CN113950148B - Broadcast method and system of SC-MCCH (broadcast multicast control channel) - Google Patents

Broadcast method and system of SC-MCCH (broadcast multicast control channel) Download PDF

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Publication number
CN113950148B
CN113950148B CN202010691375.2A CN202010691375A CN113950148B CN 113950148 B CN113950148 B CN 113950148B CN 202010691375 A CN202010691375 A CN 202010691375A CN 113950148 B CN113950148 B CN 113950148B
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mcch
cell
configuration information
bwp
broadcasting
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CN113950148A (en
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魏立梅
袁乃华
陈迎
范晨
周志宏
朱玉梅
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Chengdu TD Tech Ltd
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Chengdu TD Tech Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention provides a broadcasting method and a system of SC-MCCH, which uniformly configures a single-cell multicast control channel SC-MCCH for each cell of a broadcast Multimedia Broadcast Multicast Service (MBMS); for each uniformly configured SC-MCCH, determining a configuration mode of a special parameter of a PDSCH and executing corresponding configuration, wherein the PDSCH is used for bearing the uniformly configured SC-MCCH; determining a base station corresponding to each cell broadcasting the MBMS, generating base station special SC-MCCH configuration information for each corresponding base station, and transmitting the base station special SC-MCCH configuration information to the corresponding base station; the invention realizes that the UE does not need to re-receive the SIB in the target cell by uniformly configuring the SC-MCCH for each cell broadcasting the MBMS, and shortens or eliminates the interruption existing when the UE receives the corresponding SC-MCCH in the target cell.

Description

Broadcast method and system of SC-MCCH (broadcast multicast control channel)
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a broadcast method and system of an SC-MCCH.
Background
Multimedia broadcast multicast service (Multimedia Broadcast Multicast Service, MBMS for short) is a typical service supported by long term evolution (Long Term Evolution, LTE for short) systems in The third generation partnership project (The 3rd Generation Partnership Project, 3GPP for short) protocols, and The service may be transmitted to a specific User Equipment (UE) through a unicast bearer, or may be broadcast in a cell through an MBMS bearer.
With the continuous development of wireless communication technology, a 5G System (5G System, abbreviated as 5 GS) has been put into life. Currently, related patents have proposed a method for broadcasting MBMS in a single-cell point-to-multipoint (Single Cell Point to Multipoint, SC-PTM) manner in a New Radio Access (NR) cell in 5 GS.
In a corresponding method, one MBMS is carried over a single cell multicast traffic channel (Single Cell Multicast Traffic Channel, abbreviated SC-MCCH) and SC-PTM configuration information is carried over a single cell multicast control channel (Single Cell Multicast Control Channel, abbreviated SC-MCCH). The UE can receive the corresponding MBMS according to the configuration information of one MBMS in the SC-PTM configuration information.
In order for the UE to be able to receive the SC-MCCH, semi-static configuration information and dynamic scheduling information of the SC-MCCH need to be broadcasted to the UE. Semi-static configuration information of one SC-MCCH is broadcast through a corresponding SIB. Dynamic scheduling information of one SC-MCCH is broadcast to UEs in a DCI format on PDCCH scrambled with a Single Cell-radio network temporary identity (SC-RNTI) through CRC. The SC-RNTI is used for identifying the SC-MCCH on an air interface. The UE can receive the dynamic scheduling information of the SC-MCCH according to the semi-static configuration information of the SC-MCCH, receive the special PDSCH of the SC-MCCH according to the dynamic scheduling information of the SC-MCCH, and obtain the SC-PTM configuration information carried on the SC-MCCH from the PDSCH.
In the 5GS on-channel networking scenario, each cell that is geographically continuously distributed constitutes an area. And transmitting uplink information by adopting the same frequency point in each cell in the area, and transmitting downlink information by adopting the same frequency point. In each cell broadcasting the MBMS in this area, the SC-MCCH is broadcast.
In this region, when the UE moves from the source cell to the target cell, in order to receive the SC-MCCH in the target cell, the UE needs to first receive a corresponding SIB in the target cell to obtain semi-static configuration information of the SC-MCCH on the SIB. And then receiving the SC-MCCH in the target cell according to the semi-static configuration information of the SC-MCCH. There is a brief break from the UE leaving the source cell until the UE receives the SC-MCCH in the target cell. For a UE receiving one MBMS in the source cell, the interruption causes an interruption of the UE receiving the corresponding MBMS in the target cell.
Disclosure of Invention
Aiming at the problems, the embodiment of the invention provides a broadcasting method and a broadcasting system of an SC-MCCH.
In a first aspect, an embodiment of the present invention provides a broadcast method of an SC-MCCH, applied to a multi-cell coordination entity MCE, where the method includes: uniformly configuring a single-cell multicast control channel SC-MCCH for each cell of a broadcast multimedia broadcast multicast service MBMS; for each uniformly configured SC-MCCH, determining a configuration mode of a special parameter of a physical downlink control channel PDSCH, and executing corresponding configuration, wherein the PDSCH is used for bearing the uniformly configured SC-MCCH; determining a base station corresponding to each cell broadcasting the MBMS, generating base station special SC-MCCH configuration information for each corresponding base station, and transmitting the base station special SC-MCCH configuration information to the corresponding base station.
Optionally, the uniformly configuring a single-cell multicast control channel SC-MCCH for each cell of the broadcast multimedia broadcast multicast service MBMS includes: in each cell broadcasting MBMS, uniformly configuring an SC-MCCH; or, in each cell broadcasting the MBMS, bandwidth fragmentation BWP for broadcasting the MBMS is uniformly configured, and one SC-MCCH is uniformly configured on each uniformly configured BWP.
Optionally, the uniformly configuring the single-cell multicast control channel SC-MCCH includes: for each uniformly configured SC-MCCH, determining a BWP for transmitting the uniformly configured SC-MCCH, broadcasting the SC-MCCH on the BWP, uniformly configuring a control resource CORESET and a search space for a physical downlink control channel PDCCH on the BWP, wherein the PDCCH is used for carrying dynamic scheduling information of the uniformly configured SC-MCCH, a cyclic redundancy check CRC of the PDCCH is scrambled with a single cell-radio network temporary identity SC-RNTI, and the SC-RNTI is used for identifying the SC-MCCH on an air interface.
Optionally, the uniformly configuring the single-cell multicast control channel SC-MCCH further includes: and for each uniformly configured SC-MCCH, uniformly configuring broadcast parameters for the SC-MCCH, and broadcasting the SC-MCCH on the BWP according to the uniformly configured broadcast parameters.
Optionally, the base station specific SC-MCCH configuration information includes: configuration information and a cell identification list of each uniformly configured SC-MCCH; the configuration information of each uniformly configured SC-MCCH includes: the configuration information of the BWP of the SC-MCCH, the configuration information of the broadcast parameters adopted by the SC-MCCH, the configuration information of CORESET and search space uniformly configured for the PDCCH on the BWP of the SC-MCCH, the cell-level parameter list and the BWP-level parameter list.
In a second aspect, the present invention provides a broadcast method of SC-MCCH, applied to a base station, the method comprising: receiving and storing the SC-MCCH configuration information special for the base station sent by a multi-cell coordination entity MCE; broadcasting each uniformly configured SC-MCCH in each corresponding cell according to the base station dedicated SC-MCCH configuration information; wherein, the base station dedicated SC-MCCH configuration information is generated by an MCE according to the following mode: uniformly configuring a single-cell multicast control channel SC-MCCH for each cell of a broadcast multimedia broadcast multicast service MBMS; for each uniformly configured SC-MCCH, determining a configuration mode of a special parameter of a PDSCH and executing corresponding configuration, wherein the PDSCH is used for bearing the uniformly configured SC-MCCH; and determining a base station corresponding to each cell broadcasting the MBMS, and generating base station special SC-MCCH configuration information for each corresponding base station.
Optionally, before broadcasting each uniformly configured SC-MCCH in each corresponding cell according to the base station specific SC-MCCH configuration information, the method further includes: judging whether SC-PTM configuration information carried by the uniformly configured SC-MCCH is empty or not; and if the configuration information is not null, broadcasting the uniformly configured SC-MCCH in each corresponding cell according to the special SC-MCCH configuration information of the base station.
Optionally, the base station specific SC-MCCH configuration information includes: configuration information and a cell identification list of each uniformly configured SC-MCCH; the configuration information of any one of the uniformly configured SC-MCCH comprises: broadcasting configuration information of the BWP of the SC-MCCH, configuration information of broadcast parameters adopted by the SC-MCCH, configuration information of CORESET and search space uniformly configured for PDCCH on the BWP broadcasting the SC-MCCH, a cell-level parameter list or a BWP-level parameter list; the broadcasting each uniformly configured SC-MCCH in each corresponding cell according to the base station specific SC-MCCH configuration information includes: determining each cell broadcasting the SC-MCCH according to a cell identification list in the SC-MCCH configuration information special for the base station; determining the BWP broadcasting the SC-MCCH according to the configuration information of the BWP broadcasting the SC-MCCH; determining the broadcast parameters adopted by the SC-MCCH according to the configuration information of the broadcast parameters adopted by the SC-MCCH; according to configuration information of CORESET and search space which are uniformly configured for PDCCH on BWP broadcasting the SC-MCCH, determining CORESET and search space corresponding to PDCCH carrying the SC-MCCH dynamic scheduling information; determining parameters of the SC-MCCH special PDSCH according to a cell-level parameter list and a BWP-level parameter list; broadcasting the SCMCCH-specific PDSCH by adopting a corresponding BWP and corresponding broadcasting parameters in each cell broadcasting the SCMCCH, and allocating time-frequency resources for the SCMCCH-specific PDSCH on the BWP broadcasting the SCMCCH in each cell by a base station, wherein the SCMCCH-specific PDSCH is transmitted by adopting the allocated time-frequency resources on the corresponding BWP in the corresponding cell; in each cell broadcasting an SC-MCCH, on a corresponding BWP, distributing CCE resources to PDCCH carrying the SC-MCCH dynamic scheduling information in a corresponding search space on a corresponding CORESET, wherein the PDCCH is broadcasted by adopting the distributed CCE resources, CRC of the PDCCH is scrambled by an SC-RNTI, and a DCI format on the PDCCH is the dynamic scheduling information of the special PDSCH of the SC-MCCH; a corresponding SIB is transmitted on the BWP broadcasting the SC-MCCH in each cell broadcasting the SC-MCCH for broadcasting semi-static configuration information of the SC-MCCH to the user equipment UE.
In a third aspect, the present invention provides a broadcast method of SC-MCCH, applied to a user equipment UE, the method comprising: before User Equipment (UE) moves from a source cell to a target cell, the UE obtains corresponding semi-static configuration information of a uniformly configured SC-MCCH in the source cell; and the UE receives the corresponding SC-MCCH in the target cell according to the semi-static configuration information of the uniformly configured SC-MCCH obtained in the source cell.
Optionally, the semi-static configuration information of the SC-MCCH includes: configuration information of BWP of broadcast SC-MCCH, configuration information of CORESET and search space which are uniformly configured for PDCCH on the BWP of broadcast SC-MCCH, a cell-level parameter list and a BWP-level parameter list, configuration information and configuration mode of broadcast parameters adopted by the SC-MCCH; the UE receives corresponding SC-MCCH in a target cell according to the semi-static configuration information of the uniformly configured SC-MCCH obtained in a source cell, and the method comprises the following steps: the UE monitors PDCCH scrambled by SC-RNTI for CRC on PDCCH occasion indicated by broadcast parameters on corresponding search space on corresponding CORESET on corresponding BWP in a target cell according to the semi-static configuration information of the SC-MCCH obtained in a source cell; when the corresponding PDCCH is monitored, the UE obtains the dynamic scheduling information of the corresponding SC-MCCH according to the DCI format on the PDCCH, and receives the corresponding special PDSCH of the SC-MCCH according to the dynamic scheduling information of the SC-MCCH.
Optionally, the method further comprises: the UE receives corresponding SIB in parallel while monitoring each PDCCH opportunity on a corresponding search space in a target cell; after obtaining the semi-static configuration information of the SC-MCCH on the corresponding SIB, the UE stops monitoring the PDCCH on each PDCCH occasion in the target cell, and monitors the corresponding PDCCH only on the PDCCH occasion indicated by the broadcast parameter in the semi-static configuration information of the SC-MCCH.
In a fourth aspect, the present invention provides a multi-cell coordination entity, comprising: the configuration module is used for uniformly configuring a single-cell multicast control channel SC-MCCH for each cell of a broadcast multimedia broadcast multicast service MBMS; for each uniformly configured SC-MCCH, determining a configuration mode of a special parameter of a PDSCH and executing corresponding configuration, wherein the PDSCH is used for bearing the uniformly configured SC-MCCH; and the sending module is used for determining the base station corresponding to each cell broadcasting the MBMS, generating base station special SC-MCCH configuration information for each corresponding base station, and transmitting the base station special SC-MCCH configuration information to the corresponding base station.
In a fifth aspect, the present invention provides a base station, comprising: the receiving module is used for receiving and storing the base station special SC-MCCH configuration information sent by the multi-cell coordination entity MCE; and the broadcasting module is used for broadcasting each uniformly configured SC-MCCH in each corresponding cell according to the SC-MCCH configuration information special for the base station.
In a sixth aspect, the present invention provides a user equipment, including: the first processing module is used for acquiring semi-static configuration information of corresponding uniformly configured SC-MCCH in a source cell before User Equipment (UE) moves from the source cell to a target cell; and the second processing module is used for receiving the corresponding SC-MCCH in the target cell according to the semi-static configuration information of the uniformly configured SC-MCCH obtained in the source cell.
In a seventh aspect, the present invention provides a broadcast system of a single-cell multicast control channel, including a multi-cell coordination entity, a base station, and a user equipment; wherein the multi-cell coordination entity performs the method according to any of the first aspects; the base station performing the method of any of the second aspects; the user equipment performs the method according to any of the third aspects.
The invention provides a broadcasting method and a system of SC-MCCH, which uniformly configures a single-cell multicast control channel SC-MCCH for each cell of a broadcast Multimedia Broadcast Multicast Service (MBMS); for each uniformly configured SC-MCCH, determining a configuration mode of a special parameter of a PDSCH and executing corresponding configuration, wherein the PDSCH is used for bearing the uniformly configured SC-MCCH; determining a base station corresponding to each cell broadcasting the MBMS, generating base station special SC-MCCH configuration information for each corresponding base station, and transmitting the base station special SC-MCCH configuration information to the corresponding base station; the invention realizes that the UE does not need to re-receive the SIB in the target cell by uniformly configuring the SC-MCCH for each cell broadcasting the MBMS, and shortens or eliminates the interruption existing when the UE receives the corresponding SC-MCCH in the target cell.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention;
fig. 2 is a flowchart of a broadcast method of SC-MCCH according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a multi-cell coordination entity according to the present invention;
fig. 4 is a schematic structural diagram of a base station according to the present invention;
fig. 5 is a schematic structural diagram of a ue according to the present invention;
fig. 6 is a schematic hardware structure of a multi-cell coordination entity according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the 5GS on-channel networking scenario, each cell that is geographically continuously distributed constitutes an area. And transmitting uplink information by adopting the same frequency point in each cell in the area, and transmitting downlink information by adopting the same frequency point. In each cell broadcasting the MBMS in this area, the SC-MCCH is broadcast.
In this region, when the UE moves from the source cell to the target cell, in order to receive the SC-MCCH in the target cell, the UE needs to first receive a corresponding SIB in the target cell to obtain semi-static configuration information of the SC-MCCH on the SIB. And then receiving the SC-MCCH in the target cell according to the semi-static configuration information of the SC-MCCH. There is a brief break from the UE leaving the source cell until the UE receives the SC-MCCH in the target cell. For UEs receiving one MBMS in the source cell, the interruption also causes interruption of the UE's reception of the corresponding MBMS in the target cell.
In view of the above technical problems, the technical concept of the present invention is to uniformly configure SC-MCCH in each cell broadcasting MBMS, and for each uniformly configured SC-MCCH, the semi-static configuration information adopted by the SC-MCCH in broadcasting each cell is the same or substantially the same. After the UE moves from the source cell to the target cell, the corresponding SC-MCCH can be directly received in the target cell according to the semi-static configuration information of the SC-MCCH which is uniformly configured and is obtained in the source cell, and the corresponding SIB is not required to be received in the target cell before the corresponding SC-MCCH is received, so that the interruption generated when the target cell receives the SC-MCCH is eliminated, and further, the interruption generated in the process that the UE continuously receives an MBMS in the target cell can be shortened.
Fig. 1 is a schematic diagram of a system architecture provided by an embodiment of the present invention, which is used to implement an SC-MCCH broadcasting method provided by the embodiment of the present invention. As shown in fig. 1, a system architecture provided in an embodiment of the present invention includes: a Multi-cell coordination entity (Multi-cell Coodinated Entity, MCE) 1, 5G base stations 2 (gNB) and User Equipment (UE) 3, where, in the same-frequency networking scenario, a plurality of geographically adjacent cells form a region, and a cell in the region generally belongs to a plurality of 5G base stations 2, so as to implement a function of broadcasting MBMS in each cell in the region, an interface is configured between the MCE 1 and each 5G base station 2 located in the region, and through the interface, the MCE 1 interacts information with the corresponding 5G base station 2. In the above system architecture, the SC-MCCH is broadcast in each cell broadcasting the MBMS through cooperation between the MCE 1 and the 5G base station 2. In each cell broadcasting the MBMS, for a UE 3 having a function of receiving the MBMS, when the UE needs to receive the MBMS, the UE receives the SC-MCCH in the cell regardless of the state of the UE, obtains configuration information of each MBMS broadcasted in the cell from the received SC-MCCH, and receives the corresponding MBMS according to the configuration information of one MBMS.
Specifically, the broadcasting method of the SC-MCCH of the following embodiment is performed through cooperation among the multi-cell coordination entity 1, the base station 2 and the user equipment 3.
The invention provides a broadcast method of an SC-MCCH, and fig. 2 is a flow chart of the broadcast method of the SC-MCCH provided by the embodiment of the invention. As shown in fig. 2, the broadcasting method of the SC-MCCH includes:
step 101, uniformly configuring a single-cell multicast control channel SC-MCCH for each cell of a broadcast multimedia broadcast multicast service MBMS.
Specifically, for each uniformly configured SC-MCCH, a BWP for transmitting the uniformly configured SC-MCCH is determined, the SC-MCCH is broadcast on the BWP, CORESET and a search space are uniformly configured for a PDCCH on the BWP, the PDCCH is used for carrying dynamic scheduling information of the uniformly configured SC-MCCH, a CRC of the PDCCH is scrambled with an SC-RNTI, and the SC-RNTI is used for identifying the SC-MCCH on an air interface.
Optionally, for each uniformly configured SC-MCCH, a broadcast parameter may also be uniformly configured for the SC-MCCH, where the SC-MCCH is broadcast on the BWP located according to the uniformly configured broadcast parameter.
The main execution body of the step is MCE. In the 5GS same-frequency networking scene, each cell which is continuously distributed in geography forms an area, and in the area, each cell adopts the same frequency point to transmit uplink information and adopts the same frequency point to transmit downlink information. In each cell broadcasting MBMS in the area, the MCE may uniformly configure the SC-MCCH.
In step 101, SC-MCCH is uniformly configured for each cell broadcasting MBMS, including: in each cell broadcasting MBMS, uniformly configuring an SC-MCCH; or, in each cell broadcasting the MBMS, bandwidth fragmentation BWP for broadcasting the MBMS is uniformly configured, and one SC-MCCH is uniformly configured on each uniformly configured BWP. The following describes in detail the above two ways of uniformly configuring the SC-MCCH.
The first way is: and uniformly configuring an SC-MCCH in each cell, wherein the SC-MCCH is used for bearing SC-PTM configuration information of the corresponding cell, and the SC-PTM configuration information is a set of MBMS configuration information of each MBMS broadcasted in the corresponding cell.
Further, determining a BWP for transmitting the uniformly configured SC-MCCH, and uniformly configuring CORESET and a search space for a PDCCH on the BWP, where the PDCCH is used to carry uniformly configured dynamic scheduling information of the SC-MCCH; and the CRC of the PDCCH is scrambled by using an SC-RNTI, wherein the SC-RNTI is used for identifying the uniformly configured SC-MCCH on an air interface.
Optionally, the broadcast parameters may be uniformly configured for the uniformly configured SC-MCCH, where the SC-MCCH is broadcast on the BWP where the SC-MCCH is located according to the uniformly configured broadcast parameters.
The SC-MCCH configured uniformly in the above manner is transmitted in each cell using the same BWP, and the PDCCH carrying the dynamic scheduling information of the SC-MCCH configured uniformly in each cell is transmitted in the same BWP using the same CORESET and the same search space.
When the broadcast parameters are uniformly configured for the uniformly configured SC-MCCH, the uniformly configured SC-MCCH is not only transmitted by adopting the same BWP but also broadcast by adopting the same broadcast parameters in each cell.
The second way is: in each cell, bandwidth-slicing BWP for broadcasting MBMS is uniformly configured, and an SC-MCCH is uniformly configured on each uniformly configured BWP for carrying SC-PTM configuration information, where the SC-PTM configuration information includes at least SC-PTM configuration information of the BWP for broadcasting the SC-MCCH. The SC-PTM configuration information of one BWP is a set of MBMS configuration information of each MBMS broadcasted on the BWP.
Furthermore, firstly, each BWP of the broadcast MBMS is uniformly configured in each cell, and any implementation method in the prior art can be adopted, which is not described herein; and then uniformly configuring an SC-MCCH on each uniformly configured BWP, wherein the SC-MCCH is transmitted on the BWP, and uniformly configuring CORESET and a search space for a PDCCH on the BWP, wherein the PDCCH is used for carrying dynamic scheduling information of the SC-MCCH on the BWP, and the CRC of the PDCCH is scrambled by the SC-RNTI. Each uniformly configured SC-MCCH is uniquely identified by a BWP ID and an SC-RNTI of the BWP broadcasting the SC-MCCH.
Optionally, on each uniformly configured BWP, the broadcast parameters are uniformly configured for the uniformly configured SC-MCCH on the BWP, and the SC-MCCH is broadcast on the BWP located according to the uniformly configured broadcast parameters.
In the above manner, on any one BWP configured uniformly, the SC-MCCH configured uniformly for the BWP is transmitted with the same BWP in each cell, and the PDCCH carrying the dynamic scheduling information of the SC-MCCH configured uniformly for the BWP is transmitted with the same BWP, the same CORESET and the same search space in each cell.
For each uniformly configured BWP, when broadcast parameters are uniformly configured for the uniformly configured SC-MCCH on the BWP, the uniformly configured SC-MCCH is not only transmitted by using the same BWP but also broadcast by using the same broadcast parameters in each cell.
Specifically, the value of the SC-RNTI is explicitly defined in the 3GPP protocol. In uniformly configuring the SC-MCCH according to a first mode, the SC-RNTI is used for identifying the SC-MCCH unique to the cell; in uniformly configuring the SC-MCCH in the second manner, the uniformly configured SC-MCCH on each BWP is uniquely identified by the BWP ID and the SC-RNTI broadcasting the SC-MCCH.
When the broadcast parameters are not uniformly configured for the uniformly configured SC-MCCH, the constraint on the uniformly configured SC-MCCH can be reduced, and the effect of the invention is not influenced. The specific analysis is described later.
Step 102, for each uniformly configured SC-MCCH, determining a configuration mode of a PDSCH dedicated parameter, and executing corresponding configuration, where the PDSCH is used to carry the uniformly configured SC-MCCH.
The main execution body of the step is MCE.
The SC-MCCH is mapped onto a separate downlink shared channel (Downlink Shared Channel, DL-SCH for short), and the DL-SCH is mapped onto a separate PDSCH. In the embodiment of the invention, the PDSCH special for the SC-MCCH is used for referring to the PDSCH carrying the SC-MCCH. The SC-MCCH specific PDSCH undergoes the same processing steps as the general PDSCH (PDSCH carrying DTCH or DCCH). However, since the SC-MCCH specific PDSCH is not transmitted to a specific UE but broadcast within a cell, in the experienced processing steps, the SC-MCCH specific PDSCH performs the following SC-MCCH specific processing:
(1) The SC-MCCH special PDSCH only carries one TB;
(2) QPSK is adopted;
(3) A TB on the special PDSCH of the SC-MCCH adopts single-layer mapping and single antenna port transmission;
(4) The SCMCCH special PDSCH adopts a time domain resource allocation table suitable for the SC-MCCH in time domain resource allocation.
In the prior art, 4 time domain resource allocation tables have been defined in the 3GPP protocol: default table a for NCP, default table a for ECP, default table B, and default table C for allocating time domain resources to a general PDSCH. These tables and their usage scenarios are referred to in the prior art and are not described in detail here.
In this embodiment, in order to allocate time domain resources to the SC-MCCH specific PDSCH, 1 or more time domain resource allocation tables suitable for MBMS need to be defined in the 3GPP protocol. When a plurality of tables are defined, it is necessary to explicitly define a scene to which each table is applicable.
In this embodiment, the SC-MCCH dedicated PDSCH adopts MCS table applicable to SC-MCCH in time-frequency resource allocation.
Specifically, 3 MCS tables have been defined in the 3GPP protocol for determining modulation order, target code rate and spectral efficiency of the general PDSCH. In particular, the 3 tables and applicable scenarios of the 3 tables may refer to descriptions in the prior art, and are not described in detail here.
In order to allocate time-frequency resources to the SC-MCCH specific PDSCH, 1 or more MCS tables applicable to the SC-MCCH need to be defined in the 3GPP protocol. When a plurality of tables are defined, it is necessary to explicitly define a scene to which each table is applicable. Preferably, the MCS table adopted by the PDSCH dedicated for the SC-MCCH is the same as the table adopted by the PDSCH carrying the system message and the paging message in the 3GPP protocol, namely: as with PDSCH carrying system messages and paging messages, the SC-MCCH specific PDSCH employs MCS table 1 in 3gpp ts38.214 section 5.1.3.1.
In the processing steps experienced, the SC-MCCH specific PDSCH and the general PDSCH use the same parameters. However, in some parameter configurations, the PDSCH dedicated to the SC-MCCH needs to use a configuration method dedicated to the SC-MCCH. Specifically, in the present invention, the SC-MCCH specific PDSCH adopts the SC-MCCH specific configuration method in the following parameter configuration, which is specifically as follows:
for the PDSCH time domain resource allocation list, two configuration methods are included:
configuration method 1:
it is well defined in the 3GPP protocol: there is no need to configure PDSCH time domain resource allocation list for SC-MCCH, and this parameter need not be configured under this specification.
Configuration method 2:
it is well defined in the 3GPP protocol: the SC-MCCH may be configured with a PDSCH time domain resource allocation list. Under the provision, when a PDSCH time domain resource allocation list is allocated to one SC-MCCH, time domain resources are allocated to the SC-MCCH based on the list.
Based on the above-mentioned provisions, when a PDSCH time domain resource allocation list needs to be configured for one SC-MCCH, the PDSCH time domain resource allocation list may be configured in units of BWP and cell, respectively.
For the followingn RNTI And n ID : in PDSCH bit scrambling, c is calculated using these two parameters and the following equation init 。
c init ＝n RNTI ·2 15 +q·2 14 +n ID
It is well defined in the 3GPP protocol: for the PDSCH special for SC-MCCH, n RNTI ＝SC-RNTI，Under this specification, the parameters need not be configured to the UE.
For interleaving parameters: the PRB beam Length is specifically configured as follows:
configuration method 1 of interleaving parameters:
it is well defined in the 3GPP protocol: the SC-MCCH specific PDSCH does not employ interlace mapping in the VRB to PRB mapping. Based on this specification, the above interleaving parameters need not be configured for the SC-MCCH specific PDSCH.
Configuration method 2 of interleaving parameters:
in the 3GPP protocol, provision is made for: when the interleaving parameters are not configured, the SC-MCCH specific PDSCH is not interleaved in the VRB to PRB mapping, and under this rule, if the SC-MCCH specific PDSCH is interleaved, the interleaving parameters may be configured in units of BWP and cell, respectively.
For PDSCH resource allocation parameters: pdsch-Aggregation factor, resource allocation, pdsch-Aggregation factor: for indicating the number of repeated transmissions per TB on PDSCH.
resourceAllocation: indicating the type of resource allocation employed by PDSCH.
Configuration method 1 of PDSCH resource allocation parameters:
it is well defined in the 3GPP protocol: under this specification, PDSCH-aggregation factor=x, which x=1 or 2 or 4 or 8, for SC-MCCH specific PDSCH, no configuration of this parameter is required.
In addition, it is explicitly specified in the 3GPP protocol: the SC-MCCH special PDSCH adopts a radio resource allocation type 1/0. Under this specification, there is no need to configure resource allocation for the SC-MCCH specific PDSCH.
Configuration method 2 of PDSCH resource allocation parameters:
in the 3GPP protocol, provision is made for: when PDSCH-aggregation factor is not configured, the default SC-MCCH dedicated PDSCH repetition transmission number is X, x=1 or 2 or 4 or 8. Under the rule, if the number of repeated transmissions is not a default value, the parameters may be configured in units of BWP or cell, respectively.
In the 3GPP protocol, provision is made for: when the resource allocation is not configured, the default SC-MCCH dedicated PDSCH adopts the radio resource allocation type 1. Under the rule, if the resource allocation is not a default value, the parameter may be configured in units of BWP or cell, respectively.
For DMRS related parameters:DMRS configuration type, maxLength and DMRS-addition position
For determining parameters Cinit,/in DMRS sequence generation according to the following formula>
The DMRS configuration type may be: configuration type 1 or configuration type 2;
maxLength: for indicating whether the DMRS employs a single-symbol DMRS or a dual-symbol DMRS;
dmrs-additional position: the DMRS is added with a symbol position indication, and the value range is as follows: 0. 1, 2 and 3;
It is well defined in the 3GPP protocol: for SC-MCCH dedicated PDSCH, < > for the user equipment>Under this specification, no configuration is necessary>
It should be noted that, DMRS-specific parameters are used to refer to: DMRS configuration type, maxLength and DMRS-AdditionalPosition. The configuration method of the special parameters of the DMRS is as follows:
configuration method 1 of DMRS-specific parameters:
it is well defined in the 3GPP protocol: for the SC-mcch dedicated PDSCH, when the PDSCH adopts PDSCH mapping type a, the DMRS configuration type of the PDSCH is: configuration type 1 or configuration type 2; when the PDSCH adopts PDSCH mapping type B, the DMRS configuration type of the PDSCH is: configuration type 1 or configuration type 2. Under this specification, the parameters need not be configured to the UE.
It is well defined in the 3GPP protocol: the SC-MCCH specific PDSCH employs single symbol DMRS/double symbol DMRS, under which the parameter does not need to be configured to the UE.
It is well defined in the 3GPP protocol: for the SC-MCCH special PDSCH, dmrs-additionalPosition is a fixed value. When PDSCH adopts PDSCH mapping type A and PDSCH adopts single symbol DMRS, the fixed value is 0/1/2/3; in other scenarios, the fixed value is 0/1. Under this specification, the parameters need not be configured to the UE.
Configuration method 2 of DMRS-specific parameters:
it is well defined in the 3GPP protocol: for the SCMCCH special PDSCH, when the PDSCH adopts a PDSCH mapping type A, if the DMRS configuration type is not configured, the parameter is defaulted to be 0/1; when the PDSCH adopts PDSCH mapping type B, if the DMRS configuration type is not configured, the parameter is default to 0/1. When the parameter does not take a default value, the parameter may be configured in units of BWP and cell, respectively.
It is well defined in the 3GPP protocol: when "maxLength" is not configured, the default PDSCH employs a single symbol DMRS. When the PDSCH does not employ a single symbol DMRS, the parameters are configured in units of BWP and cell, respectively.
It is well defined in the 3GPP protocol: when "dmrs-additionplaces" is not configured, the default value of this parameter is 2, namely: the DMRS additional symbol number is 2. When the parameter does not take a default value, the parameter is configured in units of BWP and cell, respectively.
For PT-RS specific parameters:
configuration method 1 of PT-RS special parameters:
it is well defined in the 3GPP protocol: PT-RS is not configured for the SC-MCCH specific PDSCH. Under this specification, the SC-MCCH specific PDSCH does not require PT-RS specific parameters.
Configuration method 2 of PT-RS special parameters:
It is well defined in the 3GPP protocol: the default SC-MCCH specific PDSCH does not employ PT-RS when the parameter is not configured. When the SC-MCCH specific PDSCH employs the PT-RS, PT-RS specific parameters may be configured in units of BWP and cell, respectively. The PT-RS specific parameters include the following:
(1) timeDensity and frequencyDensity
When the PT-RS is configured for the SC-MCCH specific PDSCH, the two parameters are used for determining the time density LPT-RS and the frequency density KPT-RS respectively.
When only timeDensity is configured, the time density table of PT-RS is checked to determine L PT-RS And according to K PT-RS Mapping of the frequency domain is performed =2.
When only frequency density is configured, the frequency density table of PT-RS is checked to determine K PT-RS And according to L PT-RS Time domain mapping is performed for =1.
(2)resourceElementOffset
The parameter indicates subcarrier bias of PT-RS, and the value range is as follows: 00. 01, 10, 11. When the parameter is not configured, the parameter value is defaulted to 00.
(3)epre-Ratio
The parameter indicates the power ratio of PT-RS EPRE and PDSCH EPRS, and the value range is as follows: 0. 1, 2 and 3. If not, default the parameter to 0.
The PT-RS dedicated parameters may be configured in units of BWP and cell, respectively.
Among the above parameters, the parameters having two configuration methods include:
(1) PDSCH time domain resource allocation list
(2) Interleaving parameters: PRB bundle Length
(3) PDSCH resource allocation parameters: pdsch-Aggregation factor and resource allocation
(4) DMRS specific parameters: DMRS configuration type, maxLength and DMRS-addition position
(5) PT-RS special parameter
For any one of the above parameters, when the parameter adopts the configuration method 1, the parameter does not need to be notified to the UE; when the configuration method 2 is adopted for the item parameter, the item parameter may be configured in units of BWP and cell, respectively, and a corresponding parameter value needs to be notified to the UE.
Based on the analysis, for each uniformly configured SC-MCCH, determining a configuration mode of the PDSCH dedicated parameters, and executing corresponding configuration has two implementation modes. The method comprises the following steps:
mode one:
for each uniformly configured SC-MCCH, determining the configuration mode of the PDSCH special parameters, and executing the specific configuration method comprises the following steps: the following provision is made in the 3GPP protocol, and the configuration of PDSCH-specific parameters is achieved by the following provision. The PDSCH is a special PDSCH for the SC-MCCH. The specific prescription comprises the following steps:
(1) The PDSCH time domain resource allocation list does not need to be configured for the SC-MCCH specific PDSCH.
(2) The SC-MCCH specific PDSCH does not employ interlace mapping in the VRB to PRB mapping.
(3) PDSCH resource allocation parameter related provision:
(3-1) the number of repeated transmissions per TB PDSCH-aggregation factor=x, x=1 or 2 or 4 or 8 on the SC-MCCH dedicated PDSCH;
(3-2) SC-MCCH specific PDSCH adopts radio resource allocation type 1
(4) DMRS-specific parameter-related provision:
(4-1) for an SC-MCCH specific PDSCH, when the PDSCH adopts PDSCH mapping type a, the DMRS configuration type of the PDSCH is: configuration type 1 or configuration type 2; when the PDSCH adopts PDSCH mapping type B, the DMRS configuration type of the PDSCH is: configuration type 1 or configuration type 2;
(4-2) the SCC-MCCH special PDSCH adopts single-symbol DMRS/double-symbol DMRS;
(4-3) for the SC-MCCH dedicated PDSCH, dmrs-additional position is a fixed value. When PDSCH adopts PDSCH mapping type A and PDSCH adopts single symbol DMRS, the fixed value is 0/1/2/3; in other scenarios, the fixed value is 0/1.
(5) PT-RS is not configured for the SC-MCCH specific PDSCH.
Mode two:
for each uniformly configured SC-MCCH, determining the configuration mode of the PDSCH special parameters, and executing the specific configuration method comprises the following steps:
first, the following provisions are made in the 3GPP protocol:
(1) PDSCH time domain resource allocation lists may be configured for SC-MCCH specific PDSCH.
(2) When the interleaving parameters are not configured, the SC-MCCH specific PDSCH is not interleaved in the VRB to PRB mapping.
(3) PDSCH resource allocation parameter related provision:
when PDSCH-aggregation factor is not configured, the default SC-MCCH dedicated PDSCH repetition transmission number is X. X=1/2/4/8.
When the resource allocation is not configured, the default SC-MCCH dedicated PDSCH adopts the radio resource allocation type 1.
(4) DMRS-specific parameter-related provision:
for the SCMCCH special PDSCH, when the PDSCH adopts a PDSCH mapping type A, if the DMRS configuration type is not configured, the parameter is defaulted to be 0/1; when the PDSCH adopts PDSCH mapping type B, if the DMRS configuration type is not configured, the parameter is default to 0/1.
When "maxLength" is not configured, the default PDSCH employs a single symbol DMRS.
When "dmrs-additionplaces" is not configured, the default value of this parameter is 2.
(5) The default SC-MCCH specific PDSCH does not employ PT-RS when PT-RS specific parameters are not configured.
Then, based on the above-mentioned specification, parameters to be configured are determined, and a configuration unit of each parameter to be configured is determined, and the following corresponding configuration is performed:
under the above-mentioned regulations, when the sc_mcch dedicated PSCH adopts the PDSCH time domain resource allocation list, a configuration unit of the list is determined, and corresponding configuration is performed.
Under the above-mentioned regulations, when an interleaving mapping is used in the mapping from VRB to PRB, a configuration unit of interleaving parameters is determined and corresponding configuration is performed.
Under the above rule, when pdsch-aggregation factor is not the default value, the configuration unit of the parameter is determined, and the corresponding configuration is performed.
Under the above rule, when the resource allocation is not a default value, a configuration unit of the parameter is determined, and corresponding configuration is performed.
Under the above provisions, when the DMRS configuration type is not a default value, determining a configuration unit of the DMRS configuration type, and executing corresponding configuration.
Under the above definition, when "maxLength" is not a default value, a configuration unit of "maxLength" is determined, and the corresponding configuration is performed.
Under the above rule, when "dmrs-addition position" is not a default value, determining a configuration unit of "dmrs-addition position", and executing a corresponding configuration.
Under the above-mentioned regulations, when the PDSCH adopts the PT-RS, a configuration unit of PT-RS dedicated parameters is determined, and corresponding configuration is performed.
Specifically, when the SC-MCCH adopts a configuration mode, only one SC-MCCH is uniformly configured in each cell, and when it is determined that a parameter needs to be configured based on the above rule, the parameter can be configured only by taking a "cell" as a unit for the uniformly configured SC-MCCH, and the configuration value of the parameter and the parameter is recorded in a cell-level parameter list. For example, under the above-mentioned rule, when the sc_mcch dedicated PSCH adopts the PDSCH time domain resource allocation list, the uniformly configured SC-MCCH configures one PDSCH time domain resource allocation list in a cell unit, and records the name of the list and the list in the cell-level parameter list.
Specifically, when the SC-MCCH adopts the second configuration mode, one SC-MCCH is uniformly configured on each uniformly configured BWP, when it is determined that a parameter needs to be configured based on the above specification, a configuration unit of the parameter is determined, and then corresponding configuration is performed:
when the configuration unit of the corresponding parameter is 'BWP', the corresponding parameter is configured for each uniformly configured SC-MCCH independently, different SC-MCCHs may use different parameter values, and when the number of the uniformly configured SC-MCCHs is N, the name of the parameter and N parameter values configured for the N SC-MCCHs independently are recorded in the BWP-level parameter list, and each parameter value corresponds to one SC-MCCH.
When the configuration unit of the corresponding parameters is a cell, the corresponding parameters are uniformly configured for all uniformly configured SC-MCCHs, the same parameter value is adopted for each SC-MCCH, and the names and the numerical values of the corresponding parameters uniformly configured for all the uniformly configured SC-MCCHs are recorded in a cell-level parameter list.
For example: when determining that the PDSCH time domain resource allocation list is configured in BWP units, configuring the PDSCH time domain resource allocation list for each uniformly configured SC-MCCH respectively, recording the name of the list and the PDSCH time domain resource allocation list configured for each SC-MCCH in a BWP level parameter list, and recording the parameter names of 'PDSCH time domain resource allocation list' and N lists in the BWP level parameter list when the number of the uniformly configured SC-MCCHs is N, wherein each list corresponds to one SC-MCCH
For another example: when determining to configure the PDSCH time domain resource allocation list in a unit of a cell, uniformly configuring the list for all uniformly configured SC-MCCHs, wherein each SC-MCCH adopts the same list, and recording the parameter name of 'PDSCH time domain resource allocation list' and the uniformly configured list in a cell-level parameter list.
Step 103, determining the base station corresponding to each cell broadcasting the MBMS, generating base station dedicated SC-MCCH configuration information for each corresponding base station, and transmitting the information to the corresponding base station.
Specifically, the main execution body of this step is MCE. After the MCE performs the processing in steps 101 and 102, determining the base station corresponding to each cell broadcasting the MBMS, generating base station specific SC-MCCH configuration information for each corresponding base station, and transmitting the information to the corresponding base station, so that each corresponding base station broadcasts each uniformly configured SC-MCCH in the corresponding respective cell according to the received base station specific SC-MCCH configuration information, that is, performing steps 104 and 105 described below.
When the MCE adopts an SC-MCCH configuration mode, the MCE uniformly configures a unique SC-MCCH for each cell, and the SC-MCCH configuration information special for each corresponding base station generated by the MCE comprises the following contents:
(1) Configuration information of the SC-MCCH
1. Broadcasting configuration information of BWP of the SC-MCCH
2. Configuration information (if any) of broadcast parameters adopted by the SC-MCCH;
3. and broadcasting configuration information of CORESET and search space uniformly configured for PDCCH on BWP of the SC-MCCH, wherein the PDCCH is used for bearing dynamic scheduling information of the SC-MCCH.
4. Cell-level parameter list (when SC-MCCH special PDSCH adopts parameter configuration mode two and the cell-level parameter list is not empty)
(2) Cell ID list: and broadcasting a cell ID list of each cell of the SC-MCCH in the cell controlled by the current gNB.
When the MCE adopts the second SC-MCCH configuration mode, a unique SC-MCCH is uniformly configured for each uniformly configured BWP, and the base station specific SC-MCCH configuration information generated by the MCE for each corresponding base station is composed of the following information:
(1) The configuration information of each uniformly configured SC-MCCH, wherein the configuration information of any one uniformly configured SC-MCCH comprises:
1. broadcasting configuration information of BWP of the SC-MCCH
2. Configuration information (if any) of broadcast parameters employed by the SC-MCCH
3. And broadcasting configuration information of CORESET and search space uniformly configured for PDCCH on BWP of the SC-MCCH, wherein the PDCCH is used for bearing dynamic scheduling information of the SC-MCCH.
4. Cell-level parameter list (if not empty) and BWP-level parameter list (if not empty) (when the SC-MCCH dedicated PDSCH of the SC-MCCH adopts parameter configuration mode two)
(2) Cell ID list: broadcasting a cell ID list of each cell of each uniformly configured SC-MCCH in a cell controlled by a current gNB
Step 104, receiving the SC-MCCH configuration information special for the base station and storing.
Specifically, the main execution body of this step is the base station gNB. And the base station receives and stores the SC-MCCH configuration information which is sent by the MCE to the base station.
Step 105, broadcasting each uniformly configured SC-MCCH in each corresponding cell according to the base station specific SC-MCCH configuration information.
Specifically, the main execution body of this step is the base station gNB.
Specifically, for each uniformly configured SC-MCCH, when the configuration information of the SC-PTM on the SC-MCCH is not null, the gcb broadcasts the SC-MCCH and the PDCCH carrying the SC-MCCH dynamic scheduling information according to the configuration information of the SC-MCCH and the cell ID list in the configuration information of the SC-MCCH specific to the base station. Broadcasting the SC-MCCH and the PDCCH carrying the SC-MCCH dynamic scheduling information according to the SC-MCCH configuration information and the cell ID list of the SC-MCCH which are uniformly configured comprises:
(1) Determining each cell broadcasting the SC-MCCH according to a cell ID list in the configuration information of the SC-MCCH special for the base station, and broadcasting the SC-MCCH only in the cells;
(2) According to the configuration information of the SC-MCCH in the configuration information of the SC-MCCH special for the base station, the following information is determined:
1. determining the BWP broadcasting the SC-MCCH according to the configuration information of the BWP broadcasting the SC-MCCH;
2. and determining the broadcast parameters adopted by the SC-MCCH according to the configuration information (if any) of the broadcast parameters adopted by the SC-MCCH. When the parameter is not included, the base station can respectively determine the broadcast parameter of the SC-MCCH in each cell broadcasting the SC-MCCH, different cells can adopt different broadcast parameters to broadcast the SC-MCCH, the base station can also uniformly configure the broadcast parameter for the SC-MCCH, and the SC-MCCH adopts uniformly configured broadcast parameters to broadcast in each cell broadcasting the SC-MCCH;
3. and determining the CORESET and the search space corresponding to the PDCCH carrying the SC-MCCH dynamic scheduling information according to the configuration information of the CORESET and the search space which are uniformly configured for the PDCCH on the BWP broadcasting the SC-MCCH.
4. Determining parameters of the PDSCH special for the SC-MCCH according to a cell-level parameter list (if any);
5. determining parameters of the SCC-MCCH special PDSCH according to a BWP level parameter list (if any);
(3) In each cell broadcasting the SC-MCCH, the PDSCH dedicated for the SC-MCCH is broadcast using a corresponding BWP and a corresponding broadcast parameter.
More specifically, the gNB allocates time-frequency resources for the SC-MCCH specific PDSCH on the BWP broadcasting the SC-MCCH in each cell, which is transmitted on the corresponding BWP using the allocated time-frequency resources in the cell. The SC-MCCH specific PDSCH employs parameters configured for the PDSCH in the processing of the various steps experienced.
(4) In each cell broadcasting the SC-MCCH, on the corresponding BWP, CCE resources are allocated to the PDCCH carrying the SC-MCCH dynamic scheduling information in the corresponding search space on the corresponding CORESET, the PDCCH is broadcasted by using the allocated CCE resources, the CRC of the PDCCH is scrambled by the SC-RNTI, and the DCI format on the PDCCH is the dynamic scheduling information of the SC-MCCH specific PDSCH.
(5) In order for the UE to be able to receive each uniformly configured SC-MCCH in a corresponding cell, a corresponding SIB is transmitted on the BWP broadcasting the SC-MCCH in each cell broadcasting the SC-MCCH for broadcasting semi-static configuration information of the SC-MCCH to the UE. The semi-static configuration information of the SC-MCCH comprises:
1. Broadcasting configuration information of BWP of the SC-MCCH
2. And broadcasting configuration information of CORESET and search space uniformly configured for PDCCH on BWP of the SC-MCCH, wherein the PDCCH is used for bearing dynamic scheduling information of the SC-MCCH.
3. Cell-level parameter list (if not empty) and BWP-level parameter list (if not empty)
4. Configuration information and configuration modes of broadcast parameters adopted by the SC-MCCH: the configuration mode of the broadcast parameters is indicated by IE "Method", when the broadcast parameters of one SC-MCCH are determined by MCE, method=1, and when the broadcast parameters of one SC-MCCH are determined by gNB, method=0.
Step 106, when the user equipment UE moves from the source cell to the target cell, receiving the corresponding SC-MCCH in the target cell according to the semi-static configuration information of the corresponding uniformly configured SC-MCCH obtained in the source cell.
Specifically, for each uniformly configured SC-MCCH, when the MCE uniformly configures broadcast parameters for the uniformly configured SC-MCCH, the semi-static configuration information of the SC-MCCH in the source cell and the target cell is the same, so that the UE may receive the corresponding SC-MCCH in the target cell according to the semi-static configuration information of the SC-MCCH acquired in the source cell. Specifically, the UE monitors a PDCCH scrambled with an SC-RNTI for CRC on a PDCCH occasion indicated by a broadcast parameter on a corresponding search space on a corresponding CORESET on a corresponding BWP in a target cell according to semi-static configuration information of the SC-MCCH obtained in the source cell, and when the corresponding PDCCH is monitored, the UE obtains dynamic scheduling information of the corresponding SC-MCCH according to a DCI format on the PDCCH, and receives a corresponding SC-MCCH dedicated PDSCH according to the information. And obtaining the SC-PTM configuration information carried on the SC-MCCH from the PDSCH special for the SC-MCCH.
For each uniformly configured SC-MCCH, when the MCE does not uniformly configure broadcast parameters for the uniformly configured SC-MCCH, the UE applies configuration information other than configuration information and configuration modes of the broadcast parameters in the semi-static configuration information of the SC-MCCH obtained by the source cell to the target cell. The UE may receive the corresponding SC-MCCH in the target cell according to other pieces of configuration information in the semi-static configuration information of the SC-MCCH in the source cell. Specifically, a broadcast parameter of one SC-MCCH is used to determine a location range of PDCCH occasions to be monitored, and when the UE knows the parameter, the UE may monitor only a number of PDCCH occasions specified by the parameter among all PDCCH occasions included in the search space; when the UE does not know the parameter, the UE needs to listen to all PDCCH opportunities in the search space. And compared with the monitoring of all PDCCH opportunities, the power consumption of the UE side can be reduced by monitoring part PDCCH.
For each uniformly configured SC-MCCH, when the MCE does not uniformly configure the broadcast parameters for the SC-MCCH, in this embodiment, in order to receive the SC-MCCH in the target cell, while the UE listens to each PDCCH occasion in the target cell on the corresponding search space, the UE may receive the corresponding SIB in parallel, after obtaining the semi-static configuration information of the SC-MCCH on the corresponding SIB, the UE may stop listening to the PDCCH on each PDCCH occasion in the target cell, and may only listen to the corresponding PDCCH on a plurality of PDCCH occasions indicated by the broadcast parameters in the semi-static configuration information of the SC-MCCH. Thus, the time for monitoring all PDCCH opportunities in the target cell can be shortened, and the power consumption of the UE can be reduced.
According to the broadcasting method of the SC-MCCH, provided by the embodiment of the invention, the SC-MCCH of the single-cell multicast control channel is uniformly configured in each cell of the MBMS so as to shorten or eliminate the interruption of the UE when the target cell receives the corresponding SC-MCCH. Specifically, in the broadcast method of SC-MCCH provided by the embodiment of the present invention, SC-MCCH is uniformly configured in each cell. Whichever way is used to configure the SC-MCCHs uniformly, for any one uniformly configured SC-MCCH, the SC-MCCH is sent using the same BWP in different cells, the CRC of the PDCCH carrying the SC-MCCH dynamic scheduling information is scrambled with the SC-RNTI and sent using the same BWP, the same CORESET and the same search space in different cells. In the broadcast method of SC-MCCH provided in the embodiment of the present invention, when the UE moves from the source cell to the target cell, for each uniformly configured SC-MCCH, the UE directly receives the corresponding SC-MCCH in the target cell according to the semi-static configuration information of the SC-MCCH obtained in the source cell.
An embodiment of the present invention provides a multi-cell coordination entity MCE, and fig. 3 is a schematic structural diagram of the MCE provided by the present invention, as shown in fig. 3, where the MCE includes:
A configuration module 10, configured to uniformly configure a single-cell multicast control channel SC-MCCH for each cell of a broadcast multimedia broadcast multicast service MBMS; for each uniformly configured SC-MCCH, determining a configuration mode of a special parameter of a PDSCH and executing corresponding configuration, wherein the PDSCH is used for bearing the uniformly configured SC-MCCH; a sending module 20, configured to determine a base station corresponding to each cell broadcasting the MBMS, generate base station specific SC-MCCH configuration information for each corresponding base station, and transmit the base station specific SC-MCCH configuration information to a corresponding base station.
The multi-cell coordination entity provided by the embodiment of the present invention can implement the method of the above-mentioned illustrated embodiment, and its implementation principle and technical effects are similar, and will not be described herein.
An embodiment of the present invention provides a base station, and fig. 4 is a schematic structural diagram of the base station provided by the present invention, as shown in fig. 4, where the base station includes:
a receiving module 30, configured to receive and store base station specific SC-MCCH configuration information sent by a multi-cell coordination entity MCE; and a broadcasting module 40, configured to broadcast each uniformly configured SC-MCCH in each corresponding cell according to the base station specific SC-MCCH configuration information.
The base station provided by the embodiment of the present invention can implement the method of the above illustrated embodiment, and its implementation principle and technical effects are similar, and will not be described here again.
An embodiment of the present invention provides a ue, and fig. 5 is a schematic structural diagram of the ue provided by the present invention, as shown in fig. 5, where the ue includes:
a first processing module 50, configured to obtain semi-static configuration information of corresponding uniformly configured SC-MCCH in a source cell before a user equipment UE moves from the source cell to a target cell; and a second processing module 60, configured to receive, in the target cell, the corresponding SC-MCCH according to the semi-static configuration information of the uniformly configured SC-MCCH obtained in the source cell.
The user equipment provided by the embodiment of the present invention can implement the method of the above illustrated embodiment, and its implementation principle and technical effects are similar, and will not be described here again.
The invention provides a system for realizing a broadcasting method of a single-cell multicast control channel, which comprises a multi-cell coordination entity, a base station and user equipment, wherein the multi-cell coordination entity is used for receiving a broadcast signal of a single-cell multicast control channel; wherein the multi-cell coordination entity performs the method according to any of the first aspects; the base station performing the method of any of the second aspects; the user equipment performs the method according to any of the third aspects.
The system for implementing the broadcast method of the single-cell multicast control channel according to the embodiment of the present invention may implement the method of the above-described embodiment, and its implementation principle and technical effects are similar, and will not be described herein again.
An embodiment of the present invention provides a multi-cell coordination entity, and fig. 6 is a schematic hardware structure diagram of the multi-cell coordination entity provided by the present invention, where as shown in fig. 6, the multi-cell coordination entity includes:
at least one processor 601 and a memory 602.
In a specific implementation, at least one processor 601 executes computer-executable instructions stored in the memory 602, so that the at least one processor 601 performs the method according to any one of the first aspect above, where the processor 601 and the memory 602 are connected through a bus 603.
The specific implementation process of the processor 601 may refer to the above-mentioned method embodiment, and its implementation principle and technical effects are similar, and this embodiment will not be described herein again.
The present invention further provides a base station and a user equipment, the hardware structure of which is similar to that of fig. 6, and the implementation principle and technical effects of which are similar to those of the above method embodiment, and are not repeated herein.
In the embodiment shown in fig. 6, it should be understood that the processor may be a central processing unit (english: central Processing Unit, abbreviated as CPU), or may be other general purpose processors, digital signal processors (english: digital Signal Processor, abbreviated as DSP), application specific integrated circuits (english: application Specific Integrated Circuit, abbreviated as ASIC), or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in a processor for execution.
The memory may comprise high speed RAM memory or may further comprise non-volatile storage NVM, such as at least one disk memory.
The bus may be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external device interconnect (Peripheral Component Interconnect, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, the buses in the drawings of the present application are not limited to only one bus or to one type of bus.
The application also provides a readable storage medium arranged on the side of the multi-cell coordination entity, wherein the readable storage medium stores computer execution instructions which when executed by a processor, implement the method according to the first aspect.
The present application also provides another readable storage medium, provided at a base station side, in which computer-executable instructions are stored, which when executed by a processor, implement the method according to any one of the above second aspects.
The present application also provides a further readable storage medium, provided at a user equipment side, having stored therein computer-executable instructions which, when executed by a processor, implement a method as described in any of the above third aspects.
The above-described readable storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. A readable storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.
An exemplary readable storage medium is coupled to the processor such the processor can read information from, and write information to, the readable storage medium. In the alternative, the readable storage medium may be integral to the processor. The processor and the readable storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuits, ASIC for short). The processor and the readable storage medium may reside as discrete components in a device.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (11)

1. A broadcast method of SC-MCCH, applied to a multi-cell coordination entity MCE, the method comprising:
uniformly configuring a single-cell multicast control channel SC-MCCH for each cell of a broadcast multimedia broadcast multicast service MBMS;
for each uniformly configured SC-MCCH, determining a configuration mode of a special parameter of a PDSCH and executing corresponding configuration, wherein the PDSCH is used for bearing the uniformly configured SC-MCCH;
determining a base station corresponding to each cell broadcasting the MBMS, generating base station special SC-MCCH configuration information for each corresponding base station, and transmitting the base station special SC-MCCH configuration information to the corresponding base station;
The method for uniformly configuring the single-cell multicast control channel SC-MCCH for each cell of the broadcast multimedia broadcast multicast service MBMS comprises the following steps:
in each cell broadcasting MBMS, uniformly configuring an SC-MCCH;
or, in each cell broadcasting the MBMS, uniformly configuring a bandwidth fragmentation BWP for broadcasting the MBMS, and uniformly configuring one SC-MCCH on each uniformly configured BWP;
the unified configuration single-cell multicast control channel SC-MCCH comprises the following steps:
for each uniformly configured SC-MCCH, determining a BWP for transmitting the uniformly configured SC-MCCH, broadcasting the SC-MCCH on the BWP, uniformly configuring a control resource CORESET and a search space for a physical downlink control channel PDCCH on the BWP, wherein the PDCCH is used for carrying dynamic scheduling information of the uniformly configured SC-MCCH, a cyclic redundancy check CRC of the PDCCH is scrambled with a single cell-radio network temporary identity SC-RNTI, and the SC-RNTI is used for identifying the SC-MCCH on an air interface.
2. The method of claim 1, wherein the uniformly configuring the single-cell multicast control channel SC-MCCH further comprises:
and for each uniformly configured SC-MCCH, uniformly configuring broadcast parameters for the SC-MCCH, and broadcasting the SC-MCCH on the BWP according to the uniformly configured broadcast parameters.
3. The method of claim 1, wherein the base station specific SC-MCCH configuration information comprises: configuration information and a cell identification list of each uniformly configured SC-MCCH; the configuration information of each uniformly configured SC-MCCH includes: the configuration information of the BWP of the SC-MCCH, the configuration information of the broadcast parameters adopted by the SC-MCCH, the configuration information of CORESET and search space uniformly configured for the PDCCH on the BWP of the SC-MCCH, the cell-level parameter list and the BWP-level parameter list.
4. A broadcast method of SC-MCCH, applied to a base station, the method comprising:
receiving and storing the SC-MCCH configuration information special for the base station sent by a multi-cell coordination entity MCE;
broadcasting each uniformly configured SC-MCCH in each corresponding cell according to the base station dedicated SC-MCCH configuration information;
wherein, the base station dedicated SC-MCCH configuration information is generated by an MCE according to the following mode: uniformly configuring a single-cell multicast control channel SC-MCCH for each cell of a broadcast multimedia broadcast multicast service MBMS; for each uniformly configured SC-MCCH, determining a configuration mode of a special parameter of a PDSCH and executing corresponding configuration, wherein the PDSCH is used for bearing the uniformly configured SC-MCCH; determining a base station corresponding to each cell broadcasting the MBMS, and generating base station special SC-MCCH configuration information for each corresponding base station;
Before broadcasting each uniformly configured SC-MCCH in each corresponding cell according to the base station specific SC-MCCH configuration information, the method further includes:
judging whether SC-PTM configuration information carried by the uniformly configured SC-MCCH is empty or not;
if not, broadcasting the uniformly configured SC-MCCH in each corresponding cell according to the special SC-MCCH configuration information of the base station;
the base station dedicated SC-MCCH configuration information comprises: configuration information and a cell identification list of each uniformly configured SC-MCCH; the configuration information of any one of the uniformly configured SC-MCCH comprises: broadcasting configuration information of the BWP of the SC-MCCH, configuration information of broadcast parameters adopted by the SC-MCCH, configuration information of CORESET and search space uniformly configured for PDCCH on the BWP broadcasting the SC-MCCH, a cell-level parameter list and a BWP-level parameter list;
the broadcasting each uniformly configured SC-MCCH in each corresponding cell according to the base station specific SC-MCCH configuration information includes:
determining each cell broadcasting the SC-MCCH according to a cell identification list in the SC-MCCH configuration information special for the base station;
determining the BWP broadcasting the SC-MCCH according to the configuration information of the BWP broadcasting the SC-MCCH;
Determining the broadcast parameters adopted by the SC-MCCH according to the configuration information of the broadcast parameters adopted by the SC-MCCH;
according to configuration information of CORESET and search space which are uniformly configured for PDCCH on BWP broadcasting the SC-MCCH, determining CORESET and search space corresponding to PDCCH carrying the SC-MCCH dynamic scheduling information;
determining parameters of the SC-MCCH special PDSCH according to a cell-level parameter list and a BWP-level parameter list;
broadcasting the SCMCCH-specific PDSCH by adopting a corresponding BWP and corresponding broadcasting parameters in each cell broadcasting the SCMCCH, and allocating time-frequency resources for the SCMCCH-specific PDSCH on the BWP broadcasting the SCMCCH in each cell by a base station, wherein the SCMCCH-specific PDSCH is transmitted by adopting the allocated time-frequency resources on the corresponding BWP in the corresponding cell;
in each cell broadcasting an SC-MCCH, on a corresponding BWP, distributing CCE resources to PDCCH carrying the SC-MCCH dynamic scheduling information in a corresponding search space on a corresponding CORESET, wherein the PDCCH is broadcasted by adopting the distributed CCE resources, CRC of the PDCCH is scrambled by an SC-RNTI, and a DCI format on the PDCCH is the dynamic scheduling information of the special PDSCH of the SC-MCCH;
a corresponding SIB is transmitted on the BWP broadcasting the SC-MCCH in each cell broadcasting the SC-MCCH for broadcasting semi-static configuration information of the SC-MCCH to the user equipment UE.
5. A broadcast method of SC-MCCH, applied to user equipment UE, the method comprising:
before User Equipment (UE) moves from a source cell to a target cell, the UE obtains corresponding semi-static configuration information of a uniformly configured SC-MCCH in the source cell;
the UE receives corresponding SC-MCCH in a target cell according to the semi-static configuration information of the uniformly configured SC-MCCH obtained in a source cell;
the semi-static configuration information of the SC-MCCH comprises: configuration information of BWP of broadcast SC-MCCH, configuration information of CORESET and search space which are uniformly configured for PDCCH on the BWP of broadcast SC-MCCH, a cell-level parameter list and a BWP-level parameter list, configuration information and configuration mode of broadcast parameters adopted by the SC-MCCH;
the UE receives corresponding SC-MCCH in a target cell according to the semi-static configuration information of the uniformly configured SC-MCCH obtained in a source cell, and the method comprises the following steps:
the UE monitors PDCCH scrambled by SC-RNTI for CRC on PDCCH occasion indicated by broadcast parameters on corresponding search space on corresponding CORESET on corresponding BWP in a target cell according to the semi-static configuration information of the SC-MCCH obtained in a source cell;
when the corresponding PDCCH is monitored, the UE obtains the dynamic scheduling information of the corresponding SC-MCCH according to the DCI format on the PDCCH, and receives the corresponding special PDSCH of the SC-MCCH according to the dynamic scheduling information of the SC-MCCH.
6. The method of claim 5, wherein the semi-static configuration information of the SC-MCCH comprises: configuration information of BWP of the broadcast SC-MCCH, configuration information of CORESET and search space uniformly configured for PDCCH on BWP of the broadcast SC-MCCH, cell-level parameter list and BWP-level parameter list;
the receiving, in a target cell, the corresponding SC-MCCH according to the semi-static configuration information of the corresponding uniformly configured SC-MCCH obtained in the source cell, including:
the UE monitors PDCCH scrambled by SC-RNTI for CRC on all PDCCH occasions on corresponding search spaces on corresponding CORESET on corresponding BWP in a target cell according to the semi-static configuration information of the SC-MCCH obtained in a source cell; when the corresponding PDCCH is monitored, the UE obtains the dynamic scheduling information of the corresponding SC-MCCH according to the DCI format on the PDCCH, and receives the corresponding special PDSCH of the SC-MCCH according to the dynamic scheduling information of the SC-MCCH.
7. The method of claim 6, wherein the method further comprises:
the UE receives corresponding SIB in parallel while monitoring each PDCCH opportunity on a corresponding search space in a target cell;
after obtaining the semi-static configuration information of the SC-MCCH on the corresponding SIB, the UE stops monitoring the PDCCH on each PDCCH occasion in the target cell, and monitors the corresponding PDCCH only on the PDCCH occasion indicated by the broadcast parameter in the semi-static configuration information of the SC-MCCH.
8. A multi-cell coordination entity, comprising:
the configuration module is used for uniformly configuring a single-cell multicast control channel SC-MCCH for each cell of a broadcast multimedia broadcast multicast service MBMS; for each uniformly configured SC-MCCH, determining a configuration mode of a special parameter of a PDSCH and executing corresponding configuration, wherein the PDSCH is used for bearing the uniformly configured SC-MCCH;
a sending module, configured to determine a base station corresponding to each cell broadcasting an MBMS, generate base station specific SC-MCCH configuration information for each corresponding base station, and transmit the base station specific SC-MCCH configuration information to a corresponding base station;
the configuration module is specifically configured to uniformly configure one SC-MCCH in each cell broadcasting the MBMS; or, in each cell broadcasting the MBMS, uniformly configuring a bandwidth fragmentation BWP for broadcasting the MBMS, and uniformly configuring one SC-MCCH on each uniformly configured BWP;
the configuration module is specifically configured to determine, for each uniformly configured SC-MCCH, a BWP for transmitting the uniformly configured SC-MCCH, where the SC-MCCH is broadcasted on the BWP, and control resources CORESET and search space are uniformly configured on the BWP for a physical downlink control channel PDCCH, where the PDCCH is used to carry dynamic scheduling information of the uniformly configured SC-MCCH, and a cyclic redundancy check CRC of the PDCCH is scrambled with a single cell-radio network temporary identifier SC-RNTI, and the SC-RNTI is used to identify the SC-MCCH on an air interface.
9. A base station, comprising:
the receiving module is used for receiving and storing the base station special SC-MCCH configuration information sent by the multi-cell coordination entity MCE;
a broadcasting module, configured to broadcast each uniformly configured SC-MCCH in each corresponding cell according to the base station specific SC-MCCH configuration information;
wherein, the base station dedicated SC-MCCH configuration information is generated by an MCE according to the following mode: uniformly configuring a single-cell multicast control channel SC-MCCH for each cell of a broadcast multimedia broadcast multicast service MBMS; for each uniformly configured SC-MCCH, determining a configuration mode of a special parameter of a PDSCH and executing corresponding configuration, wherein the PDSCH is used for bearing the uniformly configured SC-MCCH; determining a base station corresponding to each cell broadcasting the MBMS, and generating base station special SC-MCCH configuration information for each corresponding base station;
the broadcasting module is specifically configured to determine whether SC-PTM configuration information carried by the uniformly configured SC-MCCH is empty; if not, broadcasting the uniformly configured SC-MCCH in each corresponding cell according to the special SC-MCCH configuration information of the base station;
the base station dedicated SC-MCCH configuration information comprises: configuration information and a cell identification list of each uniformly configured SC-MCCH; the configuration information of any one of the uniformly configured SC-MCCH comprises: broadcasting configuration information of the BWP of the SC-MCCH, configuration information of broadcast parameters adopted by the SC-MCCH, configuration information of CORESET and search space uniformly configured for PDCCH on the BWP broadcasting the SC-MCCH, a cell-level parameter list and a BWP-level parameter list;
The broadcasting module is specifically configured to determine each cell broadcasting the SC-MCCH according to a cell identifier list in the SC-MCCH configuration information dedicated to the base station; determining the BWP broadcasting the SC-MCCH according to the configuration information of the BWP broadcasting the SC-MCCH; determining the broadcast parameters adopted by the SC-MCCH according to the configuration information of the broadcast parameters adopted by the SC-MCCH; according to configuration information of CORESET and search space which are uniformly configured for PDCCH on BWP broadcasting the SC-MCCH, determining CORESET and search space corresponding to PDCCH carrying the SC-MCCH dynamic scheduling information; determining parameters of the SC-MCCH special PDSCH according to a cell-level parameter list and a BWP-level parameter list; broadcasting the SCMCCH-specific PDSCH by adopting a corresponding BWP and corresponding broadcasting parameters in each cell broadcasting the SCMCCH, and allocating time-frequency resources for the SCMCCH-specific PDSCH on the BWP broadcasting the SCMCCH in each cell by a base station, wherein the SCMCCH-specific PDSCH is transmitted by adopting the allocated time-frequency resources on the corresponding BWP in the corresponding cell; in each cell broadcasting an SC-MCCH, on a corresponding BWP, distributing CCE resources to PDCCH carrying the SC-MCCH dynamic scheduling information in a corresponding search space on a corresponding CORESET, wherein the PDCCH is broadcasted by adopting the distributed CCE resources, CRC of the PDCCH is scrambled by an SC-RNTI, and a DCI format on the PDCCH is the dynamic scheduling information of the special PDSCH of the SC-MCCH; a corresponding SIB is transmitted on the BWP broadcasting the SC-MCCH in each cell broadcasting the SC-MCCH for broadcasting semi-static configuration information of the SC-MCCH to the user equipment UE.
10. A user device, comprising:
the first processing module is used for acquiring semi-static configuration information of corresponding uniformly configured SC-MCCH in a source cell before User Equipment (UE) moves from the source cell to a target cell;
the second processing module is used for receiving corresponding SC-MCCH in the target cell according to the semi-static configuration information of the uniformly configured SC-MCCH obtained in the source cell;
the semi-static configuration information of the SC-MCCH comprises: configuration information of BWP of broadcast SC-MCCH, configuration information of CORESET and search space which are uniformly configured for PDCCH on the BWP of broadcast SC-MCCH, a cell-level parameter list and a BWP-level parameter list, configuration information and configuration mode of broadcast parameters adopted by the SC-MCCH;
the second processing module is specifically configured to monitor, in the target cell, a PDCCH scrambled with an SC-RNTI for CRC on a PDCCH occasion indicated by a broadcast parameter in a corresponding search space on a corresponding CORESET on a corresponding BWP according to the semi-static configuration information of the SC-MCCH obtained in the source cell; when the corresponding PDCCH is monitored, the UE obtains the dynamic scheduling information of the corresponding SC-MCCH according to the DCI format on the PDCCH, and receives the corresponding special PDSCH of the SC-MCCH according to the dynamic scheduling information of the SC-MCCH.
11. A broadcast system of a single-cell multicast control channel, which is characterized by comprising a multi-cell coordination entity, a base station and user equipment;
wherein the multi-cell coordination entity performs the method of any of claims 1-3;
the base station performing the method of claim 4;
the user equipment performs the method of any of claims 5-7.
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