WO2018171756A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2018171756A1
WO2018171756A1 PCT/CN2018/080336 CN2018080336W WO2018171756A1 WO 2018171756 A1 WO2018171756 A1 WO 2018171756A1 CN 2018080336 W CN2018080336 W CN 2018080336W WO 2018171756 A1 WO2018171756 A1 WO 2018171756A1
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WO
WIPO (PCT)
Prior art keywords
random access
parameter set
terminal
base station
access parameter
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Ceased
Application number
PCT/CN2018/080336
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English (en)
French (fr)
Inventor
韩锋
晋英豪
李宏
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP18771166.8A priority Critical patent/EP3598833B1/en
Priority to EP21212432.5A priority patent/EP4057756A1/en
Publication of WO2018171756A1 publication Critical patent/WO2018171756A1/zh
Priority to US16/580,834 priority patent/US11265779B2/en
Anticipated expiration legal-status Critical
Priority to US17/580,369 priority patent/US20220225187A1/en
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a communication method and apparatus.
  • the fifth-generation mobile communication technology (referred to as 5G) supports various types of network deployment and application types, such as support for vehicle networking, emergency communications, industrial Internet and other application scenarios.
  • 5G communication systems are required to provide higher speed experience and greater bandwidth access, provide lower latency and highly reliable information interaction capabilities, and provide larger and lower cost machine type communication (machine type communication) , referred to as MTC) device access and management capabilities.
  • machine type communication machine type communication
  • ultra-reliable and low latency communications URLLC
  • eMBB enhanced mobile broadband
  • URLLC requires user plane delay to be limited to 0.5ms on the uplink and downlink
  • eMBB requires the user plane delay to be limited to 4ms on the uplink and downlink.
  • a new random access method needs to be defined to meet the requirements of the 5G communication system.
  • the embodiment of the present application provides a communication method and device, so as to meet the requirements of the 5G communication system.
  • the first aspect provides a communication method, including: sending, by a base station, a plurality of random access parameter sets to a terminal by using a broadcast message; the base station receiving a random access request of the terminal, where the random access request adopts the multiple One of the random access parameter sets.
  • random access can be initiated differently for different scenarios.
  • the multiple random access parameter sets are multiple random access parameter sets corresponding to multiple random access packets, and one or more random access packets correspond to one random access parameter set.
  • the embodiment may set a corresponding random access parameter set based on the random access packet, and may provide different scenarios (such as service type, network slice) based on the correspondence between the random access packet and the service type, the network slice, and the like.
  • a set of adapted random access parameters are multiple random access parameter sets corresponding to multiple random access packets, and one or more random access packets correspond to one random access parameter set.
  • the plurality of random access parameter sets include a random access parameter set corresponding to a default random access packet.
  • a random access parameter set corresponding to a default random access packet.
  • the random access parameter set further includes a random access preamble sequence; the random access request includes the random access preamble sequence; after the base station receives the random access request sent by the terminal, The method further includes: the base station returns a random access response message to the terminal, where the random access response message includes indication information of an uplink resource allocated to the terminal; and the uplink resource is a random connection of the base station according to the The random access packet is a random access packet corresponding to the random access preamble sequence sent by the terminal.
  • the uplink resource can be allocated to the terminal according to the random access packet corresponding to the terminal, so as to meet the different requirements of the uplink resource in different scenarios (the random access packet can be used to distinguish the scenario).
  • the base station after receiving the random access request sent by the terminal, the base station further includes: the base station returns a random access response to the terminal, where the random access response includes the multiple random access A plurality of random backoff indications corresponding to the group.
  • the embodiment may be configured to send a random backoff indication corresponding to different random access packets to the terminal, so that the terminal performs selection, so as to satisfy random scenarios or random access in different scenarios (random access packets can be used to distinguish scenes). Delay or reliability requirements.
  • a communication method including:
  • the base station Transmitting, by the base station, at least one random access parameter set to the terminal in the connected state or the inactive state by using the dedicated signaling; the base station receiving the random access request of the terminal in the connected state or the inactive state, the random access request And adopting one of the at least one random access parameter set; the random access parameter set includes a monitoring start time and/or a time window length of the random access response time window.
  • the random access may be initiated differently for different scenarios; on the other hand, when the base station sends a random access parameter set If the random access parameter set includes the monitoring start time and/or the time window length of the random access response time window, the random access response time may be provided when the terminal in the connected state or the inactive state performs random access. The monitoring start time and/or time window length of the window.
  • the random access parameter set further includes a random access preamble sequence; the random access request includes the random access preamble sequence; and the base station receives the connected state or the inactive terminal
  • the method further includes: the base station returns a random access response to the terminal, where the random access response includes indication information of an uplink resource allocated to the terminal; and the uplink resource is the base station And allocating according to a scheduling message size threshold corresponding to a random access packet, where the random access packet is a random access packet corresponding to the random access preamble sequence sent by the terminal.
  • the uplink resource can be allocated to the terminal according to the random access packet corresponding to the terminal, so as to meet the different requirements of the uplink resource in different scenarios (the random access packet can be used to distinguish the scenario).
  • the base station after receiving the random access request of the terminal in the connected state or the inactive state, the base station further includes: the base station returns a random access response to the terminal, where the random access response includes A plurality of random backoff indications corresponding to a plurality of random access packets or logical channels or logical channel groups.
  • the embodiment may be configured to send a random backoff indication corresponding to different random access packets or logical channels or logical channel groups to the terminal, so that the terminal performs selection to satisfy different scenarios (random access packets or logical channels or logical channel groups). It can be used to distinguish between random backoff or random access delay or reliability requirements.
  • the at least one random access parameter set is a random access parameter set; or the at least one random access parameter set is a plurality of random access parameter sets corresponding to multiple random access packets, and one Or the plurality of random access groups correspond to one random access parameter set; or the at least one random access parameter set is a random access parameter set corresponding to multiple logical channels or logical channel groups, one or more logical channels or The logical channel group corresponds to a random access parameter set.
  • This embodiment provides various alternatives, such that the random access parameter set can correspond to a random access packet or a logical channel or a logical channel group, and a corresponding solution can be used for different needs, thereby improving system flexibility.
  • the random access parameter set further includes one or any combination of the following parameters: indication information of a random access preamble sequence; indication information of a time-frequency resource occupied by the random access preamble sequence; a contention resolution timer The length of the time period; the maximum number of random accesses; the size of the scheduling message size.
  • a communication method including:
  • the terminal uses one of the multiple random access parameter sets to send a random access request to the base station.
  • the multiple random access parameter sets are multiple random access parameter sets corresponding to multiple random access packets, and one or more random access packets correspond to one random access parameter set.
  • the plurality of random access parameter sets include a random access parameter set corresponding to a default random access packet.
  • the method further includes: receiving, by the terminal, a random access response returned by the base station, where the random access response includes multiple random access packets corresponding to a plurality of random backoff indications, the terminal determining a corresponding random access packet according to the random access event, and selecting corresponding ones from the plurality of random backoff indications corresponding to the plurality of random access packets according to the determined random access packet Random backoff indication.
  • a communication method including:
  • the terminal in the connected state or the inactive state receives at least one random access parameter set sent by the base station through the dedicated signaling;
  • the terminal in the connected state or the inactive state sends a random access request to the base station by using one of the at least one random access parameter set; the random access parameter set includes a random access response time window. Monitor start time and/or time window length.
  • the random access parameter set further includes a random access preamble sequence; the random access request includes the random access preamble sequence; and the connected state or the inactive state terminal adopts the at least one And sending, by the one of the random access parameter sets, a random access request to the base station, where the terminal in the connected state or the inactive state uses a logical channel or a logical channel group according to uplink data and/or signaling to be sent. Determining a corresponding random access parameter set; the connected or inactive terminal transmitting, according to the determined random access parameter set, the random access preamble sequence in the random access parameter set to the base station.
  • the method further includes: receiving, by the terminal, a random access response returned by the base station, where the random access response includes multiple random access packets or logic a plurality of random backoff indications corresponding to the channel or the logical channel group; the terminal determining a corresponding random access packet or a logical channel or a logical channel group according to the random access event, according to the determined random access packet or logical channel or logical channel The group selects a corresponding random backoff indication from the plurality of random backoff indications.
  • the at least one random access parameter set is a random access parameter set; or the at least one random access parameter set is a plurality of random access parameter sets corresponding to multiple random access packets, and one Or a plurality of random access packets corresponding to a random access parameter set, where the plurality of random access packets correspond to a public land mobile network PLMN accessed by the connected state or the inactive terminal; or A random access parameter set is a random access parameter set corresponding to multiple logical channels or logical channel groups, and one or more logical channels or logical channel groups correspond to a random access parameter set.
  • the random access parameter set further includes one or any combination of the following parameters:
  • a base station including:
  • a sending module configured to send, by using a broadcast message, multiple random access parameter sets to the terminal;
  • a receiving module configured to receive a random access request of the terminal, where the random access request adopts one of the multiple random access parameter sets.
  • the multiple random access parameter sets are multiple random access parameter sets corresponding to multiple random access packets, and one or more random access packets correspond to one random access parameter set.
  • the plurality of random access parameter sets include a random access parameter set corresponding to a default random access packet.
  • the random access parameter set further includes a random access preamble sequence; the random access request includes the random access preamble sequence; and the sending module is further configured to: receive, at the receiving module After the random access request sent by the terminal, the random access response message is returned to the terminal, where the random access response message includes indication information of an uplink resource allocated to the terminal; the uplink resource is the base station And allocating according to a scheduling message size threshold corresponding to a random access packet, where the random access packet is a random access packet corresponding to the random access preamble sequence sent by the terminal.
  • the sending module is further configured to: after the receiving module receives the random access request sent by the terminal, return a random access response to the terminal, where the random access response includes the multiple Multiple random backoff indications corresponding to random access packets.
  • a base station including:
  • a sending module configured to send, by using dedicated signaling, at least one random access parameter set to a terminal in a connected state or an inactive state;
  • a receiving module configured to receive a random access request of the terminal in the connected state or the inactive state, where the random access request adopts one of the at least one random access parameter set; in the random access parameter set
  • the monitoring start time and/or the time window length of the random access response time window are included.
  • the random access parameter set further includes a random access preamble sequence; the random access request includes the random access preamble sequence; and the sending module is further configured to: receive, at the receiving module After the random access request of the terminal in the connected state or the inactive state, the random access response is returned to the terminal, where the random access response includes indication information of the uplink resource allocated to the terminal; the uplink resource The base station is allocated according to a scheduling message size threshold corresponding to a random access packet, where the random access packet is a random access packet corresponding to the random access preamble sequence sent by the terminal.
  • the sending module is further configured to: after the receiving module receives the random access request of the terminal in the connected state or the inactive state, return a random access response to the terminal, where the random access The response includes a plurality of random backoff indications corresponding to the plurality of random access packets or logical channels or logical channel groups.
  • the at least one random access parameter set is a random access parameter set; or the at least one random access parameter set is a plurality of random access parameter sets corresponding to multiple random access packets, and one Or the plurality of random access groups correspond to one random access parameter set; or the at least one random access parameter set is a random access parameter set corresponding to multiple logical channels or logical channel groups, one or more logical channels or The logical channel group corresponds to a random access parameter set.
  • the random access parameter set further includes one or any combination of the following parameters:
  • a terminal including:
  • a receiving module configured to receive, by the base station, a plurality of random access parameter sets sent by using a broadcast message
  • a sending module configured to send a random access request to the base station by using one of the multiple random access parameter sets.
  • the multiple random access parameter sets are multiple random access parameter sets corresponding to multiple random access packets, and one or more random access packets correspond to one random access parameter set.
  • the plurality of random access parameter sets include a random access parameter set corresponding to a default random access packet.
  • the method further includes: a determining module, where the receiving module is further configured to: after the sending module sends a random access request to the base station, receive a random access response returned by the base station, and the random access response Include a plurality of random backoff indications corresponding to the plurality of random access packets; the determining module, configured to determine, according to the random access event, a corresponding random access packet, according to the determined random access packet, from the multiple random A corresponding random backoff indication is selected from the plurality of random backoff indications corresponding to the access group.
  • a terminal including:
  • a sending module configured to receive, by the base station, at least one random access parameter set sent by the base station by using dedicated signaling when the terminal is in a connected state or an inactive state;
  • a sending module configured to send, by using one of the at least one random access parameter set, a random access request to the base station when the terminal is in a connected state or an inactive state; in the random access parameter set
  • the monitoring start time and/or the time window length of the random access response time window are included.
  • the method further includes: a determining module; the random access parameter set further includes a random access preamble sequence; the random access request includes the random access preamble sequence; and the determining module is configured to: according to the to-be-sent The logical channel or the logical channel group used by the uplink data and/or the signaling determines a corresponding random access parameter set; the sending module is specifically configured to send the random to the base station according to the determined random access parameter set A random access preamble sequence in the access parameter set.
  • the method further includes: a determining module, where the receiving module is further configured to: after the sending module sends a random access request to the base station, receive a random access response returned by the base station, and the random access response a plurality of random backoff indications corresponding to the plurality of random access packets or the logical channel or the logical channel group, where the determining module is configured to determine a corresponding random access packet or a logical channel or a logical channel group according to the random access event, And selecting a corresponding random backoff indication from the plurality of random backoff indications according to the determined random access packet or logical channel or logical channel group.
  • a determining module where the receiving module is further configured to: after the sending module sends a random access request to the base station, receive a random access response returned by the base station, and the random access response a plurality of random backoff indications corresponding to the plurality of random access packets or the logical channel or the logical channel group, where the determining module is configured to determine a corresponding
  • the at least one random access parameter set is a random access parameter set; or the at least one random access parameter set is a plurality of random access parameter sets corresponding to multiple random access packets, and one Or a plurality of random access packets corresponding to a random access parameter set, where the plurality of random access packets correspond to a public land mobile network PLMN accessed by the connected state or the inactive terminal; or A random access parameter set is a random access parameter set corresponding to multiple logical channels or logical channel groups, and one or more logical channels or logical channel groups correspond to a random access parameter set.
  • the random access parameter set further includes one or any combination of the following parameters:
  • a tenth aspect provides a communication method, including: sending, by a base station, a plurality of random access parameter sets to a terminal in a connected state or an inactive state by using dedicated signaling; and receiving, by the base station, the terminal in the connected state or the inactive state a random access request, the random access request adopting one of the plurality of random access parameter sets.
  • a communication method including: a terminal in a connected state or an inactive state receiving a plurality of random access parameter sets sent by a base station by using dedicated signaling; and the terminal adopting the connected state or the inactive state Determining one of a plurality of random access parameter sets, and transmitting a random access request to the base station.
  • the method further includes: sending, by the base station, configuration information of a random access packet to the terminal, where The random access packet is configured by the core network device.
  • a random access packet corresponds to at least one of a public land mobile network PLMN, a service type, a network slice, an application type, and an access type.
  • the configuration information of the random access packet includes at least one of a PLMN indication, a service type indication, a network slice indication, an application type indication, and an access type indication.
  • the random access parameter set includes one or any combination of the following parameters:
  • the monitoring start time and/or the time window length of the random access response time window are the monitoring start time and/or the time window length of the random access response time window
  • the random access parameter set further includes a random backoff indication.
  • a base station comprising: a memory and a processor for storing program code to be executed by the processor.
  • the communication interface is used to communicate with the terminal.
  • the processor is configured to execute the program code stored in the memory, specifically for performing the method of any one of the first aspect, the second aspect, and the tenth aspect.
  • a terminal comprising: a memory and a processor for storing program code to be executed by the processor.
  • the communication interface is used to communicate with the base station.
  • the processor is configured to execute the program code stored in the memory, and is specifically for performing the method of any one of the third aspect, the fourth aspect, and the twelfth aspect.
  • a fourteenth aspect a computer readable storage medium for storing computer software instructions for performing the functions designed for any of the first aspect or the second aspect above, comprising A program designed by the method of any one of the second aspect or the tenth aspect.
  • a fifteenth aspect a computer readable storage medium for storing computer software instructions for performing the functions of any of the above third aspect or the fourth aspect or the eleventh aspect, including A program designed to perform the method of any one of the above third aspect or the fourth aspect.
  • the base station may send multiple random access parameter sets to the terminal, and when performing random access, the terminal may perform random access according to one of the multiple random access parameter sets, which may be different.
  • the scenario is a random access process that differentiates.
  • FIG. 1 exemplarily shows a schematic diagram of a 5G network architecture
  • FIG. 2 exemplarily shows a schematic diagram of a registration area update process in the embodiment of the present application
  • FIG. 3 is a schematic diagram showing a random access procedure provided by an embodiment of the present application.
  • FIG. 4 exemplarily shows an implementation process of S302 in FIG. 3;
  • FIG. 5 is a schematic structural diagram of a Media Access Control-Control Element (MAC CE) provided by an embodiment of the present application;
  • MAC CE Media Access Control-Control Element
  • FIG. 6 is a schematic diagram showing a random access procedure provided by another embodiment of the present application.
  • FIG. 7 and FIG. 8 are respectively a schematic structural diagrams of a base station provided by an embodiment of the present application.
  • FIG. 9 and FIG. 10 are respectively a schematic structural diagrams of a terminal provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a base station provided by another embodiment of the present application.
  • FIG. 12 exemplarily shows a schematic structural diagram of a terminal provided by another embodiment of the present application.
  • FIG. 1 exemplarily shows a schematic diagram of a 5G network architecture.
  • the network architecture may include a base station and a core network device, and a terminal.
  • the core network device is a 5G core network device
  • the base station is a new radio base station (New Radio base station) or an evolved long term evolution (LTE) base station (ie, an eLTE base station).
  • the terminal can communicate with the core network device via the base station.
  • the terminal can be a mobile phone (or “cellular” phone), a computer with a mobile terminal, etc., for example, the terminal can also be a portable, pocket, handheld, computer.
  • Built-in or in-vehicle mobile devices that exchange voice and/or data with the wireless access network.
  • the terminal in the embodiment of the present application may also be a D2D (device to device) terminal or an M2M (machine to machine) terminal.
  • Network slicing is a key technology for 5G systems.
  • a network slice includes all the resources that meet the business needs. Specifically, it includes: core network control and user plane network functions and resources (eg, computing, storage, network resources, etc.), and air interface access networks.
  • a terminal can simultaneously support and access multiple network slices.
  • the terminal When the terminal initially accesses the network or performs a tracking area update (TAU), the terminal provides network slice selection assistance information (NSSAI) for the network to select a radio access network (Radio Access Network, referred to as A slice instance of the RAN) portion and a slice instance of the core network portion.
  • NSSAI network slice selection assistance information
  • the NSSAI is composed of one or a set of S-NSSAI (single management-network slice selection assistance information), and an S-NSSAI can be used to select a specific network slice.
  • Each S-NSSAI may include the following: slice/service type (SST), which points to a slice-specific feature and service type, and optionally, a slice differentiator (SD). .
  • SST slice/service type
  • SD slice differentiator
  • SST can further distinguish between multiple network slice instances that satisfy the same SST.
  • a 5G communication system there are three states of the terminal: an idle state, a connected state, and an inactive state. There is no radio resource control (RRC) connection between the terminal in the idle state and the base station.
  • RRC radio resource control
  • the RRC connection exists between the terminal in the connected state and the active state and the base station, and the RRC connection between the active terminal and the base station is suspended.
  • All the random access times in the existing LTE system are based on a set of random access parameters, which cannot meet the different requirements of multiple service types, multiple network slices, and multiple access types in the 5G system.
  • the present application provides a service type, network slicing, and access requirements for the random access process under the new generation of air interfaces.
  • the random access scheme based on the random access packet such as the signaling level, enables the network side to randomly allocate air interface resources based on different random access packets in the random access process of the terminal, thereby improving the user experience and satisfying the new air interface.
  • the new transmission characteristics ensure the flexibility and reliability of the system in the random access scheme.
  • Random access packets can be divided based on the type of service, slice type, connection type, and so on.
  • the embodiment of the present application defines a random access parameter set for each random access packet.
  • the communication method provided by the embodiment of the present application may be related to a random access parameter configuration step and a random access request initiation step, which may be implemented based on the network architecture shown in FIG. 1. Of course, it can also be implemented based on an evolved network architecture.
  • Solution 1 The base station sends multiple random access parameter sets to the terminal by using a broadcast message.
  • the "plurality" means two or more.
  • the terminal may send a random access request to the base station by using one of the multiple random access parameter sets to perform a random access procedure with the base station.
  • One or more random access packets correspond to a set of random access parameters.
  • the plurality of random access parameter sets include a random access parameter set corresponding to the default random access packet.
  • the scheme can be applied to a terminal in an idle state, a terminal in a connected state, or a terminal in an inactive state.
  • the terminal in the idle state, the connected state, and the inactive state may receive multiple random access parameter sets sent by the base station through the broadcast message, and the terminals in the idle state, the connected state, and the inactive state may all need to perform random access. And performing a random access procedure by using one of the multiple random access parameter sets.
  • Solution 2 The base station sends at least one random access parameter set to the connected or inactive terminal by using dedicated signaling.
  • the multiple random access parameter sets may correspond to multiple random access groups, where one or more The random access packet corresponds to a random access parameter set; the multiple random access parameter sets may also correspond to multiple logical channels or logical channel groups, and one logical channel or logical channel group corresponds to one random access parameter set, or A plurality of logical channels or logical channel groups correspond to a random access parameter set.
  • This scheme can be applied to both connected and inactive terminals.
  • the terminal in the connected state or the inactive state may use the random access parameter set to initiate a random access procedure;
  • the terminal in the connected state or the inactive state may be based on one of the plurality of random access parameter sets. Initiate a random access procedure.
  • the base station may send multiple random access parameter sets to the terminal by using a broadcast message, and may also send at least one random access parameter set to the connected or inactive terminal by dedicated signaling.
  • the random access parameter set sent by the base station by using the broadcast message is used by the terminal in the idle state to initiate random access
  • the random access parameter set sent by the base station by using the dedicated signaling is used for the terminal in the connected state or the inactive state to initiate random access.
  • the random access packet may be based on a Public Land Mobile Network (PLMN) requested by the terminal, the requested service type, the network slice used, and the access type used. And other factors are divided.
  • PLMN Public Land Mobile Network
  • the service type may include: a short messaging service (SMS), an IP multimedia subsystem (IMS) voice service, an IMS video service, and the like.
  • the access type may include: emergency service access, high priority access, mobile terminated access, non-access stratum signaling, access layer signaling, and the like.
  • a random access packet may correspond to at least one of a PLMN, a service type, a network slice, an application type, and an access type.
  • the configuration information of a random access packet includes at least one of a PLMN identity, a service type identifier, a network slice identifier, an application type identifier, and an access type identifier.
  • the network slice identifier may be S-NSSAI (including SST and SD). Table 1 exemplarily shows an example of configuration information of a random access packet.
  • Table 1 shows configuration information of random access packet 0, random access packet 1, random access packet 2, and random access packet 3.
  • the configuration information of each random access packet may include a PLMN identity, a network slice identifier, an application type identifier, a service type identifier, and the like. Among them, "*" is a wildcard, indicating an arbitrary match.
  • the PLMN identifier is represented as *, indicating that it may be any PLMN network.
  • the configuration information of the default random access packet the PLMN identifier, the network slice identifier, the service type identifier, and the like may be represented by a wildcard.
  • the default random access packet has the lowest priority, and the default random access packet is selected when the terminal cannot match the random access packet except the default random access packet according to the random access event.
  • Table 1 it defines a unified random access packet format that can be used to define various possible application scenarios. At least one or more combinations of the PLMN identity, the service type identifier, the network slice identifier, the application type identifier, and the access type identifier may distinguish different random access packets.
  • the random access packet may be configured by the core network device and sent to the base station, and the base station may send the configuration information of the random access packet to the terminal.
  • the configuration information of the random access packet may be in the process of performing the access network (ie, the network registration process), or the service request process, or the protocol data unit (PDU) session establishment process. Or during the registration process, the core network device sends the terminal to the terminal via the base station.
  • FIG. 2 exemplarily shows a registration area update procedure of a terminal in which the base station transmits configuration information of a random access packet to the terminal.
  • the process can include the following steps:
  • S201-S202 The terminal sends a registration area update request message to the base station, and the base station sends a registration area update request to the core network device.
  • the core network device sends a registration area update response message to the base station, where the response message includes configuration information of the random access packet.
  • S204 The base station sends a registration area update response message to the terminal, where the response message includes configuration information of the random access packet.
  • S205 ⁇ S206 The terminal sends a registration area update complete message to the base station, and the base station sends a registration area update complete message to the core network device.
  • a random access parameter set may include one or any combination of the following parameters:
  • the random access preamble sequence is also referred to as a pPhysical random access channel (PRACH) sequence.
  • the indication information of a random access preamble sequence may be an index of a random access preamble sequence, or may be a displacement of a random access preamble sequence corresponding to a random access preamble root sequence.
  • the indication information of the random access preamble sequence in different random access parameter sets is different, such that different random access packets correspond to different random access preamble sequences, and when multiple terminals initiate random access, Since the multiple terminals may correspond to different random access packets, Msg1 (ie, the first message in the random access procedure) may be sent using different random access preamble sequences, thereby alleviating or even eliminating by a certain random
  • Msg1 ie, the first message in the random access procedure
  • the impact of the Msg1 storm caused by the access event on other random access events can also distinguish the service type, network switch, application type, etc. in the random access phase (especially the initial random access phase). Whether the terminal initiates a URLLC service or an eMBB service, thereby providing a basis for processing operations on the network side.
  • each cell may have 64 available random access preamble sequences. These sequences are divided into two parts, one for contention for random access and the other for non-contention based random access.
  • the contention-based random access preamble sequence can be further divided into group A and group B.
  • the indication information of the time-frequency resource occupied by the random access preamble sequence is used to indicate the time-frequency resource occupied by the random access preamble sequence.
  • the time-frequency resource indication information of the random access preamble sequence in different random access parameter sets is different, such that different random access packets correspond to different random access preamble time-frequency resources, when multiple terminals initiate During random access, since the multiple terminals may correspond to different random access packets, the Msg1 message may be sent using different random access preamble time-frequency resources, thereby alleviating or even eliminating the triggering by a random access event. The impact of the Msg1 storm on other random access events.
  • the random access response time window is used by the terminal to listen to the random access response message sent by the base station (ie, Msg2 in the random access procedure). After the terminal sends the random access preamble sequence (through Msg1) to the base station, the random access response time window may be opened, and the random access response message returned by the base station is monitored in the time window.
  • the random access response time window may start after the terminal sends a subframe after the subframe of the random access preamble sequence (represented as a subframe for transmitting a random access preamble sequence + a monitoring start time of the time window), And continuing the time window length of the time window, the time window length may be a number of subframes, represented by the ra-RsponseWindowSize parameter of the time window.
  • one or more random access packets may correspond to a random access parameter set
  • the random access packets may be divided according to service type, network slice, etc., and thus may be characterized according to different service types and/or different network slices.
  • set different random access response time window parameters For example, a short monitoring start time and a time window length are set for a URLLC type service, so that a terminal performing this type of service can access the network faster.
  • Table 2 exemplarily shows the monitoring start time and/or the time window length of the random access response time window in the random access parameter set corresponding to different random access packets.
  • Table 2 Random access response time window parameters in a random access parameter set corresponding to different random access packets
  • the service type corresponding to the random access packet 0 is URLLC
  • the service type corresponding to the random access packet 1 is eMBB. Since the request for the delay of the URLLC service is higher than that of the eMBB service, the random access packet 0 corresponds to the random The monitoring start time of the random access response time window in the access parameter set is short.
  • the length of the time period of the contention timer which may be in units of ms or a transmission time interval (TTI).
  • the contention resolution timer is used by the terminal to listen to the contention resolution message returned by the base station (ie, Msg4 in the random access procedure) during the timing of the timer. After the terminal sends the Msg3 to the base station, the terminal can start the timer and listen to the contention resolution message returned by the base station during the timer time of the timer.
  • the timing length of different contention resolution timers may be set for different random access packets. For example, for a random access packet corresponding to a URLLC type service, a shorter length of time can be set to meet the delay requirement of the type of service.
  • the maximum number of random accesses If the random access procedure of the terminal fails, the random access procedure may be re-initiated without reaching the maximum number of random accesses.
  • different random access maximum times may be set for different random access groups. For example, for a random access packet corresponding to the URLLC type service, a maximum random access maximum number may be set to meet the type of service. Reliability requirements.
  • Msg3 size threshold Different random access packets may correspond to different scheduling message (Msg3) size thresholds.
  • a random access parameter set may further include a random backoff indication, which is used to indicate a random backoff time length.
  • the random access preamble sequence may be randomly selected in the corresponding time interval according to the random backoff time length indicated by the random backoff indication.
  • the value of the random backoff indication corresponding to the different random access packets may be different. For example, for the random access packet corresponding to the service type with high delay requirement, the random backoff time set for the short access time is short. In order to initiate the random access procedure again as soon as the random access fails.
  • a random access parameter set may further include an Msg3 threshold for indicating a random access preamble sequence group (group A and group B) used when selecting Msg1.
  • the value of the Msg3 threshold corresponding to the different random access packets may be different. For example, for a random access packet corresponding to the eMBB service type of high throughput requirement, the Msg3 threshold set for the base station is large, so that the base station is configured. When an uplink resource corresponding to Msg3 is allocated, a larger uplink resource is allocated.
  • random access parameter set may further include the number of random access preamble sequences and the packet information of the random access preamble sequence (the contention-based random access preamble sequence may be divided into group A and group B).
  • the packet information of the random access preamble sequence may be indication information of the packet A or indication information of the packet B.
  • the random access parameters included in the random access parameter set can be organized using a variety of data structures. As an example, a random access parameter included in a random access parameter set can be divided into three parameter subsets:
  • Parameter subset 1 may also be referred to as a random access channel common configuration (RACH-Config Common) subset.
  • the RACH-Config Common may include one or more of the following parameters: the number of random access preamble sequences, the random access preamble sequence group information, and the size threshold of the scheduling message (Msg3). The above is only an example list, and other parameters may be included in the RACH-Config Common.
  • Parameter subset 2 may also be referred to as a PRACH system configuration (PRACH-ConfigSIB) subset.
  • the PRACH-ConfigSIB may include one or more of the following parameters: a random access preamble sequence, and a PRACH time-frequency resource information.
  • the PRACH time-frequency resource information is used to indicate the time-frequency resource occupied by the random access preamble sequence. The above is only an exemplary list, and other parameters may be included in the PRACH-ConfigSIB.
  • Parameter subset 3 Also known as timer and time window subsets.
  • the subset may include one or more of the following parameters: random access response window length (ra-RsponseWindowSize), random backoff indicator (Backoff indicator), and contention resolution timer (mac-ContentionResolutionTimer) timing time length.
  • ra-RsponseWindowSize random access response window length
  • Backoff indicator random backoff indicator
  • mac-ContentionResolutionTimer contention resolution timer timing time length
  • Table 3 exemplarily shows, in a list manner, three sets of random access parameters transmitted by a base station through a broadcast message.
  • Table 3 Multiple random access parameter sets sent by the base station through broadcast messages
  • Table 3 shows three random access parameter sets corresponding to random access packet 0, random access packet 1 and random access packet 2, each random access parameter set including a subset of RACH-Config Common parameters, PRACH- A subset of the ConfigSIB parameters, as well as a subset of timer and time window parameters.
  • the parameters included in different random access parameter sets may have the following conditions: the parameter values of some parameters are the same, or the parameter values of all parameters are the same, or the parameter values of all parameters are different.
  • different sets of random access parameters have multiple manifestations, and several possible scenarios are listed below:
  • Case 1 For different sets of random access parameters, the random access preamble sequences included are different and belong to different random access preamble sequence packets, but the random access preamble sequences occupy the same time-frequency resources, and different random accesses
  • the Msg3 size thresholds in the parameter set are also different.
  • the random access preamble sequences included are the same and belong to the same random access preamble sequence group, but the time-frequency resources occupied by the random access preamble sequence are different, and different random access parameters
  • the Msg3 size thresholds in the set are the same.
  • the random access preamble sequences included are different and belong to different random access preamble sequence packets, and the time-frequency resources occupied by the random access preamble sequence are also different, different random
  • the Msg3 size threshold in the access parameter set is also different.
  • a set of random access parameters corresponding to a logical channel or a group of logical channels which includes a parameter type similar to the previous embodiment.
  • the parameter values in the random access parameter set corresponding to different logical channels or logical channel groups may be the same or different.
  • different values may be set for the parameters in the random access parameter set corresponding to the logical channel or logical channel group of different priorities. Taking logical channel 1 and logical channel 2 as an example, the random parameter set corresponding to logical channel 1 is set A, the random access parameter set corresponding to logical channel 2 is set B, and the priority of logical channel 1 is higher than that of logical channel 2.
  • the random access parameters in set A and set B may include one or a combination of the following features:
  • the time-frequency resources occupied by the random access preamble sequence and/or the random access preamble sequence are different, so that the base station can be based on the received random access preamble sequence and/or the time frequency occupied by the sequence.
  • the resource determines a corresponding logical channel or logical channel group, thereby providing a basis for subsequent operations;
  • the monitoring start time and/or the time window length of the random access response time window are different, and the monitoring start time and duration of the random access response time window in the set A are short, which can ensure high use.
  • the data of the priority logical channel or logical channel group can be transmitted as soon as possible.
  • the maximum number of random accesses is different, and the maximum number of random accesses in the set A is large, so that the success rate of access can be guaranteed for the high-priority logical channel or logical channel group.
  • the time length of the contention resolution timer is different, and the time length of the contention resolution timer in the set A is long, so that the high priority logical channel or logical channel group can be guaranteed as much as possible.
  • the values of the random backoff indications corresponding to different logical channels or logical channel groups are different.
  • a random backoff time corresponding to a logical channel or a logical channel group with a high priority is short (the smaller the value is, the random backoff may be performed first), so that the high priority logical channel or the logical channel group can be randomly performed as soon as possible. Access.
  • the above random access parameter set in the embodiment of the present application may be sent by the base station to the terminal, so that the terminal is used in random access.
  • the random access parameter configuration process and the random access procedure provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
  • FIG. 3 exemplarily shows a communication flow provided by an embodiment of the present application.
  • the flow shown in FIG. 3 can be applied to the scenario described in the foregoing scheme 1.
  • the procedure is also applicable to the scenario in which the terminal in the idle state in the scenario described in the third scenario initiates a random access procedure by using one of the multiple random access parameter sets sent by the base station through the broadcast message.
  • the process can include:
  • the base station sends multiple random access parameter sets to the terminal by using a broadcast message.
  • the terminal can receive the multiple random access parameter sets regardless of whether it is in an idle state, a connected state, or an inactive state. After receiving the multiple random access parameter sets sent by the base station, the terminal may save the set in the terminal.
  • the plurality of random access parameter sets sent by the base station may be a random access parameter set corresponding to multiple random access packets, and one or more random access packets may correspond to one random access parameter set.
  • the multiple random access parameter sets include a random access parameter set corresponding to the default random access packet.
  • S302 The terminal uses one of the multiple random access parameter sets to send a random access request to the base station to trigger a random access procedure.
  • the terminal may initiate a random access procedure according to one of the multiple random access parameter sets, whether in the idle state, the connected state, or the inactive state. For example, when the terminal is in an idle state, if uplink data and/or signaling needs to be sent, a random access procedure may be initiated by using one of the multiple random access parameter sets. For example, when the terminal is in the connected state, if uplink data and/or signaling needs to be sent, but the uplink is out of synchronization, the random access parameter set of the multiple random access parameter sets may be used to initiate random access. process.
  • the random access process may be triggered for other reasons. For example, when the terminal in the connected state is switched or the terminal is located, it is no longer one by one. List.
  • the terminal sends a random access request and the random access procedure triggered by the random access request includes a signaling interaction process between the terminal and the base station.
  • FIG. 4 exemplarily shows an implementation process of S302 in FIG. As shown in FIG. 4, the process may include:
  • S401 The terminal selects one random access parameter set from the multiple random access parameter sets sent by the base station according to the random access event that triggers the random access procedure.
  • the random access event may trigger a random access procedure.
  • Random access events may include multiple types to describe different random access trigger causes, scenarios, and the like.
  • random access events can include:
  • the random access event may be further refined, so that the terminal selects a corresponding random access parameter set according to a more refined scenario or reason.
  • a further refined random access event can be described as:
  • the random access event can be further divided from the perspective of service type, network slice, PLMN, application type, and access type.
  • the division angle is similar to the division angle of the random access packet.
  • the random access event can be further divided from the perspective of service type, network slice, PLMN, application type, and access type.
  • the division angle is similar to the division angle of the random access packet.
  • S402 The terminal sends a random access preamble sequence to the base station (Msg1 in the figure). This step corresponds to S302 in FIG.
  • the random access preamble sequence transmitted in S402 can be understood as a special case or an example of the random access request transmitted in S302.
  • the terminal may send the corresponding random access preamble sequence according to the indication information of the random access preamble sequence. If the random access parameter set selected by the terminal includes the time-frequency resource indication information of the random access preamble sequence, the terminal may send the random access preamble sequence by using the corresponding time-frequency resource.
  • the terminal may send the random access preamble sequence within the corresponding time period ( That is, in the random access response time window, a physical downlink control channel (PDCCH) is monitored to receive a random access response message sent by the base station.
  • a physical downlink control channel PDCCH
  • the base station After receiving the random access preamble sequence (Msg1) sent by the terminal, the base station allocates an uplink resource to the terminal, and returns a random access response message (such as Msg2 in the figure) to the terminal, where the indication of the uplink resource allocated for the terminal is carried.
  • a random access response message such as Msg2 in the figure
  • the base station may determine, according to the received random access preamble sequence and/or the time-frequency resource occupied by the random access preamble sequence, the corresponding random access packet, and the base station may according to the determined random access packet.
  • the size threshold of the corresponding scheduling message (Msg3) allocates an uplink resource of a corresponding size to the terminal, so that the uplink resource allocated to the terminal can transmit Msg3 whose size does not exceed the size threshold.
  • One or more random access packets may correspond to a size threshold of Msg3.
  • the size thresholds of the Msg3 corresponding to different random access packets may be different to meet the requirements of the Msg3 message in different situations.
  • a corresponding random access packet set is set for different access types (inactive state terminal access, initial access, etc.), wherein the random access packet corresponding to the inactive terminal access type corresponds to
  • the size threshold of Msg3 is large to meet the requirement that the inactive terminal needs to carry the Resume ID and even carry data in Msg3; for the random access packet corresponding to the initial access type, the corresponding Msg3 size threshold It is smaller to accommodate the requirement that the initial random access terminal carries the S-TMSI or the random number in the Msg3 message.
  • the base station determines that the access type of the terminal is inactive terminal access, it can allocate a larger uplink resource. If the base station determines that the access type of the terminal is initial access, it can allocate it. Small upstream transmission resources.
  • the base station may determine the corresponding random access packet according to the received Msg1.
  • the contention timer can be started, and the PDCCH is monitored during the timeout period of the contention resolution timer to receive the contention resolution message (Msg4) returned by the base station. Further, if the terminal performs a hybrid automatic repeat request (HARQ) for Msg3, the timer is reset.
  • HARQ hybrid automatic repeat request
  • S405 After receiving the scheduling message (Msg3) sent by the terminal, the base station returns a contention resolution message to the terminal (Msg4 in the figure). If Msg4 indicates that the conflict resolution is successful, the terminal confirms that the random access procedure is successful.
  • the base station may include a random backoff indication in the random access response message returned to the terminal. If the base station can determine the corresponding random access packet according to the received random access preamble sequence and/or the time-frequency resource occupied by the random access preamble sequence, the random backoff indication corresponding to the random access packet may be carried in the random Access response message. If the base station cannot determine the corresponding random access packet according to the received random access preamble sequence and/or the time-frequency resource occupied by the random access preamble sequence, the random backoff indication corresponding to each random access packet may be carried in Random access response message. Optionally, one or more random access packets correspond to a random backoff indication.
  • a new MAC CE format in Msg2 is defined to carry multiple random backoff indications corresponding to multiple random access packets.
  • FIG. 5 exemplarily shows a MAC CE carrying a random backoff indication corresponding to 5 random access packets.
  • BI-0 to BI-4 in the MAC CE are random backoff indications corresponding to random access packet 0 to random access packet 4, respectively.
  • each random backoff indication occupies the same number of bits.
  • the correspondence between the random backoff indication and the random access packet included in the MAC CE may be agreed. For example, if five random access packets are used as an example, the random backoff indications included in the MAC CE are sequentially and in accordance with the agreed order. The random access packet corresponds. A correspondence is shown in Figure 5.
  • the MAC CE in Msg2 carries a random backoff indication.
  • the random backoff indication (random backoff time) corresponding to each random access packet may be calculated according to the following method: the random backoff indication included in the MAC CE is used as a reference value, and the random access time corresponding to the random access packet is multiplied. The coefficient obtains a random backoff time corresponding to the random access packet.
  • the value range of the random access time coefficient may be set to (0, 1), that is, greater than 0 and less than 1.
  • the random access response message sent by the base station may not include the random backoff indication.
  • the terminal may obtain the random access packet from the multiple random access packets according to the determined random access packet in S401.
  • Corresponding random backoff indication or random backoff time coefficient is selected in the corresponding random backoff indication, and is used to perform a random backoff procedure.
  • the terminal may determine whether the maximum random access number has been reached. If not, the terminal may start the random backoff timer according to the random backoff indication. The random backoff process is performed, that is, the random access procedure is re-initiated when the random backoff timer expires, and the initiated random access procedure may be as S402 to S405 in the foregoing process. If the maximum number of random accesses has been reached, the high-level access problem may be further notified to the upper layer, where the upper layer may be wireless (such as the RRC layer).
  • the terminal may determine whether the maximum random access number has been reached according to the maximum random access number. Otherwise, according to the default The maximum number of random accesses determines whether the maximum number of random accesses has been reached. This default maximum number of random accesses applies to all random access packets.
  • the terminal if the base station sends the Msg2, the terminal does not receive the Msg3 returned by the base station in the random access response time window, or receives the Msg3 but the Msg3 does not include the random access preamble sequence sent by the terminal in S402. The terminal considers that the random access procedure has failed.
  • the terminal may initiate the random access procedure again if the maximum number of random accesses is not reached; in another solution, if the Msg2 includes a random backoff indication or the terminal may If the random backoff indication is determined according to the received Msg2, if the random backoff maximum number is not reached, the random backoff timer may be started according to the random backoff indication, and the random backoff timer has a timing length of 0 to the random backoff indication. A random time within the indicated length of time, and when the random backoff timer expires, the random access procedure is initiated again.
  • the random access procedure initiated again may be as S402 to S405 in the foregoing process.
  • the terminal can select a corresponding random access based on the random access packet corresponding to the random access parameter set corresponding to the multiple random access packets.
  • the parameter set is randomly accessed. Since the random access packet can be divided according to the service type, the network slice, and the like, different random access parameter sets can be set for different service types and network slices to meet the characteristics and requirements of the corresponding service type and network slice. In the random access process, the differentiated differentiation of different events that trigger random access improves the experience of the terminal.
  • FIG. 6 exemplarily shows a random access procedure provided by an embodiment of the present application.
  • the flow shown in FIG. 6 can be applied to the scenario described in the foregoing scheme 2.
  • the procedure is also applicable to the scenario in which the terminal in the connected state or the inactive state in the scenario described in the third scenario performs a random access procedure by using a random access parameter set in the random access parameter set sent by the base station through the dedicated signaling.
  • the process can include:
  • the base station sends at least one random access parameter set to the connected or inactive terminal by using dedicated signaling.
  • the base station may send an RRC connection reconfiguration message, and send the at least one random access parameter set to the terminal by using the message.
  • the terminal returns an RRC connection reconfiguration complete message to the base station.
  • the base station may also send the at least one random access parameter set to the connected state or the inactive terminal by using other proprietary signaling.
  • the at least one random access parameter set may include the following situations:
  • Case 1 A set of random access parameters corresponding to multiple random access packets.
  • the multiple random access parameter sets include a random access parameter set corresponding to the default random access packet.
  • the manner in which random access packets are divided may be the same as in the previous embodiment.
  • the value of each parameter in the multiple random access parameter sets sent by the dedicated signaling may be different from the value of each parameter in the random access parameter set corresponding to the random access packet sent by the broadcast message.
  • the random access parameter set sent by the base station to the terminal by using the dedicated signaling may include only the random connection corresponding to the PLMN (ie, the PLMN currently accessed by the terminal).
  • the PLMN ID1 the identifier of the PLMN currently accessed by the terminal
  • Table 5 exemplarily shows the random access packet 0 and the random access packet 1 corresponding to the PLMN ID1.
  • Case 2 A set of random access parameters corresponding to multiple logical channels or logical channel groups.
  • a logical channel or logical channel group may correspond to a random access parameter set, or multiple logical channels or logical channel groups may correspond to a random access parameter set.
  • the parameter values in the random access parameter set corresponding to different logical channels or logical channel groups may be the same or different.
  • the random access parameter set can be dedicated to the connected state or the inactive terminal for random access.
  • the random access parameter set includes a monitoring start time and/or a time window length of the random access response time window.
  • the random access parameter set may further include other parameters, for example, may include one or any combination of the following parameters: indication information of the random access preamble sequence, and indication of the time-frequency resource occupied by the random access preamble sequence. The time length of the information, the contention resolution timer, and the maximum number of random accesses.
  • S602 The terminal in the connected state or the inactive state sends a random access request to the base station according to one of the at least one random access parameter set to trigger a random access procedure.
  • the terminal that triggers the connected state or the inactive state initiates the random access process for various reasons. For example, when the terminal is in the connected state, if uplink data and/or signaling needs to be sent, but the uplink is out of synchronization, then A random access procedure can be performed.
  • the random access procedure triggered by S602 of FIG. 6 includes a signaling interaction process between the terminal and the base station, and S602 and the signaling interaction of the triggered random access procedure are similar to the signaling interaction process shown in FIG. 4.
  • the signaling interaction process of the random access between the terminal and the base station may include the following situations:
  • Case 1 The base station sends the random access parameter set corresponding to the multiple random access packets by using the dedicated signaling, and the implementation process of the random access procedure initiated by the terminal may be the same as the process shown in FIG. 4 .
  • Case 2 The base station sends a set of random access parameters corresponding to multiple logical channels or logical channel groups through dedicated signaling, and the terminal may use logical channels or logical channel groups used for uplink data and/or signaling to be sent. Select the corresponding random access parameter set. After the terminal selects a random access parameter set, the random access procedure according to the random access parameter set is similar to the corresponding part of the process shown in FIG. 4, and the “random access packet” in the description of S402-405 may be Replace with "logical channel or channel group".
  • the corresponding random access parameter set may be determined according to the logical channel or the logical channel group used by the uplink data and/or signaling to be sent.
  • the terminal sends the Msg1 according to the random access preamble sequence in the random access parameter set and the time-frequency resource of the preamble sequence. Further, the terminal may start a random access response time window according to the monitoring start time and/or the time window length of the random access response time window in the random access parameter set, and monitor the Msg2 returned by the base station in the time window.
  • the base station may determine a corresponding logical channel or a logical channel group according to the random access preamble sequence sent by the terminal and/or the time-frequency resource occupied by the sequence, according to the Msg3 size corresponding to the logical channel or the logical channel group.
  • the threshold value is used to allocate an uplink resource to the terminal, and the indication information of the uplink resource is carried in the Msg2 and returned to the terminal.
  • the base station may carry multiple random backoff indications corresponding to multiple logical channels or logical channel groups in Msg2 and return them to the terminal.
  • One or more logical channels or logical channel groups correspond to a random backoff indication.
  • the format of MACCE in Msg2 can be as shown in FIG. 5.
  • the MAC CE in the Msg2 carries a random backoff indication
  • the random backoff indication (random backoff time) corresponding to each random access logical channel or logical channel group can be calculated as follows:
  • the random backoff indication included in the MAC CE is used as a reference value, and the random access time coefficient corresponding to the random access logical channel or the logical channel group is multiplied to obtain a random backoff time corresponding to the random access logical channel or the logical channel group.
  • the value range of the random access time coefficient may be set to (0, 1), that is, greater than 0 and less than 1.
  • Case 3 The base station sends a random access parameter set by using dedicated signaling, and the terminal initiates a random access procedure according to the random access parameter set, and the random access procedure is similar to the corresponding part in the process shown in FIG. The difference is that since there is only one parameter set for the random access of the terminal used in the connected state and the inactive state, the base station and the terminal do not need to perform the selection operation of the random access parameter set.
  • the base station may send multiple random access parameter sets to the terminal, and when performing random access, the terminal may perform according to one of the multiple random access parameter sets. Random access, which can differentiate the random access process for different scenarios.
  • FIG. 7 exemplarily shows the structure of the base station, which can perform the flow of the base station side implementation in the flow shown in FIGS. 3 and 4.
  • the base station may include: a sending module 701 and a receiving module 702.
  • the sending module 701 can be a transmitter for transmitting information.
  • the receiving module 702 can be a receiver for receiving information.
  • the transmitting module 701 can be a wireless signal transmitter for transmitting wireless signals
  • the receiving module 702 can be a wireless signal transmitter for transmitting wireless signals.
  • the sending module 701 and the receiving module 702 can also be connected to a processor (not shown in the figure), and the receiving module can send the received information to the processor for processing, and the sending module can process the processed information by the processor. Send it.
  • the sending module 701 is configured to send, by using a broadcast message, a plurality of random access parameter sets to the terminal; the receiving module 702 is configured to receive a random access request of the terminal, where the random access request uses the multiple random access parameter sets. one of the.
  • the multiple random access parameter sets are multiple random access parameter sets corresponding to multiple random access packets, and one or more random access packets correspond to one random access parameter set.
  • the plurality of random access parameter sets include a random access parameter set corresponding to a default random access packet.
  • the random access parameter set further includes a random access preamble sequence;
  • the random access request includes the random access preamble sequence;
  • the sending module 701 is further configured to: receive, by the receiving module 702, the terminal After the random access request is sent, the random access response message is returned to the terminal, where the random access response message includes indication information of an uplink resource allocated to the terminal;
  • the random access packet is a random access packet corresponding to the random access preamble sequence sent by the terminal, and is allocated by a scheduling message size threshold corresponding to the random access packet.
  • the sending module 701 is further configured to: after the receiving module 702 receives the random access request sent by the terminal, return a random access response to the terminal, where the random access response includes the multiple random Multiple random backoff indications corresponding to the access packet.
  • the embodiment of the present application further provides a base station.
  • Fig. 8 exemplarily shows the structure of the base station, which can perform the flow of the base station side implementation in the flow shown in Fig. 6.
  • the base station may include: a sending module 801 and a receiving module 802.
  • the transmitting module 801 can be a transmitter for transmitting information.
  • the receiving module 802 can be a receiver for receiving information.
  • the transmitting module 801 can be a wireless signal transmitter for transmitting wireless signals
  • the receiving module 802 can be a wireless signal transmitter for transmitting wireless signals.
  • the sending module 801 and the receiving module 802 may also be connected to a processor (not shown in the figure), and the receiving module may send the received information to the processor for processing, and the sending module may process the processed information by the processor. Send it.
  • the sending module 801 is configured to send, by using dedicated signaling, at least one random access parameter set to the terminal in the connected state or the inactive state; the receiving module 802 is configured to receive the random access request of the terminal in the connected state or the inactive state, where The random access request adopts one of the at least one random access parameter set; the random access parameter set includes a monitoring start time and/or a time window length of a random access response time window.
  • the random access parameter set further includes a random access preamble sequence; the random access request includes the random access preamble sequence; and the sending module 801 is further configured to: receive the connection at the receiving module 802. Returning a random access response to the terminal after the random access request of the terminal in the inactive or inactive state, where the random access response includes indication information of the uplink resource allocated to the terminal;
  • the base station is allocated according to a scheduling message size threshold corresponding to a random access packet, where the random access packet is a random access packet corresponding to the random access preamble sequence sent by the terminal.
  • the sending module 801 is further configured to: after the receiving module receives the random access request of the terminal in the connected state or the inactive state, return a random access response to the terminal, where the random access response
  • the plurality of random backoff indications corresponding to the plurality of random access packets or logical channels or logical channel groups are included.
  • the at least one random access parameter set is a random access parameter set; or the at least one random access parameter set is a plurality of random access parameter sets corresponding to multiple random access packets, and one Or the plurality of random access groups correspond to one random access parameter set; or the at least one random access parameter set is a random access parameter set corresponding to multiple logical channels or logical channel groups, one or more logical channels or The logical channel group corresponds to a random access parameter set.
  • the random access parameter set further includes one or any combination of the following parameters:
  • Fig. 9 exemplarily shows the structure of the terminal, which can perform the flow of the terminal side implementation in the flow shown in Figs. 3 and 4.
  • the terminal may include: a receiving module 901 and a sending module 902.
  • the transmitting module 902 can be a transmitter for transmitting information.
  • the receiving module 901 can be a receiver for receiving information.
  • the transmitting module 902 can be a wireless signal transmitter for transmitting wireless signals
  • the receiving module 901 can be a wireless signal transmitter for transmitting wireless signals.
  • the sending module 902 and the receiving module 901 can also be connected to a processor (not shown in the figure), and the receiving module can send the received information to the processor for processing, and the sending module can process the processed information by the processor. Send it.
  • the receiving module 901 is configured to receive a plurality of random access parameter sets sent by the base station by using a broadcast message, and the sending module 902 is configured to send, by using one of the multiple random access parameter sets, a random access request to the base station.
  • the multiple random access parameter sets are multiple random access parameter sets corresponding to multiple random access packets, and one or more random access packets correspond to one random access parameter set.
  • the plurality of random access parameter sets include a random access parameter set corresponding to a default random access packet.
  • a determining module (not shown in the figure) is further included, where the determining module is also replaced by a processor.
  • the receiving module 901 is further configured to: after the sending module 902 sends a random access request to the base station, receive a random access response returned by the base station, where the random access response includes multiple random backoff indications corresponding to multiple random access packets, and the determining module is configured to determine corresponding random access according to the random access event. And grouping, selecting, according to the determined random access packet, a corresponding random backoff indication from the plurality of random backoff indications corresponding to the multiple random access packets.
  • the embodiment of the present application further provides a terminal.
  • Fig. 10 exemplarily shows the structure of the terminal, which can execute the flow of the terminal side implementation in the flow shown in Fig. 6.
  • the terminal may include: a receiving module 1001 and a sending module 1002.
  • the transmitting module 1002 can be a transmitter for transmitting information.
  • the receiving module 1001 can be a receiver for receiving information.
  • the transmitting module 1002 can be a wireless signal transmitter for transmitting wireless signals
  • the receiving module 1001 can be a wireless signal transmitter for transmitting wireless signals.
  • the sending module 1002 and the receiving module 1001 may also be connected to a processor (not shown in the figure), and the receiving module may send the received information to the processor for processing, and the sending module may process the processed information by the processor. Send it.
  • the sending module 1002 is configured to: when the terminal is in a connected state or an inactive state, receive at least one random access parameter set sent by the base station by using dedicated signaling; and the sending module 1002 is configured to be in a connected state or inactive at the terminal. And transmitting, by the one of the at least one random access parameter set, a random access request to the base station; the random access parameter set includes a monitoring start time and/or time of a random access response time window. Window length.
  • a determining module (not shown in the figure) is further included, where the determining module is also replaced by a processor; the random access parameter set further includes a random access preamble sequence; and the random access request includes The determining module is configured to: determine a corresponding random access parameter set according to a logical channel or a logical channel group used for uplink data and/or signaling to be sent; And transmitting, according to the determined random access parameter set, the random access preamble sequence in the random access parameter set to the base station.
  • a determining module (not shown in the figure) is further included, where the determining module is also replaced by a processor; the receiving module is further configured to: after the sending module sends a random access request to the base station And receiving, by the base station, a random access response, where the random access response includes multiple random access packets or multiple random backoff indications corresponding to logical channels or logical channel groups; and the determining module is configured to use random The access event determines a corresponding random access packet or logical channel or logical channel group, and selects a corresponding random backoff indication from the plurality of random backoff indications according to the determined random access packet or logical channel or logical channel group.
  • the at least one random access parameter set is a random access parameter set; or the at least one random access parameter set is a plurality of random access parameter sets corresponding to multiple random access packets, and one Or a plurality of random access packets corresponding to a random access parameter set, where the plurality of random access packets correspond to a public land mobile network PLMN accessed by the connected state or the inactive terminal; or A random access parameter set is a random access parameter set corresponding to multiple logical channels or logical channel groups, and one or more logical channels or logical channel groups correspond to a random access parameter set.
  • the random access parameter set further includes one or any combination of the following parameters:
  • the embodiment of the present application further provides a base station.
  • Fig. 11 exemplarily shows the structure of the base station.
  • the network element includes a communication interface 1101, a processor 1102, and a memory 1103 for storing program code to be executed by the processor 1102.
  • the communication interface 1101 performs message interaction.
  • the processor 1102 is configured to execute program code stored in the memory, specifically for performing the method performed by the base station side in the foregoing embodiment.
  • the processor 1102 can be a central processing unit (CPU), or a digital processing module or the like.
  • the memory 1103 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or a volatile memory such as a random access memory. (random-access memory, referred to as RAM).
  • Memory 1103 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • connection medium between the communication interface 1101, the processor 1102, and the memory 1103 is not limited in the embodiment of the present application.
  • the memory 1103, the processor 1102, and the communication interface 1101 are connected by a bus 1104 in FIG. 11, and the bus is indicated by a thick line in FIG. 11, and the connection manner between other components is only schematically illustrated. , not limited to.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 11, but it does not mean that there is only one bus or one type of bus.
  • Fig. 12 exemplarily shows the structure of the terminal.
  • the network element includes a communication interface 1201, a processor 1202, and a memory 1203 for storing program code to be executed by the processor 1202.
  • Communication interface 1201 performs message interaction.
  • the processor 1202 is configured to execute the program code stored in the memory, specifically for performing the method performed by the terminal side in the foregoing embodiment.
  • the processor 1202 can be a central processing unit (CPU), or a digital processing module or the like.
  • the memory 1203 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or a volatile memory such as a random access memory. (random-access memory, referred to as RAM).
  • Memory 1203 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • connection medium between the communication interface 1201, the processor 1202, and the memory 1203 is not limited in the embodiment of the present application.
  • the memory 1203, the processor 1202, and the communication interface 1201 are connected by a bus 1204 in FIG. 12, and the bus is indicated by a thick line in FIG. 12, and the connection manner between other components is only schematically illustrated. , not limited to.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 12, but it does not mean that there is only one bus or one type of bus.
  • the embodiment of the invention further provides a computer readable storage medium for storing computer software instructions required to execute the above-mentioned processor, which comprises a program for executing the above-mentioned processor.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本申请公开了一种通信方法及装置。本申请的一个方案中，基站通过专有信令向连接态或非激活态的终端发送至少一个随机接入参数集合，所述基站接收连接态或非激活态的所述终端的随机接入请求，该随机接入请求采用所述至少一个随机接入参数集合中的一个。采用本申请可针对不同场景进行差异化的随机接入过程。

Description

一种通信方法及装置
本申请要求在2017年3月24日提交中国专利局、申请号为201710185971.1、发明名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域，尤其涉及一种通信方法及装置。
背景技术
第五代移动通信技术(简称5G)支持各种类型的网络部署和应用类型，比如支持面向车联网、应急通信、工业互联网等应用场景。为此，5G通信系统要求提供更高速率体验和更大带宽的接入能力，提供更低时延和高可靠的信息交互能力，以及提供更大规模和低成本的机器类型通信(machine type communication，简称MTC)设备的接入和管理能力。
5G通信系统中，超可靠和低时延通信(ultra-reliable and low latency communications，简称URLLC)和增强型移动宽带(enhanced Mobile Broad Band，简称eMBB)是两种关键应用类型，具有不同的业务特征。比如，从延迟性能来看，URLLC要求用户面时延在上行和下行上限制为0.5ms，而eMBB要求用户面时延在上行和下行上限制为4ms。
根据5G通信系统的特点，需要定义新的随机接入方法，以满足5G通信系统的要求。
发明内容
本申请实施例提供了一种通信方法及装置，以期满足5G通信系统的要求。
第一方面，提供一种通信方法，包括：基站通过广播消息向终端发送多个随机接入参数集合；所述基站接收所述终端的随机接入请求，所述随机接入请求采用所述多个随机接入参数集合中的一个。通过该实施例可针对不同场景差异化地发起随机接入。
可选地，所述多个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合。通过该实施例可基于随机接入分组设置对应的随机接入参数集合，进而可基于随机接入分组与业务类型、网络切片等的对应关系，为不同的场景(比如业务类型、网络切片)提供了相适配的随机接入参数集合。
可选地，所述多个随机接入参数集合中包括一个默认随机接入分组对应的随机接入参数集合。通过该实施例可在保证匹配到一个随机接入分组，从而保证随机接入的执行。
可选地，所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；所述基站接收所述终端发送的随机接入请求之后，还包括：所述基站向所述终端返回随机接入响应消息，所述随机接入响应消息中包括为所述终端分配的上行资源的指示信息；所述上行资源是所述基站根据一个随机接入分组对应的调度消息尺寸门限值分配的，该随机接入分组为所述终端发送的随机接入前导序列对应的随机接入分组。通过该实施例可实现根据终端对应的随机接入分组为该终端分配上行资源，以满足不同场景(随机接入分组可用于区分场景)下对上行资源的不同需求。
可选地，所述基站接收所述终端发送的随机接入请求之后，还包括：所述基站向所述终端返回随机接入响应，所述随机接入响应中包括所述多个随机接入分组对应的多个随机退避指示。通过该实施例可实现将不同随机接入分组对应的随机退避指示发送给终端，以使终端进行选择，从而满足不同场景(随机接入分组可用于区分场景)下对随机退避或对 随机接入时延或可靠性的要求。
第二方面，提供一种通信方法，包括：
基站通过专有信令向连接态或非激活态的终端发送至少一个随机接入参数集合；所述基站接收所述连接态或非激活态的终端的随机接入请求，所述随机接入请求采用所述至少一个随机接入参数集合中的一个；所述随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度。通过该实施例，一方面，在基站发送多个随机接入参数集合的情况下，可针对不同场景进行差异化地发起随机接入；另一方面，在基站发送一个随机接入参数集合的情况下，由于该随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度，因此可为连接态或非激活态的终端进行随机接入时提供随机接入响应时间窗的监视开始时间和/或时间窗长度。
可选地，所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；所述基站接收所述连接态或非激活态的终端的随机接入请求之后，还包括：所述基站向所述终端返回随机接入响应，所述随机接入响应中包括为所述终端分配的上行资源的指示信息；所述上行资源是所述基站根据一个随机接入分组对应的调度消息尺寸门限值分配的，该随机接入分组为所述终端发送的随机接入前导序列对应的随机接入分组。通过该实施例可实现根据终端对应的随机接入分组为该终端分配上行资源，以满足不同场景(随机接入分组可用于区分场景)下对上行资源的不同需求。
可选地，所述基站接收所述连接态或非激活态的终端的随机接入请求之后，还包括：所述基站向所述终端返回随机接入响应，所述随机接入响应中包括所述多个随机接入分组或逻辑信道或逻辑信道组对应的多个随机退避指示。通过该实施例可实现将不同随机接入分组或逻辑信道或逻辑信道组对应的随机退避指示发送给终端，以使终端进行选择，从而满足不同场景(随机接入分组或逻辑信道或逻辑信道组可用于区分场景)下对随机退避或对随机接入时延或可靠性的要求。
可选地，所述至少一个随机接入参数集合为一个随机接入参数集合；或者，所述至少一个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合；或者，所述至少一个随机接入参数集合为多个逻辑信道或逻辑信道组对应的随机接入参数集合，一个或多个逻辑信道或逻辑信道组对应一个随机接入参数集合。该实施例提供了多种可选的方案，使得随机接入参数集合可以与随机接入分组或逻辑信道或逻辑信道组对应，可针对不同需求使用相应的方案，提高了系统灵活性。
可选地，所述随机接入参数集合中还包括以下参数中的一个或任意组合：随机接入前导序列的指示信息；随机接入前导序列占用的时频资源的指示信息；竞争解决定时器的计时时间长度；随机接入最大次数；调度消息尺寸门限。该实施例针对随机接入参数集合中包括的参数提供了多种方案，可针对不同需求使用相应的方案，提高了系统灵活性。
第三方面，提供一种通信方法，包括：
终端接收基站通过广播消息发送的多个随机接入参数集合；
所述终端采用所述多个随机接入参数集合中的一个，向所述基站发送随机接入请求。
可选地，所述多个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合。
可选地，所述多个随机接入参数集合中包括一个默认随机接入分组对应的随机接入参 数集合。
可选地，所述向所述基站发送随机接入请求之后，还包括：所述终端接收所述基站返回的随机接入响应，所述随机接入响应中包括多个随机接入分组对应的多个随机退避指示；所述终端根据随机接入事件确定对应的随机接入分组，根据确定出的随机接入分组从所述多个随机接入分组对应的多个随机退避指示中选取对应的随机退避指示。
第四方面，提供一种通信方法，包括：
连接态或非激活态的终端接收基站通过专有信令发送的至少一个随机接入参数集合；
所述连接态或非激活态的终端采用所述至少一个随机接入参数集合中的一个，向所述基站发送随机接入请求；所述随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度。
可选地，所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；所述连接态或非激活态的终端采用所述至少一个随机接入参数集合中的一个，向所述基站发送随机接入请求，包括：所述连接态或非激活态的终端根据待发送的上行数据和/或信令使用的逻辑信道或逻辑信道组，确定对应的随机接入参数集合；所述连接态或非激活态的终端根据确定的随机接入参数集合，向所述基站发送该随机接入参数集合中的随机接入前导序列。
可选地，所述向所述基站发送随机接入请求之后，还包括：所述终端接收所述基站返回的随机接入响应，所述随机接入响应中包括多个随机接入分组或逻辑信道或逻辑信道组对应的多个随机退避指示；所述终端根据随机接入事件确定对应的随机接入分组或逻辑信道或逻辑信道组，根据确定出的随机接入分组或逻辑信道或逻辑信道组，从所述多个随机退避指示中选取对应的随机退避指示。
可选地，所述至少一个随机接入参数集合为一个随机接入参数集合；或者，所述至少一个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合，所述多个随机接入分组与所述连接态或非激活态终端所接入的公共陆地移动网络PLMN相对应；或者，所述至少一个随机接入参数集合为多个逻辑信道或逻辑信道组对应的随机接入参数集合，一个或多个逻辑信道或逻辑信道组对应一个随机接入参数集合。
可选地，所述随机接入参数集合中还包括以下参数中的一个或任意组合：
随机接入前导序列的指示信息；
随机接入前导序列占用的时频资源的指示信息；
竞争解决定时器的计时时间长度；
随机接入最大次数；
调度消息尺寸门限。
第五方面，提供一种基站，包括：
发送模块，用于通过广播消息向终端发送多个随机接入参数集合；
接收模块，用于接收所述终端的随机接入请求，所述随机接入请求采用所述多个随机接入参数集合中的一个。
可选地，所述多个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合。
可选地，所述多个随机接入参数集合中包括一个默认随机接入分组对应的随机接入参 数集合。
可选地，所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；所述发送模块还用于：在所述接收模块接收所述终端发送的随机接入请求之后，向所述终端返回随机接入响应消息，所述随机接入响应消息中包括为所述终端分配的上行资源的指示信息；所述上行资源是所述基站根据一个随机接入分组对应的调度消息尺寸门限值分配的，该随机接入分组为所述终端发送的随机接入前导序列对应的随机接入分组。
可选地，所述发送模块还用于：在所述接收模块接收所述终端发送的随机接入请求之后，向所述终端返回随机接入响应，所述随机接入响应中包括所述多个随机接入分组对应的多个随机退避指示。
第六方面，提供一种基站，包括：
发送模块，用于通过专有信令向连接态或非激活态的终端发送至少一个随机接入参数集合；
接收模块，用于接收所述连接态或非激活态的终端的随机接入请求，所述随机接入请求采用所述至少一个随机接入参数集合中的一个；所述随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度。
可选地，所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；所述发送模块还用于：在所述接收模块接收所述连接态或非激活态的终端的随机接入请求之后，向所述终端返回随机接入响应，所述随机接入响应中包括为所述终端分配的上行资源的指示信息；所述上行资源是所述基站根据一个随机接入分组对应的调度消息尺寸门限值分配的，该随机接入分组为所述终端发送的随机接入前导序列对应的随机接入分组。
可选地，所述发送模块还用于：在所述接收模块接收所述连接态或非激活态的终端的随机接入请求之后，向所述终端返回随机接入响应，所述随机接入响应中包括所述多个随机接入分组或逻辑信道或逻辑信道组对应的多个随机退避指示。
可选地，所述至少一个随机接入参数集合为一个随机接入参数集合；或者，所述至少一个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合；或者，所述至少一个随机接入参数集合为多个逻辑信道或逻辑信道组对应的随机接入参数集合，一个或多个逻辑信道或逻辑信道组对应一个随机接入参数集合。
可选地，所述随机接入参数集合中还包括以下参数中的一个或任意组合：
随机接入前导序列的指示信息；
随机接入前导序列占用的时频资源的指示信息；
竞争解决定时器的计时时间长度；
随机接入最大次数；
调度消息尺寸门限。
第七方面，提供一种终端，包括：
接收模块，用于接收基站通过广播消息发送的多个随机接入参数集合；
发送模块，用于采用所述多个随机接入参数集合中的一个，向所述基站发送随机接入请求。
可选地，所述多个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合。
可选地，所述多个随机接入参数集合中包括一个默认随机接入分组对应的随机接入参数集合。
可选地，还包括确定模块；所述接收模块还用于：在所述发送模块向所述基站发送随机接入请求之后，接收所述基站返回的随机接入响应，所述随机接入响应中包括多个随机接入分组对应的多个随机退避指示；所述确定模块，用于根据随机接入事件确定对应的随机接入分组，根据确定出的随机接入分组从所述多个随机接入分组对应的多个随机退避指示中选取对应的随机退避指示。
第八方面，提供一种终端，包括：
发送模块，用于在所述终端处于连接态或非激活态时，接收基站通过专有信令发送的至少一个随机接入参数集合；
发送模块，用于在所述终端处于连接态或非激活态时，采用所述至少一个随机接入参数集合中的一个，向所述基站发送随机接入请求；所述随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度。
可选地，还包括确定模块；所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；所述确定模块用于：根据待发送的上行数据和/或信令使用的逻辑信道或逻辑信道组，确定对应的随机接入参数集合；所述发送模块具体用于，根据确定的随机接入参数集合，向所述基站发送该随机接入参数集合中的随机接入前导序列。
可选地，还包括确定模块；所述接收模块还用于：在所述发送模块向所述基站发送随机接入请求之后，接收所述基站返回的随机接入响应，所述随机接入响应中包括多个随机接入分组或逻辑信道或逻辑信道组对应的多个随机退避指示；所述确定模块，用于根据随机接入事件确定对应的随机接入分组或逻辑信道或逻辑信道组，根据确定出的随机接入分组或逻辑信道或逻辑信道组，从所述多个随机退避指示中选取对应的随机退避指示。
可选地，所述至少一个随机接入参数集合为一个随机接入参数集合；或者，所述至少一个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合，所述多个随机接入分组与所述连接态或非激活态终端所接入的公共陆地移动网络PLMN相对应；或者，所述至少一个随机接入参数集合为多个逻辑信道或逻辑信道组对应的随机接入参数集合，一个或多个逻辑信道或逻辑信道组对应一个随机接入参数集合。
可选地，所述随机接入参数集合中还包括以下参数中的一个或任意组合：
随机接入前导序列的指示信息；
随机接入前导序列占用的时频资源的指示信息；
竞争解决定时器的计时时间长度；
随机接入最大次数。
第十方面，提供一种通信方法，包括：基站通过专有信令向连接态或非激活态的终端发送多个随机接入参数集合；所述基站接收所述连接态或非激活态的终端的随机接入请求，所述随机接入请求采用所述多个随机接入参数集合中的一个。
第十一方面，提供一种通信方法，包括：连接态或非激活态的终端接收基站通过专有 信令发送的多个随机接入参数集合；所述连接态或非激活态的终端采用所述多个随机接入参数集合中的一个，向基站发送随机接入请求。
可选地，上述第一方面至第十一方面所提供的任意一种方法及其可选的实现方式中，所述方法还包括：所述基站向终端发送随机接入分组的配置信息，所述随机接入分组由核心网设备配置。进一步地，一个随机接入分组与公共陆地移动网络PLMN、业务类型、网络切片、应用类型、接入类型中的至少一个相对应。可选地，随机接入分组的配置信息中包括PLMN指示、业务类型指示、网络切片指示、应用类型指示、接入类型指示中的至少一个。
可选地，上述第一方面至第十一方面所提供的任意一种方法及其可选的实现方式中，所述随机接入参数集合中，包括以下参数中的一个或任意组合：
随机接入前导序列的指示信息；
随机接入前导序列占用的时频资源的指示信息；
随机接入响应时间窗的监视开始时间和/或时间窗长度；
竞争解决定时器的计时时间长度；
随机接入最大次数；
调度消息尺寸门限。
可选地，所述随机接入参数集合中，还包括随机退避指示。
第十二方面，提供了一种基站，该基站包括：存储器以及处理器，存储器用于存储处理器所需执行的程序代码。通信接口用于与终端通信。处理器用于执行存储器所存储的程序代码，具体用于执行第一方面、第二方面和第十方面的任一种方法。
第十三方面，提供了一种终端，该基站包括：存储器以及处理器，存储器用于存储处理器所需执行的程序代码。通信接口用于与基站通信。处理器用于执行存储器所存储的程序代码，具体用于执行第三方面、第四方面和第十二方面的任一种方法。
第十四方面，提供了一种计算机可读存储介质，用于存储为执行上述第一方面或第二方面中的任意一种设计的功能所用的计算机软件指令，其包含用于执行上述第一方面或第二方面或第十方面的任意一种设计的方法所设计的程序。
第十五方面，提供了一种计算机可读存储介质，用于存储为执行上述第三方面或第四方面或第十一方面中的任意一种设计的功能所用的计算机软件指令，其包含用于执行上述第三方面或第四方面的任意一种设计的方法所设计的程序。
本申请的上述实施例中，基站可向终端发送多个随机接入参数集合，终端在进行随机接入时，可根据该多个随机接入参数集合中的一个进行随机接入，可针对不同场景进行差异化的随机接入过程。
附图说明
图1示例性地示出了一种5G网络架构示意图；
图2示例性地示出了本申请实施例中的注册区域更新流程示意图；
图3示例性地示出了本申请实施例提供的随机接入流程示意图；
图4示例性地示出了图3中的S302的实现过程；
图5示例性地示出了本申请实施例提供的媒体接入控制控制单元(Media Access Control-Control Element，简称MAC CE)结构示意图；
图6示例性地示出了本申请另一实施例提供的随机接入流程示意图；
图7、图8分别示例性地示出了本申请实施例提供的基站的结构示意图；
图9、图10分别示例性地示出了本申请实施例提供的终端的结构示意图；
图11示例性地示出了本申请另外的实施例提供的基站的结构示意图；
图12示例性地示出了本申请另外的实施例提供的终端的结构示意图。
具体实施方式
图1示例性地示出了一种5G网络架构的示意图。如图所示，该网络架构中可包括基站和核心网设备，以及终端。其中，核心网设备为5G核心网设备，基站为新的无线基站(New Radio基站)或演进的长期演进(long term evolution，简称LTE)基站(即eLTE基站)。终端可以经基站与核心网设备进行通信，例如，终端可以是移动电话(或称为“蜂窝”电话)、具有移动终端的计算机等，例如，终端还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语音和/或数据。本申请实施例中的终端还可以是D2D(device to device，设备与设备)终端或者M2M(machine to machine，机器与机器)终端。
网络切片是5G系统的一项关键技术。一个网络切片包括了能够满足业务需求的所有资源。具体的说，其包括：核心网控制和用户面网络功能及其资源(比如，计算、存储、网络资源等)，以及空口接入网络。
一个终端可同时支持和接入多个网络切片中。当终端初始接入网络或者进行注册区域更新(tracking area update,简称TAU)时，终端提供切片选择辅助信息(network slice selection assistance information,NSSAI)用于网络选择无线接入网络(Radio Access Network，简称RAN)部分的切片实例和核心网部分的切片实例。该NSSAI由一个或者一组S-NSSAI(single management-network slice selection assistance information，会话管理-切片选择辅助信息)构成，一个S-NSSAI可用于选择一个特定的网络切片。
每一个S-NSSAI可包括下列内容：切片/业务类型(slice/service type，简称SST)，指向切片特定的特征和业务类型，可选地，还可包括切片区分符(slice differentiator，简称SD)。SD作为SST的补充，可进一步区分满足相同SST的多个网络切片实例。
在5G通信系统中，终端的状态有三种：空闲态、连接态和非激活态。空闲态的终端与基站间没有无线接入控制(radio resource control，简称RRC)连接，连接态和激活态的终端与基站之间存在RRC连接，激活态的终端与基站之间的RRC连接暂停。
现有LTE系统下所有随机接入时间基于一套随机接入参数，无法满足5G系统下多种业务类型、多种网络切片，多种接入类型的不同需求。为解决5G系统下多种业务类型、多种网络切片，多种接入类型的不同需求，本申请实施例针对新一代空口下的随机接入过程提出了基于业务类型、网络切片、接入需求、信令等级等基于随机接入分组的随机接入方案，使得网络侧在终端随机接入过程，能够基于不同的随机接入分组，灵活的分配空口资源，提升了用户体验，满足了新空口下新的传输特性，保证了系统在随机接入方案的灵活性差异性和可靠性。
本申请实施例中，定义了多个随机接入分组。随机接入分组可基于业务类型、切片类型、连接类型等角度划分。为了在随机接入过程中，实现对不同的业务类型、切片类型、连接类型的区分化对待，本申请实施例针对每个随机接入分组定义了一个随机接入参数集合。
本申请实施例提供的通信方法可涉及随机接入参数配置步骤以及随机接入请求发起步骤，可基于图1所示的网络架构实现。当然也可以基于演进的网络架构实现。下面结合附图对本申请实施例进行详细描述。
总体来说，本申请实施例提供了以下几种方案：
方案一：基站通过广播消息向终端发送多个随机接入参数集合。所述“多个”是指两个或两个以上。终端可采用所述多个随机接入参数集合中的一个随机接入参数集合向基站发送随机接入请求，从而与基站进行随机接入过程。一个或多个随机接入分组对应一个随机接入参数集合。可选地，所述多个随机接入参数集合中包括一个与默认随机接入分组对应的随机接入参数集合。
该方案可适用于空闲态的终端、连接态的终端或非激活态的终端。具体地，空闲态、连接态和非激活态的终端均可接收基站通过广播消息发送的多个随机接入参数集合，空闲态、连接态和非激活态的终端均可以在需要进行随机接入时，采用所述多个随机接入参数集合中的一个随机接入参数集合发起随机接入过程。
方案二：基站通过专有信令向连接态或非激活态的终端发送至少一个随机接入参数集合。在所述“至少一个随机接入参数集合”是指多个随机接入参数集合的情况下，所述多个随机接入参数集合可与多个随机接入分组对应，其中，一个或多个随机接入分组对应一个随机接入参数集合；所述多个随机接入参数集合也可以与多个逻辑信道或逻辑信道组对应，一个逻辑信道或逻辑信道组对应一个随机接入参数集合，或者多个逻辑频道或逻辑信道组对应一个随机接入参数集合。
该方案可适用于连接态和非激活态的终端。在所述“至少一个随机接入参数集合”是指一个随机接入参数集合的情况下，所述连接态或非激活态的终端可采用该随机接入参数集合发起随机接入过程；在所述“至少一个随机接入参数集合”是指多个随机接入参数集合的情况下，连接态或非激活态的终端可根据所述多个随机接入参数集合中的一个随机接入参数集合发起随机接入过程。
方案三：将上述方案一和方案二结合。具体地，基站可通过广播消息向终端发送多个随机接入参数集合，还可通过专用信令向连接态或非激活态的终端发送至少一个随机接入参数集合。其中，基站通过广播消息发送的随机接入参数集合用于空闲态的终端发起随机接入，基站通过专有信令发送的随机接入参数集合用于连接态或非激活态的终端发起随机接入。
本申请实施例中，随机接入分组可根据终端所请求接入的公共陆地移动网络(Public Land Mobile Network，简称PLMN)、所请求的业务类型、所使用的网络切片、所采用的接入类型等因素进行划分。其中，可选地，业务类型可包括：短消息业务(short messaging service，简称SMS)、IP多媒体子系统(IP multimedia subsystem，简称IMS)语音业务、IMS视频业务等。可选地，接入类型可包括：紧急业务接入、高优先级接入、移动终止接入、非接入层信令、接入层信令等。
可选地，一个随机接入分组可与PLMN、业务类型、网络切片、应用类型、接入类型中的至少一个相对应。相应地，一个随机接入分组的配置信息中包括PLMN标识、业务类型标识、网络切片标识、应用类型标识、接入类型标识中的至少一个。其中，网络切片标识可以是S-NSSAI(包括SST和SD)。表1示例性地示出了随机接入分组的配置信息的例子。
表1：随机接入分组的配置信息
Figure PCTCN2018080336-appb-000001
表1示出了随机接入分组0、随机接入分组1、随机接入分组2和随机接入分组3的配置信息。每个随机接入分组的配置信息中可包括PLMN标识、网络切片标识、应用类型标识、业务类型标识等。其中，“*”为通配符，表示任意匹配。比如，随机接入分组2的配置信息中，PLMN标识表示为*，则表明可以是任意PLMN网络。可选地，默认随机接入分组的配置信息中，PLMN标识、网络切片标识、业务类型标识等项可用通配符表示。默认随机接入分组的优先级最低，当终端根据随机接入事件无法匹配到除了默认随机接入分组以外的其他随机接入分组时，才会选择默认随机接入分组。
从表1中可以看出，其定义了一种统一的随机接入分组格式，可用于定义各种可能的应用场景。PLMN标识、业务类型标识、网络切片标识、应用类型标识、接入类型标识中的至少一个或多个组合，可以区分不同的随机接入分组。
随机接入分组可由核心网设备配置并发送给基站，基站可将该随机接入分组的配置信息发送给终端。随机接入分组的配置信息，可在执行接入网络过程(即网络注册过程)中，或者服务请求(service request)过程中，或者协议数据单元(protocol data unit，简称PDU)会话建立过程中，或者注册更新(registration)过程中，由核心网设备经由基站发送给终端。
图2示例性地示出了终端的注册区域更新流程，在该流程中基站将随机接入分组的配置信息发送给终端。如图所示，该流程可包括如下步骤：
S201～S202：终端向基站发送注册区域更新请求消息，基站向核心网设备发送注册区域更新请求。
S203：核心网设备向基站发送注册区域更新响应消息，该响应消息中包括随机接入分组的配置信息。
S204：基站向终端发送注册区域更新响应消息，该响应消息中包括随机接入分组的配置信息。
S205～S206：终端向基站发送注册区域更新完成消息，基站向核心网设备发送注册区域更新完成消息。
本申请实施例中，一个随机接入参数集合中，可包括以下参数中的一个或任意组合：
-随机接入前导序列的指示信息。随机接入前导序列也称为物理随机接入信道(pPhysical random access channel，简称PRACH)序列。一个随机接入前导序列的指示信息可以是一个随机接入前导序列的索引，也可以是一个随机接入前导序列相对应随机接入前导根序列的位移。可选地，不同的随机接入参数集合中的随机接入前导序列的指示信息不同，这样不同的随机接入分组对应不同的随机接入前 导序列，当有多个终端发起随机接入时，由于这多个终端可能对应于不同的随机接入分组，因此可以使用不同的随机接入前导序列发送Msg1(即随机接入过程中的第一条消息)，从而可缓解甚至消除由某一随机接入事件引发的Msg1风暴对其他随机接入事件的影响，还可以在随机接入阶段(尤其是初始随机接入阶段)使网络侧区分出业务类型、网络切换、应用类型等的差异，比如终端发起的是URLLC业务还是eMBB业务，从而为网络侧的处理操作提供依据。
可选地，每个小区可以有64个可用的随机接入前导序列。这些序列分为两个部分，一部分用于竞争的随机接入，另一部分用于基于非竞争的随机接入。基于竞争的随机接入前导序列又可分为A组和B组。
-随机接入前导序列占用的时频资源的指示信息，用于指示随机接入前导序列占用的时频资源。可选地，不同的随机接入参数集合中的随机接入前导序列的时频资源指示信息不同，这样不同的随机接入分组对应不同的随机接入前导时频资源，当有多个终端发起随机接入时，由于这多个终端可能对应于不同的随机接入分组，因此可以使用不同的随机接入前导序列时频资源发送Msg1消息，从而可缓解甚至消除由某一随机接入事件引发的Msg1风暴对其他随机接入事件的影响。
-随机接入响应时间窗的监视开始时间和/或时间窗长度。随机接入响应时间窗用于终端监听基站发送的随机接入响应消息(即随机接入过程中的Msg2)。终端向基站发送随机接入前导序列(通过Msg1)后，可开启随机接入响应时间窗，在该时间窗内监听基站返回的随机接入响应消息。可选地，随机接入响应时间窗可开始于终端发送随机接入前导序列的子帧之后的数个子帧(表示为发送随机接入前导序列的子帧+该时间窗的监视开始时间)，并持续该时间窗的时间窗长度，该时间窗长度可以是数个子帧，用该时间窗的ra-RsponseWindowSize参数表示。
考虑到一个或多个随机接入分组可对应一个随机接入参数集合，而随机接入分组可从业务类型、网络切片等角度进行划分，因此可根据不同业务类型和/或不同网络切片的特点和需求，设置不同的随机接入响应时间窗参数。比如，对于URLLC类型的业务设置较短的监视开始时间和时间窗长度，以使进行该类型业务的终端可较快接入网络。表2示例性地示出了不同随机接入分组对应的随机接入参数集合中的随机接入响应时间窗的监视开始时间和/或时间窗长度。
表2：不同随机接入分组对应的随机接入参数集合中的随机接入响应时间窗参数
Figure PCTCN2018080336-appb-000002
表2中，随机接入分组0对应的业务类型为URLLC，随机接入分组1对应的业务类型为eMBB，由于URLLC业务对时延的要求高于eMBB业务，因此随机接入分组0对应的随机接入参数集合中的随机接入响应时间窗的监视开始时间较短。
-竞争解决定时器的计时时间长度，该时间长度可以是以ms为单位，也可以是以传输时间间隔(transmission time interval，简称TTI)为单位。竞争解决定时器用于终端在该定时器的计时时间内监听基站返回的竞争解决消息(即随机接入过程中的Msg4)。终端在向基站发送Msg3后，可开启该定时器，并在该定时器的计时时 间内监听基站返回的竞争解决消息。可选地，可针对不同的随机接入分组设置不同的竞争解决定时器的计时时间长度。比如，针对URLLC类型业务对应的随机接入分组，可设置较短时间长度，以满足该类型业务的时延要求。
-随机接入最大次数。若终端的随机接入过程失败，则可在未达到随机接入最大次数的情况下，重新发起随机接入过程。可选地，可针对不同的随机接入分组设置不同的随机接入最大次数，比如，针对URLLC类型业务对应的随机接入分组，可设置较大的随机接入最大次数，以满足该类型业务的可靠性要求。
-调度消息(Msg3)尺寸门限。不同的随机接入分组可对应不同的调度消息(Msg3)尺寸门限。
进一步地，一个随机接入参数集合中还可包括随机退避指示，用于指示随机退避时间长度。当终端随机接入失败需要再次发起随机接入时，可根据随机退避指示所指示的随机退避时间长度，在相应的时间区间内随机选择一个时刻发送随机接入前导序列。可选地，不同的随机接入分组所对应的随机退避指示的取值可以不同，比如对于时延要求高的业务类型所对应的随机接入分组，为其设置的随机退避时间的长度较短，以便在随机接入失败时尽快再次发起随机接入过程。
进一步地，一个随机接入参数集合中还可包括Msg3门限，用于指示其选择Msg1时所用的随机接入前导序列分组(A组和B组)。可选地，不同的随机接入分组所对应的Msg3门限的取值可以不同，比如对于高吞吐量需求的eMBB业务类型所对应的随机接入分组，为其设置的Msg3门限较大，以便基站在分配Msg3对应的上行资源时，分配较大的上行资源。
以上仅为一个随机接入参数集合中包含的随机接入参数的示例性举例，以上列举的随机参数也可被其他随机参数替代，或者除以上列举出的随机接入参数以外，还可以包含其他随机接入参数。比如，随机接入参数集合中还可包括随机接入前导序列的数量、随机接入前导序列的分组信息(基于竞争的随机接入前导序列可被分为A组和B组)等。所述随机接入前导序列的分组信息可以是分组A的指示信息或分组B的指示信息。
随机接入参数集合中所包含的随机接入参数可采用多种数据结构进行组织。作为一个例子，一个随机接入参数集合中包含的随机接入参数可划分为3个参数子集：
参数子集1：也可称为随机接入信道公共配置(RACH-Config Common)子集。RACH-Config Common中可包括以下参数中的一个或多个：随机接入前导序列的数量、随机接入前导序列分组信息、调度消息(Msg3)的尺寸门限值。以上仅为示例性列举，RACH-Config Common中还可包含其他参数。
参数子集2：也可称为PRACH系统配置(PRACH-ConfigSIB)子集。PRACH-ConfigSIB中可包括以下参数中的一个或多个：随机接入前导根序列、PRACH时频资源信息。PRACH时频资源信息用于指示随机接入前导序列占用的时频资源。以上仅为示例性列举，PRACH-ConfigSIB中还可包含其他参数。
参数子集3：也可称为定时器和时间窗子集。该子集中可包括以下参数中的一个或多个：随机接入响应窗口长度(ra-RsponseWindowSize)、随机退避指示(Backoff indicator)、竞争解决定时器(mac-ContentionResolutionTimer)计时时间长度。以上仅为示例性列举，该子集中还可包含其他参数。
表3示例性地以列表方式示出了基站通过广播消息发送的3个随机接入参数集合。
表3：基站通过广播消息发送的多个随机接入参数集合
Figure PCTCN2018080336-appb-000003
表3示出了随机接入分组0、随机接入分组1和随机接入分组2对应的3个随机接入参数集合，每个随机接入参数集合包括RACH-Config Common参数子集、PRACH-ConfigSIB参数子集，以及定时器和时间窗参数子集。
不同的随机接入参数集合中包含的参数可能存在以下几种情况：部分参数的参数值相同，或全部参数的参数值相同，或全部参数的参数值均不同。这样，不同的随机接入参数集合具有多种表现形式，以下列举了几种可能情况：
情况1：对于不同的随机接入参数集合，其所包含的随机接入前导序列不同且属于不同的随机接入前导序列分组，但随机接入前导序列占用的时频资源相同，不同随机接入参数集合中的Msg3尺寸门限值也不相同。
情况2：对于不同随机接入参数集合，其所包含的随机接入前导序列相同且属于相同的随机接入前导序列分组，但随机接入前导序列占用的时频资源不同，不同随机接入参数集合中的Msg3尺寸门限值相同。
情况3：对于不同的随机接入参数集合，其所包含的随机接入前导序列不同且属于不同的随机接入前导序列分组，并且随机接入前导序列占用的时频资源也不相同，不同随机接入参数集合中的Msg3尺寸门限值也不相同。
与逻辑信道或逻辑信道组对应的随机接入参数集合，其包含的参数类型与前述实施例类似。不同的逻辑信道或逻辑信道组对应的随机接入参数集合中的参数值可以相同也可以不同。根据逻辑信道或逻辑信道组的优先级不同，可为不同优先级的逻辑信道或逻辑信道组对应的随机接入参数集合中的参数设置不同的取值。以逻辑信道1和逻辑信道2为例，逻辑信道1对应的随机参数集合为集合A，逻辑信道2对应的随机接入参数集合为集合B，逻辑信道1的优先级高于逻辑信道2的优先级，则集合A和集合B中的随机接入参数可包括以下特征之一或组合：
集合A和集合B中，随机接入前导序列不同和/或随机接入前导序列占用的时频资源不同，这样，基站可以基于接收到的随机接入前导序列和/或该序列占用的时频资源确定出对应的逻辑信道或逻辑信道组，从而为后续操作提供依据；
集合A和集合B中，随机接入响应时间窗的监视开始时间和/或时间窗长度不同，且集合A中的随机接入响应时间窗的监视开始时间和持续时间较短，可保证使用高优先级的逻辑信道或逻辑信道组的数据可尽快传输。
集合A和集合B中，随机接入最大次数不同，且集合A中的随机接入最大次数较大，这样可针对高优先级的逻辑信道或逻辑信道组，保证其接入的成功率。
集合A和集合B中，竞争解决定时器的计时时间长度不同，且集合A中的竞争解决定时器的计时时间长度较长，这样可针对高优先级的逻辑信道或逻辑信道组，尽可能保证接收到竞争解决消息。
可选地，不同的逻辑信道或逻辑信道组所对应的随机退避指示的取值不同。比如，优先级高的逻辑信道或逻辑信道组对应的随机退避时间较短(取值越小则可能越先执行随机退避)，这样可以针对高优先级的逻辑信道或逻辑信道组尽快地进行随机接入。
本申请实施例中的上述随机接入参数集合可由基站发送给终端，以使终端在随机接入时使用。下面结合附图对本申请实施例提供的随机接入参数配置过程以及随机接入过程进行详细描述。
图3示例性地示出了本申请实施例提供的一种通信流程。图3所示的流程可适用于前述方案一所描述的场景。该流程也适用于方案三描述的场景中处于空闲态的终端使用基站通过广播消息发送的多个随机接入参数集合中的一个随机接入参数集合发起随机接入过程的场景。
如图所示，该流程可包括：
S301：基站通过广播消息向终端发送多个随机接入参数集合。
该步骤中，由于基站通过广播消息发送多个随机接入参数集合，因此终端无论处于空闲态、连接态还是非激活态，均可接收所述多个随机接入参数集合。终端接收到基站发送的多个随机接入参数集合后，可将其保存在终端中。
基站发送的所述多个随机接入参数集合，可以是与多个随机接入分组对应的随机接入参数集合，一个或多个随机接入分组可对应一个随机接入参数集合。可选地，该多个随机接入参数集合中包括默认的随机接入分组对应的随机接入参数集合。
S302：终端采用所述多个随机接入参数集合中的一组，向基站发送随机接入请求，以触发随机接入过程。
该步骤中，终端无论处于空闲态、连接态还是非激活态，均可根据所述多个随机接入参数集合中的一个随机接入参数集合发起随机接入过程。比如，终端处于空闲态时，如果有上行数据和/或信令需要发送，则可采用所述多个随机接入参数集合中的一个随机接入参数集合发起随机接入过程。再比如，终端处于连接态时，如果有上行数据和/或信令需要发送，但上行失步，则可采用所述多个随机接入参数集合中的一个随机接入参数集合发起随机接入过程。以上仅示例性地列举了触发随机接入的几种原因，当然，还可能因其他原因触发随机接入过程，比如处于连接态的终端发生切换时或者进行终端定位时，在此不再一一列举。
图3的S302中终端发送随机接入请求以及基于该随机接入请求所触发的随机接入过程包括终端与基站之间的信令交互过程。图4示例性地示出了图3中的S302的一种实现过程。如图4所示，该流程可包括：
S401：终端根据触发随机接入过程的随机接入事件，从基站发送的多个随机接入参数集合中选择一个随机接入参数集合。
其中，随机接入事件可触发随机接入过程。随机接入事件可包括多种，用以描述不同的随机接入触发原因、场景等。举例来说，随机接入事件可包括：
(1)初始接入；
(2)RRC连接重建；
(3)小区切换；
(4)连接态的终端下行数据到达，但上行失步；
(5)连接态的终端上行数据到达，但上行失步；
(6)连接态的终端进行定位。
本申请实施例中，对上述随机接入事件可进行进一步细化，从而使终端根据更细化的场景或原因选择相应的随机接入参数集合。举例来说，进一步细化的随机接入事件可描述为：
(1)初始接入
该随机接入事件可进一步从业务类型、网络切片、PLMN、应用类型、接入类型的角度进行划分。其划分角度与随机接入分组的划分角度类似。
(2)连接态的终端上行数据到达，但上行失步
该随机接入事件可进一步从业务类型、网络切片、PLMN、应用类型、接入类型的角度进行划分。其划分角度与随机接入分组的划分角度类似。
S402：终端向基站发送随机接入前导序列(如图中的Msg1)。该步骤对应于图3中的S302。S402中发送的随机接入前导序列可理解为S302中发送的随机接入请求的一个特例或示例。
该步骤中，如果终端所选择的随机接入参数集合中包括随机接入前导序列的指示信息，则终端可根据随机接入前导序列的指示信息发送对应的随机接入前导序列。如果终端所选择的随机接入参数集合中包括随机接入前导序列的时频资源指示信息，则终端可使用相应的时频资源发送随机接入前导序列。
进一步地，如果终端选择的随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度，则终端可在发送随机接入前导序列后，在相应的时间段内(即随机接入响应时间窗内)监听物理下行控制信道(physical downlink control channel，简称PDCCH)，以接收基站发送的随机接入响应消息。
S403：基站接收到终端发送的随机接入前导序列(Msg1)后，为终端分配上行资源，向终端返回随机接入响应消息(如图中的Msg2)，其中携带为终端分配的上行资源的指示信息以及该终端在S402中发送的随机接入前导序列。
该步骤中，在基站可根据接收到的随机接入前导序列和/或随机接入前导序列占用的时频资源确定出对应的随机接入分组的情况，基站可根据确定出的随机接入分组对应的调度消息(Msg3)的尺寸门限值，为终端分配相应大小的上行资源，使得分配给终端的上行资源可传输尺寸大小不超过该尺寸门限值的Msg3。一个或多个随机接入分组可对应一个Msg3的尺寸门限值。可选地，不同随机接入分组对应的Msg3的尺寸门限值可以不同，以满足不同情况下Msg3消息的要求。比如，针对不同的接入类型(非激活态终端接入、初始接入等)设置对应的随机接入分组集合，其中针对非激活态终端接入类型所对应的随机接入分组，其对应的Msg3的尺寸门限值较大，以满足非激活态终端需要在Msg3中携带Resume ID甚至携带数据的要求；针对初始接入类型所对应的随机接入分组，其对应的Msg3的尺寸门限值较小，以适应初始随机接入的终端在Msg3消息中携带S-TMSI或者随机数的要求。这样，如果基站确定出终端的接入类型为非激活态终端接入，则可为其分配较大的上行资源，如果基站确定出终端的接入类型为初始接入，则可为其分配较小的上行传输资源。
其中，如果不同随机接入分组所对应的随机接入前导序列不同，或随机接入前导序列占用的时频资源不同，或者随机接入前导序列和该随机接入前导序列占用的时频资源的组合情况不同，则基站可根据接收到的Msg1确定出对应的随机接入分组。
S404：终端接收到随机接入响应消息(Msg2)后，若该消息中包含该终端在S402中发送的随机接入前导序列，则根据基站分配的上行资源发送调度消息(如图中的Msg3)。
该步骤中，终端发送Msg3后，可启动竞争解决定时器，在该竞争解决定时器的计时时间内监听PDCCH以接收基站返回的竞争解决消息(Msg4)。进一步地，若终端进行针对Msg3的混合自动重传请求(hybrid automatic repeat request，简称HARQ)，则重置该定时器。
S405：基站接收到终端发送的调度消息(Msg3)后，向终端返回竞争解决消息(如图中的Msg4)。如果Msg4表明冲突解决成功，则终端确认随机接入过程成功。
可选地，若基站接收到终端发送的Msg1后，无法接入该终端，则可在返回给终端的随机接入响应消息中包括随机退避指示。如果基站可根据接收到的随机接入前导序列和/或随机接入前导序列占用的时频资源确定出对应的随机接入分组，则可将该随机接入分组对应的随机退避指示携带于随机接入响应消息。如果基站无法根据接收到的随机接入前导序列和/或随机接入前导序列占用的时频资源确定出对应的随机接入分组，则可将每个随机接入分组对应的随机退避指示携带于随机接入响应消息。可选地，一个或多个随机接入分组对应一个随机退避指示。
在一种实施例中，定义了Msg2中新的MAC CE格式，以携带多个随机接入分组对应的多个随机退避指示。图5示例性地示出了携带有5个随机接入分组对应的随机退避指示的MAC CE。该MAC CE中的BI-0至BI-4分别为随机接入分组0至随机接入分组4所对应的随机退避指示。可选地，每个随机退避指示占用的比特数相同。可约定MAC CE中包含的随机退避指示与随机接入分组的对应关系，比如，以5个随机接入分组为例，则MAC CE中包含的随机退避指示按照约定的排列顺序依次与该5个随机接入分组对应。一种对应关系如图5所示。
在另一种实施例中，Msg2中的MAC CE中携带一个随机退避指示。每个随机接入分组对应的随机退避指示(随机退避时间)，可根据如下方式计算得到：将MAC CE中包含的随机退避指示作为基准值，乘以该随机接入分组对应的随机接入时间系数，得到该随机接入分组对应的随机退避时间。其中，随机接入时间系数的取值范围可设置为(0,1)，即大于0且小于1。
可选地，在基站发送给终端的随机接入参数集合中包括随机退避指示的情况下，基站发送的随机接入响应消息中可不包含随机退避指示。
进一步地，如果终端接收到的Msg2中包含多个随机接入分组对应的随机退避指示或随机退避时间系数，则终端可根据S401中确定出的随机接入分组，从该多个随机接入分组对应的随机退避指示中选择相应的随机退避指示或随机退避时间系数，用于执行随机退避过程。
上述流程中，S405中，如果终端接收到的Msg4表明冲突解决失败，则终端可判断当前是否已经达到最大随机接入次数，若还未达到，则终端可根据随机退避指示启动随机退避定时器，执行随机退避，即在随机退避定时器超时的时候重新发起随机接入过程，所发起的随机接入过程可如前述流程中的S402至S405。若当前已经达到最大随机接入次数，则可进一步通知高层发生了随机接入问题，其中，所述高层可以是无线(如RRC层)。
其中，如果终端在S401中选择出的随机接入参数集合中包括最大随机接入次数，则终端可根据该最大随机接入次数判断当前是否已经达到最大随机接入次数，否则，可根据 默认的最大随机接入次数判断当前是否已经达到最大随机接入次数。该默认的最大随机接入次数适用于所有随机接入分组。
上述流程中，若基站发送Msg2后，终端在随机接入响应时间窗内未接收到基站返回的Msg3，或者接收到Msg3但该Msg3中未包含该终端在S402中发送的随机接入前导序列，则终端认为本次随机接入过程失败。这种情况下，在一种方案中，终端可在未达到随机接入最大次数的情况下，再次发起随机接入过程；在另一种方案中，如果Msg2中包含有随机退避指示或者终端可根据接收到的Msg2确定出随机退避指示，则在未达到随机退避最大次数的情况下，可根据该随机退避指示启动随机退避定时器，随机退避定时器的计时长度为0到该随机退避指示所指示的时间长度内的一个随机时刻，并在该随机退避定时器超时的时候，再次发起随机接入过程。再次发起的随机接入过程可如前述流程中的S402至S405。
通过以上图3和图4所示的流程可以看出，基于多个随机接入分组对应的随机接入参数集合，使得终端能够基于其所对应的随机接入分组，选择相应的一个随机接入参数集合进行随机接入。由于随机接入分组可根据业务类型、网络切片等因此进行划分，因而可以为不同的业务类型、网络切片设置不同的随机接入参数集合，以满足相应业务类型、网络切片的特点和要求，实现了在随机接入过程中，对于触发随机接入的不同事件的差异化区分，提升了终端的体验。
图6示例性地示出了本申请实施例提供的一种随机接入流程。图6所示的流程可适用于前述方案二所描述的场景。该流程也适用于方案三描述的场景中处于连接态或非激活态的终端使用基站通过专有信令发送的随机接入参数集合中的一个随机接入参数集合进行随机接入过程的场景。
如图所示，该流程可包括：
S601：基站通过专有信令向连接态或非激活态的终端发送至少一个随机接入参数集合。
该步骤中，当终端完成随机接入流程，与基站建立RRC连接后，基站可发送RRC连接重配置消息，通过该消息将所述至少一个随机接入参数集合发送给终端。可选地，终端向基站返回RRC连接重配置完成消息。当然，基站也可以通过其他专有信令将所述至少一个随机接入参数集合发送给连接态或非激活态的终端。
所述至少一个随机接入参数集合，可包括以下几种情况：
情况1：多个随机接入分组对应的随机接入参数集合。可选地，该多个随机接入参数集合中包括默认的随机接入分组对应的随机接入参数集合。随机接入分组的划分方式可以与前述实施例相同。通过专有信令发送的多个随机接入参数集合中的各参数的取值，与通过广播消息发送的与随机接入分组对应的随机接入参数集合中的各参数的取值可能不同。
可选地，由于基站可获得终端所接入的PLMN标识，因此基站通过专有信令发送给终端的随机接入参数集合可以只包括该PLMN(即终端当前接入的PLMN)对应的随机接入参数集合。以终端当前接入的PLMN的标识为PLMN ID1为例，表5示例性地示出了PLMN ID1对应的随机接入分组0和随机接入分组1。
表5：同一PLMN对应的随机接入分组的配置信息
Figure PCTCN2018080336-appb-000004
Figure PCTCN2018080336-appb-000005
表5中的“*”表示通配符。
情况2：多个逻辑信道或逻辑信道组对应的随机接入参数集合。一个逻辑信道或逻辑信道组可对应一个随机接入参数集合，也可以多个逻辑信道或逻辑信道组对应一个随机接入参数集合。不同的逻辑信道或逻辑信道组对应的随机接入参数集合中的参数值可以相同也可以不同。
情况3：一个随机接入参数集合。该随机接入参数集合可专用于连接态或非激活态的终端进行随机接入。在基站通过专有信令发送一个随机接入参数集合的情况下，该随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度。进一步地，该随机接入参数集合中还可包括其他参数，比如，可包括以下参数中的一个或任意组合：随机接入前导序列的指示信息、随机接入前导序列占用的时频资源的指示信息、竞争解决定时器的计时时间长度、随机接入最大次数。
S602：连接态或非激活态的终端根据所述至少一个随机接入参数集合中的一个随机接入参数集合，向基站发送随机接入请求，以触发随机接入过程。
该步骤中，触发连接态或非激活态的终端发起随机接入过程的原因有多种，比如，终端处于连接态时，如果有上行数据和/或信令需要发送，但上行失步，则可进行随机接入过程。
图6的S602所触发的随机接入过程包括终端与基站之间的信令交互过程，S602以及所触发的随机接入过程的信令交互与图4所示的信令交互过程类似。
根据S601中基站通过专有信令发送的所述至少一个随机接入参数集合的上述几种情况，终端与基站之间的随机接入的信令交互过程可包括以下几种情况：
情况1：基站通过专有信令发送多个随机接入分组对应的随机接入参数集合，则终端发起的随机接入过程的实现过程可与图4所示的流程相同。
情况2：基站通过专有信令发送多个逻辑信道或逻辑信道组对应的随机接入参数集合，则终端可根据待发送的上行数据和/或信令所使用的逻辑信道或逻辑信道组，选取对应的随机接入参数集合。终端在选择出一个随机接入参数集合后，根据该随机接入参数集合进行的随机接入过程与图4所示流程的相应部分类似，对于S402～405描述中的“随机接入分组”可替换为“逻辑信道或信道组”。
比如，终端发送Msg1消息之前，可根据待发送的上行数据和/或信令所使用的逻辑信道或逻辑信道组确定对应的随机接入参数集合。终端根据该随机接入参数集合中的随机接入前导序列以及该前导序列的时频资源，发送Msg1。进一步地，终端可根据该随机接入参数集合中的随机接入响应时间窗的监视开始时间和/或时间窗长度，启动随机接入响应时间窗，并在该时间窗内监听基站返回的Msg2。
基站接收到Msg1后，可根据终端发送的随机接入前导序列和/或根据该序列占用的时频资源确定出对应的逻辑信道或逻辑信道组，根据该逻辑信道或逻辑信道组对应的Msg3尺寸门限值，为终端分配上行资源，并将该上行资源的指示信息携带于Msg2返回给终端。
再比如，基站可将多个逻辑信道或逻辑信道组对应的多个随机退避指示携带于Msg2中返回给终端。一个或多个逻辑信道或逻辑信道组对应一个随机退避指示。Msg2中的MACCE的格式可如图5所示。在另一种实施例中，Msg2中的MAC CE中携带一个随机退避指 示，每个随机接入逻辑信道或逻辑信道组对应的随机退避指示(随机退避时间)，可根据如下方式计算得到：将MAC CE中包含的随机退避指示作为基准值，乘以该随机接入逻辑信道或逻辑信道组对应的随机接入时间系数，得到该随机接入逻辑信道或逻辑信道组对应的随机退避时间。其中，随机接入时间系数的取值范围可设置为(0,1)，即大于0且小于1。
情况3：基站通过专有信令发送一个随机接入参数集合，则终端根据该随机接入参数集合发起随机接入过程，该随机接入过程与图4所示的流程中的相应部分类似，区别在于：由于用于连接态和非激活态的终端进行随机接入的参数集合只有一个，因此基站和终端均无需执行随机接入参数集合的选择操作。
通过以上描述可以看出，本申请的上述实施例中，基站可向终端发送多个随机接入参数集合，终端在进行随机接入时，可根据该多个随机接入参数集合中的一个进行随机接入，可针对不同场景进行差异化的随机接入过程。
基于相同的技术构思，本申请实施例还提供了一种基站。图7示例性的示出了该基站的结构，该基站可执行图3和图4所示的流程中基站侧实现的流程。该基站可包括：发送模块701、接收模块702。发送模块701可以是发射机，用于发送信息。接收模块702可以是接收机，用于接收信息。在一个例子中，发送模块701可以是无线信号发射机，用于发送无线信号，接收模块702可以是无线信号发射机，用于发射无线信号。进一步地，发送模块701和接收模块702还可以与处理器(未在图中示出)连接，接收模块可将接收到的信息发送给处理器进行处理，发送模块可将处理器处理后的信息进行发送。
发送模块701用于通过广播消息向终端发送多个随机接入参数集合；接收模块702用于接收所述终端的随机接入请求，所述随机接入请求采用所述多个随机接入参数集合中的一个。
可选地，所述多个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合。
可选地，所述多个随机接入参数集合中包括一个默认随机接入分组对应的随机接入参数集合。
可选地，所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；发送模块701还用于：在接收模块702接收所述终端发送的随机接入请求之后，向所述终端返回随机接入响应消息，所述随机接入响应消息中包括为所述终端分配的上行资源的指示信息；所述上行资源是所述基站根据一个随机接入分组对应的调度消息尺寸门限值分配的，该随机接入分组为所述终端发送的随机接入前导序列对应的随机接入分组。
可选地，发送模块701还用于：在接收模块702接收所述终端发送的随机接入请求之后，向所述终端返回随机接入响应，所述随机接入响应中包括所述多个随机接入分组对应的多个随机退避指示。
基于相同的技术构思，本申请实施例还提供了一种基站。图8示例性的示出了该基站的结构，该基站可执行图6所示的流程中基站侧实现的流程。该基站可包括：发送模块801、接收模块802。发送模块801可以是发射机，用于发送信息。接收模块802可以是接收机，用于接收信息。在一个例子中，发送模块801可以是无线信号发射机，用于发送无线信号，接收模块802可以是无线信号发射机，用于发射无线信号。进一步地，发送模块801和接收模块802还可以与处理器(未在图中示出)连接，接收模块可将接收到的信息发送给处 理器进行处理，发送模块可将处理器处理后的信息进行发送。
发送模块801用于通过专有信令向连接态或非激活态的终端发送至少一个随机接入参数集合；接收模块802用于接收所述连接态或非激活态的终端的随机接入请求，所述随机接入请求采用所述至少一个随机接入参数集合中的一个；所述随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度。
可选地，所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；发送模块801还用于：在接收模块802接收所述连接态或非激活态的终端的随机接入请求之后，向所述终端返回随机接入响应，所述随机接入响应中包括为所述终端分配的上行资源的指示信息；所述上行资源是所述基站根据一个随机接入分组对应的调度消息尺寸门限值分配的，该随机接入分组为所述终端发送的随机接入前导序列对应的随机接入分组。
可选地，发送模块801还用于：在所述接收模块接收所述连接态或非激活态的终端的随机接入请求之后，向所述终端返回随机接入响应，所述随机接入响应中包括所述多个随机接入分组或逻辑信道或逻辑信道组对应的多个随机退避指示。
可选地，所述至少一个随机接入参数集合为一个随机接入参数集合；或者，所述至少一个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合；或者，所述至少一个随机接入参数集合为多个逻辑信道或逻辑信道组对应的随机接入参数集合，一个或多个逻辑信道或逻辑信道组对应一个随机接入参数集合。
可选地，所述随机接入参数集合中还包括以下参数中的一个或任意组合：
随机接入前导序列的指示信息；
随机接入前导序列占用的时频资源的指示信息；
竞争解决定时器的计时时间长度；
随机接入最大次数。
基于相同的技术构思，本申请实施例还提供了一种终端。图9示例性的示出了该终端的结构，该终端可执行图3和图4所示的流程中终端侧实现的流程。该终端可包括：接收模块901、发送模块902。发送模块902可以是发射机，用于发送信息。接收模块901可以是接收机，用于接收信息。在一个例子中，发送模块902可以是无线信号发射机，用于发送无线信号，接收模块901可以是无线信号发射机，用于发射无线信号。进一步地，发送模块902和接收模块901还可以与处理器(未在图中示出)连接，接收模块可将接收到的信息发送给处理器进行处理，发送模块可将处理器处理后的信息进行发送。
接收模块901用于接收基站通过广播消息发送的多个随机接入参数集合；发送模块902用于采用所述多个随机接入参数集合中的一个，向所述基站发送随机接入请求。
可选地，所述多个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合。
可选地，所述多个随机接入参数集合中包括一个默认随机接入分组对应的随机接入参数集合。
可选地，还包括确定模块(未在图中示出)，该确定模块也可替换为处理器；接收模块901还用于：在发送模块902向所述基站发送随机接入请求之后，接收所述基站返回的随机接入响应，所述随机接入响应中包括多个随机接入分组对应的多个随机退避指示；所 述确定模块，用于根据随机接入事件确定对应的随机接入分组，根据确定出的随机接入分组从所述多个随机接入分组对应的多个随机退避指示中选取对应的随机退避指示。
基于相同的技术构思，本申请实施例还提供了一种终端。图10示例性的示出了该终端的结构，该终端可执行图6所示的流程中终端侧实现的流程。该终端可包括：接收模块1001、发送模块1002。发送模块1002可以是发射机，用于发送信息。接收模块1001可以是接收机，用于接收信息。在一个例子中，发送模块1002可以是无线信号发射机，用于发送无线信号，接收模块1001可以是无线信号发射机，用于发射无线信号。进一步地，发送模块1002和接收模块1001还可以与处理器(未在图中示出)连接，接收模块可将接收到的信息发送给处理器进行处理，发送模块可将处理器处理后的信息进行发送。
发送模块1002用于在所述终端处于连接态或非激活态时，接收基站通过专有信令发送的至少一个随机接入参数集合；发送模块1002用于在所述终端处于连接态或非激活态时，采用所述至少一个随机接入参数集合中的一个，向所述基站发送随机接入请求；所述随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度。
可选地，还包括确定模块(未在图中示出)，该确定模块也可替换为处理器；所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；所述确定模块用于：根据待发送的上行数据和/或信令使用的逻辑信道或逻辑信道组，确定对应的随机接入参数集合；所述发送模块具体用于，根据确定的随机接入参数集合，向所述基站发送该随机接入参数集合中的随机接入前导序列。
可选地，还包括确定模块(未在图中示出)，该确定模块也可替换为处理器；所述接收模块还用于：在所述发送模块向所述基站发送随机接入请求之后，接收所述基站返回的随机接入响应，所述随机接入响应中包括多个随机接入分组或逻辑信道或逻辑信道组对应的多个随机退避指示；所述确定模块，用于根据随机接入事件确定对应的随机接入分组或逻辑信道或逻辑信道组，根据确定出的随机接入分组或逻辑信道或逻辑信道组，从所述多个随机退避指示中选取对应的随机退避指示。
可选地，所述至少一个随机接入参数集合为一个随机接入参数集合；或者，所述至少一个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合，所述多个随机接入分组与所述连接态或非激活态终端所接入的公共陆地移动网络PLMN相对应；或者，所述至少一个随机接入参数集合为多个逻辑信道或逻辑信道组对应的随机接入参数集合，一个或多个逻辑信道或逻辑信道组对应一个随机接入参数集合。
可选地，所述随机接入参数集合中还包括以下参数中的一个或任意组合：
随机接入前导序列的指示信息；
随机接入前导序列占用的时频资源的指示信息；
竞争解决定时器的计时时间长度；
随机接入最大次数。
基于相同的技术构思，本申请实施例还提供了一种基站。图11示例性的示出了该基站的结构。
如图11所示，该网元包括：通信接口1101、处理器1102以及存储器1103，存储器1103用于存储处理器1102所需执行的程序代码。通信接口1101进行消息交互。处理器1102用于执行存储器所存储的程序代码，具体用于执行前述实施例中基站侧执行的方法。
处理器1102可以是一个中央处理模块(central processing unit，简称CPU)，或者为数字处理模块等等。存储器1103可以是非易失性存储器，比如硬盘(hard disk drive，简称HDD)或固态硬盘(solid-state drive，简称SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，简称RAM)。存储器1103是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。
本申请实施例中不限定上述通信接口1101、处理器1102以及存储器1103之间的具体连接介质。本申请实施例在图11中以存储器1103、处理器1102以及通信接口1101之间通过总线1104连接，总线在图11中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图11中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
基于相同的技术构思，本申请实施例还提供了一种终端。图12示例性的示出了该终端的结构。
如图12所示，该网元包括：通信接口1201、处理器1202以及存储器1203，存储器1203用于存储处理器1202所需执行的程序代码。通信接口1201进行消息交互。处理器1202用于执行存储器所存储的程序代码，具体用于执行前述实施例中终端侧执行的方法。
处理器1202可以是一个中央处理模块(central processing unit，简称CPU)，或者为数字处理模块等等。存储器1203可以是非易失性存储器，比如硬盘(hard disk drive，简称HDD)或固态硬盘(solid-state drive，简称SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，简称RAM)。存储器1203是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。
本申请实施例中不限定上述通信接口1201、处理器1202以及存储器1203之间的具体连接介质。本申请实施例在图12中以存储器1203、处理器1202以及通信接口1201之间通过总线1204连接，总线在图12中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图12中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
本发明实施例还提供了一种计算机可读存储介质，用于存储为执行上述处理器所需执行的计算机软件指令，其包含用于执行上述处理器所需执行的程序。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能 的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。

Claims (24)

  1. 一种通信方法，其特征在于，包括：
    基站通过专有信令向连接态或非激活态的终端发送至少一个随机接入参数集合；
    所述基站接收所述连接态或非激活态的终端的随机接入请求，所述随机接入请求采用所述至少一个随机接入参数集合中的一个；所述随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度。
  2. 如权利要求1所述的方法，其特征在于，所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；
    所述基站接收所述连接态或非激活态的终端的随机接入请求之后，还包括：
    所述基站向所述终端返回随机接入响应，所述随机接入响应中包括为所述终端分配的上行资源的指示信息；所述上行资源是所述基站根据一个随机接入分组对应的调度消息尺寸门限值分配的，该随机接入分组为所述终端发送的随机接入前导序列对应的随机接入分组。
  3. 如权利要求1或2所述的方法，其特征在于，所述基站接收所述连接态或非激活态的终端的随机接入请求之后，还包括：
    所述基站向所述终端返回随机接入响应，所述随机接入响应中包括所述多个随机接入分组或逻辑信道或逻辑信道组对应的多个随机退避指示。
  4. 如权利要求1至3中任一项所述的方法，其特征在于，所述至少一个随机接入参数集合为一个随机接入参数集合；或者，
    所述至少一个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合；或者，
    所述至少一个随机接入参数集合为多个逻辑信道或逻辑信道组对应的随机接入参数集合，一个或多个逻辑信道或逻辑信道组对应一个随机接入参数集合。
  5. 如权利要求1所述的方法，其特征在于，所述随机接入参数集合中还包括以下参数中的一个或任意组合：
    随机接入前导序列的指示信息；
    随机接入前导序列占用的时频资源的指示信息；
    竞争解决定时器的计时时间长度；
    随机接入最大次数；
    调度消息尺寸门限。
  6. 一种通信方法，其特征在于，包括：
    连接态或非激活态的终端接收基站通过专有信令发送的至少一个随机接入参数集合；
    所述连接态或非激活态的终端采用所述至少一个随机接入参数集合中的一个，向所述基站发送随机接入请求；所述随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度。
  7. 如权利要求6所述的方法，其特征在于，所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；
    所述连接态或非激活态的终端采用所述至少一个随机接入参数集合中的一个，向所述基站发送随机接入请求，包括：
    所述连接态或非激活态的终端根据待发送的上行数据和/或信令使用的逻辑信道或逻辑信道组，确定对应的随机接入参数集合；
    所述连接态或非激活态的终端根据确定的随机接入参数集合，向所述基站发送该随机接入参数集合中的随机接入前导序列。
  8. 如权利要求6或7所述的方法，其特征在于，所述向所述基站发送随机接入请求之后，还包括：
    所述终端接收所述基站返回的随机接入响应，所述随机接入响应中包括多个随机接入分组或逻辑信道或逻辑信道组对应的多个随机退避指示；
    所述终端根据随机接入事件确定对应的随机接入分组或逻辑信道或逻辑信道组，根据确定出的随机接入分组或逻辑信道或逻辑信道组，从所述多个随机退避指示中选取对应的随机退避指示。
  9. 如权利要求6至8中任一项所述的方法，其特征在于，所述至少一个随机接入参数集合为一个随机接入参数集合；或者，
    所述至少一个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合，所述多个随机接入分组与所述连接态或非激活态终端所接入的公共陆地移动网络PLMN相对应；或者，
    所述至少一个随机接入参数集合为多个逻辑信道或逻辑信道组对应的随机接入参数集合，一个或多个逻辑信道或逻辑信道组对应一个随机接入参数集合。
  10. 如权利要求6所述的方法，其特征在于，所述随机接入参数集合中还包括以下参数中的一个或任意组合：
    随机接入前导序列的指示信息；
    随机接入前导序列占用的时频资源的指示信息；
    竞争解决定时器的计时时间长度；
    随机接入最大次数；
    调度消息尺寸门限。
  11. 一种基站，其特征在于，包括：
    发送模块，用于通过专有信令向连接态或非激活态的终端发送至少一个随机接入参数集合；
    接收模块，用于接收所述连接态或非激活态的终端的随机接入请求，所述随机接入请求采用所述至少一个随机接入参数集合中的一个；所述随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度。
  12. 如权利要求11所述的基站，其特征在于，所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；
    所述发送模块还用于：
    在所述接收模块接收所述连接态或非激活态的终端的随机接入请求之后，向所述终端返回随机接入响应，所述随机接入响应中包括为所述终端分配的上行资源的指示信息；所述上行资源是所述基站根据一个随机接入分组对应的调度消息尺寸门限值分配的，该随机接入分组为所述终端发送的随机接入前导序列对应的随机接入分组。
  13. 如权利要求11或12所述的基站，其特征在于，所述发送模块还用于：
    在所述接收模块接收所述连接态或非激活态的终端的随机接入请求之后，向所述终端 返回随机接入响应，所述随机接入响应中包括所述多个随机接入分组或逻辑信道或逻辑信道组对应的多个随机退避指示。
  14. 如权利要求11至13中任一项所述的基站，其特征在于，所述至少一个随机接入参数集合为一个随机接入参数集合；或者，
    所述至少一个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合；或者，
    所述至少一个随机接入参数集合为多个逻辑信道或逻辑信道组对应的随机接入参数集合，一个或多个逻辑信道或逻辑信道组对应一个随机接入参数集合。
  15. 如权利要求14所述的基站，其特征在于，所述随机接入参数集合中还包括以下参数中的一个或任意组合：
    随机接入前导序列的指示信息；
    随机接入前导序列占用的时频资源的指示信息；
    竞争解决定时器的计时时间长度；
    随机接入最大次数；
    调度消息尺寸门限。
  16. 一种终端，其特征在于，包括：
    发送模块，用于在所述终端处于连接态或非激活态时，接收基站通过专有信令发送的至少一个随机接入参数集合；
    发送模块，用于在所述终端处于连接态或非激活态时，采用所述至少一个随机接入参数集合中的一个，向所述基站发送随机接入请求；所述随机接入参数集合中包括随机接入响应时间窗的监视开始时间和/或时间窗长度。
  17. 如权利要求16所述的终端，其特征在于，所述随机接入参数集合中还包括随机接入前导序列；所述随机接入请求包括所述随机接入前导序列；
    还包括确定模块，用于根据待发送的上行数据和/或信令使用的逻辑信道或逻辑信道组，确定对应的随机接入参数集合；
    所述发送模块具体用于：根据确定的随机接入参数集合，向所述基站发送该随机接入参数集合中的随机接入前导序列。
  18. 如权利要求16或17所述的终端，其特征在于，还包括确定模块；
    所述接收模块还用于：在所述发送模块向所述基站发送随机接入请求之后，接收所述基站返回的随机接入响应，所述随机接入响应中包括多个随机接入分组或逻辑信道或逻辑信道组对应的多个随机退避指示；
    所述确定模块，用于根据随机接入事件确定对应的随机接入分组或逻辑信道或逻辑信道组，根据确定出的随机接入分组或逻辑信道或逻辑信道组，从所述多个随机退避指示中选取对应的随机退避指示。
  19. 如权利要求16至18中任一项所述的终端，其特征在于，所述至少一个随机接入参数集合为一个随机接入参数集合；或者，
    所述至少一个随机接入参数集合为多个随机接入分组对应的多个随机接入参数集合，一个或多个随机接入分组对应一个随机接入参数集合，所述多个随机接入分组与所述连接态或非激活态终端所接入的公共陆地移动网络PLMN相对应；或者，
    所述至少一个随机接入参数集合为多个逻辑信道或逻辑信道组对应的随机接入参数 集合，一个或多个逻辑信道或逻辑信道组对应一个随机接入参数集合。
  20. 如权利要求16所述的终端，其特征在于，所述随机接入参数集合中还包括以下参数中的一个或任意组合：
    随机接入前导序列的指示信息；
    随机接入前导序列占用的时频资源的指示信息；
    竞争解决定时器的计时时间长度；
    随机接入最大次数；
    调度消息尺寸门限。
  21. 一种基站，其特征在于，包括：存储器以及处理器；
    所述存储器用于存储处理器所需执行的程序代码，所述处理器用于执行所述存储器所存储的程序代码，使所述基站执行如权利要求1至5中任一种方法。
  22. 一种终端，其特征在于，包括：存储器以及处理器；
    所述存储器用于存储处理器所需执行的程序代码，所述处理器用于执行所述存储器所存储的程序代码，使所述终端执行如权利要求6至10中任一种方法。
  23. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行权利要求1至5中任一项所述的方法。
  24. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行权利要求6至10中任一项所述的方法。
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