CN117223259A - Service synchronization system - Google Patents
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- CN117223259A CN117223259A CN202280001110.2A CN202280001110A CN117223259A CN 117223259 A CN117223259 A CN 117223259A CN 202280001110 A CN202280001110 A CN 202280001110A CN 117223259 A CN117223259 A CN 117223259A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 103
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000001360 synchronised effect Effects 0.000 claims description 26
- 230000011664 signaling Effects 0.000 claims description 14
- 230000004048 modification Effects 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 5
- 238000001228 spectrum Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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Abstract
The present disclosure provides a service synchronization system, wherein the system comprises: at least one first network side node; and the second network side node is used for controlling at least one first network side node to execute multicast broadcast service MBS synchronization. The method and the system can realize MBS synchronization under the NR system, support wide area service deployment, expand single frequency network SFN transmission scene, improve cell edge performance and spectrum utilization rate, and have high availability.
Description
The present disclosure relates to the field of communications, and in particular, to a service synchronization system.
Currently, release 17 (R17) only supports multicast broadcast service (Multicast Broadcast Service, MBS) synchronization in an intra-Distributed Unit (intra-DU) scenario, i.e., MBS synchronization for a Single-frequency network (SFN).
However, supporting only SFNs under intra-DUs limits the number of SFN cell deployments and thus the expected gains of SFNs.
Disclosure of Invention
To overcome the problems in the related art, embodiments of the present disclosure provide a service synchronization system.
According to an embodiment of the present disclosure, there is provided 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 distributed unit DU;
and the second network side node is used for controlling at least one first network side node to execute multicast broadcast service MBS synchronization.
Optionally, the second network side node is any network side node in the first network side nodes; or (b)
The second network side node is a network side node independent of any of the first network side nodes.
Optionally, the second network side node is selected from one of the following:
CU；
DU；
a base station;
a network side node independent of CU, DU or base station.
Optionally, the MBS synchronization includes at least one of:
synchronizing broadcast services;
and synchronizing multicast services.
Optionally, the broadcast service synchronization includes at least one of:
the MBS transmission channel MTCH transmission is synchronous;
the MBS control channel MCCH transmission is synchronous.
Optionally, the multicast service synchronization at least includes:
MTCH transmission synchronization.
Optionally, the MCCH transmission synchronization includes at least one of:
the MCCH transmission content is synchronized;
the PDCCH transmission of the physical downlink control channel corresponding to the MCCH transmission is synchronous;
the PDSCH transmission of the physical downlink shared channel corresponding to the MCCH transmission is synchronous;
the MCCH transmission configuration information is synchronized; the MCCH transmission configuration information is used for indicating a resource position of a terminal for receiving the MCCH;
the MCCH change notification information is synchronized.
Optionally, the MCCH modification notification information synchronization includes at least one of:
the PDCCH corresponding to the MCCH modification notification information is synchronous in transmission;
and synchronizing a Radio Network Temporary Identifier (RNTI), wherein the RNTI is associated with the PDCCH corresponding to the MCCH modification communication information.
Optionally, the second network side node is further configured to control at least one first network side node to perform at least one of the MCCH transmission content synchronization, the PDCCH transmission synchronization, and the MCCH transmission configuration information synchronization based on inter-node signaling.
Optionally, the MTCH transmission synchronization in the broadcast service synchronization or the multicast service synchronization includes at least one of:
the MTCH transmission content is synchronized;
PDCCH transmission synchronization corresponding to the MTCH transmission;
PDSCH transmission synchronization corresponding to MTCH;
hybrid automatic repeat request, HARQ, synchronization.
Optionally, the second network side node is further configured to control at least one first network side node to perform the MTCH transmission content synchronization based on a synchronization SYNC protocol.
Optionally, the HARQ synchronization includes HARQ process number synchronization within at least one scheduling slot indicated by the second network side node.
Optionally, the PDCCH transmission synchronization includes at least one of:
synchronizing the transmission content of downlink control information DCI carried by PDCCH;
DCI transmission resource synchronization.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:
the service synchronization system can realize MBS synchronization under an NR system, support wide area service deployment, expand single frequency network SFN transmission scene, improve cell edge performance and spectrum utilization rate, and have high availability.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic architecture diagram of a service synchronization system according to an exemplary embodiment.
Fig. 2 is a schematic architecture diagram of another business synchronization system, shown according to an example embodiment.
Fig. 3A is a schematic architecture diagram of another business synchronization system, according to an example embodiment.
Fig. 3B is a schematic architecture diagram of another business synchronization system, according to an example embodiment.
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of at least one of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
In the 5th generation mobile communication technology (5th Generation Mobile Communication Technology,5G) New air interface (NR) system, MBS service may be marked by MBS service identifier, where the MBS service identifier includes at least one of the following: temporary mobile group identity (Temporary Mobile Group Identity, TMGI), MBS Session identity (MBS Session ID), MBS service flow identity (MBS QoS flow ID).
The transmission modes of the MBS service comprise the following two modes:
in the first transmission mode (multicast transmission), the terminal enters a radio resource control connection state (rrc_connected) to receive transmission configuration information of the MBS service, so that the MBS service can be received. The network side equipment sends the receiving configuration information of the MBS business to the terminal through the terminal exclusive signaling.
The terminal may receive the transmission configuration information of the MBS service in an IDLE state (IDLE) or an INACTIVE state (INACTIVE) or a CONNECTED state (CONNECTED) and receive the MBS service. The network side equipment transmits the receiving configuration information of the MBS service to the terminal through the system information and MBS control channel (MBS Control Channel, MCCH) information. Wherein the system information may be a system information block (System Information Block, SIB).
Considering that the MBS service aims at the single frequency network SFN, the deployment number of the single frequency network SFN cells and the expected gain of the single frequency network SFN are limited. In order to solve the above technical problems, the present disclosure provides the following service synchronization system.
An embodiment of the present disclosure provides a service synchronization system, referring to fig. 1, fig. 1 is a schematic architecture diagram of a service synchronization system according to an embodiment, where the system may include:
at least one first network-side node 101;
a second network side node 102, configured to control at least one of the first network side nodes 101 to perform MBS synchronization.
In the embodiment of the present disclosure, the first network side node 101 may be selected from a Centralized Unit (CU) or a Distributed Unit (DU).
In a possible implementation, the second network-side node 102 is any one of the first network-side nodes 101.
In another possible implementation, the second network-side node 102 may be a network-side node independent of the first network-side node 101.
In another possible implementation, the second network-side node 102 may be a CU, DU, base station, a newly defined network-side node independent of CU, DU or base station. In the present disclosure, the newly defined network side node may be referred to as a central control node (Central Control Node, CCN).
In another possible implementation, the second network-side node 102 is a CCN, which may be used to control at least one of the first network-side nodes 101 to perform MBS synchronization.
Further, the CCN may be CU, DU, base station or a newly defined CCN independent of the above nodes (CU, DU or base station).
In another possible implementation manner, the service synchronization system provided by the present disclosure may be deployed in an NR or a communication system after NR.
In the above embodiment, the service synchronization system includes at least one first network side node and a second network side node, where the second network side node may be used to control the first network side node to implement MBS synchronization, so as to implement MBS synchronization between DUs inside CUs or MBS synchronization between CUs, support wide area service deployment, expand a single frequency network SFN transmission scenario, improve cell edge performance and spectrum utilization, and have high availability.
In some alternative embodiments, referring to fig. 2, in the case where at least one first network side node 101 is at least one DU accessing the same CU, the second network side node 102 may be a CU accessed by at least one first network side node 101.
In the above embodiment, MBS synchronization of at least one DU accessing the same CU may be implemented, that is, MBS synchronization based on an external (inter-DU) distribution unit is implemented, so that the MBS synchronization is extended from the inside of the DU to the inside of the CU in a scenario between DUs, improving cell edge performance and spectrum utilization, and having high availability.
In some alternative embodiments, referring to fig. 3A, at least one of the first network side nodes 101 may be different CUs, and the second network side node 102 may be any one of the at least one first network side nodes 101, that is, the second network side node 102 is any one of the CUs of the first network side node 101.
Alternatively, referring to fig. 3B, the second network-side node 102 is a network-side node independent of any of the first network-side nodes 101, for example, the second network-side node 102 is the above CCN.
In the embodiment of the present disclosure, in the case that the first network side node 101 is a different CU, the second network side node 102 is further configured to control a plurality of DUs accessing the same first network side node 101 to perform MBS synchronization.
In the above embodiment, MBS synchronization between CUs can be realized, and the MBS synchronization is extended from the inside of DU to the outside of CU, so that the SFN transmission scene of the single frequency network is extended, the cell edge performance and the spectrum utilization rate are improved, and the availability is high.
The foregoing is merely exemplary, and in practical applications, at least one first network side node (second network side node) can be controlled by one network side node to perform MBS synchronization, and a system architecture of the first network side node selected from CUs or DUs should all belong to the protection scope of the present disclosure.
In some alternative embodiments, MBS synchronization includes at least one of: synchronizing broadcast services; and synchronizing multicast services.
Wherein the broadcast service synchronization includes at least one of: MBS transport channel (MBS Transmission Channel, MTCH) transmission synchronization; the MBS control channel MCCH transmission is synchronous.
The multicast service synchronization at least comprises: MTCH transmission synchronization.
In one possible implementation, the MCCH transmission synchronization in the broadcast service synchronization includes at least one of the following: the MCCH transmission content is synchronized; the PDCCH transmission of the physical downlink control channel corresponding to the MCCH transmission is synchronous; the PDSCH transmission of the physical downlink shared channel corresponding to the MCCH transmission is synchronous; the MCCH transmission configuration information is synchronized; the MCCH transmission configuration information is used for indicating a resource position of a terminal for receiving the MCCH; the MCCH change notification information is synchronized.
The MCCH transmission content synchronization refers to synchronization of control information transmitted in the MCCH channel. The second network side node 102 is further 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 (Physical Downlink Control Channel, PDCCH) corresponding to MCCH transmission refers to a physical channel PDCCH for implementing logical channel MCCH transmission, and PDCCH transmission synchronization includes at least one of the following: synchronizing the transmission content of downlink control information DCI carried by PDCCH; DCI transmission resource synchronization.
The second network side node 102 is further 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 (Physical Downlink Shared Channel, PDSCH) corresponding to MCCH transmission refers to a physical channel PDSCH for implementing logical channel MCCH transmission.
The MCCH transmission configuration information is used to indicate a resource location of the terminal for receiving the MCCH, where the resource location includes, but is not limited to, a time domain resource location, a frequency domain resource location, a space domain resource location, a coding mode, and a Numerology parameter set, where Numerology corresponds to one subcarrier spacing (SubCarrier Spacing, SCS) in the frequency domain.
Alternatively, the MCCH transmission configuration information may be carried in the SIB. The second network side node 102 is further 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. The inter-node signaling may be inter-node signaling.
Wherein the MCCH modification notification information synchronization includes at least one of: the PDCCH corresponding to the MCCH modification notification information is synchronous in transmission; and synchronizing a Radio Network Temporary Identifier (RNTI), wherein the RNTI is associated with the PDCCH corresponding to the MCCH modification communication information. PDCCH transmission synchronization includes at least one of: synchronizing the transmission content of downlink control information DCI carried by PDCCH; DCI transmission resource synchronization. Likewise, the second network side node 102 is further 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.
In another possible implementation, the MTCH transmission synchronization included in the broadcast service and the multicast service includes at least one of: the MTCH transmission content is synchronized; PDCCH transmission synchronization corresponding to the MTCH transmission; PDSCH transmission synchronization corresponding to MTCH; hybrid automatic repeat request, HARQ, synchronization.
Wherein the second network side node 102 is further configured to control at least one of the first network side nodes 101 to perform the MTCH transmission content synchronization based on a Synchronization (SYNC) protocol.
The PDCCH corresponding to the MTCH transmission refers to a physical channel PDCCH for implementing the logical channel MTCH transmission, and the PDCCH transmission synchronization includes at least one of the following: synchronizing the transmission content of downlink control information DCI carried by PDCCH; DCI transmission resource synchronization. Likewise, the second network side node 102 is further 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 a physical channel PDSCH for implementing the logical channel MTCH transmission.
Wherein the hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) synchronization comprises HARQ process number synchronization within at least one scheduling slot indicated by the second network side node 102.
In the embodiment, MBS synchronization under an NR system can be realized, wide area service deployment is supported, SFN transmission scene is expanded, cell edge performance and spectrum utilization rate are improved, and availability is high.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (13)
- A service synchronization system, comprising:at least one first network side node; wherein, the first network side node is a centralized unit CU or a distributed unit DU;and the second network side node is used for controlling at least one first network side node to execute multicast broadcast service MBS synchronization.
- The system of claim 1, wherein the system further comprises a controller configured to control the controller,the second network side node is any network side node in the first network side nodes; or (b)The second network side node is a network side node independent of any of the first network side nodes.
- The system according to claim 1 or 2, wherein the second network side node is selected from one of the following:CU；DU；a base station;a network side node independent of CU, DU or base station.
- The system of claim 1, wherein the MBS synchronization comprises at least one of:synchronizing broadcast services;and synchronizing multicast services.
- The system of claim 4, wherein the broadcast service synchronization comprises at least one of:the MBS transmission channel MTCH transmission is synchronous;the MBS control channel MCCH transmission is synchronous.
- The system of claim 4, wherein the multicast service synchronization comprises at least:MTCH transmission synchronization.
- The system of claim 5, wherein the MCCH transmission synchronization comprises at least one of:the MCCH transmission content is synchronized;the PDCCH transmission of the physical downlink control channel corresponding to the MCCH transmission is synchronous;the PDSCH transmission of the physical downlink shared channel corresponding to the MCCH transmission is synchronous;the MCCH transmission configuration information is synchronized; the MCCH transmission configuration information is used for indicating a resource position of a terminal for receiving the MCCH;the MCCH change notification information is synchronized.
- The system of claim 7, wherein the synchronization of MCCH modification notification information comprises at least one of:the PDCCH corresponding to the MCCH modification notification information is synchronous in transmission;and synchronizing a Radio Network Temporary Identifier (RNTI), wherein the RNTI is associated with the PDCCH corresponding to the MCCH modification communication information.
- The system of claim 7, wherein the second network side node is further configured to control at least one of the first network side node to perform at least one of the MCCH transmission content synchronization, the PDCCH transmission synchronization, and the MCCH transmission configuration information synchronization based on inter-node signaling.
- The system of claim 4, wherein the synchronization of the MTCH transmission in the synchronization of the broadcast service or the synchronization of the multicast service comprises at least one of:the MTCH transmission content is synchronized;PDCCH transmission synchronization corresponding to the MTCH transmission;PDSCH transmission synchronization corresponding to MTCH;hybrid automatic repeat request, HARQ, synchronization.
- The system of claim 10, wherein the second network side node is further configured to control at least one of the first network side nodes to perform the MTCH transmission content synchronization based on a synchronization SYNC protocol.
- The system of claim 10, wherein the HARQ synchronization comprises HARQ process number synchronization within at least one scheduled time slot indicated by the second network side node.
- The system according to any of claims 7-8 or 10, wherein the PDCCH transmission synchronization comprises at least one of:synchronizing the transmission content of downlink control information DCI carried by PDCCH;DCI transmission resource synchronization.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2022/086435 WO2023197173A1 (en) | 2022-04-12 | 2022-04-12 | Service synchronization system |
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| CN117223259A true CN117223259A (en) | 2023-12-12 |
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| CN202280001110.2A Pending CN117223259A (en) | 2022-04-12 | 2022-04-12 | Service synchronization system |
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| WO (1) | WO2023197173A1 (en) |
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| US20230180247A1 (en) * | 2021-12-08 | 2023-06-08 | Qualcomm Incorporated | Signaling for multicast broadcast service single frequency network communications |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2592909T3 (en) * | 2006-09-19 | 2016-12-02 | Alcatel Lucent | Procedure, server and base station for synchronizing portions of broadcast and multicast frames on WiMAX systems |
| CN101350663A (en) * | 2007-07-18 | 2009-01-21 | 中兴通讯股份有限公司 | Method and system for data synchronization of multimedia multicast and broadcast service |
| KR20130051826A (en) * | 2011-11-10 | 2013-05-21 | 한국전자통신연구원 | Apparatus and method for synchronization control for mbs services |
| BR112022013557A2 (en) * | 2020-01-08 | 2022-09-13 | Zte Corp | SYSTEM AND METHOD FOR MULTIBROADCAST/BROADCAST SERVICE DATA |
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