WO2023197172A1 - Procédé et appareil de synchronisation de transmission, et support d'enregistrement - Google Patents

Procédé et appareil de synchronisation de transmission, et support d'enregistrement Download PDF

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Publication number
WO2023197172A1
WO2023197172A1 PCT/CN2022/086434 CN2022086434W WO2023197172A1 WO 2023197172 A1 WO2023197172 A1 WO 2023197172A1 CN 2022086434 W CN2022086434 W CN 2022086434W WO 2023197172 A1 WO2023197172 A1 WO 2023197172A1
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Prior art keywords
synchronization
pdsch transmission
transmission
dci
information
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PCT/CN2022/086434
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English (en)
Chinese (zh)
Inventor
刘晓菲
吴昱民
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北京小米移动软件有限公司
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Priority to CN202280001119.3A priority Critical patent/CN117223304A/zh
Priority to PCT/CN2022/086434 priority patent/WO2023197172A1/fr
Publication of WO2023197172A1 publication Critical patent/WO2023197172A1/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

Definitions

  • the present disclosure relates to the field of communications, and in particular to transmission synchronization methods and devices, and storage media.
  • version 17 (Release 17, R17) only supports multicast broadcast service (MBS) synchronization in the intra-Distributed Unit (intra-DU) scenario, that is, for single-frequency networks (Single- Frequency Network, SFN) MBS synchronization.
  • MBS multicast broadcast service
  • embodiments of the present disclosure provide a transmission synchronization method and device, and a storage medium.
  • a transmission synchronization method is provided, and the method is applied to a second network side node, including:
  • the PDSCH transmission synchronization includes at least one of the following:
  • the PDSCH transmission corresponding to the MBS transmission channel MTCH transmission is synchronized
  • the MBS control channel MCCH transmission corresponds to the PDSCH transmission synchronization.
  • the MTCH transmission includes at least one of the following:
  • the MCCH transmission at least includes:
  • the PDSCH transmission synchronization includes at least one of the following:
  • PDSCH transmission resource configuration information is synchronized.
  • the PDSCH transmission resources include at least one of the following:
  • Time domain resources frequency domain resources, air domain resources, coding methods and parameter set numerology.
  • the PDSCH transmission resource configuration information synchronization includes PDSCH transmission resource scheduling information synchronization.
  • PDSCH transmission resource scheduling corresponds to any of the following scheduling methods:
  • the PDSCH transmission scheduling information is carried through downlink control information DCI;
  • the PDSCH transmission scheduling information is carried through RRC signaling.
  • the PDSCH transmission resource scheduling information synchronization includes at least one of the following:
  • Time information synchronization wherein the time information includes at least one of the following: system frame number, subframe number, and time slot number;
  • the second RRC configuration information carrying the PDSCH transmission scheduling information is synchronized.
  • the first RRC configuration information synchronization includes at least one of the following:
  • Designated wireless network temporary identifier RNTI synchronization wherein the designated RNTI includes an RNTI used to activate or deactivate the PDSCH transmission resource configuration information, and/or an RNTI used to retransmit the PDSCH transmission resource configuration information;
  • the configuration period corresponding to the PDSCH transmission resource configuration information is synchronized.
  • the second RRC configuration information synchronization includes at least one of the following:
  • Designated RNTI synchronization wherein the designated RNTI includes an RNTI used to activate or deactivate the PDSCH transmission resource configuration information, and/or an RNTI used to retransmit the PDSCH transmission resource configuration information;
  • the configuration period corresponding to the PDSCH transmission resource configuration information is synchronized
  • the content of the PDSCH transmission resource configuration information is synchronized.
  • the DCI synchronization includes at least one of the following:
  • the DCI transmission content synchronization includes DCI transmission information synchronization; or,
  • the DCI transmission content synchronization includes DCI format synchronization and DCI transmission information synchronization.
  • the DCI transmission resources include at least one of the following:
  • Time domain resources frequency domain resources, air domain resources, coding methods and numerology.
  • the method also includes:
  • the configuration information is used to indicate at least one of the following:
  • DCI synchronization is performed in each scheduled time slot
  • sending synchronization control information to at least one first network side node includes:
  • the synchronization control information is sent to at least one of the first network side nodes through inter-node signaling; wherein the synchronization control information is used to control at least one of the first network side nodes to perform PDSCH transmission content synchronization, first RRC At least one of configuration information synchronization, second RRC configuration information synchronization, and DCI synchronization.
  • a service synchronization method is provided, which method is applied to a first network side node and includes:
  • the PDSCH transmission synchronization is performed.
  • the PDSCH transmission synchronization includes at least one of the following:
  • the PDSCH transmission corresponding to the MBS transmission channel MTCH transmission is synchronized
  • the MBS control channel MCCH transmission corresponds to the PDSCH transmission synchronization.
  • the MTCH transmission includes at least one of the following:
  • the MCCH transmission at least includes:
  • the PDSCH transmission synchronization includes at least one of the following:
  • PDSCH transmission resource configuration information is synchronized.
  • the PDSCH transmission resources include at least one of the following:
  • Time domain resources frequency domain resources, air domain resources, coding methods and parameter set numerology.
  • the PDSCH transmission resource configuration information synchronization includes PDSCH transmission resource scheduling information synchronization.
  • PDSCH transmission resource scheduling corresponds to any of the following scheduling methods:
  • the PDSCH transmission scheduling information is carried through downlink control information DCI;
  • the PDSCH transmission scheduling information is carried through RRC signaling.
  • the PDSCH transmission resource scheduling information synchronization includes at least one of the following:
  • Time information synchronization wherein the time information includes at least one of the following: system frame number, subframe number, and time slot number;
  • the second RRC configuration information carrying the PDSCH transmission scheduling information is synchronized.
  • the first RRC configuration information synchronization includes at least one of the following:
  • Designated wireless network temporary identifier RNTI synchronization wherein the designated RNTI includes an RNTI used to activate or deactivate the PDSCH transmission resource configuration information, and/or an RNTI used to retransmit the PDSCH transmission resource configuration information;
  • the configuration period corresponding to the PDSCH transmission resource configuration information is synchronized.
  • the second RRC configuration information synchronization includes at least one of the following:
  • Designated RNTI synchronization wherein the designated RNTI includes an RNTI used to activate or deactivate the PDSCH transmission resource configuration information, and/or an RNTI used to retransmit the PDSCH transmission resource configuration information;
  • the configuration period corresponding to the PDSCH transmission resource configuration information is synchronized
  • the content of the PDSCH transmission resource configuration information is synchronized.
  • the DCI synchronization includes at least one of the following:
  • the DCI transmission content synchronization includes DCI transmission information synchronization; or,
  • the DCI transmission content synchronization includes DCI format synchronization and DCI transmission information synchronization.
  • the DCI transmission resources include at least one of the following:
  • Time domain resources frequency domain resources, air domain resources, coding methods and numerology.
  • the method also includes:
  • a period for DCI synchronization is determined.
  • the configuration information is used to indicate at least one of the following:
  • DCI synchronization is performed in each scheduled time slot
  • the receiving the synchronization control information sent by the second network side node includes:
  • the present disclosure can control at least one first network side node by the second network side node to achieve PDSCH transmission synchronization corresponding to the MBS, realize MBS synchronization under the NR system, support wide area service deployment, expand SFN transmission scenarios, and improve cell edge Performance and spectrum utilization, high availability.
  • Figure 1 is a schematic flowchart of a transmission synchronization method according to an exemplary embodiment.
  • Figure 2 is a schematic flowchart of another transmission synchronization method according to an exemplary embodiment.
  • Figure 3 is a schematic flowchart of another transmission synchronization method according to an exemplary embodiment.
  • Figure 4 is a schematic flowchart of another transmission synchronization method according to an exemplary embodiment.
  • Figure 5 is a block diagram of a transmission synchronization device according to an exemplary embodiment.
  • Figure 6 is a block diagram of another transmission synchronization device according to an exemplary embodiment.
  • FIG. 7 is a schematic structural diagram of a transmission synchronization device according to an exemplary embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another transmission synchronization device according to an exemplary embodiment of the present disclosure.
  • first, second, third, etc. may be used in this disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other.
  • first information may also be called second information, and similarly, the second information may also be called first information.
  • word “if” as used herein may be interpreted as "when” or “when” or “in response to determining.”
  • MBS services can be marked by MBS service identifiers.
  • MBS service identifiers include at least one of the following: Temporary mobile group identifier (Temporary Mobile Group Identity, TMGI), MBS session ID (MBS Session ID), MBS business flow ID (MBS QoS flow ID).
  • the transmission modes of MBS services include the following two:
  • the terminal In transmission mode one (multicast transmission), the terminal enters the radio resource control connected state (RRC_CONNECTED) to receive the transmission configuration information of the MBS service, so that it can receive the MBS service.
  • the network side device sends the reception configuration information of the MBS service to the terminal through terminal-specific signaling.
  • the terminal can receive the transmission configuration information of the MBS service in the idle state (IDLE), the inactive state (INACTIVE), or the connected state (CONNECTED), and receive the MBS service.
  • the network side device sends the MBS service reception configuration information to the terminal through system information and MBS Control Channel (MBS Control Channel, MCCH) information.
  • the system information can be a System Information Block (SIB).
  • the present disclosure provides the following transmission synchronization method, device and storage medium.
  • the transmission synchronization method provided by the present disclosure will be introduced below from the second network side node side.
  • FIG. 1 is a flow chart of a transmission synchronization method according to an embodiment, which can be used for a second network side node, wherein the second network side
  • the node may be a base station, a centralized unit (Centralized Unit, CU), a distributed unit (Distributed Unit, DU), or a network side node independent of the above-mentioned nodes, such as an MBS master control node.
  • This disclosure does not limit this.
  • the method may include Following steps:
  • step 101 synchronization control information is sent to at least one first network side node.
  • the first network side node may be a CU or a DU.
  • the synchronization control information is used to control at least one of the first network side nodes to perform physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) transmission synchronization, and the PDSCH corresponds to the MBS.
  • PDSCH Physical Downlink Shared Channel
  • the method may be applied in NR or post-NR communication systems.
  • the second network side node can control at least one first network side node to achieve PDSCH transmission synchronization corresponding to the MBS, realize MBS synchronization under the NR system, support wide area service deployment, expand SFN transmission scenarios, and improve Improved cell edge performance and spectrum utilization, high availability.
  • the PDSCH transmission synchronization includes at least one of the following: MBS Transmission Channel (MBS Transmission Channel, MTCH) transmission corresponding PDSCH transmission synchronization; MBS Control Channel (MBS Control Channel, MCCH) transmission corresponding PDSCH Transmission synchronization.
  • MBS Transmission Channel MBS Transmission Channel
  • MBS Control Channel MBS Control Channel
  • the MTCH transmission includes at least one of the following: MTCH transmission corresponding to the multicast service; MTCH transmission corresponding to the broadcast service.
  • the MCCH transmission at least includes: MCCH transmission corresponding to the broadcast service.
  • PDSCH transmission synchronization includes at least one of the following: PDSCH transmission content synchronization; PDSCH transmission resource configuration information synchronization.
  • the PDSCH transmission resources include at least one of the following: time domain resources, frequency domain resources, air domain resources, coding method and parameter set (numerology).
  • time domain resources include but are not limited to at least one of the following: Searching Space (SS), System Frame Number (SFN), subframe, and time slot (slot) , period, starting position.
  • SS Searching Space
  • SFN System Frame Number
  • Slot time slot
  • Frequency domain resources include but are not limited to at least one of the following: Control Resource Set (CORESET), frequency, bandwidth, reference point A (point-A), partial bandwidth (Bandwidth Part, BWP) ), cell identifier (Cell-ID), physical cell identifier (Physical Cell Identifier, PCI).
  • CORESET Control Resource Set
  • point-A reference point A
  • BWP partial bandwidth
  • BWP Bandwidth Part
  • Cell-ID cell identifier
  • PCI Physical Cell Identifier
  • Airspace resources include but are not limited to Transmission Configuration Index (TCI) status, such as related synchronization signal blocks (Synchronization Signal and PBCH block, SSB), Channel State Information Reference Signal (Channel State Information-Reference Signal, CSI-RS) .
  • TCI Transmission Configuration Index
  • SSB Synchronization Signal and PBCH block
  • CSI-RS Channel State Information Reference Signal
  • Coding methods include but are not limited to Radio Network Temporary Identity (RNTI), DCI format, Demodulation Reference Signal (DMRS), scrambling code, etc.
  • RNTI Radio Network Temporary Identity
  • DMRS Demodulation Reference Signal
  • scrambling code etc.
  • the numerology corresponds to a subcarrier spacing (SubCarrier Spacing, SCS) in the frequency domain.
  • SCS subcarrier Spacing
  • Numerology requires synchronization before each PDSCH transmission.
  • Numerology can be synchronized every time the BWP configuration information is synchronized.
  • the PDSCH transmission resource configuration information synchronization includes PDSCH transmission resource scheduling information synchronization.
  • PDSCH transmission resource scheduling corresponds to any of the following scheduling methods: carrying the PDSCH transmission scheduling information through downlink control information DCI; configuring the PDSCH transmission scheduling information through radio resource control RRC signaling, and carrying the PDSCH transmission scheduling information through DCI Activate or deactivate the PDSCH transmission scheduling information; carry the PDSCH transmission scheduling information through RRC signaling.
  • PDSCH transmission resource scheduling information synchronization includes at least one of the following: time information synchronization; the number of time slots included in each frame; DCI synchronization carrying PDSCH transmission scheduling information; configuring the PDSCH transmission scheduling information.
  • the first RRC configuration information is synchronized, and the DCI synchronization that activates or deactivates the PDSCH transmission scheduling information; the second RRC configuration information carrying the PDSCH transmission scheduling information is synchronized.
  • the time information includes but is not limited to at least one of the following: system frame number, subframe number, and time slot number.
  • the numerology in order to support numberOfSlotsPerFrame (the number of slots included in each frame) synchronization, the numerology also needs to be synchronized.
  • the scheduling method corresponding to PDSCH transmission resource scheduling is to carry the PDSCH transmission scheduling information through downlink control information (DCI), the DCI carrying the PDSCH transmission scheduling information, that is, the scheduling DCI Requires synchronization.
  • DCI downlink control information
  • the scheduling method corresponding to PDSCH transmission resource scheduling is the first RRC configuration information synchronization that configures the PDSCH transmission scheduling information, and the DCI synchronization of the PDSCH transmission scheduling information is activated or deactivated.
  • the first RRC configuration information that configures the PDSCH transmission scheduling information needs to be synchronized, and the DCI that activates or deactivates the PDSCH transmission scheduling information also needs to be synchronized.
  • the first RRC configuration information synchronization includes at least one of the following:
  • Designated wireless network temporary identity RNTI synchronization wherein the designated RNTI includes an RNTI used to activate or deactivate the PDSCH transmission resource configuration information, and/or an RNTI used to retransmit the PDSCH transmission resource configuration information; hybrid automatic The number of HARQ processes in retransmission requests is synchronized; the configuration period corresponding to the PDSCH transmission resource configuration information is synchronized.
  • the scheduling method corresponding to PDSCH transmission resource scheduling is to carry the PDSCH transmission scheduling information through RRC signaling
  • the second RRC configuration information carrying the PDSCH transmission scheduling information needs to be synchronized.
  • the second RRC configuration information synchronization includes at least one of the following: designated RNTI synchronization; wherein the designated RNTI includes an RNTI used to activate or deactivate the PDSCH transmission resource configuration information, and/or used for retransmission
  • the RNTI of the PDSCH transmission resource configuration information includes the synchronization of the number of hybrid automatic repeat request HARQ processes; the synchronization of the configuration period corresponding to the PDSCH transmission resource configuration information; the synchronization of the content of the PDSCH transmission resource configuration information.
  • the second network side node can control at least one first network side node to achieve PDSCH transmission synchronization corresponding to the MBS, realize MBS synchronization under the NR system, support wide area service deployment, expand SFN transmission scenarios, and improve Improved cell edge performance and spectrum utilization, high availability.
  • DCI synchronization in the present disclosure includes at least one of the following: DCI transmission content synchronization; DCI transmission resource synchronization.
  • DCI transmission content synchronization includes DCI transmission information synchronization. It should be noted that this means that the default PDCCH uses the same DCI format to transmit the DCI.
  • DCI transmission content synchronization includes DCI format synchronization and DCI transmission information synchronization.
  • the DCI transmission resources include at least one of the following: time domain resources, frequency domain resources, air domain resources, coding methods, and numerology.
  • the numerology corresponds to an SCS in the frequency domain.
  • Figure 2 is a flow chart of a transmission synchronization method according to an embodiment, which can be used for a second network side node, where the second network side node can be a base station. , CU (Centralized Unit, centralized unit), DU or a network-side node independent of the above-mentioned nodes, such as MBS master control node.
  • the method may include the following steps:
  • step 201 configuration information is sent to at least one first network side node.
  • the configuration information is used to configure a period for DCI synchronization.
  • the configuration information is used to indicate at least one of the following: DCI synchronization in each scheduling time slot; DCI synchronization in a designated scheduling time slot.
  • the first network side node when the configuration information is used to indicate DCI synchronization in a designated scheduling time slot, if the first network side node performs DCI synchronization in a certain designated scheduling time slot, there is no need to perform DCI synchronization in other designated scheduling time slots. , the first network side node can directly reuse the previously synchronized DCI.
  • step 201 can be implemented alone or in combination with the above-mentioned step 101.
  • the present disclosure does not limit the execution order of step 101 and step 201. That is, step 101 can be implemented before step 201 or after step 201. In addition, it is also possible to implement it at the same time.
  • the second network side node may configure a period for DCI synchronization for the first network side node, so as to control at least one first network side node to perform PDSCH transmission synchronization corresponding to the MBS.
  • the implementation is simple and the usability is high.
  • the configuration information in this disclosure can be used to indicate that DCI synchronization is performed in a designated scheduling time slot. DCI sync.
  • the configuration information is used to indicate DCI synchronization based on a predefined or preconfigured period.
  • the configuration information includes one or more bitmaps, that is, the configuration information is used to indicate DCI synchronization on a designated scheduling time slot in each designated period.
  • the designated scheduling time slot is at least one scheduling time slot whose bit value in the bitmap is a preset value.
  • the preset value may be 1 or 0, which is not limited in this disclosure.
  • the designated scheduling time slots are the 1st, 3rd, 5th, and 7th scheduling time slots, and the first network side node will ), DCI synchronization is performed on the 1st, 3rd, 5th, and 7th scheduling time slots.
  • the first network side node performs DCI synchronization on the first scheduling time slot, it can directly multiplex the synchronized DCI on the 3rd, 5th, and 7th scheduling time slots.
  • the configuration information includes two bitmaps, respectively 010101010 and 110101010.
  • the default value is 1, then the designated scheduling time slots are the 0th, 1st, 3rd, 5th, and 7th scheduling time slots.
  • the first network side node Within a specified period (for example, 10 milliseconds), DCI synchronization is performed on the 0th, 1st, 3rd, 5th, and 7th scheduling time slots. And after the first network side node performs DCI synchronization on the 0th scheduling time slot, it can directly multiplex the synchronized DCI on the 1st, 3rd, 5th, and 7th scheduling time slots.
  • the configuration information is used to indicate a reference time point or a reference period.
  • the first network side node may perform DCI synchronization on at least one scheduling time slot before or after the reference time point.
  • the configuration information is used to indicate a reference period
  • the first network side node may perform DCI synchronization on at least one scheduling time slot within the reference period.
  • the first network side node performs DCI synchronization in a specified scheduling time slot, there is no need to perform DCI synchronization in other designated scheduling time slots, and the first network side node can directly reuse the previously synchronized DCI.
  • the reference time point or reference period includes but is not limited to an absolute time point or absolute time period, SFN index, subframe index, and timeslot index.
  • the first network side node when the reference period is an absolute time period, performs DCI synchronization within at least one time slot included in the absolute time period.
  • the at least one time slot included in the absolute time period may be part of the time slots or all the time slots included in the absolute time period, which is not limited in this disclosure.
  • the first network side node when the reference period is an SFN index, performs DCI synchronization in at least one time slot included in at least one system frame corresponding to the system frame index.
  • at least one system frame corresponding to the system frame index may be part of the system frame or all system frames corresponding to the system frame index.
  • the at least one time slot included in the at least one system frame corresponding to the system frame index may be part of the time slots or all the time slots included in the at least one system frame corresponding to the system frame index. This disclosure does not limit this.
  • the first network side node when the reference period is a subframe index, performs DCI synchronization in at least one time slot included in at least one subframe corresponding to the subframe index.
  • the at least one subframe corresponding to the subframe index may be part of the subframes corresponding to the subframe index or all of the subframes.
  • the at least one time slot included in the at least one subframe corresponding to the subframe index may be part of the time slots or all the time slots included in the at least one subframe corresponding to the subframe index. This disclosure does not limit this.
  • the first network side node when the reference period is a time slot index, performs DCI synchronization in at least one time slot corresponding to the time slot index.
  • at least one time slot corresponding to the time slot index may be part of the time slots or all time slots corresponding to the time slot index. This disclosure does not limit this.
  • the second network side node can configure the period for DCI synchronization for the first network side node, so as to control at least one first network side node to perform PDSCH transmission synchronization corresponding to the MBS, and can save signaling resources. Reduce latency.
  • the second network side node may send the synchronization control information to at least one first network side node through inter-node signaling.
  • the synchronization control information is used to control at least one of the first network side nodes to perform at least one of PDSCH transmission content synchronization, first RRC configuration information synchronization, second RRC configuration information synchronization, and DCI synchronization.
  • the PDSCH transmission synchronization corresponding to the MBS can be implemented through inter-node signaling, which is simple to implement and has high availability.
  • the transmission synchronization method provided by the present disclosure will be introduced below from the first network side node side.
  • FIG. 3 is a flow chart of a transmission synchronization method according to an embodiment, which can be used for a first network side node, wherein the first network side
  • the node can be CU or DU, and the method can include the following steps:
  • step 301 synchronization control information sent by the second network side node is received.
  • the synchronization control information is used to control at least one of the first network side nodes to perform PDSCH transmission synchronization, and the PDSCH corresponds to the multicast broadcast service MBS.
  • step 302 the PDSCH transmission synchronization is performed based on the synchronization control information.
  • the method may be applied in NR or post-NR communication systems.
  • the first network side node can perform PDSCH transmission synchronization corresponding to the MBS based on the synchronization control information sent by the second network side node, realizing MBS synchronization under the NR system, supporting wide area service deployment, and expanding the SFN transmission scenario , improving cell edge performance and spectrum utilization, with high availability.
  • the PDSCH transmission synchronization includes at least one of the following: MBS Transmission Channel (MBS Transmission Channel, MTCH) transmission corresponding PDSCH transmission synchronization; MBS Control Channel (MBS Control Channel, MCCH) transmission corresponding PDSCH Transmission synchronization.
  • MBS Transmission Channel MBS Transmission Channel
  • MBS Control Channel MBS Control Channel
  • the MTCH transmission includes at least one of the following: MTCH transmission corresponding to the multicast service; MTCH transmission corresponding to the broadcast service.
  • the MCCH transmission at least includes: MCCH transmission corresponding to the broadcast service.
  • PDSCH transmission synchronization includes at least one of the following: PDSCH transmission content synchronization; PDSCH transmission resource configuration information synchronization.
  • the PDSCH transmission resources include at least one of the following: time domain resources, frequency domain resources, air domain resources, coding method and parameter set (numerology).
  • time domain resources include but are not limited to at least one of the following: Searching Space (SS), System Frame Number (SFN), subframe, and time slot (slot) , period, starting position.
  • SS Searching Space
  • SFN System Frame Number
  • Slot time slot
  • Frequency domain resources include but are not limited to at least one of the following: Control Resource Set (CORESET), frequency, bandwidth, reference point A (point-A), partial bandwidth (Bandwidth Part, BWP) ), cell identifier (Cell-ID), physical cell identifier (Physical Cell Identifier, PCI).
  • CORESET Control Resource Set
  • point-A reference point A
  • BWP partial bandwidth
  • BWP Bandwidth Part
  • Cell-ID cell identifier
  • PCI Physical Cell Identifier
  • Airspace resources include but are not limited to Transmission Configuration Index (TCI) status, such as related synchronization signal blocks (Synchronization Signal and PBCH block, SSB), Channel State Information Reference Signal (Channel State Information-Reference Signal, CSI-RS) .
  • TCI Transmission Configuration Index
  • SSB Synchronization Signal and PBCH block
  • CSI-RS Channel State Information Reference Signal
  • Coding methods include but are not limited to Radio Network Temporary Identity (RNTI), DCI format, Demodulation Reference Signal (DMRS), scrambling code, etc.
  • RNTI Radio Network Temporary Identity
  • DMRS Demodulation Reference Signal
  • scrambling code etc.
  • the numerology corresponds to a subcarrier spacing (SubCarrier Spacing, SCS) in the frequency domain.
  • SCS subcarrier Spacing
  • Numerology requires synchronization before each PDSCH transmission.
  • Numerology can be synchronized every time the BWP configuration information is synchronized.
  • the PDSCH transmission resource configuration information synchronization includes PDSCH transmission resource scheduling information synchronization.
  • PDSCH transmission resource scheduling corresponds to any of the following scheduling methods: carrying the PDSCH transmission scheduling information through downlink control information DCI; configuring the PDSCH transmission scheduling information through radio resource control RRC signaling, and carrying the PDSCH transmission scheduling information through DCI Activate or deactivate the PDSCH transmission scheduling information; carry the PDSCH transmission scheduling information through RRC signaling.
  • PDSCH transmission resource scheduling information synchronization includes at least one of the following: time information synchronization; the number of time slots included in each frame; DCI synchronization carrying PDSCH transmission scheduling information; configuring the PDSCH transmission scheduling information.
  • the first RRC configuration information is synchronized, and the DCI synchronization that activates or deactivates the PDSCH transmission scheduling information; the second RRC configuration information carrying the PDSCH transmission scheduling information is synchronized.
  • the time information includes but is not limited to at least one of the following: system frame number, subframe number, and time slot number.
  • the numerology in order to support numberOfSlotsPerFrame (the number of slots included in each frame) synchronization, the numerology also needs to be synchronized.
  • the scheduling method corresponding to PDSCH transmission resource scheduling is to carry the PDSCH transmission scheduling information through downlink control information (DCI), the DCI carrying the PDSCH transmission scheduling information, that is, the scheduling DCI Requires synchronization.
  • DCI downlink control information
  • the scheduling method corresponding to PDSCH transmission resource scheduling is the first RRC configuration information synchronization that configures the PDSCH transmission scheduling information, and the DCI synchronization of the PDSCH transmission scheduling information is activated or deactivated.
  • the first RRC configuration information that configures the PDSCH transmission scheduling information needs to be synchronized, and the DCI that activates or deactivates the PDSCH transmission scheduling information also needs to be synchronized.
  • the first RRC configuration information synchronization includes at least one of the following:
  • Designated wireless network temporary identity RNTI synchronization wherein the designated RNTI includes an RNTI used to activate or deactivate the PDSCH transmission resource configuration information, and/or an RNTI used to retransmit the PDSCH transmission resource configuration information; hybrid automatic The number of HARQ processes in retransmission requests is synchronized; the configuration period corresponding to the PDSCH transmission resource configuration information is synchronized.
  • the scheduling method corresponding to PDSCH transmission resource scheduling is to carry the PDSCH transmission scheduling information through RRC signaling
  • the second RRC configuration information carrying the PDSCH transmission scheduling information needs to be synchronized.
  • the second RRC configuration information synchronization includes at least one of the following: designated RNTI synchronization; wherein the designated RNTI includes an RNTI used to activate or deactivate the PDSCH transmission resource configuration information, and/or used for retransmission
  • the RNTI of the PDSCH transmission resource configuration information includes the synchronization of the number of hybrid automatic repeat request HARQ processes; the synchronization of the configuration period corresponding to the PDSCH transmission resource configuration information; the synchronization of the content of the PDSCH transmission resource configuration information.
  • DCI synchronization in the present disclosure includes at least one of the following: DCI transmission content synchronization; DCI transmission resource synchronization.
  • DCI transmission content synchronization includes DCI transmission information synchronization. It should be noted that this means that the default PDCCH uses the same DCI format to transmit the DCI.
  • DCI transmission content synchronization includes DCI format synchronization and DCI transmission information synchronization.
  • the DCI transmission resources include at least one of the following: time domain resources, frequency domain resources, air domain resources, coding methods, and numerology.
  • the numerology corresponds to an SCS in the frequency domain.
  • Figure 4 is a flow chart of a transmission synchronization method according to an embodiment, which can be used for a first network side node, where the first network side node can be a base station. , CU or DU, the method may include the following steps:
  • step 401 receive configuration information sent by the second network side node.
  • the configuration information is used to configure a period for DCI synchronization.
  • the configuration information is used to indicate at least one of the following: DCI synchronization in each scheduling time slot; DCI synchronization in a designated scheduling time slot.
  • step 402 a period for DCI synchronization is determined based on the configuration information.
  • the first network side node performs DCI synchronization in one of the designated scheduling time slots, and does not need to perform DCI synchronization in other designated scheduling time slots, and directly resumes operation. Just use the DCI that was synchronized before.
  • steps 401 to 402 can be implemented alone or in combination with the above-mentioned steps 301 to 302, and the order of implementation of each step can be adjusted as needed, which is not limited by this disclosure.
  • the first network side node may determine the period for DCI synchronization based on the configuration information sent by the second network side node, so as to control at least one first network side node to perform PDSCH transmission synchronization corresponding to the MBS.
  • the implementation is simple and the usability is high.
  • the configuration information in this disclosure can be used to indicate that DCI synchronization is performed in a designated scheduling time slot. DCI sync.
  • the configuration information is used to indicate DCI synchronization based on a predefined or preconfigured period.
  • the configuration information includes one or more bitmaps, that is, the configuration information is used to indicate DCI synchronization on a designated scheduling time slot in each designated period.
  • the designated scheduling time slot is at least one scheduling time slot whose bit value in the bitmap is a preset value.
  • the preset value may be 1 or 0, which is not limited in this disclosure.
  • the designated scheduling time slots are the 1st, 3rd, 5th, and 7th scheduling time slots, and the first network side node will ), DCI synchronization is performed on the 1st, 3rd, 5th, and 7th scheduling time slots.
  • the first network side node performs DCI synchronization on the first scheduling time slot, it can directly multiplex the synchronized DCI on the 3rd, 5th, and 7th scheduling time slots.
  • the configuration information includes two bitmaps, respectively 010101010 and 110101010.
  • the default value is 1, then the designated scheduling time slots are the 0th, 1st, 3rd, 5th, and 7th scheduling time slots.
  • the first network side node Within a specified period (for example, 10 milliseconds), DCI synchronization is performed on the 0th, 1st, 3rd, 5th, and 7th scheduling time slots. And after the first network side node performs DCI synchronization on the 0th scheduling time slot, it can directly multiplex the synchronized DCI on the 1st, 3rd, 5th, and 7th scheduling time slots.
  • the configuration information is used to indicate a reference time point or a reference period.
  • the first network side node may perform DCI synchronization on at least one scheduling time slot before or after the reference time point.
  • the configuration information is used to indicate a reference period
  • the first network side node may perform DCI synchronization on at least one scheduling time slot within the reference period.
  • the first network side node performs DCI synchronization in a designated scheduling time slot (generally the first designated scheduling time slot in the scheduling cycle)
  • a network-side node can directly reuse the previously synchronized DCI.
  • the reference time point or reference period includes but is not limited to an absolute time point or absolute time period, SFN index, subframe index, and timeslot index.
  • the first network side node when the reference period is an absolute time period, performs DCI synchronization in at least one time slot included in the absolute time period.
  • the at least one time slot included in the absolute time period may be part of the time slots or all the time slots included in the absolute time period, which is not limited in this disclosure.
  • the first network side node when the reference period is an SFN index, performs DCI synchronization in at least one time slot included in at least one system frame corresponding to the system frame index.
  • at least one system frame corresponding to the system frame index may be part of the system frame or all system frames corresponding to the system frame index.
  • the at least one time slot included in the at least one system frame corresponding to the system frame index may be part of the time slots or all the time slots included in the at least one system frame corresponding to the system frame index. This disclosure does not limit this.
  • the first network side node when the reference period is a subframe index, performs DCI synchronization in at least one time slot included in at least one subframe corresponding to the subframe index.
  • the at least one subframe corresponding to the subframe index may be part of the subframes corresponding to the subframe index or all of the subframes.
  • the at least one time slot included in the at least one subframe corresponding to the subframe index may be part of the time slots or all the time slots included in the at least one subframe corresponding to the subframe index. This disclosure does not limit this.
  • the first network side node when the reference period is a time slot index, performs DCI synchronization in at least one time slot corresponding to the time slot index.
  • at least one time slot corresponding to the time slot index may be part of the time slots or all time slots corresponding to the time slot index. This disclosure does not limit this.
  • the DCI synchronization period can be performed based on the configuration information sent by the second network side node, so as to control at least one first network side node to perform PDSCH transmission synchronization corresponding to the MBS, and can save signaling resources and reduce latency.
  • the first network side node may receive the synchronization control information sent by the second network side node through inter-node signaling.
  • the synchronization control information is used to control at least one of the first network side nodes to perform at least one of PDSCH transmission content synchronization, first RRC configuration information synchronization, second RRC configuration information synchronization, and DCI synchronization.
  • the PDSCH transmission synchronization corresponding to the MBS can be implemented through inter-node signaling, which is simple to implement and has high availability.
  • the present disclosure also provides an application function implementation device embodiment.
  • Figure 5 is a block diagram of a transmission synchronization device according to an exemplary embodiment.
  • the device is used for a second network side node and includes:
  • the sending module 501 is configured to send synchronization control information to at least one first network side node; wherein the synchronization control information is used to control at least one of the first network side nodes to perform physical downlink shared channel PDSCH transmission synchronization, and the PDSCH corresponds to the multicast broadcast service MBS.
  • PDSCH transmission synchronization has been described in detail in the foregoing embodiments and will not be described again here.
  • Figure 6 is a block diagram of a transmission synchronization device according to an exemplary embodiment.
  • the device is used for a first network side node and includes:
  • the receiving module 601 is configured to receive synchronization control information sent by the second network side node; wherein the synchronization control information is used to control at least one of the first network side nodes to perform physical downlink shared channel PDSCH transmission synchronization, and the PDSCH Corresponds to the multicast broadcast service MBS;
  • the synchronization module 602 is configured to perform the PDSCH transmission synchronization based on the synchronization control information.
  • PDSCH transmission synchronization has been described in detail in the foregoing embodiments and will not be described again here.
  • the device embodiment since it basically corresponds to the method embodiment, please refer to the partial description of the method embodiment for relevant details.
  • the device embodiments described above are only illustrative.
  • the units described above as separate components may or may not be physically separated.
  • the components shown as units may or may not be physical units, that is, they may be located in a place, or can be distributed across multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. Persons of ordinary skill in the art can understand and implement the method without any creative effort.
  • the present disclosure also provides a computer-readable storage medium that stores a computer program, and the computer program is used to execute any of the above-mentioned transmission synchronization methods for the second network side node side.
  • the present disclosure also provides a computer-readable storage medium, the storage medium stores a computer program, the computer program is used to execute any of the above-mentioned transmission synchronization methods for the first network side node side.
  • the present disclosure also provides a transmission synchronization device, including:
  • Memory used to store instructions executable by the processor
  • the processor is configured to execute the steps of any one of the transmission synchronization methods described above on the second network side node side.
  • Figure 7 is a schematic structural diagram of a transmission synchronization device 700 according to an exemplary embodiment.
  • the apparatus 700 may be provided as a second network side node.
  • apparatus 700 includes a processing component 722, a wireless transmit/receive component 724, an antenna component 726, and a signal processing portion specific to the wireless interface.
  • the processing component 722 may further include at least one processor.
  • a processor in the processing component 722 may be configured to perform any of the transmission synchronization methods described above on the second network side node side.
  • the present disclosure also provides a transmission synchronization device, including:
  • Memory used to store instructions executable by the processor
  • the processor is configured to execute any of the above-mentioned transmission synchronization methods on the first network side node side.
  • FIG. 8 is a schematic structural diagram of a transmission synchronization device 800 according to an exemplary embodiment.
  • the apparatus 800 may be provided as a first network side node.
  • the apparatus 800 includes a processing component 822, a wireless transmit/receive component 824, an antenna component 826, and a signal processing portion specific to the wireless interface.
  • the processing component 822 may further include at least one processor.
  • a processor in the processing component 822 may be configured to execute any one of the above-mentioned transmission synchronization methods on the first network side node side.

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Abstract

La présente divulgation concerne un procédé et un appareil de synchronisation de transmission, et un support d'enregistrement. Le procédé de synchronisation de transmission consiste à : envoyer des informations de commande de synchronisation à au moins un premier nœud côté réseau, les informations de commande de synchronisation étant utilisées pour commander ledit premier nœud côté réseau pour exécuter une synchronisation de transmission d'un canal physique partagé descendant (PDSCH), et le PDSCH correspondant à un service de diffusion/multidiffusion (MBS). Selon la présente divulgation, un second nœud côté réseau peut commander au moins un premier nœud côté réseau pour mettre en œuvre une synchronisation de transmission d'un PDSCH correspondant à un MBS, de telle sorte qu'une synchronisation MBS sous un système NR est assurée, et un déploiement de service étendu est pris en charge, ce qui permet de développer des scénarios de transmission SFN, d'améliorer les performances de périphérie de cellule et l'utilisation de spectre, et de garantir une disponibilité élevée.
PCT/CN2022/086434 2022-04-12 2022-04-12 Procédé et appareil de synchronisation de transmission, et support d'enregistrement WO2023197172A1 (fr)

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CN202280001119.3A CN117223304A (zh) 2022-04-12 2022-04-12 传输同步方法及装置、存储介质
PCT/CN2022/086434 WO2023197172A1 (fr) 2022-04-12 2022-04-12 Procédé et appareil de synchronisation de transmission, et support d'enregistrement

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Citations (4)

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Publication number Priority date Publication date Assignee Title
CN111417186A (zh) * 2019-01-07 2020-07-14 华为技术有限公司 一种时间同步方法和装置
WO2021134298A1 (fr) * 2019-12-30 2021-07-08 Oppo广东移动通信有限公司 Procédé et dispositif d'indication de ressources et appareil de communication
WO2021138805A1 (fr) * 2020-01-07 2021-07-15 Oppo广东移动通信有限公司 Procédé et appareil de planification synchrone d'un service et dispositif de communication
WO2021142647A1 (fr) * 2020-01-15 2021-07-22 Oppo广东移动通信有限公司 Procédé et appareil de transmission de service, dispositif terminal et dispositif réseau

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CN111417186A (zh) * 2019-01-07 2020-07-14 华为技术有限公司 一种时间同步方法和装置
WO2021134298A1 (fr) * 2019-12-30 2021-07-08 Oppo广东移动通信有限公司 Procédé et dispositif d'indication de ressources et appareil de communication
WO2021138805A1 (fr) * 2020-01-07 2021-07-15 Oppo广东移动通信有限公司 Procédé et appareil de planification synchrone d'un service et dispositif de communication
WO2021142647A1 (fr) * 2020-01-15 2021-07-22 Oppo广东移动通信有限公司 Procédé et appareil de transmission de service, dispositif terminal et dispositif réseau

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