WO2021057829A1 - 时域资源确定方法、装置、设备及存储介质 - Google Patents

时域资源确定方法、装置、设备及存储介质 Download PDF

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Publication number
WO2021057829A1
WO2021057829A1 PCT/CN2020/117305 CN2020117305W WO2021057829A1 WO 2021057829 A1 WO2021057829 A1 WO 2021057829A1 CN 2020117305 W CN2020117305 W CN 2020117305W WO 2021057829 A1 WO2021057829 A1 WO 2021057829A1
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Prior art keywords
domain resource
time domain
resource allocation
allocation information
control channel
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English (en)
French (fr)
Inventor
胡丹
官磊
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to EP20869305.1A priority Critical patent/EP4024908A4/en
Publication of WO2021057829A1 publication Critical patent/WO2021057829A1/zh
Priority to US17/702,273 priority patent/US12317238B2/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0466—Wireless resource allocation based on the type of the allocated resource the resource being a scrambling code
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • This application relates to the field of communication technology, and in particular to a method, device, device, and storage medium for determining time domain resources.
  • a large number of mobile data multimedia services and various high-bandwidth multimedia services such as Internet Protocol Television (IPTV) and mobile TV (Television, TV) provide highly robust and extremely important communication services, such as disaster situations Under the multicast communication (group communication), public safety networks, etc., put forward higher requirements for broadcast/multicast/multicast services.
  • IPTV Internet Protocol Television
  • group communication multicast communication
  • public safety networks etc.
  • MBMS Multimedia Broadcast Multicast Service
  • the technology of transmitting data from one data source to multiple terminal devices realizes the resource sharing of the core network and the access network, thereby improving the utilization rate of network resources.
  • the MBMS service defined by 3GPP can not only realize the message-type multicast and broadcast of plain text and low rate, but also realize the broadcast and multicast of high-speed multimedia services to provide users with a variety of rich video, audio and multimedia services.
  • the characteristics of broadcast services enable better efficiency in sending information of public interest, which undoubtedly conforms to the trend of future mobile data development and provides better business prospects for the development of communication technology.
  • NR 5G New Radio
  • NR downlink shared physical channel Physical Downlink Shared Channel
  • PDSCH Physical Downlink Shared Channel
  • the time domain resource assignment information field in the physical downlink control channel (Physical Downlink Control Channel, PDCCH) downlink control information (downlink control information, DCI) supports the flexibility of PDSCH scheduling in the time domain. That is, the terminal device obtains the time domain location information of the PDSCH scheduled by the DCI according to the time domain resource allocation information field in the detected PDCCH and DCI.
  • PDCCH Physical Downlink Control Channel
  • DCI downlink control information
  • the terminal device obtains the time domain location information of the PDSCH scheduled by the DCI according to the time domain resource allocation information field in the detected PDCCH and DCI.
  • NR only provides a method for determining time domain resources in a unicast transmission scenario, and does not provide a method for determining the time domain position of the PDSCH in a multicast/broadcast/multicast transmission scenario.
  • This application provides a method, device, device, and storage medium for determining time domain resources, so that the time domain position of the PDSCH can be determined in a multicast/broadcast/multicast transmission scenario.
  • this application provides a method for determining time domain resources, including: obtaining a group-radio network temporary identifier G-RNTI; detecting the first downlink control channel in a common search space, and the G-RNTI is used for the first downlink control Channel scrambling; acquiring first time domain resource allocation information, the first time domain resource allocation information has an association relationship with G-RNTI; determining the first downlink data according to the first time domain resource allocation information and the first downlink control channel Time domain resources of the channel.
  • the time domain position of the PDSCH can be determined in the scenario of multicast/broadcast/multicast transmission.
  • the broadcast/multicast/multicast transmission requirements of the terminal equipment can be met, and such broadcast/multicast/multicast can achieve the effect of saving transmission resources and effectively avoiding transmission congestion.
  • the method further includes: acquiring a dedicated wireless network temporary identifier RNTI of the terminal device; detecting the second downlink control channel in a search space dedicated to the terminal device, and the dedicated RNTI is used for scrambling the second downlink control channel; and acquiring the second time Domain resource allocation information, the second time domain resource allocation information has an association relationship with the dedicated RNTI; the time domain resource of the second downlink data channel is determined according to the second time domain resource allocation information and the second downlink control channel; wherein, the second downlink control The HARQ process number of the hybrid automatic repeat request in the channel is the same as the HARQ process number in the first downlink control channel.
  • the network device determines that there are fewer terminal devices that need to be retransmitted, it can use unicast retransmission.
  • the so-called unicast retransmission means that the terminal equipment adopts the time-domain resource allocation information corresponding to the RNTI dedicated to the terminal equipment, which can provide the specific adaptive resource configuration of the terminal equipment, and provide link adaptive transmission for a single terminal equipment, thereby improving the broadcast/ The reliability of multicast retransmission improves the success rate of retransmission.
  • determining the time domain resource of the first downlink data channel according to the first time domain resource allocation information and the first downlink control channel includes: according to the value of the time domain resource allocation information field on the first downlink control channel And the first time domain resource allocation information to determine the time domain resource of the first downlink data channel.
  • the first time domain resource allocation information is determined by the network device through any one of pre-definition, system message configuration, or high-level signaling configuration.
  • the first time domain resource allocation information includes at least one of the following: a time unit offset value, a start and length indicator value SLIV of the first downlink data channel, and a mapping type of the first downlink data channel; wherein, The time unit offset value is the offset between the second time unit and the first time unit, the first time unit is the time unit for receiving the first downlink control channel, and the second time unit is the time unit for receiving the first downlink data channel .
  • time domain resource determination method executed by the network equipment side will be provided below, as well as the time domain resource determination device, device, chip, storage medium, and computer program product.
  • the effect please refer to the corresponding effect of the above time domain resource determination method. This will not be repeated here.
  • this application provides a method for determining time domain resources, including: configuring a group-radio network temporary identifier G-RNTI; sending the first downlink control channel, and the G-RNTI is used for the scrambling of the first downlink control channel ; Send the first time domain resource allocation information to the terminal device, and the first time domain resource allocation information has an association relationship with the G-RNTI.
  • the method further includes: configuring a dedicated wireless network temporary identification RNTI of the terminal device; sending a second downlink control channel to the terminal device, where the dedicated RNTI is used for scrambling the second downlink control channel; and sending the second time domain to the terminal device
  • the resource allocation information, the second time domain resource allocation information and the dedicated RNTI have an association relationship; wherein, the HARQ process number of the hybrid automatic repeat request in the second downlink control channel is the same as the HARQ process number in the first downlink control channel.
  • the first time domain resource allocation information is determined by the network device through any one of pre-definition, system message configuration, or high-level signaling configuration.
  • the first time domain resource allocation information includes at least one of the following: a time unit offset value, a start and length indicator value SLIV of the first downlink data channel, and a mapping type of the first downlink data channel.
  • the time unit offset value is the offset between the second time unit and the first time unit
  • the first time unit is the time unit for receiving the first downlink control channel
  • the second time unit is the time unit for receiving the first downlink data channel. Time unit.
  • this application provides a time domain resource determination device, including:
  • the first acquiring module is used to acquire the group-radio network temporary identifier G-RNTI.
  • the first detection module is used for detecting the first downlink control channel in the common search space, and the G-RNTI is used for scrambling the first downlink control channel.
  • the second acquiring module is configured to acquire the first time domain resource allocation information, and the first time domain resource allocation information has an association relationship with the G-RNTI.
  • the first determining module is configured to determine the time domain resource of the first downlink data channel according to the first time domain resource allocation information and the first downlink control channel.
  • this application provides an apparatus for determining time domain resources, including:
  • the first configuration module is used to configure the group-radio network temporary identifier G-RNTI.
  • the first sending module is used for sending the first downlink control channel
  • the G-RNTI is used for scrambling the first downlink control channel
  • the second sending module is configured to send the first time domain resource allocation information to the terminal device, and the first time domain resource allocation information has an association relationship with the G-RNTI.
  • this application provides a terminal device, including: a memory and a processor.
  • the memory is used to store computer instructions, so that the processor executes the computer instructions, so as to implement the time domain resource determination method as described in the first aspect or an optional manner of the first aspect.
  • the present application provides a network device, including: a memory and a processor.
  • the memory is used to store computer instructions, so that the processor executes the computer instructions to implement the time domain resource determination method according to the second aspect or an optional manner of the second aspect.
  • the present application provides a chip, which is used to implement the time domain resource determination method as described in the first aspect or an optional manner of the first aspect.
  • the present application provides a chip, which is used to implement the time domain resource determination method as described in the second aspect or an optional manner of the second aspect.
  • the present application provides a computer storage medium, including: computer-executable instructions, which are used to implement the time-domain resource determination method as described in the first aspect or an optional manner of the first aspect.
  • the present application provides a computer storage medium, including: computer-executable instructions, which are used to implement the time-domain resource determination method as described in the second aspect or an optional manner of the second aspect.
  • this application provides a computer program product, including: computer-executable instructions, which are used to implement the time-domain resource determination method as described in the first aspect or an optional manner of the first aspect.
  • the present application provides a computer program product, including: computer-executable instructions, the computer-executable instructions are used to implement the time domain resource determination method as described in the second aspect or an optional manner of the second aspect.
  • this application provides a method for determining time domain resources, including: a terminal device receives system information, the system information is used to carry (SC-)MCCH information, and the (SC-)MCCH information includes: (SC) -) MCCH-related time domain resource allocation information.
  • the terminal device detects the third downlink control channel in the common search space.
  • the terminal device determines the time domain resource of the third downlink data channel according to the time domain resource allocation information related to the (SC-)MCCH and the third downlink control channel (optional).
  • the terminal device receives broadcast data on the third downlink data channel.
  • network equipment can configure (SC-)MCCH-related time domain resource allocation information to terminal equipment through system information, so that broadcast/multicast/multicast transmission does not need to use unicast transmission of time domain resource allocation information, ensuring broadcast/multicast transmission. Effective transmission of broadcast/multicast.
  • this application provides a method for determining time domain resources, including: a terminal device receives system information, the system information is used to carry (SC-)MCCH information, and the (SC-)MCCH information includes: (SC -) MTCH-related time domain resource allocation information.
  • the terminal device detects the fourth downlink control channel in the common search space.
  • the terminal device determines the time domain resource of the fourth downlink data channel according to the time domain resource allocation information related to the (SC-)MTCH and the fourth downlink control channel (optional).
  • the terminal device receives broadcast data on the fourth downlink data channel.
  • network equipment can configure (SC-)MTCH-related time domain resource allocation information to terminal equipment through system information, so that broadcast/multicast/multicast transmission does not need to use unicast transmission of time domain resource allocation information, ensuring broadcast/multicast transmission. Effective transmission of broadcast/multicast.
  • this application provides a method for determining time-domain resources, including: a terminal device receives (SC-)MCCH information, and the (SC-)MCCH information carries (SC-)MTCH-related time-domain resource allocation information.
  • the terminal device detects the fifth downlink control channel in the common search space.
  • the terminal device determines the time domain resource of the fifth downlink data channel according to the (SC-)MTCH-related time domain resource allocation information and the fifth downlink control channel (optional).
  • the terminal device receives broadcast data on the fifth downlink data channel.
  • network equipment can configure (SC-)MTCH-related time domain resource allocation information to terminal equipment through (SC-)MCCH information, so that broadcast/multicast/multicast transmission does not need to use unicast transmission of time domain resource allocation information, ensuring Effective transmission of broadcast/multicast/multicast.
  • this application provides a method, device, device, and storage medium for determining time domain resources.
  • the network device configures the terminal device with first time domain resource allocation information, and the first time domain resource allocation information meets the broadcast/multicast/multicast transmission requirements of the terminal device.
  • the network device can also configure the second time domain resource allocation information to the terminal device, thereby not only meeting the unicast transmission demand of the terminal device, but also meeting the broadcast/multicast/multicast transmission demand of the terminal device.
  • This kind of broadcast/multicast/multicast can save transmission resources and effectively avoid transmission congestion.
  • the network device determines that there are fewer terminal devices that need to be retransmitted, it can use unicast retransmission.
  • the so-called unicast retransmission means that the terminal equipment adopts the time-domain resource allocation information corresponding to the RNTI dedicated to the terminal equipment, which can provide the specific adaptive resource configuration of the terminal equipment, and provide link adaptive transmission for a single terminal equipment, thereby improving the broadcast/ The reliability of multicast retransmission improves the success rate of retransmission.
  • Figure 1 is a schematic diagram of the MBSFN service area
  • Figure 2 is a schematic diagram of channel mapping involved in MBSFN
  • Figure 3 is a schematic diagram of the relationship between MBSFN subframes and unicast subframes under FDD;
  • Figure 4 is a schematic diagram of the channel mapping relationship of SC-PTM
  • Figure 5 is a schematic diagram of the SC-PTM subframe structure
  • FIG. 6 is a schematic diagram of a mobile communication system provided by an embodiment of this application.
  • FIG. 7 is an interaction flowchart of a method for determining a time domain resource provided by an embodiment of this application.
  • FIG. 8 is an interaction flowchart of a method for determining a time domain resource provided by another embodiment of this application.
  • FIG. 9 is an interaction flowchart of a method for determining time domain resources provided by still another embodiment of this application.
  • FIG. 10 is an interaction flowchart of a method for determining time domain resources according to another embodiment of this application.
  • FIG. 11 is an interaction flowchart of a method for determining time domain resources provided by still another embodiment of this application.
  • FIG. 12 is a schematic diagram of a time domain resource determining apparatus provided by an embodiment of this application.
  • FIG. 13 is a schematic diagram of an apparatus for determining time domain resources according to an embodiment of this application.
  • FIG. 14 is a schematic diagram of a terminal device provided by an embodiment of this application.
  • FIG. 15 is a schematic diagram of a network device provided by an embodiment of this application.
  • the International Telecommunication Union has defined three types of application scenarios for the fifth generation (5Generation, 5G) mobile communication system and future mobile communication systems: Enhanced Mobile Broadband (eMBB), high reliability Low Latency Communication (Ultra Reliable and Low Latency Communications, URLLC) and Massive Machine Type Communications (mMTC).
  • eMBB Enhanced Mobile Broadband
  • URLLC Ultra Reliable and Low Latency Communications
  • mMTC Massive Machine Type Communications
  • Typical eMBB services include: ultra-high-definition video, augmented reality (AR), virtual reality (VR), etc.
  • the main characteristics of these services are large data transmission volume and high transmission rate.
  • Typical URLLC businesses include wireless control in industrial manufacturing or production processes, motion control of unmanned vehicles and drones, and tactile interaction applications such as remote repairs and remote surgery. The main feature of these services is that they require ultra-high reliability.
  • Typical mMTC services include: smart grid distribution automation, smart cities, etc.
  • the main features are the huge number of networked devices, the small amount of transmitted data, and the data insensitive to transmission delay.
  • These mMTC terminals need to meet low cost and very long standby time. The need for time.
  • a large number of mobile data multimedia services and various high-bandwidth multimedia services such as IPTV and mobile TV, provide highly robust and extremely important communication services, such as: multicast communication in disaster situations, public safety networks, etc.
  • Broadcast/broadcast/multicast services put forward higher demands.
  • These mobile data multimedia services require multiple users to receive the same data at the same time. Compared with general data services, they have the characteristics of large data volume, long duration, and time delay sensitivity.
  • 3GPP has proposed the multimedia broadcast and multicast service MBMS, which supports the provision of multicast/broadcast/multicast networks in cellular systems.
  • the MBMS service defined by 3GPP can not only realize the message-type multicast and broadcast of plain text and low rate, but also realize the broadcast and multicast of high-speed multimedia services to provide users with a variety of rich video, audio and multimedia services.
  • the characteristics of broadcast services enable better efficiency in sending information of public interest, which undoubtedly conforms to the trend of future mobile data development and provides better business prospects for the development of communication technology.
  • MMSFN Multicast/Broadcast Single Frequency Network
  • SC-PTM Single Cell Point to Multipoint
  • FIG. 1 is a schematic diagram of the MBSFN service area.
  • the MBMS service area is usually composed of multiple Multimedia Broadcast Single Frequency Network (MBSFN) areas, and terminal equipment located in the same MBMS service area will receive To the same content, this communication method can be called a multi-cell broadcast method.
  • Multi-cell broadcast means that multiple cells will transmit the same information, and terminal equipment can use this to effectively use signal power from multiple cells, thereby greatly improving coverage.
  • the signal received by the terminal equipment is as received from a single cell and has experienced Multipath transmission.
  • FIG. 2 is a schematic diagram of channel mapping involved in MBSFN.
  • MBSFN supports two logical channels, namely Multicast Traffic Channel (MTCH) and Multicast Control Channel (MCCH).
  • MTCH is used to transmit MBMS user data. If one MBSFN area provides multiple MBMS services, multiple MTCHs can be configured.
  • MCCH is used to transmit control information related to receiving MBMS services, including subframe allocation and modulation coding style of each multicast channel (Multicast Channel, MCH).
  • MCH Multicast Channel
  • Each MBSFN has only one MCCH, and one MCCH corresponds to only one MBSFN area.
  • the logical channels MCCH and MTCH will be multiplexed onto the transport channel MCH.
  • the transmission format and resource allocation of the MCH are determined by the Multi-cell/Multicast Coordination Entity (MCE), and are sent to the terminal device through the MCCH.
  • MCE Multi-cell/Multicast Coordination Entity
  • the MCH will be mapped on a physical multicast channel (Physical Multicast Channel, PMCH) and transmitted on the MBSFN subframe.
  • PMCH Physical Multicast Channel
  • the transmission of MCH is MBSFN area specific, not cell specific, so the scrambling of PMCH is also MBSFN area specific.
  • LTE Long Term Evolution
  • a subframe is 1 ms and consists of two time slots.
  • An MBSFN subframe consists of two parts: the control area and the MBSFN area.
  • FIG. 3 is a schematic diagram of the relationship between MBSFN subframes and unicast subframes under Frequency Division Duplexing (FDD). As shown in Figure 3, under FDD, unicast subframes are subframes (Subframe, SF). , SF3, SF5-8, and MBSFN subframes are SF1, SF2, SF4, and SF9.
  • FDD Frequency Division Duplexing
  • SC-PTM Single-cell MBMS research is introduced in the evolution of long-term evolution (LTE-Advanced, LTE-A). Unlike MBSFN, SC-PTM only sends MBMS information to cells that expect to receive the MBMS information.
  • LTE-A long-term evolution
  • SC-PTM only sends MBMS information to cells that expect to receive the MBMS information.
  • the process for terminal equipment to receive broadcast messages using SC-PTM is as follows:
  • Step 1 The terminal device receives the System Information Block (SIB) 20 to obtain the information of the Single Cell-Multicast Control Channel (SC-MCCH).
  • SIB System Information Block
  • SC-MCCH Single Cell-Multicast Control Channel
  • Step 2 The terminal device receives the Single Cell-Multicast Control Channel (SC-MCCH), where the SC-MCCH is represented by the Single Cell-Radio Network Tempory Identity, SC-RNTI ) Scrambling, which is used to carry SC-PTM configuration information.
  • SC-MCCH Single Cell-Multicast Control Channel
  • SC-RNTI Single Cell-Radio Network Tempory Identity
  • the SC-MCCH transmission method the network equipment sends the SC-MCCH scheduling information on the PDCCH of the unicast subframe where the SC-MCCH is located, and the network equipment sends the SC-MCCH on the PDSCH of the unicast subframe.
  • the SC-MCCH includes: MBMS The mapping relationship between the service’s temporary mobile group identity (Temporary Mobile Group Identity, TMGI) and the SC-PTM service’s group-radio network temporary identity (G-RNTI) on the PDCCH, and where the SC-PTM service is located Time domain location information.
  • TMGI temporary mobile group identity
  • G-RNTI group-radio network temporary identity
  • Each MBMS service can be uniquely identified by the corresponding TMGI, which can include a public land mobile network (Public Land Mobile Network, PLMN) identifier plus a service identifier.
  • PLMN Public Land Mobile Network
  • Step 3 The terminal device receives the Single cell-Multicast Traffic Channel (SC-MTCH) according to the SC-MCCH, and the SC-MTCH is scrambled by the G-RNTI.
  • Figure 4 is a schematic diagram of the channel mapping relationship of SC-PTM. As shown in Figure 4, the logical channels SC-MCCH and SC-MTCH are mapped on the downlink shared channel (DL-SCH) of the transport channel, and DL-SCH is mapped to On PDSCH.
  • the G-RNTI is used to scramble the cyclic redundancy check (CRC) of the PDCCH.
  • the PDCCH is used to schedule the PDSCH that carries SC-MTCH information.
  • Figure 5 is a schematic diagram of the SC-PTM subframe structure. The time-frequency domain distribution of PDCCH, multicast PDSCH and unicast PDSCH is shown in Figure 5.
  • NR supports time slot and non-slot type scheduling, and the time domain position and time domain length of NR PDSCH in the time slot has great flexibility.
  • the terminal device obtains the time domain location information of the PDSCH scheduled by the DCI according to the time domain resource allocation information field in the detected PDCCH and DCI.
  • the time domain location information includes: the time slot where the PDSCH is located, the time domain length of the PDSCH, and the initial orthogonal frequency division multiplexing (OFDM) symbol index of the PDSCH in the time slot.
  • OFDM orthogonal frequency division multiplexing
  • the terminal device can obtain the PDSCH location information from the row with the index number m+1 in one PDSCH time domain resource allocation (Applicable PDSCH Time Domain Resource Allocation) information.
  • the terminal device can obtain time-domain resource allocation information through one of three ways: predefined, system messages, and high-level signaling. Different situations include the type of RNTI scrambled by the terminal device to detect DCI, the type of search space in which it is located, and the high-level parameters configured by the terminal device.
  • the predefined allocation information can be used to obtain the time domain position of the PDSCH carrying system messages; and for the terminal equipment in the radio resource control (Radio Resource Control, RRC) connection state, it can pass through the higher layer
  • the parameter pdsch-TimeDomainAllocationList in the signaling pdsch-Config obtains the allocation information.
  • C-RNTI Cell-RadioNetworkTemporaryIdentifier
  • MCS-C-RNTI Modulation and Coding Scheme-Cell-RadioNetworkTemporaryIdentifier
  • CS-RNTI Configured Scheduling RNTI
  • C-RNTI, MCS-C-RNTI and CS-RNTI are all dedicated RNTIs configured for terminal equipment, so the PDSCH time domain resource allocation information of each terminal equipment is configured independently and may be different. Moreover, the PDSCH time domain resource allocation information configured by multiple terminal devices may not have common PDSCH time domain resource allocation information.
  • the terminal device is not configured with the high-level signaling pdsch-Config or the parameter pdsch-TimeDomainAllocationList, but the system message pdsch-ConfigCommon includes the parameter pdsch-TimeDomainAllocationList, then the PDSCH time domain resource allocation information is obtained according to this parameter, and the time domain resource allocation information It is the public time domain resource allocation information, that is, it can be applied to all terminal devices in the cell.
  • the specific PDSCH time domain resource allocation method is shown in Table 1. Among them, default A (that is, Table 2 and Table 3), default B (that is, Table 4), and default C (that is, Table 5) respectively represent three time-domain resource allocations determined by a predefined way. Define table A, and table 3 is a predefined table A of the extended cyclic prefix.
  • each terminal device detects the PDCCH in a dedicated search space, thereby determining the time domain resource of the PDSCH according to the high-level parameters configured for a specific terminal device, which will cause different terminal devices to determine the time domain of the PDSCH
  • the resources are not the same, so it is impossible to send multicast/broadcast/multicast services on a unified time domain resource. Therefore, the time-domain resource allocation method of the unicast data channel under the NR architecture is also not suitable for multicast/broadcast/multicast services.
  • the network device configures the terminal device with time domain resource allocation information for multicast/broadcast/multicast service transmission.
  • the time domain resource allocation information is the network device.
  • the additional configuration time domain resource allocation information is different from the standard pre-defined PDSCH time domain resource allocation information in Tables 2 to 5, and is independent of the high-level parameter pdsch-Config including the PDSCH time domain resource allocation indicated by the pdsch-Time Domain Allocation List
  • the information and system message pdsch-Config Common includes PDSCH time domain resource allocation information indicated by pdsch-Time Domain Allocation List.
  • the time-domain resource allocation information may be a time-domain resource allocation table, or a row in a time-domain resource allocation table, or a time-domain resource allocation set, which is not limited in this application.
  • the time domain resource allocation information in this application may be pre-configured by the network device for the terminal device. Based on this, the time domain resource allocation information is stored on both sides of the terminal device and the network device. Or, when the terminal device needs to use the time domain resource allocation information, the network device configures the time domain resource allocation information for the terminal device in real time.
  • FIG. 6 is a schematic diagram of a mobile communication system provided by an embodiment of this application.
  • the mobile communication system includes a core network device 610, a network device 620, and at least one terminal.
  • Devices terminal device 630 and terminal device 640 as shown in FIG. 6).
  • the terminal device is connected to the network device in a wireless manner, and the network device is connected to the core network device in a wireless or wired manner.
  • the core network equipment and the network equipment can be separate and different physical equipment, or they can integrate the functions of the core network equipment and the logical functions of the network equipment on the same physical device, or it can be a physical device that integrates part of the core network.
  • the terminal device can be a fixed location, or it can be movable.
  • Fig. 6 is only an exemplary system diagram.
  • the system may also include other network equipment, such as wireless relay equipment and wireless backhaul equipment, which is not shown in Fig. 6. This application does not limit the number of core network equipment, network equipment, and terminal equipment included in the mobile communication system.
  • Network equipment An entity on the network side that is used to transmit or receive signals.
  • the network equipment involved in this application can be a base station (BTS) in Global System of Mobile Communications (GSM) or Code Division Multiple Access (CDMA), or it can be a broadband code
  • the base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA) can also be the evolved base station (evolved NodeB, eNB) in LTE or enhanced Long Term Evolution (eLTE), Or it can be the next generation-evolved NodeB (ng-eNB), it can also be an Access Point (AP) or a relay station in a wireless local area network (Wireless Local Area Networ, WLAN), or it can be 5G
  • the gNB in NR is not limited here.
  • Terminal device is an entity on the user side that is used to receive or transmit signals.
  • the terminal device may also be called a terminal, a user equipment (UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal, MT), and so on.
  • Terminal devices can be mobile phones, tablets, computers with wireless transceiver functions, virtual reality (VR) terminal devices, augmented reality (Augmented Reality, AR) terminal devices, industrial control (industrial control) ), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, wireless terminals in smart grid (smart grid), transportation safety (transportation safety) Wireless terminals, wireless terminals in smart cities, wireless terminals in smart homes, and so on.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.
  • Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, drones, balloons, and satellites.
  • the embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.
  • Fig. 7 is an interaction flow chart of a method for determining time domain resources according to an embodiment of the application.
  • the method involves network elements including terminal equipment and network equipment. As shown in Fig. 7, the method includes the following steps:
  • Step S701 The network device configures the G-RNTI to the terminal device.
  • this embodiment can be applied to the following scenario: For the terminal equipment in the RRC connected state, it is configured with a dedicated RNTI for the terminal equipment (that is, a dedicated RNTI for unicast transmission, as shown in C in the last row of Table 1. -RNTI, MCS-C-RNTI, CS-RNTI), it is also configured with G-RNTI for broadcast/multicast/multicast transmission. Based on this, the terminal device can receive unicast transmission and broadcast transmission. It should be understood that the G-RNTI here may also be a special identity (Identity, ID) or RNTI, which is associated with the first downlink control channel.
  • ID Identity
  • step S701 as follows:
  • the terminal device after the terminal device is turned on, it accesses a cell by performing cell search and random access procedures. At this time, the network device and the terminal device establish a connection, and the terminal device enters the RRC connection state.
  • the terminal equipment in the RRC connected state is configured with G-RNTI and a dedicated RNTI for the terminal equipment. It should be understood that the configuration of the G-RNTI and the dedicated RNTI for the terminal device may also be in other scenarios, for example, in a scenario where the terminal device performs cell handover, the network device may configure the G-RNTI and the dedicated RNTI for the terminal device to the terminal device.
  • the G-RNTI is used to scramble the first downlink control channel, and the network equipment configures the same G-RNTI for a group of terminal equipment receiving the same broadcast service through high-level signaling or system information.
  • the broadcast service here can also be a multicast service or a multicast service.
  • the first downlink control channel is a downlink control channel for scheduling broadcast/multicast/multicast transmission, for example, a PDCCH for scheduling broadcast/multicast/multicast transmission, and the first downlink control channel is used for scheduling the first downlink A data channel.
  • the first downlink data channel may be used to carry broadcast/multicast/multicast transmission.
  • the terminal equipment dedicated RNTI is used to scramble the second downlink control channel.
  • the terminal equipment can detect the second downlink control channel in a dedicated search space or a common search space.
  • the second downlink control channel is a downlink control channel for scheduling unicast transmission.
  • it is a PDCCH for scheduling unicast transmission
  • the second downlink control channel is used for scheduling a second downlink data channel
  • the second downlink data channel may be a PDSCH for unicast transmission.
  • the RNTI dedicated to the terminal equipment may be C-RNTI, MCS-C-RNTI, or CS-RNTI, and these RNTIs are dedicated RNTIs of the terminal equipment, which is not limited in this application.
  • first downlink control channel and the second downlink control channel can be divided into different ways, which can be based on different time-frequency resources, or based on different logical locations, or based on different tree nodes. Or aggregation level to divide.
  • the so-called G-RNTI used to scramble the first downlink control channel may mean that a CRC generated according to the DCI needs to be attached after the DCI on the first downlink control channel, and the G-RNTI is scrambled on the CRC.
  • the so-called terminal equipment dedicated RNTI is used to scramble the second downlink control channel, which means that after the DCI on the second downlink control channel, a CRC generated according to the DCI needs to be attached, and the CRC is scrambled on the terminal equipment dedicated RNTI . Therefore, DCIs with different functions use different RNTIs.
  • Step S702 The terminal device detects the first downlink control channel in the common search space.
  • Step S703 The network device sends the first time domain resource allocation information to the terminal device, where the first time domain resource allocation information has an association relationship with the G-RNTI.
  • the first time domain resource allocation information is used to determine the time domain resource allocation for broadcast/multicast/multicast transmission of the PDSCH.
  • the second time domain resource allocation information is used to determine the time domain resource allocation for unicast transmission of the PDSCH, and the terminal device may be configured with the first time domain resource allocation information and the second time domain resource allocation information at the same time.
  • the so-called association between the first time domain resource allocation information and G-RNTI means that the G-RNTI is used to scramble the first downlink control channel, and the first downlink control channel is used to schedule the first downlink data channel , And the first downlink control channel and the first time domain resource allocation information may be used to determine the time domain resource of the first downlink data channel.
  • the second time domain resource allocation information and the dedicated RNTI of the terminal device also have an association relationship.
  • the association relationship refers to that the dedicated RNTI of the terminal device is used to scramble the second downlink control channel. It is used to schedule the second downlink data channel, and the second downlink control channel and the second time domain resource allocation information can be used to determine the time domain resource of the second downlink data channel.
  • the network device may allocate the first time domain resource allocation information and the second time domain resource allocation information to the terminal device in the following optional manners:
  • the network device configures special (that is, additional) first time domain resource allocation information for broadcast/multicast/multicast, that is, the first time domain resource allocation information is not the time domain resource allocation information in unicast transmission , Different from the standard predefined PDSCH time domain resource allocation information in Tables 2 to 5, and independent of the high-level parameters pdsch-Config includes PDSCH time domain resource allocation information represented by pdsch-Time Domain Allocation List and the system message pdsch-Config Common Contains PDSCH time domain resource allocation information indicated by pdsch-Time Domain Allocation List. The network device configures the second time domain resource allocation information for the terminal device through high-level signaling.
  • the network device can configure the second downlink control channel related to the terminal device-specific RNTI through RRC signaling.
  • Time domain resource allocation information may be a PDSCH time-domain resource allocation table.
  • the PDSCH time-domain resource allocation table consists of several rows.
  • the information in each row includes: (1) Time offset value K0, if the terminal device is in the time unit n When the second downlink control channel is received, and the second downlink data channel is received in time unit n+k, the time offset value is k; (2) The start and length indicator value of the second downlink data channel (Start and Length) Indicator Value, SLIV); (3) The mapping type of the second downlink data channel.
  • the time domain resource allocation information field carried on the second downlink control channel scrambled by the terminal equipment dedicated RNTI is used to indicate a line in the second time domain resource allocation information as the time domain for sending the second downlink data channel scheduled by it Resources.
  • the terminal equipment also obtains the first time domain resource allocation information.
  • the G-RNTI is used to scramble the CRC of the first downlink control channel.
  • the time domain resources occupied by the first downlink data channel transmission are allocated through the first time domain resource allocation.
  • the information is ok.
  • the network device may configure the first time domain resource allocation information to the terminal device through any of pre-definition, system message configuration, or high-level signaling configuration.
  • the first time-domain resource allocation information may be a time-domain resource allocation table.
  • the time-domain resource allocation table has several rows, and each row includes at least one of the following information:
  • Time offset value K0 If the terminal device receives the first downlink control channel in time unit n (that is, the first time unit), it receives the first downlink control channel in time unit n+K0 (that is, the second time unit). If the data channel is running, the time offset value is K0.
  • the terminal device can obtain the index value S of the start OFDM symbol of the first downlink data channel in the time unit according to the SLIV value, and the time domain length L of the first downlink data channel, where the first downlink data channel is from The OFDM symbol with index S starts to occupy L consecutive OFDM symbols.
  • the calculation formula of SLIV value is as follows:
  • the point (2) may be replaced with: the index value S of the start symbol of the first downlink data channel in the time unit and the time domain length value L.
  • mapping type of the first downlink data channel Type A and Type B.
  • other mapping types may also be included, which is not limited in this application.
  • the value ranges of the parameters S, L, and S+L are different to support different types of time-domain scheduling.
  • the time domain length L corresponding to the first downlink data channel may be 2, 4, and 7.
  • calling the first downlink data channel is valid only when the corresponding parameters S, L, and S+L are within the corresponding value range.
  • the time unit may be composed of N OFDM symbols, and N is an integer greater than or equal to 1.
  • the time unit is a time slot, and the time slot is composed of 14 OFDM symbols.
  • the time unit is a mini-slot, and the number of OFDM symbols contained in a mini-slot is less than 14.
  • the network device configures the first time domain resource allocation information for broadcast/multicast/multicast transmission, where the first time domain resource allocation information is the time domain resource allocation information common to the cell in unicast transmission, such as system
  • the message pdsch-Config Common includes PDSCH time domain resource allocation information indicated by pdsch-Time Domain Allocation List, and the network device configures the second time domain resource allocation information for the terminal device through high-level signaling.
  • the terminal device can configure the first time domain resource allocation information to the terminal device through system message configuration or high-level signaling configuration.
  • the first time domain resource allocation information is the time domain resource allocation table common to the cell in unicast transmission, that is, all the cells in the cell.
  • the terminal equipment can use the first time domain resource allocation information to determine the time domain resource of the first downlink data channel.
  • the time-domain resource allocation information included in each row of the table is consistent with that described in Option 1, which will not be repeated here.
  • Optional method 3 The network device configures the first time domain resource allocation information for broadcast/multicast/multicast transmission through a predefined way, and the first time domain resource allocation information is a time domain configured for unicast transmission through a predefined way.
  • the network device configures the second time domain resource allocation information for the terminal device through high-level signaling.
  • the network device selects one from multiple predefined time-domain resource allocation tables, and uses it as the first time-domain resource allocation information.
  • the time-domain resource allocation information included in each row of the table is consistent with that described in Option 1, which will not be repeated here.
  • Step S704 The terminal device determines the time domain resource of the first downlink data channel according to the first time domain resource allocation information and the first downlink control channel.
  • Step S704 can also be understood as: the terminal device determines the time domain of the first downlink data channel according to the first time domain resource allocation information, the first downlink control channel, and the association relationship between the first time domain resource allocation information and the G-RNTI. Resources.
  • the terminal device detects the first downlink control channel in the common search space. Assuming that the value of the time-domain resource allocation information field on the first downlink control channel is m, and the first time-domain resource allocation information is a time-domain resource allocation table, the terminal device can obtain the index number from the time-domain resource allocation table as m.
  • the time domain resource of the first downlink data channel is determined in the row of +1, that is, the position of the time domain resource of the first downlink data channel is determined.
  • FIG. 8 is an interaction flowchart of a method for determining time domain resources according to another embodiment of the application.
  • the method involves network elements including: terminal equipment and network equipment.
  • the method further includes The following steps:
  • Step S705 The network device configures the terminal device's dedicated RNTI to the terminal device.
  • the network device configures the terminal device's dedicated RNTI for the terminal device through high-level signaling.
  • Step S706 The terminal device detects the second downlink control channel in the search space dedicated to the terminal device.
  • Step S707 The network device sends the second time domain resource allocation information to the terminal device.
  • step S707 can be executed before step S705, or can be executed between step S705 and step S706, or can be executed simultaneously with step S705, which is not limited in this application.
  • Step S708 The terminal device determines the time domain resource of the second downlink data channel according to the second time domain resource allocation information and the second downlink control channel.
  • step S705 to step S708 can be applied to the following scenario: the terminal device receives broadcast data on the first downlink data channel.
  • the network device can use the second downlink data channel to retransmit the broadcast data.
  • the technical solution provided by this embodiment is not only applicable to this application scenario.
  • the terminal device determines that the reception of broadcast data fails, or the terminal device determines that it needs to send feedback information to indicate that the terminal device fails to receive the broadcast data.
  • the terminal device may send feedback information to the network device to indicate that the terminal device fails to receive the broadcast data. Or, when the terminal device does not receive the broadcast data, the feedback information may not be sent to the network device. When the network device does not receive the feedback information within a preset time, it is considered that the terminal device has not received the broadcast data.
  • the network device can use unicast transmission to retransmit the above-mentioned broadcast data. Because unicast transmission can provide terminal device-specific adaptive parameter configuration, link adaptive transmission is provided for a single terminal device. Retransmission in unicast mode can improve transmission reliability and success rate. Therefore, as an example of unicast retransmission, the network device sends the second downlink control channel to the terminal device in a dedicated search space.
  • the HARQ process number in the second downlink control channel is the same as or is related to the HARQ process number in the first downlink control channel.
  • the so-called HARQ process number in the second downlink control channel is the same as the HARQ process number in the first downlink control channel.
  • the process numbers are the same or related, so that the terminal device can determine that the second downlink data channel used by the second downlink control channel for scheduling is used to transmit the above-mentioned broadcast data.
  • the new data indicator (NDI) in the second downlink control channel is not reversed.
  • the terminal device After the terminal device detects the second downlink control channel in the dedicated search space, it is assumed that the value of the time domain resource allocation information field on the second downlink control channel is m, and the second time domain resource allocation information is a time domain resource allocation table , The terminal device can determine the time domain resource of the second downlink data channel from the row with the index number m+1 in the time domain resource allocation table. And receive broadcast data on the second downlink data channel.
  • the network device configures the terminal device with first time domain resource allocation information, and the first time domain resource allocation information meets the broadcast/multicast/multicast transmission requirements of the terminal device.
  • the network device can also configure the second time domain resource allocation information to the terminal device, thereby not only meeting the unicast transmission demand of the terminal device, but also meeting the broadcast/multicast/multicast transmission demand of the terminal device.
  • This kind of broadcast/multicast/multicast can save transmission resources and effectively avoid transmission congestion.
  • the network device determines that there are fewer terminal devices that need to be retransmitted, it can use unicast retransmission.
  • the so-called unicast retransmission means that the terminal equipment adopts the time-domain resource allocation information corresponding to the RNTI dedicated to the terminal equipment, which can provide the specific adaptive resource configuration of the terminal equipment, and provide link adaptive transmission for a single terminal equipment, thereby improving the broadcast/ The reliability of multicast retransmission improves the success rate of retransmission.
  • Fig. 9 is an interaction flow chart of a method for determining a time domain resource according to another embodiment of the application.
  • the method involves network elements including terminal equipment and network equipment. As shown in Fig. 9, the method includes the following steps:
  • Step S901 The terminal device receives system information, which is used to carry (SC-)MCCH information, and the (SC-)MCCH information includes: (SC-)MCCH-related time domain resource allocation information.
  • system information further includes: (SC-)MCCH MP (modification period, change period) and RP (repetition period, repetition period) and a change notification.
  • SC-MCCH MP modification period, change period
  • RP repetition period, repetition period
  • the above system information may be SIB20.
  • the above system information may be SIB13.
  • each cell is associated with a logical channel SC-MCCH.
  • the information carried on the SC-MCCH is mapped to the third downlink data channel, and the third downlink data channel is scheduled by the third downlink control channel scrambled by the SC-RNTI.
  • the network device may configure the SC-MCCH-related time-domain resource allocation information for the terminal device, and the SC-MCCH-related time-domain resource allocation information is used to determine the time-domain resource of the third downlink data channel.
  • each MBSFN service area is associated with a logical channel MCCH.
  • the information carried on the MCCH is mapped to a physical multicast channel (PMCH), and the physical multicast channel (that is, the third downlink data channel) is scheduled by the third downlink control channel scrambled by the RNTI.
  • the network device may configure the MCCH-related time-domain resource allocation information for the terminal device, and the MCCH-related time-domain resource allocation information is used to determine the time-domain resource of the third downlink data channel.
  • SC-MCCH related time domain resource allocation information can also refer to the first time domain resource allocation information and the second time domain resource allocation information in the above-mentioned embodiment, which will not be repeated here.
  • the terminal device may be in an idle (IDLE mode) state, an RRC connected state (RRC connected mode), or an inactive state (inactive mode), which is not limited in this embodiment.
  • step S902 the terminal device detects the third downlink control channel in the common search space.
  • the third downlink control channel is used to schedule the third downlink data channel.
  • the third downlink data channel may refer to the PDSCH in SC-PTM or the PMCH in MBSFN.
  • Step S903 The terminal device determines the time domain resource of the third downlink data channel according to the time domain resource allocation information related to the (SC-)MCCH and the third downlink control channel (optional).
  • the terminal device can use (SC-)MCCH-related information
  • the row with the index number m+1 in the time domain resource allocation table determines the time domain resource of the third downlink data channel.
  • step S904 the terminal device receives broadcast data on the third downlink data channel.
  • the network device can configure (SC-)MCCH-related time domain resource allocation information to the terminal device through the system information, so that broadcast/multicast/multicast transmission does not need to use the time domain resources of unicast transmission.
  • the distribution information ensures the effective transmission of broadcast/multicast/multicast.
  • FIG. 10 is an interaction flowchart of a method for determining time domain resources according to another embodiment of this application.
  • the method involves network elements including terminal devices and network devices. As shown in FIG. 10, the method includes the following steps:
  • Step S1001 The terminal device receives system information, which is used to carry (SC-)MCCH information, and the (SC-)MCCH information further includes: (SC-)MTCH-related time domain resource allocation information.
  • system information further includes: (SC-)MCCH MP and RP and change notification.
  • the above system information may be SIB20.
  • the above system information may be SIB13.
  • the logical channel SC-MTCH is used to transmit broadcast/multicast/multicast data.
  • the SC-MTCH information is mapped and sent on the fourth downlink data channel.
  • the fourth downlink data channel is scheduled by the fourth downlink control channel scrambled by the G-RNTI.
  • the network device can indicate the SC-MTCH-related time-domain resource allocation information for the terminal device, and the SC-MTCH-related time-domain resource allocation information is carried on the system information.
  • the time domain resource allocation information related to the SC-MTCH is used to determine the time domain resource of the fourth downlink data channel.
  • the information of the logical channel MTCH can be mapped on the fourth downlink data channel (ie, the physical multicast channel PMCH) for transmission.
  • the network device can indicate the MTCH-related time-domain resource allocation information for the terminal device, and the MTCH-related time-domain resource allocation information is carried on the system information.
  • the time domain resource allocation information related to the MTCH is used to determine the time domain resource of the fourth downlink data channel.
  • SC-MTCH related time domain resource allocation information can also refer to the first time domain resource allocation information and the second time domain resource allocation information in the above-mentioned embodiment, which will not be repeated here.
  • the terminal device may be in an idle (IDLE) state or an RRC connected state, which is not limited in this embodiment.
  • Optional step S1002 the terminal device detects the fourth downlink control channel in the common search space.
  • the fourth downlink control channel is used to schedule the fourth downlink data channel.
  • the fourth downlink data channel may be the PDSCH in SC-PTM or the PMCH in MBSFN.
  • Step S1003 The terminal device determines the time domain resource of the fourth downlink data channel according to the (SC-)MTCH-related time domain resource allocation information and the fourth downlink control channel (optional).
  • the terminal device can use the time-domain resource allocation table The row whose index number is m+1 is used to determine the time domain resource of the fourth downlink data channel.
  • Optional step S1004 the terminal device receives broadcast data on the fourth downlink data channel.
  • the network device can configure (SC-)MTCH-related time domain resource allocation information to the terminal device through system information, so that broadcast/multicast/multicast transmission does not need to use unicast transmission time domain resources
  • the distribution information ensures the effective transmission of broadcast/multicast/multicast.
  • FIG. 11 is an interaction flowchart of a method for determining time domain resources according to another embodiment of this application.
  • the method involves network elements including terminal devices and network devices. As shown in FIG. 11, the method includes the following steps:
  • Step S1101 The terminal device receives (SC-)MCCH information, and the (SC-)MCCH information carries (SC-)MTCH-related time domain resource allocation information.
  • the logical channel SC-MTCH is used to transmit broadcast/multicast/multicast data.
  • SC-MTCH information is sent on the fifth downlink data channel (PDSCH).
  • the fifth downlink data channel is scheduled by the fifth downlink control channel scrambled by the SC-RNTI.
  • the network device may configure the SC-MTCH-related time-domain resource allocation information for the terminal device, and the SC-MTCH-related time-domain resource allocation information is used to determine the time-domain resource of the fifth downlink data channel.
  • the logical channel MTCH can be mapped to the transport channel MCH, and the MCH information is sent on the fifth downlink data channel (ie, the physical multicast channel PMCH).
  • the network device may configure the MTCH-related time-domain resource allocation information for the terminal device, and the MTCH-related time-domain resource allocation information is used to determine the time-domain resource of the fifth downlink data channel.
  • SC-MTCH related time domain resource allocation information can also refer to the first time domain resource allocation information and the second time domain resource allocation information in the above-mentioned embodiment, which will not be repeated here.
  • the terminal device may be in an idle (IDLE) state or an RRC connected state, which is not limited in this embodiment.
  • step S1102 the terminal device detects the fifth downlink control channel in the common search space.
  • the fifth downlink control channel is used to schedule the fifth downlink data channel.
  • the fifth downlink data channel may be the PDSCH in SC-PTM or the PMCH in MBSFN.
  • Step S1103 The terminal device determines the time domain resource of the fifth downlink data channel according to the (SC-)MTCH-related time domain resource allocation information and the fifth downlink control channel (optional).
  • the terminal device can select from the time-domain resource allocation table The row with the index number m+1 is used to determine the time domain resource of the fifth downlink data channel.
  • Optional step S1104 the terminal device receives broadcast data on the fifth downlink data channel.
  • the network device can configure (SC-)MTCH-related time domain resource allocation information to the terminal device through the (SC-)MCCH information, so that the broadcast/multicast/multicast transmission does not need to be unicast transmission.
  • the time domain resource allocation information ensures the effective transmission of broadcast/multicast/multicast.
  • Fig. 12 is a schematic diagram of an apparatus for determining a time domain resource according to an embodiment of this application, wherein the apparatus for determining a time domain resource is a part or the whole of the above-mentioned terminal device. As shown in Fig. 12, the apparatus includes:
  • the first obtaining module 1201 is configured to obtain the group-radio network temporary identifier G-RNTI.
  • the first detection module 1202 is configured to detect the first downlink control channel in the common search space, and the G-RNTI is used for scrambling of the first downlink control channel.
  • the second obtaining module 1203 is configured to obtain first time domain resource allocation information, and the first time domain resource allocation information has an association relationship with the G-RNTI.
  • the first determining module 1204 is configured to determine the time domain resource of the first downlink data channel according to the first time domain resource allocation information and the first downlink control channel.
  • the device further includes:
  • the third acquiring module 1205 is used to acquire the temporary identification RNTI of the dedicated wireless network of the terminal device.
  • the second detection module 1206 is configured to detect the second downlink control channel in a search space dedicated to the terminal equipment, and the dedicated RNTI is used for scrambling the second downlink control channel.
  • the fourth obtaining module 1207 is configured to obtain second time domain resource allocation information, and the second time domain resource allocation information has an association relationship with the dedicated RNTI.
  • the second determining module 1208 is configured to determine the time domain resource of the second downlink data channel according to the second time domain resource allocation information and the second downlink control channel.
  • the HARQ process number of the hybrid automatic repeat request in the second downlink control channel is the same as the HARQ process number in the first downlink control channel.
  • the first determining module 1204 is specifically configured to determine the time domain resource of the first downlink data channel according to the value of the time domain resource allocation information field on the first downlink control channel and the first time domain resource allocation information.
  • the first time domain resource allocation information is determined by the network device through any one of pre-definition, system message configuration, or high-level signaling configuration.
  • the first time domain resource allocation information includes at least one of the following: a time unit offset value, a start and length indicator value SLIV of the first downlink data channel, and a mapping type of the first downlink data channel.
  • the time unit offset value is the offset between the second time unit and the first time unit
  • the first time unit is the time unit for receiving the first downlink control channel
  • the second time unit is the time unit for receiving the first downlink data channel. Time unit.
  • the apparatus for determining time domain resources provided in the embodiments of the present application can be used to execute the method for determining time domain resources performed by the above-mentioned terminal device.
  • the method embodiment part for its content and effects, please refer to the method embodiment part, which will not be repeated here.
  • FIG. 13 is a schematic diagram of an apparatus for determining a time domain resource according to an embodiment of this application, wherein the apparatus for determining a time domain resource is part or the whole of the above-mentioned network equipment. As shown in FIG. 13, the apparatus includes:
  • the first configuration module 1301 is used to configure the group-radio network temporary identifier G-RNTI.
  • the first sending module 1302 is used for sending the first downlink control channel, and the G-RNTI is used for scrambling the first downlink control channel.
  • the second sending module 1303 is configured to send the first time domain resource allocation information to the terminal device, and the first time domain resource allocation information has an association relationship with the G-RNTI.
  • the device further includes:
  • the second configuration module 1304 is used to configure the temporary identification RNTI of the private wireless network of the terminal device.
  • the third sending module 1305 is configured to send the second downlink control channel to the terminal equipment, and the dedicated RNTI is used for scrambling of the second downlink control channel.
  • the fourth sending module 1306 is configured to send second time domain resource allocation information to the terminal device, where the second time domain resource allocation information has an association relationship with the dedicated RNTI.
  • the HARQ process number of the hybrid automatic repeat request in the second downlink control channel is the same as the HARQ process number in the first downlink control channel.
  • the first time domain resource allocation information is determined by the network device through any one of pre-definition, system message configuration, or high-level signaling configuration.
  • the first time domain resource allocation information includes at least one of the following: a time unit offset value, a start and length indicator value SLIV of the first downlink data channel, and a mapping type of the first downlink data channel.
  • the time unit offset value is the offset between the second time unit and the first time unit
  • the first time unit is the time unit for receiving the first downlink control channel
  • the second time unit is the time unit for receiving the first downlink data channel. Time unit.
  • the time-domain resource determining apparatus provided in the embodiment of the present application can be used to execute the time-domain resource determining method performed by the network device described above. For its content and effect, please refer to the method embodiment part, and details are not repeated here.
  • FIG. 14 is a schematic diagram of a terminal device provided by an embodiment of the application.
  • the terminal device includes: a memory 1401 and a processor 1402.
  • the memory is used to store computer instructions so that the processor executes the computer instructions to implement the time domain resource determination method executed by the terminal device.
  • the terminal device further includes a transceiver 1403, which is used to implement data transmission with a network device or other devices.
  • FIG. 15 is a schematic diagram of a network device provided by an embodiment of this application.
  • the network device includes: a memory 1501 and a processor 1502.
  • the memory is used to store computer instructions so that the processor executes the computer instructions to implement the time domain resource determination method executed by the network device.
  • the network device further includes a transceiver 1503, which is used to implement data transmission with the network device or other devices.
  • the present application provides a chip, which is used to implement a method for determining a time domain resource executed by a terminal device. For its content and effects, please refer to the method embodiment part, which will not be repeated here.
  • the present application provides a chip, which is used to implement a time domain resource determination method executed by a network device.
  • a chip which is used to implement a time domain resource determination method executed by a network device.
  • the present application provides a computer storage medium, including: computer executable instructions, and the computer executable instructions are used to implement a method for determining a time domain resource executed by a terminal device.
  • computer executable instructions are used to implement a method for determining a time domain resource executed by a terminal device.
  • the present application provides a computer storage medium, including: computer executable instructions, which are used to implement a method for determining time domain resources executed by a network device.
  • computer executable instructions which are used to implement a method for determining time domain resources executed by a network device.

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Abstract

本申请提供一种时域资源确定方法、装置、设备及存储介质。包括：获取组-无线网络临时标识G-RNTI；在公共搜索空间检测第一下行控制信道，G-RNTI用于第一下行控制信道的加扰；获取第一时域资源分配信息，第一时域资源分配信息和G-RNTI具有关联关系；根据第一时域资源分配信息和第一下行控制信道确定第一下行数据信道的时域资源。从而可以在多播/广播/组播传输场景下，确定PDSCH的时域位置。进而可以满足终端设备的广播/多播/组播传输需求，而这种广播/多播/组播可以达到节省传输资源，且能有效避免传输阻塞的效果。

Description

时域资源确定方法、装置、设备及存储介质
本申请要求于2019年9月24日提交中国专利局、申请号为201910907118.5、申请名称为“时域资源确定方法、装置、设备及存储介质”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
本申请涉及通信技术领域，尤其涉及一种时域资源确定方法、装置、设备及存储介质。
背景技术
大量移动数据多媒体业务和各种高带宽多媒体业务，如交互式网络电视(Internet Protocol Television，IPTV)和移动电视(Television，TV)、提供高鲁棒性和极其重要的通信服务，如：灾难情况下的组播通信(group communication)，公共安全网络等对广播/多播/组播业务提出了更高的需求。这些移动数据多媒体业务要求多个用户能够同时接收相同的数据，与一般的单播数据业务相比，具有数据量大、持续时间长、时延敏感等特点。目前第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)提出了多媒体广播多播业务(Multimedia Broadcast Multicast Service,MBMS)，支持在蜂窝系统中提供多播/广播/组播网络，是一种从一个数据源向多个终端设备传输数据的技术，实现了核心网和接入网的资源共享，从而提高了网络资源的利用率。3GPP定义的MBMS业务不仅能够实现纯文本低速率的消息类组播和广播，而且还能够实现高速多媒体业务的广播和组播，以向用户提供多种丰富的视频、音频和多媒体业务。广播业务的特点使得能够在发送公众感兴趣的信息时实现更好的效率，这无疑顺应了未来移动数据发展的趋势，为通信技术的发展提供了更好的业务前景。
5G新空口(New Radio，NR)支持时隙与非时隙类型的调度，NR下行共享物理信道(Physical Downlink Shared Channel，PDSCH)在时隙中的时域位置及时域长度具有很大的灵活性，物理下行控制信道(Physical Downlink Control Channel，PDCCH)下行控制信息(downlink control information，DCI)中的时域资源分配(Time domain resource assignment)信息域来支持PDSCH在时域上调度的灵活性。即终端设备根据所检测到的PDCCH DCI中的时域资源分配信息域来获取DCI所调度的PDSCH的时域位置信息。然而，目前NR中仅提供了单播传输场景下确定时域资源的方法，并没有提供在多播/广播/组播传输场景下，如何确定PDSCH的时域位置的方法。
发明内容
本申请提供一种时域资源确定方法、装置、设备及存储介质，从而可以在多播/广播/组播传输场景下，确定PDSCH的时域位置。
第一方面，本申请提供一种时域资源确定方法，包括：获取组-无线网络临时标识 G-RNTI；在公共搜索空间检测第一下行控制信道，G-RNTI用于第一下行控制信道的加扰；获取第一时域资源分配信息，第一时域资源分配信息和G-RNTI具有关联关系；根据第一时域资源分配信息和第一下行控制信道确定第一下行数据信道的时域资源。从而可以在多播/广播/组播传输场景下，确定PDSCH的时域位置。进而可以满足终端设备的广播/多播/组播传输需求，而这种广播/多播/组播可以达到节省传输资源，且能有效避免传输阻塞的效果。
可选的，方法还包括：获取终端设备的专用无线网络临时标识RNTI；在终端设备专用的搜索空间检测第二下行控制信道，专用RNTI用于第二下行控制信道的加扰；获取第二时域资源分配信息，第二时域资源分配信息和专用RNTI具有关联关系；根据第二时域资源分配信息和第二下行控制信道确定第二下行数据信道的时域资源；其中，第二下行控制信道中的混合自动重传请求HARQ进程号与第一下行控制信道中的HARQ进程号相同。即针对的广播/多播/组播重传问题，网络设备如果确定需要重传的终端设备较少，则可以采用单播方式重传。所谓采用单播重传，即终端设备采用终端设备专用的RNTI对应的时域资源分配信息，能够提供终端设备特定的自适应资源配置，对单个终端设备提供链路自适应传输，进而提高广播/多播重传的可靠性，提高重传的成功率。
可选的，根据第一时域资源分配信息和第一下行控制信道确定第一下行数据信道的时域资源，包括：根据第一下行控制信道上的时域资源分配信息域的值和第一时域资源分配信息确定第一下行数据信道的时域资源。
可选的，第一时域资源分配信息是网络设备通过预定义、系统消息配置或者高层信令配置中的任一方式确定的。
可选的，第一时域资源分配信息包括以下至少一项：时间单元偏移值、第一下行数据信道的起始和长度指示值SLIV、第一下行数据信道的映射类型；其中，时间单元偏移值为第二时间单元与第一时间单元的偏移，第一时间单元为接收第一下行控制信道的时间单元，第二时间单元为接收第一下行数据信道的时间单元。
下面将提供网络设备侧所执行的时域资源确定方法，以及时域资源确定装置、设备、芯片、存储介质及计算机程序产品，其效果可参考上述时域资源确定方法对应的效果，下面对此不再赘述。
第二方面，本申请提供一种时域资源确定方法，包括：配置组-无线网络临时标识G-RNTI；发送第一下行控制信道，G-RNTI用于第一下行控制信道的加扰；向终端设备发送第一时域资源分配信息，第一时域资源分配信息和G-RNTI具有关联关系。
可选的，方法还包括：配置终端设备的专用无线网络临时标识RNTI；向终端设备发送第二下行控制信道，专用RNTI用于第二下行控制信道的加扰；向终端设备发送第二时域资源分配信息，第二时域资源分配信息和专用RNTI具有关联关系；其中，第二下行控制信道中的混合自动重传请求HARQ进程号与第一下行控制信道中的HARQ进程号相同。
可选的，第一时域资源分配信息是网络设备通过预定义、系统消息配置或者高层信令配置中的任一方式确定的。
可选的，第一时域资源分配信息包括以下至少一项：时间单元偏移值、第一下行 数据信道的起始和长度指示值SLIV、第一下行数据信道的映射类型。其中，时间单元偏移值为第二时间单元与第一时间单元的偏移，第一时间单元为接收第一下行控制信道的时间单元，第二时间单元为接收第一下行数据信道的时间单元。
第三方面，本申请提供一种时域资源确定装置，包括：
第一获取模块，用于获取组-无线网络临时标识G-RNTI。
第一检测模块，用于在公共搜索空间检测第一下行控制信道，G-RNTI用于第一下行控制信道的加扰。
第二获取模块，用于获取第一时域资源分配信息，第一时域资源分配信息和G-RNTI具有关联关系。
第一确定模块，用于根据第一时域资源分配信息和第一下行控制信道确定第一下行数据信道的时域资源。
第四方面，本申请提供一种时域资源确定装置，包括：
第一配置模块，用于配置组-无线网络临时标识G-RNTI。
第一发送模块，用于发送第一下行控制信道，G-RNTI用于第一下行控制信道的加扰。
第二发送模块，用于向终端设备发送第一时域资源分配信息，第一时域资源分配信息和G-RNTI具有关联关系。
第五方面，本申请提供一种终端设备，包括：存储器和处理器。存储器用于存储计算机指令，以使处理器执行计算机指令，以实现如第一方面或第一方面的可选方式所述的时域资源确定方法。
第六方面，本申请提供一种网络设备，包括：存储器和处理器。存储器用于存储计算机指令，以使处理器执行计算机指令，以实现如第二方面或第二方面的可选方式所述的时域资源确定方法。
第七方面，本申请提供一种芯片，芯片用于实现如第一方面或第一方面的可选方式所述的时域资源确定方法。
第八方面，本申请提供一种芯片，芯片用于实现如第二方面或第二方面的可选方式所述的时域资源确定方法。
第十方面，本申请提供一种计算机存储介质，包括：计算机可执行指令，计算机可执行指令用于实现如第一方面或第一方面的可选方式所述的时域资源确定方法。
第十一方面，本申请提供一种计算机存储介质，包括：计算机可执行指令，计算机可执行指令用于实现如第二方面或第二方面的可选方式所述的时域资源确定方法。
第十二方面，本申请提供一种计算机程序产品，包括：计算机可执行指令，计算机可执行指令用于实现如第一方面或第一方面的可选方式所述的时域资源确定方法。
第十三方面，本申请提供一种计算机程序产品，包括：计算机可执行指令，计算机可执行指令用于实现如第二方面或第二方面的可选方式所述的时域资源确定方法。
第十四方面，本申请提供一种时域资源确定方法，包括：终端设备接收系统信息，该系统信息用于承载(SC-)MCCH的信息，该(SC-)MCCH的信息包括：(SC-)MCCH相关的时域资源分配信息。可选的，终端设备在公共搜索空间检测第三下行控制信道。终端设备根据(SC-)MCCH相关的时域资源分配信息和第三下行控制信道(可 选的)确定第三下行数据信道的时域资源。终端设备在第三下行数据信道接收广播数据。即网络设备通过系统信息可以向终端设备配置(SC-)MCCH相关的时域资源分配信息，使得广播/多播/组播传输不必采用单播传输的时域资源分配信息，保证了广播/多播/组播的有效传输。
第十五方面，本申请提供一种时域资源确定方法，包括：终端设备接收系统信息，该系统信息用于承载(SC-)MCCH的信息，该(SC-)MCCH的信息包括：(SC-)MTCH相关的时域资源分配信息。可选的，终端设备在公共搜索空间检测第四下行控制信道。终端设备根据(SC-)MTCH相关的时域资源分配信息和第四下行控制信道(可选的)确定第四下行数据信道的时域资源。终端设备在第四下行数据信道接收广播数据。即网络设备通过系统信息可以向终端设备配置(SC-)MTCH相关的时域资源分配信息，使得广播/多播/组播传输不必采用单播传输的时域资源分配信息，保证了广播/多播/组播的有效传输。
第十六方面，本申请提供一种时域资源确定方法，包括：终端设备接收(SC-)MCCH信息，该(SC-)MCCH信息中承载(SC-)MTCH相关的时域资源分配信息。可选的，终端设备在公共搜索空间检测第五下行控制信道。终端设备根据(SC-)MTCH相关的时域资源分配信息和第五下行控制信道(可选的)确定第五下行数据信道的时域资源。终端设备在第五下行数据信道接收广播数据。即网络设备通过(SC-)MCCH信息可以向终端设备配置(SC-)MTCH相关的时域资源分配信息，使得广播/多播/组播传输不必采用单播传输的时域资源分配信息，保证了广播/多播/组播的有效传输。
综上，本申请提供一种时域资源确定方法、装置、设备及存储介质。其中网络设备向终端设备配置了第一时域资源分配信息，该第一时域资源分配信息满足了终端设备的广播/多播/组播传输需求。可选的，网络设备还可以向终端设备配置第二时域资源分配信息，从而既满足了终端设备的单播传输需求，也满足了终端设备的广播/多播/组播传输需求，而这种广播/多播/组播可以达到节省传输资源，且能有效避免传输阻塞的效果。进一步地，针对的广播/多播/组播重传问题，网络设备如果确定需要重传的终端设备较少，则可以采用单播方式重传。所谓采用单播重传，即终端设备采用终端设备专用的RNTI对应的时域资源分配信息，能够提供终端设备特定的自适应资源配置，对单个终端设备提供链路自适应传输，进而提高广播/多播重传的可靠性，提高重传的成功率。
附图说明
图1为MBSFN服务区域的示意图；
图2为MBSFN涉及的信道映射示意图；
图3为FDD下MBSFN子帧与单播子帧的关系示意图；
图4为SC-PTM的信道映射关系示意图；
图5为SC-PTM子帧结构示意图；
图6为本申请一实施例提供的移动通信系统示意图；
图7为本申请一实施例提供的时域资源确定方法的交互流程图；
图8为本申请另一实施例提供的时域资源确定方法的交互流程图；
图9为本申请再一实施例提供的时域资源确定方法的交互流程图；
图10为本申请又一实施例提供的时域资源确定方法的交互流程图；
图11为本申请再一实施例提供的时域资源确定方法的交互流程图；
图12为本申请一实施例提供的一种时域资源确定装置的示意图；
图13为本申请一实施例提供的一种时域资源确定装置的示意图；
图14为本申请一实施例提供的一种终端设备的示意图；
图15为本申请一实施例提供的一种网络设备的示意图。
具体实施方式
国际电信联盟(International Telecommunication Union，ITU)为第五代(5Generation，5G)移动通信系统以及未来的移动通信系统定义了三大类应用场景：增强型移动宽带(Enhanced Mobile Broadband，eMBB)、高可靠低时延通信(Ultra Reliable and Low Latency Communications，URLLC)以及海量机器类通信(massive Machine Type Communications，mMTC)。典型的eMBB业务有：超高清视频、增强现实(Augmented Reality，AR)、虚拟现实(Virtual Reality，VR)等，这些业务的主要特点是传输数据量大、传输速率很高。典型的URLLC业务有：工业制造或生产流程中的无线控制、无人驾驶汽车和无人驾驶飞机的运动控制以及远程修理、远程手术等触觉交互类应用，这些业务的主要特点是要求超高可靠性、低延时，传输数据量较少以及具有突发性。典型的mMTC业务有：智能电网配电自动化、智慧城市等，主要特点是联网设备数量巨大、传输数据量较小、数据对传输时延不敏感，这些mMTC终端需要满足低成本和非常长的待机时间的需求。
如上所述，大量移动数据多媒体业务和各种高带宽多媒体业务，如IPTV和移动TV提供高鲁棒性和极其重要的通信服务，如：灾难情况下的组播通信，公共安全网络等对多播/广播/组播业务提出了更高的需求。这些移动数据多媒体业务要求多个用户能够同时接收相同的数据，与一般的数据业务相比，具有数据量大、持续时间长、时延敏感等特点。目前3GPP提出了多媒体广播多播业务MBMS，支持在蜂窝系统中提供多播/广播/组播网络，是一种从一个数据源向多个终端设备传输数据的技术，实现了核心网和接入网的资源共享，从而提高了网络资源的利用率。3GPP定义的MBMS业务不仅能够实现纯文本低速率的消息类组播和广播，而且还能够实现高速多媒体业务的广播和组播，以向用户提供多种丰富的视频、音频和多媒体业务。广播业务的特点使得能够在发送公众感兴趣的信息时实现更好的效率，这无疑顺应了未来移动数据发展的趋势，为通信技术的发展提供了更好的业务前景。
承载MBMS的方式有主要有两种类型：多播/广播单频网(Multicast/Broadcast Single Frequency Network，MBSFN)和单小区点到多点广播(Single Cell Point to Multipoint，SC-PTM)。
图1为MBSFN服务区域的示意图，如图1所示，MBMS服务区通常由多个多媒体广播单频网(Multimedia Broadcast single frequency network，MBSFN)区域组成，位于同一个MBMS服务区的终端设备会收到相同的内容，将这种通信方式可以称为多小区广播方式。多小区广播意味着多个小区会传输相同的信息，终端设备可以利用这一点有效地使用来自多个小区的信号功率，从而大幅度提高覆盖。通过在多个小区传输相同的信号(即传 输相同的内容、采用相同的编码和调制方式)，同步小区间的传输时间，终端设备接收到的信号如同从一个单一小区接收到的，并且经历了多径传输。从而不仅提高了信号接收的强度，同时消除了小区间干扰。图2为MBSFN涉及的信道映射示意图，如图2所示，MBSFN支持两种逻辑信道，分别为多播传输信道(Multicast Traffic Channel，MTCH)和多播控制信道(Multicast Control Channel，MCCH)。MTCH用于传输MBMS的用户数据。如果一个MBSFN区域提供多条MBMS服务，则可以配置多条MTCH。MCCH用于传输与接收MBMS服务相关的控制信息，包括每一条多播信道(Multicast Channel，MCH)的子帧分配和调制编码样式等。每个MBSFN只有一条MCCH，一个MCCH只对应一个MBSFN区域。逻辑信道MCCH和MTCH会被复用到传输信道MCH上。MCH的传输格式和资源分配是由多小区/多播协同实体(Multi-cell/Multicast Coordination Entity，MCE)决定的，并通过MCCH发送给终端设备。MCH会映射在物理多播信道(Physical Multicast Channel，PMCH)上，并在MBSFN子帧上传输。需要说明的是，MCH的传输是MBSFN区域特定的，而不是小区特定的，因此PMCH的加扰也是MBSFN区域特定的。在长期演进(Long Term Evolution，LTE)系统中，一个子帧为1ms，由两个时隙组成。一个MBSFN子帧由两部分组成：控制区域和MBSFN区域。MBSFN区域用于传输(P)MCH。图3为频分双工(Frequency Division Duplexing，FDD)下MBSFN子帧与单播子帧的关系示意图，如图3所示，在FDD下，单播子帧为子帧(Subframe，SF)0、SF3、SF5-8，MBSFN子帧为SF1、SF2、SF4、SF9。
SC-PTM：在长期演进的演进(LTE-Advanced，LTE-A)中引入了单小区MBMS研究。不同于MBSFN，SC-PTM只将MBMS信息发给对期待接收该MBMS信息的小区。终端设备利用SC-PTM接收广播消息的过程如下：
步骤一：终端设备接收系统信息块(System Information Block，SIB)20，以获取单小区-多播控制信道(Single Cell-Multicast Control Channel，SC-MCCH)的信息。
步骤二：终端设备接收单小区-多播控制信道(Single Cell-Multicast Control Channel，SC-MCCH)，其中SC-MCCH由单小区-无线网络临时标识(Single Cell-Radio Network Tempory Identity，SC-RNTI)加扰，其用于承载SC-PTM配置信息。
SC-MCCH发送方法：网络设备在SC-MCCH所在的单播子帧的PDCCH上发送SC-MCCH的调度信息，网络设备在单播子帧的PDSCH上发送SC-MCCH，SC-MCCH包括：MBMS业务的临时移动组标识(Temporary MobileGroupIdentity，TMGI)与SC-PTM业务在PDCCH上的组-无线网络临时标识(Group-Radio Network Tempory Identity，G-RNTI)的映射关系，和SC-PTM业务所在的时域位置信息。每个MBMS服务可以由相应TMGI唯一识别，其可以包括公共陆地移动网络(Public Land Mobile Network，PLMN)标识符加上服务标识符。
步骤三：终端设备根据SC-MCCH接收单小区-多播传输信道(Single cell-Multicast Traffic Channel，SC-MTCH)，SC-MTCH由G-RNTI加扰。图4为SC-PTM的信道映射关系示意图，如图4所示，逻辑信道SC-MCCH和SC-MTCH映射在传输信道下行共享信道(Downlink share channel，DL-SCH)上，DL-SCH映射到PDSCH上。G-RNTI用于加扰PDCCH的循环冗余校验(Cyclic Redundancy Check,CRC)，该PDCCH用于调度承载SC-MTCH信息的PDSCH。图5为SC-PTM子帧结构示意图，PDCCH、多播PDSCH以及 单播PDSCH的时频域分布情况如图5所示。
如上所述，NR支持时隙与非时隙类型的调度，NR PDSCH在时隙中的时域位置及时域长度具有很大的灵活性。终端设备根据所检测到的PDCCH DCI中的时域资源分配信息域来获取DCI所调度PDSCH的时域位置信息。该时域位置信息包括：PDSCH所在的时隙、PDSCH的时域长度以及PDSCH在时隙中的起始正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号索引。如果时域资源分配信息域的值为m，那么终端设备可以从一个PDSCH时域资源分配(Applicable PDSCH Time Domain Resource Allocation)信息中索引号为m+1的行内获取PDSCH的位置信息。终端设备可根据不同情况，通过预定义、系统消息、高层信令这三种途径中的一种来获取时域资源分配信息。不同情况包括终端设备检测DCI所加扰的RNTI类型以及所在的搜索空间类型、终端设备被配置的高层参数。对于初始接入状态的终端设备，可使用预定义的分配信息来获取承载系统消息的PDSCH的时域位置；而对于处于无线资源控制(Radio Resource Control，RRC)连接状态的终端设备，可通过高层信令pdsch-Config中的参数pdsch-TimeDomainAllocationList获取分配信息。当DCI所加扰的RNTI类型为小区-无线网络临时标识(Cell-RadioNetworkTemporaryIdentifier，C-RNTI)，调制与编码方式-小区-无线网络临时标识(Modulation and Coding Scheme-Cell-RadioNetworkTemporaryIdentifier，MCS-C-RNTI)或配置调度-无线网络临时标识(Configured Scheduling RNTI，CS-RNTI)，在终端设备专用的搜索空间搜索所述DCI的终端设备，同时终端设备接收高层信令pdsch-Config配置参数pdsch-TimeDomainAllocationList。需要说明的是，C-RNTI,MCS-C-RNTI和CS-RNTI都是配置给终端设备专用的RNTI，所以每个终端设备的PDSCH时域资源分配信息是独立配置的，可能各不相同，且多个终端设备被配置的PDSCH时域资源分配信息中可能没有公共的PDSCH时域资源分配信息。如果终端设备没有被配置高层信令pdsch-Config或参数pdsch-TimeDomainAllocationList，但是收到了系统消息pdsch-ConfigCommon包括参数pdsch-TimeDomainAllocationList，则据此参数获取PDSCH时域资源分配信息，该时域资源分配信息是公共时域资源分配信息，即可以应用于小区中所有的终端设备。具体的PDSCH时域资源分配方式如表1所示。其中default A(即表2和表3)、defaultB(即表4)、default C(即表5)分别表示通过预定义方式确定的三个时域资源分配，其中表2为一般循环前缀的预定义表格A，表3为扩展循环前缀的预定义表格A。
表1
Figure PCTCN2020117305-appb-000001
Figure PCTCN2020117305-appb-000002
Figure PCTCN2020117305-appb-000003
表2
Figure PCTCN2020117305-appb-000004
表3
Figure PCTCN2020117305-appb-000005
Figure PCTCN2020117305-appb-000006
表4
Figure PCTCN2020117305-appb-000007
Figure PCTCN2020117305-appb-000008
表5
Figure PCTCN2020117305-appb-000009
目前，NR架构下没有多播/广播/组播传输相应的时域资源分配方式。而由于单播传输提供的是终端设备特定的自适应参数配置，对单个终端设备提供链路自适应传输。广播/多播/组播业务是网络设备发给多个终端设备的，接收多播/广播/组播业务的终端设备应在相同的物理资源上接收相同的数据。如表1最后一行所示，各个终端设备在专用的搜索空间检测PDCCH，从而根据配置给特定终端设备的高层参数确定PDSCH的时域资源，这会 导致不同的终端设备其确定的PDSCH的时域资源不尽相同，从而无法实现在统一的时域资源上发送多播/广播/组播业务。因此NR架构下的单播数据信道时域资源分配方式也不适用于多播/广播/组播业务。
为了解决上述技术问题，本申请提出如下发明构思：网络设备为终端设备配置用于多播/广播/组播业务传输的时域资源分配信息，可选的，该时域资源分配信息为网络设备额外配置的时域资源分配信息，不同于表2～表5的标准预定义的PDSCH时域资源分配信息，且独立于高层参数pdsch-Config包含pdsch-Time Domain Allocation List表示的PDSCH时域资源分配信息以及系统消息pdsch-Config Common包含pdsch-Time Domain Allocation List表示的PDSCH时域资源分配信息。该时域资源分配信息可以为一个时域资源分配表，或者为一个时域资源分配表中的某一行，又或者为一个时域资源分配集合，本申请对此不做限制。此外，本申请中的时域资源分配信息可以是网络设备为终端设备预先配置的，基于此，终端设备和网络设备两侧都存储有该时域资源分配信息。或者，当终端设备需要使用该时域资源分配信息时，网络设备实时为该终端设备配置该时域资源分配信息。
本申请技术方案适用但不限于如下移动通信系统，图6为本申请一实施例提供的移动通信系统示意图，如图6所示，移动通信系统包括核心网设备610、网络设备620和至少一个终端设备(如图6所示的终端设备630和终端设备640)。终端设备通过无线的方式与网络设备相连，网络设备通过无线或有线方式与核心网设备连接。核心网设备与网络设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与网络设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的网络设备的功能。终端设备可以是固定位置的，也可以是可移动的。如图6仅是一种示例性性的系统示意图，该系统中还可以包括其它网络设备，如还可以包括无线中继设备和无线回传设备，图6未示出。本申请对该移动通信系统中包括的核心网设备、网络设备和终端设备的数量不做限定。
需要说明的是，本申请提供的技术方案可以应用于各种通信系统，例如：LTE系统、5G移动通信系统中的NR系统以及未来的移动通信系统等。
本申请技术方案涉及如下网元：
网络设备：网络侧的一种用于发射或接收信号的实体。本申请中涉及的网络设备可以是全球移动通讯(Global System of Mobile communication，GSM)或码分多址(Code Division Multiple Access，CDMA)中的基站(Base Transceiver Station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，WCDMA)中的基站(NodeB，NB)，还可以是LTE或者增强的长期演进(evolved Long Term Evolution，eLTE)中的演进型基站(evolved NodeB，eNB)，或者是下一代演进型基站(next generation-evolved NodeB，ng-eNB)、还可以是无线局域网(Wireless Local Area Networ，WLAN)中的接入点(Access Point，AP)或者中继站，也可以是5G NR中的gNB等，在此不作限定。
终端设备：终端设备是用户侧的一种用于接收或发射信号的实体。终端设备也可以称为终端Terminal、用户设备(User Equipment，UE)、移动台(Mobile Station，MS)、移动终端(Mobile Terminal，MT)等。终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self-driving) 中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
网络设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、无人机、气球和卫星上。本申请的实施例对网络设备和终端设备的应用场景不做限定。
下面对本申请技术方案进行详细说明：
图7为本申请一实施例提供的时域资源确定方法的交互流程图，该方法涉及网元包括：终端设备和网络设备，如图7所示，该方法包括如下步骤：
步骤S701：网络设备向终端设备配置G-RNTI。
可选的，本实施例可以应用于如下场景：对于RRC连接态的终端设备，既被配置了终端设备专用的RNTI(即用于单播传输的专用RNTI，如表1最后一行所示的C-RNTI，MCS-C-RNTI，CS-RNTI)，也被配置了用于广播/多播/组播传输的G-RNTI，基于此，该终端设备既可以接收单播传输，也可以接收广播传输。应理解，这里的G-RNTI也可以是一种特殊的标识(Identity，ID)或者RNTI，其和第一下行控制信道关联。
下面对步骤S701进行如下说明：
其中，终端设备开机后，通过执行小区搜索以及随机接入过程接入到一个小区中。这时网络设备和终端设备建立连接，终端设备进入RRC连接态。其中，RRC连接态的终端设备被配置了G-RNTI和终端设备专用的RNTI。应理解，配置G-RNTI和终端设备专用的RNTI也可以是在其它场景下，例如在终端设备进行小区切换的场景下，网络设备可以向终端设备配置G-RNTI和终端设备专用的RNTI。
G-RNTI用于加扰第一下行控制信道，网络设备通过高层信令或系统信息为接收相同广播业务的一组终端设备配置相同的G-RNTI。这里的广播业务还可以是多播业务或者是组播业务。该第一下行控制信道是调度广播/多播/组播传输的下行控制信道，例如是调度广播/多播/组播传输的PDCCH，该第一下行控制信道用于调度第一下行数据信道，该第一下行数据信道可以是用于承载广播/多播/组播传输。
终端设备专用的RNTI用于加扰第二下行控制信道，终端设备可以在专用的搜索空间或者公共搜索空间检测第二下行控制信道，该第二下行控制信道是调度单播传输的下行控制信道，例如是调度单播传输的PDCCH，该第二下行控制信道用于调度第二下行数据信道，该第二下行数据信道可以是用于单播传输的PDSCH。该终端设备专用的RNTI可以是C-RNTI、MCS-C-RNTI、CS-RNTI，这些RNTI为终端设备的专用RNTI，本申请对此不做限制。
应理解，上述第一下行控制信道和第二下行控制信道的具体划分可以有不同方式，可以以时频资源的不同而不同，或是以不同逻辑位置的不同，也可以按照不同树形节点或聚合级别来划分。
所谓G-RNTI用于加扰第一下行控制信道，可以指的是第一下行控制信道上的DCI之后需要附着一个根据该DCI生成的CRC，该CRC上加扰所述G-RNTI。所谓终端设备专用的RNTI用于加扰第二下行控制信道，指的是第二下行控制信道上的DCI之后需要附着 一个根据该DCI生成的CRC，该CRC上加扰所述终端设备专用的RNTI。因此不同作用的DCI使用不同的RNTI。
步骤S702：终端设备在公共搜索空间检测第一下行控制信道。
步骤S703：网络设备向终端设备发送第一时域资源分配信息，该第一时域资源分配信息和G-RNTI具有关联关系。
需要说明的是，本申请对步骤S702与步骤S703的先后顺序不做限制。
第一时域资源分配信息用于确定广播/多播/组播传输PDSCH的时域资源分配。第二时域资源分配信息用于确定单播传输PDSCH的时域资源分配，终端设备可以同时被配置第一时域资源分配信息和第二时域资源分配信息。
所谓第一时域资源分配信息和G-RNTI具有关联关系指的是，该G-RNTI用于加扰第一下行控制信道，该第一下行控制信道用于调度第一下行数据信道，而第一下行控制信道和第一时域资源分配信息可以用于确定第一下行数据信道的时域资源。类似的，第二时域资源分配信息和终端设备专用的RNTI也具有关联关系，该关联关系指的是，该终端设备专用的RNTI用于加扰第二下行控制信道，该第二下行控制信道用于调度第二下行数据信道，而第二下行控制信道和第二时域资源分配信息可以用于确定第二下行数据信道的时域资源。
示例性的，网络设备可以通过如下可选方式向终端设备分配第一时域资源分配信息和第二时域资源分配信息：
可选方式一：网络设备为广播/多播/组播配置专门(即额外)的第一时域资源分配信息，即该第一时域资源分配信息不是单播传输中的时域资源分配信息，不同于表2～表5的标准预定义的PDSCH时域资源分配信息，且独立于高层参数pdsch-Config包含pdsch-Time Domain Allocation List表示的PDSCH时域资源分配信息以及系统消息pdsch-Config Common包含pdsch-Time Domain Allocation List表示的PDSCH时域资源分配信息。网络设备通过高层信令为终端设备配置第二时域资源分配信息。
其中，对于被配置了终端设备专用的RNTI的终端设备，若需要在终端设备专用的搜索空间检测第二下行控制信道，则网络设备可以通过RRC信令配置与终端设备专用的RNTI相关的第二时域资源分配信息。第二时域资源分配信息可以是一个PDSCH时域资源分配表，该PDSCH时域资源分配表由若干行组成，每一行的信息包括：(1)时间偏移值K0，如果终端设备在时间单元n接收到第二下行控制信道，在时间单元n+k接收到第二下行数据信道，则时间偏移值为k；(2)第二下行数据信道的起始和长度指示值(Start and Length Indicator Value，SLIV)；(3)第二下行数据信道的映射类型。由终端设备专用的RNTI加扰的第二下行控制信道上承载的时域资源分配信息域，用于指示第二时域资源分配信息中的一行作为其调度的第二下行数据信道发送的时域资源。
终端设备还获取第一时域资源分配信息，G-RNTI用于对第一下行控制信道的CRC加扰，第一下行数据信道传输所占用的时域资源是通过第一时域资源分配信息确定的。网络设备可以通过预定义、系统消息配置或者高层信令配置中的任一种方式向终端设备配置第一时域资源分配信息。其中，第一时域资源分配信息可以是一时域资源分配表，该时域资源分配表中有若干行，每一行包括下列信息中的至少一个：
(1)时间偏移值K0：如果终端设备在时间单元n(即第一时间单元)接收到第一下 行控制信道，在时间单元n+K0(即第二时间单元)接收到第一下行数据信道，则时间偏移值为K0。
(2)第一下行数据信道在时间单元内的SLIV值。其中终端设备可以根据SLIV值得到第一下行数据信道在时间单元中的起始OFDM符号的索引值S，以及，第一下行数据信道的时域长度L，其中第一下行数据信道从索引号S的OFDM符号开始占用连续L个OFDM符号。SLIV值的计算公式如下：
如果(L-1)<＝7，那么SLIV＝14x(L-1)+S
否则，SLIV＝14x(14-L+1)+(14-1-S)，其中0<L<＝14-S。
或者，第(2)点可以被替换为：第一下行数据信道在时间单元中的起始符号的索引值S以及时域长度值L。
(3)第一下行数据信道的映射类型：Type A和Type B，可选的，还可以包括其他的映射类型，本申请对此不做限制。对于不同的映射类型，参数S、L以及S+L的取值范围不同，以支持不同类型的时域调度。比如对于type B，第一下行数据信道对应的时域长度L可以为2,4,7。如表6所示，只有当相应的参数S、L和S+L位于对应的取值范围内时，调用第一下行数据信道才有效。
表6
Figure PCTCN2020117305-appb-000010
需要说明的是，在本申请中，时间单元可以由N个OFDM符号组成，N为大于或等于1的整数。可选的，时间单元为时隙，时隙由14个OFDM符号组成。或者时间单元为微时隙，一个微时隙包含的OFDM符号数目小于14。
可选方式二：网络设备为广播/多播/组播传输配置第一时域资源分配信息，其中该第一时域资源分配信息是单播传输中小区公共的时域资源分配信息，如系统消息pdsch-Config Common包含pdsch-Time Domain Allocation List表示的PDSCH时域资源分配信息，网络设备通过高层信令为终端设备配置第二时域资源分配信息。
针对第二时域资源分配信息可参见可选方式一中的内容，对此不再赘述。
终端设备可以通过系统消息配置或者高层信令配置方式向终端设备配置第一时域资源分配信息，第一时域资源分配信息是单播传输中小区公共的时域资源分配表，即小区中所有终端设备都可以采用该第一时域资源分配信息确定第一下行数据信道的时域资源。
其中，当第一时域资源分配信息为时域资源分配表时，其每一行包括的时域资源分配信息与可选方式一所描述的一致，对此不再赘述。
可选方式三：网络设备通过预定义方式向广播/多播/组播传输配置第一时域资源分配信息，该第一时域资源分配信息是通过预定义方式向单播传输配置的一个时域资源分配表，网络设备通过高层信令为终端设备配置第二时域资源分配信息。
例如：网络设备从预定义的多个时域资源分配表中选取一个，并将其作为第一时域资源分配信息。
其中，当第一时域资源分配信息为时域资源分配表时，其每一行包括的时域资源分配信息与可选方式一所描述的一致，对此不再赘述。
步骤S704：终端设备根据第一时域资源分配信息和第一下行控制信道确定第一下行数据信道的时域资源。
步骤S704也可以被理解为：终端设备根据第一时域资源分配信息、第一下行控制信道以及第一时域资源分配信息与G-RNTI的关联关系确定第一下行数据信道的时域资源。
终端设备在公共搜索空间检测第一下行控制信道。假设第一下行控制信道上的时域资源分配信息域的值为m，第一时域资源分配信息为一时域资源分配表，则终端设备可从该时域资源分配表中索引号为m+1的行内确定第一下行数据信道的时域资源，即确定第一下行数据信道的时域资源的位置。
图8为本申请另一实施例提供的时域资源确定方法的交互流程图，该方法涉及网元包括：终端设备和网络设备，如图8所示，在上述步骤S704之后，该方法还包括如下步骤：
步骤S705：网络设备向终端设备配置终端设备的专用RNTI。
可选的，网络设备通过高层信令为终端设备配置终端设备的专用RNTI。
步骤S706：终端设备在终端设备专用的搜索空间检测第二下行控制信道。
步骤S707：网络设备向终端设备发送第二时域资源分配信息。
需要说明的是，步骤S707可以在步骤S705之前执行，或者可以在步骤S705和步骤S706之间执行，又或者可以与步骤S705同时执行，本申请对此不做限制。
步骤S708：终端设备根据第二时域资源分配信息和第二下行控制信道确定第二下行数据信道的时域资源。
可选的，步骤S705至步骤S708可应用于如下场景：终端设备在第一下行数据信道接收广播数据。当终端设备确定接收广播数据失败，网络设备可以使用第二下行数据信道进行广播数据的重传。当然，本实施例提供的技术方案不仅仅适用于该应用场景。
下面以在上述场景下为例，对本实施例进行说明：
终端设备确定接收广播数据接收失败，或者终端设备确定需要发送反馈信息指示终端设备接收广播数据失败，所述终端设备可以向网络设备发送反馈信息，以指示终端设备对广播数据接收失败。或，当终端设备未接收到广播数据时，可以不向网络设备发送反馈信息，当网络设备在预设时间内未接收到反馈信息，则认为终端设备未接收到广播数据。
对于网络设备而言，若发送给一组终端设备的广播/多播/组播传输，仅有一少部分终端设备接收失败，则网络设备可以采用单播传输方式重传上述广播数据。因为单播传输能够提供终端设备特定的自适应参数配置，对单个终端设备提供链路自适应传输。以单播方式重传可以提高传输的可靠性以及成功率。因此，作为单播方式重传的一个示例，网络设备在专用的搜索空间向终端设备发送第二下行控制信道。其中，第二下行控制信道中的HARQ进程号与第一下行控制信道中的HARQ进程号相同或相关联，所谓第二下行控制信 道中的HARQ进程号与第一下行控制信道中的HARQ进程号相同或相关联，可以使得终端设备确定第二下行控制信道用于调度的第二下行数据信道是用来传输上述广播数据的。且第二下行控制信道中的新数据指示(new data indicator，NDI)不翻转。
终端设备在专用的搜索空间中检测到第二下行控制信道之后，假设第二下行控制信道上的时域资源分配信息域的值为m，且第二时域资源分配信息为一时域资源分配表，则终端设备可从该时域资源分配表中索引号为m+1的行内确定第二下行数据信道的时域资源。并在该第二下行数据信道接收广播数据。
综上，在本申请中，网络设备向终端设备配置了第一时域资源分配信息，该第一时域资源分配信息满足了终端设备的广播/多播/组播传输需求。可选的，网络设备还可以向终端设备配置第二时域资源分配信息，从而既满足了终端设备的单播传输需求，也满足了终端设备的广播/多播/组播传输需求，而这种广播/多播/组播可以达到节省传输资源，且能有效避免传输阻塞的效果。进一步地，针对的广播/多播/组播重传问题，网络设备如果确定需要重传的终端设备较少，则可以采用单播方式重传。所谓采用单播重传，即终端设备采用终端设备专用的RNTI对应的时域资源分配信息，能够提供终端设备特定的自适应资源配置，对单个终端设备提供链路自适应传输，进而提高广播/多播重传的可靠性，提高重传的成功率。
图9为本申请再一实施例提供的时域资源确定方法的交互流程图，该方法涉及网元包括：终端设备和网络设备，如图9所示，该方法包括如下步骤：
步骤S901：终端设备接收系统信息，该系统信息用于承载(SC-)MCCH的信息，该(SC-)MCCH的信息包括：(SC-)MCCH相关的时域资源分配信息。
可选的，该系统信息还包括：(SC-)MCCH的MP(modification period，变更周期)和RP(repetition period,重复周期)以及变更通知。
对于SC-PTM来讲，上述系统信息可以为SIB20。对于MBSFN来讲，上述系统信息可以为SIB13。
下面，将对不同场景下，(SC-)MCCH相关的时域资源分配信息做具体说明。
对于SC-PTM来讲，每个小区与一条逻辑信道SC-MCCH相关联。SC-MCCH上承载的信息映射到第三下行数据信道上，该第三下行数据信道是由SC-RNTI加扰的第三下行控制信道调度。网络设备可以为终端设备配置SC-MCCH相关的时域资源分配信息，该SC-MCCH相关的时域资源分配信息用于确定第三下行数据信道的时域资源。
对于MBSFN来讲，每个MBSFN服务区域与一条逻辑信道MCCH相关联。MCCH上承载的信息映射到物理多播信道(PMCH)上，该物理多播信道(即第三下行数据信道)是由RNTI加扰的第三下行控制信道调度。网络设备可以为终端设备配置MCCH相关的时域资源分配信息，该MCCH相关的时域资源分配信息用于确定第三下行数据信道的时域资源。
而(SC-)MCCH相关的时域资源分配信息还可参见上述实施例中的第一时域资源分配信息和第二时域资源分配信息，对此不再赘述。
需要说明的是，本实施例中，终端设备可以处于空闲(IDLE mode)态或者RRC连接态(RRC connected mode)或者非激活状态(inactive mode)，本实施例对此不做限制。
可选步骤S902：终端设备在公共搜索空间检测第三下行控制信道。
该第三下行控制信道用于调度第三下行数据信道。
如上所述，该第三下行数据信道可以是指SC-PTM中的PDSCH，也可以是指MBSFN中的PMCH。
步骤S903：终端设备根据(SC-)MCCH相关的时域资源分配信息和第三下行控制信道(可选的)确定第三下行数据信道的时域资源。
假设第三下行控制信道上的时域资源分配信息域的值为m，(SC-)MCCH相关的时域资源分配信息为一时域资源分配表，则终端设备可从(SC-)MCCH相关的时域资源分配表中索引号为m+1的行，以确定第三下行数据信道的时域资源。
可选步骤S904：终端设备在第三下行数据信道接收广播数据。
综上，在本实施例中，网络设备通过系统信息可以向终端设备配置(SC-)MCCH相关的时域资源分配信息，使得广播/多播/组播传输不必采用单播传输的时域资源分配信息，保证了广播/多播/组播的有效传输。
图10为本申请又一实施例提供的时域资源确定方法的交互流程图，该方法涉及网元包括：终端设备和网络设备，如图10所示，该方法包括如下步骤：
步骤S1001：终端设备接收系统信息，该系统信息用于承载(SC-)MCCH的信息，该(SC-)MCCH的信息还包括：(SC-)MTCH相关的时域资源分配信息。
可选的，该系统信息还包括：(SC-)MCCH的MP和RP以及变更通知。
对于SC-PTM来讲，上述系统信息可以为SIB20。对于MBSFN来讲，上述系统信息可以为SIB13。
下面，将对不同场景下，(SC-)MTCH相关的时域资源分配信息做具体说明。
对于SC-PTM来讲，逻辑信道SC-MTCH用于传输广播/多播/组播数据，在物理层，SC-MTCH的信息映射在第四下行数据信道上发送。该第四下行数据信道是由G-RNTI加扰的第四下行控制信道调度。网络设备可以为终端设备指示SC-MTCH相关的时域资源分配信息，SC-MTCH相关的时域资源分配信息承载在系统信息上。该SC-MTCH相关的时域资源分配信息用于确定第四下行数据信道的时域资源。
对于MBSFN来讲，逻辑信道MTCH的信息可以映射在第四下行数据信道(即物理多播信道PMCH)上发送。网络设备可以为终端设备指示MTCH相关的时域资源分配信息，MTCH相关的时域资源分配信息承载在系统信息上。该MTCH相关的时域资源分配信息用于确定第四下行数据信道的时域资源。
而(SC-)MTCH相关的时域资源分配信息还可参见上述实施例中的第一时域资源分配信息和第二时域资源分配信息，对此不再赘述。
需要说明的是，本实施例中，终端设备可以处于空闲(IDLE)态或者RRC连接态，本实施例对此不做限制。
可选步骤S1002：终端设备在公共搜索空间检测第四下行控制信道。
该第四下行控制信道用于调度第四下行数据信道。
如上所述，该第四下行数据信道可以是SC-PTM中的PDSCH，也可以是MBSFN中的PMCH。
步骤S1003：终端设备根据(SC-)MTCH相关的时域资源分配信息和第四下行控制信道(可选的)确定第四下行数据信道的时域资源。
假设第四下行控制信道上的时域资源分配信息域的值为m，且(SC-)MTCH相关的时域资源分配信息为一时域资源分配表，则终端设备可从该时域资源分配表中索引号为m+1的行，以确定第四下行数据信道的时域资源。
可选步骤S1004：终端设备在第四下行数据信道接收广播数据。
需要说明的是，本实施例和上一实施例可以结合执行也可以单独执行。
综上，在本实施例中，网络设备通过系统信息可以向终端设备配置(SC-)MTCH相关的时域资源分配信息，使得广播/多播/组播传输不必采用单播传输的时域资源分配信息，保证了广播/多播/组播的有效传输。
图11为本申请再一实施例提供的时域资源确定方法的交互流程图，该方法涉及网元包括：终端设备和网络设备，如图11所示，该方法包括如下步骤：
步骤S1101：终端设备接收(SC-)MCCH信息，该(SC-)MCCH信息中承载(SC-)MTCH相关的时域资源分配信息。
下面，将对不同场景下，(SC-)MTCH相关的时域资源分配信息做具体说明。
对于SC-PTM来讲，逻辑信道SC-MTCH用于传输广播/多播/组播数据，在物理层，SC-MTCH的信息在第五下行数据信道(PDSCH)上发送。该第五下行数据信道是由SC-RNTI加扰的第五下行控制信道调度。网络设备可以为终端设备配置SC-MTCH相关的时域资源分配信息，该SC-MTCH相关的时域资源分配信息用于确定第五下行数据信道的时域资源。
对于MBSFN来讲，逻辑信道MTCH可以映射到传输信道MCH上，MCH的信息在第五下行数据信道(即物理多播信道PMCH)上发送。网络设备可以为终端设备配置MTCH相关的时域资源分配信息，该MTCH相关的时域资源分配信息用于确定第五下行数据信道的时域资源。
而(SC-)MTCH相关的时域资源分配信息还可参见上述实施例中的第一时域资源分配信息和第二时域资源分配信息，对此不再赘述。
需要说明的是，本实施例中，终端设备可以处于空闲(IDLE)态或者RRC连接态，本实施例对此不做限制。
可选步骤S1102：终端设备在公共搜索空间检测第五下行控制信道。
该第五下行控制信道用于调度第五下行数据信道。
如上所述，该第五下行数据信道可以是SC-PTM中的PDSCH，也可以是MBSFN中的PMCH。
步骤S1103：终端设备根据(SC-)MTCH相关的时域资源分配信息和第五下行控制信道(可选的)确定第五下行数据信道的时域资源。
假设第五下行控制信道上的时域资源分配信息域的值为m，且(SC-)MTCH相关的时域资源分配信息为一时域资源分配表，则终端设备可从时域资源分配表中索引号为m+1的行，以确定第五下行数据信道的时域资源。
可选步骤S1104：终端设备在第五下行数据信道接收广播数据。
综上，在本实施例中，网络设备通过(SC-)MCCH信息可以向终端设备配置(SC-)MTCH相关的时域资源分配信息，使得广播/多播/组播传输不必采用单播传输的时域资源分配信息，保证了广播/多播/组播的有效传输。
图12为本申请一实施例提供的一种时域资源确定装置的示意图，其中该时域资源确定装置为上述终端设备的部分或者整体，如图12所示，该装置包括：
第一获取模块1201，用于获取组-无线网络临时标识G-RNTI。
第一检测模块1202，用于在公共搜索空间检测第一下行控制信道，G-RNTI用于第一下行控制信道的加扰。
第二获取模块1203，用于获取第一时域资源分配信息，第一时域资源分配信息和G-RNTI具有关联关系。
第一确定模块1204，用于根据第一时域资源分配信息和第一下行控制信道确定第一下行数据信道的时域资源。
可选的，该装置还包括：
第三获取模块1205，用于获取终端设备的专用无线网络临时标识RNTI。
第二检测模块1206，用于在终端设备专用的搜索空间检测第二下行控制信道，专用RNTI用于第二下行控制信道的加扰。
第四获取模块1207，用于获取第二时域资源分配信息，第二时域资源分配信息和专用RNTI具有关联关系。
第二确定模块1208，用于根据第二时域资源分配信息和第二下行控制信道确定第二下行数据信道的时域资源。
其中，第二下行控制信道中的混合自动重传请求HARQ进程号与第一下行控制信道中的HARQ进程号相同。
可选的，第一确定模块1204具体用于：根据第一下行控制信道上的时域资源分配信息域的值和第一时域资源分配信息确定第一下行数据信道的时域资源。
可选的，第一时域资源分配信息是网络设备通过预定义、系统消息配置或者高层信令配置中的任一方式确定的。
可选的，第一时域资源分配信息包括以下至少一项：时间单元偏移值、第一下行数据信道的起始和长度指示值SLIV、第一下行数据信道的映射类型。其中，时间单元偏移值为第二时间单元与第一时间单元的偏移，第一时间单元为接收第一下行控制信道的时间单元，第二时间单元为接收第一下行数据信道的时间单元。
本申请实施例提供的时域资源确定装置可用于执行上述终端设备所执行的时域资源确定方法，其内容和效果可参考方法实施例部分，对此不再赘述。
图13为本申请一实施例提供的一种时域资源确定装置的示意图，其中该时域资源确定装置为上述网络设备的部分或者整体，如图13所示，该装置包括：
第一配置模块1301，用于配置组-无线网络临时标识G-RNTI。
第一发送模块1302，用于发送第一下行控制信道，G-RNTI用于第一下行控制信道的加扰。
第二发送模块1303，用于向终端设备发送第一时域资源分配信息，第一时域资源分配信息和G-RNTI具有关联关系。
可选的，该装置还包括：
第二配置模块1304，用于配置终端设备的专用无线网络临时标识RNTI。
第三发送模块1305，用于向终端设备发送第二下行控制信道，专用RNTI用于第二下 行控制信道的加扰。
第四发送模块1306，用于向终端设备发送第二时域资源分配信息，第二时域资源分配信息和专用RNTI具有关联关系。
其中，第二下行控制信道中的混合自动重传请求HARQ进程号与第一下行控制信道中的HARQ进程号相同。
可选的，第一时域资源分配信息是网络设备通过预定义、系统消息配置或者高层信令配置中的任一方式确定的。
可选的，第一时域资源分配信息包括以下至少一项：时间单元偏移值、第一下行数据信道的起始和长度指示值SLIV、第一下行数据信道的映射类型。其中，时间单元偏移值为第二时间单元与第一时间单元的偏移，第一时间单元为接收第一下行控制信道的时间单元，第二时间单元为接收第一下行数据信道的时间单元。
本申请实施例提供的时域资源确定装置可用于执行上述网络设备所执行的时域资源确定方法，其内容和效果可参考方法实施例部分，对此不再赘述。
图14为本申请一实施例提供的一种终端设备的示意图，如图14所示，该终端设备包括：存储器1401和处理器1402。存储器用于存储计算机指令，以使处理器执行计算机指令，以实现终端设备所执行的时域资源确定方法，其内容和效果可参考方法实施例部分，对此不再赘述。可选的，该终端设备还包括收发器1403，用于实现与网络设备或者其他设备之间的数据传输。
图15为本申请一实施例提供的一种网络设备的示意图，如图15所示，该网络设备包括：存储器1501和处理器1502。存储器用于存储计算机指令，以使处理器执行计算机指令，以实现网络设备所执行的时域资源确定方法，其内容和效果可参考方法实施例部分，对此不再赘述。可选的，该网络设备还包括收发器1503，用于实现与网络设备或者其他设备之间的数据传输。
本申请提供一种芯片，该芯片用于实现终端设备所执行的时域资源确定方法。其内容和效果可参考方法实施例部分，对此不再赘述。
本申请提供一种芯片，该芯片用于实现网络设备所执行的时域资源确定方法。其内容和效果可参考方法实施例部分，对此不再赘述。
本申请提供一种计算机存储介质，包括：计算机可执行指令，计算机可执行指令用于实现终端设备所执行的时域资源确定方法。其内容和效果可参考方法实施例部分，对此不再赘述。
本申请提供一种计算机存储介质，包括：计算机可执行指令，计算机可执行指令用于实现网络设备所执行的时域资源确定方法。其内容和效果可参考方法实施例部分，对此不再赘述。

Claims (24)

  1. 一种时域资源确定方法，其特征在于，包括：
    获取组-无线网络临时标识G-RNTI；
    在公共搜索空间检测第一下行控制信道，所述G-RNTI用于所述第一下行控制信道的加扰；
    获取第一时域资源分配信息，所述第一时域资源分配信息和所述G-RNTI具有关联关系；
    根据所述第一时域资源分配信息和所述第一下行控制信道确定第一下行数据信道的时域资源。
  2. 根据权利要求1所述的方法，其特征在于，还包括：
    获取终端设备的专用无线网络临时标识RNTI；
    在所述终端设备专用的搜索空间检测第二下行控制信道，所述专用RNTI用于第二下行控制信道的加扰；
    获取第二时域资源分配信息，所述第二时域资源分配信息和所述专用RNTI具有关联关系；
    根据所述第二时域资源分配信息和所述第二下行控制信道确定第二下行数据信道的时域资源；
    其中，所述第二下行控制信道中的混合自动重传请求HARQ进程号与所述第一下行控制信道中的HARQ进程号相同。
  3. 根据权利要求1或2所述的方法，其特征在于，所述根据所述第一时域资源分配信息和所述第一下行控制信道确定第一下行数据信道的时域资源，包括：
    根据所述第一下行控制信道上的时域资源分配信息域的值和所述第一时域资源分配信息确定所述第一下行数据信道的时域资源。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述第一时域资源分配信息是所述网络设备通过预定义、系统消息配置或者高层信令配置中的任一方式确定的。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述第一时域资源分配信息包括以下至少一项：时间单元偏移值、所述第一下行数据信道的起始和长度指示值SLIV、所述第一下行数据信道的映射类型；
    其中，所述时间单元偏移值为第二时间单元与第一时间单元的偏移，所述第一时间单元为接收所述第一下行控制信道的时间单元，所述第二时间单元为接收所述第一下行数据信道的时间单元。
  6. 一种时域资源确定方法，其特征在于，包括：
    配置组-无线网络临时标识G-RNTI；
    发送第一下行控制信道，所述G-RNTI用于所述第一下行控制信道的加扰；
    向终端设备发送第一时域资源分配信息，所述第一时域资源分配信息和所述G-RNTI具有关联关系。
  7. 根据权利要求6所述的方法，其特征在于，还包括：
    配置所述终端设备的专用无线网络临时标识RNTI；
    向所述终端设备发送第二下行控制信道，所述专用RNTI用于第二下行控制信道的加扰；
    向所述终端设备发送第二时域资源分配信息，所述第二时域资源分配信息和所述专用 RNTI具有关联关系；
    其中，所述第二下行控制信道中的混合自动重传请求HARQ进程号与所述第一下行控制信道中的HARQ进程号相同。
  8. 根据权利要求6或7所述的方法，其特征在于，所述第一时域资源分配信息是所述网络设备通过预定义、系统消息配置或者高层信令配置中的任一方式确定的。
  9. 根据权利要求6-8任一项所述的方法，其特征在于，所述第一时域资源分配信息包括以下至少一项：时间单元偏移值、所述第一下行数据信道的起始和长度指示值SLIV、所述第一下行数据信道的映射类型；
    其中，所述时间单元偏移值为第二时间单元与第一时间单元的偏移，所述第一时间单元为接收所述第一下行控制信道的时间单元，所述第二时间单元为接收所述第一下行数据信道的时间单元。
  10. 一种时域资源确定装置，其特征在于，包括：
    第一获取模块，用于获取组-无线网络临时标识G-RNTI；
    第一检测模块，用于在公共搜索空间检测第一下行控制信道，所述G-RNTI用于所述第一下行控制信道的加扰；
    第二获取模块，用于获取第一时域资源分配信息，所述第一时域资源分配信息和所述G-RNTI具有关联关系；
    第一确定模块，用于根据所述第一时域资源分配信息和所述第一下行控制信道确定第一下行数据信道的时域资源。
  11. 根据权利要求10所述的装置，其特征在于，还包括：
    第三获取模块，用于获取终端设备的专用无线网络临时标识RNTI；
    第二检测模块，用于在所述终端设备专用的搜索空间检测第二下行控制信道，所述专用RNTI用于第二下行控制信道的加扰；
    第四获取模块，用于获取第二时域资源分配信息，所述第二时域资源分配信息和所述专用RNTI具有关联关系；
    第二确定模块，用于根据所述第二时域资源分配信息和所述第二下行控制信道确定第二下行数据信道的时域资源；
    其中，所述第二下行控制信道中的混合自动重传请求HARQ进程号与所述第一下行控制信道中的HARQ进程号相同。
  12. 根据权利要求10或11所述的装置，其特征在于，所述第一确定模块具体用于：
    根据所述第一下行控制信道上的时域资源分配信息域的值和所述第一时域资源分配信息确定所述第一下行数据信道的时域资源。
  13. 根据权利要求10-12任一项所述的装置，其特征在于，所述第一时域资源分配信息是所述网络设备通过预定义、系统消息配置或者高层信令配置中的任一方式确定的。
  14. 根据权利要求10-13任一项所述的装置，其特征在于，所述第一时域资源分配信息包括以下至少一项：时间单元偏移值、所述第一下行数据信道的起始和长度指示值SLIV、所述第一下行数据信道的映射类型；
    其中，所述时间单元偏移值为第二时间单元与第一时间单元的偏移，所述第一时间单元为接收所述第一下行控制信道的时间单元，所述第二时间单元为接收所述第一下行数据 信道的时间单元。
  15. 一种时域资源确定装置，其特征在于，包括：
    第一配置模块，用于配置组-无线网络临时标识G-RNTI；
    第一发送模块，用于发送第一下行控制信道，所述G-RNTI用于所述第一下行控制信道的加扰；
    第二发送模块，用于向终端设备发送第一时域资源分配信息，所述第一时域资源分配信息和所述G-RNTI具有关联关系。
  16. 根据权利要求15所述的装置，其特征在于，还包括：
    第二配置模块，用于配置所述终端设备的专用无线网络临时标识RNTI；
    第三发送模块，用于向所述终端设备发送第二下行控制信道，所述专用RNTI用于第二下行控制信道的加扰；
    第四发送模块，用于向所述终端设备发送第二时域资源分配信息，所述第二时域资源分配信息和所述专用RNTI具有关联关系；
    其中，所述第二下行控制信道中的混合自动重传请求HARQ进程号与所述第一下行控制信道中的HARQ进程号相同。
  17. 根据权利要求15或16所述的装置，其特征在于，所述第一时域资源分配信息是所述网络设备通过预定义、系统消息配置或者高层信令配置中的任一方式确定的。
  18. 根据权利要求15-17任一项所述的装置，其特征在于，所述第一时域资源分配信息包括以下至少一项：时间单元偏移值、所述第一下行数据信道的起始和长度指示值SLIV、所述第一下行数据信道的映射类型；
    其中，所述时间单元偏移值为第二时间单元与第一时间单元的偏移，所述第一时间单元为接收所述第一下行控制信道的时间单元，所述第二时间单元为接收所述第一下行数据信道的时间单元。
  19. 一种终端设备，其特征在于，包括：存储器和处理器；
    所述存储器用于存储计算机指令，以使所述处理器执行所述计算机指令，以实现如权利要求1-5任一项所述的时域资源确定方法。
  20. 一种网络设备，其特征在于，包括：存储器和处理器；
    所述存储器用于存储计算机指令，以使所述处理器执行所述计算机指令，以实现如权利要求6-9任一项所述的时域资源确定方法。
  21. 一种芯片，其特征在于，所述芯片用于实现如权利要求1-5任一项所述的时域资源确定方法。
  22. 一种芯片，其特征在于，所述芯片用于实现如权利要求6-9任一项所述的时域资源确定方法。
  23. 一种计算机存储介质，其特征在于，包括：计算机可执行指令，所述计算机可执行指令用于实现如1-5任一项所述的时域资源确定方法。
  24. 一种计算机存储介质，其特征在于，包括：计算机可执行指令，所述计算机可执行指令用于实现如6-9任一项所述的时域资源确定方法。
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