CN114765816A

CN114765816A - Cell reselection method, device, network equipment, terminal equipment, medium and product

Info

Publication number: CN114765816A
Application number: CN202110051084.1A
Authority: CN
Inventors: 周锐; 张大钧; 彦楠
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2022-07-19

Abstract

The application provides a cell reselection method, a cell reselection device, network equipment, terminal equipment, a medium and a product, wherein the method comprises the following steps: receiving a first message sent by network equipment, wherein the first message comprises any one of frequency point or Tracking Area Identification (TAI) information of an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point, or priority information of the adjacent cell on the MBS service, and the adjacent cell is an adjacent cell of a service cell where the terminal equipment is located; a cell reselection policy is determined from the first message. In the application, the network device sends the first message to the terminal device, and the terminal device in the RRC non-connected state can determine the target cell supporting the MBS service that needs to be currently received from the neighboring cell according to any of the above information, so that continuity of the MBS service can be ensured when performing cell reselection.

Description

Cell reselection method, device, network equipment, terminal equipment, medium and product

Technical Field

The present application relates to the field of communications technologies, and in particular, to a cell reselection method, apparatus, network device, terminal device, medium, and product.

Background

Multicast and Broadcast Service (MBS) is one of the important contents for the development of the third generation partnership project (3GPP) Service. Through the MBS service, the network side may simultaneously send data to multiple terminal devices (UEs) in the network in a broadcast or multicast manner, thereby greatly saving air interface resources of the system.

In a New Radio (NR) communication system of the fifth Generation mobile communication technology (5-Generation, 5G), a terminal device generally needs to perform cell reselection to ensure the communication quality of the terminal device.

However, in the process of cell reselection, MBS service interruption is likely to occur due to different cells having different support situations for different MBS services.

Disclosure of Invention

The application provides a cell reselection method, a cell reselection device, network equipment, terminal equipment, a medium and a product, which are used for solving the technical problems in the prior art.

In a first aspect, the present application provides a cell reselection method, which is applied to a terminal device, where the terminal device is in a radio resource control, RRC, non-connected state, and the method includes:

receiving a first message sent by a network device, wherein the first message comprises any one of frequency points or Tracking Area Identification (TAI) information of an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency points, or priority information of the adjacent cell on the MBS service, and the adjacent cell is an adjacent cell of a service cell where a terminal device is located;

And determining a cell reselection strategy according to the first message.

In some embodiments, when the MBS service performed by the terminal device in the serving cell is a local MBS service, the TAI information of the frequency point or the neighboring cell includes: any one of first TAI information of a first type frequency point, second TAI information of a second type frequency point or third TAI information of a neighbor cell of the serving cell;

the first frequency point is the same as a frequency point corresponding to the MBS service performed by the terminal equipment in the service cell, and the second frequency point is different from a frequency point corresponding to the MBS service performed by the terminal equipment in the service cell;

when the first message includes the TAI information of the frequency point or the neighboring cell, the determining a cell reselection policy according to the first message includes:

determining a first target neighbor cell belonging to a local service area from the neighbor cells according to any one of the first TAI information, the second TAI information or the third TAI information, wherein the local service area is a service area corresponding to the local MBS service;

and when cell reselection is carried out, preferentially reselecting the first target neighbor cell.

In some embodiments, at least one of:

The first TAI information comprises a TAI;

the first TAI information comprises at least two TAIs;

the second TAI information comprises a TAI;

the second TAI information comprises at least two TAIs;

the second type of frequency point comprises a frequency point; or

The second type of frequency points comprises at least two different frequency points.

In some embodiments, the information indicating the deployment intensity of the MBS service on the frequency point includes: first deployment intensity indicating information of a first type MBS service and/or second deployment intensity indicating information of a second type MBS service;

the first-class MBS service is an MBS service supported by a first-class frequency point, and the first-class frequency point is the same as a frequency point corresponding to the MBS service performed by the terminal equipment in the service cell; the second type of MBS service is an MBS service supported by a second type of frequency point, and the second type of frequency point is different from the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell;

when the first message includes the indication information of the deployment intensity of the MBS service on the frequency point, the determining a cell reselection policy according to the first message includes:

determining a first target MBS service with the deployment intensity meeting preset requirements from the first type MBS service and/or the second type MBS service according to the first deployment intensity indicating information and/or the second deployment intensity indicating information;

Determining a frequency point corresponding to the first target MBS service as a first target frequency point;

and when the cell reselection is carried out, preferentially reselecting the cell on the first target frequency point.

In some embodiments, at least one of:

the first MBS service comprises at least two different MBS services;

the second MBS service comprises at least two different MBS services;

the second type of frequency point comprises a frequency point; or

In some embodiments, the indication information of the deployment intensity of the MBS service on the frequency point includes: third deployment intensity indicating information of a third type MBS service on a frequency point of a service cell;

and if the deployment intensity of the third type MBS service is determined to meet the preset requirement according to the third deployment intensity indication information, preferentially reselecting the cell on the frequency point of the serving cell when the cell is reselected.

In some embodiments, when the deployment intensity reaches a preset threshold, it is determined that the deployment intensity satisfies the preset requirement.

In some embodiments, the priority information of the neighboring cell on the MBS service includes: the MBS service supported by the adjacent cell and the priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell;

when the first message includes the priority information of the neighboring cell on the MBS service, the determining the cell reselection strategy according to the first message includes:

according to the MBS service supported by the adjacent cell and the priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell, determining a second target adjacent cell with the highest priority for supporting the MBS service performed by the terminal equipment in the service cell from the adjacent cell;

and when the cell reselection is carried out, preferentially reselecting the second target neighbor cell.

In a second aspect, the present application provides a cell reselection method, applied to a network device, the method including:

acquiring any one of tracking area identification TAI information of a frequency point or an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point, or priority information of the adjacent cell on the MBS service, wherein the adjacent cell is the adjacent cell of a service cell where terminal equipment is located;

Sending a first message to a terminal device in an RRC non-connected state, wherein the first message comprises any one of frequency point or Tracking Area Identification (TAI) information of an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point, or priority information of the adjacent cell on the MBS service, and the first message is used for indicating the terminal device to determine a cell reselection strategy according to the first message.

In some embodiments, acquiring TAI information of a frequency point or a neighboring cell includes:

acquiring any one of first TAI information of a first type frequency point, second TAI information of a second type frequency point or third TAI information of a neighbor cell of the serving cell;

the first frequency point is the same as the frequency point corresponding to the MBS service of the terminal equipment in the service cell, and the second frequency point is different from the frequency point corresponding to the MBS service of the terminal equipment in the service cell.

In some embodiments, at least one of:

the first TAI information comprises a TAI;

the first TAI information comprises at least two TAIs;

the second TAI information includes a TAI;

the second TAI information comprises at least two TAIs;

the second type of frequency point comprises a frequency point; or

In some embodiments, obtaining the deployment intensity indication information of the MBS service on the frequency point includes:

acquiring first deployment intensity indicating information of a first type of MBS service and/or second deployment intensity indicating information of a second type of MBS service;

the first-class MBS service is an MBS service supported by a first-class frequency point, and the first-class frequency point is the same as a frequency point corresponding to the MBS service performed by the terminal equipment in a service cell; the second type of MBS service is the MBS service supported by the second type of frequency point, and the second type of frequency point is different from the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell.

In some embodiments, at least one of:

the first MBS service comprises at least two different MBS services;

the second MBS service comprises at least two different MBS services;

the second type of frequency point comprises a frequency point; or

and acquiring third deployment intensity indication information of the third type MBS service on the frequency point of the serving cell.

In some embodiments, acquiring the priority information of the neighboring cell on the MBS service includes:

and acquiring the MBS service supported by the adjacent cell of the service cell and the priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell.

In some embodiments, the sending mode of the first message includes:

sending through system information; or

And sending the control message through the MBS control information in the MBS control channel.

In a third aspect, the present application provides a terminal device, including a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

receiving a first message sent by a network device, wherein the first message comprises any one of frequency point or Tracking Area Identification (TAI) information of an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point, or priority information of the adjacent cell on the MBS service;

and determining a cell reselection strategy according to the first message.

In a fourth aspect, the present application provides a network device, comprising a memory, a transceiver, a processor:

A memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

In a fifth aspect, the present application provides a cell reselection apparatus, applied to a terminal device, where the apparatus includes:

a message receiving unit, configured to receive a first message sent by a network device, where the first message includes any one of frequency point or tracking area identifier TAI information of an adjacent cell, deployment intensity indication information of a multicast broadcast service MBS on the frequency point, or priority information of the adjacent cell on the MBS service;

And the strategy determining unit is used for determining a cell reselection strategy according to the first message.

In a sixth aspect, the present application provides a cell reselection apparatus, applied to a network device, the apparatus including:

an information obtaining unit, configured to obtain any one of frequency point or tracking area identifier TAI information of an adjacent cell, deployment intensity indication information of a multicast broadcast service MBS on the frequency point, or priority information of the adjacent cell on the MBS service, where the adjacent cell is an adjacent cell of a serving cell where a terminal device is located;

a message sending unit, configured to send a first message to a terminal device in an RRC non-connected state, where the first message includes any one of tracking area identifier TAI information of a frequency point or an adjacent cell, deployment intensity indication information of a multicast broadcast service MBS on the frequency point, or priority information of the adjacent cell on the MBS service, and the first message is used to indicate the terminal device to determine a cell reselection policy according to the first message.

In a seventh aspect, the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-executable instructions are used to implement the cell reselection method described above.

In an eighth aspect, the present application provides a computer program product comprising a computer program which, when executed by a processor, implements the cell reselection method described above.

The application provides a cell reselection method, a cell reselection device, network equipment, terminal equipment, a medium and a product, wherein the method comprises the following steps: receiving a first message sent by network equipment, wherein the first message comprises any one of frequency point or Tracking Area Identification (TAI) information of an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point, or priority information of the adjacent cell on the MBS service, and the adjacent cell is an adjacent cell of a service cell where the terminal equipment is located; a cell reselection policy is determined from the first message. In the application, the network device sends a first message including any one of Tracking Area Identification (TAI) information of a frequency point or an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point, or priority information of the adjacent cell on the MBS service to the terminal device, and the terminal device in an RRC non-connected state can determine a target cell supporting the MBS service which needs to be received currently from the adjacent cell according to any one of the information, so that the continuity of the MBS service can be ensured when the cell is reselected.

It should be understood that what is described in the summary above is not intended to limit key or critical features of embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a schematic diagram of MBS service deployment according to frequency points;

fig. 2 is a schematic diagram of MBS service deployed by cell;

fig. 3 is a schematic diagram of a cell reselection method applied to a terminal device according to an embodiment of the present application;

fig. 4 is a timing diagram illustrating information interaction between a terminal device and a network device in the embodiment of the present application;

fig. 5 is another timing diagram illustrating information interaction between a terminal device and a network device according to an embodiment of the present disclosure;

fig. 6 is another timing diagram illustrating information interaction between a terminal device and a network device according to an embodiment of the present application;

Fig. 7 is another timing diagram illustrating information interaction between a terminal device and a network device according to an embodiment of the present application;

fig. 8 is a schematic diagram of a cell reselection method applied to a network device according to an embodiment of the present application;

fig. 9 is a schematic diagram of a terminal device in an embodiment of the present application;

FIG. 10 is a schematic diagram of a network device in an embodiment of the present application;

fig. 11 is a schematic diagram of a cell reselection apparatus applied to a terminal device in an embodiment of the present application;

fig. 12 is a schematic diagram of a cell reselection apparatus applied to a network device in this embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (a stated condition or event)" may be interpreted as "upon determining" or "in response to determining" or "upon detecting (a stated condition or event)" or "in response to detecting (a stated condition or event)", depending on the context.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or system in which the element is included.

The technical scheme provided by the embodiment of the application can be suitable for various systems, especially 5G systems. For example, the applicable System may be a Global System For Mobile Communication (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (General Packet Radio Service, GPRS) System, a Long Term Evolution (Long Term Evolution, LTE) System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD) System, a Long Term Evolution (Long Term Evolution, LTE-a) System, a Universal Mobile telecommunications System (Universal Mobile telecommunications System, UMTS), a Universal internet Access (Microwave Access, New Radio Network (NR) System, etc., a Global System Of Mobile Communication (GSM) System, a Code Division Multiple Access (CDMA) System, a WCDMA System, a Radio Access (LTE-a) System, a Radio Access (NR) System, a Radio network (NR 5) System, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

The terminal device referred to in the embodiments of the present application may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be referred to as a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, e.g., a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange language and/or data with the Radio Access Network. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. The wireless Terminal Device may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal Device (Remote Terminal), an Access Terminal Device (Access Terminal), a User Terminal Device (User Terminal), a User Agent (User Agent), and a User Device (User Device), which are not limited in this embodiment of the present application.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for serving a terminal. A base station may also be called an access point, or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames and Internet Protocol (IP) packets with one another as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communications network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System For Mobile Communications (GSM) or Code Division Multiple Access (CDMA), a network device (Node B) in a Wideband Code Division Multiple Access (WCDMA), a Evolved network device (Gnb) in a Long Term Evolution (Long Term Evolution, LTE) System, a 5G Base Station (Gnb) in a 5G network architecture (Next Generation System), a Home Evolved Node B (Home Evolved Node B, Henb), a Relay Node (Relay Node), a Home Base Station (Femto), a Pico Base Station (Pico), and the like, which are not limited in the embodiments of the present application. In some network architectures, network devices may include Centralized Unit (CU) nodes and Distributed Unit (DU) nodes, which may also be geographically separated.

In the NR technology, there are two deployment scenarios for MBS services, including a per-cell deployment scenario and a local MBS service (local MBS service) scenario.

For the deployment scenario by cell, the following two cases can be classified:

deployment scenario 1: and deploying according to frequency points, namely deploying all cells of a certain MBS service on a certain frequency point.

For example, fig. 1 is a schematic diagram of MBS service deployment according to frequency points, and as shown in fig. 1, cells on a certain frequency point include Cell 1-Cell 7, and then a certain MBS service may be deployed on 7 cells of the frequency point.

Deployment scenario 2: the MBS service is deployed according to cells, that is, only some cells on a certain frequency point are deployed for a certain MBS service, the number of deployed cells may be 1 or more, and the number of deployed cells may be determined according to whether wireless resources are sufficient, service characteristics, and other factors.

For example, fig. 2 is a schematic diagram of MBS service deployed according to cells, as shown in fig. 2, a Cell on a certain frequency point includes cells 1 to cells 7, and then a certain MBS service may be deployed only on a part of cells of the frequency point, for example, only on

cells

1, 3, and 5 (the deployed cells are represented by thick lines), and other cells are not deployed.

In addition, for a local MBS service scenario, certain types of MBS services, such as V2X (vehicle to electronic communication technology), public security, etc., may be deployed only in a specific area, and such services are called local MBS services. A local service area (local service area) corresponding to the local MBS service may include a set of cells, or one or more location areas (TAs), or other areas.

In the cell reselection process of a terminal device in a radio resource control RRC non-connected state (RRC idle state or RRC non-activated state), in order to ensure the continuity of the MBS service, it needs to know whether the terminal device supports the MBS service that needs to be currently received before reselecting a target cell. If the reselected target cell does not support the current MBS service to be received, the MBS service may be interrupted.

For a scenario deployed according to a frequency point, the existing LTE technology already supports a terminal device to obtain a User Service Description (USD) through an application layer, and configures an identifier (TMGI, temporary mobile group identifier) of each MBS service, a frequency point and service area identifier list (SAI list) thereof in the USD, and meanwhile, an access network indicates a service area identifier list on other frequency points near a service cell in System Information (SIB15, System Information Block).

The terminal equipment judges whether the MBS service required to be received is supported on a certain configured frequency point according to the USD and the SIB15 acquired from the network side, and then reselects the cell on the frequency point so as to realize the continuous receiving of the MBS service in the cell reselection process.

Meanwhile, the terminal device can also set the priority of the frequency point supporting the MBS service which needs to be received as the highest priority, and the terminal device preferentially selects the cell which is in accordance with the reselection criterion on the frequency point in the cell reselection.

In the above-described prior art, only the scenario of deployment according to the frequency point is considered, that is, the terminal device can only determine whether a certain frequency point supports a certain MBS service through the USD and the SIB 15.

However, in the NR technology, when MBS services are deployed according to cells, the prior art cannot indicate to a terminal device which cells on a frequency point support which MBS services, and meanwhile, in the prior art, a method that the terminal device always sets a frequency point of a cell supporting the MBS service to be received as a highest priority frequency during cell reselection will cause the terminal device to be unable to timely reselect to a cell actually supporting the MBS service to be received, thereby causing service interruption.

For a local MBS service scenario, a local service area of a local MBS service may be provided to the terminal device through the non-access layer, and to ensure the continuity of the local MBS service, the terminal device needs to determine whether a cell is in the local service area before residing in the cell during cell reselection.

By using the prior art, the terminal device may obtain a TAI (Tracking Area identity) of the target cell by reading system information (SIB1) of the target cell, and further determine whether the target cell is in the local service Area.

However, for the MBS service of the local MBS service type, the method for determining whether the cell is in the local service area by using the prior art requires the terminal device to read the system information (SIB1) of the target cell, which means that for the cell not in the local service area, the terminal device needs to perform measurement on such cell, evaluate cell reselection, and read the system information without knowing, before determining that the cell is not in the local service area. This may result in that the terminal device cannot timely reselect to other cells belonging to the local service area, thereby causing a service interruption. In addition, the process of measuring and reading system information for cells not in the local service area will result in unnecessary power consumption of the terminal device.

The cell reselection method, device, network equipment, terminal equipment, medium and product provided by the application aim to solve the above technical problems in the prior art.

In the technical scheme of the application, the network device sends a first message including any one of frequency point or tracking area identification TAI information of an adjacent cell, deployment intensity indication information of a multicast broadcast service MBS on the frequency point, or priority information of the adjacent cell on the MBS service to the terminal device, and the terminal device in an RRC non-connection state can determine a target cell supporting the MBS service which needs to be received currently from the adjacent cell according to any one of the information, so that the continuity of the MBS service can be ensured when the cell is reselected.

The following describes the technical solution of the present application and how to solve the above technical problems in detail by specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

In some embodiments, a cell reselection method is provided, which is applied to a terminal device, where the terminal device is in a radio resource control, RRC, non-connected state.

Fig. 3 is a schematic diagram of a cell reselection method according to an embodiment of the present application, and as shown in fig. 3, the method mainly includes the following steps:

s100, receiving a first message sent by a network device, wherein the first message comprises any one of frequency points or Tracking Area Identification (TAI) information of an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency points, or priority information of the adjacent cell on the MBS service, and the adjacent cell is an adjacent cell of a service cell where a terminal device is located;

and S200, determining a cell reselection strategy according to the first message.

The network device may be an access network device, that is, an NG-RAN node, and specifically, the serving cell of the terminal device may send the first message to the terminal device.

The first message may be tracking area identity TAI information including a frequency point or a neighboring cell, and after receiving the first message sent by the network device, the terminal device may determine, according to the TAI information in the first message, a neighboring cell belonging to the local service area in a cell reselection process, and for an MBS service of the local MBS service type, the terminal device may determine, according to the neighboring cell belonging to the local service area, a target cell for reselection, thereby ensuring continuity of the MBS service.

The first message may also be deployment intensity indication information of a multicast broadcast service MBS on the frequency point, and after receiving the first message sent by the network device, the terminal device may determine whether the MBS service belongs to an intensive deployment (deploys according to the frequency point or deploys most cells on the frequency point) according to the deployment intensity indication information of the MBS service in the process of cell reselection, so that the priority of the frequency point may be set according to the deployment intensity of the MBS service, and the continuity of the MBS service is ensured.

The first message may also include priority information of neighboring cells on the MBS service, after receiving the first message sent by the network device, the terminal device may determine, according to the priority information of the neighboring cells on the MBS service, the priorities of the MBS service currently required to be received in different neighboring cells during the cell reselection process, and then rank the neighboring cells according to the order of the priorities of the MBS service in different neighboring cells, thereby determining the priority of reselecting each neighboring cell and ensuring the continuity of the MBS service.

Therefore, after the terminal device determines the cell reselection strategy according to the first message, when the cell reselection is performed according to the cell reselection strategy, the reselected target cell can be ensured to still support the MBS service which the terminal device currently needs to receive, and the condition that the MBS service is interrupted by the terminal device is avoided.

The present embodiment provides a cell reselection method, where a network device sends a first message including any one of tracking area identifier TAI information of a frequency point or an adjacent cell, deployment intensity indication information of a multicast broadcast service MBS on the frequency point, or priority information of the adjacent cell on the MBS service to a terminal device, and the terminal device in an RRC non-connected state may determine, according to any one of the information, a target cell supporting the MBS service that needs to be currently received from the adjacent cell, so as to ensure continuity of the MBS service when performing cell reselection.

In some embodiments, when the MBS service performed by the terminal device in the serving cell is a local MBS service, the TAI information of the frequency point or the neighboring cell includes: any one of first TAI information of a first type frequency point, second TAI information of a second type frequency point or third TAI information of a neighbor cell of a serving cell; the first frequency point is the same as the frequency point corresponding to the MBS service of the terminal equipment in the service cell, and the second frequency point is different from the frequency point corresponding to the MBS service of the terminal equipment in the service cell.

Specifically, when the current MBS service of the terminal device belongs to the local MBS service, any cell in the local service area corresponding to the local MBS service may be used as a target cell for the terminal device to perform cell reselection, so that the terminal device may determine the cell reselection policy through the TAI information of the frequency point or the neighboring cell.

Optionally, the terminal device may determine the specific type of the current MBS service according to the obtained MBS service information, and based on the SA2 conclusion, the MBS service information may be obtained through NAS (non-access stratum) signaling or an MBS service notification mode. The MBS service information includes a common MBS service or a local MBS service, wherein only the local MBS service includes local service area information of a specific format, and the local service area information may specifically include a local MBS service identifier and a local service area (e.g., TAI list) corresponding to the local MBS service identifier, so that the terminal may determine whether the MBS service belongs to the local MBS service according to whether the MBS service information includes the local service area information. When the MBS service belongs to the local MBS service, the terminal equipment can receive the local MBS service through the service cell in the local service area.

Optionally, the first TAI information may include one TAI, and the first TAI information may also include at least two TAIs; the second TAI information may include a TAI; the second TAI information may also include at least two TAIs; the specific form of the first TAI information and the second TAI information may be a TAI list, and the application does not limit the number of TAIs included in the first TAI information and the second TAI information.

Optionally, the second type of frequency point may include one frequency point, that is, the second type of frequency point only includes one different frequency point different from a frequency point corresponding to the MBS service performed by the terminal device in the serving cell; the second type of frequency point may also include at least two different frequency points, that is, the second type of frequency point includes multiple (for example, 5) different frequency points that are different from the frequency point corresponding to the MBS service performed by the terminal device in the serving cell.

Correspondingly, when the first message includes the TAI information of the frequency point or the neighboring cell, determining a cell reselection strategy according to the first message, including:

s212, according to any one of the first TAI information, the second TAI information or the third TAI information, determining a first target adjacent cell belonging to a local service area from adjacent cells, wherein the local service area is a service area corresponding to a local MBS service;

And S214, when the cell is reselected, preferentially reselecting to the first target neighbor cell.

Specifically, when the TAI information of the frequency point or the neighboring cell includes any one of the first TAI information of the first type of frequency point, the second TAI information of the second type of frequency point, or the third TAI information of the neighboring cell of the serving cell, the terminal device may determine the cell belonging to the local serving area according to the first TAI information, the second TAI information, or the third TAI information, and then determine a first target neighboring cell belonging to the local serving area from the neighboring cells, and may preferentially reselect to the first target neighboring cell when performing cell reselection.

Fig. 4 is a timing diagram illustrating information interaction between a terminal device and a network device in an embodiment of the present application, where a serving cell, a neighboring cell, and a core network all belong to the network device, and as shown in fig. 4, the information interaction between the terminal device and the network device mainly includes the following processes:

(1) the terminal equipment receives the local service area information, and when the local service area information comprises the local MBS service identifier and the TAI list, the terminal equipment determines that the MBS service belongs to the local MBS service.

(2) When the terminal device is in an RRC idle state or an RRC inactive state, the terminal device receives local MBS service data in a serving cell in a local service area.

(3) The serving cell sends an RRC message (i.e. the first message in the foregoing embodiment) to the terminal device, where the RRC message includes TAI information of the frequency point or the neighboring cell, and specifically may include any one of first TAI information of the first type of frequency point, second TAI information of the second type of frequency point, or third TAI information of the neighboring cell of the serving cell.

(4) And the terminal equipment determines a first target adjacent cell belonging to the local service area from the adjacent cells according to any one of the first TAI information, the second TAI information or the third TAI information, and preferentially reselects the first target adjacent cell when performing cell reselection.

(5) After the cell reselection is completed, the terminal equipment continues to receive the local MBS service data in the reselected new cell.

In some embodiments, the indication information of the deployment intensity of the MBS service on the frequency point includes: first deployment intensity indicating information of a first type MBS service and/or second deployment intensity indicating information of a second type MBS service;

the first-class MBS service is an MBS service supported by the first-class frequency point, and the first-class frequency point is the same as the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell; the second type MBS service is the MBS service supported by the second type frequency point, and the second type frequency point is different from the frequency point corresponding to the MBS service carried out by the terminal equipment in the service cell.

Specifically, when the current MBS service of the terminal device does not belong to the local MBS service, that is, when the current MBS service belongs to cell deployment or frequency point deployment, a specific MBS service may be deployed to all cells on a specific frequency point, or most cells or a few cells on a specific frequency point, and the more cells on the corresponding frequency point that the MBS service is deployed, the more intensive the deployment of the MBS service may be considered.

Optionally, the indication information of the deployment intensity of the MBS service on the frequency point may specifically be, for example, the number of cells in which the MBS service is deployed on the frequency point, so that, according to network implementation, a preset threshold of the number of cells may be preset, and if the number of cells in which the MBS service is deployed reaches the preset threshold, the MBS service may be considered to belong to the intensive deployment; if the number of the cells deploying the MBS service does not reach the preset threshold value, the MBS service is considered to belong to non-intensive deployment. Therefore, the terminal equipment can determine the cell reselection strategy according to whether the MBS service belongs to intensive deployment.

Optionally, the first MBS service includes at least two different MBS services, and the second MBS service includes at least two different MBS services, that is, the first MBS service and the second MBS service may refer to multiple services, and the number of MBS services included in the first MBS service and the second MBS service is not limited in the present application.

Optionally, the second type of frequency point may include one frequency point, that is, the second type of frequency point includes only one different frequency point different from a frequency point corresponding to the MBS service performed by the terminal device in the serving cell; the second type of frequency points may also include at least two different frequency points, that is, the second type of frequency points include a plurality of (e.g., 5) different frequency points that are different from the frequency points corresponding to the MBS service performed by the terminal device in the serving cell.

Correspondingly, when the first message includes MBS service deployment intensity indication information on the frequency point, determining a cell reselection strategy according to the first message, including:

s222, determining a first target MBS service with the deployment intensity meeting preset requirements from the first type MBS service and/or the second type MBS service according to the first deployment intensity indicating information and/or the second deployment intensity indicating information;

s224, determining a frequency point corresponding to the first target MBS service as a first target frequency point;

and S226, when the cell is reselected, preferentially reselecting the cell on the first target frequency point.

Optionally, when the deployment intensity of the MBS service reaches the preset threshold, the terminal device determines that the deployment intensity meets the preset requirement, that is, the corresponding MBS service belongs to the intensive deployment.

Specifically, the indication information of the deployment intensity of the MBS services on the frequency points includes the indication information of the first deployment intensity of the first type MBS services, and/or when the second deployment intensity indicating information of the second type MBS service, the terminal equipment can determine the first target MBS service with the deployment intensity meeting the preset requirement from the first type MBS service and/or the second type MBS service according to the first deployment intensity indicating information and/or the second deployment intensity indicating information, that is, it is ensured that the first target MBS service is densely deployed, that is, the number of cells in which the first target MBS service is deployed is large, therefore, the terminal device can determine the frequency point corresponding to the first target MBS service as the first target frequency point, when the cell reselection is carried out, the cell on the first target frequency point is preferentially reselected, so that the continuity of the MBS service of the terminal equipment in the cell reselection process can be ensured.

Optionally, after the terminal device completes cell reselection, the priority of the frequency point where the reselected new cell is located may be set to be the highest, so as to ensure that the terminal device may also ensure the continuity of the MBS service when performing subsequent cell reselection.

Optionally, if the terminal device determines that the deployment intensity of the MBS service does not meet the preset requirement, that is, the corresponding MBS service belongs to non-intensity deployment, the terminal device does not need to preferentially reselect the cell on the frequency point corresponding to the MBS service when performing cell reselection.

Fig. 5 is a timing diagram illustrating information interaction between a terminal device and a network device in an embodiment of the present application, where a serving cell, a neighboring cell, and a core network all belong to the network device, and as shown in fig. 5, the information interaction between the terminal device and the network device mainly includes the following processes:

(1) and when the terminal equipment is in an RRC idle state or an RRC inactive state, the terminal equipment receives MBS service data in a service cell.

(2) The serving cell sends an RRC message (i.e., the first message in the foregoing embodiment) to the terminal device, where the RRC message includes MBS service deployment intensity indication information on the frequency point, and the RRC message specifically includes: the first deployment intensity indicating information of the first MBS service and/or the second deployment intensity indicating information of the second MBS service.

(3) The terminal equipment determines a first target MBS service with the deployment intensity meeting preset requirements from the first type MBS service and/or the second type MBS service according to the first deployment intensity indication information and/or the second deployment intensity indication information; determining a frequency point corresponding to a first target MBS service as a first target frequency point; and when the cell is reselected, preferentially reselecting the cell on the first target frequency point.

(4) After the cell reselection is completed, the terminal equipment continues to receive the MBS service data in the reselected new cell.

In some embodiments, the indication information of the deployment intensity of the MBS service on the frequency point includes: third deployment intensity indicating information of a third MBS service on a frequency point of a service cell;

Optionally, the indication information of the deployment intensity of the MBS service at the frequency point may specifically be, for example, the number of cells in which the MBS service is deployed at the frequency point, so that, according to network implementation, a preset threshold of the number of cells may be preset, and if the number of cells in which the MBS service is deployed reaches the preset threshold, the MBS service may be considered to belong to the intensive deployment; if the number of the cells deploying the MBS service does not reach the preset threshold value, the MBS service can be considered to belong to non-intensive deployment. Therefore, the terminal equipment can determine the cell reselection strategy according to whether the MBS service belongs to intensive deployment.

Optionally, the third MBS service may be a specific MBS service indicated by the network device, that is, the first message includes the TMGI identifier of the third MBS service.

In this embodiment, the indication information of the deployment intensity of the MBS service at the frequency point includes indication information of a third deployment intensity of a third type of MBS service at the frequency point where the serving cell is located, and the terminal device may determine whether the third type of MBS service belongs to the intensive deployment at the frequency point where the serving cell is located according to the indication information of the third deployment intensity, so that the terminal device may determine the cell reselection policy according to whether the MBS service belongs to the intensive deployment.

s232, if the deployment intensity of the third MBS type service is determined to meet the preset requirement according to the third deployment intensity indication information, the cell is preferentially reselected to the cell on the frequency point of the service cell when the cell is reselected.

Optionally, when the deployment intensity of the third type MBS service reaches the preset threshold, the terminal device determines that the deployment intensity meets the preset requirement, that is, it may determine that the third type MBS service belongs to the intensive deployment.

Specifically, when the indication information of the deployment intensity of the MBS service at the frequency point includes the indication information of the third deployment intensity of the third type MBS service at the frequency point where the serving cell is located, the terminal device may determine whether the deployment intensity of the third type MBS service meets the preset requirement according to the indication information of the third deployment intensity, so as to determine whether the third type MBS service belongs to the intensive deployment at the frequency point where the serving cell is located. If the terminal device determines that the third type of MBS service belongs to dense deployment on the frequency point where the serving cell is located, the terminal device may preferentially reselect the cell on the frequency point where the serving cell is located when performing cell reselection, so as to ensure the continuity of the MBS service during cell reselection of the terminal device.

Fig. 6 is a timing diagram illustrating information interaction between a terminal device and a network device in an embodiment of the present application, where a serving cell, a neighboring cell, and a core network all belong to the network device, and as shown in fig. 6, the information interaction between the terminal device and the network device mainly includes the following processes:

(2) The serving cell sends an RRC message (i.e., the first message in the foregoing embodiment) to the terminal device, where the RRC message includes MBS service deployment intensity indication information on the frequency point, and the RRC message specifically includes: and indicating information of third deployment intensity of the third MBS service on the frequency point of the serving cell.

(3) And if the terminal equipment determines that the deployment intensity of the third MBS service meets the preset requirement according to the third deployment intensity indication information, the terminal equipment preferentially reselects the cell on the frequency point of the serving cell when reselecting the cell.

In some embodiments, the priority information of the neighbor cell on the MBS service includes: MBS service supported by the adjacent cell and priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell;

specifically, the network device may set priorities of different MBS services supported by each cell on a corresponding cell supporting the MBS service in combination with factors such as the capability of the base station, the population density, and the like, where the higher the priority of the MBS service is, the higher the support degree of the cell for the MBS service is. Therefore, the terminal device may determine the cell reselection policy according to the priority of the current MBS service on different neighboring cells.

Correspondingly, when the first message includes priority information of the neighboring cell on the MBS service, determining a cell reselection policy according to the first message, including:

s242, according to the MBS service supported by the adjacent cell and the priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell, determining a second target adjacent cell with the highest priority for supporting the MBS service of the terminal equipment in the service cell from the adjacent cell;

S244, when performing cell reselection, preferentially reselecting to a second target neighboring cell.

Specifically, the priority information on the MBS services in the neighboring cells includes the MBS services supported by the neighboring cells and the priority information on the corresponding neighboring cells of the MBS services supported by the neighboring cells, and the terminal device can obtain the priorities of the currently performed MBS services in different neighboring cells, then sequence the neighboring cells according to the order of the priorities of the currently performed MBS services in the neighboring cells, and select the neighboring cell with the highest priority as the second target neighboring cell, thereby ensuring that the cell supporting the currently performed MBS services and having the highest priority of the currently performed MBS services can be preferentially reselected during cell reselection, and thereby ensuring the continuity of the MBS services in the cell reselection process of the terminal device.

Fig. 7 is a timing diagram illustrating information interaction between a terminal device and a network device in an embodiment of the present application, where a serving cell, a neighboring cell, and a core network all belong to the network device, and as shown in fig. 7, the information interaction between the terminal device and the network device mainly includes the following processes:

(2) The serving cell sends an RRC message (i.e., the first message in the foregoing embodiment) to the terminal device, where the RRC message includes priority information of the neighboring cell on the MBS service, and specifically includes: MBS service supported by the adjacent cell and priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell;

(3) the terminal equipment determines a second target adjacent cell which supports the MBS service performed by the terminal equipment in the service cell and has the highest priority from the adjacent cells according to the MBS service supported by the adjacent cells and the priority information of the MBS service supported by the adjacent cells on the corresponding adjacent cells; and when the cell reselection is carried out, preferentially reselecting to a second target neighbor cell.

In some embodiments, a cell reselection method is provided and applied to a network device.

Fig. 8 is a schematic diagram of a cell reselection method according to an embodiment of the present application, and as shown in fig. 8, the method mainly includes the following steps:

s300, acquiring any one of frequency point or tracking area identification TAI information of an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point or priority information of the adjacent cell on the MBS service, wherein the adjacent cell is the adjacent cell of a service cell where terminal equipment is located;

S400, sending a first message to the terminal equipment in the RRC non-connection state, wherein the first message comprises any one of frequency point or Tracking Area Identification (TAI) information of an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point, or priority information of the adjacent cell on the MBS service, and the first message is used for indicating the terminal equipment to determine a cell reselection strategy according to the first message.

In some embodiments, acquiring TAI information of a frequency point or a neighboring cell includes: s310, acquiring any one of first TAI information of a first frequency point, second TAI information of a second frequency point or third TAI information of a neighboring cell of a serving cell; the first frequency point is the same as the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell, and the second frequency point is different from the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell.

s320, acquiring first deployment intensity indicating information of a first MBS service and/or second deployment intensity indicating information of a second MBS service;

the first-class MBS service is an MBS service supported by the first-class frequency point, and the first-class frequency point is the same as the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell; the second type of MBS service is the MBS service supported by the second type of frequency point, and the second type of frequency point is different from the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell.

s330, acquiring third deployment intensity indication information of the third MBS service on the frequency point of the service cell.

s340, acquiring the MBS service supported by the adjacent cell of the service cell and the priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell.

Optionally, when the priority information of the neighboring cell on the MBS service is sent through the first message, the first message may specifically include the following contents:

a) cell identity

b) MBS service list supported by cell

c) Priority of each supported MBS service on the corresponding cell.

In some embodiments, the sending mode of the first message includes: sending through system information; or, the MBS control message is sent through an MBS control channel.

The MBS Control Channel may be, for example, an MCCH (Multicast Control Channel), or other channels.

It should be understood that, although the respective steps in the flowcharts in the above-described embodiments are sequentially shown as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, in different orders, and may be performed alternately or partially with other steps or at least some of the sub-steps or stages of other steps.

In some embodiments, a terminal device is provided, and fig. 9 is a schematic diagram of a terminal device in an embodiment of the present application, and as shown in fig. 9, a terminal device 10 includes a memory 11, a transceiver 12, and a processor 13.

Wherein, the memory 11 is used for storing computer programs; a transceiver 12 for transceiving data under the control of the processor 13; a processor 13 for reading the computer program in the memory 11 and performing the following operations: receiving a first message sent by network equipment, wherein the first message comprises any one of frequency point or Tracking Area Identification (TAI) information of an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point, or priority information of the adjacent cell on the MBS service; a cell reselection policy is determined from the first message.

Optionally, referring to fig. 9, the terminal device further comprises a user interface 14.

In fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 13 and various circuits of memory represented by memory 11 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 12 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like.

The user interface 14 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 13 is responsible for managing the bus architecture and general processing, and the memory 11 may store data used by the processor 13 in performing operations.

The processor 13 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also adopt a multi-core architecture.

The processor is used for executing any method provided by the embodiment of the application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

In some embodiments, the operations further comprise: determining a first target neighbor cell belonging to a local service area from neighbor cells according to any one of the first TAI information, the second TAI information or the third TAI information, wherein the local service area is a service area corresponding to a local MBS service; and when the cell reselection is carried out, preferentially reselecting the first target neighbor cell.

In some embodiments, at least one of:

the first TAI information includes a TAI;

the first TAI information includes at least two TAIs;

the second TAI information includes a TAI;

the second TAI information includes at least two TAIs;

the second type of frequency point comprises a frequency point; or

The frequency points of the second type comprise at least two different frequency points.

In some embodiments, the operations further comprise: determining a first target MBS service with the deployment intensity meeting preset requirements from the first type MBS service and/or the second type MBS service according to the first deployment intensity indicating information and/or the second deployment intensity indicating information; determining a frequency point corresponding to a first target MBS service as a first target frequency point; and when the cell is reselected, preferentially reselecting the cell on the first target frequency point.

In some embodiments, at least one of:

the first MBS service comprises at least two different MBS services;

the second MBS service comprises at least two different MBS services;

the second type of frequency point comprises a frequency point; or

In some embodiments, the operations further comprise: and if the deployment intensity of the third type MBS service is determined to meet the preset requirement according to the third deployment intensity indication information, preferentially reselecting the cell on the frequency point of the serving cell when the cell is reselected.

In some embodiments, when the deployment intensity reaches a preset threshold, it is determined that the deployment intensity meets a preset requirement.

In some embodiments, the operations further comprise: according to the MBS service supported by the adjacent cell and the priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell, determining a second target adjacent cell supporting the MBS service of the terminal equipment in the service cell and having the highest priority from the adjacent cell; and when the cell reselection is carried out, preferentially reselecting the second target neighbor cell.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

In some embodiments, a network device is provided, fig. 10 is a schematic diagram of a network device in an embodiment of the present application, and as shown in fig. 10, the terminal device 20 includes a memory 21, a transceiver 22, a processor 23:

a memory 21 for storing a computer program; a transceiver 22 for transceiving data under the control of the processor 23; a processor 23 for reading the computer program in the memory 21 and performing the following operations: acquiring any one of tracking area identification TAI information of a frequency point or an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point, or priority information of the adjacent cell on the MBS service, wherein the adjacent cell is the adjacent cell of a service cell where terminal equipment is located; and sending a first message to the terminal equipment in the RRC non-connected state, wherein the first message comprises any one of frequency point or Tracking Area Identification (TAI) information of an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point, or priority information of the adjacent cell on the MBS service, and the first message is used for indicating the terminal equipment to determine a cell reselection strategy according to the first message.

In some embodiments, the operations further comprise: acquiring any one of first TAI information of a first type frequency point, second TAI information of a second type frequency point or third TAI information of a neighbor cell of a serving cell;

the first frequency point is the same as the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell, and the second frequency point is different from the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell.

In some embodiments, at least one of:

the first TAI information includes a TAI;

the first TAI information includes at least two TAIs;

the second TAI information includes a TAI;

the second TAI information includes at least two TAIs;

the second type of frequency point comprises a frequency point; or

In some embodiments, the operations further comprise: acquiring first deployment intensity indicating information of a first type of MBS service and/or second deployment intensity indicating information of a second type of MBS service;

In some embodiments, at least one of:

the first MBS service comprises at least two different MBS services;

the second MBS service comprises at least two different MBS services;

the second type of frequency point comprises a frequency point; or

In some embodiments, the operations further comprise: and acquiring third deployment intensity indication information of the third MBS service on the frequency point of the serving cell.

In some embodiments, the operations further comprise: acquiring the MBS service supported by the adjacent cell of the service cell and the priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell.

In some embodiments, the sending mode of the first message includes:

sending through system information; or

And sending through MBS control information in an MBS control channel.

In some embodiments, a cell reselection apparatus is provided and applied to a terminal device, fig. 11 is a schematic diagram of a cell reselection apparatus in an embodiment of the present application, and as shown in fig. 11, a cell reselection apparatus 30 includes:

a message receiving unit 31, configured to receive a first message sent by a network device, where the first message includes any one of frequency point or tracking area identifier TAI information of an adjacent cell, deployment intensity indication information of a multicast broadcast service MBS on the frequency point, or priority information of the adjacent cell on the MBS service;

A policy determining unit 32, configured to determine a cell reselection policy according to the first message.

In some embodiments, the policy determination unit 32 is further configured to: determining a first target neighbor cell belonging to a local service area from neighbor cells according to any one of the first TAI information, the second TAI information or the third TAI information, wherein the local service area is a service area corresponding to a local MBS service; and when the cell reselection is carried out, preferentially reselecting the first target neighbor cell.

In some embodiments, at least one of:

the first TAI information includes a TAI;

the first TAI information includes at least two TAIs;

the second TAI information includes a TAI;

the second TAI information includes at least two TAIs;

the second type of frequency point comprises a frequency point; or

In some embodiments, the policy determination unit 32 is further configured to: determining a first target MBS service with the deployment intensity meeting preset requirements from the first type MBS service and/or the second type MBS service according to the first deployment intensity indication information and/or the second deployment intensity indication information; determining a frequency point corresponding to a first target MBS (multicast broadcast multicast service) as a first target frequency point; when cell reselection is carried out, preferentially reselecting the cell on the first target frequency point.

In some embodiments, at least one of:

the first MBS service comprises at least two different MBS services;

the second MBS service comprises at least two different MBS services;

the second type of frequency point comprises a frequency point; or

In some embodiments, the policy determination unit 32 is further configured to: and if the deployment intensity of the third MBS service is determined to meet the preset requirement according to the third deployment intensity indication information, preferentially reselecting the cell on the frequency point of the serving cell when the cell is reselected.

In some embodiments, the policy determination unit 32 is further configured to: according to the MBS service supported by the adjacent cell and the priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell, determining a second target adjacent cell supporting the MBS service of the terminal equipment in the service cell and having the highest priority from the adjacent cell; and when the cell reselection is carried out, preferentially reselecting the second target neighbor cell.

In some embodiments, a cell reselection apparatus is provided, which is applied to a network device, fig. 12 is a schematic diagram of a cell reselection apparatus in an embodiment of the present application, and as shown in fig. 12, a cell reselection apparatus 40 includes:

An information obtaining unit 41, configured to obtain any one of information about a tracking area identifier TAI of a frequency point or an adjacent cell, deployment intensity indication information of a multicast broadcast service MBS on the frequency point, or priority information of the adjacent cell on the MBS service, where the adjacent cell is an adjacent cell of a serving cell where a terminal device is located;

a message sending unit 42, configured to send a first message to a terminal device in an RRC non-connected state, where the first message includes any one of tracking area identifier TAI information of a frequency point or an adjacent cell, deployment intensity indication information of a multicast broadcast service MBS on the frequency point, or priority information of the adjacent cell on the MBS service, and the first message is used to indicate the terminal device to determine a cell reselection policy according to the first message.

In some embodiments, the information obtaining unit 41 is further configured to: acquiring any one of first TAI information of a first type frequency point, second TAI information of a second type frequency point or third TAI information of a neighbor cell of a serving cell; the first frequency point is the same as the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell, and the second frequency point is different from the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell.

In some embodiments, at least one of:

the first TAI information includes a TAI;

the first TAI information includes at least two TAIs;

the second TAI information includes a TAI;

the second TAI information includes at least two TAIs;

the second type of frequency point comprises a frequency point; or

In some embodiments, the information obtaining unit 41 is further configured to: acquiring first deployment intensity indicating information of a first type MBS service and/or second deployment intensity indicating information of a second type MBS service; the first-class MBS service is an MBS service supported by the first-class frequency point, and the first-class frequency point is the same as the frequency point corresponding to the MBS service performed by the terminal equipment in the service cell; the second type MBS service is the MBS service supported by the second type frequency point, and the second type frequency point is different from the frequency point corresponding to the MBS service carried out by the terminal equipment in the service cell.

In some embodiments, at least one of:

the first MBS service comprises at least two different MBS services;

the second MBS service comprises at least two different MBS services;

the second type of frequency point comprises a frequency point; or

In some embodiments, the information obtaining unit 41 is further configured to: and acquiring third deployment intensity indication information of the third MBS service on the frequency point of the serving cell.

In some embodiments, the information obtaining unit 41 is further configured to: acquiring the MBS service supported by the adjacent cell of the service cell and the priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell.

In some embodiments, the sending mode of the first message includes:

sending through system information; or

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functioning unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a Processor (Processor) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

In some embodiments, a computer-readable storage medium is provided, having stored thereon computer-executable instructions for performing the steps of the method embodiments of the present application when executed by a processor.

The processor-readable storage medium may be any available media or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

In some embodiments, a computer program product is provided, comprising a computer program which, when executed by a processor, performs the steps of the method embodiments of the present application.

In some embodiments, a computer-readable storage medium is provided, in which computer-executable instructions are stored, and when executed by a processor, the computer-executable instructions are used to implement the steps of the upstream data processing method in the embodiments of the present application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A cell reselection method is applied to a terminal device, wherein the terminal device is in a Radio Resource Control (RRC) non-connected state, and the method comprises the following steps:

receiving a first message sent by a network device, wherein the first message comprises any one of frequency point or Tracking Area Identification (TAI) information of an adjacent cell, deployment intensity indication information of a Multicast Broadcast Service (MBS) on the frequency point, or priority information of the adjacent cell on the MBS service, and the adjacent cell is an adjacent cell of a service cell where a terminal device is located;

and determining a cell reselection strategy according to the first message.

2. The method of claim 1, wherein when the MBS service performed in the serving cell by the terminal device is a local MBS service, the TAI information of the frequency point or the neighboring cell includes: any one of first TAI information of a first type frequency point, second TAI information of a second type frequency point or third TAI information of a neighbor cell of the serving cell;

and when the cell reselection is carried out, preferentially reselecting the first target neighbor cell.

3. The method of claim 2, comprising at least one of:

the first TAI information comprises a TAI;

the first TAI information comprises at least two TAIs;

the second TAI information comprises a TAI;

the second TAI information comprises at least two TAIs;

the second type of frequency point comprises a frequency point; or

4. The method of claim 1, wherein the indication information of the deployment intensity of the MBS service on the frequency points comprises: first deployment intensity indicating information of a first type MBS service and/or second deployment intensity indicating information of a second type MBS service;

5. The method of claim 4, comprising at least one of:

the first MBS service comprises at least two different MBS services;

the second MBS service comprises at least two different MBS services;

the second type of frequency point comprises a frequency point; or

6. The method of claim 1, wherein the indication information of the deployment intensity of the MBS service on the frequency points comprises: third deployment intensity indicating information of a third MBS service on a frequency point of a service cell;

and if the deployment intensity of the third MBS service is determined to meet the preset requirement according to the third deployment intensity indication information, preferentially reselecting the cell on the frequency point of the serving cell during cell reselection.

7. The method according to claim 4 or 6, wherein the deployment intensity is determined to meet the preset requirement when the deployment intensity reaches a preset threshold.

8. The method of claim 1, wherein the priority information of the neighboring cells on MBS service comprises: the MBS service supported by the adjacent cell and the priority information of the MBS service supported by the adjacent cell on the corresponding adjacent cell;

9. A cell reselection method applied to a network device, the method comprising:

Sending a first message to a terminal device in an RRC non-connected state, where the first message includes any one of frequency point or tracking area identifier TAI information of a neighboring cell, deployment intensity indication information of a multicast broadcast service MBS on the frequency point, or priority information of the neighboring cell on the MBS service, and the first message is used to indicate the terminal device to determine a cell reselection strategy according to the first message.

10. The method of claim 9, wherein obtaining the TAI information of the frequency point or the neighboring cell comprises:

11. The method of claim 10, comprising at least one of:

the first TAI information comprises a TAI;

the first TAI information comprises at least two TAIs;

the second TAI information comprises a TAI;

The second TAI information comprises at least two TAIs;

the second type of frequency point comprises a frequency point; or

12. The method of claim 9, wherein the obtaining of the indication information of the deployment intensity of the MBS service on the frequency point comprises:

13. The method of claim 12, comprising at least one of:

the first MBS service comprises at least two different MBS services;

the second MBS service comprises at least two different MBS services;

the second type of frequency point comprises a frequency point; or

14. The method of claim 9, wherein obtaining the indication information of the deployment density of the MBS service on the frequency point comprises:

and acquiring third deployment intensity indication information of the third MBS service on the frequency point of the serving cell.

15. The method of claim 9, wherein obtaining the priority information of the neighboring cells on the MBS service comprises:

16. The method according to any one of claims 9-15, wherein the sending of the first message comprises:

sending through system information; or

17. A terminal device, comprising a memory, a transceiver, a processor:

And determining a cell reselection strategy according to the first message.

18. A network device comprising a memory, a transceiver, a processor:

19. A cell reselection apparatus, applied to a terminal device, the apparatus comprising:

20. A cell reselection apparatus, applied to a network device, the apparatus comprising:

21. A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, are configured to implement the cell reselection method of any of claims 1-16.

22. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, is adapted to carry out the cell reselection method of any of the preceding claims 1-16.