CN101370311A - Method for expanding switching capacity between strange systems - Google Patents
Method for expanding switching capacity between strange systems Download PDFInfo
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- CN101370311A CN101370311A CNA2008102236278A CN200810223627A CN101370311A CN 101370311 A CN101370311 A CN 101370311A CN A2008102236278 A CNA2008102236278 A CN A2008102236278A CN 200810223627 A CN200810223627 A CN 200810223627A CN 101370311 A CN101370311 A CN 101370311A
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Abstract
The invention discloses a method for expanding switching capacity between heterogeneous system. Wireless network controller RNC of third generation mobile communication 3G system determines switching completion of user device UE, redistributes service wireless network temporary identifier for UE, constituting new universal mobile communication system wireless access network temporary identifier U-RNTI with predistributed service wireless network controller identifier, sends new U-RNTI to UE;UE and RNC updates self-stored U-RNTI by utilizing new U-RNTI. That RNC redistributes S-RNTI for UEincreases simultaneous on-line UE number which same RNC can accommodate for switching 2G system to 3G system, largely enhance RNC accommodation capability and RNC switching capacity, promotes UE usage quality in mobile service.
Description
Technical field
The present invention relates to the communication system handoff technique, particularly a kind of method of expanding switching capacity between strange systems.
Background technology
For adapting to the needs of people's work and life, more existing subscriber equipment (UE, UserEquipment) all possesses the radio access technologies (RAT that has by one or more types, Radio Access Technology) comes the ability that communicates with other UE or mobile communications network or core network, and this UE that possesses at least two kinds of RAT type of capability is referred to as " double mode " UE, for example, " single deck tape-recorder is two to be treated " mobile phone, " double-card dual-standby " mobile phone.The example of two kinds of dissimilar RAT that UE has comprises:
(1), global mobile communication (GSM, Global System for Mobile communications) system and follow-on system thereof, for example, general packet radio service (GPRS, General Packet RadioService) system;
(2) 3G (Third Generation) Moblie (3G) system, TD SDMA (TD-SCDMA for example, Time Division-Synchronous Code Division Multiple Access) system, wherein, comprise universal mobile telecommunications system wireless access network (UTRAN, Universal MobileTelecommunication System Terrestrial Access Network) system.
After the UE start, in communication process, may be among continuous the moving, move to another sub-district from a sub-district, if the mobile communications network of two sub-districts or core network difference need the radio access system of UE from current use, for example, gsm system/gprs system, switching enters next radio access system, for example, and the TD-SCDMA system.The condition of switching can be that the quality of the Radio Link of the UE radio access system (gsm system/gprs system) that detects current use drops to and is lower than predefined level, and/or being raised to qualitatively of the Radio Link of next radio access system (TD-SCDMA system) is higher than a certain predefined level.Be that example describes with gprs system and UTRAN system respectively below.
When carrying out the switching of UE from gprs system to the UTRAN system, the UTRAN system need send UTRAN Radio Resource control (RRC to UE through gprs system, Radio ResourceControl) message promptly switches to UTRAN command messages (HandOver To UTRAN Command) message.In order to obtain enough good performance of handoffs, send HandOver To UTRAN Command message by adopting in the unsegmented GPRS radio open message to UE on the one hand; On the other hand, because the width of gprs system wireless air interface signaling receive window is limited, by shortening the length of HandOverTo UTRAN Command message, both can reduce propagation delay time, can reduce the wait time delay that the gprs system receive window receives the wireless air interface signaling again, thereby improve performance of handoffs.
Below the length of HandOver To UTRAN Command message that the UTRAN system shorten is sent carry out brief description.
At gprs system in the handoff procedure of UTRAN system, radio network controller (the RNC of UTRAN system, Radio Network Control) distributes the service radio network temporary identifier (S-RNTI that length is 10 bits (bit) for UE, Serving-Radio Network TemporaryIdentity) S-RNTI 2, again the service wireless network controller identifier (Serving RNC Identity) of S-RNTI2 and 12bits is formed the short UTRAN Radio Network Temporary Identifier symbol (U-RNTI Short) of 22bits, so that reduce the wait time delay that the gprs system receive window receives the wireless air interface signaling.Then, the UTRAN system is carried at U-RNTI Short in the HandOver ToUTRAN Command message, passes through UE by gprs system.
Simultaneously, RNC is by mending 0 the mode of filling out in the highest 10bits position of the S-RNTI2 that distributes for UE, obtain the S-RNTI of a complete 20bits, be used for being identified at the UE relevant information of service wireless network controller SRNC, this S-RNTI is unique in SRNC, it is the number that S-RNTI is identified at UE online when can hold in the same RNC, and form the U-RNTI of 32bits with SRNC Identity, U-RNTI is used to identify the affiliated SRNC of UE, and the sign (numbering) of UE in SRNC.
UE receives HandOver To UTRAN Command message, therefrom obtain U-RNTI Short, adopt the mode identical with RNC, the S-RNTI that 0 the mode of filling out obtains 20bits is mended in the highest 10bits position of the S-RNTI2 that is about to obtain, the U-RNTI that forms 32bits then with SRNC Identity, and reply and to switch to UTRAN and finish (HandOver To UTRAN Complete) message and give RNC, thereby realize the switching of UE from gprs system to the UTRAN system.
Fig. 1 switches to the method flow schematic diagram of UTRAN system from gprs system for prior art UE, referring to Fig. 1, comprise UE, base station sub-system (BSS, Base station subsystem), (the MSC of mobile switching centre, Mobile Switching Center), Serving GPRS Support Node (SGSN, Serving GPRS Support Node), media gateway (MGW, Media GateWay), RNC and contact B (Node B), wherein, RNC and Node B belong to the UTRAN system of TD-SCDMA, MSC, SGSN, MGW belongs to the core net (CN in the mobile communication, Core Network), both can realize the function of 2G and 3G core net simultaneously, and also can realize the function of 2G and 3G core net respectively, this flow process comprises:
Step 101, BSS carries out switch decision;
In this step, the quality of Radio Link that UE detects the radio access system of current use drops to and is lower than predefined level, and/or, being raised to qualitatively of the Radio Link of next radio access system is higher than a certain predefined level, reporting measurement reports is given BSS, after BSS receives measurement report, carry out switching decision (Inter-RAT HandOver Decision) between RAT, judge and switch.
Step 102, BSS sends handoff request (HandOver Required) message to MSC;
Step 103, MSC receives HandOver Required message, carries out respective handling, sends to MGW by SGSN and prepares to switch (Prepare HandOver) message;
In this step, MSC obtains Target Cell Identifier according to the HandOver Required message and the configuration that receive, produces Prepare HandOver message.
Step 104, MGW receives Prepare HandOver message, sends migration request (Relocation Request) message to RNC;
Step 105, RNC and Node B set up Radio Resource;
In this step, after RNC receives Relocation Request message, the S-RNTI 2 that distributes 10bits for UE, and with S-RNTI 2 and SRNC Identity composition U-RNTI Short, generate HandOver To UTRAN Command message, and U-RNTI Short is carried in this message, simultaneously, RNC is by mending 0 the mode of filling out in the highest 10bits position of the S-RNTI2 that distributes for UE, obtain the S-RNTI of a complete 20bits, and form the U-RNTI of 32bits and the U-RNTI that storage is formed with SRNC identity, like this, in the UTRAN system, just can use U-RNTI; Then, RNC carries out wireless resource allocation and foundation in conjunction with self wireless resource allocation algorithm and Node B, and is last, and RNC generates migration request and confirms (Relocation Request Ack) message, carries HandOverTo UTRAN Command message.
Step 106, RNC returns Relocation Request Ack message to MGW, carries HandOver To UTRAN Command message;
In this step, RNC sends RelocationRequest Ack message to MGW after finishing the Radio Resource preparation.
Step 107, MGW receives Relocation Request Ack message, returns to MSC by SGSN and prepares handoff response (Prepare HandOver Response) message;
In this step, after MGW receives Relocation Request Ack message, construct PrepareHandOver Response message, and return Prepare HandOverResponse message to MSC, carry HandOver To UTRAN Command message by SGSN.
Step 108, MSC receives Prepare HandOver Response message, sends switching command (HandOver Command) message to BSS;
In this step, MSC receives Prepare HandOver Response message, sends HandOver Command message to BSS, and notice BSS has been ready to wireless switchable resource.
Step 109, BSS receives HandOver Command message, sends HandOver ToUTRAN Command message to UE;
In this step, BSS receives HandOver Command message, obtains the HandOver To UTRAN Command message that wherein comprises, and is sent to UE;
Step 110, UE receives HandOver To UTRAN Command message, switches to RNC;
In this step, UE receives HandOver To UTRAN Command message, obtain the S-RNTI2 that comprises in the message, and the highest 10bits position of the S-RNTI2 of 10bits mended the S-RNTI that 0 the mode of filling out obtains 20bits, and then form the U-RNTI of 32bits with the SRNC Identity that obtains, insert the UTRAN system according to assigned radio resource.
Step 111, RNC sends migration to MGW and triggers (Relocation Detect) message;
In this step, RNC sends RelocationDetect message to MGW after perceiving UE access UTRAN system.
Step 112, UE replys HandOver To UTRAN Complete message to RNC, and RNC receives HandOver To UTRAN Complete message, sends migration to MGW and finishes (RelocationComplcte) message;
In this step, UE replys HandOver To UTRAN Complete message to RNC, and notice RNC switching is finished, thereby realizes the switching of UE from gprs system to the UTRAN system, and uses U-RNTI in the UTRAN system;
RNC receives HandOver To UTRAN Complete message, knows to switch and finishes, and sends Relocation Complete message to MGW, and notice MGW switching is finished.
Step 113, MGW receives Relocation Complete message, sends to BSS;
Step 114, BSS receives Relocation Complete message, discharges gprs system side related resource.
In this step, after the base station controller among the BSS (BSC, Base Station Controller) receives Relocation Complete message, discharge the relevant Radio Resource of gprs system side.
So far, switching flow is finished.
As seen from the above-described embodiment, in the handoff procedure of UTRAN system, RNC is the S-RNTI2 that UE distributes 10bits at gprs system, and forms U-RNTI Short with SRNC Identity, passes to UE by gprs system then.RNC and UE need mend 0 the mode of filling out with the highest 10bits at the S-RNTI2 that distributes, obtain the S-RNTI of a complete 20bits, be used to be identified at the number of UE online when can hold in the same RNC, and form the U-RNTI of 32bits with SRNC Identity.
Above-mentioned handover mechanism has taken into full account the characteristics of gsm system/gprs system, realized from gsm system/gprs system to UTRAN the switching of system/TD-SCDMA system, and improved the performance of handoffs of gsm system/gprs system to UTRAN system/TD-SCDMA system, but, RNC has only 10bits because being the S-RNTI2 that UE distributes, through filling the S-RNTI of the 20bits that forms after 0, the value that its sign can insert the UE maximum number is 2
10, promptly 1024.Therefore, if there are a large amount of UE to switch to UTRAN system/TD-SCDMA system and keep online from gsm system/gprs system, because being the S-RNTI2 that UE distributes, RNC has only 10bits, limited that online UE number can not surpass 1024 when switching to the same RNC of UTRAN system/TD-SCDMA system from gsm system/gprs system, reduced the admittance ability of RNC, cause UE when needs switch and can't finish switching, thereby it is professional that UE is used under relatively poor wireless link environment, reduced UE and used professional quality.
Summary of the invention
In view of this, a main purpose of the present invention is to provide a kind of method of expanding switching capacity between strange systems, improves RNC admits UE when switching ability, the professional quality of assurance UE use.
For achieving the above object, the invention provides a kind of method of expanding switching capacity between strange systems, be used for when second generation mobile communication 2G system switches to 3G (Third Generation) Moblie 3G system, this method comprises:
After radio network controller (RNC) in the 3G system determines that the user equipment (UE) switching is finished, again be UE distribution services Radio Network Temporary Identifier symbol S-RNTI, form new universal mobile telecommunications system wireless access network Radio Network Temporary Identifier symbol U-RNTI with pre-assigned service wireless network controller identifier, and new U-RNTI is sent to UE;
UE and RNC utilize the U-RNTI of new U-RNTI renewal self storage.
The described service radio network temporary identifier S-RNTI that distributes for UE again is 20 bits.
Describedly new U-RNTI is sent to UE specifically comprise: described new U-RNTI is carried in the radio open message of RNC is sent to UE.
Described radio open message is UTRAN mobility information message, and perhaps radio bearer is set up message, perhaps radio bearer release message, perhaps radio bearer configuration messages, perhaps physical channel reallocation message, perhaps transmission channel reallocation message.
Described RNC utilizes the U-RNTI of new U-RNTI renewal self storage specifically to comprise:
Described UE returns the radio open acknowledge message that notice RNC has finished renewal to RNC;
After described RNC receives the radio open acknowledge message, upgrade the U-RNTI that self stores with new U-RNTI.
Radio network controller (RNC) in the described 3G system is determined that user equipment (UE) switches to finish specifically and is comprised:
Base station sub-system BSS in the 2G system carries out switching decision between radio access technologies RAT according to the measurement report judgement that receives, and sends handoff request message to core net CN;
CN sends migration request message to RNC;
After RNC receives migration request message, the S-RNTI 2 that distributes 10 bits for UE, and with S-RNTI2 and the short U-RNTI of service radio network controller identifier composition, generation switches to the UTRAN command messages, carry short U-RNTI, obtain the S-RNTI of 20 bits according to S-RNTI 2 and the strategy that sets in advance, form U-RNTI and storage with the service wireless network controller sign;
RNC carries out wireless resource allocation and foundation in conjunction with self wireless resource allocation algorithm and base station, and generates switching request acknowledgement message, carries and switches to the UTRAN command messages, is sent to UE by CN;
UE obtains S-RNTI 2 from the message that receives, obtain S-RNTI according to S-RNTI 2 and the strategy that sets in advance, and then forms self U-RNTI with the service wireless network controller sign of obtaining, and inserts the UTRAN system;
RNC sends migration to CN and triggers message after perceiving UE access UTRAN system;
UE switches to UTRAN to the RNC answer and finishes message, and RNC finishes message according to the UTRAN that switches to that receives, and sends migration to CN and finishes message.
Further comprise:
CN receives migration and finishes message, and the base station controller BSC among the notice BSS discharges the relevant Radio Resource of 2G system side.
The described strategy that sets in advance is specially: RNC mends the S-RNTI that 0 the mode of filling out obtains 20 bits with the highest 10 bits of S-RNTI 2.
Described reception measurement report specifically comprises:
The quality of Radio Link that UE detects the radio access system of current use drops to and is lower than predefined level, and/or, being raised to qualitatively of the Radio Link of next radio access system is higher than a certain predefined level, and reporting measurement reports is given BSS.
As seen from the above technical solutions, the method of a kind of expanding switching capacity between strange systems provided by the invention, after UE finishes switching from the 2G system to the 3G system, RNC in the 3G system distributes S-RNTI for UE again, form new U-RNTI with SRNC Identity, and this U-RNTI information sent to UE, UE and RNC utilize new U-RNTI to upgrade the U-RNTI of self storage.Because the S-RNTI that RNC is UE to be redistributed is greater than 10bits, thereby increased the number that the same RNC that makes the 2G system switch to the 3G system can hold simultaneously online UE, strengthened the admittance ability of RNC widely, increased the switching capacity of RNC, improved UE and in moving, used professional quality.
Description of drawings
Fig. 1 switches to the method flow schematic diagram of UTRAN system from gprs system for prior art UE;
Fig. 2 is the method flow schematic diagram of expanding switching capacity between strange systems of the present invention;
Fig. 3 is the method idiographic flow schematic diagram of expanding switching capacity between strange systems of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
The method of expanding switching capacity between strange systems provided by the invention, UE switches to UTRAN system/TD-SCDMA system from gsm system/gprs system after, RNC distributes the S-RNTI of a 20bits again for UE, in order to the admissible UE of sign RNC, and form the U-RNTI of 32bits with SRNC Identity, then U-RNTI is carried in UTRAN mobility information (UTRANMOBILITY INFORMATION) message, send to UE by gsm system/gprs system, UE obtains U-RNTI and upgrades the U-RNTI that generates when switching from the UTRAN MOBILITY INFORMATION message that receives.Thereby the same RNC that makes gsm system/gprs system switch to UTRAN system/TD-SCDMA system can hold the number of simultaneously online UE reaches 2
20
Below to switch to the UTRAN system with UE from gprs system be that example describes, the present invention that it should be noted that is equally applicable to UE and switches to other 3G network from other 2G network.
Fig. 2 is the method flow schematic diagram of expanding switching capacity between strange systems of the present invention, and referring to Fig. 2, this flow process comprises:
In this step, RNC for UE redistributes the S-RNTI of a 20bits, and forms U-RNTI with the SRNC Identity of 12bits after MGW sends Relocation Complete message, this SRNC Identity is that RNC is pre-assigned, promptly distributes for UE in aforementioned handoff procedure; Then U-RNTI information is included in the radio open message, for example, UTRAN MOBILITYINFORMATION message or physical channel reallocation message, transmission channel reallocation message, radio bearer configuration messages, radio bearer are set up message, radio bearer release message etc. other can be realized the radio open message of this function.
In the present embodiment, U-RNTI information is included in the UTRAN MOBILITY INFORMATION message.
In the practical application, the length of the S-RNTI that redistributes for UE also can be determined as required.
In this step, UE receives UTRAN MOBILITY INFORMATION message, obtains the U-RNTI information of carrying in the message, with the U-RNTI information of U-RNTI information updating self storage of obtaining.
In this step, if RNC then returns corresponding radio open acknowledge message to RNC by other radio open message transmission U-RNTI information.
In this step, RNC upgrades the U-RNTI that self stores with the U-RNTI that forms from the S-RNTI that redistributes as UE.
So far, the method flow of expanding switching capacity between strange systems of the present invention finishes.
In the present embodiment, after UE finishes switching from gprs system to the UTRAN system, RNC distributes the S-RNTI of a 20bits again for UE, form the U-RNTI of new 32bits and be sent to UE with SRNC Identity, RNC and UE utilize the U-RNTI of this U-RNTI renewal self storage, because RNC is that the S-RNTI that UE redistributes has 20bits,, the same RNC that makes gprs system switch to the UTRAN system reaches 2 thereby can holding the number of simultaneously online UE
20
Table 1 transfers to the table of comparisons of the U-RNTI information of UE for RNC among prior art and the present invention.
Table 1
| Prior art | The present invention | |
| U-RNTI | U-RNTI?Short(22bits) | U-RNTI(32bits) |
| SRNC?Identity | SRNC?Identity(12bits) | SRNC?Identity(12bits) |
| S-RNTI | S-RNTI?2(10bits) | S-RNTI(20bits) |
| Can insert the UE number of RNC | 2 10 | 2 20 |
Fig. 3 is the method idiographic flow schematic diagram of expanding switching capacity between strange systems of the present invention, and switching to the UTRAN system with UE from gprs system is example, referring to Fig. 3, comprises UE, BSS, MSC, SGSN, MGW, RNC and Node B, and this flow process comprises:
Step 301, the quality of Radio Link that UE detects the radio access system of current use drops to and is lower than predefined level, and/or, being raised to qualitatively of the Radio Link of next radio access system is higher than a certain predefined level, reporting measurement reports is given BSS, after BSS receives measurement report, carry out switching decision between RAT, judge and switch;
Step 302, BSS sends HandOver Required message to MSC;
Step 303, MSC receives HandOver Required message, obtains Target Cell Identifier, produces Prepare HandOver message.
Step 304, MGW receives Prepare HandOver message, sends RelocationRequest message to RNC;
Step 305, after RNC receives Relocation Request message, the S-RNTI2 that distributes 10bits for UE, and with S-RNTI2 and SRNC Identity composition U-RNTI Short, generate HandOver To UTRAN Command message, and U-RNTI Short is carried in this message, simultaneously, RNC is by mending 0 the mode of filling out in the highest 10bits position of the S-RNTI2 that distributes for UE, obtain the S-RNTI of a complete 20bits, the U-RNTI that forms 32bits with SRNC Identity also stores, and like this, just can use U-RNTI in the UTRAN system; Then, RNC carries out wireless resource allocation and foundation in conjunction with self wireless resource allocation algorithm and Node B, and is last, and RNC generates Relocation Request Ack message, carries HandOver To UTRAN Command message;
Step 306, RNC returns Relocation Request Ack message to MGW, carries HandOver To UTRAN Command message;
Step 307, MGW receives Relocation Request Ack message, returns Prepare HandOver Response message by SGSN to MSC, carries HandOver To UTRAN Command message;
Step 308, MSC receives Prepare HandOver Response message, sends HandOver Command message to BSS, and notice BSS has been ready to wireless switchable resource;
Step 310, UE receives HandOver To UTRAN Command message, obtain the S-RNTI2 that comprises in the message, and the highest 10bits position of S-RNTI2 mended the S-RNTI that 0 the mode of filling out obtains 20bits, and then form the U-RNTI of 32bits with the SRNC Identity that obtains, insert the UTRAN system according to assigned radio resource;
Step 311, RNC sends RelocationDetect message to MGW after perceiving UE access UTRAN system;
Step 312, UE replys HandOver To UTRAN Complete message to RNC, and RNC receives HandOver To UTRAN Complete message, sends migration to MGW and finishes (RelocationComplete) message;
In this step, RNC receives HandOver To UTRAN Complete message, knows to switch and finishes, and sends Relocation Complete message to core net (CN, Core Network), and notice CN switching is finished; In the present embodiment, CN comprises MSC, SGSN and MGW, and then, the BSC among the CN notice BSS discharges the relevant Radio Resource of gprs system side.
Step 313, RNC redistributes S-RNTI, and forms U-RNTI with SRNC Identity;
In this step, RNC is after MGW sends Relocation Complete message, redistribute the S-RNTI of a 20bits for UE, and form U-RNTI with the SRNC Identity of 12bits, then U-RNTI information is included in the radio open message, for example, UTRAN MOBILITYINFORMATION message or physical channel reallocation message or transmission channel reallocation message or radio bearer configuration messages or radio bearer are set up message or radio bearer release message.
Step 314, RNC sends the UTRAN MOBILITYINFORMATION message of carrying U-RNTI information to UE;
Step 315, UE receives UTRAN MOBILITY INFORMATION message, upgrades the U-RNTI information of self storing;
In this step, UE receives UTRAN MOBILITY INFORMATION message, obtains the U-RNTI information of carrying in the message, with the U-RNTI information of U-RNTI information updating self storage of obtaining.
Step 316, UE returns the UTRAN mobility information to RNC and confirms (UTRAN MOBILITYINFORMATION Confirm) message, and notice RNC has finished renewal.
In this step, if RNC then returns corresponding radio open acknowledge message to RNC by other radio open message transmission U-RNTI information.
Step 317, RNC receives UTRAN MOBILITY INFORMATION Confirm message, upgrades the U-RNTI that self stores, the i.e. U-RNTI that obtains with the U-RNTI that distributes S-RNTI to obtain for UE again in aforementioned handoff procedure.
As seen from the above-described embodiment, the method of a kind of expanding switching capacity between strange systems provided by the invention, after UE finishes switching from the 2G system to the 3G system, RNC in the 3G system distributes the S-RNTI of a 20bits again for UE, form the U-RNTI of new 32bits with SRNC Identity, this U-RNTI information is included in the radio open message sends to UE, UE obtains U-RNTI information from the message that receives, and replying the radio open acknowledge message after upgrading the U-RNTI that self stores, RNC upgrades the U-RNTI that self stores after receiving the radio open acknowledge message.Because RNC is that the S-RNTI that UE redistributes has 20bits,, the same RNC that makes the 2G system switch to the 3G system reaches 2 thereby can holding the number of simultaneously online UE
20Strengthened the admittance ability of RNC widely, increased the switching capacity of RNC, guaranteed that UE can finish switching smoothly when needs switch, thereby UE is switched to Radio Link preferably from relatively poor Radio Link, improved UE and in moving, used professional quality.
More than lift preferred embodiment; the purpose, technical solutions and advantages of the present invention are further described; institute is understood that; the above only is preferred embodiment of the present invention; not in order to restriction the present invention; within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the method for an expanding switching capacity between strange systems is characterized in that, is used for when second generation mobile communication 2G system switches to 3G (Third Generation) Moblie 3G system, and this method comprises:
After radio network controller (RNC) in the 3G system determines that the user equipment (UE) switching is finished, again be UE distribution services Radio Network Temporary Identifier symbol S-RNTI, form new universal mobile telecommunications system wireless access network Radio Network Temporary Identifier symbol U-RNTI with pre-assigned service wireless network controller identifier, and new U-RNTI is sent to UE;
UE and RNC utilize the U-RNTI of new U-RNTI renewal self storage.
2. the method for claim 1 is characterized in that, the described service radio network temporary identifier S-RNTI that distributes for UE again is 20 bits.
3. method as claimed in claim 2 is characterized in that, describedly new U-RNTI is sent to UE specifically comprises: described new U-RNTI is carried in the radio open message of RNC is sent to UE.
4. method as claimed in claim 3 is characterized in that, described radio open message is UTRAN mobility information message, perhaps radio bearer is set up message, perhaps radio bearer release message, perhaps radio bearer configuration messages, perhaps physical channel reallocation message, perhaps transmission channel reallocation message.
5. method as claimed in claim 3 is characterized in that, described RNC utilizes the U-RNTI of new U-RNTI renewal self storage specifically to comprise:
Described UE returns the radio open acknowledge message that notice RNC has finished renewal to RNC;
After described RNC receives the radio open acknowledge message, upgrade the U-RNTI that self stores with new U-RNTI.
6. as any described method of claim 1 to 5, it is characterized in that the radio network controller (RNC) in the described 3G system is determined that user equipment (UE) switches to finish specifically and comprised:
Base station sub-system BSS in the 2G system carries out switching decision between radio access technologies RAT according to the measurement report judgement that receives, and sends handoff request message to core net CN;
CN sends migration request message to RNC;
After RNC receives migration request message, the S-RNTI2 that distributes 10 bits for UE, and with S-RNTI2 and the short U-RNTI of service radio network controller identifier composition, generation switches to the UTRAN command messages, carry short U-RNTI, obtain the S-RNTI of 20 bits according to S-RNTI2 and the strategy that sets in advance, form U-RNTI and storage with the service wireless network controller sign;
RNC carries out wireless resource allocation and foundation in conjunction with self wireless resource allocation algorithm and base station, and generates switching request acknowledgement message, carries and switches to the UTRAN command messages, is sent to UE by CN;
UE obtains S-RNTI2 from the message that receives, obtain S-RNTI according to S-RNTI2 and the strategy that sets in advance, and then forms self U-RNTI with the service wireless network controller sign of obtaining, and inserts the UTRAN system;
RNC sends migration to CN and triggers message after perceiving UE access UTRAN system;
UE switches to UTRAN to the RNC answer and finishes message, and RNC finishes message according to the UTRAN that switches to that receives, and sends migration to CN and finishes message.
7. method as claimed in claim 6 is characterized in that, further comprises:
CN receives migration and finishes message, and the base station controller BSC among the notice BSS discharges the relevant Radio Resource of 2G system side.
8. method as claimed in claim 6 is characterized in that, the described strategy that sets in advance is specially: RNC mends the S-RNTI that 0 the mode of filling out obtains 20 bits with the highest 10 bits of S-RNTI2.
9. method as claimed in claim 6 is characterized in that, described reception measurement report specifically comprises:
The quality of Radio Link that UE detects the radio access system of current use drops to and is lower than predefined level, and/or, being raised to qualitatively of the Radio Link of next radio access system is higher than a certain predefined level, and reporting measurement reports is given BSS.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075906A (en) * | 2010-12-16 | 2011-05-25 | 华为技术有限公司 | Processing method of circuit switched (CS) service and network control equipment |
| CN102164389A (en) * | 2010-02-24 | 2011-08-24 | 中兴通讯股份有限公司 | Terminal system switching method and device |
| CN103313330A (en) * | 2012-03-09 | 2013-09-18 | 鼎桥通信技术有限公司 | Method and device for controlling switching failure in inter-system switching |
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- 2008-09-28 CN CNA2008102236278A patent/CN101370311A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102164389A (en) * | 2010-02-24 | 2011-08-24 | 中兴通讯股份有限公司 | Terminal system switching method and device |
| WO2011103810A1 (en) * | 2010-02-24 | 2011-09-01 | 中兴通讯股份有限公司 | Inter-system handover method and device for terminal |
| CN102164389B (en) * | 2010-02-24 | 2018-01-09 | 中兴通讯股份有限公司 | The inter-system switching method and device of terminal |
| CN102075906A (en) * | 2010-12-16 | 2011-05-25 | 华为技术有限公司 | Processing method of circuit switched (CS) service and network control equipment |
| CN103313330A (en) * | 2012-03-09 | 2013-09-18 | 鼎桥通信技术有限公司 | Method and device for controlling switching failure in inter-system switching |
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