CN100442916C

CN100442916C - Method of setting up master call

Info

Publication number: CN100442916C
Application number: CNB2005100553091A
Authority: CN
Inventors: 程金能; 陈德; 杨平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2005-03-15
Filing date: 2005-03-15
Publication date: 2008-12-10
Anticipated expiration: 2025-03-15
Also published as: CN1835627A

Abstract

The present invention discloses a method for establishing a master call, and the method comprises: a. a UE which needs to establish a master call sends a radio resource control RRC connection establishment request to a service radio network controller SRNC through a random access channel RACH which already establishes a public channel. B. the SRNS sends an RRC establishment message carrying RRC connection establishment information to the UE through a forward link access channel FACH which already establishes a public channel. C. after the UE establishes RRC connection according to the RRC connection establishment information, the UE sends an RRC establishment completion message to the SRNS. d. after the UE and a core network CN carry out non-access stratum NAS signaling connection establishment and radio access bearing RAB assignation, the establishment of the master call of the UE is completed. The method can reduce the time of the establishment of the master call.

Description

A kind of method of setting up caller

Technical field

The present invention relates to setting up the technology of calling out under Wideband Code Division Multiple Access (WCDMA) (WCDMA) system or under TD SDMA (TD-SCDMA) system, particularly a kind of under the WCDMA system or set up the method for caller under the TD-SCDMA system.

Background technology

Along with development of wireless communication devices, WCDMA and TD-SCDMA have been subjected to paying close attention to widely as the third generation (3G) communication standard of main flow gradually.

At present, WCDMA or TD-SCDMA set up calling procedure as shown in Figure 1, this is set up the network entity that calling procedure relates to and comprises: initiate the WCDMA core net (CN) that the service wireless network controller (SRNC) of SRNS Serving Radio Network Subsystem (NodeBSRNS), the administration NodeBSRNS of Node B under subscriber equipment (UE) that caller sets up, the UE is connected with SRNC, its concrete steps are:

Step 100～step 104, Radio Resource control (RRC) connect sets up: UE initiates RRC control connection request (RRC CONNECTION REQUEST) by eating dishes without rice or wine to SRNC; SRNC sends to NodeBSRNS and eats dishes without rice or wine to connect the request of setting up (RADIO LINK SETUP REQUEST), NodeBSRNS set up with SRNC eat dishes without rice or wine be connected, promptly set up Radio Link, and send this request responding (RADIO LINK SETUP RESPONSE) to SRNC; Set up RRC between SRNC and the UE and connect (RRC CONNECTION SETUP), promptly set up the data transmission link of Iub interface between SRNC and the NodeBSRNS, set up and to finish back UE and connect by the RRC that sets up and send RRC foundation to SRNC and finish message (RRC CONNECTION COMPLETE).

Non-Access Stratum between step 105～step 112, UE and the CN (NAS) signaling connects to be set up: UE gives CN transparent transmission direct-sending message (INITIAL DIRECT TRANSFER) by SRNC, be connection management service request (CM SERVICE REQUEST), CN receives this message, sends to SRNC and receives this message (DIRECT TRANSFER); SRNC sends descending direct-sending message (DOWNLINK DIRECT TRANSFER) to UE, and UE returns to the up direct-sending message of SRNC (UPLINK DIRECT TRANSFER), and this process has been set up the channel of transmission NAS signaling; SRNC sends the NAS signaling to CN and sets up request (SETUP), CN sends to SRNC and carries out calling procedure (Call Proceeding), carry out call attempt between SRNC and the CN, promptly send DOWNLINK DIRECT TRANSFER to UE, UE receives the back and returns UPLINKDIRECT TRANSFER to SRNC, and this process has been set up the NAS Signalling exchange between UE and the CN.

Step 113～step 115, RAB (RAB) assignment process: CN send RAB assignment request (RAB ASSIGNMENT REQUEST) to SRNC, start the RAB assignment process; SRNC sends to NodeBSRNS and aerial the connection reconfigures preparation request (RADIO LINKRECONFIGURATION RREPARE), NodeBSRNS connect in the air reconfigure after, after promptly setting up the dedicated channel from CN to NodeBSRNS, send aerial connection to SRNC and reconfigure ready (RADIO LINK RECONFIGURATION READY), just can carry out data interaction between CN and the UE.

Step 116～step 117, connection processing procedure: CN send (ALERTING) message of reporting to the police to UE, and UE waits for the called UE response, in case called UE responds, CN sends to UE and connects (CONNECT) message, and caller is set up and finished.

Adopt the described process of Fig. 1 to set up caller, though can set up more safe and reliable caller, but the process that caller is set up is long: at first, connect at RRC and to set up the data transmission link that SRNC in the process need rebulid Iub interface between Radio Link and SRNC and the NodeBSRNS, and need carry out physical layer synchronization, could confirm that RRC connects and sets up successfully that this needed than the time of growing; Secondly, the NAS signaling between UE and CN connects in the process of setting up, and repeatedly carried out the mutual of direct-sending message between UE and the CN, and the mutual of each direct-sending message all needs the long time; At last, in the RAB assignment process, need rebulid the data transmission link of Radio Link, Iub interface and the data transmission link of Iu interface, this also needs the long time.

Therefore, how reducing the time that caller sets up becomes a problem demanding prompt solution.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of method of setting up caller, and this method can reduce the time that caller is set up.

According to above-mentioned purpose, technical scheme of the present invention is achieved in that

A kind of method of setting up caller, this method comprises:

A, the user equipment (UE) that will set up caller send radio resource control RRC for service wireless network controller SRNC by the Random Access Channel RACH that sets up common signal channel to connect the request of foundation;

B, the SRNC forward link access channel FACH by setting up common signal channel sends to UE and carries the RRC that RRC connects the information of setting up and set up message;

After c, UE connect the information of setting up and set up RRC and connect according to RRC, send RRC by RACH to SRNC and set up and finish message;

After carrying out Non-Access Stratum NAS signaling connection foundation and RAB RAB assignment between d, UE and the core net CN, the UE caller is set up and is finished.

Storage in advance allows to use common signal channel to send the cause value of message in SRNC;

In the described RRC connection of step a foundation request, carry and set up cause value;

Before step b, this method also comprises:

SRNC judges that this RRC connects and carries in the request of foundation whether set up cause value be that the permission of storing in advance uses common signal channel to send the cause value of message, if, execution in step b; Otherwise, send to UE by dedicated channel and to carry the RRC that RRC connects the information of setting up and set up message.

By dedicated channel be to the process that UE transmission RRC sets up message:

Reserve Radio Link when setting up communication system cell, storage in advance allows to use this to reserve the cause value that Radio Link sends message in SRNC;

SRNC judges that this RRC connects and carries in the request of foundation whether set up cause value be that the permission of storing in advance uses the Radio Link of this reservation to send the cause value of message, if send RRC by the Radio Link of reserving to UE and set up message; Otherwise SRNC sets up dedicated wireless link, and the dedicated wireless link of passing through to be set up sends RRC to UE and sets up message.

The process of carrying out NAS signaling connection foundation between described UE of steps d and the CN is:

UE gives CN transparent transmission direct-sending message INITIAL DIRECTTRANSFER by SRNC on RACH;

CN sends to SRNC by FACH and receives direct-sending message response DIRECT TRANSFER, and SRNC sends descending direct-sending message DOWNLINK DIRECTTRANSFER by FACH to UE.

The described RAB assignment process of steps d is:

When setting up communication system cell, reserve Radio Link and with the data transmission link of its binding;

CN sends RAB task requests ASSIGNMENT REQUEST to SRNC;

SRNC sends to CN and sets up request ESTABLISH REQUEST;

CN selects a data transmission link of being reserved according to this request, sends to set up to SRNC and finishes message ESTABLISH CONFIRM;

SRNC sends for the Node B SRNS Serving Radio Network Subsystem NodeBSRNS under the UE and eats dishes without rice or wine to connect selection request RADIO LINK SELECT REQUEST;

NodeBSRNS according to this request select one with Radio Link that selected reserved data transmission link is bound mutually after, NodeBSRNS sends to eat dishes without rice or wine to connect to SRNC and selects to respond RADIO LINKSELECT RESPONSE;

SRNC sets up message RADIO BEARER SETUP for UE transparent transmission air interface by NodeBSRNS on FACH;

UE sends air interface foundation to SRNC by selected Radio Link and finishes message RADIOBEARER SETUP COMPLETE;

SRNC sends the RAB task to CN and finishes response RAB ASSIGNMENT RESPONSE.

Before the described UE caller foundation of steps d was finished, this method also comprised:

The DOWNLINK DIRECT TRANSFER that CN carries warning message ALERTING and link information CONNECT for the UE transparent transmission by SRNC on selected Radio Link, UE wait for the called UE response, and after CN received the called UE response, CN sent CONNECT to UE.

From such scheme as can be seen, method provided by the invention since RACH in common signal channel with FACH or on the dedicated channel of reserved resource, set up RRC and be connected, do not need to set up the data transmission link of Radio Link and Iub interface, reduced RRC connection setup time; Method provided by the invention has reduced the NAS Signalling exchange between UE and the CN because CM SERVICE message and SETUP message are merged into an IMMEDIDATESETUP, has reduced between UE and the CN NAS signaling connection setup time; Method provided by the invention is used reserved resource, on the dedicated channel of RAB assignment in reserved resource, does not need to set up the data transmission link of Radio Link, Iub interface and the data transmission link of Iu interface, has reduced RAB connection setup time; Method provided by the invention increases connecting the support of pattern, promptly supports ALERT pattern or demand working pattern, and wherein demand working pattern does not need network to return ALERTING and CONNECT message, has reduced call set-up time yet.Therefore, method provided by the invention has reduced the main time of exhaling foundation.

Description of drawings

Fig. 1 sets up calling procedure figure for WCDMA in the prior art or TD-SCDMA's;

Fig. 2 sets up the method flow diagram of caller for the present invention;

Fig. 3 sets up flow chart for the caller that the present invention adopts dedicated channel in the reserved resource to carry out the connection of RRC.

Embodiment

In order to make the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is further elaborated.

The present invention is in order to reduce the main time of exhaling foundation, reserved resource in WCDMA or TD-SCDMA in advance, promptly when setting up the sub-district of WCDMA or TD-SCDMA, be provided with some dedicated channels respectively as the transmission of radio links Radio Resource, as the data transmission link transmission CN of Iu interface and the terrestrial links resource between the SRNC and as the data transmission link transmission SRNC of Iub interface and the terrestrial links resource between the NodeBSRNS.To bind as the dedicated channel of the data transmission link of Iu interface with as the dedicated channel of the data transmission link of Iub interface, become the data transmission resources link of a complete reservation between from CN to UE.The present invention also will this complete reservation data transmission link and the Radio Link of reservation bind.

The present invention has also optimized caller and has set up flow process in order to reduce the time that caller is set up: 1, connect the process of setting up at RRC, use the Random Access Channel (RACH) in the common signal channel to carry out being connected of RRC with forward link access channel (FACH); 2, the connection of the NAS signaling between UE and CN is set up in the process, reduces the number of times of mutual direct-sending message between UE and the CN, and CM SERVICEREQUEST message and SETUP message are merged into an immediate assignment message (IMMEDIDATESETUP).

Fig. 2 sets up the method flow diagram of caller for the present invention, and its detailed process is:

RRC connects the process of setting up:

Step 200, UE send RRC CONNECTION REQUEST to SRNC, and this message sends at the RACH that has set up;

The parameter that this message is carried has: initial UE identifies, sets up cause value and metrical information (can select to carry or do not carry), wherein cause value must increase and will set up main reason of exhaling fast, as " PoC (PTT) individual call caller foundation " and " PTT group calling foundation " etc.;

Step 201, SRNC send RRC CONNECTION SETUP to UE, and this message sends at the FACH that has set up, and indication UE sets up RRC and connects;

The parameter that this message is carried has: initial UE sign, wireless network temporarily identify (RNTI), ability update request and RRC are connected and be based upon on which bar channel; This RRC connects that to be based upon on which bar channel be that cause value according to RRC CONNECTION REQUEST carries is determined, RRC can be connected be based upon on common signal channel, reserved resource pond channel or the dedicated channel; For example: cause value is " PTT group calling foundation ", and then definite this RRC connection is based upon common signal channel and is carried at RRCCONNECTION SETUP and sends to UE;

Step 202, UE according to RRC CONNECTION SETUP set up RRC connect finish after, send RRC CONNECTION COMPLETE by RACH to SRNC;

The parameter that this message is carried has: the integrity information of UE, enciphered message and wireless access capability.

NAS signaling between UE and the CN connects to be set up:

Step 203, UE give CN transparent transmission INITIAL DIRECT TRANSFER by SRNC, and this message sends at the RACH that has set up, and this message is the IMMEDIDATE SETUP that CM SERVICE REQUEST message and SETUP message are merged into;

The parameter that this message is carried has: type of service;

Step 204～step 205, CN send DIRECT TRANSFER to SRNC, and SRNC sends DOWNLINK DIRECT TRANSFER to UE, and this message sends on the FACH that has set up;

The parameter that this message is carried has: Call Proceeding.

The RAB assignment process:

Step 206, CN send RAB ASSIGNMENT REQUEST to SRNC, start the RAB assignment process;

The parameter that this message is carried has: RAB parameter, user's surface model, transport address and Iu interface transmission contact;

Step 207, SRNC send the request of setting up (ESTABLISH REQUEST) to CN, this message is ATM self adaptive transmission agreement (Q.AAL2) message, the second class ATM Adaptation Layer AAL2 data transmission link between SRNC and the CN is set up in request, the parameter that this message is carried has the AAL2 binding logo, is about to the binding logo of bearer context for data transmission and RAB binding;

Step 208, CN select the data transmission link of a reservation according to this request, after setting up the AAL2 data transmission link and finishing, send foundation to SRNC and finish message (ESTABLISHCONFIRM), this message is Q.AAL2 message, and indication AAL2 data transmission link is set up;

Step 209, SRNC send to NodeBSRNS and eat dishes without rice or wine to connect the request (RADIO LINKSELECT REQUEST) of selecting, this message is NodeB application protocol (NBAP) interface message, the Radio Link of reservation is selected in request from reserved resource, this Radio Link must and be selected bind as a reserved resource link of data transmission link;

Whether bind and to judge from the binding logo of AAL2 data transmission link;

Step 210, NodeBSRNS ask to select the Radio Link of a reservation according to this, and NodeBSRNS sends to eat dishes without rice or wine to connect to SRNC and selects to respond (RADIO LINK SELECTRESPONSE), and this message is the NBAP interface message;

The parameter that this message is carried has: the Radio Link of selected reservation;

Step 211, SRNC set up message (RADIOBEARER SETUP) for UE transparent transmission air interface by NodeBSRNS, this message sends on the FACH that has set up, require UE to set up RAB, the parameter that this message is carried has: TFS Transport Format Set and transformat merge collection;

Step 212, UE send air interface foundation to SRNC and finish message (RADIO BEARERSETUP COMPLETE), and this message sends on the Radio Link of having reserved, and indication UE has set up RAB;

Step 213, SRNC send the RAB task to CN and finish response (RAB ASSIGNMENTRESPONSE), and this message is the RANAP interface message, response RAB ASSIGNMENTREQUES;

Step 214～step 215, CN give UE transparent transmission DOWNLINK DIRECTTRANSFER by SRNC, this message sends on the Radio Link of having set up, carry ALERTING and CONNECT, UE waits for the called UE response, in case called UE response, CN sends CONNECT to UE, and caller is set up and finished.

For the PTT business, the process that caller is set up can be supported two kinds of patterns: a kind of is the pattern of directly connecting, and promptly execution in step 215 is not set up process with regard to having finished caller; Another kind is the ALERTING pattern, promptly needs execution in step 215 just can finish whole process.

The present invention sets up in the process in the RRC connection, not only can use the RACH in the common signal channel to carry out being connected of RRC with FACH, but also can use the dedicated channel in the reserved resource to carry out the connection of RRC, as shown in Figure 3: Fig. 3 sets up flow chart for the caller that the present invention adopts dedicated channel in the reserved resource to carry out the connection of RRC:

Step 300, UE send RRC CONNECTION REQUEST to SRNC;

The cause value that step 301, SRNC carry according to this request is determined to the UE assigned with dedicated channel, sends RADIO LINK SELECT REQUEST to NodeBSRNS, and this message is the NBAP interface message, and the dedicated channel of reservation is selected in request from reserved resource;

The dedicated channel that step 302, NodeBSRNS reserve according to this request selection sends RADIO LINK SELECT RESPONSE to SRNC, and this message is the NBAP interface message;

Step 303, SRNC send RRC CONNECTION SETUP to UE, and this message sends on the dedicated channel of having set up, and indication UE sets up RRC and connects;

Step 304, UE according to RRC CONNECTION SETUP set up RRC connect finish after, send RRC CONNECTION COMPLETE to SRNC.

UE that caller is set up and the NAS signaling between the CN connect sets up process and the RAB assignment process is consistent with the described method of Fig. 2.

The described method flow of Fig. 2 of the present invention or Fig. 3 not only can be applied in the WCDMA system, also can be applied in the TD-SCDMA system.

The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims

1, a kind of method of setting up caller is characterized in that, this method comprises:

2, the method for claim 1 is characterized in that, storage in advance allows to use common signal channel to send the cause value of message in SRNC;

Before step b, this method also comprises:

3, method as claimed in claim 2 is characterized in that, by dedicated channel to the process that UE transmission RRC sets up message is:

4, the method for claim 1 is characterized in that, the process of carrying out NAS signaling connection foundation between described UE of steps d and the CN is:

5, the method for claim 1 is characterized in that, the described RAB assignment process of steps d is:

CN sends RAB task requests ASSIGNMENT REQUEST to SRNC;

SRNC sends to CN and sets up request ESTABLISH REQUEST;

SRNC sends the RAB task to CN and finishes response RAB ASSIGNMENT RESPONSE.

6, method as claimed in claim 5 is characterized in that, before the described UE caller foundation of steps d was finished, this method also comprised: