Information communication method, information receiving method, information setting method, information transmitting method, resource setting method, and apparatus

Abstract

To provide an information receiving method for a terminal to quickly acquire MCCH correction information, a method, and an apparatus.SOLUTION: An information communication method applied to a network side includes: a step of transmitting, to a terminal, first downlink control information DCI scrambled with a first radio network temporary identifier RNTI, wherein the first DCI is used to indicate whether control information of one multicast service and / or broadcast service is updated or indicate update related information; or a step of transmitting, to the terminal, second DCI scrambled with a second RNTI, wherein the second DCI is used to indicate whether control information of one multicast service and / or broadcast service is updated or indicate update related information. The control information includes setting information of the multicast service and / or broadcast service.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application is based on and claims priority from a Chinese patent application with application number 202010785850.2, filed on August 6, 2020, the entire contents of which are hereby incorporated by reference into this application. The present application relates to the technical field of wireless communication, and in particular to an information communication method, an information receiving method, an information setting method, an information transmitting method, a resource setting method, and a device. [Background technology]

[0002] A related art requirement is to specify basic functions of a Radio Access Network (RAN) for broadcast / multicast to a terminal in a connected state (RRC CONNECTED).

[0003] As shown in Figure 1, in the prior art, the Single Cell Multicast Control Channel (SC-MCCH) modification method periodically transmits the entire MCCH information based on a "repetition period." The "modification period" is defined as an integer multiple of the "repetition period." After receiving an MCCH update notification in the nth modification period, the terminal (UE) waits for the next modification period to read the changes to the MCCH information. This method of updating SC-MCCH information by notifying the period and modification period (tens of milliseconds) through higher layer RRC signaling is time-consuming, and the terminal is slow to acquire the MCCH modification information. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of this, the embodiments of the present disclosure provide an information communication method, an information reception method, an information configuration method, an information transmission method, a resource configuration method, and devices to solve the problem that the current method of updating SC-MCCH information by notifying the periodicity and modification periodicity through higher layer RRC signaling is time-consuming and the terminal is slow to obtain MCCH modification information. [Means for solving the problem]

[0005] In order to solve the above technical problems, in a first aspect, an embodiment of the present disclosure provides an information communication method applied to a network side device, the information communication method comprising: transmitting a first DCI scrambled with a first RNTI to a terminal, the first DCI being used to indicate whether control information of one multicast and / or broadcast service has been updated or to indicate update-related information; or transmitting a second DCI scrambled with a second RNTI to a terminal, the second DCI being used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0006] Preferably, the setting information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0007] Preferably, the first DCI comprises: that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed. Preferably, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI further comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0008] Preferably, the first DCI comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0009] Preferably, said set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in one cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0010] Preferably, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0011] Preferably, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI further comprises: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0012] Preferably, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; turning on or off CSI feedback for the multicast and / or broadcast service set; and the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services.

[0013] Preferably, after transmitting the first DCI scrambled with the first RNTI to the terminal, The first DCI includes information for indicating that control information of a multicast service and / or a broadcast service has changed, and / or When the control information of the multicast service and / or broadcast service is accompanied by resources of change information, the method includes a step of transmitting change information of the control information of the multicast service and / or broadcast service.

[0014] Preferably, the method further comprises: - broadcasting control information for each multicast and / or broadcast service of a plurality of multicast and / or broadcast services; or broadcasting control information of a first multicast service and / or broadcast service among control information of a plurality of multicast services and / or broadcast services, wherein control information of other multicast services and / or broadcast services among the control information of the plurality of multicast services and / or broadcast services is the same as the control information of the first multicast service and / or broadcast service; The control information includes at least one of a repetition period, an offset amount, a starting subframe, and a modification period.

[0015] An embodiment of the present disclosure further provides an information communication method applied to a terminal, the information communication method comprising: receiving a first DCI scrambled with a first RNTI transmitted from a network side device, the first DCI being used to indicate whether control information of one multicast service and / or broadcast service has been updated or to indicate update-related information; or receiving a second DCI scrambled with a second RNTI transmitted from a network side device, the second DCI being used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0016] Preferably, the setting information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0017] Preferably, the first DCI comprises: that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed. Preferably, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI further comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0018] Preferably, the first DCI comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0019] Preferably, said set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in one cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0020] Preferably, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0021] Preferably, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI further comprises: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0022] Preferably, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; turning on or off CSI feedback for the multicast and / or broadcast service set; and the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services.

[0023] Preferably, after receiving the first DCI scrambled with the first RNTI transmitted from the network side device, The first DCI includes information for indicating that control information of a multicast service and / or a broadcast service has changed, and / or When the control information of the multicast service and / or broadcast service is accompanied by resource change information, the method includes receiving change information of the control information of the multicast service and / or broadcast service.

[0024] An embodiment of the present disclosure further provides an information setting method applied to a network side device, the information setting method comprising: configuring a set of multicast and / or broadcast service control information for m multicast and / or broadcast services; a cell in which the m multicast and / or broadcast services are located has n multicast and / or broadcast services within a multicast and / or broadcast area; The n multicast services and / or broadcast services are configured with a total of k sets of multicast service and / or broadcast service control information, m, n, and k are natural numbers of 1 or more, m is equal to or less than n, and k is equal to or less than n.

[0025] Preferably, the method further comprises: setting at least one of a repetition period, a modification period, and a starting offset for each transmission of control information for the k sets of multicast and / or broadcast services; The repeat periods of the control information of the k sets of multicast and / or broadcast services may be the same or different in at least one of modification period and starting offset.

[0026] Preferably, the method further comprises: The method includes transmitting control information of n multicast and / or broadcast services to a terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0027] Preferably, before transmitting the control information of the n multicast and / or broadcast services to the terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, the method further comprises: The method includes a transmitting step of transmitting first information to a terminal, wherein the first information is used to indicate a first transmission time, and the first transmission time is a transmission time within a corresponding time domain unit of control information of the n multicast and / or broadcast services.

[0028] Preferably, the first information is: information for indicating a start time of the first transmission period; information indicating a duration of the first transmission time; and information for indicating a first offset amount, the first offset amount being an offset amount between the first transmission time and a position of the RMSI of an SSB.

[0029] An embodiment of the present disclosure further provides an information receiving method applied to a terminal, the information receiving method comprising: determining monitoring occasions of a Physical Downlink Control Channel (PDCCH) for one or more multicast messages and receiving multicast information at the monitoring occasions of the Physical Downlink Control Channel (PDCCH) for the multicast messages; One multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in the PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is DCI for scheduling multicast services by the network; DCI for scheduling multicast service configuration information by the network; DCI for information on the control channel of the multicast service, DCI for scheduling information on a control channel for multicast services by the network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of the control channel of the multicast service by the network; DCI of the control channel modification information of the multicast service, and DCI of scheduling information of modification information of control channel of multicast service.

[0030] Preferably, determining a monitoring occasion of a physical downlink control channel (PDCCH) for the one or more multicast messages comprises: Determining a PDCCH monitoring occasion for the multicast message based on a search space for the multicast message or a search space set for the multicast message; The search space for multicast messages is defined as A method in which a UE reads information of an Nth type PDCCH common search space set for setting a search space of a multicast message from a PDCCH common configuration configured by a network using an RRC message, the common search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; A method in which a UE reads a search space having an identifier of a common type from a PDCCH dedicated configuration configured by an RRC message, the search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; If the UE does not find the information of the Nth PDCCH common search space set for the multicast message search space configuration by the RRC message, the correlation between the PDCCH monitoring occasion and the SSB block index for the Nth PDCCH common search space set is the same as the correlation between the PDCCH monitoring occasion and the PDCCH common search space of type 0; determining by at least one of the following methods: finding the CCE aggregation levels in the common search space set of the Nth type PDCCH and the number of PDCCH candidates for each CCE aggregation level by table lookup; Information on a common search space set of the Nth type PDCCH and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for monitoring an occasion of a PDCCH for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring the PDCCH for multicast messages; Fourth indication information indicating monitoring time slots and / or monitoring time symbols used for monitoring occasions of the PDCCH of the multicast message in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for monitoring the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH of the multicast message; and and seventh indication information used to indicate the index of the control resource set associated with this search space. Preferably, one or more PDCCH monitoring occasions for a multicast message constitute one multicast message occasion.

[0031] Preferably, the method further comprises: The method includes determining a multicast scheduling radio frame (MF), where the MF is a system frame that includes one or more MOs or the origin of the MOs. Preferably, the method comprises: The method includes selecting one or more beams for receiving multicast scheduling information.

[0032] Preferably, one multicast message occasion is a PDCCH monitoring occasion for Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell. Preferably, the occasion of one multicast message is a PDCCH monitoring occasion of one group of multicast messages; The Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer. An embodiment of the present disclosure provides an information transmission method applied to a network side device, the information transmission method comprising: transmitting multicast information in monitoring occasions of a Physical Downlink Control Channel (PDCCH) of one or more multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in the PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is DCI for scheduling multicast services by the network; DCI for scheduling multicast service configuration information by the network; DCI for information on the control channel of the multicast service, DCI for scheduling information on a control channel for multicast services by the network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of the control channel of the multicast service by the network; DCI of the control channel modification information of the multicast service, and DCI of scheduling information of modification information of control channel of multicast service.

[0033] Preferably, the step of transmitting multicast information in monitoring occasions of a physical downlink control channel (PDCCH) of one or more multicast messages comprises: Associating the PDCCH monitoring occasion of the multicast message with a corresponding multicast message search space or a multicast message search space set; The search space for multicast messages is defined as A method for configuring a common search space set of an Nth type PDCCH for configuring a search space of a multicast message in a PDCCH common configuration configured by a radio resource control (RRC) message, wherein the common search space is used for a DCI format scrambled by a cyclic redundancy check code (CRC) by a multicast-RNTI in a primary cell; and a method for configuring by using at least one of the following: a method for configuring an identifier in a PDCCH dedicated configuration configured by an RRC message as a common type search space, wherein the search space is used for a DCI format in which CRC is scrambled by a multicast-RNTI in a primary cell; Information on a common search space set of the Nth type PDCCH and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for monitoring an occasion of a PDCCH for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring the PDCCH for multicast messages; Fourth indication information indicating monitoring time slots and / or monitoring time symbols used for monitoring occasions of the PDCCH of the multicast message in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for monitoring the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH of the multicast message; and and seventh indication information used to indicate the index of the control resource set associated with this search space.

[0034] Preferably, one or more PDCCH monitoring occasions for a multicast message constitute one multicast message occasion.

[0035] Preferably, further The method includes determining a multicast scheduling radio frame, where MF is a system frame including one or more MOs or origins of MOs.

[0036] Preferably, further The method includes selecting one or more beams for transmitting multicast scheduling information.

[0037] Preferably, one multicast message occasion is a PDCCH monitoring occasion for Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell.

[0038] Preferably, the occasion of one multicast message is a PDCCH monitoring occasion of one group of multicast messages; The Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer. An embodiment of the present disclosure provides an information transmission method applied to a network side device, the information transmission method comprising: The method includes transmitting control information of n multicast and / or broadcast services to a terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0039] Preferably, before transmitting the control information of the n multicast and / or broadcast services to the terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, the method further comprises: The method includes a transmitting step of transmitting first information to a terminal, wherein the first information is used to indicate a first transmission time, and the first transmission time is a transmission time within a corresponding time domain unit of control information of the n multicast services and / or broadcast services.

[0040] Preferably, the first information is: information for indicating a start time of the first transmission period; information indicating a duration of the first transmission time; and information for indicating a first offset amount, the first offset amount being an offset amount between the first transmission time and a position of the RMSI of an SSB.

[0041] An embodiment of the present disclosure further provides an information receiving method applied to a terminal, the information receiving method comprising: The method includes receiving, from a network side device, control information of n multicast and / or broadcast services transmitted every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0042] Preferably, receiving, from the network side device, control information of n multicast services and / or broadcast services transmitted every t time domain units within a repetition period of the control information of the multicast services and / or broadcast services includes: obtaining, within the repetition period, time domain units corresponding to control information of multicast and / or broadcast services; monitoring the time domain unit for control information of a corresponding multicast service and / or broadcast service.

[0043] Preferably, the time domain unit comprises: SFN mod sc-mcch-RepetitionPeriod=sc-mcch-Offset+(sc-mcch-Repetition Period)

number

[0044] Preferably, receiving, from the network side device, control information of n multicast services and / or broadcast services transmitted every t time domain units within a repetition period of the control information of the multicast services and / or broadcast services includes: receiving first information transmitted from the network side device; and receiving control information for n multicast and / or broadcast services at a second transmission time, wherein the first information is used to indicate the second transmission time, and the second transmission time is a transmission time within a corresponding time domain unit of the control information for the n multicast and / or broadcast services.

[0045] Preferably, the first information is: information for indicating a start time of the second transmission period; information indicating a duration of the second transmission period; and information for indicating a first offset amount, the first offset amount being an offset amount between the second transmission time and a position of the RMSI of an SSB.

[0046] An embodiment of the present disclosure further provides a resource configuration method applied to a network side device, the resource configuration method comprising: transmitting configuration information to a terminal, the configuration information being used to indicate first symbol information and / or second symbol information in one time slot, the first symbol being a symbol for transmitting unicast information, and the second symbol being a symbol for transmitting multicast information and / or broadcast information; the first symbol information is the number of time symbols and / or the number of PRBs occupied by the first symbol; The second symbol information is the number of time symbols and / or the number of PRBs occupied by the second symbol.

[0047] Preferably, the configuration information is further used to indicate that one column of reference signals has been inserted every y symbols in the time slot, and / or the configuration information is further used to indicate that one reference signal has been inserted every x subcarriers in the frequency domain corresponding to the time slot, and the reference signals are reference signals used for multicast and / or broadcast.

[0048] Preferably, the reference signal may be an SSB or a set of SSBs of a cell, or may be an SSB or a set of SSBs shared by a multicast and / or broadcast area, and / or Preferably, the reference signal may be a unified CSI-RS or a set of CSI-RS provided to terminals in one multicast and / or broadcast group, or may be a shared CSI-RS or a set of CSI-RS in one multicast and / or broadcast area.

[0049] Preferably, information of said reference signal needs to be exchanged between different network nodes. the x and the y are positive integers, the x is determined based on a subcarrier spacing, and the y is determined based on a subcarrier spacing; the unicast information includes at least one of a reference signal, a control signal, and data corresponding to the unicast; the multicast information includes at least one of a reference signal, a control signal, and data corresponding to the multicast; The broadcast information includes at least one of a reference signal, control signaling, and data corresponding to the broadcast.

[0050] Preferably, the x and y are positive integers, the x is determined based on the subcarrier spacing, and the y is further determined based on measurement accuracy.

[0051] An embodiment of the present disclosure further provides a resource configuration method applied to a terminal, the resource configuration method comprising: The method includes a step of receiving configuration information transmitted from a network side device, the configuration information being used to indicate first symbol information and / or second symbol information in one time slot, the first symbol being a symbol for transmitting unicast information, and the second symbol being a symbol for transmitting multicast information and / or broadcast information.

[0052] Preferably, the configuration information is further used to indicate that one column of reference signals has been inserted every y symbols in the time slot, and / or the configuration information is further used to indicate that one reference signal has been inserted every x subcarriers in the frequency domain corresponding to the time slot, and the reference signals are reference signals used for multicast and / or broadcast.

[0053] Preferably, the reference signal may be an SSB or a set of SSBs of a cell, or may be an SSB or a set of SSBs shared by a multicast and / or broadcast area, and / or Preferably, the reference signal may be a unified CSI-RS or a set of CSI-RS provided to terminals in one multicast and / or broadcast group, or may be a shared CSI-RS or a set of CSI-RS in one multicast and / or broadcast area.

[0054] Preferably, information of said reference signal needs to be exchanged between different network nodes; the x and the y are positive integers, the x is determined based on a subcarrier spacing, and the y is determined based on a subcarrier spacing; the unicast information includes at least one of a reference signal, a control signal, and data corresponding to the unicast; the multicast information includes at least one of a reference signal, a control signal, and data corresponding to the multicast; The broadcast information includes at least one of a reference signal, control signaling, and data corresponding to the broadcast.

[0055] Preferably, the x and y are positive integers, the x is determined based on the subcarrier spacing, and the y is further determined based on measurement accuracy.

[0056] An embodiment of the present disclosure further provides an information measurement method applied to a terminal, the information measurement method comprising: receiving resource configuration information transmitted from a network side device, the resource configuration information being resource configuration information for a multicast service and / or a broadcast service of a neighboring cell; and The method includes measuring or not measuring the resource corresponding to the resource setting information.

[0057] Preferably, the step of measuring or not measuring a resource corresponding to the resource setting information includes: If the terminal only has a unicast service, not measuring the resource corresponding to the resource configuration information; If the terminal only has a multicast service and / or a broadcast service, measuring resources corresponding to the resource configuration information; or When the terminal has both a unicast service and a multicast service and / or a broadcast service, measuring resources corresponding to the resource configuration information.

[0058] An embodiment of the present disclosure provides a network side device, the network side device comprising: a first DCI transmission module configured to transmit a first DCI scrambled with a first RNTI to a terminal, the first DCI being used to indicate whether control information of one multicast service and / or broadcast service has been updated or to indicate update-related information; or a second DCI transmission module configured to transmit a second DCI scrambled with a second RNTI to a terminal, the second DCI being used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0059] Preferably, the setting information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0060] Preferably, the first DCI comprises: that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed.

[0061] Preferably, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI further comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0062] Preferably, the first DCI comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0063] Preferably, said set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in one cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0064] Preferably, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0065] Preferably, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI further comprises: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0066] Preferably, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; turning on or off CSI feedback for the multicast and / or broadcast service set; and the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services.

[0067] Preferably, the network side device further comprises: the first DCI includes information for indicating that control information of a multicast service and / or a broadcast service has changed; and / or The change information transmitting module is configured to transmit change information of the control information of the multicast service and / or broadcast service when the control information of the multicast service and / or broadcast service is accompanied by resources of change information.

[0068] Preferably, the network side device further comprises: a first broadcast module configured to broadcast control information for each multicast and / or broadcast service of the plurality of multicast and / or broadcast services; or a second broadcast module configured to broadcast control information of a first multicast service and / or broadcast service among control information of a plurality of multicast services and / or broadcast services, wherein control information of other multicast services and / or broadcast services among the control information of the plurality of multicast services and / or broadcast services is the same as the control information of the first multicast service and / or broadcast service; The control information includes at least one of a repetition period, an offset amount, a starting subframe, and a modification period.

[0069] An embodiment of the present disclosure provides a terminal, the terminal comprising: a first DCI receiving module configured to receive a first DCI scrambled with a first RNTI transmitted from a network side device, the first DCI being used to indicate whether control information of one multicast service and / or broadcast service has been updated or to indicate update-related information; or a second DCI receiving module configured to receive a second DCI scrambled with a second RNTI transmitted from a network side device, the second DCI being used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0070] Preferably, the setting information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0071] Preferably, the first DCI comprises: that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed.

[0072] Preferably, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI further comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0073] Preferably, the first DCI comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0074] Preferably, said set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in one cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0075] Preferably, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0076] Preferably, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI further comprises: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0077] Preferably, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; turning on or off CSI feedback for the multicast and / or broadcast service set; and the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services.

[0078] Preferably, the terminal further comprises: The first DCI includes information for indicating that control information of a multicast service and / or a broadcast service is changed and / or received; and / or The change information receiving module is configured to receive change information of the control information of the multicast service and / or broadcast service when the control information of the multicast service and / or broadcast service is accompanied by a resource of change information.

[0079] An embodiment of the present disclosure provides a network side device, the network side device comprising: a control information setting module configured to set control information of a set of multicast services and / or broadcast services for the m multicast services and / or broadcast services; a cell in which the m multicast and / or broadcast services are located has n multicast and / or broadcast services within a multicast and / or broadcast area; The n multicast services and / or broadcast services are configured with a total of k sets of multicast service and / or broadcast service control information, m, n, and k are natural numbers of 1 or more, m is equal to or less than n, and k is equal to or less than n.

[0080] Preferably, the network side device further comprises: a setting module configured to set at least one of a repetition period, a modification period, and a starting offset for each transmission of control information of the k sets of multicast and / or broadcast services; The repeat periods of the control information of the k sets of multicast and / or broadcast services may be the same or different in at least one of modification period and starting offset.

[0081] Preferably, the network side device further comprises: and a control information transmitting module configured to transmit control information of n multicast and / or broadcast services to a terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0082] Preferably, the network side device further comprises: and a first information transmitting module configured to transmit first information to a terminal, the first information being used to indicate first transmission times, the first transmission times being transmission times within corresponding time domain units of control information of the n multicast and / or broadcast services.

[0083] Preferably, the first information is: information for indicating a start time of the first transmission period; information indicating a duration of the first transmission time; and information for indicating a first offset amount, the first offset amount being an offset amount between the first transmission time and a position of the RMSI of an SSB.

[0084] An embodiment of the present disclosure further provides a terminal, the terminal comprising: a reception occasion determination module configured to determine a monitoring occasion of a physical downlink control channel (PDCCH) for one or more multicast messages; and an information receiving module configured to receive multicast information at a monitoring occasion of a physical downlink control channel (PDCCH) for a multicast message; One multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in the PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is DCI for scheduling multicast services by the network; DCI for scheduling multicast service configuration information by the network; DCI for information on the control channel of the multicast service, DCI for scheduling information on a control channel for multicast services by the network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of the control channel of the multicast service by the network; DCI of the control channel modification information of the multicast service, and DCI of scheduling information of modification information of control channel of multicast service.

[0085] Preferably, the receiving occasion determination module is configured to determine a monitoring occasion of a PDCCH of a multicast message based on a search space of the multicast message or a search space set of the multicast message; The search space for multicast messages is A method in which a UE reads information of an Nth type PDCCH common search space set for setting a search space of a multicast message from a PDCCH common configuration configured by a network using an RRC message, the common search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; A method in which a UE reads a search space having an identifier of a common type from a PDCCH dedicated configuration configured by an RRC message, the search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; If the UE does not find the information of the Nth PDCCH common search space set for the multicast message search space configuration by the RRC message, the correlation between the PDCCH monitoring occasion and the SSB block index for the Nth PDCCH common search space set is the same as the correlation between the PDCCH monitoring occasion and the PDCCH common search space of type 0; by table lookup, determining the number of CCE aggregation levels and PDCCH candidates for each CCE aggregation level in the common search space set of the Nth type PDCCH; Information on a common search space set of the Nth type PDCCH and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for monitoring an occasion of a PDCCH for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring the PDCCH for multicast messages; Fourth indication information indicating monitoring time slots and / or monitoring time symbols used for monitoring occasions of the PDCCH of the multicast message in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for monitoring the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH of the multicast message; and and seventh indication information used to indicate the index of the control resource set associated with this search space.

[0086] Preferably, one or more PDCCH monitoring occasions for a multicast message constitute one multicast message occasion.

[0087] Preferably, further The radio frame determination module is configured to determine a multicast scheduling radio frame, where the MF is a system frame including one or more MOs or origins of MOs.

[0088] Preferably, further A beam selection module configured to select one or more beams for receiving multicast scheduling information is included.

[0089] Preferably, one multicast message occasion is a PDCCH monitoring occasion for Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell.

[0090] Preferably, the occasion of one multicast message is a PDCCH monitoring occasion of one group of multicast messages; The Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer.

[0091] An embodiment of the present disclosure provides a network side device, the network side device comprising: a multicast information transmitting module configured to transmit multicast information in monitoring occasions of a physical downlink control channel (PDCCH) for one or more multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in the PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is DCI for scheduling multicast services by the network; DCI for scheduling multicast service configuration information by the network; DCI for information on the control channel of the multicast service, DCI for scheduling information on a control channel for multicast services by the network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of the control channel of the multicast service by the network; DCI of the control channel modification information of the multicast service, and DCI of scheduling information of modification information of control channel of multicast service.

[0092] Preferably, the multicast information transmitting module comprises: Associating the PDCCH monitoring occasion of the multicast message with a corresponding multicast message search space or a multicast message search space set; The search space for multicast messages is defined as A method for configuring a common search space set of an Nth type PDCCH for configuring a search space of a multicast message in a PDCCH common configuration configured by a radio resource control (RRC) message, wherein the common search space is used for a DCI format scrambled by a cyclic redundancy check code (CRC) by a multicast-RNTI in a primary cell; and a method of configuring by at least one of the following: a method of configuring by using an identifier in a PDCCH dedicated configuration configured by an RRC message as a common type search space, wherein the search space is used for a DCI format in which CRC is scrambled by a multicast-RNTI in a primary cell; Information on a common search space set of PDCCH of type N and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for monitoring an occasion of a PDCCH for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring the PDCCH for multicast messages; Fourth indication information indicating monitoring time slots and / or monitoring time symbols used for monitoring occasions of the PDCCH of the multicast message in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for monitoring the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH of the multicast message; and and seventh indication information used to indicate the index of the control resource set associated with this search space.

[0093] Preferably, one or more PDCCH monitoring occasions for a multicast message constitute one multicast message occasion.

[0094] Preferably, further The system includes a multicast scheduling radio frame determination module configured to determine a multicast scheduling radio frame, where the MF is a system frame including one or more MOs or origins of MOs.

[0095] Preferably, further A beam selection module configured to select one or more beams for transmitting multicast scheduling information is included. Preferably, one multicast message occasion is a PDCCH monitoring occasion for Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell.

[0096] Preferably, the occasion of one multicast message is a PDCCH monitoring occasion of one group of multicast messages; The Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer.

[0097] An embodiment of the present disclosure provides a network side device, the network side device comprising: and a control information transmitting module configured to transmit control information of n multicast and / or broadcast services to a terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0098] Preferably, the network side device further comprises: and a first information transmitting module configured to transmit first information to a terminal, the first information being used to indicate first transmission times, the first transmission times being transmission times within corresponding time domain units of control information of the n multicast and / or broadcast services.

[0099] Preferably, the first information is: information for indicating a start time of the first transmission period; information indicating a duration of the first transmission time; and information for indicating a first offset amount, the first offset amount being an offset amount between the first transmission time and a position of the RMSI of an SSB.

[0100] An embodiment of the present disclosure provides a terminal, the terminal comprising: The control information receiving module is configured to receive, from a network side device, control information of n multicast and / or broadcast services transmitted every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0101] Preferably, the control information receiving module is configured to obtain time domain units corresponding to control information of multicast services and / or broadcast services in the recurrence period, and monitor the time domain units for the control information of the corresponding multicast services and / or broadcast services.

[0102] Preferably, the time domain unit comprises: SFN mod sc-mcch-RepetitionPeriod=sc-mcch-Offset+(sc-mcch-Repetition Period)

number

[0103] Preferably, the control information receiving module receives first information transmitted from the network side device; The first information is configured to receive control information of n multicast and / or broadcast services at a second transmission time, the first information being used to indicate the second transmission time, and the second transmission time being a transmission time within a corresponding time domain unit of the control information of the n multicast and / or broadcast services.

[0104] Preferably, the first information is: information for indicating a start time of the second transmission period; information indicating a duration of the second transmission period; and information for indicating a first offset amount, the first offset amount being an offset amount between the second transmission time and a position of the RMSI of an SSB.

[0105] An embodiment of the present disclosure provides a network side device, the network side device comprising: a configuration information transmitting module configured to transmit configuration information to a terminal, the configuration information being used to indicate first symbol information and / or second symbol information in one time slot, the first symbol being a symbol for transmitting unicast information, and the second symbol being a symbol for transmitting multicast information and / or broadcast information; the first symbol information is the number of time symbols and / or the number of PRBs occupied by the first symbol; The second symbol information is the number of time symbols and / or the number of PRBs occupied by the second symbol.

[0106] Preferably, the configuration information is further used to indicate that one column of reference signals has been inserted every y symbols in the time slot, and / or the configuration information is further used to indicate that one reference signal has been inserted every x subcarriers in the frequency domain corresponding to the time slot, and the reference signals are reference signals used for multicast and / or broadcast.

[0107] Preferably, the reference signal may be an SSB or a set of SSBs of a cell, or may be an SSB or a set of SSBs shared by a multicast and / or broadcast area, and / or Preferably, the reference signal may be a unified CSI-RS or a set of CSI-RS provided to terminals in one multicast and / or broadcast group, or may be a shared CSI-RS or a set of CSI-RS in one multicast and / or broadcast area.

[0108] Preferably, there is a need to exchange information about said reference signals between different network nodes; the x and the y are positive integers, the x is determined based on a subcarrier spacing, and the y is determined based on a subcarrier spacing; the unicast information includes at least one of a reference signal, a control signal, and data corresponding to the unicast; the multicast information includes at least one of a reference signal, a control signal, and data corresponding to the multicast; The broadcast information includes at least one of a reference signal, control signaling, and data corresponding to the broadcast.

[0109] Preferably, the x and y are positive integers, the x is determined based on the subcarrier spacing, and the y is further determined based on measurement accuracy.

[0110] An embodiment of the present disclosure further provides a terminal, the terminal comprising: a setting information receiving module configured to receive setting information transmitted from a network side device, the setting information being used to indicate first symbol information and / or second symbol information in one time slot, the first symbol being a symbol for transmitting unicast information, and the second symbol being a symbol for transmitting multicast information and / or broadcast information; the first symbol information is the number of time symbols and / or the number of PRBs occupied by the first symbol; The second symbol information is the number of time symbols and / or the number of PRBs occupied by the second symbol.

[0111] Preferably, the configuration information is further used to indicate that one column of reference signals has been inserted every y symbols in the time slot, and / or the configuration information is further used to indicate that one reference signal has been inserted every x subcarriers in the frequency domain corresponding to the time slot, and the reference signals are reference signals used for multicast and / or broadcast.

[0112] Preferably, the reference signal may be an SSB or a set of SSBs of a cell, or may be an SSB or a set of SSBs shared by a multicast and / or broadcast area, and / or Preferably, the reference signal may be a unified CSI-RS or a set of CSI-RS provided to terminals in one multicast and / or broadcast group, or may be a shared CSI-RS or a set of CSI-RS in one multicast and / or broadcast area.

[0113] Preferably, information of said reference signal needs to be exchanged between different network nodes; the x and the y are positive integers, the x is determined based on a subcarrier spacing, and the y is determined based on a subcarrier spacing; the unicast information includes at least one of a reference signal, a control signal, and data corresponding to the unicast; the multicast information includes at least one of a reference signal, a control signal, and data corresponding to the multicast; The broadcast information includes at least one of a reference signal, control signaling, and data corresponding to the broadcast.

[0114] Preferably, the x and y are positive integers, the x is determined based on the subcarrier spacing, and the y is further determined based on the measurement accuracy.

[0115] An embodiment of the present disclosure provides a terminal, the terminal comprising: a resource setting information receiving module configured to receive resource setting information transmitted from a network side device, the resource setting information being resource setting information for a multicast service and / or a broadcast service of a neighboring cell; and a measurement module configured to measure or not measure a resource corresponding to the resource setting information.

[0116] Preferably, the measurement module does not measure the resource corresponding to the resource configuration information when the terminal only has a unicast service; If the terminal only has a multicast service and / or a broadcast service, measure resources corresponding to the resource configuration information; or When the terminal has both a unicast service and a multicast service and / or a broadcast service, the terminal is configured to measure resources corresponding to the resource configuration information.

[0117] An embodiment of the present disclosure further provides a network side device, including a transceiver and a processor; the transceiver is configured to transmit a first DCI scrambled with a first RNTI to a terminal, the first DCI being used to indicate whether control information of one multicast and / or broadcast service has been updated or to indicate update-related information; or the transceiver is configured to transmit a second DCI scrambled with a second RNTI to a terminal, the second DCI being used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0118] Preferably, the setting information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0119] Preferably, the first DCI is that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed.

[0120] Preferably, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI further comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0121] Preferably, the first DCI comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service. Preferably, said set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in one cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0122] Preferably, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0123] Preferably, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI further comprises: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0124] Preferably, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; turning on or off CSI feedback for the multicast and / or broadcast service set; and the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services.

[0125] Preferably, the transceiver is configured to: When the control information of the multicast service and / or the broadcast service is accompanied by a resource of change information, the change information of the control information of the multicast service and / or the broadcast service is transmitted.

[0126] Preferably, the transceiver broadcasts control information for each multicast and / or broadcast service of a plurality of multicast and / or broadcast services, or configured to broadcast control information for a first multicast service and / or broadcast service among control information for a plurality of multicast services and / or broadcast services, wherein control information for other multicast services and / or broadcast services among the control information for the plurality of multicast services and / or broadcast services is the same as the control information for the first multicast service and / or broadcast service; The control information includes at least one of a repetition period, an offset amount, a starting subframe, and a modification period.

[0127] An embodiment of the present disclosure further provides a terminal including a transceiver and a processor; The transceiver is configured to receive a first DCI scrambled with a first RNTI sent from a network side device, the first DCI being used to indicate whether control information of one multicast service and / or broadcast service has been updated or to indicate update-related information; or the transceiver is configured to receive a second DCI scrambled with a second RNTI transmitted from a network side device, the second DCI being used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0128] Preferably, the setting information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0129] Preferably, the first DCI comprises: that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed. Preferably, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI further comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0130] Preferably, the first DCI comprises: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service. Preferably, said set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in one cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0131] Preferably, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0132] Preferably, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI further comprises: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0133] Preferably, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; turning on or off CSI feedback for the multicast and / or broadcast service set; and the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services.

[0134] Preferably, the transceiver is configured to: When the control information of the multicast service and / or broadcast service is accompanied by a resource of change information, the change information of the control information of the multicast service and / or broadcast service is received.

[0135] An embodiment of the present disclosure further provides a network side device, including a transceiver and a processor; the processor is configured to set a set of multicast and / or broadcast service control information for the m multicast and / or broadcast services; a cell in which the m multicast and / or broadcast services are located has n multicast and / or broadcast services within a multicast and / or broadcast area; The n multicast services and / or broadcast services are configured with a total of k sets of multicast service and / or broadcast service control information, m, n, and k are natural numbers of 1 or more, m is equal to or less than n, and k is equal to or less than n.

[0136] Preferably, the processor is further configured to set at least one of a repetition period, a modification period, and a start offset for each transmission of control information of the k sets of multicast and / or broadcast services; The repeat periods of the control information of the k sets of multicast and / or broadcast services may be the same or different in at least one of modification period and starting offset. Preferably, the transceiver is configured to transmit control information of n multicast and / or broadcast services to the terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0137] Preferably, the transceiver is further configured to transmit first information to the terminal, wherein the first information is used to indicate first transmission times, the first transmission times being transmission times within corresponding time domain units of control information of the n multicast and / or broadcast services.

[0138] Preferably, the first information is: information for indicating a start time of the first transmission period; information indicating a duration of the first transmission time; and information for indicating a first offset amount, the first offset amount being an offset amount between the first transmission time and a position of the RMSI of an SSB.

[0139] An embodiment of the present disclosure further provides a terminal including a transceiver and a processor; The processor is configured to determine monitoring occasions of a physical downlink control channel (PDCCH) for one or more multicast messages; The transceiver is configured to receive multicast information at monitoring occasions of a physical downlink control channel (PDCCH) for multicast messages; One multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in the PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is DCI for scheduling multicast services by the network; DCI for scheduling multicast service configuration information by the network; DCI for information on the control channel of the multicast service, DCI for scheduling information on a control channel for multicast services by the network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of the control channel of the multicast service by the network; DCI of the control channel modification information of the multicast service, and DCI of scheduling information of modification information of control channel of multicast service.

[0140] Preferably, the processor determines a PDCCH monitoring occasion for the multicast message based on a search space of the multicast message or a search space set for the multicast message; The search space for multicast messages is defined as A method in which a UE reads information of an Nth type PDCCH common search space set for setting a search space of a multicast message from a PDCCH common configuration configured by a network using an RRC message, the common search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; A method in which a UE reads a search space having an identifier of a common type from a PDCCH dedicated configuration configured by an RRC message, the search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; If the UE does not find the information of the Nth PDCCH common search space set for the multicast message search space configuration by the RRC message, the correlation between the PDCCH monitoring occasion and the SSB block index for the Nth PDCCH common search space set is the same as the correlation between the PDCCH monitoring occasion and the PDCCH common search space of type 0; by table lookup, determining by at least one of: a method of finding a CCE aggregation level in a common search space set of the Nth type PDCCH and the number of PDCCH candidates for each CCE aggregation level; Information on a common search space set of PDCCH of type N and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for monitoring an occasion of a PDCCH for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring the PDCCH for multicast messages; Fourth indication information indicating monitoring time slots and / or monitoring time symbols used for monitoring occasions of the PDCCH of the multicast message in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for monitoring the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH of the multicast message; and and seventh indication information used to indicate the index of the control resource set associated with this search space.

[0141] Preferably, one or more PDCCH monitoring occasions for a multicast message constitute one multicast message occasion.

[0142] Preferably, the processor is further configured to determine a multicast scheduling radio frame, where the MF is a system frame including one or more MOs or origins of MOs.

[0143] Preferably, the processor is configured to select one or more beams for receiving multicast scheduling information.

[0144] Preferably, one multicast message occasion is a PDCCH monitoring occasion for Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell.

[0145] Preferably, the occasion of one multicast message is a PDCCH monitoring occasion of one group of multicast messages; The Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer.

[0146] An embodiment of the present disclosure further provides a network side device, including a transceiver and a processor; the transceiver is configured to transmit multicast information in monitoring occasions of a physical downlink control channel (PDCCH) for one or more multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in the PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is DCI for scheduling multicast services by the network; DCI for scheduling multicast service configuration information by the network; DCI for information on the control channel of the multicast service, DCI for scheduling information on a control channel for multicast services by the network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of the control channel of the multicast service by the network; DCI of the control channel modification information of the multicast service, and DCI of scheduling information of modification information of control channel of multicast service.

[0147] Preferably, the processor associates the PDCCH monitoring occasion of the multicast message with a corresponding multicast message search space or a multicast message search space set; The search space for multicast messages is defined as A method for configuring a common search space set of an Nth type PDCCH for configuring a search space of a multicast message in a PDCCH common configuration configured by a radio resource control (RRC) message, wherein the common search space is used for a DCI format scrambled by a cyclic redundancy check code (CRC) by a multicast-RNTI in a primary cell; and a method for configuring by using an identifier in a PDCCH dedicated configuration configured by an RRC message as a common type search space, the search space being used for a DCI format in which CRC is scrambled by a multicast-RNTI in a primary cell; Information on a common search space set of the Nth type PDCCH and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for monitoring an occasion of a PDCCH for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring the PDCCH for multicast messages; Fourth indication information indicating monitoring time slots and / or monitoring time symbols used for monitoring occasions of the PDCCH of the multicast message in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for monitoring the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH of the multicast message; and and seventh indication information used to indicate the index of the control resource set associated with this search space.

[0148] Preferably, one or more PDCCH monitoring occasions for a multicast message constitute one multicast message occasion.

[0149] Preferably, the processor is configured to determine a multicast scheduling radio frame, where MF is a system frame including one or more MOs or an origin of MOs.

[0150] Preferably, the processor is configured to select one or more beams for transmitting multicast scheduling information.

[0151] Preferably, one multicast message occasion is a PDCCH monitoring occasion for Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell.

[0152] Preferably, the occasion of one multicast message is a PDCCH monitoring occasion of one group of multicast messages; The Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer.

[0153] An embodiment of the present disclosure further provides a network side device, including a transceiver and a processor; The transceiver is configured to transmit control information of n multicast and / or broadcast services to a terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0154] Preferably, the transceiver is further configured to transmit first information to the terminal, wherein the first information is used to indicate first transmission times, the first transmission times being transmission times within corresponding time domain units of control information of the n multicast and / or broadcast services.

[0155] Preferably, the first information is: information for indicating a start time of the first transmission period; information indicating a duration of the first transmission time; and information for indicating a first offset amount, the first offset amount being an offset amount between the first transmission time and a position of the RMSI of an SSB.

[0156] An embodiment of the present disclosure further provides a terminal including a transceiver and a processor; The transceiver is configured to receive, from the network side device, control information of n multicast and / or broadcast services transmitted every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0157] Preferably, the processor is configured to obtain, within said repetition period, time domain units corresponding to control information of multicast and / or broadcast services; the transceiver is configured to monitor control information of a corresponding multicast service and / or broadcast service in the time domain unit; Preferably, the time domain unit comprises: SFN mod sc-mcch-RepetitionPeriod=sc-mcch-Offset+(sc-mcch-Repetition Period)

number

[0158] Preferably, the transceiver receives first information transmitted from the network side device; and and receiving control information of n multicast and / or broadcast services at a second transmission time, wherein the first information is used to indicate the second transmission time, and the second transmission time is a transmission time within a corresponding time domain unit of the control information of the n multicast and / or broadcast services.

[0159] Preferably, the first information is: information for indicating a start time of the second transmission period; information indicating a duration of the second transmission period; and information for indicating a first offset amount, the first offset amount being an offset amount between the second transmission time and a position of the RMSI of an SSB.

[0160] An embodiment of the present disclosure further provides a network side device, including a transceiver and a processor; the transceiver is configured to transmit configuration information to a terminal, the configuration information transmitted to the terminal is used to indicate first symbol information and / or second symbol information in one time slot, the first symbol is a symbol for transmitting unicast information, and the second symbol is a symbol for transmitting multicast information and / or broadcast information; the first symbol information is the number of time symbols and / or the number of PRBs occupied by the first symbol; The second symbol information is the number of time symbols and / or the number of PRBs occupied by the second symbol.

[0161] Preferably, the configuration information is further used to indicate that one column of reference signals has been inserted every y symbols in the time slot, and / or the configuration information is further used to indicate that one reference signal has been inserted every x subcarriers in the frequency domain corresponding to the time slot, and the reference signals are reference signals used for multicast and / or broadcast.

[0162] Preferably, the reference signal may be an SSB or a set of SSBs of a cell, or may be an SSB or a set of SSBs shared by a multicast and / or broadcast area, and / or Preferably, the reference signal may be a unified CSI-RS or a set of CSI-RS provided to terminals in one multicast and / or broadcast group, or may be a shared CSI-RS or a set of CSI-RS in one multicast and / or broadcast area.

[0163] Preferably, information of said reference signal needs to be exchanged between different network nodes; the x and the y are positive integers, the x is determined based on a subcarrier spacing, and the y is determined based on a subcarrier spacing; the unicast information includes at least one of a reference signal, a control signal, and data corresponding to the unicast; the multicast information includes at least one of a reference signal, a control signal, and data corresponding to the multicast; The broadcast information includes at least one of a reference signal, control signaling, and data corresponding to the broadcast.

[0164] Preferably, the x and y are positive integers, the x is determined based on the subcarrier spacing, and the y is further determined based on the measurement accuracy.

[0165] An embodiment of the present disclosure further provides a terminal including a transceiver and a processor; The transceiver is configured to receive setting information transmitted from a network side device; The configuration information transmitted to the terminal is used to indicate first symbol information and / or second symbol information in one time slot, the first symbol being a symbol for transmitting unicast information, and the second symbol being a symbol for transmitting multicast information and / or broadcast information; the first symbol information is the number of time symbols and / or the number of PRBs occupied by the first symbol; The second symbol information is the number of time symbols and / or the number of PRBs occupied by the second symbol.

[0166] Preferably, the configuration information is further used to indicate that one column of reference signals has been inserted every y symbols in the time slot, and / or the configuration information is further used to indicate that one reference signal has been inserted every x subcarriers in the frequency domain corresponding to the time slot, and the reference signals are reference signals used for multicast and / or broadcast.

[0167] Preferably, the reference signal may be an SSB or a set of SSBs of a cell, or may be an SSB or a set of SSBs shared by a multicast and / or broadcast area, and / or Preferably, the reference signal may be a unified CSI-RS or a set of CSI-RS provided to terminals in one multicast and / or broadcast group, or may be a shared CSI-RS or a set of CSI-RS in one multicast and / or broadcast area.

[0168] Preferably, there is a need to exchange information about said reference signals between different network nodes; the x and the y are positive integers, the x is determined based on a subcarrier spacing, and the y is determined based on a subcarrier spacing; the unicast information includes at least one of a reference signal, a control signal, and data corresponding to the unicast; the multicast information includes at least one of a reference signal, a control signal, and data corresponding to the multicast; The broadcast information includes at least one of a reference signal, control signaling, and data corresponding to the broadcast.

[0169] Preferably, the x and y are positive integers, the x is determined based on the subcarrier spacing, and the y is further determined based on the measurement accuracy.

[0170] An embodiment of the present disclosure further provides a terminal including a transceiver and a processor; The transceiver receives resource configuration information transmitted from a network side device, the resource configuration information being resource configuration information for a multicast service and / or a broadcast service of a neighboring cell; and The device is configured to measure or not measure a resource corresponding to the resource setting information.

[0171] Preferably, the transceiver does not measure resources corresponding to the resource configuration information when the terminal only has a unicast service; If the terminal only has a multicast service and / or a broadcast service, measure resources corresponding to the resource configuration information; or When the terminal has both a unicast service and a multicast service and / or a broadcast service, the terminal is configured to measure resources corresponding to the resource configuration information.

[0172] An embodiment of the present disclosure further provides a terminal, the terminal including a memory, a processor, and a program executable on the processor stored in the memory, the program implementing steps of a method applicable to the terminal when the processor executes the program.

[0173] An embodiment of the present disclosure further provides a network side device, the network side device including a memory, a processor, and a program executable on the processor, the program being stored in the memory, and the steps of the method applied to the network side device are realized when the processor executes the program.

[0174] In a ninth aspect, an embodiment of the present disclosure further provides a readable storage medium having a program stored thereon, the program implementing the steps of any of the above methods when executed by a processor. [Effects of the Invention]

[0175] According to the above technical means of the embodiments of the present disclosure, in the embodiments of the present disclosure, DCI is used to indicate whether control information of multicast services and / or broadcast services has been updated, thereby accelerating the terminal's acquisition of MCCH modification information, enabling the terminal to acquire accurate multicast and / or broadcast data more quickly, meeting the requirement of low latency, and achieving beneficial effects that can be applied to 5G multi-application scenarios. [Brief explanation of the drawings]

[0176] [Figure 1] FIG. 1 is a schematic diagram of a means for modifying MCCH information according to the prior art; [Figure 2] 1 is a flowchart of an information communication method according to an embodiment of the present disclosure. [Figure 3] 1 is a flowchart of an information communication method according to an embodiment of the present disclosure. [Figure 4] 1 is a flowchart of an information communication method according to an embodiment of the present disclosure. [Figure 5] 1 is a flowchart of an information communication method according to an embodiment of the present disclosure. [Figure 6] 1 is a flowchart of an information setting method according to an embodiment of the present disclosure. [Figure 7] 1 is a flowchart of an information receiving method according to an embodiment of the present disclosure. [Figure 7a] 1 is a flowchart of an information transmission method according to an embodiment of the present disclosure. [Figure 7b] 1 is a flowchart of an information receiving method according to an embodiment of the present disclosure. [Figure 8] 1 is a flowchart of an information transmission method according to an embodiment of the present disclosure. [Figure 9] 1 is a flowchart of an information receiving method according to an embodiment of the present disclosure. [Figure 10] 1 is a flowchart of a resource configuration method according to an embodiment of the present disclosure. [Figure 11] 1 is a flowchart of a resource configuration method according to an embodiment of the present disclosure. [Figure 12] 1 is a flowchart of an information measurement method according to an embodiment of the present disclosure. [Figure 13] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 14] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 15] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 16] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 17] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 18] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 18a] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 19] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 20] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 21] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 22] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 23] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 24] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 25] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 25a] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 25b] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 25c] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 26] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 27] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 28] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 29] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 30] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 31] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 32] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 33] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 34] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 35] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 36] FIG. 2 is a structural schematic diagram of a network-side device according to an embodiment of the present disclosure; [Figure 37] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. [Figure 38] FIG. 1 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0177] In order to clarify the objectives, technical means and advantages of the embodiments of the present disclosure, the following will clearly and completely describe the technical means of the embodiments of the present disclosure with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only some embodiments of the present disclosure, but not all embodiments. All other embodiments that a person skilled in the art can obtain based on the described embodiments of the present disclosure belong to the protection scope of the present disclosure.

[0178] As shown in FIG. 2, FIG. 2 is a flowchart of an information communication method provided by an embodiment of the present disclosure, which is applied to a network-side device and includes step 21.

[0179] Step 21: Sending first downlink control information (DCI) scrambled by a first Radio Network Temporary Identifier (RNTI) to the terminal, wherein the first DCI is used to indicate whether control information of one multicast service and / or broadcast service has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0180] The embodiments of the present disclosure use DCI to indicate whether control information for multicast and / or broadcast services has been updated, thereby accelerating the terminal's acquisition of Multicast Control Channel (MCCH) modification information and enabling the terminal to acquire accurate multicast and / or broadcast data more quickly, thereby meeting the low latency requirements and applicable to 5G multi-application scenarios.

[0181] Optionally, the configuration information of the one multicast service and / or broadcast service includes: A list of Temporary Mobile Group Identities (TMGIs), a session identifier (Session ID) corresponding to the TMGI in the list of TMGIs; A group RNTI (G-RNTI) corresponding to a TMGI in the list of TMGIs; the bandwidth part (BWP) corresponding to the TMGI in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; Discontinuous Reception (DRX) settings corresponding to the TMGIs in the list of TMGIs; Uplink resource configuration of Hybrid Automatic Repeat reQuest (HARQ) feedback corresponding to the TMGI in the list of TMGIs; and and an uplink resource configuration of a Channel State Information (CSI) report corresponding to the TMGI in the list of TMGIs.

[0182] It should be understood that the configuration information of the multicast service and / or broadcast service on the MCCH may further include, in addition to at least one of the above, at least one of a synchronization signal / physical broadcast channel signal block (or synchronization signal block) (Synchronization Signal and PBCH block, SSB, i.e., SS / PBCH Block, which may include a PSS (Primary Synchronization Signal), an SSS (Secondary Synchronization Signal), and a PBCH (Physical Broadcast Channel), and may also be referred to as a synchronization signal / broadcast channel block) corresponding to the TMGI in the list of TMGIs, a Channel State Information Reference Signal (CSI-RS), a Transmission Configuration Indicator (TCI), and a beam.

[0183] PBCH is the Physical Broadcast Channel, and SSB is the Synchronization Signal and PBCH block (SSB for short).

[0184] Optionally, the first DCI comprises: that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed.

[0185] Optionally, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI may further include: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single cell single point to multipoint (SC-PTM) transmission method to a multi-cell single point to multipoint (i.e., MBMS) transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0186] In the embodiment of the present disclosure, one scheduling unit (for example, one time slot) can indicate one or more of the above information.

[0187] For example, if one cell has one Single Cell-Multicast Control Channel (SC-MCCH), the SC-MCCH information can be updated by one PDCCH, eliminating the need for the prior art method of updating the SC-MCCH information by notifying the period and modification period. The specific method is as follows:

[0188] A field in the DCI of the PDCCH is used to indicate the MCCH state, and the message can be scrambled with a new RNTI or can be scrambled using the SC-RNTI.

[0189] The MCCH Status Indicator-2 bits are determined based on Table 1 below.

[0190] [Table 1]

[0191] Alternatively, the MCCH Status Indicator-4 bits are determined based on Table 2 below.

[0192] [Table 2]

[0193] If it is 11 in Table 1 or 1111 in Table 2, it is Messages-8. If it is 01 or 0001, this field is reserved and the UE can ignore Tables 3 and 4 below.

[0194] [Table 3]

[0195] or [Table 4]

[0196] The UE then determines whether the SC-MCCH information has changed based on the content in this DCI, and optionally determines which multicast service's SC-MCCH information has changed and / or the specific changes and where the changed SC-MCCH information can be read.

[0197] Finally, the UE reads the SC-PTM configuration information based on the changed SC-MCCH information.

[0198] For example, when one cell has multiple SC-MCCHs, First step: Different groups have different SC-RNTIs, and RRC messages are used to set up correspondences between different multicast services and SC-RNTIs. Second step: Updating of SC-MCCH information can be realized with one PDCCH, eliminating the need for the prior art method of updating SC-MCCH information by notifying the period and correction period. The specific method is as follows:

[0199] A field in the DCI of the PDCCH is used to indicate the MCCH state, and the message can be scrambled with a new RNTI or can be scrambled using the SC-RNTI. The MCCH Status Indicator-2 bits are determined based on the following table. [Table 4A] If it is 11, it is Messages-8 bits. If it is 01, this field is reserved and the UE can ignore Table 5 below.

[0200] [Table 5]

[0201] The UE then determines whether the SC-MCCH information has changed based on the content in this DCI, and optionally determines which multicast service's SC-MCCH information has changed and / or the specific changes and where the changed SC-MCCH information can be read.

[0202] Optionally, the first DCI is that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0203] Optionally, after transmitting a first DCI scrambled with a first RNTI to the terminal, further The first DCI includes information for indicating that control information of a multicast service and / or a broadcast service has changed, and / or If the control information of the multicast service and / or broadcast service is accompanied by resources for change information, the change information of the control information of the multicast service and / or broadcast service is transmitted.

[0204] Optionally, the method further comprises: - broadcasting control information for each multicast and / or broadcast service of a plurality of multicast and / or broadcast services; or broadcasting control information of a first multicast service and / or broadcast service among control information of a plurality of multicast services and / or broadcast services, wherein control information of other multicast services and / or broadcast services among the control information of the plurality of multicast services and / or broadcast services is the same as the control information of the first multicast service and / or broadcast service; The control information includes at least one of a repetition period, an offset amount, a starting subframe, and a modification period.

[0205] In the embodiment of the present disclosure, if there are multiple SC-MCCHs in a cell, for example, 10 SC-MCCHs, one method is to still broadcast the scheduling information of each set of SC-MCCHs, such as the repetition period, offset amount, starting subframe and modification period, by a system message; or When the scheduling information of multiple multicast groups includes the same scheduling information parameters, such as the repeat period of information transmission, the offset amount, the starting subframe, and the modification period, broadcast one set and then attach the multicast group information; Alternatively, if the repetition periods of the transmission information of different groups are the same, in order to maintain good forward compatibility and save signaling overhead, there is no need to broadcast multiple sets of SC-MCCH repetition periods, offset amounts, starting subframes and modification periods in system messages, and only one set of scheduling information such as SC-MCCH repetition period, offset amount, starting subframe and modification period is still broadcast in system messages, and the UE derives the appearance time of the SC-MCCH of the corresponding group based on the ID number of different groups.

[0206] As shown in FIG. 3, FIG. 3 is a flowchart of an information communication method provided by an embodiment of the present disclosure, which is applied to a network-side device and includes step 31.

[0207] Step 31: Send a second DCI scrambled with a second RNTI to the terminal, where the second DCI is used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0208] The embodiments of the present disclosure use DCI to indicate whether control information for multicast and / or broadcast services has been updated, thereby accelerating the terminal's acquisition of Multicast Control Channel (MCCH) modification information and enabling the terminal to acquire accurate multicast and / or broadcast data more quickly, thereby meeting the low latency requirements and applicable to 5G multi-application scenarios.

[0209] Optionally, the configuration information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0210] Optionally, the set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in a cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0211] Optionally, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0212] Optionally, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI may further include: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0213] Optionally, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; turning on or off CSI feedback for the multicast and / or broadcast service set; and the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services.

[0214] Optionally, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0215] Optionally, the second DCI is It is used to indicate the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services.

[0216] Optionally, the second DCI further comprises: The configuration information of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set has changed; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service in the set of multicast and / or broadcast services for which control information of the multicast and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services; and The CSI feedback control section 100 is used to indicate at least one of turning on or off CSI feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services.

[0217] Optionally, after transmitting a second DCI scrambled with a second RNTI to the terminal, further The second DCI includes information for indicating that control information of a multicast service and / or a broadcast service has changed; and / or If the control information of the multicast service and / or broadcast service is accompanied by resources for change information, the change information of the control information of the multicast service and / or broadcast service is transmitted.

[0218] Optionally, the method further comprises: - broadcasting control information for each multicast and / or broadcast service of a plurality of multicast and / or broadcast services; or broadcasting control information of a first multicast service and / or broadcast service among control information of a plurality of multicast services and / or broadcast services, wherein control information of other multicast services and / or broadcast services among the control information of the plurality of multicast services and / or broadcast services is the same as the control information of the first multicast service and / or broadcast service; The control information includes at least one of a repetition period, an offset amount, a starting subframe, and a modification period.

[0219] As shown in FIG. 4, FIG. 4 is a flowchart of an information communication method provided by an embodiment of the present disclosure, which is applied to a terminal and includes the following step 41:

[0220] Step 41: Receive a first DCI scrambled by a first RNTI sent from a network side device, where the first DCI is used to indicate whether control information of one multicast service and / or broadcast service has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0221] The embodiments of the present disclosure use DCI to indicate whether control information for multicast and / or broadcast services has been updated, thereby accelerating the terminal's acquisition of MCCH modification information, enabling the terminal to acquire accurate multicast and / or broadcast data more quickly, meeting the requirement for low latency, and applicable to 5G multi-application scenarios.

[0222] Optionally, the configuration information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0223] Optionally, the first DCI is that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed.

[0224] Optionally, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI may further include: that the configuration information of the multicast service and / or broadcast service has changed; The transmission mode of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode (i.e., an MBMS transmission mode); The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0225] Optionally, the first DCI is that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0226] Optionally, after receiving a first DCI scrambled with a first RNTI transmitted from the network side device, further: The first DCI includes information for indicating that control information of a multicast service and / or a broadcast service has changed, and / or If the control information of the multicast service and / or broadcast service is accompanied by resources of change information, the method includes receiving change information of the control information of the multicast service and / or broadcast service.

[0227] As shown in FIG. 5, FIG. 5 is a flowchart of an information communication method provided by an embodiment of the present disclosure, which is applied to a terminal and includes the following step 51:

[0228] Step 51: Receive a second DCI scrambled with a second RNTI sent from a network side device, where the second DCI is used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0229] The embodiments of the present disclosure use DCI to indicate whether control information for multicast and / or broadcast services has been updated, thereby accelerating the terminal's acquisition of MCCH modification information, enabling the terminal to acquire accurate multicast and / or broadcast data more quickly, meeting the requirement for low latency, and applicable to 5G multi-application scenarios.

[0230] Optionally, the configuration information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0231] Optionally, the set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in a cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0232] Optionally, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0233] Optionally, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI may further include: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0234] Optionally, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0235] Optionally, the second DCI is It is used to indicate the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services. Optionally, the second DCI further comprises: The configuration information of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set has changed; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service in the set of multicast and / or broadcast services for which control information of the multicast and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services; and The CSI feedback control section 100 is used to indicate at least one of turning on or off CSI feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services.

[0236] Optionally, after receiving a second DCI scrambled with a second RNTI transmitted from the network side device, further: The second DCI includes information for indicating that control information of a multicast service and / or a broadcast service has changed; and / or If the control information of the multicast service and / or broadcast service is accompanied by resources of change information, the method includes receiving change information of the control information of the multicast service and / or broadcast service.

[0237] As shown in FIG. 6, FIG. 6 is a flowchart of an information setting method provided by an embodiment of the present disclosure, which is applied to a network-side device and includes the following step 61:

[0238] Step 61: setting one set of multicast service and / or broadcast service control information for m multicast service and / or broadcast service; a cell in which the m multicast and / or broadcast services are located has n multicast and / or broadcast services within a multicast and / or broadcast area; The n multicast services and / or broadcast services are configured with a total of k sets of multicast service and / or broadcast service control information, m, n, and k are natural numbers of 1 or more, m is equal to or less than n, and k is equal to or less than n.

[0239] In an embodiment of the present disclosure, one set of control information can be configured for multiple multicast and / or broadcast services to improve resource utilization.

[0240] Optionally, the method further comprises: setting at least one of a repetition period, a modification period, and a starting offset for each transmission of control information for the k sets of multicast and / or broadcast services; The repeat periods of the control information of the k sets of multicast and / or broadcast services may be the same or different in at least one of modification period and starting offset.

[0241] Optionally, the method further comprises: The method includes transmitting control information of n multicast and / or broadcast services to a terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0242] Optionally, before transmitting the control information of the n multicast and / or broadcast services to the terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, the method further comprises: The method includes a transmitting step of transmitting first information to a terminal, wherein the first information is used to indicate a first transmission time, and the first transmission time is a transmission time within a corresponding time domain unit of control information of the n multicast services and / or broadcast services.

[0243] Optionally, the first information is: information for indicating a start time of the first transmission period; information indicating a duration of the first transmission time; and information for indicating a first offset amount, the first offset amount being an offset amount between the first transmission time and a position of an RMSI of an SSB; RMSI (Remaining Minimum System Information) is the remaining minimum system information.

[0244] As shown in FIG. 7, FIG. 7 is a flowchart of an information receiving method provided by an embodiment of the present disclosure, which is applied to a terminal and includes the following step 71:

[0245] Step 71: Determine monitoring occasions of a physical downlink control channel PDCCH for one or more multicast messages, and receive multicast information at the monitoring occasions of the physical downlink control channel PDCCH for the multicast messages; One multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in the PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is DCI for scheduling multicast services by the network; DCI for scheduling multicast service configuration information by the network; DCI for information on the control channel of the multicast service, DCI for scheduling information on a control channel for multicast services by the network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of the control channel of the multicast service by the network; DCI of the control channel modification information of the multicast service, and DCI of scheduling information of modification information of control channel of multicast service.

[0246] The multicast message is the content attached to the PDSCH, and the multicast information refers to the monitored content, and the terminal can use the multicast information to find the transmission resource of the multicast message.

[0247] In the embodiments of the present disclosure, in the phrase "determine monitoring occasions of the physical downlink control channel PDCCH for one or more multicast messages, and receive multicast information at the monitoring occasions of the physical downlink control channel PDCCH for multicast messages," the word "receive" also means "monitor" or "discover."

[0248] In an embodiment of the present disclosure, for monitoring occasions (MOs) for monitoring multicast scheduling information and / or multicast service information, especially for terminals in idle and connected states, a common search space is used to receive multicast scheduling information and / or multicast service information, and the terminals only need to wake up at the corresponding scheduling time slots to monitor the PDCCH and the corresponding PDSCH, and do not need to continue monitoring the PDCCH of the SC-RNTI, thereby reducing power consumption.

[0249] Taking multicast scheduling information monitoring as an example, the terminal monitors multicast scheduling information in multicast scheduling information occasions (MOs) within each multicast scheduling information reading period. An MO is a group of PDCCH monitoring occasions, which may include multiple time slots (e.g., subframes or Orthogonal Frequency Division Multiplexing (OFDM) symbols), within which the DCI of the multicast scheduling message can be transmitted.

[0250] Optionally, determining a monitoring occasion of a physical downlink control channel (PDCCH) for the one or more multicast messages comprises: Determining a PDCCH monitoring occasion for the multicast message based on a search space for the multicast message or a search space set for the multicast message; The search space for multicast messages is defined as A method in which a UE reads information of an Nth type PDCCH common search space set for setting a search space of a multicast message from a PDCCH common configuration configured by a network using an RRC message, the common search space being used for a DCI format scrambled with a cyclic redundancy check (CRC) code by a multicast-RNTI in a primary cell; A method in which a UE reads a search space having an identifier of a common type from a PDCCH dedicated configuration configured by an RRC message, the search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; If the UE does not find the information of the Nth PDCCH common search space set for the multicast message search space configuration by the RRC message, the correlation between the PDCCH monitoring occasion and the SSB block index for the Nth PDCCH common search space set is the same as the correlation between the PDCCH monitoring occasion and the PDCCH common search space of type 0; determining by at least one of the following methods: finding the CCE aggregation levels in the common search space set of the Nth type PDCCH and the number of PDCCH candidates for each CCE aggregation level by table lookup; Information on a common search space set of the Nth type PDCCH and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for monitoring an occasion of a PDCCH for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring the PDCCH for multicast messages; Fourth indication information indicating monitoring time slots and / or monitoring time symbols used for monitoring occasions of the PDCCH of the multicast message in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for monitoring the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH of the multicast message; and and seventh indication information used to indicate the index of a control resource set associated with this search space.

[0251] Alternatively, one or more PDCCH monitoring occasions for a multicast message constitute one multicast message occasion.

[0252] The method for determining the MF and MO that monitor the multicast scheduling message will be described below using an example.

[0253] A set of PDCCH candidates to be monitored by the terminal is defined based on a PDCCH search space set, and the search space set may be a common search space set or a terminal-specific search space set. The terminal may define a TypeN-PDCCH common search space set obtained by adding an X-SearchSpace setting to PDCCH-ConfigCommon (PDCCH common setting), which is used to set a DCI format whose CRC is scrambled by multicast-RNTI in the primary cell, If the UE is not provided with the higher layer parameter MB-SearchSpace for the Type x-PDCCH common search space set, the association relationship between the PDCCH monitoring occasion and the SS / PBCH block index for the Type X-PDCCH common search space set is the same as that for the TYPE 0-PDCCH common monitoring occasion, and the TYPE 0-PDCCH common search space to be configured, and the X-PDCCH common search space set, where the control channel element (CCE) aggregation level and the number of PDCCH candidates for each CCE aggregation level in the X-PDCCH common search space set can be found by table lookup, Determine a PDCCH monitoring occasion for monitoring multicast scheduling information based on the X-Search Space specified by the protocol and the first PDCCH monitoring occasion set by RRC signaling, and / or monitor PDCCH candidates in one or more search space sets of an X-PDCCH common search space set, which is set by the network whether the PDCCH monitoring occasion for multicast scheduling is the same as the RMSI.

[0254] For example, if one Monitoring-periodicity-PDCCH-slot is 2, there are eight PDCCH monitoring occasions (MO) for each monitoring time slot and / or monitoring time symbol, which indicate the PDCCH monitoring occasions for multicast messages in the form of a bitmap. Specifically, the RRC can define the starting OFDM time symbol and the specific symbols that need to be monitored. For example, if 001111011100000111101111000, symbols #2, #3, #4, #5, #7, #8, #9, and #10 need to be monitored. Or, If one Monitoring-periodicity-PDCCH-slot is 2, there are four PDCCH monitoring occasions in each slot, and the symbols in the first slot that need to be monitored are #2, 3, 4, and 5, and the symbols in the second slot that need to be monitored are #7, 8, 9, and 10. Specifically, the RRC can define the starting OFDM time symbol and the specific symbol that needs to be monitored (e.g., 00111100000000000001111000).

[0255] Optionally, the method further comprises: The method includes determining a multicast scheduling radio frame (MF), where the MF is a system frame that includes one or more MOs or the origin of the MOs.

[0256] One multicast scheduling radio frame (MF) is a system frame that may include one or more MOs or the origin of MOs.

[0257] Optionally, the method further comprises: The method includes selecting one or more beams for receiving multicast scheduling information.

[0258] Associated with the beam information is SSB / CSI-RS.

[0259] In multi-beam operation, the UE may assume that the same multicast scheduling message is repeated in all transmitted beams, and therefore the UE may select one or more beams for receiving the multicast scheduling message.

[0260] Alternatively, the occasion of one multicast message is a PDCCH monitoring occasion of Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell.

[0261] MO is the case of monitoring one group of Y consecutive PDCCHs, where Y is determined based on the number of SSBs actually transmitted in the cell.

[0262] Optionally, one multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; The Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer.

[0263] The meaning of the Zth PDCCH monitoring occasion is that one multicast message occasion consists of Y multicast message PDCCH monitoring occasions, and therefore the Zth PDCCH monitoring occasion is the Zth PDCCH monitoring occasion in the Y multicast message PDCCH monitoring occasions.

[0264] As shown in FIG. 7a, FIG. 7a is a flowchart of an information transmission method provided by an embodiment of the present disclosure, which is applied to a network-side device and includes the following step 701:

[0265] Step 701: Sending multicast information on monitoring occasions of a physical downlink control channel (PDCCH) for one or more multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in the monitoring occasion of the PDCCH of one multicast message includes at least one time symbol.

[0266] The multicast information is DCI for scheduling multicast services by the network; DCI for scheduling multicast service configuration information by the network; DCI for information on the control channel of the multicast service, DCI for scheduling information on a control channel for multicast services by the network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of the control channel of the multicast service by the network; DCI of the control channel modification information of the multicast service, and DCI of scheduling information of modification information of control channel of multicast service.

[0267] Optionally, the step of transmitting multicast information in monitoring occasions of a Physical Downlink Control Channel (PDCCH) of the one or more multicast messages comprises: Associating the PDCCH monitoring occasion of the multicast message with a corresponding multicast message search space or a multicast message search space set; The search space for multicast messages is defined as A method for configuring a common search space set of an Nth type PDCCH for configuring a search space of a multicast message in a PDCCH common configuration configured by a radio resource control (RRC) message, wherein the common search space is used for a DCI format scrambled by a cyclic redundancy check code (CRC) by a multicast-RNTI in a primary cell; and a method for configuring by using at least one of the following: a method for configuring an identifier in a PDCCH dedicated configuration configured by an RRC message as a common type search space, wherein the search space is used for a DCI format in which CRC is scrambled by a multicast-RNTI in a primary cell; Information on a common search space set of PDCCH of type N and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for monitoring an occasion of a PDCCH for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring the PDCCH for multicast messages; Fourth indication information indicating monitoring time slots and / or monitoring time symbols used for monitoring occasions of the PDCCH of the multicast message in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for monitoring the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH of the multicast message; and and seventh indication information used to indicate the index of the control resource set associated with this search space.

[0268] Alternatively, one or more PDCCH monitoring occasions for a multicast message constitute one multicast message occasion.

[0269] Optionally, the method further comprises: The method includes determining a multicast scheduling radio frame, where MF is a system frame including one or more MOs or origins of MOs.

[0270] Optionally, the method further comprises: The method includes selecting one or more beams for transmitting multicast scheduling information.

[0271] Alternatively, the occasion of one multicast message is a PDCCH monitoring occasion of Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell.

[0272] Optionally, one multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; The Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer.

[0273] As shown in FIG. 7b, FIG. 7b is a flowchart of an information receiving method provided by an embodiment of the present disclosure, which is applied to a terminal and includes the following step 711:

[0274] Step 711: Determine a PDCCH monitoring occasion for one or more multicast messages, and receive multicast information at the occasion of the multicast message; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in the PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is DCI for scheduling multicast services by the network; DCI for scheduling multicast service configuration information by the network; DCI for information on the control channel of the multicast service, DCI for scheduling information on a control channel for multicast services by the network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of the control channel of the multicast service by the network; DCI of the control channel modification information of the multicast service, and DCI of scheduling information of modification information of control channel of multicast service.

[0275] In the embodiments of the present disclosure, in the phrase "determine monitoring occasions of the physical downlink control channel PDCCH for one or more multicast messages, and receive multicast information at the monitoring occasions of the physical downlink control channel PDCCH for multicast messages," the word "receive" also means "monitor" or "discover."

[0276] In an embodiment of the present disclosure, for the PDCCH monitoring occasion for monitoring multicast scheduling information and / or multicast service information, especially for terminals in idle state and connected state, a common search space is used to receive multicast scheduling information and / or multicast service information, and the terminal only needs to wake up at the corresponding scheduling time slot to monitor the PDCCH and the corresponding PDSCH, and does not need to continue monitoring the PDCCH of the multicast RNTI, thereby reducing power consumption.

[0277] A monitoring occasion of the PDCCH for the multicast message is determined based on the search space of the multicast message or the search space set of the multicast message.

[0278] The search space for multicast messages is defined as A method in which a UE reads information of an Nth type PDCCH common search space set for setting a search space of a multicast message from a PDCCH common configuration configured by a network using an RRC message, the common search space being used for a DCI format scrambled with a cyclic redundancy check (CRC) code by a multicast-RNTI in a primary cell; A method in which a UE reads a search space having an identifier of a common type from a PDCCH dedicated configuration configured by an RRC message, the search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; If the UE does not find the information of the Nth PDCCH common search space set for the multicast message search space configuration by the RRC message, the correlation between the PDCCH monitoring occasion and the SSB block index for the Nth PDCCH common search space set is the same as the correlation between the PDCCH monitoring occasion and the PDCCH common search space of type 0; determining by at least one of the following methods: finding the CCE aggregation levels in the common search space set of the Nth type PDCCH and the number of PDCCH candidates for each CCE aggregation level by table lookup; Information on a common search space set of the Nth type PDCCH and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for monitoring an occasion of a PDCCH for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring the PDCCH for multicast messages; Fourth indication information indicating monitoring time slots and / or monitoring time symbols used for monitoring occasions of the PDCCH of the multicast message in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for monitoring the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH of the multicast message; and and seventh indication information used to indicate the index of a control resource set associated with this search space.

[0279] A set of PDCCH candidates to be monitored by the terminal is defined based on a PDCCH search space set, and the search space set may be a common search space set or a terminal-specific search space set. The terminal may define a TypeN-PDCCH common search space set obtained by adding an X-SearchSpace setting to PDCCH-ConfigCommon (PDCCH common setting), which is used to set a DCI format whose CRC is scrambled by multicast-RNTI in the primary cell, If the UE is not provided with the higher layer parameter MB-SearchSpace for the Type x-PDCCH common search space set, the association relationship between the PDCCH monitoring occasion and the SS / PBCH block index for the Type X-PDCCH common search space set is the same as that for the TYPE 0-PDCCH common monitoring occasion, and the TYPE 0-PDCCH common search space to be configured, and the X-PDCCH common search space set, where the control channel element (CCE) aggregation level and the number of PDCCH candidates for each CCE aggregation level in the X-PDCCH common search space set can be found by table lookup, Determine a PDCCH monitoring occasion for monitoring multicast scheduling information based on the X-Search Space specified by the protocol and the first PDCCH monitoring occasion set by RRC signaling, and / or monitor PDCCH candidates in one or more search space sets of an X-PDCCH common search space set, which is set by the network whether the PDCCH monitoring occasion for multicast scheduling is the same as the RMSI.

[0280] For example, if one Monitoring-periodicity-PDCCH-slot is 2, there are eight PDCCH monitoring occasions (MO) for each monitoring time slot and / or monitoring time symbol, which indicate the PDCCH monitoring occasions for multicast messages in the form of a bitmap. Specifically, the RRC can define the starting OFDM time symbol and the specific symbols that need to be monitored. For example, if 001111011100000111101111000, symbols #2, #3, #4, #5, #7, #8, #9, and #10 need to be monitored. Or, If one Monitoring-periodicity-PDCCH-slot is 2, there are four PDCCH monitoring occasions in each slot, and the symbols in the first slot that need to be monitored are #2, 3, 4, and 5, and the symbols in the second slot that need to be monitored are #7, 8, 9, and 10. Specifically, the RRC can define the starting OFDM time symbol and the specific symbol that needs to be monitored (e.g., 00111100000000000001111000).

[0281] Optionally, the method further comprises: The method includes selecting one or more beams for receiving multicast scheduling information.

[0282] Associated with the beam information is SSB / CSI-RS.

[0283] In multi-beam operation, the UE may assume that the same multicast scheduling message is repeated in all transmitted beams, and therefore the UE may select one or more beams for receiving the multicast scheduling message.

[0284] Optionally, one multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; An occasion of one multicast message is a monitoring occasion of the PDCCH for Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell. MO is the case of monitoring one group of Y consecutive PDCCHs, where Y is determined based on the number of SSBs actually transmitted in the cell. Optionally, one multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; The Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer.

[0285] As shown in FIG. 8, FIG. 8 is a flowchart of an information transmission method provided by an embodiment of the present disclosure, which is applied to a network-side device and includes the following step 81:

[0286] Step 81: Within a repetition period of the control information of the multicast service and / or broadcast service, transmit control information of n multicast service and / or broadcast service to the terminal every t time domain units, where n and t are positive integers.

[0287] In an embodiment of the present disclosure, control information for multiple multicast and / or broadcast services can be transmitted separately, allowing a terminal to monitor the control information corresponding to the corresponding transmission time, and not need to receive the control information for all multicast and / or broadcast services.

[0288] In the prior art, all multicast and / or broadcast control information is transmitted on one MCCH. And all multicast scheduling information in the prior art is transmitted on one SC-MCCH. In the embodiment of the present disclosure, various multicast SC-MCCHs are introduced. The SC-MCCH information of multiple multicasts broadcast from the network is generated by a distributed unit (DU) node and then sent to a centralized unit (CU) node for broadcasting. Before generating system information related to the SC-MCCH, the DU node needs to obtain information related to the multicast service, such as the TMGI, session identifier, interested UEs, and related Quality of Service (QoS), from the CU.

[0289] Optionally, before transmitting the control information of the n multicast and / or broadcast services to the terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, the method further comprises: The method includes a transmitting step of transmitting first information to a terminal, wherein the first information is used to indicate a first transmission time, and the first transmission time is a transmission time within a corresponding time domain unit of control information of the n multicast and / or broadcast services.

[0290] Optionally, the first information is: information for indicating a start time of the first transmission period; information indicating a duration of the first transmission time; and information for indicating a first offset amount, the first offset amount being an offset amount between the first transmission time and a position of the RMSI of an SSB.

[0291] As shown in FIG. 9, FIG. 9 is a flowchart of an information receiving method provided by an embodiment of the present disclosure, which is applied to a terminal and includes the following step 91:

[0292] Step 91: Receive control information of n multicast and / or broadcast services transmitted every t time domain units within a repetition period of the control information of the multicast and / or broadcast services from a network side device, where n and t are positive integers.

[0293] In the prior art, all multicast and / or broadcast control information is transmitted on one MCCH.

[0294] In an embodiment of the present disclosure, control information for multiple multicast and / or broadcast services can be transmitted separately, allowing a terminal to monitor the control information corresponding to the corresponding transmission time, and not need to receive the control information for all multicast and / or broadcast services.

[0295] Optionally, receiving, from the network side device, control information of n multicast services and / or broadcast services transmitted every t time domain units within a repetition period of the control information of the multicast service and / or broadcast service, obtaining, within the repetition period, time domain units corresponding to control information of multicast and / or broadcast services; monitoring the time domain unit for control information of a corresponding multicast service and / or broadcast service.

[0296] Optionally, the time domain unit: SFN mod sc-mcch-RepetitionPeriod=sc-mcch-Offset+(sc-mcch-Repetition Period)

number

[0297] In an embodiment of the present disclosure, when a network side device transmits control information for n multicast and / or broadcast services every t time domain units within a repetition period of the control information for multicast and / or broadcast services, a terminal can derive the appearance time of the SC-MCCH of the corresponding group based on the ID number of the different groups, so that it only receives at the appearance time of the SC-MCCH and does not need to receive at other times.

[0298] The time domain unit may be a radio frame.

[0299] Optionally, receiving, from the network side device, control information of n multicast services and / or broadcast services transmitted every t time domain units within a repetition period of the control information of the multicast service and / or broadcast service, receiving first information transmitted from the network side device; and receiving control information for n multicast and / or broadcast services at a second transmission time, wherein the first information is used to indicate the second transmission time, and the second transmission time is a transmission time within a corresponding time domain unit of the control information for the n multicast and / or broadcast services.

[0300] In an embodiment of the present disclosure, the terminal further obtains specific time slots and / or symbols that need to be monitored in a radio frame that needs to be monitored. The specific PDCCH monitoring time slot (Monitoring-symbols-PDCCH-within-slot) within a radio frame may indicate the first time symbol in a control resource set (control resource set) within a PDCCH monitoring time slot.

[0301] If one Monitoring-periodicity-PDCCH-slot is 2, then each slot has 8 PDCCH monitoring occasions (MO). Specifically, the RRC can define the starting OFDM time symbol and the specific symbols that need to be monitored. For example, if 001111011100000111101111000, then symbols #2, #3, #4, #5, #7, #8, #9, and #10 need to be monitored. Or, If one Monitoring-periodicity-PDCCH-slot is 2, there are four PDCCH monitoring occasions in each slot, and the symbols in the first slot that need to be monitored are #2, 3, 4, and 5, and the symbols in the second slot that need to be monitored are #7, 8, 9, and 10. Specifically, the RRC can define the starting OFDM time symbol and the specific symbol that needs to be monitored (e.g., 00111100000000000001111000).

[0302] Optionally, the first information is: information for indicating a start time of the second transmission period; information indicating a duration of the second transmission period; and information for indicating a first offset amount, the first offset amount being an offset amount between the second transmission time and a position of the RMSI of an SSB.

[0303] Specifically, a specific monitoring occasion within one radio frame can be determined by defining a start symbol and duration. Here, the duration can be defined in CORESET-time-duration (control resource set duration). For example, the start symbols are #2 and #7, and the duration is four symbols. Alternatively, by defining an offset amount from the position of the SSB RMSI, the position of the SC-MCCH can be derived based on the period and position information of the SSB transmitted by RRC.

[0304] Similarly, this method also applies to reading the information of the SC-PTM by the UE in idle and inactive states.

[0305] As shown in FIG. 10, FIG. 10 is a flowchart of a resource configuration method provided by an embodiment of the present disclosure, which is applied to a network side device and includes the following step 101:

[0306] Step 101: Send setting information to the terminal, the setting information is used to indicate first symbol information and / or second symbol information in one time slot, the first symbol is a symbol for transmitting unicast information, and the second symbol is a symbol for transmitting multicast information and / or broadcast information; the first symbol information is the number of time symbols and / or the number of PRBs occupied by the first symbol; The second symbol information is the number of time symbols and / or the number of PRBs occupied by the second symbol.

[0307] Optionally, the configuration information is further used to indicate that one column of reference signals has been inserted every y symbols in the time slot, and / or the configuration information is further used to indicate that one reference signal has been inserted every x subcarriers in the frequency domain corresponding to the time slot, the reference signals being reference signals used for multicast and / or broadcast.

[0308] The reference signal may be an SSB or a set of SSBs of a cell, or may be an SSB or a set of SSBs shared by a multicast and / or broadcast area, and / or Alternatively, the reference signal may be a unified CSI-RS or a set of CSI-RS provided to terminals in one multicast and / or broadcast group, or may be a shared CSI-RS or a set of CSI-RS for one multicast and / or broadcast area.

[0309] Optionally, information of said reference signal needs to be exchanged between different network nodes; the x and the y are positive integers, the x is determined based on a subcarrier spacing, and the y is determined based on a subcarrier spacing; the unicast information includes at least one of a reference signal, a control signal, and data corresponding to the unicast; the multicast information includes at least one of a reference signal, a control signal, and data corresponding to the multicast; The broadcast information includes at least one of a reference signal, control signaling, and data corresponding to the broadcast.

[0310] Optionally, the x and y are positive integers, and the x is determined based on a subcarrier spacing, and the y is further determined based on measurement accuracy.

[0311] In current MBMS systems, MCCH messages can only be transmitted in Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) subframes. MBSFN subframes are dedicated subframes that can transmit only one data block. A UE can obtain the MCCH message by reading the MBSFN subframe at the corresponding time. Because an MBSFN subframe can only transmit one data block, the data block can be used to transmit the MCCH message or other data other than the MCCH message. However, if the MCCH message cannot occupy all the resources of the MBSFN subframe, other data cannot be transmitted in the MBSFN subframe, resulting in resource waste.

[0312] MBSFN is divided into two types: dedicated carrier MBSFN and unicast mixed carrier MBSFN. The design of the MBSFN reference signal (RS) has its own unique requirements. In a mixed carrier MBSFN system, most resources in one radio frame are generally used for unicast services, with only individual subframes used for MBSFN services. A typical scenario is an isolated MBSFN subframe inserted within consecutive unicast subframes. As a result, a terminal receiving this MBSFN subframe cannot perform interpolated channel estimation between RSs in adjacent subframes, as it does when receiving a unicast signal. Therefore, the MBSFN RS design must be able to support channel estimation within an isolated subframe. In the embodiments of the present disclosure, this disclosure breaks away from the LTE approach of using an MBSFN subframe as the minimum design unit and instead uses an MBSFN time slot as the minimum design unit. This is because 5G NR supports multiple subcarrier spacings, but the lengths of the radio frame and subframe are the same for different subcarrier spacing settings. The radio frame length is 10 ms, and the subframe length is 1 ms. The number of time slots included in each subframe is different. In the case of a normal cyclic prefix (CP), the number of symbols included in each time slot is the same, and all are 14. That is, the number of time symbols included in one NR subframe is different, but the number of time symbols included in each time slot is the same. Of the 14 time symbols, b time symbols are extracted to transmit unicast PDCCH, CSI-RS, and demodulation reference signal (DM-RS), and then 14-b time symbols are used to transmit the reference signal, control channel, and data channel of MBMSFN. b can be determined based on the measurement accuracy requirements, the bandwidth sizes of different frequency bands, and the multicast service load.Furthermore, the positions of the b time symbols may be fixedly defined, for example, as the previous b symbols, the later b symbols, or the middle b symbols, or specific positions may be indicated by signaling. MBSFN-SlotConfig::=SEQUENCE radioframeAllocationPeriod ENUMERATED {n1, n2, n4, n8, n16, n32}, radioframeAllocationOffset INTEGER (0..7), slotAllocation CHOICE { oneFrame BIT STRING (SIZE(6)) of symbolAllocation, fourFrames BIT STRING (SIZE(24) of symbolAllocation) } }-- ASN1STOP

[0313] When a terminal in a neighboring cell measures the neighboring cell, it may measure only the unicast reference signal of these b time symbols.

[0314] The first and second symbols in an MBSFN subframe typically employ CP and reserve unicast pilots, which can be used to transmit channels such as PDCCH, Physical Control Format Indicator Channel (PCFICH), and Physical Hybrid ARQ Indicator Channel (PHICH). The other symbols in the subframe are used for MBSFN signal transmission.

[0315] Meanwhile, according to a specific subcarrier spacing, one MBSFN reference signal (RS) is inserted into every x subcarriers in the frequency domain, and one row of RSs is inserted into every y OFDM symbols in the time domain.

[0316] Due to differences in measurement accuracy, SCS, and PRB width, the RS insertion intervals for different SCSs are different. The wider the SCS interval, the lower the RS density. The subcarrier reference signal density is also taken into account for time symbols. The RS can play a role in channel demodulation for 5G MBMS.

[0317] The integration of multiple cells significantly increases the number of multipaths, making the frequency selectivity of MBSFN signals much greater than that of unicast signals, necessitating a greater RS ​​frequency domain density. However, the time symbol durations of different subcarrier spacings are also different.

[0318] Therefore, x, y, and b all correspond to the numerical values ​​of the subcarrier spacing. The correspondence may be determined in the form of a table; Or configured by RRC message / MAC CE / PDCCH signaling, Or, after defining multiple correspondence tables and corresponding index numbers, configure the index numbers through RRC message / MAC CE / PDCCH signaling; Alternatively, multiple correspondence tables and corresponding index numbers are configured through RRC signaling, and then the index numbers are configured through MAC CE / PDCCH signaling.

[0319] As shown in FIG. 11, FIG. 11 is a flowchart of a resource configuration method provided by an embodiment of the present disclosure, which is applied to a terminal and includes the following step 111:

[0320] Step 111: Receive the setting information transmitted from the network side device; The configuration information transmitted to the terminal is used to indicate first symbol information and / or second symbol information in one time slot, the first symbol being a symbol for transmitting unicast information, and the second symbol being a symbol for transmitting multicast information and / or broadcast information; the first symbol information is the number of time symbols and / or the number of PRBs occupied by the first symbol; The second symbol information is the number of time symbols and / or the number of PRBs occupied by the second symbol.

[0321] Optionally, the configuration information is further used to indicate that one column of reference signals has been inserted every y symbols in the time slot, and / or the configuration information is further used to indicate that one reference signal has been inserted every x subcarriers in the frequency domain corresponding to the time slot, the reference signals being reference signals used for multicast and / or broadcast.

[0322] Alternatively, the reference signal may be an SSB or a set of SSBs of a cell, or may be an SSB or a set of SSBs shared by a multicast and / or broadcast area, and / or Alternatively, the reference signal may be a unified CSI-RS or a set of CSI-RS provided to terminals in one multicast and / or broadcast group, or may be a shared CSI-RS or a set of CSI-RS for one multicast and / or broadcast area.

[0323] Optionally, information of said reference signal needs to be exchanged between different network nodes; the x and the y are positive integers, the x is determined based on a subcarrier spacing, and the y is determined based on a subcarrier spacing; the unicast information includes at least one of a reference signal, a control signal, and data corresponding to the unicast; the multicast information includes at least one of a reference signal, a control signal, and data corresponding to the multicast; The broadcast information includes at least one of a reference signal, control signaling, and data corresponding to the broadcast.

[0324] Optionally, the x and y are positive integers, and the x is determined based on a subcarrier spacing, and the y is further determined based on measurement accuracy.

[0325] As shown in FIG. 12, FIG. 12 is a flowchart of an information measurement method provided by an embodiment of the present disclosure, which is applied to a terminal and includes the following step 121:

[0326] Step 121: Receive resource setting information transmitted from a network-side device, which is resource setting information for a multicast service and / or a broadcast service of a neighboring cell.

[0327] Step 122: Measure or not measure the resource corresponding to the resource setting information.

[0328] In an embodiment of the present disclosure, MBSFN configuration information is exchanged between base stations and / or cells, or the base stations and / or cells obtain MBSFN configuration information of neighboring cells from a network management unit. Then, the base stations and / or cells notify the terminal of the MBSFN configuration information of neighboring cells through signaling, thereby eliminating the need to transmit unicast signals and channel information in MBSFN unit resource blocks. The terminal ignores these MBSFN resources when measuring the signal quality of neighboring cells, or only measures the MBSFN resources if the terminal has an MBMS service.

[0329] Optionally, the step of measuring or not measuring a resource corresponding to the resource setting information includes: If the terminal only has a unicast service, not measuring the resource corresponding to the resource configuration information; If the terminal only has a multicast service and / or a broadcast service, measuring resources corresponding to the resource configuration information; or When the terminal has both a unicast service and a multicast service and / or a broadcast service, measuring resources corresponding to the resource configuration information.

[0330] In the embodiment of the present disclosure, the terminal can measure the corresponding MBSFN resource for a specific MBMS service. If the UE has a unicast service, the UE will ignore this MBSFN resource when measuring the signal quality of neighboring cells. If the UE has not only a unicast service but also an MBMS service, it will report measurement information for the two types of resources separately.

[0331] A unicast service is set on a dedicated activated BWP, and a multicast service is set on the initial BWP or on a BWP that has an association relationship with the initial BWP. A system message indicates the association relationship between this BWP that transmits the multicast service and the initial BWP, such as the offset relationship on the corset and search space.

[0332] As shown in FIG. 13, FIG. 13 is a structural schematic diagram of a network side device provided by an embodiment of the present disclosure, and the network side device 130 includes: a first DCI transmission module 131 configured to transmit a first DCI scrambled by a first RNTI to a terminal, the first DCI being used to indicate whether control information of one multicast service and / or broadcast service has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0333] Optionally, the configuration information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0334] Optionally, the first DCI is that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed.

[0335] Optionally, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI may further include: that the configuration information of the multicast service and / or broadcast service has changed; The transmission mode of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode (i.e., an MBMS transmission mode); The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0336] Optionally, the first DCI is that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0337] Optionally, the network side device further comprises: the first DCI includes information for indicating that control information of a multicast service and / or a broadcast service has changed; and / or The change information transmitting module is configured to transmit change information of the control information of the multicast service and / or broadcast service when the control information of the multicast service and / or broadcast service is accompanied by resources of change information.

[0338] Optionally, the network side device further comprises: a first broadcast module configured to broadcast control information for each multicast and / or broadcast service of the plurality of multicast and / or broadcast services; or a second broadcast module configured to broadcast control information of a first multicast service and / or broadcast service among control information of a plurality of multicast services and / or broadcast services, wherein control information of other multicast services and / or broadcast services among the control information of the plurality of multicast services and / or broadcast services is the same as the control information of the first multicast service and / or broadcast service; The control information includes at least one of a repetition period, an offset amount, a starting subframe, and a modification period.

[0339] As shown in FIG. 14, FIG. 14 is a structural schematic diagram of a network side device provided by an embodiment of the present disclosure, and the network side device 140 includes: a second DCI transmission module 141 configured to transmit a second DCI scrambled with a second RNTI to a terminal, the second DCI being used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0340] Optionally, the configuration information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0341] Optionally, the first DCI comprises: that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed.

[0342] Optionally, the set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in a cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0343] Optionally, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0344] Optionally, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI may further include: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set. Optionally, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0345] Optionally, the second DCI is It is used to indicate the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services. Optionally, the second DCI further comprises: The configuration information of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set has changed; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service in the set of multicast and / or broadcast services for which control information of the multicast and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services; and The CSI feedback control section 100 is used to indicate at least one of turning on or off CSI feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services.

[0346] Optionally, the network side device further comprises: the first DCI includes information for indicating that control information of a multicast service and / or a broadcast service has changed; and / or The change information transmitting module is configured to transmit change information of the control information of the multicast service and / or broadcast service when the control information of the multicast service and / or broadcast service is accompanied by resources of change information.

[0347] Optionally, the network side device further comprises: a first broadcast module configured to broadcast control information for each multicast and / or broadcast service of the plurality of multicast and / or broadcast services; or a second broadcast module configured to broadcast control information of a first multicast service and / or broadcast service among control information of a plurality of multicast services and / or broadcast services, wherein control information of other multicast services and / or broadcast services among the control information of the plurality of multicast services and / or broadcast services is the same as the control information of the first multicast service and / or broadcast service; The control information includes at least one of a repetition period, an offset amount, a starting subframe, and a modification period.

[0348] As shown in FIG. 15, FIG. 15 is a structural schematic diagram of a terminal provided by an embodiment of the present disclosure, and the terminal 150 includes: a first DCI receiving module 151 configured to receive a first DCI scrambled with a first RNTI transmitted from a network side device, the first DCI being used to indicate whether control information of one multicast service and / or broadcast service has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0349] Optionally, the configuration information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0350] Optionally, the first DCI is that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed.

[0351] Optionally, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI may further include: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0352] Optionally, the first DCI is that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0353] Optionally, the terminal further comprises: The first DCI includes information for indicating that control information of a multicast service and / or a broadcast service is changed; and / or The change information receiving module is configured to receive change information of the control information of the multicast service and / or broadcast service when the control information of the multicast service and / or broadcast service is accompanied by a resource of change information.

[0354] As shown in FIG. 16, FIG. 16 is a structural schematic diagram of a terminal provided by an embodiment of the present disclosure, and the terminal 160 includes: a second DCI receiving module 161 configured to receive a second DCI scrambled with a second RNTI transmitted from a network side device, the second DCI being used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0355] Optionally, the configuration information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0356] Optionally, the set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in a cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0357] Optionally, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0358] Optionally, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI may further include: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0359] Optionally, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0360] Optionally, the second DCI is It is used to indicate the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services.

[0361] Optionally, the second DCI further comprises: The configuration information of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set has changed; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service in the set of multicast and / or broadcast services for which control information of the multicast and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services; and The CSI feedback control section 100 is used to indicate at least one of turning on or off CSI feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services.

[0362] Optionally, the terminal further comprises: The second DCI includes information for indicating that control information of a multicast service and / or a broadcast service is changed; and / or The change information receiving module is configured to receive change information of the control information of the multicast service and / or broadcast service when the control information of the multicast service and / or broadcast service is accompanied by a resource of change information.

[0363] As shown in FIG. 17, FIG. 17 is a structural schematic diagram of a network-side device provided by an embodiment of the present disclosure, and the network-side device 170 includes: a control information setting module 171 configured to set control information of a set of multicast services and / or broadcast services for m multicast services and / or broadcast services; a cell in which the m multicast and / or broadcast services are located has n multicast and / or broadcast services within a multicast and / or broadcast area; The n multicast services and / or broadcast services are configured with a total of k sets of multicast service and / or broadcast service control information, m, n, and k are natural numbers of 1 or more, m is equal to or less than n, and k is equal to or less than n.

[0364] Optionally, the network side device further comprises: a setting module configured to set at least one of a repetition period, a modification period, and a starting offset for each transmission of control information of the k sets of multicast and / or broadcast services; The repeat periods of the control information of the k sets of multicast and / or broadcast services may be the same or different in at least one of modification period and starting offset.

[0365] Optionally, the network side device further comprises: and a control information transmitting module configured to transmit control information of n multicast and / or broadcast services to a terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0366] Optionally, the network side device further comprises: and a first information transmitting module configured to transmit first information to a terminal, the first information being used to indicate first transmission times, the first transmission times being transmission times within corresponding time domain units of control information of the n multicast and / or broadcast services.

[0367] Optionally, the first information is: information for indicating a start time of the first transmission period; information indicating a duration of the first transmission time; and information for indicating a first offset amount, the first offset amount being an offset amount between the first transmission time and a position of the RMSI of an SSB.

[0368] As shown in FIG. 18, FIG. 18 is a structural schematic diagram of a terminal provided by an embodiment of the present disclosure, and the terminal 180 includes: a receiving occasion determination module 181 configured to determine a monitoring occasion of a physical downlink control channel PDCCH for one or more multicast messages; and an information receiving module 182 configured to receive multicast information at monitoring occasions of a physical downlink control channel PDCCH for multicast messages; One multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in the PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is DCI for scheduling multicast services by the network; DCI for scheduling multicast service configuration information by the network; DCI for information on the control channel of the multicast service, DCI for scheduling information on a control channel for multicast services by the network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of the control channel of the multicast service by the network; DCI of the control channel modification information of the multicast service, and DCI of scheduling information of modification information of control channel of multicast service.

[0369] Optionally, the receiving occasion determination module is configured to determine a monitoring occasion of a PDCCH of a multicast message based on a search space of the multicast message or a search space set of the multicast message; The search space for multicast messages is A method in which a UE reads information of an Nth type PDCCH common search space set for setting a search space of a multicast message from a PDCCH common configuration configured by a network using an RRC message, the common search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; A method in which a UE reads a search space having an identifier of a common type from a PDCCH dedicated configuration configured by an RRC message, the search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; If the UE does not find the information of the Nth PDCCH common search space set for the multicast message search space configuration by the RRC message, the correlation between the PDCCH monitoring occasion and the SSB block index for the Nth PDCCH common search space set is the same as the correlation between the PDCCH monitoring occasion and the PDCCH common search space of type 0; by table lookup, determining the number of CCE aggregation levels and PDCCH candidates for each CCE aggregation level in the common search space set of the Nth type PDCCH; Information on a common search space set of the Nth type PDCCH and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for monitoring an occasion of a PDCCH for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring the PDCCH for multicast messages; Fourth indication information indicating monitoring time slots and / or monitoring time symbols used for monitoring occasions of the PDCCH of the multicast message in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for monitoring the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH of the multicast message; and and seventh indication information used to indicate the index of the control resource set associated with this search space.

[0370] Alternatively, one or more PDCCH monitoring occasions for a multicast message constitute one multicast message occasion.

[0371] Optionally, further The radio frame determination module is configured to determine a multicast scheduling radio frame, where the MF is a system frame including one or more MOs or origins of MOs.

[0372] Optionally, further A beam selection module configured to select one or more beams for receiving multicast scheduling information is included.

[0373] Alternatively, the occasion of one multicast message is a PDCCH monitoring occasion of Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell.

[0374] Optionally, one multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; The Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer.

[0375] As shown in FIG. 18a, FIG. 18a is a structural schematic diagram of a network side device provided by an embodiment of the present disclosure, and the network side device 1800 includes: a multicast information transmitting module 1801 configured to transmit multicast information on monitoring occasions of a physical downlink control channel PDCCH for one or more multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in the PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is DCI for scheduling multicast services by the network; DCI for scheduling multicast service configuration information by the network; DCI for information on the control channel of the multicast service, DCI for scheduling information on a control channel for multicast services by the network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of the control channel of the multicast service by the network; DCI of the control channel modification information of the multicast service, and DCI of scheduling information of modification information of control channel of multicast service.

[0376] Optionally, the multicast information transmitting module: Associating the PDCCH monitoring occasion of the multicast message with a corresponding multicast message search space or a multicast message search space set; The search space for multicast messages is defined as A method for configuring a common search space set of an Nth type PDCCH for configuring a search space of a multicast message in a PDCCH common configuration configured by a radio resource control (RRC) message, wherein the common search space is used for a DCI format scrambled by a cyclic redundancy check code (CRC) by a multicast-RNTI in a primary cell; and a method for configuring by at least one of the following: a method for configuring by using an identifier in a PDCCH dedicated configuration configured by an RRC message as a common type search space, wherein the search space is used for a DCI format in which CRC is scrambled by a multicast-RNTI in a primary cell; Information on a common search space set of the Nth type PDCCH and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for monitoring an occasion of a PDCCH for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring the PDCCH for multicast messages; Fourth indication information indicating monitoring time slots and / or monitoring time symbols used for monitoring occasions of the PDCCH of the multicast message in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for monitoring the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH of the multicast message; and and seventh indication information used to indicate the index of the control resource set associated with this search space.

[0377] Alternatively, one or more PDCCH monitoring occasions for a multicast message constitute one multicast message occasion.

[0378] Optionally, further The multicast scheduling radio frame determination module is configured to determine a multicast scheduling radio frame, where the MF is a system frame including one or more MOs or origins of MOs.

[0379] Optionally, further A beam selection module configured to select one or more beams for transmitting multicast scheduling information is included.

[0380] Alternatively, the occasion of one multicast message is a PDCCH monitoring occasion of Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell.

[0381] Optionally, one multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; The Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer.

[0382] As shown in FIG. 19, FIG. 19 is a structural schematic diagram of a network side device provided by an embodiment of the present disclosure, and the network side device 190 includes: and a control information transmitting module 191 configured to transmit control information of n multicast and / or broadcast services to a terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0383] Optionally, the network side device further comprises: and a first information transmitting module configured to transmit first information to a terminal, the first information being used to indicate first transmission times, the first transmission times being transmission times within corresponding time domain units of control information of the n multicast and / or broadcast services.

[0384] Optionally, the first information is: information for indicating a start time of the first transmission period; information indicating a duration of the first transmission time; and information for indicating a first offset amount, the first offset amount being an offset amount between the first transmission time and a position of the RMSI of an SSB.

[0385] As shown in FIG. 20, FIG. 20 is a structural schematic diagram of a terminal provided by an embodiment of the present disclosure, and the terminal 200 includes: The control information receiving module 201 is configured to receive control information of n multicast and / or broadcast services transmitted every t time domain units within a repetition period of the control information of the multicast and / or broadcast services from a network side device, where n and t are positive integers.

[0386] Optionally, the control information receiving module is configured to obtain time domain units corresponding to control information of multicast services and / or broadcast services in the recurrence period, and monitor the time domain units for the control information of the corresponding multicast services and / or broadcast services.

[0387] Optionally, the time domain unit: SFN mod sc-mcch-RepetitionPeriod=sc-mcch-Offset+(sc-mcch-Repetition Period)

number

[0388] Optionally, the control information receiving module receives first information transmitted from the network side device; The first information is configured to receive control information of n multicast and / or broadcast services at a second transmission time, the first information being used to indicate the second transmission time, and the second transmission time being a transmission time within a corresponding time domain unit of the control information of the n multicast and / or broadcast services.

[0389] Optionally, the first information is: information for indicating a start time of the second transmission period; information indicating a duration of the second transmission period; and information for indicating a first offset amount, the first offset amount being an offset amount between the second transmission time and a position of the RMSI of an SSB.

[0390] As shown in FIG. 21, FIG. 21 is a structural schematic diagram of a network-side device provided by an embodiment of the present disclosure, and the network-side device 210 includes: a setting information sending module 211 configured to send setting information to the terminal; The configuration information transmitted to the terminal is used to indicate first symbol information and / or second symbol information in one time slot, the first symbol being a symbol for transmitting unicast information, and the second symbol being a symbol for transmitting multicast information and / or broadcast information; the first symbol information is the number of time symbols and / or the number of PRBs occupied by the first symbol; The second symbol information is the number of time symbols and / or the number of PRBs occupied by the second symbol.

[0391] Optionally, the configuration information is further used to indicate that one column of reference signals has been inserted every y symbols in the time slot, and / or the configuration information is further used to indicate that one reference signal has been inserted every x subcarriers in the frequency domain corresponding to the time slot, the reference signals being reference signals used for multicast and / or broadcast.

[0392] Alternatively, the reference signal may be an SSB or a set of SSBs of a cell, or may be an SSB or a set of SSBs shared by a multicast and / or broadcast area, and / or Alternatively, the reference signal may be a unified CSI-RS or a set of CSI-RS provided to terminals in one multicast and / or broadcast group, or may be a shared CSI-RS or a set of CSI-RS for one multicast and / or broadcast area.

[0393] Optionally, information of said reference signal needs to be exchanged between different network nodes; the x and the y are positive integers, the x is determined based on a subcarrier spacing, and the y is determined based on a subcarrier spacing; the unicast information includes at least one of a reference signal, a control signal, and data corresponding to the unicast; the multicast information includes at least one of a reference signal, a control signal, and data corresponding to the multicast; The broadcast information includes at least one of a reference signal, control signaling, and data corresponding to the broadcast.

[0394] Optionally, the x and y are positive integers, and the x is determined based on a subcarrier spacing, and the y is further determined based on measurement accuracy.

[0395] An embodiment of the present disclosure further provides a terminal, the terminal comprising: a setting information receiving module configured to receive setting information transmitted from a network side device; The configuration information transmitted to the terminal is used to indicate first symbol information and / or second symbol information in one time slot, the first symbol being a symbol for transmitting unicast information, and the second symbol being a symbol for transmitting multicast information and / or broadcast information; the first symbol information is the number of time symbols and / or the number of PRBs occupied by the first symbol; The second symbol information is the number of time symbols and / or the number of PRBs occupied by the second symbol.

[0396] Optionally, the configuration information is further used to indicate that one column of reference signals has been inserted every y symbols in the time slot, and / or the configuration information is further used to indicate that one reference signal has been inserted every x subcarriers in the frequency domain corresponding to the time slot, the reference signals being reference signals used for multicast and / or broadcast.

[0397] Alternatively, the reference signal may be an SSB or a set of SSBs of a cell, or may be an SSB or a set of SSBs shared by a multicast and / or broadcast area, and / or Alternatively, the reference signal may be a unified CSI-RS or a set of CSI-RS provided to terminals in one multicast and / or broadcast group, or may be a shared CSI-RS or a set of CSI-RS for one multicast and / or broadcast area.

[0398] Optionally, information of said reference signal needs to be exchanged between different network nodes; the x and the y are positive integers, the x is determined based on a subcarrier spacing, and the y is determined based on a subcarrier spacing; the unicast information includes at least one of a reference signal, a control signal, and data corresponding to the unicast; the multicast information includes at least one of a reference signal, a control signal, and data corresponding to the multicast; The broadcast information includes at least one of a reference signal, control signaling, and data corresponding to the broadcast.

[0399] Optionally, the x and y are positive integers, and the x is determined based on a subcarrier spacing, and the y is further determined based on measurement accuracy.

[0400] As shown in FIG. 22, FIG. 22 is a structural schematic diagram of a terminal provided by an embodiment of the present disclosure, and the terminal 220 includes: a resource setting information receiving module 221 configured to receive resource setting information transmitted from a network side device, the resource setting information being resource setting information of a multicast service and / or a broadcast service of a neighboring cell; and a measurement module configured to measure or not measure a resource corresponding to the resource setting information.

[0401] Optionally, the measurement module does not measure the resource corresponding to the resource configuration information when the terminal only has a unicast service; If the terminal only has a multicast service and / or a broadcast service, measure resources corresponding to the resource configuration information; or When the terminal has both a unicast service and a multicast service and / or a broadcast service, the terminal is configured to measure resources corresponding to the resource configuration information.

[0402] As shown in FIG. 23, FIG. 23 is a structural schematic diagram of a network-side device provided by an embodiment of the present disclosure, where the network-side device 230 includes: a transceiver 231 and a processor 232; the transceiver is configured to transmit a first DCI scrambled with a first RNTI to a terminal, the first DCI being used to indicate whether control information of one multicast and / or broadcast service has been updated or to indicate update-related information; or the transceiver is configured to transmit a second DCI scrambled with a second RNTI to a terminal, the second DCI being used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0403] Optionally, the configuration information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0404] Optionally, the first DCI is that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed.

[0405] Optionally, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI may further include: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0406] Optionally, the first DCI is that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0407] Optionally, the set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in a cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0408] Optionally, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0409] Optionally, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI may further include: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0410] Optionally, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0411] Optionally, the second DCI is It is used to indicate the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services. Optionally, the second DCI further comprises: The configuration information of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set has changed; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service in the set of multicast and / or broadcast services for which control information of the multicast and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services; and The CSI feedback control section 100 is used to indicate at least one of turning on or off CSI feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services.

[0412] Alternatively, the transceiver may be configured to: When the control information of the multicast service and / or the broadcast service is accompanied by a resource of change information, the change information of the control information of the multicast service and / or the broadcast service is transmitted.

[0413] Alternatively, the transceiver broadcasts control information for each multicast and / or broadcast service of a plurality of multicast and / or broadcast services, or configured to broadcast control information for a first multicast service and / or broadcast service among control information for a plurality of multicast services and / or broadcast services, wherein control information for other multicast services and / or broadcast services among the control information for the plurality of multicast services and / or broadcast services is the same as the control information for the first multicast service and / or broadcast service; The control information includes at least one of a repetition period, an offset amount, a starting subframe, and a modification period.

[0414] As shown in FIG. 24, FIG. 24 is a structural schematic diagram of a terminal provided by an embodiment of the present disclosure, where the terminal 240 includes: a transceiver 241 and a processor 242; The transceiver is configured to receive a first DCI scrambled with a first RNTI transmitted from a network side device, and the first DCI is used to indicate whether control information of one multicast service and / or broadcast service has been updated or to indicate update-related information; or the transceiver is configured to receive a second DCI scrambled with a second RNTI transmitted from a network side device, the second DCI being used to indicate whether control information of one multicast service and / or broadcast service set has been updated or to indicate update-related information; The control information includes configuration information for multicast and / or broadcast services.

[0415] Optionally, the configuration information of the one multicast service and / or broadcast service includes: TMGI list, Session ID corresponding to the TMGI in the list of TMGIs, a G-RNTI corresponding to a TMGI in the list of TMGIs; BWPs corresponding to TMGIs in the list of TMGIs, the subcarrier spacing corresponding to the TMGI in the list of TMGIs; logical channels and / or logical channel groups corresponding to the TMGIs in the list of TMGIs; DRX settings corresponding to TMGIs in the list of TMGIs; An uplink resource configuration for HARQ feedback corresponding to a TMGI in the list of TMGIs; and The uplink resource configuration of the CSI report corresponding to the TMGI in the list of TMGIs is included.

[0416] Optionally, the first DCI is that control information for multicast and / or broadcast services has changed; whether the control information of the multicast and / or broadcast service has changed; Control information of the multicast and / or broadcast service that has changed; the type of control information of the multicast and / or broadcast service that has changed; and and reading resource information of the control information of the multicast and / or broadcast service that has changed.

[0417] Optionally, when the first DCI is used to indicate that control information of a multicast service and / or a broadcast service has changed, the first DCI may further include: that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0418] Optionally, the first DCI is that the configuration information of the multicast service and / or broadcast service has changed; The transmission method of the multicast service and / or broadcast service is changed from a single-cell single-point-to-multipoint transmission method to a multi-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a multi-cell single-point-to-multipoint transmission method to a single-cell single-point-to-multipoint transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-multipoint transmission method to a single-point-to-single-point transmission method; The transmission method of the multicast service and / or broadcast service is changed from a single-point-to-single-point transmission method to a single-point-to-multipoint transmission method; a multicast or broadcast service in which control information of the multicast service and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the multicast and / or broadcast service; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service.

[0419] Optionally, the set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services in a cell; and / or The one set of multicast and / or broadcast services is a set of some or all multicast and / or broadcast services within one multicast and / or broadcast area.

[0420] Optionally, the second DCI is that the control information of the one multicast service and / or broadcast service set has changed; Whether the control information of the one multicast service and / or broadcast service set has changed; the control information of the one multicast service and / or broadcast service set that has changed; the type of control information of the one multicast service and / or broadcast service set that has changed; and and reading resource information of the control information of the one multicast service and / or broadcast service set that has changed.

[0421] Optionally, when the second DCI is used to indicate that control information of the one multicast service and / or broadcast service set has changed, the second DCI may further include: The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0422] Optionally, the second DCI is The configuration information of the multicast service and / or broadcast service set has changed; The transmission mode of the multicast service and / or broadcast service set is changed from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; The transmission mode of the multicast service and / or broadcast service set is changed from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service for which control information of the multicast service and / or broadcast service set has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for the set of multicast and / or broadcast services; and It is used to indicate at least one of turning on or turning off CSI feedback for the multicast service and / or broadcast service set.

[0423] Optionally, the second DCI is It is used to indicate the identity of the multicast and / or broadcast service that has changed in the set of multicast and / or broadcast services. Optionally, the second DCI further comprises: The configuration information of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set has changed; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a single-cell single-point-to-multipoint transmission mode to a multi-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the multicast service and / or broadcast service set from a multi-cell single-point-to-multipoint transmission mode to a single-cell single-point-to-multipoint transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-multipoint transmission mode to a single-point-to-single-point transmission mode; changing the transmission mode of the changed multicast service and / or broadcast service in the set of multicast services and / or broadcast services from a single-point-to-single-point transmission mode to a single-point-to-multipoint transmission mode; a multicast or broadcast service in the set of multicast and / or broadcast services for which control information of the multicast and / or broadcast service has changed; Adding a new group of multicast and / or broadcast services; Deleting an existing group of multicast and / or broadcast services; updating an existing group of multicast and / or broadcast services; turning off or on HARQ feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services; and The CSI feedback control section 100 is used to indicate at least one of turning on or off CSI feedback for some of the multicast and / or broadcast services in the set of multicast and / or broadcast services.

[0424] Alternatively, the transceiver may be configured to: When the control information of the multicast service and / or broadcast service is accompanied by a resource of change information, the change information of the control information of the multicast service and / or broadcast service is received.

[0425] As shown in FIG. 25, FIG. 25 is a structural schematic diagram of a network-side device provided by an embodiment of the present disclosure, where the network-side device 250 includes: a transceiver 251 and a processor 252; the processor is configured to set a set of multicast and / or broadcast service control information for the m multicast and / or broadcast services; a cell in which the m multicast and / or broadcast services are located has n multicast and / or broadcast services within a multicast and / or broadcast area; The n multicast services and / or broadcast services are configured with a total of k sets of multicast service and / or broadcast service control information, m, n, and k are natural numbers of 1 or more, m is equal to or less than n, and k is equal to or less than n.

[0426] Optionally, the processor is further configured to set at least one of a repetition period, a modification period, and a starting offset for each transmission of the control information of the k sets of multicast and / or broadcast services; The repeat periods of the control information of the k sets of multicast and / or broadcast services may be the same or different in at least one of modification period and starting offset.

[0427] Optionally, the transceiver is configured to transmit control information of n multicast and / or broadcast services to the terminal every t time domain units within a repetition period of the control information of the multicast and / or broadcast services, where n and t are positive integers.

[0428] Optionally, the transceiver is further configured to transmit first information to a terminal, the first information being used to indicate first transmission times, the first transmission times being transmission times within corresponding time domain units of control information of ...

Claims

1. An information receiving method applied to a terminal, comprising: determining monitoring occasions of a Physical Downlink Control Channel (PDCCH) for one or more multicast messages and receiving multicast information at the monitoring occasions of the Physical Downlink Control Channel (PDCCH) for the multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in a PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is a DCI for scheduling multicast services by a network; DCI for scheduling multicast service configuration information by the network; DCI of information on the control channel of the multicast service; DCI for scheduling information of a control channel of a multicast service by a network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of a control channel of a multicast service by a network; DCI of the modification information of the control channel of the multicast service, and DCI for scheduling information; DCI for modification information for a control channel of a multicast service.

2. Determining a monitoring occasion of a physical downlink control channel (PDCCH) for the one or more multicast messages includes: Determining a PDCCH monitoring occasion for the multicast message based on a search space for the multicast message or a search space set for the multicast message; The search space for multicast messages is defined as A method in which a terminal UE reads information of an Nth type PDCCH common search space set for setting a search space of a multicast message from a PDCCH common configuration configured by a network using a radio resource control (RRC) message, the common search space being used for a DCI format in which a cyclic redundancy check code (CRC) is scrambled by a multicast-RNTI in a primary cell; A method in which a UE reads a search space having an identifier of a common type from a PDCCH dedicated configuration configured by an RRC message, the search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; If the UE does not find the information of the Nth PDCCH common search space set for the multicast message search space configuration by the RRC message, the association relationship between the PDCCH monitoring occasion and the SSB block index for the Nth PDCCH common search space set is the same as the association relationship between the PDCCH monitoring occasion and the PDCCH common search space of type 0; and determining by at least one of the following methods: finding the CCE aggregation levels in the common search space set of the Nth type PDCCH and the number of PDCCH candidates for each CCE aggregation level by table lookup; Information on a common search space set of a type N PDCCH and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for a PDCCH monitoring occasion for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring occasions of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring an occasion of the PDCCH for a multicast message; fourth indication information indicating monitoring time slots and / or monitoring time symbols to be used for monitoring occasions of the PDCCH for multicast messages in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for a monitoring occasion of the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH for multicast messages; and and seventh indication information used to indicate an index of a control resource set associated with the search space.

3. 2. The method of claim 1, wherein the PDCCH monitoring occasions for one or more multicast messages constitute one multicast message occasion.

4. The method further comprises:

2. The method of claim 1, further comprising determining a multicast scheduling radio frame MF, wherein the MF is a system frame containing an occasion MO or an origin of an MO of one or more multicast messages.

5. The method comprises:

2. The method of claim 1, comprising the step of selecting one or more beams for receiving multicast scheduling information.

6. 2. The information receiving method according to claim 1, wherein the occasion of one multicast message is the PDCCH monitoring occasion of Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell.

7. One multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; 2. The method of claim 1, wherein the Zth PDCCH monitoring occasion in the occasion of a multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer.

8. An information transmission method applied to a network side device, transmitting multicast information in monitoring occasions of a Physical Downlink Control Channel (PDCCH) of one or more multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in a PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is a DCI for scheduling multicast services by a network; DCI for scheduling multicast service configuration information by the network; DCI of information on the control channel of the multicast service; DCI for scheduling information of a control channel of a multicast service by a network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of a control channel of a multicast service by a network; DCI of the modification information of the control channel of the multicast service, and DCI for scheduling information; DCI for modification information for a control channel of a multicast service.

9. The step of transmitting multicast information in monitoring occasions of a Physical Downlink Control Channel (PDCCH) of the one or more multicast messages comprises: Associating the PDCCH monitoring occasion of the multicast message with a corresponding multicast message search space or a multicast message search space set; The search space for multicast messages is defined as A method for configuring a common search space set of a PDCCH of type N for configuring a search space of a multicast message in a PDCCH common configuration configured by a radio resource control (RRC) message, wherein the common search space is used for a DCI format whose cyclic redundancy check code (CRC) is scrambled by a multicast-RNTI in a primary cell; and a method for configuring by using an identifier in a PDCCH dedicated configuration configured by an RRC message as a common type search space, the search space being used for a DCI format whose CRC is scrambled by a multicast-RNTI in a primary cell; Information on a common search space set of a type N PDCCH and / or information on a search space identified as a common type, Search space number, First indication information used to indicate a first time symbol in a control resource set in one slot used for a PDCCH monitoring occasion for a multicast message; Second indication information used to indicate a monitoring period and a time offset amount used for monitoring an occasion of a PDCCH for a multicast message; Third indication information used to indicate a start symbol and / or a duration in one monitoring period used for monitoring an occasion of the PDCCH for a multicast message; fourth indication information indicating monitoring time slots and / or monitoring time symbols to be used for monitoring occasions of the PDCCH for multicast messages in the form of a bitmap; Fifth indication information indicating a monitoring time symbol in one time slot used for a monitoring occasion of the PDCCH of the multicast message in the form of a bitmap; Sixth indication information used to indicate the start symbol and / or duration of one time slot used for monitoring the PDCCH for multicast messages; and and seventh indication information used to indicate an index of a control resource set associated with the search space.

10. 9. The method of claim 8, wherein the PDCCH monitoring occasions for one or more multicast messages constitute one multicast message occasion.

11. The method further comprises:

9. The information transmission method according to claim 8, comprising a step of determining a multicast scheduling radio frame MF, wherein the MF is a system frame containing an occasion MO or an origin of an MO of one or more multicast messages.

12. 9. The information transmission method of claim 8, comprising the step of selecting one or more beams for transmitting multicast scheduling information.

13. The information transmission method according to claim 8, wherein the occasion of one multicast message is a PDCCH monitoring occasion of Y multicast messages, where Y is determined based on the number of SSBs actually transmitted in the cell.

14. One multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; 9. The information transmission method of claim 8, wherein the Zth PDCCH monitoring occasion in the occasion of the multicast message corresponds to the Zth SSB to be transmitted, where Z is a positive integer.

15. On the device, a reception occasion determination module configured to determine a monitoring occasion of a physical downlink control channel (PDCCH) for one or more multicast messages; and an information receiving module configured to receive multicast information at a monitoring occasion of a physical downlink control channel (PDCCH) for a multicast message; One multicast message occasion is a PDCCH monitoring occasion for one group of multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in a PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is a DCI for scheduling multicast services by a network; DCI for scheduling multicast service configuration information by the network; DCI of information on the control channel of the multicast service; DCI for scheduling information of a control channel of a multicast service by a network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of a control channel of a multicast service by a network; DCI of the modification information of the control channel of the multicast service, and DCI of scheduling information of control channel modification information of a multicast service.

16. In the network device, a multicast information transmitting module configured to transmit multicast information on monitoring occasions of a physical downlink control channel (PDCCH) for one or more multicast messages; A PDCCH monitoring occasion of one multicast message includes at least one time slot; Each time slot included in a PDCCH monitoring occasion of one multicast message includes at least one time symbol; The multicast information is a DCI for scheduling multicast services by a network; DCI for scheduling multicast service configuration information by the network; DCI of information on the control channel of the multicast service; DCI for scheduling information of a control channel of a multicast service by a network; DCI of scheduling information of control channel information of multicast service; DCI for scheduling modification information of a control channel of a multicast service by a network; DCI of the modification information of the control channel of the multicast service, and DCI of scheduling information of control channel modification information of multicast service.

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