CN103858484A

CN103858484A - CSFB achieving method and device for same

Info

Publication number: CN103858484A
Application number: CN201380003350.7A
Authority: CN
Inventors: 梁健; 查双六; 舒文杰; 舒文江
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-06-14
Filing date: 2013-06-14
Publication date: 2014-06-11
Anticipated expiration: 2033-06-14
Also published as: CN103858484B; WO2014198070A1

Abstract

A CSFB achieving method and device for same. The method includes steps as follows: a network apparatus of a first network receiving an access requirement which is sent by a terminal and carries CSFB indicative information which is used for indicating the terminal to be a CSFB terminal that falls down from a resident second network to the first network and carries out an access operation; according to the CSFB indicative information, when the network apparatus recognizing the terminal as a CSFB terminal, the network apparatus assigning a wireless resource to the terminal according to a resource allocation strategy preset to the CSFB terminal; and the network apparatus transmitting a signal to the terminal on said assigned wireless resource.

Description

A kind of CSFB implementation method and equipment

Technical field

The present invention relates to wireless communication technology field, relate in particular to a kind of CSFB implementation method and equipment.

Background technology

LTE(Long Term Evolution, Long Term Evolution) network is full packet switching network, but speech business will be indispensable important service within a very long time.For guaranteeing to carry out smoothly high-quality speech business on LTE network, all active research proposed multiple voice services solution of each normal structure.

CSFB(Circuit Switched Fall Back, circuit domain dropping) be one of achievement of research topic in 3GPP R8.The background that this research topic proposes is LTE and CS(Circuit Switch Domain, circuit commutative field) wireless module of dual-mode terminal is single wireless pattern, there is LTE and UTRAN(UMTS Terrestrial Radio Access Network, UMTS Terrestrial radio access network; UMTS:Universal Mobile Telecommunications System, meaning is universal mobile telecommunications system)/GERAN(GSM/EDGE Radio Access Network, GSM EDGE Radio Access Network network; GSM:Global System of Mobile communication, meaning is global system for mobile communications; EDGE:Enhanced Data Rate for GSM Evolution, meaning is enhanced data rates for gsm evolution technology) bimodulus or the multimode terminal of access capability, in the time using LTE access, cannot receive/Power Generation Road territory service signal.Under LTE access, can initiate the CS business such as voice service in order to make terminal, and receive the paging of the CS business such as speech, and can be to terminal ongoing PS(Packet Switched Domain in LTE network, packet-switched domain) business correctly processes, and produced CSFB technology.

Building the LTE network initial stage, if there has been ripe UTRAN/GERAN network in operator, for the protection to CS investment, in conjunction with the deployment strategy of LTE network, operator can adopt original CS territory voice scheme that voice service is provided, and LTE network only deal with data business (comprise IMS data service; IMS:IP Multimedia Subsystem, meaning is IP Multimedia System).In this case, adopt CSFB technology, i.e. UE under LTE covering is in the time of processed voice business, and terminal first return back to CS territory, in CS territory processed voice business, reuse existing CS territory equipment and provide the object of traditional speech business for the user in LTE network with regard to having reached like this.

As shown in Figure 1, in current CSFB scheme, UE(User Equipment, subscriber equipment) under idle condition or while carrying out PS transfer of data, be operated in LTE network; When UE initiates audio call or while receiving call request, by switching or reuse adoption process, falls back to 2G network or 3G network as called as caller.Wherein, 2G network is taking GSM as representative, and 3G network is taking UMTS as representative.

UE falls back to 2G/3G network development process from LTE network, 2G/3G network of network equipment is in the time accessing processing to this UE, first be the resource of this UE assignment for command transmitting, in the resource of assignment, complete after signalling, for this UE assignment business transfer resource is with carry voice traffic data.

At present, UE falls back to the process of 2G/3G network from LTE, and signalling time delay is larger, affects user's impression.

Summary of the invention

The embodiment of the present invention provides a kind of CSFB implementation method and equipment, in order to targetedly to CSFB terminal assignments Radio Resource.

First aspect, provides a kind of circuit domain dropping CSFB implementation method, and described method comprises:

The access request that network equipment receiving terminal in first network sends, described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that described first network accesses that described CSFB indication information is used to indicate described terminal;

If it is CSFB terminal that the described network equipment identifies described terminal according to described CSFB indication information,, according to being the resource allocation strategy that described CSFB terminal arranges in advance, be described terminal assignments Radio Resource;

The described network equipment, on the Radio Resource of described assignment, carries out signalling with described terminal.

In conjunction with first aspect, in the possible implementation of the first, described first network is global system for mobile communications GSM network, and described resource allocation strategy comprises: be described CSFB terminal assignments Traffic Channel TCH, described TCH is for signalling; Or,

Described first network is universal mobile telecommunications system UMTS network, described resource allocation strategy comprises: the first strategy and/or the second strategy, wherein, described the first strategy is that the calling initiated in described CSFB terminal is in radio resource control RRC establishment stage, for the specific Signaling Radio Bearer SRB of described CSFB terminal assignments speed is carried out signalling; Described the second strategy is that the described calling initiated in described CSFB terminal is in RAB RAB establishment stage, for the described CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling.

In conjunction with the possible implementation of the first of first aspect, in the possible implementation of the second, in the time that described first network is described GSM network, described access request is channel request message;

Described basis is the resource allocation strategy that described CSFB terminal arranges in advance, for described terminal assignments Radio Resource comprises:

Base station controller BSC, according to described resource allocation strategy, is described terminal assignments TCH;

Described BSC sends to described terminal by the TCH of described assignment and is the base station of described Terminal Service, and indicates the TCH of assignment described in described terminal and described base station for signalling.

In conjunction with the possible implementation of the second of first aspect, in the third possible implementation, the described network equipment, on the Radio Resource of described assignment, after carrying out signalling, also comprises with described terminal:

Described BSC indicates described terminal that the TCH of described assignment is adjusted into speech business transmission mode.

In conjunction with the first, the second or the third possible implementation of first aspect, in the 4th kind of possible implementation, described CSFB indication information comprises CSFB mark and type of call, and described type of call comprises caller or called.

In conjunction with the possible implementation of the first of first aspect, in the 5th kind of possible implementation, in the time that described first network is described UMTS network, described access request is RRC connection request message;

If described resource allocation strategy comprises described the first strategy, the calling of initiating in described terminal is during in described RRC establishment stage, and radio network controller (RNC), according to described the second strategy, is specific SRB speed described in described terminal assignments; Described RNC sends to the base station into described Terminal Service by wireless link request message by described specific SRB speed, is connected and is set up message described specific SRB is sent to described terminal by RRC; Or,

If described resource allocation strategy comprises described the second strategy, the described calling of initiating in described terminal is during in described RAB establishment stage, and described RNC is according to described the second strategy, is the described terminal assignments asynchronous transfer mode of eating dishes without rice or wine; Described RNC sets up message by radio bearer RB and indicates described terminal and described base station for the described Terminal Service asynchronous mode of eating dishes without rice or wine described in adopting to carry out signalling; Or,

If described resource allocation strategy comprises described the first strategy and described the second strategy, the calling of initiating in described CSFB terminal is in RRC establishment stage, described RNC is according to described the first strategy, for specific SRB speed described in described terminal assignments, by described wireless link request message, described specific SRB speed is sent to the base station into described Terminal Service, set up message by described RRC connection described specific SRB is sent to described terminal; The described calling of initiating in described terminal is during in described RAB establishment stage, described RNC is according to described the second strategy, for the asynchronous transfer mode of eating dishes without rice or wine described in described terminal assignments, and set up message by described RB and indicate described terminal and described base station for the described Terminal Service asynchronous transfer mode of eating dishes without rice or wine described in adopting to carry out signalling.

Second aspect, provides a kind of circuit domain dropping CSFB implementation method, and described method comprises:

Terminal sends access request to the network equipment in first network, and described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that described first network accesses that described CSFB indication information is used to indicate described terminal;

Described terminal receives the Radio Resource of described network equipment assignment; Wherein, described Radio Resource is the described network equipment in the time identifying described terminal according to the CSFB indication information carrying in described access request and be CSFB terminal, according to being described terminal assignments for the resource allocation strategy of described CSFB terminal setting;

Described terminal, on the Radio Resource of described assignment, is carried out signalling with the described network equipment.

In conjunction with second aspect, in the possible implementation of the first, described first network is global system for mobile communications GSM network, and described resource allocation strategy comprises: be described CSFB terminal assignments Traffic Channel TCH, described TCH is for signalling; Or,

In conjunction with the possible implementation of the first of second aspect, in the possible implementation of the second, in the time that described first network is described GSM network, described access request is channel request message; Described Radio Resource comprises: the TCH that described BSC is described terminal assignments according to described resource allocation strategy, the TCH of described assignment is for signalling.

In conjunction with the possible implementation of the second of second aspect, in the third possible implementation, described terminal, on the Radio Resource of described assignment, after carrying out signalling, also comprises with the described network equipment:

Described terminal receives the Channel Mode Modify indication information that described BSC sends, and according to described indication information, the TCH of described assignment is adjusted into speech business transmission mode.

In conjunction with the first, the second or the third possible implementation of second aspect, in the 4th kind of possible implementation, described CSFB indication information comprises CSFB mark and type of call, and described type of call comprises caller or called.

In conjunction with the possible implementation of the first of second aspect, in the 5th kind of possible implementation, in the time that described first network is described UMTS network, described access request is RRC connection request message;

The Radio Resource that described terminal receives described network equipment assignment comprises:

The calling of initiating in described terminal is during in described RRC establishment stage, and described terminal receives RRC that radio network controller (RNC) sends and connects and set up message, obtains described RRC and connects and set up the described specific SRB speed of carrying in message; Wherein, described specific SRB speed is that described RNC is described terminal assignments according to described the first strategy; And/or,

The described calling of initiating in described terminal is during in described RAB establishment stage, and described terminal receives the radio bearer RB that described RNC sends and sets up message, obtains described RB and sets up the asynchronous transfer mode of eating dishes without rice or wine of carrying in message; Wherein, the asynchronous transfer mode of eating dishes without rice or wine described in is that described RNC is described terminal assignments according to described the second strategy.

The third aspect, provides a kind of network equipment, comprising:

Receiver module, the access request sending for receiving terminal, described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that the first network at described network equipment place accesses that described CSFB indication information is used to indicate described terminal;

Resource assignation module, when identifying described terminal and be CSFB terminal for the described CSFB indication information that carries in the described access request receiving according to described receiver module, according to being the resource allocation strategy that described CSFB terminal arranges in advance, it is described terminal assignments Radio Resource;

Signaling processing module, for the described Radio Resource in the assignment of described resource assignation module, carries out signalling with described terminal.

In conjunction with the third aspect, in the possible implementation of the first, described first network is global system for mobile communications GSM network, and described resource allocation strategy comprises: be described CSFB terminal assignments Traffic Channel TCH, described TCH is for signalling; Or,

Described first network is universal mobile telecommunications system UMTS network, described resource allocation strategy comprises: the calling of initiating in described CSFB terminal is in radio resource control RRC establishment stage, for the specific Signaling Radio Bearer SRB of described CSFB terminal assignments speed is carried out signalling, and/or, the described calling of initiating in described CSFB terminal is in RAB RAB establishment stage, for the described CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling.

In conjunction with the possible implementation of the first of the third aspect, in the possible implementation of the second, in the time that described first network is described GSM network, the described network equipment is base station controller BSC, and described access request is channel request message;

Described resource assignation module specifically for, according to described resource allocation strategy, for described terminal assignments TCH, the TCH of described assignment is sent to described terminal and be the base station of described Terminal Service, and indicate the TCH of assignment described in described terminal and described base station for signalling.

In conjunction with the possible implementation of the second of the third aspect, in the third possible implementation, described resource assignation module also for, carry out signalling with described terminal on the Radio Resource of described assignment after, indicate described terminal that the TCH of described assignment is adjusted into speech business transmission mode.

In conjunction with the first, the second or the third possible implementation of the third aspect, in the 4th kind of possible implementation, described CSFB indication information comprises CSFB mark and type of call, and described type of call comprises caller or called.

In conjunction with the possible implementation of the first of the third aspect, in the 5th kind of possible implementation, in the time that described first network is described UMTS network, the described network equipment is radio network controller (RNC), and described access request is RRC connection request message;

Described resource assignation module specifically for, if described resource allocation strategy comprises that the described calling of initiating in described CSFB terminal is in RRC establishment stage, for the specific SRB speed of described CSFB terminal assignments is carried out signalling, the calling of initiating in described terminal is during in described RRC establishment stage, according to described resource allocation strategy, for Radio Resource described in described terminal assignments, for the Radio Resource of described terminal assignments comprises described specific SRB speed; By wireless link request message, described specific SRB speed is sent to the base station into described Terminal Service, connect and set up message described specific SRB is sent to described terminal by RRC; Or

If described resource allocation strategy comprises that the described described calling of initiating in described CSFB terminal is in RAB establishment stage, for the described CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling, the described calling of initiating in described terminal is during in described RAB establishment stage, according to described resource allocation strategy, it is the described terminal assignments asynchronous transfer mode of eating dishes without rice or wine; Setting up message by radio bearer RB indicates described terminal and described base station for the described Terminal Service asynchronous transfer mode of eating dishes without rice or wine described in adopting to carry out signalling.

Fourth aspect, provides a kind of terminal equipment, comprising:

Sending module, send access request for the network equipment to first network, described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that described first network accesses that described CSFB indication information is used to indicate described terminal;

Resource distribution module, for receiving the Radio Resource of described network equipment assignment; Wherein, described Radio Resource is the described network equipment in the time identifying described terminal according to the CSFB indication information carrying in described access request and be CSFB terminal, according to being described terminal assignments for the resource allocation strategy of described CSFB terminal setting;

Signaling processing module, for the Radio Resource in described assignment, carries out signalling with the described network equipment.

In conjunction with fourth aspect, in the possible implementation of the first, described first network is global system for mobile communications GSM network, describedly comprises for described resource allocation strategy in advance: be described CSFB terminal assignments Traffic Channel TCH, described TCH is for signalling; Or,

In conjunction with the possible implementation of the first of fourth aspect, in the possible implementation of the second, in the time that described first network is described GSM network, described access request is channel request message;

Described resource distribution module specifically for, receive described BSC according to the TCH that is described terminal assignments for described resource allocation strategy in advance, the TCH of described assignment is for signalling.

In conjunction with the possible implementation of the second of fourth aspect, in the third possible implementation, described resource distribution module also for, receive the Channel Mode Modify indication information that described BSC sends, and according to described indication information, the TCH of described assignment be adjusted into speech business transmission mode.

In conjunction with the first, the second or the third possible implementation of fourth aspect, in the 4th kind of possible implementation, described CSFB indication information comprises CSFB mark and type of call, and described type of call comprises caller or called.

In conjunction with the possible implementation of the first of fourth aspect, in the 5th kind of possible implementation, in the time that described first network is described UMTS network, described access request is RRC connection request message;

Described resource distribution module specifically for, if described resource allocation strategy comprises that the described calling of initiating in described CSFB terminal is in RRC establishment stage, for the specific SRB speed of described CSFB terminal assignments is carried out signalling, the calling of initiating in described terminal is during in described RRC establishment stage, message is set up in the RRC connection that receives radio network controller (RNC) transmission, obtain described RRC connection and set up the Radio Resource carrying in message, described RRC connection is set up the Radio Resource carrying in message and is comprised described specific SRB speed; Wherein, described specific SRB speed is that described RNC is described terminal assignments according to described resource allocation strategy;

If described resource allocation strategy comprises that the described described calling of initiating in described CSFB terminal is in RAB establishment stage, for the described CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling, the described calling of initiating in described terminal is during in described RAB establishment stage, the radio bearer RB that receives described RNC transmission sets up message, sets up message obtain the asynchronous transfer mode of eating dishes without rice or wine according to described RB; Wherein, the asynchronous transfer mode of eating dishes without rice or wine described in is that described RNC is described terminal assignments according to described resource allocation strategy.

The 5th aspect, provides a kind of network equipment, comprising:

Access unit, the access request sending for receiving terminal, described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that the first network at described network equipment place accesses that described CSFB indication information is used to indicate described terminal;

Processing unit, when identifying described terminal and be CSFB terminal for the described CSFB indication information that carries in the described access request receiving according to described access unit, according to being the resource allocation strategy that described CSFB terminal arranges in advance, it is described terminal assignments Radio Resource; And, on the described Radio Resource of described resource assignation module assignment, carry out signalling with described terminal.

In conjunction with the 5th aspect, in the possible implementation of the first, described first network is global system for mobile communications GSM network, and described resource allocation strategy comprises: be described CSFB terminal assignments Traffic Channel TCH, described TCH is for signalling; Or,

In conjunction with the possible implementation of the first of the 5th aspect, in the possible implementation of the second, in the time that described first network is described GSM network, the described network equipment is base station controller BSC, and described access request is channel request message;

Described processing unit specifically for, according to described resource allocation strategy, for described terminal assignments TCH, the TCH of described assignment is sent to described terminal and be the base station of described Terminal Service, and indicate the TCH of assignment described in described terminal and described base station for signalling.

In conjunction with the possible implementation of the second of the 5th aspect, in the third possible implementation, described processing unit also for, carry out signalling with described terminal on the Radio Resource of described assignment after, indicate described terminal that the TCH of described assignment is adjusted into speech business transmission mode.

In conjunction with the first, the second or the third possible implementation of the 5th aspect, in the 4th kind of possible implementation, described CSFB indication information comprises CSFB mark and type of call, and described type of call comprises caller or called.

In conjunction with the possible implementation of the first of the 5th aspect, in the 5th kind of possible implementation, in the time that described first network is described UMTS network, the described network equipment is radio network controller (RNC), and described access request is RRC connection request message;

Described processing unit specifically for, if described resource allocation strategy comprises that the described calling of initiating in described CSFB terminal is in RRC establishment stage, for the specific SRB speed of described CSFB terminal assignments is carried out signalling, the calling of initiating in described terminal is during in described RRC establishment stage, according to described resource allocation strategy, for Radio Resource described in described terminal assignments, for the Radio Resource of described terminal assignments comprises described specific SRB speed; By wireless link request message, described specific SRB speed is sent to the base station into described Terminal Service, connect and set up message described specific SRB is sent to described terminal by RRC; Or

The 6th aspect, provides a kind of terminal equipment, comprising:

Radio frequency unit, send access request for the network equipment to first network, described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that described first network accesses that described CSFB indication information is used to indicate described terminal;

Baseband processing unit, for receiving the Radio Resource of described network equipment assignment by described radio frequency unit; Wherein, described Radio Resource is the described network equipment in the time identifying described terminal according to the CSFB indication information carrying in described access request and be CSFB terminal, according to being described terminal assignments for the resource allocation strategy of described CSFB terminal setting; And, on the Radio Resource of described assignment, carry out signalling by described radio frequency unit and the described network equipment.

In conjunction with the 6th aspect, in the possible implementation of the first, described first network is global system for mobile communications GSM network, describedly comprises for described resource allocation strategy in advance: be described CSFB terminal assignments Traffic Channel TCH, described TCH is for signalling; Or,

In conjunction with the possible implementation of the first of the 6th aspect, in the possible implementation of the second, in the time that described first network is described GSM network, described access request is channel request message;

Described baseband processing unit specifically for, receive described BSC according to the TCH that is described terminal assignments for described resource allocation strategy in advance by described radio frequency unit, the TCH of described assignment is for signalling.

In conjunction with the possible implementation of the second of the 6th aspect, in the third possible implementation, described baseband processing unit also for, receive by described radio frequency unit the Channel Mode Modify indication information that described BSC sends, and according to described indication information, the TCH of described assignment is adjusted into speech business transmission mode.

In conjunction with the first, the second or the third possible implementation of the 6th aspect, in the 4th kind of possible implementation, described CSFB indication information comprises CSFB mark and type of call, and described type of call comprises caller or called.

In conjunction with the possible implementation of the first of the 6th aspect, in the 5th kind of possible implementation, in the time that described first network is described UMTS network, described access request is RRC connection request message;

Described baseband processing unit specifically for, if described resource allocation strategy comprises that the described calling of initiating in described CSFB terminal is in RRC establishment stage, for the specific SRB speed of described CSFB terminal assignments is carried out signalling, the calling of initiating in described terminal is during in described RRC establishment stage, message is set up in the RRC connection that receives radio network controller (RNC) transmission by described radio frequency unit, obtain described RRC connection and set up the Radio Resource carrying in message, described RRC connection is set up the Radio Resource carrying in message and is comprised described specific SRB speed; Wherein, described specific SRB speed is that described RNC is described terminal assignments according to described resource allocation strategy;

If described resource allocation strategy comprises that the described described calling of initiating in described CSFB terminal is in RAB establishment stage, for the described CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling, the described calling of initiating in described terminal is during in described RAB establishment stage, the radio bearer RB that receives described RNC transmission by described radio frequency unit sets up message, sets up message obtain the asynchronous transfer mode of eating dishes without rice or wine according to described RB; Wherein, the asynchronous transfer mode of eating dishes without rice or wine described in is that described RNC is described terminal assignments according to described resource allocation strategy.

In the above embodiment of the present invention, in advance for CSFB terminal arranges resource allocation strategy, when the network equipment receives after the access request of terminal transmission, if identifying this terminal according to the CSFB indication information carrying in this access request is CSFB terminal, be CSFB terminal assignments Radio Resource according to the resource allocation strategy that is the setting of CSFB terminal, described CSFB terminal is carried out signalling with described terminal on the Radio Resource of assignment, thereby can be CSFB terminal assignments Radio Resource targetedly for CSFB terminal, and then can be by being the high Radio Resource of CSFB terminal assignments efficiency of transmission targetedly, to reduce CSFB time delay.

Brief description of the drawings

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is CSFB scheme schematic diagram of the prior art;

The schematic flow sheet of a kind of CSFB implementation that Fig. 2 A provides for the embodiment of the present invention;

The schematic flow sheet of the another kind of CSFB implementation that Fig. 2 B provides for the embodiment of the present invention;

A kind of CSFB flow process signalling diagram that falls back to GSM network from LTE network that Fig. 3 provides for the embodiment of the present invention;

Fig. 4 a kind ofly falls back to the RRC establishment stage signalling diagram the CSFB flow process of UMTS network from LTE network for what the embodiment of the present invention provided;

Fig. 5 a kind ofly falls back to the RAB establishment stage signalling diagram the CSFB flow process of UMTS network from LTE network for what the embodiment of the present invention provided;

The structural representation of a kind of network equipment that Fig. 6 provides for the embodiment of the present invention;

The structural representation of the another kind of network equipment that Fig. 7 provides for the embodiment of the present invention;

The structural representation of a kind of terminal equipment that Fig. 8 provides for the embodiment of the present invention;

The structural representation of the another kind of terminal equipment that Fig. 9 provides for the embodiment of the present invention.

Embodiment

In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.

The embodiment of the present invention provides in a kind of CSFB implementation, in advance for CSFB terminal arranges resource allocation strategy, the CSFB terminal that falls back to 2G/3G network from LTE network is identified, and in the time identifying CSFB terminal,, set up signaling and connect with command transmitting for CSFB terminal arranges resource allocation strategy according in advance.Wherein, for CSFB terminal arranges resource allocation strategy, for CSFB terminal assignments " superior resources " is carried out signalling, thereby compared with prior art reduce the signalling time delay in CSFB process by advance.So-called " superior resources " are the resource that transmission rate is higher.

Referring to Fig. 2 A, the schematic flow sheet of a kind of CSFB implementation providing for the embodiment of the present invention, this embodiment is realized by network side, specific as follows described in.

Step 201: the access request that the network equipment receiving terminal in first network sends, described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that described first network accesses that described CSFB indication information is used to indicate described terminal;

Step 202: being CSFB terminal if this network equipment identifies described terminal according to described CSFB indication information,, according to being the resource allocation strategy that described CSFB terminal arranges in advance, is described terminal assignments Radio Resource;

Step 203: this network equipment, on the Radio Resource of described assignment, carries out signalling with described terminal.

Particularly, be that under the scene of GSM network, described resource allocation strategy can comprise at described first network: be CSFB terminal assignments TCH(Traffic Channel), described TCH is for signalling; The described network equipment can be BSC(Base Station Controller, base station controller); Described access request can be channel request message.

Above-mentioned steps 202, according to being the resource allocation strategy that described CSFB terminal arranges in advance, for described terminal assignments Radio Resource can comprise:

Be described terminal assignments TCH according to described resource allocation strategy;

The TCH of described assignment is sent to described terminal and be the base station of described Terminal Service, and indicate the TCH of assignment described in described terminal and described base station for signalling.

Further, BSC can also comprise: indicate described terminal that the TCH of described assignment is adjusted into speech business transmission mode carry out signalling with described terminal on the Radio Resource of described assignment after.

Particularly, be that under the scene of UMTS network, described resource allocation strategy can comprise at described first network:

The first strategy: the calling of initiating in CSFB terminal is in radio resource control RRC (Radio Resource Control, Radio Resource control) establishment stage, for the specific Signaling Radio Bearer SRB(Signaling of CSFB terminal assignments Radio Bearers, Signaling Radio Bearer) speed carries out signalling; And/or,

The second strategy: the calling of initiating in CSFB terminal is in RAB RAB(Radio Access Bearer, RAB) establishment stage, for the CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling.The described network equipment is RNC(Radio Network Controller, radio network controller), described access request is RRC connection request message.

In the time that described resource allocation strategy comprises above-mentioned the first strategy, the calling of initiating in described CSFB terminal is in RRC establishment stage, and described RNC, according to described the first strategy, is specific SRB speed described in described terminal assignments; By wireless link request message, described specific SRB speed is sent to the base station into described Terminal Service, connect and set up message described specific SRB is sent to described terminal by RRC; Or,

Comprise above-mentioned second when strategy at described resource allocation strategy, the described calling of initiating in described terminal is during in described RAB establishment stage, and described RNC is according to described the second strategy, is the described terminal assignments asynchronous transfer mode of eating dishes without rice or wine; Setting up message by RB indicates described terminal and described base station for the described Terminal Service asynchronous transfer mode of eating dishes without rice or wine described in adopting to carry out signalling; Or,

In the time that described resource allocation strategy comprises above-mentioned the first strategy and above-mentioned the second strategy, the calling of initiating in described CSFB terminal is in RRC establishment stage, described RNC is according to described the first strategy, for specific SRB speed described in described terminal assignments, by wireless link request message, described specific SRB speed is sent to the base station into described Terminal Service, connect and set up message described specific SRB is sent to described terminal by RRC; The described calling of initiating in described terminal is during in described RAB establishment stage, described RNC is according to described the second strategy, for the described terminal assignments asynchronous transfer mode of eating dishes without rice or wine, and set up message by RB and indicate described terminal and the described base station for the described Terminal Service asynchronous transfer mode of eating dishes without rice or wine described in adopting to carry out signalling.

Can find out by above flow process, in advance for CSFB terminal arranges resource allocation strategy, when the network equipment receives after the access request of terminal transmission, if identifying this terminal according to the CSFB indication information carrying in this access request is CSFB terminal, be CSFB terminal assignments Radio Resource according to the resource allocation strategy that is the setting of CSFB terminal, so that CSFB terminal is carried out signalling with described terminal on the Radio Resource of assignment, thereby can be the high Radio Resource of CSFB terminal assignments efficiency of transmission targetedly for CSFB terminal, and then can reduce CSFB time delay.

As shown in Figure 2 B, the schematic flow sheet of the another kind of CSFB implementation providing for the embodiment of the present invention, this embodiment is realized by terminal, specific as follows described in.

Step 210: terminal sends access request to the network equipment in first network, described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that described first network accesses that described CSFB indication information is used to indicate described terminal;

Step 211: described terminal receives the Radio Resource of described network equipment assignment; Wherein, described Radio Resource is the described network equipment in the time identifying described terminal according to the CSFB indication information carrying in described access request and be CSFB terminal, according to being described terminal assignments for the resource allocation strategy of described CSFB terminal setting;

Step 212: described terminal, on the Radio Resource of described assignment, is carried out signalling with the described network equipment.

Particularly, be under the scene of GSM network at described first network, described resource allocation strategy is consistent with the associated description in Fig. 2 A illustrated embodiment; Described access request is channel request message; The described network equipment is BSC.

Described terminal receives described BSC according to the TCH that is described terminal assignments for the resource allocation strategy of described CSFB terminal setting in advance, and the TCH of described assignment is for signalling.Described terminal is on the Radio Resource of described assignment, carry out signalling with the described network equipment, further, after carrying out signalling with the described network equipment, described terminal receives the Channel Mode Modify indication information that described BSC sends, and according to described indication information, the TCH of described assignment is adjusted into speech business transmission mode.

Particularly, be under the scene of UMTS network at described first network, described resource allocation strategy can comprise the strategy of first in Fig. 2 A illustrated embodiment and the/the second strategy; The described network equipment is RNC, and described access request is RRC connection request message.

Be that under the scene of UMTS network, step 211 can comprise at described first network:

The calling of initiating in described terminal is during in described RRC establishment stage, described terminal receives the RRC connection of RNC transmission and sets up message, obtain described RRC connection and set up the specific SRB speed of carrying in message, wherein, described specific SRB speed is that described RNC is described terminal assignments according to described the first strategy; And/or,

Below respectively to fall back to 2G network from LTE network, and to fall back to 3 networks from LTE network be example, and the embodiment of the present invention is described in detail.

Initiate after voice call request to reside in terminal in LTE network, falling back to GSM network from LTE network, to carry out voice call service be example, and the specific implementation process of the embodiment of the present invention is described in detail.

GSM network is mainly by MS(Mobile Station, travelling carriage), base station sub-system (Base Station Subsystem, BSS) and switching network subsystem composition (Net Switch Subsystem, NSS).MS is the equipment that in GSM mobile radio communication, user uses.BTS(Base Transceiver Station, base transceiver station) and BSC formed base station sub-system.Base station sub-system is directly joined with MS by wave point, is responsible for wireless transmission reception and RRM.MSC(Mobile Switching Center in base station sub-system and switching network subsystem, mobile services switching centre) be connected, realize the communication connection between user, transfer system signal and user profile etc.

In the embodiment of the present invention, the current terminal that resides in LTE network is initiated after audio call, eNB(evolved NodeB in LTE network, enode b, be base station) be the Target cell in this UE selection GSM network, and indicate this terminal to fall back to GSM network and carry out voice call service, this terminal is initiated voice caller CSFB flow process according to this instruction to the BTS of this Target cell.

Conventionally, in caller CSFB flow process, at access phase, terminal is at SDCCH(Stand-Alone Dedicated Control Channel, Separate Dedicated Control Channel) on carry out Signalling exchange, after Signalling exchange completes, in TCH(Traffic Channel) the assignment stage is that terminal assignments TCH is with transmitting voice service.

In the embodiment of the present invention, in advance for CSFB terminal arranges following resource allocation strategy: for CSFB terminal assignments, TCH carries out signalling.In access phase, in the channel request (Channel Request) that terminal sends, carry CSFB indication information, being used to indicate this terminal is CSFB terminal, BSC receives after the channel request of this terminal transmission, be CSFB terminal if identify this terminal, carry out command transmitting according to above-mentioned resource allocation strategy for this terminal assignments TCH channel, terminal completes Signalling exchange flow process on the TCH channel of specifying.Further, signaling complete mutual after, BSC is by initiating TCH schema modification flow process, giving the TCH channel adjustment for command transmitting of this terminal by assignment is transmitting voice service, enters the speech stage, carries out normal voice dialogue.

Reside in the channel request (Channel Request) of terminal initiation of GSM network, owing to wherein not carrying CSFB indication information, therefore still continuing to use existing mode accesses, such as, carry out command transmitting at access phase for this terminal assignments SDCCH channel, in the TCH assignment stage, for this terminal assignments TCH channel is with transmitting voice service.

The every 235ms of SDCCH channel can only transmit 23 bytes, and TCH channel transmission rate theory is 2 times of SDCCH channel.Therefore, replace SDCCH channel to carry out command transmitting with TCH channel, can improve signalling efficiency, compared with prior art reduce CSFB time delay.

Fig. 3 shows the signalling interactive process of above-mentioned flow process.As shown in the figure, initiate after audio call when the terminal that resides in LTE network, eNB indicates this terminal to fall back to GSM network to carry out speech business, and terminal is carried out CSFB according to this instruction and fallen after rise, and the Signalling exchange flow process that CSFB falls process after rise can comprise:

Step 301:MS (Random Access Channel, Random Access Channel) on RACH is upper sends Channel Request(channel request to BTS) message.In this request message, carry CSFB indication information, in order to show that this MS is CSFB terminal,, falls back to the terminal of GSM network that is from LTE network.

The embodiment of the present invention can, by Channel Request message is expanded, make it carry CSFB indication information, in CSFB indication information, can comprise CSFB sign, also can comprise type of call (being that CSFB terminal is calling subscriber or called subscriber).Concrete, for the terminal (comprising caller and called) that falls back to GSM network from LTE network, by not yet using bit value to define in the access reason in Channel Request message, such as, use access reason in still untapped bit value 1111 as CSFB sign, to identify CSFB terminal.Certainly, MS also can be carried on Channel Request message by CSFB indication information by alternate manner, such as newly increasing information unit with carrying CSFB indication information in Channel Request message, will not enumerate at this.

Step 302:BTS sends Channel Required(channel request according to the Channel Request message of receiving to BSC) message, wherein carry CSFB indication information;

Step 303:BSC receives after Channel Required message, and identifying this MS according to the CSFB indication information carrying in this message is CSFB terminal, according to being this MS assignment Radio Resource for the resource allocation strategy of CSFB terminal setting.BSC sends Channel Activation(channel to BTS and activates) message, to indicate assigned Radio Resource.

In this step, the Radio Resource of BSC assignment comprises TCH channel, and this TCH channel will be used at call establishment command transmitting, and BSC sends to BTS by Channel Activation message by the TCH of assignment.

Step 304:BTS receives after Channel Activation message, on indicated TCH channel, drives power amplifier, starts reception information on up direction.BTS sends Channel Activation Acknowledge(channel activation confirmation to BSC) message;

Step 305:BSC sends the direct Assignment Command of Immediate Assignment Command(by BTS to MS) message, the AGCH(Access Grant Channel of this message in Um Interface, allow access channel) upper transmission, for indicate assigned TCH channel to MS;

Step 306:MS is being on the TCH of its assignment, carries out signalling with BTS and BSC.During the signalling flow process of carrying out can comprise the following steps partly or entirely:

MS sends out SABM(Set Asynchronous Balanced Mode on TCH channel, and Asynchronous Balanced Mode is set) frame access, BTS confirms at TCH channel UA last time frame;

BTS sends out Establishment Indication(to BSC and sets up instruction) message, in this message, comprise CM Service Request(CM service request; CM:Connection Management, meaning is connection management) message content; BSC sets up the SCCP(Skinny Call Control Protocol of A interface (being the interface between BSC and MSC), Internal call control protocol) link, send CM Service Request message to MSC; MSC is to BSC back link acknowledge message; MSC sends CM Service Accepted(CM business to MS and accepts) message, in Um Interface (being the interface between BTS and MS), this message sends on TCH channel;

MS carries out following part or all of process according to actual conditions: LAU(Location Area Update, location area updating), RAU(Routing Area Update, Routing Area Update), GPRS hangs up (GPRS SUSPEND; GPRS:General Packet Radio Service, meaning is GPRS), class mark obtains, authentication, encryption, identification, TMSI(Temporary Mobile Subscriber Identity, interim identification code) the heavy flow process such as distribution, signaling mutual in these flow processs is in TCH channel.

Step 307:MS sends Setup(call setup on TCH channel) message;

Step 308:MSC sends Call Proceeding(call flow to MS) message, in Um Interface, this message sends on TCH channel;

Step 309:MSC sends Alerting message to MS, and caller MS hears ring-back tone, this message in Um Interface at FACCH(Fast Associated Control Channel, Fast Associated Control Channel) send on channel;

Step 310:MSC sends out Assignment Request(assignment request to BSC) message, to ask assignment TCH channel;

Step 311:BSC receives after Assignment Request message, and owing to being this MS assignment TCH, therefore indicating BTS is transmitting voice service by TCH channel adjustment.

In this step, BSC can send Mode Modify(schema modification to BTS) message, to indicate TCH channel adjustment as transmitting voice service, this message sends on TCH;

Step 312:BTS, according to after the pattern of the instruction amendment TCH channel of BSC, returns to Mode Modify Acknowledge(schema modification to BSC and confirms) message, this message sends on TCH;

Step 313:BSC instruct MS is transmitting voice service by TCH channel adjustment.In this step, MSC can send Channel Mode Modify(Channel Mode Modify to MS) message, to indicate TCH channel adjustment as transmitting voice service;

Step 314:MS is according to the pattern of Channel Mode Modify message modification TCH channel, and access voice channel, returns to Channel Mode Modify ACK(Channel Mode Modify Acknowledge to MSC) message;

Step 315:BSC sends Assignment Complete(assignment to MSC and completes) message, and think that this calling enters talking state;

Step 316:MSC sends out Connect(to MS and connects) message, on the FACCH channel of this message in Um Interface, send;

Step 317:MS returns to Connect Acknowledge(to MSC and connects confirmation on FACCH channel) message;

Step 318: caller MS and called MS enter voice call state.

Can find out by above flow process, by CSFB being fallen back to the calling subscriber of 2G network, in the time that 2G network initially accesses, it is identified, reach the object that identifies CSFB terminal, and substitute SDCCH channel to carry out signalling by the high TCH channel of assignment efficiency of transmission in call flow, thereby accelerate the transmission of space interface signaling, reduce interaction time delay.

The situation that falls back to 2G network for called subscriber from LTE network, the process that its processing mode and above-mentioned calling subscriber are fallen back to 2G network from LTE network is similar, is not described in detail in this.

Can find out by above flow process, falling back under the scene of GSM network, in advance for CSFB terminal arranges resource allocation strategy, when the network equipment receives after the access request of terminal transmission, if identifying this terminal according to the CSFB indication information carrying in this access request is CSFB terminal, according to for the resource allocation strategy of CSFB terminal setting be CSFB terminal assignments TCH with command transmitting, thereby with in prior art, be terminal assignments SDCCH with compared with command transmitting, can reduce CSFB time delay.

Initiate after voice call request to reside in terminal in LTE network, falling back to UMTS network from LTE network, to carry out voice call service be example, and the specific implementation process of the embodiment of the present invention is described in detail.

UMTS network is made up of core net (Core Network, CN) and RNS (Radio Network Subsystem, RNS).RNS is included in the RNC that controls radio resource in Access Network.Each RNC can cover multiple NodeB.NodeB is in fact a kind of logic entity being equal to base transceiver station, and it is controlled by RNC, provides the physical radio link between mobile device (UE) and RNS (RNS) to connect.

The call establishment that in UMTS network, UE initiates comprises two stages: being first RRC establishment stage, is then RAB establishment stage.The RRC that UE sets up by RRC establishment stage with network is connected and carries out Signalling exchange, RAB transmitting audio data, the multimedia service data etc. between UE and core net, set up by RAB establishment stage.

In the embodiment of the present invention, in advance for CSFB terminal arranges following resource allocation strategy: be that the specific SRB speed of CSFB terminal assignments is carried out signalling at RRC establishment stage, and/or, be that the CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling at RAB establishment stage.At RRC establishment stage, the RRC Connect Request(RRC connection request that RNC sends according to UE) message identifies CSFB terminal, accelerates space interface signaling transmission for CSFB terminal by higher SRB speed, reduces Signalling exchange time delay.At RAB establishment stage, for CSFB terminal, adopt the asynchronous transfer mode of eating dishes without rice or wine to carry out Signalling exchange, set up to accelerate RAB, reduce Signalling exchange time delay.The measure of the minimizing Signalling exchange time delay that above-mentioned RRC establishment stage adopts, and the measure of the minimizing Signalling exchange time delay that adopts of RAB establishment stage, can use respectively, also can be combined with,, the flow process that only adopts the embodiment of the present invention to provide at RRC establishment stage, RAB establishment stage still adopts existing procedure; Or RRC establishment stage adopts existing procedure, the flow process that RAB establishment stage adopts the embodiment of the present invention to provide; Or, in RRC establishment stage and RAB establishment stage, the flow process that all adopts the embodiment of the present invention to provide.

Referring to Fig. 4, for the signaling process schematic diagram of the RRC establishment stage of the embodiment of the present invention, initiate after audio call when residing in the terminal of LTE network, this terminal of indicating eNB in LTE network falls back to UNTS network to carry out speech business, terminal is carried out CSFB according to this instruction and is fallen after rise, and the RRC Establishing process in CSFB falling process can comprise:

Step 401:UE is by up CCCH(Common Control Channel, Common Control Channel) transmission RRC Connection Request(RRC connection request) message, request is set up RRC and is connected; Because this UE is the UE that falls back to UMTS network and carry out voice call service from LTE network, therefore UE has carried CSFB indication information in RRC Connection Request message;

It is CSFB terminal that step 402:RNC identifies this UE according to RRC Connection Request message, therefore be this UE assignment Radio Resource according to the resource allocation strategy arranging for CSFB terminal in advance, send NBAP(NodeB Application Part, base station application part to NodeB) the Radio Link Setup Request(wireless link request of agreement) message.

In this step, RRC can be included as this UE to distribute RNTI(Radio Network Temporary Identity in the Radio Resource of this UE assignment, Radio Network Temporary Identifier), SRB speed, L1 resource, L2 resource etc., wherein, for the SRB speed of this UE assignment is the RRC Connection Request message that 27.2kbps(initiates for the UE that resides in UMTS network, owing to wherein not carrying CSFB indication information, therefore for the SRB speed of this UE assignment is 13.6kbps).

After step 403:NodeB resource is prepared successfully, reply the response of Radio Link Setup Response(wireless link to RNC) message.

Step 404:RNC uses ALCAP(Access Link Control Application Part, Access Link Control Application Protocol) agreement sets up Iub interface (being the interface between NodeB and RNC) user's face transmission bearer.

Between step 405～406:RNC and NodeB, carry out synchronization process.

Step 407:RNC by descending CCCH channel to UE send RRC Connection Setup(RRC connect set up) message, in message, comprise the Radio Resource of RNC assignment, wherein indicate the SRB that uses 27.2kbps.

Step 408:NodeB sends the instruction of Radio Link Restore Indication(wireless link recovery to RNC) message.

After step 409:UE confirms that RRC connection is successfully established, in the up DCCH(Dedicated Control Channel setting up, Dedicated Control Channel) connect and set up to RNC transmission RRC Connection Setup Complete(RRC) message.RRC connects process of establishing to be finished.

Can find out by above-mentioned flow process, RNC identifies from LTE network falls back to the CSFB terminal of UMTS network, in the time being its assignment Radio Resource, for the SRB speed of this user's assignment is 27.2kbps; And in prior art, for the user and the CSFB terminal that originally resided in UMTS network, the SRB speed of assignment is 13.6kbps conventionally.As can be seen here, compared with prior art, the embodiment of the present invention provides and has reduced Signalling exchange time delay for the CSFB falling process of CSFB terminal.

Referring to Fig. 5, be the signaling process schematic diagram of the RAB establishment stage of the embodiment of the present invention, when completing RRC, UE connects after process of establishing, carry out following RAB Establishing process:

Step 501:CN sends RANAP(Radio Access Network Application Part, Radio Access Network Application Part to RNC) the RAB Assignment Request(RAB assignment request of agreement) message, initiate RAB process of establishing;

Step 502～503:RNC receives after RAB Assignment Request message, by the QoS(Quality of Service of RAB, service quality) Parameter Mapping is AAL2 link characteristic parameters and Radio Resource characterisitic parameter, the ALCAP of Iu interface initiates user's face transmission bearer process of establishing (not existing for this step of PS territory) of Iu interface according to AAL2 link characteristic parameters wherein;

The Radio Link Reconfiguration Prepare(radio link reconfiguration that step 504:RNC sends NBAP agreement to controlled NodeB is prepared) message, request NodeB sets up new dedicated transmission channel (DCH) on existing wireless link.

Step 505:NodeB receives after Radio Link Reconfiguration Prepare message, the corresponding resource of assignment, sending Radio Link Reconfiguration Ready(radio link reconfiguration to described RNC is ready to complete) message, notice RNC radio link reconfiguration completes;

In step 506～509:RCN, the ALCAP agreement of Iub interface is initiated user's face transmission bearer process of establishing of Iub interface, and NodeB is set up and synchronizeed by the synchronization frame of exchange DCH Frame Protocol with RNC.

The Radio Bearer Setup(radio bearer that step 510:RNC sends RRC agreement to UE is set up) message.

In this step, if it is CSFB terminal (such as the RRC Connection Request message that can receive according to RRC establishment stage is identified) that RNC identifies this UE, RNC adopts the asynchronous transfer mode of eating dishes without rice or wine to carry out Signalling exchange by Radio Bearer Setup message instruction UE and other network equipment (comprising the NodeB for this UE service).

The Radio Link Reconfiguration Commit(radio link reconfiguration that step 511:RNC sends NBAP agreement to NodeB is submitted to) message.

Step 512:UE sends RB Setup Complete(RB to RNC and has set up) message.

In the step 510 of above-mentioned flow process, adopt the asynchronous transfer mode of eating dishes without rice or wine to carry out when mutual, after the network equipment and UE receive the configuration messages of RNC, enabling immediately new configuration.And in air interface synchronization pattern, after the network equipment and UE receive the configuration messages of RNC, need to enable again new configuration by the synchronization point in message.As can be seen here, the Signalling exchange time delay while adopting the Signalling exchange time delay ratio employing air interface synchronization pattern while eating dishes without rice or wine asynchronous transfer mode is low.

Certainly, in this embodiment, no matter in RRC process of establishing or RAB process of establishing, for CSFB terminal, RNC also can assignment " superior resources ", that is, carry out the higher resource of UE assignment efficiency of transmission of speech business carry out signalling for falling back to UMTS network.

Can find out by above flow process, falling back under the scene of UMTS network, in advance for CSFB terminal arranges following resource allocation strategy: be that the specific SRB speed of CSFB terminal assignments is carried out signalling at RRC establishment stage, and/or, be that the CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling at RAB establishment stage.At RRC establishment stage, the RRC Connect Request message that RNC sends according to UE identifies CSFB terminal, accelerates space interface signaling transmission for CSFB terminal by higher SRB speed, reduces Signalling exchange time delay.At RAB establishment stage, for CSFB terminal, adopt the asynchronous transfer mode of eating dishes without rice or wine to carry out Signalling exchange, set up to accelerate RAB, reduce Signalling exchange time delay.

Based on identical technical conceive, the embodiment of the present invention also provides a kind of network equipment and terminal equipment.

Referring to Fig. 6, the structural representation of the network equipment providing for the embodiment of the present invention, this network equipment can be applicable to previous embodiment, in 2G network, can be used as BTS, can be used as RNC in 3G.As shown in the figure, this network equipment 60 can comprise: receiver module 61, resource assignation module 62, signaling processing module 63, wherein:

Receiver module 61, the access request sending for receiving terminal, described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that the first network at described network equipment place accesses that described CSFB indication information is used to indicate described terminal;

Resource assignation module 62, when identifying described terminal and be CSFB terminal for the described CSFB indication information that carries in the described access request receiving according to described receiver module 61, according to being the resource allocation strategy that described CSFB terminal arranges in advance, it is described terminal assignments Radio Resource;

Signaling processing module 63, for the described Radio Resource in described resource assignation module 62 assignments, carries out signalling with described terminal.

Implement under scene in one, described first network is GSM network, and described resource allocation strategy comprises: be described CSFB terminal assignments TCH, described TCH is for signalling; Or,

Further, in the time that described first network is described GSM network, the described network equipment is BSC, and described access request is channel request message.Resource assignation module 62 specifically for, according to described resource allocation strategy, for described terminal assignments TCH, the TCH of described assignment is sent to described terminal and be the base station of described Terminal Service, and indicate the TCH of assignment described in described terminal and described base station for signalling.

Further, resource assignation module 62 also for: carry out signalling with described terminal on the Radio Resource of described assignment after, indicate described terminal that the TCH of described assignment is adjusted into speech business transmission mode.

Concrete, described CSFB indication information can comprise CSFB mark and type of call, and described type of call can comprise caller or called.

Implement under scene at another kind, described first network is described UMTS network, and the described network equipment is RNC, and described access request is RRC connection request message.Accordingly, resource assignation module 62 specifically for, if described resource allocation strategy comprises that the described calling of initiating in described CSFB terminal is in RRC establishment stage, for the specific SRB speed of described CSFB terminal assignments is carried out signalling, the calling of initiating in described terminal is during in described RRC establishment stage, according to described resource allocation strategy, be Radio Resource described in described terminal assignments, for the Radio Resource of described terminal assignments comprises described specific SRB speed; By wireless link request message, described specific SRB speed is sent to the base station into described Terminal Service, connect and set up message described specific SRB is sent to described terminal by RRC; Or

Above Fig. 6 shows the logical construction of the network equipment, and the hardware configuration of this network equipment can as shown in Figure 7, can comprise: access unit 71 and processing unit 73, further also can comprise crosspoint 72.Wherein, access unit 71 can provide with the interface of equipment of the core network, with base station (such as, for GSM network, base station herein refers to BTS, for UMTS network, base station herein refers to NodeB) interface etc., this access unit 71 can be realized by a series of veneers.Crosspoint 72 provides large capacity, choke free function of exchange for Business Stream connection between system control and management, Business Processing communication between plates and multiple access unit 81 etc., and access unit 71 also can be realized by a series of veneers.Processing unit 73 is realized chain of command and the processing of user's face upper-layer protocol, can be realized by a series of veneers.The embodiment of the present invention in advance for CSFB terminal arranges resource allocation strategy, and is improved the chain of command protocol software in processing unit 73 in processing unit 73, to realize resource assignation module 61 in Fig. 6 and the function of signaling processing module 63.

As shown in Figure 7, in this network equipment 70:

Access unit 71, the access request sending for receiving terminal, described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that the first network at described network equipment place accesses that described CSFB indication information is used to indicate described terminal;

Processing unit 73, when identifying described terminal and be CSFB terminal for the described CSFB indication information that carries in the described access request receiving according to described access unit, according to being the resource allocation strategy that described CSFB terminal arranges in advance, it is described terminal assignments Radio Resource; And, on the described Radio Resource of described resource assignation module assignment, carry out signalling with described terminal.

Concrete, described first network is GSM network, described resource allocation strategy comprises: be described CSFB terminal assignments TCH, described TCH is for signalling; Or, described first network is UMTS network, described resource allocation strategy comprises: the calling of initiating in described CSFB terminal is in radio resource control RRC establishment stage, for the specific Signaling Radio Bearer SRB of described CSFB terminal assignments speed is carried out signalling, and/or, the described calling of initiating in described CSFB terminal is in RAB establishment stage, for the described CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling.

Concrete, in the time that described first network is described GSM network, the described network equipment is base station controller BSC, described access request is channel request message; Processing unit 73 specifically for, according to described resource allocation strategy, for described terminal assignments TCH, the TCH of described assignment is sent to described terminal and be the base station of described Terminal Service, and indicate the TCH of assignment described in described terminal and described base station for signalling.

Further, processing unit 73 also for, carry out signalling with described terminal on the Radio Resource of described assignment after, indicate described terminal that the TCH of described assignment is adjusted into speech business transmission mode.

Concrete, described CSFB indication information comprises CSFB mark and type of call, and described type of call comprises caller or called.

In the time that described first network is described UMTS network, the described network equipment is radio network controller (RNC), and described access request is RRC connection request message; Processing unit 73 specifically for, if described resource allocation strategy comprises that the described calling of initiating in described CSFB terminal is in RRC establishment stage, for the specific SRB speed of described CSFB terminal assignments is carried out signalling, the calling of initiating in described terminal is during in described RRC establishment stage, according to described resource allocation strategy, for Radio Resource described in described terminal assignments, for the Radio Resource of described terminal assignments comprises described specific SRB speed; By wireless link request message, described specific SRB speed is sent to the base station into described Terminal Service, connect and set up message described specific SRB is sent to described terminal by RRC; Or, if described resource allocation strategy comprises that the described described calling of initiating in described CSFB terminal is in RAB establishment stage, for the described CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling, the described calling of initiating in described terminal is during in described RAB establishment stage, according to described resource allocation strategy, it is the described terminal assignments asynchronous transfer mode of eating dishes without rice or wine; Setting up message by radio bearer RB indicates described terminal and described base station for the described Terminal Service asynchronous transfer mode of eating dishes without rice or wine described in adopting to carry out signalling.

Referring to Fig. 8, the structural representation of the terminal equipment providing for the embodiment of the present invention, this terminal equipment can be applicable to previous embodiment.As shown in the figure, this terminal equipment 80 can comprise: sending module 81, resource distribution module 82, signaling processing module 83, wherein:

Sending module 81, send access request for the network equipment to first network, described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that described first network accesses that described CSFB indication information is used to indicate described terminal;

Resource distribution module 82, for receiving the Radio Resource of described network equipment assignment, further can also carry out resource distribution according to the Radio Resource of assignment; Wherein, described Radio Resource is the described network equipment in the time identifying described terminal according to the CSFB indication information carrying in described access request and be CSFB terminal, according to being described terminal assignments for the resource allocation strategy of described CSFB terminal setting;

Signaling processing module 83, for the Radio Resource in described assignment, carries out signalling with the described network equipment.

Concrete, described first network is GSM network, describedly comprises for described resource allocation strategy in advance: be described CSFB terminal assignments Traffic Channel TCH, described TCH is used for signalling; Or, described first network is UMTS network, described resource allocation strategy comprises: the calling of initiating in described CSFB terminal is in RRC establishment stage, for the specific Signaling Radio Bearer SRB of described CSFB terminal assignments speed is carried out signalling, and/or, the described calling of initiating in described CSFB terminal is in RAB establishment stage, for the described CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling.

Concrete, in the time that described first network is described GSM network, described access request is channel request message; Resource distribution module 82 specifically for, receive described BSC according to the TCH that is described terminal assignments for described resource allocation strategy in advance, the TCH of described assignment is for signalling.

Further, resource distribution module 82 also for, receive the Channel Mode Modify indication information that described BSC sends, and according to described indication information, the TCH of described assignment be adjusted into speech business transmission mode.

In the time that described first network is described UMTS network, described access request is RRC connection request message; Resource distribution module 82 specifically for, if described resource allocation strategy comprises that the described calling of initiating in described CSFB terminal is in RRC establishment stage, for the specific SRB speed of described CSFB terminal assignments is carried out signalling, the calling of initiating in described terminal is during in described RRC establishment stage, message is set up in the RRC connection that receives radio network controller (RNC) transmission, obtain described RRC connection and set up the Radio Resource carrying in message, described RRC connection is set up the Radio Resource carrying in message and is comprised described specific SRB speed; Wherein, described specific SRB speed is that described RNC is described terminal assignments according to described resource allocation strategy;

Above Fig. 8 shows the logical construction of terminal equipment, and the hardware configuration of this terminal equipment can as shown in Figure 9, can comprise: radio-frequency module 91, baseband processing module 92, and memory 93.Wherein, radio-frequency module 91 can be realized by radio circuit or radio frequency chip, for time-domain signal being converted to frequency-region signal and going out by antenna transmission; Baseband processing module 92, for communicating protocol processes, can be realized by a series of chips including CPU.The embodiment of the present invention is improved the protocol processing software of letter all in baseband processing module 92, to realize resource distribution module 82 in Fig. 8 and the function of signaling processing module 83.

As shown in Figure 9, in this terminal equipment 90:

In memory 93, store the resource allocation strategy that promising CSFB terminal arranges;

Radio frequency unit 91, send access request for the network equipment to first network, described access request carries CSFB indication information, and it is to fall back to from resident second network the CSFB terminal that described first network accesses that described CSFB indication information is used to indicate described terminal;

Baseband processing unit 92, for receive the Radio Resource of described network equipment assignment by described radio frequency unit, and can further carry out resource distribution according to the Radio Resource of assignment; Wherein, described Radio Resource is the described network equipment in the time identifying described terminal according to the CSFB indication information carrying in described access request and be CSFB terminal, according to being described terminal assignments for the resource allocation strategy of described CSFB terminal setting; And, on the Radio Resource of described assignment, carry out signalling by described radio frequency unit and the described network equipment.

Described first network is GSM network, describedly comprises for described resource allocation strategy in advance: be described CSFB terminal assignments Traffic Channel TCH, described TCH is for signalling; Or, described first network is UMTS network, described resource allocation strategy comprises: the calling of initiating in described CSFB terminal is in RRC establishment stage, for the specific Signaling Radio Bearer SRB of described CSFB terminal assignments speed is carried out signalling, and/or, the described calling of initiating in described CSFB terminal is in RAB establishment stage, for the described CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling.

In the time that described first network is described GSM network, described access request is channel request message; Baseband processing unit 92 specifically for, receive described BSC according to the TCH that is described terminal assignments for described resource allocation strategy in advance by described radio frequency unit, the TCH of described assignment is for signalling.

Further, baseband processing unit 92 also for, receive by described radio frequency unit the Channel Mode Modify indication information that described BSC sends, and according to described indication information, the TCH of described assignment be adjusted into speech business transmission mode.

In the time that described first network is described UMTS network, described access request is RRC connection request message; Baseband processing unit 92 specifically for, if described resource allocation strategy comprises that the described calling of initiating in described CSFB terminal is in RRC establishment stage, for the specific SRB speed of described CSFB terminal assignments is carried out signalling, the calling of initiating in described terminal is during in described RRC establishment stage, message is set up in the RRC connection that receives radio network controller (RNC) transmission by described radio frequency unit, obtain described RRC connection and set up the Radio Resource carrying in message, described RRC connection is set up the Radio Resource carrying in message and is comprised described specific SRB speed; Wherein, described specific SRB speed is that described RNC is described terminal assignments according to described resource allocation strategy; If described resource allocation strategy comprises that the described described calling of initiating in described CSFB terminal is in RAB establishment stage, for the described CSFB terminal assignments asynchronous transfer mode of eating dishes without rice or wine is carried out signalling, the described calling of initiating in described terminal is during in described RAB establishment stage, the radio bearer RB that receives described RNC transmission by described radio frequency unit sets up message, sets up message obtain the asynchronous transfer mode of eating dishes without rice or wine according to described RB; Wherein, the asynchronous transfer mode of eating dishes without rice or wine described in is that described RNC is described terminal assignments according to described resource allocation strategy.

The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by 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 the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.

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

Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the embodiment of the present invention the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims

1. a circuit domain dropping CSFB implementation method, is characterized in that, described method comprises:

2. the method for claim 1, is characterized in that, described first network is global system for mobile communications GSM network, and described resource allocation strategy comprises: be described CSFB terminal assignments Traffic Channel TCH, described TCH is for signalling; Or,

3. method as claimed in claim 2, is characterized in that, in the time that described first network is described GSM network, described access request is channel request message;

4. method as claimed in claim 3, is characterized in that, the described network equipment, on the Radio Resource of described assignment, after carrying out signalling, also comprises with described terminal:

5. the method as described in claim 2-4 any one, is characterized in that, described CSFB indication information comprises CSFB mark and type of call, and described type of call comprises caller or called.

6. method as claimed in claim 2, is characterized in that, in the time that described first network is described UMTS network, described access request is RRC connection request message;

7. a circuit domain dropping CSFB implementation method, is characterized in that, described method comprises:

8. method as claimed in claim 7, is characterized in that, described first network is global system for mobile communications GSM network, and described resource allocation strategy comprises: be described CSFB terminal assignments Traffic Channel TCH, described TCH is for signalling; Or,

9. method as claimed in claim 8, is characterized in that, in the time that described first network is described GSM network, described access request is channel request message; Described Radio Resource comprises: the TCH that described BSC is described terminal assignments according to described resource allocation strategy, the TCH of described assignment is for signalling.

10. method as claimed in claim 9, is characterized in that, described terminal, on the Radio Resource of described assignment, after carrying out signalling, also comprises with the described network equipment:

11. methods as described in claim 8-10 any one, is characterized in that, described CSFB indication information comprises CSFB mark and type of call, and described type of call comprises caller or called.

12. methods as claimed in claim 8, is characterized in that, in the time that described first network is described UMTS network, described access request is RRC connection request message;

13. 1 kinds of network equipments, is characterized in that, comprising:

14. network equipments as claimed in claim 13, is characterized in that, described first network is global system for mobile communications GSM network, and described resource allocation strategy comprises: be described CSFB terminal assignments Traffic Channel TCH, described TCH is for signalling; Or,

15. network equipments as claimed in claim 14, is characterized in that, in the time that described first network is described GSM network, the described network equipment is base station controller BSC, and described access request is channel request message;

16. network equipments as claimed in claim 15, it is characterized in that, described resource assignation module also for, carry out signalling with described terminal on the Radio Resource of described assignment after, indicate described terminal that the TCH of described assignment is adjusted into speech business transmission mode.

17. network equipments as described in claim 14-16 any one, is characterized in that, described CSFB indication information comprises CSFB mark and type of call, and described type of call comprises caller or called.

18. network equipments as claimed in claim 14, is characterized in that, in the time that described first network is described UMTS network, the described network equipment is radio network controller (RNC), and described access request is RRC connection request message;

19. 1 kinds of terminal equipments, is characterized in that, comprising:

20. terminal equipments as claimed in claim 19, it is characterized in that, described first network is global system for mobile communications GSM network, describedly comprises for described resource allocation strategy in advance: be described CSFB terminal assignments Traffic Channel TCH, described TCH is for signalling; Or,

21. terminal equipments as claimed in claim 20, is characterized in that, in the time that described first network is described GSM network, described access request is channel request message;

22. terminal equipments as claimed in claim 21, is characterized in that, described resource distribution module also for, receive the Channel Mode Modify indication information that described BSC sends, and according to described indication information, the TCH of described assignment be adjusted into speech business transmission mode.

23. terminal equipments as described in claim 20-22 any one, is characterized in that, described CSFB indication information comprises CSFB mark and type of call, and described type of call comprises caller or called.

24. terminal equipments as claimed in claim 20, is characterized in that, in the time that described first network is described UMTS network, described access request is RRC connection request message;