CN113596735A

CN113596735A - Method, base station and storage medium for managing and controlling MBMS service broadcast area

Info

Publication number: CN113596735A
Application number: CN202010364926.4A
Authority: CN
Inventors: 张大钧
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-11-02
Also published as: WO2021218957A1

Abstract

The invention discloses a method, a base station and a storage medium for managing and controlling a broadcast area of an MBMS service, which are used for solving the technical problems that the 5G MBMS service in the prior art is not flexible enough and can not be dynamically changed, and the method comprises the following steps: broadcasting effective area information in a synchronous area formed by a plurality of MBMS transmission cells aligned by a single frequency network SFN; the valid area information is used for indicating the range of valid areas transmitting the same MBMS service in the synchronous area.

Description

Method, base station and storage medium for managing and controlling MBMS service broadcast area

Technical Field

The present invention relates to the field of communications, and in particular, to a method, a base station, and a storage medium for managing and controlling an MBMS service broadcast area.

Background

The existing fourth generation mobile communication (4G) Multimedia Broadcast Multicast Service (MBMS) technology only allows synchronous Service transmission in the entire Multicast/Multicast Single Frequency Network (MBSFN) area, and the MBSFN area is statically deployed in advance by a Network operator, which cannot meet the requirement of more flexible and dynamic change of the fifth generation mobile communication (5G) MBMS Service.

In view of this, how to meet the requirement of more flexible and dynamic change of the 5G MBMS service becomes a technical problem to be solved urgently.

Disclosure of Invention

The invention provides a method, a base station and a storage medium for managing and controlling a broadcast area of an MBMS (multimedia broadcast multicast service), which are used for solving the technical problems that the 5G MBMS in the prior art is not flexible enough and can not change dynamically.

In a first aspect, to solve the above technical problem, an embodiment of the present invention provides a method for managing and controlling an MBMS service broadcast area, which is applied to a base station, and has a technical solution as follows:

broadcasting effective area information in a synchronous area formed by a plurality of MBMS transmission cells aligned by a single frequency network SFN; wherein, the effective area information is used for indicating the range of the effective area for transmitting the same MBMS service in the synchronous area.

Optionally, when the range of the effective area is changed, the effective area information is updated according to the changed range of the effective area.

Optionally, the valid area information includes a cell identifier and/or at least one temporary mobile group identifier TMGI; wherein, the TMGI corresponds to the MBMS services one by one.

Optionally, the cell identifier includes a physical cell identifier, PCI, list or a global cell identity, CGI, list.

Optionally, the cell in the active area corresponds to at least one active area information.

Optionally, the valid area information is broadcast, including:

the effective area information is carried in a designated system message and broadcasted;

or, carried in the SC-MCCH message.

Optionally, the SC-MCCH message further includes valid area coding information corresponding to each MBMS session in the valid area; wherein one valid region corresponds to one valid region code.

Optionally, the specified system message further includes valid area coding information corresponding to the MBMS service in each cell in the synchronization area.

Optionally, each MBMS session corresponds to one or more valid area coding information.

Optionally, updating the valid area information includes:

the changed effective area information is carried in a designated system updating message and is sent to the user terminal, so that the user terminal updates the effective area information according to the changed effective area information; wherein the changed effective area information is determined according to the range of the changed effective area;

or, the changed effective area information is carried in an SC-MCCH update message and sent to the user terminal, so that the user terminal updates the effective area information according to the changed effective area information.

In a second aspect, an embodiment of the present invention provides a method for managing and controlling an MBMS service broadcast area, which is applied to a user terminal, and the technical solution of the method is as follows:

receiving effective area information broadcasted by a base station; the valid area information is used for indicating the range of valid areas for transmitting the same MBMS service in the synchronization area, and the synchronization area comprises a plurality of MBMS transmission cells aligned with a single frequency network SFN. Optionally, receiving the valid area information broadcasted by the base station, including:

receiving the effective area information through a designated system message; if the range of the effective area changes, receiving the changed effective area information through a specified system updating message so as to update the effective area information; wherein the changed effective area is determined according to the range of the changed effective area;

or, receiving the effective area information through an SC-MCCH message; and if the effective area information changes, receiving the changed effective area information through an SC-MCCH updating message so as to update the effective area information.

Optionally, the method further comprises:

acquiring effective area coding information corresponding to each MBMS session in the effective area from the SC-MCCH message; wherein, one effective region corresponds to one effective region code;

and storing the effective area coding information corresponding to each MBMS session locally.

Optionally, the method further comprises:

receiving the designated system message from the current resident cell; wherein, the appointed system message includes the effective area coding information corresponding to the MBMS service of the current resident cell;

and aiming at one MBMS service, judging whether a first effective area code which is locally stored and is associated with the MBMS service is the same as a second effective area code acquired from the appointed system message, and if so, continuing to receive the MBMS service.

Optionally, if the first effective area code is different from the second effective area code, it is determined that the cell where the user terminal currently resides is not within the range of the effective area corresponding to the MBMS service.

In a third aspect, an embodiment of the present invention provides a base station for managing and controlling a broadcast area of an MBMS service, including:

a broadcasting unit for broadcasting effective area information in a synchronization area formed by a plurality of MBMS transmission cells aligned by a single frequency network SFN; wherein, the effective area information is used for indicating the range of the effective area for transmitting the same MBMS service in the synchronous area.

Optionally, the base station further includes:

and the updating unit is used for updating the effective area information according to the changed range of the effective area when the range of the effective area is changed.

Optionally, the broadcasting unit is specifically configured to:

or, carried in the SC-MCCH message.

Optionally, the updating unit is specifically configured to:

In a fourth aspect, an embodiment of the present invention provides a user terminal for managing and controlling a broadcast area of an MBMS service, including:

a receiving unit, configured to receive effective area information broadcast by a base station; the valid area information is used for indicating the range of valid areas for transmitting the same MBMS service in the synchronization area, and the synchronization area comprises a plurality of MBMS transmission cells aligned with a single frequency network SFN.

Optionally, the receiving unit is specifically configured to:

Optionally, the receiving unit is further configured to:

Optionally, the user terminal further includes:

a determining unit, configured to determine that the cell where the user terminal currently resides is not within the range of the effective area corresponding to the MBMS service if the first effective area code is different from the second effective area code.

In a fifth aspect, an embodiment of the present invention further provides a base station, where the base station includes: a processor, a memory, and a transceiver;

the processor is used for reading the program in the memory and executing the following processes:

Optionally, the processor is further configured to:

and when the range of the effective area is changed, updating the effective area information according to the changed range of the effective area.

Optionally, the processor is further configured to:

or, carried in the SC-MCCH message.

Optionally, the processor is further configured to:

In a sixth aspect, an embodiment of the present invention further provides a user terminal, where the user terminal includes: a processor, a memory, and a transceiver;

receiving effective area information broadcasted by a base station; the valid area information is used for indicating the range of valid areas for transmitting the same MBMS service in the synchronization area, and the synchronization area comprises a plurality of MBMS transmission cells aligned with a single frequency network SFN.

Optionally, the processor is specifically configured to:

Optionally, the processor is further configured to:

Optionally, the processor is further configured to: and if the first effective area code is different from the second effective area code, determining that the cell where the user terminal currently resides is not in the range of the effective area corresponding to the MBMS.

In a seventh aspect, an embodiment of the present invention further provides a readable storage medium, including:

a memory for storing instructions that, when executed by the processor, cause an apparatus comprising the readable storage medium to perform the method of the first or second aspect as described above.

Through the technical solutions in one or more of the above embodiments of the present invention, the embodiments of the present invention have at least the following technical effects:

in the embodiment provided by the invention, the effective area information is broadcasted in the synchronous area formed by the MBMS transmission cells aligned by a plurality of single frequency networks SFN; the effective area information is used for indicating the range of the effective area for transmitting the same MBMS service in the synchronous area, so that the 5G access network node can be allowed to dynamically change the range of the effective area during the preparation or transmission period of the MBMS service, thereby meeting the flexible transmission of the 5G MBMS service, dynamically changing different service transmission modes, further saving network resources and improving user experience.

Drawings

Fig. 1 is a flowchart of broadcasting valid area information using a designated system message according to an embodiment of the present invention;

fig. 2 is a flowchart of broadcasting valid area information using an SC-MCCH message according to an embodiment of the present invention;

fig. 3 is a flowchart of changing effective area information by using a specified system update message according to an embodiment of the present invention;

fig. 4 is a flowchart of changing effective area information by using a specified system update message according to an embodiment of the present invention;

fig. 5 is a first flowchart of managing an effective area when a CU and a DU in a base station are separately deployed according to an embodiment of the present invention;

fig. 6 is a second flowchart of managing an effective area when a CU and a DU in a base station are separately deployed according to an embodiment of the present invention;

fig. 7 is a flowchart of transmitting valid region encoding information corresponding to a valid region according to an embodiment of the present invention;

fig. 8 is a flowchart of managing an effective area when a CU and a DU in a base station are separately deployed according to an embodiment of the present invention;

fig. 9 is a first schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 10 is a first schematic structural diagram of a user terminal according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a user terminal according to an embodiment of the present invention.

Detailed Description

The embodiment of the invention provides a method, a base station and a storage medium for managing and controlling a broadcast area of an MBMS service, which aim to solve the technical problems that the 5G MBMS service in the prior art is not flexible enough and can not change dynamically.

In order to solve the technical problems, the general idea of the embodiment of the present application is as follows:

a method for managing and controlling MBMS service broadcast area is provided, which is applied to a base station, and comprises the following steps: broadcasting effective area information in a synchronous area formed by a plurality of MBMS transmission cells aligned by a single frequency network SFN; the valid area information is used for indicating the range of valid areas transmitting the same MBMS service in the synchronous area.

In the scheme, the effective area information is broadcasted in the synchronous area formed by the MBMS transmission cells aligned by the single frequency network SFN; the effective area information is used for indicating the range of the effective area for transmitting the same MBMS service in the synchronous area, so that the 5G access network node can be allowed to dynamically change the range of the effective area during the preparation or transmission period of the MBMS service, thereby meeting the flexible transmission of the 5G MBMS service, dynamically changing different service transmission modes, further saving network resources and improving user experience.

In order to better understand the technical solutions of the present invention, the following detailed descriptions of the technical solutions of the present invention are provided with the accompanying drawings and the specific embodiments, and it should be understood that the specific features in the embodiments and the examples of the present invention are the detailed descriptions of the technical solutions of the present invention, and are not limitations of the technical solutions of the present invention, and the technical features in the embodiments and the examples of the present invention may be combined with each other without conflict.

The embodiment of the invention provides a method for managing and controlling an MBMS service broadcast area, which is applied to a base station.

Broadcasting effective area information in a synchronization area formed by a plurality of MBMS transmission cells aligned by a Single Frequency Network (SFN); the valid area information is used for indicating the range of valid areas transmitting the same MBMS service in the synchronous area.

For example, the synchronous area comprises MBMS transmission cells 1-30, wherein the MBMS service 1 is synchronously transmitted in the MBMS transmission cells 8-15, and the effective area corresponding to the MBMS service 1 is the MBMS transmission cells 8-15 and is marked as an effective area 1; MBMS 2-5 are synchronously transmitted in MBMS transmission cells 20-28, effective areas corresponding to the MBMS 2-5 are the MBMS transmission cells 20-28 and are marked as effective areas 2, effective area information 1 is generated according to the effective areas 1, effective area information 2 is generated according to the effective areas 2, and a base station broadcasts the effective area information 1 and the effective area information 2 in the synchronous areas, so that terminals in the synchronous areas can determine which cells the MBMS 1-5 can receive.

In the embodiment provided by the present invention, the valid area information includes a cell identifier and/or at least one Temporary Mobile Group Identifier (TMGI); wherein, the TMGI corresponds to the MBMS services one by one.

The Cell Identity includes a Physical Cell Identity (PCI) list or a Global Cell Identity (CGI) list.

When there are a plurality of TMGIs, the TMGI group may be present in the effective area information in the form of a TMGI group (per TMGI group).

In an embodiment provided by the present invention, a cell in the active area corresponds to at least one active area information. That is, the cells in the active area allow configuration of one or more active area information.

In the embodiment provided by the invention, the SC-MCCH message transmitted in the effective area also comprises effective area coding information corresponding to each MBMS session in the effective area; wherein one valid region corresponds to one valid region code. After receiving the SC-MCCH message, the user terminal stores the effective area coding information (which may also be understood as the corresponding relationship between the MBMS session and the effective area coding information) corresponding to each MBMS session acquired from the SC-MCCH message locally.

Wherein each MBMS session corresponds to one or more active area coding information. The base station allows the corresponding relation between the MBMS conversation and the effective area coding information to be changed.

The appointed system message also includes the effective area coding information corresponding to the MBMS service in each cell in the synchronous area. After the user terminal acquires the second effective area code in the effective area code information from the designated system message corresponding to the current resident cell, the user terminal compares the second effective area code acquired from the designated system message with the locally stored (i.e. acquired from the SC-MCCH message) first effective area code for an MBMS service (for example, the service is the MBMS service being received by the user terminal), and if the second effective area code is the same as the first effective area code, continues to receive the MBMS service, otherwise, determines that the current resident cell is not in the effective area range of the MBMS service.

The effective area information is broadcasted in the following two ways:

in the first mode, the valid area Information is carried in a designated System message for broadcasting, for example, if the valid area corresponds to the MBMS service 1, the valid area Information is carried in a System Information Block (SIB) message of the MBMS service 1 for broadcasting.

In the second way, the effective area information is carried in a Single-cell Multimedia Broadcast Multicast Service Control channel (SC-MCCH) message for broadcasting, for example, the effective area information is sent to the user equipment through the SC-MCCH channel of each cell, and the effective area information can be carried in the SC-MCCH message.

For example, the effective area includes cells 1 to 5, and when the cell 6 joins the effective area, it is determined that the range of the effective area has changed, and in this case, the effective area information needs to be updated according to the changed range of the effective area.

The valid area information is updated correspondingly in two ways:

firstly, the changed effective area information is carried in a specified system updating message and sent to the user terminal, so that the user terminal updates the effective area information according to the changed effective area information; wherein the changed effective area information is determined according to the range of the changed effective area.

For example, the cells included in the effective area are cells 1 to 5, and when the cell 6 joins the effective area, it is determined that the range of the effective area has changed, and at this time, it is necessary to generate changed effective area information according to the changed range of the effective area, carry the changed effective area information in the corresponding MBMS SIB update message, and send the information to the user terminal, so that the user terminal updates the effective area information according to the changed effective area information.

In the second mode, the changed effective area information is carried in an SC-MCCH updating message and is sent to the user terminal, so that the user terminal updates the effective area information according to the changed effective area information.

For example, the cells included in the effective area are cells 1 to 5, and when the cell 6 joins the effective area, it is determined that the range of the effective area has changed, and at this time, the changed effective area information needs to be generated according to the range of the changed effective area, and the changed effective area information is carried in the corresponding SC-MCCH update message and sent to the user terminal, so that the user terminal updates the effective area information according to the changed effective area information.

After the method for managing the MBMS service broadcast area is introduced from the base station side, the following description will be made from the user terminal side.

The method for managing and controlling the MBMS service broadcast area is implemented at the user terminal side.

Receiving effective area information broadcasted by a base station; the valid area information is used for indicating the range of valid areas for transmitting the same MBMS service in a synchronization area, and the synchronization area comprises a plurality of MBMS transmission cells aligned with a single frequency network SFN.

In the embodiments provided in the present invention, the valid area information includes a cell identifier and/or at least one TMGI; wherein, the TMGI corresponds to the MBMS services one by one.

The cell identity comprises a PCI list or CGI list.

When there are a plurality of TMGIs, the TMGIs may be present in the effective area information in a per TMGI group manner.

Receiving the effective area information broadcasted by the base station, there are several ways:

a first mode of receiving effective area information through a designated system message; if the range of the effective area changes, the changed effective area information is received through the appointed system updating information so as to update the effective area information; wherein the changed effective area is determined according to the range of the changed effective area.

For example, the synchronous area comprises MBMS transmission cells 1-20, wherein MBMS services are synchronously transmitted in MBMS transmission cells 6-12, the effective area corresponding to the MBMS services is the MBMS transmission cell 6-12, the base station generates effective area information according to the effective area and sends the effective area information to the user terminal through SIB information, and the user terminal acquires the effective area information from the SC-MCCH information and stores the effective area information in the local.

When the range of the effective area is changed, if the cell 18 newly joins the effective area, the range of the changed effective area is determined to be the cells 6 to 12 and the cell 18, the base station generates corresponding changed effective area information according to the range of the changed effective area and sends the changed effective area information to the user terminal through an SIB (system information block) update message, and the user terminal acquires the changed effective area information from the SIB update message and updates the previous effective area information by using the changed effective area information. In the second mode, the effective area information is received through an SC-MCCH message, and if the effective area information changes, the changed effective area information is received through an SC-MCCH updating message so as to update the effective area information.

For example, the synchronous area comprises MBMS transmission cells 12-50, wherein MBMS services are synchronously transmitted in the MBMS transmission cells 12-40, the effective area corresponding to the MBMS services is the MBMS transmission cells 12-40, the base station generates effective area information according to the effective area and sends the effective area information to the user terminal through SC-MCCH information, and the user terminal acquires the effective area information from the SC-MCCH information and stores the effective area information in the local.

When the range of the effective area is changed, for example, the cells 20 and 26 are removed from the effective area, the range of the changed effective area is determined to be the cells 12 to 19 and the cells 21 to 25 and 27 to 40, the base station generates corresponding changed effective area information according to the range of the changed effective area and sends the changed effective area information to the user terminal through the C-MCCH updating message, and the user terminal acquires the changed effective area information from the C-MCCH updating message and updates the previous effective area information by using the changed effective area information.

In the process of transmitting data of different MBMS services, different coding modes are usually adopted to code the data and then transmit the data, and a corresponding user terminal can analyze the coded data of the MBMS service only after acquiring which coding mode is adopted by the data of the MBMS service, so as to acquire the data of the MBMS service.

In the embodiment provided by the invention, the user terminal can acquire the effective area coding information corresponding to each MBMS session in the effective area from the SC-MCCH message; wherein, one effective area corresponds to one effective area code, and the effective area code information corresponding to each MBMS conversation is stored locally.

For example, after receiving the SC-MCCH message in the current camping cell (assumed to be cell 1), the ue acquires the valid area coding information corresponding to each MBMS session from the SC-MCCH message and stores the valid area coding information in the local area.

In the embodiment provided by the invention, the user terminal can also receive a specified system message from the current resident cell; the appointed system message comprises effective area coding information corresponding to the MBMS service of the current resident cell; and aiming at one MBMS service, judging whether a first effective area code which is locally stored and is associated with the one MBMS service is the same as a second effective area code acquired from a specified system message, and if so, continuing to receive the one MBMS service. Therefore, the user terminal does not repeatedly read the corresponding SC-MCCH channel in the effective area, and the corresponding MBMS session data can be continuously received.

And if the first effective area code is different from the second effective area code, determining that the cell where the user terminal currently resides is not in the range of the effective area corresponding to the MBMS. The user terminal can initiate a request for receiving the MBMS service to the base station according to the self requirement.

For example, MBMS services 1 to 6 correspond to an effective area 1, the base station generates corresponding effective area coding information 1 according to the effective area 1, the effective area coding information includes effective area codes corresponding to each MBMS session corresponding to the MBMS services 1 to 6, and sends the effective area codes corresponding to each MBMS session to the user terminal through the SC-MCCH message, and the user acquires the effective area codes corresponding to each MBMS session from the effective area codes and stores the effective area codes in the local.

Assuming that a user terminal is currently receiving an MBMS service 2 and an effective area code corresponding to the user terminal is an effective area code 1, after the user terminal moves from a cell 1 to a cell 2, the effective area code 1 corresponding to the MBMS service 2 is acquired from an SIB message corresponding to the cell 2, and the user terminal compares that a first effective area code 1 corresponding to the MBMS service 2 stored locally is the same as a second effective area code 1 acquired from the SIB message corresponding to the cell 2, and determines that a cell (i.e., the cell 2) where the user terminal currently resides is within the range of the effective area 1.

For another example, after the user terminal moves from the cell 2 to the cell 8, the effective area code information corresponding to the MBMS service 2 is acquired from the SIB message corresponding to the currently camped cell 8, and the effective area code 2 is acquired therefrom, the user terminal compares the effective area code 2 with the locally stored effective area code 1 corresponding to the MBMS service 2, and the comparison result is different, and the user terminal is not in the effective area of the MBMS service 2 in the currently camped cell 8.

After the method for managing the MBMS service broadcast area is introduced from the base station side (i.e., the network side) and the terminal side, several embodiments will be provided below to facilitate those skilled in the art to fully understand the above technical solutions.

Embodiment one, broadcast the valid area information through the designated system message.

Fig. 1 is a flowchart illustrating broadcasting valid area information using a designated system message according to an embodiment of the present invention.

Step 101: the base station determines the effective area of the MBMS service, generates corresponding effective area information and carries the effective area information in MBMS SIB message.

The base station may determine an effective area corresponding to multi-cell broadcasting of some MBMS services through service statistics, RRM strategies, or based on received MBMS session messages, and the like, and further generate corresponding effective area information according to the effective area. The valid area information includes a PCI list or a CGI list.

In this embodiment, the designated system message is an MBMS SIB message.

It should be noted that the MBMS service may be one MBMS service or may be multiple MBMS services, that is, one MBMS service or multiple MBMS services may be simultaneously transmitted in one effective area, and the details are not limited.

Step 102: the base station broadcasts MBMS SIB messages.

When the designated system message is an MBMS SIB message, the base station broadcasts the MBMS SIB message through a Broadcast Control Channel (BCCH) of each cell.

Step 103: and the user terminal receives the MBMS SIB message and acquires the effective area information from the MBMS SIB message.

No matter the user terminal which is ready to receive the MBMS service is in an Idle state (Idle) or a connected state (connected), after receiving the MBMS SIB message, the user terminal does not repeatedly read the corresponding SC-MCCH channel in the effective area corresponding to the effective area information, thereby realizing continuous receiving of the corresponding MBMS session data.

In the second embodiment, the valid area information is broadcasted by referring to the SC-MCCH message.

Please refer to fig. 2, which is a flowchart illustrating an embodiment of broadcasting the effective area information using an SC-MCCH message.

Step 201: the base station determines the effective area of the MBMS service, generates corresponding effective area information and carries the effective area information in the SC-MCCH message.

Step 202: and the base station broadcasts the SC-MCCH message.

And the base station broadcasts the SC-MCCH message through the SC-MCCH channel of each cell.

Step 203: and the user terminal receives the SC-MCCH message and acquires the effective area information from the SC-MCCH message.

No matter the user terminal which is ready to receive the MBMS is in an Idle state (Idle) or a connected state (connected), after receiving the SC-MCCH message, the corresponding SC-MCCH channel is not repeatedly read in the effective area corresponding to the effective area information, thereby realizing continuous receiving of the corresponding MBMS session data.

And in the third embodiment, the effective area information is changed through the specified system change message.

Fig. 3 is a flowchart illustrating a method for changing effective area information by using a specified system update message according to an embodiment of the present invention.

Step 301: after determining that the transmission of the effective area of the MBMS is changed, the base station generates corresponding changed effective area information, and carries the changed effective area information in MBMS SIB change information.

The base station determines the effective area of some MBMS services to be changed, for example, dynamically increasing or decreasing the MBMS cells in the effective area, through service statistics, RRM policies, or based on the received MBMS session update message, etc., so as to generate corresponding changed effective area information and carry the changed effective area information in the MBMS SIB change message.

Step 302: the base station transmits an MBMS SIB change message.

The base station informs the user terminal that the corresponding MBMS SIB message of the user terminal is changed through the paging indication (the MBMS SIB change message is carried in the paging indication), and sends the MBMS SIB message to the user terminal at the modification period boundary of the MBMS SIB message.

Step 303: and the user terminal receives the MBMS SIB change message and acquires the changed effective area information from the MBMS SIB change message so as to change the effective area information.

No matter the user terminal which is ready to receive the MBMS service is in an Idle state (Idle) or a connected state (connected), after receiving the MBMS SIB modification message, the user terminal does not repeatedly read the corresponding SC-MCCH channel in the changed effective area corresponding to the changed effective area information, thereby realizing continuous receiving of the corresponding MBMS session data.

And fourthly, changing the effective area information through the SC-MCCH change message.

Fig. 4 is a flowchart illustrating a method for changing effective area information by using a specified system update message according to an embodiment of the present invention.

Step 401: after determining that the effective area of the MBMS is changed, the base station generates corresponding changed effective area information, and carries the changed effective area information in the SC-MCCH change message.

The base station determines the effective area of some MBMS services to be changed, for example, dynamically increasing or decreasing the MBMS cells in the effective area, through service statistics, RRM strategies, or based on the received MBMS session update message, etc., so as to generate corresponding changed effective area information, and carry the changed effective area information in the SC-MCCH change message.

Step 402: and the base station sends the SC-MCCH change message.

The base station informs the user terminal that the corresponding SC-MCCH message is changed through a MBMS specific notification mode, and sends the SC-MCCH message to the user terminal at the modification period boundary of the SC-MCCH message.

Step 403: and the user terminal receives the SC-MCCH change message and acquires the changed effective area information from the SC-MCCH change message so as to change the effective area information.

No matter the user terminal which is ready to receive the MBMS is in an Idle state (Idle) or a connected state (connected), after receiving the SC-MCCH change message, the user terminal does not repeatedly read the corresponding SC-MCCH channel in the changed effective area corresponding to the changed effective area information, thereby realizing continuous receiving of the corresponding MBMS session data.

Since the Centralized Unit (CU) and the Distributed Unit (DU) of the base station can be deployed separately, the process of managing the MBMS service broadcast area when the CU and the DU are deployed separately will be described below.

And fifth, the base station adopts a first scheme for managing the effective area in a CU/DU separated deployment mode.

Please refer to fig. 5, which is a flowchart illustrating a first procedure for managing an effective area when a CU and a DU in a base station are deployed separately according to an embodiment of the present invention.

Step 501: and the CU interacts with the DU to obtain the effective area information corresponding to the MBMS or the changed effective area information.

CU and DU in the base station exchange effective area information of MBMS service for multi-cell broadcast or changed effective area information through F1 common interface message.

The valid area information or the changed valid area information includes a PCI list or a CGI list.

The valid area information or the changed valid area information may be included in the common interface message in the form of F1 AP IE, or may be included in the common interface message in the form of RRC container, for example: transmitted to the DU in the form of an SIB message specific for MBMS.

Step 502: the CU and DU exchange the related information of scheduling and session corresponding to the MBMS service.

Step 503: the DU broadcasts MBMS SIB messages, which include valid region information or changed valid region information.

Step 504: the DU sends an SC-MCCH message to the user terminal.

The content of the SC-MCCH message comes from the CU, and the SC-MCCH message contains scheduling and session-related information of an SC-MCCH corresponding to an effective area.

Step 505: the DU transmits data of the MBMS service to the user terminal.

The DU transfers data of the MBMS service from the core network to the user terminal.

And the sixth embodiment adopts a second scheme for managing the effective area by adopting a CU/DU separated deployment mode.

Please refer to fig. 6, which is a flowchart illustrating a second process for managing an effective area when a CU and a DU in a base station are deployed separately according to an embodiment of the present invention.

Step 601: the CU interacts MBMS service area related information with the DU.

The DU can obtain the configuration information of the MCCH corresponding to the multi-cell.

Step 602: the CU interacts the relevant information of scheduling and conversation corresponding to the MBMS service with the DU, and the information comprises corresponding effective area information or changed effective area information.

The valid area information or the changed valid area information includes a PCI list or a CGI list, and the valid area information or the updated valid area information may be included in the common interface message in the form of F1 AP IE, or may be included in the common interface message in the form of RRC container, for example: is included in the MBMS scheduling message transmitted to the DU.

Step 603: the DU broadcasts MBMS SIB messages, which include MCCH configuration information of each cell in the active area.

The MCCH configuration information includes scheduling and session related information corresponding to the MBMS service.

Step 604: the DU sends an SC-MCCH message to the user terminal.

Step 605: the DU transmits data of the MBMS service to the user terminal.

Seventh, the base station manages an effective area code corresponding to the effective area.

Fig. 7 is a flowchart of transmitting valid region encoding information corresponding to a valid region according to an embodiment of the present invention.

Step 701: the base station determines the effective area of the MBMS service, generates corresponding effective area coding information, and carries the mapping relation between the MBMS session of the MBMS service and the effective area coding information in the SC-MCCH message.

The base station determines the effective area of some MBMS services for multi-cell broadcasting through service statistics, RRM strategies or the like, or based on received MBMS session messages and the like, and correspondingly generates corresponding effective area coding information. Wherein, one or more MBMS sessions correspond to the same effective area coding information, or each MBMS session corresponds to one or more effective area coding information.

One effective area can correspond to one MBMS service and also can correspond to a plurality of MBMS services.

Step 702: the base station sends the SC-MCCH message.

Step 703: and the user terminal receives the SC-MCCH message, and acquires and stores the mapping relation between the MBMS session and the coding information of the effective area.

Assuming that the current resident cell of the user terminal is cell 1, the user terminal receives the SC-MCCH message in the cell 1, acquires the mapping relation between the MBMS session and the coding information of the effective area from the SC-MCCH message, and stores the mapping relation in the local.

Usually, the respective active area codes of a plurality of MBMS sessions, and there may be some MBMS sessions in which the active area codes corresponding to the MBMS sessions are the same or all different.

Step 704: the base station generates effective area coding information of the MBMS corresponding to each cell in the effective area, and carries the effective area coding information in SIB message.

Since the cells in the effective area may belong to other effective areas, the base station generates the effective area coding information of the MBMS service corresponding to each cell, and carries the information in the corresponding SIB message to send to the user terminal through the BCCH channel.

Step 705: the base station transmits the SIB message.

The base station sends corresponding SIB messages through BCCH channels of corresponding cells.

Step 706: the user terminal receives the SIB message and obtains the effective area coding information from the SIB message, compares whether the effective coding information obtained from the SIB message is the same as the effective coding stored locally, and processes the MBMS service according to the comparison result.

After a user terminal which is ready to receive a certain MBMS session (supposed to correspond to MBMS service 1) reads SIB messages related to MBMS of a current resident cell, corresponding effective area coding information is acquired, and whether a second effective area code acquired from the SIB messages is the same as a first effective area code related to the MBMS service 1 stored locally is compared, so that different processing behaviors are adopted for the MBMS service 1. That is, if the same, the MBMS service 1 continues to be received. Otherwise, it is determined that the current resident cell is not in the synchronous area of the MBMS service 1, and the user terminal may determine whether to re-initiate the receiving request of the MBMS service 1 to the network side according to its own requirement.

And in the eighth embodiment, the base station manages the effective area coding of the effective area in a CU/DU separated deployment mode.

Please refer to fig. 8, which is a flowchart illustrating management of an effective area when a CU and a DU in a base station are deployed separately according to an embodiment of the present invention.

Step 801: CU determines the effective area of MBMS service, generates corresponding effective area coding information, and carries the mapping relation between the MBMS session of MBMS service and the effective area coding information in SC-MCCH message.

The CU determines the effective area of multi-cell broadcasting of certain MBMS services through service statistics, RRM strategies and the like, or based on received MBMS session messages and the like, and correspondingly generates corresponding effective area coding information. Wherein, one or more MBMS sessions are allowed to correspond to the same effective area coding information, or each MBMS session can correspond to one or more effective area coding information; and the CU generates a corresponding SC-MCCH message, wherein the SC-MCCH message contains the mapping relation between the MBMS session and the corresponding effective area coding information.

Step 802: the CU and DU exchange effective area information corresponding to certain MBMS services or changed related information, wherein the related information comprises a mapping relation between the MBMS session and the effective area coding information.

The CU and DU exchange certain MBMS service area related information via F1 common interface messages. And the DU can obtain configuration information of the multi-cell MCCH. The message contains the mapping relation between the MBMS conversation and the corresponding effective area coding information.

Step 803: the DU sends MCCH configuration information, which includes mapping relationship between MBMS session and active area coding information.

And the DU sends the configuration information of the multi-cell MCCH to the UE through the SC-MCCH channel of the corresponding cell.

Step 804: and the user terminal receives the SC-MCCH message, and acquires and stores the mapping relation between the MBMS session and the coding information of the effective area.

Assuming that the current resident cell of the user terminal is cell 1, the user terminal receives the SC-MCCH message in the cell 1 and stores the mapping relation between the MBMS session and the effective area coding information acquired from the SC-MCCH message in the local. That is, the user terminal obtains the valid area coding information corresponding to each of a plurality of MBMS sessions in the cell 1, where the MBMS sessions correspond to corresponding MBMS services.

Step 805: the DU generates or acquires an SIB message related to the MBMS, where the SIB message includes corresponding valid area coding information.

Step 806: the DU sends an SIB message.

And the SIB information is sent to the user terminal through the BCCH channel of the cell.

Step 807: the user terminal receives the SIB message and obtains the effective area coding information from the SIB message, compares whether the effective coding information obtained from the SIB message is the same as the effective coding stored locally, and processes the MBMS service according to the comparison result.

After the UE (no matter Idle or connected state) that is ready to receive the corresponding MBMS session interprets the SIB message related to the MBMS of the current camping cell, the corresponding valid area coding information is acquired. Assuming that the cell where the user terminal currently resides is cell 2, then comparing the first effective area code (assuming that the corresponding MBMS service 1) acquired from the SIB message with the second effective area code associated with the locally stored MBMS service 1, and taking different MBMS service processing actions according to the difference of the comparison results. I.e. if the two are identical, the reception of MBMS service 1 will continue. Otherwise, the cell 2 is not considered to be in the synchronization area of the MBMS service 1, and the UE may select whether to reinitiate the reception request of the MBMS service 1 to the network.

Based on the same inventive concept, an embodiment of the present invention provides a base station for managing and controlling an MBMS service broadcast area, where a specific implementation of a method for managing and controlling an MBMS service broadcast area of the base station may refer to the description in the method embodiment, and repeated details are not repeated, please refer to fig. 9, and the base station includes:

a broadcasting unit 901, configured to broadcast effective area information in a synchronization area formed by multiple MBMS transmission cells aligned in a single frequency network SFN; wherein, the effective area information is used for indicating the range of the effective area for transmitting the same MBMS service in the synchronous area.

Optionally, the base station further includes:

an updating unit 902, configured to update the effective area information according to the changed range of the effective area when the range of the effective area changes.

Optionally, the broadcasting unit 901 is specifically configured to:

or, carried in the SC-MCCH message.

Optionally, the updating unit 902 is specifically configured to:

Based on the same inventive concept, an embodiment of the present invention provides a user terminal for controlling an MBMS service broadcast area, where a specific implementation of a method for controlling an MBMS service broadcast area of the user terminal may refer to the description in the method embodiment, and repeated details are not repeated, referring to fig. 10, where the user terminal includes:

a receiving unit 1001 for receiving effective area information broadcast by a base station; the valid area information is used for indicating the range of valid areas for transmitting the same MBMS service in the synchronization area, and the synchronization area comprises a plurality of MBMS transmission cells aligned with a single frequency network SFN.

Optionally, the receiving unit 1001 is specifically configured to:

Optionally, the receiving unit 1001 is further configured to:

Optionally, the user terminal further includes:

a determining unit 1002, configured to determine that the cell where the user terminal currently resides is not within the range of the effective area corresponding to the MBMS service if the first effective area code is different from the second effective area code.

As shown in fig. 11, a base station provided in an embodiment of the present invention includes: a processor 1101, a memory 1102, and a transceiver 1103;

the processor 1101 is configured to read the program in the memory 1102 and execute the following processes:

Optionally, the processor 1101 is further configured to:

or, carried in the SC-MCCH message.

Optionally, the processor 1101 is further configured to:

The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1102 may store data used by the processor 1101 in performing operations. The transceiver 1103 is used for receiving and transmitting data under the control of the processor 1101.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1101, and various circuits of memory, represented by memory 1102, 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 processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1102 may store data used by the processor 1101 in performing operations.

The process disclosed by the embodiment of the invention can be applied to the processor 1101, or can be implemented by the processor 1101. In implementation, the steps of the signal processing flow may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1101. The processor 1101 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, discrete gate or transistor logic, discrete hardware components, or the like that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be embodied directly in a hardware processor, or in a combination of hardware and software modules within the processor 1101. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and completes the steps of the signal processing flow in conjunction with the hardware thereof.

As shown in fig. 12, a user terminal according to an embodiment of the present invention includes: a processor 1201, a memory 1202, and a transceiver 1203;

the processor 1201 is configured to read a program in the memory 1202 and execute the following processes:

Optionally, the processor 1201 is specifically configured to:

Optionally, the processor 1201 is further configured to:

Optionally, the processor 1201 is further configured to: and if the first effective area code is different from the second effective area code, determining that the cell where the user terminal currently resides is not in the range of the effective area corresponding to the MBMS.

The processor 1201 is responsible for managing a bus architecture and general processing, and the memory 1202 may store data used by the processor 1201 in performing operations. The transceiver 1203 is configured to receive and transmit data under the control of the processor 1201.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 1201, and various circuits, represented by the memory 1202, 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 processor 1201 is responsible for managing a bus architecture and general processing, and the memory 1202 may store data used by the processor 1201 in performing operations.

The process disclosed by the embodiment of the invention can be applied to the processor 1201, or can be implemented by the processor 1201. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1201. The processor 1201 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, discrete gate or transistor logic, discrete hardware components, or the like that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor 1201. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1202, and the processor 1201 reads information in the memory 1202 and completes the steps of the signal processing flow in conjunction with hardware thereof.

Based on the same inventive concept, an embodiment of the present invention further provides a readable storage medium, including:

a memory for storing instructions that, when executed by the processor, cause an apparatus comprising the readable storage medium to perform the method as described above on a base station side or a subscriber terminal side.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention 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, and the like) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

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

Claims

1. A method for managing and controlling MBMS service broadcast area is applied to a base station, and is characterized by comprising the following steps:

2. The method of claim 1, wherein when the range of the effective area is changed, the effective area information is updated according to the changed range of the effective area.

3. The method of claim 1, wherein the valid region information comprises a cell identity and/or at least one temporary mobile group identity, TMGI; wherein, the TMGI corresponds to the MBMS services one by one.

4. The method of claim 3, wherein the cell identity comprises a Physical Cell Identity (PCI) list or a global cell identity (CGI) list.

5. The method of claim 1, wherein a cell in the active area corresponds to at least one active area information.

6. The method of claim 1, wherein broadcasting valid area information comprises:

or, carried in the SC-MCCH message.

7. The method of claim 6, wherein the SC-MCCH message further includes active area code information corresponding to each MBMS session in the active area; wherein one valid region corresponds to one valid region code.

8. The method of claim 7, wherein the designated system message further includes valid area code information corresponding to the MBMS service in each cell in the synchronization area.

9. The method of claim 7, wherein each MBMS session corresponds to one or more active area coding information.

10. The method of claim 2, wherein updating the valid region information comprises:

11. A method for managing and controlling MBMS service broadcast area is applied to a user terminal, and is characterized by comprising the following steps:

12. The method of claim 11, wherein receiving the effective area information broadcast by the base station comprises:

13. The method of claim 12, further comprising:

14. The method of claim 13, further comprising:

15. The method of claim 14, wherein if the first active area code is different from the second active area code, it is determined that the cell in which the user terminal currently resides is not within the range of the active area corresponding to the one MBMS service.

16. A base station, comprising:

17. A user terminal, comprising:

18. A base station, comprising: a processor, a memory, and a transceiver;

19. The base station of claim 18, wherein the processor is further configured to:

20. The base station of claim 18, wherein the valid region information comprises a cell identity and/or at least one temporary mobile group identity, TMGI; wherein, the TMGI corresponds to the MBMS services one by one.

21. The base station of claim 18, wherein a cell in the active area corresponds to at least one active area information.

22. The base station of claim 18, wherein the processor is further configured to:

or, carried in the SC-MCCH message.

23. The base station of claim 22, wherein the SC-MCCH message further comprises active area code information corresponding to each MBMS session within the active area; wherein one valid region corresponds to one valid region code.

24. The base station of claim 23, wherein the designated system message further includes valid area coding information corresponding to MBMS services in each cell in the synchronization area.

25. The base station of claim 22, wherein each MBMS session corresponds to one or more active area coding information.

26. The base station of claim 18, wherein the processor is further configured to:

27. A user terminal, characterized in that the user terminal comprises: a processor, a memory, and a transceiver;

28. The user terminal of claim 27, wherein the processor is specifically configured to:

29. The user terminal of claim 28, wherein the processor is further configured to:

30. The user terminal of claim 29, wherein the processor is further configured to:

31. The user terminal of claim 30, wherein the processor is further configured to: and if the first effective area code is different from the second effective area code, determining that the cell where the user terminal currently resides is not in the range of the effective area corresponding to the MBMS.

32. A readable storage medium, comprising a memory,

the memory is for storing instructions that, when executed by the processor, cause an apparatus comprising the readable storage medium to perform the method of any of claims 1-15.