WO2012155476A1

WO2012155476A1 - User equipment, system and method for setting mbms frequency priority

Info

Publication number: WO2012155476A1
Application number: PCT/CN2011/082528
Authority: WO
Inventors: 许辉; 马子江; 毛磊
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-08-19
Filing date: 2011-11-21
Publication date: 2012-11-22
Also published as: CN102958000A

Abstract

The main purpose of the present invention is to provide a user equipment, a system and a method for setting MBMS (Multimedia Broadcast Multicast Service) frequency priority. The method comprises that: when the UE (user equipment) in idle state is interested in receiving MBMS service, it sets the MBMS frequency priority to the highest priority to perform cell selection or reselection. After the user equipment receiving MBMS service in the destination cell terminates, the MBMS frequency priority is no longer to be the highest priority. The problem of network congestion and overload, which is caused by the UE in the idle state for implementing MBMS service continuity, can be resolved by the technical scheme of the present invention.

Description

User equipment, system and method for MBMS frequency priority setting

Technical field

The present invention relates to Long Term Evolution (LTE) technology, and more particularly to a user equipment, system and method for setting a frequency priority of a Multimedia Broadcast Multicast Service (MBMS).

Background technique

With the rapid development of the Internet and the popularity of large-screen multi-function mobile user devices, a large number of mobile data multimedia services and various high-bandwidth multimedia services such as video conferencing, television broadcasting, video on demand, advertising, online education, interactive games, etc. have emerged. This aspect meets the needs of mobile users for multiple services, and on the other hand brings new business growth points for mobile operators. These mobile data multimedia services require multiple users to receive the same data at the same time. Compared with general data services, they have the characteristics of large data volume, long duration, and delay sensitivity.

In order to effectively utilize mobile network resources, the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) proposed Multimedia Broadcast Multicast Service (MBMS). MBMS service is a technology for transmitting data from one data source to multiple target mobile user devices, which realizes the sharing of resources (including core network and access network) and improves the utilization of network resources (especially air interface resources). rate. The MBMS service defined by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia service broadcast and multicast, and provide a variety of rich video, audio and multimedia services, which undoubtedly conforms to the future. The trend of mobile data development provides a better business prospect for the development of 3G.

The user equipment (UE) that receives the MBMS service may be in one of two states: one is an RRC connected state (RRC-CONNECTED, referred to as a connected state); the other is an RRC idle state (RRC-IDLE, referred to as idle) In the present invention, only the UE in the idle state is studied. According to whether the UE is receiving the unicast service, it can be determined whether the UE that is receiving the MBMS service is in the connected state or in the idle state; when the UE is receiving the unicast service, the UE is in the connected state; the UE in the idle state is not established with the network side. The radio resource control (RRC, Radio Resources Control) is connected, and the UE in the connected state establishes an RRC connection with the network side. In the process of mobile, for the idle state UE, the cell selection or reselection procedure is generally used to enter the target cell; for the connected UE, the cell handover procedure is generally used to enter the target cell.

If the UE has the MBMS service being received in the source cell, after the UE enters the target cell, the UE reads the message of the Broadcast Control Channel (BCCH, Broadcast Control CHannel) and the Multicast Control Channel (MCCH, Multicast Control Channel) to Obtain resource configuration information of the MBMS service in the target cell. If the target cell and the source cell belong to the same MBMS over a Single Frequency Network (MB SFN) area, that is, the target cell and the source cell belong to the MBSFN area, the UE does not have to read after entering the target cell. The resource configuration information of the MBMS service can directly receive the MBMS service in the target cell by using the resource configuration information of the MBMS service of the source cell (current cell), and realize the continuity of the MBMS service; if the target cell and the source cell belong to different MBSFN areas, The UE needs to read the resource configuration information of the MBMS service after entering the target cell. If the MBMS service that the UE needs to receive in the target cell is not sent, the UE cannot read the resource configuration information of the MBMS service after entering the target cell. Unable to receive MBMS service.

The receiving status of the UE having the MBMS service capability includes: receiving the MBMS service, and interested in receiving the MBMS service. Interested in receiving the MBMS service means that the UE has not received the MBMS service and is ready to receive the MBMS service. At this time, the UE can listen to the MBMS notification message and further read the MCCH message and the MBMS service data according to the MBMS notification message.

In an LTE system, a cell has only one uplink carrier and downlink carrier. In the LTE-A (Long Term Evolution-Advanced Long Term Evolution-Advance) phase, in order to improve the uplink and downlink transmission rates, an LTE-A cell may be configured with multiple component carriers (CC, Component Carrier) and multiple CCs. They can be aggregated to form a transmission bandwidth of up to 100 MHz, and the UE can perform data transmission and reception on one or more CCs (depending on the capabilities of the UE itself), which is called CA (Carrier Aggregation). Assuming that one LTE-A cell has multiple uplink and downlink component carriers, for a UE in idle mode in the cell, in order to simplify the behavior of the idle mode UE and reduce the power consumption of the UE, the idle mode UE always resides in a certain one. On the component carrier. However, after the UE enters the connection mode, in order to enable the UE to send and receive data at a higher rate, a component carrier activation process is required to manage the carrier, so that the UE can perform data scheduling on multiple component carriers at the same time. The current 3GPP discussion agrees that only MBMS service continuity deployed on one frequency is considered. The component carrier that provides the MBMS service is referred to herein as the MBMS frequency.

In the MBSFN area, if the number of UEs that are receiving or interested in receiving MBMS services is small, the MBMS service may be transmitted in a point-to-point (PTP) manner. At this time, the radio access network (RAN) side does not know that the MBMS service passes. Unicast transmission.

The cell selection or reselection belongs to mobility in the UE idle state. Cell selection includes: initial cell selection, returning to idle state from the connected state, and re-entering the service. The cell selection includes the UE searching for the strongest cell on each carrier frequency in each supported RAT (Radio Access Technology) until a suitable cell is found. When leaving the connection mode, the UE usually selects the cell connected in the past, but the connection release message may include information indicating that the UE searches for the cell on the specific frequency; when the UE finds that there is no suitable cell in the selected PLMN, performing "arbitrary cell search", this In this state, the UE is not allowed to receive the MBMS service.

The purpose of cell selection or reselection is to ensure that the idle state UE resides in the best cell. In a wireless network, cell selection or reselection is a necessary process, mainly due to the mobility of the UE and the volatility of the wireless environment, thereby causing fluctuations in signal strength and interference levels. In LTE, the network side can set up to 8 different priorities for different frequencies. The idle state UE performs cell selection or reselection according to the frequency priority order. When the frequency priorities are the same, the UE performs cell according to the order of the radio channel quality. Select or reselect.

As a basic principle, each user equipment uses its own radio measurements (such as received beacon channel levels) and network-provided parameters (such as thresholds) and partial system information to select or reselect cells. The guidelines are evaluated. For multimode user equipment in environments that offer multiple access technologies, user equipment needs to evaluate reselection criteria using measurements from different available frequencies and access technologies.

The network controls the parameters used by the reselection criteria, allowing the UEs in idle state to be moved to the most relevant network layer as needed by the network.

The 3GPP discussion agrees that for the idle state UE receiving the MBMS service, when the cell is selected or reselected, the MBMS frequency is taken as the highest priority, and then the cell selection or reselection is performed according to the cell selection or reselection rule of the unicast service.

During the research and practice of related technologies, the following problems have been discovered: The idle state UE of the MBMS service receives the MBMS frequency as the highest priority and enters the target cell through cell selection or reselection. When the number of idle state UEs receiving the MBMS service is large, the centralized aggregation in the same cell may generate a larger The network load, especially the UE, takes the MBMS frequency as the highest priority, which may result in the UE being unable to reselect to other cells, resulting in increased network load. If the idle state UE initiates an RRC connection request, network congestion may result. Summary of the invention

In view of the above, the main purpose of the present invention is to provide a user equipment, a system, and a method for configuring an MBMS frequency priority setting, which are used to solve the problem of network congestion and excessive load caused by an idle UE in order to implement MBMS service continuity. .

The present invention provides a method for configuring MBMS frequency priority of a multimedia broadcast multicast service, including:

When the user equipment in the idle state is interested in receiving the MBMS service, the MBMS frequency is set to the highest priority for cell selection or reselection; after the user equipment receives the MBMS service termination in the target cell, the MBMS frequency is no longer used as the MBMS frequency. The highest priority.

The above method can also have the following characteristics:

The user equipment sets the MBMS frequency to the highest priority before the MBMS service that is interested in receiving begins;

The method further includes: after the user equipment enters the target cell, determining whether the MBMS service of interest starts, if it starts, receiving the MBMS service in the target cell, until the MBMS service is terminated, and if not, continuing to monitor the MCCH notification information.

The above method can also have the following characteristics:

Setting the MBMS frequency to the highest priority before the MBMS service that is interested in receiving begins is:

The user equipment knows the start time of the MBMS service that is of interest to receive, and sets the MBMS frequency to the highest priority before the start time.

The above method can also have the following characteristics:

Let the start time of the MBMS service be T1, and set the priority of the MBMS frequency priority. The minimum time interval of the start time of the MBMS service is T, and T2=T1 - Τ; then the user equipment sets the MBMS frequency priority to be within a preset range that is less than T2;

The minimum time interval means that the time required for the user equipment to set the MBMS frequency priority to enter the target cell is T, and the MBMS service just starts when entering the target cell.

The above method can also have the following characteristics:

The user equipment learns the start time information by using the received service statement, the monitored MBMS notification message, or the received system message.

The above method can also have the following characteristics:

The user equipment sets the MBMS frequency to the highest priority when starting to be interested in the MBMS service;

The method further includes: after the user equipment enters the target cell, determining whether the MBMS service of interest starts, if it starts, receiving the MBMS service in the target cell, until the MBMS service is terminated, and if not, continuing to monitor the MCCH notification information. Or return to the source cell.

The above method can also have the following characteristics:

The MBMS service termination includes one or more of the following situations:

The MBMS service ends; the higher priority MBMS service preempts the MBMS service resource; the MBMS service is suspended according to the counting result; the user equipment receives the unicast paging message; and the user equipment receives the emergency call.

The above method can also have the following characteristics:

The fact that the MBMS frequency is no longer the highest priority means:

The user equipment performs cell reselection according to the frequency priority set by the network side, and does not select from the MBMS frequency. If the selected suitable cell includes the source cell, the user equipment reselects to the source cell, and the selected suitable cell does not include The source cell, the user equipment randomly selects a camp in the selected suitable cell. The present invention also provides a user equipment for configuring an MBMS frequency priority, including a selection module and a receiving module, when the user equipment is in an idle state:

The selection module is configured to: when the user equipment is interested in receiving an MBMS service, The MBMS frequency is set to the highest priority for cell selection or reselection; and when the target cell receives the MBMS service termination, the MBMS frequency is no longer the highest priority.

The receiving module is configured to: receive the MBMS service in a target cell.

The above user equipment can also have the following characteristics:

The selection module is configured to set the MBMS frequency to the highest priority before the MBMS service of interest is started;

The user equipment further includes a judging module, configured to: determine, after the user equipment enters the target cell, whether the MBMS service that is interested in receiving starts, if not, notify the receiving module to receive the MBMS service, until the MBMS service is terminated. If it does not start, continue to listen to the MCCH notification message.

The above user equipment can also have the following characteristics:

The selection module is set to:

The receiving module knows the start time of the MBMS service that is of interest to receive, and sets the MBMS frequency to the highest priority before the start time.

The above user equipment can also have the following characteristics:

Let the start time of the MBMS service be T1, the minimum time interval between the time when the MBMS frequency priority is set and the start time of the MBMS service is T, and T2 = T1 - Τ; then the selection module is set to a preset range that is less than Τ2 at the time. Set the MBMS frequency priority within;

The minimum time interval means that the selection module sets the MBMS frequency priority to the time required for the user equipment to enter the target cell, and the MBMS service just starts when entering the target cell.

The above user equipment can also have the following characteristics:

The receiving module is further configured to learn the start time information by any one of the following: a received service announcement, a monitored MBMS notification message, a MCCH change notification, or a received system message.

The above user equipment can also have the following characteristics:

The selection module is configured to set the MBMS frequency to the highest priority when the user equipment starts to be interested in the MBMS service; The user equipment further includes a judging module, configured to: determine, after the user equipment enters the target cell, whether the MBMS service of interest starts, if not, notify the receiving module to receive the MBMS service, until the MBMS service is terminated, if not started, Continue to listen to the MCCH notification information or notify the selection module to return to the source cell.

The above user equipment can also have the following characteristics:

The MBMS service termination includes one or more of the following situations:

The above user equipment can also have the following characteristics:

The selection module is configured to not use the MBMS frequency as the highest priority in the following manner: performing cell reselection according to the frequency priority set by the network side, and not selecting from the MBMS frequency, for example, selecting a suitable cell including the source cell Then, the user equipment is reselected to the source cell, otherwise a camp is randomly selected in the selected suitable cell.

The present invention also provides a system for configuring an MBMS frequency priority;

The system includes the user equipment and the network side device as described above;

The network side device includes a sending module configured to send the configured frequency priority information and cell selection or reselection configuration information to the user equipment.

Using the above implementation scheme of the MBMS frequency priority setting, the idle state user equipment (UE) that is interested in receiving the MBMS service sets the MBMS frequency to the highest priority when performing cell selection or reselection; after receiving the MBMS service termination, The UE no longer sets the MBMS frequency to the highest priority. Effectively avoids network congestion and excessive load. BRIEF abstract

1 is a schematic structural diagram of an embodiment of a user equipment according to the present invention;

2 is a schematic structural view of an embodiment of a system of the present invention;

3 is a flow chart of an embodiment of a method of the present invention; 4 is a corresponding flowchart of an application example of the present invention;

FIG. 5 is a flowchart of a second application example of the present invention;

FIG. 6 is a schematic diagram of setting MBMS frequency priority in Application Example 1 of the present invention. Preferred embodiment of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

The present invention provides a user equipment, system, and method for configuring an MBMS frequency priority setting. When a user equipment in an idle state is interested in receiving an MBMS service, the MBMS frequency is set to the highest priority for cell selection or reselection; After the user equipment receives the MBMS service termination in the target cell, the MBMS frequency is no longer set to the highest priority.

The MBMS frequency can also be referred to as an MBMS carrier, or an MBMS carrier, or an MBMS frequency, or an MBMS frequency layer, and the like.

The frequency priority described herein refers to the frequency priority used for cell selection or cell reselection purposes.

Embodiment 1

This embodiment provides a user equipment for configuring an MBMS frequency priority, as shown in FIG. 1 , including a selection module and a receiving module.

The selecting module is configured to set the MBMS frequency to the highest priority for cell selection or reselection when the user equipment is interested in receiving the MBMS service; and is further configured to not set the MBMS frequency to be after the receiving of the MBMS service in the target cell is terminated. The highest priority.

The receiving module is configured to receive the MBMS service in a target cell.

Preferably, the selection module sets the MBMS frequency to the highest priority before the start of the MBMS service that is of interest to receive;

The user equipment further includes a determining module, configured to determine, after the user equipment enters the target cell, whether the MBMS service that is interested in receiving starts, and if not, notify the receiving module to receive the MBMS service, until the MBMS service is terminated, if Continue to listen to the MCCH notification letter if it has not started Interest.

Preferably, the MBMS service that is interested in receiving begins before the receiving module knows that the MBMS service that is interested in receiving is before the start time.

Preferably, the receiving module knows the start time information by any one of the following methods: a received service statement, a monitored MBMS notification message, or a received system message.

Preferably, the selection module sets the MBMS frequency to the highest priority when the user equipment starts to be interested in the MBMS service;

The user equipment further includes a judging module, configured to determine whether the MBMS service of interest starts after the user equipment enters the target cell, and if yes, notify the receiving module to receive the MBMS service until the MBMS service is terminated, and if not, continue to listen to the MCCH notification. The information or notification selection module returns to the source cell.

Preferably, the MBMS service termination includes the following situations:

The MBMS service is sent to the end; the higher priority MBMS service preempts the MBMS service resource; the MBMS service is suspended according to the counting result; the user equipment receives the unicast paging message; and the user equipment receives the emergency call.

Preferably, the MBMS frequency is no longer the highest priority. The selection module performs cell reselection according to the frequency priority set by the network side, and does not select from the MBMS frequency. If the selected suitable cell includes the source cell, The selection module reselects the user equipment to the source cell, otherwise the selection module randomly selects a camp in the selected suitable cell.

Embodiment 2

The embodiment provides a system for configuring an MBMS frequency priority, as shown in FIG. 2, including the user equipment and the network side device according to the first embodiment;

The network side device includes a sending module, configured to send the configured frequency priority information and the cell selection or reselection configuration information to the user equipment.

The frequency priority information set on the network side refers to the frequency priority information indicated by the network side through system messages or other RRC signaling messages, including the priorities of the same frequency and the different frequency, and also includes the MBMS. The priority of the frequency.

The network side sends cell selection or reselection configuration information through system messages and/or other RRC signaling messages.

The cell selection or reselection configuration information includes but is not limited to: measurement rules, frequency priorities, access restrictions, time parameters, and the like.

Embodiment 3

This embodiment provides a method for configuring an MBMS frequency priority. As shown in FIG. 3, the method includes the following steps:

Step 301: The network side sends a cell selection or reselection related configuration information.

The network side sends cell selection or reselection configuration information by using system messages and/or other RRC signaling messages;

The cell selection or reselection configuration information includes but is not limited to: a measurement rule, a frequency priority, an access restriction, a time parameter, and the like;

The above cell selection or reselection configuration information may be provided by one or more signaling messages.

Step 302: The idle state UE that is interested in receiving the MBMS service sets the MBMS frequency to the highest priority, and performs cell selection or reselection according to the cell selection or reselection criteria;

The cell selection or reselection criterion refers to a cell selection or reselection criterion of a unicast service, such as a measurement rule, an S-criterion, an R-criterion, an access restriction, and the like;

Considering that the idle state UE's cell selection or reselection between different frequencies is based on the frequency priority, the same priority is based on the radio link quality, so the UE receiving or interested in receiving the MBMS can reselect to the MBMS frequency cell through the above procedure.

Step 303: The idle state UE receives the MBMS service in the target cell until the MBMS service is terminated, and then the UE no longer takes the MBMS frequency as the highest priority.

The UE does not use the MBMS frequency as the highest priority. The UE performs cell reselection according to the frequency priority set by the network side, and does not select from the MBMS frequency. If the selected suitable cell includes the source cell, the UE reselects. Source cell, otherwise the UE randomly selects one of the selected suitable cells. Application example one

For the idle state UE that is interested in receiving the MBMS service, the scenario of setting the MBMS frequency priority and performing cell selection or reselection before the start of the MBMS service that is interested in receiving the MBMS service, as shown in FIG. 4, includes:

Step 401: The network side sends a cell selection or reselection related configuration information.

The network side sends cell selection or reselection configuration information by using a system message or other RRC signaling message;

Step 402: The UE sets the MBMS frequency priority to the highest, and performs cell selection or reselection according to the cell selection or reselection criteria.

In this embodiment, the time when the UE sets the MBMS frequency priority to the highest is: before the MBMS service of interest is started; that is, the UE knows the start time of the MBMS service of interest, and before the start time, the UE will MBMS. The frequency priority is set to the highest and the cell is reselected. Preferably, the start time of the MBMS service is T1, and the minimum time interval between the time when the MBMS frequency priority is set and the start time of the MBMS service is T, and T2=T1 - UE; The UE sets the MBMS frequency priority to be within a preset range that is less than T2. As shown in FIG. 6, the time interval between T3 and T2 is a preset range; the preset range can be set according to actual needs.

The minimum time interval mentioned above refers to that the time required for the UE to set the MBMS frequency priority to enter the target cell is T, and the MBMS service just starts when entering the target cell.

The MBMS service start time can be obtained by the following methods:

The MCCH change notification (MBMS notification message) monitored by the UE, or the UE receives the service statement sent by the BM-SC, or is learned by the received system message.

The cell selection or reselection criterion refers to a cell selection or reselection criterion of a unicast service, such as a measurement rule. S-criterion, R-criterion, access restrictions, etc.;

In this step, the UE sets the frequency of providing the MBMS service in the source cell to the highest priority, regardless of the frequency priority set by the network side; then, the UE selects the target cell from the cells of the same MBMS frequency in the neighboring cells of the source cell. .

If there are multiple neighbor cells of the MBMS frequency, the UE selects the neighbor cell with the best radio channel quality.

If the cell in which the UE is located is a Closed Subscriber Group (CSG) cell, the UE uses the MBMS frequency as the highest priority frequency;

Step 403, the UE enters the target cell through the cell selection or reselection process, determines whether the MBMS service of interest starts, and if yes, proceeds to step 404, otherwise proceeds to step 406;

The method for the UE to determine whether the MBMS service is started is: the UE reads the SIB13 first, and then reads the MCCH message. If the MBMS service identifier exists in the MCCH message, the MBMS service of interest has started, if the service does not exist. The identification indicates that the MBMS service of interest has not started.

Step 404: The UE receives the MBMS service in the target cell until the MBMS service is terminated; then, step 405 is performed;

If the MBMS service of interest has started in the target cell, the UE receives the MBMS service of interest in the target cell;

The MBMS service termination may be the end of the MBMS service transmission, or the MBMS service termination caused by other reasons. For example, the higher priority MBMS service preempts the MBMS service resource through the ARP Pre-emption, or suspends the MBMS service according to the counting result. Either receive a unicast paging message (such as MT-Mobile Terminating, mobile called), or the UE receives an emergency call, and so on.

For some cases (such as the UE receiving a call), the MBMS service is interrupted, and the UE may continue to receive the MBMS service or terminate the reception of the MBMS service after the interruption ends.

Step 405: The UE no longer receives the MBMS service, and no longer sets the MBMS frequency to the highest priority, and the process ends.

The UE no longer uses the MBMS frequency as the highest priority: the UE sets the frequency according to the network side. The priority is used for cell reselection, and is not selected from the MBMS frequency. If the selected suitable cell includes the source cell, the UE reselects to the source cell, otherwise the UE randomly selects one of the selected suitable cells.

The UE no longer receives the MBMS service, which means that the UE terminates receiving the MBMS service, and is not ready to continue to receive other MBMS services.

The frequency priority information set by the network side refers to the frequency priority information indicated by the network side through system messages or other RRC signaling messages, including the priorities of the same frequency and the different frequency, and also the priority of the MBMS frequency.

The cell selection or reselection criteria refer to cell selection or reselection criteria for unicast services, such as measurement rules, S-criterion, R-criterion, access restrictions, and the like.

Step 406: The UE monitors the MCCH notification information in the target cell, receives the MBMS service when the MBMS service is interested, and then performs step 404.

Application example two

When the idle state UE that is interested in receiving the MBMS service starts to be interested in the MBMS service, the scenario of setting the MBMS frequency priority and performing cell selection or reselection, as shown in FIG. 5, includes: Step 501: The network side sends a cell selection or Reselect the relevant configuration information.

Step 502: The UE sets the MBMS frequency priority to the highest, and performs cell selection or reselection according to the cell selection or reselection criteria.

In this embodiment, the UE that is interested in receiving the MBMS service sets the MBMS frequency priority to the highest time: when the UE starts to be interested in a certain MBMS service, and does not know when the MBMS service starts.

If the cell where the UE is located is a closed subscriber group (CSG, Closed Subscriber Group) cell, The UE uses the MBMS frequency as the highest priority frequency;

If the cell in which the UE is located is a Closed Subscriber Group (CSG) cell, the UE uses the MBMS frequency as the highest priority frequency.

Step 503, the UE enters the target cell through the cell selection or reselection process, determines whether the MBMS service of interest starts, and if yes, proceeds to step 504, otherwise proceeds to step 506 or returns to step 502;

The method for the UE to determine whether the MBMS service of interest starts is: the UE reads the SIB13 first, and then reads the MCCH message. If there is an MBMS service identifier of interest in the MCCH message, the MBMS service of interest has started, otherwise indicating that the interested The MBMS business has not started.

Step 504: The UE receives the MBMS service in the target cell until the MBMS service is terminated. If the MBMS service of interest is started in the target cell, the UE receives the MBMS service in the target cell.

The MBMS service termination may be the end of the MBMS service transmission, or the MBMS service termination caused by other reasons. For example, the higher priority MBMS service preempts the MBMS service resource through the ARP Pre-emption, or suspends the MBMS service according to the counting result (suspension). ), or receive a unicast paging message, or the UE receives an emergency call, and so on.

Step 505: The UE no longer receives the MBMS service, and the UE no longer sets the MBMS frequency to the highest priority, and the process ends.

The UE does not receive the MBMS service, which means that the UE terminates receiving the MBMS service, and is not ready to continue receiving other MBMS services;

Step 506: The UE monitors the MCCH notification information in the target cell, receives the MBMS service when the MBMS service is interested, and then performs step 504.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program that instructs the associated hardware to be stored in a computer readable storage medium, such as a read only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

The above embodiments are only intended to illustrate the technical solutions of the present invention and are not to be construed as limiting the invention. It should be understood by those skilled in the art that the present invention may be modified or equivalently substituted without departing from the spirit and scope of the invention.

Industrial applicability

Using the above implementation scheme of the MBMS frequency priority setting, the idle state user equipment (UE) that is interested in receiving the MBMS service sets the MBMS frequency to the highest priority when performing cell selection or reselection; after receiving the MBMS service termination, UE no longer sets MBMS frequency to the highest priority. Effectively avoids network congestion and excessive load.

Claims

Claim

A method for configuring a frequency priority of a multimedia broadcast multicast service (MBMS), the method comprising:

2. The method of claim 1 wherein:

The method further includes: determining, after the user equipment enters a target cell, the interested

Whether the MBMS service starts, if it starts, it receives the MBMS service in the target cell until the MBMS service is terminated, and if it does not start, it continues to monitor the multicast control channel (MCCH) notification information.

3. The method of claim 2, wherein:

4. The method of claim 3, wherein:

The start time of the MBMS service is T1, the minimum time interval between the time when the MBMS frequency priority is set and the start time of the MBMS service is T, and T2 = T1 - Τ; then the user equipment sets the MBMS frequency priority to be less than T2. Within the preset range;

5. The method of claim 3, further comprising:

6. The method of claim 1 wherein: The user equipment sets the MBMS frequency to the highest priority when starting to be interested in the MBMS service;

The method further includes: after the user equipment enters the target cell, determining whether the MBMS service of interest starts, if it starts, receiving the MBMS service in the target cell, until the MBMS service is terminated, and if not, continuing to monitor the MCCH notification information or Return to the source cell.

7. The method of claim 2 or 6, wherein:

The MBMS service termination includes one or more of the following situations:

8. The method of claim 1 wherein:

The fact that the MBMS frequency is no longer the highest priority means:

The user equipment performs cell reselection according to the frequency priority set by the network side, and does not select from the MBMS frequency. If the selected suitable cell includes the source cell, the user equipment reselects to the source cell, such as the selected suitable cell. If the source cell is not included, the user equipment randomly selects a camp in the selected suitable cell.

9. A user equipment for configuring a multimedia broadcast multicast service (MBMS) frequency priority, comprising a selection module and a receiving module, when the user equipment is in an idle state:

The selecting module is configured to: when the user equipment is interested in receiving the MBMS service, set the MBMS frequency to the highest priority for cell selection or reselection; and when the target cell receives the MBMS service termination, the MBMS frequency as the highest priority;

10. The user equipment of claim 9, wherein:

The user equipment further includes a judging module, configured to: after the user equipment enters the target cell, determine whether the MBMS service received by the user starts, and if notified, notify the receiving module to start The MBMS service is received until the MBMS service is terminated, and if not started, the multicast control channel (MCCH) notification information is continuously monitored.

11. The user equipment of claim 10, wherein:

The selection module is set to:

12. The user equipment of claim 11, wherein:

Let the start time of the MBMS service be T1, the minimum time interval between the time when the MBMS frequency priority is set and the start time of the MBMS service is T, and T2 = T1 - T; then the selection module is set to a preset that is less than Τ2 at the time. Set the MBMS frequency priority within the range;

13. The user equipment of claim 11, wherein:

14. The user equipment of claim 10, wherein:

The selection module is configured to set the MBMS frequency to the highest priority when the user equipment starts to be interested in the MBMS service;

The user equipment further includes a judging module, configured to: determine, after the user equipment enters the target cell, whether the MBMS service of interest starts, if not, notify the receiving module to receive the MBMS service, until the MBMS service is terminated, if not started, Continue to listen to the MCCH notification information or notify the selection module to return to the source cell.

15. The user equipment according to claim 10 or 14, wherein:

The MBMS service termination includes one or more of the following situations:

The MBMS service is terminated; the higher priority MBMS service preempts the MBMS service resource; the MBMS service is suspended according to the counting result; and the user equipment receives the unicast paging The user equipment receives an emergency call.

16. The user equipment of claim 9, wherein:

The selection module is configured to not use the MBMS frequency as the highest priority in the following manner: performing cell reselection according to the frequency priority set by the network side, and not selecting from the MBMS frequency, for example, selecting a suitable cell to include The source cell reselects the user equipment to the source cell, otherwise randomly selects one of the selected suitable cells.

17. A system for configuring an MBMS frequency priority,

A network side device and a user equipment according to any one of claims 9 to 16;