CN117440327A

CN117440327A - Multicast service receiving method, device, terminal and network side equipment

Info

Publication number: CN117440327A
Application number: CN202210836821.3A
Authority: CN
Inventors: 刘佳敏
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2024-01-23
Also published as: WO2024012304A1

Abstract

The application discloses a multicast service receiving method, a device, a terminal and network side equipment, which belong to the technical field of communication, and the multicast service receiving method in the embodiment of the application comprises the following steps: the terminal determines a first cell or a target frequency point based on at least one of network side signaling, a preset rule and terminal capability; the terminal resides in the first cell in an inactive state and receives a first multicast service; wherein, in the case of determining the target frequency point, the first cell in which the terminal resides is determined based on the target frequency point.

Description

Multicast service receiving method, device, terminal and network side equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a multicast service receiving method, a device, a terminal and network side equipment.

Background

Currently, in a communication system, only a terminal is supported to receive multicast (multicast) service in a Connected state (Connected), which may cause a large number of terminals to remain in a Connected state for receiving the multicast service, thereby causing a large network load.

Disclosure of Invention

The embodiment of the application provides a multicast service receiving method, a device, a terminal and network side equipment, which can solve the problem of larger network load.

In a first aspect, a method for receiving multicast service is provided, including:

the terminal determines a first cell or a target frequency point based on at least one of network side signaling, a preset rule and terminal capability;

the terminal resides in the first cell in an inactive state and receives a first multicast service;

wherein, in the case of determining the target frequency point, the first cell in which the terminal resides is determined based on the target frequency point.

In a second aspect, a multicast service receiving method is provided, including:

the method comprises the steps that network side equipment sends network side signaling to a terminal, wherein the network side signaling is used for determining a first cell or a target frequency point by the terminal;

the first cell is a cell where the terminal resides in an inactive state and receives a first multicast service; or alternatively

The target frequency point is used for the terminal to determine a cell which resides in an inactive state and receives a first multicast service.

In a third aspect, there is provided a multicast service receiving apparatus, including:

the determining module is used for determining a first cell or a target frequency point based on at least one of network side signaling, a preset rule and terminal capability;

a receiving module, configured to camp on the first cell in an inactive state, and receive a first multicast service;

In a fourth aspect, there is provided a multicast service receiving apparatus, including:

the system comprises a sending module, a receiving module and a receiving module, wherein the sending module is used for sending network side signaling to a terminal, and the network side signaling is used for the terminal to determine a first cell or a target frequency point;

In a fifth aspect, a terminal is provided, including a processor and a memory, where the memory stores a program or an instruction that can be executed on the processor, where the program or the instruction implements the steps of the multicast service receiving method on the terminal side provided in the embodiment of the present application when executed by the processor.

In a sixth aspect, a terminal is provided, including a processor and a communication interface, where the processor or the communication interface is configured to receive and determine a first cell or a target frequency point based on at least one of network side signaling, a preset rule and terminal capability; the communication interface is used for residing in the first cell in the inactive state and receiving a first multicast service; wherein, in the case of determining the target frequency point, the first cell in which the terminal resides is determined based on the target frequency point.

In a seventh aspect, a network side device is provided, where the network side device includes a processor and a memory, where the memory stores a program or an instruction that can be executed by the processor, where the program or the instruction implements steps of a multicast service receiving method on a network side device provided in an embodiment of the present application.

An eighth aspect provides a network side device, including a processor and a communication interface, where the communication interface is configured to send a network side signaling to a terminal, where the network side signaling is used by the terminal to determine a first cell or a target frequency point; wherein, the first cell is a cell where the terminal resides and receives a first multicast service in an inactive state; or the target frequency point is used for the terminal to determine a cell which resides in an inactive state and receives the first multicast service.

In a ninth aspect, there is provided a readable storage medium, where a program or an instruction is stored, where the program or the instruction, when executed by a processor, implements a step of a method for receiving a multicast service on a terminal side provided in an embodiment of the present application, or where the program or the instruction, when executed by the processor, implements a step of a method for receiving a multicast service on a network side device side provided in an embodiment of the present application.

In a tenth aspect, a chip is provided, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, where the processor is configured to execute a program or an instruction, to implement a method for receiving a multicast service on a terminal side provided by an embodiment of the present application, or where the processor is configured to execute a program or an instruction, to implement a method for receiving a multicast service on a network side device side provided by an embodiment of the present application.

In an eleventh aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the multicast service reception method on the terminal side provided by the embodiments of the present application, or the computer program/program product being executed by at least one processor to implement the steps of the multicast service reception method on the network side device side provided by the embodiments of the present application.

In a twelfth aspect, there is provided a frequency domain resource determining system, including: the terminal can be used for executing the steps of the multicast service receiving method at the terminal side provided by the embodiment of the application, and the network side device can be used for executing the steps of the multicast service receiving method at the network side provided by the embodiment of the application.

In the embodiment of the application, the terminal determines a first cell or a target frequency point based on at least one of network side signaling, a preset rule and terminal capability; the terminal resides in the first cell in an inactive state and receives a first multicast service; wherein, in the case of determining the target frequency point, the first cell in which the terminal resides is determined based on the target frequency point. Thus, the terminal can be supported to receive the multicast service in the inactive state, and the network load can be reduced.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a flowchart of a multicast service receiving method provided in an embodiment of the present application;

fig. 3 is a flowchart of another multicast service receiving method provided in an embodiment of the present application;

fig. 4 is a block diagram of a multicast service receiving apparatus according to an embodiment of the present application;

fig. 5 is a block diagram of a multicast service receiving apparatus according to an embodiment of the present application;

fig. 6 is a block diagram of a communication device according to an embodiment of the present application;

fig. 7 is a block diagram of a terminal according to an embodiment of the present application;

fig. 8 is a block diagram of a network side device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogon) al Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (SC-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a home appliance), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may comprise an access network device or a core network device, wherein the network side device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. The network side device 12 may include a base station, a WLAN access point, a WiFi node, or the like, where the base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmitting/receiving point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that the base station in the NR system is merely described as an example in the embodiment of the present application, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

The following describes in detail, by means of some embodiments and application scenarios thereof, a method, an apparatus, a terminal, and a network side device for receiving a multicast service provided in the embodiments of the present application with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flowchart of a multicast service receiving method provided in an embodiment of the present application, as shown in fig. 2, including the following steps:

201. the terminal determines a first cell or a target frequency point based on at least one of network side signaling, a preset rule and terminal capability.

The network side signaling may be a signaling that the terminal receives dynamic, static or semi-static transmission of the network side device, where the signaling may explicitly or implicitly indicate the first cell or the target frequency point, or the signaling may explicitly or implicitly indicate that the terminal preferentially selects the first cell or the target frequency point.

The preset rule may be a rule defined by a protocol, or a rule configured by a network side for a terminal, and may also be called a default rule. The rule may explicitly or implicitly indicate the first cell or the target frequency point, or may explicitly or implicitly indicate that the terminal preferentially selects the first cell or the target frequency point.

The terminal capability may be a capability of the terminal to receive the multicast service, for example, the terminal capability may indicate that the terminal may receive the multicast service in the first cell or the target frequency point.

Through at least one of the preset rule and the terminal capability, the terminal can determine the first cell or the target frequency point in a default manner.

It should be noted that, in some embodiments, the terminal may determine the first cell or the target frequency point based on a plurality of network side signaling, a preset rule, and a terminal capability, for example: the network side signaling indicates a preset rule preferentially adopted by the terminal, and the terminal determines the first cell or the target frequency point by adopting the rule, for example: the terminal determines the first cell or the target frequency point and the like in a plurality of cells or target frequency points indicated by network side signaling or preset rules based on terminal capability.

The first cell is a cell in which the terminal resides in an inactive state and is capable of receiving a first multicast service.

The target frequency point is a frequency point where the terminal resides in an inactive state and is capable of receiving the first multicast service.

The determining the first cell or the target frequency point may be that the first cell or the target frequency point is selected Cheng Queding in a residence process, a cell selection process or a cell reselection process.

Step 201 may be to obtain cell residence information and/or cell reselection information in a non-connected state based on at least one of network side signaling, a preset rule and terminal capability, so as to determine the first cell or the target frequency point.

202. The terminal resides in the first cell in an inactive state and receives a first multicast service;

The step 202 may be that the terminal camps on the first cell when released from the connected state to the inactive state.

When step 201 determines the first cell, step 202 directly camps on the first cell in the inactive state and receives a first multicast service; when the target frequency point is determined in step 201, step 202 determines the first cell based on the target frequency point, and camps on the first cell in the inactive state, and receives the first multicast service.

In the embodiment of the present application, the above steps can support the terminal to receive the multicast service in the inactive state, and the network load of the terminal in the inactive state is smaller than the network load of the terminal in the connection state, so that the embodiment of the present application can reduce the network load. In addition, the complexity and power consumption of the terminal in the inactive state are lower than those in the connected state, so that the power consumption of the terminal can be reduced.

As an alternative embodiment, the first cell is a multicast service cell (multicast cell) that transmits the first multicast service; or alternatively

The first cell is a cell (not Multicast cell) that does not send the first Multicast service, and the terminal is capable of receiving the first Multicast service when the terminal resides in the first cell.

In the case that the first cell is a cell that does not transmit the first multicast service, the terminal may be able to reside in another cell or a frequency point other than the multicast service cell, but at the same time be able to receive the multicast service of the multicast service cell. For example: a terminal with higher receiving capability may camp on one cell and simultaneously receive the traffic of another cell or frequency point.

In this embodiment, since the first cell may be a multicast service cell or a non-multicast service cell, network load balancing may be performed by these two cells, for example: the network load of the multicast service cell is heavier, and the configuration terminal resides in the non-multicast service cell to receive the multicast service.

As an optional implementation manner, the network side signaling includes first indication information, where the first indication information is used to indicate at least one of the following:

Preferentially camping on the first cell;

and preferentially residing based on the target frequency point.

The first indication information may explicitly or implicitly indicate the at least one item.

The preferential residence in the first cell may be that the terminal preferentially resides in the first cell in a residence process, a cell selection process or a cell reselection process; for example: the first indication information indicates that the terminal is preferentially resided in a cell for sending the multicast service in an explicit or implicit mode.

The preferential residence based on the target frequency point may be that the terminal preferentially resides based on the target frequency point in a residence process, a cell selection process or a cell reselection process; for example: the first indication information indicates the terminal to reside in the frequency point for sending the multicast service preferentially through an explicit or implicit mode.

As an alternative embodiment, the network side signaling includes, but is not limited to, at least one of:

common signaling, dedicated signaling.

In some embodiments, the first indication information included in the common signaling is valid for all terminals that receive the common signaling; or the first indication information included in the common signaling is effective to a terminal of a first type for receiving the common signaling, wherein the terminal is the terminal of the first type.

The first type of terminal may include: low-capability terminals (Device with Reduced Capability, abbreviated as RedCap), low-Cost terminals (Low-Cost), internet of things (Internet of Things, ioT) terminals, and the like.

In addition, the first type may be explicitly or implicitly indicated by the network side signaling.

In some embodiments, the first indication information included in the common signaling is valid for the first multicast service.

In this embodiment, the multicast service generated by the first indication information may be indicated by a service identifier of the multicast service or a temporary mobile group identifier (Temporary Mobile Group Identity, TMGI). Alternatively, the multicast service generated by the first indication information may be indicated by a service feature of the multicast service, for example, the service feature may be a quality of service (Quality of Service, qoS) feature, for example, a block error rate is lower than a threshold 1 and/or a service delay is lower than a threshold 2, etc., where the multicast service is supported to preferentially reside in the first cell, and the rest of services that do not meet the feature are not allowed.

In some embodiments, the dedicated signaling is dedicated signaling issued by a serving cell of the terminal in a connected state.

The special signaling service cell issues, and for the service cell of the terminal, the service cell can comprehensively judge and evaluate the service cell and reasonably configure the terminal to meet the reasonable compromise in terms of cell load and terminal performance because the service cell grasps the situation of the terminal and the current situation of the network in more detail.

In some embodiments, the first indication information is indication information carried in a first information domain of the dedicated signaling, or the first indication information is indication information carried in a second information domain of the dedicated signaling;

wherein the first information field comprises at least one of:

a redirection domain defined for the dedicated signaling in a protocol, and a cell reselection configuration domain defined for the dedicated signaling in a protocol;

wherein the second information domain is at least one information domain newly defined in the dedicated signaling.

The first information field carries the first indication information, which can be understood as multiplexing at least one of the redirection field and the cell reselection configuration field, so that the complexity of receiving the multicast service by the terminal in the inactive state can be reduced.

The fact that the second information field carries the first indication information can be understood that the information field is newly defined in the dedicated signaling, so that flexibility of indication of the dedicated signaling is improved. In addition, the newly defined information domain may be a newly defined redirection and/or cell reselection configuration domain, etc.

In some embodiments, in the case that the first indication information is indication information carried by a first information domain of the dedicated signaling:

the special signaling also comprises second indication information, wherein the second indication information is used for indicating the effective time of the first indication information; and/or

The dedicated signaling further includes third indication information, where the third indication information is used to indicate that the first information domain is effective for the first multicast service.

The first information field validating the first multicast service means that indication information carried by the first information field validates the first multicast service.

In this embodiment, the effect of precisely controlling the terminal residence and/or cell reselection can be achieved by the effective time. In addition, the valid time may represent a transmission time of the first multicast service.

The third indication information is used to indicate that the first information domain takes effect on the first multicast service, and the third indication information indicates that the redirection domain and/or the cell reselection configuration domain in the dedicated signaling is a redirection domain and/or a cell reselection configuration domain generated for the multicast service.

In some embodiments, the third indication information is used to indicate that the first information domain is active for all multicast services; or alternatively

The third indication information is used for indicating at least one multicast service, the indication information carried by the first information field is effective to the at least one multicast service, and the at least one multicast service comprises the first multicast service.

The first information domain validating all multicast services may be understood that the terminal performs residence according to the residence mode indicated by the indication information carried by the first information domain for receiving any multicast service.

The fact that the indication information carried in the first information domain is effective for the at least one multicast service may be understood that the terminal only performs the residence according to the residence mode indicated by the indication information carried in the first information domain when receiving the at least one multicast service, and may not perform residence according to the residence mode indicated by the indication information carried in the first information domain for the rest of the multicast services.

For example: the indication information carried by the first information domain is configured to be effective to all multicast services through 1 bit, or the indication information carried by the first information domain is indicated to be effective to at least one multicast service through a multicast service identification list or a service characteristic list.

In this embodiment, by validating all multicast services or at least one multicast service, the effect of precisely controlling terminal residence and/or cell reselection can be achieved.

In some embodiments, in the case that the first indication information is indication information carried by a second information domain of the dedicated signaling:

the second information field takes effect on all multicast services; or alternatively

The dedicated signaling further includes fourth indication information for indicating that the second information domain is effective for at least one multicast service, the at least one multicast service including the first multicast service.

The second information field may be effective for all multicast services, and the default second information field may be effective for all multicast services.

The validating of the at least one multicast service may be by indicating that the first information domain is validating the at least one multicast service via a multicast service identification list or a service characteristics list.

One example is as follows:

this embodiment mainly describes cell camping and/or cell reselection rules, which may be specifically as follows:

for an Inactive UE receiving multicast service, when releasing from a Connected state to an Inactive state, the Inactive UE can camp on a cell where the current multicast service is located, which is one of the most convenient cases for receiving multicast service.

In order to reach a cell where a multicast service resides (i.e., multicast cell), this can be achieved by the following method:

explicit signaling informs the terminal to reside preferentially in the multicast cell.

The explicit signaling method can be divided into two types, namely public signaling and dedicated signaling:

the common signaling means, e.g. in a system information block (System Information Block, SIB), configures the multicast cell support or allows the terminal to be selected to camp preferentially because of the need to receive multicast traffic in the active state, in an explicit configuration domain.

The configuration may be valid for all terminals, i.e. once configured, the cell may be selected for preferential camping for all terminals released to the Inactive state to receive multicast service.

The configuration may also be valid for certain types of terminals, e.g. only for terminals with Low capabilities such as RedCap, low-Cost, ioT, etc., explicitly or implicitly specifying the type of terminal for which the configuration is applicable. The explicit manner may refer to carrying the specific terminal type in the SIB domain, and the implicit manner may be that the specific terminal type is not carried, but the terminal range for the domain is specified in the protocol description or the interpretation of the domain.

The configuration may also distinguish between different multicast services to be particularly effective, i.e. after a terminal receiving a part of the multicast services is released back to the Inactive state, the cell is allowed to be selected for preferential camping, and after a terminal receiving another part of the multicast services is released back to the Inactive state, the cell is not allowed to be selected for preferential camping, and conventional camping and/or cell reselection criteria need to be followed. The range of allowed multicast traffic may be explicitly carried in SIB signaling, for example: describing which services are supported to preferentially reside in the cell in a manner of multicast service identification (TMGI), and then not allowing the rest of services; or it is for example: the SIB signaling carries multiple service features, such as what service QoS features are satisfied, the block error rate is lower than the threshold 1 and/or the service delay is lower than the threshold 2, etc., so that these services are supported to preferentially reside in the cell, and the services with the remaining unsatisfied features are not allowed. The manner of the traffic feature may also be implicitly indicated, i.e. not present in the SIB, but specified in the plain text word or domain interpretation in the protocol.

The dedicated signaling method may be radio resource control (Radio Resource Control, RRC) dedicated signaling (RRC dedicated signaling) for performing point-to-point dedicated control on the terminal. Configuration information for terminal camping indication and/or cell reselection priority is carried, for example, in an RRC release (RRC release) message.

The dedicated signaling may be generally sent by a serving cell in the current Connected state of the terminal, for which, because it is quite clear of information such as the type and/or capability of the terminal, for example, the terminal is a terminal with Low capability such as a RedCap, low-Cost, ioT, or the like, or a terminal with a simple implementation or extremely high power saving requirement, or the supported carrier aggregation capability reported from the Connected state of the terminal finds that the terminal can only continue to receive multicast services if it resides in the multicast cell, for which, the terminal may indicate that they reside in the multicast cell preferentially by means of dedicated signaling. For other terminals, normal camping and/or cell reselection rules may be followed, e.g., camping and cell reselection may be performed in compliance with cell reselection priorities in SIBs, to facilitate the effects of load balancing.

For the service cell of the terminal, since it is also quite clear about the current interested multicast service condition of the terminal, such as the QoS requirement of the service, it can be determined in real time according to the current interested multicast service requirement of the terminal, whether the terminal is allowed to preferentially select the multicast cell or multicast frequency point to reside when returning to the active, so that different terminals can be notified by using dedicated signaling.

In particular, for the serving cell of the terminal, since it is also quite clear that the multicast cell and/or the neighboring cells of the multicast cell (such as other inter-frequency cells covered by the same cell) reside and/or load conditions, for example, judging from random access collision probability and/or RRC connection initiation conditions of these cells, the terminal can be split to other cells as much as possible to reside in the case that the multicast cell is heavy and the other cells are light, otherwise, in the case that the multicast cell is light and the other cells are heavy, more terminals are accommodated in the multicast cell.

In a word, the service cell can comprehensively judge and evaluate the situation of the terminal and the current situation of the network in a more detailed manner, and reasonably configure the terminal to meet the reasonable compromise in terms of cell load and terminal performance.

In particular, regarding the detailed configuration domain of the dedicated signaling, since the dedicated signaling, such as the RRC Release message, already has a configuration information domain regarding redirection and cell reselection, regarding redirection and/or cell reselection configuration information carried by the multicast service reception, these existing configurations may be multiplexed, and a new domain may be adopted for configuration:

1. Multiplexing existing redirection and/or cell reselection configuration fields:

if the network side can know the end time of the service of interest of the terminal in advance, the duration can be configured in a defined configuration domain, for example: filling in proper time length (for example, the time length equal to the multicast service) in the effective time domain, so that the configuration domains can be just effective in the time range of service transmission, and fail after the service is finished, thereby achieving the effect of precisely controlling terminal residence and/or cell reselection by matching with the service time length better;

alternatively, adding a new Multicast indication field in the defined configuration field, e.g. indicating that this is a redirection and/or cell reselection configuration field that is active for Multicast traffic, there may be the following ways:

the 1bit configuration domain may be valid for all multicast services, in which way, if any of the multicast services is not finished or is being received by the terminal, the redirection and/or cell reselection configuration domain continues to be valid until all multicast services are finished being received, the configuration domain is not disabled;

or may be a valid manner for a particular service list, including a valid multicast service identification list, such as a TMGI list, associated with the redirection and/or cell reselection configuration domain. For example, the terminal is interested in or is receiving 3 services, but may only associate one or two of them to be valid when configuring the redirection and/or cell reselection configuration domain, and give a detailed list of services. In this way, if any multicast service in the specified service list is not finished or is being received, the redirection and/or cell reselection configuration domain continues to be valid until all services in the specified service list are finished to be received, and the configuration domain is not invalidated. For any service not in the indicated list of services, its end-of-line reception does not affect the functioning and failure of the configuration domain.

In the above way, the redirection and/or cell reselection control of the UE can be performed more accurately for the multicast specific service.

2. Taking new redirection and/or cell reselection configuration fields:

if new redirection and/or cell reselection configuration domains are taken, then in designing or adding these configuration domains, it may be specified by name or protocol specification that these configuration domains are valid for multicast traffic reception, so that these configuration domains may be naturally associated to multicast traffic.

If these new configuration fields do not carry further ranges of validity, it may be interpreted as valid for all multicast traffic that the terminal is receiving or interested in, and if any of the multicast traffic is not finished or is being received by the terminal, the redirection and/or cell reselection configuration fields continue to be valid until all multicast traffic is finished being received, and the configuration fields will not be invalidated;

if these new configuration fields further carry a validation range, such as a validated service identification list, it may be interpreted as valid only for the indicated service, and if any multicast service in the indicated service list is not finished or is being received by the terminal, the redirection and/or cell reselection configuration fields continue to be valid until all services in the indicated service list are finished to be received, and the configuration fields are not invalidated. For any service not in the indicated list of services, its end reception or not does not affect the functioning and failure of the configuration domain.

As to how to determine that a multicast service has ended, there may be some default or configuration, for example, a configuration or default period T, in which no more data about the multicast service is received, and a period number N, in which no more data about the multicast service is received, and a discontinuous reception (Discontinuous Reception, DRX) period corresponding to a continuous N periods, for example, a service period or a service, may be configured or default, and in which the service is considered to be ended. The network side may also explicitly inform the end of the service, for example, schedule a control unit (Media Access Control Control Element, MAC CE) of the media access control or a special user plane control protocol data unit (UP control PDU) with a Group-radio network temporary identifier (G-RNTI) of the service, or carry an indication in a header structure of the user plane data protocol data unit (UP data PDU), and display a service end flag.

As an optional implementation manner, the preset rule is used to instruct the terminal to preferentially camp on the first cell or the target frequency point.

The above-mentioned priority residing in the first cell or the target frequency point may be that the priority of the first cell or the target frequency point is set to be the highest priority, or may be that the first cell or the target frequency point is the first cell or the frequency point that is preferentially selected by the terminal when the cell is selected or reselected.

In some embodiments, the preset rules include, but are not limited to, at least one of:

allowing the terminal to set at least one of the multicast service cell and the frequency point where the multicast service is located as the highest priority of cell reselection under the condition that the terminal can only continuously receive the multicast service of interest only when the terminal resides in the multicast service cell;

under the condition that the terminal does not reside in the multicast service cell and can continuously receive the multicast service of interest, prohibiting the terminal from setting at least one of the multicast service cell and the frequency point where the multicast service is located as the highest priority of cell reselection;

allowing the terminal to set at least one of a cell and a frequency point which cannot receive the multicast service of interest when the terminal resides as the lowest priority of cell reselection;

allowing the terminal to set at least one of a multicast service cell and a frequency point where the multicast service is located as the highest priority of cell reselection under the condition that the terminal has a requirement of receiving the multicast service in an inactive state;

And under the condition that the multicast service of interest of the terminal is ended, prohibiting the terminal from setting at least one of a multicast service cell and a frequency point where the multicast service is located as the highest priority of cell reselection.

The terminal can preferentially select the first cell or the target frequency point to reside through the preset rule.

In some embodiments, the preset rule is effective for all multicast services; or, the preset rule is effective to at least one multicast service, wherein the at least one multicast service comprises the first multicast service; and/or

The preset rule takes effect on all terminals; or, the preset rule is effective for at least one terminal, and the at least one terminal comprises the terminal.

The validating of the at least one multicast service may be differentiating the validated multicast service by service identification and service characteristics, and the validating of the at least one terminal may be differentiating the validated terminal by the type of the terminal.

One example is as follows:

by adopting the default rule (i.e. the preset rule), the terminal can be preferentially resided in the multicast cell, and for the default rule mode, the cost of displaying the indication on the network side is saved.

The default rule may be that some rules are specified in the protocol, so that the terminal meeting the conditions may reside in the multicast cell as preferentially as possible, and receive the multicast service, where the default rule may include at least one of the following:

when the terminal can only continuously receive the interested multicast service if the terminal resides in the multicast cell, allowing the terminal to reside in the multicast cell preferentially and/or setting the frequency point where the multicast service is located as the highest priority frequency point of cell reselection;

when the terminal can continue to receive the interested multicast service without residing in the multicast cell, the terminal is not allowed to reside in the multicast cell preferentially and/or the frequency point where the multicast service is located is set as the highest priority frequency point for cell reselection;

when a terminal resides in a certain frequency point and cannot continuously receive the multicast service of interest, the terminal is allowed to set the multicast cell point and/or the frequency point as the lowest priority frequency point of cell reselection;

When the terminal has the interested multicast service Inactive receiving requirement, allowing the terminal to reside in the multicast cell preferentially and/or setting the frequency point where the multicast service is located as the highest priority frequency point for cell reselection;

when the multicast service of interest to the terminal is finished, the terminal is not allowed to reside in the multicast cell preferentially and/or the frequency point where the multicast service is located is set as the highest priority frequency point of cell reselection.

Wherein each of the above rules may be applicable to all multicast services, or to a default multicast service type, e.g. valid only for services satisfying certain service characteristics, which may be service types (e.g. real-time services), or service QoS characteristics, e.g. block error rate below threshold 1 and/or delay below threshold 2, etc.;

each of the above rules may be applicable to all terminals, or to default terminal types, e.g. valid only for terminals with Low capabilities such as RedCap, low-Cost, ioT, etc., or when the terminal has complexity control or power saving requirements, or when the UE cannot afford mobility management of both camping cells/frequency points and multicast cells/frequency points, or when it cannot afford mobility assessment of both camping cells/frequency points and multicast cells/frequency points.

As an optional implementation manner, in a case that the first cell is a cell that does not transmit the first multicast service, the terminal determines based on at least one of network side signaling, a preset rule, and terminal capability:

prohibiting the terminal from setting at least one of a multicast service cell and a frequency point where the multicast service is located as the highest priority of cell reselection;

and not supporting the terminal to set at least one of the multicast service cell and the frequency point where the multicast service is located as the highest priority of cell reselection.

In this embodiment, the terminal may be caused to camp on a non-multicast service cell by at least one of the above items, so as to reduce the load of the multicast service cell.

One example is as follows:

in this embodiment, the terminal resident non-Multicast cell receives the Multicast service, which may specifically be as follows:

for an Inactive terminal receiving the multicast service, although the Inactive terminal can reside in the cell where the current multicast service is located when released from the Connected state to the Inactive terminal, the situation is the most convenient service receiving situation from the terminal perspective, but if a large number of terminals reside in the same cell or frequency point, the increase of system load will also be caused, and the collision probability of random access resources and the access of other unicast terminals will be affected poorly. Therefore, from the network perspective, it may be desirable that the residence of the terminal can be dispersed, for example, different residence modes are adopted for terminals with different capabilities, so that not only is the multi cast service reception ensured, but also load balancing can be better performed from the system performance perspective, and normal access of other terminals is facilitated.

In one manner, different camping modes are distinguished according to terminal capability, and for a UE that can only receive Multicast service if camping on a cell where the Multicast service is located, such as a single-frequency point receiving capability, such a terminal allows the UE to camp on the Multicast cell or a Multicast broadcast service (Multicast/Broadcast Service, MBS) cell, and/or sets a frequency point where the Multicast cell is located as a frequency point with highest cell reselection priority, so as to ensure that the terminal can always camp on the cell to receive service. For terminals with higher receiving capability, if the terminal can reside in other frequency points and receive multicast service on the multicast cell at the same time, such terminals are not allowed to reside in the multicast cell directly, and also cannot set the multicast frequency point as the frequency point with the highest cell reselection priority, the terminal can find a suitable cell for residence according to the order of the cell reselection priority from high to low, and meanwhile, service reception of the multicast cell is maintained.

In the above embodiment, various control manners in which the network side displays instructions or defaults to perform cell residence and/or cell reselection are given, while mostly described by taking the case of reserving in a multicast cell/frequency point as an example, a similar mechanism or the reverse of the condition thereof is also suitable for controlling to avoid multicast cell/frequency point residence. For example, the network displays a manner of indicating that the multicast cell/frequency point is allowed to preferentially camp on or set as the reselected highest priority frequency point, and when the network does not indicate, the network does not allow or support the multicast cell/frequency point to preferentially camp on or set as the reselected highest priority frequency point. Or, if some default rules are met, the terminal is allowed to perform multi-cast cell/frequency point preferential residence or set as the reselected highest priority frequency point, and if the rules are not met, the terminal is not allowed or supported to perform multi-cast cell/frequency point preferential residence or set as the reselected highest priority frequency point.

When the terminal does not allow or support the terminal to perform multi cast cell/frequency point preferential residence or set to reselect the highest priority frequency point according to the network side indication or default rule, the actions of the terminal may include: when the traditional redirection information and/or the cell reselection priority information indicated by the special signaling exist, the terminal follows the redirection or cell reselection priority behavior, and when the traditional redirection information and/or the cell reselection priority information indicated by the special signaling do not exist, the terminal follows the related information in the common signaling SIB to carry out the related resident cell selection and reselection process of the existing cell reselection.

When the terminal resides in a non-multicast cell/frequency point according to the protocol convention, the terminal receives multicast service as simultaneously as possible. If the multi-cast service receiving is not carried out at the same time, the multi-cast service receiving can be abandoned temporarily, or until the configured or default timer is overtime or invalid, the terminal returns to the Connected state again to request the multi-cast service to be continuously received to the network, or the terminal carries out cell reselection evaluation again, so that the requirement of receiving the multi-cast service at the same time is met as much as possible.

As an optional implementation manner, after the terminal camps on the first cell in the inactive state and receives the first multicast service, the method further includes:

And performing RRC connection recovery in case that it is determined that the first multicast service cannot be received.

The failure to receive the first multicast service may be that the terminal fails to continue to receive the first multicast service. In addition, the terminal can not receive the first multicast service, which can be caused by terminal cell selection or reselection, or can be caused by terminal monitoring or measurement.

In this embodiment, the connection state may be entered through the RRC connection recovery described above so as to continue to receive the first multicast service, so as to improve the multicast service receiving performance.

In some embodiments, the first cell is a multicast service cell that sends the first multicast service, the terminal resides in the first cell in an inactive state, and after receiving the first multicast service, the method further includes:

performing cell selection or cell reselection, camping on a second cell;

receiving the first multicast service in case that the second cell is resident and can receive the first multicast service;

wherein the inability to receive the first multicast service includes:

determining that the first multicast service cannot be received before performing cell selection or cell reselection; or alternatively

In the case of camping on a second cell, it is determined that the first multicast service cannot be received.

In this embodiment, performing the RRC connection recovery may be performing the RRC connection recovery at the second cell.

In this embodiment, when the second cell is camping and is able to receive the first multicast service, the first multicast service may be received, but when it is determined that the first multicast service cannot be received before cell selection or cell reselection is performed, RRC connection recovery is performed, or when it is determined that the first multicast service cannot be received when the second cell is camping, RRC connection recovery is performed.

In some embodiments, the terminal is unable to receive the first multicast service if at least one of:

the terminal resides in the second cell;

the second cell does not belong to a first area, and the first area is an effective area of the first multicast service;

the measurement result aiming at the multicast channel or the multicast signal is matched with a first preset value, wherein the first preset value indicates that the first multicast service cannot be received;

and the receiving effect evaluation result of the first multicast service is matched with a second preset value, wherein the second preset value indicates that the first multicast service cannot be received.

The terminal camping on the second cell may be that the terminal camps on a cell other than the first cell, and the terminal cannot receive the first multicast service.

The second cell does not belong to the first area, and the terminal may reside in the second cell, and if the second cell does not belong to the first area, the terminal cannot receive the first multicast service.

The first cell may be represented by a Tracking Area (TA) list or by a cell list.

The first preset value and the second preset value may be values defined by a protocol or values configured by a network side.

The measurement results may be measurement results of reference Signal received power (reference Signal received power, RSRP), signal-to-Noise Ratio (SNR), reference Signal received quality (Reference Signal Receiving Quality, RSRQ), and the like.

The measurement result is matched with a first preset value, and the first preset value indicates that the first multicast service cannot be received, or the measurement result is lower than the first preset value, that is, indicates that the first multicast service cannot be received.

The receiving effect evaluation result of the first multicast service may be receiving quality information of the first multicast service, such as decoding failure rate, decoding success rate, block error rate, number of continuous decoding failure data blocks, probability of receiving failure within a certain period of time, and the like.

The receiving parameter is matched with a second preset value, where the second preset value indicates that the first multicast service cannot be received, and the decoding failure rate is higher than the second preset value, that is, the first multicast service cannot be received, or the block error probability is higher than the second preset value, that is, the first multicast service cannot be received, and the like. It should be noted that, for different receiving parameters, the values of the second preset values may be different.

It should be noted that, when the measurement result does not match the first preset value, the terminal may receive the first multicast service; and when the receiving effect evaluation result is not matched with the second preset value, the terminal can receive the first multicast service.

In this embodiment, it may be implemented to determine whether the terminal cannot receive the first multicast service through multiple dimensions.

One example is as follows:

this embodiment mainly describes mobility of terminals camping on a Multicast cell, and in the above embodiments and implementations, a control manner of camping on a network side or a default mechanism for an active terminal receiving a Multicast service and/or cell reselection is given. According to these approaches, one terminal may reside in a multicast cell for multicast service reception. The present embodiment gives some mobility and continuous multicast traffic reception considerations regarding this situation. The method can be concretely as follows:

When the terminal resides in the multicast cell for multicast service reception, as the terminal moves, the terminal needs to perform normal Idle/Inactive mobility evaluation, for example, a cell reselection process, and also needs to perform a certain guarantee mechanism on the receiving effect of the multicast service and continuous reception, and may have at least one of the following:

the multicast reception of the terminal is considered to also follow or reuse the guarantee of the cell selection/reselection mechanism, that is, when the terminal resides in the multicast cell, the terminal is considered to be capable of continuing to receive the multicast service, when the terminal no longer satisfies the conditions of residing in the multicast cell, that is, the terminal has cell selection/reselection, and is considered to be incapable of continuing to receive the multicast service when the terminal resides in other cells again, the terminal can trigger a new mechanism to continue to receive the multicast service;

if the multicast service reception or the service related configuration indicates that the multicast service reception is valid only in the current multicast cell, the terminal means that the multicast service configuration information is not valid again once reselecting other cells, the terminal cannot use the existing configuration information to continue the multicast service reception in the new cell, the terminal immediately resumes the RRC connection, enters a connection state, and requests the new configuration information from the network side or continues the multicast service reception in the new mode;

If the multicast service is received or the service related configuration is displayed, a certain effective area is indicated by the display mode, for example, a TA list or a cell list, whether the new resident cell can continue to use the original configuration to receive the multicast service is judged according to whether the new resident cell is in the effective area, if so, the multicast service is continuously received, if not, the terminal can immediately perform RRC connection recovery, enter a connection state, request new configuration information from the network side or continuously perform the multicast service reception in a new mode.

In addition, besides the cell selection/reselection mechanism, the terminal may perform an additional monitoring or measurement mechanism for multicast reception, that is, the evaluation of cell selection/reselection of the terminal and whether the terminal can continue to receive multicast service in the multicast cell are evaluated independently, for example: the determination is made with different measured or evaluated conditions/thresholds, respectively, etc.

The method can be concretely as follows:

the evaluation and operation of UE cell selection/reselection may be performed using existing mechanisms;

the service reception of the Multicast cell may be configured or defaulted with new conditions, for example, a corresponding threshold judgment is performed for RSRP measurement of a Multicast channel or a Multicast signal, the threshold may be a threshold consistent with residence/reselection or a separate threshold to judge whether Multicast reception may continue or not, or an independent threshold judgment is performed for unicast RSRP, that is, although the trigger of cell reselection is the same cell common reference signal measured, a different threshold may be configured, one threshold is used for cell reselection judgment, and the other independent threshold is used for judging whether Multicast reception continues or not;

The Multicast service of the Multicast cell can also be received by adopting the condition other than the RSRP threshold to judge, for example, the decoding failure rate of the Multicast service is higher than the threshold, or the success rate is lower than the threshold, or the block error probability is higher than the threshold, or the continuous decoding fails to N data blocks, and the receiving failure probability is higher than the threshold or the success rate is lower than the threshold in a continuous certain time period/window, so that the Multicast receiving can be judged to be unable to continue when any condition is not met due to the Multicast service reception;

when the multicast reception cannot be continued, the terminal may immediately perform RRC connection recovery, enter a connected state, request new configuration information to the network side or continue to perform multicast service reception in a new manner;

the multicast reception of the terminal cannot continue, and can occur before or after the multicast cell is reselected to other cells;

if the multicast reception or the multicast configuration is valid in a certain area, the terminal can continuously perform the multicast reception in the area until the terminal moves out of the area, the condition that the multicast reception cannot be continuously performed is triggered to be met, the terminal triggers the state change, and the terminal enters the connection state to request a new configuration or a new receiving mode from the network side.

In some embodiments, the first cell is a cell that does not send the first multicast service, the terminal resides in the first cell in an inactive state, and after receiving the first multicast service, the method further includes:

and executing cell selection or cell reselection in the first cell, and residing in a second cell.

In this embodiment, before or after the second cell is camped, it is determined whether the terminal cannot receive the first multicast service, and if it is determined that the terminal cannot receive the first multicast service, RRC connection recovery is performed, and if the second cell is camped on and can receive the first multicast service, the terminal receives the first multicast service to improve the effect of receiving the multicast service by the terminal.

In some embodiments, the first cell is a cell that does not transmit the first multicast service, the method further comprising:

executing a judging operation aiming at a multicast cell transmitting the first multicast service, wherein the judging operation is used for judging whether the first multicast service cannot be received or not;

the inability to receive the first multicast service includes: the result of the determining operation indicates that the first multicast service cannot be received.

The above-mentioned judgment operation may be a judgment after the first cell is camped, and in combination with the embodiment of the second cell is camped, the judgment operation may be a judgment after the second cell is camped, or a judgment before the second cell is camped, which is not limited thereto.

In this embodiment, when the result of the judging operation indicates that the first multicast service cannot be received, RRC connection recovery may be performed, and when the judging operation indicates that the first multicast service can be received, the second cell is camped on, and the first multicast service is received.

In some embodiments, the determining operation determines whether the first multicast service cannot be received based on at least one of:

executing at least one evaluation of residence and cell reselection aiming at a multicast service cell for transmitting the first multicast service, and obtaining an evaluation result;

measurement results of multicast channels or multicast signals;

the receiving effect evaluation result of the first multicast service;

wherein the terminal is unable to receive the first multicast service in at least one of:

the evaluation result indicates that a multicast service cell transmitting the first multicast service does not meet a residence condition;

The measurement result of the multicast channel or the multicast signal is matched with a third preset value, wherein the third preset value indicates that the first multicast service cannot be received;

and the receiving effect evaluation result is matched with a fourth preset value, wherein the fourth preset value indicates that the first multicast service cannot be received.

In this embodiment, if the multicast service cell transmitting the first multicast service satisfies the camping condition, the terminal may receive the first multicast service, thereby camping on the second cell and receiving the multicast service.

The third preset value and the fourth preset value may refer to the first preset value and the second preset value described in the foregoing embodiments, and are not described herein.

One example is as follows:

this embodiment mainly describes mobility of terminals residing in non-Multicast cells, and in the above embodiments and implementations, a control manner of a network or default mechanism for its residing and/or cell reselection of an active terminal receiving Multicast traffic is given. According to these modes, a terminal may also reside in a non-multicast cell for multicast service reception. The present embodiment gives some mobility and continuous multicast traffic reception considerations regarding this situation. The method can be concretely as follows:

When the terminal camps on a non-multicast cell to receive multicast service, along with the movement of the terminal, the terminal needs to perform normal Idle/active mobility evaluation of the camping cell, such as a cell reselection process, and also needs to perform a certain measurement and guarantee mechanism on the cell where the multicast service is located and the multicast continuous reception, which may include at least one of the following:

firstly, the terminal operates the resident cell, can completely follow the standardized actions of cell selection and reselection of the Idle/Inactive terminal defined by the protocol, and normally performs the selection and replacement of the resident cell;

second, since the terminal receives multicast service in another multicast cell in addition to the camping cell, the terminal may additionally perform mobility or reception effect evaluation/measurement on the multicast cell by at least one of the following methods:

a set of cell residence and/or reselection judging mechanism is additionally carried out on the multicast cell, namely, the terminal executes double residence/reselection judgment, the real residence cell carries out Idle mobility behavior, the same cell residence/reselection judgment is carried out on the multicast cell, a multiplexing protocol is defined, if the multicast cell residence condition is met, the terminal can continue to carry out multicast service reception, otherwise, the terminal can not continue to receive, the terminal can immediately carry out RRC connection recovery, enter a connection state, request new configuration information or a new mode to a network side and continue to carry out multicast service reception;

The service reception of the Multicast cell may also be configured or defaulted with new conditions, for example, a corresponding threshold judgment is performed for RSRP measurement of a Multicast channel or a Multicast signal, the threshold may be a threshold consistent with residence/reselection or a separate threshold to judge whether Multicast reception may continue or not, or an independent threshold judgment is performed for unicast RSRP, that is, although the trigger of cell reselection is the same cell common reference signal measured, a different threshold may be configured, one threshold is used for cell reselection judgment, and the other independent threshold is used for judging whether Multicast reception continues or not;

the Multicast service reception of the Multicast cell may also be judged by a condition other than the RSRP threshold, for example: the decoding failure rate of the multicast service is higher than the threshold, or the success rate is lower than the threshold, or the block error probability is higher than the threshold, or the continuous decoding fails to N data blocks, and when the receiving failure probability in a continuous certain time period/window is higher than the threshold, or the success rate is lower than the threshold, and the like, any condition that the receiving of the multicast service cannot be met can be judged to be unable to continue.

The multicast reception of the terminal cannot be continued, and the multicast reception of the terminal can occur before or after the change of the resident cell, and the multicast reception of the terminal and the resident cell can be independently judged.

In addition, according to the embodiment of the application, the residence of the terminal to the multicast cell/frequency point and/or the priority of the cell reselection frequency point can be controlled through the signaling of the network side or the preset rule, so that the system load imbalance caused by centralized residence of a large number of non-active terminals and the influence on the access of other terminals are avoided, the timely and normal receiving of the multicast service by the terminal is ensured, the load balance control of the network is improved on the basis of ensuring the receiving effect, and the normal maintenance of the multicast receiving and other unicast services is ensured.

Referring to fig. 3, fig. 3 is a flowchart of a multicast service receiving method according to an embodiment of the present application, as shown in fig. 3, including the following steps:

301. the method comprises the steps that network side equipment sends network side signaling to a terminal, wherein the network side signaling is used for determining a first cell or a target frequency point by the terminal;

Optionally, the network side signaling includes first indication information, where the first indication information is used to indicate at least one of the following:

Preferentially camping on the first cell;

and the priority of the target frequency point is highest.

Optionally, the network side signaling includes at least one of:

common signaling, dedicated signaling.

Optionally, the first indication information included in the common signaling is valid for all terminals that receive the common signaling; or the first indication information included in the common signaling is effective to a terminal of a first type for receiving the common signaling, wherein the terminal is the terminal of the first type;

and/or the number of the groups of groups,

the first indication information included in the common signaling is valid for the first multicast service.

Optionally, the dedicated signaling is a dedicated signaling issued by a serving cell of the terminal in a connected state.

Optionally, the first indication information is indication information carried in a first information domain of the dedicated signaling, or the first indication information is indication information carried in a second information domain of the dedicated signaling;

wherein the first information field comprises at least one of:

Optionally, in the case that the first indication information is indication information carried in a first information domain of the dedicated signaling:

Optionally, the third indication information is used for indicating that the first information domain is effective for all multicast services; or alternatively

Optionally, in the case that the first indication information is indication information carried in the second information domain of the dedicated signaling:

Optionally, the first cell is a multicast service cell for sending the first multicast service; or alternatively

The first cell is a cell which does not send the first multicast service, and the terminal can receive the first multicast service when the terminal resides in the first cell.

Optionally, in a case that the first cell is a cell that does not send the first multicast service, the network side signaling is configured to determine:

It should be noted that, as an implementation manner of the network side device corresponding to the embodiment shown in fig. 2, a specific implementation manner of the embodiment may refer to a related description of the embodiment shown in fig. 2, so that in order to avoid repeated description, the embodiment is not repeated.

Referring to fig. 4, fig. 4 is a block diagram of a multicast service receiving apparatus according to an embodiment of the present application, and as shown in fig. 4, a multicast service receiving apparatus 400 includes:

A determining module 401, configured to determine a first cell or a target frequency point based on at least one of network side signaling, a preset rule, and terminal capability;

a receiving module 402, configured to camp on the first cell in an inactive state, and receive a first multicast service;

and under the condition that the target frequency point is determined, the first cell where the terminal resides is determined based on the target frequency point.

The multicast service receiving device corresponds to a terminal, or it is understood that the terminal includes the multicast service receiving device.

preferentially camping on the first cell;

and preferentially residing based on the target frequency point.

Optionally, the network side signaling includes at least one of:

common signaling, dedicated signaling.

And/or the number of the groups of groups,

wherein the first information field comprises at least one of:

Optionally, the preset rule is used for indicating that the terminal is preferentially resided in the first cell or the target frequency point.

Optionally, the preset rule includes at least one of the following:

Optionally, the preset rule is effective for all multicast services; or, the preset rule is effective to at least one multicast service, wherein the at least one multicast service comprises the first multicast service; and/or

Optionally, in the case that the first cell is a cell that does not send the first multicast service, the terminal determines based on at least one of network side signaling, a preset rule, and terminal capability:

Optionally, the apparatus further includes:

and the first execution module is used for executing Radio Resource Control (RRC) connection recovery under the condition that the first multicast service cannot be received.

Optionally, the first cell is a multicast service cell for transmitting the first multicast service, and the apparatus further includes:

the second execution module is used for executing cell selection or cell reselection and residing in a second cell;

A receiving module, configured to receive the first multicast service when the second cell is camping and is capable of receiving the first multicast service;

wherein the inability to receive the first multicast service includes:

Optionally, the terminal cannot receive the first multicast service if at least one of:

the terminal resides in the second cell;

Optionally, the first cell is a cell that does not send the first multicast service, and the apparatus further includes:

and the residence module is used for executing cell selection or cell reselection in the first cell and residence the second cell.

a judging module, configured to perform a judging operation for a multicast cell that sends the first multicast service, where the judging operation is used to judge whether the first multicast service cannot be received;

Optionally, the determining operation determines whether the first multicast service cannot be received based on at least one of:

measurement results of multicast channels or multicast signals;

the receiving effect evaluation result of the first multicast service;

The multicast service receiving device can reduce network load.

The multicast service receiving device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the terminals may include, but are not limited to, the types of terminals listed in the embodiments of the present application, and the other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and the embodiments of the present application are not specifically limited.

The multicast service receiving device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 2, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Referring to fig. 5, fig. 5 is a block diagram of a multicast service receiving apparatus according to an embodiment of the present application, and as shown in fig. 5, a multicast service receiving apparatus 500 includes:

a sending module 501, configured to send a network side signaling to a terminal, where the network side signaling is used for the terminal to determine a first cell or a target frequency point;

preferentially camping on the first cell;

and the priority of the target frequency point is highest.

Optionally, the network side signaling includes at least one of:

common signaling, dedicated signaling.

and/or the number of the groups of groups,

Wherein the first information field comprises at least one of:

The multicast service receiving device can reduce network load.

The system information sending device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a network-side device.

The system information sending device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 3, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Optionally, as shown in fig. 6, the embodiment of the present application further provides a communication device 600, including a processor 601 and a memory 602, where the memory 602 stores a program or an instruction that can be executed on the processor 601, for example, when the communication device 600 is a terminal, the program or the instruction is executed by the processor 601 to implement each step of the embodiment of the multicast service receiving method on the terminal side, and the same technical effect can be achieved. When the communication device 600 is a network side device, the program or the instruction, when executed by the processor 601, implements the steps of the embodiment of the method for receiving a multicast service on the network side device, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor or the communication interface is used for determining a first cell or a target frequency point based on at least one of network side signaling, preset rules and terminal capability; the communication interface is further used for residing in the first cell in an inactive state and receiving a first multicast service; wherein, in the case of determining the target frequency point, the first cell in which the terminal resides is determined based on the target frequency point. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 7 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 700 includes, but is not limited to: at least part of the components of the radio frequency unit 701, the network module 702, the audio output unit 703, the input unit 704, the sensor 705, the display unit 706, the user input unit 707, the interface unit 708, the memory 709, and the processor 710.

Those skilled in the art will appreciate that the terminal 700 may further include a power source (e.g., a battery) for powering the various components, and that the power source may be logically coupled to the processor 710 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 7 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in the embodiment of the present application, the input unit 704 may include a graphics processing unit (Graphics Processing Unit, GPU) 7041 and a microphone 7042, and the graphics processing unit 7041 processes image data of still pictures or video obtained by an image capturing apparatus (such as a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, physical keyboards, function keys (e.g., volume control keys, switch keys, etc.), trackballs, mouse pads, levers, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 701 may transmit the downlink data to the processor 710 for processing; in addition, the radio frequency unit 701 may send uplink data to the network side device. Typically, the radio unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 709 may be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 709 may include volatile memory or nonvolatile memory, or the memory 709 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 709 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 710 may include one or more processing units; optionally, processor 710 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modulation and demodulation processor described above may not be integrated into the processor 710.

The processor 710 is configured to determine a first cell or a target frequency point based on at least one of network side signaling, a preset rule, and terminal capability;

the radio frequency unit 701 is configured to reside in the first cell in an inactive state, and receive a first multicast service;

preferentially camping on the first cell;

and preferentially residing based on the target frequency point.

Optionally, the network side signaling includes at least one of:

Common signaling, dedicated signaling.

and/or the number of the groups of groups,

wherein the first information field comprises at least one of:

Optionally, the preset rule includes at least one of the following:

Optionally, after the terminal camps on the first cell in the inactive state and receives the first multicast service, the processor 710 is further configured to:

and executing Radio Resource Control (RRC) connection recovery under the condition that the first multicast service can not be received.

Optionally, the first cell is a multicast service cell that sends the first multicast service, the terminal resides in the first cell in an inactive state, and after receiving the first multicast service, the processor 710 is further configured to:

performing cell selection or cell reselection, camping on a second cell;

the radio frequency unit 701 is further configured to: receiving the first multicast service in case that the second cell is resident and can receive the first multicast service;

wherein the inability to receive the first multicast service includes:

the terminal resides in the second cell;

Optionally, the first cell is a cell that does not send the first multicast service, and after the terminal camps on the first cell in the inactive state and receives the first multicast service, the processor 710 is further configured to:

Optionally, the first cell is a cell that does not send the first multicast service, and the processor 710 is further configured to:

measurement results of multicast channels or multicast signals;

the receiving effect evaluation result of the first multicast service;

The terminal can reduce network load.

The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending network side signaling to a terminal, and the network side signaling is used for determining a first cell or a target frequency point by the terminal; the first cell is a cell where the terminal resides in an inactive state and receives a first multicast service; or the target frequency point is used for the terminal to determine a cell which resides in an inactive state and receives the first multicast service. The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 8, the network side device 800 includes: an antenna 801, a radio frequency device 802, a baseband device 803, a processor 804, and a memory 805. The antenna 801 is connected to a radio frequency device 802. In the uplink direction, the radio frequency device 802 receives information via the antenna 801, and transmits the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes information to be transmitted, and transmits the processed information to the radio frequency device 802, and the radio frequency device 802 processes the received information and transmits the processed information through the antenna 801.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 803, where the baseband apparatus 803 includes a baseband processor.

The baseband device 803 may, for example, comprise at least one baseband board on which a plurality of chips are disposed, as shown in fig. 8, where one chip, for example, a baseband processor, is connected to the memory 805 through a bus interface, so as to invoke a program in the memory 805 to perform the network device operation shown in the above method embodiment.

The network side device may also include a network interface 806, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 800 of the embodiment of the present invention further includes: instructions or programs stored in the memory 805 and executable on the processor 804, the processor 804 invokes the instructions or programs in the memory 805 to perform the methods performed by the modules shown in fig. 5 and achieve the same technical effects, and are not described herein in detail to avoid repetition.

The radio frequency device 802 is configured to send a network side signaling to a terminal, where the network side signaling is used for the terminal to determine a first cell or a target frequency point;

preferentially camping on the first cell;

and the priority of the target frequency point is highest.

Optionally, the network side signaling includes at least one of:

common signaling, dedicated signaling.

And/or the number of the groups of groups,

wherein the first information field comprises at least one of:

The network side equipment can reduce network load.

The embodiment of the application also provides a readable storage medium, and the readable storage medium stores a program or instructions thereon, which when executed by a processor, implement the steps of the multicast service receiving method provided in the embodiment of the application.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction, implement each process of the above embodiment of the multicast service receiving method, and achieve the same technical effect, so that repetition is avoided, and no further description is given here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the embodiments of the multicast service receiving method, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated herein.

The embodiment of the application also provides a frequency domain resource determining system, which comprises: the terminal can be used for executing the steps of the multicast service receiving method at the terminal side provided by the embodiment of the application, and the network side device can be used for executing the steps of the multicast service receiving method at the network side provided by the embodiment of the application.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in part in the form of a computer software product stored on a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and including instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the methods described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative, not restrictive, and many modifications may be made by one of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which fall within the protection of the present application.

Claims

1. A method for receiving multicast service, comprising:

2. The method of claim 1, wherein the network side signaling comprises first indication information indicating at least one of:

preferentially camping on the first cell;

and preferentially residing based on the target frequency point.

3. The method of claim 2, wherein the network side signaling comprises at least one of:

common signaling, dedicated signaling.

4. The method of claim 3, wherein the common signaling includes the first indication information valid for all terminals receiving the common signaling; or the first indication information included in the common signaling is effective to a terminal of a first type for receiving the common signaling, wherein the terminal is the terminal of the first type;

And/or the number of the groups of groups,

5. A method according to claim 3, characterized in that the dedicated signalling is dedicated signalling issued by the serving cell of the terminal in the connected state.

6. The method of claim 3, wherein the first indication information is an indication information carried by a first information field of the dedicated signaling or the first indication information is an indication information carried by a second information field of the dedicated signaling;

wherein the first information field comprises at least one of:

7. The method of claim 6, wherein in the case where the first indication information is indication information carried by a first information field of the dedicated signaling:

8. The method of claim 7, wherein the third indication information is used to indicate that the first information domain is active for all multicast traffic; or alternatively

9. The method of claim 6, wherein in the case where the first indication information is indication information carried by a second information field of the dedicated signaling:

10. The method of claim 1, wherein the preset rule is used to indicate that the terminal is preferentially camping on the first cell or the target frequency point.

11. The method of claim 10, wherein the preset rules include at least one of:

12. The method of claim 10, wherein the preset rule is effective for all multicast traffic; or, the preset rule is effective to at least one multicast service, wherein the at least one multicast service comprises the first multicast service; and/or

13. The method according to any of claims 1 to 12, wherein the first cell is a multicast service cell transmitting the first multicast service; or alternatively

14. The method of claim 13, wherein the terminal determines based on at least one of network side signaling, preset rules, and terminal capabilities in the case that the first cell is a cell that does not transmit the first multicast service:

15. The method according to any one of claims 1 to 12, wherein the terminal camps on the first cell in an inactive state and after receiving a first multicast service, the method further comprises:

16. The method of claim 15, wherein the first cell is a multicast service cell transmitting the first multicast service, the terminal camps on the first cell in an inactive state, and after receiving the first multicast service, the method further comprises:

performing cell selection or cell reselection, camping on a second cell;

wherein the inability to receive the first multicast service includes:

17. The method of claim 16, wherein the terminal is unable to receive the first multicast service if at least one of:

the terminal resides in the second cell;

18. The method of claim 15, wherein the first cell is a cell that does not transmit the first multicast service, the terminal camps on the first cell in an inactive state, and after receiving the first multicast service, the method further comprises:

19. The method of claim 15, wherein the first cell is a cell that does not transmit the first multicast service, the method further comprising:

Executing a judging operation aiming at a multicast cell for transmitting the first multicast service, wherein the judging operation is used for judging whether the first multicast service cannot be received or not;

20. The method of claim 19, wherein the determining operation determines whether the first multicast service cannot be received based on at least one of:

measurement results of multicast channels or multicast signals;

the receiving effect evaluation result of the first multicast service;

21. A method for receiving multicast service, comprising:

22. The method of claim 21, wherein the network side signaling comprises first indication information indicating at least one of:

preferentially camping on the first cell;

and the priority of the target frequency point is highest.

23. The method of claim 22, wherein the network side signaling comprises at least one of:

common signaling, dedicated signaling.

24. The method of claim 23, wherein the common signaling comprises the first indication information valid for all terminals receiving the common signaling; or the first indication information included in the common signaling is effective to a terminal of a first type for receiving the common signaling, wherein the terminal is the terminal of the first type;

And/or the number of the groups of groups,

25. The method of claim 23, wherein the dedicated signaling is dedicated signaling issued by a serving cell of the terminal in a connected state.

26. The method of claim 23, wherein the first indication information is an indication information carried by a first information domain of the dedicated signaling or the first indication information is an indication information carried by a second information domain of the dedicated signaling;

wherein the first information field comprises at least one of:

27. The method of claim 26, wherein, in the case where the first indication information is indication information carried by a first information field of the dedicated signaling:

28. The method of claim 27, wherein the third indication information is used to indicate that the first information domain is active for all multicast traffic; or alternatively

29. The method of claim 26, wherein in the case where the first indication information is indication information carried by a second information field of the dedicated signaling:

30. The method according to any of claims 21 to 29, wherein the first cell is a multicast service cell transmitting the first multicast service; or alternatively

31. The method of claim 30, wherein, in the case where the first cell is a cell that does not transmit the first multicast service, the network side signaling is used to determine:

32. A multicast service receiving apparatus, comprising:

33. A multicast service receiving apparatus, comprising:

34. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the multicast service receiving method according to any of claims 1 to 20.

35. A network side device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the multicast service receiving method according to any of claims 21 to 31.

36. A readable storage medium, wherein a program or instructions is stored on the readable storage medium, which when executed by a processor, implements the steps of the multicast service reception method according to any one of claims 1 to 20, or which when executed by a processor, implements the steps of the multicast service reception method according to any one of claims 21 to 31.