CN101262697A

CN101262697A - An inter-system switch control method for dual-mode user device

Info

Publication number: CN101262697A
Application number: CNA2007101302672A
Authority: CN
Inventors: 沙秀斌; 黄河; 张春国
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2007-03-05
Filing date: 2007-07-17
Publication date: 2008-09-10
Anticipated expiration: 2027-07-17
Also published as: CN101262697B

Abstract

The invention discloses an intersystem switching control method of double-mode user equipment, which comprises a start-up procedure of a radio quality variation measurement of a system: when UE is accessed or switched to a TD-SCDMA network, whether the UE is double-mode dual standby UE is determined based on UE capacity information, if yes, a poor radio quality judgment threshold of the system of the double-mode dual standby UE is obtained and the radio quality variation measurement of the system for the double-mode dual standby UE is started; a processing procedure in the poor radio quality of the system is also provided by the invention and comprises that: a poor radio quality event of the system is reported by the UE and a network side judges whether the UE is double-mode dual standby UE based on UE capacity information, if yes, a GSM network is notified to page the corresponding UE, and a wireless connection is established in the GSM network and then inter-system switching of the double-mode dual standby UE is started. The inter-system switching control method of the invention solves the problem that in the prior art, the intersystem switching of the double-mode dual standby UE is not supported.

Description

A kind of inter-system switch control method of dual-mode user device

Technical field

The present invention relates to wireless communication field, relate in particular to a kind of inter-system switch control method of dual-mode user device.

Background technology

At TD-SCDMA (Time Division-Synchronous Multiple Access, TD SDMA inserts) the networking initial stage, network covers continuously needs a progressive process, and the operator that builds TD-SCDMA often runs GSM (Global System for Mobilecommunication simultaneously, global system for mobile communications) network, therefore in a very long time, can cover to replenish the deficiency of the TD-SCDMA network coverage by GSM.For the continuity that guarantees that the user serves, user equipment (UE) (User Equipment) need switch between two systems according to network coverage situation.Switch the Target cell of system's measurements need UE to support 3GPP (3G (Third Generation) Moblie partner plan) protocol definition between traditional system, need switching command between the system of UE support 3GPP protocol definition simultaneously to determine to switch.

Because double-module double-standby UE has appearred in the complexity that the UE chip is realized, this type of UE is the back-up system measurements not, does not also support switching command between the system of 3GPP protocol definition, but can be simultaneously two network standbies and insert wherein any network.

But, this type of UE is not described at inter-system switch control method in the agreement at present, switch between the system of support double-module double-standby UE.Simultaneously, do not retrieve relevant patent yet and propose this method.

Summary of the invention

The technical problem to be solved in the present invention just provides a kind of inter-system switch control method of dual-mode user device, solves prior art and does not support the problem switched between the system of double-module double-standby UE.

In order to solve the problems of the technologies described above, the invention provides a kind of inter-system switch control method of dual-mode user device, comprising:

(1) the system wireless degradation is measured start-up course, comprises the steps:

(1.1) when user equipment (UE) inserts or cuts TD SDMA access TD-SCDMA network, if this UE carrying is that gsm system can loaded service, judge according to the UE ability information whether this UE is double-module double-standby UE, if then carry out next step;

(1.2) obtain double-module double-standby UE native system wireless quality difference decision threshold, start at double-module double-standby UE native system wireless quality difference measurements;

(2) processing procedure when the system wireless degradation comprises the steps:

(2.1) UE reports native system wireless quality assignment part, and network side judges according to the UE ability information whether UE is double-module double-standby UE, if carry out next step;

(2.2) the notice corresponding UE of GSM ICQ and set up wireless connections at the GSM network starts between the system of double-module double-standby UE and switches.

Further, in the described step (1.1), if judge that this UE is not double-module double-standby UE, then judge according to the UE ability information whether this UE is bimodulus UE, if, then obtain common bimodulus UE native system wireless quality difference decision threshold, start at common bimodulus UE native system wireless quality difference measurements.

Further, after UE inserts or cuts the TD-SCDMA network, also judged whether the GSM adjacent area in the described step (1.1),, judged just whether this UE is double-module double-standby UE if having.

Further, in the described step (2.1),, then carry out the wireless quality assignment part of handling common bimodulus UE if judge that UE is not double-module double-standby UE.

Further, described step (2.2) judges also whether the current loaded service of UE can directly be carried by the 2G system before carrying out, if, direct execution in step (2.2); If not, but then the mode of the modification RAB Modify by RAB is revised as the 2G loaded service with the current loaded service of UE, again execution in step (2.2).

Further, in the described step (2.2), notify the corresponding UE of GSM ICQ and set up wireless connections, comprising at the GSM network:

Radio network controller (RNC) is by reorientation message informing TD-SCDMA network, and the TD-SCDMA network is again by reorientation message informing moving exchanging center MSC, and MSC is by GSM ICQ UE.

The present invention proposes switch triggering method between the system of double-module double-standby UE, solve prior art and do not support the problem switched between the system of double-module double-standby UE.

Description of drawings

Fig. 1 is that the TD-SCDMA system wireless degradation of the embodiment of the invention is measured the startup flow chart;

System handles flow chart when Fig. 2 is the TD-SCDMA system wireless degradation of the embodiment of the invention.

Embodiment

For back-up system measurements not, do not support the double-module double-standby UE of switching command between the system of 3GPP protocol definition yet, need to adopt a kind of special switchover policy to come to switch between the realization system: the TD-SCDMA network is judged when this type of UE need switch in the gsm system, notify the corresponding UE of GSM ICQ and set up wireless connections at the GSM network, notice TD-SCDMA network discharges former connection after the GSM network link is set up successfully.Because therefore the handover delay long (calling establishment time delay that is equivalent to the GSM network) of this type of switching switches and need than handover trigger between common system earlier finish with regard to call drop to avoid not having enough time to switch.

The present invention can make double-module double-standby UE cover under the bad situation at the current service network wireless and in time switch in the another one network, comprising:

(1) the system wireless degradation is measured start-up course;

(2) processing procedure when the system wireless degradation.

When UE inserts or cuts the TD-SCDMA network, carry out (1); When native system wireless quality variation, carry out (2).

In (1), comprise the steps:

(1.1) insert or during incision TD-SCDMA network as UE,, judge according to the UE ability information whether this UE is double-module double-standby UE, if carry out (1.2) if this UE carrying is that gsm system can loaded service; Otherwise, carry out (1.3).

(1.3) judge according to the UE ability information whether this UE is bimodulus UE, if carry out (1.4); Otherwise, finish;

(1.4) obtain common bimodulus UE native system wireless quality difference decision threshold, start at common bimodulus UE native system wireless quality difference measurements;

In (2), comprise the steps:

(2.1) UE reports native system wireless quality assignment part, and network side judges according to the UE ability information whether UE is double-module double-standby UE, if carry out (2.2); Otherwise, execution in step (2.3);

(2.3) the wireless quality assignment part of the common bimodulus UE of processing.

Dual-mode terminal below in conjunction with TD-SCDMA and GSM illustrates concrete method for handover control from the application example that TD-SCDMA switches to the GSM triggering.

Fig. 1 is that TD-SCDMA system wireless degradation is measured start-up course, and detailed step is as follows:

Step 101, UE inserts or cuts certain sub-district of TD-SCDMA system;

Does step 102 judge that there is the GSM adjacent area this sub-district? if have, execution in step 104; Otherwise execution in step 103 finishes judgement this time.

Does step 104 judge that according to the ability information that UE reports UE is double-module double-standby UE? if, execution in step 105; Otherwise, execution in step 106;

Step 105 starts the inter-frequency measurement that has the 2D incident, and the thresholding of 2D incident is got the 2D thresholding of double-module double-standby terminal correspondence;

Step 106 starts the inter-frequency measurement that has the 2D incident, and the thresholding of 2D incident is got common 2D thresholding;

Wherein, the 2D incident is the measurement result of UE to 3G system wireless quality (current carrier frequency in the system); Briefly, if UE resides in the 3G system exactly, 3G mass of system variation, UE will report the 2D incident.3GPP supports this incident.

Processing procedure when Fig. 2 is TD-SCDMA system wireless degradation, detailed step is as follows:

Step 201, when the TD-SCDMA system wireless covered variation, UE can report the 2D incident;

Do you after step 202, system are received the 2D incident, judge that this UE is double-module double-standby UE? if, execution in step 203; Otherwise, execution in step 206.

Does step 203 judge that the current loaded service of UE can directly be carried by the 2G system? if, execution in step 205, otherwise, execution in step 204;

Step 204, by RAB Modify (Radio Access Bearer Modify, the modification of RAB is the signaling in the 3GPP) but mode the current loaded service of UE is revised as the 2G loaded service;

Step 205 is notified the corresponding UE of GSM ICQ and is set up wireless connections at the GSM network, switches between the system of startup double-module double-standby UE; Wherein notify the corresponding UE of GSM ICQ and set up wireless connections at the GSM network, be by reorientation message informing core net CN by radio network controller (RNC), CN is again by reorientation message informing moving exchanging center MSC, and MSC realizes by 2G ICQ UE;

Step 206 is handled the 2D incident of common bimodulus UE.

Wherein, present 2G business generally just is meant gsm service.But this changing method of the present invention is suitable for any different system, arrive PHS (Personal Handy-phone System such as TD-SCDMA, personal handhold telephone system), TD-SCDMA is to CDMA (code division multiple access access), as long as mobile phone and corresponding network support.

Claims

1. the inter-system switch control method of a dual-mode user device comprises:

2. method according to claim 1, it is characterized in that, in the described step (1.1), if judge that this UE is not double-module double-standby UE, then judge according to the UE ability information whether this UE is bimodulus UE, if, then obtain common bimodulus UE native system wireless quality difference decision threshold, start at common bimodulus UE native system wireless quality difference measurements.

3. method according to claim 1 is characterized in that, after UE inserts or cuts the TD-SCDMA network, has also judged whether the GSM adjacent area in the described step (1.1), if having, judges just whether this UE is double-module double-standby UE.

4. method according to claim 1 is characterized in that, in the described step (2.1), if judge that UE is not double-module double-standby UE, then carries out the wireless quality assignment part of handling common bimodulus UE.

5. method according to claim 1 is characterized in that, described step (2.2) judges also whether the current loaded service of UE can directly be carried by the 2G system before carrying out, if, direct execution in step (2.2); If not, but then the mode of the modification RAB Modift by RAB is revised as the 2G loaded service with the current loaded service of UE, again execution in step (2.2).

6. method according to claim 1 is characterized in that, in the described step (2.2), notifies the corresponding UE of GSM ICQ and set up wireless connections at the GSM network to comprise: