CN101098556B

CN101098556B - Processing method for improving success rate of communication

Info

Publication number: CN101098556B
Application number: CN2007100785897A
Authority: CN
Inventors: 李贵勇; 何兰; 陈贤亮; 王小华
Original assignee: Chongqing Cyit Communication Technologies Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2007-06-08
Filing date: 2007-06-08
Publication date: 2011-06-22
Anticipated expiration: 2027-06-08
Also published as: CN101098556A

Abstract

The invention provides a method for improving communication success rate, which can avoid call failure caused by long call time of RRC connection when UE processes CS domain user call, to improve the communication success rate of UE. The invention starts a timer T303 only the CC layer of UE side judges the MM connection is built. The invention uses the CC layer at UE side to judge the MM connection build confirm message of MM layer (abbreviated as MMCC_EST_CNF)to judge if the MM connection is built or not.

Description

A kind of processing method that improves success rate of communication

Technical field

The present invention relates to a kind of processing method that improves the mobile communication system success rate of communication, the processing method of particularly a kind of raising 3-G (Generation Three mobile communication system) user terminal (abbreviating UE as) success rate of communication.

Background technology

In universal mobile telecommunications system (abbreviating the UMTS system as), air interface (be Uu Interface, be called the Uu interface again) agreement is divided into Access Layer (abbreviating AS as) and Non-Access Stratum (abbreviating NAS as).Wherein AS comprises the radio resource control layer (abbreviating RRC as) of L1, L2 and L3, the main processing function relevant with wireless access; NAS comprises mobile management layer (abbreviating MM as) and the connection management layer (abbreviating CM as) of L3, the main processing and professional relevant function.Call control layer (abbreviating CC as) is a sublayer of CM layer, mainly finishes the call management functionality of circuit commutative field (abbreviating the CS territory as).

In the prior art, when UE carried out the caller in CS territory, CC course MM layer transmission MM connection was set up request message (abbreviating MMCC_EST_REQ as) request and is set up MM connection, opening timing device T303 (30s) simultaneously.After the MM layer is received this message, set up request message (abbreviating RR_EST_REQ as) request to rrc layer transmission RRC connection and set up the connection of CS domain signaling, therefore rrc layer is initiated the RRC connection and is set up process.RRC connect set up process and finish after, rrc layer connects by RRC sets up acknowledgement message (abbreviating RR_EST_CNF as) indication to the MM layer, and to network side transmission CM service request (abbreviating CMSERVICE REQUEST as) message, after the MM layer receives that the CM business of network side is accepted message (abbreviating CM SERVICE ACCEPT as) or the end of safe mode control procedure, the MM layer will connect foundation confirmation (abbreviating MMCC_EST_CNF as) message to CC layer transmission MM and indicate the MM connection set up successfully.Next UE carries out with network side and calls out relevant L3 message, final access success.

Yet, if connecting the time that the process of setting up continues, RRC surpasses 30s, and this will cause RRC to connect setting up in the process timer T303 overtime, and the CC layer will be initiated local release, finally cause call failure.In the UMTS system, initiate RRC and connect the number of times set up by N300 (being the RRC linkage counter, value 0～7) control, and each time RRC connect set up by T300 (be that RRC connects timer, value 100ms～8000ms) monitoring.Therefore, whole RRC connects the time that the process of setting up continues may be long, the longlyest may surpass 60s.Thus, may cause timer T303 overtime, the CC layer will be initiated local release, finally cause call failure.

Summary of the invention

The present invention proposes a kind of processing method that improves success rate of communication, guarantees UE when carrying out the caller of CS territory, can not set up process duration because of the RRC connection and cause call failure than length, has greatly improved the success rate of communication of UE.

Processing method of the present invention UE side CC layer judge MM connect set up finished after opening timing device T303.

Processing method UE side CC layer of the present invention connects by the MM that whether receives the MM layer to be set up acknowledgement message (abbreviating MMCC_EST_CNF as) and judges that MM connects foundation and whether finishes.

Processing method of the present invention compared with prior art, MM connect set up successfully after opening timing device T303, avoid existing in prior technology RRC to connect setting up process duration long and cause that T303 is overtime and finally cause the situation of call failure, greatly improved the success rate of communication of UE.

Description of drawings

The schematic diagram of interacting message between the normal CS of Fig. 1 prior art territory caller process UE and the network side;

The schematic diagram of interacting message between UE and the network side under Fig. 2 prior art CS territory caller process exception situation;

Fig. 3 processing method of the present invention is at the schematic diagram of interacting message between UE and the network side under the CS territory caller process exception situation.

Below in conjunction with accompanying drawing processing method of the present invention is further described.

Accompanying drawing 1 is the schematic diagram of interacting message between the normal CS of prior art territory caller process UE and the network side.As seen from the figure, connect under the process of the setting up situation of lasting short period at RRC, timer T303 can be not overtime, access success.

Accompanying drawing 2 is schematic diagrames of interacting message between UE and the network side under the prior art CS territory caller process exception situation.As seen from the figure, connect under the process of setting up continue the long period situation of (surpassing 30s) at RRC, connect at RRC and set up that timer T303 is with overtime in the process, the CC layer discharges this locality this time to be called out, and causes call failure.

Accompanying drawing 3 is schematic diagrames of processing method embodiment of the present invention UE and network side signal and interacting message under call abnormal situation.Processing method of the present invention may further comprise the steps:

1, when call out in CS territory of UE initiation, UE side CC course MM layer sends the MM connection and sets up request message MMCC_EST_REQ to set up the MM connection;

2, after the MM layer is received this message, set up request message RR_EST_REQ request to rrc layer transmission RRC connection and set up the connection of CS domain signaling, therefore rrc layer is initiated the RRC connection and is set up process;

3, RRC connect set up process and finish after, rrc layer connects by RRC to be set up acknowledgement message RR_EST_CNF and indicates the layer to MM, and sends CM business request information CM SERVICEREQUEST to network side;

4, after the MM layer received that the CM business of network side is accepted message CM SERVICE ACCEPT or the end of safe mode control procedure, MM course CC layer sent the MM connection and sets up acknowledgement message MMCC_EST_CNF;

5, UE side CC layer receives the MM connection and sets up acknowledgement message MMCC_EST_CNF, opening timing device T303;

6, UE carries out with network side and calls out relevant L3 interacting message, final access success.

As shown in Figure 3, connect at RRC and to set up in the process, timer T303 does not open, and just opens after completing successfully but connect to set up at MM, sets up under the process duration situation of long (surpassing 30s) even therefore connect at RRC, and calling out also can be successful.

The inventive method also can have other various embodiments; without departing from the spirit and substance of the case in the method for the present invention; those skilled in the art work as can make various corresponding changes or distortion according to the inventive method, but these corresponding changes or distortion all belong to the claim protection range of the inventive method.

Claims

1. processing method that improves success rate of communication, when UE carries out the caller in circuit switching (CS) territory, calling controling CC course mobile management MM layer transmission mobile management MM connection is set up request message MMCC_EST_REQ request and is set up the MM connection, after the MM layer is received this message, set up request message RR_EST_REQ request to the connection of radio resource control RRC layer transmission radio resource control RRC and set up the connection of CS domain signaling, therefore rrc layer is initiated RRC and is connected the process of setting up, it is characterized in that: UE side CC layer connects by the MM that whether receives the MM layer to be set up acknowledgement message MMCC_EST_CNF and judges that MM connects foundation and whether finishes, and, UE side CC layer judge MM connect set up finished after opening timing device T303.