WO2023066234A1

WO2023066234A1 - Multicast broadcast service (mbs) receiving method and device, apparatus, and medium

Info

Publication number: WO2023066234A1
Application number: PCT/CN2022/125869
Authority: WO
Inventors: 周锐
Original assignee: 大唐移动通信设备有限公司
Priority date: 2021-10-21
Filing date: 2022-10-18
Publication date: 2023-04-27
Also published as: CN116017710A

Abstract

The present application discloses a multicast broadcast service (MBS) receiving method and device, an apparatus, and a medium, for use in solving the problem of the continuity of an MBS service received by a terminal during the mobile process. The method comprises: receiving a system information block broadcasted by at least one first cell, the system information block carrying position area information of the at least one first cell, and the first cell being an adjacent cell of a serving cell a terminal accesses; determining, according to a service identifier of a predetermined MBS service, the correspondence between a frequency point and the position area information, a service identifier of a target MBS service that the terminal is interested in, and the position area information of each first cell, a candidate cell supporting the target MBS service and a frequency point corresponding to the candidate cell from the at least one first cell; and adjusting the priority of the frequency point corresponding to the candidate cell, and receiving service data of the target MBS service after reselecting to the candidate cell.

Description

Multimedia broadcast service MBS receiving method, equipment, device and medium

Cross References to Related Applications

This application claims priority to a Chinese patent application filed with the China Patent Office on October 21, 2021, with application number 202111229350.1 and titled "Multimedia Broadcasting Service MBS Receiving Method, Device, Device, and Medium", the entire contents of which are incorporated by reference incorporated in this application.

technical field

The present application relates to the technical field of communication, and in particular to a method, device, device and medium for receiving a multimedia broadcasting service (MBS).

Background technique

The 5th generation new radio (5th new radio, 5G NR) system, as a new generation of wireless access technology network, has a demand for multicast/broadcast services, and its multimedia broadcast service (Multicast Broadcast Service, MBS) technology realizes network resources sharing, improving the utilization of network resources.

In the existing single-frequency point deployment scenario, one MBS service corresponds to one frequency point, and one frequency point corresponds to one cell. According to the temporary mobile group identity (Temporary Mobile Group Identity, TMGI) of the target MBS service that the terminal wants to receive, and the corresponding relationship between the TMGI and the frequency point in the user service description (User Service Description, USD) information, it is determined to deploy The frequency point of the target MBS service, and then obtain the service data of the target MBS service through the cell corresponding to the frequency point.

However, when one MBS service corresponds to multiple frequency points, the TMGI of each MBS service in the USD information will also correspond to multiple frequency points. According to the above method, the terminal will determine the multiple frequency points corresponding to the target MBS service. For reselection, the terminal will not be able to determine candidate cells based on multiple frequency points, which will affect the continuity of the target MBS service.

Contents of the invention

The present application provides a method, device, device and medium for receiving a multimedia broadcasting service MBS, which are used to solve the problem of the continuity of a terminal receiving an MBS service during a moving process.

In a first aspect, the present application provides a method for receiving a multimedia broadcast service MBS, which is applied to a terminal, and the method includes:

receiving at least one system information block broadcast by a first cell, where the system information block carries location area information of the first cell, and the first cell is a neighboring cell of the serving cell accessed by the terminal;

From the at least Determining a candidate cell supporting the target MBS service and a frequency point corresponding to the candidate cell in a first cell;

Adjust the priority of the frequency point corresponding to the candidate cell to the highest, and receive the service data of the target MBS service after reselecting to the candidate cell.

In some embodiments, adjusting the priority of the frequency point corresponding to the candidate cell to the highest includes:

If the number of the candidate cells is greater than 1, select a cell from the candidate cells as the target cell for reselection, and adjust the priority of the frequency point corresponding to the target cell to the highest.

In some embodiments, the correspondence between the service identifier, frequency point and location area information of the MBS service determined in the following manner:

According to the first correspondence between the pre-configured frequency point and the location area information, the second correspondence between the obtained service identifier of the MBS service and the frequency point, and the obtained correspondence between the obtained service identifier of the MBS service and the location area information The third corresponding relationship is to obtain the corresponding relationship between the service identifier, the frequency point and the location area information of the MBS service.

In some embodiments, the second corresponding relationship between the service identifier of the MBS service and the frequency points obtained in the following manner, and the third corresponding relationship between the obtained service identifier of the MBS service and location area information:

The USD information is obtained, and the second corresponding relationship between the service identifier of the MBS service and the frequency point, and the third corresponding relationship between the service identifier of the MBS service and the location area information are obtained from the USD information.

In some embodiments, the first correspondence between the preconfigured frequency points and location area information is stored locally in the terminal, or stored in USD information.

In some embodiments, the location area information includes any one of the following information: a service area identity (Service Area Identities, SAI) table, a tracking area identity (Tracking Area Identity, TAI), and a cell identity.

In a second aspect, the present application provides a multimedia broadcast service MBS receiving device, including: a memory, a transceiver, and a processor, wherein:

The memory is used to store computer programs;

The transceiver is used to send and receive data under the control of the processor;

The processor is used to read the computer program in the memory and perform the following operations:

In some embodiments, the processor is specifically configured to:

According to the first correspondence between the pre-configured frequency point and the location area information, the second correspondence between the obtained service identifier of the MBS service and the frequency point, and the obtained correspondence between the service identifier of the MBS service and the location area information The third corresponding relationship is to obtain the corresponding relationship between the service identifier, the frequency point and the location area information of the MBS service.

In some embodiments, the processor is specifically configured to:

In some embodiments, the location area information includes any one of the following information: SAI table, TAI, cell identity.

In a third aspect, the present application provides a multimedia broadcast service MBS receiving device, including:

A receiving unit, configured to receive a system information block broadcast by at least one first cell, where the system information block carries location area information of the first cell, and the first cell is a neighbor of the serving cell accessed by the terminal District;

The determining unit is configured to, according to the pre-determined correspondence between the service identifier of the MBS service, the frequency point and the location area information, the service identifier of the target MBS service that the terminal is interested in, and the location area information of each of the first cells determining, from the at least one first cell, a candidate cell supporting the target MBS service and a frequency point corresponding to the candidate cell;

The receiving unit is configured to adjust the priority of the frequency point corresponding to the candidate cell to the highest, and receive the service data of the target MBS service after reselecting to the candidate cell.

In some embodiments, the determining unit is specifically configured to: if the number of the candidate cells is greater than 1, select a cell from the candidate cells as the target cell for reselection, and set the frequency point corresponding to the target cell to to the highest priority.

In some embodiments, the device further includes an acquisition unit configured to:

In some embodiments, the acquiring unit is specifically used for:

In a fourth aspect, the embodiment of the present application further provides a computer-storable medium, on which a computer program is stored, and when the program is executed by a processor, the steps of any one of the methods described in the first aspect are implemented.

By adopting the above technical solution, the embodiments of the present application at least include the following beneficial effects:

In this embodiment of the application, the terminal can obtain the area location information of the first cell according to at least one system information block broadcast by the first cell, and according to the predetermined correspondence between the service identifier, frequency point and location area information of the MBS service relationship, the service identifier of the target MBS service that the terminal is interested in, and the location area information of each first cell, and determine the candidate cell that supports the target MBS service and the frequency point corresponding to the candidate cell from at least one first cell, in other words, according to the area The corresponding relationship between the location information and the preset can accurately determine the candidate cell supporting the target MBS service and the frequency point corresponding to the candidate cell from at least one first cell, and set the frequency point corresponding to the candidate cell as the highest priority , the terminal reselects to the candidate cell during cell reselection, thereby ensuring the continuity of the terminal receiving multimedia broadcast services during the moving process.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is the application scenario schematic diagram of a kind of multimedia broadcast service MBS receiving method that the embodiment of the application provides;

FIG. 2 is a schematic flow diagram of a method for receiving a multimedia broadcast service MBS provided by an embodiment of the present application;

FIG. 3 is a first schematic diagram of an interaction process between a base station, a terminal, and an AF node provided in an embodiment of the present application;

FIG. 4 is a second schematic diagram of an interaction process between a base station, a terminal, and an AF node provided in an embodiment of the present application;

FIG. 5 is a third schematic diagram of an interaction process between a base station, a terminal, and an AF node provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a multimedia broadcast service MBS receiving device provided in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of an MBS receiving device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the application clearer, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

The terms "first" and "second" in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the term "comprises", as well as any variations thereof, is intended to cover non-exclusive protections. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses. "Multiple" in the present application may mean at least two, for example, two, three or more, which is not limited in this embodiment of the present application.

In order to facilitate the understanding of the technical solutions provided by the embodiments of the present application, the explanations of some terms involved in the embodiments of the present application are explained below:

1. Base station: It is the device in the communication system that connects the terminal device to the wireless network. A base station is a node in a radio access network, and may also be called a base station, and may also be called a radio access network (radio access network, RAN) node (or device). Currently, examples of some base stations are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B , NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (such as home evolved NodeB, or home Node B, HNB), base band unit (base band unit, BBU ), or wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), etc.

2. Terminal: also known as terminal equipment, user equipment (UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), etc., is a device that provides voice and/or data to users Connectivity devices, for example, handheld devices with wireless connectivity, vehicle-mounted devices, etc. At present, examples of some terminals are: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart grid Wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc.

The following describes the continuity mechanism of the Multimedia Broadcast Multicast Service (MBMS) in the long term evolution (long term evolution, LTE) system of the related technology.

The terminal does not need to read the multicast control channel (Multicast Control Channel, MCCH)/single cell multicast control channel (Single Cell-MCCH, SC-MCCH) of the candidate cell, but determines the corresponding frequency point through the combination of MBMS auxiliary information Whether the corresponding MBMS service is provided. MBMS auxiliary information includes USD information and system information block (System Information Block, SIB), wherein, USD information includes the corresponding relationship between each MBMS service and each TMGI, the corresponding relationship between each TMGI and each frequency point, and the session start of each MBMS service Time and session end time, and the corresponding relationship between each MBMS service and each SAI list. The SIB contains auxiliary information supporting MBS UE mobility, specifically including the correspondence between each frequency point and each SAI list.

According to the MBMS auxiliary information, the terminal determines which frequency point provides the desired MBMS service in the following manner.

1. The serving cell broadcasts SIB15.

If the serving cell where the terminal currently resides broadcasts SIB15, the terminal determines which frequency point provides the MBMS service that the terminal wants to receive according to the SIB15 and USD information. For example, the MBMS service that the terminal is interested in is the target MBMS service. The terminal determines the target SAI list corresponding to the target MBMS service according to the correspondence between each MBMS and each SAI list in the USD information. According to the correspondence between each frequency point and each SAI list in SIB15 relationship, determine the target frequency point corresponding to the target SAI list, and then determine that the target frequency point provides the target MBMS service.

2. The serving cell does not broadcast SIB15.

If the serving cell where the terminal currently resides does not broadcast SIB15, the terminal determines which frequency point provides the MBMS service that the terminal wants to receive according to the corresponding relationship between TMGI and frequency points in the USD information. For example, the MBMS service that the terminal is interested in is the target MBMS service. The terminal can determine the target TMGI corresponding to the target MBMS service according to the correspondence between each MBMS service and each TMGI in the USD, and then determine the corresponding relationship between each TMGI and each frequency point. The target frequency point corresponding to the target TMGI, and then it is determined that the target frequency point provides the target MBMS service.

In addition to using conventional cell reselection rules for cell reselection, the terminal also performs the following process:

(1) The terminal can only receive the interested MBMS service if it resides in the cell of a certain frequency point, and the priority of the frequency point is set as the highest priority.

(2) Only when the terminal reselects and resides in a candidate cell on a certain frequency point can it continue to receive the MBMS service being received during the moving process, and the priority of the frequency point is set as the highest priority.

(3) When the MBMS service that the terminal is interested in is no longer available (for example, after the session ends, or when the terminal no longer wants to receive the MBMS service), the terminal does not give priority to reselecting to the cell on the frequency point that provides the MBMS service.

In the prior art, when the serving cell does not broadcast the SIB15 containing the mobility information of the MBS UE, it will determine the frequency point that provides the target MBS service according to the correspondence between the TMGI and the frequency point in the USD information. When one MBS service corresponds to multiple frequency points, the TMGI of each MBS service in the USD information also corresponds to multiple frequency points. According to the above method, the terminal will determine the multiple frequency points corresponding to the target MBS service, and it cannot determine which frequency point provides the MBS service that the terminal wants to receive, and thus cannot determine which frequency point priority is set as the highest priority. There is no way to guarantee the continuity of receiving MBS services when the terminal is moving.

In view of this, the embodiment of the present application provides a method for receiving multimedia broadcasting services. The embodiment of the present application can be applied to but not limited to the 5G NR system, and can also be applied to the long term evolution (long term evolution, LTE) system. The long term evolution advanced (long term evolution-advanced, LTE-A) system, enhanced long term evolution-advanced (eLTE) and other communication systems, and may also be extended to wireless fidelity (wireless fidelity, WiFi), global Microwave interconnection access (worldwide interoperability for microwave access, wimax), future wireless communication systems and related cellular systems such as 3GPP.

The method for receiving a multimedia broadcast service will be introduced below in conjunction with the schematic diagram of an application scenario of the method for receiving a multimedia broadcast service shown in FIG. 1 .

The application scenario diagram shown in FIG. 1 includes a base station 110 and a terminal 120, and the base station 110 and the terminal 120 can communicate with each other. It should be noted that, FIG. 1 takes one base station 110 and one terminal 120 as an example. In fact, the number of base stations and terminals in the communication system is not limited in this embodiment of the present application.

Specifically, the terminal 120 determines the candidate cell supporting the target MBS service and the frequency point corresponding to the candidate cell from multiple neighboring cells according to the area location information of the neighboring cell and the preset corresponding relationship, and assigns the frequency point of the candidate cell to The priority is adjusted to the highest, which can ensure that the terminal reselects to a candidate cell during cell reselection, and then the terminal 120 can receive the service data of the target MBS service during the moving process, thereby ensuring the continuity of receiving MBS services. Wherein, the process of determining the target frequency point by the terminal 120 will be specifically introduced below.

On the basis of the application scenario discussed in FIG. 1 , the MBS reception method involved in the embodiment of the present application will be introduced below by taking the MBS reception method performed by the terminal shown in FIG. 2 as an example.

S201. Receive a system information block broadcast by at least one first cell.

The cell currently accessed by the terminal is the serving cell, and the first cell is the neighboring cell of the serving cell accessed by the terminal. The first cell can broadcast its own SIB (the system information block involved in this application is SIB1) through the base station, and then the terminal A system information block broadcast by at least one first cell is received. The system information block can be an existing SIB, such as SIB1, or a newly added SIB, but its capability is similar to that of SIB1.

The system information block carries the location area information of the first cell. The location area information is used to indicate the location of the first cell. The location area information includes any of the following information, which will be introduced separately below.

(1) The location area information is an SAI list.

The SAI is used to uniquely identify one or more cells belonging to one location area. According to different SAI division methods, a cell may be identified by different SAIs, therefore, each cell corresponds to an SAI list, and each SAI list includes one or more SAIs.

(2) The location area information is TAI.

TAI is used to uniquely identify the tracking area within the Public Land Mobile Network (PLMN), TAI is identified by the Public Land Mobile Network Identity (PLMN ID) and Tracking Area Code (Tracking Area Cod, TAC) composition.

(3) The location area information is the cell identifier.

The cell ID is used to uniquely identify each cell.

The embodiment of the present application provides multiple representation modes of the location area information, and the base station and the terminal may predetermine a specific representation mode of the location area information according to the actual situation. For example, if the location area information is an SAI list, then the terminal obtains the SAI list of the first cell from the received SIB, or if the location area information is a cell identifier, then the terminal obtains the cell identifier of the first cell from the received SIB , or for example, the location area information is TAI, the terminal acquires the TAI of the first cell from the received SIB.

S202. From at least one first cell according to the predetermined correspondence between the service identifier of the MBS service, the frequency point and the location area information, the service identifier of the target MBS service that the terminal is interested in, and the location area information of each first cell The candidate cells supporting the target MBS service and the frequency points corresponding to the candidate cells are determined.

The terminal needs to pre-determine the correspondence between the MBS service identifier, the frequency point and the location area information. One MBS service service identifier can correspond to multiple frequency points, and each frequency point corresponds to one location area information. In order to more clearly illustrate the correspondence between the service identifier, frequency point and location area information of the MBS service, please refer to Table 1.

Table 1

Wherein, the service identifier of the first MBS service is MBS1, and MBS1 corresponds to two frequency points, namely frequency point 1 and frequency point 2, frequency point 1 corresponds to location area information 1, and frequency point 2 corresponds to location area information 2. The service identifier of the second MBS service is MBS2. MBS2 corresponds to three frequency points, namely frequency point 3, frequency point 4 and frequency point 5. Frequency point 3 corresponds to location area information 3, and frequency point 4 corresponds to location area information 4. Frequency point 4 corresponds to location area information 5.

The following describes how the terminal specifically determines the correspondence between the service identifier, frequency point and location area information of the MBS service.

As an embodiment, the correspondence between the service identifier, frequency point and location area information of the MBS service may be directly stored locally in the terminal, for example, the manufacturer may configure the correspondence in the terminal in advance when producing the terminal.

As an embodiment, the corresponding relationship between the service identifier, the frequency point and the location area information of the MBS service may be stored in the USD information, and the terminal obtains and stores the USD information. For example, the Application Function (AF) node of the core network publishes USD information during the MBS service declaration process, and the USD information includes the correspondence between the service identifier, frequency point and location area information of the MBS service.

As an embodiment, the terminal may, according to the first correspondence between the pre-configured frequency point and the location area information, the second correspondence between the obtained MBS service identifier and the frequency point, and the obtained MBS service The third correspondence between the identifier and the location area information is to obtain the correspondence between the service identifier, the frequency point and the location area information of the MBS service.

Specifically, the terminal obtains the USD information, obtains the second correspondence between the service identifier of the MBS service and the frequency point, and acquires the third correspondence between the service identifier of the MBS service and the location area information from the USD information. The first correspondence between the preconfigured frequency points and location area information is stored locally in the terminal, or stored in USD information. For the method of obtaining USD information, please refer to the content discussed above, and will not repeat it here.

As an embodiment, the first correspondence between the frequency point and the location area information, the second correspondence between the service identifier of the MBS service and the frequency point, and the third correspondence between the service identifier of the MBS service and the location area information The corresponding relationship may also be stored locally in the terminal, and the terminal directly obtains the corresponding relationship between the service identifier, frequency point and location area information of the MBS service according to the stored first corresponding relationship, second corresponding relationship and third corresponding relationship .

It should be noted that since there are various ways of expressing the location area information, there are also various correspondences between the service identifier, the frequency point and the location area information of the MBS service, which will be introduced respectively below.

In the first case, the location area information is an SAI list. At this time, the corresponding relationship between the service identifier, the frequency point and the location area information of the MBS service is specifically the correspondence relationship between the service identifier, the frequency point and the SAI list of the MBS service.

In the second case, the location area information is a cell identifier. At this time, the corresponding relationship between the service identifier, the frequency point and the location area information of the MBS service is specifically the correspondence relationship between the service identifier, the frequency point and the cell identifier of the MBS service.

The third case is location area information TAI. At this time, the corresponding relationship between the service identifier, the frequency point and the location area information of the MBS service is specifically the corresponding relationship between the service identifier, the frequency point and the TAI of the MBS service.

After the terminal obtains the corresponding relationship between the service identifier, the frequency point and the location area information of the MBS service, it saves the corresponding relationship locally in the terminal, and then the terminal can use the predetermined corresponding relationship and the target MBS service that the terminal is interested in The service identifier and the location area information of each first cell determine a candidate cell supporting the target MBS service and a frequency point corresponding to the candidate cell from at least one first cell.

Specifically, according to the service identifier of the target MBS service that the terminal is interested in and the predetermined corresponding relationship, multiple frequency points corresponding to the target MBS service can be determined first, and then combined with the area location information of the first cell and the predetermined corresponding relationship , the frequency point corresponding to the area location information of the first cell may be determined, and at this time, the first cell is a candidate cell supporting the target MBS service.

S203. Adjust the priority of the frequency point corresponding to the candidate cell to the highest, and receive service data of the target MBS service after reselecting to the candidate cell.

After the terminal determines the candidate cell supporting the target MBS service, if the number of the candidate cell is 1, it may directly adjust the priority of the frequency point corresponding to the candidate cell to the highest. If the number of candidate cells is greater than 1, select a cell from the candidate cells as the target cell for reselection, and adjust the priority of the frequency point corresponding to the target cell to the highest. For example, a cell that satisfies a preset condition is selected from the candidate cells as the target cell, and the preset condition may be the cell closest to the serving cell accessed by the terminal or with the strongest signal.

After the terminal adjusts the priority of the frequency point corresponding to the target cell to the highest, it can perform cell reselection and reselect to the candidate cell. After the terminal moves to the candidate cell, it can stay in the candidate cell and receive the target MBS sent by the base station. Business data for business.

Taking the area position information as the SAI list as an example, the MBS receiving method for the multimedia broadcasting service is introduced in detail in combination with the first schematic diagram of the interaction flow among the base station, the terminal, and the AF node shown in FIG. 3 .

S301. The AF node publishes USD information.

The AF node publishes USD information during the MBS service declaration process, where the USD information includes the correspondence between the service identifier of the MBS service, the frequency point, and the SAI list.

S302. The terminal camps in the serving cell, receives and saves the USD information.

S303. The base station sends the target MBS service.

S304. The terminal receives the target MBS service.

S305. The base station broadcasts the SIB carrying the SAI list of the first cell.

S306. The terminal receives the SIB carrying the SAI list of the first cell.

S307. The terminal selects from at least one first cell according to the predetermined correspondence between the service identifier of the MBS service, the frequency point and the SAI list, the service identifier of the target MBS service that the terminal is interested in, and the SAI list of each first cell. The candidate cells supporting the target MBS service and the frequency points corresponding to the candidate cells are determined.

S308. The terminal adjusts the priority of the frequency point corresponding to the candidate cell to the highest.

S309. The base station continues to send the target MBS service.

S310. After reselecting to the candidate cell, the terminal continues to receive the target MBS service.

The terminal performs cell reselection based on the highest priority of the frequency point. After reselecting to a candidate cell, the terminal can move to the candidate cell to continue receiving the target MBS service.

Taking the area location information as the cell identifier as an example, the method for receiving the multimedia broadcasting service will be described in detail in combination with the second schematic diagram of the interaction flow between the base station, the terminal, and the AF node shown in FIG. 4 .

S401. The AF node publishes USD information.

The AF node publishes USD information during the MBS service declaration process, wherein the USD information includes the service identifier of the MBS service, the corresponding relationship between the frequency point and the cell identifier.

S402. The terminal camps in the serving cell, receives and saves the USD information.

S403. The base station sends the target MBS service to the terminal.

S404. The terminal receives the target MBS service.

S405. The base station broadcasts the SIB carrying the cell identity of the first cell.

S406. The terminal receives the SIB carrying the cell identity of the first cell.

S407. The terminal selects from at least one first cell according to the predetermined MBS service identifier, the corresponding relationship between frequency points and cell identifiers, the service identifier of the target MBS service that the terminal is interested in, and the cell identifiers of each first cell. The candidate cells supporting the target MBS service and the frequency points corresponding to the candidate cells are determined.

S408. The terminal adjusts the priority of the frequency point corresponding to the candidate cell to the highest.

S409. The base station continues to send the target MBS service.

S410. After reselecting to the candidate cell, the terminal continues to receive the target MBS service.

Taking TAI as the area location information as an example, the method for receiving the multimedia broadcasting service will be introduced in detail in combination with the third schematic diagram of the interaction process among the base station, the terminal, and the AF node shown in FIG. 5 .

S501. The AF node publishes USD information.

The AF node releases USD information during the MBS service declaration process, where the USD information includes the service identifier of the MBS service, the corresponding relationship between the frequency point and the TAI.

S502. The terminal camps in the serving cell, receives and saves the USD information.

S503. The base station sends the target MBS.

S504. The terminal receives the target MBS service.

S505. The base station broadcasts the SIB carrying the TAI of the first cell.

S506. The terminal receives the SIB carrying the TAI of the first cell.

S507. The terminal determines from at least one first cell according to the predetermined MBS service identifier, the correspondence between frequency points and TAIs, the service identifier of the target MBS service that the terminal is interested in, and the TAIs of each first cell. The candidate cells that support the target MBS service and the frequency points corresponding to the candidate cells.

S508. The terminal adjusts the priority of the frequency point corresponding to the candidate cell to the highest.

S509. The base station continues to send the target MBS service.

S510. After reselecting to the candidate cell, the terminal continues to receive the target MBS service.

Based on the same inventive concept, the embodiment of the present application provides a multimedia broadcast service MBS receiving device, as shown in Figure 6, the device includes: a processor 600, a memory 601 and a transceiver 602; wherein:

The processor 600 is configured to read the computer program in the memory 601 and perform the following operations:

receiving at least one system information block broadcast by the first cell, where the system information block carries location area information of the first cell, and the first cell is a neighboring cell of the serving cell accessed by the terminal;

Determine from at least one first cell according to the predetermined MBS service identifier, the correspondence between frequency points and location area information, the service identifier of the target MBS service that the terminal is interested in, and the location area information of each first cell. Output the candidate cells that support the target MBS service and the frequency points corresponding to the candidate cells;

Adjust the priority of the frequency point of the candidate cell to the highest, and receive the service data of the target MBS service after reselecting to the candidate cell.

In some embodiments, the processor 600 is specifically used for:

If the number of candidate cells is greater than 1, select a cell from the candidate cells as the target cell for reselection, and adjust the priority of the frequency point corresponding to the target cell to the highest.

In some embodiments, the processor 600 is specifically used for:

The USD information is obtained, and the second corresponding relationship between the service identifier of the MBS service and the frequency point is obtained from the USD information, and the third corresponding relationship between the service identifier of the MBS service and the location area information is acquired.

In some embodiments, the first corresponding relationship between the preconfigured frequency points and location area information is stored locally in the terminal, or stored in USD information.

The processor 600 mentioned above is responsible for managing the bus architecture and general processing, and the memory 601 can store data used by the processor 600 when performing operations. The transceiver 602 is used to receive and transmit data under the control of the processor 600 .

The processes disclosed in the embodiments of the present application may be applied to the processor 600 or implemented by the processor 600 . In the implementation process, each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 600 or instructions in the form of software. The processor 600 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the The disclosed methods, steps and logical block diagrams. The general purpose processor 600 may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by the hardware processor 600 or completed by a combination of hardware and software modules in the processor 600 . The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory 601, and the processor 600 reads the information in the memory 601, and completes the steps of the above-mentioned method flow in combination with its hardware.

The device in FIG. 6 can be used to implement any of the MBS receiving methods discussed above, and can also be used to implement any of the terminal functions discussed above.

Based on the same inventive concept, the embodiment of the present application also provides a multimedia broadcast service MBS receiving device, as shown in Figure 7, the device includes:

The receiving unit 701 is configured to receive at least one system information block broadcast by the first cell, where the system information block carries location area information of the first cell, and the first cell is a neighboring cell of the serving cell accessed by the terminal;

The determining unit 702 is configured to select from at least A candidate cell supporting the target MBS service and a frequency point corresponding to the candidate cell are determined in a first cell;

The receiving unit 701 is also configured to adjust the priority of the frequency point of the candidate cell to the highest, and receive the service data of the target MBS service after reselecting to the candidate cell.

In some embodiments, the determining unit 702 is specifically configured to: if the number of candidate cells is greater than 1, select a cell from the candidate cells as the target cell for reselection, and adjust the priority of the frequency point corresponding to the target cell to the highest.

In some embodiments, the device further includes an acquisition unit 703, and the acquisition unit 703 is used for:

In some embodiments, the acquiring unit 703 is specifically configured to:

The device in Figure 7 can be used to implement any of the multimedia broadcast service MBS receiving methods discussed above, and can also be set in the multimedia broadcast service MBS receiving device discussed in Figure 6 to realize the multimedia broadcast service MBS receiving device discussed in Figure 6 Function.

Based on the same inventive concept, the embodiment of the present application also provides a computer-storable medium on which a computer program is stored, and when the program is executed by a processor, the steps of the method for receiving the multimedia broadcasting service MBS discussed above are implemented.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

A multimedia broadcast service MBS receiving method, wherein, applied to a terminal, the method includes:

receiving at least one system information block broadcast by a first cell, where the system information block carries location area information of the first cell, and the first cell is a neighboring cell of the serving cell accessed by the terminal;

From the at least Determining a candidate cell supporting the target MBS service and a frequency point corresponding to the candidate cell in a first cell;

Adjust the priority of the frequency point corresponding to the candidate cell to the highest, and receive the service data of the target MBS service after reselecting to the candidate cell.
The method according to claim 1, wherein adjusting the priority of the frequency point corresponding to the candidate cell to the highest comprises:

If the number of the candidate cells is greater than 1, select a cell from the candidate cells as the target cell for reselection, and adjust the priority of the frequency point corresponding to the target cell to the highest.
The method according to claim 1, wherein, the corresponding relationship between the service identifier, the frequency point and the location area information of the MBS service determined in the following manner:

According to the first correspondence between the pre-configured frequency point and the location area information, the second correspondence between the obtained service identifier of the MBS service and the frequency point, and the obtained correspondence between the obtained service identifier of the MBS service and the location area information The third corresponding relationship is to obtain the corresponding relationship between the service identifier, the frequency point and the location area information of the MBS service.
The method according to claim 3, wherein, the second corresponding relationship between the service identifier of the MBS service and the frequency points obtained through the following manner, the third corresponding relationship between the obtained service identifier of the MBS service and the location area information :

Obtain the user service description USD information, obtain the second correspondence between the service identifier of the MBS service and the frequency point, and the third correspondence between the service identifier of the MBS service and the location area information from the USD information.
The method according to claim 3, wherein the first corresponding relationship between the pre-configured frequency points and location area information is stored locally in the terminal, or stored in user service description (USD) information.
The method according to claim 1, wherein the location area information includes any one of the following information: a service area identifier (SAI) table, a tracking area identifier (TAI), and a cell identifier.
A multimedia broadcast service MBS receiving device, which includes: a memory, a transceiver and a processor, wherein:

The memory is used to store computer programs;

The transceiver is used to send and receive data under the control of the processor;

The processor is used to read the computer program in the memory and perform the following operations:

receiving at least one system information block broadcast by a first cell, where the system information block carries location area information of the first cell, and the first cell is a neighboring cell of the serving cell accessed by the terminal;

From the at least Determining a candidate cell supporting the target MBS service and a frequency point corresponding to the candidate cell in a first cell;

Adjust the priority of the frequency point corresponding to the candidate cell to the highest, and receive the service data of the target MBS service after reselecting to the candidate cell.
The device of claim 7, wherein the processor is specifically configured to:

According to the first correspondence between the pre-configured frequency point and the location area information, the second correspondence between the obtained service identifier of the MBS service and the frequency point, and the obtained correspondence between the service identifier of the MBS service and the location area information The third corresponding relationship is to obtain the corresponding relationship between the service identifier, the frequency point and the location area information of the MBS service.
The device according to claim 8, wherein the first corresponding relationship between the preconfigured frequency points and location area information is stored locally in the terminal, or stored in user service description (USD) information.
A multimedia broadcast service MBS receiving device, including:

A receiving unit, configured to receive a system information block broadcast by at least one first cell, where the system information block carries location area information of the first cell, and the first cell is a neighbor of the serving cell accessed by the terminal District;

The determining unit is configured to, according to the pre-determined correspondence between the service identifier of the MBS service, the frequency point and the location area information, the service identifier of the target MBS service that the terminal is interested in, and the location area information of each of the first cells determining, from the at least one first cell, a candidate cell supporting the target MBS service and a frequency point corresponding to the candidate cell;

The receiving unit is configured to adjust the priority of the frequency point corresponding to the candidate cell to the highest, and receive the service data of the target MBS service after reselecting to the candidate cell.
The device according to claim 10, wherein the device further comprises an acquisition unit configured to:

According to the first correspondence between the pre-configured frequency point and the location area information, the second correspondence between the obtained service identifier of the MBS service and the frequency point, and the obtained correspondence between the service identifier of the MBS service and the location area information The third corresponding relationship is to obtain the corresponding relationship between the service identifier, the frequency point and the location area information of the MBS service.
The device according to claim 11, wherein the first corresponding relationship between the preconfigured frequency points and location area information is stored locally in the terminal, or stored in user service description (USD) information.
A computer storage medium, on which a computer program is stored, wherein, when the program is executed by a processor, the steps of the method according to any one of claims 1-6 are realized.