A method and device for sending and receiving paging messages, and a storage medium

Abstract

The present invention discloses a method and device for sending and receiving paging messages, and a storage medium, including: when an MBS service is about to start, the AMF sends a paging message to each base station in the paging area based on the support status of each base station in the paging area for the multicast broadcast feature. After the base station reads the information in the paging message, it pages the UE based on the support status of the base station for the multicast broadcast feature. After the UE reads the information in the paging message based on the support status of the UE for the multicast broadcast feature, it receives the MBS service. By adopting the present invention, it can be ensured that the appropriate method is selected under different base stations to page the UE to inform it that the MBS service is about to start. The technical effect of reducing the additional power consumption of the UE caused by group paging and saving energy is achieved.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a method and device for sending and receiving a paging message, and a storage medium. Background Art

[0002] For a UE (User Equipment) supporting multicast services, if it enters the idle state after joining an MBS (Multicast and Broadcast Service) group through the join process, before the service is about to start, the network will page the UE based on stored information to inform it of the upcoming session start, allowing the UE to re-enter the connected state to receive the service. For nodes that support multicast, the UE will be paged using group paging; for nodes that do not support it, the UE will be paged using normal unicast paging.

[0003] The deficiency of the existing technology is that there is no solution to select a suitable method to page the UE to inform it that the MBS service is about to start. Summary of the Invention

[0004] The present invention provides a paging message sending and receiving method and device, and a storage medium, which are used to solve the problem that there is no solution to select a suitable method to page UE to inform it that MBS service is about to start.

[0005] The present invention provides the following technical solutions:

[0006] A method for sending a paging message, comprising:

[0007] When the MBS service is about to start, the AMF sends a paging message to each base station in the paging area according to the support status of each base station in the paging area for the multicast broadcast feature.

[0008] In implementation, the AMF determines whether the base station supports the multicast broadcast feature when the NG interface is established between the base station and the AMF.

[0009] In implementation, the AMF determines the paging area by one or a combination of the following methods:

[0010] The AMF determines the group paging area and unicast paging area based on the TA list and the member information of the multicast service;

[0011] The AMF determines the group paging area and unicast paging area based on the configuration mode of the TA.

[0012] In implementation, the configuration method of the TA includes one of the following methods:

[0013] All base stations in the TA support MBS, or none of them support MBS; or,

[0014] Base stations that support MBS and base stations that do not support MBS are in the same TA.

[0015] In implementation, when the paging message is sent to the UE by the base station, it is sent via a unicast paging message or a multicast dedicated group paging message.

[0016] During implementation, a paging message is sent to each base station in the paging area based on its support for the multicast broadcast feature, including when there is a base station in the paging area that supports the multicast broadcast feature:

[0017] Send a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information; or,

[0018] A paging message containing the MBS service information about the upcoming session start and the UE ID information corresponding to the MBS service; or

[0019] Send a group paging message containing the MBS service information of the upcoming session start.

[0020] In implementation, MBS service information includes one or a combination of the following information:

[0021] MBS session ID, TMGI, and multicast IP address.

[0022] A method for sending a paging message, comprising:

[0023] The base station receives the paging message sent by the AMF;

[0024] After reading the information in the paging message, the base station pages the UE according to the base station's support for the multicast broadcast feature.

[0025] During implementation, the base station reads the following information from the paging message based on the base station's support for the multicast broadcast feature:

[0026] Upon receiving a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information,

[0027] A base station that supports the multicast broadcast feature selects the group paging message and sends a paging message containing MBS service information in all paging time instants PO, or a base station that does not support the multicast broadcast feature selects the paging message and sends a paging message containing only UE ID information in the PO corresponding to the UE ID;

[0028] or,

[0029] Upon receiving a paging message containing the MBS service information about the upcoming session start and the UE ID information corresponding to the service,

[0030] The base station supporting the multicast broadcast feature sends a paging message containing MBS service information, or containing MBS service information and UE ID information, in the PO corresponding to the UE ID information according to the UE ID information; or

[0031] A base station that does not support the multicast broadcast feature sends a paging message containing only the UE ID information in the PO corresponding to the UE ID information according to the UE ID information;

[0032] or,

[0033] When receiving a group paging message containing MBS service information about an upcoming session start,

[0034] A base station supporting the multicast broadcast feature sends a paging message containing MBS service information in all POs, or after requesting the multicast service group member information from the core network, sends the paging message containing MBS service information only on the member corresponding POs, or sends the paging message containing MBS service information and UE ID information; or,

[0035] A base station that does not support the multicast broadcast feature sends a paging message containing the UE_ID only in the PO corresponding to the UE ID after requesting the corresponding UE ID information from the AMF.

[0036] During implementation, it further includes:

[0037] The base station configures the MBS-specific DRX cycle through a system message.

[0038] In implementation, when the paging message is sent to the UE by the base station, it is sent via a unicast paging message or a multicast dedicated group paging message.

[0039] In implementation, the PO sending the group paging message further includes:

[0040] If sent via unicast paging message, the PO is obtained based on the UE ID; or

[0041] If the PO is sent through an MBS dedicated group paging message, the PO is obtained based on the MBS service information.

[0042] During implementation, it further includes:

[0043] For a group paging message sent via a unicast message, whether it contains MBS group paging information or whether it is a type that contains MBS group paging information is indicated in a short message manner.

[0044] During implementation, it further includes:

[0045] The base station configures, through a system message, a fixed radio frame and subframe position for receiving a group paging message within the MBS-dedicated DRX cycle; or,

[0046] For multicast services configured with the same set of MBS-specific DRX cycle configurations, the base station disperses the time domain locations where the MBS service subscription or interested user groups need to monitor paging in different POs or PFs according to the service identification information of the MBS service.

[0047] During implementation, it further includes:

[0048] Scramble the group paging message by G-RNTI or GP-RNTI; or,

[0049] Group paging messages and unicast paging messages are scrambled using the P-RNTI.

[0050] In implementation, when scrambling the multicast dedicated group paging message and the unicast paging message by using the P-RNTI, the method further includes:

[0051] Configure G-PO or unicast paging PO receiving bias;

[0052] Add group paging message to unicast paging message.

[0053] In implementation, when configuring the G-PO or unicast paging PO reception bias, one or a combination of the following messages is used:

[0054] System messages, RRC dedicated signaling.

[0055] A method for receiving a paging message, comprising:

[0056] The UE receives a paging message sent by the base station;

[0057] The UE receives the MBS service after reading the information in the paging message according to the UE's support for the multicast broadcast feature.

[0058] During implementation, it further includes:

[0059] The UE receives the RNTI for the MBS group paging message allocated by the base station during the registration or join process.

[0060] During implementation, it further includes:

[0061] When the UE is released to the non-connected state after joining, it retains one or a combination of the following MBS contexts: the mapping relationship between different MBS services and G-RNTI, and GP-RNTI.

[0062] During implementation, it further includes:

[0063] When the UE supports MBS, after receiving the paging message at the PO corresponding to the MBS, it reads the UE ID list and MBS service information.

[0064] During implementation, it further includes:

[0065] Determine whether the paging message contains MBS group paging information or is only a paging message according to the indication of the short message mode.

[0066] During implementation, it further includes:

[0067] Descramble the group paging message using the G-RNTI or GP-RNTI; or

[0068] Group paging messages and unicast paging messages are descrambled using the P-RNTI.

[0069] In implementation, when descrambling the group paging message and the unicast paging message through the P-RNTI, the method further includes:

[0070] Receive the G-PO or unicast PO receive bias configured by the base station;

[0071] Receive unicast paging messages with group paging messages added;

[0072] Receive the UE energy saving mode configured by the base station.

[0073] In implementation, when receiving the G-PO or unicast paging PO reception bias configured by the base station, it is configured through one of the following messages or a combination thereof:

[0074] System messages, RRC dedicated signaling.

[0075] In implementation, when receiving a unicast paging message with a group paging message added thereto, the method further includes:

[0076] When the UE supports MBS services, read the IE containing the MBS service identifier to confirm whether there is an MBS service that the UE is interested in / subscribed to, and read the IE containing the UE ID information in the paging message; or

[0077] When the UE does not support the MBS service, the IE containing the UE ID information in the message is read and checked to confirm whether the paging message sent by the network is received.

[0078] In implementation, when receiving the UE energy saving mode configured by the base station, the method further includes:

[0079] When the PO or PF receiving the unicast paging wakes up only after receiving the message broadcast by the base station indicating whether the PO or PF supports the MBS service, the PO or PF receives the unicast paging.

[0080] During implementation, it further includes:

[0081] A fixed radio frame and subframe position for receiving a multicast dedicated group paging message within an MBS dedicated DRX cycle configured by a receiving base station through a system message; or

[0082] The receiving base station configures the same MBS-specific DRX cycle for multiple multicast services. The UE wakes up at the PO or PF corresponding to the MBS service it subscribes to and listens to the group paging message to confirm whether the MBS service is about to start.

[0083] An AMF comprising:

[0084] The processor reads the program from the memory and performs the following steps:

[0085] When the MBS service is about to start, a paging message is sent to each base station in the paging area according to the support status of each base station in the paging area for the multicast broadcast feature;

[0086] A transceiver is used to receive and send data under the control of the processor.

[0087] During implementation, when establishing the NG interface between the base station and the AMF, it is determined whether the base station supports the multicast broadcast feature.

[0088] In implementation, the paging area is determined by one or a combination of the following methods:

[0089] Determine the paging area based on the TA list and the member information of the multicast service;

[0090] The paging area is determined according to the configuration mode of the TA.

[0091] In implementation, the configuration method of the TA includes one of the following methods:

[0092] All base stations in the TA support MBS, or none of them support MBS; or,

[0093] Base stations that support MBS and base stations that do not support MBS are in the same TA.

[0094] In implementation, when the paging message is sent to the UE by the base station, it is sent via a unicast paging message or a multicast dedicated group paging message.

[0095] During implementation, a paging message is sent to each base station in the paging area based on its support for the multicast broadcast feature, including when there is a base station in the paging area that supports the multicast broadcast feature:

[0096] Send a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information; or,

[0097] A paging message containing the MBS service information about the upcoming session start and the UE ID information corresponding to the MBS service; or

[0098] Send a group paging message containing the MBS service information of the upcoming session start.

[0099] In implementation, MBS service information includes one or a combination of the following information:

[0100] MBS session ID, TMGI, and multicast IP address.

[0101] An AMF comprising:

[0102] The AMF paging module is used to send a paging message to each base station in the paging area according to the support status of each base station for the multicast broadcast feature in the paging area when the MBS service is about to start.

[0103] During implementation, the AMF determination module is further used to determine whether the base station supports multicast broadcast features when establishing the NG interface between the base station and the AMF.

[0104] In implementation, the AMF paging module is further configured to determine the paging area by one or a combination of the following methods:

[0105] The AMF determines the group paging area and unicast paging area based on the TA list and the member information of the multicast service;

[0106] The AMF determines the group paging area and unicast paging area based on the configuration mode of the TA.

[0107] In implementation, the AMF paging module is further configured to configure the TA in one of the following ways:

[0108] All base stations in the TA support MBS, or none of them support MBS; or,

[0109] Base stations that support MBS and base stations that do not support MBS are in the same TA.

[0110] In implementation, the AMF paging module is further used to send the paging message to the UE through a unicast paging message or a multicast dedicated group paging message when the paging message is sent to the UE through the base station.

[0111] During implementation, the AMF paging module is further configured to send a paging message to each base station within the paging area based on the support of the multicast broadcast feature by each base station within the paging area, including when there is a base station within the paging area that supports the multicast broadcast feature:

[0112] Send a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information; or,

[0113] A paging message containing the MBS service information about the upcoming session start and the UE ID information corresponding to the MBS service; or

[0114] Send a group paging message containing the MBS service information of the upcoming session start.

[0115] In implementation, the AMF paging module is further configured to send MBS service information including one or a combination of the following information:

[0116] MBS session ID, TMGI, and multicast IP address.

[0117] A base station, comprising:

[0118] The processor reads the program from the memory and performs the following steps:

[0119] Receive paging messages sent by AMF;

[0120] After reading the information in the paging message, the UE is paged based on the base station's support for the multicast broadcast feature;

[0121] A transceiver is used to receive and send data under the control of the processor.

[0122] In implementation, depending on the base station's support for multicast broadcast features, the information read from the paging message includes:

[0123] Upon receiving a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information,

[0124] A base station that supports the multicast broadcast feature selects the group paging message and sends a paging message containing MBS service information in all paging time instants PO, or a base station that does not support the multicast broadcast feature selects the paging message and sends a paging message containing only UE ID information in the PO corresponding to the UE ID;

[0125] or,

[0126] Upon receiving a paging message containing the MBS service information about the upcoming session start and the UE ID information corresponding to the service,

[0127] The base station supporting the multicast broadcast feature sends a paging message containing MBS service information, or containing MBS service information and UE ID information, in the PO corresponding to the UE ID information according to the UE ID information; or

[0128] A base station that does not support the multicast broadcast feature sends a paging message containing only the UE ID information in the PO corresponding to the UE ID information according to the UE ID information;

[0129] or,

[0130] When receiving a group paging message containing MBS service information about an upcoming session start,

[0131] A base station supporting the multicast broadcast feature sends a paging message containing MBS service information in all POs, or after requesting the multicast service group member information from the core network, sends the paging message containing MBS service information only on the member corresponding POs, or sends the paging message containing MBS service information and UE ID information; or,

[0132] A base station that does not support the multicast broadcast feature sends a paging message containing the UE_ID only in the PO corresponding to the UE ID after requesting the corresponding UE ID information from the AMF.

[0133] During implementation, it further includes:

[0134] The MBS-specific DRX cycle is configured through system messages.

[0135] In implementation, when the paging message is sent to the UE by the base station, it is sent via a unicast paging message or a multicast dedicated group paging message.

[0136] In implementation, the PO sending the group paging message further includes:

[0137] If sent via unicast paging message, the PO is obtained based on the UE ID; or

[0138] If the PO is sent through an MBS dedicated group paging message, the PO is obtained based on the MBS service information.

[0139] During implementation, it further includes:

[0140] For a group paging message sent via a unicast message, whether it contains MBS group paging information or whether it is a type that contains MBS group paging information is indicated in a short message manner.

[0141] During implementation, it further includes:

[0142] Configure fixed radio frame and subframe positions for receiving group paging messages within the MBS-dedicated DRX cycle through system messages; or,

[0143] For multicast services configured with the same set of MBS-specific DRX cycle configurations, the time domain locations where MBS service subscriptions or interested user groups need to monitor paging are dispersed in different POs or PFs according to the service identification information of the MBS service.

[0144] During implementation, it further includes:

[0145] Scramble the group paging message by G-RNTI or GP-RNTI; or,

[0146] Group paging messages and unicast paging messages are scrambled using the P-RNTI.

[0147] In implementation, when scrambling the multicast dedicated group paging message and the unicast paging message by using the P-RNTI, the method further includes:

[0148] Configure G-PO or unicast paging PO receiving bias;

[0149] Add group paging message to unicast paging message;

[0150] Configure the UE energy-saving mode.

[0151] In implementation, when configuring the G-PO or unicast paging PO reception bias, one or a combination of the following messages is used:

[0152] System messages, RRC dedicated signaling.

[0153] A base station, comprising:

[0154] The base station receiving module is used to receive the paging message sent by the AMF;

[0155] The base station paging module is used to read the information in the paging message and page the UE according to the base station's support for the multicast broadcast feature.

[0156] During implementation, the base station paging module is further configured to read information in the paging message including:

[0157] Upon receiving a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information,

[0158] A base station that supports the multicast broadcast feature selects the group paging message and sends a paging message containing MBS service information in all paging time instants PO, or a base station that does not support the multicast broadcast feature selects the paging message and sends a paging message containing only UE ID information in the PO corresponding to the UE ID;

[0159] or,

[0160] Upon receiving a paging message containing the MBS service information about the upcoming session start and the UE ID information corresponding to the service,

[0161] The base station supporting the multicast broadcast feature sends a paging message containing MBS service information, or containing MBS service information and UE ID information, in the PO corresponding to the UE ID information according to the UE ID information; or

[0162] A base station that does not support the multicast broadcast feature sends a paging message containing only the UE ID information in the PO corresponding to the UE ID information according to the UE ID information;

[0163] or,

[0164] When receiving a group paging message containing MBS service information about an upcoming session start,

[0165] A base station supporting the multicast broadcast feature sends a paging message containing MBS service information in all POs, or after requesting the multicast service group member information from the core network, sends the paging message containing MBS service information only on the member corresponding POs, or sends the paging message containing MBS service information and UE ID information; or,

[0166] A base station that does not support the multicast broadcast feature sends a paging message containing the UE_ID only in the PO corresponding to the UE ID after requesting the corresponding UE ID information from the AMF.

[0167] During implementation, the base station paging module is further configured to configure the MBS-specific DRX cycle through a system message.

[0168] In implementation, the base station paging module is further configured to send the paging message to the UE via a unicast paging message or a multicast dedicated group paging message.

[0169] During implementation, the base station paging module is further used to send a group paging message at PO. If it is sent via a unicast paging message, the PO is a PO obtained based on the UE ID; or, if it is sent via an MBS dedicated group paging message, the PO is a PO obtained based on the MBS service information.

[0170] In implementation, the base station paging module is further configured to indicate, in a shortmessage manner, whether the group paging message sent via a unicast message contains MBS group paging information or whether it is a type containing MBS group paging information.

[0171] During implementation, the base station paging module is further used to configure fixed radio frames and subframe positions for receiving group paging messages within the MBS dedicated DRX cycle through system messages; or, for multicast services configured with the same set of MBS dedicated DRX cycle configurations, the time domain positions where the MBS service subscription or interested user groups need to monitor paging are dispersed in different POs or PFs according to the service identification information of the MBS service.

[0172] During implementation, the base station paging module is further configured to scramble the group paging message using the G-RNTI or GP-RNTI; or, scramble the group paging message and the unicast paging message using the P-RNTI.

[0173] During implementation, the base station paging module is further used to configure G-PO or unicast paging PO receiving bias when scrambling multicast dedicated group paging messages and unicast paging messages through P-RNTI; add group paging messages to unicast paging messages; and configure UE energy saving mode.

[0174] In implementation, the base station paging module is further configured to configure the G-PO or unicast paging PO reception bias through one of the following messages or a combination thereof:

[0175] System messages, RRC dedicated signaling.

[0176] A UE, including:

[0177] The processor reads the program from the memory and performs the following steps:

[0178] Receiving a paging message sent by a base station;

[0179] Based on the UE's support for the multicast broadcast feature, the UE reads the information in the paging message and receives the MBS service.

[0180] A transceiver is used to receive and send data under the control of the processor.

[0181] During implementation, it further includes:

[0182] Receive the RNTI for the MBS group paging message allocated by the base station during the registration or join process.

[0183] During implementation, it further includes:

[0184] When releasing to the unconnected state after joining, one or a combination of the following MBS contexts is retained: the mapping relationship between different MBS services and G-RNTI, and GP-RNTI.

[0185] During implementation, it further includes:

[0186] When MBS is supported, after receiving the paging message at the PO corresponding to the MBS, the UE ID list and MBS service information are read.

[0187] During implementation, it further includes:

[0188] Determine whether the paging message contains MBS group paging information or is only a paging message according to the indication of the short message mode.

[0189] During implementation, it further includes:

[0190] Descramble the group paging message using the G-RNTI or GP-RNTI; or

[0191] Group paging messages and unicast paging messages are descrambled using the P-RNTI.

[0192] In implementation, when descrambling the group paging message and the unicast paging message through the P-RNTI, the method further includes:

[0193] Receive the G-PO or unicast PO receive bias configured by the base station;

[0194] Receive unicast paging messages with group paging messages added;

[0195] Receive the UE energy saving mode configured by the base station.

[0196] In implementation, when receiving the G-PO or unicast paging PO reception bias configured by the base station, it is configured through one of the following messages or a combination thereof:

[0197] System messages, RRC dedicated signaling.

[0198] In implementation, when receiving a unicast paging message with a group paging message added thereto, the method further includes:

[0199] When the UE supports MBS services, read the IE containing the MBS service identifier to confirm whether there is an MBS service that the UE is interested in / subscribed to, and read the IE containing the UE ID information in the paging message; or

[0200] When the UE does not support the MBS service, the IE containing the UE ID information in the message is read and checked to confirm whether the paging message sent by the network is received.

[0201] In implementation, when receiving the UE energy saving mode configured by the base station, the method further includes:

[0202] When the PO or PF receiving the unicast paging wakes up only after receiving the message broadcast by the base station indicating whether the PO or PF supports the MBS service, the PO or PF receives the unicast paging.

[0203] During implementation, it further includes:

[0204] A fixed radio frame and subframe position for receiving a multicast dedicated group paging message within an MBS dedicated DRX cycle configured by a receiving base station through a system message; or

[0205] The receiving base station configures the same MBS-specific DRX cycle for multiple multicast services. The UE wakes up at the PO or PF corresponding to the MBS service it subscribes to and listens to the group paging message to confirm whether the MBS service is about to start.

[0206] A UE, including:

[0207] UE paging module, used to receive paging messages sent by the base station;

[0208] The UE receiving module is used to receive the MBS service after reading the information in the paging message according to the UE's support for the multicast broadcast feature.

[0209] In implementation, the UE receiving module is further configured to receive an RNTI for an MBS group paging message allocated by the base station during a registration or join process.

[0210] In implementation, the UE receiving module is further configured to retain one or a combination of the following MBS contexts when releasing to a non-connected state after joining: a mapping relationship between different MBS services and G-RNTI, and a GP-RNTI.

[0211] In implementation, the UE receiving module is further used for reading the UE ID list and MBS service information when the UE supports MBS and receives a paging message at the PO corresponding to the MBS.

[0212] In implementation, the UE receiving module is further configured to determine, according to an indication of the short message mode, whether the paging message includes MBS group paging information or is only a paging message.

[0213] In implementation, the UE receiving module is further configured to descramble the group paging message using the G-RNTI or GP-RNTI; or descramble the group paging message and the unicast paging message using the P-RNTI.

[0214] During implementation, the UE receiving module is further used to receive the G-PO or unicast paging PO receiving bias configured by the base station when de-interfering the group paging message and unicast paging message through P-RNTI; receive the unicast paging message with the group paging message added; and receive the UE energy saving mode configured by the base station.

[0215] In implementation, the UE receiving module is further configured to receive the G-PO or unicast paging PO reception bias configured by the base station through one of the following messages or a combination thereof:

[0216] System messages, RRC dedicated signaling.

[0217] During implementation, the UE receiving module is further configured to, when receiving a unicast paging message with a group paging message added thereto, read an IE containing an MBS service identifier when the UE supports MBS services, to confirm whether there is an MBS service that the UE is interested in / subscribed to, and read and check the IE containing UE ID information in the paging message; or, when the UE does not support MBS services, read and check the IE containing UE ID information in the message, to confirm whether the paging message sent by the network is received.

[0218] During implementation, the UE receiving module is further configured to receive unicast paging only when the PO or PF of the unicast paging wakes up when the UE energy saving mode configured by the base station is received and no message broadcast by the base station indicating whether it supports the MBS service is received.

[0219] In implementation, the UE receiving module is further configured to receive a fixed radio frame and subframe position for receiving a multicast dedicated group paging message within an MBS dedicated DRX cycle configured by the base station through a system message; or,

[0220] The receiving base station configures the same MBS-specific DRX cycle for multiple multicast services. The UE wakes up at the PO or PF corresponding to the MBS service it subscribes to and listens to the group paging message to confirm whether the MBS service is about to start.

[0221] A computer-readable storage medium storing a computer program for executing the above-mentioned AMF side paging message sending method, base station side paging message sending method, or UE side paging message receiving method.

[0222] The beneficial effects of the present invention are as follows:

[0223] In the technical solution provided by the embodiment of the present invention, when the MBS service is about to start, the AMF will send a paging message to each base station in the paging area according to the support status of each base station in the paging area for the multicast broadcast feature; after the base station reads the information in the paging message, it can page the UE according to the support status of the base station for the multicast broadcast feature; the UE receives the MBS service after reading the information in the paging message according to the support status of the UE for the multicast broadcast feature. Since the solution combines paging with the support status of the multicast broadcast feature, it can ensure that the appropriate method is selected under different base stations to page the UE to inform it that the MBS service is about to start.

[0224] Furthermore, the solution also provides information on how the AMF sends a paging message to the base station to determine the area for group paging, as well as how to calculate the PO or PF in group paging. This allows the user to choose the appropriate method to page the UE in different base stations to inform them that the MBS service is about to start.

[0225] Furthermore, a method for receiving paging messages in combination with support for multicast broadcast features is provided to reduce the impact on UEs, thereby achieving the technical effect of reducing the additional power consumption of UEs caused by group paging and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0226] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0227] Figure 1 Schematic diagram of the implementation flow of the paging message sending method on the AMF side in an embodiment of the present invention;

[0228] Figure 2 Schematic diagram of the implementation flow of the method for sending a paging message on the base station side in an embodiment of the present invention;

[0229] Figure 3 Schematic diagram of the implementation flow of the paging message receiving method on the UE side in an embodiment of the present invention;

[0230] Figure 4 AMF structure diagram in an embodiment of the present invention;

[0231] Figure 5 This is a schematic diagram of the base station structure in an embodiment of the present invention;

[0232] Figure 6 Schematic diagram of the UE structure in an embodiment of the present invention. DETAILED DESCRIPTION

[0233] During the course of the invention, the inventors noticed that:

[0234] There is no solution to select an appropriate method to page the UE to inform it that the MBS service is about to start. There is at least one of the following specific problems:

[0235] In existing technologies, paging of idle UEs is triggered by the core network, and whether to use group paging is also determined by the Access and Mobility Management Function (AMF). Therefore, the existing technologies have problems in selecting the appropriate AMF, determining the area for group paging, and paging UEs for nodes within the area that do not support multicast.

[0236] In addition, when a UE receives a paging signal, it needs to calculate the PO (Paging Occasion) / PF (Paging Frame) based on its DRX (Discontinuous Reception) configuration. Calculating the PO or PF in group paging also requires a solution.

[0237] At the same time, considering the energy saving requirements of UE, how to reduce the additional power consumption caused by false alarms caused by group paging to UE is also an urgent problem to be solved.

[0238] Based on this, an embodiment of the present invention provides a solution for sending and receiving a paging message. The specific implementation of the present invention will be described below with reference to the accompanying drawings.

[0239] During the description, the implementation on the AMF side, the base station side, and the UE side will be explained respectively, and then an example of their coordinated implementation will be given to better understand the implementation of the solution provided in the embodiment of the present invention. This description does not mean that they must be implemented in coordination or separately. In fact, when they are implemented separately, they each solve the problems on their own side, and when they are used in combination, better technical effects will be achieved.

[0240] Figure 1 The following is a flowchart of a method for sending a paging message on the AMF side, as shown in the figure:

[0241] Step 101: When the MBS service is about to start, the AMF sends a paging message to each base station in the paging area according to the support status of each base station for the multicast broadcast feature in the paging area.

[0242] Figure 2The flowchart of the method for sending a paging message on the base station side is shown in the figure, which may include:

[0243] Step 201: The base station receives a paging message sent by the AMF.

[0244] Step 202: After reading the information in the paging message, the base station pages the UE according to the base station's support for the multicast broadcast feature.

[0245] Figure 3 A flowchart illustrating a method for receiving a paging message on a UE side is provided, as shown in the figure, which may include:

[0246] Step 301: The UE receives a paging message sent by the base station;

[0247] Step 302: The UE receives the MBS service after reading the information in the paging message according to the UE's support for the multicast broadcast feature.

[0248] In implementation, the AMF determines whether the base station supports the multicast broadcast feature when the NG interface is established between the base station and the AMF.

[0249] The following mainly describes the implementation of NG interface establishment / AMF selection by 5G base station gNB.

[0250] When establishing the NG interface between the gNB and the AMF, the gNB and the AMF may interact with each other to determine whether they support the multicast broadcast feature. For a gNB that supports multicast broadcast, the AFM that supports multicast broadcast shall be given priority to establish the NG interface in order to support the multicast broadcast feature.

[0251] In implementation, the configuration method of the TA includes one of the following methods:

[0252] All base stations in the TA support MBS, or none of them support MBS; or,

[0253] Base stations that support MBS and base stations that do not support MBS are in the same TA.

[0254] Based on the information exchanged by the gNB regarding whether multicast broadcast is supported, the AMF can configure two types of TA (Tracking Area) configurations:

[0255] Method 1: The existing TA configuration is used. Each TA may contain cells / gNBs that support MBS and cells / gNBs that do not support MBS. An identifier can be added to identify only cells that do not support or support MBS, or both.

[0256] Method 2: MBS-dedicated TA configuration. This configuration includes two types of TA areas: one that only includes cells / gNBs that support MBS, and the other that only includes cells / gNBs that do not support MBS.

[0257] The following describes the implementation of AMF triggering paging to notify the UE of the upcoming session start.

[0258] In implementation, the AMF determines the paging area by one or a combination of the following methods:

[0259] The AMF determines the group paging area and the existing unicast paging area based on the TA list and the group member information of the multicast service;

[0260] The AMF determines the group paging area and unicast paging area based on the configuration mode of the TA.

[0261] Specifically, the AMF will determine the area where group paging needs to be sent based on the TA list (table) in the prior art and the group member information of the multicast service, such as taking the union of the TA lists of multiple UEs;

[0262] Alternatively, according to the first different TA configuration method described above, the resulting group paging area may include: a group paging area where all cells support MBS, MBS-dedicated TAs, and TAs with an MBS-supported indicator. The AMF sends a group paging message to the gNB, and this paging message only includes MBS service information (such as the TMGI (Temporary Mobile Group Identity) and the multicast address) for the upcoming session start; a group paging area where some cells support MBS, where only some TAs are MBS-dedicated and TAs with an MBS-supported indicator. Furthermore, a non-group paging area may be obtained, i.e., a regular TA and a TA with an MBS-unsupported indicator.

[0263] For non-group paging areas, AMF triggers unicast paging, which is a traditional paging message that mainly contains UE ID information.

[0264] For group paging areas where all cells support MBS, i.e., those containing MBS-dedicated TAs and TAs with MBS support indication, the AMF sends a group paging message to the gNB. This paging message only contains the MBS service information (e.g., TMGI, multicast address) for the upcoming session start, and optionally, the UE ID information.

[0265] In implementation, when the paging message is sent to the UE by the base station, it is sent via a unicast paging message or a multicast dedicated group paging message.

[0266] In implementation, the paging message is sent via a unicast paging message or a separate paging message.

[0267] In specific implementation, on the AMF side, paging messages are sent to each base station in the paging area based on the support of the multicast broadcast feature by each base station, including when there is a base station supporting the multicast broadcast feature in the paging area:

[0268] Method A: Send a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information; or

[0269] Method B: a paging message containing the MBS service information about the upcoming session start and the UEID information corresponding to the MBS service; or

[0270] Method C: Send a group paging message containing the MBS service information of the upcoming session start.

[0271] On the base station side, the base station reads the following information from the paging message based on its support for the multicast broadcast feature:

[0272] Method A: Upon receiving a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information,

[0273] A base station that supports the multicast broadcast feature selects the group paging message and sends a paging message containing MBS service information in all paging time instants PO, or a base station that does not support the multicast broadcast feature selects the paging message and sends a paging message containing only UE ID information in the PO corresponding to the UE ID;

[0274] or,

[0275] Method B: When receiving a paging message containing the MBS service information of the upcoming session start and the UE ID information corresponding to the service,

[0276] The base station supporting the multicast broadcast feature sends a paging message containing MBS service information, or containing MBS service information and UE ID information, in the PO corresponding to the UE ID information according to the UE ID information; or

[0277] A base station that does not support the multicast broadcast feature sends a paging message containing only the UE ID information in the PO corresponding to the UE ID information according to the UE ID information;

[0278] or,

[0279] Method C: When receiving a group paging message containing MBS service information about an upcoming session start,

[0280] A base station supporting the multicast broadcast feature sends a paging message containing MBS service information in all POs, or after requesting the multicast service group member information from the core network, sends the paging message containing MBS service information only on the member corresponding POs, or sends the paging message containing MBS service information and UE ID information; or,

[0281] A base station that does not support the multicast broadcast feature sends a paging message containing the UE_ID only in the PO corresponding to the UE ID after requesting the corresponding UE ID information from the AMF.

[0282] In a specific implementation, the MBS service information includes one or a combination of the following information:

[0283] MBS session ID, TMGI, and multicast IP address.

[0284] Specifically, for the case where some cells support MBS, the possible paging sending methods are as follows:

[0285] 1) Group paging information is sent via the existing unicast paging message.

[0286] Method A: For all base stations / cells in the same group paging area, the AMF sends two sets of paging messages, one of which contains only the MBS service information (such as TMGI, multicast broadcast address) for the upcoming session start, and the other set of paging messages is a traditional paging message, that is, it only contains UE ID information.

[0287] For multiple base stations within the group paging area, a set of paging messages is selected to be sent on the RAN (Radio Access Network) side based on whether they support the multicast broadcast feature. That is, base stations that support the multicast broadcast feature select group paging messages, and all POs include MBS service information; base stations that do not support the multicast broadcast feature select legacy paging messages, that is, the UE ID is included in the corresponding PO;

[0288] Method B: For all base stations / cells in the same group paging area, the AMF sends the same complete set of information, including the MBS service information (such as TMGI, multicast broadcast address) and UE ID information of the upcoming session start.

[0289] For multiple base stations under this group paging area, a set of paging messages is selected to be sent on the RAN side based on whether they support the multicast broadcast feature. That is, the base station that supports the multicast broadcast feature selects the group paging message, and only the PO corresponding to the ID in the UE ID list includes MBS service information; for the base station that does not support the multicast broadcast feature, the legacy paging message is selected, that is, the UE ID is included in the corresponding PO.

[0290] Method C: For all base stations / cells in the same group paging area, the AMF only sends a group paging message, that is, the message sent by the AMF only contains the MBS service information (such as TMGI, multicast broadcast address) where the session start will occur.

[0291] For base stations that support multicast broadcast features, group paging messages are selected, and MBS service information is included in all POs; for base stations that do not support multicast broadcast features, it is necessary to interact with the AMF, request the corresponding ID information, and send legacy paging messages including UE ID in the corresponding PO.

[0292] Because MBS-related group paging messages are included in legacy paging messages, they may cause additional power consumption for UEs that are not interested in the upcoming service or that do not support or subscribe to MBS services. Therefore, it is possible to consider indicating whether MBS group paging information is included through a short message, and possibly indicating specific service information or service group information. In other words, in implementation, the base station side may further include: for a group paging message sent via an existing unicast message, indicating to the UE via a short message whether the paging message contains MBS group paging information or is only an existing paging message. Correspondingly, the UE side determines whether the paging message contains MBS group paging information or is only a paging message based on the indication in the short message.

[0293] In this case, when a UE supporting MBS receives a paging message at its corresponding PO, the UE needs to read not only the UE ID list but also the MBS service information, not just a portion thereof. That is, the implementation may further include: when a UE supporting MBS receives a paging message at its corresponding PO, the UE reads the UE ID list and MBS service information.

[0294] Specifically, the base station selects corresponding content and sends it to the UE based on the received information and whether it supports multicast broadcast.

[0295] The message is sent based on the base station's support for multicast broadcast. It is not sent to a specific base station alone, but to determine whether the area contains only nodes that do not support MBS, because only the same set of messages can be sent to all base stations in a paging area.

[0296] If all nodes in the paging area do not support MBS, only the paging message can be sent; as long as there is a node in the paging area that supports MBS, one of the three methods can be used to send the message.

[0297] 2) A group paging message is a separate paging message.

[0298] Similar to the way group paging information is sent through the existing unicast paging message, AMF can select one of methods A, B, and C to send the group paging message to all base stations under the paging area. The message is sent at the separate G-PO (group PO) / G-PF (group PF) position of the group paging. The message does not contain UE information, but only contains the identification information of the multicast service to be started, such as MBS session ID (MBS session identification), TMGI, etc.

[0299] During implementation, the network may additionally allocate an RNTI (Radio Network Temporary Identifier) ​​for MBS group paging to the UE, which is identified by GP-RNTI (Group Paging RNTI) in the embodiment and allocated to the UE during the UE registration or join process.

[0300] When the UE is released to the non-connected state after joining, the UE retains some MBS contexts, including but not limited to: the mapping between different MBS services and G-RNTI (Group-Radio Network Temporary Identity) (the mapping relationship between MBS session and G-RNTI), GP-RNTI, etc.

[0301] That is, during implementation, the following may be further included:

[0302] The UE receives the RNTI for the MBS group paging message allocated by the base station during the registration or join process.

[0303] It further includes: when the UE is released to the non-connected state after joining, retaining one or a combination of the following MBS contexts: the mapping relationship between different MBS services and G-RNTI, and GP-RNTI.

[0304] The following describes the configuration and calculation of G-PO / G-PF corresponding to group paging.

[0305] During implementation, the following may be further included:

[0306] The base station configures the MBS-specific DRX cycle through a system message.

[0307] Specifically, the network configures the MBS-specific DRX cycle (which may be the same as the default unicast paging cycle for the cell) through system messages (such as SIB 1 (System Information Block 1), and the network may configure more than one set of DRX configurations based on the latency requirements of the service.

[0308] During implementation, on the base station side, the following steps may be further included:

[0309] Method 1: The base station configures fixed radio frame and subframe positions for receiving group paging messages within the MBS-dedicated DRX cycle through system messages; or

[0310] Method 2: For multicast services configured with the same MBS-specific DRX cycle configuration, the base station disperses the time domain locations where the MBS service subscription or interested user group needs to monitor paging in different POs or PFs according to the service identification information of the MBS service.

[0311] Accordingly, on the UE side, the following may be further included:

[0312] Method 1: receiving a fixed radio frame and subframe position for receiving a multicast dedicated group paging message within an MBS dedicated DRX cycle configured by the base station through a system message; or

[0313] Method 2: The receiving base station configures the same MBS-specific DRX cycle for multiple multicast services. The UE wakes up at the PO or PF corresponding to the MBS service it subscribes to and listens to the group paging message to confirm whether the MBS service is about to start.

[0314] Specifically, for the PO / PF receiving the paging message, the specific method may be:

[0315] Method 1: The network configures fixed radio frame and subframe positions within the period for receiving group paging messages through system information (such as SIB 1).

[0316] Method 2: For multicast services with the same DRX configuration, they are distributed in different POs / PFs according to their service identification information. That is, UEs subscribing to a multicast service all wake up at the PO / PF corresponding to the service to listen to group paging to confirm whether the service is about to start. The details are as follows:

[0317] G-PF(SFN) calculation:

[0318] (SFN + PF_offset_multicast) mod T' = (T' div N) * (Multicast_ID mod N)

[0319] G-PO(Index(i_s)) calculation:

[0320] i_s=floor(Multicast_ID / N)mod Ns [i_s=round down(Multicast ID / N)] where:

[0321] T' = Multicast DRX cycle (network configuration, possibly related to service latency requirements);

[0322] N: total number of paging frames in one MBS DRX cycle;

[0323] Ns: the number of G-POs in a G-PF;

[0324] PF_offset_multicast: used to determine the PF offset;

[0325] Multicast_ID: (TMGI, G-RNTI, MBS session ID, multicast IP address, or other fixed ID) mod 1024.

[0326] SFN stands for System Frame Number.

[0327] At this time, the PDCCH (Physical downlink control channel) used to indicate Group paging may be scrambled by P-RNTI (Paging-Radio Network Temporary Identity) or G-RNTI (Group-Radio Network Temporary Identity) / GP-RNTI.

[0328] The following describes the implementation of conflict resolution between G-PO and legacy PO.

[0329] During implementation, on the base station side, the following steps may be further included:

[0330] Scramble the group paging message by G-RNTI or GP-RNTI; or,

[0331] Group paging messages and unicast paging messages are scrambled using the P-RNTI.

[0332] Accordingly, on the UE side, the following may be further included:

[0333] Descramble the group paging message using the G-RNTI or GP-RNTI; or

[0334] Group paging messages and unicast paging messages are descrambled using the P-RNTI.

[0335] Inevitably, the G-PO may completely or partially conflict with the legacy PO location, resulting in some UEs being unable to receive both multicast group paging and unicast paging. This can be resolved as follows:

[0336] 1) Group paging is scrambled using G-RNTI or GP-RNTI, allowing the UE to receive both group and unicast paging.

[0337] 2) Group paging and unicast paging are both scrambled using P-RNTI:

[0338] In implementation, on the base station side, when scrambling the multicast dedicated group paging message and the unicast paging message by using the P-RNTI, further comprising:

[0339] Configure G-PO or unicast paging PO receiving bias;

[0340] Add group paging message to unicast paging message;

[0341] Configure the UE energy-saving mode.

[0342] Correspondingly, on the UE side, when descrambling the group paging message and the unicast paging message through the P-RNTI, further includes:

[0343] Receive the G-PO or unicast paging PO receiving bias configured by the base station;

[0344] receiving a unicast paging message with a group paging message added;

[0345] Receive the UE energy saving mode configured by the base station.

[0346] A. Configure the G-PO or existing unicast paging PO receive bias;

[0347] The network may configure a G-PO or unicast PO receiving offset (or offset window), that is, the network may retransmit the G-PO or unicast PO at the offset (window) position.

[0348] The bias can be configured through system messages, such as included in the G-PO or legacy unicast paging configuration in SIB1, or configured only for some UEs through RRC (Radio Resource Control) dedicated signaling, or both can be used at the same time. If there is an RRC configuration, the RRC configuration can prevail. When a conflict occurs, the UE receives the group paging message or unicast paging message at the offset (window) position according to the configuration. That is, in implementation, when configuring the G-PO or unicast paging PO reception bias, it is configured through one of the following messages or a combination thereof: system message, RRC dedicated signaling.

[0349] B. Adding group paging messages to existing unicast paging messages;

[0350] In implementation, on the UE side,

[0351] When receiving a unicast paging message with a group paging message added thereto, the method further includes:

[0352] When the UE supports MBS services, read the IE containing the MBS service identifier to confirm whether there is an MBS service that the UE is interested in / subscribed to, and read the IE containing the UE ID information in the paging message; or

[0353] When the UE does not support the MBS service, the IE containing the UE ID information in the message is read and checked to confirm whether the paging message sent by the network is received.

[0354] Specifically, the gNB will add a group paging message to the unicast paging. For UEs that receive this paging message, if they support MBS services, in addition to checking the UE list, they will also read the MBS service identification part to confirm whether MBS services are available. If they do not support MBS services, they will only check the UE list to confirm whether the traditional paging sent by the network has been received.

[0355] C. Configure UE energy-saving mode.

[0356] During implementation, on the UE side, when receiving the UE energy saving mode configured by the base station, the following steps may be further included:

[0357] When the base station does not receive the message broadcast by the base station indicating whether the base station supports the MBS service, the PO or PF only wakes up to receive the unicast paging.

[0358] Specifically, when the base station does not broadcast whether it supports the MBS service, it does not wake up at the multicast dedicated PO or PF time to receive the multicast dedicated group paging message, and only wakes up at the existing unicast paging PO or PF time to receive the unicast paging.

[0359] Since the multicast-specific PO / PF can only be used for multicast group paging reception in cells that support multicast, the cell can broadcast whether it supports multicast through system messages and can specifically broadcast information about the specific services supported. When the network does not broadcast this information, the UE assumes that the cell does not support multicast. Therefore, there is no need to wake up at the dedicated PO / PF to receive multicast, and it can only wake up at the PO / PF of unicast paging to receive unicast paging.

[0360] Based on the same inventive concept, an AMF, a base station, a user device, and a computer storage medium are also provided in an embodiment of the present invention. Since the principles of solving the problems of these devices are similar to those of the paging message sending method and the paging message receiving method, the implementation of these devices can refer to the implementation of the method, and the repeated parts will not be repeated.

[0361] When implementing the technical solution provided by the embodiment of the present invention, it can be implemented as follows.

[0362] Figure 4 The following is a schematic diagram of the AMF structure. As shown in the figure, AMF includes:

[0363] The processor 400 is configured to read the program in the memory 420 and execute the following process:

[0364] When the MBS service is about to start, a paging message is sent to each base station in the paging area according to the support status of each base station in the paging area for the multicast broadcast feature;

[0365] The transceiver 410 is configured to receive and send data under the control of the processor 400 .

[0366] During implementation, when establishing the NG interface between the base station and the AMF, it is determined whether the base station supports the multicast broadcast feature.

[0367] In implementation, the paging area is determined by one or a combination of the following methods:

[0368] Determine the paging area based on the TA list and the member information of the multicast service;

[0369] The paging area is determined according to the configuration mode of the TA.

[0370] In implementation, the configuration method of the TA includes one of the following methods:

[0371] All base stations in the TA support MBS, or none of them support MBS; or,

[0372] Base stations that support MBS and base stations that do not support MBS are in the same TA.

[0373] In implementation, when the paging message is sent to the UE by the base station, it is sent via a unicast paging message or a multicast dedicated group paging message.

[0374] During implementation, a paging message is sent to each base station in the paging area based on its support for the multicast broadcast feature, including when there is a base station in the paging area that supports the multicast broadcast feature:

[0375] Send a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information; or,

[0376] A paging message containing the MBS service information about the upcoming session start and the UE ID information corresponding to the MBS service; or

[0377] Send a group paging message containing the MBS service information of the upcoming session start.

[0378] In implementation, MBS service information includes one or a combination of the following information:

[0379] MBS session ID, TMGI, and multicast IP address.

[0380] Among them, Figure 4 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 400 and memory represented by memory 420. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 410 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 when performing operations.

[0381] An embodiment of the present invention further provides an AMF, including:

[0382] The AMF paging module is used to send a paging message to each base station in the paging area according to the support status of each base station for the multicast broadcast feature in the paging area when the MBS service is about to start.

[0383] During implementation, the AMF determination module is further used to determine whether the base station supports multicast broadcast features when establishing the NG interface between the base station and the AMF.

[0384] In implementation, the AMF paging module is further configured to determine the paging area by one or a combination of the following methods:

[0385] The AMF determines the group paging area and unicast paging area based on the TA list and the member information of the multicast service;

[0386] The AMF determines the group paging area and unicast paging area based on the configuration mode of the TA.

[0387] In implementation, the AMF paging module is further configured to configure the TA in one of the following ways:

[0388] All base stations in the TA support MBS, or none of them support MBS; or,

[0389] Base stations that support MBS and base stations that do not support MBS are in the same TA.

[0390] In implementation, the AMF paging module is further used to send the paging message to the UE through a unicast paging message or a multicast dedicated group paging message when the paging message is sent to the UE through the base station.

[0391] During implementation, the AMF paging module is further configured to send a paging message to each base station within the paging area based on the support of the multicast broadcast feature by each base station within the paging area, including when there is a base station within the paging area that supports the multicast broadcast feature:

[0392] Send a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information; or,

[0393] A paging message containing the MBS service information about the upcoming session start and the UE ID information corresponding to the MBS service; or

[0394] Send a group paging message containing the MBS service information of the upcoming session start.

[0395] In implementation, the AMF paging module is further configured to send MBS service information including one or a combination of the following information:

[0396] MBS session ID, TMGI, and multicast IP address.

[0397] For the convenience of description, the various parts of the above-mentioned device are divided into various modules or units according to their functions and described separately. Of course, when implementing the present invention, the functions of each module or unit can be realized in the same or multiple software or hardware.

[0398] Figure 5 The following is a schematic diagram of the base station structure. As shown in the figure, the base station includes:

[0399] The processor 500 is configured to read the program in the memory 520 and execute the following process:

[0400] Receive paging messages sent by AMF;

[0401] After reading the information in the paging message, the UE is paged based on the base station's support for the multicast broadcast feature;

[0402] The transceiver 510 is configured to receive and send data under the control of the processor 500 .

[0403] In implementation, depending on the base station's support for multicast broadcast features, the information read from the paging message includes:

[0404] Upon receiving a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information,

[0405] A base station that supports the multicast broadcast feature selects the group paging message and sends a paging message containing MBS service information in all paging time instants PO, or a base station that does not support the multicast broadcast feature selects the paging message and sends a paging message containing only UE ID information in the PO corresponding to the UE ID;

[0406] or,

[0407] Upon receiving a paging message containing the MBS service information about the upcoming session start and the UE ID information corresponding to the service,

[0408] The base station supporting the multicast broadcast feature sends a paging message containing MBS service information, or containing MBS service information and UE ID information, in the PO corresponding to the UE ID information according to the UE ID information; or

[0409] A base station that does not support the multicast broadcast feature sends a paging message containing only the UE ID information in the PO corresponding to the UE ID information according to the UE ID information;

[0410] or,

[0411] When receiving a group paging message containing MBS service information about an upcoming session start,

[0412] A base station supporting the multicast broadcast feature sends a paging message containing MBS service information in all POs, or after requesting the multicast service group member information from the core network, sends the paging message containing MBS service information only on the member corresponding POs, or sends the paging message containing MBS service information and UE ID information; or,

[0413] A base station that does not support the multicast broadcast feature sends a paging message containing the UE_ID only in the PO corresponding to the UE ID after requesting the corresponding UE ID information from the AMF.

[0414] During implementation, it further includes:

[0415] The MBS-specific DRX cycle is configured through system messages.

[0416] In implementation, when the paging message is sent to the UE by the base station, it is sent via a unicast paging message or a multicast dedicated group paging message.

[0417] In implementation, the base station sends a PO of a group paging message further including:

[0418] If sent via unicast paging message, the PO is obtained based on the UE ID; or

[0419] If the PO is sent through an MBS dedicated group paging message, the PO is obtained based on the MBS service information.

[0420] During implementation, it further includes:

[0421] For a group paging message sent via a unicast message, whether it contains MBS group paging information or whether it is a type that contains MBS group paging information is indicated in a short message manner.

[0422] During implementation, it further includes:

[0423] Configure fixed radio frame and subframe positions for receiving group paging messages within the MBS-dedicated DRX cycle through system messages; or,

[0424] For multicast services configured with the same set of MBS-specific DRX cycle configurations, the time domain locations where MBS service subscriptions or interested user groups need to monitor paging are dispersed in different POs or PFs according to the service identification information of the MBS service.

[0425] During implementation, it further includes:

[0426] Scramble the group paging message by G-RNTI or GP-RNTI; or,

[0427] Group paging messages and unicast paging messages are scrambled using the P-RNTI.

[0428] In implementation, when scrambling the multicast dedicated group paging message and the unicast paging message by using the P-RNTI, the method further includes:

[0429] Configure G-PO or unicast paging PO receiving bias;

[0430] Add group paging message to unicast paging message;

[0431] Configure the UE energy-saving mode.

[0432] In implementation, when configuring the G-PO or unicast paging PO reception bias, one or a combination of the following messages is used:

[0433] System messages, RRC dedicated signaling.

[0434] Among them, Figure 5 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 500 and memory represented by memory 520. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 510 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 when performing operations.

[0435] An embodiment of the present invention further provides a base station, including:

[0436] The base station receiving module is used to receive the paging message sent by the AMF;

[0437] The base station paging module is used to read the information in the paging message and page the UE according to the base station's support for the multicast broadcast feature.

[0438] During implementation, the base station paging module is further configured to read information in the paging message including:

[0439] Upon receiving a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information,

[0440] A base station that supports the multicast broadcast feature selects the group paging message and sends a paging message containing MBS service information in all paging time instants PO, or a base station that does not support the multicast broadcast feature selects the paging message and sends a paging message containing only UE ID information in the PO corresponding to the UE ID;

[0441] or,

[0442] Upon receiving a paging message containing the MBS service information about the upcoming session start and the UE ID information corresponding to the service,

[0443] The base station supporting the multicast broadcast feature sends a paging message containing MBS service information, or containing MBS service information and UE ID information, in the PO corresponding to the UE ID information according to the UE ID information; or

[0444] A base station that does not support the multicast broadcast feature sends a paging message containing only the UE ID information in the PO corresponding to the UE ID information according to the UE ID information;

[0445] or,

[0446] When receiving a group paging message containing MBS service information about an upcoming session start,

[0447] A base station supporting the multicast broadcast feature sends a paging message containing MBS service information in all POs, or after requesting the multicast service group member information from the core network, sends the paging message containing MBS service information only on the member corresponding POs, or sends the paging message containing MBS service information and UE ID information; or,

[0448] A base station that does not support the multicast broadcast feature sends a paging message containing the UE_ID only in the PO corresponding to the UE ID after requesting the corresponding UE ID information from the AMF.

[0449] During implementation, the base station paging module is further configured to configure the MBS-specific DRX cycle through a system message.

[0450] In implementation, the base station paging module is further configured to send the paging message to the UE via a unicast paging message or a multicast dedicated group paging message.

[0451] During implementation, the base station paging module is further used to send a group paging message at PO. If it is sent via a unicast paging message, the PO is a PO obtained based on the UE ID; or, if it is sent via an MBS dedicated group paging message, the PO is a PO obtained based on the MBS service information.

[0452] In implementation, the base station paging module is further configured to indicate, in a shortmessage manner, whether the group paging message sent via a unicast message contains MBS group paging information or whether it is a type containing MBS group paging information.

[0453] During implementation, the base station paging module is further used to configure fixed radio frames and subframe positions for receiving group paging messages within the MBS dedicated DRX cycle through system messages; or, for multicast services configured with the same set of MBS dedicated DRX cycle configurations, the time domain positions where the MBS service subscription or interested user groups need to monitor paging are dispersed in different POs or PFs according to the service identification information of the MBS service.

[0454] During implementation, the base station paging module is further configured to scramble the group paging message using the G-RNTI or GP-RNTI; or, scramble the group paging message and the unicast paging message using the P-RNTI.

[0455] During implementation, the base station paging module is further used to configure G-PO or unicast paging PO receiving bias when scrambling multicast dedicated group paging messages and unicast paging messages through P-RNTI; add group paging messages to unicast paging messages; and configure UE energy saving mode.

[0456] In implementation, the base station paging module is further configured to configure the G-PO or unicast paging PO reception bias through one of the following messages or a combination thereof:

[0457] System messages, RRC dedicated signaling.

[0458] For the convenience of description, the various parts of the above-mentioned device are divided into various modules or units according to their functions and described separately. Of course, when implementing the present invention, the functions of each module or unit can be realized in the same or multiple software or hardware.

[0459] Figure 6 This is a schematic diagram of the UE structure. As shown in the figure, the user equipment includes:

[0460] The processor 600 is configured to read the program in the memory 620 and execute the following process:

[0461] Receiving a paging message sent by a base station;

[0462] Based on the UE's support for the multicast broadcast feature, the UE reads the information in the paging message and receives the MBS service.

[0463] The transceiver 610 is configured to receive and send data under the control of the processor 600 .

[0464] During implementation, it further includes:

[0465] Receive the RNTI for the MBS group paging message allocated by the base station during the registration or join process.

[0466] During implementation, it further includes:

[0467] When releasing to the unconnected state after joining, one or a combination of the following MBS contexts is retained: the mapping relationship between different MBS services and G-RNTI, and GP-RNTI.

[0468] During implementation, it further includes:

[0469] When MBS is supported, after receiving the paging message at the PO corresponding to the MBS, the UE ID list and MBS service information are read.

[0470] During implementation, it further includes:

[0471] Determine whether the paging message contains MBS group paging information or is only a paging message according to the indication of the short message mode.

[0472] During implementation, it further includes:

[0473] Descramble the group paging message using the G-RNTI or GP-RNTI; or

[0474] Group paging messages and unicast paging messages are descrambled using the P-RNTI.

[0475] In implementation, when descrambling the group paging message and the unicast paging message through the P-RNTI, the method further includes:

[0476] Receive the G-PO or unicast paging PO receiving bias configured by the base station;

[0477] receiving a unicast paging message with a group paging message added;

[0478] Receive the UE energy saving mode configured by the base station.

[0479] In implementation, when receiving the G-PO or unicast paging PO reception bias configured by the base station, it is configured through one of the following messages or a combination thereof:

[0480] System messages, RRC dedicated signaling.

[0481] In implementation, when receiving a unicast paging message with a group paging message added thereto, the method further includes:

[0482] When the UE supports MBS services, read the IE containing the MBS service identifier to confirm whether there is an MBS service that the UE is interested in / subscribed to, and read the IE containing the UE ID information in the paging message; or

[0483] When the UE does not support the MBS service, the IE containing the UE ID information in the message is read and checked to confirm whether the paging message sent by the network is received.

[0484] In implementation, when receiving the UE energy saving mode configured by the base station, the method further includes:

[0485] When the PO or PF receiving the unicast paging wakes up only after receiving the message broadcast by the base station indicating whether the PO or PF supports the MBS service, the PO or PF receives the unicast paging.

[0486] During implementation, it further includes:

[0487] A fixed radio frame and subframe position for receiving a multicast dedicated group paging message within an MBS dedicated DRX cycle configured by a receiving base station through a system message; or

[0488] The receiving base station configures the same MBS-specific DRX cycle for multiple multicast services. The UE wakes up at the PO or PF corresponding to the MBS service it subscribes to and listens to the group paging message to confirm whether the MBS service is about to start.

[0489] Among them, Figure 6 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically various circuits of one or more processors represented by processor 600 and memory represented by memory 620, which are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 610 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. For different user devices, the user interface 630 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

[0490] The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 when performing operations.

[0491] An embodiment of the present invention further provides a UE, including:

[0492] UE paging module, used to receive paging messages sent by the base station;

[0493] The UE receiving module is used to receive the MBS service after reading the information in the paging message according to the UE's support for the multicast broadcast feature.

[0494] In implementation, the UE receiving module is further configured to receive an RNTI for an MBS group paging message allocated by the base station during a registration or join process.

[0495] In implementation, the UE receiving module is further configured to retain one or a combination of the following MBS contexts when releasing to a non-connected state after joining: a mapping relationship between different MBS services and G-RNTI, and a GP-RNTI.

[0496] In implementation, the UE receiving module is further used for reading the UE ID list and MBS service information when the UE supports MBS and receives a paging message at the PO corresponding to the MBS.

[0497] In implementation, the UE receiving module is further configured to determine, according to an indication of the short message mode, whether the paging message includes MBS group paging information or is only a paging message.

[0498] In implementation, the UE receiving module is further configured to descramble the group paging message using the G-RNTI or GP-RNTI; or descramble the group paging message and the unicast paging message using the P-RNTI.

[0499] During implementation, the UE receiving module is further used to receive the G-PO or unicast paging PO receiving bias configured by the base station when de-interfering the group paging message and unicast paging message through P-RNTI; receive the unicast paging message with the group paging message added; and receive the UE energy saving mode configured by the base station.

[0500] In implementation, the UE receiving module is further configured to receive the G-PO or unicast paging PO reception bias configured by the base station through one of the following messages or a combination thereof:

[0501] System messages, RRC dedicated signaling.

[0502] During implementation, the UE receiving module is further configured to, when receiving a unicast paging message with a group paging message added thereto, read an IE containing an MBS service identifier when the UE supports MBS services, to confirm whether there is an MBS service that the UE is interested in / subscribed to, and read and check the IE containing UE ID information in the paging message; or, when the UE does not support MBS services, read and check the IE containing UE ID information in the message, to confirm whether the paging message sent by the network is received.

[0503] During implementation, the UE receiving module is further configured to receive unicast paging only when the PO or PF of the unicast paging wakes up when the UE energy saving mode configured by the base station is received and no message broadcast by the base station indicating whether it supports the MBS service is received.

[0504] In implementation, the UE receiving module is further configured to receive a fixed radio frame and subframe position for receiving a multicast dedicated group paging message within an MBS dedicated DRX cycle configured by the base station through a system message; or,

[0505] The receiving base station configures the same MBS-specific DRX cycle for multiple multicast services. The UE wakes up at the PO or PF corresponding to the MBS service it subscribes to and listens to the group paging message to confirm whether the MBS service is about to start.

[0506] For the convenience of description, the various parts of the above-mentioned device are divided into various modules or units according to their functions and described separately. Of course, when implementing the present invention, the functions of each module or unit can be realized in the same or multiple software or hardware.

[0507] A computer-readable storage medium is also provided in an embodiment of the present invention, which stores a computer program for executing the above-mentioned AMF side paging message sending method, base station side paging message sending method, or UE side paging message receiving method.

[0508] For specific implementation, please refer to the implementation of the paging message sending method on the AMF side, the paging message sending method on the base station side, or the paging message receiving method on the UE side.

[0509] In summary, in the technical solution provided by the embodiment of the present invention, the way in which the AMF sends a paging message to the base station is as follows:

[0510] Two sets of paging messages are sent, one set of paging messages only contains the MBS service information (such as TMGI, multicast broadcast address) of the upcoming session start, and the other set of paging messages is a traditional paging message, that is, only contains UE ID information.

[0511] The AMF sends the same complete set of information, including the MBS service information (such as TMGI, multicast broadcast address) and UE ID information of the upcoming session start.

[0512] The AMF only sends a group paging message, that is, the message sent by the AMF only contains the MBS service information (such as TMGI, multicast broadcast address) where the session start will occur.

[0513] MBS-specific paging configuration and G-PO / PF calculation solutions are also provided.

[0514] A solution is also provided in which MBS group paging is scrambled using a dedicated RNTI or G-RNTI.

[0515] It also provides the ability to retain MBS context when the UE enters the idle / inactive state after joining, including but not limited to: mapping of different MBS services to G-RNTI (mapping relationship between MBS session and G-RNTI), GP-RNTI, etc.

[0516] It also provides a consideration of whether MBS is supported when establishing the NG interface.

[0517] MBS is also considered for TA configuration.

[0518] G-PO / unicast PO bias (window) configuration scheme is also provided.

[0519] It also provides a solution for whether the network broadcast supports multicast and the specific services that can be broadcast.

[0520] Through the above solution, it is possible to ensure that an appropriate method is selected under different base stations to page the UE to inform it that the MBS service is about to start, while minimizing the impact on the UE.

[0521] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0522] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0523] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0524] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0525] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A method for sending a paging message, characterized in that: include: When the multicast broadcast service (MBS) is about to start, the access and mobility management function (AMF) sends a paging message to each base station in the paging area based on the support of the multicast broadcast feature by each base station in the paging area. Send paging messages to each base station in the paging area based on its support for the multicast broadcast feature. This includes situations where there are base stations in the paging area that support the multicast broadcast feature. Send a set of group paging messages containing the MBS service information of the upcoming session start and a set of paging messages containing the user equipment identification UE ID information.

2. The method according to claim 1, wherein AMF determines whether the base station supports multicast broadcast features when establishing the NG interface between the base station and AMF.

3. The method according to claim 1, wherein The AMF determines the paging area in one of the following ways or a combination thereof: The AMF determines the group paging area and unicast paging area based on the tracking area list (TA list) and the group member information of the multicast service. The AMF determines the group paging area and the unicast paging area according to the configuration mode of the tracking area TA.

4. The method according to claim 3, wherein The configuration method of the TA includes one of the following methods: All base stations in the TA support MBS, or none of them support MBS; or, Base stations that support MBS and base stations that do not support MBS are in the same TA.

5. The method according to claim 1, wherein When the paging message is sent to the user equipment UE through the base station, it is sent through a unicast paging message or a multicast dedicated group paging message.

6. The method according to claim 1, wherein MBS service information includes one or a combination of the following information: MBS session ID, temporary mobile group identity TMGI, multicast IP address.

7. A method for sending a paging message, characterized in that: include: The base station receives the paging message sent by the AMF; After reading the information in the paging message, the base station pages the UE based on the base station's support for the multicast broadcast feature; The base station reads the following information from the paging message based on its support for the multicast broadcast feature: Upon receiving a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information, A base station that supports the multicast broadcast feature selects the group paging message and sends a paging message containing MBS service information in all paging time POs, or a base station that does not support the multicast broadcast feature selects the paging message and sends a paging message containing only UE ID information in the PO corresponding to the UE ID.

8. The method according to claim 7, wherein Further including: The base station configures the MBS-specific discontinuous reception (DRX) cycle through a system message.

9. The method according to claim 7, wherein When the paging message is sent to the UE by the base station, it is sent via a unicast paging message or a multicast dedicated group paging message.

10. The method according to claim 9, wherein The base station sends a PO of a group paging message further including: If sent via unicast paging message, the PO is obtained based on the UE ID; or If the PO is sent through an MBS dedicated group paging message, the PO is obtained based on the MBS service information.

11. The method according to claim 9, wherein Further including: For a group paging message sent via a unicast message, whether it contains MBS group paging information or whether it is a type that contains MBS group paging information is indicated in a short message manner.

12. The method according to claim 9, wherein Further including: The base station configures fixed radio frames and subframe positions for receiving group paging messages within the MBS-dedicated DRX cycle through system messages; or, For multicast services configured with the same set of MBS-specific DRX cycle configurations, the base station disperses the time domain locations where MBS service subscriptions or interested user groups need to monitor paging in different POs or paging frames PFs according to the service identification information of the MBS service.

13. The method according to claim 9, wherein Further including: Scrambling the group paging message using the group radio network temporary identifier G-RNTI or the group paging radio network temporary identifier GP-RNTI; or, The group paging message and the unicast paging message are scrambled by the paging-radio network temporary identifier P-RNTI.

14. The method according to claim 13, wherein When scrambling the multicast dedicated group paging message and the unicast paging message by using the P-RNTI, further comprising: Configure the group paging time G-PO or unicast paging PO receiving offset; Add group paging message to unicast paging message; Configure the UE energy-saving mode.

15. An AMF, characterized in that include: The processor reads the program from the memory and performs the following steps: When the MBS service is about to start, a paging message is sent to each base station in the paging area according to the support status of each base station in the paging area for the multicast broadcast feature; a transceiver for receiving and sending data under the control of the processor; Send paging messages to each base station in the paging area based on its support for the multicast broadcast feature. This includes situations where there are base stations in the paging area that support the multicast broadcast feature. Send a set of group paging messages containing the MBS service information of the upcoming session start and a set of paging messages containing the user equipment identification UE ID information.

16. An AMF, characterized in that include: The AMF paging module is used to send paging messages to each base station in the paging area when the MBS service is about to start, based on the support status of each base station in the paging area for the multicast broadcast feature; Send paging messages to each base station in the paging area based on its support for the multicast broadcast feature. This includes situations where there are base stations in the paging area that support the multicast broadcast feature. Send a set of group paging messages containing the MBS service information of the upcoming session start and a set of paging messages containing the user equipment identification UE ID information.

17. A base station, characterized in that: include: The processor reads the program from the memory and performs the following steps: Receive paging messages sent by AMF; After reading the information in the paging message, the UE is paged based on the base station's support for the multicast broadcast feature; a transceiver for receiving and sending data under the control of the processor; Depending on the base station's support for multicast broadcast features, the information read from the paging message includes: Upon receiving a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information, A base station that supports the multicast broadcast feature selects the group paging message and sends a paging message containing MBS service information in all paging time POs, or a base station that does not support the multicast broadcast feature selects the paging message and sends a paging message containing only UE ID information in the PO corresponding to the UE ID.

18. A base station, characterized in that: include: The base station receiving module is used to receive the paging message sent by the AMF; The base station paging module is used to read the information in the paging message and page the UE according to the base station's support for the multicast broadcast feature; Depending on the base station's support for multicast broadcast features, the information read from the paging message includes: Upon receiving a group paging message containing the MBS service information of the upcoming session start and a paging message containing the UE ID information, A base station that supports the multicast broadcast feature selects the group paging message and sends a paging message containing MBS service information in all paging time POs, or a base station that does not support the multicast broadcast feature selects the paging message and sends a paging message containing only UE ID information in the PO corresponding to the UE ID.

19. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program for executing the method according to any one of claims 1 to 14.

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