CN101431772B - Method and apparatus for transmitting/receiving carrier frequency switch assisting information - Google Patents
Method and apparatus for transmitting/receiving carrier frequency switch assisting information Download PDFInfo
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- CN101431772B CN101431772B CN2007101243000A CN200710124300A CN101431772B CN 101431772 B CN101431772 B CN 101431772B CN 2007101243000 A CN2007101243000 A CN 2007101243000A CN 200710124300 A CN200710124300 A CN 200710124300A CN 101431772 B CN101431772 B CN 101431772B
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- carrier frequency
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000007704 transition Effects 0.000 claims description 27
- 238000012546 transfer Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 abstract description 8
- 230000035939 shock Effects 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
- H04W36/142—Reselecting a network or an air interface over the same radio air interface technology
Abstract
The invention belongs to the technical field of wireless communication, and discloses a method for receiving and sending assistant carrier frequency switching information. The method comprises: sending network redirected information to a mobile terminal; and receiving the network redirected information by the mobile terminal needing network redirection, and selecting carrier frequency to switch after analyzing and calculating. The invention also discloses a device for the method comprises a base station and the mobile terminal, wherein the base station comprises a storage module and a sending module; and the mobile terminal comprises a receiving module, a reading module and a calculating module. By adopting the method and device, when large amount of the mobile terminals need redirection, load shock for the system selected by the large amount of the mobile terminals to a same target carrier frequency or a network moment can be reduced.
Description
Technical field
The invention belongs to the wireless communication technique field, particularly a kind of method of transmitting/receiving carrier frequency switch assisting information and device.
Background technology
In the present WiMAX system; A kind of function of network redirection is provided, such as mobile terminal MS when the initial ranging, after current access base station BS sends RNG-REQ; If base station BS finds have other carrier frequency or network that better service can be provided; Perhaps own current network load is heavier, and base station BS can be redirected (redirect) with mobile terminal MS and go to other carrier frequency or network through in the RNG-RSP message of response, carrying purpose carrier frequency or network identity so.But 16e only provides this a kind of point-to-point network redirection function at present; Be that each base station BS can only be redirected a mobile terminal MS that is inserting, in other the scene, some situations take place such as working as network at some; For example network needs to safeguard; Network billing goes wrong, and network can not provide reasons such as business, and system can't be through sending the network redirection message of point-to-multipoint; Notify all mobile terminal MSs of a mobile terminal MS or a group of mobile terminals MS or current service to transfer on other system carrier frequency or the network, influence the normal communication of mobile terminal MS.
Among the present Ultra-Mobile Broadband UMB; For base station BS is when perhaps all mobile terminal MSs are transferred to other carrier frequency or network with a group of mobile terminals MS; Because though base station BS can provide a plurality of carrier frequency or networks of diverting the aim; Select but select to remain mobile terminal MS oneself, and mobile terminal MS is not known the message such as load of these target carrier frequency, just might cause a large amount of mobile terminal MSs to choose same target carrier frequency or network; If this moment, these mobile terminal MSs determined to transfer to other carrier frequency or network simultaneously, can cause the load impact of moment to these carrier frequency or network equally.
Summary of the invention
The embodiment of the invention provides a kind of method and device of transmitting/receiving carrier frequency switch assisting information especially in order to solve deficiency of the prior art.
The method of the embodiment of the invention comprises:
A kind of method that receives carrier frequency switch assisting information; The portable terminal that is receiving carrier frequency f1 service receives network redirection message, and said network redirection message is carried purpose network carrier frequency that said portable terminal can transfer to and the transition probability of transferring to purpose network carrier frequency; After said portable terminal is received said redirect message, resolve said network redirection message and obtain said purpose network carrier frequency and said transition probability; Said portable terminal generates a random number and one of them purpose network carrier frequency between 0～1 transition probability compares; If the random number that portable terminal produces is then transferred to said one of them purpose network carrier frequency greater than the transition probability of said one of them purpose network carrier frequency.
Adopt the method and the device of embodiment of the invention network redirection, when a large amount of portable terminals need be redirected, can reduce a large amount of portable terminals and choose same target carrier frequency or network moment load impact system.
Description of drawings
Fig. 1 is the base station sketch map of the embodiment of the invention;
Fig. 2 is the method step flow chart of the embodiment of the invention 1;
Fig. 3 is the flow chart of steps of the inventive method;
Fig. 4 is the base station apparatus of the embodiment of the invention and the sketch map of mobile terminal apparatus.
Embodiment
In order to solve deficiency of the prior art, the embodiment of the invention provides a kind of method of transmitting/receiving carrier frequency switch assisting information especially, is described in detail through concrete execution mode below.
Embodiment 1
With reference to Fig. 1, Fig. 2, in the WiMAX system based on multi-carrier mode, there are 4 carrier waves configuration f1, f2, f3, f4 in the base station coverage area.Certain moment carrier frequency f1 need carry out network operation, and the base station stops at carries out the wireless access service on the carrier frequency f1.May further comprise the steps:
Step 11; Network redirection message is initiatively assembled in the base station; And carrying purpose network carrier frequency f2, f3 and the f4 of network redirection, the load information according to carrier frequency f2, carrier frequency f3 and carrier frequency f4 is provided with transition probability p2, p3 and p4 respectively, then network redirection message is broadcasted on carrier wave f1;
Step 12, all portable terminals that receiving carrier frequency f1 service receive the network redirection message that send the base station;
The transition probability that step 13, some portable terminals read in the network redirection message at first is resolved to purpose redirecting network f2 and transition probability p2;
Step 14, said portable terminal produce a random number at random and compare with p2, if greater than p2, then portable terminal will be redirected to f2, otherwise
Step 15, said portable terminal are obtained the transition probability p3 of carrier frequency f3, and produce at random random number and with p3 relatively, if greater than p3, then portable terminal will be redirected to carrier frequency f3, otherwise
Step 16, said portable terminal is transferred to carrier frequency f4.
After selected purpose carrier frequency is transferred in the portable terminal decision, with breaking off and original network service.
Embodiment 2
With reference to Fig. 1, Fig. 3, in the WiMAX system based on multi-carrier mode, there are 4 carrier waves configuration f1, f2, f3, f4 in the base station coverage area.Certain moment carrier frequency f1 need carry out network operation, and the base station stops at carries out the wireless access service on the carrier frequency f1.May further comprise the steps:
Step 21, base station are initiatively assembled network redirection message, and the deferred message value scope that respectively carrier frequency f2, carrier frequency f3 and carrier frequency f4 is provided with is in advance broadcasted under carrier frequency f1 through network redirection message;
Step 22 after all portable terminals that receiving carrier frequency f1 service receive the network redirection message of sending the base station, reads the deferred message in the network redirection message;
Step 23, portable terminal A is a high-priority users, chooses the delay stand-by period of a value as oneself in the deferred message from the network redirection message that reads immediately, for example is 2 frames.Then this portable terminal A switches to the purpose carrier frequency after waiting for 2 frames, proceeds communication.
Step 24, portable terminal B is a low priority user, because the base station has preestablished the deferred message of different priorities, then the deferred message of portable terminal B from the network redirection message that reads can be bigger than normal, for example is 4 frames.Then this portable terminal B switches to the purpose carrier frequency after waiting for 4 frames, proceeds communication.
Under situation of the same race, because the base station preestablishes for portable terminal QoS priority, high-priority users is switched earlier.
Enforcement 1 is applicable to that with enforcement 2 the current network that needs to safeguard has had a large number of users access, sends network redirection message through the base station, can rapidly a large number of users be switched under other carrier frequency and proceed communication.Through the different priorities of different mobile terminal is set; Guaranteed can be orderly when a plurality of portable terminals switch to same purpose carrier frequency simultaneously switching; Avoid the reverse access signal or the range channel of purpose carrier frequency are caused very big moment load impact, reduced the generation of network congestion.
Embodiment 3
Network redirection information (for example in DCD message) can be carried in the base station in system parameters message in the WiMAX system.Certain constantly; The base station region covered exists 3 carrier waves configuration f1, f2, f3; Because the charge system that carrier frequency f1 is corresponding goes wrong; Carrier frequency f1 will not provide the wireless access service, and operator hopes that all should transfer to the service that receives on carrier frequency f2 or the carrier frequency f3 at the portable terminal that receives service on the f1.May further comprise the steps:
Step 31; Network redirection information is carried in the base station in the system parameters message of broadcasting, at first indication network carrier frequency f1 temporarily is in maintenance state, and is unavailable; Portable terminal can be transferred to purpose network carrier frequency f2 or purpose network carrier frequency f3, and carries the probability of transferring to carrier frequency f2;
Step 32, each captures the portable terminal of network carrier frequency f1, after said portable terminal receives the system parameters message on the carrier frequency f1, finds that carrier frequency f1 is unavailable, and then portable terminal is resolved purpose network carrier frequency f2 and transition probability thereof;
Step 33, said portable terminal produce random number and compare with p2, if greater than p2, then portable terminal will be transferred to carrier frequency f2, otherwise portable terminal is transferred to carrier frequency f3.
Present embodiment is through being provided with the different priorities of different mobile terminal; And then different transition probabilities is set according to different priority; Guaranteed can be orderly when a plurality of portable terminals switch to same purpose carrier frequency simultaneously switching; Avoid the reverse access signal or the range channel of purpose carrier frequency are caused very big moment load impact, reduced the generation of network congestion.
Embodiment 4
Base station BS can carry network redirection information (for example in DCD message) in system parameters message in the WiMAX system.Certain constantly; The base station region covered exists 3 carrier waves configuration f1, f2, f3; Because the charge system that carrier frequency f1 is corresponding goes wrong; Carrier frequency f1 will not provide the wireless access service, and operator hopes that all should transfer to the service that receives on carrier frequency f2 or the carrier frequency f3 at the portable terminal that receives service on the f1, may further comprise the steps:
Step 41; Network redirection information is carried in the base station in the system parameters message of broadcasting; At first indication network carrier frequency f1 temporarily is in maintenance state; Unavailable, portable terminal can be transferred to purpose network carrier frequency f2 or purpose network carrier frequency f3, and carries the deferred message value scope m2 of access carrier f2;
Step 42, each captures the portable terminal of network carrier frequency f1, after said portable terminal receives the system parameters message on the carrier frequency f1, finds that carrier frequency f1 is unavailable, and then portable terminal is resolved purpose network carrier frequency f2 and deferred message value scope m2 thereof;
Step 43, said portable terminal are chosen a value as the time of delay that oneself switches to carrier frequency f2 from deferred message value scope m2 at random, and for example be 3 frames time of delay, and then this mobile terminal MS switches to carrier frequency f2 and carries out communication after waiting for 3 frames.
Present embodiment is through being provided with the different priorities of different mobile terminal; And then different delay values is set; Guaranteed can be orderly when a plurality of portable terminals switch to same purpose carrier frequency simultaneously switching; Avoid the reverse access signal or the range channel of purpose carrier frequency are caused very big moment load impact, reduced the generation of network congestion.
Embodiment 5
Base station current service carrier frequency f1 does not support for the business that certain portable terminal need obtain, and supports this professional network carrier frequency f2 or carrier frequency f3 and this portable terminal is redirected to another.May further comprise the steps:
Step 51, base station preestablish transition probability p2, the p3 in the network redirection message of carrier frequency f2 and carrier frequency f3, and through broadcast mode, transition probability p2, p3 in the network redirection message are sent to portable terminal;
Step 52, said portable terminal receives network redirection message and resolves purpose network carrier frequency f2 and transition probability thereof;
Step 53, said portable terminal produce random number and compare with p2, if greater than p2, then portable terminal will be transferred to carrier frequency f2, otherwise portable terminal is transferred to carrier frequency f3.
Embodiment 6
In certain moment, base station current service carrier frequency f1 stops service for certain multicast connection, and all portable terminals that receiving this multicast service are redirected to another network carrier frequency f2 that this multicast Connection Service is provided or carrier frequency f3.May further comprise the steps:
Step 61, base station preestablish deferred message scope m2, the m3 in the network redirection message of carrier frequency f2 and carrier frequency f3, and through broadcast mode, transition probability p2, p3 in the network redirection message are sent to portable terminal;
Step 62, said portable terminal receives network redirection message and resolves purpose network carrier frequency f3 and deferred message value scope m3;
Step 63, said portable terminal are chosen a value as the time of delay that oneself switches to carrier frequency f3 from deferred message value scope m3 at random, and for example be 1 frame time of delay, and then this portable terminal switches to carrier frequency f3 and carries out communication after waiting for 1 frame.
Embodiment 5 and embodiment 6 be through being provided with transition probability and postponing value, reaches the quantity of the portable terminal that control purpose carrier frequency allows to insert, and avoids causing very big moment load impact and network congestion.
The embodiment of the invention also provides a kind of method of the present invention related device, comprises a kind of base station 301 and a kind of portable terminal 302, referring to Fig. 4:
Said base station comprises:
Generation module: be used to generate network redirection message, said network redirection message is carried load information or deferred message, or further carries transition probability corresponding with said load information or the length of delay corresponding with said deferred message;
Sending module: be used for sending said network redirection message to portable terminal.
Said portable terminal comprises:
Receiver module 3021: be used to receive network redirection message, said network redirection message is carried load information or deferred message, or further carries transition probability corresponding with said load information or the length of delay corresponding with said deferred message;
Read module 3022: be used for reading load information or the deferred message that network redirection message is carried, or read transition probability or the length of delay that further carries in the said network redirection message;
Search module 3023: be used for searching the transition probability corresponding with load information from mapping table, or the length of delay corresponding with deferred message;
Computing module 3024: between 0～1, generate transition probability in a numeral and the network redirection message at random and compare selection and whether carry out carrier frequency and switch, or select to carry out carrier frequency according to length of delay and switch.
The present invention is not breaking away under its spirit and the substantive characteristics prerequisite; Multiple embodiment can be arranged; Be to be understood that the foregoing description is not limited to above-mentioned any details; And should be in defined spirit of accompanying claims and scope be explained widely, therefore, in all borders of dropping on claim and the scope or all attempt to be included in the accessory claim with the variation and the modification of these borders and scope equivalence.
Claims (3)
1. method that receives carrier frequency switch assisting information; It is characterized in that; The portable terminal that is receiving carrier frequency f1 service receives network redirection message, and said network redirection message is carried purpose network carrier frequency that said portable terminal can transfer to and the transition probability of transferring to purpose network carrier frequency; After said portable terminal is received said redirect message, resolve said network redirection message and obtain said purpose network carrier frequency and said transition probability; Said portable terminal generates a random number and one of them purpose network carrier frequency between 0～1 transition probability compares; If the random number that portable terminal produces is then transferred to said one of them purpose network carrier frequency greater than the transition probability of said one of them purpose network carrier frequency.
2. method according to claim 1 is characterized in that, said portable terminal generates a random number and one of them purpose network carrier frequency between 0～1 transition probability compares and comprises:
A, random number are greater than this transition probability, and portable terminal inserts this purpose network carrier frequency;
B otherwise, portable terminal continues the network redirection message that other carrier frequency of scanning send or waits for that next continues to monitor the network redirection message that same carrier frequency sends constantly.
3. method according to claim 1 is characterized in that, said method further comprises:
Portable terminal obtains self service quality priority information, and said portable terminal combines said portable terminal self service quality priority Information Selection target carrier frequency to switch according to said transition probability.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101243000A CN101431772B (en) | 2007-11-06 | 2007-11-06 | Method and apparatus for transmitting/receiving carrier frequency switch assisting information |
| PCT/CN2008/072957 WO2009067890A1 (en) | 2007-11-06 | 2008-11-05 | Method for receiving or transmitting assistant carrier frequency switching information and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101243000A CN101431772B (en) | 2007-11-06 | 2007-11-06 | Method and apparatus for transmitting/receiving carrier frequency switch assisting information |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101431772A CN101431772A (en) | 2009-05-13 |
| CN101431772B true CN101431772B (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101243000A Expired - Fee Related CN101431772B (en) | 2007-11-06 | 2007-11-06 | Method and apparatus for transmitting/receiving carrier frequency switch assisting information |
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| Country | Link |
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| CN (1) | CN101431772B (en) |
| WO (1) | WO2009067890A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101959180B (en) * | 2009-07-13 | 2015-07-22 | 中兴通讯股份有限公司 | Communication realizing method based on terminal hardware reconfiguration and base station |
| WO2011032457A1 (en) * | 2009-09-18 | 2011-03-24 | 中兴通讯股份有限公司 | Communication realization method and base station based on terminal hardware reconfiguration |
| CN106550426A (en) * | 2015-09-18 | 2017-03-29 | 中兴通讯股份有限公司 | Connection control method and communication node |
| CN110839258B (en) | 2018-08-17 | 2021-09-21 | 展讯通信（上海）有限公司 | Condition switching method and device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1592476A (en) * | 2004-04-16 | 2005-03-09 | 上海贝尔三星移动通信有限公司 | Switching method for use in CDMA mobile communication system and apparatus thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7039410B2 (en) * | 2003-04-22 | 2006-05-02 | Lucent Technologies Inc. | Method of handoff at the border between CDMA underlay and overlay systems |
| US20050147127A1 (en) * | 2004-01-02 | 2005-07-07 | Padmaja Putcha | Multicasting data method in a radio communication system |
| CN100352306C (en) * | 2004-08-04 | 2007-11-28 | 中兴通讯股份有限公司 | TD-SCDMA system cell multi-carrier frequency covering method |
| CN100407853C (en) * | 2004-08-10 | 2008-07-30 | 中兴通讯股份有限公司 | Multi-carrier frequency cell major and minor carrier frequency adjusting method in TD-SCDMA system |
-
2007
- 2007-11-06 CN CN2007101243000A patent/CN101431772B/en not_active Expired - Fee Related
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2008
- 2008-11-05 WO PCT/CN2008/072957 patent/WO2009067890A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1592476A (en) * | 2004-04-16 | 2005-03-09 | 上海贝尔三星移动通信有限公司 | Switching method for use in CDMA mobile communication system and apparatus thereof |
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| Publication number | Publication date |
|---|---|
| WO2009067890A1 (en) | 2009-06-04 |
| CN101431772A (en) | 2009-05-13 |
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Effective date of registration: 20140313 Address after: 213164 building C, building 407-2-6, Tian An Digital City, 588 Chang Wu Road, Wujin hi tech Industrial Development Zone, Changzhou, Jiangsu, China Patentee after: Changzhou Xiaoguo Information Service Co., Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: Huawei Technologies Co., Ltd. |
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Effective date of registration: 20170816 Address after: 246100, village house 020, Yung Ling Town, Huaining County, Anqing, Anhui Patentee after: Han Jiuping Address before: 213164 building C, building 407-2-6, Tian An Digital City, 588 Chang Wu Road, Wujin hi tech Industrial Development Zone, Changzhou, Jiangsu, China Patentee before: Changzhou Xiaoguo Information Service Co., Ltd. |
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