WO2023197173A1 - 业务同步系统 - Google Patents

业务同步系统 Download PDF

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Publication number
WO2023197173A1
WO2023197173A1 PCT/CN2022/086435 CN2022086435W WO2023197173A1 WO 2023197173 A1 WO2023197173 A1 WO 2023197173A1 CN 2022086435 W CN2022086435 W CN 2022086435W WO 2023197173 A1 WO2023197173 A1 WO 2023197173A1
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Prior art keywords
synchronization
transmission
network side
mcch
side node
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PCT/CN2022/086435
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English (en)
French (fr)
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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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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN202280001110.2A priority Critical patent/CN117223259A/zh
Priority to PCT/CN2022/086435 priority patent/WO2023197173A1/zh
Publication of WO2023197173A1 publication Critical patent/WO2023197173A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path

Definitions

  • the present disclosure relates to the field of communications, and in particular to a service synchronization system.
  • 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 service synchronization system.
  • a service synchronization system including:
  • At least one first network side node wherein the first network side node is a centralized unit CU or a distribution unit DU;
  • the second network side node is used to control at least one of the first network side nodes to perform multicast broadcast service MBS synchronization.
  • the second network side node is any one of the first network side nodes.
  • the second network side node is a network side node independent of any of the first network side nodes.
  • the second network side node is selected from one of the following:
  • the MBS synchronization includes at least one of the following:
  • the broadcast service synchronization includes at least one of the following:
  • the multicast service synchronization at least includes:
  • the MCCH transmission synchronization includes at least one of the following:
  • the physical downlink control channel PDCCH transmission corresponding to MCCH transmission is synchronized
  • the physical downlink shared channel PDSCH transmission corresponding to MCCH transmission is synchronized
  • the MCCH transmission configuration information is used to indicate the resource location of the terminal receiving MCCH;
  • MCCH change notification information is synchronized.
  • the MCCH change notification information synchronization includes at least one of the following:
  • the PDCCH transmission corresponding to the MCCH change notification information is synchronized
  • the wireless network temporary identifier RNTI is synchronized, and the RNTI is associated with the PDCCH corresponding to the MCCH change communication information.
  • the second network side node is also configured to control at least one of the first network side nodes to perform the MCCH transmission content synchronization, the PDCCH transmission synchronization, and the MCCH transmission configuration information based on inter-node signaling. At least one item in sync.
  • the MTCH transmission synchronization in the broadcast service synchronization or the multicast service synchronization includes at least one of the following:
  • the PDCCH transmission corresponding to the MTCH transmission is synchronized
  • Hybrid automatic repeat request HARQ synchronization
  • the second network side node is further configured to control at least one of the first network side nodes to perform synchronization of the MTCH transmission content based on a synchronization SYNC protocol.
  • the HARQ synchronization includes synchronization of the number of HARQ processes in at least one scheduling time slot indicated by the second network side node.
  • the PDCCH transmission synchronization includes at least one of the following:
  • the downlink control information DCI transmission content carried by PDCCH is synchronized
  • the present disclosure can provide a service synchronization system that can realize MBS synchronization under the NR system, support wide-area service deployment, expand single-frequency network SFN transmission scenarios, improve cell edge performance and spectrum utilization, and have high availability.
  • Figure 1 is a schematic architectural diagram of a service synchronization system according to an exemplary embodiment.
  • Figure 2 is a schematic architectural diagram of another service synchronization system according to an exemplary embodiment.
  • Figure 3A is a schematic architectural diagram of another service synchronization system according to an exemplary embodiment.
  • Figure 3B is a schematic architectural diagram of another service synchronization system according to an exemplary embodiment.
  • 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 MBS service is targeted at single frequency network SFN, it limits the number of deployments of single frequency network SFN cells and the expected gain of single frequency network SFN.
  • the present disclosure provides the following service synchronization system.
  • Figure 1 is a schematic architectural diagram of a service synchronization system according to an embodiment.
  • the system may include:
  • At least one first network side node 101 At least one first network side node 101;
  • the second network side node 102 is used to control at least one of the first network side nodes 101 to perform multicast broadcast service MBS synchronization.
  • the first network side node 101 may be selected from a centralized unit (Centralized Unit, CU) or a distributed unit (Distributed Unit, DU).
  • a centralized unit Centralized Unit, CU
  • a distributed unit Distributed Unit, DU
  • the second network side node 102 is any one of the first network side nodes 101 .
  • the second network side node 102 may be a network side node independent of the first network side node 101.
  • the second network side node 102 may be a CU, a DU, a base station, a newly defined network side node independent of the CU, the DU or the base station.
  • the newly defined network-side node may be called a Central Control Node (CCN).
  • CCN Central Control Node
  • the second network side node 102 is a CCN, and the CCN can be used to control at least one of the first network side nodes 101 to perform MBS synchronization.
  • the CCN may be a CU, a DU, a base station, or a newly defined CCN independent of the above-mentioned node (CU, DU, or base station).
  • the above-mentioned service synchronization system provided by the present disclosure can be deployed in a NR or post-NR communication system.
  • the service synchronization system includes at least a first network side node and a second network side node.
  • the second network side node can be used to control the first network side node to implement MBS synchronization, thereby realizing DU within the CU.
  • the purpose of MBS synchronization between CUs or MBS synchronization between CUs is to support wide-area service deployment, expand single-frequency network SFN transmission scenarios, improve cell edge performance and spectrum utilization, and achieve high availability.
  • the second network side node 102 may be at least one of the first network side nodes.
  • MBS synchronization of at least one DU connected to the same CU can be realized, that is, MBS synchronization based on the outside of the distribution unit (inter-DU) can be realized, thereby extending MBS synchronization from within the DU to between DUs within the CU.
  • inter-DU distribution unit
  • At least one of the first network side nodes 101 may be a different CU, and the second network side node 102 may be at least one of the first network side nodes 101 .
  • Any network side node, that is, the second network side node 102 is any CU in the first network side node 101.
  • the second network side node 102 is a network side node independent of any of the first network side nodes 101 .
  • the second network side node 102 is the above-mentioned CCN.
  • the second network side node 102 is also used to control multiple DUs accessing the same first network side node 101 to perform MBS synchronization.
  • MBS synchronization between CUs can be realized, MBS synchronization is extended from inside the DU to outside the CU, the single frequency network SFN transmission scenario is expanded, cell edge performance and spectrum utilization are improved, and availability is high.
  • At least one first network side node can be controlled to perform MBS synchronization through a network side node (second network side node).
  • the system architecture of the first network side node is selected from CU or DU. should fall within the protection scope of this disclosure.
  • MBS synchronization includes at least one of the following: broadcast service synchronization; multicast service synchronization.
  • broadcast service synchronization includes at least one of the following: MBS Transmission Channel (MBS Transmission Channel, MTCH) transmission synchronization; MBS control channel MCCH transmission synchronization.
  • MBS Transmission Channel MBS Transmission Channel, MTCH
  • MBS control channel MCCH transmission synchronization.
  • Multicast service synchronization at least includes: MTCH transmission synchronization.
  • MCCH transmission synchronization in broadcast service synchronization includes at least one of the following: MCCH transmission content synchronization; MCCH transmission corresponding physical downlink control channel PDCCH transmission synchronization; MCCH transmission corresponding physical downlink shared channel PDSCH transmission synchronization ; MCCH transmission configuration information synchronization; wherein, the MCCH transmission configuration information is used to indicate the resource location of the terminal receiving MCCH; MCCH change notification information synchronization.
  • MCCH transmission content synchronization refers to the synchronization of control information transmitted in the MCCH channel.
  • the second network side node 102 is also configured to control at least one of the first network side nodes 101 to perform the MCCH transmission content synchronization based on inter-node signaling, which may be inter-node signaling.
  • the Physical Downlink Control Channel (PDCCH) corresponding to MCCH transmission refers to the physical channel PDCCH used to realize logical channel MCCH transmission.
  • PDCCH transmission synchronization includes at least one of the following: Downlink control information DCI transmission content carried by PDCCH Synchronization; DCI transmission resource synchronization.
  • the second network side node 102 is also configured to control at least one of the first network side nodes 101 to perform the PDCCH transmission synchronization based on inter-node signaling, which may be inter-node signaling.
  • the Physical Downlink Shared Channel (PDSCH) corresponding to MCCH transmission refers to the physical channel PDSCH used to implement logical channel MCCH transmission.
  • MCCH transmission configuration information is used to indicate the resource location for the terminal to receive MCCH.
  • the resource location here includes but is not limited to time domain resource location, frequency domain resource location, air domain resource location, coding method, Numerology parameter set, Numerology and frequency domain Corresponds to a subcarrier spacing (SubCarrier Spacing, SCS).
  • MCCH transmission configuration information can be carried in the SIB.
  • the second network side node 102 is also configured to control at least one of the first network side nodes 101 to perform the MCCH transmission configuration information synchronization based on inter-node signaling.
  • Inter-node signaling can be inter-node signaling.
  • the synchronization of MCCH change notification information includes at least one of the following: synchronization of PDCCH transmission corresponding to the MCCH change notification information; synchronization of wireless network temporary identifier RNTI, where the RNTI is associated with the PDCCH corresponding to the MCCH change communication information.
  • PDCCH transmission synchronization includes at least one of the following: synchronization of downlink control information DCI transmission content carried by PDCCH; synchronization of DCI transmission resources.
  • the second network side node 102 is also configured to control at least one of the first network side nodes 101 to perform the PDCCH transmission synchronization based on inter-node signaling, which may be inter-node signaling.
  • the MTCH transmission synchronization included in the broadcast service and the multicast service includes at least one of the following: MTCH transmission content synchronization; PDCCH transmission synchronization corresponding to MTCH transmission; PDSCH transmission synchronization corresponding to MTCH; hybrid automatic retransmission Request HARQ synchronization.
  • the second network side node 102 is also configured to control at least one of the first network side nodes 101 to perform synchronization of the MTCH transmission content based on a synchronization (SYNC) protocol.
  • SYNC synchronization
  • the PDCCH corresponding to MTCH transmission refers to the physical channel PDCCH used to implement logical channel MTCH transmission.
  • PDCCH transmission synchronization includes at least one of the following: synchronization of DCI transmission content of downlink control information carried by PDCCH; synchronization of DCI transmission resources.
  • the second network side node 102 is also configured to control at least one of the first network side nodes 101 to perform the PDCCH transmission synchronization based on inter-node signaling, which may be inter-node signaling.
  • the PDSCH corresponding to the MTCH refers to the physical channel PDSCH used to realize the transmission of the logical channel MTCH.
  • the Hybrid Automatic Repeat ReQuest (HARQ) synchronization includes the synchronization of the number of HARQ processes in at least one scheduling time slot indicated by the second network side node 102.
  • MBS synchronization under the NR system can be realized, wide-area service deployment is supported, SFN transmission scenarios are expanded, cell edge performance and spectrum utilization are improved, and availability is high.

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Abstract

本公开提供一种业务同步系统,其中,所述系统包括:至少一个第一网络侧节点;第二网络侧节点,用于控制至少一个所述第一网络侧节点执行多播广播业务MBS同步。本公开可以实现NR系统下的MBS同步,支持广域业务部署,扩展了单频网络SFN传输场景,提高了小区边缘性能和频谱利用率,可用性高。

Description

业务同步系统 技术领域
本公开涉及通信领域,尤其涉及业务同步系统。
背景技术
目前,版本17(Release 17,R17)中仅支持分布单元内部(intra-Distributed Unit,intra-DU)场景下的多播广播业务(Multicast Broadcast Service,MBS)同步,即针对单频网络(Single-Frequency Network,SFN)的MBS同步。
但是,仅支持intra-DU下的SFN会限制SFN小区部署数量,从而限制SFN的预期增益。
发明内容
为克服相关技术中存在的问题,本公开实施例提供一种业务同步系统。
根据本公开实施例,提供了一种业务同步系统,包括:
至少一个第一网络侧节点;其中,所述第一网络侧节点为集中单元CU或分布单元DU;
第二网络侧节点,用于控制至少一个所述第一网络侧节点执行多播广播业务MBS同步。
可选地,所述第二网络侧节点为所述第一网络侧节点中的任一个网络侧节点;或
所述第二网络侧节点为独立于任一所述第一网络侧节点的一个网络侧节点。
可选地,所述第二网络侧节点选自以下中的一项:
CU;
DU;
基站;
独立于CU、DU或基站的一个网络侧节点。
可选地,所述MBS同步包括以下至少一项:
广播业务同步;
组播业务同步。
可选地,所述广播业务同步包括以下至少一项:
MBS传输信道MTCH传输同步;
MBS控制信道MCCH传输同步。
可选地,所述组播业务同步至少包括:
MTCH传输同步。
可选地,所述MCCH传输同步包括以下至少一项:
MCCH传输内容同步;
MCCH传输对应的物理下行控制信道PDCCH传输同步;
MCCH传输对应的物理下行共享信道PDSCH传输同步;
MCCH传输配置信息同步;其中,所述MCCH传输配置信息用于指示终端接收MCCH的资源位置;
MCCH更改通知信息同步。
可选地,所述MCCH更改通知信息同步包括以下至少一项:
所述MCCH更改通知信息对应的PDCCH传输同步;
无线网络临时标识RNTI同步,所述RNTI与所述MCCH更改通信信息对应的PDCCH相关联。
可选地,所述第二网络侧节点还用于基于节点间信令,控制至少一个所述第一网络侧节点执行所述MCCH传输内容同步、所述PDCCH传输同步、所述MCCH传输配置信息同步中的至少一项。
可选地,所述广播业务同步或所述组播业务同步中的MTCH传输同步包括以下至少一项:
MTCH传输内容同步;
MTCH传输对应的PDCCH传输同步;
MTCH对应的PDSCH传输同步;
混合自动重传请求HARQ同步。
可选地,所述第二网络侧节点还用于基于同步SYNC协议,控制至少一个所述第一网络侧节点执行所述MTCH传输内容同步。
可选地,所述HARQ同步包括所述第二网络侧节点指示的至少一个调度时隙内的HARQ进程数同步。
可选地,所述PDCCH传输同步包括以下至少一项:
PDCCH携带的下行控制信息DCI传输内容同步;
DCI传输资源同步。
本公开的实施例提供的技术方案可以包括以下有益效果:
本公开可以提供了一种业务同步系统,可以实现NR系统下的MBS同步,支持广域业务部署,扩展了单频网络SFN传输场景,提高了小区边缘性能和频谱利用率,可用性高。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本发明的实施例,并与说明书一起用于解释本发明的原理。
图1是根据一示例性实施例示出的一种业务同步系统的架构示意图。
图2是根据一示例性实施例示出的另一种业务同步系统的架构示意图。
图3A是根据一示例性实施例示出的另一种业务同步系统的架构示意图。
图3B是根据一示例性实施例示出的另一种业务同步系统的架构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反,它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。
在本公开使用的术语是仅仅出于描述特定实施例的目的,而非旨在限制本公开。在本公开和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式,除非上下文清楚地表示其他含义。还应当理解,本文中使用的术语“和/或”是指并包含至少一个相关联的列出项目的任何或所有可能组合。
应当理解,尽管在本公开可能采用术语第一、第二、第三等来描述各种信息,但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如,在不脱离本公开范围的情况下,第一信息也可以被称为第二信息,类似地,第二信息也可以被称为第一信息。取决于语境,如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
在第5代移动通信技术(5th Generation Mobile Communication Technology,5G)新空口(New Radio,NR)系统中,MBS业务可以通过MBS业务标识进行标记,MBS业务标识包括以下至少一项:临时移动组标识(Temporary Mobile Group Identity,TMGI)、MBS会话标识(MBS Session ID)、MBS业务流标识(MBS QoS flow ID)。
其中,MBS业务的发送模式包括以下两种:
发送模式一(多播发送),终端进入无线资源控制连接态(RRC_CONNECTED)接收MBS业务的发送配置信息,从而才能接收MBS业务。网络侧设备通过终端专属信令将MBS业务的接收配置信息发 送给终端。
发送模式二(广播发送),终端可以在空闲态(IDLE)或非激活态(INACTIVE)或连接态(CONNECTED)接收MBS业务的发送配置信息,并接收MBS业务。网络侧设备通过系统信息和MBS控制信道(MBS Control Channel,MCCH)信息将MBS业务的接收配置信息发送给终端。其中,系统信息可以为系统信息块(System Information Block,SIB)。
考虑到MBS业务针对的是单频网络SFN,限制了单频网络SFN小区部署数量,以及单频网络SFN的预期增益。为了解决上述技术问题,本公开提供了以下业务同步系统。
本公开实施例提供了一种业务同步系统,参照图1所示,图1是根据一实施例示出的一种业务同步系统的架构示意图,该系统可以包括:
至少一个第一网络侧节点101;
第二网络侧节点102,用于控制至少一个所述第一网络侧节点101执行多播广播业务MBS同步。
在本公开实施例中,第一网络侧节点101可以选自集中单元(Centralized Unit,CU)或分布单元(Distributed Unit,DU)。
在一个可能的实现方式中,第二网络侧节点102为所述第一网络侧节点101中的任一个网络侧节点。
在另一个可能的实现方式中,第二网络侧节点102可以为独立于第一网络侧节点101的一个网络侧节点。
在另一个可能的实现方式中,第二网络侧节点102可以为CU,DU,基站,独立于CU、DU或基站的一个新定义的网络侧节点。本公开中,可以将新定义的网络侧节点称为中央控制节点(Central Control Node,CCN)。
在另一个可能的实现方式中,第二网络侧节点102为CCN,该CCN可以用于控制至少一个所述第一网络侧节点101执行MBS同步。
进一步地,该CCN可以为CU、DU、基站或独立于上述节点(CU、DU或基站)的一个新定义的CCN。
在另一个可能的实现方式中,本公开提供的上述业务同步系统可以部署在NR或NR之后的通信系统中。
上述实施例中,在业务同步系统中包括至少一个第一网络侧节点和第二网络侧节点,第二网络侧节点可以用来控制第一网络侧节点实现MBS同步,从而实现了CU内部的DU之间的MBS同步或CU之间的MBS同步的目的,支持广域业务部署,扩展了单频网络SFN传输场景,提高了小区边缘性能和频谱利用率,可用性高。
在一些可选实施例中,参照图2所示,至少一个第一网络侧节点101为接入同一CU的至少一个DU的情况下,第二网络侧节点102可以为至少一个所述第一网络侧节点101所接入的CU。
上述实施例中,可以实现接入同一CU的至少一个DU的MBS同步,即实现了基于分布单元外部(inter-DU)的MBS同步,从而将MBS同步从DU内部扩展到CU内部的DU之间的场景下,提高了小区边缘性能和频谱利用率,可用性高。
在一些可选实施例中,参照图3A所示,至少一个所述第一网络侧节点101可以为不同的CU,第二网络侧节点102可以为至少一个所述第一网络侧节点101中的任一个网络侧节点,即第二网络侧节点102为第一网络侧节点101中的任一个CU。
或者参照图3B所示,所述第二网络侧节点102为独立于任一所述第一网络侧节点101的一个网络侧节点,例如第二网络侧节点102为上述的CCN。
在本公开实施例中,第一网络侧节点101为不同的CU的情况下,第二网络侧节点102还用于控制接入同一所述第一网络侧节点101的多个DU执行MBS同步。
上述实施例中,可以实现CU之间的MBS同步,将MBS同步从DU内部扩展到CU外部,扩展了单频网络SFN传输场景,提高了小区边缘性能和频谱利用率,可用性高。
以上仅为示例性说明,实际应用中,能够通过一个网络侧节点(第二网络侧节点)控制至少一个第一网络侧节点执行MBS同步,第一网络侧节点选自CU或DU的系统架构均应属于本公开的保护范围。
在一些可选实施例中,MBS同步包括以下至少一项:广播业务同步;组播业务同步。
其中,广播业务同步包括以下至少一项:MBS传输信道(MBS Transmission Channel,MTCH)传输同步;MBS控制信道MCCH传输同步。
组播业务同步至少包括:MTCH传输同步。
在一个可能的实现方式中,广播业务同步中的MCCH传输同步包括以下至少一项:MCCH传输内容同步;MCCH传输对应的物理下行控制信道PDCCH传输同步;MCCH传输对应的物理下行共享信道PDSCH传输同步;MCCH传输配置信息同步;其中,所述MCCH传输配置信息用于指示终端接收MCCH的资源位置;MCCH更改通知信息同步。
其中,MCCH传输内容同步是指MCCH信道中传输的控制信息同步。第二网络侧节点102还用于基于节点间信令,控制至少一个所述第一网络侧节点101执行所述MCCH传输内容同步,节点间信令可以为inter-node信令。
其中,MCCH传输对应的物理下行控制信道(Physical Downlink Control Channel,PDCCH)是指用于实现逻辑信道MCCH传输的物理信道PDCCH,PDCCH传输同步包括以下至少一项:PDCCH携带的下行控制信息DCI传输内容同步;DCI传输资源同步。
第二网络侧节点102还用于基于节点间信令,控制至少一个所述第一网络侧节点101执行所述PDCCH传输同步,节点间信令可以为inter-node信令。
其中,MCCH传输对应的物理下行共享信道(Physical Downlink Shared Channel,PDSCH)是指用于实现逻辑信道MCCH传输的物理信道PDSCH。
其中,MCCH传输配置信息用于指示终端接收MCCH的资源位置, 这里的资源位置包括但不限于时域资源位置、频域资源位置、空域资源位置、编码方式、Numerology参数集,Numerology与频域上的一个子载波间隔(SubCarrier Spacing,SCS)相对应。
可选地,MCCH传输配置信息可以携带在SIB中。第二网络侧节点102还用于基于节点间信令,控制至少一个所述第一网络侧节点101执行所述MCCH传输配置信息同步。节点间信令可以为inter-node信令。
其中,MCCH更改通知信息同步包括以下至少一项:所述MCCH更改通知信息对应的PDCCH传输同步;无线网络临时标识RNTI同步,所述RNTI与所述MCCH更改通信信息对应的PDCCH相关联。PDCCH传输同步包括以下至少一项:PDCCH携带的下行控制信息DCI传输内容同步;DCI传输资源同步。同样地,第二网络侧节点102还用于基于节点间信令,控制至少一个所述第一网络侧节点101执行所述PDCCH传输同步,节点间信令可以为inter-node信令。
在另一个可能的实现方式中,广播业务和组播业务包括的MTCH传输同步包括以下至少一项:MTCH传输内容同步;MTCH传输对应的PDCCH传输同步;MTCH对应的PDSCH传输同步;混合自动重传请求HARQ同步。
其中,第二网络侧节点102还用于基于同步(SYNC)协议,控制至少一个所述第一网络侧节点101执行所述MTCH传输内容同步。
其中,MTCH传输对应的PDCCH是指用于实现逻辑信道MTCH传输的物理信道PDCCH,PDCCH传输同步包括以下至少一项:PDCCH携带的下行控制信息DCI传输内容同步;DCI传输资源同步。同样地,第二网络侧节点102还用于基于节点间信令,控制至少一个所述第一网络侧节点101执行所述PDCCH传输同步,节点间信令可以为inter-node信令。
其中,MTCH对应的PDSCH是指用于实现逻辑信道MTCH传输的物理信道PDSCH。
其中,混合自动重传请求(Hybrid Automatic Repeat reQuest,HARQ) 同步包括所述第二网络侧节点102指示的至少一个调度时隙内的HARQ进程数同步。
上述实施例中,可以实现NR系统下的MBS同步,支持广域业务部署,扩展了SFN传输场景,提高了小区边缘性能和频谱利用率,可用性高。
本领域技术人员在考虑说明书及实践这里公开的发明后,将容易想到本公开的其它实施方案。本公开旨在涵盖本公开的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或者惯用技术手段。说明书和实施例仅被视为示例性的,本公开的真正范围和精神由下面的权利要求指出。
应当理解的是,本公开并不局限于上面已经描述并在附图中示出的精确结构,并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (13)

  1. 一种业务同步系统,其特征在于,包括:
    至少一个第一网络侧节点;其中,所述第一网络侧节点为集中单元CU或分布单元DU;
    第二网络侧节点,用于控制至少一个所述第一网络侧节点以执行多播广播业务MBS同步。
  2. 根据权利要求1所述的系统,其特征在于,
    所述第二网络侧节点为所述第一网络侧节点中的任一个网络侧节点;或
    所述第二网络侧节点为独立于任一所述第一网络侧节点的一个网络侧节点。
  3. 根据权利要求1或2所述的系统,其特征在于,所述第二网络侧节点选自以下中的一项:
    CU;
    DU;
    基站;
    独立于CU、DU或基站的一个网络侧节点。
  4. 根据权利要求1所述的系统,其特征在于,所述MBS同步包括以下至少一项:
    广播业务同步;
    组播业务同步。
  5. 根据权利要求4所述的系统,其特征在于,所述广播业务同步包括以下至少一项:
    MBS传输信道MTCH传输同步;
    MBS控制信道MCCH传输同步。
  6. 根据权利要求4所述的系统,其特征在于,所述组播业务同步至少 包括:
    MTCH传输同步。
  7. 根据权利要求5所述的系统,其特征在于,所述MCCH传输同步包括以下至少一项:
    MCCH传输内容同步;
    MCCH传输对应的物理下行控制信道PDCCH传输同步;
    MCCH传输对应的物理下行共享信道PDSCH传输同步;
    MCCH传输配置信息同步;其中,所述MCCH传输配置信息用于指示终端接收MCCH的资源位置;
    MCCH更改通知信息同步。
  8. 根据权利要求7所述的系统,其特征在于,所述MCCH更改通知信息同步包括以下至少一项:
    所述MCCH更改通知信息对应的PDCCH传输同步;
    无线网络临时标识RNTI同步,所述RNTI与所述MCCH更改通信信息对应的PDCCH相关联。
  9. 根据权利要求7所述的系统,其特征在于,所述第二网络侧节点还用于基于节点间信令,控制至少一个所述第一网络侧节点执行所述MCCH传输内容同步、所述PDCCH传输同步、所述MCCH传输配置信息同步中的至少一项。
  10. 根据权利要求4所述的系统,其特征在于,所述广播业务同步或所述组播业务同步中的MTCH传输同步包括以下至少一项:
    MTCH传输内容同步;
    MTCH传输对应的PDCCH传输同步;
    MTCH对应的PDSCH传输同步;
    混合自动重传请求HARQ同步。
  11. 根据权利要求10所述的系统,其特征在于,所述第二网络侧节点还用于基于同步SYNC协议,控制至少一个所述第一网络侧节点执行所述 MTCH传输内容同步。
  12. 根据权利要求10所述的系统,其特征在于,所述HARQ同步包括所述第二网络侧节点指示的至少一个调度时隙内的HARQ进程数同步。
  13. 根据权利要求7-8或10任一项所述的系统,其特征在于,所述PDCCH传输同步包括以下至少一项:
    PDCCH携带的下行控制信息DCI传输内容同步;
    DCI传输资源同步。
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