CN1330200C

CN1330200C - Method for establishing radio chain

Info

Publication number: CN1330200C
Application number: CNB2005101032797A
Authority: CN
Inventors: 吴文志; 蔡文洲
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2005-09-22
Filing date: 2005-09-22
Publication date: 2007-08-01
Anticipated expiration: 2025-09-22
Also published as: CN1741642A

Abstract

The present invention discloses a method for establishing radio links. The method can prevent the radio link resource of a node B from being abnormally hung. Based on the principle of preferably establishing the radio link, the node B judges whether resource and a radio link have already been assigned for a UE or not according to an identifier for controlling a radio network controller to communicate according to a received radio link establishment request message; if yes, the resource or the radio link assigned for the UE is deleted; then the node B reassigns resource and establishes a radio link for the UE according to the radio link establishment request message. The method can effectively avoid the Node B radio link not being released after the radio link is hung, and can enhance users' call-through ratio.

Description

The method that a kind of Radio Link is set up

Technical field

The present invention relates to wireless telecommunication system, relate in particular to Node B (NodeB) subsystem in TD-SCDMA or the WCDMA system.

Background technology

25433 consensus standards according to the TD-SCDMA system, for public resource, for example sub-district, home cell, common signal channel, strict audit process is all arranged, NodeB reports radio network controller (RNC) by audit response message (AUDIT RESPONSE) or resource status Indication message (RESOURCE STATUSINDICATION) with public resource, after receiving, RNC compares with the public resource of oneself, if find that NodeB has inconsistent public resource, then initiate public resource deletion flow process.Therefore, can guarantee public resource on the NodeB and the consistency of RNC.For private resource, audit process has only the audit of Communication Control port (Communication Control Port), does not have the audit at Radio Link.Therefore in case communication abnormality takes place or other are unusual; for example; RNC does not receive that the Radio Link of NodeB sets up response message (RADIO LINK SETUPRESPONSE); perhaps NodeB does not receive the Radio Link deletion request message (RADIOLINK DELETION REQUEST) of RNC; then the Radio Link of NodeB will be suspended and can not discharge, but RNC does not know that but the Radio Link of NodeB is suspended.

When setting up article one Radio Link for subscriber equipment (UE), the process that Radio Link is set up is to set up resource for the new NodeB communication context (NodeB Communication Context) corresponding to this UE.Therefore, the air-link resources of NodeB is hung up unusually, can influence follow-up Radio Link and set up flow process.As shown in Figure 1, follow-up Radio Link is set up in the message, if RNC uses and original identical control radio network controller (CRNC) communication Context identifier (CRNCCommunication Context ID, corresponding one by one with NodeB Communication Context), NodeB will think that Radio Link that RNC sends sets up that CRNC communication Context identifier repeats in the request message, then return Radio Link and set up failed message, thereby cause the customer call failure.

Summary of the invention

The technical problem to be solved in the present invention provides the method that a kind of Radio Link is set up, and is hung up unusually and after can not being released, also can finishing follow-up Radio Link and set up flow process in the NodeB air-link resources.

In order to solve the problems of the technologies described above, the invention provides the method that a kind of Radio Link is set up, may further comprise the steps:

(a) radio network controller is set up request message to the Radio Link that Node B sends certain subscriber equipment;

(b) after Node B receives that described Radio Link is set up message, judge whether to this user equipment allocation resource and set up Radio Link, if, execution in step (c) then, otherwise execution in step (d);

(c) the Node B deletion is all resources of this user equipment allocation and all Radio Links, carries out next step then;

(d) Node B is set up request message according to described Radio Link, for the corresponding resource of this user equipment allocation and set up Radio Link.

Further, said method can have following characteristics: in the described step (b), described Node B is to set up according to described Radio Link whether control radio network controller communication Context identifier inquiry in the request message is local has corresponding Node B communication context to exist, thereby judges whether to this user equipment allocation resource and set up Radio Link.

The present invention can be applied to TD-SCDMA, WCDMA and there is the system of same problem in all, sets up priority principle by Radio Link, can avoid the NodeB Radio Link can not be released by unusual hang-up back effectively, thereby can improve user's call completion ratio.

Description of drawings

Fig. 1 is the schematic diagram that existing NodeB Radio Link is set up processing procedure;

Fig. 2 is the schematic diagram that the NodeB Radio Link of the inventive method is set up processing procedure;

Fig. 3 is the flow chart of embodiment of the invention method.

Embodiment

As shown in Figure 2, in an embodiment of the present invention, set up principle of priority according to Radio Link, after if NodeB receives and sets up request message from the Radio Link of RNC, find that the pairing UE of CRNC communication Context identifier exists in the message, promptly for this UE Resources allocation with set up Radio Link, then delete all resources and all Radio Links that distribute for this UE among the NodeB, this UE promptly resets, set up request message according to the Radio Link of receiving then, in NodeB, distribute corresponding resource and set up Radio Link, return Radio Link to RNC then and set up response for this UE.

Below in conjunction with accompanying drawing 3, the specific implementation step of the embodiment of the invention is described:

Step 100, RNC sends to NodeB the Radio Link of certain UE is set up request message, carries CRNC communication Context identifier in the message;

Step 101, NodeB receives that this Radio Link sets up request message, and obtains the parameters C RNC communication Context identifier in the message;

Step 102, whether NodeB exists according to the corresponding NodeB communication context of CRNC communication Context identifier inquiry, judges promptly whether corresponding UE exists, if there is execution in step 103; Otherwise, execution in step 104;

Step 103, all resources and all Radio Links that the NodeB deletion distributes for this UE, this UE promptly resets;

Step 104, NodeB sets up request message according to this Radio Link, for this UE distributes corresponding resource and sets up Radio Link.

RNC illustrates that initiating to have used certain CRNC communication Context identifier when Radio Link is set up this identifies pairing Radio Link and does not exist at RNC.If in NodeB, also there is the corresponding NodeB communication context of this sign, illustrate that then this air-link resources is hung up unusually, and corresponding UE is in improper communication state, so its all Radio Links of deletion in step 103, it is resetted, thereby discharge the air-link resources of hang-up.

Therefore, adopt Radio Link method for building up of the present invention can avoid the NodeB Radio Link after hanging up unusually, can not be released effectively, improve user's call completion ratio.The method that Radio Link of the present invention is set up also is applicable to the WCDMA system simultaneously, perhaps has other system of same problem.

Claims

1, a kind of method of Radio Link foundation may further comprise the steps:

2, the method for claim 1, it is characterized in that, in the described step (b), described Node B is to set up according to described Radio Link whether control radio network controller communication Context identifier inquiry in the request message is local has corresponding Node B communication context to exist, thereby judges whether to this user equipment allocation resource and set up Radio Link.