WO2016173142A1

WO2016173142A1 - Method and device for cell switching, terminal, base station and storage medium

Info

Publication number: WO2016173142A1
Application number: PCT/CN2015/086665
Authority: WO
Inventors: 常华伟; 杜高鹏; 崔冶华
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-04-30
Filing date: 2015-08-11
Publication date: 2016-11-03
Also published as: CN106211243A

Abstract

Embodiments of the present invention provide a method and device for cell switching, a terminal, a base station and a storage medium. The method comprises: when the signal quality of a serving cell where a terminal is currently located is lower than a preset value, receiving cell reselection information published by a base station where the serving cell is located, wherein the cell reselection information carries: physical cell identifiers of neighbor cells of the serving cell, frequency points of the neighbor cells and a service area identifier (SAI) corresponding to an evolved multimedia broadcast multicast service (eMBMS) supported by the neighbor cells; determining, according to the frequency points of the neighbor cells in the cell reselection information, a to-be-switched target cell; and if the to-be-switched target cell supports the eMBMS service currently performed by the terminal, switching from the serving cell to the to-be-switched target cell. By means of the present invention, it is judged whether a to-be-switched target cell supports eMBMS service currently performed by a terminal or not according to cell reselection information, thereby effectively ensuring the continuity of the eMBMS service when the terminal performs cell switching.

Description

Method, device, terminal, base station and storage medium for cell handover

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a terminal, a base station, and a storage medium for cell handover.

Background technique

The Multimedia Broadcast Multicast Service (eMBMS) is a technology for sharing network resources to transfer data from one data source to multiple targets. With eMBMS technology, the use of network resources will depend on the number of content channels, not the number of users. In this way, in the case of a large number of users, the core network and the radio access network can realize a large amount of resource saving, and further reduce the network cost.

In the actual network deployment of the eMBMS, there are multiple MBSFN Multicast/Multicast Single Frequency Network (MBSFN) areas in the same eMBMS service area. These MBSFN areas provide the same. eMBMS service, or additional eMBMS service of other service areas (ie, the MBSFN area is located at the intersection of two service areas).

It is assumed that the User Equipment (UE) of the Radio Resource Control (RRC) idle state is in the cell A of the base station 1 of the MBMS service area A, and it is receiving or interested in the eMBMS service being TMGI-1. When the UE detects that the quality of the service signal of the cell A is poor due to the movement, that is, the signal quality of the neighboring cell is better than that of the serving cell, the UE performs cell reselection at this time. The cell A has provided information about cell reselection through SIB3, SIB4, and SIB5 (SIB3 provides cell co-frequency and inter-frequency reselection information; SIB4 provides a set list of co-frequency neighbor cells for UE to perform cell reselection selection; SIB5 Providing a set list of inter-cells of different frequencies for the UE to perform cell reselection selection) and SIB15 provided by the cell A (SIB15 provides the multicast industry of the current cell) The service area Identities (SAI) and the SAI and frequency points of the broadcast neighboring area carry the same-frequency MBMS service area list and the inter-frequency MBMS service area list, and the UE can receive the application layer. User Service Description (USD), where USD contains the frequency point corresponding to TMGI-1 and SAI. In the prior art, it can be determined by the above information to which frequency point the UE reselects to continue to receive the eMBMS service TMGI-1, but there are many cells satisfying the UE reselection principle at the frequency, such as providing the eMBMS service TMGI-1. The neighboring cell provides neighboring cells of other eMBMS services, and may also be a unicast cell detected during cell reselection. The terminal cannot accurately know which cell provides which programs in which frequency. If the UE reselects the cell that does not provide the eMBMS service TMGI-1, the UE may not be able to guarantee the eMBMS service that is of interest or ongoing by the UE, thereby affecting the continuity of the eMBMS service.

Summary of the invention

An object of the present invention is to provide a method, a device, a terminal, and a base station for cell handover, which solve the problem that the continuity of the eMBMS service of the terminal cannot be guaranteed when the cell handover is performed.

In order to achieve the above object, an embodiment of the present invention provides a method for cell handover, which is applied to a terminal, where the method includes:

Receiving the cell reselection information sent by the base station where the serving cell is located when the signal quality of the serving cell in the serving cell is lower than a preset value, where the cell reselection information carries: the serving cell a physical cell identifier of the neighboring cell, a frequency point of the neighboring cell, and a service area identifier SAI corresponding to the evolved multimedia broadcast multicast eMBMS service supported by the neighboring cell;

Determining a target cell to be switched according to a frequency point of the neighboring cell in the cell reselection information;

And if the to-be-switched target cell supports the eMBMS service currently performed by the terminal, the serving cell switches to the to-be-switched target cell.

In the above solution, the step of determining a target cell to be switched according to the frequency of the neighboring cell in the cell reselection information includes:

Determining the to-be-switched according to a priority of a frequency point of a neighboring cell in the cell reselection information The target cell, wherein the frequency of the target cell to be switched has a higher priority than the frequency of the other neighboring cells.

In the above solution, if the target cell to be switched supports the eMBMS service currently performed by the terminal, the step of switching from the serving cell to the target cell to be switched includes:

According to the physical cell identifier of the target cell to be switched, the physical cell identifier of the neighboring cell of the serving cell, the frequency of the neighboring cell, and the eMBMS service supported by the neighboring cell are carried by the cell reselection information. Determining, in the corresponding relationship of the SAI, the SAI corresponding to the eMBMS service supported by the target cell to be switched;

If the SAI corresponding to the eMBMS service supported by the target cell to be switched has at least one SAI corresponding to the eMBMS service currently performed by the terminal, determining that the target cell to be switched supports the eMBMS service currently performed by the terminal, and Switching from the serving cell to the target cell to be handed over.

In the foregoing solution, the foregoing method for cell handover further includes:

If the SAI corresponding to the eMBMS service supported by the target cell to be switched is not the same as the SAI corresponding to the current eMBMS service, the target cell to be switched is re-determined according to the priority of the frequency of the other neighboring cell, and The priority of the frequency point of the re-determined target cell to be switched is higher than the priority of the other frequency points of the other neighboring cells that are not determined as the target cell to be handed over.

In the above solution, the correspondence between the physical cell identifier of the neighboring cell of the serving cell, the frequency of the neighboring cell, and the SAI corresponding to the eMBMS service supported by the neighboring cell is pre-configured.

The embodiment of the invention further provides a device for cell handover, which is applied to the terminal, and includes:

The receiving module is configured to receive cell reselection information sent by the base station where the serving cell is located when the signal quality of the serving cell of the terminal is lower than a preset value, where the cell reselection information carries : a physical cell identifier of the neighboring cell of the serving cell, the neighboring small a frequency point of the area and a service area identifier SAI corresponding to the evolved multimedia broadcast multicast eMBMS service supported by the neighboring cell;

a determining module, configured to determine, according to a frequency point of the neighboring cell in the cell reselection information, a target cell to be switched;

And a handover module, configured to: if the to-be-switched target cell supports the eMBMS service currently performed by the terminal, the serving cell switches to the to-be-switched target cell.

In the foregoing solution, the determining module is further configured to determine, according to a priority of a frequency point of a neighboring cell in the cell reselection information, the target cell to be switched, where the frequency of the target cell to be switched is The priority is higher than the priority of the frequency of other neighboring cells.

In the above solution, the switching module includes:

a first determining unit, configured to: according to the physical cell identifier of the target cell to be switched, the physical cell identifier of the neighboring cell of the serving cell, the frequency of the neighboring cell, and the Determining, in the corresponding relationship of the SAI corresponding to the eMBMS service supported by the neighboring cell, the SAI corresponding to the eMBMS service supported by the target cell to be switched;

a second determining unit, configured to: if the SAI corresponding to the eMBMS service supported by the target cell to be switched has at least one SAI corresponding to the eMBMS service currently performed by the terminal, determining that the target cell to be switched supports the terminal The ongoing eMBMS service is switched by the serving cell to the target cell to be handed over.

In the above solution, the switching module further includes:

a reselecting unit, configured to: if the SAIs corresponding to the eMBMS services supported by the target cell to be switched are not the same as the SAIs corresponding to the eMBMS services currently performed by the terminal, redetermining according to priorities of frequency points of other neighboring cells The target cell to be switched, and the frequency of the re-determined target cell to be switched has a higher priority than the frequency of the other neighboring cells that are not determined to be the target cell to be handed over.

In the above solution, the physical cell identifier of the neighboring cell of the serving cell, and the neighboring cell The correspondence between the frequency point and the SAI corresponding to the eMBMS service supported by the neighboring cell is pre-configured.

The embodiment of the present invention further provides a terminal, including the apparatus for cell handover applied to the terminal as described above.

The embodiment of the invention further provides a method for cell handover, which is applied to a base station, and includes:

Acquiring the cell reselection information, where the cell reselection information carries the physical cell identifier of the neighboring cell where the terminal is currently located, the frequency of the neighboring cell, and the evolved multimedia broadcast multicast eMBMS service supported by the neighboring cell Corresponding service area identifier SAI, where the serving cell where the terminal is currently located is a cell of the base station;

Obtaining a triggering instruction, and sending the cell reselection information to the terminal according to the triggering instruction, so that the terminal determines a target cell to be switched according to a frequency point of a neighboring cell in the cell reselection information. And when the to-be-switched target cell supports the eMBMS service currently performed by the terminal, the serving cell switches to the target cell to be handed over.

In the above solution, the step of obtaining a trigger instruction includes:

Sending a request for setting the cell reselection information to the base station where the neighboring cell is located;

Obtaining, by the base station where the neighboring cell is located, a setting response of the cell reselection information returned according to the setting request of the cell reselection information, and generating the triggering instruction according to the setting response of the cell reselection information.

In the above solution, the step of obtaining a trigger instruction includes:

When the eMBMS service attribute of the serving cell where the terminal is currently located changes, the configuration update signaling of the cell reselection information is sent to the base station where the neighboring cell is located;

Acquiring a configuration update confirmation command of the cell reselection information sent by the base station where the neighboring cell is located according to the configuration of the cell reselection information, and generating the trigger instruction according to the configuration update confirmation command of the cell reselection information .

In the above solution, the step of obtaining a trigger instruction includes:

Obtaining an eMBMS cell establishment instruction, and generating the trigger instruction according to the eMBMS cell establishment instruction, where the eMBMS cell establishment instruction is an eMBMS cell new instruction or an eMBMS cell reestablishment instruction.

The embodiment of the invention further provides a device for cell handover, which is applied to a base station, and includes:

a first acquiring module, configured to acquire cell reselection information, where the cell reselection information carries a physical cell identifier of a neighboring cell where the terminal is currently located, a frequency point of the neighboring cell, and a supported by the neighboring cell a service area identifier SAI corresponding to the evolved multimedia broadcast multicast eMBMS service, where the serving cell where the terminal is currently located is a cell of the base station;

The second obtaining module is configured to obtain a triggering command, and send the cell reselection information to the terminal according to the triggering instruction, so that the terminal according to the frequency of the neighboring cell in the cell reselection information Determining a target cell to be handed over, and when the target cell to be handed over supports the eMBMS service currently performed by the terminal, the serving cell switches to the target cell to be handed over.

In the above solution, the second obtaining module includes:

The first sending unit is configured to send a setting request of the cell reselection information to the base station where the neighboring cell is located;

a first acquiring unit, configured to acquire a setting response of the cell reselection information returned by the base station where the neighboring cell is located according to the setting request of the cell reselection information, and generate the trigger according to the setting response of the cell reselection information instruction.

In the above solution, the second obtaining module includes:

a second sending unit, configured to: when the eMBMS service attribute of the serving cell where the terminal is currently located changes, send configuration update signaling of the cell reselection information to the base station where the neighboring cell is located;

a second acquiring unit, configured to acquire a configuration update confirmation command of the cell reselection information sent by the base station where the neighboring cell is located according to the configuration update signaling of the cell reselection information, and according to the The configuration update confirmation command of the cell reselection information generates the trigger instruction.

In the above solution, the second obtaining module includes:

And a third acquiring unit, configured to acquire an eMBMS cell establishment instruction, and generate the triggering instruction according to the eMBMS cell establishment instruction, where the eMBMS cell establishment instruction is an eMBMS cell new instruction or an eMBMS cell reestablishment instruction.

An embodiment of the present invention further provides a base station, including the apparatus for cell handover applied to a base station as described above.

Embodiments of the present invention have the following beneficial effects:

In the embodiment of the present invention, when the signal quality of the serving cell of the terminal is lower than a preset value, the cell reselection information sent by the base station is received, and the target to be switched is determined according to the frequency point in the cell reselection information. And determining, by the cell according to the cell reselection information, whether the target cell to be switched supports, according to the cell reselection information, when the cell to be switched supports the eMBMS service currently being performed by the terminal to be switched. The eMBMS service currently performed by the terminal effectively ensures the continuity of the eMBMS service when the terminal performs cell handover.

DRAWINGS

FIG. 1 is a first working flowchart of a method for cell handover according to an embodiment of the present invention;

2 is a block diagram showing a first structure of an apparatus for cell handover according to an embodiment of the present invention;

FIG. 3 is a second working flowchart of a method for cell handover according to an embodiment of the present invention;

FIG. 4 is a schematic diagram showing the configuration of a single base station in a method for cell handover according to an embodiment of the present invention;

FIG. 5 is a schematic diagram showing the configuration of two adjacent base stations in a method for cell handover according to an embodiment of the present invention;

FIG. 6 is a schematic diagram showing a first flow of triggering cell reselection information in a cell handover method according to an embodiment of the present invention;

FIG. 7 is a schematic diagram showing a second flow of triggering cell reselection information in a method for cell handover according to an embodiment of the present invention;

FIG. 8 is a diagram showing a method for triggering cell reselection in a cell handover method according to an embodiment of the present invention. The third process diagram;

FIG. 9 is a block diagram showing a second structure of an apparatus for cell handover according to an embodiment of the present invention.

detailed description

In order to make the technical problems, technical solutions and advantages of the present invention more clear, the following detailed description will be made in conjunction with the specific embodiments and the accompanying drawings.

The embodiment of the invention provides a method, a device, a terminal, a base station and a storage medium for cell handover, which solves the problem that the continuity of the eMBMS service of the terminal cannot be guaranteed when the cell handover is performed.

The method for cell handover in the embodiment of the present invention is applied to a terminal, as shown in FIG. 1 , and includes:

Step S11: Receive, when the signal quality of the serving cell of the terminal is lower than a preset value, the cell reselection information sent by the base station where the serving cell is located, where the cell reselection information carries: The physical cell identifier of the neighboring cell of the serving cell, the frequency of the neighboring cell, and the service area identifier SAI corresponding to the evolved multimedia broadcast multicast eMBMS service supported by the neighboring cell.

Step S12: Determine a target cell to be switched according to a frequency point of the neighboring cell in the cell reselection information.

Step S13: If the to-be-switched target cell supports the eMBMS service currently performed by the terminal, the serving cell switches to the to-be-switched target cell.

In a specific embodiment of the present invention, the cell reselection information may be specifically a SIB15 message. In the embodiment of the present invention, by modifying the content carried in the SIB15 message, the PCI is added to the corresponding relationship between the original frequency point and the SAI, and is formed into a frequency point. Corresponding relationship between PCI and SAI, the terminal forms a preset relationship table for cell reselection according to the correspondence between the frequency point, the PCI, and the SAI, and the terminal in the RRC idle state knows exactly which frequency is according to the cell reselection information. Which cell provides which programs to ensure that the terminal can accurately switch to the cell supporting the eMBMS service currently performed by the terminal when performing cell handover, thereby ensuring the continuity of the terminal eMBMS service.

Further, the step S12 includes:

Determining, according to the priority of the frequency of the neighboring cell in the cell reselection information, the target cell to be switched, wherein the frequency of the target cell to be switched has a higher priority than the frequency of other neighboring cells level.

In the embodiment of the present invention, the neighboring cell with the highest frequency priority is selected as the target cell to be switched in the multiple neighboring cells of the serving cell according to the priority of the frequency of the neighboring cell, thereby effectively ensuring the signal service of the target cell to be switched. Quality improves the user experience.

Further, the step S13 includes:

Specifically, the correspondence between the physical cell identifier of the neighboring cell of the serving cell, the frequency of the neighboring cell, and the SAI corresponding to the eMBMS service supported by the neighboring cell is pre-configured, when the user equipment (User Experience) (UE), when the mobile station detects that the service signal quality of the serving cell is poor, selects a target cell to be switched according to the frequency priority, and determines, according to the preset relationship table, whether the target cell to be switched supports the eMBMS service currently performed by the terminal. And when supporting, switch to the target cell to be switched, and ensure the continuity of the terminal eMBMS service.

Further, the method for cell handover in the embodiment of the present invention further includes:

If the SAI corresponding to the eMBMS service supported by the target cell to be switched does not include the end The SAI corresponding to the current eMBMS service is re-determined according to the priority of the frequency of the other neighboring cells, and the frequency of the re-determined target cell to be switched has a higher priority than the other neighboring cells. The remaining ones are not determined as the priority of the frequency of the target cell to be switched.

In a specific implementation of the present invention, when the neighboring cell with the highest frequency level is not supported by the foregoing corresponding relationship table, the cell with the highest frequency priority is reselected as the target to be switched in the remaining neighboring cells. The cell is selected until a multicast neighboring cell supporting the eMBMS service currently being performed by the terminal is selected.

The embodiment of the present invention further provides a first computer readable storage medium, the storage medium comprising a set of instructions for performing the method of cell handover shown in FIG.

The embodiment of the present invention further provides a device for cell handover, which is applied to a terminal, as shown in FIG. 2, and includes:

The receiving module 21 is configured to receive cell reselection information sent by the base station where the serving cell is located when the signal quality of the serving cell of the terminal is lower than a preset value, where the cell reselection information carries The physical cell identifier of the neighboring cell of the serving cell, the frequency of the neighboring cell, and the service area identifier SAI corresponding to the evolved multimedia broadcast multicast eMBMS service supported by the neighboring cell;

The determining module 22 is configured to determine, according to a frequency point of the neighboring cell in the cell reselection information, a target cell to be switched;

The switching module 23 is configured to switch from the serving cell to the to-be-switched target cell if the target cell to be switched supports the eMBMS service currently performed by the terminal.

In the device for cell handover according to the embodiment of the present invention, the determining module 22 is further configured to determine the target cell to be switched according to a priority of a frequency point of a neighboring cell in the cell reselection information, where The frequency of the target cell to be switched has a higher priority than the frequency of the other neighboring cells.

In the device for cell handover according to the embodiment of the present invention, the switching module 23 includes:

In the device for cell handover according to the embodiment of the present invention, the switching module further includes:

In the device for cell handover according to the embodiment of the present invention, the correspondence between the physical cell identifier of the neighboring cell of the serving cell, the frequency of the neighboring cell, and the SAI corresponding to the eMBMS service supported by the neighboring cell is Pre-configured.

It should be understood by those skilled in the art that the functions of the processing modules in the device for cell handover in the embodiment of the present invention can be understood by referring to the foregoing description of the method for cell handover applied to the terminal, and the cell applied to the terminal in the embodiment of the present invention. Each of the processing modules in the switching device may be implemented by an analog circuit that implements the functions described in the embodiments of the present invention, or may be implemented by running software running the functions described in the embodiments of the present invention on the smart terminal.

In a practical application, the receiving module 21, the determining module 22, and the switching module 23 may be configured by a central processing unit (CPU) or digital signal processing (DSP, The digital signal processor or the Field Programmable Gate Array (FPGA) is implemented; the CPU, the DSP, and the FPGA may be built in the device for the cell switching applied to the terminal.

Embodiments of the present invention also provide a terminal, including the apparatus for cell handover applied to a terminal as described above.

It should be noted that the device and the terminal are devices and terminals corresponding to the foregoing method embodiments. All the implementation manners in the foregoing method embodiments are applicable to the device and the terminal embodiment, and the same technical effects can be achieved.

The embodiment of the present invention further provides a method for cell handover, which is applied to a base station, as shown in FIG. 3, and includes:

Step S31: Acquire cell reselection information, where the cell reselection information carries the physical cell identifier of the neighboring cell where the terminal is currently located, the frequency of the neighboring cell, and the evolved multimedia broadcast supported by the neighboring cell. Broadcasting the service area identifier SAI corresponding to the eMBMS service, where the serving cell where the terminal is currently located is the cell of the base station;

Step S32: Acquire a triggering instruction, and send the cell reselection information to the terminal according to the triggering instruction, so that the terminal determines, according to the frequency point of the neighboring cell in the cell reselection information, And switching the target cell, and when the target cell to be switched supports the eMBMS service currently performed by the terminal, the serving cell switches to the target cell to be switched.

In a specific embodiment of the present invention, the cell reselection information is specifically an SIB15 message, and the base station obtains the SIB15 message from the preset configuration information. FIG. 4 is a schematic diagram of a configuration of a single base station, where the configuration information includes: a neighbor of the serving cell. The physical cell identifier of the cell (such as the cell cell 2), the frequency of the neighboring cell (not shown in the figure), and the SAI corresponding to the eMBMS service supported by the neighboring cell (for example, the SAI corresponding to the eMBMS service supported by the cell 2 is 1 and 2), the physical cell identifier of the serving cell (cell1) and the SAI corresponding to the eMBMS service supported by the serving cell (the SAIs corresponding to the eMBMS service supported by the cell1 are 1 and 2); FIG. 5 is the adjacent connection through the X2 interface. A configuration diagram of a base station, where the serving cell in the base station 1 is the cell Cell1, the SAI corresponding to the eMBMS service supported by the Cell1 is 1 and 2, and the neighboring cells in the Cell1 are Cell2, Cell3, and Cell4, and the eMBMS service supported by the Cell2 corresponds to The SAI is 1 and 2, and the SAI corresponding to the eMBMS service supported by Cell3 is 1; the SAI corresponding to the eMBMS service supported by Cell4 is 3.

In the embodiment of the present invention, the SIB15 message is modified, and the PCI is added to the corresponding relationship between the original frequency point and the SAI, and the corresponding relationship between the frequency point, the PCI, and the SAI is formed, so that the terminal can determine which frequency according to the SIB15 message sent by the base station. Which program is provided in which cell, thus ensuring the continuity of the terminal eMBMS service.

In a specific embodiment of the present invention, the base station may obtain the triggering command and trigger the sending of the cell reselection information in three manners.

method one:

In this implementation, the triggering instruction is obtained by the interaction between two adjacent base stations, and the cell reselection information is delivered according to the triggering instruction. Specifically, the base station 1 and the base station 2 are neighboring base stations connected through the X2 interface, and the setting request of the cell reselection information is an X2 interface setting request, and the setting response of the cell reselection information is an X2 interface setting response, then acquiring The step of triggering the instruction and triggering the cell reselection message to be delivered, as shown in FIG. 6, includes:

Step 61: The base station 1 initiates an X2 interface setting request after satisfying the X2 interface establishment request.

Step 62: After receiving the X2 interface setting request, the base station 2 sends an X2 interface setting response to the base station 1;

Step 63: The base station 1 receives the X2 interface setting response, and uses the setting response as a triggering instruction, and triggers the cell reselection information to be sent to the user equipment.

Method 2:

The details are as follows.

During the operation of the system, it is assumed that the network management system performs the modification of the eMBMS service attribute of the serving cell of the terminal in the base station 1. At this time, the triggering instruction is obtained through the configuration update process of the X2 interface between the base station 1 and the base station 2, and the cell weight is triggered. The selected information is delivered, as shown in Figure 7, including:

Step 71: The network management modifies the relevant attributes of the serving cell eMBMS service, and the base station 1 sends the X2 interface configuration update signaling to the base station 2;

Step 72: After receiving the X2 interface configuration update signaling, the base station 2 decodes and acquires the neighboring cell information configured by the relevant base station 2 carried in the signaling, and broadcasts information such as the neighboring area SAI through the SIB15.

Step 73: The base station 1 receives the X2 interface configuration update acknowledgement signaling, and uses the X2 interface configuration update acknowledgement signaling as a trigger command to trigger the cell reselection information to be sent to the user equipment.

Method three:

As shown in FIG. 8, the steps of acquiring the triggering command and triggering cell reselection and delivering include:

Step 81: Acquire an eMBMS cell establishment instruction, and generate the trigger instruction according to the eMBMS cell establishment instruction, where the eMBMS cell establishment instruction is an eMBMS cell new instruction or an eMBMS cell reconstruction instruction.

Step 82: The cell reselection information is triggered and sent to the user equipment by using the triggering instruction.

Of course, the foregoing is merely an example, and the triggering instructions are also obtained by other means, which are not illustrated here.

In the method for cell handover in the embodiment of the present invention, the embodiment of the present invention adds a PCI to the corresponding relationship between the original frequency point and the SAI by modifying the SIB15 message, and forms a correspondence relationship between the frequency point, the PCI, and the SAI, so that the terminal can The SIB15 message sent by the base station determines which program provides which programs in which frequency, thereby ensuring the continuity of the terminal eMBMS service.

The embodiment of the present invention further provides a second computer readable storage medium, the storage medium comprising a set of instructions for performing the method of cell handover shown in FIG.

The embodiment of the present invention further provides a device for cell handover, which is applied to a base station, as shown in FIG. 9, and includes:

The first obtaining module 91 is configured to acquire cell reselection information, where the cell reselection information carries a physical cell identifier of a neighboring cell where the terminal is currently located, a frequency point of the neighboring cell, and the neighboring cell support. The service area identifier SAI corresponding to the evolved multimedia broadcast multicast eMBMS service, where the serving cell where the terminal is currently located is the cell of the base station;

The second obtaining module 92 is configured to acquire a triggering command, and send the cell reselection information to the terminal according to the triggering instruction, so that the terminal according to the frequency of the neighboring cell in the cell reselection information And determining, by the target cell, a handover target cell, and when the to-be-switched target cell supports the eMBMS service currently performed by the terminal, the serving cell switches to the to-be-switched target cell.

The device for cell handover in the embodiment of the present invention, the second acquiring module 92 includes:

a second sending unit configured to be in the eMBMS industry of the serving cell where the terminal is currently located When the service attribute changes, the configuration update signaling of the cell reselection information is sent to the base station where the neighboring cell is located;

a second acquiring unit, configured to acquire a configuration update confirmation command of the cell reselection information sent by the base station where the neighboring cell is located according to the configuration update signaling of the cell reselection information, and update according to the configuration of the cell reselection information The confirmation command generates the trigger instruction.

A person skilled in the art should understand that the functions of the processing modules in the device for cell handover in the embodiment of the present invention can be understood by referring to the foregoing description of the method for cell handover applied to the base station, and the cell applied to the base station in the embodiment of the present invention. Each of the processing modules in the switching device may be implemented by an analog circuit that implements the functions described in the embodiments of the present invention, or may be implemented by running software running the functions described in the embodiments of the present invention on the smart terminal.

In an actual application, the first obtaining module 91 and the second acquiring module 92 may each be a central processing unit (CPU), or a digital signal processing (DSP), or a field programmable gate. An FPGA (Field Programmable Gate Array) or the like is implemented; the CPU, the DSP, and the FPGA may be built in a device applied to a cell handover of a base station.

Embodiments of the present invention also provide a base station, including the apparatus for cell handover applied to a base station as described above.

It should be noted that the device and the base station are the device and the base station corresponding to the foregoing method embodiments. All the implementation manners in the foregoing method embodiments are applicable to the device and the base station, and the same technical effects can be achieved.

Method, device, terminal, base station and storage medium for cell handover according to embodiments of the present invention When the signal quality of the serving cell currently located in the terminal is lower than a preset value, the cell reselection information sent by the base station is received, and a target cell to be switched is determined according to the frequency point in the cell reselection information, and then When the target cell to be switched supports the eMBMS service currently performed by the terminal, the serving cell switches to the target cell to be switched. In the embodiment of the present invention, it is determined whether the target cell to be switched supports the eMBMS service currently performed by the terminal according to the cell reselection information. It effectively ensures the continuity of the eMBMS service when the terminal performs cell handover.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on the computer or other programmable device to produce the computer The implemented processing, such as instructions executed on a computer or other programmable device, provides steps for implementing the functions specified in one or more blocks of the flowchart or in a block or blocks of the flowchart.

The above is only an embodiment of the embodiments of the present invention, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the embodiments of the present invention. Retouching should also be considered as the scope of protection of the embodiments of the present invention.

Industrial applicability

In the embodiment of the present invention, when the signal quality of the serving cell of the terminal is lower than a preset value, the cell reselection information sent by the base station is received, and the target to be switched is determined according to the frequency point in the cell reselection information. The cell, then, when the to-be-switched target cell supports the eMBMS service currently performed by the terminal, the serving cell switches to the target cell to be switched, so that the embodiment of the present invention can determine the target to be switched according to the cell reselection information. Whether the cell supports the eMBMS service currently performed by the terminal, and effectively ensures the continuity of the eMBMS service when the terminal performs cell handover.

Claims

A method for cell handover is applied to a terminal, and the method includes:

Receiving the cell reselection information sent by the base station where the serving cell is located when the signal quality of the serving cell in the serving cell is lower than a preset value, where the cell reselection information carries: the serving cell a physical cell identifier of the neighboring cell, a frequency point of the neighboring cell, and a service area identifier SAI corresponding to the evolved multimedia broadcast multicast eMBMS service supported by the neighboring cell;

Determining a target cell to be switched according to a frequency point of the neighboring cell in the cell reselection information;

And if the to-be-switched target cell supports the eMBMS service currently performed by the terminal, the serving cell switches to the to-be-switched target cell.
The method for cell handover according to claim 1, wherein the step of determining a target cell to be switched according to a frequency point of a neighboring cell in the cell reselection information comprises:

Determining, according to the priority of the frequency of the neighboring cell in the cell reselection information, the target cell to be switched, wherein the frequency of the target cell to be switched has a higher priority than the frequency of other neighboring cells level.
The method for cell handover according to claim 1, wherein if the target cell to be handed over supports the eMBMS service currently performed by the terminal, the step of switching from the serving cell to the target cell to be switched includes :

According to the physical cell identifier of the target cell to be switched, the physical cell identifier of the neighboring cell of the serving cell, the frequency of the neighboring cell, and the eMBMS service supported by the neighboring cell are carried by the cell reselection information. Determining, in the corresponding relationship of the SAI, the SAI corresponding to the eMBMS service supported by the target cell to be switched;

If the SAI corresponding to the eMBMS service supported by the target cell to be switched has at least one SAI corresponding to the eMBMS service currently performed by the terminal, determining that the target cell to be switched supports the eMBMS service currently performed by the terminal, and Switching from the serving cell to the target cell to be handed over.
The method for cell handover according to claim 3, further comprising:

If the SAI corresponding to the eMBMS service supported by the target cell to be switched is not the same as the SAI corresponding to the current eMBMS service, the target cell to be switched is re-determined according to the priority of the frequency of the other neighboring cell, and The priority of the frequency point of the re-determined target cell to be switched is higher than the priority of the other frequency points of the other neighboring cells that are not determined as the target cell to be handed over.
The method for cell handover according to claim 3, wherein the correspondence between the physical cell identifier of the neighboring cell of the serving cell, the frequency of the neighboring cell, and the SAI corresponding to the eMBMS service supported by the neighboring cell It is pre-configured.
A device for cell handover is applied to a terminal, including:

The receiving module is configured to receive cell reselection information sent by the base station where the serving cell is located when the signal quality of the serving cell of the terminal is lower than a preset value, where the cell reselection information carries The physical cell identifier of the neighboring cell of the serving cell, the frequency of the neighboring cell, and the service area identifier SAI corresponding to the evolved multimedia broadcast multicast eMBMS service supported by the neighboring cell;

a determining module, configured to determine, according to a frequency point of the neighboring cell in the cell reselection information, a target cell to be switched;

And a handover module, configured to: if the to-be-switched target cell supports the eMBMS service currently performed by the terminal, the serving cell switches to the to-be-switched target cell.
The apparatus for cell handover according to claim 6, wherein

The determining module is further configured to determine, according to a priority of a frequency point of the neighboring cell in the cell reselection information, the target cell to be switched, where a frequency of the target cell to be switched has a higher priority The priority of the frequency of other neighboring cells.
The apparatus for cell handover according to claim 6, wherein the switching module comprises:

a first determining unit, configured to: according to the physical cell identifier of the target cell to be switched, Determining the to-be-switched in the correspondence between the physical cell identifier of the neighboring cell of the serving cell, the frequency of the neighboring cell, and the SAI corresponding to the eMBMS service supported by the neighboring cell, The SAI corresponding to the eMBMS service supported by the target cell;

a second determining unit, configured to: if the SAI corresponding to the eMBMS service supported by the target cell to be switched has at least one SAI corresponding to the eMBMS service currently performed by the terminal, determining that the target cell to be switched supports the terminal The ongoing eMBMS service is switched by the serving cell to the target cell to be handed over.
The apparatus for cell handover according to claim 8, wherein the switching module further comprises:

a reselecting unit, configured to: if the SAIs corresponding to the eMBMS services supported by the target cell to be switched are not the same as the SAIs corresponding to the eMBMS services currently performed by the terminal, redetermining according to priorities of frequency points of other neighboring cells The target cell to be switched, and the frequency of the re-determined target cell to be switched has a higher priority than the frequency of the other neighboring cells that are not determined to be the target cell to be handed over.
The apparatus for cell handover according to claim 8, wherein a correspondence between a physical cell identifier of a neighboring cell of the serving cell, a frequency of the neighboring cell, and a SAI corresponding to an eMBMS service supported by the neighboring cell It is pre-configured.
A terminal comprising the apparatus for cell handover according to any one of claims 6-10.
A method for cell handover is applied to a base station, and the method includes:

Acquiring the cell reselection information, where the cell reselection information carries the physical cell identifier of the neighboring cell where the terminal is currently located, the frequency of the neighboring cell, and the evolved multimedia broadcast multicast eMBMS service supported by the neighboring cell Corresponding service area identifier SAI, where the serving cell where the terminal is currently located is a cell of the base station;

Obtaining a triggering instruction, and sending the cell reselection information to the terminal according to the triggering instruction, so that the terminal determines, according to a frequency point of a neighboring cell in the cell reselection information, When the target cell is to be switched, and the target cell to be switched supports the eMBMS service currently performed by the terminal, the serving cell switches to the target cell to be handed over.
The method of cell handover according to claim 12, wherein the step of acquiring a triggering instruction comprises:

Sending a request for setting the cell reselection information to the base station where the neighboring cell is located;

Obtaining, by the base station where the neighboring cell is located, a setting response of the cell reselection information returned according to the setting request of the cell reselection information, and generating the triggering instruction according to the setting response of the cell reselection information.
The method of cell handover according to claim 12, wherein the step of acquiring a triggering instruction comprises:

When the eMBMS service attribute of the serving cell where the terminal is currently located changes, the configuration update signaling of the cell reselection information is sent to the base station where the neighboring cell is located;

Acquiring a configuration update confirmation command of the cell reselection information sent by the base station where the neighboring cell is located according to the configuration of the cell reselection information, and generating the trigger instruction according to the configuration update confirmation command of the cell reselection information .
The method of cell handover according to claim 12, wherein the step of acquiring a triggering instruction comprises:

Obtaining an eMBMS cell establishment instruction, and generating the trigger instruction according to the eMBMS cell establishment instruction, where the eMBMS cell establishment instruction is an eMBMS cell new instruction or an eMBMS cell reestablishment instruction.
A device for cell handover is applied to a base station, including:

a first acquiring module, configured to acquire cell reselection information, where the cell reselection information carries a physical cell identifier of a neighboring cell where the terminal is currently located, a frequency point of the neighboring cell, and a supported by the neighboring cell a service area identifier SAI corresponding to the evolved multimedia broadcast multicast eMBMS service, where the serving cell where the terminal is currently located is a cell of the base station;

The second obtaining module is configured to obtain a triggering command, and send the cell reselection information to the terminal according to the triggering instruction, so that the terminal according to the frequency of the neighboring cell in the cell reselection information Determining a target cell to be handed over, and when the target cell to be handed over supports the eMBMS service currently performed by the terminal, the serving cell switches to the target cell to be handed over.
The apparatus for cell handover according to claim 16, wherein the second obtaining module comprises:

The first sending unit is configured to send a setting request of the cell reselection information to the base station where the neighboring cell is located;

a first acquiring unit, configured to acquire a setting response of the cell reselection information returned by the base station where the neighboring cell is located according to the setting request of the cell reselection information, and generate the trigger according to the setting response of the cell reselection information instruction.
The apparatus for cell handover according to claim 16, wherein the second obtaining module comprises:

a second sending unit, configured to: when the eMBMS service attribute of the serving cell where the terminal is currently located changes, send configuration update signaling of the cell reselection information to the base station where the neighboring cell is located;

a second acquiring unit, configured to acquire a configuration update confirmation command of the cell reselection information sent by the base station where the neighboring cell is located according to the configuration update signaling of the cell reselection information, and update according to the configuration of the cell reselection information The confirmation command generates the trigger instruction.
The apparatus for cell handover according to claim 16, wherein the second obtaining module comprises:

And a third acquiring unit, configured to acquire an eMBMS cell establishment instruction, and generate the triggering instruction according to the eMBMS cell establishment instruction, where the eMBMS cell establishment instruction is an eMBMS cell new instruction or an eMBMS cell reestablishment instruction.
A base station comprising the apparatus for cell handover according to any one of claims 16-19.
A first computer readable storage medium comprising a set of instructions for performing the method of cell handover of any one of claims 1 to 5.
A second computer readable storage medium comprising a set of instructions for performing the method of cell handover as claimed in any one of claims 12 to 15.