CN103313426A - Signaling connection establishment cause indication and identification methods and devices - Google Patents
Signaling connection establishment cause indication and identification methods and devices Download PDFInfo
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Abstract
The invention relates to a signaling connection establishment cause indication method, a signaling connection establishment cause identification method, a signaling connection establishment cause indication device and a signaling connection establishment cause identification device. The methods comprise the following steps that user equipment (UE) resides in a second network system after receiving an RRC (radio resource control) message in a first network system, sets values of a first variable and a second variable in pre-reorientation information carried by an RRC connection establishment request message, and transmits the request message to an access network control node in the second network system; the access network control node in the second network system acquires the values of the first and second variables in the pre-reorientation information carried by the request message after receiving the RRC connection establishment request message; and whether an establishment cause for RRC connection is a CSFB (circuit switched fall back) call or not is identified according to the two values. Therefore the CSFB call can be accurately identified through the access network control node in the second network system, and admission control in an RRC connection establishment stage is realized.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of signaling and connect indication and recognition methods and the device of setting up reason.
Background technology
LTE (Long Term Evolution, Long Term Evolution) network, namely the E-UTRA network is not supported CS (Circuit Switched, circuit switching) territory, does not therefore support based on the voice class in CS territory professional yet.The E-UTRA network can return back to the 2G/3G network, uses the CS territory of 2G/3G system to provide voice class professional as UE (User Equipment, subscriber equipment) side.UE can realize with the method that is redirected from E-UTRA network C SFB (CS Fall Back, circuit domain dropping) to UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system) network.
Under prior art, when E-UTRA is redirected to 2G or 3G network with UE, UE is in initiating business request stage notice core net, this is that a CSFB calls out, after business was finished, MSC (Mobile Switching Centre, mobile switching centre) was in the Iu release command message, this calls out the calling for CSFB to carry an information source notice RNC (Radio Network Controller, radio resource controller); The shortcoming of this scheme is that RNC just can identify the CSFB calling in the business stage of finishing, and has affected UE and has admitted control at Radio Resource control connection establishment stage.When UE can also send the Radio Resource control connection and sets up message in the UMTS network, setting up at variable increased a CSFB and calls out indication in the reason (Establishment cause), make RNC receive the Radio Resource control connection and set up reason; The shortcoming of this scheme is to revise ASN.1, and when setting up former because CSFB and calling out, UE can can't report other characteristics of setting up reason.
Summary of the invention
The embodiment of the invention provides a kind of signaling to connect indication and recognition methods and the device of setting up reason, can realize that UE sets up request message indicating RRC connection in the RRC connection and sets up reason, make RNC connect establishment stage at RRC and accurately identify the CSFB calling, and make and admit control.
On the one hand, the embodiment of the invention provides a kind of signaling to connect the indicating means of setting up reason, and described method comprises:
Determining to set up signaling, to connect reason be owing to setting up the circuit domain master in the first network standard and exhale or set up in the process that circuit domain exhaled, and control node by first network standard Access Network and indicate and fall back to the second network standard;
In the second network standard, send the RRC connection and set up request message; Described RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and described indication information is specially RRC and connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.
On the other hand, the embodiment of the invention provides a kind of signaling to connect the recognition methods of setting up reason, and described method comprises:
Receive the radio resource control RRC connection and set up request message;
Obtain value and bivariate value that described RRC connects the first variable in the pre-redirection information of setting up in the request message;
According to value and the described bivariate value of described the first variable, the reason of identifying described signaling connection foundation is that circuit domain call falls after rise.
Another aspect, the embodiment of the invention provide a kind of signaling to connect the indicating device of setting up reason, and described device comprises:
Determining unit, being used for determining to set up signaling connection reason is to exhale or set up the process that circuit domain is exhaled owing to setting up the circuit domain master in the first network standard, is controlled the node indication by first network standard Access Network and falls back to the second network standard;
Transmitting element is used for sending the RRC connection in the second network standard and sets up request message; Described RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and described indication information is specially RRC and connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.
Again on the one hand, the embodiment of the invention provides a kind of signaling to connect the recognition device of setting up reason, and described device comprises:
Receiving element is used for receiving the radio resource control RRC connection and sets up request message;
Acquiring unit is used for obtaining value and the bivariate value that described RRC connects the first variable in the pre-redirection information of setting up request message;
Recognition unit is used for value and described bivariate value according to described the first variable, and the reason of identifying described signaling connection foundation is that circuit domain call falls after rise.
Thus, the embodiment of the invention has realized that UE sets up request message indicating RRC connection in the RRC connection and sets up reason, make RNC connect establishment stage at RRC and accurately identify CSFB and call out, and whether connect type of service that establishment stage connects according to RRC at RRC be to call out from the CSFB that the first network standard falls back to the second network standard to admit control.
Description of drawings
The signaling that Fig. 1 provides for the embodiment of the invention connects the application scenarios schematic diagram of indication and the recognition methods of setting up reason;
The signaling that Fig. 2 provides for the embodiment of the invention connects the flow chart of the indicating means of setting up reason;
The another signaling that Fig. 3 provides for the embodiment of the invention connects the flow chart of the indicating means of setting up reason;
The signaling that Fig. 4 provides for the embodiment of the invention connects the flow chart of the recognition methods of setting up reason;
The signaling that Fig. 5 provides for the embodiment of the invention connects the information interaction schematic diagram of the indicating means of setting up reason;
The signaling that Fig. 6 provides for the embodiment of the invention connects the schematic diagram of the indicating device of setting up reason;
The signaling that Fig. 7 provides for the embodiment of the invention connects the schematic diagram of the recognition device of setting up reason.
Embodiment
In below describing, in order to illustrate rather than in order limiting, to have proposed the detail such as particular system structure, interface, technology, understand the present invention in order to thoroughly cut.Yet, not it will be clear to one skilled in the art that in having other embodiment of these details and can realize the present invention yet.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders description of the invention.
The techniques described herein may be used in various communication systems, current 2G for example, 3G communication system and next generation communication system, global system for mobile communications (GSM for example, Global System for Mobile communications), code division multiple access (CDMA, Code Division Multiple Access) system, time division multiple access (TDMA, Time Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA) (WCDMA, Wideband Code Division Multiple Access Wireless), frequency division multiple access (FDMA, Frequency Division Multiple Addressing) system, OFDM (OFDMA, Orthogonal Frequency-Division Multiple Access) system, Single Carrier Frequency Division Multiple Access (SC-FDMA) system, GPRS (GPRS, General Packet Radio Service) system, Long Term Evolution (LTE, Long Term Evolution) system, and other these type of communication systems.
In conjunction with subscriber equipment and/or base station and/or base station controller various aspects are described herein.
Subscriber equipment, can be that wireless terminal also can be catv terminal, wireless terminal can be to point to the equipment that the user provides voice and/or data connectivity, has the portable equipment of wireless connecting function or is connected to other treatment facilities of radio modem.Wireless terminal can be through wireless access network (for example, RAN, Radio Access Network) communicates with one or more core net, wireless terminal can be portable terminal, such as mobile phone (or being called " honeycomb " phone) with have the computer of portable terminal, for example, can be portable, pocket, hand-hold type, mobile device built-in computer or vehicle-mounted, they and wireless access network exchange language and/or data.For example, Personal Communications Services (PCS, Personal Communication Service) phone, cordless telephone, Session initiation Protocol (SIP) phone, wireless local loop (WLL, Wireless Local Loop) stand, the equipment such as personal digital assistant (PDA, Personal Digital Assistant).Wireless terminal also can be called system, subscriber unit (Subscriber Unit), subscriber station (Subscriber Station), mobile radio station (Mobile Station), travelling carriage (Mobile), distant station (Remote Station), access point (Access Point), remote terminal (Remote Terminal), (Access Terminal) accesses terminal, user terminal (User Terminal), user agent (User Agent), subscriber equipment (User Device), or subscriber's installation (User Equipment).
Need to prove, user equipment (UE) in the present embodiment is to have the FDD that supports the first standard or the ability of supporting the TDD of the first standard, just under scene of the present invention, use reports the FDD that oneself neither supports the first network standard also not support this method of ability of the TDD of first network standard, and next reason to second network node indication connection this moment foundation is a circuit domain dropping calling of falling back to the second network standard from the first network standard.
Base station (for example, access point) can refer in the Access Network on the interface aloft the equipment by one or more sectors and wireless terminal communications.Air frame and IP grouping that the base station can be used for receiving are changed mutually, and as the router between the remainder of wireless terminal and Access Network, wherein the remainder of Access Network can comprise Internet protocol (IP) network.The base station also tunable to the attribute management of air interface.For example, the base station can be the base station (BTS among GSM or the CDMA, Base Transceiver Station), it also can be the base station (NodeB) among the WCDMA, can also be evolved base station (NodeB or eNB or the e-NodeB among the E-UTRA, evolutional Node B), the present invention does not limit.
Base station controller can be the base station controller (BSC, base station controller) among GSM or the CDMA, also can be the radio network controller (RNC, Radio Network Controller) among the WCDMA, and the present invention does not limit.
In addition, term " system " and " network " often are used interchangeably in this article herein.Herein term " and/or ", only be a kind of incidence relation of describing affiliated partner, can there be three kinds of relations in expression, for example, A and/or B can represent: individualism A exists A and B, these three kinds of situations of individualism B simultaneously.In addition, character "/" represents that generally forward-backward correlation is to liking a kind of relation of "or" herein.
The signaling that Fig. 1 provides for the embodiment of the invention connects the application scenarios schematic diagram of indication and the recognition methods of setting up reason.As shown in Figure 1, signaling that the embodiment of the invention provides connects the indication of setting up reason and recognition methods and device when practical application, connect indication and the recognition methods of setting up reason as a kind of new signaling and can be applicable to UE support first network standard, such as the E-UTRA network, but the first network standard scene of support voice call business not.The possibility that UE initiates the CSFB calling has a lot, can after connecting and initiated data service, the RRC that accesses the first network standard initiate voice call service, also can directly initiate speech business, whether the type of service that the RRC that the embodiment of the invention provides the Access Network control node identification UE of second network standard to initiate connects is the method that falls back to the CSFB calling of second network standard from the first network standard.
The embodiment of the invention provides a kind of signaling to connect indication and recognition methods and the device of setting up reason for the defective of the method for identification CSFB calling under the prior art.To connect reason be owing to setting up the circuit domain master in the first network standard and exhale or set up in the process that circuit domain exhaled when UE determines to set up signaling, control node by first network standard Access Network and indicate and fall back to the second network standard; Send the RRC connection in the second network standard and set up request message; Described RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and described indication information is specially RRC and connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.The Access Network control node of second network standard receives the radio resource control RRC connection and sets up request message; Obtain value and bivariate value that described RRC connects the first variable in the pre-redirection information of setting up in the request message; According to value and the described bivariate value of described the first variable, the reason of identifying described signaling connection foundation is that circuit domain call falls after rise.Thus, the embodiment of the invention has realized that UE sets up request message indicating RRC connection in the RRC connection and sets up reason, make RNC connect establishment stage at RRC and accurately identify CSFB and call out, and whether connect type of service that establishment stage connects according to RRC at RRC be to call out from the CSFB that the first network standard falls back to the second network standard to admit control.
In the embodiment of the invention, network formats refers to concrete access technology, such as UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system), GSM (Global System for Mobile communication, global system for mobile communications), LTE (Long Term Evolution, Long Term Evolution) etc.The Access Network control node of network formats, refer to the network equipment with Radio Resource control function, RNC (Radio Network Controller for example, radio resource controller), BSC (Base Station Controller, base station controller), e NB (evolved Node B, evolved base station) etc.
In the embodiment of the invention, UE determines to set up signaling, and to connect reason be owing to setting up the circuit domain master in the first network standard and exhale or set up in the process that circuit domain exhaled, and control node by first network standard Access Network and indicate and fall back to the second network standard; Send the RRC connection in the second network standard and set up request message; Described RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and described indication information is specially RRC and connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.The Access Network control node of second network standard receives the radio resource control RRC connection and sets up request message; Obtain value and bivariate value that described RRC connects the first variable in the pre-redirection information of setting up in the request message; According to value and the described bivariate value of described the first variable, the reason of identifying described signaling connection foundation is that circuit domain call falls after rise.
In the following embodiments, take the first network standard as E-UTRA and the second network standard be example as UMTS, the signaling that describing the embodiment of the invention provides connects the detailed process that the indication of setting up reason and recognition methods indication and identification CSFB are called out.
The signaling that Fig. 2 provides for the embodiment of the invention connects the flow chart of the indicating means of setting up reason.This embodiment main body is UE, wherein describes UE in detail and connects the Access Network control node of setting up request message indication UMTS by RRC, judges such as the RNC controller whether RRC establishment of connection reason is the method that CSFB calls out.As shown in Figure 2, the present embodiment may further comprise the steps:
Determining to set up signaling, to connect reason be owing to setting up the circuit domain master in the first network standard and exhale or set up in the process that circuit domain exhaled, and control node by first network standard Access Network and indicate the method that falls back to the second network standard to be specially: mainly in first network standard transtation mission circuit territory exhale or set up circuit domain and exhaled message; The Access Network control node that receives described first network standard is exhaled for described circuit domain master or is set up circuit domain by the radio resource control RRC message of being exhaled message to send, and carries frequency and/or the cell information of second network standard in the described RRC message; According to described RRC message, in the second network standard, find any one residential quarter of satisfying resident condition to carry out resident.
When UE is attached in the E-UTRA network, may initiate the business based on circuit domain, such as voice call service.Audio call can be that local UE initiates to other UE, and this moment, local UE sent active circuits territory message related to calls to network; Audio call can also be that other UE initiate to local UE, and this moment, local UE sent passive circuit domain call message to network.
Need to prove, radio resource control RRC message, comprise that RRC connects refusal/release message, perhaps other can be used for making UE can be fallen back to by first network standard (such as the E-UTRA network) the radio resource control RRC message of second network standard (such as the UMTS network).
Because E-UTRA not support voice calls out, so the Access Network of E-UTRA network control node can send RRC message to UE when receiving the voice call service of UE initiation.Frequency and/or the cell information of UMTS network have been carried in the RRC message.
UE is after resident under the second network standard, can initiate RRC and connect the request of foundation, when initiating to connect the foundation request, RRC can be set connect the parameter of setting up in the request message, arrange RRC connect set up the value and bivariate value of the first variable in the pre-redirection information that carries in the request message before, can judge at first whether RRC establishment of connection reason is to fall back to the CSFB that initiates under the second network standard from the first network standard to call out.
UE determines that the RRC establishment of connection is former because when falling back to the CSFB that initiates under the second network standard and call out from the first network standard, and described RRC connects that the value of setting up the first variable in the pre-redirection information that carries in the request message is set to false False and bivariate value also is set to false False.
The first variable refers to the Support of E-UTRA FDD (supporting Frequency Division Duplexing (FDD) E-UTRA frequency) among the pre-redirection information Pre-Redirection info, and the second variable refers to the Support of E-UTRA TDD among the pre-redirection information Pre-Redirection info.
Wherein, the value of Support of E-UTRA FDD and Support of E-UTRA TDD has two kinds, and two values of true True and false False are namely arranged.When the value of UE Support of E-UTRA FDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support Frequency Division Duplexing (FDD) E-UTRA frequency; When the value of UE Support of E-UTRA TDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support time division duplex E-UTRA frequency.
When the value of the value of Suppor t of E-UTRA FDD and Support of E-UTRA TDD had one all be True for True or two, the Access Network that the UMTS network is described was controlled node and UE can be redirected to the E-UTRA network.
When the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD all is False, illustrate that UE initiates the RRC establishment of connection former because CSFB calls out.
In the embodiment of the invention, UE determines to set up signaling, and to connect reason be owing to setting up the circuit domain master in the first network standard and exhale or set up in the process that circuit domain exhaled, and control node by first network standard Access Network and indicate and fall back to the second network standard; Send the RRC connection in the second network standard and set up request message; Described RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and described indication information is specially RRC and connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.Thus, the embodiment of the invention has realized that UE sets up request message indicating RRC connection in the RRC connection and sets up reason, makes RNC connect establishment stage at RRC and accurately identifies the CSFB calling.
The another signaling that Fig. 3 provides for the embodiment of the invention connects the flow chart of the indicating means of setting up reason.This embodiment main body is UE, wherein describes UE in detail and connects the Access Network control node of setting up request message indication UMTS by RRC, judges such as the RNC controller whether RRC establishment of connection reason is the method that CSFB calls out.As shown in Figure 3, the present embodiment may further comprise the steps:
When UE is attached in the E-UTRA network, may initiate the business based on circuit domain, such as voice call service.Audio call can be that local UE initiates to other UE, and this moment, local UE sent active circuits territory message related to calls to network; Audio call can also be that other UE initiate to local UE, and this moment, local UE sent passive circuit domain call message to network.
Need to prove, radio resource control RRC message, comprise that RRC connects refusal/release message, perhaps other can be used for making UE can be fallen back to by first network standard (such as the E-UTRA network) the radio resource control RRC message of second network standard (such as the UMTS network).
Because E-UTRA not support voice calls out, so the Access Network of E-UTRA network control node can send RRC message to UE when receiving the voice call service of UE initiation.Frequency and/or the cell information of UMTS network have been carried in the RRC message.
UE is after resident under the second network standard, can initiate RRC and connect the request of foundation, when initiating to connect the foundation request, RRC can be set connect the parameter of setting up in the request message, arrange RRC connect set up the value and bivariate value of the first variable in the pre-redirection information that carries in the request message before, can judge at first whether RRC establishment of connection reason is to fall back to the CSFB that initiates under the second network standard from the first network standard to call out.
The RRC establishment of connection is former because when falling back to the CSFB that initiates under the second network standard and call out from the first network standard, and described RRC connects that the value of setting up the first variable in the pre-redirection information that carries in the request message is set to false False and bivariate value also is set to false False.
The first variable refers to the Support of E-UTRA FDD (supporting Frequency Division Duplexing (FDD) E-UTRA frequency) among the pre-redirection information Pre-Redirection info, and the second variable refers to the Support of E-UTRA TDD among the pre-redirection information Pre-Redirection info.
Wherein, the value of Support of E-UTRA FDD and Support of E-UTRA TDD has two kinds, and two values of true True and false False are namely arranged.When the value of UE Support of E-UTRA FDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support Frequency Division Duplexing (FDD) E-UTRA frequency; When the value of UE Support of E-UTRA TDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support time division duplex E-UTRA frequency.
When the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD had one all be True for True or two, the Access Network that the UMTS network is described was controlled node and UE can be redirected to the E-UTRA network.
When the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD all is False, illustrate that UE initiates the RRC establishment of connection former because CSFB calls out.
If judging described frequency and/or cell information is frequency and/or the cell information of UMTS network, then UE will arrange the value of the first variable Support of E-UTRA FDD (supporting Frequency Division Duplexing (FDD) E-UTRA frequency) among the pre-redirection information Pre-Redirection info in the RRC connection request message and the value of the second variable Support of E-UTRA TDD (supporting time division duplex frequency E-UTRA frequency), two values all are set to false False, are that CSFB calls out in order to the service call type of indicating receiver side RRC to connect.Otherwise UE can not set up the RRC connection value of the first variable Support of E-UTRA FDD in the pre-redirection information in the request message (supporting Frequency Division Duplexing (FDD) E-UTRA frequency) and the value of the second variable Support of E-UTRA TDD (supporting time division duplex frequency E-UTRA frequency) all is set to False.
Set up the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD at UE after, can send the RRC that carries pre-redirection information and connect and set up request message.
UE sends above-mentioned RRC connection and sets up request message, its objective is by receiver side, after for example the Access Network of UMTS network control node RNC controller receives, by judging value and the bivariate value of the first variable that above-mentioned request message carries, whether identify RRC establishment of connection reason is the CSFB calling of falling back to the second network standard from the first network standard, and carry out follow-up admittance control according to recognition result and process.
In the embodiment of the invention, UE determines to set up signaling, and to connect reason be owing to setting up the circuit domain master in the first network standard and exhale or set up in the process that circuit domain exhaled, and control node by first network standard Access Network and indicate and fall back to the second network standard; Send the RRC connection in the second network standard and set up request message; Described RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and described indication information is specially RRC and connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.Thus, the embodiment of the invention has realized that UE sets up request message indicating RRC connection in the RRC connection and sets up reason, makes RNC connect establishment stage at RRC and accurately identifies the CSFB calling.Because UE does not revise ASN.1, therefore more be applicable to the UE equipment of earlier version, in addition, what the embodiment of the invention was used is that the existing variable in the existing pre-redirection information was realized technical scheme during RRC connected, do not take the value of setting up reason, so UE still can report other characteristics that make a call.
Whether what above-described embodiment was described is to call out from the CSFB that the E-UTRA network falls back to the UMTS network for how UE connects RRC establishment of connection reason that the Access Network control node UE that sets up request message indication UMTS network initiates by RRC, and following embodiment to be exactly the Access Network control node of describing the UMTS network by the RRC that receives connect sets up request message and identify from the E-UTRA network and fall back to the process that the CSFB of UMTS network calls out.The signaling that Fig. 4 provides for the embodiment of the invention connects the flow chart of the recognition methods of setting up reason.Access Network that this embodiment main body is UMTS network control node, the Access Network control node of wherein describing the UMTS network in detail connect by the RRC that receives to be set up request message and identifies from the E-UTRA network and fall back to the process that the CSFB of UMTS network calls out.As shown in Figure 4, the present embodiment may further comprise the steps:
After request message is set up in UE transmission RRC connection, the Access Network control node of UMTS network can receive this RRC connection request message, and judge this RRC connects to set up whether carry pre-redirection information Pre-Redirection info in the request message, comprise the first variable Support of E-UTRA FDD (supporting Frequency Division Duplexing (FDD) E-UTRA frequency) and the second variable Support of E-UTRA TDD (supporting time division duplex frequency E-UTRA frequency) in the pre-redirection information.
When carrying pre-redirection information in this RRC connection request message, UE side support E-UTRA network is described, the UMTS network can be with UE from the UMTS network redirection to the E-UTRA network.
Step 402, the Access Network control node of UMTS network obtains value and the bivariate value that described RRC connects the first variable in the pre-redirection information of setting up in the request message.
The Access Network control node of UMTS network is resolved this RRC connection and is set up request message, and gets access to the value of the Support of E-UTRA FDD in the pre-redirection information and the value of Support of E-UTRA TDD.
The value of Support of E-UTRA FDD and Support of E-UTRA TDD has two kinds, and two values of true True and false False are namely arranged.When the value of UE Support of E-UTRA FDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support Frequency Division Duplexing (FDD) E-UTRA frequency; When the value of UE Support of E-UTRA TDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support time division duplex E-UTRA frequency.
When the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD all is False, illustrate that RRC that UE initiates is connected to CSFB and calls out.
When the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD has one to be True, when perhaps two values all be True, the Access Network that the UMTS network is described was controlled node and UE can be redirected to the E-UTRA network.
According to described the first variable and described bivariate value, whether identify described RRC connection is that the concrete operations that CSFB calls out are: when the value of described the first variable and described bivariate value were false False simultaneously, the type of service that initiate the identification opposite end was that CSFB calls out; It is true True or two values when all being True that the value of described the first variable and described bivariate value have a value, and the RRC establishment of connection reason of described UE not being initiated is not identified as CSFB and calls out.
After the Access Network control node of UMTS network identifies the CSFB calling, also can add up CSFB and call out, and admit control.When the Access Network control node of UMTS network is received the calling of CSFB calling and the UE transmission of only supporting the UMTS network at the same time, can call out by the preferential CSFB of reception, so the Access Network of UMTS network control node is accurately identified CSFB and is called out and help to improve the success rate of CSFB call setup success.
In the embodiment of the invention, the Access Network of UMTS network control node receive RRC connect set up request message after, obtain described RRC and connect value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message; According to value and the described bivariate value of described the first variable, whether the RRC establishment of connection reason of identifying described UE initiation is that circuit domain dropping CSFB calls out.Thus, the embodiment of the invention has realized whether the Access Network control node of UMTS network identifies this connection at RRC connection establishment stage is that CSFB calls out, and makes admittance control according to recognition result and process.
Whether above-mentioned three embodiment how to connect RRC establishment of connection reason that the Access Network control node UE that sets up request message indication UMTS network initiates by RRC be to call out from the CSFB that the E-UTRA network falls back to the UMTS network if having described UE, and the Access Network of UMTS network control node connects by the RRC that receives and sets up request message and identify from the E-UTRA network and fall back to the process that the CSFB of UMTS network calls out; Following embodiment describes the information interactive process that signaling connects the indicating means of setting up reason.The signaling that Fig. 5 provides for the embodiment of the invention connects the information interaction schematic diagram of the indicating means of setting up reason, and as shown in Figure 5, reciprocal process is as follows:
Step 501, UE and first network standard, the circuit domain master exhales or circuit domain is exhaled the mutual of message as carrying out between the access network control node of E-UTRA network.
When UE is attached in the E-UTRA network, may initiate the business based on circuit domain, such as voice call service.Audio call can be that local UE initiates to other UE, and this moment, local UE sent active circuits territory message related to calls to network; Audio call can also be that other UE initiate to local UE, and this moment, local UE sent passive circuit domain call message to network.
Step 502, the Access Network control node of first network standard sends to the UE side and is redirected Indication message.
Should be redirected Indication message is radio resource control RRC message, comprise that RRC connects refusal/release message, perhaps other can be used for making UE can be fallen back to by first network standard (such as the E-UTRA network) the radio resource control RRC message of second network standard (such as the UMTS network).
Should be redirected in the Indication message and carry the second network standard, such as frequency and/or the cell information of UMTS network.
Step 503, UE side are determined that signaling connects and are set up former because fall back to the second network standard from the first network standard, call out such as the circuit domain dropping of UMTS network.
The UE lateral root determines that according to frequency and/or the cell information of the UMTS network that carries in the RRC message RRC establishment of connection that will initiate is former because fall back to the circuit domain dropping calling of UMTS network from the E-UTRA network.
Step 504, the UE side sends the RRC connection and sets up request message, this RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and this indication information is that RRC connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.
The UE side determines that the RRC establishment of connection of initiating is former because fall back to the circuit domain dropping calling of UMTS network from the E-UTRA network after, resident under the second network standard, then initiate RRC and connect the request of foundation, when initiating to connect the foundation request, RRC can be set connect the parameter of setting up in the request message, RRC be connected value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message all be set to False.
The first variable refers to the Support of E-UTRA FDD (supporting Frequency Division Duplexing (FDD) E-UTRA frequency) among the pre-redirection information Pre-Redirection info, and the second variable refers to the Support of E-UTRA TDD among the pre-redirection information Pre-Redirection info.
Wherein, the value of Support of E-UTRA FDD and Support of E-UTRA TDD has two kinds, and two values of true True and false False are namely arranged.When the value of UE Support of E-UTRA FDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support Frequency Division Duplexing (FDD) E-UTRA frequency; When the value of UE Support of E-UTRA TDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support time division duplex E-UTRA frequency.
When the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD had one all be True for True or two, the Access Network that the UMTS network is described was controlled node and UE can be redirected to the E-UTRA network.
When the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD all is False, illustrate that UE initiates the RRC establishment of connection former because CSFB calls out.
In the embodiment of the invention, UE determines to set up signaling, and to connect reason be owing to setting up the circuit domain master in the first network standard and exhale or set up in the process that circuit domain exhaled, and control node by first network standard Access Network and indicate and fall back to the second network standard; Send the RRC connection in the second network standard and set up request message; Described RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and described indication information is specially RRC and connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.Thus, the embodiment of the invention has realized that UE sets up request message indicating RRC connection in the RRC connection and sets up reason, makes RNC connect establishment stage at RRC and accurately identifies the CSFB calling.
Correspondingly, the embodiment of the invention provides a kind of signaling to connect the indicating device of setting up reason, and the signaling that Fig. 5 provides for the embodiment of the invention connects the schematic diagram of the indicating device of setting up reason.As shown in Figure 5, the present embodiment comprises with lower unit:
Determining unit 601, being used for determining to set up signaling connection reason is to exhale or set up the process that circuit domain is exhaled owing to setting up the circuit domain master in the first network standard, is controlled the node indication by first network standard Access Network and falls back to the second network standard.
Determining unit 601 comprises: send subelement 603, be used for mainly in first network standard transtation mission circuit territory exhaling or setting up circuit domain and exhaled message; Receive subelement 604, the Access Network control node that is used for receiving described first network standard is exhaled for described circuit domain master or is set up circuit domain by the radio resource control RRC message of being exhaled message to send, and carries frequency and/or the cell information of second network standard in the described RRC message; Resident subelement 605 is used for according to described RRC message, finds any one residential quarter of satisfying resident condition to carry out resident in the second network standard.
When UE is attached in the E-UTRA network, may initiate the business based on circuit domain, such as voice call service.Audio call can be that local UE initiates to other UE, and this moment, local UE sent active circuits territory message related to calls to network; Audio call can also be that other UE initiate to local UE, and this moment, local UE sent passive circuit domain call message to network.
Need to prove, radio resource control RRC message comprises that RRC connects refusal/release message, and perhaps other can be used for making UE can be fallen back to by first network standard (such as the E-UTRA network) message of second network standard (such as the UMTS network).
Because E-UTRA not support voice calls out, so the Access Network of E-UTRA network control node can send RRC message to UE when receiving the voice call service of UE initiation.Frequency and/or the cell information of UMTS network have been carried in the RRC message.
Transmitting element 602 is used for sending the RRC connection in the second network standard and sets up request message; Described RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and described indication information is specially RRC and connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.
UE is after resident under the second network standard, can initiate RRC and connect the request of foundation, when initiating to connect the foundation request, RRC can be set connect the parameter of setting up in the request message, arrange RRC connect set up the value and bivariate value of the first variable in the pre-redirection information that carries in the request message before, can determine at first whether RRC establishment of connection reason is to fall back to the CSFB that initiates under the second network standard from the first network standard to call out.
The RRC establishment of connection is former because when falling back to the CSFB that initiates under the second network standard and call out from the first network standard, and described RRC connects that the value of setting up the first variable in the pre-redirection information that carries in the request message is set to false False and bivariate value also is set to false False.
The first variable refers to the Support of E-UTRA FDD (supporting Frequency Division Duplexing (FDD) E-UTRA frequency) among the pre-redirection information Pre-Redirection info, and the second variable refers to the Support of E-UTRA TDD among the pre-redirection information Pre-Redirection info.
Wherein, the value of Support of E-UTRA FDD and Support of E-UTRA TDD has two kinds, and two values of true True and false False are namely arranged.When the value of UE Support of E-UTRA FDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support Frequency Division Duplexing (FDD) E-UTRA frequency; When the value of UE Support of E-UTRA TDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support time division duplex E-UTRA frequency.
When the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD had one all be True for True or two, the Access Network that the UMTS network is described was controlled node and UE can be redirected to the E-UTRA network.
When the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD all is False, illustrate that the RRC establishment of connection that UE initiates is former because CSFB calls out.
Set up the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD at UE after, can send the RRC that carries pre-redirection information and connect and set up request message.
UE sends above-mentioned RRC connection and sets up request message, its objective is by receiver side, after for example the RNC controller receives, by judging value and the bivariate value of the first variable that above-mentioned request message carries, whether identify RRC establishment of connection reason is the CSFB calling of falling back to the second network standard from the first network standard, and carry out follow-up admittance control according to recognition result and process.
In the embodiment of the invention, UE determines to set up signaling, and to connect reason be owing to setting up the circuit domain master in the first network standard and exhale or set up in the process that circuit domain exhaled, and control node by first network standard Access Network and indicate and fall back to the second network standard; Send the RRC connection in the second network standard and set up request message; Described RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and described indication information is specially RRC and connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.Thus, the embodiment of the invention has realized that UE sets up request message indicating RRC connection in the RRC connection and sets up reason, makes RNC connect establishment stage at RRC and accurately identifies the CSFB calling.Because UE does not revise ASN.1, therefore more be applicable to the UE equipment of earlier version, in addition, what the embodiment of the invention was used is that the existing variable in the existing pre-redirection information was realized technical scheme during RRC connected, do not take the value of setting up reason, so UE still can report other characteristics that make a call.
Above-described embodiment describe for how UE connects by RRC whether the RRC establishment of connection reason that the Access Network control node UE that sets up request message indication UMTS network initiates is that CSFB calls out, and following embodiment to be exactly the Access Network control node of describing the UMTS network by the RRC that receives connect sets up request message and identify the process that CSFB calls out.The signaling that Fig. 6 provides for the embodiment of the invention connects the schematic diagram of the recognition device of setting up reason.As shown in Figure 6, the present embodiment comprises with lower unit:
Receiving element 701 is used for receiving the radio resource control RRC connection and sets up request message.
After request message is set up in UE transmission RRC connection, the Access Network control node of UMTS network can receive this RRC connection request message, and judge this RRC connects to set up whether carry pre-redirection information Pre-Redirection info in the request message, comprise the first variable Support of E-UTRA FDD (supporting Frequency Division Duplexing (FDD) E-UTRA frequency) and the second variable Support of E-UTRA TDD (supporting time division duplex frequency E-UTRA frequency) in the pre-redirection information.
Acquiring unit 702 is used for obtaining value and the bivariate value that described RRC connects the first variable in the pre-redirection information of setting up request message.
The Access Network control node of UMTS network is resolved this RRC connection and is set up request message, and gets access to the value of the Support of E-UTRA FDD in the pre-redirection information and the value of Support of E-UTRA TDD.
The value of Support of E-UTRA FDD and Support of E-UTRA TDD has two kinds, and two values of true True and false False are namely arranged.When the value of UE Support of E-UTRA FDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support Frequency Division Duplexing (FDD) E-UTRA frequency; When the value of UE Support of E-UTRA TDD is set to true time, illustrate that the Access Network control node UE of UE indication UMTS network can support time division duplex E-UTRA frequency.
When the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD all is False, illustrate that RRC that UE initiates is connected to CSFB and calls out.
When the value of the value of Support of E-UTRA FDD and Support of E-UTRA TDD has one to be True, when perhaps two values all be True, the Access Network that the UMTS network is described was controlled node and UE can be redirected to the E-UTRA network.
In the embodiment of the invention, the Access Network of UMTS network control node receive RRC connect set up request message after, obtain described RRC and connect value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message; According to value and the described bivariate value of described the first variable, whether the RRC establishment of connection reason of identifying described UE initiation is that circuit domain dropping CSFB calls out.Thus, the embodiment of the invention has realized whether the Access Network control node of UMTS network identifies this connection at RRC connection establishment stage is that CSFB calls out, and makes admittance control according to recognition result and process.
The those skilled in the art can be well understood to, be the convenience described and succinct, only the division with above-mentioned each functional module is illustrated, in the practical application, can as required the above-mentioned functions distribution be finished by different functional modules, the internal structure that is about to device is divided into different functional modules, to finish all or part of function described above.The system of foregoing description, the specific works process of device and unit can with reference to the corresponding process among the preceding method embodiment, not repeat them here.
In several embodiment that the application provides, should be understood that, disclosed system, apparatus and method can realize by another way.For example, device embodiment described above only is schematic, for example, the division of described module or unit, only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, the shown or coupling each other discussed or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
Described unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of unit to realize the purpose of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics of unit exists, and also can be integrated in the unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, also can adopt the form of SFU software functional unit to realize.
If described integrated unit is realized with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding, part or all or part of of this technical scheme that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) or processor (processor) carry out all or part of step of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), the various media that can be program code stored such as random access memory (RAM, Random Access Memory), magnetic disc or CD.
The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (20)
1. a signaling connects the indicating means of setting up reason, it is characterized in that, described method comprises:
Determining to set up signaling, to connect reason be owing to setting up the circuit domain master in the first network standard and exhale or set up in the process that circuit domain exhaled, and control node by first network standard Access Network and indicate and fall back to the second network standard;
In the second network standard, send the RRC connection and set up request message; Described RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and described indication information is specially RRC and connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.
2. signaling as claimed in claim 1 connects the indicating means of setting up reason, it is characterized in that, describedly determine to set up signaling to connect reason be owing to setting up the circuit domain master in the first network standard and exhale or set up in the process that circuit domain exhaled, control node by first network standard Access Network and indicate the method that falls back to the second network standard to be specially:
Send in the first network standard and to set up the circuit domain master and exhale or set up circuit domain and exhaled message;
The Access Network control node that receives described first network standard is set up the circuit domain master and is exhaled or set up circuit domain by the radio resource control RRC message of being exhaled message to send for described, carries frequency and/or the cell information of second network standard in the described RRC message;
According to described RRC message, in the second network standard, find any one residential quarter of satisfying resident condition to carry out resident.
3. signaling as claimed in claim 2 connects the indicating means of setting up reason, it is characterized in that, described indication information is specially: when the former circuit domain dropping CSFB because of fall back to the second network standard from the first network standard of described RRC establishment of connection called out, it was that false False and bivariate value also are false False that described RRC connects the value of setting up the first variable in the pre-redirection information that carries in the request message.
4. signaling as claimed in claim 1 connects the indicating means of setting up reason, it is characterized in that, described when being controlled node indication and fall back to the second network standard by first network standard Access Network, as to utilize the Access Network control node of described first network standard to send RRC message;
Described RRC message is specially and makes the local control message that is fallen back to the second network standard by the first network standard.
5. signaling as claimed in claim 1 connects the indicating means of setting up reason, it is characterized in that, described when being controlled node indication and fall back to the second network standard by first network standard Access Network, as to utilize the Access Network control node of described first network standard to send RRC message;
Described RRC message is specially RRC and connects refusal/release message.
6. connect the indicating means of setting up reason such as the described signaling of any one among the claim 1-5, described the first variable refers to the local first network standard FDD of supporting, described the second variable refers to the local first network standard TDD of supporting.
7. connect the indicating means of setting up reason such as the described signaling of any one among the claim 1-5, described first network standard is the E-UTRA network, and described second network standard is the UMTS network.
8. a signaling connects the recognition methods of setting up reason, it is characterized in that, described method comprises:
Receive the radio resource control RRC connection and set up request message;
Obtain value and bivariate value that described RRC connects the first variable in the pre-redirection information of setting up in the request message;
According to value and the described bivariate value of described the first variable, the reason of identifying described signaling connection foundation is that circuit domain call falls after rise.
9. signaling as claimed in claim 8 connects the recognition methods of setting up reason, it is characterized in that, described value and described bivariate value according to described the first variable, identifying described signaling, to connect the reason of setting up be that circuit domain call falls after rise and is specially: when the value of described the first variable and described bivariate value are false False simultaneously, determine that described connection sets up former because circuit domain call falls after rise.
10. connect the indicating device of setting up reason such as the described signaling of any one among the claim 8-9, described the first variable refers to support first network standard FDD, and described the second variable refers to that UE supports first network standard TDD.
11. a signaling connects the indicating device of setting up reason, it is characterized in that, described device comprises:
Determining unit, being used for determining to set up signaling connection reason is to exhale or set up the process that circuit domain is exhaled owing to setting up the circuit domain master in the first network standard, is controlled the node indication by first network standard Access Network and falls back to the second network standard;
Transmitting element is used for sending the RRC connection in the second network standard and sets up request message; Described RRC connects to set up and carries indication signaling in the request message and connect and set up the indication information that reason is circuit domain dropping, and described indication information is specially RRC and connects value and the bivariate value of setting up the first variable in the pre-redirection information that carries in the request message.
12. signaling as claimed in claim 10 connects the indicating device of setting up reason, it is characterized in that, described determining unit specifically comprises:
Send subelement, be used for mainly in first network standard transtation mission circuit territory exhaling or setting up circuit domain and exhaled message;
Receive subelement, the Access Network control node that is used for receiving described first network standard is exhaled for described circuit domain master or is set up circuit domain by the radio resource control RRC message of being exhaled message to send, and carries frequency and/or the cell information of second network standard in the described RRC message;
Resident subelement is used for according to described RRC message, finds any one residential quarter of satisfying resident condition to carry out resident in the second network standard.
13. signaling as claimed in claim 10 connects the indicating device of setting up reason, it is characterized in that, described indication information is specially: when the former circuit domain dropping CSFB because of fall back to the second network standard from the first network standard of described RRC establishment of connection called out, it was that false False and bivariate value also are false False that described RRC connects the value of setting up the first variable in the pre-redirection information that carries in the request message.
14. signaling as claimed in claim 11 connects the indicating device of setting up reason, it is characterized in that, described when being controlled node indication and fall back to the second network standard by first network standard Access Network, as to utilize the Access Network control node of described first network standard to send RRC message;
Described RRC message is specially and makes the local control message that is fallen back to the second network standard by the first network standard.
15. signaling as claimed in claim 11 connects the indicating means of setting up reason, it is characterized in that, described when being controlled node indication and fall back to the second network standard by first network standard Access Network, as to utilize the Access Network control node of described first network standard to send RRC message;
Described RRC message is specially RRC and connects refusal/release message.
16. connect the indicating device of setting up reason such as the described signaling of any one among the claim 10-15, described the first variable refers to support first network standard FDD, described the second variable refers to that UE supports first network standard TDD.
17. connect the indicating device of setting up reason such as the described signaling of any one among the claim 10-15, described first network standard is the E-UTRA network, described second network standard is the UMTS network.
18. a signaling connects the recognition device of setting up reason, it is characterized in that, described device comprises:
Receiving element is used for receiving the radio resource control RRC connection and sets up request message;
Acquiring unit is used for obtaining value and the bivariate value that described RRC connects the first variable in the pre-redirection information of setting up request message;
Recognition unit is used for value and described bivariate value according to described the first variable, and the reason of identifying described signaling connection foundation is that circuit domain call falls after rise.
19. signaling as claimed in claim 18 connects the recognition device of setting up reason, it is characterized in that, described recognition unit specifically is used for: when the value of described the first variable and described bivariate value are false Fa l s e simultaneously, determine that the RRC establishment of connection is former because circuit domain call falls after rise.
20. connect the recognition device of setting up reason such as the described signaling of any one among the claim 18-19, described the first variable refers to support first network standard FDD, described the second variable refers to that UE supports first network standard TDD.
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