Method for activating mbs service and transceiving device

Abstract

The present application relates to a kind of communication technical field, more particularly to a kind of MBS service activation method and transceiver device, comprising: generating indication information, indication information is used to indicate the current activation state of multicast session corresponding to multicast service, and / or indication information is used to indicate whether multicast service can be received by user equipment in RRC inactive state or CM inactive state after activation, indication information is sent to user equipment;It also includes: receiving indication information from network equipment, indication information is used to indicate the current activation state of multicast session corresponding to multicast service, and / or indication information is used to indicate whether multicast service can be received by user equipment in RRC inactive state or CM inactive state after activation, in RRC inactive state or CM inactive state, according to indication information, multicast service is received;By the technical scheme of the present application, system performance can be improved, user performance and user experience can be improved by avoiding packet loss or additional power consumption of user equipment.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and more particularly to an activation method and transceiver device for MBS services. Background Technology

[0002] With the rapid development of the internet and the widespread adoption of large-screen, multi-functional user devices, a large number of mobile data multimedia services and various high-bandwidth multimedia services have emerged. To effectively utilize mobile network resources, 3GPP proposed Multimedia Broadcast Multicast (MBS) services, a technology that transmits data from a single data source to multiple target user devices, achieving network resource sharing and improving network resource utilization. Considering that the MBS service transmission mechanism proposed by the LTE system is completely independent of the unicast service transmission mechanism, independent base stations are required, and MBS service transmission and reception can only be achieved through a separate network. Therefore, the 5G system defined in 3GPP Release 17 proposes that base stations can simultaneously transmit unicast and multicast services, thus enabling the use of existing base stations to achieve MBS service transmission and reception.

[0003] However, Release 17 (R17) addresses the multicast service reception mechanism for UEs in connected mode. For UEs in the newly introduced RRC_INACTIVE (also known as RRC inactive mode) state by 3GPP, a complete, significantly efficient, and widely accepted multicast service reception mechanism has not yet been proposed. Recent conference discussions suggest that UEs in RRC inactive mode can obtain multicast service transmission configurations through dedicated RRC signaling and multicast MCCH; UEs in RRC inactive mode need to join a multicast session before receiving multicast services; and the activation of the multicast session can occur before, after, or simultaneously with the UE in RRC inactive mode obtaining the multicast service transmission configuration.

[0004] However, during the reception process, the inventors discovered that the latest research still has at least the following problems: UEs in the RRC inactive state cannot obtain the activation status of multicast services. Specifically, if a multicast service is in the deactivated state, a UE in the RRC inactive state may mistakenly believe it is activated and begin receiving the service, but will not be able to receive the service data, resulting in additional power consumption. If a MBS multicast service is in the active state, a UE in the RRC inactive state may mistakenly believe it is not yet activated and will not receive the service, while the service data has already begun to be transmitted, leading to the loss of the service data packets.

[0005] Therefore, there is an urgent need for a method to activate multicast broadcast services in the existing technology. Summary of the Invention

[0006] In view of the above-mentioned problems existing in the current MBS service activation, the present invention provides an MBS service activation method and transceiver device.

[0007] A method for activating MBS services is provided, the method being executed by a network device, the method comprising:

[0008] Generate indication information; the indication information is used to indicate the current activation state of the multicast session corresponding to the multicast service, and / or the indication information is used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or CM inactive state after activation;

[0009] Send the instruction information to the user equipment.

[0010] A method for activating MBS service is provided, the method being executed by a user equipment, the method comprising:

[0011] Receive indication information from network devices; the indication information is used to indicate the current activation status of the multicast session corresponding to the multicast service, and / or the indication information is used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or CM inactive state after activation;

[0012] In the RRC inactive state or CM inactive state, the multicast service is received according to the indication information.

[0013] An apparatus for transmitting MBS services is provided, comprising:

[0014] A generation module is used to generate indication information, which is used to indicate the current activation state of the multicast session corresponding to the multicast service, and / or the indication information is used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or CM inactive state after activation.

[0015] The sending module is used to send indication information to the user equipment.

[0016] A receiving device for MBS services is provided, comprising:

[0017] The receiving module receives indication information from the user equipment; the indication information is used to indicate the current activation state of the multicast session corresponding to the multicast service, and / or the indication information is used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or CM inactive state after activation;

[0018] The processing module is used to receive the multicast service according to the indication information in the RRC inactive state or CM inactive state.

[0019] A base station is provided, including a processor and a memory, the memory being configured to store a computer program, which, when executed by the processor, causes the processor to implement the method of sending instruction information as described above.

[0020] A terminal is provided, including a processor and a memory, the memory being configured to store a computer program, which, when executed by the processor, causes the processor to implement the method for receiving instruction information as described above.

[0021] A computer-readable storage medium includes a computer program that, when executed by a processor, causes the processor to implement any of the methods.

[0022] The beneficial effects of this invention are: the introduction of an indication information, which indicates the current activation state of the multicast session corresponding to the multicast service, and / or indicates whether the multicast service can be received by user equipment in the RRC or CM inactive state after activation, thereby avoiding packet loss by user equipment or generating additional power consumption, improving system performance, and enhancing user performance and user experience. Attached Figure Description

[0023] Figure 1 A flowchart illustrating the process of sending instruction information in one embodiment of the present invention;

[0024] Figure 2 A flowchart illustrating the process of receiving instruction information in one embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of the transmitting device in one embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the receiving device for use in one embodiment of the present invention. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0028] This invention addresses the problems in the prior art by providing an activation method and transceiver device for MBS services. By introducing an indication information, the invention can indicate the activation status of the multicast session corresponding to the multicast service, and whether the multicast service can be received by user equipment in an inactive RRC / CM state after activation. This avoids packet loss and additional losses for the UE due to the inability to determine the current activation status of the multicast service.

[0029] The first method provided is for activating MBS services, such as... Figure 1As shown, the method is executed by a network device and includes:

[0030] Generate indication information, which is used to indicate the current activation status of the multicast session corresponding to the multicast service, and / or to indicate whether the multicast service can be received by user equipment in the RRC inactive state or CM inactive state after activation;

[0031] Send instruction information to user equipment.

[0032] It also provides a method for activating MBS services, such as... Figure 2 As shown, the method is executed by the user equipment and includes:

[0033] Receive indication information from network devices; the indication information is used to indicate the current activation status of the multicast session corresponding to the multicast service, and / or the indication information is used to indicate whether the multicast service can be received by user equipment in the RRC inactive state or CM inactive state after activation;

[0034] In the RRC inactive state or CM inactive state, multicast services are received according to the instruction information.

[0035] In this process, the network device sends an indication message indicating the current activation status of the multicast session corresponding to the multicast service. Based on this indication message, the user equipment (UE) determines the current activation status of the multicast session corresponding to the indicated multicast service—whether it is active or deactivated—thus avoiding packet loss and additional overhead for the UE and improving user performance.

[0036] For example, in a system with a user equipment UE1, after UE1 transitions from RRC connected state to RRC / CM inactive state, the multicast session MBS Session1 of a multicast service MBS1 joined by UE1 is activated, changing from inactive to active. Based on existing technology, UE1, upon entering the RRC / CM inactive state, cannot obtain the current activation status of MBS Session1 and will still consider the already active MBS Session1 as inactive, thus failing to receive MBS1 data packets, resulting in data packet loss. Correspondingly, the technical solution provided in this patent can indicate the current activation status of the multicast session of the multicast service to the user equipment through indication information. Therefore, UE1, upon entering the RRC / CM inactive state, will promptly obtain the current activation status of MBS Session1, i.e., MBS Session1 is already active, and thus promptly receive MBS1 data packets.

[0037] For example, in a system with a user equipment UE1, after UE1 transitions from RRC connected state to RRC / CM inactive state, the multicast session MBS Session1 of the multicast service MBS1 that UE1 has joined becomes deactivated, changing from an active state to a deactivated state. Based on existing technology, UE1, upon entering the RRC / CM inactive state, cannot obtain the current active state of MBS Session1 and will still treat the already deactivated MBS Session1 as active, receiving MBS1 data even though there are actually no MBS1 data packets, thus causing additional overhead for UE1. Correspondingly, the technical solution provided in this patent can indicate the current active state of the multicast session of the multicast service to the user equipment through indication information. Therefore, UE1, upon entering the RRC / CM inactive state, will promptly obtain the current active state of MBS Session1, i.e., MBS Session1 is already in a deactivated state, and will therefore not receive MBS1 data packets, avoiding additional overhead for UE1.

[0038] The indication information sent by the network device can indicate whether a multicast service, after activation, can be received by user equipment (UE) in either the RRC inactive state or the CM inactive state (hereinafter referred to as RRC / CM inactive state). This allows UE to determine, based on the received indication information, whether the indicated multicast service can or cannot be received by the UE in the RRC / CM inactive state, thereby avoiding packet loss and additional overhead, and improving user performance. It should be noted that the indicated multicast service has a corresponding relationship with the UE; that is, when one or more UEs join a multicast service to jointly receive it, this patent indicates to the corresponding UE whether the multicast service can be received while the UE is in the RRC / CM inactive state. Furthermore, while the expressions "whether the multicast service can be received by the corresponding UE in the RRC / CM inactive state" and "whether the UE in the RRC / CM inactive state can receive the multicast service" are slightly different, they are essentially the same. In practice, they can usually be considered as a transmission attribute of the multicast service itself.

[0039] For example, in a system, there is a user equipment (UE1). After UE1 transitions from the RRC connected state to the RRC / CM inactive state, a multicast service MBS1 joined by UE1 can be received while UE1 is inactive. However, based on existing technology, UE1, upon entering the RRC / CM inactive state, cannot definitively determine whether MBS1 can be received while inactive, and may therefore consider MBS1 unreceiveable, leading to data packet loss. Correspondingly, the technical solution provided in this patent can indicate to the user equipment, through indication information, that the multicast service can be received while the user equipment is inactive. Thus, UE1, upon entering the RRC / CM inactive state, will promptly know that MBS1 can be received while inactive, enabling UE1 to receive MBS1 data packets in a timely manner.

[0040] For example, in a system with a user equipment UE1, after UE1 transitions from RRC connected state to RRC / CM inactive state, a multicast service MBS1 joined by UE1 cannot be received while UE1 is inactive. Based on existing technology, UE1, upon entering the RRC / CM inactive state, may assume MBS1 can be received and receive it because it cannot determine whether MBS1 can be received while inactive, even though there is actually no MBS1 data packet, resulting in additional losses for UE1. Correspondingly, the technical solution provided in this patent can indicate to the user equipment whether the multicast service can be received while the user equipment is inactive through indication information. Thus, UE1, upon entering the RRC / CM inactive state, will promptly know that MBS1 can be received while UE1 is in the RRC / CM inactive state and will not receive MBS1 data packets, avoiding additional losses for UE1.

[0041] The indication information sent by the network device can simultaneously indicate the active or deactivated state of the multicast session corresponding to the multicast service, as well as whether the multicast service can be received by user equipment in the RRC inactive or CM inactive state after activation. This allows the user equipment to determine the current active state of the multicast session corresponding to the indicated multicast service based on the received indication information, and also to determine the reception status of the indicated multicast service when the user equipment is in the RRC / CM inactive state. This can help avoid packet loss and additional losses for the user equipment and improve user performance.

[0042] It should be noted that the user equipment here includes mobile terminals, and the network equipment here includes base stations and core networks. The network equipment that directly sends the instruction information to the user equipment is usually the base station, while the network equipment that establishes a multicast session with the user equipment is usually the core network.

[0043] In one embodiment of the present invention, a multicast session may include all multicast sessions currently joined by the user equipment.

[0044] Specifically, the indication information can be used to indicate the current activation status of all multicast sessions corresponding to all multicast services joined by the user equipment (UE), i.e., whether they are currently active or inactive. It can also indicate whether all multicast services joined by the UE can be received by the UE in the RRC / CM inactive state, i.e., whether they can be received or not. Accordingly, after receiving the indication information, the UE can determine the activation status of all multicast sessions joined by the UE, and whether it can receive the corresponding multicast services when in the RRC / CM inactive state.

[0045] It should be emphasized here that all multicast sessions joined by the user equipment indicated by the indication information include both active and deactivated multicast sessions. The multicast services indicated by the indication information include multicast services that can be received by user equipment in the RRC / CM inactive state, as well as multicast services that cannot be received by user equipment in the RRC / CM inactive state.

[0046] In one embodiment of the present invention, a multicast session may include an active multicast session among all multicast sessions currently joined by the user equipment.

[0047] Specifically, the indication information can be used to indicate the activation status of all active multicast sessions among all multicast sessions corresponding to all multicast services joined by the user equipment, and can also indicate whether the multicast services corresponding to all active multicast sessions can be received by the user equipment in the RRC / CM inactive state, i.e., whether they can be received or not. Accordingly, after receiving the indication information, the user equipment can determine which multicast sessions are currently active among all multicast sessions joined by the user equipment, and whether the user equipment can receive the multicast services corresponding to the active multicast sessions after being in the RRC / CM inactive state.

[0048] In one embodiment of the present invention, a multicast session may include a multicast session that is inactive among all multicast sessions currently joined by the user equipment.

[0049] Specifically, the indication information can be used to indicate the activation status of all multicast sessions in the deactivated state among all multicast sessions corresponding to all multicast services joined by the user equipment, or it can indicate whether the multicast services corresponding to all deactivated multicast sessions can be received by the user equipment in the RRC / CM inactive state, i.e., whether they can be received or not. Accordingly, after receiving the indication information, the user equipment can determine which multicast sessions are currently in the deactivated state among all multicast sessions joined by the user equipment, and whether the user equipment can receive the multicast services corresponding to the deactivated multicast sessions after entering the RRC / CM inactive state.

[0050] In one embodiment of the present invention, a multicast session may include a portion of the multicast sessions currently joined by the user equipment.

[0051] Specifically, the indication information can be used to indicate the activation status of a portion of the multicast session corresponding to a certain multicast service joined by a user equipment, or it can indicate whether the portion of the multicast service can be received by a user equipment in an inactive RRC / CM state, i.e., whether it can be received or not. Accordingly, after receiving the indication information, the user equipment can determine whether the portion of the multicast session joined by the user equipment is currently in an active or deactivated state, and whether the user equipment can receive the portion of the multicast service when it is in an inactive RRC / CM state.

[0052] In one embodiment of the present invention, a multicast session may include all multicast sessions configured by the network device.

[0053] Specifically, the indication information can be used to indicate the current activation status of all multicast sessions corresponding to all multicast services configured by the network device, i.e., whether they are currently in an active or deactivated state. It can also indicate whether all multicast services configured by the network device can be received by the corresponding user equipment in an inactive RRC / CM state, i.e., whether they can be received or not. Accordingly, after receiving the indication information, the user equipment can determine the activation status of all multicast sessions configured by the network device, and whether it can receive the multicast services configured by the network device when it is in an inactive RRC / CM state.

[0054] It is important to emphasize here that all multicast sessions configured on the network devices indicated by the instruction information include both active and deactivated multicast sessions. The multicast services indicated by the instruction information include those that can be received by corresponding user equipment (UEs) in an inactive RRC / CM state, as well as those that cannot be received by UEs in an inactive RRC / CM state. It is further important to emphasize that UEs and multicast services have a corresponding receiving relationship; UEs join and receive corresponding multicast sessions. Therefore, if a UE does not receive a certain multicast service, even if that multicast service is receivable by a UE in an inactive RRC / CM state and the corresponding multicast session is currently active, that UE will not receive that multicast service if it does not wish to receive it.

[0055] In one embodiment of the present invention, a multicast session may include an active multicast session among all multicast sessions configured by the network device.

[0056] Specifically, the indication information can be used to indicate the activation status of all active multicast sessions among all multicast sessions corresponding to all multicast services configured on the network device, and can also indicate whether the multicast services corresponding to all active multicast sessions can be received by the corresponding user equipment in the inactive state of RRC / CM, i.e., whether they can be received or not. Accordingly, after receiving the indication information, the corresponding user equipment can determine the currently active multicast sessions among all multicast sessions configured on the network device, and whether it can receive the corresponding multicast services after the user equipment is in the inactive state of RRC / CM.

[0057] In one embodiment of the present invention, a multicast session may include a multicast session that is in an inactive state among all multicast sessions configured by the network device.

[0058] Specifically, the indication information can be used to indicate the activation status of all multicast sessions in the deactivated state among all multicast sessions corresponding to all multicast services configured by the network device, or it can indicate whether the multicast services corresponding to all deactivated multicast sessions can be received by the corresponding user equipment in the RRC / CM inactive state, i.e., whether they can be received or not. Accordingly, after receiving the indication information, the corresponding user equipment can determine which multicast sessions are currently in the deactivated state among all multicast sessions configured by the network device, and whether the user equipment can receive the corresponding multicast services after being in the RRC / CM inactive state.

[0059] In one embodiment of the present invention, a multicast session may include a portion of the multicast session configured by the network device.

[0060] Specifically, the indication information can be used to indicate the activation status of a partial multicast session corresponding to a certain multicast service configured by the network device, or it can indicate whether the multicast service corresponding to a certain multicast session can be received by the corresponding user equipment in the RRC / CM inactive state, i.e., whether it can be received or not. Accordingly, after receiving the indication information, the corresponding user equipment can determine whether the multicast session currently in the deactivated state of the partial multicast session configured by the network device is inactive, and whether the user equipment can receive the corresponding multicast service after being in the RRC / CM inactive state.

[0061] In one embodiment of the present invention, in the sent indication information, the total number of bits in the information portion used to indicate the current active state of the multicast session is the number of multicast sessions, and each bit is assigned a value of 0 or 1 to indicate that each corresponding multicast session is in an active state or a deactivated state.

[0062] In one embodiment of the present invention, in the received indication information, the total number of bits in the information portion used to indicate the current active state of the multicast session is the number of multicast sessions, and each bit is assigned a value of 0 or 1 to indicate that each corresponding multicast session is in an active state or a deactivated state.

[0063] Specifically, the bits in the indication information correspond one-to-one with the multicast sessions indicated according to a preset sorting order, either in order from most significant bit to least significant bit or from least significant bit to most significant bit.

[0064] Specifically, for the part of the indication information that indicates the activation status of the multicast session, the first assignment method can be used, and the assignment method is as follows:

[0065] When the value is set to 0, the multicast session corresponding to the indicator bit is in an active state.

[0066] When the value is set to 1, the multicast session corresponding to the indicator bit is in a deactivated state.

[0067] Specifically, for the part of the indication information that indicates the activation status of the multicast session, a second assignment method can also be used, which is as follows:

[0068] When the value is set to 0, the multicast session corresponding to the indicator bit is in a deactivated state.

[0069] When the value is set to 1, it indicates that the multicast session corresponding to the indicator bit is in an active state.

[0070] In one embodiment of the present invention, the information portion of the transmitted indication information used to indicate the active state and / or deactivated state of the multicast session includes Session ID or TMGI or G-RNTI or MRB ID, to indicate that the corresponding multicast session is in an active state and / or deactivated state.

[0071] In one embodiment of the present invention, the received indication information includes a portion of information indicating the active and / or deactivated state of a multicast session, which includes a Session ID, TMGI, G-RNTI, or MRB ID, to indicate that the corresponding multicast session is in an active and / or deactivated state.

[0072] Specifically, for the part of the indication information that indicates the activation status of the multicast session, a third assignment method can be used, which is as follows:

[0073] The indication information includes the Session ID, TMGI, G-RNTI, or MRB ID of the active multicast session to indicate that the corresponding multicast session is active.

[0074] For the part of the indication information that indicates the activation status of the multicast session, a fourth assignment method can also be used, which is as follows:

[0075] The indication information includes the Session ID, TMGI, G-RNTI, or MRB ID of the multicast session in the deactivated state, to indicate that the corresponding multicast session is in the deactivated state.

[0076] Specifically, for the part of the indication information that indicates the activation status of the multicast session, a fifth assignment method can also be used, which is as follows:

[0077] The indication information includes the Session ID, TMGI, G-RNTI, or MRB ID of the multicast session in the active and deactivated states, with the part indicating the corresponding multicast session in the active state first and the part indicating the corresponding multicast session in the deactivated state second.

[0078] Specifically, for the part of the indication information that indicates the activation status of the multicast session, a sixth assignment method can also be used, which is as follows:

[0079] The indication information includes the Session ID, TMGI, G-RNTI, or MRB ID of the multicast session in the active and deactivated states, with the deactivated state indicated first and the active state indicated later.

[0080] In one embodiment of the present invention, in the transmitted indication information, the total number of bits in the information portion used to indicate whether the multicast service can be received by a user equipment in the RRC / CM inactive state after activation is equal to the number of multicast sessions. Each bit is assigned a value of 0 or 1 to indicate whether each corresponding multicast session can be received by a user equipment in the RRC / CM inactive state after activation, or cannot be received by a user equipment in the RRC / CM inactive state.

[0081] In one embodiment of the present invention, in the received indication information, the total number of bits in the information portion used to indicate whether the multicast service can be received by a user equipment in the RRC / CM inactive state after activation is equal to the number of multicast sessions. Each bit is assigned a value of 0 or 1 to indicate whether each corresponding multicast session can be received by a user equipment in the RRC / CM inactive state after activation, or cannot be received by a user equipment in the RRC / CM inactive state.

[0082] Specifically, the bits in the indication information correspond one-to-one with the multicast sessions indicated in a preset sorting order, either from high bit to low bit or from low bit to high bit.

[0083] Specifically, for the part of the indication information that specifies whether multicast services can be received in an inactive state, the seventh assignment method can be used, and the assignment method is as follows:

[0084] When the value is set to 0, it indicates that the multicast session corresponding to the indicator bit can be received by user equipment in the RRC / CM inactive state.

[0085] When the value is set to 1, it indicates that the multicast session corresponding to the indicator bit cannot be received by user equipment in the RRC / CM inactive state.

[0086] Among them, for the part of the indication information that indicates whether the multicast service can be received in an inactive state, the eighth assignment method can also be used, and the assignment method is as follows:

[0087] When the value is set to 0, it indicates that the multicast session corresponding to the indicator bit cannot be received by user equipment in the RRC / CM inactive state.

[0088] When the value is set to 1, it indicates that the multicast session corresponding to the indicator bit can be received by user equipment in the RRC / CM inactive state.

[0089] In one embodiment of the present invention, the transmitted indication information may include only an information portion indicating the current active state of the multicast session; or it may include only an information portion indicating whether the multicast service can be received by a user equipment in an RRC / CM inactive state after activation; or it may include an information portion indicating the current active state of the multicast session and an information portion indicating whether the multicast service can be received by a user equipment in an RRC / CM inactive state after activation.

[0090] In one embodiment of the present invention, the received indication information may include only an information portion indicating the current active state of the multicast session; or it may include only an information portion indicating whether the multicast service can be received by a user equipment in an RRC / CM inactive state after activation; or it may include an information portion indicating the current active state of the multicast session and an information portion indicating whether the multicast service can be received by a user equipment in an RRC / CM inactive state after activation.

[0091] It should be noted that when the indication information includes both a portion indicating the current active state of the multicast session and a portion indicating whether the multicast service can be received by user equipment in the RRC / CM inactive state after activation: For the assignment of the portion indicating the current active state of the multicast session, the method can be either assigning a value of 0 or 1 to each bit to indicate whether each corresponding multicast session is in an active or inactive state, or assigning a value containing the Session ID, TMGI, G-RNTI, or MRB ID to indicate whether the corresponding multicast session is in an active or inactive state; For the composition of the portion indicating the active state of the multicast session and the portion indicating whether the activated multicast service can be received by user equipment in the RRC / CM inactive state, the two portions can be combined independently or mixed together.

[0092] For example, when a user equipment (UE) is currently enrolled in seven multicast service sessions (MBSSession1, MBSS Session2, ..., MBSS7), where the first two MBSs are active and can be received by UEs in an inactive RRC / CM state, and the latter five MBSs are deactivated and cannot be received by UEs in an inactive RRC / CM state after activation, the network device can send the following indication information to the UE, and the UE can receive the following indication information from the network device:

[0093] Firstly, regarding the information portion of the indication message used to indicate the activation status of the multicast session:

[0094] If the first assignment method is used, it is represented as "1111100"; if the second assignment method is used, it is represented as "0000011". Here, the representation is based on the bits from low to high and the MBS session in ascending order of ID. In actual expression, it can also be represented by the bits from low to high and the MBS session in descending order of ID.

[0095] If the third assignment method described above is used, and the information portion includes the ID of the active MBS Session, the indication information includes "010" and "001", which can be represented as "010 001" (arranged in ascending order of MBS session ID). Correspondingly, the data structure can be represented as follows:

[0096] MBS-SessionIDActive list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionIDActive

[0097] Where MBS-SessionIDActive is the ID of the currently active MBS Session;

[0098] If the fourth assignment method described above is used, and the information portion includes the ID of the MBS Session in the deactivated state, with the indication information including "011", "100", "101", "110", and "111", it can be represented as "111 110 101 100 011" (arranged in ascending order of MBS session ID). Correspondingly, the data structure can be represented as follows:

[0099] MBS-SessionIDInactive list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionIDInactive

[0100] Wherein, MBS-SessionIDInactive is the ID of the MBS Session that is currently in an inactive state;

[0101] If the fifth assignment method described above is used, the indication information includes "010 001" and "111 110 101 100011". The "010 001" indicates that its corresponding MBS Session1 and MBSsession2 are active, while the "111 110 101 100 011" indicates that its corresponding MBS Session3, MBSsession4, MBSsession5, MBSsession6, and MBSsession7 are deactivated. Accordingly, the data structure can be represented as follows:

[0102] MBS-SessionIDActive list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionIDactive

[0103] MBS-SessionIDInactive list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionIDInactive

[0104] Where MBS-SessionIDActive is the ID of the currently active MBS Session.

[0105] Wherein, MBS-SessionIDInactive is the ID of the MBS Session that is currently in an inactive state;

[0106] If the sixth assignment method described above is used, the indication information includes "111 110 101 100 011" and "010001". The first "111 110 101 100 011" indicates that the corresponding MBS Session3, MBSsession4, MBSsession5, MBSsession6, and MBSsession7 are in a deactivated state, and the second "010 001" indicates that the corresponding MBS Session1 and MBSsession2 are in an active state. Accordingly, the data structure can be represented as follows:

[0107] MBS-SessionIDInActive list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionIDInactive

[0108] MBS-SessionIDActive list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionIDActive

[0109] Where MBS-SessionIDInactive is the ID of the MBS Session that is currently inactive.

[0110] Where MBS-SessionIDActive is the ID of the currently active MBS Session;

[0111] In this assignment method, the order of active multicast sessions can be in ascending or descending order of MBS session ID, and the order of deactivated multicast sessions can also be in ascending or descending order of MBS session ID.

[0112] Secondly, regarding the part of the indication information that specifies whether multicast services can be received by user equipment in an inactive RRC / CM state:

[0113] The seventh assignment method mentioned above can be used, which is represented as "1111100"; the eighth assignment method mentioned above can also be used, which is represented as "0000011". Here, the representation method is used to correspond the bits from low to high and the MBS session in ascending order of ID. In actual expression, the representation method can also be used to correspond the bits from low to high and the MBS session in descending order of ID.

[0114] Thirdly, for the information portion indicating the active state of the multicast session and the information portion indicating whether the multicast service can be received by user equipment in an inactive RRC / CM state, the two information portions can be combined independently:

[0115] If the first and seventh assignment methods are used, which include "1111100" and "1111100", it is represented as "1111100 1111100". Alternatively, the second and eighth assignment methods can be used, which include "0000011" and "0000011", and are represented as "0000011 0000011".

[0116] If the third and seventh assignment methods are used, including "010", "001", and "00", it is represented as "001 010 00". Alternatively, the fourth and eighth assignment methods can be used, including "011", "100", "101", "110", "111", and "11111", representing "111 110 101 100 011 11111". The fifth and seventh assignment methods can also be used, including "010 001", "111 110 101 100 011", and "1111100", representing "010 001 111 110 101 100 011 1111100". Finally, the sixth and eighth assignment methods can be used, including "111 110 101 100". "011", "010 001" and "0000011" are represented as "111 110101 100 011 010 001 0000011";

[0117] Here, the active status information is presented first, followed by the receivable information. In fact, there is also a combination where the active status information is presented last, followed by the receivable information. Furthermore, the multicast sessions and multicast services are arranged in ascending order of MBS session ID, but they can also be arranged in descending order of MBS session ID.

[0118] Fourth, for the information portion indicating the active state of the multicast session and the information portion indicating whether the multicast service can be received by user equipment in the inactive state of RRC / CM contained in the indication information, the two information portions can be mixed together:

[0119] The instruction information can be assigned using the first and seventh assignment methods, including "1111100" and "1111100", which can be mixed and represented as "11 11 11 11 11 11 11 00 00". Alternatively, it can be assigned using the second and eighth assignment methods, including "0000011" and "0000011", which can be mixed and represented as "10 10 10 10 10 10 01 01". In these cases, the active status information comes first, followed by the information on whether the message can be received.

[0120] The fifth and seventh assignment methods can also be used, including "010 001 111 110 101 100011" and "1111100", which can be represented as "0100 0010 1111 1101 1011 1001 0111" (the bit elements of the active state information part come first, and the bit elements of the receivable information part come last. In the first two groups, the first three bits of information all indicate that the multicast session corresponding to the session ID is in an active state, and the last bit indicates that the multicast service can be received by the inactive user equipment after activation. In the last five groups, the first three bits of information all indicate that the multicast session corresponding to the session ID of the multicast service is in a deactivated state, and the last bit indicates that the multicast service cannot be received by the inactive user equipment after activation). Accordingly, the data structure can be expressed as follows:

[0121] mbs-SessionConfig1 list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionConfig1

[0122] mbs-SessionConfig1 ::=SEQUENCE {

[0123] MBS-SessionIDactive

[0124] mbs-Receive

[0125] }

[0126] mbs-SessionConfig2 list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionConfig2

[0127] mbs-SessionConfig2::=SEQUENCE {

[0128] MBS-SessionIDInactive

[0129] mbs-Receive

[0130] }

[0131] mbs-SessionConfig1 list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionConfig1

[0132] mbs-SessionConfig1 ::=SEQUENCE {

[0133] MBS-SessionIDactive

[0134] mbs-Receive

[0135] }

[0136] mbs-SessionConfig2 list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionConfig2

[0137] mbs-SessionConfig2 ::=SEQUENCE {

[0138] MBS-SessionIDInactive

[0139] mbs-Receive

[0140] }

[0141] MBS-SessionIDActive list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionIDactive

[0142] MBS-SessionIDInactive list ::=SEQUENCE (SIZE (1..maxMBS-Session)) OFMBS-SessionIDInactived

[0143] Among them, MBS-SessionIDActive is the ID of the currently active MBS Session.

[0144] Where MBS-SessionIDInactive is the ID of the MBS Session that is currently inactive.

[0145] Among them, mbs-Receive indicates whether the multicast service can be received by a user equipment in the inactive state of RRC / CM after activation;

[0146] The sixth and seventh assignment methods can be used, including "111 110 101 100 011 010001" and "1111100", which can be represented as "1111 1101 1011 1001 0111 0100 0010" (the bits of the active state information part come first, and the bits of the receivable information part come last. In the first 5 groups, the first 3 bits of information all indicate that the multicast session corresponding to the session ID is in an active state, and the last bit indicates that the multicast service can be received by the inactive user equipment after activation. In the last 2 groups, the first 3 bits of information all indicate that the multicast session corresponding to the session ID of the multicast service is in a deactivated state, and the last bit indicates that the multicast service cannot be received by the inactive user equipment after activation).

[0147] The representation used here is that the bit elements of the active state information part come first, followed by the bit elements of the unreceivable information part. In actual operation, there are also various mixed composition methods, such as the bit elements of the active state information part coming last and the bit elements of the unreceivable information part coming first, which will not be listed here.

[0148] It should be noted that the indication information may be carried in some other information, such as MRB configuration information. Therefore, the information elements in the indication information may present a continuous and complete stream of 0 / 1 bits, or they may be located in different, discontinuous, and discontinuous information blocks. Accordingly, the indication information can be regarded as being presented by corresponding information elements located in different positions.

[0149] It should be further noted that the indication information can indicate the activation status of all or part of the multicast sessions joined by the user equipment, and whether all or part of the multicast services received by the user equipment can be received in the inactive state of RRC / CM. It can also indicate the activation status of all or part of the multicast sessions configured by the network device, and whether all or part of the multicast services configured by the network device can be received in the inactive state of RRC / CM.

[0150] In one embodiment of the present invention, the process of sending indication information to a user equipment includes:

[0151] Send a paging message to the user equipment; the paging message carries instruction information.

[0152] In one embodiment of the present invention, the process of receiving indication information from a network device includes:

[0153] Receive paging messages from network devices; obtain the indication information carried in the paging messages.

[0154] Specifically, the paging message carries indication information to indicate whether the multicast session corresponding to the multicast service is currently in an active or deactivated state, and whether the multicast service can be received when the corresponding user equipment is in an inactive state.

[0155] In one embodiment of the present invention, during the process of the network device sending a paging message carrying indication information to the user equipment:

[0156] The PDCCH uses G-RNTI to scramble and schedule paging messages. The paging message carries indication information to indicate whether the multicast session corresponding to G-RNTI is in an active or deactivated state, and / or to indicate whether the multicast service corresponding to G-RNTI can be received by user equipment in an inactive RRC / CM state after activation.

[0157] In one embodiment of the present invention, during the process of a user equipment receiving a paging message carrying indication information from a network device:

[0158] Listen to the PDCCH scrambled by G-RNTI, receive paging messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the paging messages to indicate the current active state of the multicast session corresponding to G-RNTI, and / or indicate whether the multicast service corresponding to G-RNTI can be received by user equipment in the inactive state of RRC or CM after activation.

[0159] Specifically, network devices use G-RNTI to scramble the PDCCH of scheduling paging messages. User equipment listens to the PDCCH scrambled by G-RNTI, receives paging messages according to the scheduling information in the PDCCH, and then obtains the indication information carried in the paging message. This allows the user equipment to determine whether the multicast session corresponding to G-RNTI is currently in an active or deactivated state, and whether it can receive the multicast service corresponding to G-RNTI when the user equipment is in an inactive state of RRC / CM.

[0160] It should be emphasized that the part of the indication information at this time that indicates the activation status of the multicast session is used to indicate the activation status of the G-RNTI multicast session, while the part that indicates whether the multicast service can be received by the user equipment in the inactive state of RRC / CM is used to indicate the reception status of the G-RNTI multicast service.

[0161] The indication information can be assigned in various ways. The part indicating the active status of the multicast session corresponding to G-RNTI can be assigned in ways 1 to 6 above. The part indicating whether the multicast service corresponding to G-RNTI can be received by the user equipment in the inactive state of RRC / CM can be assigned in ways 7 to 8 above. The two parts can be combined independently or mixed together.

[0162] For example, if User Equipment 1 is currently enrolled in a multicast service MBS1, and the multicast session MBS session1 of MBS1 is active, and MBS1 can be received by UE1 which is in an inactive RRC / CM state, the network device can generate indication information, so that the paging information carries the indication information, and use G-RNTI1 to scramble the PDCCH of the paging message. Accordingly, the user equipment listens to the PDCCH scrambled by G-RNTI, and receives the paging message according to the scheduling information in the PDCCH in order to receive the indication information.

[0163] The instruction message can be as follows:

[0164] The indication information may include a part indicating that the MBS session 1 corresponding to G-RNTI1 is in an active state. The indication information may be represented as "0" using the first assignment method, so that UE1 can know that the MBS session 1 corresponding to G-RNTI1 is currently in an active state.

[0165] The indication information may include information indicating whether the MBS1 corresponding to G-RNTI1 can be received by UE1 in the RRC / CM inactive state. The indication information can be represented as "0" using the seventh assignment method so that UE1 can know that the MBS corresponding to G-RNTI1 can be received by UE1 in the RRC / CM inactive state.

[0166] The indication information may include a portion indicating that the MBS session 1 corresponding to G-RNTI1 is in an active state, and a portion indicating whether the MBS1 corresponding to G-RNTI1 can be received by UE1 in an inactive RRC / CM state. The indication information may be represented as "00" using the first assignment method and the seventh assignment method (wherein, the portion indicating the active state of the multicast session comes first, and the portion indicating whether the multicast service can be received by the user equipment in an inactive RRC / CM state comes later), so that UE1 can clearly understand that the MBS session 1 corresponding to G-RNTI1 is currently in an active state, and that the MBS corresponding to G-RNTI1 can be received by UE1 in an inactive RRC / CM state.

[0167] In one embodiment of the present invention, during the process of the network device sending a paging message carrying indication information to the user equipment:

[0168] The PDCCH uses P-RNTI scrambling to schedule paging messages. The paging message carries indication information to indicate the active and / or deactivated states of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC / CM inactive state after activation.

[0169] In one embodiment of the present invention, during the process of a user equipment receiving a paging message carrying indication information from a network device:

[0170] Listen to the PDCCH scrambled by P-RNTI, receive paging messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the paging messages to indicate the current activation status of the multicast session configured by the network device, and / or indicate whether the multicast service corresponding to G-RNTI can be received by user equipment in the RRC or CM inactive state after activation.

[0171] Specifically, the network device uses P-RNTI to scramble the PDCCH of the paging message. The user equipment listens to the P-RNTI-scrambled PDCCH, receives the paging message according to the scheduling information in the PDCCH, and then obtains the indication information carried in the paging message. This enables the user equipment to determine whether all multicast sessions configured by the network device are currently in an active or deactivated state, and whether all multicast services configured by the network device can be received by user equipment in an inactive RRC / CM state.

[0172] The indication information can be assigned in various ways. The part indicating the active status of all multicast sessions configured on the network device can be assigned in ways 1 to 6 above. The part indicating whether all multicast services configured on the network device can be received by user equipment in the inactive state of RRC / CM can be assigned in ways 7 to 8 above.

[0173] For example, the network device is configured with three multicast services: MBS1, MBS2, and MBS3. 3， The multicast session MBSsession1 of MBS1 is in an active state and can be received by UE1 in an inactive RRC / CM state. The multicast sessions MBSsession2 and MBSsession3 of MBS2 and MBS3 are in an inactive state and cannot be received by UE2 in an inactive RRC / CM state. The network device can generate indication information, so that the paging information carries the indication information. The PDCCH of the scheduling paging message is scrambled using P-RNTI. Correspondingly, the user equipment listens to the PDCCH scrambled by P-RNTI and receives the paging message according to the scheduling information in the PDCCH to receive the indication information.

[0174] The instruction message can be as follows:

[0175] The indication information may include information indicating the current active state of MBS session1, MBS session2 and MBS session3. The indication information may be represented by the first assignment method as "110", the second assignment method as "001", or the sixth assignment method as "011 010 001", so that UE1 knows that MBS session1 is currently active and UE2 knows that MBS session2 and MBS session3 are currently deactivated.

[0176] The indication information may include information indicating whether MBS1, MBS2 and MBS3 can be received by user equipment (UE1 or UE2) in the corresponding RRC / CM inactive state. The indication information can be represented by the seventh assignment method as "110" or by the eighth assignment method as "001", so that UE1 can be made aware that MBS1 can be received by UE1 in the RRC / CM inactive state, and UE2 can be made aware that MBS2 and MBS3 cannot be received by UE2 in the RRC / CM inactive state.

[0177] The indication information may include a portion indicating that the MBS session 1 corresponding to G-RNTI1 is in an active state, and a portion indicating whether the MBS1 corresponding to G-RNTI1 can be received by UE1, which is in an inactive RRC / CM state.

[0178] The indication information can be a combination of the first and seventh assignment methods. "110" and "110" can be combined independently as "110 110" (where the part indicating the active state of the multicast session comes first, and the part indicating whether the multicast service can be received by the inactive user equipment of RRC / CM comes second; the two parts are combined independently, and the bits of the two parts are ordered from high to low according to MBS ID). Alternatively, they can be mixed together as "11 11 00" (where the part indicating the active state of the multicast session comes first, and the part indicating whether the multicast service can be received by the inactive user equipment of RRC / CM comes second; the two parts are mixed together, and the combination formed by the mixture is ordered from high to low according to MBS ID; the lowest bit combination "00" indicates MBS1, and the middle and highest bit combination "11" indicates MBS2 and MBS3).

[0179] Alternatively, a combination of the sixth and seventh assignment methods can be used. "011 010001" and "110" can be independently combined, represented as "011 010 001 110" (where the part indicating the active state of the multicast session comes first, followed by the part indicating whether the multicast service can be received by inactive RRC / CM user equipment; the two parts are combined independently, and the bits of the two parts are ordered from high to low according to MBS ID). Alternatively, "011 010 001" and "110" can be mixed together, represented as "0111 0101 0010" (where the part indicating the active state of the multicast session comes first, followed by the part indicating whether the multicast service can be received by inactive RRC / CM user equipment; the two parts are mixed together, and the combination of the two parts is ordered according to MBS ID). The IDs are ordered in ascending order, where "0010" indicates that the active state of MBS1 corresponding to "001" is set to "0", indicating that it is in an active state (the same applies to others). This allows UE1 to know that MBS session 1 is currently in an active state and that MBS1 can be received by UE1, which is in an inactive state in RRC / CM. It also allows UE2 to know that MBS session 2 and MBS session 3 are currently in an active state and that MBS2 and MBS3 can be received by UE2, which is in an inactive state in RRC / CM.

[0180] In one embodiment of the present invention, the process of sending indication information to a user equipment includes:

[0181] Send a proprietary message carrying indication information to the user equipment to directly send the indication information.

[0182] In one embodiment of the present invention, the process of receiving indication information from a network device includes:

[0183] Receive proprietary messages carrying indication information to directly receive the indication information.

[0184] Specifically, the proprietary message carries indication information to indicate whether the multicast session corresponding to the multicast service is currently in an active or deactivated state, and whether the multicast service can be received when the corresponding user equipment is in an inactive state.

[0185] Among them, proprietary information may contain only instruction information, or it may contain instruction information and other information.

[0186] The indication information can be assigned in various ways. The part indicating the active status of all multicast sessions configured on the network device can be assigned in ways 1 to 6 above. The part indicating whether all multicast services configured on the network device can be received by user equipment in the inactive state of RRC / CM can be assigned in ways 7 to 8 above.

[0187] In one embodiment of the present invention, during the process of a network device sending a proprietary message carrying indication information to a user equipment:

[0188] The PDCCH uses C-RNTI to scramble the dedicated scheduling message. C-RNTI corresponds to the user equipment. The dedicated message carries indication information, which is used to indicate the active and / or deactivated state of the multicast sessions (all or part) joined by the user equipment; and / or to indicate whether the multicast services (all or part) joined by the user equipment can be received by the user equipment in the RRC / CM inactive state after activation.

[0189] In one embodiment of the present invention, during the process of a user equipment receiving a proprietary message containing bearer indication information from a network device:

[0190] Listen to the PDCCH scrambled by C-RNTI, receive dedicated messages based on the scheduling information in the PDCCH, and obtain the indication information carried in the dedicated messages to indicate the current active state of the multicast session joined by the user equipment; and / or indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0191] Specifically, network devices use C-RNTI to scramble the PDCCH of dedicated scheduling messages. User equipment listens to the PDCCH scrambled by C-RNTI, receives dedicated messages based on the scheduling information in the PDCCH, and then obtains the indication information carried in the dedicated messages. This enables user equipment to determine whether all multicast sessions joined by user equipment are currently in an active or deactivated state, and whether all joined multicast services can be received by user equipment in an inactive RRC / CM state.

[0192] The indication information can be assigned in various ways. The part indicating the activation status of all multicast sessions joined by the user equipment can be assigned in the first to sixth ways mentioned above. The part indicating whether the user equipment can receive multicast services joined by the user equipment when it is in the RRC / CM inactive state can be assigned in the seventh to eighth ways mentioned above. The two parts can be combined independently or mixed together.

[0193] For example, if User Equipment 1 currently joins two multicast services MBS1 and MBS2, and MBS1's multicast session MBSsession1 is in an active state and can be received by UE1 in an inactive RRC / CM state, while MBS2's multicast session MBSsession2 is in an inactive state and cannot be received by UE1 in an inactive RRC / CM state: the network device can generate indication information, make the proprietary information carry the indication information, and use the PDCCH scrambled with the proprietary message corresponding to C-RNTI1 of User Equipment 1. Accordingly, UE1 listens to the PDCCH scrambled with C-RNTI1 and receives the proprietary message according to the scheduling information in the PDCCH to receive the indication information.

[0194] The instruction message can be as follows:

[0195] The indication information may include information indicating the current active state of MBS session1 and MBS session2. The indication information may be represented by the first assignment method as "10" or by the second assignment method as "01". The bits here correspond to the MBS ID in descending order from high to low, so that UE1 can clearly know that MBS session1 is currently in the active state and MBS session2 is in the deactivated state.

[0196] The indication information may include information indicating whether MBS1 and MBS2 can be received by UE1 in the RRC / CM inactive state. The indication information can be represented as "10" in the seventh assignment method, where the bits correspond to the MBS ID in descending order from high to low. It can also be represented as "01" in the eighth assignment method, so that UE1 knows that MBS1 can be received and MBS2 cannot be received when UE1 is in the RRC / CM inactive state.

[0197] The indication information may include a portion indicating the current active state of MBS session1 and MBS session2, and a portion indicating whether MBS1 and MBS2 can be received by UE1, which is in an inactive RRC / CM state. The indication information can be represented as "10 10" using the first and seventh assignment methods (where the portion indicating the active state of the multicast session comes first, followed by the portion indicating whether the multicast service can be received by a user equipment in an inactive RRC / CM state; these are independent combinations of the two portions, with the bits of the two portions ordered from high to low according to the MBS ID). Alternatively, it can be represented as "10 01" using the first and eighth assignment methods (where the portion indicating the active state of the multicast session comes first, followed by the portion indicating whether the multicast service can be received by a user equipment in an inactive RRC / CM state; these two portions are independent combinations, with the bits of the two portions ordered from high to low according to the MBS ID). This is used to indicate to UE1, MBS... Session 1 is currently active and MBS1 can be received by UE1, which is inactive in RRC / CM. MBSsession 2 is inactive and MBS2 cannot be received by UE1, which is inactive in RRC / CM.

[0198] In one embodiment of the present invention, during the process of a network device sending a proprietary message carrying indication information to a user equipment:

[0199] The PDCCH using G-RNTI scrambled scheduling proprietary messages indicates the active and / or deactivated state of the multicast session corresponding to G-RNTI, and / or whether the multicast service corresponding to G-RNTI can be received by user equipment in the inactive state of RRC / CM after activation.

[0200] In one embodiment of the present invention, during the process of a user equipment receiving a proprietary message containing bearer indication information sent from a network device:

[0201] Listen to the PDCCH scrambled by G-RNTI, receive dedicated messages according to the scheduling information in the PDCCH, and obtain the indication information carried by the dedicated messages to indicate the current active state of the multicast session corresponding to G-RNTI, and / or indicate whether the multicast service corresponding to G-RNTI can be received by user equipment in the inactive state of RRC or CM after activation.

[0202] Specifically, network devices use G-RNTI to scramble the PDCCH of dedicated scheduling messages. User equipment listens to the PDCCH scrambled by G-RNTI, receives dedicated messages based on the scheduling information in the PDCCH, and then obtains the indication information carried in the dedicated messages. This enables user equipment to determine whether all multicast sessions configured by the network device are currently in an active or deactivated state, and whether all multicast services configured by the network device can be received by user equipment in an inactive RRC / CM state.

[0203] The indication information can be assigned in various ways. The part indicating the active status of all multicast sessions configured on the network device can be assigned in ways 1 to 6 above. The part indicating whether all multicast services configured on the network device can be received by user equipment in the inactive state of RRC / CM can be assigned in ways 7 to 8 above.

[0204] For example, if User Equipment 1 (UE1) is currently enrolled in a multicast service MBS1, and the multicast session MBS session 1 of MBS1 is active, and MBS1 can be received by UE1 which is in an inactive RRC / CM state, the network device can generate indication information, enabling the dedicated message to carry the indication information, and using G-RNTI1 to scramble the PDCCH of the dedicated message. Correspondingly, UE1 listens to the PDCCH scrambled by G-RNTI1 and receives the dedicated message according to the scheduling information in the PDCCH to receive the indication information.

[0205] The instruction message can be as follows:

[0206] The indication information may include a part indicating that the MBS session 1 corresponding to G-RNTI1 is in an active state. The indication information may be represented as "0" using the first assignment method, so that UE1 can know that the MBS session 1 corresponding to G-RNTI1 is currently in an active state.

[0207] The indication information may include information indicating whether the MBS1 corresponding to G-RNTI1 can be received by UE1 in the RRC / CM inactive state. The indication information can be represented as "0" using the seventh assignment method so that UE1 can know that the MBS corresponding to G-RNTI1 can be received by UE1 in the RRC / CM inactive state.

[0208] The indication information may include a portion indicating that the MBS session 1 corresponding to G-RNTI1 is in an active state, and a portion indicating whether the MBS1 corresponding to G-RNTI1 can be received by UE1 in an inactive RRC / CM state. The indication information may be represented as "00" using the first assignment method and the seventh assignment method (wherein, the portion indicating the active state of the multicast session comes first, and the portion indicating whether the multicast service can be received by the user equipment in an inactive RRC / CM state comes later), so that UE1 can clearly understand that the MBS session 1 corresponding to G-RNTI1 is currently in an active state, and that the MBS corresponding to G-RNTI1 can be received by UE1 in an inactive RRC / CM state.

[0209] In one embodiment of the present invention, during the process of a network device sending a proprietary message carrying indication information to a user equipment:

[0210] The PDCCH of the scheduling proprietary message is scrambled with a specific scrambling code that can be recognized by all user equipment. The indication information is used to indicate the active and / or deactivated state of all multicast sessions configured by the network equipment, and / or to indicate whether each multicast service configured by the network equipment can be received by user equipment in the inactive state of RRC / CM after activation.

[0211] In one embodiment of the present invention, during the process of a user equipment receiving a proprietary message carrying indication information sent from a network device:

[0212] Listen to the PDCCH scrambled with a specific scrambling code, receive proprietary messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the proprietary messages to indicate the current activation status of all multicast sessions configured by the network device, and / or indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

[0213] Specifically, a specific scrambling code, such as M-RNTI, is used. This scrambling code can be listened to by all user equipment (UEs). Network devices use M-RNTI to scramble the PDCCH (Programmable Distributed Communication Council) messages scrambled by scheduling proprietary messages. All UEs can listen to the M-RNTI-scrambled PDCCH, receive proprietary messages based on the scheduling information in the PDCCH, and then obtain the indication information carried in the proprietary messages. This allows UEs to determine whether all multicast sessions configured by the network device are currently in an active or deactivated state, and whether all multicast services configured by the network device can be received by UEs in an inactive RRC / CM state. It should be noted that only one scrambling code, M-RNTI, which can be listened to by all UEs, is mentioned here. There are other scrambling codes that can be listened to by all UEs, such as SI-RNTI and P-RNTI, but they are not specifically limited here.

[0214] The indication information can be assigned in various ways. The part indicating the activation status of all multicast sessions configured by the network device can be assigned in ways 1 to 6 above. The part indicating whether each multicast service configured by the network device can be received by the corresponding user equipment in the RRC / CM inactive state can be assigned in ways 7 to 8 above. The two parts can be combined independently or mixed together.

[0215] For example, the network device is configured with three multicast services: MBS1, MBS2, and MBS3. 3， The multicast session MBSsession1 of MBS1 is in an active state and can be received by UE1 in an inactive RRC / CM state. The multicast sessions MBSsession2 and MBSsession3 of MBS2 and MBS3 are in an inactive state and cannot be received by UE2 in an inactive RRC / CM state. The network device can generate indication information, make the proprietary message carry the indication information, and use M-RNTI to scramble the PDCCH of the proprietary message. Correspondingly, UE1 listens to the PDCCH scrambled by M-RNTI and receives the proprietary message according to the scheduling information in the PDCCH to receive the indication information.

[0216] The instruction message can be as follows:

[0217] The indication information may include information indicating the current active state of MBS session1, MBS session2 and MBS session3. The indication information may be represented by the first assignment method as "110", the second assignment method as "001", or the sixth assignment method as "011 010 001", so that UE1 knows that MBS session1 is currently active and UE2 knows that MBS session2 and MBS session3 are currently deactivated.

[0218] The indication information may include information indicating whether MBS1, MBS2 and MBS3 can be received by user equipment (UE1 or UE2) in the corresponding RRC / CM inactive state. The indication information can be represented by the seventh assignment method as "110" or by the eighth assignment method as "001", so that UE1 can be made aware that MBS1 can be received by UE1 in the RRC / CM inactive state, and UE2 can be made aware that MBS2 and MBS3 cannot be received by UE2 in the RRC / CM inactive state.

[0219] The indication information may include a portion indicating that the MBS session 1 corresponding to G-RNTI1 is in an active state, and a portion indicating whether the MBS1 corresponding to G-RNTI1 can be received by UE1, which is in an inactive RRC / CM state.

[0220] The indication information can be a combination of the first and seventh assignment methods. "110" and "110" can be combined independently as "110 110" (where the part indicating the active state of the multicast session comes first, and the part indicating whether the multicast service can be received by the inactive user equipment of RRC / CM comes second; the two parts are combined independently, and the bits of the two parts are ordered from high to low according to MBS ID). Alternatively, they can be mixed together as "11 11 00" (where the part indicating the active state of the multicast session comes first, and the part indicating whether the multicast service can be received by the inactive user equipment of RRC / CM comes second; the two parts are mixed together, and the combination formed by the mixture is ordered from high to low according to MBS ID; the lowest bit combination "00" indicates MBS1, and the middle and highest bit combination "11" indicates MBS2 and MBS3).

[0221] Alternatively, a combination of the sixth and seventh assignment methods can be used. "011 010001" and "110" can be independently combined, represented as "011 010 001 110" (where the part indicating the active state of the multicast session comes first, followed by the part indicating whether the multicast service can be received by inactive RRC / CM user equipment; the two parts are combined independently, and the bits of the two parts are ordered from high to low according to MBS ID). Alternatively, "011 010 001" and "110" can be mixed together, represented as "0111 0101 0010" (where the part indicating the active state of the multicast session comes first, followed by the part indicating whether the multicast service can be received by inactive RRC / CM user equipment; the two parts are mixed together, and the combination of the two parts is ordered according to MBS ID). The IDs are ordered in ascending order, where "0010" indicates that the active state of MBS1 corresponding to "001" is set to "0", indicating that it is in an active state (the same applies to others). This allows UE1 to know that MBS session 1 is currently in an active state and that MBS1 can be received by UE1, which is in an inactive state in RRC / CM. It also allows UE2 to know that MBS session 2 and MBS session 3 are currently in an active state and that MBS2 and MBS3 can be received by UE2, which is in an inactive state in RRC / CM.

[0222] In summary, during any transmission of indication information, the PDCCH can be selected to use C-RNTI scrambling scheduling information, G-RNTI scrambling scheduling information, or a specific scrambling code scrambling scheduling information.

[0223] It should be noted that in some scenarios, the scrambling code selected in the previous transmission and the scrambling code selected in the next transmission can be the same or different. For example, after sending indication information to all user equipment in a group using a PDCCH with G-RNTI scrambling scheduling proprietary information, if a user equipment misses receiving the message, a PDCCH with C-RNTI scrambling scheduling proprietary information can be used for supplementary transmission. Correspondingly, the embodiments provided in this patent, such as the method of scheduling paging messages, are similar and will not be described in detail here.

[0224] In one embodiment of the present invention, the process of sending indication information to a user equipment includes:

[0225] Send an RRC connection release message to the user equipment; the RRC connection release message carries indication information.

[0226] In one embodiment of the present invention, the process of receiving indication information from a network device includes:

[0227] Receive RRC connection release messages from network devices; obtain the indication information carried in the RRC connection release messages.

[0228] Specifically, the RRC connection release message carries indication information to indicate whether the multicast session corresponding to the multicast service is currently in an active or deactivated state, and whether the multicast service can be received when the corresponding user equipment is in an inactive state.

[0229] In one embodiment of the present invention, during the process of the network device sending an RRC connection release message carrying indication information to the user equipment:

[0230] The PDCCH of the RRC connection release message is scrambled using C-RNTI. C-RNTI corresponds to the user equipment. The indication information carried in the RRC connection release message is used to indicate the active and / or deactivated state of the multicast session joined by the user equipment corresponding to C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC / CM inactive state after activation.

[0231] In one embodiment of the present invention, during the process of the user equipment receiving the RRC connection release message carrying indication information sent by the network device:

[0232] Listen to the PDCCH that scrambles and schedules the RRC connection release message by C-RNTI, receive the RRC connection release message according to the scheduling information in the PDCCH, and obtain the indication information carried in the RRC connection release message to indicate the current active state of the multicast session joined by the user equipment corresponding to C-RNTI, and / or indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC / CM inactive state after activation.

[0233] Specifically, network devices use C-RNTI to scramble the PDCCH of the scheduled RRC connection release message. User equipment listens to the PDCCH scrambled by C-RNTI, receives the RRC connection release message according to the scheduling information in the PDCCH, and then obtains the indication information carried in the RRC connection release message, so that the user equipment can know whether all the multicast sessions it has joined are currently in an active or deactivated state, and whether all the multicast services it has joined can be received by user equipment in an inactive state of RRC / CM.

[0234] The indication information can be assigned in various ways. The part indicating the activation status of all multicast sessions joined by the user equipment can be assigned in the first to sixth ways mentioned above. The part indicating whether the user equipment can receive multicast services joined by the user equipment when it is in the RRC / CM inactive state can be assigned in the seventh to eighth ways mentioned above. The two parts can be combined independently or mixed together.

[0235] For example, if User Equipment UE1 currently joins two multicast services MBS1 and MBS2, and MBS1's multicast session MBSsession1 is in an active state and can be received by UE1 in an inactive RRC / CM state, while MBS2's multicast session MBSsession2 is in an inactive state and cannot be received by UE1 in an inactive RRC / CM state: the network device can generate indication information, enabling the RRC connection release message to carry the indication information, and using C-RNTI1 scrambling to schedule the RRC connection release message's PDCCH corresponding to User Equipment UE1. Accordingly, UE1 listens to the PDCCH scrambled by C-RNTI and receives the RRC connection release message according to the scheduling information in the PDCCH to receive the indication information;

[0236] The instruction message can be as follows:

[0237] The indication information may include information indicating the current active state of MBS session1 and MBS session2. The indication information may be represented by the first assignment method as "10" or by the second assignment method as "01". The bits here correspond to the MBS ID in descending order from high to low, so that UE1 can clearly know that MBS session1 is currently in the active state and MBS session2 is in the deactivated state.

[0238] The indication information may include information indicating whether MBS1 and MBS2 can be received by UE1 in the RRC / CM inactive state. The indication information can be represented as "10" in the seventh assignment method, where the bits correspond to the MBS ID in descending order from high to low. It can also be represented as "01" in the eighth assignment method, so that UE1 knows that MBS1 can be received and MBS2 cannot be received when UE1 is in the RRC / CM inactive state.

[0239] The indication information may include a portion indicating the current active state of MBS session1 and MBS session2, and a portion indicating whether MBS1 and MBS2 can be received by UE1, which is in an inactive RRC / CM state. The indication information can be represented as "10 10" using the first and seventh assignment methods (where the portion indicating the active state of the multicast session comes first, followed by the portion indicating whether the multicast service can be received by a user equipment in an inactive RRC / CM state; these are independent combinations of the two portions, with the bits of the two portions ordered from high to low according to the MBS ID). Alternatively, it can be represented as "10 01" using the first and eighth assignment methods (where the portion indicating the active state of the multicast session comes first, followed by the portion indicating whether the multicast service can be received by a user equipment in an inactive RRC / CM state; these two portions are independent combinations, with the bits of the two portions ordered from high to low according to the MBS ID). This is used to indicate to UE1, MBS... Session 1 is currently active and MBS1 can be received by UE1, which is inactive in RRC / CM. MBSsession 2 is inactive and MBS2 cannot be received by UE1, which is inactive in RRC / CM.

[0240] In one embodiment of the present invention, the RRC connection release message also carries MRB configuration information, and the indication information is independent of the MRB configuration information to indicate the current active state of the corresponding multicast session, and / or whether the corresponding multicast service can be received by the user equipment in the RRC / CM inactive state after activation.

[0241] Specifically, the network device generates an RRC connection release message and uses C-RNTI to scramble and schedule the PDCCH of the RRC connection release message, enabling the user equipment corresponding to the C-RNTI to receive the RRC connection release message. Accordingly, the RRC connection release message may carry the transmission configuration information (PTM configuration) of all multicast services received by the user equipment. This PTM configuration information may include all or part of the MRB configuration information of the multicast services. Therefore, the RRC connection release message simultaneously carries MRB configuration information and indication information. The MRB configuration information and indication information can be independent of each other, respectively indicating the MRB configuration status of the multicast service, the current active state of the multicast session, and / or whether the user equipment can receive activated multicast services when it is in an RRC / CM inactive state.

[0242] In one embodiment of the present invention, the RRC connection release message also carries MRB configuration information, and the indication information is located in the MRB configuration information. Each MRB configuration information includes indication information for indicating the current active state of its corresponding multicast session and / or whether the multicast service corresponding to it can be received by the user equipment in the RRC / CM inactive state after activation.

[0243] Specifically, the network device generates an RRC connection release message and uses C-RNTI to scramble and schedule the PDCCH of the RRC connection release message, so that the user equipment corresponding to the C-RNTI receives the RRC connection release message. Accordingly, the RRC connection release message may carry the transmission configuration information (PTM configuration) of all multicast services received by the user equipment. The transmission configuration information of all multicast services received by the user equipment may include all or part of the MRB configuration information of the multicast services. Therefore, the RRC connection release message carries both MRB configuration information and indication information. The indication information can exist in the MRB configuration information. That is, the MRB configuration information of each multicast service can include indication information for indicating the current active state of its corresponding multicast session, or indication information for indicating whether the corresponding multicast service can be received by user equipment in the RRC / CM inactive state after activation, or indication information for indicating the current active state of its corresponding multicast session and indication information for indicating whether the corresponding multicast service can be received by user equipment in the RRC / CM inactive state after activation. Thus, in addition to indicating the MRB configuration status of the multicast service, the MRB configuration information can also use the indication information to indicate the current active state of the multicast session and / or whether the user equipment can receive the activated multicast service when it is in the RRC / CM inactive state.

[0244] When the indication information exists in the MRB configuration information, the part of the indication information that indicates the current active state of the corresponding multicast session and the part of the indication information that indicates whether the corresponding multicast service can be received by the user equipment in the RRC / CM inactive state after activation can be indicated as two items in the MRB configuration information, or they can be combined as one item in the MRB configuration information.

[0245] For example, if User Equipment 1 (UE1) has joined a multicast session MBS session1 of a multicast service MBS1, and MBS session1 is in an active state, the indication information will be assigned a value of "0" to the part indicating the current active state of MBS session1 using the first assignment method. The MRB configuration information can be represented as follows:

[0246] The information indicating that MBS session1 is currently active will be included as an item in the MRB configuration information in the form of "mbs-SessionActiveInacative", and a corresponding value will be assigned to this item to form the final corresponding MRB configuration information:

[0247] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0248] MRB-ToAddMod-r17 ::=SEQUENCE {

[0249] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0250] mbs-SessionActiveInacative0

[0251] mrb-Identity-r17MRB-Identity-r17,

[0252] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0253] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0254] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0255] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP ...

[0256] }

[0257] For example, if User Equipment 1 (UE1) is currently enrolled in a multicast service MBS1, and MBS1 cannot be received by UE1 in an inactive RRC / CM state, and the indication information uses the seventh assignment method to assign a value of "1" to the part indicating whether MBS1 can be received by UE1 in an inactive RRC / CM state, the MRB configuration information can be represented as follows:

[0258] The information indicating that MBS1 cannot be received by UE1 in the RRC / CM inactive state is presented as "mbs-Receive" and included as an item in the MRB configuration information. A value is then assigned to this item, and the corresponding MRB configuration information is finally formed.

[0259] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0260] MRB-ToAddMod-r17 ::=SEQUENCE {

[0261] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0262] mbs-Receive1

[0263] mrb-Identity-r17MRB-Identity-r17,

[0264] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0265] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0266] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0267] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP ...

[0268] }

[0269] For example, if User Equipment 1 (UE1) has joined a multicast service MBS1, and the multicast session MBS session 1 of MBS1 is active, but MBS1 cannot be received by UE1 which is in an inactive RRC / CM state, and the indication information uses the first assignment method to assign a value of "0" to the part indicating the current active state of MBS session 1, and uses the seventh assignment method to assign a value of "1" to the part indicating whether MBS1 can be received by UE1 which is in an inactive RRC / CM state, the MRB configuration information can be represented as follows:

[0270] Specifically, the information indicating that MBS session1 is currently active can be included as an item in the MRB configuration information in the form of "mbs-SessionActiveInAcative" and a corresponding value can be assigned to it. The information indicating that MBS1 cannot be received by UE1 in the RRC / CM inactive state can be included as an item in the MRB configuration information in the form of "mbs-Receive" and a corresponding value can be assigned to it. Finally, the corresponding MRB configuration information is formed.

[0271] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0272] MRB-ToAddMod-r17 ::=SEQUENCE {

[0273] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0274] mbs-SessionActiveInAcative0

[0275] mbs-Receive1

[0276] mrb-Identity-r17MRB-Identity-r17,

[0277] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0278] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0279] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0280] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP ...

[0281] }

[0282] This can be composed of two information parts: one indicating that MBS session1 is currently active and the other indicating that MBS1 cannot be received by UE1 in an inactive RRC / CM state. These are presented as "mbs-SessionConfig3" and included as an item in the MRB configuration information. A value is then assigned to this item, ultimately forming the corresponding MRB configuration information.

[0283] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0284] MRB-ToAddMod-r17 ::=SEQUENCE {

[0285] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0286] mbs-SessionConfig301

[0287] mrb-Identity-r17MRB-Identity-r17,

[0288] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0289] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0290] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0291] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP ...

[0292] }

[0293] It should be noted that this embodiment only involves one MBS service, so only one "SessionActiveInAcative", one "mbs-Receive", or one "mbs-SessionConfig3" is provided. If multiple MBS services are involved, multiple MRB-ToAddMod-r17s can each contain one "SessionActiveInAcative", one "mbs-Receive", or one "mbs-SessionConfig3" to indicate the current activation status of the multicast session of the corresponding MBS service, and whether the MBS service can be received by an inactive user equipment.

[0294] It should be noted that the names "SessionActiveInAcative", "mbs-Receive", and "mbs-SessionConfig3" used to indicate information in the above embodiments are only for clear description, and other clearer descriptions may be used in actual operation.

[0295] It should also be noted that with the development and evolution of communication technology, the functional definitions of the information items contained in the existing MRB configuration information may also change to some extent. Therefore, the information listed in the above MRB configuration information, such as "MRB-ToAddModList-r17", "MRB-ToAddMod-r17", "mrb-Identity-r17", "reestablishPDCP-r17", "recoverPDCP-r17" and "pdcp-Config-r17", may change, and the corresponding names or definitions may also change. No restrictions are made on these information items here.

[0296] In one embodiment of the present invention, the process of sending indication information to a user equipment includes:

[0297] Send a system message to the user equipment to carry configuration information for the multicast MCCH; the system message carries indication information.

[0298] In one embodiment of the present invention, the process of a user equipment receiving indication information includes:

[0299] Receive system messages from network devices for carrying configuration information for the multicast MCCH; obtain indication information carried in the system messages.

[0300] Specifically, the network device sends a system message carrying configuration information of the multicast MCCH to the user equipment. The system message carries indication information to indicate whether the multicast session corresponding to the multicast service is currently in an active or deactivated state, and whether the multicast service can be received when the corresponding user equipment is in an inactive state.

[0301] In one embodiment of the present invention, the process of sending a system message carrying configuration information of a multicast MCCH to a user equipment includes:

[0302] The PDCCH of the SI-RNTI scrambled scheduling system message carries indication information to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC / CM inactive state after activation.

[0303] In one embodiment of the present invention, the process of receiving a system message carrying configuration information of a multicast MCCH from a network device includes:

[0304] Listen to the PDCCH scrambled and scheduled by SI-RNTI, receive system messages based on the scheduling information in the PDCCH, and obtain the indication information carried in the system messages to indicate the current activation status of all multicast sessions configured by the network device, and / or indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

[0305] Specifically, network devices use SI-RNTI to scramble the PDCCH of scheduling system messages. All user equipment can listen to the SI-RNTI-scrambled PDCCH, and thus receive system messages based on the scheduling information in the PDCCH. They can then obtain the indication information carried in the system messages, enabling the corresponding user equipment to determine the current active state of all multicast sessions, and thus determine whether the multicast sessions it has joined are currently active or inactive. Furthermore, the corresponding user equipment can determine whether each multicast service configured by the network device can be received by user equipment in the RRC / CM inactive state after activation, and thus determine whether it can receive the corresponding multicast service under RRC inactive state.

[0306] The indication information can be assigned in various ways. The part indicating the activation status of all multicast sessions configured by the network device can be assigned in ways 1 to 6 above. The part indicating whether each multicast service configured by the network device can be received by the corresponding user equipment in the RRC / CM inactive state can be assigned in ways 7 to 8 above. The two parts can be combined independently or mixed together.

[0307] For example, a network device is configured with three multicast services, MBS1, MBS2, and MBS3. The multicast session MBSsession1 of MBS1 is in an active state and can be received by UE1, which is in an inactive RRC / CM state. The multicast sessions MBSsession2 and MBSsession3 of MBS2 and MBS3 are in an inactive state and cannot be received by UE2, which is in an inactive RRC / CM state. The network device can generate a system message carrying configuration information of the multicast MCCH, make the system message carry indication information, and use SI-RNTI to scramble the PDCCH of the scheduling system message. Correspondingly, UE1 listens to the PDCCH scrambled by SI-RNTI and receives the system message according to the scheduling information in the PDCCH to receive the indication information.

[0308] The instruction message can be as follows:

[0309] The indication information may include information indicating the current active state of MBS session1, MBS session2 and MBS session3. The indication information may be represented by the first assignment method as "110", the second assignment method as "001", or the sixth assignment method as "011 010 001", so that UE1 knows that MBS session1 is currently active and UE2 knows that MBS session2 and MBS session3 are currently deactivated.

[0310] The indication information may include information indicating whether MBS1, MBS2 and MBS3 can be received by user equipment (UE1 or UE2) in the corresponding RRC / CM inactive state. The indication information can be represented by the seventh assignment method as "110" or by the eighth assignment method as "001", so that UE1 can be made aware that MBS1 can be received by UE1 in the RRC / CM inactive state, and UE2 can be made aware that MBS2 and MBS3 cannot be received by UE2 in the RRC / CM inactive state.

[0311] The indication information may include a portion indicating that the MBS session 1 corresponding to G-RNTI1 is in an active state, and a portion indicating whether the MBS1 corresponding to G-RNTI1 can be received by UE1, which is in an inactive RRC / CM state.

[0312] The indication information can be a combination of the first and seventh assignment methods. "110" and "110" can be combined independently as "110 110" (where the part indicating the active state of the multicast session comes first, and the part indicating whether the multicast service can be received by the inactive user equipment of RRC / CM comes second; the two parts are combined independently, and the bits of the two parts are ordered from high to low according to MBS ID). Alternatively, they can be mixed together as "11 11 00" (where the part indicating the active state of the multicast session comes first, and the part indicating whether the multicast service can be received by the inactive user equipment of RRC / CM comes second; the two parts are mixed together, and the combination formed by the mixture is ordered from high to low according to MBS ID; the lowest bit combination "00" indicates MBS1, and the middle and highest bit combination "11" indicates MBS2 and MBS3).

[0313] Alternatively, a combination of the sixth and seventh assignment methods can be used. "011 010001" and "110" can be independently combined, represented as "011 010 001 110" (where the part indicating the active state of the multicast session comes first, followed by the part indicating whether the multicast service can be received by inactive RRC / CM user equipment; the two parts are combined independently, and the bits of the two parts are ordered from high to low according to MBS ID). Alternatively, "011 010 001" and "110" can be mixed together, represented as "0111 0101 0010" (where the part indicating the active state of the multicast session comes first, followed by the part indicating whether the multicast service can be received by inactive RRC / CM user equipment; the two parts are mixed together, and the combination of the two parts is ordered according to MBS ID). The IDs are ordered in ascending order, where "0010" indicates that the active state of MBS1 corresponding to "001" is set to "0", indicating that it is in an active state (the same applies to others). This allows UE1 to know that MBS session 1 is currently in an active state and that MBS1 can be received by UE1, which is in an inactive state in RRC / CM. It also allows UE2 to know that MBS session 2 and MBS session 3 are currently in an active state and that MBS2 and MBS3 can be received by UE2, which is in an inactive state in RRC / CM.

[0314] In one embodiment of the present invention, the process of sending indication information to a user equipment includes:

[0315] Send a dedicated message to the user equipment to carry configuration information for the multicast MCCH; the dedicated message carries indication information.

[0316] In one embodiment of the present invention, the process of a user equipment receiving indication information includes:

[0317] Receive dedicated messages from network devices that carry configuration information for the multicast MCCH; obtain the indication information carried in the dedicated messages.

[0318] Specifically, the network device sends a dedicated message to the user equipment carrying configuration information for the multicast MCCH. The dedicated message carries indication information to indicate whether the multicast session corresponding to the multicast service is currently in an active or deactivated state, and whether the multicast service can be received when the corresponding user equipment is in an inactive state.

[0319] In one embodiment of the present invention, during the process of a network device sending a dedicated message carrying indication information to a user equipment:

[0320] The PDCCH using C-RNTI scrambling scheduling special messages carries indication information to indicate the active and / or deactivated states of all or part of the multicast sessions joined by the user equipment corresponding to C-RNTI, and / or to indicate whether all or part of the multicast services joined by the user equipment can be received by the user equipment in the RRC / CM inactive state after activation.

[0321] In one embodiment of the present invention, the process by which a user equipment receives a dedicated message carrying configuration information of a multicast MCCH from a network device includes:

[0322] Listen to the PDCCH scrambled and scheduled by C-RNTI, receive dedicated messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the dedicated messages to indicate the current active status of all or part of the multicast sessions joined by the user equipment corresponding to C-RNTI, and / or indicate whether all or part of the multicast services joined by the user equipment can be received by user equipment in the RRC or CM inactive state after activation.

[0323] Specifically, network devices use C-RNTI to scramble the PDCCH of the scheduling system message. The user equipment corresponding to C-RNTI can listen to the PDCCH scrambled by C-RNTI. Based on the scheduling information in the PDCCH, it receives a dedicated message carrying the configuration information of the multicast MCCH, and then obtains the indication information carried in the dedicated message. This enables the corresponding user equipment to know whether all or part of the multicast sessions it has joined are currently in an active or deactivated state, and to know that the corresponding user equipment can receive the corresponding multicast service under RRC inactivity.

[0324] The indication information can be assigned in various ways. The part indicating the activation status of all multicast sessions joined by the user equipment can be assigned in the first to sixth ways mentioned above. The part indicating whether the user equipment can receive multicast services joined by the user equipment when it is in the RRC / CM inactive state can be assigned in the seventh to eighth ways mentioned above. The two parts can be combined independently or mixed together.

[0325] For example, if User Equipment 1 currently joins two multicast services, MBS1 and MBS2, and MBS1's multicast session MBSsession1 is active and can be received by UE1 in an inactive RRC / CM state, while MBS2's multicast session MBSsession2 is deactivated and cannot be received by UE1 in an inactive RRC / CM state: the network device can generate a dedicated message carrying configuration information for the multicast MCCH, enable the RRC connection release message to carry indication information, and adopt the PDCCH scrambled and scheduled by C-RNTI1 corresponding to User Equipment 1; accordingly, the User Equipment listens to the PDCCH scrambled and scheduled by C-RNTI, receives the dedicated message according to the scheduling information in the PDCCH, and obtains the indication information carried in the dedicated message;

[0326] The instruction message can be described as follows:

[0327] The indication information may include information indicating the current active state of MBS session1 and MBS session2. The indication information may be represented by the first assignment method as "10" or by the second assignment method as "01". The bits here correspond to the MBS ID in descending order from high to low, so that UE1 can clearly know that MBS session1 is currently in the active state and MBS session2 is in the deactivated state.

[0328] The indication information may include information indicating whether MBS1 and MBS2 can be received by UE1 in the RRC / CM inactive state. The indication information can be represented as "10" in the seventh assignment method, where the bits correspond to the MBS ID in descending order from high to low. It can also be represented as "01" in the eighth assignment method, so that UE1 knows that MBS1 can be received and MBS2 cannot be received when UE1 is in the RRC / CM inactive state.

[0329] The indication information may include a portion indicating the current active state of MBS session1 and MBS session2, and a portion indicating whether MBS1 and MBS2 can be received by UE1, which is in an inactive RRC / CM state. The indication information can be represented as "10 10" using the first and seventh assignment methods (where the portion indicating the active state of the multicast session comes first, followed by the portion indicating whether the multicast service can be received by a user equipment in an inactive RRC / CM state; these are independent combinations of the two portions, with the bits of the two portions ordered from high to low according to the MBS ID). Alternatively, it can be represented as "10 01" using the first and eighth assignment methods (where the portion indicating the active state of the multicast session comes first, followed by the portion indicating whether the multicast service can be received by a user equipment in an inactive RRC / CM state; these two portions are independent combinations, with the bits of the two portions ordered from high to low according to the MBS ID). This is used to indicate to UE1, MBS... Session 1 is currently active and MBS1 can be received by UE1, which is inactive in RRC / CM. MBSsession 2 is inactive and MBS2 cannot be received by UE1, which is inactive in RRC / CM.

[0330] In one embodiment of the present invention, during the process of a network device sending a dedicated message carrying indication information to a user equipment:

[0331] The PDCCH uses C-RNTI scrambling to schedule dedicated messages. The dedicated messages carry indication information to indicate the active and / or deactivated states of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC / CM inactive state after activation.

[0332] In one embodiment of the present invention, during the process of a user equipment receiving a dedicated message carrying indication information sent from a network device:

[0333] Listen to the PDCCH scrambled and scheduled by C-RNTI, receive the dedicated message according to the scheduling information in the PDCCH, and obtain the indication information carried by the dedicated message to indicate the current activation status of all multicast sessions configured by the network device, and / or indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

[0334] For example, a network device is configured with three multicast services, MBS1, MBS2, and MBS3. MBS1's multicast session MBSsession1 is active and can be received by UE1, which is in an inactive RRC / CM state. MBS2 and MBS3's multicast sessions MBSsession2 and MBSsession3 are deactivated and cannot be received by UE2, which is in an inactive RRC / CM state. The network device can generate a dedicated message carrying configuration information for the multicast MCCH, enabling the dedicated message to carry indication information. The PDCCH of the dedicated message is scrambled and scheduled using C-RNTI. Correspondingly, the user equipment listens to the PDCCH scrambled and scheduled by C-RNTI, receives the dedicated message according to the scheduling information in the PDCCH, and obtains the indication information carried by the dedicated message. The indication information can be as follows:

[0335] The indication information may include information indicating the current active state of MBS session1, MBS session2, and MBS session3. The indication information may be represented by the first assignment method as "110", the second assignment method as "001", or the sixth assignment method as "011 010 001", so that UE1 knows that MBS session1 is currently active and UE2 knows that MBS session2 and MBS session3 are currently deactivated.

[0336] The indication information may include information indicating whether MBS1, MBS2 and MBS3 can be received by user equipment (UE1 or UE2) in the corresponding RRC / CM inactive state. The indication information can be represented by the seventh assignment method as "110" or by the eighth assignment method as "001", so that UE1 can be made aware that MBS1 can be received by UE1 in the RRC / CM inactive state, and UE2 can be made aware that MBS2 and MBS3 cannot be received by UE2 in the RRC / CM inactive state.

[0337] The indication information may include information indicating that the MBS session 1 corresponding to G-RNTI1 is in an active state, and information indicating whether the MBS1 corresponding to G-RNTI1 can be received by UE1 in an inactive state of RRC / CM.

[0338] The indication information can be a combination of the first and seventh assignment methods. "110" and "110" can be combined independently as "110 110" (where the part indicating the active state of the multicast session comes first, and the part indicating whether the multicast service can be received by the inactive user equipment of RRC / CM comes second; the two parts are combined independently, and the bits of the two parts are ordered from high to low according to MBS ID). Alternatively, they can be mixed together as "11 11 00" (where the part indicating the active state of the multicast session comes first, and the part indicating whether the multicast service can be received by the inactive user equipment of RRC / CM comes second; the two parts are mixed together, and the combination formed by the mixture is ordered from high to low according to MBS ID; the lowest bit combination "00" indicates MBS1, and the middle and highest bit combination "11" indicates MBS2 and MBS3).

[0339] Alternatively, a combination of the sixth and seventh assignment methods can be used. "011 010001" and "110" can be independently combined, represented as "011 010 001 110" (where the part indicating the active state of the multicast session comes first, followed by the part indicating whether the multicast service can be received by inactive RRC / CM user equipment; the two parts are combined independently, and the bits of the two parts are ordered from high to low according to MBS ID). Alternatively, "011 010 001" and "110" can be mixed together, represented as "0111 0101 0010" (where the part indicating the active state of the multicast session comes first, followed by the part indicating whether the multicast service can be received by inactive RRC / CM user equipment; the two parts are mixed together, and the combination of the two parts is ordered according to MBS ID). The IDs are ordered in ascending order, where "0010" indicates that the active state of MBS1 corresponding to "001" is set to "0", indicating that it is in an active state (the same applies to others). This allows UE1 to know that MBS session 1 is currently in an active state and that MBS1 can be received by UE1, which is in an inactive state in RRC / CM. It also allows UE2 to know that MBS session 2 and MBS session 3 are currently in an active state and that MBS2 and MBS3 can be received by UE2, which is in an inactive state in RRC / CM.

[0340] In one embodiment of the present invention, the process of sending indication information to a user equipment includes:

[0341] Send multicast MCCH information to user equipment, which carries indication information.

[0342] In one embodiment of the present invention, the process of a user equipment receiving indication information includes:

[0343] Receive multicast MCCH information from a network device and obtain the indication information carried in the multicast MCCH information.

[0344] Specifically, network devices send multicast MCCH information to user equipment. The multicast MCCH information carries indication information to indicate whether the multicast session corresponding to the multicast service is currently in an active or deactivated state, and whether the user equipment can receive the corresponding multicast service even when it is in an inactive state. The multicast MCCH information can be carried by system messages or dedicated information.

[0345] In one embodiment of the present invention, during the process of a user equipment receiving and transmitting multicast MCCH information carrying indication information:

[0346] The SC-RNTI is used to listen to the PDCCH. Based on the scheduling information in the PDCCH, the multicast MCCH is received. The indication information carried in the multicast MCCH is obtained to indicate the current activation status of all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment, and / or to indicate whether all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0347] In one embodiment of the present invention, during the process of a user equipment receiving and transmitting multicast MCCH information carrying indication information:

[0348] The SC-RNTI is used to listen to the PDCCH. Based on the scheduling information in the PDCCH, the multicast MCCH is received. The indication information carried in the multicast MCCH is obtained to indicate the current activation status of all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment, and / or to indicate whether all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0349] In one embodiment of the present invention, during the process of a user equipment receiving and transmitting multicast MCCH information carrying indication information:

[0350] The PDCCH of the multicast MCCH information is scrambled using SC-RNTI. The multicast MCCH information carries indication information to indicate the current activation status of all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment, and / or to indicate whether all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0351] Furthermore, in one embodiment of the present invention, during the process of the network device sending multicast MCCH information carrying indication information to the user equipment:

[0352] When using SC-RNTI to scramble and schedule multicast MCCH information in a PDCCH, if the system message carries multicast MCCH configuration information, the multicast MCCH information also carries MBS configuration information:

[0353] When the indication information is independent of the MBS configuration information, the indication information is used to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC / CM inactive state after activation.

[0354] When the indication information is in the MBS configuration information, each MBS configuration information includes indication information for the current activation status of its corresponding multicast session, and / or whether the corresponding multicast service can be received by user equipment in the RRC / CM inactive state after activation.

[0355] In one embodiment of the present invention, during the process of a user equipment receiving and transmitting multicast MCCH information carrying indication information:

[0356] The SC-RNTI is used to listen to the PDCCH. Based on the scheduling information in the PDCCH, the multicast MCCH is received. The indication information carried in the multicast MCCH is obtained to indicate the current activation status of all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment, and / or to indicate whether all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0357] Furthermore, in one embodiment of the present invention, the PDCCH that uses SC-RNTI scrambling to schedule multicast MCCH information, if the system message carries multicast MCCH configuration information, also carries MBS configuration information in the multicast MCCH information:

[0358] When the indication information is independent of the MBS configuration information, the indication information is used to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC / CM inactive state after activation.

[0359] When the indication information is in the MBS configuration information, each MBS configuration information includes indication information for the current activation status of its corresponding multicast session, and / or whether the corresponding multicast service can be received by user equipment in the RRC / CM inactive state after activation.

[0360] Specifically, when the indication information exists in the MBS configuration information, the information portion indicating the current active state of the corresponding multicast session and the information portion indicating whether the corresponding multicast service can be received by the user equipment in the RRC / CM inactive state after activation can be indicated as two items in the MBS configuration information, or they can be combined as one item in the MBS configuration information.

[0361] For example, if a network device is configured with three multicast services MBS1, MBS2, and MBS3, with MBS session1 in an active state and MBS session2 and MBS session3 in a deactivated state, the information indicating the current active state of MBS session1 is assigned the value "110" using the first assignment method. The MBS configuration information can be represented as follows:

[0362] The information indicating that MBS session1, MBS session2, and MBS session3 are currently active will be included as an item in the MRB configuration information in the form of "mbs-SessionActiveInAcative" and a corresponding value will be assigned to this item to form the final MBS configuration information:

[0363] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0364] MRB-ToAddMod-r17 ::=SEQUENCE {

[0365] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0366] mbs-SessionActiveInAcative0

[0367] mrb-Identity-r17MRB-Identity-r17,

[0368] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0369] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0370] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0371] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP

[0372] …}

[0373] MRB-ToAddMod-r17 ::=SEQUENCE {

[0374] mbs-SessionId-r17TMGI-r17OPTIONAL,-- Cond MRBSetup

[0375] mbs- SessionActiveInAcative1

[0376] mrb-Identity-r17MRB-Identity-r17,

[0377] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0378] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0379] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0380] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP

[0381] …}

[0382] MRB-ToAddMod-r17 ::=SEQUENCE {

[0383] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0384] mbs-SessionActiveInAcative1

[0385] mrb-Identity-r17MRB-Identity-r17,

[0386] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0387] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0388] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0389] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP

[0390] ...}

[0391] For example, if a network device is configured with three multicast services MBS1, MBS2, and MBS3, and MBS1 cannot be received by UE1 in an RRC / CM inactive state, while MBS2 and MBS3 can be received by UE2 in an RRC / CM inactive state, and the indication information uses the eighth assignment method to assign the value "001" to the part indicating whether MBS1 can be received by UE1 in an RRC / CM inactive state, the MBS configuration information can be represented as follows:

[0392] The information indicating that MBS1 cannot be received by UE1 in the RRC / CM inactive state, and that MBS2 and MBS3 can be received by UE2 in the RRC / CM inactive state, is included as an item in the MBS configuration information in the form of "mbs-Receive". A value is assigned to this item, and finally the corresponding MBS configuration information is formed:

[0393] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0394] MRB-ToAddMod-r17 ::=SEQUENCE {

[0395] mbs-SessionId-r17TMGI-r17OPTIONAL,-- Cond MRBSetup

[0396] mbs- Receive1

[0397] mrb-Identity-r17MRB-Identity-r17,

[0398] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0399] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0400] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0401] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP

[0402] mbs-SessionId-r17TMGI-r17OPTIONAL,-- Cond MRBSetup

[0403] mbs- Receive0

[0404] mrb-Identity-r17MRB-Identity-r17,

[0405] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0406] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0407] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0408] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP

[0409] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0410] mbs-Receive0

[0411] mrb-Identity-r17MRB-Identity-r17,

[0412] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0413] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0414] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0415] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP ...

[0416] }

[0417] For example, if a network device is configured with three multicast services MBS1, MBS2, and MBS3, and MBS1's multicast session MBSsession1 is active and cannot be received by UE1 (which is in an inactive RRC / CM state), while MBSsession2 and MBSsession3 are deactivated and can be received by UE2 (which is in an inactive RRC / CM state), and the information indicating the current active state of MBSsession1, MBSsession2, and MBSsession3 is assigned the value "110" using the first assignment method, and the information indicating whether MBS1 can be received by UE1 (which is in an inactive RRC / CM state) and whether MBS2 and MBS3 cannot be received by UE2 (which is in an inactive RRC / CM state) is assigned the value "001" using the eighth assignment method, then the MBS configuration information can be represented as follows:

[0418] Specifically, the information indicating that MBS session1 is currently active can be included as an item in the MBS configuration information in the form of "mbs-SessionActiveInAcative" and a corresponding value can be assigned to it. The information indicating that MBS1 cannot be received by UE1 in the RRC / CM inactive state can be included as an item in the MBS configuration information in the form of "mbs-Receive" and a corresponding value can be assigned to it. Finally, the corresponding MBS configuration information is formed.

[0419] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0420] MRB-ToAddMod-r17 ::=SEQUENCE {

[0421] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0422] mbs-SessionActiveInAcative0

[0423] mbs-Receive1

[0424] mrb-Identity-r17MRB-Identity-r17,

[0425] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0426] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0427] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0428] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP

[0429] MRB-ToAddMod-r17 ::=SEQUENCE {

[0430] mbs-SessionId-r17TMGI-r17OPTIONAL,-- Cond MRBSetup

[0431] mbs- SessionActiveInAcative1

[0432] mbs- Receive0

[0433] mrb-Identity-r17MRB-Identity-r17,

[0434] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0435] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0436] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0437] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP

[0438] mbs-SessionId-r17TMGI-r17OPTIONAL,-- Cond MRBSetup

[0439] mbs- SessionActiveInAcative1

[0440] mbs- Receive0

[0441] mrb-Identity-r17MRB-Identity-r17,

[0442] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0443] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0444] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0445] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP ...

[0446] }

[0447] Specifically, the two information parts indicating the current active state of MBS session1 and indicating that MBS1 cannot be received by UE1 in the RRC / CM inactive state, the two information parts indicating the current active state of MBS session2 and indicating that MBS2 cannot be received by UE2 in the RRC / CM inactive state, and the two information parts indicating the current active state of MBS session3 and indicating that MBS3 cannot be received by UE2 in the RRC / CM inactive state can all be combined into one item in each MBS configuration information, and the corresponding value is assigned to this item in the form of "mbs-SessionConfig", finally forming the corresponding MBS configuration information:

[0448] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0449] MRB-ToAddMod-r17 ::=SEQUENCE {

[0450] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0451] mbs-SessionConfig ::=SEQUENCE {

[0452] mbs-SessionConfig01

[0453] }

[0454] mrb-Identity-r17MRB-Identity-r17,

[0455] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0456] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0457] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0458] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP

[0459] …}

[0460] MRB-ToAddMod-r17 ::=SEQUENCE {

[0461] mbs-SessionId-r17TMGI-r17OPTIONAL,-- Cond MRBSetup

[0462] mbs-SessionConfig ::=SEQUENCE {

[0463] mbs-SessionConfig10

[0464] }

[0465] mrb-Identity-r17MRB-Identity-r17,

[0466] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0467] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0468] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0469] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP

[0470] …}

[0471] MRB-ToAddMod-r17 ::=SEQUENCE {

[0472] mbs-SessionId-r17TMGI-r17OPTIONAL,-- Cond MRBSetup

[0473] mbs-SessionConfig ::=SEQUENCE {

[0474] mbs-SessionConfig10

[0475] }

[0476] mrb-Identity-r17MRB-Identity-r17,

[0477] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0478] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0479] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0480] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP

[0481] …}

[0482] In one embodiment of the present invention, the PDCCH scrambled by SC-RNTI schedules multicast MCCH information. If the configuration information of the multicast MCCH is carried by a dedicated message, and the multicast MCCH information also carries MBS configuration information, when the indication information is independent of the MBS configuration information, the indication information is used to indicate the active state and / or deactivated state of the multicast session joined by the user equipment corresponding to C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC / CM inactive state after activation.

[0483] When the indication information is in MBS configuration information, MBS configuration information corresponds to some or all of the multicast sessions joined by the user equipment corresponding to C-RNTI. Each MBS configuration information includes indication information for the current activation status of its corresponding multicast session, and / or whether the multicast service corresponding to it can be received by the user equipment in the RRC / CM inactive state after activation.

[0484] Specifically, network devices use dedicated messages to carry the configuration information of the multicast MCCH and use C-RNTI to scramble the PDCCH of the dedicated messages, enabling user equipment corresponding to the C-RNTI to receive the dedicated messages, obtain the configuration information of the multicast MCCH, and then obtain indication information. Correspondingly, the configuration information of the multicast MCCH can carry the transmission configuration information (PTM configuration) of all multicast services received by the user equipment, and the transmission configuration information of all multicast services received by the user equipment can include all or part of the MBS configuration information of the multicast services.

[0485] When the indication information exists in the MBS configuration information, the part of the indication information that indicates the current active state of the corresponding multicast session and the part of the indication information that indicates whether the corresponding multicast service can be received by the user equipment in the RRC / CM inactive state after activation can be indicated as two items in the MBS configuration information, or they can be combined as one item in the MBS configuration information.

[0486] For example, if User Equipment 1 (UE1) has joined a multicast service MBS1, and MBS session1 is active, the information indicating the current active state of MBS session1 is assigned a value of "0" using the first assignment method. The MBS configuration information can be represented as follows:

[0487] The information indicating that MBS session1 is currently active will be included as an item in the MBS configuration information in the form of "mbs-SessionActiveInAcative", and a corresponding value will be assigned to this item to form the final MBS configuration information:

[0488] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0489] MRB-ToAddMod-r17 ::=SEQUENCE {

[0490] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0491] mbs-SessionActiveInAcative0

[0492] mrb-Identity-r17MRB-Identity-r17,

[0493] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0494] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0495] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0496] pdcp-Config-r17PDCP-ConfigOPTIONAL,--Cond PDCP ...

[0497] }

[0498] For example, if User Equipment 1 (UE1) is currently enrolled in a multicast service MBS1, and MBS1 cannot be received by UE1 in an inactive RRC / CM state, when the indication information uses the seventh assignment method to assign a value of "1" to the part indicating whether MBS1 can be received by UE1 in an inactive RRC / CM state, the MBS configuration information can be represented as follows:

[0499] The information indicating that MBS1 cannot be received by UE1 in the RRC / CM inactive state is presented as "mbs-Receive" and included as an item in the MBS configuration information. A value is then assigned to this item, and the corresponding MBS configuration information is finally formed.

[0500] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0501] MRB-ToAddMod-r17 ::=SEQUENCE {

[0502] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0503] mbs-Receive1

[0504] mrb-Identity-r17MRB-Identity-r17,

[0505] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0506] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0507] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0508] pdcp-Config-r17PDCP-ConfigOPTIONAL,--Cond PDCP ...

[0509] }

[0510] For example, if User Equipment 1 (UE1) has joined a multicast service MBS1, and the multicast session MBS session1 of MBS1 is active, but MBS1 cannot be received by UE1 which is in an inactive RRC / CM state, and the indication information uses the first assignment method to assign a value of "0" to the part indicating the current active state of MBS session1, and uses the seventh assignment method to assign a value of "1" to the part indicating whether MBS1 can be received by UE1 which is in an inactive RRC / CM state, the MBS configuration information can be represented as follows:

[0511] Specifically, the information indicating that MBS session1 is currently active can be included as an item in the MBS configuration information in the form of "mbs-SessionActiveInAcative" and a corresponding value can be assigned to it. The information indicating that MBS1 cannot be received by UE1 in the RRC / CM inactive state can be included as an item in the MBS configuration information in the form of "mbs-Receive" and a corresponding value can be assigned to it. Finally, the corresponding MBS configuration information is formed.

[0512] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0513] MRB-ToAddMod-r17 ::=SEQUENCE {

[0514] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0515] mbs-SessionActiveInAcative0

[0516] mbs-Receive1

[0517] mrb-Identity-r17MRB-Identity-r17,

[0518] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0519] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0520] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0521] pdcp-Config-r17PDCP-ConfigOPTIONAL,--Cond PDCP ...

[0522] }

[0523] This can be composed of two information parts: one indicating that MBS session1 is currently active, and the other indicating that MBS1 cannot be received by UE1 in an inactive RRC / CM state. These are presented as "mbs-SessionConfig" and included as an item in the MBS configuration information. A value is then assigned to this item, ultimately forming the corresponding MBS configuration information.

[0524] MRB-ToAddModList-r17 ::=SEQUENCE (SIZE (1..maxMRB-r17)) OF MRB-ToAddMod-r17

[0525] MRB-ToAddMod-r17 ::=SEQUENCE {

[0526] mbs-SessionId-r17TMGI-r17OPTIONAL,--Cond MRBSetup

[0527] mbs-SessionConfig ::=SEQUENCE {

[0528] mbs-SessionConfig01

[0529] }

[0530] mrb-Identity-r17MRB-Identity-r17,

[0531] mrb-IdentityNew-r17MRB-Identity-r17OPTIONAL, -- Need N

[0532] reestablishPDCP-r17ENUMERATED{true}OPTIONAL,--Need N

[0533] recoverPDCP-r17ENUMERATED{true}OPTIONAL,-- Need N

[0534] pdcp-Config-r17PDCP-ConfigOPTIONAL,-- Cond PDCP

[0535] …}

[0536] The present invention also provides a transmission apparatus for MBS services, such as... Figure 3 As shown, it includes:

[0537] The generation module 100 is used to generate indication information, which is used to indicate the current activation status of the multicast session corresponding to the multicast service, and / or the indication information is used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or the CM inactive state after activation.

[0538] The sending module 200 is used to send indication information to the user equipment.

[0539] In one embodiment of the present invention, the generation module includes:

[0540] The first generation unit is used to generate indication information. The total number of bits in the information part of the indication information that indicates the current active state of the multicast session is the number of multicast sessions. Each bit is assigned a value of 0 or 1 to indicate whether the corresponding multicast session is in an active or deactivated state.

[0541] In one embodiment of the present invention, the generation module includes:

[0542] The second generation unit is used to generate indication information. The information portion of the indication information used to indicate the current active state of the multicast session includes Session ID, TMGI, G-RNTI, or MRB ID, which are used to indicate the current active state of the corresponding multicast session.

[0543] In one embodiment of the present invention, the generation module includes:

[0544] The third generation unit is used to generate indication information. The total number of bits in the information portion indicating whether a multicast service can be received by a user equipment in an RRC inactive state or a CM inactive state after activation is equal to the number of multicast services. Each bit is assigned a value of 0 or 1 to indicate whether each corresponding multicast session can be received by a user equipment in an RRC or CM inactive state after activation, or cannot be received by a user equipment in an RRC or CM inactive state.

[0545] In one embodiment of the present invention, the sending module includes:

[0546] The first sending unit is used to send paging messages to user equipment; the paging message carries indication information.

[0547] In one embodiment of the present invention, the first transmitting unit includes:

[0548] The first transmitting component uses the PDCCH of the paging message scrambled by G-RNTI. The paging message carries indication information to indicate the current active state of the multicast session corresponding to G-RNTI, and / or to indicate whether the multicast service corresponding to G-RNTI can be received by user equipment in the inactive state of RRC or CM after activation.

[0549] In one embodiment of the present invention, the first transmitting unit includes:

[0550] The second transmitting component uses P-RNTI to scramble the PDCCH of the paging message. The paging message carries indication information to indicate the current active status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in an inactive state of RRC or CM after activation.

[0551] In one embodiment of the present invention, the sending module includes:

[0552] The second sending unit is used to send a proprietary message carrying indication information to the user equipment to directly send the indication information.

[0553] In one embodiment of the present invention, the second transmitting unit includes:

[0554] The first transmitting component uses a C-RNTI to scramble a dedicated scheduling message PDCCH. The C-RNTI corresponds to the user equipment. The dedicated message carries indication information, which is used to indicate the current active state of the multicast session joined by the user equipment; and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0555] In one embodiment of the present invention, the second transmitting unit includes:

[0556] The second transmitting component uses the PDCCH of the G-RNTI scrambled scheduling proprietary message to indicate the current active state of the multicast session corresponding to the G-RNTI, and / or to indicate whether the multicast service corresponding to the G-RNTI can be received by user equipment in the RRC or CM inactive state after activation.

[0557] In one embodiment of the present invention, the second transmitting unit includes:

[0558] The third transmitting component uses a specific scrambling code to scramble the PDCCH of the scheduling proprietary message. The specific scrambling code can be recognized by all user equipment. The indication information is used to indicate the current active status of all multicast sessions configured by the network equipment, and / or to indicate whether each multicast service configured by the network equipment can be received by user equipment in the RRC or CM inactive state after activation.

[0559] In one embodiment of the present invention, the sending module includes:

[0560] The third sending unit is used to send an RRC connection release message to the user equipment; the RRC connection release message carries indication information.

[0561] In one embodiment of the present invention, the third transmitting unit includes:

[0562] The first transmitting component uses C-RNTI to scramble the PDCCH of the RRC connection release message. C-RNTI corresponds to the user equipment. The RRC connection release message carries indication information, which is used to indicate the current active state of the multicast session joined by the user equipment corresponding to C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0563] In one embodiment of the present invention, the RRC connection release message also carries MRB configuration information;

[0564] The indication information is independent of the MRB configuration information, or

[0565] The indication information is located in the MRB configuration information. Each MRB configuration information includes indication information for indicating whether its corresponding multicast session is currently active and / or whether its corresponding multicast service can be received by user equipment in the RRC or CM inactive state after activation.

[0566] In one embodiment of the present invention, the sending module includes:

[0567] The fourth sending unit is used to send a system message to the user equipment for carrying configuration information of the multicast MCCH; the system message carries indication information.

[0568] In one embodiment of the present invention, the fourth transmitting unit includes:

[0569] The first transmitting component uses the SI-RNTI scrambled scheduling system message PDCCH. The system message carries indication information to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

[0570] In one embodiment of the present invention, the sending module includes:

[0571] The fifth sending unit is used to send a dedicated message to the user equipment for carrying configuration information of the multicast MCCH; the dedicated message carries indication information.

[0572] In one embodiment of the present invention, the fifth transmitting unit includes:

[0573] The first transmitting component uses the PDCCH of the C-RNTI scrambled scheduling special message. The special message carries indication information to indicate the current activation status of the multicast session joined by the user equipment corresponding to the C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0574] In one embodiment of the present invention, the fifth transmitting unit includes:

[0575] The second transmitting component uses the PDCCH of the C-RNTI scrambled scheduling special message. The special message carries indication information to indicate the current active status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

[0576] In one embodiment of the present invention, the sending module includes:

[0577] The sixth transmitting unit is used to send multicast MCCH information to the user equipment. The multicast MCCH information carries indication information.

[0578] In one embodiment of the present invention, the sixth transmitting unit includes:

[0579] The first transmitting component uses SC-RNTI to scramble the scheduling multicast MCCH information in the PDCCH. The multicast MCCH information carries indication information to indicate the current active status of all multicast sessions configured by the network device or all or part of the multicast sessions joined by the user equipment, and / or to indicate whether all multicast sessions configured by the network device or all or part of the multicast sessions joined by the user equipment can be received by user equipment in the RRC or CM inactive state after activation.

[0580] In one embodiment of the present invention, the process of sending multicast MCCH information to a user equipment includes:

[0581] When the configuration information of the multicast MCCH is carried by system messages:

[0582] If the indication information is independent of the MBS configuration information, the indication information is used to indicate that all multicast sessions configured by the network device are currently active, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

[0583] If the indication information is in the MBS configuration information, each MBS configuration information includes indication information for indicating that its corresponding multicast session is currently active, and / or whether its corresponding multicast service can be received by user equipment in the RRC or CM inactive state after activation.

[0584] In one embodiment of the present invention, the process of sending multicast MCCH information to a user equipment includes:

[0585] When the configuration information of the multicast MCCH is carried by a dedicated message:

[0586] If the indication information is independent of the MBS configuration information, the indication information is used to indicate the current activation status of the multicast session joined by the user equipment corresponding to C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0587] If the indication information is in the MBS configuration information, each MBS configuration information includes indication information for indicating that its corresponding multicast session is currently active, and / or indicating whether its corresponding multicast service can be received by user equipment in the RRC or CM inactive state after activation.

[0588] This invention provides a receiving device for MBS services, such as... Figure 4 As shown, it includes:

[0589] The receiving module 300 receives indication information from the user equipment; the indication information is used to indicate the current activation state of the multicast session corresponding to the multicast service, and / or the indication information is used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or the CM inactive state after activation.

[0590] The processing module 400 is used to receive multicast services according to the indication information in the RRC inactive state or CM inactive state.

[0591] In one embodiment of the present invention, the processing module includes:

[0592] The first processing unit is used to receive and analyze the indication information. The total number of bits in the information part of the indication information that indicates the current active state of the multicast session is the number of multicast sessions. Each bit is assigned a value of 0 or 1 to indicate whether the corresponding multicast session is in an active or deactivated state.

[0593] In one embodiment of the present invention, the processing module includes:

[0594] The second processing unit is used to receive and analyze indication information. The information portion of the indication information used to indicate the current active state of the multicast session includes Session ID, TMGI, G-RNTI, or MRB ID, which are used to indicate the current active state of the corresponding multicast session.

[0595] In one embodiment of the present invention, the processing module includes:

[0596] The third processing unit is used to receive and analyze the indication information. The total number of bits in the information portion of the indication information that indicates whether the multicast service can be received by user equipment in the RRC inactive state or CM inactive state after activation is the number of multicast services. Each bit is assigned a value of 0 or 1 to indicate whether each corresponding multicast session can be received by user equipment in the RRC or CM inactive state after activation, or cannot be received by user equipment in the RRC or CM inactive state.

[0597] In one embodiment of the present invention, the receiving module includes:

[0598] The first receiving unit is used to receive paging messages from network devices and obtain the indication information carried in the paging messages.

[0599] In one embodiment of the present invention, the receiving module includes a first receiving unit, the first receiving unit comprising:

[0600] The first receiving component is used to listen to the PDCCH scrambled by G-RNTI, receive paging messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the paging message to indicate the current active state of the multicast session corresponding to G-RNTI, and / or indicate whether the multicast service corresponding to G-RNTI can be received by user equipment in the inactive state of RRC or CM after activation.

[0601] In one embodiment of the present invention, the receiving module includes a first receiving unit, the first receiving unit comprising:

[0602] The second receiving component is used to listen to the PDCCH scrambled by P-RNTI, receive paging messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the paging message to indicate the current activation status of the multicast session configured by the network device, and / or to indicate whether the multicast service corresponding to G-RNTI can be received by user equipment in the RRC or CM inactive state after activation.

[0603] In one embodiment of the present invention, the receiving module includes:

[0604] The second receiving unit is used to receive a proprietary message carrying indication information, so as to directly receive the indication information.

[0605] In one embodiment of the present invention, the second receiving unit includes:

[0606] The first receiving component is used to listen to the PDCCH scrambled by C-RNTI, receive proprietary messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the proprietary messages to indicate the current active state of the multicast session joined by the user equipment; and / or indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0607] In one embodiment of the present invention, the second receiving unit includes:

[0608] The second receiving component is used to listen to the PDCCH scrambled by G-RNTI, receive proprietary messages according to the scheduling information in the PDCCH, and obtain the indication information carried by the proprietary messages to indicate the current activation status of the multicast session corresponding to G-RNTI, and / or indicate whether the multicast service corresponding to G-RNTI can be received by user equipment in the RRC or CM inactive state after activation.

[0609] In one embodiment of the present invention, the second receiving unit includes:

[0610] The third receiving component is used to listen to the PDCCH scrambled with a specific scrambling code, receive proprietary messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the proprietary messages to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

[0611] In one embodiment of the present invention, the receiving module includes:

[0612] The third receiving unit is used to receive RRC connection release messages from network devices and obtain the indication information carried in the RRC connection release messages.

[0613] In one embodiment of the present invention, the third receiving unit includes:

[0614] The first receiving unit is used to listen to the PDCCH of the RRC connection release message scrambled by C-RNTI, receive the RRC connection release message according to the scheduling information in the PDCCH, and obtain the indication information carried in the RRC connection release message to indicate the current active state of the multicast session joined by the user equipment corresponding to C-RNTI, and / or indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0615] In one embodiment of the present invention, the RRC connection release message also carries MRB configuration information;

[0616] The indication information is independent of the MRB configuration information, or

[0617] The indication information is located in the MRB configuration information. Each MRB configuration information includes indication information for indicating whether its corresponding multicast session is currently active and / or whether its corresponding multicast service can be received by user equipment in the RRC or CM inactive state after activation.

[0618] In one embodiment of the present invention, the receiving module includes:

[0619] The fourth receiving unit is used to receive system messages from network devices for carrying configuration information of the multicast MCCH; and to obtain indication information carried in the system messages.

[0620] In one embodiment of the present invention, the fourth receiving unit includes:

[0621] Listen to the PDCCH scrambled and scheduled by SI-RNTI, receive system messages based on the scheduling information in the PDCCH, and obtain the indication information carried in the system messages to indicate the current activation status of all multicast sessions configured by the network device, and / or indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

[0622] In one embodiment of the present invention, the receiving module includes:

[0623] The fifth receiving unit is used to receive a dedicated message from the network device for carrying configuration information of the multicast MCCH, the dedicated message being used to carry MCCH configuration information; and to obtain the indication information carried in the dedicated message.

[0624] In one embodiment of the present invention, the fifth receiving unit includes:

[0625] The first receiving unit is used to listen to the PDCCH scrambled and scheduled by C-RNTI, receive dedicated messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the dedicated messages to indicate the current activation status of the multicast session joined by the user equipment corresponding to C-RNTI, and / or indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0626] In one embodiment of the present invention, the fifth receiving unit includes:

[0627] The second receiving component is used to listen to the PDCCH scrambled and scheduled by C-RNTI, receive dedicated messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the dedicated messages to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

[0628] In one embodiment of the present invention, the receiving module includes:

[0629] The sixth receiving unit is used to receive multicast MCCH information from network devices and obtain the indication information carried in the multicast MCCH information.

[0630] In one embodiment of the present invention, the fifth receiving unit includes:

[0631] The first receiving component is used to listen to the PDCCH using SC-RNTI, receive the multicast MCCH message according to the scheduling information in the PDCCH, and obtain the indication information carried in the multicast MCCH message to indicate the current activation status of all multicast sessions configured by the network device or all or part of the multicast sessions joined by the user equipment, and / or indicate whether all multicast sessions configured by the network device or all or part of the multicast sessions joined by the user equipment can be received by user equipment in the RRC or CM inactive state after activation.

[0632] In one embodiment of the present invention, the process of receiving multicast MCCH information from a user equipment includes:

[0633] When the configuration information of the multicast MCCH is carried by system messages:

[0634] If the indication information is independent of the MBS configuration information, the indication information is used to indicate that all multicast sessions configured by the network device are currently active, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

[0635] If the indication information is in the MRB configuration information, each MRB configuration information includes indication information for indicating that its corresponding multicast session is currently active, and / or whether its corresponding multicast service can be received by user equipment in the RRC or CM inactive state after activation.

[0636] In one embodiment of the present invention, the process of receiving multicast MCCH information from a user equipment includes:

[0637] When the configuration information of the multicast MCCH is carried by a dedicated message:

[0638] If the indication information is independent of the MBS configuration information, the indication information is used to indicate the current activation status of the multicast session joined by the user equipment corresponding to C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation.

[0639] If the indication information is in the MRB configuration information, each MRB configuration information includes indication information for indicating that its corresponding multicast session is currently active, and / or indicating whether its corresponding multicast service can be received by user equipment in the RRC or CM inactive state after activation.

[0640] The present invention also provides a base station, including a processor and a memory, wherein the memory is configured to store a computer program, and when the computer program is executed by the processor, the processor enables the processor to implement the above-described method for transmitting instruction information.

[0641] The present invention also provides a terminal, including a processor and a memory, wherein the memory is configured to store a computer program, and when the computer program is executed by the processor, the processor enables the processor to implement the above-described method for receiving instruction information.

[0642] The present invention also provides a computer-readable storage medium including a computer program, which, when executed by a processor, causes the processor to perform a method such as sending instruction information or receiving instruction information as described in any one of the following.

[0643] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any other combination. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital video disc (DVD)), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0644] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0645] The above are merely preferred embodiments of the present invention and are not intended to limit the embodiments and scope of protection of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for activating MBS services, characterized in that, The method is performed by a network device, and the method includes: Generate indication information; the indication information is used to indicate the current activation state of the multicast session corresponding to the multicast service, and / or the indication information is used to indicate whether the multicast service can be received by user equipment in the RRC inactive state or CM inactive state after activation; Send the instruction information to the user equipment; The process of sending instruction information to user equipment includes: Send an RRC connection release message to the user equipment; the RRC connection release message carries the indication information; and / or Send multicast MCCH information to the user equipment; the multicast MCCH information carries the indication information; The process of sending the RRC connection release message to the user equipment includes: The PDCCH of the RRC connection release message is scrambled using C-RNTI, where C-RNTI corresponds to the user equipment. The RRC connection release message carries the indication information, which is used to indicate the current active state of the multicast session joined by the user equipment corresponding to C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. The RRC connection release message also carries MRB configuration information; The indication information is independent of the MRB configuration information; or The indication information is located in the MRB configuration information. Each MRB configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or whether the multicast service corresponding to it can be received by the user equipment in the RRC or CM inactive state after activation. The process of sending the multicast MCCH information to the user equipment includes: The PDCCH of the multicast MCCH information is scrambled and scheduled using SC-RNTI. The multicast MCCH information carries indication information to indicate the current activation status of all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment, and / or to indicate whether all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. The multicast MCCH information also carries MBS configuration information; When using system messages to carry the configuration information of the multicast MCCH: If the indication information is independent of the MBS configuration information, then the indication information is used to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in an RRC or CM inactive state after activation; If the indication information is in the MBS configuration information, each MBS configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or whether the multicast service corresponding to it can be received by the user equipment in the RRC or CM inactive state after activation; or When using a dedicated message to carry the configuration information of the multicast MCCH: If the indication information is independent of the MBS configuration information, the indication information is used to indicate the current activation status of the multicast session joined by the user equipment corresponding to the C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. If the indication information is in the MBS configuration information, each MBS configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or indication information for indicating whether the corresponding multicast service can be received by the user equipment in the RRC or CM inactive state after activation.

2. The method for activating MBS services according to claim 1, characterized in that, The current activation state includes an active state and a deactivated state, and the multicast session includes: All multicast sessions currently joined by the user equipment; or The user equipment is currently in an active state among all the multicast sessions it has joined; or The multicast sessions currently joined by the user equipment are in an inactive state; or The user equipment is currently participating in a portion of the multicast sessions; or All multicast sessions configured on the network device; The multicast sessions that are active among all multicast sessions configured on the network device; or The multicast sessions configured on the network device are in an inactive state; or The network device is configured with partial multicast sessions.

3. The method for activating MBS services according to claim 1, characterized in that, In the generated indication information, the total number of bits in the information portion used to indicate the current active state of the multicast session is equal to the number of multicast sessions. Each bit is assigned a value of 0 or 1 to indicate whether the corresponding multicast session is in an active or deactivated state.

4. The method for activating MBS services according to claim 1, characterized in that, The generated indication information includes a portion of the information used to indicate the current active state of the multicast session, which includes a Session ID, TMGI, G-RNTI, or MRBID, to indicate the current active state of the corresponding multicast session.

5. The method for activating MBS services according to claim 1, characterized in that, In the generated indication information, the total number of bits in the information portion used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or the CM inactive state after activation is equal to the number of multicast services. Each bit is assigned a value of 0 or 1 to indicate whether each corresponding multicast session can be received by the user equipment in the RRC or CM inactive state after activation, or cannot be received by the user equipment in the RRC or CM inactive state.

6. The method for activating MBS services according to any one of claims 1-5, characterized in that, The process of sending instruction information to user equipment also includes: Send a paging message to the user equipment; the paging message carries the indication information; and / or Send a proprietary message carrying the indication information to the user equipment to directly send the indication information; and / or A system message is sent to the user equipment to carry configuration information for the multicast MCCH; the system message carries the indication information. and / or Send a dedicated message to the user equipment for carrying configuration information for the multicast MCCH; the dedicated message carries the indication information.

7. The method for activating MBS services according to claim 6, characterized in that, The process of sending a paging message to a user equipment includes: The PDCCH of the paging message is scrambled using G-RNTI. The paging message carries the indication information, which is used to indicate the current active state of the multicast session corresponding to the G-RNTI, and / or to indicate whether the multicast service corresponding to the G-RNTI can be received by the user equipment in the RRC or CM inactive state after activation. or The PDCCH of the paging message is scrambled using P-RNTI. The paging message carries the indication information to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in an inactive state of RRC or CM after activation.

8. The method for activating MBS services according to claim 6, characterized in that, The process of sending the proprietary message to the user equipment includes: The PDCCH of the proprietary message is scrambled using C-RNTI, the C-RNTI corresponding to the user equipment, the proprietary message carries the indication information, the indication information is used to indicate the current active state of the multicast session joined by the user equipment; and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation; or The PDCCH of the proprietary message is scrambled using G-RNTI. The indication information is used to indicate the current activation state of the multicast session corresponding to the G-RNTI, and / or to indicate whether the multicast service corresponding to the G-RNTI can be received by the user equipment in the RRC or CM inactive state after activation. or The PDCCH of the proprietary message is scrambled using a specific scrambling code that can be recognized by all the user equipments. The indication information is used to indicate the current active status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipments in an inactive state of RRC or CM after activation.

9. The method for activating MBS services according to claim 6, characterized in that, The process of sending the system message carrying the configuration information of the multicast MCCH to the user equipment includes: The PDCCH of the system message is scrambled using SI-RNTI. The system message carries the indication information to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in an inactive state of RRC or CM after activation.

10. The method for activating MBS services according to claim 6, characterized in that, The process of sending the dedicated message carrying the configuration information of the multicast MCCH to the user equipment includes: The PDCCH of the dedicated message is scrambled using C-RNTI. The dedicated message carries the indication information, which is used to indicate the current activation state of the multicast session joined by the user equipment corresponding to the C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. or The PDCCH of the dedicated message is scrambled using C-RNTI. The dedicated message carries the indication information to indicate the current active status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in an inactive state of RRC or CM after activation.

11. A method for activating MBS services, characterized in that, The method is executed by a user equipment, and the method includes: Receive indication information from network devices; the indication information is used to indicate the current activation status of the multicast session corresponding to the multicast service, and / or the indication information is used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or CM inactive state after activation; In the RRC inactive state or CM inactive state, the multicast service is received according to the indication information; The process of receiving instruction information from network devices includes: Receive an RRC connection release message from a network device and obtain the indication information carried in the RRC connection release message; and / or Receive multicast MCCH information from a network device and obtain the indication information carried in the multicast MCCH information; The process of receiving an RRC connection release message from a network device includes: Listen to the PDCCH that scrambles and schedules the RRC connection release message by C-RNTI, receive the RRC connection release message according to the scheduling information in the PDCCH, and obtain the indication information carried in the RRC connection release message to indicate the current active state of the multicast session joined by the user equipment corresponding to C-RNTI, and / or indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. The RRC connection release message also carries MRB configuration information; The indication information is independent of the MRB configuration information; or The indication information is located in the MRB configuration information. Each MRB configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or whether the multicast service corresponding to it can be received by the user equipment in the RRC or CM inactive state after activation. The process of receiving the multicast MCCH information from the user equipment includes: The SC-RNTI is used to listen to the PDCCH. Based on the scheduling information in the PDCCH, the multicast MCCH information is received. The indication information carried in the multicast MCCH information is obtained to indicate the current activation status of all multicast sessions configured by the network device or all or part of the multicast sessions joined by the user equipment, and / or to indicate whether all multicast sessions configured by the network device or all or part of the multicast sessions joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. The multicast MCCH information also carries MBS configuration information; When the configuration information of the multicast MCCH is carried by system messages: If the indication information is independent of the MBS configuration information, then the indication information is used to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in an RRC or CM inactive state after activation; If the indication information is in the MBS configuration information, each MBS configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or whether the multicast service corresponding to it can be received by the user equipment in the RRC or CM inactive state after activation; or When the configuration information of the multicast MCCH is carried by a dedicated message: If the indication information is independent of the MBS configuration information, the indication information is used to indicate the current activation status of the multicast session joined by the user equipment corresponding to the C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. If the indication information is in the MBS configuration information, each MBS configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or indication information for whether its corresponding multicast service can be received by the user equipment in the RRC or CM inactive state after activation.

12. The method for activating MBS services according to claim 11, characterized in that, The current activation state includes an active state and a deactivated state, and the multicast session includes: All multicast sessions currently joined by the user equipment; or The user equipment is currently in an active state among all the multicast sessions it has joined; or The multicast sessions currently joined by the user equipment are in an inactive state; or The user equipment is currently participating in a portion of the multicast sessions; or All multicast sessions configured on the network device; The multicast sessions that are active among all multicast sessions configured on the network device; or The multicast sessions configured on the network device are in an inactive state; or The network device is configured with partial multicast sessions.

13. The method for activating MBS services according to claim 11, characterized in that, In the received indication information, the total number of bits in the information portion used to indicate the current active state of the multicast session is equal to the number of multicast sessions. Each bit is assigned a value of 0 or 1 to indicate whether the corresponding multicast session is in an active or deactivated state.

14. The method for activating MBS services according to claim 11, characterized in that, The received indication information includes a portion of the information indicating the current activation state of the multicast session, which includes a Session ID, TMGI, G-RNTI, or MRBID, to indicate whether the corresponding multicast session is in an active or deactivated state.

15. The method for activating MBS services according to claim 11, characterized in that, In the received indication information, the total number of bits in the information portion used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or CM inactive state after activation is equal to the number of multicast services. Each bit is assigned a value of 0 or 1 to indicate whether each corresponding multicast session can be received by the user equipment in the RRC or CM inactive state after activation, or cannot be received by the user equipment in the RRC or CM inactive state.

16. The method for activating MBS services according to claim 11, characterized in that, The process of receiving instruction information from network devices also includes: Receive a paging message from a network device; obtain the indication information carried in the paging message; and / or Receive a proprietary message carrying the indication information to directly receive the indication information; and / or Receive a system message from a network device for carrying configuration information of the multicast MCCH; obtain the indication information carried in the system message; and / or Receive a dedicated message from a network device for carrying configuration information of the multicast MCCH, the dedicated message being used to carry the MCCH configuration information; obtain the indication information carried in the dedicated message.

17. The method for activating MBS services according to claim 16, characterized in that, The process of receiving a paging message from a network device includes: Listen to the PDCCH scrambled by G-RNTI, receive paging messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the paging message to indicate the current active state of the multicast session corresponding to the G-RNTI, and / or indicate whether the multicast service corresponding to the G-RNTI can be received by the user equipment in the RRC or CM inactive state after activation. or Listen to the PDCCH scrambled by P-RNTI, receive paging messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the paging message to indicate the current activation status of the multicast session configured by the network device, and / or indicate whether the multicast service corresponding to the G-RNTI can be received by the user equipment in the RRC or CM inactive state after activation.

18. The method for activating MBS services according to claim 16, characterized in that, The process of receiving instruction information from network devices includes: Listen to the PDCCH scrambled by C-RNTI, receive dedicated messages according to the scheduling information in the PDCCH, and obtain the indication information carried by the dedicated messages to indicate the current active state of the multicast session joined by the user equipment; and / or indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. or Listen to the PDCCH scrambled by G-RNTI, receive a dedicated message according to the scheduling information in the PDCCH, and obtain the indication information carried by the dedicated message to indicate the current activation state of the multicast session corresponding to the G-RNTI, and / or indicate whether the multicast service corresponding to the G-RNTI can be received by the user equipment in the RRC or CM inactive state after activation. or Listen to the PDCCH scrambled with a specific scrambling code, receive proprietary messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the proprietary messages to indicate the current activation status of all multicast sessions configured by the network device, and / or indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

19. The method for activating MBS services according to claim 16, characterized in that, The process of receiving the system message carrying the configuration information of the multicast MCCH from the network device includes: Listen to the PDCCH scrambled and scheduled by SI-RNTI, receive the system message according to the scheduling information in the PDCCH, and obtain the indication information carried in the system message to indicate the current activation status of all multicast sessions configured by the network device, and / or indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

20. The method for activating MBS services according to claim 16, characterized in that, The process of receiving the dedicated message carrying the configuration information of the multicast MCCH from the network device includes: Listen to the PDCCH scrambled and scheduled by C-RNTI, receive the dedicated message according to the scheduling information in the PDCCH, and obtain the indication information carried by the dedicated message to indicate the current activation state of the multicast session joined by the user equipment corresponding to the C-RNTI, and / or indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. or Listen to the PDCCH scrambled and scheduled by C-RNTI, receive the dedicated message according to the scheduling information in the PDCCH, and obtain the indication information carried by the dedicated message to indicate the current activation status of all multicast sessions configured by the network device, and / or indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

21. A transmission apparatus for MBS services, characterized in that, include: A generation module is used to generate indication information, which is used to indicate the current activation state of the multicast session corresponding to the multicast service, and / or the indication information is used to indicate whether the multicast service can be received by a user equipment in an RRC inactive state or a CM inactive state after activation. The sending module is used to send indication information to the user equipment; The sending module includes: The third sending unit is used to send an RRC connection release message to the user equipment; the RRC connection release message carries the indication information; and / or The sixth sending unit is used to send multicast MCCH information to the user equipment, wherein the multicast MCCH information carries the indication information; The third sending unit includes: a PDCCH that scrambles and schedules the RRC connection release message using C-RNTI, wherein the C-RNTI corresponds to the user equipment, and the RRC connection release message carries the indication information, used to indicate the current active state of the multicast session joined by the user equipment corresponding to the C-RNTI, and / or used to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation; The RRC connection release message also carries MRB configuration information; The indication information is independent of the MRB configuration information; or The indication information is located in the MRB configuration information. Each MRB configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or whether the multicast service corresponding to it can be received by the user equipment in the RRC or CM inactive state after activation. The sixth transmitting unit includes: The PDCCH of the multicast MCCH information is scrambled using SC-RNTI. The multicast MCCH information carries indication information to indicate the current activation status of all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment, and / or to indicate whether all multicast sessions configured by the network device or all or some multicast sessions joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. The multicast MCCH information also carries MBS configuration information; When using system messages to carry the configuration information of the multicast MCCH: If the indication information is independent of the MBS configuration information, then the indication information is used to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in an RRC or CM inactive state after activation; If the indication information is in the MBS configuration information, each MBS configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or whether the multicast service corresponding to it can be received by the user equipment in the RRC or CM inactive state after activation; or When using a dedicated message to carry the configuration information of the multicast MCCH: If the indication information is independent of the MBS configuration information, the indication information is used to indicate the current activation status of the multicast session joined by the user equipment corresponding to the C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. If the indication information is in the MBS configuration information, each MBS configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or indication information for indicating whether the corresponding multicast service can be received by the user equipment in the RRC or CM inactive state after activation.

22. The transmitting device according to claim 21, characterized in that, The generation module includes: The first generation unit is used to generate the indication information. The total number of bits in the information part of the indication information that indicates the current active state of the multicast session is the number of multicast sessions. Each bit is assigned a value of 0 or 1 to indicate that each corresponding multicast session is in an active state or a deactivated state, respectively. or The second generation unit is used to generate the indication information, wherein the information portion of the indication information used to indicate the current activation state of the multicast session includes Session ID or TMGI or G-RNTI or MRB ID, so as to indicate the current activation state of the corresponding multicast session. or The third generation unit is used to generate the indication information. The total number of bits in the information portion of the indication information used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or the CM inactive state after activation is the number of multicast services. Each bit is assigned a value of 0 or 1 to indicate whether each corresponding multicast session can be received by the user equipment in the RRC or CM inactive state after activation, or cannot be received by the user equipment in the RRC or CM inactive state.

23. The transmitting device according to claim 21, characterized in that, The sending module also includes: The first sending unit is used to send a paging message to the user equipment; the paging message carries the indication information; and / or The second sending unit is used to send a proprietary message carrying the indication information to the user equipment to directly send the indication information; and / or The fourth sending unit is used to send a system message to the user equipment for carrying configuration information of the multicast MCCH; the system message carries the indication information; and / or The fifth sending unit is used to send a dedicated message to the user equipment for carrying configuration information of the multicast MCCH; the dedicated message carries the indication information.

24. The transmitting device according to claim 23, characterized in that, The sending module includes: The first transmitting unit includes: The PDCCH of the paging message is scrambled using G-RNTI. The paging message carries the indication information, which is used to indicate the current active state of the multicast session corresponding to the G-RNTI, and / or to indicate whether the multicast service corresponding to the G-RNTI can be received by the user equipment in the RRC or CM inactive state after activation. Alternatively, P-RNTI can be used to scramble the PDCCH of the paging message, which carries the indication information to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in an RRC or CM inactive state after activation. And / or the second transmitting unit includes: The PDCCH of the proprietary message is scrambled using C-RNTI, the C-RNTI corresponding to the user equipment, the proprietary message carries the indication information, the indication information is used to indicate the current active state of the multicast session joined by the user equipment; and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation; Alternatively, the PDCCH of the proprietary message may be scrambled using G-RNTI. The indication information is used to indicate the current activation state of the multicast session corresponding to the G-RNTI, and / or to indicate whether the multicast service corresponding to the G-RNTI can be received by the user equipment in the RRC or CM inactive state after activation. Alternatively, a specific scrambling code may be used to scramble the PDCCH of the proprietary message, the specific scrambling code being recognizable by all the user equipments, and the indication information is used to indicate the current active status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipments in an inactive state of RRC or CM after activation; And / or the fourth transmitting unit includes: The PDCCH of the system message is scrambled using SI-RNTI. The system message carries the indication information to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in an inactive state of RRC or CM after activation. And / or the fifth transmitting unit includes: The PDCCH of the dedicated message is scrambled using C-RNTI. The dedicated message carries the indication information, which is used to indicate the current activation state of the multicast session joined by the user equipment corresponding to the C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. Alternatively, the PDCCH of the dedicated message can be scrambled using C-RNTI. The dedicated message carries the indication information used to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in an inactive state of RRC or CM after activation.

25. A receiving device for MBS services, characterized in that, include: The receiving module receives indication information from the user equipment; The indication information is used to indicate the current activation status of the multicast session corresponding to the multicast service, and / or the indication information is used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or CM inactive state after activation. The processing module is used to receive the multicast service according to the indication information in the RRC inactive state or CM inactive state. The receiving module includes: The third receiving unit is configured to receive an RRC connection release message from a network device and obtain the indication information carried in the RRC connection release message. The sixth receiving unit is used to receive multicast MCCH information from the network device and obtain the indication information carried in the multicast MCCH information; The third receiving unit includes: The first receiving component is configured to listen to the PDCCH of the RRC connection release message scrambled by C-RNTI, receive the RRC connection release message according to the scheduling information in the PDCCH, and obtain the indication information carried in the RRC connection release message to indicate the current activation state of the multicast session joined by the user equipment corresponding to C-RNTI, and / or indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. The RRC connection release message also carries MRB configuration information; The indication information is independent of the MRB configuration information; or The indication information is located in the MRB configuration information. Each MRB configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or whether the multicast service corresponding to it can be received by the user equipment in the RRC or CM inactive state after activation. The sixth receiving unit includes: The first receiving component is configured to listen to the PDCCH using SC-RNTI, receive the multicast MCCH information according to the scheduling information in the PDCCH, and obtain the indication information carried in the multicast MCCH information to indicate the current activation status of all multicast sessions configured by the network device or all or part of the multicast sessions joined by the user equipment, and / or indicate whether all multicast sessions configured by the network device or all or part of the multicast sessions joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation; The multicast MCCH information also carries MBS configuration information; When the configuration information of the multicast MCCH is carried by system messages: If the indication information is independent of the MBS configuration information, then the indication information is used to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in an RRC or CM inactive state after activation; If the indication information is in the MBS configuration information, each MBS configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or whether the multicast service corresponding to it can be received by the user equipment in the RRC or CM inactive state after activation; or When the configuration information of the multicast MCCH is carried by a dedicated message: If the indication information is independent of the MBS configuration information, the indication information is used to indicate the current activation status of the multicast session joined by the user equipment corresponding to the C-RNTI, and / or to indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. If the indication information is in the MBS configuration information, each MBS configuration information includes indication information for indicating the current activation status of its corresponding multicast session, and / or indication information for whether its corresponding multicast service can be received by the user equipment in the RRC or CM inactive state after activation.

26. The receiving device according to claim 25, characterized in that, The processing module includes: The first processing unit is used to receive the indication information and analyze it. The total number of bits in the information part of the indication information that indicates the current active state of the multicast session is the number of multicast sessions. Each bit is assigned a value of 0 or 1 to indicate that each corresponding multicast session is in an active state or a deactivated state, respectively. or The second processing unit is used to receive the indication information and analyze it. The information part of the indication information used to indicate the current active state of the multicast session includes Session ID or TMGI or G-RNTI or MRB ID, so as to indicate the current active state of the corresponding multicast session. or The third processing unit is used to receive and analyze the indication information. The total number of bits in the information portion of the indication information used to indicate whether the multicast service can be received by the user equipment in the RRC inactive state or CM inactive state after activation is the number of multicast services. Each bit is assigned a value of 0 or 1 to indicate whether each corresponding multicast session can be received by the user equipment in the RRC or CM inactive state after activation, or cannot be received by the user equipment in the RRC or CM inactive state.

27. The receiving device according to claim 25, characterized in that, The receiving module also includes: The first receiving unit is configured to receive a paging message from a network device and obtain the indication information carried in the paging message; and / or The second receiving unit is used to receive a proprietary message carrying the indication information, so as to directly receive the indication information; and / or The fourth receiving unit is configured to receive a system message from a network device for carrying configuration information of the multicast MCCH; and to obtain the indication information carried in the system message. and / or The fifth receiving unit is configured to receive a dedicated message from a network device for carrying configuration information of the multicast MCCH, the dedicated message being used to carry the MCCH configuration information; and to obtain the indication information carried in the dedicated message.

28. The receiving device according to claim 27, characterized in that, The first receiving unit includes: The first receiving component is configured to listen to the PDCCH scrambled by G-RNTI, receive paging messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the paging message to indicate the current activation state of the multicast session corresponding to the G-RNTI, and / or indicate whether the multicast service corresponding to the G-RNTI can be received by the user equipment in the RRC or CM inactive state after activation. or The second receiving component is used to listen to the PDCCH scrambled by P-RNTI, receive paging messages according to the scheduling information in the PDCCH, and obtain the indication information carried in the paging message to indicate the current activation state of the multicast session configured by the network device, and / or indicate whether the multicast service corresponding to the G-RNTI can be received by the user equipment in the RRC or CM inactive state after activation.

29. The receiving device according to claim 27, characterized in that, The second receiving unit includes: The first receiving component is configured to listen to the PDCCH scrambled by C-RNTI, receive a proprietary message according to the scheduling information in the PDCCH, and obtain the indication information carried in the proprietary message to indicate the current activation state of the multicast session joined by the user equipment; and / or indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. or The second receiving component is used to listen to the PDCCH scrambled by G-RNTI, receive a dedicated message according to the scheduling information in the PDCCH, and obtain the indication information carried by the dedicated message to indicate the current activation state of the multicast session corresponding to the G-RNTI, and / or indicate whether the multicast service corresponding to the G-RNTI can be received by the user equipment in the RRC or CM inactive state after activation. or The third receiving component is used to listen to the PDCCH scrambled with a specific scrambling code, receive proprietary messages according to the scheduling information in the PDCCH, and obtain the indication information carried by the proprietary messages to indicate the current activation status of all multicast sessions configured by the network device, and / or indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

30. The receiving device according to claim 27, characterized in that, The fourth receiving unit includes: The first receiving component listens to the PDCCH scrambled and scheduled by SI-RNTI, receives the system message according to the scheduling information in the PDCCH, and obtains the indication information carried in the system message to indicate the current activation status of all multicast sessions configured by the network device, and / or to indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

31. The receiving device according to claim 27, characterized in that, The fifth receiving unit includes: The first receiving component is configured to listen to the PDCCH scrambled and scheduled by C-RNTI, receive the dedicated message according to the scheduling information in the PDCCH, and obtain the indication information carried by the dedicated message to indicate the current activation state of the multicast session joined by the user equipment corresponding to the C-RNTI, and / or indicate whether the multicast service joined by the user equipment can be received by the user equipment in the RRC or CM inactive state after activation. or The second receiving component is used to listen to the PDCCH scrambled and scheduled by C-RNTI, receive the dedicated message according to the scheduling information in the PDCCH, and obtain the indication information carried by the dedicated message to indicate the current activation status of all multicast sessions configured by the network device, and / or indicate whether each multicast service configured by the network device can be received by user equipment in the RRC or CM inactive state after activation.

32. A base station comprising a processor and a memory, the memory being configured to store a computer program that, when executed by the processor, causes the processor to implement the method as described in any one of claims 1-10.

33. A terminal comprising a processor and a memory, the memory being configured to store a computer program that, when executed by the processor, causes the processor to implement the method as described in any one of claims 11-20.

34. A computer-readable storage medium comprising a computer program that, when executed by a processor, causes the processor to perform the method as described in any one of claims 1-20.

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