CN103916923B - The method, apparatus and system that terminal redirects under a kind of multimode network state - Google Patents

Abstract

The present invention discloses a method, device and system for redirecting a terminal in a multi-mode network state, the main content of which includes: the network side searches for the communication network supported by the terminal in the adjacent cell of the current serving cell of the terminal. The RAT information that matches the standard information, sorts the determined RAT information according to the set priority, and sends the sorted RAT information to the terminal in a redirection message, so that the terminal sorts according to the network side. Standard RAT information quickly locates redirected frequency point information, reduces the probability of terminal redirection failure caused by providing a single redirected RAT information in the prior art, shortens terminal redirection time, and improves user service satisfaction.

Description

A method, device and system for terminal redirection in multi-mode network state

technical field

The present invention relates to the field of wireless communication, and in particular to a method, device and system for terminal redirection in a multi-mode network state.

Background technique

In the existing wireless communication field, to solve the problem of incomplete coverage of communication network signals, a terminal redirection technology appears.

The redirection is for a terminal that supports a multi-mode or multi-band network. When performing a service connection with the network side in a certain network mode or a certain frequency band network, due to the network coverage, load sharing or the characteristics of the service itself, etc. The reason is that the terminal receives a network disconnection request message sent by the network side, requesting to disconnect the current service connection, and reconnect to a network of another mode or other frequency band according to the redirection information carried in the network disconnection request message to continue execution way of business.

It can be seen that the main reason for the redirection is that the coverage of the network signal is not complete. For example, the operator has deployed LTE network and GSM network, among which, the LTE network is used for hotspot coverage, that is, the LTE network signal is covered in areas with large traffic volume; while the GSM network is used for full area coverage. In this scenario, assuming that the terminal is within the coverage of the LTE network signal and uses the LTE network for business connections, as the terminal moves, when the terminal moves out of the coverage of the LTE network signal, the network side sends a redirection message to the terminal, indicating The terminal switches from the LTE network to the GSM network according to the received redirection message.

Currently, in the multi-mode network state, there are two methods for terminal redirection:

The first method is that the network side selects a RAT information for the terminal according to the measurement result reported by the terminal, and instructs the terminal to perform redirection.

Specifically, first, in the service connection state, the terminal receives a measurement instruction issued by the network side, and the measurement instruction is used to instruct the terminal to measure the network signals of the currently serving cell and other neighboring cells around the location;

Secondly, when the network signal of the current serving cell is lower than the set threshold, the terminal reports the RAT information of the neighboring cell whose measured network signal is higher than the set threshold as the measurement result to the network side;

Wherein, the set threshold is a critical value at which the terminal can access the network to perform services.

Third, the network side selects a RAT information for the terminal according to the received measurement results reported by the terminal, and carries the frequency point information of the RAT information in the redirection message and sends it to the terminal;

Fourth, when receiving the redirection message, the terminal disconnects the current service connection, performs redirection according to the frequency point information, and continues the service connection.

Redirection in this way has the following disadvantages: When the terminal fails to redirect according to the frequency point information of the selected RAT information, the network side needs to select the redirected RAT information for the terminal again, which will increase the redirection time of the terminal , the performance of service execution is degraded, resulting in a waste of network resources.

The second method is that the network side pre-configures the RAT information of the fixed mode network or the fixed frequency band as redirected RAT information, and instructs the terminal to perform redirection.

Specifically, first, the terminal receives a measurement instruction issued by the network side in the service connection state, and the measurement instruction is used to instruct the terminal to measure the network signal of the currently serving cell;

Secondly, when the network signal of the current serving cell is lower than the set threshold, the terminal sends a redirection request message to the network side;

Wherein, the set threshold is a critical value at which the terminal can access the network to perform services.

Third, the network side selects a RAT information that matches the network standard information from the preset RAT information according to the standard information of the terminal's current access network, and carries the frequency point information of the RAT information in the redirection message sent to the terminal;

Fourth, when receiving the redirection message, the terminal disconnects the current service connection, performs redirection according to the frequency point information, and continues the service connection.

Although this method does not require the terminal to measure the network signals of neighboring cells, which reduces the requirements for the performance of the terminal itself, the redirection in this way still has the following defects: the frequency point information of the terminal according to the selected redirected RAT information After searching, the network signal corresponding to the RAT information cannot be searched, resulting in redirection failure, which will reduce the efficiency of terminal redirection, increase the time of terminal redirection, reduce the performance of service execution, and cause a waste of network resources.

To sum up, in the prior art, during the redirection process of the terminal, there is a single redirection RAT information obtained, which increases the probability of terminal redirection failure, resulting in a long time for the terminal to perform redirection and poor service execution performance. question.

Contents of the invention

Embodiments of the present invention provide a method, device, and system for terminal redirection in a multi-mode network state, which are used to solve the problem that the obtained redirection RAT information is single in the process of terminal redirection in the prior art, which increases the number of terminals The probability of redirection failure leads to long redirection time for terminals and poor service execution performance.

A method for redirecting a terminal in a multi-mode network state, the method comprising:

The network side searches the adjacent cell of the serving cell where the terminal is currently located for the wireless access mode RAT information that matches the standard information of the communication network supported by the terminal;

The network side sorts the determined RAT information according to the set priority, carries the sorted RAT information in a redirection message and sends it to the terminal, instructing the terminal to perform redirection.

A method for redirecting a terminal in a multi-mode network state, the method comprising:

The terminal receives the redirection message sent by the network side;

The terminal performs redirection according to the redirection message, where the sorted RAT information is carried in the redirection message.

A device for redirecting terminals in a multi-mode network state, including:

A search module, configured to search for wireless access mode RAT information that matches the standard information of the communication network supported by the terminal in a neighboring cell of the serving cell where the terminal is currently located;

The sorting sending module is configured to sort the determined RAT information according to the set priority, carry the sorted RAT information in a redirection message and send it to the terminal, and instruct the terminal to perform redirection.

A terminal comprising:

The receiving module is used to receive the redirection message returned by the network side;

The redirection module is configured to perform redirection according to the redirection message, where the RAT information is carried in the redirection message.

A system for terminal redirection in a multi-mode network state, including:

The network side is used to search the adjacent cells of the serving cell where the terminal is currently located for the wireless access mode RAT information that matches the standard information of the communication network supported by the terminal, and perform the determined RAT information according to the set priority. Sorting, carrying the sorted RAT information in a redirection message and sending it to the terminal, instructing the terminal to perform redirection;

The terminal is configured to receive a redirection message returned by the network side, and perform redirection according to the redirection message.

The beneficial effects of the present invention are as follows:

In the embodiment of the present invention, the network side searches for RAT information that matches the standard information of the communication network supported by the terminal in the target cell adjacent to the serving cell where the terminal is currently located, and sorts the determined RAT information according to the set priority , carrying the sorted RAT information in a redirection message and sending it to the terminal, instructing the terminal to perform redirection, so that the frequency point information for the terminal to perform redirection is no longer limited to a fixed network standard, but is sorted according to the network side The RAT information of various network standards quickly locates and redirects the frequency point information, which reduces the probability of terminal redirection failure caused by providing a single redirection RAT information in the prior art, shortens the terminal redirection time, and improves the user's business. satisfaction.

Description of drawings

FIG. 1 is a flowchart of a method for redirecting a terminal in a multi-mode network state according to Embodiment 1 of the present invention;

2 is a flowchart of a method for redirecting a terminal in a multi-mode network state according to Embodiment 2 of the present invention;

FIG. 3 is a schematic diagram of a terminal determining redirection information;

4 is a schematic structural diagram of a device for redirecting a terminal in a multi-mode network state according to Embodiment 3 of the present invention;

FIG. 5 is a schematic structural diagram of a terminal according to Embodiment 4 of the present invention;

FIG. 6 is a schematic structural diagram of a system for redirecting a terminal in a multi-mode network state according to the sixth embodiment.

Detailed ways

In order to achieve the purpose of the present invention, the embodiment of the present invention provides a method, device and system for redirecting a terminal in a multi-mode network state. Through the network side, the target cell adjacent to the serving cell where the terminal is currently located is searched for The terminal supports RAT information matching the standard information of the communication network, sorts the determined RAT information according to the set priority, carries the sorted RAT information in a redirection message and sends it to the terminal, instructing the terminal to perform redirection.

Compared with the existing technology, the redirected frequency point information of the terminal is no longer limited to a fixed network standard, but quickly locates the redirected frequency point information according to the RAT information of various network standards sorted by the network side, The probability of terminal redirection failure caused by providing single redirection RAT information in the prior art is reduced, the time for terminal redirection is shortened, and service satisfaction of users is improved.

Various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiment one:

As shown in FIG. 1 , it is a flowchart of a method for redirecting a terminal in a multi-mode network state according to Embodiment 1 of the present invention, and the method includes:

Step 101: The network side searches the adjacent cells of the serving cell where the terminal is currently located for the radio access mode RAT information that matches the standard information of the communication network supported by the terminal.

Wherein, the RAT information includes frequency point information of the RAT information, and the one RAT information corresponds to multiple frequency point information.

For example: when the RAT information is information about accessing TD-LTE, the corresponding frequency point information may be LTE FDD1800MHz, or LTE FDD2600MHz.

In step 101, when a service occurs between the terminal and the network side, the network side can determine the serving cell where the terminal is currently located, and detect the serving cell where the terminal is currently located, and determine that when the network resource utilization rate of the current serving cell is high, Searching for RAT information of a wireless access mode that matches the standard information of the communication network supported by the terminal in a neighboring cell of the serving cell where the terminal is currently located.

The adjacent cell of the serving cell where the terminal is currently located: a cell with the same network system and network standard and different frequency point information from the cell where the terminal currently performs services; or a cell that is in the same network system and different from the cell where the terminal currently performs services A cell of the network standard; or a cell of a different network system from the cell currently performing services of the terminal.

Preferably, before the network side searches for RAT information for the terminal, the method further includes: receiving a measurement report sent by the terminal.

Wherein, the measurement report includes standard information of the communication network supported by the terminal.

Specifically, the ways for the network side to acquire the standard information of the communication network supported by the terminal are not limited to the following two:

The first way: When the terminal accesses the communication network and prepares to establish a service connection, it actively reports the standard information of the communication network supported by itself, wherein the standard information of the supported communication network includes: the standard information of the 2G network (for example: GSM standard information), 3G network system information (for example: TD-SCDMA system information, WCDMA system information or CDMA2000 system information), TD-LTE network system information, etc.

When receiving the standard information including the communication network supported by the terminal from the terminal, the network side saves the standard information of the communication network supported by the terminal locally, and sends a measurement control command to the terminal.

Wherein: the measurement control instruction is used to instruct the terminal to monitor the signal quality (for example: signal strength, etc.) of the current serving cell when performing a service connection.

Preferably, the terminal sends a measurement report to the network side when determining that the network signal quality of the currently accessed serving cell is lower than a set threshold.

Wherein, the set threshold is a critical condition for the terminal to be able to access the current communication network.

The second method: After the terminal accesses the communication network and establishes a service connection, it detects the signal quality of its own serving cell according to the instruction information on the network side, and sends a measurement report to the network side, and the terminal will support the standard information of the communication network to carry Sent to the network side in the measurement report.

Specifically, the terminal may carry the RAT information of the serving cell and the frequency point information of the RAT information in the measurement report, and the network side determines the current service of the terminal according to the received RAT information of the serving cell and the frequency point information of the RAT information. district.

The network side searches the adjacent cells of the serving cell where the terminal is currently located for the radio access mode RAT information that matches the standard information of the communication network supported by the terminal.

For example: assume that the RAT information of the serving cell A where the current terminal is located and the frequency point information of the RAT information are LTEFDD1800MHz, and the adjacent cells of A cell include B cell, C cell, and D cell. Among them, the RAT information of B cell and the RAT information The frequency point information is LTE FDD2600MHz, the RAT information of cell C and the frequency point information of RAT information are GSM1800MHz, the RAT information of cell D and the frequency point information of RAT information are TD-SCDMA2600MHz, and the standard information of the communication network supported by the terminal is GSM network and TD-LTE network.

When the terminal measures that the signal quality of A cell is lower than the set threshold, the measurement report carrying the RAT information of A cell and the frequency point information of the RAT information is sent to the network side; when the network side receives the measurement report, the Search the RAT information that matches the GSM network and TD-LTE network in the adjacent cells B, C and D of the serving cell corresponding to A, and determine that the RAT information that can be used for re-access includes the RAT information and access information for accessing the GSM network. Enter the RAT information of the TD-LTE network, wherein: the frequency point information corresponding to the RAT information for accessing the GSM network includes: GSM1800MHz; the frequency point information corresponding to the RAT information for accessing the TD-LTE network includes: LTE FDD1800MHz and LTE FDD2600MHz.

Step 102: sort the determined RAT information according to the set priority.

Wherein, the set priority conditions can be changed according to actual needs, and are not limited here.

For example: the determined RAT information includes: RAT information for accessing 2G networks (for example: GSM system information), RAT information for accessing 3G networks (for example: TD-SCDMA system information, WCDMA system information or CDMA2000 system information), access RAT information of TD-LTE network;

The priority condition is the network bandwidth of different standard networks;

Therefore, the determined RAT information is sorted according to the set priority, and the order of priority from high to low is: RAT information of TD-LTE network, RAT information of 3G network, and RAT information of 2G network.

Still taking the example in step 101 as an example, when the determined RAT information is the RAT information for accessing the GSM network and the RAT information for accessing the TD-LTE network, then the result of sorting the determined RAT information is: access The RAT information of the TD-LTE network has priority over the RAT information of accessing the GSM network.

In addition, the network side can sort the determined RAT information according to the service rate currently performed by the mobile user terminal, and the closer to the service rate currently performed by the mobile user terminal, the higher the priority of the corresponding RAT information; On the contrary, the corresponding RAT information has a lower priority.

For example: the current service performed by the terminal is a video-on-demand service, and the 3G network can meet the rate requirements of the video-on-demand service. Therefore, the priority of the determined RAT message of the 3G network can be set to the highest;

The service currently executed by the terminal is a voice service, and the 2G network can meet the rate requirement of the voice service. Therefore, the determined priority of the RAT message of the 2G network can be set to the highest.

In this way, effective offloading of terminals accessing the same network can be realized, more network resources can be saved for use by other terminals, and the utilization rate of network resources can be improved.

Further, the network side can also sort according to the load status of the communication network corresponding to the determined RAT information, wherein, the smaller the network load, the higher the priority of the corresponding RAT information; conversely, the greater the network load, the corresponding RAT information the lower the priority.

In this way, by assigning different priorities to RAT messages, it is possible to quickly determine the redirected network when the terminal is redirected, reduce the operating pressure of the high-load network, increase the speed of terminal access, and achieve load balance between networks .

Preferably, when the RAT information includes frequency point information corresponding to multiple RAT information, the network side first sorts the multiple frequency point information corresponding to one RAT information according to the set conditions, and sorts the sorted The frequency point information is used as the RAT information set.

Specifically, for example: one RAT information corresponds to multiple frequency point information: LTE information corresponds to two frequency point information of LTE FDD1800MHz and LTE FDD2600MHz, and the priority of LTE FDD1800MHz is determined according to the set conditions, then the LTE information set {LTE FDD1800MHz Better than LTE FDD2600MHz}.

Second, sort the obtained multiple RAT information sets according to the set priorities.

Wherein, the setting condition may be determined according to empirical information, which is not specifically limited here.

For example: Assuming that the found RAT information includes: 2G information set, 3G information set and LTE information set, then the sorting result obtained according to the set priority conditions is: the LTE information set is better than the 3G information set, and the 3G information set is better than the 3G information set. 2G information collection.

Step 103: Carry the sorted RAT information in a redirection message and send it to the terminal.

Wherein, the purpose of sending the redirection message is to instruct the terminal to perform redirection.

In step 103, after sorting the determined RAT information, the network side determines the frequency point information corresponding to each RAT information, carries the determined RAT information and the arrangement order of the RAT information in a redirection message and sends it to the terminal.

Through the solution of Embodiment 1, the frequency point information redirected by the terminal is no longer limited to a fixed network standard, but the frequency point information for redirection is quickly located according to the RAT information of various network standards sorted by the network side, The probability of terminal redirection failure caused by providing single redirection RAT information in the prior art is reduced, the time for terminal redirection is shortened, and service satisfaction of users is improved.

Embodiment two:

As shown in FIG. 2 , it is a flow chart of a method for redirecting a terminal in a multi-mode network state according to Embodiment 2 of the present invention. The method includes:

Step 201: The terminal receives a redirection message delivered by the network side.

In step 201, before receiving the redirection message sent by the network side, the terminal can perform the following two operations when accessing the current network to perform a service connection:

The first operation mode: first, receive a measurement report sent by the network side, and the measurement report instructs the terminal to monitor the network information quality of the currently accessed serving cell.

Secondly, when the terminal determines that the network signal quality of the currently accessed serving cell is lower than the set threshold, it sends a measurement report to the network side.

Wherein: the set threshold is a critical condition for the terminal to access the current network.

The second mode of operation: firstly, the terminal measures the network signal quality of the currently accessed serving cell when the service is connected.

Secondly, when it is determined that the network signal quality of the currently accessed serving cell is lower than the set threshold, the terminal generates a measurement report and sends it to the network side, wherein the measurement report includes the standard information of the communication network supported by the terminal.

Step 202: The terminal receives a redirection message sent by the network side, and performs redirection according to the redirection message.

Wherein, the redirection message carries RAT information, and the RAT information is the RAT information found by the network side in the serving cell where the terminal is currently located and matches the standard information of the communication network supported by the terminal, and according to the set The priority is obtained after sorting the determined RAT information.

In step 202, before the terminal performs redirection, the method further includes: selecting a frequency point information capable of redirection from the received redirection message.

Specifically, according to the arrangement order of the RAT information in the redirection message, the terminal sequentially performs the following operations on multiple frequency point information in one RAT information until the frequency point information that can be redirected is determined:

Select unmeasured frequency point information in the RAT information;

Perform target cell measurement according to the frequency point information, and determine the network signal quality of the target cell corresponding to the frequency point information;

Judging whether the determined network signal quality is not less than the set threshold value, if so, determining that the frequency point information is frequency point information that can be redirected; otherwise, continuing to perform the frequency point information measurement operation in the RAT information.

Specifically, first, the terminal selects a piece of RAT information, wherein the selected RAT information satisfies that no monitoring is performed and has the highest priority in the current redirection message.

Secondly, for the RAT message, perform the following operations respectively, as shown in Figure 3, which is a schematic diagram of determining redirection information for the terminal:

Step 1: Select unmeasured frequency point information in the RAT information.

In the first step, when selecting the frequency point information in the RAT information, the frequency point information may also be selected according to the order in which the frequency point information is sorted.

Specifically, the frequency point information selected each time is the unmeasured frequency point information with a higher ranking level.

Step 2: Perform target cell measurement according to the frequency point information, and determine the network signal quality of the target cell corresponding to the frequency point information.

Step 3: Determine whether the determined network signal quality is not less than the set threshold value, if so, determine that the frequency point information is the frequency point information that can be redirected; otherwise, continue to perform frequency point information measurement in the RAT information operate.

Therefore, as long as the terminal monitors that the network signal quality is suitable for access, it can perform redirection and re-establish the service connection.

In this way, the terminal does not need to measure the received RAT information blindly, which ensures the probability of successful redirection of the terminal, reduces the time required for redirection, and improves user experience.

It should be noted that when the terminal detects all the RAT messages in the redirection message and does not determine the frequency point information that can be used for redirection, the terminal enters the state of no service area, and periodically starts cell search to restore the signal in time .

Embodiment three:

As shown in FIG. 4 , it is a schematic structural diagram of a device for terminal redirection in a multi-mode network state according to Embodiment 3 of the present invention. The device includes: a search module 11 and a sorting and sending module 12, wherein:

A search module 11, configured to search for wireless access mode RAT information that matches the standard information of the communication network supported by the terminal in a neighboring cell of the serving cell where the terminal is currently located;

The sorting sending module 12 is configured to sort the determined RAT information according to the set priority, carry the sorted RAT information in a redirection message and send it to the terminal, and instruct the terminal to perform redirection.

Wherein, the priority of the setting is determined according to the network bandwidth of networks of different standards.

The adjacent cell of the serving cell where the terminal is currently located: a cell with the same network system and network standard and different frequency point information from the cell where the terminal currently performs services; or a cell that is in the same network system and different from the cell where the terminal currently performs services A cell of the network standard; or a cell of a different network system from the cell currently performing services of the terminal.

The RAT information includes frequency point information corresponding to the RAT information.

The sorting sending module 12 is specifically configured to sort a plurality of frequency point information corresponding to a kind of RAT information according to the set conditions, and use the sorted frequency point information as the RAT information set, and according to the set priority Sorting the obtained multiple RAT information sets.

Preferably, the device further includes: a receiving module 13, wherein:

The receiving module 13 is configured to receive the measurement report reported by the terminal before searching for the wireless access mode RAT information matching the standard information of the communication network supported by the terminal, the measurement report including the information of the communication network supported by the terminal format information.

Embodiment four:

As shown in FIG. 5, it is a schematic structural diagram of a terminal according to Embodiment 4 of the present invention. The terminal includes: a receiving module 21 and a redirecting module 22, wherein:

The receiving module 21 is configured to receive the redirection message returned by the network side;

The redirection module 22 is configured to perform redirection according to the redirection message, wherein the redirection message carries RAT information.

Preferably, the terminal further includes: a signal monitoring module 23, wherein:

The signal monitoring module 23 is used to measure the network signal quality of the currently accessed serving cell when the service is connected before receiving the redirection message sent by the network side, and determine the network signal quality of the currently accessed serving cell When the threshold is smaller than the set threshold, a measurement report is generated and sent to the network side, wherein the measurement report includes standard information of the communication network supported by the terminal.

The terminal also includes: a frequency point information determination module 24, wherein:

Frequency point information determination module 24, after receiving the redirection message returned by the network side, before redirecting according to the redirection message, according to the order of arrangement of the RAT information, perform the following for multiple frequency point information in one RAT information in turn Operate until the frequency point information that can be redirected is determined:

Select unmeasured frequency point information in the RAT information;

Perform target cell measurement according to the frequency point information, and determine the network signal quality of the target cell corresponding to the frequency point information;

Judging whether the determined network signal quality is not less than the set threshold value, if so, determining that the frequency point information is frequency point information that can be redirected; otherwise, continuing to perform the frequency point information measurement operation in the RAT information.

Preferably, the one RAT information includes sorted multiple frequency point information;

The frequency point determination module 24 is specifically configured to select frequency point information that has a higher ranking level and has not been measured in the RAT information.

Embodiment five:

As shown in FIG. 6, it is a schematic structural diagram of a system for terminal redirection in a multi-mode network state according to Embodiment 6, and the system includes:

The network side 31 is used to search the adjacent cells of the serving cell where the terminal is currently located for the wireless access mode RAT information that matches the standard information of the communication network supported by the terminal, and compare the determined RAT according to the set priority. Sorting the information, carrying the sorted RAT information in a redirection message and sending it to the terminal, instructing the terminal to perform redirection;

The terminal 32 is configured to receive a redirection message returned by the network side, and perform redirection according to the redirection message.

Specifically, the terminal 32 is specifically configured to measure the network signal quality of the currently accessed serving cell during service connection, and when it is determined that the network signal quality of the currently accessed serving cell is less than the set threshold, A measurement report is generated and sent to the network side, wherein the measurement report includes standard information of the communication network supported by the terminal.

The terminal 32 is specifically configured to perform the following operations on multiple frequency point information in one RAT information in sequence according to the arrangement order of the RAT information, until the frequency point information that can be redirected is determined:

Select unmeasured frequency point information in the RAT information;

Perform target cell measurement according to the frequency point information, and determine the network signal quality of the target cell corresponding to the frequency point information;

Judging whether the determined network signal quality is not less than the set threshold value, if so, determining that the frequency point information is frequency point information that can be redirected; otherwise, continuing to perform the frequency point information measurement operation in the RAT information.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (19)

1. a kind of method that terminal redirects under multimode network state, which is characterized in that including：

The system for the communication network that the neighbor cell search for the serving cell that network side is currently located in terminal is supported with the terminal The wireless access way RAT information of formula information match；

Network side is ranked up determining RAT information according to the priority of setting, and the RAT information carrying after sequence is being reset Terminal is sent into message, instruction terminal redirects；

Wherein, network side occurs to determine the serving cell that terminal is currently located when business between terminal and network side, and to end It holds the serving cell being currently located to be detected, when determining that the network resource utilization of current service cell is higher, works as in terminal It is searched in the neighboring community of preceding place serving cell and supports the wireless of standard information match of communication network to connect with the terminal Enter mode RAT information；

Network side currently executes the service rate of business according to mobile subscriber terminal, is ranked up for determining RAT information, with shifting Employ family currently execute business service rate it is closer, the priority of corresponding RAT information is higher；Conversely, corresponding RAT The priority of information is lower；

Network side is ranked up also according to the load condition of the determining corresponding communication network of RAT information, wherein network load is got over Small, the priority of corresponding RAT information is higher；Conversely, network load is bigger, the priority of corresponding RAT information is lower.

2. the method as described in claim 1, which is characterized in that network side is searching the communication network supported with the terminal Before the wireless access way RAT information of standard information match, the method further includes：

Network side receives the measurement report that terminal reports, and the standard of the communication network of terminal support is contained in the measurement report Information.

3. the method as described in claim 1, which is characterized in that the neighboring community for the serving cell that the terminal is currently located： The cell that business is currently executed from terminal is same network system, with network formats and the different cell of frequency point information；Or with end The current cell for executing business in end is same network system, the cell of different network formats；Or currently execute business with terminal Cell is the cell of different network systems.

4. the method as described in claim 1, which is characterized in that contain the corresponding frequency point letter of RAT information in the RAT information Breath；

Network side is ranked up determining RAT information according to the priority of setting, specifically includes：

A kind of corresponding multiple frequency point informations of RAT information are ranked up by network side according to the condition of setting, by the frequency after sequence Point information is as the RAT information aggregates；

Network side is ranked up obtained multiple RAT information aggregates according to the priority of setting.

5. the method as described in claim 1, which is characterized in that the terminal supports that the standard information of communication network includes：GSM At least one of the network information, TD-SCDMA network information, the WCDMA network informations and TD-LTE network informations network formats Information.

6. method as described in claim 1 or 4, which is characterized in that the priority of the setting：According to networks with different systems Network bandwidth size determines.

7. a kind of method that terminal redirects under multimode network state, which is characterized in that including：

Terminal receives the redirection message that network side issues, wherein network side occurs true when business between terminal and network side Determine the serving cell that terminal is currently located, and the serving cell that terminal is currently located is detected, determines current service cell Network resource utilization it is higher when, searched in the neighboring community that terminal is currently located serving cell supported with the terminal it is logical The wireless access way RAT information of the standard information match of communication network；Network side currently executes industry according to mobile subscriber terminal The service rate of business is ranked up for determining RAT information, and the service rate that business is currently executed with mobile subscriber is closer , the priority of corresponding RAT information is higher；Conversely, the priority of corresponding RAT information is lower；Network side is also according to determination The load condition of the corresponding communication network of RAT information be ranked up, wherein network load is smaller, corresponding RAT information it is excellent First grade is higher；Conversely, network load is bigger, the priority of corresponding RAT information is lower；

Terminal is redirected according to the redirection message, wherein RAT information after sequence is carried in the redirection message.

8. the method for claim 7, which is characterized in that before terminal receives the redirection message that network side issues, institute The method of stating further includes：

In service connection, the network signal quality of the serving cell to being currently accessed measures terminal；

When determining that the network signal quality for the serving cell being currently accessed is less than the thresholding of setting, terminal generates measurement report, And it is sent to network side, wherein the standard information of the communication network of terminal support is contained in the measurement report.

9. the method for claim 7, which is characterized in that after terminal receives the redirection message that network side returns, root Before being redirected according to the redirection message, the method further includes：

Terminal puts in order according to RAT information, and the multiple frequency point informations being directed to successively in a RAT information execute following behaviour Make, until being determined to the frequency point information redirected：

Select unmeasured frequency point information in the RAT information；

Target cell measurement is carried out according to the frequency point information, determines the network signal matter of the corresponding Target cell of the frequency point information Amount；

Determining network signal quality is judged whether not less than the threshold value set, if so, the determining frequency point information is can The frequency point information redirected；Otherwise, the frequency point information continued to execute in RAT information measures operation.

10. method as claimed in claim 9, which is characterized in that contain multiple frequencies after sequence in one RAT information Point information；

Unmeasured frequency point information in the RAT information is selected, is specifically included：

The rank that selects to sort in the RAT information is higher and unmeasured frequency point information.

11. the equipment that terminal redirects under a kind of multimode network state, which is characterized in that including：

Searching module, the communication network that the neighbor cell search of the serving cell for being currently located in terminal is supported with the terminal Business occurs between terminal and network side for the wireless access way RAT information of the standard information match of network, wherein network side When determine serving cell that terminal is currently located, and the serving cell that terminal is currently located is detected, determines current service When the network resource utilization of cell is higher, searched and the terminal branch in the neighboring community that terminal is currently located serving cell Hold the wireless access way RAT information of the standard information match of communication network；

Sort sending module, and for being ranked up to determining RAT information according to the priority of setting, the RAT after sequence is believed Breath carries and is sent to terminal in redirecting message, and instruction terminal redirects, wherein network side is according to mobile subscriber terminal The current service rate for executing business, is ranked up for determining RAT information, and the business speed of business is currently executed with mobile subscriber Rate is closer, and the priority of corresponding RAT information is higher；Conversely, the priority of corresponding RAT information is lower；Network side is also It is ranked up according to the load condition of the determining corresponding communication network of RAT information, wherein network load is smaller, corresponding RAT The priority of information is higher；Conversely, network load is bigger, the priority of corresponding RAT information is lower.

12. equipment as claimed in claim 11, which is characterized in that the equipment further includes：

Receiving module, for the wireless access way in the standard information match for searching the communication network supported with the terminal Before RAT information, the measurement report that terminal reports is received, the system of the communication network of terminal support is contained in the measurement report Formula information.

13. equipment as claimed in claim 11, which is characterized in that the serving cell that the terminal is currently located it is adjacent small Area：The cell that business is currently executed from terminal is same network system, with network formats and the different cell of frequency point information；Or with The cell that terminal currently executes business is same network system, the cell of different network formats；Or currently execute business with terminal Cell be different network systems cell.

14. equipment as claimed in claim 11, which is characterized in that contain the corresponding frequency point of RAT information in the RAT information Information；

The sequence sending module, be specifically used for according to the condition of setting by a kind of corresponding multiple frequency point informations of RAT information into Row sequence, using the frequency point information after sequence as the RAT information aggregates, and according to the priority of setting to obtained multiple RAT Information aggregate is ranked up.

15. a kind of terminal, which is characterized in that including：

Receiving module, the redirection message for receiving network side return, wherein network side occurs between terminal and network side The serving cell that terminal is currently located is determined when business, and the serving cell that terminal is currently located is detected, and is determined current When the network resource utilization of serving cell is higher, searched and the end in the neighboring community that terminal is currently located serving cell Support the wireless access way RAT information of the standard information match of communication network in end；Network side is worked as according to mobile subscriber terminal The service rate of preceding execution business is ranked up for determining RAT information, the service rate of business is currently executed with mobile subscriber Closer, the priority of corresponding RAT information is higher；Conversely, the priority of corresponding RAT information is lower；Network side also root It is ranked up according to the load condition of the determining corresponding communication network of RAT information, wherein network load is smaller, corresponding RAT letters The priority of breath is higher；Conversely, network load is bigger, the priority of corresponding RAT information is lower；

Redirection module, for being redirected according to the redirection message, wherein carry RAT in the redirection message Information.

16. terminal as claimed in claim 15, which is characterized in that the terminal further includes：

Signal monitoring module, for before receiving the redirection message that issues of network side, when service connection, to what is be currently accessed The network signal quality of serving cell measures, and is set when determining that the network signal quality for the serving cell being currently accessed is less than When fixed thresholding, measurement report is generated, and be sent to network side, wherein the logical of terminal support is contained in the measurement report The standard information of communication network.

17. terminal as claimed in claim 15, which is characterized in that the terminal further includes：

Frequency point information determining module carries out after receiving the redirection message that network side returns according to the redirection message Before redirection, according to putting in order for RAT information, the multiple frequency point informations execution being directed to successively in a RAT information is following Operation, until being determined to the frequency point information redirected：

Select unmeasured frequency point information in the RAT information；

Target cell measurement is carried out according to the frequency point information, determines the network signal matter of the corresponding Target cell of the frequency point information Amount；

Determining network signal quality is judged whether not less than the threshold value set, if so, the determining frequency point information is can The frequency point information redirected；Otherwise, the frequency point information continued to execute in RAT information measures operation.

18. terminal as claimed in claim 17, which is characterized in that contained in one RAT information multiple after sequence Frequency point information；

The frequency point determining module is specifically used for selecting in the RAT information sequence rank higher and unmeasured frequency point information.

19. the system that terminal redirects under a kind of multimode network state, which is characterized in that including：

Network side supports communication network for being searched in the neighboring community for the serving cell that terminal is currently located with the terminal Standard information match wireless access way RAT information, and determining RAT information is arranged according to the priority of setting RAT information after sequence is carried and is sent to terminal in redirecting message by sequence, and instruction terminal redirects, wherein network Side occurs to determine the serving cell that terminal is currently located when business between terminal and network side, and to clothes that terminal is currently located Business cell is detected, and when determining that the network resource utilization of current service cell is higher, serving cell is currently located in terminal Neighboring community in search with the terminal support communication network standard information match wireless access way RAT information； Network side currently executes the service rate of business according to mobile subscriber terminal, is ranked up for determining RAT information, is used with mobile The service rate that family currently executes business is closer, and the priority of corresponding RAT information is higher；Conversely, corresponding RAT information Priority it is lower；Network side is ranked up also according to the load condition of the determining corresponding communication network of RAT information, wherein Network load is smaller, and the priority of corresponding RAT information is higher；Conversely, network load is bigger, corresponding RAT information it is preferential Grade is lower；

Terminal, the redirection message for receiving network side return, redirects according to the redirection message.