CN113453159A

CN113453159A - MBS service transmission method, MBS service transmission control method and related equipment

Info

Publication number: CN113453159A
Application number: CN202010231127.XA
Authority: CN
Inventors: 刘佳敏
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2021-09-28
Anticipated expiration: 2040-03-27
Also published as: CN113453159B; WO2021190483A1

Abstract

The invention provides an MBS service transmission method, an MBS service transmission control method and related equipment, wherein the method comprises the following steps: under the condition that the terminal is in an idle state or an inactive state to receive the MBS service and meets the cell reselection condition, determining a reselected target cell according to the related information of the MBS service; receiving the MBS service based on the target cell; the related information comprises effective area information of first configuration information and/or cell information supporting the MBS service, and the first configuration information is used for the terminal to receive the MBS service in an original cell. The embodiment of the invention ensures the receiving continuity of the MBS service.

Description

MBS service transmission method, MBS service transmission control method and related equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an MBS service transmission method, an MBS service transmission control method, and related devices.

Background

In the Broadcast Multicast transmission of Long Term Evolution (LTE), Multimedia Broadcast Multicast Service (MBMS) Service transmission in a Multicast or Multicast Single Frequency Network (MBSFN) mode and Multicast Service transmission in a Single cell point to multipoint (sc-ptm) mode are supported. The two modes are broadcast mode to send the control information related to the broadcast multicast service at the air interface, and broadcast/multicast mode to send the data information. If the Idle (Idle) or inactive (inactive) terminal moves, the control information must be obtained again in the new cell to receive the broadcast multicast service. Currently, cell reselection is usually based on the quality of a cell, and when the reselected cell cannot support the currently interested broadcast multicast service, the continuity of receiving the broadcast multicast service will be poor.

Disclosure of Invention

The embodiment of the invention provides an MBS service transmission method, an MBS service transmission control method and related equipment, aiming at solving the problem of poor continuity of receiving multicast service when an idle state or an inactive state broadcast terminal moves.

In a first aspect, an embodiment of the present invention provides an MBS service transmission method applied to a terminal, where the method includes:

under the condition that the terminal is in an idle state or an inactive state to receive the MBS service and meets the cell reselection condition, determining a reselected target cell according to the related information of the MBS service;

receiving the MBS service based on the target cell;

the related information comprises effective area information of first configuration information and/or cell information supporting the MBS service, and the first configuration information is used for the terminal to receive the MBS service in an original cell.

In a second aspect, an embodiment of the present invention provides an MBS service transmission control method, applied to a network device, where the method includes:

sending first configuration information of MBS service and related information of the MBS service; the related information of the MBS service is used for a terminal which is in an idle state or an inactive state and receives the MBS service to determine a reselected target cell under the condition of meeting the cell reselection condition;

In a third aspect, an embodiment of the present invention provides a terminal, including:

a determining module, configured to determine a reselected target cell according to relevant information of an MBS service when the terminal is in an idle state or an inactive state to receive the MBS service and meets a cell reselection condition;

a receiving module, configured to receive the MBS service based on the target cell;

In a fourth aspect, an embodiment of the present invention provides a network device, including:

the sending module is used for sending first configuration information of the MBS service and relevant information of the MBS service; the related information of the MBS service is used for a terminal which is in an idle state or an inactive state and receives the MBS service to determine a reselected target cell under the condition of meeting the cell reselection condition;

In a fifth aspect, an embodiment of the present invention provides a terminal, including: the MBS service transmission method comprises a memory, a processor and a program which is stored on the memory and can run on the processor, wherein the program realizes the steps in the MBS service transmission method when being executed by the processor.

In a sixth aspect, an embodiment of the present invention provides a network device, including: the MBS service transmission control method comprises a memory, a processor and a program which is stored on the memory and can run on the processor, wherein the program realizes the steps in the MBS service transmission control method when being executed by the processor.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and the computer program, when executed by a processor, implements the steps of the MBS service transmission method, or the computer program, when executed by the processor, implements the steps of the MBS service transmission control method.

In the embodiment of the invention, under the condition that the terminal is in an idle state or an inactive state to receive the MBS service and meets the cell reselection condition, a reselected target cell is determined according to the related information of the MBS service; and receiving the MBS service based on the target cell. Because the reselected target cell is determined based on the related information of the MBS service, the effective neighbor cell of the first configuration information or the neighbor cell supporting the MBS service can be preferentially selected from the neighbor cells meeting the reselection criterion, thereby ensuring the receiving continuity of the MBS service.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a block diagram of a network system to which an embodiment of the present invention is applicable;

fig. 2 is a flowchart of an MBS service transmission method according to an embodiment of the present invention;

fig. 3 is a flowchart of an MBS service transmission control method according to an embodiment of the present invention;

fig. 4 is a structural diagram of a terminal according to an embodiment of the present invention;

fig. 5 is a block diagram of a network device according to an embodiment of the present invention;

fig. 6 is a block diagram of another terminal provided in an embodiment of the present invention;

fig. 7 is a block diagram of another network device according to an embodiment of the present invention.

Detailed Description

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, 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 terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

Embodiments of the present invention are described below with reference to the accompanying drawings. The MBS service transmission method, the MBS service transmission control method and the related equipment provided by the embodiment of the invention can be applied to a wireless communication system. The wireless communication system may be a 5G system, or an Evolved Long term evolution (lte) system, or a subsequent Evolved communication system.

Referring to fig. 1, fig. 1 is a structural diagram of a network system to which an embodiment of the present invention is applicable, and as shown in fig. 1, the network system includes a terminal 11 and a network device 12, where the terminal 11 may be a user terminal or other terminal-side devices, for example: it should be noted that, in the embodiment of the present invention, a specific type of the terminal 11 is not limited, and the terminal may be a terminal-side Device such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device). The network device 12 may be a 5G base station, a later-version base station, or a base station in another communication system, or referred to as a node B, an evolved node B, or a Transmission Reception Point (TRP), an Access Point (AP), or another vocabulary in the field, and the network device is not limited to a specific technical vocabulary as long as the same technical effect is achieved. In addition, the network device 12 may be a Master Node (MN) or a Secondary Node (SN). It should be noted that, in the embodiment of the present invention, only the 5G base station is taken as an example, but the specific type of the network device is not limited.

Referring to fig. 2, fig. 2 is a flowchart of an MBS service transmission method according to an embodiment of the present invention, where the method is applied to a terminal, as shown in fig. 2, and includes the following steps:

step 201, determining a reselected target cell according to the relevant information of the MBS service when the terminal is in an idle state or an inactive state to receive the MBS service and meets the cell reselection condition;

step 202, receiving the MBS service based on the target cell;

In the embodiment of the invention, the terminal can acquire the first configuration information of the MBS service broadcasted by the original cell when the original cell is in a connected state, and the terminal can receive the MBS service based on the first configuration information. The received MBS service may be understood as an interested MBS service, for example, the terminal may determine the received MBS service based on the selection of the user, and the received MBS service may include one or more services.

It should be noted that the related information is sent by the network device, and when the first configuration information of the MBS service is only valid in the original cell, the network device may default to not indicate the valid area information or not indicate the related information.

That is to say, in this embodiment, before the determining, according to the relevant information of the MBS service, a reselected target cell when the terminal is in an idle state or an inactive state to receive the MBS service and meets a cell reselection condition, the method further includes:

receiving the first configuration information sent by the network equipment;

or, receiving the first configuration information and the related information sent by the network device.

The first configuration information may include Temporary Mobile Group Identity (TMGI), traffic cycle, Discontinuous Reception (DRX) information, traffic configuration information, traffic scheduling and transmission information, and the like. For example, the Group Radio Network Temporary Identifier (g-RNTI) and whether to perform Hybrid Automatic Repeat Request (HARQ) feedback, etc. may be included. Each TMGI service may correspond to a set of effective area information and/or supported cell information, or a group of TMGI services may correspond to a set of effective area information and/or supported cell information.

It should be understood that for terminals in idle state and inactive state, since their mobility is self-controlled, when reselecting a cell during moving, the selection of a target cell needs to be considered by itself, so as to facilitate the continuity of MBS service reception.

Optionally, the network device may configure a cell reselection condition for the terminal, or may agree on the cell reselection condition by a protocol. After the reselection condition is satisfied, the terminal may select a reselected target cell based on the relevant information of the MBS service. For example, after the terminal meets the measurement of the same-frequency or different-frequency neighboring cells, the terminal starts to detect the link quality, and when the cell reselection condition is met, the terminal preferentially selects a cell in the neighboring cell, which is in the same effective area as the current interested service, or a cell supporting the interested service.

After the terminal reselects a target cell, if the MBS service configurations of the target cell and the original cell belong to the same region, the first configuration information of the MBS service acquired by the terminal in the original cell can be directly used, and the terminal directly uses the first configuration information to receive the MBS service. If the target cell is only a cell supporting the same MBS service, the first configuration information may be different, and the terminal is to re-obtain MBS service configuration in the cell. The method for obtaining the service configuration is to re-read the second configuration information of the MBS service carried in the broadcast message, or re-enter the connection state, and obtain the MBS service configuration in a dedicated signaling manner.

Optionally, after the terminal in the connected state obtains the second configuration information of the MBS service and the related information of the MBS service in the dedicated signaling manner, the terminal may release the connection and return to the idle state or the inactive state.

Optionally, the receiving the MBS service based on the target cell includes any one of:

under the condition that the area corresponding to the original cell is the same as the area corresponding to the target cell, receiving the MBS service in the target cell according to the first configuration information;

and receiving the MBS service in the target cell according to the second configuration information sent by the target cell under the condition that the region corresponding to the original cell is different from the region corresponding to the target cell.

In an embodiment, the above-mentioned region corresponding to the original cell is the same as the region corresponding to the target cell, which can be understood as: the first configuration information of the MBS service takes effect in both the original cell and the target cell. In other words, the configuration information of the target cell and the original cell for the same MBS service is the same.

In another embodiment, when the area corresponding to the original cell is different from the area corresponding to the target cell, it can be understood that: the first configuration information of the original cell cannot be used continuously in the target cell. Specifically, whether the areas where the cells are located are the same or not may be represented by the area identifier. It should be noted that the target cell does not necessarily support the MBS service, i.e. the target cell cannot directly derive the MBS service supporting different configurations according to different regions. Only in the case that the target cell supports the MBS service, the second configuration information sent by the target cell for the MBS service may be obtained, and the MBS service may be received according to the second configuration information.

It should be understood that, in this embodiment, before receiving the MBS service on the target cell, it may also be determined whether the area corresponding to the target cell is the same as the area corresponding to the target cell based on the relevant information. That is to say: before receiving the MBS service based on the target cell, the method further includes any of:

determining that the area corresponding to the original cell is the same as or different from the area corresponding to the target cell according to the effective area information under the condition that the relevant information comprises the effective area information;

and determining that the area corresponding to the original cell is different from the area corresponding to the target cell under the condition that the relevant information does not include the effective area information or the relevant information.

In this embodiment, when the target cell is determined when the reselected target cell is selected, it may be determined whether the area corresponding to the target cell is the same as the area corresponding to the target cell.

It should be noted that the indication manner of the network device for the effective area information and the cell information supporting the MBS service may be set according to actual needs,

for example, in an embodiment, in a case that the related information includes the effective area information, the effective area information includes: a first cell identity list or area identity;

wherein the first configuration information is effective in a cell included in the first cell identification list, and the first configuration information is effective in a cell identical to the area identification.

In an embodiment, in a case that the related information includes the cell information supporting the MBS service, the cell information supporting the MBS service includes a second cell identifier list, and all cells included in the second cell identifier list support transmission of the MBS service.

For the first cell identifier list, it can be understood that a certain group of MBS service information is given in which cells can still use; for the second cell identifier list, it can be understood that the cells in which the MBS service can still support transmission are given; the difference between the two is that the effective area information represents that the cell supports the service and the configuration is completely the same as that of the cell, the UE can directly receive the MBS service without reading the configuration information, and the supported cell list information indicates that the MBS service is also transmitted in the cell, but the configuration is not necessarily the same, and the UE needs to read the configuration information again to be able to receive the MBS service.

And the area identifier is also used for defining an effective range, and the first configuration information of the MBS service is considered to be available in the cells when the same area identifier is broadcast in the adjacent cells. In other embodiments, the area identifier may also be used to distinguish cell identifiers that support the same service but are configured differently.

It should be noted that the MBS service includes N services, where N is a positive integer. The details of the relevant information are different, and when the target cell is reselected, the selected target cell is different, and the detailed implementation of the reselected target cell is described in detail below for different situations.

In case 1, when the related information only includes the cell information supporting the MBS service, the determining, according to the related information of the MBS service, a reselected target cell includes:

sequentially traversing the N services according to the sequence of the service priority from high to low until a target cell is determined; the target cell is determined according to a second adjacent cell under the condition that the currently traversed second service meets a second preset condition; the second preset condition includes: the L adjacent cells meeting the reselection requirement comprise adjacent cells supporting the second service;

the second neighboring cell is a neighboring cell supporting the second service in the L neighboring cells.

In this embodiment, meeting the reselection requirement may be understood as meeting a reselection criterion, and the terminal obtains the first configuration information of the MBS service of interest, and obtains information that the neighboring cell supports the service, for example, for the MBS service TMGI1 in the neighboring cell, a cell3 and a cell4 support the service; in this case, since there is no effective area carrying the MBS service configuration, which means that the default MBS service configuration is only effective in the current cell, once the terminal moves out of the current cell and reselects to the target cell, the MBS service configuration needs to be released immediately and cannot be used continuously.

When the terminal judges a reselected target cell, if a cell3 and a cell6 simultaneously satisfy a cell reselection requirement, the cell3 is preferentially selected for access, because the cell3 can support the MBS service in which the terminal is interested.

When the terminal reselects the cell3, it needs to immediately release the original MBS service configuration and reacquire the interested MBS service configuration, and the acquisition mode may be reading from the broadcast signaling or entering into the connection state, and requesting the network for dedicated signaling to send.

It should be noted that, when there is more than one MBS service of interest to the terminal, and when a cell is reselected, none of the target cells can support all MBS services of interest, and how to reselect at that time is determined by the terminal itself. For example, the terminal is supported by MBS TMGI1 of interest in neighboring cells cell3 and cell4, MBS TMGI2 of interest is supported by neighboring cells cell6 and cell7, when a cell is reselected, cell3 and cell6 meet the cell reselection requirement, at this time, the cell3 or the cell6 is reselected to receive service TMGI1 or service TMGI2, and the terminal determines according to the service priority.

For example, in an embodiment, first, the neighboring cells meeting the cell reselection requirement may be determined, and then each service is traversed according to the service priority from high to low, and it is determined whether the neighboring cells meeting the cell reselection requirement include a cell supporting the currently traversed service. If yes, exiting traversal, and determining a target cell according to the cell of the currently traversed service in the adjacent cell meeting the cell reselection requirement; if not, the next priority service is continuously traversed. When none of the neighboring cells satisfying the cell reselection requirement supports any of the N services, the target cell may be determined based on the measurement result of the neighboring cell.

In another embodiment, each service may be traversed from high to low according to the service priority, and then it may be determined whether there is a neighboring cell that meets the cell reselection requirement in the cells supporting the currently traversed service. And if so, exiting traversal, and determining a target cell according to the neighbor cell meeting the cell reselection requirement in the cells supporting the currently traversed service.

In case 2, the determining, according to the relevant information of the MBS service, a reselected target cell under the condition that the relevant information only includes the valid area information includes:

sequentially traversing N services from high to low according to the service priority until a target cell is determined; the target cell is determined according to a first neighboring cell under the condition that a first service traversed currently meets a first preset condition, where the first preset condition includes: the L adjacent cells meeting reselection requirements comprise adjacent cells in which the first configuration information of the first service takes effect;

the first neighboring cell is a neighboring cell in which the first configuration information of the first service takes effect among the L neighboring cells.

The terminal obtains the configuration valid area information while obtaining the interested MBS service configuration, for example, for the configuration of the MBS service TMGI1, the valid area is 10, or explicitly lists that the area includes a cell3 and a cell4 to support the service transmission with the same configuration; when the target cell to be reselected by the terminal is a cell within the range of the area 10, for example, cell3 or cell4, the terminal does not need to read the MBS service configuration information again, and can directly receive the service with the current configuration information.

When the terminal judges a reselected target cell, if a cell3 and a cell6 simultaneously meet the cell reselection requirement, the cell3 is preferentially selected for access because the cell3 belongs to the same area.

When the terminal reselects a cell outside the same area, the original MBS service configuration is required to be released immediately, and the interested MBS service configuration is obtained again, wherein the obtaining mode can be reading from the broadcast signaling, or entering into a connection state, and sending a special signaling request to the network.

Particularly, when the interested services belong to more than one different areas, how to select the reselected cell is determined by the terminal according to the service priority. The service configurations in the same area can be directly used, and the service configurations in different areas need to be acquired again.

In case 3, the determining, according to the relevant information of the MBS service, a reselected target cell under the condition that the relevant information includes the valid area information and the cell information supporting the MBS service includes:

sequentially traversing the N services according to the sequence of the service priority from high to low until a target cell is determined; under the condition that the currently traversed third service meets a third preset condition, the target cell is determined according to a third neighbor cell; under the condition that the currently traversed third service does not meet a third preset condition and meets a fourth preset condition, the target cell is determined according to a fourth neighbor cell;

the third preset condition includes: the L adjacent cells meeting the reselection requirement comprise the adjacent cells in which the first configuration information of the third service takes effect;

the fourth preset condition includes: the L adjacent cells meeting the reselection requirement comprise adjacent cells supporting the third service;

the third neighboring cell is a neighboring cell in which the first configuration information of the third service takes effect among the L neighboring cells;

the fourth neighboring cell is a neighboring cell supporting the third service in the L neighboring cells.

In this embodiment, when the terminal obtains the MBS service configuration of interest, the terminal has both configuration effective area information and neighbor cell support information, and then the terminal preferentially considers to ensure continuous reception of the highest priority service according to its service priority. For example, consider that the highest priority service can configure a cell with a consistent area, followed by other cells that the highest priority service can support, followed by cells with consistent areas of other priority services or cells that support other priority services.

Specific implementations of the present invention are described in detail below for a better understanding of its implementation.

Firstly, the network equipment sends multicast configuration information to the terminal.

The terminal obtains the configuration information of the interested multicast service from the current service cell, and simultaneously obtains the effective area information of the configuration information, or the cell information supporting the same service, and the like. Wherein the multicast service configuration information includes: TMGI, traffic cycle, DRX information, traffic configuration information, traffic scheduling and transmission information, etc.

The valid area information of the configuration information and the cell information supporting the same service may include the following ways:

mode 1: cell list information, which gives the group of MBS service information in which cells can still use, and gives a specific cell identification list (id list); or giving out the MBS service in which cells can still support transmission, and giving out a specific cell id list; the difference between the two is that the effective area information represents that the cell supports the service and the configuration is completely the same as that of the cell, the terminal can directly receive the MBS service without reading the configuration information, and the supported cell list information indicates that the MBS service is also transmitted in the cell, but the configuration is not necessarily the same, and the terminal needs to read the configuration information again to be able to receive the MBS service.

Mode 2: the area identification is also used for defining the effective range, and the MBS service information can be considered to be used in the cells when the same area identification is broadcast in the adjacent cells; the area identity may also be used to distinguish cell identities that support the same service but are configured differently.

Mode 3: only the local cell is effective, which is a default mode, for example, if no additional area information is available, it means that the configuration information is effective only in the local cell, and once the terminal moves out of the range of the local cell, the configuration information is invalid.

The terminal obtains the interested multicast configuration information, the effective area information and the supported cell information from the current serving cell, and the method can be through broadcast signaling or through dedicated signaling. The broadcast signaling can be applied to idle state terminals, inactive terminals and connected state terminals. While the dedicated signaling is only applicable to the terminals currently in the connected state.

After the terminal in the connected state obtains the multicast configuration information and the effective area information by using a dedicated signaling mode, the terminal may also release the connection and return to the idle state or the inactive state.

The signaling manner may be that each TMGI service corresponds to a set of effective area information and supported cell information, or that a group of TMGI services corresponds to a set of effective area information and supported cell information.

For the terminal in the connection state, because the mobility of the terminal is completely controlled by the network side, the network side supports the interesting service information situation by matching the interesting service information of the terminal with the adjacent cell, and can reasonably select the target cell for the terminal. Therefore, the area information and the supported cell information are mainly used for target cell selection when the terminal autonomously moves.

And secondly, the terminal moves to the cell in the same region.

For terminals in idle state and inactive state, since their mobility is controlled by themselves, when reselecting a cell during moving, the selection of a target cell needs to be considered by itself, so as to facilitate the continuity of MBS service reception.

Since the terminal has already obtained the MBS service configuration information, the effective area information, and the supported cell information in the cell, for the terminal, it is necessary to preferentially select a cell capable of continuously receiving the MBS service according to the effective area information and the supported cell information, which is specifically as follows:

after the terminal meets the measurement of the same-frequency or different-frequency adjacent cells, the terminal starts to detect the link quality, and when the cell reselection condition is met, the terminal preferentially selects a cell in the adjacent cell, which is in the same effective area with the current interested service, or a cell supporting the interested service;

because the priority of cell reselection is set based on the frequency point, the MBS service is sent on one frequency point as much as possible, and the idle/inactive terminal sets the frequency point as a high-priority frequency point, so that the terminal can reside in the frequency point as much as possible to receive the MBS service;

the terminal reselects a cell, if the cell and the MBS service configuration of the original cell belong to the same region, the MBS service configuration obtained by the terminal in the original cell can be directly used, and the terminal directly uses the configuration to receive the MBS service. If the cell is only a cell supporting the same MBS service, the configuration may be different, and the terminal needs to re-acquire the MBS service configuration in the cell. The method for obtaining the service configuration is to re-read the MBS service configuration carried in the broadcast message, or re-enter the connection state, and obtain the MBS service configuration in a special signaling mode.

And thirdly, the terminal moves to the edge of the area.

If the cell to be reselected by the terminal does not belong to the effective area of the MBS service configuration, the specific area ID broadcasted in the SIB of the cell is different from the area ID notified during the service configuration, which proves that the areas are different. At this time, the MBS service configuration stored in the terminal is immediately invalid, and once reselection occurs, the configuration needs to be released. The terminal is in different areas and also needs to obtain the MBS service configuration again. The method for obtaining the service configuration is to re-read the MBS service configuration carried in the broadcast message, or re-enter the connection state, obtain the MBS service configuration in a special signaling mode, and when obtaining the configuration, there is also the region information or whether the adjacent cell supports the information, so as to facilitate the terminal to reselect the cell next time.

If the terminal cannot obtain the service configuration related to the MBS in the cell or the service interested by the terminal is not supported in the cell, the terminal needs to establish a unicast, which means that unicast transmission is performed from the core network side to the RAN side to the terminal, and a Protocol Data Unit session (PDU session) is maintained.

If the terminal finds that the target cell to which the terminal is to move belongs to a cell which does not support the interested service, the terminal can carry out unicast establishment request in advance so as to reduce time delay and service interruption.

And fourthly, various mobile scenes of the terminal.

The present embodiment gives how the terminal moves under various configurations.

Firstly, the premise is that the terminal obtains the configuration of the MBS service which is interested by the terminal in the current cell, the configuration can be obtained through broadcast signaling or special signaling, and the MBS service can be successfully received in the cell.

Secondly, when the terminal moves to the coverage edge of the cell and needs to perform cell reselection, various situations are as follows:

in the first case, the terminal obtains the information that the neighboring cell supports the service while obtaining the MBS service configuration of interest, for example, for MBS service TMGI1 in the neighboring cell, there are cell3 and cell4 to support the service; in this case, since there is no effective area carrying the MBS service configuration, which means that the default MBS service configuration is only effective in the current cell, once the terminal moves out of the current cell and reselects to the target cell, the MBS service configuration needs to be released immediately and cannot be used continuously.

When the terminal determines a reselected target cell, if a cell3 and a cell6 simultaneously satisfy the requirement of cell reselection, the cell3 is preferentially selected for access, because the cell3 can support the MBS service that the terminal is interested in.

It should be noted that, when there is more than one MBS service of interest to the terminal, and when a cell is reselected, none of the target cells can support all MBS services of interest, and how to reselect at that time is determined by the terminal itself. For example, the terminal is supported by MBS TMGI1 of interest in neighboring cells cell3 and cell4, MBS TMGI2 of interest is supported by neighboring cells cell6 and cell7, when a cell is reselected, cell3 and cell6 meet the requirement of cell reselection, at this time, the cell3 or the cell6 is reselected to receive service TMGI1, and the terminal determines according to the service priority.

In the second case, the terminal obtains the configuration valid area information while obtaining the interested MBS service configuration, for example, for the configuration of the MBS service TMGI1, its valid area is 10, or explicitly lists that the area includes cell3 and cell4 to support the service transmission with the same configuration; when the target cell to be reselected by the terminal is a cell within the range of the area 10, for example, cell3 or cell4, the terminal does not need to read the MBS service configuration information again, and can directly receive the service with the current configuration information.

When the terminal judges a reselected target cell, if a cell3 and a cell6 simultaneously meet the requirement of cell reselection, the cell3 is preferentially selected for access because the cell3 belongs to the same area.

In the third situation, when the terminal obtains the interested MBS service configuration, if there is both configuration effective area information and neighbor cell support information, the terminal preferentially considers to ensure continuous reception of the highest priority service according to its service priority. For example, consider that the highest priority service can configure a cell with a consistent area, followed by other cells that the highest priority service can support, followed by other cells with consistent areas or other supporting cells.

Generally speaking, in order to ensure the continuity of receiving the MBS service by the idle or inactive terminal when moving, the MBS service is sent at a frequency point as much as possible, so that the terminal can set the frequency point as the highest priority for cell reselection, thereby facilitating the continuous receiving by the terminal thereon. On the basis, the zone effective information can be set for different cells to support the same MBS service configuration, or the information that the adjacent cells support the service is convenient for the terminal to reselect and select the cells.

The MBS frequency point is a larger range, the range of the adjacent cell supporting the service is smaller, and the range of the same configured area is the minimum. The neighboring cells supporting the MBS service may be understood as different cells supporting the MBS service transmission with different configurations, and the cells configured in the same region may be understood as cells interacting with the MBS service configuration through an Xn interface to maintain consistency.

Referring to fig. 3, fig. 3 is a flowchart of another MBS service transmission control method according to an embodiment of the present invention, where the method is applied to a network device, as shown in fig. 3, and includes the following steps:

step 301, sending first configuration information of an MBS service and related information of the MBS service; the related information of the MBS service is used for a terminal which is in an idle state or an inactive state and receives the MBS service to determine a reselected target cell under the condition of meeting the cell reselection condition;

It should be noted that, this embodiment is used as an implementation of the network device corresponding to the embodiment shown in fig. 2, and specific implementations thereof may refer to relevant descriptions of the embodiment shown in fig. 2 and achieve the same beneficial effects, and are not described herein again to avoid repeated descriptions.

Referring to fig. 4, fig. 4 is a structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 4, the terminal 400 includes:

a determining module 401, configured to determine a reselected target cell according to relevant information of an MBS service when the terminal is in an idle state or an inactive state to receive the MBS service and meets a cell reselection condition;

a receiving module 402, configured to receive the MBS service based on the target cell;

Optionally, the receiving module 402 is specifically configured to execute any one of the following:

Optionally, the determining module 401 is further configured to perform any one of the following:

Optionally, the receiving module 402 is further configured to receive the first configuration information sent by the network device, when the terminal is in an idle state or an inactive state to receive the MBS service and meets a cell reselection condition; or, receiving the first configuration information and the related information sent by the network device.

Optionally, in a case that the relevant information includes the effective area information, the effective area information includes: a first cell identity list or area identity;

Optionally, when the related information includes the cell information supporting the MBS service, the cell information supporting the MBS service includes a second cell identifier list, and all cells included in the second cell identifier list support transmission of the MBS service.

Optionally, the MBS service includes N services, where N is a positive integer.

Optionally, in a case that the relevant information only includes the effective area information, the determining module 401 is specifically configured to:

Optionally, the determining module 401 is specifically configured to, under the condition that the related information only includes the cell information supporting the MBS service:

Optionally, the determining module 401 is specifically configured to, under the condition that the relevant information includes the valid area information and the cell information supporting the MBS service: :

The terminal provided by the embodiment of the present invention can implement each process implemented by the terminal in the method embodiment of fig. 2, and is not described here again to avoid repetition.

Referring to fig. 5, fig. 5 is a structural diagram of a network device according to an embodiment of the present invention, and as shown in fig. 5, the network device 500 includes:

a sending module 501, configured to send first configuration information of an MBS service and related information of the MBS service; the related information of the MBS service is used for a terminal which is in an idle state or an inactive state and receives the MBS service to determine a reselected target cell under the condition of meeting the cell reselection condition;

The network device provided in the embodiment of the present invention can implement each process implemented by the network device in the method embodiment of fig. 3, and is not described here again to avoid repetition.

Fig. 6 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention.

The terminal 600 includes but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, and a power supply 611. Those skilled in the art will appreciate that the terminal configuration shown in fig. 6 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

A processor 610, configured to determine a reselected target cell according to relevant information of an MBS service when the terminal is in an idle state or an inactive state to receive the MBS service and meets a cell reselection condition;

a radio frequency unit 601, configured to receive the MBS service based on the target cell;

It should be understood that, in this embodiment, the processor 610 and the radio frequency unit 601 can implement each process implemented by the terminal in the method embodiment of fig. 2, and are not described herein again to avoid repetition.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 601 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 610; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 601 may also communicate with a network and other devices through a wireless communication system.

The terminal provides wireless broadband internet access to the user through the network module 602, such as helping the user send and receive e-mails, browse web pages, and access streaming media.

The audio output unit 603 may convert audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into an audio signal and output as sound. Also, the audio output unit 603 can also provide audio output related to a specific function performed by the terminal 600 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.

The input unit 604 is used to receive audio or video signals. The input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics processor 6041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 606. The image frames processed by the graphic processor 6041 may be stored in the memory 609 (or other storage medium) or transmitted via the radio frequency unit 601 or the network module 602. The microphone 6042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 601 in case of the phone call mode.

The terminal 600 also includes at least one sensor 605, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 6061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 6061 and/or the backlight when the terminal 600 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 605 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 606 is used to display information input by the user or information provided to the user. The Display unit 606 may include a Display panel 6061, and the Display panel 6061 may be configured by a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 607 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 607 includes a touch panel 6071 and other input devices 6072. Touch panel 6071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 6071 using a finger, stylus, or any suitable object or accessory). The touch panel 6071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 610, receives a command from the processor 610, and executes the command. In addition, the touch panel 6071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 607 may include other input devices 6072 in addition to the touch panel 6071. Specifically, the other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 6071 can be overlaid on the display panel 6061, and when the touch panel 6071 detects a touch operation on or near the touch panel 6071, the touch operation is transmitted to the processor 610 to determine the type of the touch event, and then the processor 610 provides a corresponding visual output on the display panel 6061 according to the type of the touch event. Although in fig. 6, the touch panel 6071 and the display panel 6061 are two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 6071 and the display panel 6061 may be integrated to realize the input and output functions of the terminal, and this is not limited here.

The interface unit 608 is an interface for connecting an external device to the terminal 600. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 608 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 600 or may be used to transmit data between the terminal 600 and an external device.

The memory 609 may be used to store software programs as well as various data. The memory 609 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 609 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 610 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 609 and calling data stored in the memory 609, thereby performing overall monitoring of the terminal. Processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 610.

The terminal 600 may further include a power supply 611 (e.g., a battery) for supplying power to the various components, and preferably, the power supply 611 is logically connected to the processor 610 via a power management system, so that functions of managing charging, discharging, and power consumption are performed via the power management system.

In addition, the terminal 600 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, including a processor 610, a memory 609, and a computer program stored in the memory 609 and capable of running on the processor 610, where the computer program is executed by the processor 610 to implement each process of the MBS service transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

Referring to fig. 7, fig. 7 is a block diagram of another network device according to an embodiment of the present invention, and as shown in fig. 7, the network device 700 includes: a processor 701, a transceiver 702, a memory 703 and a bus interface, wherein:

a transceiver 702, configured to send first configuration information of an MBS service and related information of the MBS service; the related information of the MBS service is used for a terminal which is in an idle state or an inactive state and receives the MBS service to determine a reselected target cell under the condition of meeting the cell reselection condition;

It should be understood that, in this embodiment, the processor 701 and the transceiver 702 may implement each process implemented by the network device in the method embodiment of fig. 3, and are not described here again to avoid repetition.

In fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 701, and various circuits, represented by memory 703, 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 702 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. The user interface 704 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 701 is responsible for managing the bus architecture and general processing, and the memory 703 may store data used by the processor 701 in performing operations.

Preferably, an embodiment of the present invention further provides a network device, including a processor 701, a memory 703, and a computer program stored in the memory 703 and capable of running on the processor 701, where the computer program, when executed by the processor 701, implements each process of the MBS service transmission control method embodiment, and can achieve the same technical effect, and is not described herein again to avoid repetition.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the MBS service transmission control method embodiment on the network device side provided in the embodiment of the present invention, or when the computer program is executed by a processor, the computer program implements each process of the MBS service transmission method embodiment on the terminal side provided in the embodiment of the present invention, and can achieve the same technical effect, and in order to avoid repetition, the computer program is not described herein again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a base station) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A transmission method of broadcast multicast MBS service is applied to a terminal, and is characterized in that the method comprises the following steps:

receiving the MBS service based on the target cell;

2. The method of claim 1, wherein the receiving the MBS service based on the target cell comprises any one of:

3. The method of claim 2, wherein before the receiving the MBS service based on the target cell, the method further comprises any one of the following:

4. The method of claim 1, wherein before determining a reselected target cell according to the related information of the MBS service when the terminal is in an idle state or an inactive state to receive the MBS service and a cell reselection condition is satisfied, the method further comprises:

receiving the first configuration information sent by the network equipment;

5. The method according to claim 4, wherein in the case where the related information includes the effective area information, the effective area information includes: a first cell identity list or area identity;

6. The method of claim 1, wherein if the related information includes the cell information supporting the MBS service, the cell information supporting the MBS service includes a second cell identifier list, and all cells included in the second cell identifier list support transmission of the MBS service.

7. The method of claim 1, wherein the MBS service comprises N services, N being a positive integer.

8. The method of claim 7, wherein in the case that the relevant information only includes the valid area information, the determining the reselected target cell according to the relevant information of the MBS service comprises:

9. The method of claim 7, wherein in the case that the related information only includes the information about the cell supporting the MBS service, the determining the reselected target cell according to the related information about the MBS service comprises:

10. The method of claim 7, wherein in the case that the relevant information includes the valid area information and the cell information supporting the MBS service, the determining the reselected target cell according to the relevant information of the MBS service comprises:

11. A transmission control method for broadcast multicast MBS service is applied to network equipment, and is characterized in that the method comprises the following steps:

12. The method according to claim 11, wherein in the case where the related information includes the effective area information, the effective area information includes: a first cell identity list or area identity;

13. The method of claim 11, wherein if the related information includes the cell information supporting the MBS service, the cell information supporting the MBS service includes a second cell identification list, and all cells included in the second cell identification list support transmission of the MBS service.

14. A terminal, comprising:

15. A network device, comprising:

the sending module is used for sending the first configuration information of the MBS service and the related information of the MBS service; the related information of the MBS service is used for a terminal which is in an idle state or an inactive state and receives the MBS service to determine a reselected target cell under the condition of meeting the cell reselection condition;

16. A terminal, comprising: memory, processor and program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the broadcast multicast MBS service transmission method according to any of claims 1 to 10.

17. A network device, comprising: memory, processor and program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the broadcast multicast MBS service transmission control method according to any of claims 11 to 13.

18. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, realizes the steps of the broadcast multicast MBS service transmission method as recited in any one of claims 1 to 10, or which, when being executed by a processor, realizes the steps of the broadcast multicast MBS service transmission control method as recited in any one of claims 11 to 13.