI).
  • DCI Downlink Control Information
  • the uplink channel is used for data transmission of the UE in the RRC-IDLE state or the RRC-CONNECT state.
  • the base station configures three sets of uplink channel configuration information, and one set of uplink channel configuration information corresponds to a coverage enhancement level (CE level).
  • CE levels are CE level 0, CE level 1, and CE level. 2.
  • the resource configuration information occupied by the uplink channel in a set of uplink channel configuration information indicates at least one uplink channel resource, wherein the uplink channel resource can adopt time division multiplexing (TDM) and / or frequency division multiplexing (FDM) and / or code Multiplexing (CDM).
  • TDM time division multiplexing
  • FDM frequency division multiplexing
  • CDM code Multiplexing
  • the uplink channel resources are multiplexed by TDM and FDM.
  • FIG. 7 includes n uplink channel resources, numbered uplink channel resources 1 to uplink channel resources n, and adopts TDM configuration. Where the configuration period of the uplink channel resources is T ms.
  • Each uplink channel resource is divided into 2 sub-blocks through FDM. For example, uplink channel resource 1 is divided into sub-blocks 1-1 and 1-2 through FDM multiplexing, and uplink channel resource 2 is divided into sub-block 2 through FDM multiplexing. -1 and sub-block 2-2, and so on.
  • the uplink channel resource n is divided into sub-block n-1 and sub-block n-2 through FDM multiplexing.
  • a sub-block of an uplink channel resource corresponds to a piece of resource identification information.
  • a resource identifier ID1-1 of a sub-block 1-1 of the uplink channel resource 1 corresponds to a sub-block of the uplink channel resource 1.
  • the resource identifier corresponding to sub-block 1-2 is ID1-2, and so on.
  • the resource identifier corresponding to sub-block n-1 of uplink channel resource n is IDn-1, and the resource corresponding to sub-block n-2 of uplink channel resource n. Identified as IDn-2.
  • the resource identification information may be calculated based on the following information: the time domain position of the sub-block of the uplink channel resource; and the frequency domain position of the sub-block of the uplink channel resource.
  • a group of terminals can share sub-blocks of the uplink channel resource for uplink data transmission, and the coverage enhancement level of the group of terminals is the same as the coverage enhancement level corresponding to the set of uplink channel configuration information.
  • the "configuration information of the downlink control channel search space" in a set of uplink channel configuration information indicates at least one downlink control channel search space, and one downlink control channel search space corresponds to one sub-block of uplink channel resources, as shown in Fig. 7
  • the downlink control channel search space corresponding to sub-block 1-1 of uplink channel resource 1 is search space 1-1
  • the downlink control channel search space corresponding to sub-block 1-2 of uplink channel resource 1 is search space 1-2
  • the downlink control channel search space corresponding to the sub-block n-1 of the uplink channel resource n is the search space n-1
  • the downlink control channel search space corresponding to the sub-block n-2 of the uplink channel resource n is the search space n -2.
  • one downlink control channel search space includes one or more downlink control channel transmission opportunities.
  • the DCI carried in the downlink control channel in the downlink control channel search space is scrambled using CRC.
  • the information used for CRC scrambling is a resource identifier corresponding to a sub-block of uplink channel resources.
  • the resource used by the uplink channel selected by UE1 is a child of uplink channel resource 1.
  • UE1 will detect the DCI CRC scrambled through the resource identifier ID1-1 in the search space 1-1, and the DCI carries scheduling information for a downlink channel.
  • UE1 receives the downlink channel and learns the information in the downlink channel according to the scheduling information of the downlink channel.
  • the information in the downlink channel includes: in sub-block 1-1 of uplink channel resource 1, the uplink data transmission that the base station successfully receives corresponds to Terminal identity collection.
  • the terminal identifier may be carried in uplink data sent by the terminal in sub-block 1-1 of uplink channel resource 1.
  • UE1 when the terminal identity of UE1 is not included in the terminal identity set carried in the downlink channel, UE1 selects a sub-block in uplink channel resource 2 in FIG. 3 to continue uplink data transmission.
  • UE1 selects sub-block 2 in uplink channel resource 2
  • the type of row data sent on sub-block 2-2 is: uplink data not successfully transmitted on sub-block 1-1 of uplink channel resource 1; Or, new uplink data.
  • UE1 may also carry indication information on sub-block 2-2 of uplink channel resource 2 to indicate that the specific data type to be transmitted is uplink data that was not successfully transmitted on sub-block 1-1 of uplink channel resource 1; or new Uplink data.
  • UE1 may also perform at least one of the following operations: sending a random access signal on a subsequent available random access channel resource, Then trigger the random access procedure and enter the RRC-CONNECT state.
  • UE1 sends uplink data to the base station in the RRC-CONNECT state; sends a random access signal on the subsequent available random access channel resources, and then triggers the random access process, so that UE1 sends the uplink data that failed in the previous transmission in Msg3 To the base station.
  • the UE1 may implicitly indicate the operation type selected by the UE through the selected random access signal.
  • the "subsequent available random access channel resources" are available random access channel resources after the time domain resource where the DCI is located, or available after the time domain resources corresponding to the search space where the DCI is located. Random access channel resources.
  • a base station sends uplink channel configuration information, and the uplink channel configuration information includes at least one of the following: resource configuration information occupied by an uplink channel; and configuration information of a search space for a downlink control channel.
  • the information carried on the downlink control channel includes downlink control information (Downlink Control Information).
  • Downlink Control Information Downlink Control Information
  • the uplink channel is used for data transmission of the UE in the RRC-IDLE state or the RRC-CONNECT state.
  • the base station configures three sets of uplink channel configuration information, and one set of uplink channel configuration information corresponds to a coverage enhancement level (CE level).
  • CE level coverage enhancement level
  • the CE levels are CE level 0, CE level 1, and CE level. 2.
  • the resource configuration information occupied by the uplink channel in a set of uplink channel configuration information indicates at least one uplink channel resource, wherein the uplink channel resource can adopt time division multiplexing (TDM) and / or frequency division multiplexing (FDM) and / or code Multiplexing (CDM).
  • TDM time division multiplexing
  • FDM frequency division multiplexing
  • CDM code Multiplexing
  • the uplink channel resources are multiplexed by TDM and FDM.
  • FIG. 8 includes n uplink channel resources, numbered uplink channel resources 1 to uplink channel resources n, and adopts TDM configuration. Where the configuration period of the uplink channel resources is T ms.
  • Each uplink channel resource is divided into 2 sub-blocks through FDM. For example, uplink channel resource 1 is divided into sub-blocks 1-1 and 1-2 through FDM multiplexing, and uplink channel resource 2 is divided into sub-block 2 through FDM multiplexing. -1 and sub-block 2-2, and so on.
  • the uplink channel resource n is divided into sub-block n-1 and sub-block n-2 through FDM multiplexing.
  • one uplink channel resource corresponds to one resource identification information.
  • the resource identifier ID1 corresponding to the uplink channel resource 1 and the resource identifier corresponding to the uplink channel resource 2 are ID2, and so on.
  • the resource identifier corresponding to the channel resource n is IDn.
  • the resource identification information may be calculated based on the following information: the time domain position of the sub-block of the uplink channel resource; and the frequency domain position of the sub-block of the uplink channel resource.
  • a group of terminals can share sub-blocks of the uplink channel resource for uplink data transmission, and the coverage enhancement level of the group of terminals is the same as the coverage enhancement level corresponding to the set of uplink channel configuration information.
  • the "configuration information of the downlink control channel search space" in a set of uplink channel configuration information indicates at least one downlink control channel search space, and one downlink control channel search space corresponds to one uplink channel resource, as shown in FIG. 8,
  • the downlink control channel search space corresponding to uplink channel resource 1 is search space 1
  • the downlink control channel search space corresponding to uplink channel resource 2 is search space 2
  • so on and the downlink control channel search space corresponding to uplink channel resource n is the search space. n.
  • one downlink control channel search space includes one or more downlink control channel transmission opportunities.
  • the DCI carried in the downlink control channel in the downlink control channel search space is scrambled using CRC.
  • the information used for CRC scrambling is the resource identifier of the uplink channel resource.
  • the seventh embodiment after UE1 selects the uplink channel indicated in the uplink channel configuration information of CE level 0 for uplink data transmission, as shown in FIG. 8, when UE1 selects uplink data transmission on uplink channel resource 1, Sub-block 1-1 or sub-block 1-2 will be selected randomly. In this seventh embodiment, when UE1 selects sub-block 1-1 of uplink channel resource 1 for uplink data transmission, UE1 will pass the detection in search space 1.
  • the resource identifier ID1 performs CRC scrambled DCI, and the DCI carries scheduling information of one downlink channel.
  • UE1 receives the downlink channel and learns the information in the downlink channel according to the scheduling information of the downlink channel.
  • the information in the downlink channel includes at least one of the following:
  • uplink channel resource 1 the terminal identifier set corresponding to the uplink data transmission that the base station successfully receives; and resource scheduling information for the retransmission of the uplink data transmission.
  • the identifier of the terminal is carried in uplink data sent by the terminal in uplink channel resource 1.
  • the "retransmission resource scheduling information of the uplink data transmission" is configured for terminals that have not been successfully transmitted in the uplink channel resource 1. Since the base station does not know which terminals have not been successfully transmitted, this retransmission scheduling information , Not for a specific terminal, but for a terminal that has not successfully transmitted. If the terminal does not detect the terminal identification sent by it in the uplink data transmission in the information in the downlink channel, it is considered that the transmission was not successful, and therefore the retransmission operation may be performed according to the resources indicated by the retransmission scheduling information.
  • the terminal identity of UE1 when the terminal identity of UE1 is not included in the terminal identity set carried in the downlink channel, and the "retransmission resource scheduling information for uplink data transmission" is not configured with a retransmission resource
  • UE1 selects one of the uplink channel resources 2 in FIG. 8
  • the sub-block performs retransmission transmission of uplink data that is not successfully transmitted on the sub-block 1-1 of the uplink channel resource 1.
  • the UE 1 selects the sub-block 1 in the uplink channel resource 2.
  • the meaning of the time-frequency domain resource for which no retransmission resource is configured in the "retransmission resource scheduling information for uplink data transmission” is: "resource transmission information for retransmission for uplink data transmission” This is a configurable Determines whether the "retransmitted resource scheduling information for uplink data transmission" exists through some displayed or hidden indications in the information in the downlink channel.
  • the meaning is: "resource transmission information for uplink data transmission rescheduling information” has a configuration , But the value of this configuration is invalid or meaningless.
  • the standard stipulates that the value of “retransmission resource scheduling information for uplink data transmission” is "0-13", but the information in the downlink channel is "uplink”.
  • the value of the “retransmission resource scheduling information” configuration for data transmission is 14, and the value of this configuration is considered to be an invalid value.
  • a base station sends uplink channel configuration information, and the uplink channel configuration information includes at least one of the following: resource configuration information occupied by an uplink channel; and configuration information of a search space for a downlink control channel.
  • the information carried on the downlink control channel includes downlink control information (Downlink Control Information).
  • Downlink Control Information Downlink Control Information
  • the uplink channel is used for data transmission of the UE in an RRC-IDLE state or an RRC-CONNECT state.
  • the base station configures three sets of uplink channel configuration information, and one set of uplink channel configuration information corresponds to a coverage enhancement level (CE level).
  • CE levels are CE level 0, CE level 1, and CE level. 2.
  • the resource configuration information occupied by the uplink channel in a set of uplink channel configuration information indicates at least one uplink channel resource, wherein the uplink channel resource can adopt time division multiplexing (TDM) and / or frequency division multiplexing (FDM) and / or code Multiplexing (CDM).
  • TDM time division multiplexing
  • FDM frequency division multiplexing
  • CDM code Multiplexing
  • the uplink channel resources are multiplexed by TDM and FDM.
  • FIG. 10 includes n uplink channel resources, numbered uplink channel resources 1 to uplink channel resources n, and adopts TDM configuration. Where the configuration period of the uplink channel resources is T ms.
  • Each uplink channel resource is divided into 2 sub-blocks through FDM. For example, uplink channel resource 1 is divided into sub-blocks 1-1 and 1-2 through FDM multiplexing, and uplink channel resource 2 is divided into sub-block 2 through FDM multiplexing. -1 and sub-block 2-2, and so on.
  • the uplink channel resource n is divided into sub-block n-1 and sub-block n-2 through FDM multiplexing.
  • one uplink channel resource corresponds to two resource identifiers.
  • the resource identifiers ID1-A and ID1-B corresponding to the uplink channel resource 1 and the resource identifier corresponding to the uplink channel resource 2 are ID2.
  • -A and ID2-B, and so on, and the resource identifiers corresponding to the uplink channel resource n are ID nA and ID nB.
  • the resource identification information may be calculated based on the following information: the time domain position of the sub-block of the uplink channel resource; and the frequency domain position of the sub-block of the uplink channel resource.
  • a group of terminals can share sub-blocks of the uplink channel resource for uplink data transmission, and the coverage enhancement level of the group of terminals is the same as the coverage enhancement level corresponding to the set of uplink channel configuration information.
  • the "configuration information of the downlink control channel search space" in a set of uplink channel configuration information indicates at least one downlink control channel search space, and one downlink control channel search space corresponds to one uplink channel resource, as shown in FIG. 10,
  • the downlink control channel search space corresponding to uplink channel resource 1 is search space 1, that is, resource identifiers ID1-A and ID1-B correspond to search space 1, that is, resource identifiers ID2-A and ID2-B correspond to search space 2, and so on. That is, the resource identifiers IDA and IDB correspond to the search space n.
  • one downlink control channel search space includes one or more downlink control channel transmission opportunities.
  • the DCI carried in the downlink control channel in the downlink control channel search space is scrambled using CRC.
  • the information used for CRC scrambling is the resource identifier of the uplink channel resource.
  • the eighth embodiment after UE1 selects the uplink channel indicated in the uplink channel configuration information of CE level 0 for uplink data transmission, as shown in FIG. 10, when UE1 selects uplink data transmission on uplink channel resource 1. , Then sub-block 1-1 or sub-block 1-2 will be randomly selected. In this embodiment, after UE 1 selects sub-block 1-1 of uplink channel resource 1 for uplink data transmission, it will detect the downlink of search space 1.
  • DCI type 1 information carried in DCI that is CRC scrambled by resource identifier ID1-A in search space 1 includes: in uplink channel resource 1, The terminal identity set corresponding to the uplink data transmission successfully received by the base station.
  • DCI type 2 The information carried in the DCI CRC scrambled by the resource identifier ID1-B in the search space 1 includes: retransmission resource scheduling information for uplink data transmission.
  • UE1 If UE1 detects that the terminal identity is in DCI type 1, it considers that uplink data transmission is successfully received by the base station in sub-block 1-1 of uplink channel resource 1; otherwise, UE1 needs to retransmit the uplink data transmission indicated by DCI type 2 Retransmission operation of the resource scheduling information.
  • the UE1 needs to perform a retransmission operation according to the resource scheduling information of the retransmission of the uplink data transmission indicated by the DCI type 2.
  • M is an integer greater than or equal to 1
  • UE1 selects the next coverage enhancement level of CE level 0, that is, the uplink channel indicated in the uplink channel configuration information corresponding to CE level 1 for uplink data transmission.
  • the CE level corresponding to the uplink channel used by UE1 for uplink data transmission is the maximum coverage enhancement level, that is, CE level 2 and UE1 is Qth (Q is an integer greater than or equal to 1) on CE level 2 ) Times after performing the uplink data transmission (including the first transmission and / or retransmission), and when the terminal identity of UE1 is not detected in the corresponding DCI type 1, UE1 considers that the uplink data transmission has failed, and UE1 Random access signals are sent on the access channel resources to trigger a random access process.
  • the "subsequent available random access channel resources" are available random access channel resources after the time domain resource where the DCI is located, or available after the time domain resources corresponding to the search space where the DCI is located. Random access channel resources.
  • the CE level corresponding to the uplink channel used by UE1 for uplink data transmission is the maximum coverage enhancement level, that is, CE level 2, and UE1 performs the Pth (P is an integer greater than or equal to 1) times.
  • P is an integer greater than or equal to 1
  • UE1 considers that the uplink data transmission has failed, and UE1 is in the subsequent random access channel resources
  • a random access signal is sent to trigger a random access process.
  • the "subsequent available random access channel resources” are available random access channel resources after the time domain resource where the DCI is located, or available after the time domain resources corresponding to the search space where the DCI is located. Random access channel resources.
  • the value of P is the sum of the number of times that UE1 performs uplink data transmission in the uplink channels of CE level 0 (if UE1 is used), CE level 1 (if UE1 is used), and CE level 2.
  • FIG. 12 is a schematic structural diagram of a base station according to Embodiment 9 of the present invention. As shown in FIG. 12, the base station includes:
  • a receiving unit configured to receive first uplink data sent by a terminal, where the first uplink data is one of the following: uplink data sent by the terminal in G first resources, and the terminal in G first resources Retransmission data of the transmitted uplink data.
  • G is an integer greater than or equal to 1, and the first resource is a resource occupied by an uplink channel configured for uplink data transmission by the base station.
  • a sending unit configured to send first information to the terminal according to the received first uplink data, where the first information includes at least one of the following: the terminal corresponding to the first uplink data successfully received by the base station Identification information, and resource scheduling information for retransmission of the first uplink data.
  • the sending unit is further configured to send at least one set of configuration information of the first resource to the terminal before the base station receives the first uplink data sent by the terminal.
  • each set of configuration information of the first resource corresponds to a first level
  • the first level includes one of the following: a coverage enhancement level, a repeat transmission level of a random access channel, a repeat transmission number of the random access channel, The number of repeated transmissions corresponding to the uplink data transmission, the maximum number of bits in the transport block, and the resource location for transmitting the uplink data.
  • multiple sets of the configuration information of the first resources correspond to the same first level.
  • the first information is carried in downlink control information DCI or the first information is carried in a downlink channel and the scheduling information of the downlink channel is indicated by the downlink control information DCI;
  • the DCI uses CRC scrambling and the scrambling information used includes at least one of the following: a first identifier, a resource identifier, and a cell wireless network temporary identifier C-RNTI;
  • the first identifier includes at least one of the following: an identifier configured by the base station, an identifier common to multiple terminals, a set of identifiers corresponding to configuration information of the first resource, and an identifier corresponding to the first level.
  • the identification information of the terminal corresponding to the first uplink data successfully received by the base station includes identification information of at least one terminal, and the identification information of the terminal includes at least one of the following: a cell wireless network temporary identifier C-RNTI, International Mobile Subscriber Identity IMSI, Temporary Mobile Subscriber Identity TMSI, Service-Temporary Mobile Subscriber Identity S-TMSI.
  • the first information when the first information includes identification information of a terminal corresponding to the first uplink data that the base station successfully receives, the first information further includes at least one of the following: matches the identification information of the terminal Scheduling information for downlink data transmission of a terminal; temporary C-RNTI information matching the identification information of the terminal; C-RNTI information matching the identification information of the terminal; a terminal matching the identification information of the terminal Configuration information of the downlink control channel search space.
  • the first information When the first information includes resource scheduling information for retransmission of the first uplink data, the first information further includes: a second identifier.
  • the second identifier is used for CRC scrambling of downlink control information DCI, where the DCI includes at least one of the following: 1: Downlink control information DCI of the first information; downlink control information DCI including scheduling information of a downlink channel, wherein the downlink channel carries the first message.
  • the first information When the first information includes identification information of a terminal corresponding to the first uplink data that the base station successfully receives, the first information further includes a third identifier.
  • the type of the first information includes a first type and a second type, where the first information of the first type includes identification information of a terminal corresponding to the first uplink data that the base station successfully receives, and the second type
  • the first information includes the resource scheduling information for retransmission of the first uplink data.
  • the type of the first information is indicated by the first instruction information.
  • the first indication information is carried in at least one of the following: downlink control information DCI including first information; downlink control information DCI including scheduling information of a downlink channel, and the downlink channel is used to carry the first information information.
  • the transport block size TBS corresponding to the first message of the first type and the transport block size TBS corresponding to the first message of the second type are the same.
  • the type of the first information includes a first type and a second type, where the first information of the first type includes identification information of a terminal corresponding to the first uplink data that the base station successfully receives, and the second type
  • the first information includes the resource scheduling information for retransmission of the first uplink data.
  • the type of the first information is distinguished by at least one of the following methods: Method 1: The first type of the first message and the second type of the first message have different transport block sizes; Method 2: The first type of the first message is included.
  • the DCI of a message is different from the CRC scrambling information used by the DCI including the first message of the second type;
  • Method 3 The CRC scrambling information used by the DCI where the scheduling information corresponding to the downlink channel of the first message of the first type is located
  • the CRC scrambling information used by the DCI where the scheduling information corresponding to the downlink channel carrying the first message of the second type is located is different.
  • the type of the first information includes a first type and a second type, where the first information of the first type includes identification information of a terminal corresponding to the first uplink data that the base station successfully receives, and the second type
  • the first information of the UE includes resource scheduling information for retransmission of the first uplink data
  • the second indication information is T bits of information in the first information, and T is an integer greater than or equal to 1.
  • the type of the first information when the T bit information is in a predetermined format, the type of the first information is a first type; otherwise, the type of the first information is a second type; or when the T bit information is When the format is predetermined, the type of the first information is the second type; otherwise, the type of the first information is the first type.
  • the transport block size TBS corresponding to the first message of the first type and the transport block size TBS corresponding to the first message of the second type are the same.
  • the base station further includes a configuration unit.
  • the configuration unit is configured for a station to configure a search space for a downlink channel carrying the DCI, and the number of search spaces for the downlink channel is at least one.
  • FIG. 13 is a schematic structural diagram of a terminal according to Embodiment 10 of the present invention. As shown in FIG. 13, the terminal includes:
  • a sending unit configured to send first uplink data to the base station, where the first uplink data is one of the following: uplink data sent by the terminal in G first resources, and the terminal sent in G first resources Retransmission data of the uplink data.
  • G is an integer greater than or equal to 1, and the first resource is a resource occupied by an uplink channel configured for uplink data transmission by the base station.
  • a receiving unit configured to receive first information sent by the base station according to the received first uplink data, where the first information includes at least one of the following: a terminal corresponding to the first uplink data successfully received by the base station Identification information and resource scheduling information for retransmission of the first uplink data.
  • the receiving unit is further configured to receive at least one set of configuration information of the first resource sent by the base station.
  • each set of configuration information of the first resource corresponds to a first level
  • the first level includes at least one of the following: a coverage enhancement level, a repeat transmission level of a random access channel, and a number of repeated transmissions of the random access channel. , The number of repeated transmissions corresponding to the uplink data transmission, the maximum number of bits in the transport block, and the resource location for transmitting the uplink data.
  • multiple sets of the configuration information of the first resources correspond to the same first level.
  • the first level corresponding to the G first resources is the same as the first level of the terminal.
  • the first information is carried in the downlink control information DCI or the first information is carried in the downlink channel and the scheduling information of the downlink channel is indicated by the downlink control information DCI.
  • the DCI uses CRC scrambling and the scrambling information used includes at least one of the following: a first identifier, a resource identifier, and a cell wireless network temporary identifier C-RNTI;
  • the first identifier includes at least one of the following: an identifier configured by the base station, an identifier common to multiple terminals, a set of identifiers corresponding to configuration information of the first resource, and an identifier corresponding to the first level.
  • the identification information of the terminal corresponding to the first uplink data successfully received by the base station includes identification information of at least one terminal, and the identification information of the terminal includes at least one of the following: a cell wireless network temporary identifier C-RNTI, International Mobile Subscriber Identity IMSI, Temporary Mobile Subscriber Identity TMSI, Service-Temporary Mobile Subscriber Identity S-TMSI.
  • the first uplink data includes identification information of the terminal.
  • the terminal further includes a first execution unit, where the first execution unit is configured to: when the first condition is satisfied, the terminal performs uplink data transmission among G first resources available in the subsequent period or the terminal performs subsequent Send a random access signal on the available random access channel resources or trigger the terminal to initiate random access.
  • the first condition includes at least one of: (1) the identification information of the terminal is not included in the identification information of the terminal corresponding to the first uplink data successfully received by the base station; (2) includes the The downlink control channel search space detection of the downlink control information DCI of the first information times out; (3) the downlink control channel search space detection of the downlink control information DCI times out, wherein the DCI includes a downlink channel carrying the first information (4) The terminal does not detect the identification information of the terminal within the configured time period.
  • the first information includes only identification information of a terminal corresponding to the first uplink data that the base station successfully receives.
  • the terminal further includes a second execution unit, where the second execution unit is configured to, when the second condition is satisfied, perform retransmission of the first uplink data among the G first resources available in the subsequent time. Or the first uplink data transmission does not support retransmission.
  • the second condition includes at least one of: (1) the identification information of the terminal is not included in the identification information of the terminal corresponding to the first uplink data successfully received by the base station; (2) the first A time domain-frequency domain resource is not configured in the resource scheduling information for retransmission of uplink data or a valid time domain-frequency domain resource is not configured in the resource scheduling information for the retransmission of the first uplink data;
  • the downlink control channel search space detection of the downlink control information DCI of the first information has timed out; (4) the downlink control channel search space detection of the downlink control information DCI has timed out, wherein the DCI includes a downlink carrying the first information Channel scheduling information; (5)
  • the terminal does not detect the identification information of the terminal within the configured duration.
  • the terminal further includes a third execution unit.
  • the third execution unit is configured to perform at least one of the following operations when the third condition is met: reselect a set of configuration information of the first resource. Sending the uplink data of the indicated first resource; among the configuration information of at least one set of the first resource corresponding to the current first level, reselecting the set of the first resource indicated by the configuration information of the first resource Resources to send uplink data; among at least one set of configuration information of the first resource corresponding to the next first level, a set of the first resources indicated by the configuration information of the first resource is selected for uplink data transmission.
  • the third condition includes: on the first resource corresponding to the current first level, after the terminal sends the first uplink data for the Mth time, the terminal includes all information included in the corresponding received first information.
  • the identification information of the terminal corresponding to the first uplink data successfully received by the base station does not include the identification information of the terminal, and M is an integer greater than or equal to 1.
  • the terminal further includes a fourth execution unit, where the fourth execution unit is configured to perform at least one of the following operations when the fourth condition is satisfied: the terminal considers that the first uplink data transmission fails; Among the configuration information of at least one set of the first resource corresponding to the next first level, a set of the first resource indicated by the configuration information of the first resource is selected for uplink data transmission; Send a random access signal on the in-channel resource or trigger the terminal to initiate random access.
  • the fourth condition includes at least one of the following: (1) On the first resource corresponding to the current first level, after the terminal sends the first uplink data for the Mth time, it receives the corresponding
  • the first information includes the identification information of the terminal corresponding to the first uplink data that the base station successfully received does not include the identification information of the terminal, and M is an integer greater than or equal to 1; (2) the current first uplink data
  • the first level corresponding to the first resource occupied by the transmission is L, where L is the index of the largest first level or the first level index configured by the base station; (3) the total number of times the terminal sends the first uplink data Is J, J is an integer number of times greater than or equal to 1; (4) at the current first level, the DCI search space detection timeout of the DCI carrying the first information has timed out; (5) at the current first level, the bearer of the DCI The downlink control channel search space detection times out, and the DCI includes scheduling information of a downlink channel carrying the first information.
  • the terminal further includes a fifth execution unit, where the fifth execution unit is configured to, when the fifth condition is satisfied, the terminal considers that the first uplink data transmission is successful.
  • the fifth condition includes at least one of the following: (1) the terminal does not detect resource retransmission information of the first uplink data within a configured duration; (2) the first uplink data In the downlink control channel search space corresponding to the data transmission, no resource scheduling information of the retransmission of the first uplink data is detected.
  • FIG. 14 is a schematic structural diagram of a base station according to Embodiment 11 of the present invention. As shown in FIG. 14, the base station includes:
  • the sending unit is configured to send uplink channel configuration information to the terminal, where the uplink channel configuration information includes at least one of the following: resource configuration information occupied by an uplink channel; and configuration information of a search space for a downlink control channel.
  • the uplink channel is used for data transmission of a terminal or terminal group in an RRC-CONNECT state or data transmission in a non-RRC-CONNECT state.
  • the information carried on the downlink control channel includes downlink control information (Downlink Control Information).
  • the downlink control channel search space includes one or more downlink control channel transmission opportunities.
  • the uplink channel configuration information may be carried in one signaling or sent through multiple signalings. For example, when the uplink channel configuration information is sent through multiple signaling, the resource configuration information occupied by the uplink channel may be sent through signaling 1, and the configuration information of the downlink control channel search space may be sent through signaling 2.
  • the base station further includes a configuration unit configured to configure at least one set of the uplink channel configuration information.
  • the set of the uplink channel configuration information may configure one or more D first resources, where D is an integer greater than or equal to 1.
  • Each set of the uplink channel configuration information corresponds to a first level.
  • the first level includes one of the following: a coverage enhancement level; a repeat transmission level of a random access channel; a number of repeated transmissions of the random access channel; a corresponding number of repeated transmissions during uplink data transmission; a maximum number of bits in a transmission block; Describe the resource location of uplink data.
  • the resource configuration information occupied by the uplink channel indicates at least one first resource
  • the first resource may adopt time division multiplexing (TDM) and / or frequency division multiplexing (FDM) and / or code division multiplexing. (CDM) multiplexing. That is, one or more first resources (that is, uplink channel resources for uplink data transmission) can be configured at one time; when multiple are configured, it is preferable to use TDM and / or FDM for multiple uplink channel resources; further preferred Ground, multiple uplink channel resources multiplexed by TDM are discrete in the time domain.
  • FIG. 5 is a schematic diagram of multiple uplink channel resources using FDM and TDM multiplexing. As shown in FIG.
  • each uplink channel resource is divided into 2 sub-blocks through FDM.
  • uplink channel resource 1 is divided into sub-blocks 1-1 and 1-2 through FDM multiplexing
  • uplink channel resource 2 is divided into sub-block 2 through FDM multiplexing. -1 and sub-block 2-2, and so on.
  • the uplink channel resource n is divided into sub-block n-1 and sub-block n-2 through FDM multiplexing.
  • FIG. 6 is a schematic diagram of multiple uplink channel resources using FDM and TDM multiplexing. As shown in FIG.
  • the uplink channel resource configuration period is T ms.
  • Each uplink channel resource is divided into 4 sub-blocks through FDM and FDM.
  • the uplink channel resource 1 is divided into sub-block 1-1, sub-block 1-2, sub-block 1-3, and sub-block 1-4.
  • the uplink channel Resource 2 is divided into sub-block 2-1, sub-block 2-2, sub-block 2-3, and sub-block 2-4, and so on.
  • the uplink channel resource n is divided into sub-block n-1, sub-block n-2, and sub-block. Block n-3 and sub-block n-4.
  • the D first resources correspond to F resource identification information, and D and F are integers greater than or equal to 1).
  • the resource identification information is calculated based on at least one of the following: a time domain location of the first resource; a frequency domain location of the first resource; and a coder or a set of coders corresponding to the first resource.
  • the function of the F resource identifiers is to identify the D first resources, because the resource configuration information occupied by the uplink channel indicates at least 1 first resource, and each of the F resource identifiers is The D corresponding first resources can be identified.
  • the value of F is preferably 1 or 2.
  • the method for calculating the resource identification information includes the following two methods: Method 1: Sub-block 1-1 and sub-block 1-2 of the uplink channel resource 1 correspond to the same resource identification information, For example, it is ID1, and ID1 is calculated based on at least the time domain positions of subblocks 1-1 and 1-2. Sub-block 2-1 and sub-block 2-2 of the uplink channel resource 2 correspond to the same resource identification information, for example, ID2, and ID2 is calculated based on at least the time domain positions of sub-block 2-1 and sub-block 2-2. And so on.
  • Sub-block 1-1 of uplink channel resource 1 corresponds to a piece of resource identification information, such as ID1-1, and ID 1-1 is calculated based on at least the time and frequency domain positions of sub-block 1-1;
  • uplink channel resource 1 Sub-block 1-2 corresponds to a piece of resource identification information, for example ID1-2, and ID1-2 is calculated based on at least the time and frequency domain positions of sub-block 1-2;
  • sub-block 2-1 of uplink channel resource 2 corresponds A piece of resource identification information is, for example, ID2-1, and ID2-1 is calculated based on at least the time domain position and the frequency domain position of sub-block 2-1.
  • Sub-block 2-2 of uplink channel resource 2 corresponds to a piece of resource identification information, such as ID2-2 and ID2-2 are calculated based on at least the time domain position and the frequency domain position of the sub-block 2-2; and so on.
  • the first resource is used for uplink data transmission of at least one terminal.
  • the terminal may be a terminal or a group of terminals.
  • the terminal is a group of terminals, that is, a group of terminals can share the uplink channel for uplink data transmission.
  • the uplink data transmission refers to uplink data transmission in a non-RRC-CONNECT state, and the non-RRC-CONNECT state includes at least an RRC-IDLE state.
  • the first levels corresponding to the at least one terminal are the same.
  • each set of the uplink channel configuration information corresponds to a first level, that is, at least one first resource indicated by the uplink channel configuration information corresponds to a first level.
  • a terminal or a group of terminals also corresponds to a first level.
  • the configuration information of the downlink control channel search space indicates at least one downlink control channel search space, and meets at least one of the following: one downlink control channel search space corresponds to D1 (D1 is an integer greater than or equal to 1). First resource; one downlink control channel search space corresponds to F1 (F1 is an integer greater than or equal to 1) resource identifiers.
  • the number of the first resources corresponding to different downlink control channel search spaces may be different or the same.
  • the number of the resource identifiers corresponding to different downlink control channel search spaces may be different or the same.
  • FIG. 7 is a schematic diagram of a downlink control channel search space in an FDD system.
  • the sub-block 1-1 of the uplink channel resource 1 corresponds to a piece of resource identification information, such as ID1-1, and the downlink corresponding to the sub-block 1-1.
  • the control channel search space is search space 1-1; sub-block 1-2 of uplink channel resource 1 corresponds to a resource identification information, such as ID1-2, and the downlink control channel search space corresponding to sub-block 1-2 is search space 1- 2; sub-block 2-1 of uplink channel resource 2 corresponds to a piece of resource identification information, such as ID2-1, and the downlink control channel search space corresponding to sub-block 2-1 is search space 2-1; sub-block of uplink channel resource 2 2-2 corresponds to a piece of resource identification information, such as ID2-2, and the downlink control channel search space corresponding to sub-block 2-2 is search space 2-2; and so on.
  • FIG. 8 is another schematic diagram of a downlink control channel search space in a TDD system.
  • sub-block 1-1 and sub-block 1-2 of uplink channel resource 1 correspond to one piece of resource identification information, such as ID1 and ID1.
  • the downlink control channel search space is search space 1.
  • Sub-block 2-1 and sub-block 2-2 of uplink channel resource 2 correspond to one piece of resource identification information, such as ID2, and the downlink control channel search space corresponding to ID2 is search space 2. analogy.
  • the DCI carried in the downlink control channel search space uses CRC plus Scrambling, wherein the CRC scrambling information is a resource identifier corresponding to the plurality of first resources.
  • the resource identifiers corresponding to the plurality of first resources are determined according to at least one of: a time domain location of the plurality of first resources; a frequency domain location of the plurality of first resources; the plurality of first resources corresponding The index of the set of coders.
  • FIG. 9 is another schematic diagram of a downlink control channel search space in an FDD system. As shown in FIG.
  • uplink channel resource 1 corresponds to 2 resource identification information, such as ID1-A and ID1-B, and downlink control corresponding to ID1-A.
  • the channel search space is search space 1-A
  • the downlink control channel search space corresponding to ID1-B is search space 1-B
  • the uplink channel resource 2 corresponds to 2 resource identification information, such as ID2-A and ID2-B, ID2-
  • the downlink control channel search space corresponding to A is search space 2-A
  • the downlink control channel search space corresponding to ID2-B is search space 2-B
  • FIG. 10 is another schematic diagram of a downlink control channel search space in an FDD system. As shown in FIG.
  • uplink channel resource 1 corresponds to 2 resource identification information, such as ID1-A and ID1-B and ID1-A and ID1-B.
  • the corresponding downlink control channel search space is search space 1.
  • the uplink channel resource 2 corresponds to two pieces of resource identification information, for example, ID2-A and ID2-B, and the downlink control channel search space corresponding to ID2-A and ID2-B is search space 2; and so on.
  • the terminal After receiving the uplink channel configuration information sent by the base station, the terminal sends first uplink data to the base station according to the uplink channel configuration information, and the base station receives the first uplink data sent by the terminal.
  • the terminal After receiving the uplink channel configuration information sent by the base station, the terminal sends first uplink data to the base station according to the uplink channel configuration information, and the base station receives the first uplink data sent by the terminal.
  • the base station After receiving the uplink channel configuration information sent by the base station, the terminal sends first uplink data to the base station according to the uplink channel configuration information, and the base station receives the first uplink data sent by the terminal.
  • Embodiment 3 I will not repeat them here.
  • the sending unit is further configured to send first information to the terminal, where the first information includes at least one of the following: Among the G first resources corresponding to the downlink control channel, the base station successfully receives The terminal identifier set corresponding to the uplink data transmission, where G is an integer greater than or equal to 1; the retransmission resource scheduling information of the uplink data transmission.
  • the first information may be carried in a DCI or a downlink channel, and scheduling information of the downlink channel is indicated by the DCI.
  • the DCI may be downlink control information (DCI) carried on the downlink control channel, or may be other DCI messages.
  • DCI downlink control information
  • the terminal identifier set may also be referred to as terminal identification information, and the terminal identifier may be an identifier such as a C-RNTI assigned to the terminal during the RRC connection establishment process or an s-TMSI of the terminal.
  • the retransmission resource scheduling information of the uplink data transmission is used to indicate configuration information of retransmission resources for retransmission by a terminal that has not been successfully transmitted in the first resource corresponding to the downlink control channel. Since the base station does not know which terminals have not been successfully transmitted, the retransmission scheduling information is not directed to the determined terminals, but to terminals that have not successfully transmitted. If the terminal does not detect the terminal identity sent by it in the uplink data transmission in the DCI, it is considered that the transmission is not successful, and therefore the retransmission operation may be performed according to the resource indicated by the retransmission scheduling information.
  • the G first resources include at least one of the following: D1 (D1 is an integer greater than or equal to 1) of the first resources corresponding to a downlink control channel search space; and F1 ( F1 is an integer greater than or equal to 1) the first resource corresponding to the resource identifier.
  • the terminal identifier set corresponding to the uplink data transmission successfully received by the base station and “the resource scheduling information for the retransmission of the uplink data transmission” may be carried in The same first information may be carried in different first information.
  • the terminal identifier set corresponding to the uplink data transmission successfully received by the base station and “the resource scheduling information for the retransmission of the uplink data transmission” are carried in different
  • the DCI carrying "the set of terminal identifiers corresponding to the uplink data transmission successfully received by the base station among the G first resources corresponding to the downlink control channel” and the "retransmission of the uplink data transmission” The CRC scrambling sequence used by the DCI of the "Resource Scheduling Information" is different.
  • the first information further includes configuration information of a downlink control channel search space corresponding to the retransmission of the uplink data transmission.
  • the CRC scrambling information of the DCI message sent in the downlink control channel search space includes one of the following: CRC scrambling information of the DCI message in the downlink control channel search space corresponding to the first transmission of the uplink data transmission; CRC scrambling information configured by the first information.
  • the configuration information of the downlink control channel search space corresponding to the retransmission of the uplink data transmission includes at least one of the following: a time-frequency domain resource size occupied by the downlink control channel search space; and the downlink control channel search space Occupied time-frequency domain resource location.
  • the time-frequency domain resource location occupied by the downlink control channel search space indicates: the start time of the time-frequency domain resource occupied by the search space and the end time of the retransmitted resource of the uplink data transmission Time domain interval.
  • the terminal identifier is carried by uplink data sent by the terminal in the first resource.
  • the first information includes "in the D1 first resources corresponding to the downlink control channel, the terminal identifier set corresponding to the uplink data transmission successfully received by the base station", the first information includes It also includes at least one of the following: scheduling information for downlink data transmission of a terminal matching the terminal identification; C-RNTI information of the terminal matching the terminal identification; and configuration information of a downlink control channel search space of the terminal matching the terminal identification.
  • the role of the C-RNTI information of the terminal that matches the terminal identifier and the configuration information of the downlink control channel search space of the terminal that matches the terminal identifier is to: through these two information, the terminal can obtain a dedicated downlink control channel Search space, where the DCI information carried is scrambled by C-RNTI.
  • the DCI may carry scheduling information related to an uplink channel and a downlink channel of a terminal.
  • FIG. 15 is a schematic diagram of a terminal according to Embodiment 12 of the present invention. As shown in FIG. 15, the method includes:
  • a sending unit is configured to transmit uplink data through an uplink channel.
  • the uplink channel is configured by the base station through uplink channel configuration information, where the uplink channel configuration information includes at least one of the following: resource information occupied by the uplink channel; and downlink control channel search space. Configuration information.
  • the information carried on the downlink control channel includes downlink control information (Downlink Control Information).
  • the downlink control channel search space includes one or more downlink control channel transmission opportunities.
  • the uplink channel is used for data transmission of a terminal or terminal group in an RRC-CONNECT state or data transmission in a non-RRC-CONNECT state.
  • the uplink channel is configured by a base station through uplink channel configuration information, and includes: the base station configures at least one set of the uplink channel configuration information, and each set of the uplink channel configuration information corresponds to a first level.
  • the first level includes at least one of the following: a coverage enhancement level; a repeat transmission level of a random access channel; a number of repeated transmissions of the random access channel; a corresponding number of repeated transmissions during uplink data transmission; and a maximum number of bits in a transmission block A resource location for transmitting the uplink data.
  • the terminal further includes a receiving unit configured to receive the uplink channel configuration information sent by a base station.
  • the uplink channel configuration information may be carried in one signaling, or sent through multiple signalings.
  • the uplink channel configuration information is sent through multiple signaling, for example, the resource configuration information occupied by the uplink channel is sent through signaling 1, and the configuration information of the downlink control channel search space is sent through signaling 2.
  • the terminal may select a set of uplink channel configuration information from the received uplink channel configuration information, and the selection is based on the first level corresponding to the uplink channel configuration information that can be selected for the terminal and the first level of the terminal.
  • the rank is the same.
  • the uplink channel is used for uplink data transmission of at least one terminal.
  • the first levels corresponding to the at least one terminal are the same.
  • the terminal may be a terminal or a group of terminals.
  • the terminal is a group of terminals, that is, a group of terminals can share the uplink channel for uplink data transmission.
  • the first levels corresponding to the groups of terminals are the same.
  • the uplink data transmission may refer to uplink data transmission in a non-RRC-CONNECT state.
  • the non-RRC-CONNECT state includes at least the RRC-IDLE state.
  • the resource configuration information occupied by the uplink channel indicates at least one first resource
  • the first resource may adopt time division multiplexing (TDM) and / or frequency division multiplexing (FDM) and / or code division multiplexing. (CDM) multiplexing. That is, one or more first resources (that is, uplink channel resources for uplink data transmission) can be configured at one time; when multiple are configured, it is preferable to use TDM and / or FDM for multiple uplink channel resources; further preferred Ground, multiple uplink channel resources multiplexed by TDM are discrete in the time domain.
  • FIG. 5 is a schematic diagram of multiple uplink channel resources using FDM and TDM multiplexing. As shown in FIG.
  • each uplink channel resource is divided into 2 sub-blocks through FDM.
  • uplink channel resource 1 is divided into sub-blocks 1-1 and 1-2 through FDM multiplexing
  • uplink channel resource 2 is divided into sub-block 2 through FDM multiplexing. -1 and sub-block 2-2, and so on.
  • the uplink channel resource n is divided into sub-block n-1 and sub-block n-2 through FDM multiplexing.
  • FIG. 6 is a schematic diagram of multiple uplink channel resources using FDM and TDM multiplexing. As shown in FIG.
  • the uplink channel resource configuration period is T ms.
  • Each uplink channel resource is divided into 4 sub-blocks through FDM and FDM.
  • the uplink channel resource 1 is divided into sub-block 1-1, sub-block 1-2, sub-block 1-3, and sub-block 1-4.
  • the uplink channel Resource 2 is divided into sub-block 2-1, sub-block 2-2, sub-block 2-3, and sub-block 2-4, and so on.
  • the uplink channel resource n is divided into sub-block n-1, sub-block n-2, and sub-block. Block n-3 and sub-block n-4.
  • the D first resources correspond to F resource identification information, and D and F are integers greater than or equal to 1).
  • the resource identification information is calculated based on at least one of the following: a time domain location of the first resource; a frequency domain location of the first resource; and a coder or a set of coders corresponding to the first resource.
  • the function of the F resource identifiers is to identify the D first resources, because the resource configuration information occupied by the uplink channel indicates at least 1 first resource, and each of the F resource identifiers is The D corresponding first resources can be identified.
  • the value of F is preferably 1 or 2.
  • the calculation method of the resource identification information includes the following two methods:
  • Sub-block 1-1 and sub-block 1-2 of the uplink channel resource 1 correspond to the same resource identification information, for example, ID1, and ID1 is calculated based on at least the time domain positions of sub-block 1-1 and sub-block 1-2.
  • Sub-block 2-1 and sub-block 2-2 of the uplink channel resource 2 correspond to the same resource identification information, for example, ID2, and ID2 is calculated based on at least the time domain positions of sub-block 2-1 and sub-block 2-2. And so on.
  • Sub-block 1-1 of uplink channel resource 1 corresponds to a piece of resource identification information, such as ID1-1, and ID 1-1 is calculated based on at least the time and frequency domain positions of sub-block 1-1;
  • uplink channel resource 1 Sub-block 1-2 corresponds to a piece of resource identification information, for example ID1-2, and ID1-2 is calculated based on at least the time and frequency domain positions of sub-block 1-2;
  • sub-block 2-1 of uplink channel resource 2 corresponds A piece of resource identification information is, for example, ID2-1, and ID2-1 is calculated based on at least the time domain position and the frequency domain position of sub-block 2-1.
  • Sub-block 2-2 of uplink channel resource 2 corresponds to a piece of resource identification information, such as ID2-2 and ID2-2 are calculated based on at least the time domain position and the frequency domain position of the sub-block 2-2; and so on.
  • the first resource is used for uplink data transmission of at least one terminal.
  • the terminal may be a terminal or a group of terminals.
  • the terminal is a group of terminals, that is, a group of terminals can share the uplink channel for uplink data transmission.
  • the uplink data transmission refers to uplink data transmission in a non-RRC-CONNECT state, and the non-RRC-CONNECT state includes at least an RRC-IDLE state.
  • the first levels corresponding to the at least one terminal are the same.
  • each set of the uplink channel configuration information corresponds to a first level, that is, at least one first resource indicated by the uplink channel configuration information corresponds to a first level.
  • a terminal or a group of terminals also corresponds to a first level.
  • the configuration information of the downlink control channel search space indicates at least one downlink control channel search space, and meets at least one of the following: one downlink control channel search space corresponds to D1 (D1 is an integer greater than or equal to 1). First resource; one downlink control channel search space corresponds to F1 (F1 is an integer greater than or equal to 1) resource identifiers.
  • the number of the first resources corresponding to different downlink control channel search spaces may be different or the same.
  • the number of the resource identifiers corresponding to different downlink control channel search spaces may be different or the same.
  • FIG. 7 is a schematic diagram of a downlink control channel search space in an FDD system.
  • the sub-block 1-1 of the uplink channel resource 1 corresponds to a piece of resource identification information, such as ID1-1, and the downlink corresponding to the sub-block 1-1.
  • the control channel search space is search space 1-1; sub-block 1-2 of uplink channel resource 1 corresponds to a resource identification information, such as ID1-2, and the downlink control channel search space corresponding to sub-block 1-2 is search space 1- 2; sub-block 2-1 of uplink channel resource 2 corresponds to a piece of resource identification information, such as ID2-1, and the downlink control channel search space corresponding to sub-block 2-1 is search space 2-1; sub-block of uplink channel resource 2 2-2 corresponds to a piece of resource identification information, such as ID2-2, and the downlink control channel search space corresponding to sub-block 2-2 is search space 2-2; and so on.
  • FIG. 8 is another schematic diagram of a downlink control channel search space in a TDD system.
  • sub-block 1-1 and sub-block 1-2 of uplink channel resource 1 correspond to one piece of resource identification information, such as ID1 and ID1.
  • the downlink control channel search space is search space 1.
  • Sub-block 2-1 and sub-block 2-2 of uplink channel resource 2 correspond to one piece of resource identification information, such as ID2, and the downlink control channel search space corresponding to ID2 is search space 2. analogy.
  • the DCI carried in the downlink control channel search space uses CRC and Scrambling, wherein the CRC scrambling information is a resource identifier corresponding to the plurality of first resources.
  • the resource identifiers corresponding to the plurality of first resources are determined according to at least one of: a time domain location of the plurality of first resources; a frequency domain location of the plurality of first resources; the plurality of first resources corresponding The index of the set of coders.
  • FIG. 9 is another schematic diagram of a downlink control channel search space in an FDD system. As shown in FIG.
  • uplink channel resource 1 corresponds to 2 resource identification information, such as ID1-A and ID1-B, and downlink control corresponding to ID1-A.
  • the channel search space is search space 1-A
  • the downlink control channel search space corresponding to ID1-B is search space 1-B
  • the uplink channel resource 2 corresponds to 2 resource identification information, such as ID2-A and ID2-B, ID2-
  • the downlink control channel search space corresponding to A is search space 2-A
  • the downlink control channel search space corresponding to ID2-B is search space 2-B
  • FIG. 10 is another schematic diagram of a downlink control channel search space in an FDD system. As shown in FIG.
  • uplink channel resource 1 corresponds to 2 resource identification information, such as ID1-A and ID1-B and ID1-A and ID1-B.
  • the corresponding downlink control channel search space is search space 1.
  • the uplink channel resource 2 corresponds to two pieces of resource identification information, for example, ID2-A and ID2-B, and the downlink control channel search space corresponding to ID2-A and ID2-B is search space 2; and so on.
  • the receiving unit is further configured to receive a first message sent by a base station, where the first message includes at least one of the following: among the G first resources corresponding to the downlink control channel, the uplink successfully received by the base station The terminal identification set corresponding to the data transmission, where G is an integer greater than or equal to 1; the retransmission resource scheduling information of the uplink data transmission.
  • the first information may be carried in a DCI or a downlink channel, and scheduling information of the downlink channel is indicated by the DCI.
  • the DCI may be downlink control information (DCI) carried on the downlink control channel, or may be other DCI messages.
  • DCI downlink control information
  • the terminal identifier set may also be referred to as terminal identification information, and the terminal identifier may be an identifier such as a C-RNTI assigned to the terminal during the RRC connection establishment process or an s-TMSI of the terminal.
  • the retransmission resource scheduling information of the uplink data transmission is used to indicate configuration information of retransmission resources for retransmission by a terminal that has not been successfully transmitted in the first resource corresponding to the downlink control channel. Since the base station does not know which terminals have not been successfully transmitted, the retransmission scheduling information is not directed to the determined terminals, but to terminals that have not successfully transmitted. If the terminal does not detect the terminal identity sent by it in the uplink data transmission in the DCI, it is considered that the transmission is not successful, and therefore the retransmission operation may be performed according to the resource indicated by the retransmission scheduling information.
  • the G first resources include at least one of the following: D1 (D1 is an integer greater than or equal to 1) of the first resources corresponding to a downlink control channel search space; and F1 ( F1 is an integer greater than or equal to 1) the first resource corresponding to the resource identifier.
  • the terminal identifier set corresponding to the uplink data transmission successfully received by the base station and “the resource scheduling information for the retransmission of the uplink data transmission” may be carried in The same first information may be carried in different first information.
  • the terminal identifier set corresponding to the uplink data transmission successfully received by the base station and “the resource scheduling information for the retransmission of the uplink data transmission” are carried in different
  • the DCI carrying "the set of terminal identifiers corresponding to the uplink data transmission successfully received by the base station among the G first resources corresponding to the downlink control channel” and the "retransmission of the uplink data transmission” The CRC scrambling sequence used by the DCI of the "Resource Scheduling Information" is different.
  • the first information further includes configuration information of a downlink control channel search space corresponding to the retransmission of the uplink data transmission.
  • the CRC scrambling information of the DCI message sent in the downlink control channel search space includes one of the following: CRC scrambling information of the DCI message in the downlink control channel search space corresponding to the first transmission of the uplink data transmission; CRC scrambling information configured by the first information.
  • the configuration information of the downlink control channel search space corresponding to the retransmission of the uplink data transmission includes at least one of the following: a time-frequency domain resource size occupied by the downlink control channel search space; and the downlink control channel search space Occupied time-frequency domain resource location.
  • the time-frequency domain resource location occupied by the downlink control channel search space indicates: the start time of the time-frequency domain resource occupied by the search space and the end time of the retransmitted resource of the uplink data transmission Time domain interval.
  • the terminal identifier is carried by uplink data sent by the terminal in the first resource.
  • the first information includes "in the D1 first resources corresponding to the downlink control channel, the terminal identifier set corresponding to the uplink data transmission successfully received by the base station", the first information includes It also includes at least one of the following: scheduling information for downlink data transmission of a terminal matching the terminal identification; C-RNTI information of the terminal matching the terminal identification; and configuration information of a downlink control channel search space of the terminal matching the terminal identification.
  • the role of the C-RNTI information of the terminal that matches the terminal identifier and the configuration information of the downlink control channel search space of the terminal that matches the terminal identifier is to: through these two information, the terminal can obtain a dedicated downlink control channel Search space, where the DCI information carried is scrambled by C-RNTI.
  • the DCI may carry scheduling information related to an uplink channel and a downlink channel of a terminal.
  • the terminal performs subsequent related operations according to the received first information and different conditions.
  • the terminal further includes a first execution unit, where the first execution unit is used when the terminal identifier of the terminal is not included in "G corresponding to the downlink control channel (G is an integer greater than or equal to 1) Of the first resources, the terminal identification set corresponding to the uplink data transmission successfully received by the base station ", the terminal continues to perform uplink data transmission on the next available first resource; or, the terminal A random access signal is sent on the random access channel resource.
  • the terminal continues to perform uplink data transmission on the next available first resource, and the uplink data sent is preferably: (1) uplink data that was not successfully transmitted on the first available first resource; or, ( 2) New uplink data.
  • the uplink data that is continuously transmitted on the next available first resource carries indication information to indicate which of the two types of uplink data (1) and (2) above is specific.
  • Operation 1 Trigger a random access process, let the terminal enter the RRC-CONNECT state, and the terminal will The uplink data that has failed to be transmitted before is sent to the base station;
  • Operation 2 Trigger a random access process, and let the UE send the uplink data that has failed to be transmitted to the base station in Msg3.
  • the UE may implicitly indicate which one of the above two operations the UE selects through the selected random access signal.
  • the "subsequent available random access channel resource" is an available random access channel resource after the time domain resource in which the DCI is located, preferably the first available random access channel resource; or,
  • the "subsequent available random access channel resources” are available random access channel resources after the time domain resources corresponding to the search space where the DCI is located, and preferably the first available random access channel resources.
  • the terminal identifier of the terminal when the terminal identifier of the terminal is not included in "the G (G is an integer greater than or equal to 1) first resources corresponding to the downlink control channel, the terminal identifier corresponding to the uplink data transmission successfully received by the base station In the “set”, preferably, the first information does not include “retransmission resource scheduling information of the uplink data transmission”.
  • the terminal identifier when the terminal identifier is not included in the "G (G is an integer greater than or equal to 1) first resources corresponding to the downlink control channel, the terminal identifier corresponding to the uplink data transmission successfully received by the base station Set ", and no time domain-frequency domain resources of retransmission resources are configured in the" retransmission resource scheduling information for uplink data transmission "or no configuration in the” retransmission resource scheduling information for uplink data transmission "
  • the time-frequency domain resource of the effective retransmission resource is: then the retransmission resource of the uplink data transmission is the next available first resource, where the next one is seen from time The next available first resource; or the retransmission resource for the uplink data transmission is the first resource available after the time domain resource where the DCI is located, wherein the available first resource is preferably Is the first available first resource; or the retransmission resource for uplink data transmission is the first resource available after the time domain resource corresponding to the search space where the DCI is located, where the The first resource with the
  • the "retransmission resource scheduling information for uplink data transmission" contained in the first message carried in the DCI may be set as configurable information. After the UE decodes the DCI, it is displayed or hidden through some of the DCI. Knowing that this information is not configured, it may be considered that no time domain-frequency domain resources of retransmission resources are configured; or, the first message carried in the DCI includes the "retransmission of the uplink data transmission Transmitted resource scheduling information ", but after decoding the DCI, knowing that the retransmitted resources of the uplink data transmission indicated by this information are invalid or unavailable through the value of this information, it can be considered that no effective retransmission resources are configured Time-frequency domain resources.
  • the terminal further includes a second execution unit, where the second execution unit is configured to perform retransmission of the uplink data transmission after the Mth (M is an integer greater than or equal to 1) the terminal, and
  • M is an integer greater than or equal to 1
  • the first information of “the terminal identification set corresponding to the uplink data transmission successfully received by the base station among the G first resources corresponding to the downlink control channel” does not include the terminal identifier, and the terminal executes The following operation: selecting an uplink channel configured in the uplink channel configuration information corresponding to the next first level for uplink data transmission.
  • the value of M can be configured by the base station and sent to the terminal or the standard default configuration.
  • the "next said first level" that is, when the Mth retransmission of the uplink data transmission is performed, the corresponding first level is i (i is an integer greater than or equal to 0), then the next The first level is i + 1.
  • the retransmission resource for the Mth uplink data transmission is indicated in the first information by "resource scheduling information for retransmission of the uplink data transmission”.
  • the terminal further includes a third execution unit, where the third execution unit is configured to perform retransmission of the uplink data transmission after the Qth (Q is an integer greater than or equal to 1) time of the terminal, and correspondingly
  • the first information of “in the G first resources corresponding to the downlink control channel, the terminal identifier set corresponding to the uplink data transmission successfully received by the base station” does not include the identifier of the terminal, and the current uplink
  • the terminal sends a random access signal on subsequent random access channel resources.
  • L is the index of the maximum first level corresponding to the uplink channel configuration information configured by the base station or the first level index configured by the base station.
  • the value of Q is configured by the base station and sent to the terminal or the standard default configuration.
  • the “subsequent available random access channel resources” are available random access channel resources after the time domain resource in which the DCI is located, and the available random access channel resources are preferably The first available random access channel resource; or, the "subsequent available random access channel resources" are among the available random access channel resources after the time domain resources corresponding to the search space where the DCI is located,
  • the available random access channel resources are preferably the first available random access channel resources.
  • the terminal identifier set corresponding to the uplink data transmission successfully received by the base station does not include the terminal identifier, and when the first level corresponding to the current uplink channel configuration information is L, the uplink data transmission may be considered to have failed.
  • the Qth retransmission resource for performing the uplink data transmission may be indicated by the "retransmission resource scheduling information of the uplink data transmission" in the first information.
  • the terminal further includes a fourth execution unit, where the fourth execution unit is configured to perform retransmission of the uplink data transmission when the terminal performs P (P is an integer greater than or equal to 1) times and the retransmission
  • P is an integer greater than or equal to 1
  • F is greater than or equal to 0
  • the terminal operates according to at least one of the following: the uplink data transmission fails, and the terminal performs random access in the subsequent random access. Random access signals are sent on the channel resources; the currently transmitted uplink data transmission fails, and the terminal continues to perform uplink data transmission on the next available first resource.
  • the terminal when the terminal performs the retransmission of the uplink data transmission for the Pth time (P is an integer greater than or equal to 1), and the interval between the position of the retransmitted resource and the start time of the next available first resource is less than F ms (F is greater than or equal to 0), and is not included in the corresponding first information of “the set of terminal identifiers corresponding to the uplink data transmissions successfully received by the base station among the G first resources corresponding to the downlink control channel”
  • the identifier of the terminal may be considered that no new process is available for the terminal.
  • An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores an information processing program, and when the information processing program is executed by a processor, the data transmission method of any one of the foregoing is implemented. step.
  • computer storage medium includes volatile and non-volatile implemented in any method or technology used to store information such as computer-readable instructions, data structures, program modules or other data.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or may Any other medium used to store desired information and which can be accessed by a computer.
  • a communication medium typically contains computer-readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium .

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Abstract

Les modes de réalisation de la présente invention concernent un procédé de transmission de données, une station de base et un terminal. Le procédé comprend les étapes suivantes : une station de base reçoit des premières données de liaison montante transmises par un terminal, les premières données de liaison montante étant soit : des données de liaison montante transmises dans G premières ressources par le terminal, ou des données de retransmission des données de liaison montante transmises dans les G premières ressources par le terminal ; la station de base transmet des premières informations au terminal en fonction des premières données de liaison montante reçues, les premières informations comprenant au moins un élément parmi : des informations d'identification du terminal correspondant aux premières données de liaison montante reçues avec succès par la station de base, et des informations de planification de ressources pour la retransmission des premières données de liaison montante.
PCT/CN2019/100070 2018-08-09 2019-08-09 Procédé de transmission de données, station de base et terminal Ceased WO2020030145A1 (fr)

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