WO2021138805A1 - Procédé et appareil de planification synchrone d'un service et dispositif de communication - Google Patents

Procédé et appareil de planification synchrone d'un service et dispositif de communication Download PDF

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Publication number
WO2021138805A1
WO2021138805A1 PCT/CN2020/070694 CN2020070694W WO2021138805A1 WO 2021138805 A1 WO2021138805 A1 WO 2021138805A1 CN 2020070694 W CN2020070694 W CN 2020070694W WO 2021138805 A1 WO2021138805 A1 WO 2021138805A1
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mbms
pdcch
information
scheduling
rnti
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PCT/CN2020/070694
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English (en)
Chinese (zh)
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王淑坤
卢前溪
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Oppo广东移动通信有限公司
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Priority to CN202080072877.5A priority Critical patent/CN114600473B/zh
Priority to PCT/CN2020/070694 priority patent/WO2021138805A1/fr
Publication of WO2021138805A1 publication Critical patent/WO2021138805A1/fr

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    • 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
    • H04W56/00—Synchronisation arrangements

Definitions

  • the embodiments of the application relate to the field of mobile communication technology, and in particular to a method and device for service synchronization scheduling, and communication equipment.
  • Multimedia Broadcast Multicast Service is a technology that transmits data from one data source to multiple users by sharing network resources. This technology can effectively use network resources while providing multimedia services to achieve better performance. Broadcast and multicast of high-speed (such as 256kbps) multimedia services.
  • NR New Radio
  • how to achieve synchronous transmission of content between two adjacent cells is a problem.
  • the embodiments of the present application provide a method and device for service synchronization scheduling, and communication equipment.
  • a distributed unit receives MBMS scheduling information sent by a central unit (Centralized Unit, CU);
  • the DU sends MBMS PDCCH and/or MBMS service data based on the MBMS scheduling information.
  • the CU sends MBMS scheduling information to at least one DU, where the MBMS scheduling information is used for each DU in the at least one DU to send MBMS PDCCH and/or MBMS service data.
  • the service synchronization scheduling device provided by the embodiment of the present application is applied to the DU, and the device includes:
  • the receiving unit is used to receive the MBMS scheduling information sent by the CU;
  • the sending unit is configured to send MBMS PDCCH and/or MBMS service data based on the MBMS scheduling information.
  • the service synchronization scheduling device provided by the embodiment of the present application is applied to a CU, and the device includes:
  • the sending unit is configured to send MBMS scheduling information to at least one DU, where the MBMS scheduling information is used for each DU in the at least one DU to send MBMS PDCCH and/or MBMS service data.
  • the communication device includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the aforementioned business synchronization scheduling method.
  • the chip provided in the embodiment of the present application is used to implement the foregoing service synchronization scheduling method.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned service synchronization scheduling method.
  • the computer-readable storage medium provided by the embodiments of the present application is used to store a computer program, and the computer program enables a computer to execute the foregoing business synchronization scheduling method.
  • the computer program product provided by the embodiment of the present application includes computer program instructions that cause a computer to execute the above-mentioned business synchronization scheduling method.
  • the computer program provided in the embodiment of the present application when it runs on a computer, causes the computer to execute the foregoing business synchronization scheduling method.
  • the CU configures MBMS scheduling information for at least one DU, so that each DU in at least one DU can send MBMS PDCCH and/or MBMS service data synchronously based on the same MBMS scheduling information, realizing synchronization of MBMS services Dynamic scheduling.
  • the synchronous transmission of content between cells when supporting MBMS service transmission in the NR system is realized, and the transmission reliability of MBMS service data at the cell edge is improved.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of Beam sweeping provided by an embodiment of the application
  • FIG. 3 is a schematic diagram of an SSB provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of the SSB burst set period provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of a first SIB related configuration provided by an embodiment of the present application.
  • Fig. 6 is a schematic diagram of a PTM configuration transmission mechanism provided by an embodiment of the present application.
  • Fig. 7 is a PTM channel and its mapping diagram provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a service synchronization scheduling method provided by an embodiment of the application.
  • FIG. 9 is a diagram of a network communication architecture provided by an embodiment of the application.
  • FIG. 10 is a schematic diagram 1 of the structural composition of a service synchronization scheduling apparatus provided by an embodiment of this application;
  • FIG. 11 is a schematic diagram 2 of the structural composition of the service synchronization scheduling apparatus provided by an embodiment of the application.
  • FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • FIG. 14 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • 5G communication system or future communication system etc.
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminals located in the coverage area.
  • the network device 110 may be an evolved base station (Evolutional Node B, eNB, or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or
  • the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network side device in a 5G network, or a network device in a future communication system, etc.
  • the communication system 100 also includes at least one terminal 120 located within the coverage area of the network device 110.
  • the "terminal” used here includes, but is not limited to, connection via a wired line, such as via a public switched telephone network (PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, and direct cable connection; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter; and/or a device of another terminal configured to receive/send communication signals; and/or an Internet of Things (IoT) device.
  • PSTN public switched telephone network
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscribe
  • a terminal set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal can refer to access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user Device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminals 120.
  • the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminals.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminals. This embodiment of the present application There is no restriction on this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal 120 with communication functions, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; communication
  • the device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • 5G Enhanced Mobile Broadband
  • URLLC Ultra-Reliable Low-Latency Communications
  • mMTC Massive Machine-Type Communications
  • eMBB still targets users to obtain multimedia content, services and data, and its demand is growing very rapidly.
  • eMBB may be deployed in different scenarios, such as indoors, urban areas, rural areas, etc., its capabilities and requirements are also quite different, so it cannot be generalized and must be analyzed in detail in conjunction with specific deployment scenarios.
  • Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), traffic safety protection, etc.
  • Typical features of mMTC include: high connection density, small data volume, delay-insensitive services, low-cost modules and long service life.
  • NR In the early deployment of NR, complete NR coverage is difficult to obtain, so the typical network coverage is wide-area LTE coverage and NR island coverage mode. Moreover, a large amount of LTE is deployed below 6GHz, and there is very little spectrum below 6GHz that can be used for 5G. Therefore, NR must study the spectrum application above 6GHz, and the high frequency band has limited coverage and fast signal fading. At the same time, in order to protect mobile operators' early investment in LTE, a tight interworking mode between LTE and NR is proposed.
  • RRC Radio Resource Control
  • RRC_INACTIVE Radio Resource Control
  • RRC_IDLE state (abbreviated as idle state): mobility is UE-based cell selection and reselection, paging is initiated by the Core Network (Core Network, CN), and the paging area is configured by the CN. There is no UE context and no RRC connection on the base station side.
  • RRC_CONNECTED state (referred to as connected state for short): There is an RRC connection, and UE context exists on the base station side and the UE side. The network side knows that the location of the UE is of a specific cell level. Mobility is the mobility controlled by the network side. Unicast data can be transmitted between the UE and the base station.
  • Mobility is UE-based cell selection and reselection, there is a connection between CN-NR, UE context is stored on a certain base station, and paging is triggered by RAN, based on The paging area of the RAN is managed by the RAN, and the network side knows that the location of the UE is based on the paging area level of the RAN.
  • 5G synchronization signals are given in the form of synchronization signal blocks (SS/PBCH block, SSB), including primary synchronization signals (Primary Synchronization Signal, PSS), The secondary synchronization signal (Secondary Synchronization Signal, SSS) and the physical broadcast channel (Physical Broadcast Channel, PBCH) are shown in Figure 3.
  • the 5G synchronization signal periodically appears in the time domain in the form of a synchronization signal burst set (SS burst), as shown in Figure 4.
  • the actual number of beams transmitted in each cell is determined by the network side configuration, but the frequency point where the cell is located determines the maximum number of beams that can be configured, as shown in Table 1 below.
  • Frequency Range L (the maximum number of beams) up to 3(2.4)GHz 4 3(2.4)GHz-6GHz 8 6GHz—52.6GHz 64
  • the maximum channel bandwidth in 5G can be 400MHz (ie, broadband). Compared with the maximum channel bandwidth of 20MHz in LTE, the maximum channel bandwidth in 5G is very large. If the UE keeps working on a broadband carrier (that is, the maximum channel bandwidth), the power consumption of the UE is very large. Therefore, it is recommended that the radio frequency bandwidth of the UE can be adjusted according to the actual throughput of the UE. For this reason, the concept of BWP is introduced. The motivation for introducing BWP is to optimize the power consumption of the UE. For example, the rate requirement of the UE is very low. You can configure the UE with a smaller bandwidth (that is, a BWP with a smaller bandwidth).
  • BWP bandwidth
  • a BWP with a larger bandwidth that is, a BWP with a larger bandwidth.
  • CA carrier aggregation
  • BWP1 corresponds to numerology1
  • BWP2 corresponds to numerology2.
  • An idle or inactive UE camps on the initial BWP (initial BWP).
  • the initial BWP is visible to the idle or inactive UE.
  • the UE can obtain the Master Information Block (MIB) on the initial BWP.
  • MIB Master Information Block
  • remaining minimum system information Remaining Minimum system Information, RMSI
  • other system information Other System Information, OSI
  • paging paging
  • MBMS was introduced in 3GPP Release 6 (Release 6, R6).
  • MBMS is a technology that transmits data from one data source to multiple UEs by sharing network resources. This technology can effectively utilize network resources while providing multimedia services. Realize the broadcast and multicast of multimedia services at a higher rate (such as 256kbps).
  • 3GPP Due to the low spectrum efficiency of MBMS in 3GPP R6, it is not sufficient to effectively carry and support the operation of mobile TV-type services. Therefore, in LTE, 3GPP clearly proposed to enhance the ability to support downlink high-speed MBMS services, and determined the design requirements for the physical layer and air interface.
  • eMBMS evolved MBMS
  • SFN Single Frequency Network
  • MBSFN Multimedia Broadcast Multicast Service Single Frequency Network
  • MBSFN uses a unified frequency to send service data in all cells at the same time, but To ensure synchronization between the cells. This method can greatly improve the overall signal-to-noise ratio distribution of the cell, and the spectrum efficiency will be greatly improved accordingly.
  • eMBMS realizes the broadcast and multicast of services based on the IP multicast protocol.
  • MBMS has only a broadcast bearer mode, and no multicast bearer mode.
  • reception of MBMS services is suitable for UEs in idle state or connected state.
  • 3GPP R13 introduced the single cell point to multipoint (Single Cell Point To Multiploint, SC-PTM) concept, and SC-PTM is based on the MBMS network architecture.
  • SC-PTM Single Cell Point To Multiploint
  • SC-MCCH Single Cell-Multicast Control Channel
  • SC-MTCH Single Cell-Multicast Transport Channel
  • SC-MCCH and SC-MTCH are mapped to downlink shared channel (Downlink-Shared Channel, DL-SCH), and further, DL-SCH is mapped to physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), where SC -MCCH and SC-MTCH belong to logical channels, DL-SCH belongs to transport channels, and PDSCH belongs to physical channels.
  • SC-MCCH and SC-MTCH do not support Hybrid Automatic Repeat reQuest (HARQ) operations.
  • HARQ Hybrid Automatic Repeat reQuest
  • the MBMS introduces a new type of System Information Block (SIB), namely SIB20.
  • SIB System Information Block
  • the configuration information of the SC-MCCH includes: the modification period of the SC-MCCH, the repetition period of the SC-MCCH, and information such as radio frames and subframes for scheduling the SC-MCCH.
  • SFN represents the system frame number of the radio frame
  • mcch-RepetitionPeriod represents the repetition period of SC-MCCH
  • mcch-Offset represents SC-MCCH The offset.
  • the subframe for scheduling SC-MCCH is indicated by sc-mcch-Subframe.
  • the SC-MCCH is scheduled through the Physical Downlink Control Channel (PDCCH).
  • a new radio network temporary identity Radio Network Tempory Identity, RNTI
  • SC-RNTI Single Cell RNTI
  • SC-N-RNTI Single Cell Notification RNTI
  • the SC -N-RNTI has a fixed value of FFFB; further, one of the 8 bits (bits) of DCI 1C can be used to indicate the change notification.
  • the configuration information of the SC-PTM is based on the SC-MCCH configured by the SIB20, and then the SC-MCCH is configured with the SC-MTCH, and the SC-MTCH is used to transmit service data.
  • the SC-MCCH only transmits one message (that is, SCPTMConfiguration), which is used to configure the configuration information of the SC-PTM.
  • the configuration information of SC-PTM includes: Temporary Mobile Group Identity (TMGI), session identifier (seession id), group RNTI (Group RNTI, G-RNTI), discontinuous reception (Discontinuous Reception, DRX) configuration information And the SC-PTM business information of the neighboring cell, etc.
  • TMGI Temporary Mobile Group Identity
  • SCPTMConfiguration Session id
  • group RNTI Group RNTI
  • G-RNTI Group RNTI
  • DRX discontinuous reception
  • the SC-PTM business information of the neighboring cell etc.
  • ROHC Robust Header Compression
  • the downlink discontinuous reception of SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-SchedulingCycle, and SC-MTCH-SchedulingOffset.
  • SC-PTM service continuity adopts the concept of MBMS service continuity based on SIB15, namely "SIB15+MBMSInterestIndication" mode.
  • the service continuity of the idle UE is based on the concept of frequency priority.
  • the first SIB includes the configuration information of the first MCCH.
  • the first MCCH is the control channel of the MBMS service.
  • the first SIB is used to configure the configuration information of the control channel of NR MBMS.
  • the control channel of NR MBMS may also be called NR MCCH (that is, the first MCCH).
  • the first MCCH is used to carry the first signaling.
  • the embodiment of the present application does not limit the name of the first signaling.
  • the first signaling is signaling A
  • the first signaling includes at least one first MTCH.
  • the first MTCH is a service channel of the MBMS service (also referred to as a data channel or transmission channel), and the first MTCH is used to transmit MBMS service data (such as NR MBMS service data).
  • the first MCCH is used to configure the configuration information of the NR MBMS traffic channel.
  • the NR MBMS traffic channel may also be called NR MTCH (that is, the first MTCH).
  • the first signaling is used to configure a NR MBMS service channel, service information corresponding to the service channel, and scheduling information corresponding to the service channel.
  • the service information corresponding to the service channel such as TMGI, session id, and other service identification information identifying the service.
  • the scheduling information corresponding to the traffic channel for example, the RNTI used when the MBMS service data corresponding to the traffic channel is scheduled, such as G-RNTI, DRX configuration information, and so on.
  • the transmission of the first MCCH and the first MTCH is scheduled based on the PDCCH.
  • the RNTI used for scheduling the PDCCH of the first MCCH uses a unique identifier of the entire network, that is, a fixed value.
  • the RNTI used by the PDCCH for scheduling the first MTCH is configured through the first MCCH.
  • the embodiment of the present application does not impose restrictions on the naming of the first SIB, the first MCCH, and the first MTCH.
  • the first SIB may also be abbreviated as SIB
  • the first MCCH may also be abbreviated as MCCH
  • the first MTCH may also be abbreviated as MTCH.
  • the PDCCH for scheduling MCCH is configured through SIB (Ie MCCH PDCCH) and notification PDCCH, wherein the DCI carried by the MCCH PDCCH is used to schedule the PDSCH (ie MCCH PDSCH) used to transmit the MCCH.
  • M PDCCHs (that is, MTCH 1 PDCCH, MTCH 2 PDCCH, ..., MTCH M PDCCH) are configured through the MCCH, where the DCI carried by the MTCH n PDCCH schedules the PDSCH used to transmit the MTCH n (that is, the MTCH n PDSCH), n is an integer greater than or equal to 1 and less than or equal to M.
  • MCCH and MTCH are mapped to DL-SCH, and further, DL-SCH is mapped to PDSCH, where MCCH and MTCH belong to logical channels, DL-SCH belongs to transport channels, and PDSCH belongs to physical channels.
  • the network side has a CU and DU separated architecture, which can be regarded as a network device including a CU and at least one DU.
  • the MBMS-related configuration is configured by the CU for each DU in the at least one DU.
  • the MBMS-related configuration configured by the CU for the multiple DUs is the same.
  • Different DUs can cover different cells.
  • the cells covered by multiple DUs belonging to the same CU are neighboring cells.
  • the content synchronization between neighboring cells can be implemented by using the DU to send MBMS scheduling information to at least one of its associated CUs, which is described in detail below.
  • FIG. 8 is a schematic flowchart of a service synchronization scheduling method provided by an embodiment of the application. As shown in FIG. 8, the service synchronization scheduling method includes the following steps:
  • Step 801 The CU sends MBMS scheduling information to at least one DU, and the DU receives the MBMS scheduling information sent by the CU.
  • Step 802 The DU sends MBMS PDCCH and/or MBMS service data based on the MBMS scheduling information.
  • the network side adopts a CU and DU separation architecture, where both CU and DU belong to entities on the base station side, and one CU may be associated with one or more DUs.
  • the protocol stack responsible for the CU includes: SDAP layer and PDCP layer.
  • the protocol stack that DU is responsible for includes: RLC layer, MAC layer and PHY layer.
  • the base station is a gNB
  • the CU may also be referred to as gNB CU
  • the DU may also be referred to as gNB DU.
  • the gNB CU and the core network side transmit MBMS service data through a GTP tunnel.
  • the gNB CU and gNB DU1 and gNB DU2 also transmit MBMS service data through the GTP tunnel.
  • DU1 and DU2 send MBMS service data, so that the terminal device can receive the MBMS service data.
  • the CU may configure MBMS PDCCH resource configuration information (may be referred to as pre-configuration information) for at least one DU in advance. Specifically, the CU sends MBMS PDCCH resource configuration information to the at least one DU,
  • the DU receives MBMS PDCCH resource configuration information sent by the CU, where the MBMS PDCCH resource configuration information includes at least one of the following:
  • MBMS search space (MBMS search Space) configuration
  • MBMS service information associated with the MBMS PDCCH resource configuration information for example, MBMS service identification information
  • the gNB CU pre-configures the MBMS PDCCH resource configuration information to each of the at least one DU through the F1 interface.
  • the F1 interface is the interface between gNB CU and gNB DU.
  • the MBMS PDCCH resource configuration information may be associated with one or more MBMS service information, where each MBMS service information is associated with one MBMS service.
  • the scheduling period configuration of the MBMS PDCCH resource is used to determine the MBMS PDCCH time window; the scheduling period configuration of the MBMS PDCCH resource includes at least one of the following:
  • the duration of the MBMS PDCCH time window is the duration of the MBMS PDCCH time window.
  • the MBMS PDCCH time window appears periodically in the time domain, and the time domain resources in the MBMS PDCCH time window are used to transmit the MBMS PDCCH.
  • the scheduling period configuration of the MBMS PDCCH resource further includes: MBMS service information associated with the MBMS PDCCH time window.
  • MBMS service information of the first MBMS service associated with the first MBMS PDCCH time window For example: MBMS service information of the first MBMS service associated with the first MBMS PDCCH time window, and MBMS service information of the second MBMS service associated with the second MBMS PDCCH time window.
  • the CU may also dynamically send MBMS scheduling information to the at least one DU.
  • the DU receives The MBMS scheduling information sent by the CU.
  • the MBMS scheduling information includes at least one of the following:
  • the G-RNTI information is used to scramble MBMS PDCCH.
  • the MBMS service scheduling information includes but is not limited to at least one of the following: time domain location information of the MBMS service, frequency domain location information of the MBMS service, MCS of the MBMS service, and TB size of the MBMS service.
  • the resource information of the MBMS PDCCH includes at least one of the following:
  • the identification information (such as CORSET id) of the MBMS CORESET where the MBMS PDCCH is located;
  • Identification information (such as search space id) of the MBMS search Space where the MBMS PDCCH is located;
  • MBMS PDCCH location information in time domain MBMS PDCCH location information in time domain.
  • the time domain location information where the MBMS PDCCH is located includes at least one of the following:
  • MBMS PDCCH can occupy one or more PDCCH occasions; alternatively, for the case where MBMS PDCCH occupies multiple PDCCH occasions, multiple PDCCH occasions can be consecutive multiple PDCCH occasions; here, if MBMS PDCCH occupies more occasions For each PDCCH occurrence, the SSB index information associated with each PDCCH occurrence needs to be given.
  • the PDCCH occurrences are periodically distributed in a certain time range and/or spectrum range, and are numbered according to certain rules. Further, optionally, one MBMS occasion may include several symbols or several time slots.
  • the CU configures G-RNTI information for scheduling the service for each MBMS service, where different G-RNTI information is associated with different MBMS services.
  • different G-RNTI information is associated with different MBMS services.
  • Manner 1 If the DU determines that the G-RNTI information allocated for the first MBMS service has been allocated to the second MBMS service, the DU requests the CU to re-allocate G-RNTI information for the first MBMS service Or, the DU requests the CU to change the G-RNTI information associated with the second MBMS service.
  • the allocated G-RNTI information of the first MBMS service has been allocated to the second MBMS service means: the value of the allocated G-RNTI information of the first MBMS service has been occupied by the G-RNTI of the second MBMS service .
  • Manner 2 If the DU determines that the G-RNTI information allocated for the first MBMS service has been allocated to the first user, the DU requests the CU to re-allocate the G-RNTI information for the first MBMS service, Alternatively, the DU requests the CU to change the RNTI information used by the first user, or the DU changes the RNTI information used by the first user.
  • the RNTI information used by the first user may be C-RNTI information.
  • the allocated G-RNTI information of the first MBMS service has been allocated to the first user means that the value of the allocated G-RNTI information of the first MBMS service has been occupied by the C-RNTI of the first user.
  • Manner 3 The DU receives first indication information sent by the CU, where the first indication information is used to indicate the value range of G-RNTI; wherein, the value of the G-RNTI information in the MBMS scheduling information The value belongs to the value range.
  • the CU configures a value range for the DU, and the values within the value range are only used to configure the G-RNTI. In this way, conflicts between the values of other RNTIs and the values of G-RNTI can be avoided.
  • the DU after obtaining the MBMS scheduling information, the DU sends the MBMS PDCCH and/or MBMS service data based on the MBMS scheduling information, which will be described in detail below.
  • Control plane MBMS PDCCH transmission
  • the DU scrambles the MBMS PDCCH based on the G-RNTI information, where the MBMS PDCCH carries the MBMS service scheduling information; the DU is based on the resource information of the MBMS PDCCH and is located at a designated resource location Send the scrambled MBMS PDCCH.
  • the DU after the DU scrambles the MBMS PDCCH based on the G-RNTI information, it needs to undergo physical layer processing before it is sent on the designated resource location.
  • the physical layer processing includes, but is not limited to, modulation and coding processing.
  • the DU After the DU receives the MBMS service data sent by the CU, it determines the MBMS service scheduling information that matches the MBMS service data; the DU performs data on the MBMS service data based on the matched MBMS service scheduling information Processing, and sending the processed MBMS service data on the designated resource location.
  • the matched MBMS service scheduling information is:
  • the last MBMS service scheduling information received by the DU from the CU before the DU receives the MBMS service data; or,
  • the first MBMS service scheduling information received by the DU from the CU after receiving the MBMS service data or,
  • the first unused MBMS service scheduling information received by the DU from the CU is the first unused MBMS service scheduling information received by the DU from the CU.
  • the gNB CU sends MBMS service data to the DU through the GTP tunnel.
  • the GTP tunnel is specifically an F1GTP tunnel.
  • the gNB DU receives the MBMS service data, it has the following three processing methods:
  • the gNB DU matches the newly received MBMS service data to the latest MBMS service scheduling information from the gNB CU (that is, the last MBMS service scheduling information received from the CU before receiving the MBMS service data), and uses the MBMS
  • the service scheduling information performs physical layer processing on the MBMS service data, and sends the processed MBMS service data according to the time-frequency resources given by the MBMS service scheduling information.
  • the physical layer processing includes, but is not limited to, modulation and coding processing.
  • the gNB DU matches the newly received MBMS service data to the first MBMS service scheduling information after the MBMS service data from the gNB CU (that is, the first MBMS service received from the CU after receiving the MBMS service data) Scheduling information), using the MBMS service scheduling information to perform physical layer processing on the MBMS service data, and sending the processed MBMS service data according to the time-frequency resources given according to the MBMS service scheduling information.
  • the physical layer processing includes, but is not limited to, modulation and coding processing.
  • gNB DU matches the newly received MBMS service data to the first unused MBMS service scheduling information from gNB CU (that is, the oldest unused MBMS service scheduling information), and uses this MBMS service
  • the scheduling information performs physical layer processing on the MBMS service data, and sends the processed MBMS service data according to the time-frequency resources given by the MBMS service scheduling information.
  • the physical layer processing includes, but is not limited to, modulation and coding processing.
  • the DU receives a CSI report sent by at least one terminal device, and the at least one terminal device belongs to a receiving group of the MBMS service data.
  • the DU determines the recommended MBMS scheduling information, and sends the recommended MBMS scheduling information to the CU; wherein, the recommended MBMS scheduling information is used for the CU to adjust the direction MBMS scheduling information issued by the DU. Further, optionally, the DU determines recommended MBMS scheduling information based on the received CSI report.
  • the terminal device can feed back the channel quality to the gNB DU during the period of receiving the MBMS service data, that is, the terminal device reports the CSI report to the DU.
  • the gNB DU receives the CSI report sent by the terminal device, it gives the recommended MBMS scheduling information according to the CSI report fed back by one or more terminal devices in the MBMS service receiving group, and sends the recommended MBMS scheduling information to gNB CU.
  • the gNB CU determines the MBMS scheduling information according to the recommended MBMS scheduling information sent by one or more gNB DUs, and sends it to the gNB DU for scheduling new MBMS service data.
  • multiple DUs receive the MBMS scheduling information sent by the CU, and send MBMS PDCCH and/or MBMS service data based on the MBMS scheduling information, thereby achieving content synchronization between neighboring cells.
  • FIG. 10 is a schematic diagram 1 of the structural composition of a service synchronization scheduling device provided by an embodiment of the application, which is applied to a DU.
  • the service synchronization scheduling device includes:
  • the receiving unit 1001 is configured to receive MBMS scheduling information sent by the CU;
  • the sending unit 1002 is configured to send MBMS PDCCH and/or MBMS service data based on the MBMS scheduling information.
  • the receiving unit 1001 is further configured to receive MBMS PDCCH resource configuration information sent by the CU, where the MBMS PDCCH resource configuration information includes at least one of the following:
  • the scheduling period configuration of the MBMS PDCCH resource is used to determine the MBMS PDCCH time window
  • the scheduling period configuration of the MBMS PDCCH resource includes at least one of the following:
  • the length of the MBMS PDCCH time window is the length of the MBMS PDCCH time window.
  • the scheduling period configuration of the MBMS PDCCH resource further includes:
  • the MBMS scheduling information includes at least one of the following:
  • the G-RNTI information is used to scramble MBMS PDCCH.
  • the resource information of the MBMS PDCCH includes at least one of the following:
  • the identification information of the MBMS search Space where the MBMS PDCCH is located is located;
  • MBMS PDCCH location information in time domain MBMS PDCCH location information in time domain.
  • the time domain location information where the MBMS PDCCH is located includes at least one of the following:
  • different G-RNTI information is associated with different MBMS services; the apparatus further includes:
  • the replacement unit (not shown in the figure) is used to request the CU to re-allocate G for the first MBMS service if it is determined that the G-RNTI information allocated for the first MBMS service has been allocated to the second MBMS service. -RNTI information, or request the CU to change the G-RNTI information associated with the second MBMS service.
  • the device further includes:
  • the replacement unit (not shown in the figure) is used to request the CU to re-allocate G-RNTI information for the first MBMS service if it is determined that the G-RNTI information allocated for the first MBMS service has been allocated to the first user.
  • RNTI information or request the CU to change the RNTI information used by the first user, or change the RNTI information used by the first user.
  • the receiving unit 1001 is further configured to receive first indication information sent by the CU, where the first indication information is used to indicate the value range of G-RNTI; wherein, the MBMS The value of the G-RNTI information in the scheduling information belongs to the value range.
  • the device further includes:
  • the processing unit 1003 is configured to scramble the MBMS PDCCH based on the G-RNTI information, where the MBMS PDCCH carries the MBMS service scheduling information;
  • the sending unit 1002 is configured to send the scrambled MBMS PDCCH at a designated resource location based on the resource information of the MBMS PDCCH.
  • the device further includes:
  • the processing unit 1003 is configured to determine MBMS service scheduling information that matches the MBMS service data; perform data processing on the MBMS service data based on the matched MBMS service scheduling information;
  • the sending unit 1002 is configured to send the processed MBMS service data at a designated resource location.
  • the matched MBMS service scheduling information is:
  • the last MBMS service scheduling information received by the DU from the CU before the DU receives the MBMS service data; or,
  • the first MBMS service scheduling information received by the DU from the CU after receiving the MBMS service data or,
  • the first unused MBMS service scheduling information received by the DU from the CU is the first unused MBMS service scheduling information received by the DU from the CU.
  • the receiving unit 1001 is further configured to receive a CSI report sent by at least one terminal device, and the at least one terminal device belongs to the MBMS service data receiving group.
  • the device further includes:
  • the determining unit 1004 is used to determine recommended MBMS scheduling information
  • the sending unit 1002 is further configured to send the recommended MBMS scheduling information to the CU; wherein the recommended MBMS scheduling information is used by the CU to adjust the MBMS scheduling information delivered to the DU.
  • FIG. 11 is a schematic diagram 2 of the structural composition of a service synchronization scheduling device provided by an embodiment of the application, which is applied to a CU.
  • the service synchronization scheduling device includes:
  • the sending unit 1101 is configured to send MBMS scheduling information to at least one DU, where the MBMS scheduling information is used for each DU in the at least one DU to send MBMS PDCCH and/or MBMS service data.
  • the sending unit 1101 is further configured to send MBMS PDCCH resource configuration information to the at least one DU, where the MBMS PDCCH resource configuration information includes at least one of the following:
  • the scheduling period configuration of the MBMS PDCCH resource is used to determine the MBMS PDCCH time window
  • the scheduling period configuration of the MBMS PDCCH resource includes at least one of the following:
  • the length of the MBMS PDCCH time window is the length of the MBMS PDCCH time window.
  • the scheduling period configuration of the MBMS PDCCH resource further includes:
  • the MBMS scheduling information includes at least one of the following:
  • the G-RNTI information is used to scramble MBMS PDCCH.
  • the resource information of the MBMS PDCCH includes at least one of the following:
  • the identification information of the MBMS search Space where the MBMS PDCCH is located is located;
  • MBMS PDCCH location information in time domain MBMS PDCCH location information in time domain.
  • the time domain location information where the MBMS PDCCH is located includes at least one of the following:
  • different G-RNTI information is associated with different MBMS services
  • the sending unit 1101 is further configured to send first indication information to the at least one DU, where the first indication information is used to indicate the value range of G-RNTI; wherein, the G-RNTI in the MBMS scheduling information -The value of the RNTI information belongs to the value range.
  • the device further includes:
  • the receiving unit 1102 is configured to receive recommended MBMS scheduling information sent by the at least one DU;
  • the adjusting unit 1103 is configured to adjust the MBMS scheduling information delivered to the DU based on the recommended MBMS scheduling information.
  • FIG. 12 is a schematic structural diagram of a communication device 1200 provided by an embodiment of the present application.
  • the communication device may be a terminal device or a network device.
  • the communication device 1200 shown in FIG. 12 includes a processor 1210, and the processor 1210 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 1200 may further include a memory 1220.
  • the processor 1210 can call and run a computer program from the memory 1220 to implement the method in the embodiment of the present application.
  • the memory 1220 may be a separate device independent of the processor 1210, or may be integrated in the processor 1210.
  • the communication device 1200 may further include a transceiver 1230, and the processor 1210 may control the transceiver 1230 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 1230 may include a transmitter and a receiver.
  • the transceiver 1230 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 1200 may specifically be a network device of an embodiment of the present application, and the communication device 1200 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, details are not repeated here. .
  • the communication device 1200 may specifically be a mobile terminal/terminal device of an embodiment of the present application, and the communication device 1200 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • FIG. 13 is a schematic structural diagram of a chip of an embodiment of the present application.
  • the chip 1300 shown in FIG. 13 includes a processor 1310, and the processor 1310 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 1300 may further include a memory 1320.
  • the processor 1310 can call and run a computer program from the memory 1320 to implement the method in the embodiment of the present application.
  • the memory 1320 may be a separate device independent of the processor 1310, or may be integrated in the processor 1310.
  • the chip 1300 may further include an input interface 1330.
  • the processor 1310 can control the input interface 1330 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 1300 may further include an output interface 1340.
  • the processor 1310 can control the output interface 1340 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be called a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.
  • FIG. 14 is a schematic block diagram of a communication system 1400 according to an embodiment of the present application. As shown in FIG. 14, the communication system 1400 includes a terminal device 1410 and a network device 1420.
  • the terminal device 1410 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 1420 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application For the sake of brevity, I won’t repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For the sake of brevity, I will not repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé et sur un appareil de planification synchrone d'un service, ainsi que sur un dispositif de communication. Le procédé comprend : une unité distribuée (DU) reçoit des informations de planification de service MBMS envoyées par une unité centralisée (CU) ; et l'unité DU envoie un canal PDCCH de service MBMS et/ou des données de service MBMS selon les informations de planification de service MBMS.
PCT/CN2020/070694 2020-01-07 2020-01-07 Procédé et appareil de planification synchrone d'un service et dispositif de communication WO2021138805A1 (fr)

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