CN104936245A - Realization method of SRVCC, system and terminal thereof - Google Patents

Abstract

The invention discloses single radio voice call continuity (SRVCC) realization method. The method comprises the following steps that after a LTE module of a terminal receives a SRVCC command through a first radio frequency channel, a 2G/3G target frequency point in the SRVCC command and target cell information are sent to a 2G/3G module of the terminal, and bearing correlation processing is performed on data bearing except for voice bearing according to a covering condition of a LTE network; the 2G/3G module carries out random access on a corresponding target cell through a second radio frequency channel and sends a SRVCC switching completion command. The invention simultaneously discloses the terminal and a realization system of the SRVCC.

Description

The implementation method of SRVCC, system and terminal

Technical field

The present invention relates to wireless communication technology, particularly relate to implementation method, system and the terminal of a kind of single wireless mode continuous voice call (SRVCC, Single Radio Voice Call Continuity).

Background technology

3G (Third Generation) Moblie Partnership Program (3GPP, 3rd Generation Partnership Project) standard regulation: LTE voice (VoLTE, Voice over LTE) terminal should support circuit domain dropping (CSFB, Circuit Switched Fallback) pattern and Generation Mobile Telecommunication System technology/G mobile communication (2G/3G) pattern.

When being under the VoLTE network coverage, VoLTE terminal works is under VoLTE pattern; When being under the CSFB network coverage not supporting VoLTE function, VoLTE terminal works is under CSFB pattern; When being under the 2G/3G network coverage, VoLTE terminal works is under 2G/3G pattern.According to 3GPP standard: when VoLTE terminal moves to 2G/3G network's coverage area from VoLTE network's coverage area in VoLTE call is carried out, SRVCC technology should be passed through, call is switched to the circuit commutative field (CS of 2G/3G network from VoLTE speech, Circuit Switched Domain) call, to keep voice continuity.

Meanwhile, 3GPP standard also specifies: when VoLTE end is at VoLTE network's coverage area edge or CSFB network's coverage area edge, also needs to initiate SRVCC process, to keep voice continuity.Give an example, when VoLTE end is in VoLTE communication process, and when moving to CSFB network's coverage area from VoLTE network's coverage area, that is: VoLTE end is when the edge of VoLTE network's coverage area, because CSFB network's coverage area does not support VoLTE function, so evolved node (eNB, evolved Node B) needs to initiate SRVCC process, VoLTE call switched to the CS call of 2G/3G, thus to keep voice continuity.But because now VoLTE terminal is still in the overlay area of LTE network, after adopting the technical scheme of existing SRVCC, VoLTE terminal cannot carry out data voice voice and packet data concurrent service.

Summary of the invention

For solving the technical problem of existing existence, the embodiment of the present invention provides the implementation method of a kind of SRVCC, system and terminal.

Embodiments provide the implementation method of a kind of SRVCC, comprising:

After the LTE module of terminal receives SRVCC order by the first radio-frequency channel, 2G/3G target frequency in described SRVCC order and target cell information are sent to the 2G/3G module of terminal, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

Described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, and sends SRVCC and switched order.

In such scheme, described 2G/3G target frequency in described SRVCC order and target cell information are sent to the 2G/3G module of terminal before, described method also comprises:

Described LTE module is resolved described SRVCC order;

Correspondingly, the 2G/3G target frequency parsed and target cell information are sent to described 2G/3G module by described LTE module.

In such scheme, described method also comprises:

Described terminal is when carrying out start attachment or carrying out tracing section updating TAU, described LTE module reports the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal on described first radio-frequency channel to first network side, described 2G/3G module reports 2G/3G single mode measurement capability to second network side on described second radio-frequency channel.

In such scheme, before the LTE module of described terminal receives SRVCC order by the first radio-frequency channel, described method also comprises:

Described LTE module sends to described first network side and meets the measurement result of handoff threshold and the frequency of correspondence; Wherein,

The frequency of the described measurement result and correspondence that meet handoff threshold is: according to described first network side be the 2G/3G adjacent area frequency list of described terminal configuration and handoff threshold obtain meet the measurement result of handoff threshold and the frequency of correspondence.

In such scheme, described method also comprises:

When described terminal is in the overlay area of VoLTE network, described LTE module is attached in LTE network, and takies described first radio-frequency channel; Described 2G/3G module is attached to 2G/3G network, and takies the second channel passage.

In such scheme, the described coverage condition according to LTE network carries out carrying relevant treatment to other Deta bearer except voice bearer, comprising:

Other Deta bearer described is hung up by described LTE module, and judges whether the LTE frequency point meeting resident condition, according to judged result, recovers other Deta bearer described or is operated in off-grid state.

In such scheme, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

To the Reference Signal Received Power (RSRP of the service frequency of self attachment, Reference SignalReceiving Power) measure, when determining that described service frequency meets the resident condition of LTE according to measurement result, described LTE module recovers other Deta bearer described be suspended.

In such scheme, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining there is the LTE frequency point meeting the resident condition of LTE in described LTE frequency point of adhering to, after described LTE module completes random access procedure in the LTE frequency point meeting the resident condition of LTE, recover other Deta bearer described be suspended.

In such scheme, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining the LTE frequency point not meeting the resident condition of LTE in described LTE frequency point of adhering to, described LTE module is operated in off-grid state.

In such scheme, other Deta bearer described in described LTE module is suspended by tracing section updating TAU Procedure recovery.

In such scheme, described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, comprising:

Described 2G/3G module is by described second radio-frequency channel frequency modulation extremely described target frequency;

Described 2G/3G module carries out random access procedure on described second radio-frequency channel and described Target cell.

The embodiment of the present invention additionally provides the implementation method of a kind of SRVCC, comprising:

After the LTE module of terminal receives the SRVCC order from first network side by the first radio-frequency channel, 2G/3G target frequency in described SRVCC order and target cell information are sent to the 2G/3G module of terminal, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

Described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, and sends SRVCC and switched order.

In such scheme, described 2G/3G target frequency in described SRVCC order and target cell information are sent to the 2G/3G module of terminal before, described method also comprises:

Described LTE module is resolved described SRVCC order;

Correspondingly, the 2G/3G target frequency parsed and target cell information are sent to described 2G/3G module by described LTE module.

In such scheme, described method also comprises:

Described terminal is being carried out start attachment or is carrying out tracing section updating (TAU, Tracking AreaUpdate) time, described LTE module reports the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal on described first radio-frequency channel to described first network side, described 2G/3G module reports 2G/3G single mode measurement capability to second network side on described second radio-frequency channel.

In such scheme, described method also comprises:

Described first network side is the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold;

Described LTE module sends to described first network side and meets the measurement result of handoff threshold and the frequency of correspondence; Wherein,

The frequency of the described measurement result and correspondence that meet handoff threshold is: according to described first network side be the 2G/3G adjacent area frequency list of described terminal configuration and handoff threshold obtain meet the measurement result of handoff threshold and the frequency of correspondence.

In such scheme, described method also comprises:

When described terminal is in the overlay area of VoLTE network, described LTE module is attached in LTE network, and takies described first radio-frequency channel; Described 2G/3G module is attached to 2G/3G network, and takies the second channel passage.

In such scheme, the described coverage condition according to LTE network carries out carrying relevant treatment to other Deta bearer except voice bearer, comprising:

Other Deta bearer described is hung up by described LTE module, and judges whether the LTE frequency point meeting resident condition, according to judged result, recovers other Deta bearer described or is operated in off-grid state.

In such scheme, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

Measure the RSRP of service frequency of self attachment, when determining that described service frequency meets the resident condition of LTE according to measurement result, described LTE module recovers other Deta bearer described be suspended.

In such scheme, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining there is the LTE frequency point meeting the resident condition of LTE in described LTE frequency point of adhering to, after described LTE module completes random access procedure in the LTE frequency point meeting the resident condition of LTE, recover other Deta bearer described be suspended.

In such scheme, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining the LTE frequency point not meeting the resident condition of LTE in described LTE frequency point of adhering to, described LTE module is operated in off-grid state.

In such scheme, other Deta bearer described in described LTE module is suspended by TAU Procedure recovery.

In such scheme, described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, comprising:

Described 2G/3G module is by described second radio-frequency channel frequency modulation extremely described target frequency;

Described 2G/3G module carries out random access procedure on described second radio-frequency channel and described Target cell.

The embodiment of the present invention further provides a kind of terminal, comprising: the first LTE module and a 2G/3G module; Wherein,

Described first LTE module, after receiving SRVCC order by the first radio-frequency channel, 2G/3G target frequency in described SRVCC order and target cell information are sent to a described 2G/3G module, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

A described 2G/3G module, after receiving 2G/3G target frequency and target cell information that described first LTE module sends, carries out Stochastic accessing by the second radio-frequency channel, and sends SRVCC and switched order on the Target cell of correspondence.

In such scheme, described first LTE module, also for resolving described SRVCC order, correspondingly, sends to a described 2G/3G module by the 2G/3G target frequency parsed and target cell information.

In such scheme, described first LTE module, also for described terminal carry out start attachment or carry out TAU time, described first radio-frequency channel reports to first network side the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal;

Correspondingly, described 2G/3G module, also for described terminal carry out start attachment or carry out TAU time, described second radio-frequency channel reports 2G/3G single mode measurement capability to second network side.

In such scheme, described first LTE module, also for before receiving SRVCC order by the first radio-frequency channel, sends to described first network side and meets the measurement result of handoff threshold and the frequency of correspondence; Wherein,

The frequency of the described measurement result and correspondence that meet handoff threshold is: according to described first network side be the 2G/3G adjacent area frequency list of described terminal configuration and handoff threshold obtain meet the measurement result of handoff threshold and the frequency of correspondence.

In such scheme, described first LTE module, also for when described terminal is in the overlay area of VoLTE network, is attached in LTE network, and takies described first radio-frequency channel;

Correspondingly, a described 2G/3G module, also for when described terminal is in the overlay area of VoLTE network, is attached to 2G/3G network, and takies the second channel passage.

What the embodiment of the present invention additionally provided a kind of SRVCC realizes system, comprising: first network side and terminal; Described terminal comprises: the second LTE module and the 2nd 2G/3G module; Wherein,

Described first network side, for sending SRVCC order to described terminal;

Described second LTE module, for received the SRVCC order from described first network side by the first radio-frequency channel after, 2G/3G target frequency in described SRVCC order and target cell information are sent to described 2nd 2G/3G module, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

Described 2nd 2G/3G module, after receiving 2G/3G target frequency and target cell information that described second LTE module sends, carries out Stochastic accessing by the second radio-frequency channel, and sends SRVCC and switched order on the Target cell of correspondence.

In such scheme, described second LTE module, also for resolving described SRVCC order, correspondingly, sends to described 2nd 2G/3G module by the 2G/3G target frequency parsed and target cell information.

In such scheme, described system also comprises: second network side; Wherein,

Described second LTE module, also for described terminal carry out start attachment or carry out TAU time, described first radio-frequency channel reports to described first network side the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal;

Correspondingly, described 2nd 2G/3G module, also for described terminal carry out start attachment or carry out TAU time, described terminal carry out start adhere to or carry out TAU time, described second radio-frequency channel reports 2G/3G single mode measurement capability to second network side.

In such scheme, described first network side, also for being the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold; And receive the described measurement result of the second LTE module transmission and the frequency of correspondence;

Described second LTE module, also meets the measurement result of handoff threshold and the frequency of correspondence for sending to described first network side; Wherein,

The frequency of the described measurement result and correspondence that meet handoff threshold is: according to described first network side be the 2G/3G adjacent area frequency list of described terminal configuration and handoff threshold obtain meet the measurement result of handoff threshold and the frequency of correspondence.

In such scheme, described second LTE module, also for when described terminal is in the overlay area of VoLTE network, is attached in LTE network, and takies described first radio-frequency channel;

Correspondingly, described 2nd 2G/3G module, also for when described terminal is in the overlay area of VoLTE network, is attached to 2G/3G network, and takies the second channel passage.

The implementation method of the SRVCC that the embodiment of the present invention provides, system and terminal, after the LTE module of terminal receives SRVCC order by the first radio-frequency channel, by the 2G/3G target frequency in described SRVCC order and and target cell information send to the 2G/3G module of terminal, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer; Described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel, and send SRVCC and switched order, the terminal of the embodiment of the present invention is VoLTE double-standby terminal, so, when described end is at VoLTE network's coverage area edge or CSFB network's coverage area edge, carrying out in process at SRVCC can Quick-return data service, realizes data and speech voice and packet data concurrent service, the high-speed data service making user can enjoy LTE network to bring, and then promote Consumer's Experience.

Accompanying drawing explanation

In accompanying drawing (it is not necessarily drawn in proportion), similar Reference numeral can describe similar parts in different views.The similar reference numerals with different letter suffix can represent the different examples of similar parts.Accompanying drawing generally shows each embodiment discussed herein by way of example and not limitation.

Fig. 1 is the implementation method schematic flow sheet of a kind of SRVCC of the embodiment of the present invention;

Fig. 2 is the implementation method schematic flow sheet of the another kind of SRVCC of the embodiment of the present invention;

Fig. 3 is embodiment of the present invention terminal structure schematic diagram;

Fig. 4 be embodiment of the present invention SRVCC realize system configuration schematic diagram.

Embodiment

The implementation method of SRVCC under existing VoLTE scene, mainly comprises the following steps:

Step 1:LTE network side is the frequency list of terminal configuration 2G/3G adjacent area and handoff threshold;

Step 2: after the 2G/3G adjacent area frequency list that the LTE module of terminal receives configuration and handoff threshold, the measurement result of satisfied measurement thresholding and frequency are reported LTE network side;

Step 3:LTE network side, according to the measurement result of terminal to report and frequency, issues SRVCC switching command to terminal, carries the 2G/3G target frequency of switching in SRVCC switching command;

Step 4: after the LTE module of terminal receives SRVCC switching command, sends the 2G/3G module of terminal to by the information of the target frequency comprised in SRVCC switching command and respective target cells;

Step 5: after the 2G/3G module of terminal receives the information of target frequency and respective target cells, take radio-frequency channel, by radio-frequency channel adjusting channel target frequency;

Step 6: successfully carry out Stochastic accessing on 2G/3G target frequency after, the 2G/3G module of terminal sends SRVCC handoff completion message to 2G/3G network side.

As can be seen from description above, existing VoLTE terminal is for singly to treat terminal, and only have a set of radio system, so, when VoLTE end is at VoLTE network's coverage area edge or CSFB network's coverage area edge, because now VoLTE terminal is still in the overlay area of LTE network, VoLTE terminal cannot carry out data and speech voice and packet data concurrent service, also just cannot enjoy the high-speed data service that LTE network is brought.

Based on this, in various embodiments of the present invention: after the LTE module of terminal receives SRVCC order by the first radio-frequency channel, by the 2G/3G target frequency in described SRVCC order and and target cell information send to the 2G/3G module of terminal, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer; Described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel, and sends SRVCC and switched order.

Again the present invention is described in further detail below in conjunction with drawings and the specific embodiments.

The implementation method of a kind of SRVCC of the embodiment of the present invention, is applied to VoLTE scene, and as shown in Figure 1, the method comprises the following steps:

Step 101: after the LTE module of terminal receives SRVCC order by the first radio-frequency channel, 2G/3G target frequency in described SRVCC order and target cell information are sent to the 2G/3G module of terminal, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

Here, described LTE module refers to: can make the module that described terminal works is required under LTE network;

Correspondingly, described 2G/3G module refers to: can make the module that described terminal works is required under 2G/3G network.

The terminal that the embodiment of the present invention provides is VoLTE double-standby terminal, and that is, described terminal supports CSFB pattern and 2G/3G pattern, and described terminal has LTE module and 2G module, or described terminal has LTE module and 3G module.When described 2G/3G module is 2G module, after described LTE module receives SRVCC order by the first radio-frequency channel, the 2G target frequency in described SRVCC order and target cell information are sent to the 2G module of terminal; When described 2G/3G module is 3G module, after described LTE module receives SRVCC order by the first radio-frequency channel, the 3G target frequency in described SRVCC order and target cell information are sent to the 3G module of terminal.

Before the 2G/3G module 2G/3G target frequency in described SRVCC order and target cell information being sent to terminal, the method can also comprise:

Described LTE module is resolved described SRVCC order, correspondingly, the 2G/3G target frequency parsed and target cell information are sent to described 2G/3G module by described LTE module, so that described 2G/3G module can identify 2G/3G target frequency in described SRVCC order and target cell information.

Before execution step 101, the method can also comprise:

When described terminal is in the overlay area of VoLTE network, described LTE module is attached in LTE network, and takies described first radio-frequency channel; Described 2G/3G module is attached to 2G/3G network, and takies the second channel passage.

Before execution step 101, the method can also comprise:

Described terminal is when carrying out start attachment or carrying out TAU, described LTE module reports the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal on described first radio-frequency channel to first network side, described 2G/3G module reports 2G/3G single mode measurement capability to second network side on described second radio-frequency channel, so that described terminal can complete SRVCC smoothly.

Wherein, described first network side is network side corresponding to described LTE module, is LTE network side; Described second network side is network side corresponding to described 2G/3G module, is 2G/3G network side.Here, described network side refers to network equipment, such as base station etc.

Before execution step 101, the method can also comprise:

Described LTE module sends to described first network side and meets the measurement result of handoff threshold and the frequency of correspondence, so that described first network side can send the SRVCC order of carrying 2G/3G target frequency and target cell information to described terminal; Wherein, the frequency of the described measurement result and correspondence that meet handoff threshold is that the 2G/3G adjacent area frequency list of described terminal configuration and handoff threshold obtain according to described first network side; Here, described first network side is can determine as required the opportunity of the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold, that is, triggering described first network side is can determine as required on opportunity of the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold.

The described coverage condition according to LTE network carries out carrying relevant treatment to other Deta bearer except voice bearer, specifically comprises:

Other Deta bearer described is hung up by described LTE module, and judges whether the LTE frequency point meeting resident condition, according to judged result, recovers other Deta bearer described or is operated in off-grid state;

Wherein, described hang-up by other Deta bearer described refers to: the process not carrying out other data.

Describedly judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, specifically comprising:

Measure the RSRP of service frequency of self attachment, when determining that described service frequency meets the resident condition of LTE according to measurement result, described LTE module recovers other Deta bearer described be suspended; Or,

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining there is the LTE frequency point meeting the resident condition of LTE in described LTE frequency point of adhering to, after described LTE module completes random access procedure in the LTE frequency point meeting the resident condition of LTE, recover other Deta bearer described be suspended; Or,

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining the LTE frequency point not meeting the resident condition of LTE in described LTE frequency point of adhering to, described LTE module is operated in off-grid state.

Wherein, described determine whether described service frequency meet the resident condition of LTE according to measurement result be implemented as those skilled in the art's conventional techniques means, repeat no more here.

Described determine whether to have in described LTE frequency point of adhering to the LTE frequency point meeting the resident condition of LTE be implemented as those skilled in the art's conventional techniques means, repeat no more here.

Described Preset Time can be arranged as required, such as: 2 hours etc.

During practical application, other Deta bearer described in described LTE module is suspended by TAU Procedure recovery.

Step 102: described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, and send SRVCC and switched order.

Here, described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, specifically comprises:

Described 2G/3G module is by described second radio-frequency channel frequency modulation extremely described target frequency;

Described 2G/3G module carries out random access procedure on described second radio-frequency channel and described Target cell.

Described transmission SRVCC has switched order and has referred to: described 2G/3G module sends SRVCC to described second network side and switched order.

As can be seen from description above, terminal described in the embodiment of the present invention is VoLTE double-standby terminal, the method that the embodiment of the present invention provides, when described end is at VoLTE network's coverage area edge or CSFB network's coverage area edge, carrying out in process at SRVCC can Quick-return data service, realize data and speech voice and packet data concurrent service, the high-speed data service making user can enjoy LTE network to bring, and then promote Consumer's Experience.

The implementation method of the another kind of SRVCC of the embodiment of the present invention, be applied to VoLTE scene, as shown in Figure 2, the method comprises the following steps:

Step 201: after the LTE module of terminal receives the SRVCC order from first network side by the first radio-frequency channel, 2G/3G target frequency in described SRVCC order and target cell information are sent to the 2G/3G module of terminal, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

Here, described LTE module refers to: can make the module that described terminal works is required under LTE network;

Correspondingly, described 2G/3G module refers to: can make the module that described terminal works is required under 2G/3G network.

The terminal that the embodiment of the present invention provides is VoLTE double-standby terminal, and that is, described terminal supports CSFB pattern and 2G/3G pattern, and described terminal has LTE module and 2G module, or described terminal has LTE module and 3G module.When described 2G/3G module is 2G module, the 2G target frequency in described SRVCC order and target cell information are sent to the 2G module of terminal after receiving the SRVCC order from first network side by the first radio-frequency channel by described LTE module; When described 2G/3G module is 3G module, the 3G target frequency in described SRVCC order and target cell information are sent to the 3G module of terminal after receiving the SRVCC order from first network side by the first radio-frequency channel by described LTE module.

Before the 2G/3G module 2G/3G target frequency in described SRVCC order and target cell information being sent to terminal, the method can also comprise:

Described LTE module is resolved described SRVCC order, correspondingly, the 2G/3G target frequency parsed and target cell information are sent to described 2G/3G module by described LTE module, so that described 2G/3G module can identify 2G/3G target frequency in described SRVCC order and target cell information.

Before execution step 201, the method can also comprise:

When described terminal is in the overlay area of VoLTE network, described LTE module is attached in LTE network, and takies described first radio-frequency channel; Described 2G/3G module is attached to 2G/3G network, and takies the second channel passage.

Before execution step 201, the method can also comprise:

Described terminal is when carrying out start attachment or carrying out TAU, described LTE module reports the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal on described first radio-frequency channel to first network side, described 2G/3G module reports 2G/3G single mode measurement capability to second network side on described second radio-frequency channel, so that described terminal can complete SRVCC smoothly.

Wherein, described first network side is network side corresponding to described LTE module, is LTE network side; Described second network side is network side corresponding to described 2G/3G module, is 2G/3G network side.Here, described network side refers to network equipment, such as base station etc.

The method can also comprise:

Described first network side is the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold;

Described LTE module sends to described first network side and meets the measurement result of handoff threshold and the frequency of correspondence, so that described first network side can send the SRVCC order of carrying 2G/3G target frequency and target cell information to described terminal; Wherein, described first network side is can determine as required the opportunity of the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold, that is, triggering described first network side is can determine as required on opportunity of the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold.

The frequency of the described measurement result and correspondence that meet handoff threshold is that the 2G/3G adjacent area frequency list of described terminal configuration and handoff threshold obtain according to described first network side.

The described coverage condition according to LTE network carries out carrying relevant treatment to other Deta bearer except voice bearer, specifically comprises:

Other Deta bearer described is hung up by described LTE module, and judges whether the LTE frequency point meeting resident condition, according to judged result, recovers other Deta bearer described or is operated in off-grid state;

Wherein, described hang-up by other Deta bearer described refers to: the process not carrying out other data.

Describedly judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, specifically comprising:

Measure the RSRP of service frequency of self attachment, when determining that described service frequency meets the resident condition of LTE according to measurement result, described LTE module recovers other Deta bearer described be suspended; Or,

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining there is the LTE frequency point meeting the resident condition of LTE in described LTE frequency point of adhering to, after described LTE module completes random access procedure in the LTE frequency point meeting the resident condition of LTE, recover other Deta bearer described be suspended; Or,

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining the LTE frequency point not meeting the resident condition of LTE in described LTE frequency point of adhering to, described LTE module is operated in off-grid state.

Wherein, described determine whether described service frequency meet the resident condition of LTE according to measurement result be implemented as those skilled in the art's conventional techniques means, repeat no more here.

Described determine whether to have in described LTE frequency point of adhering to the LTE frequency point meeting the resident condition of LTE be implemented as those skilled in the art's conventional techniques means, repeat no more here.

Described Preset Time can be arranged as required, such as: 2 hours etc.

During practical application, other Deta bearer described in described LTE module is suspended by TAU Procedure recovery.

Step 202: described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, and send SRVCC and switched order.

Here, described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, specifically comprises:

Described 2G/3G module is by described second radio-frequency channel frequency modulation extremely described target frequency;

Described 2G/3G module carries out random access procedure with described Target cell on described second radio-frequency channel.

Described transmission SRVCC has switched order and has referred to: described 2G/3G module sends SRVCC to described second network side and switched order.

As can be seen from description above, terminal described in the embodiment of the present invention is VoLTE double-standby terminal, the method that the embodiment of the present invention provides, when described end is at VoLTE network's coverage area edge or CSFB network's coverage area edge, carrying out in process at SRVCC can Quick-return data service, realize data and speech voice and packet data concurrent service, the high-speed data service making user can enjoy LTE network to bring, and then promote Consumer's Experience.

For realizing the method shown in Fig. 1, the embodiment of the present invention additionally provides a kind of terminal, and as shown in Figure 3, this terminal comprises: the first LTE module 31 and a 2G/3G module 32; Wherein,

First LTE module 31, after receiving SRVCC order by the first radio-frequency channel, 2G/3G target frequency in described SRVCC order and target cell information are sent to a 2G/3G module 32, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

One 2G/3G module 32, after receiving 2G/3G target frequency and target cell information that the first LTE module 31 sends, carries out Stochastic accessing by the second radio-frequency channel, and sends SRVCC and switched order on the Target cell of correspondence.

Wherein, described first LTE module 31 refers to: can make the module that described terminal works is required under LTE network;

Correspondingly, a described 2G/3G module 32 refers to: can make the module that described terminal works is required under 2G/3G network.

The terminal that the embodiment of the present invention provides is VoLTE double-standby terminal, and that is, described terminal supports CSFB pattern and 2G/3G pattern, and described terminal has LTE module and 2G module, or described terminal has LTE module and 3G module.When a described 2G/3G module 32 is 2G module, after described first LTE module 31 receives SRVCC order by the first radio-frequency channel, the 2G target frequency in described SRVCC order and target cell information are sent to the 2G module of terminal; When a described 2G/3G module 32 is 3G module, after described first LTE module 31 receives SRVCC order by the first radio-frequency channel, the 3G target frequency in described SRVCC order and target cell information are sent to the 3G module of terminal.

Described first LTE module 31, also for resolving described SRVCC order, correspondingly, a described 2G/3G module 32 the 2G/3G target frequency parsed and target cell information sent to a described 2G/3G module 32, so that can identify 2G/3G target frequency in described SRVCC order and target cell information.

Described first LTE module 31, also for when described terminal is in the overlay area of VoLTE network, is attached in LTE network, and takies described first radio-frequency channel;

Correspondingly, a described 2G/3G module 32, also for when described terminal is in the overlay area of VoLTE network, is attached to 2G/3G network, and takies the second channel passage.

Described first LTE module 31, also for described terminal carry out start attachment or carry out TAU time, described first radio-frequency channel reports to first network side the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal; Correspondingly, described 2G/3G module 32, also for described terminal carry out start attachment or carry out TAU time, described second radio-frequency channel reports 2G/3G single mode measurement capability to second network side, so that described terminal can complete SRVCC smoothly.

Wherein, described first network side is network side corresponding to described LTE module, is LTE network side; Described second network side is network side corresponding to described 2G/3G module, is 2G/3G network side.Here, described network side refers to network equipment, such as base station etc.

Described first LTE module 31, also for before receiving SRVCC order by the first radio-frequency channel, described first network side sends to described first network side and meets the measurement result of handoff threshold and the frequency of correspondence, so that can send the SRVCC order of carrying 2G/3G target frequency and target cell information to described terminal; Wherein, the frequency of the described measurement result and correspondence that meet handoff threshold is that the 2G/3G adjacent area frequency list of described terminal configuration and handoff threshold obtain according to described first network side; Here, described first network side is can determine as required the opportunity of the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold, that is, triggering described first network side is can determine as required on opportunity of the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold.

The described coverage condition according to LTE network carries out carrying relevant treatment to other Deta bearer except voice bearer, specifically comprises:

Other Deta bearer described is hung up by described first LTE module 31, and judges whether the LTE frequency point meeting resident condition, according to judged result, recovers other Deta bearer described or is operated in off-grid state;

Wherein, described hang-up by other Deta bearer described refers to: the process not carrying out other data.

Describedly judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, specifically comprising:

Measure the RSRP of service frequency of self attachment, when determining that described service frequency meets the resident condition of LTE according to measurement result, described first LTE module 31 recovers other Deta bearer described be suspended; Or,

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described first LTE module 31 is searched for from the LTE frequency point of adhering in Preset Time, when determining there is the LTE frequency point meeting the resident condition of LTE in described LTE frequency point of adhering to, after described first LTE module 31 completes random access procedure in the LTE frequency point meeting the resident condition of LTE, recover other Deta bearer described be suspended; Or,

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described first LTE module 31 is searched for from the LTE frequency point of adhering in Preset Time, when determining the LTE frequency point not meeting the resident condition of LTE in described LTE frequency point of adhering to, described first LTE module 31 is operated in off-grid state.

Wherein, described determine whether described service frequency meet the resident condition of LTE according to measurement result be implemented as those skilled in the art's conventional techniques means, repeat no more here.

Described determine whether to have in described LTE frequency point of adhering to the LTE frequency point meeting the resident condition of LTE be implemented as those skilled in the art's conventional techniques means, repeat no more here.

Described Preset Time can be arranged as required, such as: 2 hours etc.

During practical application, other Deta bearer described in described first LTE module 31 is suspended by TAU Procedure recovery.

Describedly on the Target cell of correspondence, carry out Stochastic accessing by the second radio-frequency channel, specifically comprise:

A described 2G/3G module 32 is by described second radio-frequency channel frequency modulation extremely described target frequency;

A described 2G/3G module 32 carries out random access procedure on described second radio-frequency channel and described Target cell.

Described transmission SRVCC has switched order and has referred to: a described 2G/3G module 32 sends SRVCC to described second network side and switched order.

As can be seen from description above, terminal described in the embodiment of the present invention is VoLTE double-standby terminal, when described end is at VoLTE network's coverage area edge or CSFB network's coverage area edge, carrying out in process at SRVCC can Quick-return data service, realize data and speech voice and packet data concurrent service, the high-speed data service making user can enjoy LTE network to bring, and then promote Consumer's Experience.

For realizing the method shown in Fig. 2, what the embodiment of the present invention additionally provided a kind of SRVCC realizes system, and as shown in Figure 4, this system comprises: first network side 41 and terminal 42; Terminal 42 comprises: the second LTE module 421 and the 2nd 2G/3G module 422; Wherein,

First network side 41, for sending SRVCC order to terminal 41;

Second LTE module 421, for received the SRVCC order from first network side 41 by the first radio-frequency channel after, 2G/3G target frequency in described SRVCC order and target cell information are sent to the 2nd 2G/3G module 422, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

2nd 2G/3G module 422, after receiving 2G/3G target frequency and target cell information that the second LTE module 421 sends, carries out Stochastic accessing by the second radio-frequency channel, and sends SRVCC and switched order on the Target cell of correspondence.

Wherein, described second LTE module 421 refers to: can make the module that described terminal works is required under LTE network;

Correspondingly, described 2nd 2G/3G module 422 refers to: can make the module that described terminal works is required under 2G/3G network.

The terminal that inventive embodiments provides is VoLTE double-standby terminal, and that is, described terminal supports CSFB pattern and 2G/3G pattern, and described terminal has LTE module and 2G module, or described terminal has LTE module and 3G module.When described 2nd 2G/3G module 422 is 2G module, 2G target frequency in described SRVCC order and target cell information are sent to the 2G module of terminal after receiving the SRVCC order from first network side by the first radio-frequency channel by described second LTE module 421; When described 2nd 2G/3G module 422 is 3G module, 3G target frequency in described SRVCC order and target cell information are sent to the 3G module of terminal after receiving the SRVCC order from first network side by the first radio-frequency channel by described second LTE module 421.

Described second LTE module 421, also for resolving described SRVCC order, correspondingly, described 2nd 2G/3G module 422 the 2G/3G target frequency parsed and target cell information sent to described 2nd 2G/3G module 422, so that can identify 2G/3G target frequency in described SRVCC order and target cell information.

Described second LTE module 421, also for when described terminal is in the overlay area of VoLTE network, is attached in LTE network, and takies described first radio-frequency channel; Correspondingly, described 2nd 2G/3G module 422, also for when described terminal is in the overlay area of VoLTE network, is attached to 2G/3G network, and takies the second channel passage.

This system can also comprise: second network side; Wherein,

Described second LTE module 421, also for described terminal 42 carry out start attachment or carry out TAU time, described first radio-frequency channel reports to described first network side 41 the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal; Correspondingly, described 2nd 2G/3G module 422, also for described terminal 42 carry out start attachment or carry out TAU time, described terminal 42 is when carrying out start attachment or carrying out TAU, described terminal described second radio-frequency channel reports 2G/3G single mode measurement capability to second network side, so that can complete SRVCC smoothly.

Wherein, described first network side 41 is the network side of described second LTE module 421 correspondence, is LTE network side; Described second network side is the network side of described 2nd 2G/3G module 422 correspondence, is 2G/3G network side.Here, described network side refers to network equipment, such as base station etc.

Described first network side 41, also for being the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold; And receive the described measurement result of the second LTE module 421 transmission and the frequency of correspondence;

Described second LTE module 421, also meet the measurement result of handoff threshold and the frequency of correspondence for sending to described first network side 41, so that described first network side energy 41 sends the SRVCC order of carrying 2G/3G target frequency and target cell information to described terminal 42; Wherein, described first network side 41 is can determine as required the opportunity of the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold, that is, triggering described first network side 41 is can determine as required on opportunity of described terminal 42 configuration of 2 G/3G adjacent area frequency list and handoff threshold.

The frequency of the described measurement result and correspondence that meet handoff threshold is that the 2G/3G adjacent area frequency list of described terminal 42 configuration and handoff threshold obtain according to described first network side 41.

The described coverage condition according to LTE network carries out carrying relevant treatment to other Deta bearer except voice bearer, specifically comprises:

Other Deta bearer described is hung up by described second LTE module 421, and judges whether the LTE frequency point meeting resident condition, according to judged result, recovers other Deta bearer described or is operated in off-grid state;

Wherein, described hang-up by other Deta bearer described refers to: the process not carrying out other data.

Describedly judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, specifically comprising:

Measure the RSRP of service frequency of self attachment, when determining that described service frequency meets the resident condition of LTE according to measurement result, described second LTE module 421 recovers other Deta bearer described be suspended; Or,

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described second LTE module 421 is searched for from the LTE frequency point of adhering in Preset Time, when determining there is the LTE frequency point meeting the resident condition of LTE in described LTE frequency point of adhering to, after described second LTE module 421 completes random access procedure in the LTE frequency point meeting the resident condition of LTE, recover other Deta bearer described be suspended; Or,

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described second LTE module 421 is searched for from the LTE frequency point of adhering in Preset Time, when determining the LTE frequency point not meeting the resident condition of LTE in described LTE frequency point of adhering to, described second LTE module 421 is operated in off-grid state.

Wherein, described determine whether described service frequency meet the resident condition of LTE according to measurement result be implemented as those skilled in the art's conventional techniques means, repeat no more here.

Described determine whether to have in described LTE frequency point of adhering to the LTE frequency point meeting the resident condition of LTE be implemented as those skilled in the art's conventional techniques means, repeat no more here.

Described Preset Time can be arranged as required, such as: 2 hours etc.

During practical application, other Deta bearer described in described second LTE module 421 is suspended by TAU Procedure recovery.

Describedly on the Target cell of correspondence, carry out Stochastic accessing by the second radio-frequency channel, specifically comprise:

Described 2nd 2G/3G module 422 is by described second radio-frequency channel frequency modulation extremely described target frequency;

Described 2nd 2G/3G module 422 carries out random access procedure with described Target cell on described second radio-frequency channel.

Described transmission SRVCC has switched order and has referred to: described 2nd 2G/3G module 422 sends SRVCC to described second network side and switched order.

As can be seen from description above, terminal described in the embodiment of the present invention is VoLTE double-standby terminal, when described end is at VoLTE network's coverage area edge or CSFB network's coverage area edge, carrying out in process at SRVCC can Quick-return data service, realize data and speech voice and packet data concurrent service, the high-speed data service making user can enjoy LTE network to bring, and then promote Consumer's Experience.

Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of hardware embodiment, software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code.

The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.

Claims (32)

1. an implementation method of single wireless mode continuous voice call SRVCC, it is characterized in that, described method comprises:

After the LTE module of terminal receives SRVCC order by the first radio-frequency channel, 2G/3G target frequency in described SRVCC order and target cell information are sent to the 2G/3G module of terminal, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

Described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, and sends SRVCC and switched order.

2. method according to claim 1, is characterized in that, described 2G/3G target frequency in described SRVCC order and target cell information are sent to the 2G/3G module of terminal before, described method also comprises:

Described LTE module is resolved described SRVCC order;

Correspondingly, the 2G/3G target frequency parsed and target cell information are sent to described 2G/3G module by described LTE module.

3. method according to claim 1, is characterized in that, described method also comprises:

Described terminal is when carrying out start attachment or carrying out tracing section updating TAU, described LTE module reports the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal on described first radio-frequency channel to first network side, described 2G/3G module reports 2G/3G single mode measurement capability to second network side on described second radio-frequency channel.

4. method according to claim 3, is characterized in that, before the LTE module of described terminal receives SRVCC order by the first radio-frequency channel, described method also comprises:

Described LTE module sends to described first network side and meets the measurement result of handoff threshold and the frequency of correspondence; Wherein,

The frequency of the described measurement result and correspondence that meet handoff threshold is: according to described first network side be the 2G/3G adjacent area frequency list of described terminal configuration and handoff threshold obtain meet the measurement result of handoff threshold and the frequency of correspondence.

5. method according to claim 3, is characterized in that, described method also comprises:

When described terminal is in the overlay area of VoLTE network, described LTE module is attached in LTE network, and takies described first radio-frequency channel; Described 2G/3G module is attached to 2G/3G network, and takies the second channel passage.

6. method according to claim 1, is characterized in that, the described coverage condition according to LTE network carries out carrying relevant treatment to other Deta bearer except voice bearer, comprising:

Other Deta bearer described is hung up by described LTE module, and judges whether the LTE frequency point meeting resident condition, according to judged result, recovers other Deta bearer described or is operated in off-grid state.

7. method according to claim 6, is characterized in that, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

Measure the Reference Signal Received Power RSRP of service frequency of self attachment, when determining that described service frequency meets the resident condition of LTE according to measurement result, described LTE module recovers other Deta bearer described be suspended.

8. method according to claim 6, is characterized in that, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining there is the LTE frequency point meeting the resident condition of LTE in described LTE frequency point of adhering to, after described LTE module completes random access procedure in the LTE frequency point meeting the resident condition of LTE, recover other Deta bearer described be suspended.

9. method according to claim 6, is characterized in that, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining the LTE frequency point not meeting the resident condition of LTE in described LTE frequency point of adhering to, described LTE module is operated in off-grid state.

10. the method according to any one of claim 7 to 9, is characterized in that, other Deta bearer described in described LTE module is suspended by tracing section updating TAU Procedure recovery.

11. methods according to any one of claim 1 to 9, it is characterized in that, described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, comprising:

Described 2G/3G module is by described second radio-frequency channel frequency modulation extremely described target frequency;

Described 2G/3G module carries out random access procedure on described second radio-frequency channel and described Target cell.

The implementation method of 12. 1 kinds of SRVCC, is characterized in that, described method comprises:

After the LTE module of terminal receives the SRVCC order from first network side by the first radio-frequency channel, 2G/3G target frequency in described SRVCC order and target cell information are sent to the 2G/3G module of terminal, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

Described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, and sends SRVCC and switched order.

13. methods according to claim 12, is characterized in that, described 2G/3G target frequency in described SRVCC order and target cell information are sent to the 2G/3G module of terminal before, described method also comprises:

Described LTE module is resolved described SRVCC order;

Correspondingly, the 2G/3G target frequency parsed and target cell information are sent to described 2G/3G module by described LTE module.

14. methods according to claim 12, is characterized in that, described method also comprises:

Described terminal is when carrying out start attachment or carrying out tracing section updating TAU, described LTE module reports the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal on described first radio-frequency channel to described first network side, described 2G/3G module reports 2G/3G single mode measurement capability to second network side on described second radio-frequency channel.

15. methods according to claim 12, is characterized in that, described method also comprises:

Described first network side is the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold;

Described LTE module sends to described first network side and meets the measurement result of handoff threshold and the frequency of correspondence; Wherein,

The frequency of the described measurement result and correspondence that meet handoff threshold is: according to described first network side be the 2G/3G adjacent area frequency list of described terminal configuration and handoff threshold obtain meet the measurement result of handoff threshold and the frequency of correspondence.

16. methods according to claim 14, is characterized in that, described method also comprises:

When described terminal is in the overlay area of VoLTE network, described LTE module is attached in LTE network, and takies described first radio-frequency channel; Described 2G/3G module is attached to 2G/3G network, and takies the second channel passage.

17. methods according to claim 12, is characterized in that, the described coverage condition according to LTE network carries out carrying relevant treatment to other Deta bearer except voice bearer, comprising:

Other Deta bearer described is hung up by described LTE module, and judges whether the LTE frequency point meeting resident condition, according to judged result, recovers other Deta bearer described or is operated in off-grid state.

18. methods according to claim 17, is characterized in that, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

Measure the RSRP of service frequency of self attachment, when determining that described service frequency meets the resident condition of LTE according to measurement result, described LTE module recovers other Deta bearer described be suspended.

19. methods according to claim 17, is characterized in that, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining there is the LTE frequency point meeting the resident condition of LTE in described LTE frequency point of adhering to, after described LTE module completes random access procedure in the LTE frequency point meeting the resident condition of LTE, recover other Deta bearer described be suspended.

20. methods according to claim 17, is characterized in that, described in judge whether the LTE frequency point meeting the resident condition of LTE, according to judged result, recover other Deta bearer described or be operated in off-grid state, comprising:

The RSRP of the service frequency of self attachment is measured, when determining that described service frequency does not meet the resident condition of LTE according to measurement result, described LTE module is searched for from the LTE frequency point of adhering in Preset Time, when determining the LTE frequency point not meeting the resident condition of LTE in described LTE frequency point of adhering to, described LTE module is operated in off-grid state.

21., according to claim 18 to the method described in 20 any one, is characterized in that, other Deta bearer described in described LTE module is suspended by TAU Procedure recovery.

22., according to claim 12 to the method described in 20 any one, is characterized in that, described 2G/3G module carries out Stochastic accessing by the second radio-frequency channel on the Target cell of correspondence, comprising:

Described 2G/3G module is by described second radio-frequency channel frequency modulation extremely described target frequency;

Described 2G/3G module carries out random access procedure on described second radio-frequency channel and described Target cell.

23. 1 kinds of terminals, is characterized in that, described terminal comprises: the first LTE module and a 2G/3G module; Wherein,

Described first LTE module, after receiving SRVCC order by the first radio-frequency channel, 2G/3G target frequency in described SRVCC order and target cell information are sent to a described 2G/3G module, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

A described 2G/3G module, after receiving 2G/3G target frequency and target cell information that described first LTE module sends, carries out Stochastic accessing by the second radio-frequency channel, and sends SRVCC and switched order on the Target cell of correspondence.

24. terminals according to claim 23, is characterized in that,

Described first LTE module, also for resolving described SRVCC order, correspondingly, sends to a described 2G/3G module by the 2G/3G target frequency parsed and target cell information.

25. terminals according to claim 23, it is characterized in that, described first LTE module, also for described terminal carry out start attachment or carry out TAU time, described first radio-frequency channel reports to first network side the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal;

Correspondingly, described 2G/3G module, also for described terminal carry out start attachment or carry out TAU time, described second radio-frequency channel reports 2G/3G single mode measurement capability to second network side.

26. terminals according to claim 25, is characterized in that, described first LTE module, also for before receiving SRVCC order by the first radio-frequency channel, send meet the measurement result of handoff threshold and the frequency of correspondence to described first network side; Wherein,

The frequency of the described measurement result and correspondence that meet handoff threshold is: according to described first network side be the 2G/3G adjacent area frequency list of described terminal configuration and handoff threshold obtain meet the measurement result of handoff threshold and the frequency of correspondence.

27. terminals according to any one of claim 23 to 26, is characterized in that,

Described first LTE module, also for when described terminal is in the overlay area of VoLTE network, is attached in LTE network, and takies described first radio-frequency channel;

Correspondingly, a described 2G/3G module, also for when described terminal is in the overlay area of VoLTE network, is attached to 2G/3G network, and takies the second channel passage.

28. 1 kinds of SRVCC realize system, it is characterized in that, described system comprises: first network side and terminal; Described terminal comprises: the second LTE module and the 2nd 2G/3G module; Wherein,

Described first network side, for sending SRVCC order to described terminal;

Described second LTE module, for received the SRVCC order from described first network side by the first radio-frequency channel after, 2G/3G target frequency in described SRVCC order and target cell information are sent to described 2nd 2G/3G module, and according to the coverage condition of LTE network, carrying relevant treatment is carried out to other Deta bearer except voice bearer;

Described 2nd 2G/3G module, after receiving 2G/3G target frequency and target cell information that described second LTE module sends, carries out Stochastic accessing by the second radio-frequency channel, and sends SRVCC and switched order on the Target cell of correspondence.

29. systems according to claim 28, is characterized in that, described second LTE module, also for resolving described SRVCC order, correspondingly, the 2G/3G target frequency parsed and target cell information are sent to described 2nd 2G/3G module.

30. systems according to claim 28, is characterized in that, described system also comprises: second network side; Wherein,

Described second LTE module, also for described terminal carry out start attachment or carry out TAU time, described first radio-frequency channel reports to described first network side the Double RF channel capacity of 2G, 3G and 4G measurement capability and described terminal;

Correspondingly, described 2nd 2G/3G module, also for described terminal carry out start attachment or carry out TAU time, described terminal carry out start adhere to or carry out TAU time, described second radio-frequency channel reports 2G/3G single mode measurement capability to second network side.

31. systems according to claim 30, is characterized in that,

Described first network side, also for being the frequency list of described terminal configuration 2G/3G adjacent area and handoff threshold; And receive the described measurement result of the second LTE module transmission and the frequency of correspondence;

Described second LTE module, also meets the measurement result of handoff threshold and the frequency of correspondence for sending to described first network side; Wherein,

The frequency of the described measurement result and correspondence that meet handoff threshold is: according to described first network side be the 2G/3G adjacent area frequency list of described terminal configuration and handoff threshold obtain meet the measurement result of handoff threshold and the frequency of correspondence.

32. systems according to any one of claim 28 to 31, is characterized in that,

Described second LTE module, also for when described terminal is in the overlay area of VoLTE network, is attached in LTE network, and takies described first radio-frequency channel;

Correspondingly, described 2nd 2G/3G module, also for when described terminal is in the overlay area of VoLTE network, is attached to 2G/3G network, and takies the second channel passage.