WO2023010287A1

WO2023010287A1 - Method and apparatus for notifying information change, terminal device, and network device

Info

Publication number: WO2023010287A1
Application number: PCT/CN2021/110376
Authority: WO
Inventors: 王淑坤
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2023-02-09
Also published as: CN117441381A

Abstract

Embodiments of the present application provide a method and apparatus for notifying information change, a terminal device, and a network device, the method comprising: a terminal device receives first signaling, wherein the first signaling carries first indication information, and the first indication information is used to indicate at least one among the following: whether the terminal device monitors MCCH change notification DCI; whether the terminal device monitors the MCCH DCI; and whether the terminal device reacquires the MCCH signaling, the MCCH change notification DCI being used to notify an MCCH change, the MCCH DCI being used to schedule an MCCH, the MCCH being used to carry the MCCH signaling, and the MCCH signaling comprising one or more multi-MBS configurations.

Description

A method and device for notifying information change, terminal equipment, and network equipment

technical field

The embodiment of the present application relates to the technical field of mobile communication, and specifically relates to a method and device for notifying information change, a terminal device, and a network device.

Background technique

The MBS configuration of all Multimedia Broadcast Service (MBS) services broadcast by a cell is configured through a Multicast Control Channel (Multicast Control Channel, MCCH) signaling. If the MBS configuration of any MBS service changes, the content in the MCCH signaling will be updated. In the case of MCCH signaling update, all terminal devices must re-acquire MCCH signaling. Even if the MBS configuration of the MBS service that some terminal devices have joined has not changed, these terminal devices also need to re-acquire MCCH signaling. For these terminals The equipment has caused an impact, such as causing power consumption of these terminal equipment.

Contents of the invention

Embodiments of the present application provide a method and device for notifying information change, a terminal device, a network device, a chip, a computer-readable storage medium, a computer program product, and a computer program.

The method for notifying information changes provided in the embodiment of this application includes:

The terminal device receives first signaling, where the first signaling carries first indication information, and the first indication information is used to indicate at least one of the following:

Whether the terminal device monitors the MCCH change notification DCI;

Whether the terminal equipment monitors MCCH DCI;

Whether the terminal device reacquires MCCH signaling;

Wherein, the MCCH change notification DCI is used to notify the MCCH change, the MCCH DCI is used to schedule the MCCH, and the MCCH is used to carry MCCH signaling, and the MCCH signaling includes one or more MBS configurations.

The network device sends first signaling to the terminal device, where the first signaling carries first indication information, and the first indication information is used to indicate at least one of the following:

Whether the terminal device monitors the MCCH change notification DCI;

Whether the terminal equipment monitors MCCH DCI;

Whether the terminal device reacquires MCCH signaling;

The device for notifying information change provided in the embodiment of the present application is applied to a terminal device, and the device includes:

A receiving unit, configured to receive first signaling, where the first signaling carries first indication information, and the first indication information is used to indicate at least one of the following:

Whether the terminal device monitors the MCCH change notification DCI;

Whether the terminal equipment monitors MCCH DCI;

Whether the terminal device reacquires MCCH signaling;

The device for notifying information change provided in the embodiment of the present application is applied to network equipment, and the device includes:

A sending unit, configured to send first signaling to the terminal device, where the first signaling carries first indication information, and the first indication information is used to indicate at least one of the following:

Whether the terminal device monitors the MCCH change notification DCI;

Whether the terminal equipment monitors MCCH DCI;

Whether the terminal device reacquires MCCH signaling;

The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to execute the above-mentioned method for notifying information changes.

The network device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to execute the above-mentioned method for notifying information changes.

The chip provided by the embodiment of the present application is used to implement the above method for notifying information change.

Specifically, the chip includes: a processor, configured to invoke and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned method for notifying information change.

The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program causes a computer to execute the above-mentioned method for notifying information change.

The computer program product provided by the embodiments of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above-mentioned method for notifying information changes.

The computer program provided by the embodiment of the present application, when running on a computer, enables the computer to execute the above-mentioned method for notifying information change.

Through the above technical solution, the network device notifies the terminal device whether to monitor the MCCH change notification DCI and/or whether to monitor the MCCH DCI and/or whether to reacquire the MCCH signaling through the first indication information carried in the first signaling, so as to reach the terminal device The purpose of power saving.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application;

FIG. 2 is a schematic diagram of a wake-up signal to control DRX provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of an MCCH repetition period provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of the MCCH modification cycle provided by the embodiment of the present application;

FIG. 5 is a schematic flowchart of a method for notifying information changes provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of the time domain position of the WUS provided by the embodiment of the present application;

FIG. 7 is a schematic diagram of the structure and composition of the device for notifying information changes provided by the embodiment of the present application;

Fig. 8 is a schematic diagram 2 of the structural composition of the device for notifying information change provided by the embodiment of the present application;

FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a chip according to an embodiment of the present application;

Fig. 11 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

As shown in FIG. 1 , a communication system 100 may include a terminal device 110 and a network device 120 . The network device 120 may communicate with the terminal device 110 through an air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120 .

It should be understood that the embodiment of the present application is only described by using the communication system 100 as an example, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (Long Term Evolution, LTE) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS), Internet of Things (Internet of Things, IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems, etc.

In the communication system 100 shown in FIG. 1 , the network device 120 may be an access network device that communicates with the terminal device 110 . The access network device can provide communication coverage for a specific geographical area, and can communicate with terminal devices 110 (such as UEs) located in the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE) system, or a Next Generation Radio Access Network (NG RAN) device, Either a base station (gNB) in the NR system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 can be a relay station, an access point, a vehicle-mounted device, a wearable Devices, hubs, switches, bridges, routers, or network devices in the future evolution of the Public Land Mobile Network (Public Land Mobile Network, PLMN), etc.

The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wirelessly.

For example, the terminal equipment 110 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, user agent, or user device. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, IoT devices, satellite handheld terminals, Wireless Local Loop (WLL) stations, Personal Digital Assistant , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolution networks, etc.

The terminal device 110 can be used for device-to-device (Device to Device, D2D) communication.

The wireless communication system 100 may also include a core network device 130 that communicates with the base station. The core network device 130 may be a 5G core network (5G Core, 5GC) device, for example, Access and Mobility Management Function (Access and Mobility Management Function , AMF), and for example, authentication server function (Authentication Server Function, AUSF), and for example, user plane function (User Plane Function, UPF), and for example, session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example, a data gateway (Session Management Function+Core Packet Gateway, SMF+PGW- C) Equipment. It should be understood that SMF+PGW-C can realize the functions of SMF and PGW-C at the same time. In the process of network evolution, the above-mentioned core network equipment may be called by other names, or a new network entity may be formed by dividing functions of the core network, which is not limited in this embodiment of the present application.

Various functional units in the communication system 100 may also establish a connection through a next generation network (next generation, NG) interface to implement communication.

For example, the terminal device establishes an air interface connection with the access network device through the NR interface to transmit user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); access Network equipment such as the next generation wireless access base station (gNB), can establish a user plane data connection with UPF through NG interface 3 (abbreviated as N3); access network equipment can establish control plane signaling with AMF through NG interface 2 (abbreviated as N2) connection; UPF can establish a control plane signaling connection with SMF through NG interface 4 (abbreviated as N4); UPF can exchange user plane data with the data network through NG interface 6 (abbreviated as N6); AMF can communicate with SMF through NG interface 11 (abbreviated as N11) The SMF establishes a control plane signaling connection; the SMF may establish a control plane signaling connection with the PCF through an NG interface 7 (N7 for short).

Figure 1 exemplarily shows a base station, a core network device, and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices and each base station may include other numbers of terminals within the coverage area. The device is not limited in the embodiment of this application.

It should be noted that FIG. 1 is only an illustration of a system applicable to this application, and of course, the method shown in the embodiment of this application may also be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation. It should also be understood that the "correspondence" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated. , configuration and configured relationship. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be used by pre-saving corresponding codes, tables or other It is implemented by indicating related information, and this application does not limit the specific implementation. For example, pre-defined may refer to defined in the protocol. It should also be understood that in the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, and this application does not limit this .

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the embodiments of the present application. protected range.

With people's pursuit of speed, delay, high-speed mobility, energy efficiency, and the diversity and complexity of business in future life, the ^3rd Generation Partnership Project (3GPP) international standards organization began to develop 5G . The main application scenarios of 5G are: Enhanced Mobile Broadband (eMBB), Ultra-Reliable Low-Latency Communications (URLLC), Massive Machine-Type Communications (mMTC) ).

On the one hand, eMBB still aims at users obtaining multimedia content, services and data, and its demand is growing rapidly. On the other hand, since eMBB may be deployed in different scenarios, such as indoors, urban areas, and rural areas, the capabilities and requirements vary greatly, so it cannot be generalized, and detailed analysis must be combined with specific deployment scenarios. Typical applications of URLLC include: industrial automation, electric power automation, telemedicine operations (surgery), traffic safety guarantee, etc. The typical characteristics of mMTC include: high connection density, small data volume, delay-insensitive services, low cost and long service life of modules, etc.

In the early deployment of NR, it is difficult to obtain complete NR coverage, so the typical network coverage is wide-area LTE coverage and NR island coverage mode. Moreover, a large number of LTE deployments are below 6GHz, and there is very little spectrum below 6GHz that can be used for 5G. Therefore, NR must study the spectrum application above 6GHz, while the coverage of high frequency bands is limited and the signal fades quickly. At the same time, in order to protect mobile operators' early investment in LTE, a tight interworking working mode between LTE and NR is proposed.

RRC state

In order to reduce air interface signaling, quickly restore wireless connections, and quickly restore data services, 5G defines a new Radio Resource Control (RRC) state, that is, RRC_INACTIVE state. This state is different from the RRC idle (RRC_IDLE) state and the RRC active (RRC_ACTIVE) state. in,

1) RRC_IDLE state (referred to as idle (idle) state): Mobility is cell selection and reselection based on terminal equipment, paging is initiated by the core network (Core Network, CN), and the paging area is configured by the CN. There is no terminal device context on the base station side, and there is no RRC connection.

2) RRC_CONNECTED state (connected state for short): there is an RRC connection, and there is a terminal device context at the base station side and the terminal device side. The network side knows the location of the terminal equipment at the specific cell level. Mobility is mobility controlled by the network side. Unicast data can be transmitted between the terminal equipment and the base station.

3) RRC_INACTIVE state (referred to as inactive (inactive) state): Mobility is cell selection and reselection based on terminal equipment, there is a connection between CN-NR, the context of the terminal equipment exists on a certain base station, and paging is triggered by RAN , the RAN-based paging area is managed by the RAN, and the network side knows the location of the terminal device based on the RAN-based paging area level.

MBMS

MBMS is a technology that transmits data from one data source to multiple terminal devices by sharing network resources. This technology can effectively use network resources while providing multimedia services, and realize broadcasting of multimedia services at a higher rate (such as 256kbps) and multicast.

Due to the low spectrum efficiency of MBMS, it is not enough to effectively carry and support the operation of mobile TV services. Therefore, in LTE, 3GPP clearly proposed to enhance the ability to support downlink high-speed MBMS services, and determined the design requirements for the physical layer and air interface.

3GPP R9 introduces evolved MBMS (evolved MBMS, eMBMS) into LTE. eMBMS proposes the concept of Single Frequency Network (SFN), that is, Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN). MBSFN uses a unified frequency to transmit service data in all cells at the same time, but To ensure the synchronization between cells. This method can greatly improve the overall signal-to-noise ratio distribution of the cell, and the spectrum efficiency will also be greatly improved accordingly. eMBMS implements broadcast and multicast of services based on the IP multicast protocol.

In LTE or LTE-Advanced (LTE-Advanced, LTE-A), MBMS only has a broadcast bearer mode, but no multicast bearer mode. In addition, the reception of MBMS service is applicable to terminal equipments in idle state or connected state.

3GPP R13 introduced the concept of Single Cell Point To Multiploint (SC-PTM), and SC-PTM is based on the MBMS network architecture.

MBMS introduces new logical channels, including Single Cell-Multicast Control Channel (Single Cell-Multicast Control Channel, SC-MCCH) and Single Cell-Multicast Transport Channel (Single Cell-Multicast Transport Channel, SC-MTCH). SC-MCCH and SC-MTCH are mapped to the downlink shared channel (Downlink-Shared Channel, DL-SCH), and further, DL-SCH is mapped to the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), wherein, SC - MCCH and SC-MTCH belong to logical channels, DL-SCH belongs to transport channels, and PDSCH belongs to physical channels. SC-MCCH and SC-MTCH do not support Hybrid Automatic Repeat reQuest (HARQ) operation.

MBMS introduces a new system information block (System Information Block, SIB) type, namely SIB20. Specifically, SIB20 is used to transmit SC-MCCH configuration information, and one cell has only one SC-MCCH. The SC-MCCH configuration information includes: SC-MCCH modification period, SC-MCCH repetition period, and information such as radio frames and subframes for scheduling SC-MCCH. Further, 1) the boundary of the modification period of SC-MCCH satisfies SFN mod m=0, wherein, SFN represents the system frame number of the boundary, and m is the modification period (ie sc-mcch-ModificationPeriod) of the SC-MCCH configured in SIB20. 2) Scheduling the wireless frame of SC-MCCH satisfies: SFN mod mcch-RepetitionPeriod=mcch-Offset, wherein, SFN represents the system frame number of the wireless frame, mcch-RepetitionPeriod represents the repetition period of SC-MCCH, and mcch-Offset represents SC-MCCH offset. 3) The subframe for scheduling the SC-MCCH is indicated by sc-mcch-Subframe.

The SC-MCCH is scheduled through a Physical Downlink Control Channel (PDCCH). On the one hand, a new radio network temporary identity (Radio Network Tempory Identity, RNTI), that is, a single cell RNTI (Single Cell RNTI, SC-RNTI) is introduced to identify the PDCCH (such as SC-MCCH PDCCH) used to schedule the SC-MCCH, Optionally, the fixed value of SC-RNTI is FFFC. On the other hand, a new RNTI is introduced, that is, a single cell notification RNTI (Single Cell Notification RNTI, SC-N-RNTI) to identify the PDCCH used to indicate the change notification of the SC-MCCH (such as notifying the PDCCH). Optionally, the SC The fixed value of -N-RNTI is FFFB; further, one of the 8 bits (bits) of DCI 1C can be used to indicate the change notification. In LTE, SC-PTM configuration information is based on SC-MCCH configured by SIB20, and then SC-MCCH configures SC-MTCH, and SC-MTCH is used to transmit service data.

Specifically, the SC-MCCH only transmits one message (that is, SCPTMConfiguration), which is used to configure configuration information of the SC-PTM. The configuration information of SC-PTM includes: temporary mobile group identity (Temporary Mobile Group Identity, TMGI), session identification (seession id), group RNTI (Group RNTI, G-RNTI), discontinuous reception (Discontinuous Reception, DRX) configuration information And the SC-PTM service information of the neighboring cell, etc. It should be noted that SC-PTM in R13 does not support Robust Header Compression (Robust Header Compression, ROHC) function.

The downlink discontinuous reception of SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-SchedulingCycle, and SC-MTCH-SchedulingOffset.

When [(SFN*10)+subframe number]modulo(SC-MTCH-SchedulingCycle)=SC-MTCH-SchedulingOffset is satisfied, start the timer onDurationTimerSCPTM;

When receiving downlink PDCCH scheduling, start the timer drx-InactivityTimerSCPTM;

The downlink SC-PTM service is received only when the timer onDurationTimerSCPTM or drx-InactivityTimerSCPTM is running.

SC-PTM business continuity adopts the concept of MBMS business continuity based on SIB15, that is, "SIB15+MBMSInterestIndication" mode. The service continuity of terminal equipment in idle state is based on the concept of frequency priority.

In the technical solution of the embodiment of the present application, a new SIB (called the first SIB) is defined, and the first SIB includes the configuration information of the first MCCH. Here, the first MCCH is the control channel of the MBMS service. In other words, the first SIB includes the configuration information of the first MCCH. One SIB is used to configure the configuration information of the NR MBMS control channel. Optionally, the NR MBMS control channel may also be called NR MCCH (that is, the first MCCH).

Further, the first MCCH is used to carry the first signaling. The embodiment of the present application does not limit the name of the first signaling. For example, the first signaling is signaling A, and the first signaling includes at least one first MTCH configuration information, here, the first MTCH is a traffic channel (also referred to as a data channel or a transmission channel) of the MBMS service, and the first MTCH is used to transmit MBMS service data (such as NR MBMS service data). In other words, the first MCCH is used to configure the configuration information of the traffic channel of NR MBMS. Optionally, the traffic channel of NR MBMS can also be called NR MTCH (that is, the first MTCH).

Specifically, the first signaling is used to configure an NR MBMS traffic channel, service information corresponding to the traffic channel, and scheduling information corresponding to the traffic channel. Further, optionally, the service information corresponding to the service channel, such as TMGI, session id and other identification information for identifying services. The scheduling information corresponding to the traffic channel, for example, the RNTI used when the MBMS service data corresponding to the traffic channel is scheduled, such as G-RNTI, DRX configuration information, and the like.

It should be noted that both the transmission of the first MCCH and the first MTCH are scheduled based on the PDCCH. Wherein, the RNTI used by the PDCCH for scheduling the first MCCH uses a network-wide unique identifier, that is, a fixed value. The RNTI used by the PDCCH for scheduling the first MTCH is configured through the first MCCH.

It should be noted that, in this embodiment of the present application, there is no restriction on naming of the first SIB, the first MCCH, and the first MTCH. For ease of description, the first SIB can also be referred to as the SIB for short, the first MCCH can also be referred to as the MCCH for short, and the first MTCH can also be referred to as the MTCH for short, and the PDCCH (ie, the MCCH PDCCH) configured to schedule the MCCH is configured by the SIB. ) and notify the PDCCH, wherein, the PDSCH (ie MCCH PDSCH) used to transmit the MCCH is scheduled by the DCI carried by the MCCH PDCCH. Further, configure M PDCCHs for scheduling MTCH (ie MTCH 1 PDCCH, MTCH 2 PDCCH, ..., MTCH M PDCCH) through MCCH, wherein, the DCI scheduling carried by MTCH n PDCCH is used to transmit the PDSCH of MTCH n (ie MTCH n PDSCH), n is an integer greater than or equal to 1 and less than or equal to M. MCCH and MTCH are mapped to DL-SCH, and further, DL-SCH is mapped to PDSCH, wherein MCCH and MTCH belong to logical channels, DL-SCH belongs to transport channel, and PDSCH belongs to physical channel.

It should be noted that although the foregoing solution is described using MBMS as an example, the description of "MBMS" may also be replaced with "MBS". The embodiment of the present application uses MBS as an example for description, and the description of "MBS" may also be replaced with "MBMS".

energy saving

In order to realize the energy saving of terminal equipment, NR energy saving enhancement introduces Wake Up Signal (WUS), which can also be referred to as energy saving signal or wake up signal for short. In standardization, the energy-saving wake-up signal is used in combination with the discontinuous reception (DRX) mechanism. The specific technical principle is that the terminal device receives the energy-saving wake-up signal before the DRX ON duration. As shown in Figure 2, when the terminal device has During data transmission, the energy-saving wake-up signal instructs the terminal device to monitor the PDCCH, that is, the energy-saving wake-up signal "wakes up" the terminal device to monitor the PDCCH during the DRX ON duration; otherwise, when the terminal device has no data transmission in a DRX cycle, the energy-saving wake-up signal indicates The terminal device does not monitor the PDCCH, that is, the energy-saving wake-up signal does not "wake up" the terminal device, and the terminal device does not need to monitor the PDCCH during the DRX ON Duration. Compared with the traditional DRX mechanism, when the terminal device has no data transmission, the terminal device can omit the PDCCH monitoring during the DRX ON duration, thereby realizing energy saving. The time before the DRX ON duration of the terminal device is called the DRX inactive time, and the time when the terminal device is in the DRX ON Duration is called the DRX active time.

In the NR system, many scenarios need to support multicast and broadcast business requirements, such as in the Internet of Vehicles and the Industrial Internet. So it is necessary to introduce multicast and broadcast MBS services in NR. It should be noted that the multicast-type MBS service refers to the MBS service transmitted in a multicast manner. The broadcast-type MBS service refers to the MBS service transmitted by broadcasting.

In the NR system, for the MBS configuration of the broadcast type MBS service, the newly defined SIB (such as the first SIB in the above solution) is used to configure the MCCH (such as the first MCCH in the above solution). The signaling carried by the MCCH (such as the first signaling in the above scheme, which can also be called MCCH signaling) is used to configure one or more MTCHs. Here, the MTCH is the traffic channel of the MBS service. Therefore, the configuration information of an MTCH It can also be understood as the MBS configuration of the MBS service, and the signaling carried by the MCCH is used to configure the MBS configuration of one or more MBS services. The configuration information of the MTCH (that is, the MBS configuration of the MBS service) may change. If there is a change, the network device needs to notify the terminal device to reacquire the MCCH signaling, and then update the MBS configuration of the MBS service.

MCCH is sent periodically, and the MCCH PDCCH used to schedule MCCH is also sent periodically. As shown in Figure 3, the cycle of MCCH is called MCCH repetition period (MCCH repetition period), and there is a period of duration (duration) in one MCCH repetition period. ) is called MCCH duration, and MCCH PDCCH is sent within the MCCH duration. Further, the MCCH PDCCH can be sent in a beam scanning manner. Figure 3 takes the MCCH PDCCH sending in a beam scanning manner through 4 beams as an example.

The MCCH change can be notified through the DCI, and this kind of DCI can also be called MCCH change notification DCI. Here, notifying the change of the MCCH refers to notifying that the content in the MCCH signaling has changed. If the MCCH change is notified, the terminal device needs to reacquire the MCCH signaling. If the MCCH change is not notified, the terminal device does not need to monitor the MCCH PDCCH in each MCCH repetition period to obtain the MCCH signaling, thereby achieving the purpose of power saving. As shown in Figure 4, the MCCH change notification DCI is sent within one MCCH modification period (MCCH modification period). The MCCH modification starts in the next MCCH modification period, or the MCCH modification may start in the MCCH modification period where the MCCH modification notification DCI is located. Here, changing the MCCH can be understood as changing the content in the MCCH signaling carried by the MCCH.

The MBS configurations of all MBS services broadcast by a cell are configured through one MCCH signaling. If the MBS configuration of any MBS service changes, the content in the MCCH signaling will be updated. In the case of MCCH signaling update, all terminal devices must re-acquire MCCH signaling. Even if the MBS configuration of the MBS service that some terminal devices have joined has not changed, these terminal devices also need to re-acquire MCCH signaling. For these terminals The equipment has caused an impact, such as causing power consumption of these terminal equipment.

To this end, the following technical solutions of the embodiments of the present application are proposed.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies may be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

Fig. 5 is a schematic flowchart of a method for notifying information change provided by an embodiment of the present application. As shown in Fig. 5 , the method for notifying information change includes the following steps:

Step 501: The network device sends a first signaling to the terminal device, and the terminal device receives the first signaling, the first signaling carries first indication information, and the first indication information is used to indicate at least one of the following: the Whether the terminal equipment monitors the MCCH change notification DCI; whether the terminal equipment monitors the MCCH DCI; whether the terminal equipment reacquires MCCH signaling; wherein, the MCCH change notification DCI is used to notify the MCCH change, and the MCCH DCI is used for scheduling MCCH, where the MCCH is used to bear MCCH signaling, and the MCCH signaling includes one or more MBS configurations.

In some optional implementation manners, the network device is a base station.

In this embodiment of the present application, the first signaling is the first DCI or the first WUS or the second WUS. Here, the first DCI may also be called MCCH change notification DCI. The first WUS may also be called the MCCH WUS. The second WUS may also be called the MCCH change notification WUS. The embodiment of the present application does not limit the names of the first DCI, the first WUS, and the second WUS.

The technology in the embodiment of the present application will be described below in conjunction with different implementation manners of the first signaling.

Option One

The first signaling is the first DCI, and the first indication information carried in the first DCI is used to indicate whether the terminal device reacquires MCCH signaling.

In some optional implementation manners, the first DCI is scrambled by the first RNTI; the first RNTI is the RNTI of scrambling MCCH DCI; or, the first RNTI is dedicated to scrambling the first DCI RNTI.

In some optional implementation manners, when the first RNTI is the RNTI of the scrambled MCCH DCI, the first DCI carries second indication information, and the second indication information is used to indicate that the first DCI is It is used to notify MCCH change or to schedule MCCH.

Scheme 1-1

In some optional implementation manners, the first indication information includes third information, and the third information is used to indicate at least one of the following: an MBS service whose MBS configuration has been changed, and an MBS service whose MBS configuration has not been changed.

In some optional implementation manners, the third information is a first bit map, and each bit in the first bit map corresponds to the identification information of an MBS service; the value of the bit is used to indicate the Indicates whether the MBS configuration change has occurred for the MBS service corresponding to the bit. Further, optionally, the identification information of the MBS service includes at least one of the following: an MBS session identification of the MBS service, a TMGI of the MBS service, and an MBS index of the MBS service.

In some optional implementation manners, the N bits in the first bit map correspond to identification information of N MBS services, and N is a positive integer; the N bits in the first bit map are the same as the N The correspondence between the identification information of the MBS services is stipulated in the agreement; or, the correspondence between the N bits in the first bitmap and the identification information of the N MBS services is that the network equipment passes the SIB Or configured by MCCH signaling.

In some optional implementation manners, the N bits in the first bitmap correspond to the identification information of the N MBS services in ascending order from low to high; or, the The N bits in the first bitmap correspond to the identification information of the N MBS services in descending order from low to high.

In the above solution, if the terminal device determines based on the first bitmap that the MBS configuration of the first MBS service that the terminal device joins has undergone a change in MBS configuration, then the terminal device determines that it is necessary to re-acquire MCCH signaling; if the The terminal device determines, based on the first bitmap, that the first MBS service that the terminal device joins has not undergone an MBS configuration change, and then the terminal device determines that it is not necessary to reacquire MCCH signaling.

Scheme 1-2

In some optional implementation manners, the third information is a second bitmap, and each bit in the second bitmap corresponds to an MBS group identifier of an MBS service group; the value of the bit is used for Indicates whether the MBS configuration change has occurred in the MBS service group corresponding to this bit.

Here, it should be noted that if the MBS configuration of all MBS services (or some MBS services) in the MBS service group is changed, it is considered that the MBS configuration of the MBS service group has changed.

In some optional implementation manners, the M bits in the second bitmap correspond to the MBS group identifiers of M MBS service groups, and M is a positive integer; the M bits in the second bitmap correspond to the The correspondence between the MBS group identities of the M MBS service groups is stipulated in the agreement; or, the correspondence between the M bits in the second bitmap and the MBS group identities of the M MBS service groups The relationship is configured by the network device through SIB or MCCH signaling.

In some optional implementation manners, the M bits in the second bitmap correspond to the MBS group identifiers of the M MBS service groups in ascending order from low to high; or, The M bits in the second bitmap correspond to the MBS group identifiers of the M MBS service groups in descending order from low to high.

In the above solution, if the terminal device determines based on the second bitmap that the MBS service group to which the first MBS service that the terminal device belongs belongs to has undergone a change in MBS configuration, then the terminal device determines that it is necessary to reacquire the MCCH information. and obtain the updated MBS configuration of the first MBS service based on the MCCH signaling; if the terminal device determines the MBS service group to which the first MBS service that the terminal device joins belongs to based on the second bitmap If there is no change of MBS configuration, the terminal device determines that it does not need to reacquire MCCH signaling.

In some optional implementation manners, the network device sends second configuration information to the terminal device, and the terminal device receives the second configuration information, where the second configuration information is used to determine at least one MBS service and at least one MBS Correspondence between service groups: the terminal device determines, based on the second configuration information, the MBS service group to which the first MBS service joined by the terminal device belongs. Further, optionally, the second configuration information is carried in SIB or MCCH signaling.

In some optional implementation manners, the terminal device receives third configuration information, and the third configuration information is used to determine the correspondence between service group identifiers and service identifiers; the terminal device , determining the service group identifier of the MBS service group to which the first MBS service joined by the terminal device belongs; or, the terminal device determines the first MBS service based on the service identifier of the first MBS service joined by the terminal device The service group ID of the MBS service group to which it belongs.

Here, optionally, the third configuration information is carried in RRC signaling or NAS signaling. The network device configures the corresponding relationship between the service group identifier and the service identifier for the terminal device through RRC signaling or NAS signaling. Here, the service group identifier refers to the identifier of the MBS service group, and the service identifier refers to the identifier of the MBS service. The terminal device can determine the service group identifier of the corresponding MBS service group according to the corresponding relationship between the service group identifier and the service identifier, and the service identifier of the first MBS service that it joins, so that it can Determine whether the MBS configuration has changed.

Here, the terminal device may also calculate the service group identifier according to the service identifier of the first MBS service that it joins, so as to judge whether the MBS configuration is changed according to the service group identifier. As an example, the service group identifier can be calculated according to the following formula: service group identifier=service identifier mod S, where S is a positive integer, optionally, S can be the number of services included in a service group.

Option II

The first signaling is the first WUS, and the first indication information carried in the first WUS is used to indicate whether the terminal device monitors MCCH DCI and/or reacquires MCCH signaling.

In some optional implementation manners, when the first WUS belongs to DCI, the first WUS is scrambled through the WUS RNTI.

In this embodiment of the present application, the first WUS may be associated with one MCCH transmission window, or associated with K MCCH transmission windows, or associated with one transmission period. It is explained below.

Option 1) In some optional implementation manners, the first WUS is associated with an MCCH transmission window, and the first WUS is located before its associated MCCH transmission window.

Option 2) In some optional implementation manners, the first WUS is associated with K MCCH transmission windows, the first WUS is located before its associated K MCCH transmission windows, and K is an integer greater than 1.

Here, optionally, the value of K is configured by the network device.

Here, optionally, the starting position of the first MCCH transmission window among the K MCCH transmission windows is configured by the network device.

Here, optionally, the first WUS is monitored by the terminal device within the WUS duration, and the start position or end position of the WUS duration is relative to the first of the K MCCH transmission windows. The deviation of the starting positions of the MCCH transmission windows is the first deviation.

Option 3) In some optional implementation manners, the first WUS is associated with a transmission period, and the first WUS is located before its associated transmission period.

Here, optionally, the length of the transmission period is configured by the network device.

Here, optionally, the starting position of the transmission period is determined based on the length of the transmission period. As an example, the length of the transmission period is T, and the frame number where the start position of the transmission period is located satisfies the following formula: SFN mod T=0.

Here, optionally, the first WUS is monitored by the terminal device within the WUS duration, and the deviation of the start position or end position of the WUS duration relative to the start position of the transmission period is first deviation.

In the above solution, the transmission period includes L MCCH transmission windows, where L is an integer greater than 1.

In the above scheme, the MCCH transmission window is used to transmit MCCH DCI. As an example, the MCCH transmission window is a time window corresponding to the MCCH duration or a time window corresponding to the MCCH repetition period.

In some optional implementation manners, the network device sends first configuration information to the terminal device, and the terminal device receives the first configuration information, where the first configuration information includes configuration information of the first WUS, where the The configuration information of the first WUS includes at least one of the following: the length of the WUS duration, the start position of the WUS duration, or the first offset corresponding to the end position. Further, optionally, the first configuration information is carried in SIB or MCCH signaling.

Scheme 2-1

In some optional implementation manners, the first indication information includes first information, and the value of the first information is used to indicate whether to monitor the MCCH DCI behind the first WUS and/or whether to receive the first WUS. MCCH signaling behind WUS.

In the above scheme, if the value of the first information is the first value, then the terminal equipment determines to monitor the MCCH DCI behind the first WUS and/or receive the MCCH signaling behind the first WUS; if The value of the first information is the second value, then the terminal device determines not to monitor the MCCH DCI behind the first WUS and/or not to receive the MCCH signaling behind the first WUS. As an example, the first value is 1 and the second value is 0; or, the first value is 0 and the second value is 1.

Here, when the terminal device determines to monitor the MCCH DCI behind the first WUS and/or receives the MCCH signaling behind the first WUS, the terminal device is in the MCCH transmission window associated with the first WUS Monitor MCCH DCI and/or receive MCCH signaling within K MCCH transmission windows or within one transmission period. When the terminal device determines not to monitor the MCCH DCI behind the first WUS and/or not receive the MCCH signaling behind the first WUS, the terminal device is in the MCCH transmission window associated with the first WUS Within or within K MCCH transmission windows or within one transmission period, the MCCH DCI is not monitored and/or the MCCH signaling is not received.

Scheme 2-2

The third information is a first bit map, and each bit in the first bit map corresponds to the identification information of an MBS service; the value of the bit is used to indicate whether the MBS service corresponding to the bit occurs The MBS configuration has been changed. Further, optionally, the identification information of the MBS service includes at least one of the following: an MBS session identification of the MBS service, a TMGI of the MBS service, and an MBS index of the MBS service.

In the above solution, if the terminal device determines based on the first bitmap that the MBS configuration of the first MBS service that the terminal device joins has undergone a change in MBS configuration, then the terminal device determines that it needs to monitor the MCCH DCI and/or reacquire the MCCH Signaling; if the terminal device determines based on the first bitmap that the first MBS service joined by the terminal device has not undergone an MBS configuration change, then the terminal device determines that it is not necessary to monitor the MCCH DCI and/or reacquire the MCCH signaling.

Scheme 2-3

In the above solution, if the terminal device determines based on the second bitmap that the MBS service group to which the first MBS service the terminal device belongs to has undergone a change in MBS configuration, then the terminal device determines that it needs to monitor the MCCH DCI and /or re-acquire MCCH signaling; if the terminal device determines based on the second bitmap that the MBS service group to which the first MBS service the terminal device belongs to has not undergone a change in MBS configuration, then the terminal device determines not to Need to monitor MCCH DCI and/or reacquire MCCH signaling.

third solution

The first signaling is the second WUS, and the first indication information carried in the second WUS is used to indicate whether the terminal device monitors the MCCH change notification DCI.

In some optional implementation manners, when the second WUS belongs to the DCI, the second WUS is scrambled through the WUS RNTI.

In some optional implementation manners, the second WUS is associated with a transmission window, the transmission window is used to transmit the MCCH change notification DCI, and the second WUS is located before its associated transmission window.

Here, optionally, the transmission window is a window within the MCCH modification period.

Here, optionally, when the transmission window is an MCCH transmission window, the search space of the MCCH change notification DCI is the same as the search space of the MCCH DCI.

Here, optionally, the second WUS is monitored by the terminal device within the WUS duration, and the deviation of the start position or end position of the WUS duration relative to the start position of the transmission window is first deviation.

In some optional implementation manners, the network device sends first configuration information to the terminal device, and the terminal device receives the first configuration information, where the first configuration information includes configuration information of the second WUS, wherein the The configuration information of the second WUS includes at least one of the following: the length of the WUS duration, the start position of the WUS duration, or the first offset corresponding to the end position. Further, optionally, the first configuration information is carried in SIB or MCCH signaling.

Scheme 3-1

In some optional implementation manners, the first indication information includes second information, and a value of the second information is used to indicate whether to monitor the MCCH change notification DCI behind the second WUS.

In the above solution, if the value of the second information is the first value, the terminal device determines to monitor the MCCH change notification DCI behind the second WUS; if the value of the second information is the second value , the terminal device determines not to monitor the MCCH change notification DCI following the second WUS. As an example, the first value is 1 and the second value is 0; or, the first value is 0 and the second value is 1.

Here, when the terminal device determines to monitor the MCCH change notification DCI following the second WUS, the terminal device monitors the MCCH change notification DCI within the transmission window associated with the second WUS. If the terminal device determines not to monitor the MCCH change notification DCI following the second WUS, the terminal device does not monitor the MCCH change notification DCI within the transmission window associated with the second WUS.

Scheme 3-2

In the above solution, if the terminal device determines based on the first bitmap that the MBS configuration of the first MBS service that the terminal device joins has undergone a change in MBS configuration, then the terminal device determines that it needs to monitor the MCCH change notification DCI; if the The terminal device determines based on the first bitmap that no MBS configuration change has occurred in the first MBS service that the terminal device joins, then the terminal device determines that it does not need to monitor the MCCH change notification DCI.

Scheme 3-3

In the above solution, if the terminal device determines based on the second bitmap that the MBS service group to which the first MBS service to which the terminal device belongs belongs has undergone a change in MBS configuration, then the terminal device determines that it needs to monitor the MCCH change notification DCI: If the terminal device determines based on the second bitmap that the MBS service group to which the first MBS service the terminal device belongs to has not undergone an MBS configuration change, then the terminal device determines that it does not need to monitor the MCCH change notification DCI .

In the technical solution of the embodiment of the present application, a tag (may be called a value tag) is introduced, and the tag is used for counting MCCH changes.

Specifically, the network device sends the value of the first label, the terminal device obtains the value of the first label, and every time the content in the MCCH signaling is changed, the value of the first label is increased by 1 ; The terminal device determines whether to reacquire MCCH signaling based on the value of the first label.

In some optional implementation manners, the terminal device obtains the value of the first label from the SIB or MCCH DCI.

In some optional implementation manners, the terminal device acquires the value of the first label within an MCCH modification period.

In the above solution, the initial value of the first label is 0, the maximum value of the first label is H, and H is a positive integer, and the value of the first label returns to the initial value after reaching the maximum value.

After the terminal device obtains the value of the first label, it can determine whether to re-acquire the MCCH signaling in the following manner: if the value of the first label stored by the terminal device is the same as the obtained value of the first label, then It is determined that MCCH signaling does not need to be reacquired; if the value of the first label stored by the terminal device is different from the value of the first label obtained, it is determined that MCCH signaling needs to be reacquired.

The technical solutions of the embodiments of the present application are illustrated below in conjunction with specific application examples.

Application example one

In this example, the network device indicates to the terminal device whether to reacquire MCCH signaling to the terminal device through the first DCI.

In some optional implementation manners, when the first RNTI is the RNTI of the scrambled MCCH DCI, the first DCI carries second indication information, and the second indication information is used to indicate that the first DCI is It is used to notify MCCH change or to schedule MCCH. Further, if the second indication information is used to indicate that the first DCI is used to notify MCCH change, then there is no MCCH scheduling information in the first DCI. Taking the first DCI as MCCH DCI as an example, the MCCH DCI is scrambled by the first RNTI, the first RNTI is the RNTI of the scrambled MCCH DCI, and the MCCH DCI does not carry the scheduling information of the MCCH, but carries the second indication information, The second indication information is used to indicate that the MCCH DCI is used to notify MCCH change.

Scheme 1-1

As an example, the value of a bit is 1 (or 0) to indicate that the MBS service corresponding to the bit has undergone an MBS configuration change, and the value of the bit to 0 (or 1) is used to indicate that the MBS service corresponding to the bit has changed. The MBS configuration has not been changed for the MBS service.

As an example, the N MBS services are the N MBS services being broadcast by the cell.

Here, the first MBS service that the terminal device joins may be understood as the MBS service that the terminal device is receiving or the MBS service that the terminal device is about to receive or the MBS service that the terminal device is interested in.

Scheme 1-2

In some optional implementation manners, the first indication information includes third information, and the third information is used to indicate at least one of the following: MBS services whose MBS configuration has changed, and MBS services whose MBS configuration has not changed.

Application example two

In this example, the network device indicates to the terminal device whether to monitor the MCCH DCI and/or reacquire MCCH signaling to the terminal device through the first WUS (called MCCH WUS).

Here, when the first WUS belongs to the DCI, the first WUS is scrambled through the WUS RNTI.

In this example, the first WUS may be associated with one MCCH transmission window, or associated with K MCCH transmission windows, or associated with one transmission period. It is explained below.

Here, there is a first WUS before each MCCH transmission window.

Here, optionally, the value of K is configured by the network device.

Here, there is a first WUS before every K MCCH transmission windows, that is, the K MCCH transmission windows share the same first WUS. Wherein, there is a first WUS before the first MCCH transmission window in the K MCCH transmission windows, as shown in Figure 6, the first deviation (called WUS deviation (WUS offset)) refers to the WUS duration (WUS duration) The offset of the end position of the relative to the start position of the first MCCH transmission window.

Here, optionally, the network device configures the frame number of the starting position of the first MCCH transmission window among the K MCCH transmission windows, and then the terminal device can determine the position of the K MCCH transmission windows through the value of K.

In the above scheme, the MCCH transmission window is used to transmit MCCH DCI.

Here, there is a first WUS before each transmission period, that is, all MCCH transmission windows in a transmission period share the same first WUS. Wherein, there is a first WUS before the start position of the transmission period, and the first deviation (called WUS offset (WUS offset)) refers to the deviation of the end position of the WUS duration (WUS duration) relative to the start position of the transmission period . Here, the network device configures the length of a transmission cycle as T, then, the frame number where the start position of the transmission cycle is located can be determined by the following formula: SFN mod T=0.

In this example, the network device can configure the configuration information of the first WUS (ie MCCH WUS) through SIB or MCCH signaling, wherein the configuration information of the first WUS includes at least one of the following: the length of the WUS duration, the WUS duration The first offset corresponding to the start position or end position of the time.

Here, the unit of the length of the WUS duration may be a symbol, a time slot, a subframe, a radio frame, and the like.

Here, the unit of the first offset may be a symbol, a time slot, a subframe, a radio frame, and the like.

In this example, the first WUS carries the first indication information, and the implementation manner of the first indication information will be described below.

Scheme 2-1

As an example, the first information is 1-bit information, and the value of 1-bit information is 1 (or 0) for indicating to monitor the MCCH DCI behind the first WUS and/or receive the MCCH signal behind the first WUS make. The value of the 1-bit information is 0 (or 1) for indicating not to monitor the MCCH DCI behind the first WUS and/or not to receive the MCCH signaling behind the first WUS.

Scheme 2-2

Scheme 2-3

In the above scheme, the terminal device monitors the first WUS within the duration of the WUS, if the first indication information in the first WUS indicates that the terminal device does not monitor the MCCH DCI and/or does not reacquire MCCH signaling, then the terminal device does not monitor the first WUS. The MCCH DCI behind the WUS and/or do not acquire the MCCH signaling behind the first WUS, otherwise, the terminal device monitors the MCCH DCI behind the first WUS and/or acquires the MCCH signaling behind the first WUS.

Application Example 3

In this example, the network device indicates to the terminal device whether to monitor the MCCH change notification DCI to the terminal device through the second WUS (called MCCH WUS).

Here, when the second WUS belongs to the DCI, the second WUS is scrambled through the WUS RNTI.

In this example, the second WUS may be associated with a transmission window, the transmission window is used to transmit the MCCH change notification DCI, and the second WUS is located before its associated transmission window.

Here, optionally, the transmission window is a window within the MCCH modification period. That is, a transmission window is defined in the MCCH modification period, and the transmission window is used for transmitting MCCH change notification DCI.

In this example, the network device can configure the configuration information of the second WUS (that is, the MCCH change notification WUS) through SIB or MCCH signaling, wherein the configuration information of the second WUS includes at least one of the following: the length of the WUS duration, The first deviation corresponding to the start position or end position of the WUS duration.

In this example, the second WUS carries the first indication information, and the implementation manner of the first indication information will be described below.

Scheme 3-1

As an example, the second information is 1-bit information, and the value of the 1-bit information is 1 (or 0) to indicate to monitor the MCCH change notification DCI behind the second WUS. The value of 1-bit information is 0 (or 1) to indicate not to monitor the MCCH change notification DCI behind the second WUS.

Scheme 3-2

Scheme 3-3

In some optional implementation manners, the M bits in the second bitmap correspond to the MBS group identifiers of M MBS service groups, and M is a positive integer; the M bits in the second bitmap correspond to the The corresponding relationship between the MBS group identifiers of the M MBS service groups is stipulated in the agreement; or, the correspondence between the M bits in the second bitmap and the MBS group identifiers of the M MBS service groups The relationship is configured by the network device through SIB or MCCH signaling.

In the above solution, the terminal device monitors the second WUS within the duration of the WUS, if the first indication information in the second WUS indicates that the terminal device does not monitor the MCCH change notification DCI. , the terminal device does not monitor the MCCH change notification DCI. Otherwise, the terminal device monitors the MCCH change notification DCI.

Application Example 4

In this example, the network device sends the value (ie, value tag) of a tag (ie, the first tag in the above scheme) to the terminal device through the SIB or MCCH DCI, and the value of the tag is an integer value. The tag can be called an MCCH value tag (MCCH value tag), the initial value of the tag is 0, and the maximum value is H. Whenever the content in the MCCH signaling is changed, the value of the tag is incremented by 1. If the value of the label reaches the maximum value, the value of the label starts from 0. In the scenario where the terminal device does not receive the MCCH change notification DCI within the MCCH modification period, or the terminal device recovers from the coverage hole and receives the MCCH signaling, the terminal device independently obtains the tag value in each MCCH modification period, and will obtain The value of the received label is compared with the value of the stored label. If they are the same, the stored MBS configuration is considered to be valid, otherwise, the MCCH signaling is reacquired.

In the technical solution of the embodiment of the present application, DCI or WUS indicates whether the terminal equipment monitors the MCCH change notification DCI and/or whether monitors the MCCH DCI and/or whether to reacquire MCCH signaling, so as to achieve the purpose of power saving of the terminal equipment.

The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner if there is no contradiction. Separately. As another example, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application. For another example, on the premise of no conflict, the various embodiments described in this application and/or the technical features in each embodiment can be combined with the prior art arbitrarily, and the technical solutions obtained after the combination should also fall within the scope of this application. protected range.

It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application. The implementation of the examples constitutes no limitation. In addition, in this embodiment of the application, the terms "downlink", "uplink" and "sidelink" are used to indicate the transmission direction of signals or data, wherein "downlink" is used to indicate that the transmission direction of signals or data is sent from the station The first direction to the user equipment in the cell, "uplink" is used to indicate that the signal or data transmission direction is the second direction sent from the user equipment in the cell to the station, and "side line" is used to indicate that the signal or data transmission direction is A third direction sent from UE1 to UE2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Fig. 7 is a schematic diagram of the structural composition of the device for notifying information change provided by the embodiment of the present application. It is applied to a terminal device. As shown in Fig. 7, the device for notifying information change includes:

The receiving unit 701 is configured to receive first signaling, where the first signaling carries first indication information, and the first indication information is used to indicate at least one of the following:

Whether the terminal device monitors the MCCH change notification DCI;

Whether the terminal equipment monitors MCCH DCI;

Whether the terminal device reacquires MCCH signaling;

In some optional implementation manners, the first signaling is a first DCI, and the first indication information carried in the first DCI is used to indicate whether the terminal device reacquires MCCH signaling.

In some optional implementation manners, the first DCI is scrambled by using the first wireless network temporary identifier RNTI;

The first RNTI is the RNTI of scrambling MCCH DCI; or,

The first RNTI is an RNTI dedicated to scrambling the first DCI.

In some optional implementation manners, when the first RNTI is the RNTI of the scrambled MCCH DCI,

The first DCI carries second indication information, and the second indication information is used to indicate whether the first DCI is used for notifying MCCH change or for scheduling MCCH.

In some optional implementation manners, the first signaling is a first wake-up signal WUS, and the first indication information carried in the first WUS is used to indicate whether the terminal device monitors the MCCH DCI and/or restarts Obtain MCCH signaling.

In some optional implementation manners, the first WUS is associated with an MCCH transmission window, and the first WUS is located before its associated MCCH transmission window.

In some optional implementation manners, the first WUS is associated with K MCCH transmission windows, the first WUS is located before its associated K MCCH transmission windows, and K is an integer greater than 1.

In some optional implementation manners, the value of K is configured by the network device.

In some optional implementation manners, the starting position of the first MCCH transmission window among the K MCCH transmission windows is configured by the network device.

In some optional implementation manners, the first WUS is monitored by the terminal device within the WUS duration, and the start position or end position of the WUS duration is relative to the K MCCH transmission window The deviation of the starting position of the first MCCH transmission window is the first deviation.

In some optional implementation manners, the first WUS is associated with a transmission period, and the first WUS is located before its associated transmission period.

In some optional implementation manners, the length of the transmission period is configured by the network device.

In some optional implementation manners, the starting position of the transmission period is determined based on the length of the transmission period.

In some optional implementation manners, the first WUS is monitored by the terminal device within the WUS duration, and the start position or end position of the WUS duration is relative to the start position of the transmission period. The deviation is the first deviation.

In some optional implementation manners, the transmission period includes L MCCH transmission windows, where L is an integer greater than 1.

In some optional implementation manners, the first signaling is the second WUS, and the first indication information carried in the second WUS is used to indicate whether the terminal device monitors the MCCH change notification DCI.

In some optional implementation manners, the transmission window is a window within the MCCH modification period.

In some optional implementation manners, when the transmission window is an MCCH transmission window, the search space of the MCCH change notification DCI is the same as the search space of the MCCH DCI.

In some optional implementation manners, the second WUS is monitored by the terminal device within the WUS duration, and the start position or end position of the WUS duration is relative to the start position of the transmission window. The deviation is the first deviation.

In some optional implementation manners, the MCCH transmission window is used to transmit MCCH DCI.

In some optional implementation manners, the receiving unit 701 is further configured to receive first configuration information, where the first configuration information includes configuration information of the first WUS or the second WUS, wherein the first WUS or the second WUS The configuration information of the WUS includes at least one of the following: the length of the WUS duration, the start position of the WUS duration, or the first offset corresponding to the end position.

In some optional implementation manners, the first configuration information is carried in a system information block (SIB) or MCCH signaling.

In some optional implementation manners, when the first WUS or the second WUS belongs to the DCI, the first WUS or the second WUS is scrambled through the WUS RNTI.

In some optional implementation manners, the device further includes: a determining unit 702, configured to determine to monitor the MCCH DCI behind the first WUS and/or receive the first WUS if the value of the first information is a first value MCCH signaling behind the first WUS; if the value of the first information is the second value, then determine not to monitor the MCCH DCI behind the first WUS and/or not receive the MCCH behind the first WUS MCCH signaling.

In some optional implementation manners, the apparatus further includes: a determining unit 702, configured to determine to monitor the MCCH change notification DCI behind the second WUS if the value of the second information is the first value; if If the value of the second information is the second value, it is determined not to monitor the MCCH change notification DCI following the second WUS.

In some optional implementation manners, the third information is a first bit map, and each bit in the first bit map corresponds to the identification information of an MBS service; the value of the bit is used to indicate the Indicates whether the MBS configuration change has occurred for the MBS service corresponding to the bit.

In some optional implementation manners, the identification information of the MBS service includes at least one of the following: an MBS session identifier of the MBS service, a TMGI of the MBS service, and an MBS index of the MBS service.

In some optional implementation manners, the device further includes: a determining unit 702, configured to:

When the first signaling is the first DCI, if the terminal device determines based on the first bitmap that the MBS configuration of the first MBS service that the terminal device joins has undergone a change in MBS configuration, then it is determined that the MCCH needs to be reacquired Signaling; if the terminal device determines based on the first bitmap that the first MBS service joined by the terminal device has not undergone an MBS configuration change, then it is determined that it is not necessary to re-acquire MCCH signaling;

In the case where the first signaling is the first WUS, if the terminal device determines based on the first bitmap that the first MBS service joined by the terminal device has undergone an MBS configuration change, then it is determined that the MCCH DCI needs to be monitored and/or re-acquire MCCH signaling; if the terminal device determines based on the first bitmap that the first MBS service that the terminal device joins has not undergone an MBS configuration change, then it is determined that it is not necessary to monitor the MCCH DCI and/or re-acquire Obtain MCCH signaling;

In the case where the first signaling is the second WUS, if the terminal device determines based on the first bitmap that the first MBS service joined by the terminal device has undergone a change in MBS configuration, then it is determined that the MCCH change needs to be monitored Notifying the DCI; if the terminal device determines based on the first bitmap that the first MBS service joined by the terminal device has not undergone an MBS configuration change, then it is determined that there is no need to monitor the MCCH change notification DCI.

When the first signaling is the first DCI, if the terminal device determines based on the second bitmap that the MBS configuration of the MBS service group to which the first MBS service to which the terminal device belongs belongs has changed, then Determining that MCCH signaling needs to be acquired again, and acquiring an updated MBS configuration of the first MBS service based on the MCCH signaling; If the MBS service group to which the service belongs has not changed the MBS configuration, it is determined that there is no need to re-obtain MCCH signaling;

When the first signaling is the first WUS, if the terminal device determines based on the second bitmap that the MBS configuration of the MBS service group to which the first MBS service that the terminal device belongs to has undergone a change, then Determining that it is necessary to monitor the MCCH DCI and/or reacquire MCCH signaling; if the terminal device determines based on the second bitmap that the MBS service group to which the first MBS service that the terminal device belongs to has not changed the MBS configuration, then Determine that there is no need to monitor MCCH DCI and/or reacquire MCCH signaling;

When the first signaling is the second WUS, if the terminal device determines based on the second bitmap that the MBS configuration of the MBS service group to which the first MBS service that the terminal device belongs to has undergone a change, then Determine that it is necessary to monitor the MCCH change notification DCI; if the terminal device determines based on the second bitmap that the MBS service group to which the first MBS service to which the terminal device belongs belongs has not undergone an MBS configuration change, then it is determined that it does not need to monitor the MCCH change Notify the DCI.

In some optional implementation manners, the receiving unit 701 is further configured to receive second configuration information, where the second configuration information is used to determine a correspondence between at least one MBS service and at least one MBS service group;

The apparatus further includes: a determining unit 701, configured to determine, based on the second configuration information, the MBS service group to which the first MBS service joined by the terminal device belongs.

In some optional implementation manners, the second configuration information is carried in SIB or MCCH signaling.

In some optional implementation manners, the receiving unit 701 is further configured to receive third configuration information, where the third configuration information is used to determine the correspondence between the service group identifier and the service identifier;

The apparatus further includes: a determining unit 701, configured to determine, based on the third configuration information, the service group identifier of the MBS service group to which the first MBS service joined by the terminal device belongs; or, based on the The service identifier of the first MBS service determines the service group identifier of the MBS service group to which the first MBS service belongs.

In some optional implementation manners, the receiving unit 701 is further configured to obtain the value of the first label, and each time the content in the MCCH signaling is changed, the value of the first label is increased by 1;

The apparatus further includes: a determining unit 701, configured to determine whether to reacquire MCCH signaling based on the value of the first label.

In some optional implementation manners, the receiving unit 701 is configured to obtain the value of the first label from the SIB or MCCH DCI.

In some optional implementation manners, the receiving unit 701 is configured to obtain the value of the first label in an MCCH modification period.

In some optional implementation manners, the initial value of the first label is 0, the maximum value of the first label is H, and H is a positive integer, and the value of the first label returns to the specified value after reaching the maximum value. the above initial value.

In some optional implementation manners, the determining unit 701 is configured to determine that it is not necessary to reacquire MCCH signaling if the value of the first label stored by the terminal device is the same as the value of the first label obtained. ; If the value of the first label stored by the terminal device is different from the obtained value of the first label, it is determined that the MCCH signaling needs to be acquired again.

Those skilled in the art should understand that the relevant description of the above-mentioned apparatus for notifying information change in the embodiment of the present application can be understood with reference to the relevant description of the method for notifying information change in the embodiment of the present application.

Fig. 8 is a schematic diagram of the second structural composition of the device for notifying information change provided by the embodiment of the present application, which is applied to network equipment. As shown in Fig. 8, the device for notifying information change includes:

A sending unit 801, configured to send first signaling to the terminal device, where the first signaling carries first indication information, and the first indication information is used to indicate at least one of the following:

Whether the terminal device monitors the MCCH change notification DCI;

Whether the terminal equipment monitors MCCH DCI;

Whether the terminal device reacquires MCCH signaling;

In some optional implementation manners, the first DCI is scrambled by a first RNTI;

The first RNTI is the RNTI of scrambling MCCH DCI; or,

The first RNTI is an RNTI dedicated to scrambling the first DCI.

In some optional implementation manners, the first signaling is the first WUS, and the first indication information carried in the first WUS is used to indicate whether the terminal device monitors the MCCH DCI and/or reacquires the MCCH signaling.

In some optional implementation manners, the sending unit 801 is further configured to send first configuration information to the terminal device, where the first configuration information includes configuration information of the first WUS or the second WUS, wherein the The configuration information of the first WUS or the second WUS includes at least one of the following: the length of the WUS duration, the start position of the WUS duration or the first offset corresponding to the end position.

In some optional implementation manners, the first configuration information is carried in SIB or MCCH signaling.

In some optional implementation manners, the N bits in the first bitmap correspond to identification information of N MBS services, and N is a positive integer;

The corresponding relationship between the N bits in the first bitmap and the identification information of the N MBS services is stipulated in the agreement; or,

The corresponding relationship between the N bits in the first bitmap and the identification information of the N MBS services is configured by the network device through SIB or MCCH signaling.

In some optional implementation manners, the N bits in the first bitmap correspond to the identification information of the N MBS services in ascending order from low to high; or,

The N bits in the first bitmap correspond to the identification information of the N MBS services in descending order from low to high.

In some optional implementation manners, the M bits in the second bitmap correspond to MBS group identifiers of M MBS service groups, and M is a positive integer;

The correspondence between the M bits in the second bitmap and the MBS group identities of the M MBS service groups is stipulated in the agreement; or,

The correspondence between the M bits in the second bitmap and the MBS group identities of the M MBS service groups is configured by the network device through SIB or MCCH signaling.

In some optional implementation manners, the M bits in the second bitmap correspond to the MBS group identifiers of the M MBS service groups in ascending order from low to high; or,

The M bits in the second bitmap correspond to the MBS group identifiers of the M MBS service groups in descending order from low to high.

In some optional implementation manners, the sending unit 801 is further configured to send second configuration information to the terminal device, where the second configuration information is used to determine the relationship between at least one MBS service and at least one MBS service group Correspondence.

In some optional implementation manners, the sending unit 801 is further configured to send the value of the first label, and each time the content in the MCCH signaling is changed, the value of the first label is increased by 1.

In some optional implementation manners, the value of the first label is carried in the SIB or MCCH DCI.

FIG. 9 is a schematic structural diagram of a communication device 900 provided by an embodiment of the present application. The communication device may be a terminal device or a network device. The communication device 900 shown in FIG. 9 includes a processor 910, and the processor 910 can invoke and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 9 , the communication device 900 may further include a memory 920 . Wherein, the processor 910 can invoke and run a computer program from the memory 920, so as to implement the method in the embodiment of the present application.

Wherein, the memory 920 may be an independent device independent of the processor 910 , or may be integrated in the processor 910 .

Optionally, as shown in FIG. 9, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.

Wherein, the transceiver 930 may include a transmitter and a receiver. The transceiver 930 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 900 may specifically be the network device of the embodiment of the present application, and the communication device 900 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 900 may specifically be the mobile terminal/terminal device of the embodiment of the present application, and the communication device 900 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for the sake of brevity , which will not be repeated here.

FIG. 10 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 10 , the chip 1000 may further include a memory 1020 . Wherein, the processor 1010 can invoke and run a computer program from the memory 1020, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1020 may be an independent device independent of the processor 1010 , or may be integrated in the processor 1010 .

Optionally, the chip 1000 may also include an input interface 1030 . Wherein, the processor 1010 can control the input interface 1030 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1000 may also include an output interface 1040 . Wherein, the processor 1010 can control the output interface 1040 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application. For the sake of brevity, here No longer.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

Fig. 11 is a schematic block diagram of a communication system 1100 provided by an embodiment of the present application. As shown in FIG. 11 , the communication system 1100 includes a terminal device 1110 and a network device 1120 .

Wherein, the terminal device 1110 can be used to realize the corresponding functions realized by the terminal device in the above method, and the network device 1120 can be used to realize the corresponding functions realized by the network device in the above method. .

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (Static RAM, SRAM), Dynamic Random Access Memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application , for the sake of brevity, it is not repeated here.

The embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, the Let me repeat.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods of the embodiments of the present application, For the sake of brevity, details are not repeated here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program is run on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , which will not be repeated here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When the computer program is run on the computer, the computer executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device For the sake of brevity, the corresponding process will not be repeated here.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disc, etc., which can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A method of notifying information changes, the method comprising:

The terminal device receives first signaling, where the first signaling carries first indication information, and the first indication information is used to indicate at least one of the following:

Whether the terminal device monitors the multicast control channel MCCH change notification downlink control information DCI;

Whether the terminal equipment monitors MCCH DCI;

Whether the terminal device reacquires MCCH signaling;

Wherein, the MCCH change notification DCI is used to notify the MCCH change, the MCCH DCI is used to schedule the MCCH, and the MCCH is used to carry MCCH signaling, and the MCCH signaling includes one or more multimedia broadcast service MBS configurations.
The method according to claim 1, wherein the first signaling is a first DCI, and the first indication information carried in the first DCI is used to indicate whether the terminal device reacquires MCCH signaling.
The method according to claim 2, wherein the first DCI is scrambled by a first wireless network temporary identifier (RNTI);

The first RNTI is the RNTI of scrambling MCCH DCI; or,

The first RNTI is an RNTI dedicated to scrambling the first DCI.
The method according to claim 3, wherein, when the first RNTI is the RNTI of scrambling MCCH DCI,

The first DCI carries second indication information, and the second indication information is used to indicate whether the first DCI is used for notifying MCCH change or for scheduling MCCH.
The method according to claim 1, wherein the first signaling is a first wake-up signal WUS, and the first indication information carried in the first WUS is used to indicate whether the terminal equipment monitors MCCH DCI and /or reacquire MCCH signaling.
The method of claim 5, wherein the first WUS is associated with an MCCH transmission window, and the first WUS is located before its associated MCCH transmission window.
The method according to claim 5, wherein the first WUS is associated with K MCCH transmission windows, the first WUS is located before its associated K MCCH transmission windows, and K is an integer greater than 1.
The method according to claim 7, wherein the value of K is configured by a network device.
The method according to claim 7 or 8, wherein the starting position of the first MCCH transmission window among the K MCCH transmission windows is configured by the network equipment.
The method according to any one of claims 7 to 9, wherein the first WUS is monitored by the terminal device within the WUS duration, and the start position or end position of the WUS duration is relative to The deviation of the starting position of the first MCCH transmission window among the K MCCH transmission windows is the first deviation.
The method of claim 5, wherein the first WUS is associated with a transmission period, the first WUS being located before its associated transmission period.
The method according to claim 11, wherein the length of the transmission period is configured by a network device.
The method according to claim 11 or 12, wherein the starting position of the transmission period is determined based on the length of the transmission period.
The method according to any one of claims 11 to 13, wherein the first WUS is monitored by the terminal device within the WUS duration, and the start position or end position of the WUS duration is relative to The deviation of the starting position of the transmission cycle is a first deviation.
The method according to any one of claims 11 to 14, wherein the transmission period includes L MCCH transmission windows, where L is an integer greater than 1.
The method according to claim 1, wherein the first signaling is a second WUS, and the first indication information carried in the second WUS is used to indicate whether the terminal device monitors MCCH change notification DCI.
The method according to claim 16, wherein the second WUS is associated with a transmission window for transmitting MCCH change notification DCI, and the second WUS is located before its associated transmission window.
The method according to claim 17, wherein the transmission window is a window within an MCCH modification period.
The method according to claim 17 or 18, wherein, when the transmission window is an MCCH transmission window, the search space of the MCCH change notification DCI is the same as the search space of the MCCH DCI.
The method according to any one of claims 17 to 19, wherein the second WUS is monitored by the terminal device within the WUS duration, and the start position or end position of the WUS duration is relative to The deviation of the starting position of the transmission window is a first deviation.
The method according to any one of claims 6 to 10, 15, 19, wherein the MCCH transmission window is used to transmit MCCH DCI.
The method according to any one of claims 5 to 21, wherein the method further comprises:

The terminal device receives first configuration information, where the first configuration information includes configuration information of the first WUS or the second WUS, wherein the configuration information of the first WUS or the second WUS includes at least one of the following: WUS persistent The first deviation corresponding to the length of time, the start position or the end position of the WUS duration.
The method according to claim 22, wherein the first configuration information is carried in a system information block (SIB) or MCCH signaling.
The method according to any one of claims 5 to 23, wherein, when the first WUS or the second WUS belongs to DCI, the first WUS or the second WUS is scrambled through WUS RNTI.
The method according to any one of claims 5 to 15, wherein the first indication information includes first information, and the value of the first information is used to indicate whether to monitor the MCCH DCI behind the first WUS And/or whether to receive MCCH signaling behind the first WUS.
The method according to claim 25, wherein said method further comprises:

If the value of the first information is the first value, the terminal device determines to monitor the MCCH DCI behind the first WUS and/or receive the MCCH signaling behind the first WUS;

If the value of the first information is the second value, the terminal device determines not to monitor the MCCH DCI behind the first WUS and/or not to receive the MCCH signaling behind the first WUS.
The method according to any one of claims 16 to 20, wherein the first indication information includes second information, and the value of the second information is used to indicate whether to monitor the MCCH change behind the second WUS Notify the DCI.
The method according to claim 27, wherein said method further comprises:

If the value of the second information is the first value, the terminal device determines to monitor the MCCH change notification DCI behind the second WUS;

If the value of the second information is the second value, the terminal device determines not to monitor the MCCH change notification DCI following the second WUS.
The method according to any one of claims 2 to 24, wherein the first indication information includes third information, and the third information is used to indicate at least one of the following: MBS service with changed MBS configuration, MBS The configuration of the MBS service has not changed.
The method according to claim 29, wherein the third information is a first bit map, and each bit in the first bit map corresponds to an identification information of an MBS service; the value of the bit is used It is used to indicate whether the MBS configuration change has occurred in the MBS service corresponding to the bit.
The method according to claim 30, wherein the identification information of the MBS service includes at least one of the following: MBS session identification of the MBS service, TMGI of the MBS service, and MBS index of the MBS service.
The method according to claim 30 or 31, wherein the N bits in the first bitmap correspond to the identification information of N MBS services, and N is a positive integer;

The corresponding relationship between the N bits in the first bitmap and the identification information of the N MBS services is stipulated in the agreement; or,

The corresponding relationship between the N bits in the first bitmap and the identification information of the N MBS services is configured by the network device through SIB or MCCH signaling.
The method of claim 32, wherein,

The N bits in the first bitmap correspond to the identification information of the N MBS services in ascending order from low to high; or,

The N bits in the first bitmap correspond to the identification information of the N MBS services in descending order from low to high.
The method according to any one of claims 30 to 33, wherein the method further comprises:

When the first signaling is the first DCI, if the terminal device determines based on the first bitmap that the MBS configuration of the first MBS service that the terminal device joins has undergone a change in MBS configuration, then the terminal device determines It is necessary to re-acquire MCCH signaling; if the terminal device determines based on the first bitmap that the first MBS service joined by the terminal device has not undergone an MBS configuration change, then the terminal device determines that it is not necessary to re-acquire MCCH signaling ;

In the case where the first signaling is the first WUS, if the terminal device determines based on the first bitmap that the MBS configuration of the first MBS service joined by the terminal device has changed, the terminal device determines It is necessary to monitor MCCH DCI and/or reacquire MCCH signaling; if the terminal device determines based on the first bitmap that the first MBS service that the terminal device joins has not undergone an MBS configuration change, then the terminal device determines that no Need to monitor MCCH DCI and/or reacquire MCCH signaling;

In the case where the first signaling is the second WUS, if the terminal device determines based on the first bitmap that the MBS configuration of the first MBS service joined by the terminal device has undergone a change in MBS configuration, the terminal device determines It is necessary to monitor the MCCH change notification DCI; if the terminal device determines based on the first bitmap that the first MBS service joined by the terminal device has not undergone an MBS configuration change, the terminal device determines that it does not need to monitor the MCCH change notification DCI .
The method according to claim 29, wherein the third information is a second bitmap, and each bit in the second bitmap corresponds to an MBS group identifier of an MBS service group; the selection of the bits The value is used to indicate whether the MBS configuration change has occurred in the MBS service group corresponding to this bit.
The method according to claim 35, wherein the M bits in the second bitmap correspond to MBS group identifiers of M MBS service groups, and M is a positive integer;

The correspondence between the M bits in the second bitmap and the MBS group identities of the M MBS service groups is stipulated in the agreement; or,

The correspondence between the M bits in the second bitmap and the MBS group identities of the M MBS service groups is configured by the network device through SIB or MCCH signaling.
The method of claim 36, wherein,

The M bits in the second bitmap correspond to the MBS group identifiers of the M MBS service groups in ascending order from low to high; or,

The M bits in the second bitmap correspond to the MBS group identifiers of the M MBS service groups in descending order from low to high.
The method according to any one of claims 35 to 37, wherein the method further comprises:

When the first signaling is the first DCI, if the terminal device determines based on the second bitmap that the MBS configuration of the MBS service group to which the first MBS service to which the terminal device belongs belongs has changed, then The terminal device determines that it is necessary to re-acquire MCCH signaling, and obtains an updated MBS configuration of the first MBS service based on the MCCH signaling; if the terminal device determines that the terminal device joins in based on the second bitmap The MBS service group to which the first MBS service belongs does not change the MBS configuration, then the terminal device determines that it does not need to re-acquire MCCH signaling;

When the first signaling is the first WUS, if the terminal device determines based on the second bitmap that the MBS configuration of the MBS service group to which the first MBS service that the terminal device belongs to has undergone a change, then The terminal device determines that it needs to monitor MCCH DCI and/or reacquire MCCH signaling; if the terminal device determines based on the second bitmap that the MBS service group to which the first MBS service that the terminal device belongs belongs to does not have MBS configuration change, the terminal device determines that it does not need to monitor MCCH DCI and/or reacquire MCCH signaling;

When the first signaling is the second WUS, if the terminal device determines based on the second bitmap that the MBS configuration of the MBS service group to which the first MBS service that the terminal device belongs to has undergone a change, then The terminal device determines that it needs to monitor the MCCH change notification DCI; if the terminal device determines based on the second bitmap that the MBS service group to which the first MBS service the terminal device belongs to has not changed the MBS configuration, then the The terminal device determines that it does not need to monitor the MCCH change notification DCI.
The method according to any one of claims 35 to 38, wherein the method further comprises:

The terminal device receives second configuration information, where the second configuration information is used to determine a correspondence between at least one MBS service and at least one MBS service group;

The terminal device determines, based on the second configuration information, the MBS service group to which the first MBS service that the terminal device joins belongs.
The method according to claim 39, wherein the second configuration information is carried in SIB or MCCH signaling.
The method according to any one of claims 35 to 38, wherein the method further comprises:

The terminal device receives third configuration information, and the third configuration information is used to determine the correspondence between service group identifiers and service identifiers; the terminal device determines, based on the third configuration information, the The service group identifier of the MBS service group to which the first MBS service belongs; or,

The terminal device determines the service group identifier of the MBS service group to which the first MBS service belongs based on the service identifier of the first MBS service that the terminal device joins.
The method according to any one of claims 1 to 41, wherein the method further comprises:

The terminal device acquires the value of the first label, and every time the content in the MCCH signaling is changed, the value of the first label is increased by 1;

The terminal device determines whether to reacquire MCCH signaling based on the value of the first label.
The method according to claim 42, wherein said terminal device acquiring the value of the first tag comprises:

The terminal device acquires the value of the first label from the SIB or MCCH DCI.
The method according to claim 42 or 43, wherein the acquiring the value of the first tag by the terminal device comprises:

The terminal device acquires the value of the first label in the MCCH modification period.
The method according to any one of claims 42 to 44, wherein the initial value of the first label is 0, the maximum value of the first label is H, H is a positive integer, and the first label After the value reaches the maximum value, it returns to the initial value.
The method according to any one of claims 42 to 45, wherein the terminal device determines whether to re-acquire MCCH signaling based on the value of the first label, including:

If the value of the first label stored by the terminal device is the same as the obtained value of the first label, it is determined that it is not necessary to re-acquire MCCH signaling;

If the value of the first label stored by the terminal device is different from the acquired value of the first label, it is determined that the MCCH signaling needs to be acquired again.
A method of notifying information changes, the method comprising:

The network device sends first signaling to the terminal device, where the first signaling carries first indication information, and the first indication information is used to indicate at least one of the following:

Whether the terminal device monitors the MCCH change notification DCI;

Whether the terminal equipment monitors MCCH DCI;

Whether the terminal device reacquires MCCH signaling;

Wherein, the MCCH change notification DCI is used to notify the MCCH change, the MCCH DCI is used to schedule the MCCH, and the MCCH is used to carry MCCH signaling, and the MCCH signaling includes one or more MBS configurations.
The method according to claim 47, wherein the first signaling is a first DCI, and the first indication information carried in the first DCI is used to indicate whether the terminal device reacquires MCCH signaling.
The method of claim 48, wherein the first DCI is scrambled by a first RNTI;

The first RNTI is the RNTI of scrambling MCCH DCI; or,

The first RNTI is an RNTI dedicated to scrambling the first DCI.
The method according to claim 49, wherein, when the first RNTI is the RNTI of scrambling MCCH DCI,

The first DCI carries second indication information, and the second indication information is used to indicate whether the first DCI is used for notifying MCCH change or for scheduling MCCH.
The method according to claim 47, wherein the first signaling is the first WUS, and the first indication information carried in the first WUS is used to indicate whether the terminal device monitors MCCH DCI and/or Reacquire MCCH signaling.
The method of claim 51, wherein the first WUS is associated with an MCCH transmission window, the first WUS being located before its associated MCCH transmission window.
The method according to claim 51, wherein the first WUS is associated with K MCCH transmission windows, the first WUS is located before its associated K MCCH transmission windows, and K is an integer greater than 1.
The method according to claim 53, wherein the value of K is configured by a network device.
The method according to claim 53 or 54, wherein the starting position of the first MCCH transmission window among the K MCCH transmission windows is configured by the network equipment.
The method according to any one of claims 53 to 55, wherein the first WUS is monitored by the terminal device within the WUS duration, and the start position or end position of the WUS duration is relative to The deviation of the starting position of the first MCCH transmission window among the K MCCH transmission windows is the first deviation.
51. The method of claim 51, wherein the first WUS is associated with a transmission period, the first WUS preceding its associated transmission period.
The method according to claim 57, wherein the length of the transmission period is configured by a network device.
A method according to claim 57 or 58, wherein the starting position of the transmission period is determined based on the length of the transmission period.
The method according to any one of claims 57 to 59, wherein the first WUS is monitored by the terminal device within the WUS duration, and the start position or end position of the WUS duration is relative to The deviation of the starting position of the transmission cycle is a first deviation.
The method according to any one of claims 57 to 60, wherein the transmission period includes L MCCH transmission windows, where L is an integer greater than 1.
The method according to claim 47, wherein the first signaling is the second WUS, and the first indication information carried in the second WUS is used to indicate whether the terminal device monitors MCCH change notification DCI.
The method of claim 62, wherein said second WUS is associated with a transmission window for transmitting MCCH change notification DCI, said second WUS being located before its associated transmission window.
The method of claim 63, wherein the transmission window is a window within an MCCH modification period.
The method according to claim 63 or 64, wherein, when the transmission window is an MCCH transmission window, the search space of the MCCH change notification DCI is the same as the search space of the MCCH DCI.
The method according to any one of claims 63 to 65, wherein the second WUS is monitored by the terminal device within the duration of the WUS, and the start position or end position of the duration of the WUS is relative to The deviation of the starting position of the transmission window is a first deviation.
The method according to any one of claims 52 to 56, 61, 65, wherein the MCCH transmission window is used to transmit MCCH DCI.
The method according to any one of claims 51 to 67, wherein the method further comprises:

The network device sends first configuration information to the terminal device, where the first configuration information includes configuration information of the first WUS or the second WUS, where the configuration information of the first WUS or the second WUS includes at least the following One of: the length of the WUS duration, the first deviation corresponding to the start position or the end position of the WUS duration.
The method according to claim 68, wherein the first configuration information is carried in SIB or MCCH signaling.
The method according to any one of claims 51 to 69, wherein, when the first WUS or the second WUS belongs to DCI, the first WUS or the second WUS is scrambled through WUS RNTI.
The method according to any one of claims 51 to 61, wherein the first indication information includes first information, and the value of the first information is used to indicate whether to monitor the MCCH DCI behind the first WUS And/or whether to receive MCCH signaling behind the first WUS.
The method according to any one of claims 62 to 66, wherein the first indication information includes second information, and the value of the second information is used to indicate whether to monitor the MCCH change behind the second WUS Notify the DCI.
The method according to any one of claims 48 to 70, wherein the first indication information includes third information, and the third information is used to indicate at least one of the following: MBS service with changed MBS configuration, MBS The configuration of the MBS service has not changed.
The method according to claim 73, wherein the third information is a first bit map, and each bit in the first bit map corresponds to an identification information of an MBS service; the value of the bit is used It is used to indicate whether the MBS configuration change has occurred in the MBS service corresponding to the bit.
The method according to claim 74, wherein the identification information of the MBS service includes at least one of the following: MBS session identification of the MBS service, TMGI of the MBS service, and MBS index of the MBS service.
The method according to claim 74 or 75, wherein the N bits in the first bit map correspond to N identification information of MBS services, and N is a positive integer;

The corresponding relationship between the N bits in the first bitmap and the identification information of the N MBS services is stipulated in the agreement; or,

The corresponding relationship between the N bits in the first bitmap and the identification information of the N MBS services is configured by the network device through SIB or MCCH signaling.
The method of claim 76, wherein,

The N bits in the first bitmap correspond to the identification information of the N MBS services in ascending order from low to high; or,

The N bits in the first bitmap correspond to the identification information of the N MBS services in descending order from low to high.
The method according to claim 73, wherein the third information is a second bitmap, and each bit in the second bitmap corresponds to an MBS group identifier of an MBS service group; the selection of the bits The value is used to indicate whether the MBS configuration change has occurred in the MBS service group corresponding to this bit.
The method according to claim 78, wherein the M bits in the second bitmap correspond to MBS group identifiers of M MBS service groups, and M is a positive integer;

The correspondence between the M bits in the second bitmap and the MBS group identities of the M MBS service groups is stipulated in the agreement; or,

The correspondence between the M bits in the second bitmap and the MBS group identities of the M MBS service groups is configured by the network device through SIB or MCCH signaling.
The method of claim 79, wherein,

The M bits in the second bitmap correspond to the MBS group identifiers of the M MBS service groups in ascending order from low to high; or,

The M bits in the second bitmap correspond to the MBS group identifiers of the M MBS service groups in descending order from low to high.
The method according to any one of claims 78 to 80, wherein the method further comprises:

The network device sends second configuration information to the terminal device, where the second configuration information is used to determine a correspondence between at least one MBS service and at least one MBS service group.
The method according to claim 81, wherein the second configuration information is carried in SIB or MCCH signaling.
The method according to any one of claims 47 to 82, wherein the method further comprises:

The network device sends the value of the first label, and every time the content in the MCCH signaling is changed, the value of the first label is increased by 1.
The method according to claim 83, wherein the value of the first label is carried in SIB or MCCH DCI.
The method according to claim 83 or 84, wherein the initial value of the first label is 0, the maximum value of the first label is H, H is a positive integer, and the value of the first label reaches the maximum value then reverts to the initial value described.
A device for notifying information changes is applied to a terminal device, the device comprising:

A receiving unit, configured to receive first signaling, where the first signaling carries first indication information, and the first indication information is used to indicate at least one of the following:

Whether the terminal device monitors the MCCH change notification DCI;

Whether the terminal equipment monitors MCCH DCI;

Whether the terminal device reacquires MCCH signaling;

Wherein, the MCCH change notification DCI is used to notify the MCCH change, the MCCH DCI is used to schedule the MCCH, and the MCCH is used to carry MCCH signaling, and the MCCH signaling includes one or more MBS configurations.
A device for notifying information changes is applied to network equipment, and the device includes:

A sending unit, configured to send first signaling to the terminal device, where the first signaling carries first indication information, and the first indication information is used to indicate at least one of the following:

Whether the terminal device monitors the MCCH change notification DCI;

Whether the terminal equipment monitors MCCH DCI;

Whether the terminal device reacquires MCCH signaling;

Wherein, the MCCH change notification DCI is used to notify the MCCH change, the MCCH DCI is used to schedule the MCCH, and the MCCH is used to carry MCCH signaling, and the MCCH signaling includes one or more MBS configurations.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute the computer program described in any one of claims 1 to 46 Methods.
A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to invoke and run the computer program stored in the memory, and execute the computer program described in any one of claims 47 to 85 Methods.
A chip, comprising: a processor, configured to invoke and run a computer program from a memory, so that a device equipped with the chip executes the method as claimed in any one of claims 1 to 46.
A chip, comprising: a processor, configured to invoke and run a computer program from a memory, so that a device equipped with the chip executes the method as claimed in any one of claims 47 to 85.
A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1-45.
A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 47-85.
A computer program product comprising computer program instructions causing a computer to perform the method as claimed in any one of claims 1 to 46.
A computer program product comprising computer program instructions for causing a computer to perform the method as claimed in any one of claims 47 to 85.
A computer program that causes a computer to perform the method as claimed in any one of claims 1 to 46.
A computer program that causes a computer to perform the method as claimed in any one of claims 47 to 85.