WO2017020591A1

WO2017020591A1 - Method of implementing continuous reception in enhanced multimedia broadcast multicast service and terminal utilizing same

Info

Publication number: WO2017020591A1
Application number: PCT/CN2016/076928
Authority: WO
Inventors: 王志
Original assignee: 深圳市中兴微电子技术有限公司
Priority date: 2015-08-03
Filing date: 2016-03-21
Publication date: 2017-02-09
Also published as: CN106412844A; CN106412844B

Abstract

The invention discloses a method of implementing continuous reception in an enhanced multimedia broadcast multicast service (eMBMS) and a terminal utilizing the same. The method comprises: adjusting, by a user equipment (UE), according to a user service description (USD) and system information, a frequency reselection priority, and then performing a measurement to obtain a measurement result; when it is determined, according to the measurement result, that a neighboring cell employing a present eMBMS frequency satisfies a reselection condition, determining the neighboring cell employing the present eMBMS frequency to be a target cell; before reselecting the target cell, predetermining, according to a predefined rule, a cell reselection to obtain a determination result, wherein the determination result comprises: when system information corresponding to the target cell comprises associated system information of a present eMBMS service, identifying the target cell as a reselection target cell, and performing a cell reselection process on the reselection target cell using a top priority.

Description

Method and terminal for implementing continuous receiving of enhanced multimedia broadcast multicast service

Technical field

The present invention relates to a receiving technology, and in particular, to a method and a terminal for implementing continuous receiving of an enhanced multimedia broadcast multicast service (eMBMS).

Background technique

In the process of implementing the technical solutions of the embodiments of the present application, at least the following technical problems exist in the related technologies:

eMBMS is a broadcast multicast technology based on the 3GPP R9 protocol and is one of the most efficient video bearer technologies in the mobile field. eMBMS has more bandwidth and can provide more channels and content, which makes the picture clearer and smoother, and the user experience is better. As shown in FIG. 1 , a typical eMBMS network architecture includes: an MME, an MBMS-GW, an MCE, an eNB, and an interface M1, M2, and M3 connected thereto. The MME is an abbreviation of a mobility management entity, and is called a Mobility Management Entity. MBMS-GW is the abbreviation of Multimedia Broadcast Multicast Service Gateway. MCE is the abbreviation of Multi-cell/Multicast Coordination Entity, which is called Multi-cell/multicast Coordination Entity. eNB is the abbreviation of Enhanced Base Station, which is EUTRA NodeB; M1 refers to user. User plane interface, M2 refers to the E-UTRAN internal control plane interface, and M3 refers to the control plane interface between the evolved universal terrestrial radio and the core network. Between E-UTRAN and EPC).

In the above structure shown in FIG. 1, in addition to the existing MME and eNB, two network elements are newly added: MCE and MBMS-GW. In the network structure, the MCE can be used as a single network element or integrated in other network elements. It mainly performs access control and radio resource allocation of multiple cells in MBSFN mode, and performs eMBMS session control. The MBMS-GW is also a logical entity. The main function is to send or broadcast data to an eNB that performs eMBMS content transmission using an IP multicast protocol, and execute an eMBMS session control command (session start and stop) sent by the MME, thereby controlling data to the eNB. send.

In order to receive the eMBMS service, the UE needs to read the eMBMS related system information of the cell and the corresponding resource configuration information. eMBMS related system information (SystemInformation) includes:

SIB1-cell related camping parameters and scheduling information of other SIBs;

SIB2-cell resource information;

SIB13 - acquires relevant parameters of the MBMS control information;

SIB15-service frequency point and eMBMS distribution of all neighboring frequency points of the cell;

The SIB is carried in the SI block, and the scheduling period of the SI block is: SFN Mod T=0;

The T is the SI scheduling period carried by the SIB1, and the maximum value is 5210 ms. That is to say, in order to read SIB13\SIB15, in the normal situation of the wireless environment, it takes up to 5210ms to read.

With the prior art, in a practical application, the user terminal (UE) is in the mobile anytime and anywhere. Therefore, in order to ensure the continuity of the eMBMS service received by the UE, a related technical solution must be provided for guarantee. In the existing technical solutions, there are mainly two major measures: First, for an MBSFN AREA, all cells in the same have the same eMBMS resource configuration, and time synchronization, when the cell moves here, there is no need to re-obtain the MBMS from the new cell. Resources, using the resources of the original cell, can continue to receive services. Second, the user service description (USD, user service description) and the SIB 15 are used to indicate which neighbor frequency points have eMBMS services, and the UE can preferentially reselect these cells to ensure continuity of services.

However, the problem with the prior art is that in the eMBMS network, all cells on one frequency point are not all capable of providing services, or are not necessarily capable of providing the same service. Therefore, in the existing solution, the UE may still reselect to the cell that cannot continue to provide the current service, thereby causing interruption of service reception. In addition, even if the target cell reselected by the UE can continue to provide the Service, but the two may not belong to the same MBSFN area. It still takes time to read the SIB13 and obtain the corresponding MCCH control information to continue the service, which may cause interruption of service reception.

Summary of the invention

In view of this, the embodiment of the present invention is to provide a method and a terminal for implementing continuous reception of eMBMS, which at least solves the problems existing in the prior art, can avoid interruption of service reception, and ensure continuity of service reception.

The technical solution of the embodiment of the present invention is implemented as follows:

An embodiment of the present invention provides a method for continuously receiving an enhanced multimedia broadcast multicast service in an idle state, where the method includes:

The user terminal UE performs measurement according to the user service description USD and system information to adjust the frequency reselection priority, and obtains the measurement result;

And determining, according to the measurement result, that the neighboring cell on the eMBMS frequency point of the current enhanced multimedia broadcast multicast service meets the reselection condition, determining that the neighboring cell on the eMBMS frequency point is the target cell;

Before initiating a reselection to the target cell, performing a reselection pre-judgment according to a preset rule, and obtaining a judgment result;

If the judgment result is that the system information corresponding to the target cell includes related system information of the current eMBMS service, determining that the target cell is a reselection target cell, and preferentially initiating reselection processing to the reselection target cell .

In the foregoing solution, the preset rule is used to: when the UE is in an idle state, use the idle time of the UE to receive a service to pre-read eMBMS service related system information of the target cell to ensure UE reselection. The continuity of UE reception is maintained on cells with ongoing eMBMS services.

In the above solution, the UE performs measurement after adjusting the frequency reselection priority according to the user service description USD and the system information, and obtains measurement results, including:

When the system information is the SIB15, the neighboring area measurement required for normal configuration is performed, and the measurement is performed after the corresponding frequency reselection priority is adjusted to be the highest according to the USD and the SIB15, and the measurement result is obtained;

Correspondingly, the method further includes: before the UE adjusts the frequency reselection priority according to the USD and the system information, the UE camps on the eMBMS cell and starts to receive the current eMBMS service.

In the above solution, the method further includes: before the reselection to the target cell, performing a reselection pre-judgment according to a preset rule, before obtaining the judgment result,

When the unicast service priority is detected, the reselection process to the target cell is immediately initiated;

When the multicast service priority is detected, the current eMBMS service is continuously received, and the eMBMS service related system information of the target cell is read to perform reselection pre-judgment according to the preset rule; wherein the target The eMBMS service related system information of the cell includes SIB13 and/or SIB15.

In the foregoing solution, the re-selection pre-judgment according to the preset rule includes:

Determining whether the SIB 13 and/or the SIB 15 include related system information of the current eMBMS service, and if yes, performing the determining that the target cell is a reselection target cell, and preferentially initiating reselection processing to the reselection target cell Otherwise, the reselection is rejected, and the target cell is excluded as the candidate reselection target cell within the specified time period.

In the above solution, the preferentially initiating a reselection process to the reselected target cell includes:

The UE synchronizes to the reselected target cell, and first reads the system information including the SIB1 and/or the SIB2 that is necessary for the relocation, and after the residing, directly uses the previously read SIB13 to configure the MCCH. And obtaining the MCCH control information to try to continue the reception of the eMBMS service, and at the same time, reading additional system information except the SIB1 and/or SIB2, and the reselection process ends.

In the foregoing solution, the method further includes: after rejecting the reselection, the UE does not find a suitable neighbor camp, and when the service variation of the reselected target cell no longer satisfies the camp, the UE uses the UE. Said USD and the SIB15 to re-determine the target frequency, including the current eMBMS industry The neighboring cells of the service initiate a dwell to achieve priority to reside.

A terminal for continuously receiving an enhanced multimedia broadcast multicast service according to an embodiment of the present invention, where the terminal includes:

a measuring unit configured to: after the user terminal UE adjusts the frequency reselection priority according to the user service description USD and the system information, perform measurement, and obtain a measurement result;

Reselecting the determining unit, configured to determine, according to the measurement result, that the neighboring cell on the eMBMS frequency point of the current enhanced multimedia broadcast multicast service meets the reselection condition, determining that the neighboring cell on the eMBMS frequency point is the target cell; Before the reselection of the target cell, the reselection pre-judgment is performed according to the preset rule, and the judgment result is obtained; when the judgment result is that the system information corresponding to the target cell includes the relevant system information of the current eMBMS service, The target cell is a reselection target cell, and preferentially initiates a reselection process to the reselected target cell.

In the above solution, the measuring unit is further configured to perform the required neighboring area measurement when the system information is the SIB15, and perform the measurement after adjusting the corresponding frequency point reselection priority to the highest according to the USD and the SIB15. Obtaining measurement results;

The terminal further includes: a receiving unit configured to camp on the eMBMS cell and start receiving the current eMBMS service, before the UE performs measurement after adjusting the frequency reselection priority according to the USD and the system information.

In the above solution, the terminal further includes:

The cell selection unit is configured to perform a reselection pre-judgment according to a preset rule before the re-selection to the target cell, and before the determination result is obtained, when the unicast service priority is detected, the target is immediately launched. Reselection processing of the cell; when detecting that the multicast service priority is obtained, instructing the receiving unit to continue to receive the current eMBMS service, and simultaneously reading the target cell The eMBMS service related system information is pre-selected according to the preset rule; wherein the eMBMS service related system information of the target cell includes the SIB13 and/or the SIB15.

In the above solution, the reselection decision unit is further configured to determine whether the SIB 13 and/or the SIB 15 includes related system information of the current eMBMS service, and if yes, perform the determining that the target cell is a reselected target cell. Deselecting the reselection process to the reselected target cell; otherwise, rejecting the reselection and excluding the target cell as a candidate reselection target cell within a specified time period.

In the foregoing solution, the cell selection unit is further configured to: the UE synchronizes to the reselection target cell, and first reads system information including SIB1 and/or SIB2 that is necessary for camping, after the resident is satisfied, Directly using the previously read SIB13 to configure the MCCH, and obtain the MCCH control information to try to continue the reception of the eMBMS service, and then read other system information except the SIB1 and/or SIB2, The selection process is over.

In the foregoing solution, the method further includes: after rejecting the reselection, the UE does not find a suitable neighbor camp, and when the service variation of the reselected target cell no longer satisfies the camp, the UE uses the UE. The USD and the SIB 15 are re-determined to re-target the neighboring frequency points containing the current eMBMS service to achieve priority de-resident.

The measurement unit, the reselection decision unit, the receiving unit, and the cell selection unit may use a central processing unit (CPU) and a digital signal processor (DSP, Digital Singnal Processor) when performing processing. ) or programmable logic array (FPGA, Field-Programmable Gate Array) implementation.

The method for implementing the continuous reception of the eMBMS in the embodiment of the present invention includes: the UE performs measurement according to the USD and the system information to adjust the frequency reselection priority, and obtains the measurement result; and obtains the current enhanced multimedia broadcast multicast service according to the measurement result. When the neighboring cell on the eMBMS frequency meets the reselection condition, the neighboring cell on the eMBMS frequency point is determined as the target cell; before the reselection to the target cell is initiated, the reselection pre-judgment is performed according to the preset rule, and the judgment is obtained. a result of the judgment that the system information corresponding to the target cell includes the current eMBMS service relationship When the information is unified, it is determined that the target cell is a reselected target cell, and the reselection process to the reselected target cell is preferentially initiated.

According to the embodiment of the present invention, before the reselection to the target cell is initiated, the reselection pre-judgment is performed according to the preset rule, instead of directly initiating the reselection to the target cell, and the determination result is corresponding to the target cell. When the system information includes the relevant system information of the current eMBMS service, the target cell is determined to be the reselected target cell, and the reselection process to the reselected target cell is preferentially initiated, thereby avoiding the interruption of the service reception and ensuring the service. The continuity of reception.

DRAWINGS

1 is a schematic diagram of a typical eMBMS network architecture in the prior art;

2 is a schematic diagram of an implementation process of an embodiment of a method according to the present invention;

3 is a schematic structural diagram of a main processing unit in a device structure of the present invention;

4 is a schematic flowchart of a UE reselection according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a reselection process in a multicast priority case according to an embodiment of the present invention; FIG.

FIG. 6 is a camping process when the serving cell becomes unavailable in the multicast priority case of the present invention.

detailed description

The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings.

A method for implementing continuous reception of eMBMS according to an embodiment of the present invention, as shown in FIG. 2, includes:

Step 101: The UE performs measurement according to the USD and system information to adjust the frequency reselection priority, and obtains a measurement result.

Step 102: Determine, according to the measurement result, that the neighboring cell on the current eMBMS frequency point satisfies the reselection condition, and determine that the neighboring cell on the eMBMS frequency point is the target cell.

Step 103: Before initiating reselection to the target cell, performing reselection pre-judgment according to a preset rule, and obtaining a judgment result;

Step 104: If the system information corresponding to the target cell includes related system information of the current eMBMS service, determine that the target cell is a reselected target cell, and preferentially initiates to the reselected target cell. Re-election processing.

In an embodiment of the present invention, the preset rule is configured to: when the UE is in an idle state, use the idle time of the UE to receive a service to pre-read eMBMS service related system information of the target cell. To ensure that the UE reselects to the cell with the ongoing eMBMS service, maintaining the continuity of the UE reception.

In an embodiment of the present invention, the UE performs measurement after adjusting the frequency reselection priority according to the user service description USD and the system information, and obtains the measurement result, including:

In an embodiment of the present invention, the method further includes: before the reselection to the target cell, performing a reselection pre-judgment according to a preset rule, and before detecting the result, when detecting the unicast service When the priority is given, the reselection process to the target cell is immediately initiated; when the multicast service priority is detected, the current eMBMS service is continuously received, and the eMBMS service related system information of the target cell is read at the same time to follow the The preset rule performs a reselection pre-judgment; wherein the eMBMS service related system information of the target cell includes the SIB13 and/or the SIB15.

In an embodiment of the present invention, the re-selection pre-judgment according to the preset rule includes:

In an embodiment of the present invention, the preferentially initiating a reselection process to the reselected target cell includes:

In an embodiment of the present invention, the method further includes: rejecting the reselection, causing no suitable neighbor camp to be found, and the service variation of the reselected target cell no longer satisfies the camping time. The UE uses the USD and the SIB 15 to re-determine the target frequency point, and initiates a camp to the neighbor frequency point including the current eMBMS service to implement priority de-resident.

As shown in FIG. 3, the terminal includes at least a measurement unit 11 and a reselection decision unit 12, and may further include: a cell selection unit 13 and a receiving unit 14; The measurement unit is mainly responsible for completing the specified neighboring cell measurement; the reselection decision unit mainly completes the judgment of the proposed reselection condition for implementing the embodiment of the present invention, that is, the pre-judgment before the re-election is initiated, according to the judgment result It is decided whether to initiate the operation to the target cell or reject the reselection. The cell selection unit 13 is mainly responsible for completing the reading and residing of the cell system information; the receiving unit 14 is mainly responsible for receiving the MCCH control information and receiving the eMBMS service data.

Specifically, the measuring unit is configured to: after the user terminal UE adjusts the frequency reselection priority according to the user service description USD and the system information, perform measurement to obtain a measurement result; and the reselection decision unit is configured according to the When the neighboring area of the eMBMS frequency point of the current enhanced multimedia broadcast multicast service satisfies the reselection condition, the neighboring area on the eMBMS frequency point is determined as the target cell; before the reselection to the target cell is initiated, according to the measurement result Determining a pre-judgment of the pre-determined rule, and obtaining a judgment result; the judging result is that when the system information corresponding to the target cell includes related system information of the current eMBMS service, determining that the target cell is a reselected target cell, The reselection process to the reselection target cell is preferentially initiated.

In an embodiment of the present invention, the preset rule is configured to: when the UE is in an idle state, use the idle time of the UE to receive a service to pre-read the eMBMS service related system information of the target cell, In order to ensure that the UE reselects to the cell having the current eMBMS service, the continuity of the UE reception is maintained.

In an embodiment of the present invention, the measuring unit is further configured to: when the system information is the SIB15, configure the neighboring area measurement to be performed normally, and adjust the corresponding frequency point reselection priority according to the USD and the SIB15. After the highest, the measurement is performed and the measurement result is obtained;

The receiving unit is configured to camp on the eMBMS cell and start receiving the current eMBMS service, before the UE performs measurement after adjusting the frequency reselection priority according to the USD and the system information.

In an embodiment of the present invention, the cell selection unit is configured to perform a reselection pre-judgment according to a preset rule before the re-selection to the target cell, and before the judgment result is obtained, when the detection result is obtained When the broadcast service is prioritized, the reselection process to the target cell is immediately initiated; when the multicast service priority is detected, the receiving unit is instructed to continue to receive the current eMBMS service, and at the same time, read the eMBMS service of the target cell. The system information is related to the reselection pre-judgment according to the preset rule; wherein the eMBMS service related system information of the target cell includes the SIB13 and/or the SIB15.

In an embodiment of the present invention, the reselection decision unit is further configured to determine whether the SIB 13 and/or the SIB 15 includes related system information of a current eMBMS service, and if yes, perform the determining the target cell. In order to reselect the target cell, the reselection process to the reselection target cell is preferentially initiated; otherwise, the reselection is rejected, and the target cell is excluded as the candidate reselection target cell within the specified time period.

In an embodiment of the present invention, the cell selection unit is further configured to: the UE synchronizes to the reselection target cell, and first reads system information including SIB1 and/or SIB2 that is necessary for camping, After the resident is satisfied, the MCCH configured by the SIB13 read before is directly used, And obtaining the MCCH control information to try to continue the reception of the eMBMS service, and at the same time, reading additional system information except the SIB1 and/or SIB2, and the reselection process ends.

In an embodiment of the present invention, the method further includes: rejecting the reselection, causing no suitable neighbor camp to be found, and the service variation of the reselected target cell no longer satisfies the camping time. The UE uses the USD and the SIB 15 to re-determine the target frequency point, and initiates a camp to the neighboring cell frequency point including the current eMBMS service to implement priority de-resident.

The present invention relates to all user terminals supporting eMBMS, and the invention can ensure that the UE is most likely to reselect or camp on a cell that can continue to provide services, and ensure continuity of service reception.

The embodiment of the present invention is described as an example of a practical application scenario as follows:

A practical application scenario is as follows: The UE adjusts the frequency reselection priority according to the USD and the system information, and performs measurement. When the neighboring area on an eMBMS frequency meets the reselection condition, the reselection is directly initiated, which may cause the following problems:

a) if the target cell is unable to provide the existing eMBMS service, the service reception is interrupted;

b) If the target cell can continue to provide the existing service, but because the same cell is in a different MBSFN area, the UE needs to read the SIB and obtain the MCCH control information to continue receiving the service. As mentioned above, the system information scheduling is up to 5120ms, which still causes service interruption.

In order to solve the above problem, the present invention proposes a pre-judgment mechanism before reselection, that is, the eMBMS service continues to be received before the reselection to the target cell, and the eMBMS related system information SIB13 of the target cell is read. And SIB15. If the target cell contains related information of the existing eMBMS, the UE synchronizes to the target cell, and directly uses the previously read SIB13 to continue the eMBMS service after reading the resident necessary system. Otherwise, the reselection is refused, and the reselection attempt to the cell is prohibited for a period of time (such as 300 seconds), and other neighboring areas are tried. Due to the above reselection restriction condition, the serving cell may no longer be suitable for camping. In this case, the UE describes the USD information and the SIB15 information according to the user service, and preferentially transmits the frequency to the current eMBMS service. The point initiates the resident process. Through this method, the situation in which the eMBMS service is interrupted in the case of reselection can be effectively solved, and the continuity of service reception is ensured.

This application scenario adopts the embodiment of the present invention, and can ensure continuous reception of the eMBMS service in the case of reselection. To achieve this goal, the solution mainly includes: the UE performs normal measurement in the idle state according to the system information configuration, and at the same time, the UE The user service description USD and system information SIB15 are used to set the reselection priority of the overlapping frequency points to be the highest. When a reselected target cell is obtained according to the existing 3GPP existing reselection condition, the UE uses the idle time received by the eMBMS to read the target cell eMBMS related system information SIB13\SIB15, and if the information includes the current eMBMS service information, then Initiate reselection to the target cell. When reselecting, as soon as the MIB\SIB1\SIB2 necessary for the target cell to camp on is read, the MCCH is configured using the previously read eMBMS information, the MCCH control information is received, and the service reception is continued; when the above restriction condition is caused, no heavy load is initiated. When the serving cell becomes unavailable, the UE immediately uses the user service description USD information and the SIB15 information to initiate a camp to the frequency point including the current eMBMS service to ensure continuity of service reception.

The UE uses the UE to receive the service idle time to pre-read the eMBMS related system information of the target cell, and implements the pre-judgment before the reselection, so as to ensure that the UE reselects to the cell having the eMBMS service, thereby maintaining the continuity of the UE reception and improving the user. The experience, the corresponding process includes the following:

Step 201: The UE camps on the eMBMS cell and starts receiving the eMBMS service.

Step 202: The UE performs the required neighbor cell measurement according to the system information configuration, and adjusts the corresponding frequency point reselection priority to the highest according to the user service description USD information and the SIB15 information.

Step 203: When the UE checks that the neighboring cell meets the reselection condition, if the unicast service is prioritized, the reselection to the target cell is initiated immediately, and the reselection process ends. If the eMBMS multicast priority occurs, step 204 is performed;

Step 204: At this time, the reselection is not immediately initiated, but the target cell eMBMS related system information is read by using the idle frame time. If the target cell system information includes the current eMBMS service, Then start the re-election to the target cell. Otherwise, the UE rejects the reselection and excludes the target cell as a reselection candidate cell for a period of time.

When the reselection condition is met in step 205 and step 204, the UE synchronizes to the target cell, and first reads the system information SIB1\SIB2 necessary for camping and satisfies the resident, immediately configures the MCCH using the previously read information, and obtains The control information of the MCCH continues to receive the eMBMS service. At the same time, to read other additional system information, the re-election process ends.

Step 206: The UE uses the USD and the UE because the reselection restriction condition (or the reselection pre-judgment condition) in the above step 204 causes that the appropriate neighbor camp is not found, and the serving cell variation no longer satisfies the camp condition. The source cell SIB 15 determines the target frequency point and preferentially camps to ensure continuity of service reception.

Application scenario 1:

The process of ensuring the eMBMS continuous receiving method in the case of reselection, as shown in FIG. 4, includes:

Step 301: The UE starts to camp on the eMBMS cell CELL1.

Step 302: Enable neighboring cell measurement according to system information of the serving cell.

Step 303: The application layer AP configures the user service description USD information and initiates an eMBMS service request. The UE reads the MCCH control message according to the SIB13 configuration of the serving cell. After receiving the MCCH control information, the MCCH is configured according to the current service, and the data receiving service is started. At the same time, according to the USD and the system information SIB15, the frequency reselection priority with the same frequency point and SAI is set to be the highest. If the UE sets the MBMS multicast priority, the other frequency measurement that is not related to the eMBMS is disabled (refer to the description of the process in FIG. 5 corresponding to the application scenario 2). If the unicast is prioritized, the corresponding neighboring cell measurement is turned on according to the measurement criteria of the prior art scheme, and the downward execution is continued.

Step 304: When a neighboring cell CELL2 is measured, and Srxlev (S value)>Threshhold is satisfied in the Treselection time, that is, the cell satisfies the condition of reselection, and the UE initiates reselection to CELL2 to determine whether the reselection succeeds. Then, step 305 is performed; otherwise, step 306 is performed.

Step 305: If the reselection is successful, try to resume the reception of the eMBMS, and if the recovery fails, notify the upper layer service to suspend. If successful, continue to receive the service.

Step 306: If the reselection fails, the UE falls back to CELL1 and continues to receive the eMBMS service.

Application scenario 2:

Figure 5 shows the reselection process in the case of multicast priority, including:

Step 401: The UE starts to camp on the eMBMS cell CELL1.

Step 402: Enable neighboring cell measurement according to system information of the serving cell.

Step 403: The application layer AP configures the user service description USD information and initiates an eMBMS service request. The UE reads the MCCH control message according to the SIB13 configuration of the serving cell. After receiving the MCCH control information, the MCCH is configured according to the current service, and the data receiving service is started. At the same time, according to the USD and the system information SIB15, the frequency reselection priority with the same frequency point and SAI is set to be the highest. At the same time, other frequency measurement unrelated to eMBMS is turned off to determine whether the condition of reselection is satisfied. When a neighboring cell CELL2 is measured and Srxlev(S value)>Threshhold is satisfied within the Treselection time, the cell satisfies the condition of reselection.

Step 404: If the condition of the reselection is met, then the UE closes all neighboring cell measurements, and on the cell CELL1, the eMBMS related system information SIB13\SIB15 of the target cell CELL2 is read by using the idle time received by the service. First, the UE synchronizes to CELL2 and reads system information SIB1 on subframe 5. According to the SI scheduling cell in the SIB1, the scheduling information of the SI block where the SIB13 and the SIB15 are located is obtained, and then the reception of the two information is completed.

Step 405: After reading all relevant system information, start to determine whether CELL2 satisfies the eMBMS condition, and the judgment rule is as follows:

1) The SIB13 contains the MBSFN AreaId where the eMBMS service is currently being carried out on CELL1, or.

2) The SIB 15 contains the SAI information contained in the USD information.

When one of the above two conditions is met, a reselection to CELL2 can be initiated.

If the condition of the reselection is met, the UE initiates a reselection to CELL2. If the condition for continuing to receive the service is not satisfied, the UE relinquishes the reselection to CELL2 and excludes CELL2 as a candidate for reselection. The cell is in a period of time (300 seconds).

Here, if reselection cannot be initiated, CELL2 is excluded as a candidate cell for reselection for a period of time. When the application layer AP deactivates the currently received service or reactivates other eMBMS services, the UE releases the restriction on CELL2 reselection.

Step 406: If reselection is initiated but the reselection fails, the UE directly uses the saved CELL1 control information to continue receiving the eMBMS service and recover the corresponding measurement.

Step 407: If the reselection succeeds, camping on the target cell, and continuing to receive the eMBMS service.

Application scenario three:

Figure 6 shows the resident process when the serving cell becomes unavailable in the multicast priority case, including:

Step 501: When the above reselection restriction condition causes the UE to fail to reselect a cell with better signal, and the current serving cell CELL1 becomes unavailable, the UE acquires the frequency that the USD and the system information SIB15 have the same frequency point and SAI. Resident. If the residency is successful, try the recovery of the eMBMS service.

Step 502: When the foregoing step cannot be camped on a suitable cell, perform discrete frequency frequency sweeping and camping according to the USD information, and try to recover the service. When the resident is successful, try to restore the eMBMS service, and still cannot When camping on a suitable cell, the frequency point information is swept and relocated according to the frequency information in the SIB15, and the service recovery is attempted. When the resident is successful, the eMBMS service is attempted to be restored.

Step 503: Perform full-band scanning camping supported by the UE when the above steps are still unable to camp on the cell. Try to recover the eMBMS service when the residency is successful.

In step 504, when the eMBMS service is still not restored, the upper-layer AP is notified, the service is suspended, and the receiving of the specified eMBMS service cannot be performed.

The integrated modules described in the embodiments of the present invention may also be stored in a computer readable storage medium if they are implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the embodiments of the present invention is made substantially or prior to the prior art. The contributed portion may be embodied in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the various aspects of the present invention. All or part of the methods described in the examples. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. . Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, the embodiment of the present invention further provides a computer storage medium, wherein a computer program is stored, and the computer program is used to execute the method for implementing continuous reception of eMBMS according to an embodiment of the present invention.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

Claims

A method for implementing continuous reception of an enhanced multimedia broadcast multicast service, the method comprising:

The user terminal UE performs measurement according to the user service description USD and system information to adjust the frequency reselection priority, and obtains the measurement result;

And determining, according to the measurement result, that the neighboring cell on the eMBMS frequency point of the current enhanced multimedia broadcast multicast service meets the reselection condition, determining that the neighboring cell on the eMBMS frequency point is the target cell;

Before initiating a reselection to the target cell, performing a reselection pre-judgment according to a preset rule, and obtaining a judgment result;

If the judgment result is that the system information corresponding to the target cell includes related system information of the current eMBMS service, determining that the target cell is a reselection target cell, and preferentially initiating reselection processing to the reselection target cell .
The method according to claim 1, wherein the preset rule is configured to: pre-read an eMBMS service related system of the target cell by using an idle time of the UE to receive a service when the UE is in an idle state; Information to ensure that the UE reselects to the cell with the ongoing eMBMS service, maintaining the continuity of UE reception.
The method according to claim 2, wherein the UE performs measurement after adjusting the frequency reselection priority according to the user service description USD and the system information, and obtains the measurement result, including:

When the system information is the SIB15, the neighboring area measurement required for normal configuration is performed, and the measurement is performed after the corresponding frequency reselection priority is adjusted to be the highest according to the USD and the SIB15, and the measurement result is obtained;

Correspondingly, the method further includes: before the UE adjusts the frequency reselection priority according to the USD and the system information, the UE camps on the eMBMS cell and starts to receive the current eMBMS service.
The method according to claim 3, wherein the method further comprises: before the reselection to the target cell, performing a reselection pre-judgment according to a preset rule, before obtaining the judgment result,

When the unicast service priority is detected, the reselection process to the target cell is immediately initiated;

When the multicast service priority is detected, the current eMBMS service is continuously received, and the eMBMS service related system information of the target cell is read to perform reselection pre-judgment according to the preset rule; wherein the target The eMBMS service related system information of the cell includes SIB13 and/or SIB15.
The method according to claim 4, wherein the performing the reselection pre-judgment according to the preset rule comprises:

Determining whether the SIB 13 and/or the SIB 15 include related system information of the current eMBMS service, and if yes, performing the determining that the target cell is a reselection target cell, and preferentially initiating reselection processing to the reselection target cell Otherwise, the reselection is rejected, and the target cell is excluded as the candidate reselection target cell within the specified time period.
The method according to claim 5, wherein the preferentially initiating a reselection process to the reselection target cell comprises:

The UE synchronizes to the reselected target cell, and first reads the system information including the SIB1 and/or the SIB2 that is necessary for the relocation, and after the residing, directly uses the previously read SIB13 to configure the MCCH. And obtaining the MCCH control information to try to continue the reception of the eMBMS service, and at the same time, reading additional system information except the SIB1 and/or SIB2, and the reselection process ends.
The method according to claim 6, wherein the method further comprises: rejecting the current reselection results in no suitable neighbor camping being found, and the service variation of the reselecting target cell no longer satisfies the resident The UE uses the USD and the SIB 15 to re-determine the target frequency point, and initiates a camp to the neighbor frequency point including the current eMBMS service to implement priority de-resident.
A terminal for implementing continuous reception of an enhanced multimedia broadcast multicast service, the terminal comprising:

a measuring unit configured to: after the user terminal UE adjusts the frequency reselection priority according to the user service description USD and the system information, perform measurement, and obtain a measurement result;

Reselecting the determining unit, configured to determine, according to the measurement result, that the neighboring cell on the eMBMS frequency point of the current enhanced multimedia broadcast multicast service meets the reselection condition, determining that the neighboring cell on the eMBMS frequency point is the target cell; Before the reselection of the target cell, the reselection pre-judgment is performed according to the preset rule, and the judgment result is obtained; when the judgment result is that the system information corresponding to the target cell includes the relevant system information of the current eMBMS service, The target cell is a reselection target cell, and preferentially initiates a reselection process to the reselected target cell.
The terminal according to claim 8, wherein the preset rule is configured to: when the UE is in an idle state, use an idle time of the UE to receive a service to pre-read an eMBMS service related system of the target cell. Information to ensure that the UE reselects to the cell with the ongoing eMBMS service, maintaining the continuity of UE reception.
The terminal according to claim 9, wherein the measuring unit is further configured to: when the system information is SIB15, configure the neighboring area measurement required to perform normal, and adjust the corresponding frequency point reselection priority according to the USD and the SIB15. After the level is the highest, the measurement is performed and the measurement result is obtained;

The terminal further includes: a receiving unit configured to camp on the eMBMS cell and start receiving the current eMBMS service, before the UE performs measurement after adjusting the frequency reselection priority according to the USD and the system information.
The terminal of claim 10, wherein the terminal further comprises:

The cell selection unit is configured to perform a reselection pre-judgment according to a preset rule before the re-selection to the target cell, and before the determination result is obtained, when the unicast service priority is detected, the target is immediately launched. a re-selection process of the cell; when the multicast service priority is detected, the receiving unit is instructed to continue to receive the current eMBMS service, and at the same time, read the eMBMS service related system information of the target cell, according to the preset rule. Performing a reselection pre-judgment; wherein the eMBMS service related system information of the target cell includes the SIB13 and/or the SIB15.
The terminal according to claim 11, wherein the reselection decision unit is further configured to determine whether the SIB 13 and/or the SIB 15 contain related system information of a current eMBMS service, and if yes, perform the determining The target cell is the reselected target cell, and the priority is initiated to Reselecting the reselection target cell; otherwise, rejecting the reselection, and excluding the target cell as a candidate reselection target cell within a specified time period.
The terminal according to claim 12, wherein the cell selection unit is further configured to synchronize the UE to the reselection target cell, and first read a system including SIB1 and/or SIB2 necessary for camping. After the information is satisfied, the SIB 13 configured to read the MCCH is directly used, and the MCCH control information is obtained to try to continue the reception of the eMBMS service, and then read the SIB1 and/or SIB2. With additional system information, the re-election process ends.
The terminal according to claim 13, wherein the method further comprises: rejecting the reselection, causing no suitable neighbor camp to be found, and the service variation of the reselected target cell no longer satisfies the resident The UE uses the USD and the SIB 15 to re-determine the target frequency point, and initiates a camp to the neighbor frequency point including the current eMBMS service to implement priority de-resident.