CN100471323C - Method for acquiring system information as switching residence - Google Patents
Method for acquiring system information as switching residence Download PDFInfo
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- CN100471323C CN100471323C CNB2006100611161A CN200610061116A CN100471323C CN 100471323 C CN100471323 C CN 100471323C CN B2006100611161 A CNB2006100611161 A CN B2006100611161A CN 200610061116 A CN200610061116 A CN 200610061116A CN 100471323 C CN100471323 C CN 100471323C
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Abstract
The method is used in getting the desired system information when user is switched between cells which are neighbored and belong to different systems. It comprises: the base station controller in switch initiating side sends the radio information request message to the base station controller in switch destination side to request the system information required by switch; the base station controller at switch destination side loads the system information on the radio information message and sends it to the base station controller at switch initiating side.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to the technology of switching between neighbor cell.
Background technology
Global system for mobile communications) and increased support to Iu interface and Iur-g interface on the basis of the Access Network of EDGE (Enhanced Data rate for GSM Evolution: strengthen data rate GSM service) GERAN (Gsm/Edge Radio Access Network:GSM/EDGE wireless access network) is at GSM (Global System for Mobile Communicaiton:, like this, GERAN just can same UTRAN (Universal Terrestrial Radio Access Network: universal land radio access web) equally link to each other with the 3G core net by the Iu interface, provide the business the same to the user with UTRAN, effective fusion of realization and UTRAN, as shown in Figure 1.In existing system, because sub-district gravity treatment meeting causes 4～8 seconds service disconnection, therefore network assisted cell change NACC (Network Assisted CellChange) is introduced into GERAN inside, (the Packet Service: break period Packet Service) of Packet Service PS when being used for reducing cell change in the R4 version.Same, the gravity treatment between the sub-district of UTRAN and GERAN also can cause identical service disconnection, so introduced the NACC of UTRAN to GERAN again in the R5 version.By this technology of NACC, NACC need obtain and store some essential system informations in the sub-district gravity treatment and before switching, and in the prior art, has three kinds of schemes can realize that described system information obtains.
Scheme one, as shown in Figure 2, in the time need switching to the sub-district of GERAN from the sub-district of UTRAN, obtain and preserve essential system information by service wireless network controller SRNC (Serving Radio Network Controller), its main process is that SRNC passes through the Iu interface and asks described system information to service GRPS gateway supporting node SGSN (Serving GPRS Support Node), and SGSN is the described system information of the base station controller BSC in GERAN (Base Station Controller) request and return to SRNC then.
As shown in Figure 2, in the time need switching to the sub-district of GERAN from the sub-district of UTRAN, the process that SRNC obtained and preserved required system information is as follows:
Step 200, SRNC send wireless messages request message RANINFORMATION REQUEST by the Iu interface to SGSN, are used to ask to switch required system information;
Step 201, SGSN are transmitted to corresponding BSC among the GERAN with it after receiving this message;
Step 202, BSC search corresponding system information and it are carried among the wireless messages message RANINFORMATION and send to SGSN;
Step 203, SGSN send wireless messages report message RANINFORMATION REPORT by the Iu interface to SRNC, and described system information just is carried in this message;
The ＂ on-demand ＂ flow process of a Here it is wireless access network information management.
Equally, also can finish multiple reports with ＂ on-modification ＂ flow process, this flow process mainly is exactly that BSC can send many wireless messages message to SGSN:
Step 204, BSC continue to send wireless messages message RAN INFORMATION to SGSN;
Step 205, SGSN send wireless messages report message RANINFORMATION REPORT by the Iu interface to SRNC;
For multiple reports, SRNC can stop report with TERMINATION or END message, promptly further comprises after step 205:
Step 206, SRNC send TERMINATION or END message to BSC by SGSN.
Scheme two, when needs when the UTRAN sub-district switches to the GERAN sub-district, also can obtain and preserve required system information at Local RNC, mainly realize in the following way:
The tabulation of pre-configured adjacent GERAN districts, Local RNC is by the system information of Iu interface to SGSN request adjacent GERAN districts, and SGSN is the described system information of base station controller BSC request in GERAN and return to Local RNC then.
As shown in Figure 3, this process is:
Step 300, Local RNC send wireless messages request message RANINFORMATION REQUEST by the Iu interface to SGSN, are used to ask to switch required system information;
Step 301, SGSN are transmitted to corresponding BSC among the GERAN with it after receiving this message;
Step 302, BSC search corresponding system information and it are carried among the wireless system message RANINFORMATION and send to SGSN;
Step 303, SGSN send to Local RNC with this wireless system message RAN INFORMATION.
Like this, Local RNC has just obtained the described system information of GERAN sub-district.
By two above-mentioned technical schemes as can be known, when needs when the UTRAN sub-district switches to the GERAN sub-district, all need the signaling process process of SGSN when obtaining required system information by SRNC or Local RNC, increased the signaling complexity of SGSN like this; Simultaneously, owing to need SRNC or Local RNC to pass through the Iu interface to SGSN Request System information, SGSN asks to BSC again, and then be given to SRNC or Local RNC by the information that SGSN returns BSC, so bring bigger time delay, and the main purpose of introducing NACC is exactly the break period of PS business when being used for reducing cell change, if can not in time obtain described system information before cell change, just can not be transformed into the PS business on the better sub-district quickly.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of acquiring system information as switching residence, reduces the time of handoff, accelerates the flow process of switching, and assurance PS business is not interrupted.
Technical scheme of the present invention is as follows:
A kind of method of acquiring system information as switching residence, this method comprises:
Switch initiator's base station controller and directly send the wireless messages request message to the handover-target base station controller, required system information is switched in request;
The handover-target base station controller is carried on required system information directly to send in the wireless messages message and switches initiator's base station controller.
Preferable, this method is applied to the switching between UTRAN sub-district and adjacent GERAN districts, and described switching initiator base station controller directly sends the wireless messages request message to the handover-target base station controller by the Iur-g interface.
Preferable, described sub-district switches to from the UTRAN sub-district and switches to adjacent GERAN sub-district, and switching initiator's base station controller is SRNC, and the handover-target base station controller is BSC.
Preferable, also comprise:
The BSC continuation is carried on system information in the wireless messages message and sends to SRNC;
SRNC transmission TERMINATION or END message are to BSC.
Preferable, described sub-district switches to from the UTRAN sub-district and switches to adjacent GERAN sub-district, and switching initiator's base station controller is Local RNC, and the handover-target base station controller is BSC.
Preferable, when SRNC needed described system information, Local RNC issued SRNC to described system information.
Preferable, described sub-district switches to from the GERAN sub-district and switches to adjacent UTRAN sub-district, and switching initiator's base station controller is BSC, and the handover-target base station controller is SRNC.
Preferable, described system information comprises circuit domain system information and/or PS domain system information.
By scheme of the present invention as can be known, obtain by the direct communication of switching initiator's base station controller and handover-target base station controller and to switch required system information and need not transmit by SGSN, both avoided the signaling process of SGSN, reduce the signaling process complexity of SGSN, reduced the time delay of obtaining described system information again, accelerated the speed that switch the sub-district, guaranteed that the PS business is not interrupted.
Description of drawings
Fig. 1 is GERAN reference configuration figure;
Fig. 2 is the flow chart of prior art 1;
Fig. 3 is the flow chart of prior art 2;
Fig. 4 is the flow chart of embodiments of the invention one;
Fig. 5 is the flow chart of embodiments of the invention two;
Fig. 6 is the flow chart of embodiments of the invention three.
Embodiment
Core concept of the present invention is: when needs switch between two adjacent different system cells, the base station controller direct communication of two adjacent different system cells is obtained and is switched required system information, and need not transmit by SGSN, so just both can avoid the signaling process of SGSN, reduced the time delay of obtaining described system information again, accelerated the speed that switch the sub-district, guaranteed that the PS business is not interrupted.
For make purpose of the present invention, technical scheme, and advantage clearer, below between adjacent UTRAN sub-district and GERAN sub-district, switch to example, with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.Because GERAN supports the Iur-g interface, so required system information can directly be obtained by the Iur-g interface by RNC and BSC when switching between adjacent UTRAN sub-district and GERAN sub-district.
As shown in Figure 4, in the time need switching to its adjacent GERAN sub-district, obtain and preserve the needed system information of switching by current SRNC, at this moment from the UTRAN sub-district, directly ask required system information by SRNC by the Iur-g interface, specifically may further comprise the steps to corresponding BSC:
Owing to can directly intercom mutually between GERAN and the UTRAN by the Iur-g interface, so needn't again wireless messages request message RAN INFORMATION REQUEST be sent on the SGSN by the Iu interface earlier, but directly this message is sent to BSC to obtain information needed by the Iur-g interface, like this, SGSN just need not handle relevant signaling again, the corresponding signaling process complexity that has just reduced SGSN, simultaneously, because all message all need not be come transfer through SGSN, so reduced the time delay of the information of obtaining again.
Step 401, BSC search corresponding information and it are carried among the wireless messages message RANINFORMATION and send to SRNC by the Iur-g interface;
The ＂ on-demand ＂ flow process of a Here it is wireless access network information management.
Equally, also can finish multiple reports with ＂ on-modification ＂ flow process, this flow process mainly is exactly that BSC can send many wireless messages message to SGSN:
For multiple reports, SRNC can stop this process with TERMINATION or END message, promptly also further comprises after step 402:
Embodiment 2
As shown in Figure 5, when switching to adjacent GERAN sub-district, also can obtain and preserve needed system information by Local RNC from the UTRAN sub-district.After Local RNC configures the adjacent GERAN districts tabulation, directly ask required system information by the Iur-g interface in advance, specifically may further comprise the steps to BSC by Local RNC:
In the subsequent step, when SRNC needed described system information, Local RNC passed to SRNC to described system information on the Iur interface, and having three kinds of schemes can select:
1, use existing [RNSAP] RADIO LINK SETUP RESPONSE flow process, the described system information of each adjacent GERAN districts can fill in the ＂ GSM neighbouring cellinformation ＂ IE.
2, use existing [RNSAP] Information Exchange flow process, when SRNC sets up first wireless connections RL in DRNC when, just can initiate an Information Exchange flow process, report can be based on ＂ On-modification ＂ pattern, in R5, this report can only be at a sub-district.
3, increase new RNSAP flow process, at first preserved the system information of the adjacent GERAN districts of each sub-district among the Local RNC; Preserved other RNC that play the part of SRNC role for UE among the Local RNC whether the system information of relevant adjacent GERAN districts and the information whether they are updated have been arranged.When a new RL set up or adds, if there is not the up-to-date information of the system information of this adjacent GERAN districts among this SRNC, Local RNC will send relevant information to SRNC.When Local RNC receives the up-to-date information of GERAN BSC about the system information of one or more adjacent GERAN districts, Local RNC passes to one or more relevant SRNC to relevant information.
Embodiment 3
When need switch to the sub-district of adjacent UTRAN from the sub-district of GERAN, BSC need obtain the system information of UTRAN, at this moment, as shown in Figure 6, specifically may further comprise the steps:
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect have been carried out further detailed description; institute is understood that; the above only is specific embodiments of the invention; not in order to restriction the present invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1, a kind of method of acquiring system information as switching residence is characterized in that, this method comprises:
A, switching initiator base station controller directly send the wireless messages request message to the handover-target base station controller, and required system information is switched in request;
B, handover-target base station controller are carried on required system information directly to send in the wireless messages message and switch initiator's base station controller.
2, the method for claim 1, it is characterized in that, this method is applied to the switching between UTRAN sub-district and adjacent GERAN districts, and described switching initiator base station controller and handover-target base station controller directly carry out interacting message by the Iur-g interface.
3, method as claimed in claim 2 is characterized in that, described sub-district switches to from the UTRAN sub-district and switches to adjacent GERAN sub-district, and switching initiator's base station controller is SRNC, and the handover-target base station controller is BSC.
4, method as claimed in claim 3 is characterized in that, after the described step B, also comprises:
C, BSC continuation is carried on system information in the wireless messages message and sends to SRNC;
D, SRNC transmission TERMINATION or END message are to BSC.
5, method as claimed in claim 2 is characterized in that, described sub-district switches to from the UTRAN sub-district and switches to adjacent GERAN sub-district, and switching initiator's base station controller is Local RNC, and the handover-target base station controller is BSC.
6, method as claimed in claim 5 is characterized in that, when SRNC needed described system information, Local RNC issued SRNC to described system information.
7, method as claimed in claim 2 is characterized in that, described sub-district switches to from the GERAN sub-district and switches to adjacent UTRAN sub-district, and switching initiator's base station controller is BSC, and the handover-target base station controller is SRNC.
8, method as claimed in claim 1 or 2 is characterized in that, described system information comprises circuit domain system information and/or PS domain system information.
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| CNB2006100611161A CN100471323C (en) | 2006-06-13 | 2006-06-13 | Method for acquiring system information as switching residence |
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| CNB2006100611161A CN100471323C (en) | 2006-06-13 | 2006-06-13 | Method for acquiring system information as switching residence |
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| CN100471323C true CN100471323C (en) | 2009-03-18 |
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| EP3668179A1 (en) | 2006-06-20 | 2020-06-17 | InterDigital Technology Corporation | Content of the handover command in an intra-lte handover |
| US8200084B2 (en) * | 2007-11-01 | 2012-06-12 | Futurewei Technologies, Inc. | Encoding for information needed for routing and wavelength assignment in wavelength switched optical networks |
| CN102355705B (en) | 2008-01-30 | 2014-04-30 | 华为技术有限公司 | ISR (idle-mode signaling reduction) method and system |
| US8649353B2 (en) | 2008-03-04 | 2014-02-11 | Interdigital Patent Holdings, Inc. | Method and apparatus for accessing a random access channel by selectively using dedicated or contention-based preambles during handover |
| CN101730084B (en) * | 2008-03-19 | 2013-11-06 | 华为技术有限公司 | Method for saving signalling and system thereof |
| US8712415B2 (en) | 2008-03-20 | 2014-04-29 | Interdigital Patent Holdings, Inc. | Timing and cell specific system information handling for handover in evolved UTRA |
| JP5107465B2 (en) | 2008-06-30 | 2012-12-26 | インターデイジタル パテント ホールディングス インコーポレイテッド | Method and apparatus for performing handover in E-UTRAN (Evolved Universal Terrestrial Radio Access Network) |
| CN101730065A (en) * | 2008-10-28 | 2010-06-09 | 中兴通讯股份有限公司 | Method for updating switching parameters in the process of soft switching of terminal among access networks |
| US8208405B2 (en) * | 2009-02-27 | 2012-06-26 | Futurewei Technologies, Inc. | Information encoding for impaired optical path validation |
| CN101932056A (en) * | 2009-06-24 | 2010-12-29 | 中兴通讯股份有限公司 | Method for switchover among wireless access systems |
| CN101938801B (en) * | 2009-06-30 | 2013-08-07 | 中兴通讯股份有限公司 | Method and system for realizing relocation between networks |
| CN102045801B (en) * | 2009-10-26 | 2013-01-30 | 鼎桥通信技术有限公司 | Iur-g interface-based switching method |
| CN102158841B (en) * | 2010-02-11 | 2015-05-20 | 中兴通讯股份有限公司 | Neighboring cell information transmission method and system |
| WO2014082269A1 (en) * | 2012-11-29 | 2014-06-05 | 华为技术有限公司 | Inter-system handover method, device and system |
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Effective date of registration: 20211227 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |