CN100388845C

CN100388845C - Iu link releasing method for G3 mobile communication system

Info

Publication number: CN100388845C
Application number: CNB2005100660089A
Authority: CN
Inventors: 周烜; 杨阳; 张健; 王之曦
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2005-04-19
Filing date: 2005-04-19
Publication date: 2008-05-14
Anticipated expiration: 2025-04-19
Also published as: CN1856151A

Abstract

The present invention particularly discloses an Iu connecting and releasing method for a 3G mobile communication system, which relates to the field of establishing and releasing sessions between a wireless access network and a core network in the 3G mobile communication system. The Iu connecting and releasing method of the present invention comprises the following steps: step 1. setting a timer after an RNC device receives Iu connecting and releasing command messages from a CN device, and waiting the overtime (OT for short) of the timer; step 2. making the RNC device respond Iu releasing messages to the CN device and release Iu connection with the CN device after the timer is overtime (OT for short); step 3. making the RNC device continues following processes. The present invention can ensure that a UE device can normally receive all messages in turn and further ensure the stability of the integral running performance of the 3G system.

Description

A kind of Iu that is used for 3-G (Generation Three mobile communication system) connects method for releasing

Technical field

The present invention relates to 3-G (Generation Three mobile communication system) (3G) wireless access network and core net traffic and set up and the release field, specifically, relate to a kind of Iu that is used for 3-G (Generation Three mobile communication system) and connect method for releasing.

Background technology

In the 3-G (Generation Three mobile communication system), comprise WCDMA (Wideband Code DivisionMultiple Access) system, and TD-SCDMA (Time Division-Synchronous CodeDivision Multiple Access) system etc.With WCDMA system related protocol is example, according to user equipment (UE) (User Equipment) initiate the position more new technological process carry out case study.

In 3-G (Generation Three mobile communication system) WCDMA system, UE equipment is initiated position renewal basic procedure and is described below:

UE equipment sends Radio Resource connection request (RRC CONNECTION REQUEST) message to wireless network control RNC (Radio Network Controller) equipment;

RNC equipment sends Radio Resource by descending public control logic channel to UE equipment and connects foundation (RRC CONNECTION SETUP) message;

UE equipment sends Radio Resource connection foundation by up Dedicated Control Channel to RNC equipment and finishes (RRC CONNECTION SETUP COMPLETE) message;

UE equipment sends up initial direct-sending (INITIAL DIRECT TRANSFER) message, and is former because position updating request (LOCATION UPDATE REQUEST).RNC equipment receive set up after this message with core net CN (Core Net) equipment between Iu be connected, and with this forwards to CN equipment;

CN equipment sends descending direct transferring (DOWNLINK DIRECT TRANSFER) message to RNC equipment, and is former because acceptance (LOCATION UPDATE ACCEPT) is upgraded in the position.RNC equipment is given UE equipment with this forwards;

Following steps are please referring to Fig. 1.

CN equipment sends Iu to RNC equipment and connects release command (IU RELEASE COMMAND) message;

RNC equipment is responded Iu to CN equipment and is discharged (IU RELEASE) message, and release is connected with the Iu of CN equipment room;

RNC equipment sends Radio Resource to UE equipment and connects release (RRC CONNECTIONRELEASE) message;

UE equipment is responded Radio Resource connection release to RNC equipment and is finished (RRC CONNECTIONRELEASE COMPLETE) message, and RNC equipment discharges and the device-dependent whole resources of this UE after receiving this message.So far more new technological process end of position.

Describe as can be seen from above-mentioned flow process, UE equipment is initiated in the position updating process, and CN equipment is upgraded descending direct transferring (DOWNLINK DIRECTTRANSFER) message and the CN equipment accepting to cause to the transmission of RNC equipment and sends not time interval restriction between Iu connection release command (IURELEASE COMMAND) message process to RNC equipment by the position.Under certain condition triggers, can cause the UE device location to upgrade failure like this:

User's face of triggering one, RNC equipment passes through RB3 (the 3rd radio bearer of signaling traffic in same transmission dispatching cycle (40 milliseconds), adopt the AM affirmation mode) send descending direct-sending message and send the Radio Resource connection release message to UE equipment to UE equipment by RB1 (the 1st radio bearer of signaling traffic adopts the UM Unacknowledged Mode).If the priority ratio RB3 height of RNC equipment disposition RB1, then RNC equipment preferentially sends the Radio Resource connection release message to UE equipment;

Even it is low to trigger the priority ratio RB3 of two RNC equipment disposition RB1, because RB3 is the AM affirmation mode, consider the situation of path loss and re-transmission, UE equipment might at first be received the Radio Resource connection release message on RB1.

The result of above-mentioned two kinds of triggerings can cause UE equipment at first to receive the Radio Resource connection release message on RB1, and responds Radio Resource connection Release complete to RNC equipment.In case RNC equipment is received Radio Resource and is connected Release complete, can discharge device-dependent all resources with this UE.If constantly, wait for still at RB3 up-downgoing direct-sending message being scheduled that can cause RNC equipment to abandon this descending direct-sending message, UE equipment can't receive the position and upgrade the descending direct-sending message of accepting, so the UE device location upgrades failure at this.

Do not consider the problems referred to above in the 3G system related protocol at present, do not have effective mechanism to avoid the generation of the problems referred to above.When above-mentioned situation took place, the UE device location upgraded failure and directly causes UE equipment can't initiate various follow-up business, influences the access performance of system greatly.Further, can cause this UE equipment constantly to initiate position updating process, influence the overall operation performance of system because the UE device location upgrades failure.

The problem that foregoing description more exists in new technological process and the flow process at the position of UE equipment in the WCDMA system.For other flow process that UE equipment in the WCDMA system is initiated, also there is same problem in the Routing Area Update flow process as UE equipment.

Similarly, there is same problem in the operation flow of UE equipment in the TD-SCDMA system, just repeats no more here.

Summary of the invention

Technical problem to be solved by this invention provides a kind of Iu that is used for 3-G (Generation Three mobile communication system) and connects method for releasing, guarantee that UE equipment can normally receive all message according to the order of sequence, can make with the device-dependent miscellaneous service flow process of UE and normally carry out, thereby guarantee overall operation performance stable of 3G system.

For solving the problems of the technologies described above, it is as follows to the invention provides scheme:

A kind of Iu that is used for 3-G (Generation Three mobile communication system) connects method for releasing, comprises the steps:

1.RNC equipment receives that the Iu of CN equipment connects release command (Iu Release Command) message, timer T is set, and waiting timer is overtime;

Timer T overtime after, RNC equipment is responded Iu to CN equipment and is discharged (Iu Release) message, and release is connected with the Iu of CN equipment room;

3.RNC equipment continues follow-up flow process.

10, CN equipment need timer T is set earlier, and waiting timer be overtime when RNC equipment sends Iu connection release command (Iu Release Command) message;

20, timer T overtime after, CN equipment sends Iu to RNC equipment and connects and discharge (Iu Release) message, and release is connected with the Iu of RNC equipment room;

30, CN equipment continues follow-up flow process.

Compared with prior art, the invention has the advantages that:

The present invention is by a kind of delay trigger method, guarantee the normal various message of acceptance according to the order of sequence of UE equipment, guarantee the success of UE facility registration flow process, avoided having significantly improved the overall operation performance of UE facility registration success rate and 3G system because factors such as RNC equipment RB (Radio Bearer) priority parameters configuration, environment cause UE can't correctly accept the situation of all message.

Technical problem to be solved by this invention, characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.

Description of drawings

Fig. 1 is in the present WCDMA system registry flow process, handles CN equipment and sends the schematic diagram that Iu connects release command to RNC equipment.

Fig. 2 is the schematic diagram that Iu of the present invention connects method for releasing.

Fig. 3 is the schematic diagram that another Iu of the present invention connects method for releasing.

Embodiment

With reference to Fig. 2, be the schematic diagram that Iu of the present invention connects method for releasing.

A kind of Iu that is used for 3-G (Generation Three mobile communication system) connects method for releasing, it is characterized in that comprising the steps:

Step 1: RNC equipment receives that the Iu of CN equipment connects release command (Iu Release Command)

Message is provided with timer T _IuRelease, and waiting timer is overtime;

Step 2: timer T _IuReleaseAfter overtime, RNC equipment is responded Iu to CN equipment and is discharged (IuRelease) message, and release is connected with the Iu of CN equipment room;

Step 3: RNC equipment continues follow-up flow process.

Timer T _IuReleaseDuration is a RNC equipment configurable parameter, for example, adopts 100 milliseconds of default values.

In the WCDMA system, UE equipment is initiated the position and is upgraded basic procedure.Comprising following steps:

Step 1: UE equipment sends Radio Resource connection request message to RNC equipment;

Step 2: RNC equipment sends the Radio Resource connection by descending public control logic channel to UE equipment and sets up message;

Step 3: UE equipment sends the Radio Resource connection setup complete message by up Dedicated Control Channel to RNC equipment;

Step 4: UE equipment sends up initial direct-sending message, and is former because position updating request.RNC equipment receive set up after this message with CN equipment between Iu be connected, and with this forwards to CN equipment;

Step 5: CN equipment sends descending direct-sending message to RNC equipment, and is former because acceptance is upgraded in the position.RNC equipment is given UE equipment with this forwards;

Step 6: CN equipment sends Iu to RNC equipment and connects release command message;

Step 7: RNC equipment receives that the Iu of CN equipment connects release command message, is provided with timer T _IURelease, and waiting timer is overtime;

Step 8: T _IUReleaseTimer expiry, RNC equipment is responded the Iu release message to CN equipment, and release is connected with the Iu of CN equipment room;

Step 9: RNC equipment sends Radio Resource to UE equipment and connects release (RRCCONNECTION RELEASE) message;

Step 10: UE equipment is responded Radio Resource to RNC equipment and is connected Release complete, and RNC equipment discharges and the device-dependent whole resources of this UE after receiving this message.So far the position more new technological process successfully finish.

With reference to Fig. 3, be the schematic diagram that another kind of Iu of the present invention connects method for releasing.

Step 1, CN equipment need be provided with timer T earlier when RNC equipment sends Iu connection release command (Iu ReleaseCommand) message _IuRelease, and waiting timer is overtime;

Step 2, timer T _IuReleaseAfter overtime, CN equipment sends Iu to RNC equipment and connects release (IuRelease) message, and release is connected with the Iu of RNC equipment room;

Step 3, CN equipment continue follow-up flow process.

Timer T _IuReleaseDuration is a CN equipment configurable parameter, for example, adopts 100 milliseconds of default values.

A kind of Iu that is used for 3-G (Generation Three mobile communication system) connects method for releasing, be not restricted to listed utilization in specification and the execution mode, it can be applied to various suitable the present invention's field fully, for those skilled in the art, can easily realize additional advantage and make amendment, therefore under the situation of the spirit and scope of the universal that does not deviate from claim and equivalency range and limited, the examples shown that the present invention is not limited to specific details, representational equipment and illustrates here and describe.

Claims

1. an Iu who is used for 3-G (Generation Three mobile communication system) connects method for releasing, it is characterized in that comprising the steps:

Step 1: wireless network control apparatus receives that the Iu of equipment of the core network connects release command message, establishes

Put timer, and waiting timer is overtime;

Step 2: behind the timer expiry, wireless network control apparatus is responded the Iu release message to equipment of the core network, and release is connected with Iu between equipment of the core network;

Step 3: wireless network control apparatus continues follow-up flow process.

2. Iu according to claim 1 connects method for releasing, it is characterized in that described timer duration is the wireless network control apparatus configurable parameter.

3. Iu according to claim 1 connects method for releasing, it is characterized in that described timer duration default value adopts 100 milliseconds.

4. an Iu who is used for 3-G (Generation Three mobile communication system) connects method for releasing, it is characterized in that comprising the steps:

Step 1: equipment of the core network need timer is set earlier, and waiting timer be overtime when wireless network control apparatus sends Iu connection release command message;

Step 2: behind the timer expiry, equipment of the core network sends the Iu connection release message to wireless network control apparatus, and release is connected with Iu between wireless network control apparatus;

Step 3: equipment of the core network continues follow-up flow process.

5. Iu according to claim 4 connects method for releasing, it is characterized in that described timer duration is the equipment of the core network configurable parameter.

6. Iu according to claim 4 connects method for releasing, it is characterized in that described timer duration default value adopts 100 milliseconds.