CN1607856A - Community switching method for mobile station - Google Patents
Community switching method for mobile station Download PDFInfo
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- CN1607856A CN1607856A CN200310104532.1A CN200310104532A CN1607856A CN 1607856 A CN1607856 A CN 1607856A CN 200310104532 A CN200310104532 A CN 200310104532A CN 1607856 A CN1607856 A CN 1607856A
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- travelling carriage
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- switching method
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- cell switching
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004364 calculation method Methods 0.000 claims description 8
- 238000010295 mobile communication Methods 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012546 transfer Methods 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
- H04W36/34—Reselection control
- H04W36/36—Reselection control by user or terminal equipment
Abstract
This invention relates to local area switch of a mobile communication system which reduces the time delay of the switch and simplifies the switch process by the base station controller and allows the mobile station to raise switch requests spontaneously including the following steps: A mobile station tests the parameters necessary in the switch algorithm and computes the test result according to said switch algorithm, said mobile station judges if a switch is needed according to the computing result, if so, it sends the switch request information to the network side which responds the switch request information of the mobile station and switches.
Description
Technical field
Switch the sub-district that the present invention relates to mobile communication system, particularly the method that travelling carriage switches between different districts in the mobile communication system.
Background technology
The communication technology especially moves current technology and obtains tremendous development in recent years.Along with first to the releasing one after another of 3-G (Generation Three mobile communication system), move current influence and increase day by day human lives and work.
All be based upon on the basis of cell mobile communication systems by the second generation mobile communication system of global extensive use and the 3-G (Generation Three mobile communication system) that is about to be used on a large scale at present.Channeling in the cellular technology has improved frequency efficiency greatly, and has increased capability of communication system, and wherein, handover has been expanded the service range of communication network greatly as the advantage in the cellular technology.Switch and be meant travelling carriage (the Mobile Station that is in call setup state or busy condition with, be called for short " MS ") transfer on the new Traffic Channel, its purpose is to continue to keep the conversation of travelling carriage when Serving cell changes, perhaps under current service cell or the big situation of channel disturbance, carry out channel and switch, guarantee the balance of inter-cell traffic.
Below with reference to Fig. 1, for example the process that switch the sub-district in the prior art is described with global system for mobile communications (Global System for mobileCommunication is called for short " GSM ").
As shown in Figure 1, in step 100, base station transceiver (Base Transceiver Station, be called for short " BTS ") notice travelling carriage (Mobile Station, be called for short " MS ") measure its peripheral cell BTS for information about, and the signal strength signal intensity and the transmission quality of the shared Traffic Channel (Traffic Channel is called for short " TCH ") of Broadcast Control Channel (Broadcasting Control Channel, be called for short " BCCH ") carrier frequency, signal strength signal intensity, this MS.
After this enter step 200, MS measures according to above-mentioned instruction.
After this enter step 300, after MS measures, measurement result is sent to base station controller (BaseStation Controller is called for short " BSC ").
After this enter step 400, BSC compares queuing according to measurement result to peripheral cell, and whether decision needs to switch, and judges the time of switching and switch to which BTS.
The traffic balance of mentioning hereinbefore of guaranteeing the minizone and the switching carried out is meant that MS converses in the overlapping area of two sub-districts, this Zone of occupied TCH is busy than another sub-district, this moment, BSC notice MS measured signal strength signal intensity, the channel quality of another sub-district, and according to measurement result, whether decision switches to another sub-district with this MS.Main process is identical with flow chart shown in Figure 1.
Need to prove, though the term with GSM among the present invention illustrates technical problem, technical scheme and technique effect, but the present invention also can be applied to code division multiple access (Code Division MultipleAccess, abbreviation " CDMA ") waits other second generation communication systems, perhaps Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, be called for short " WCDMA ") wait 3G (Third Generation) Moblie (The Third Generation, abbreviation " 3G ").The technical staff who is familiar with field of the present invention will appreciate that, the communication system part of mentioning among the present invention program all has corresponding part in various mobile communication system, for example, MS among the GSM and the UE correspondence among the 3G, BTS among the GSM and the NodeB among the 3G (B node) correspondence, BSC among the GSM and the radio network controller among the 3G (Radio Network Controller is called for short " RNC ") correspondence, or the like.
In actual applications, there is following problem in such scheme: at first, the processing in the handoff procedure is very complicated.Specifically, in above-mentioned flow process, to the channel quality measurements that BSC reports its sub-district, place and adjacent cell, therefore for BSC, a large amount of measurement results from MS are arranged, so the processing of BSC is very complicated by MS.
The second, switching has time-delay.Because MS waits for BSC and handles behind BSC reporting measurement result, certain time-delay is arranged during this, the source of this time-delay can be the delay of wireless communication link between MS and the BSC, also can be the delay that BSC causes because the overabundance of data that at a time needs to handle temporarily has little time to handle.
The 3rd, in the above-mentioned flow process, do not allow MS to initiate handoff request according to the concrete condition of oneself.This is because agreement is not supported at present.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of travelling carriage cell switching method, and the time-delay that makes the travelling carriage sub-district switch reduces, and base station controller obtains simplifying to the switching processing process, and allows travelling carriage spontaneously to propose handoff request.
In order to solve the problems of the technologies described above, the invention provides a kind of travelling carriage cell switching method, comprise following steps:
The B travelling carriage is measured needed parameter in the handoff algorithms, and measurement result is calculated according to described handoff algorithms;
The described travelling carriage of C judges whether that according to result of calculation needs switch, if then send handoff request message to network side;
The described network side of D responds the handoff request message of described travelling carriage, carries out the sub-district and switches.
Wherein, also comprise following steps:
The described network side of A is notified needed parameter in the described moving table measuring handoff algorithms.
In the described steps A, what notify that described travelling carriage measures is base station transceiver.
In the described steps A, what notify that described travelling carriage measures is the base station.
Among the described step C,, then do not send the message relevant with switching to described network side if described travelling carriage judges that according to result of calculation needs switch.
Among the described step D, respond described travelling carriage handoff request message be base station controller.
Among the described step D, respond described travelling carriage handoff request message be radio network controller.
Needed parameter comprises the quality of reception, incoming level, travelling carriage and the distance of base station and the combination in any of one or more in the relevant power headroom with incoming level in the described handoff algorithms.
Also comprise following parameter in the described handoff request message:
The purpose cell information of type of message, switch reasons and switching.
By finding that relatively technical scheme difference with the prior art of the present invention is, original judgment task that in BSC the travelling carriage sub-district is switched is transferred among the MS carried out.MS no longer switches the sub-district needed measurement data and sends to BSC, but need directly to judge whether to switch, and switches if desired and just sends handoff request to BSC, and BSC carries out hand-off process according to the request of receiving.
Difference on this technical scheme has brought comparatively significantly beneficial effect, promptly moves to MS by the algorithm handover decisions, will obviously reduce the processing burden of BSC, reduces the cost of BSC greatly.MS can make handover decisions in real time according to corresponding processing, thereby avoids handling the time-delay that brings by BSC.MS does not need to have saved wireless communication bandwidth to a large amount of measurement data of BSC transmission.Under the specific occasion, MS can initiatively initiate handoff request according to the situation of oneself.
Description of drawings
Fig. 1 is the flow chart that switch the travelling carriage sub-district in the prior art;
Fig. 2 is the flow chart of travelling carriage cell switching method according to an embodiment of the invention;
Fig. 3 is the flow chart of switching judging in the travelling carriage cell switching method according to an embodiment of the 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 accompanying drawing.
In handoff procedure, the decisive factor of cause switching has a plurality of, for example the quality of reception, incoming level, MS and the distance of BST and with incoming level relevant power headroom or the like.According to factor, by judging whether decision needs to switch.
Therefore in according to one embodiment of present invention, as shown in Figure 2, first step 210 is to be measured for information about by BTS notice MS, and these information comprise the Radio Link quality of connection of current service cell and the incoming level of neighbor cell etc.;
After this enter step 220, the order of MS response BTS is measured correlation values.
Then enter step 230, MS imports predefined handoff algorithms with measurement result, calculates.
Then enter step 240, MS judges whether to switch according to the output of algorithm, when judgement does not need to switch, enters step 250, does not promptly send any information, and flow process finishes; If judge and to switch, then enter step 260.The algorithm that carries out in BSC in algorithm in this step and the prior art is identical.
Specifically, as shown in Figure 3, in one embodiment of the invention, step 240 comprises following substep:
Step 241: judge whether the quality of reception satisfies switching condition.Be whether result of calculation meets the following conditions:
1.RXQUAL_XX＞L_RXQUAL_XX_H
2.RXLEV_XX＜L_RXLEV_XX_IH
3.XX_TXPWR＝Min(XX_TXPWR_MAX，P)
Wherein RXQUAL is the quality of reception, XX is that value is the variable of UL (up link) or DL (down link), RXQUAL_XX is the quality of reception of Uplink/Downlink link, L_RXQUAL_XX_H is up/downlink quality thresholding, RXLEV_XX is the average value measured of Serving cell incoming level, L_RXLEV_XX_IH is the incoming level thresholding, XX_TXPWR is the transmitting power of travelling carriage in Serving cell, XX_TXPWR_MAX is meant that the maximum of travelling carriage in Serving cell allows transmitting power, P is meant the maximum power of travelling carriage itself, (XX_TXPWR_MAX is that value is got less value between the two at XX_TXPWR_MAX and P P) to Min.
If judge and satisfy above condition simultaneously, then need to switch (switching that quality causes), i.e. step 246.Otherwise enter step 242.
In step 242, judge whether incoming level satisfies switching condition.Be whether result of calculation meets the following conditions:
1.RXLEV_XX＜L_RXLEV_XX_H
2.XX_TXPWR＝Min(XX_TXPWR_MAX，P)
Wherein, L_RXLEV_XX_H is up/descending level threshold.
If judge and satisfy above condition simultaneously, then need to switch (switching that incoming level causes), i.e. step 246.Otherwise enter step 243.
In step 243, judge whether the distance between MS and the BST satisfies switching condition.Be whether result of calculation meets the following conditions:
MS_BS_DIST＞MS_RANGE_MAX
Wherein, MS_BS_DIST is the distance between MS and the BTS, and MS_RANGE_MAX is the threshold value of ultimate range between MS and the BTS.
If judge and satisfy above condition simultaneously, then need to switch (switching that distance causes), i.e. step 246.Otherwise enter step 244.
In step 244, judge whether power headroom satisfies switching condition, and promptly whether result of calculation meets the following conditions:
1.RXLEV_NCELL(n)＞RXLEV_MIN(n)+Max(0，MS_TXPWR_MAX(n)-P)
2.PBGT(n)＞HO_MARGIN(n)
Wherein, RXLEV_NCELL (n) is the incoming level in the n of adjacent area, RXLEV_MIN (n) is the minimum incoming level thresholding in the n of adjacent area, MS_TXPWR_MAX (n) is the maximum transmission power that travelling carriage allows in the n of adjacent area, Max (0, MS_TXPWR_MAX (n)-P) be 0 and MS_TXPWR_MAX (n)-P between get the value of a maximum, PBGT (n) is the power headroom after the path loss of Serving cell deducts the path loss of adjacent area n, and HO_MARGIN (n) is that the path loss of Serving cell deducts minimum threshold after the path loss of adjacent area n.
If judge and satisfy above condition simultaneously, then need to switch (switching that power headroom causes), i.e. step 246.Otherwise judging does not need to switch, i.e. step 245.
In step 260, MS sends handoff request message to BSC, comprises the parameters such as purpose sub-district of type of message, switch reasons and switching in this request message.
After this enter step 270, the handoff request message of BSC response MS is carried out hand-off process, and BSC makes switching and determines that later processing mode is identical in processing mode and the prior art.
Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (9)
1. travelling carriage cell switching method is characterized in that comprising following steps:
The B travelling carriage is measured needed parameter in the handoff algorithms, and according to described handoff algorithms the described parameter of measuring is calculated;
The described travelling carriage of C judges whether that according to result of calculation needs switch, if then send handoff request message to network side;
The described network side of D responds the handoff request message of described travelling carriage, carries out the sub-district and switches.
2. travelling carriage cell switching method according to claim 1 is characterized in that, also comprises following steps:
The described network side of A is notified needed parameter in the described moving table measuring handoff algorithms.
3. travelling carriage cell switching method according to claim 2 is characterized in that, in the described steps A, notifies described travelling carriage to measure by the base station transceiver of described network side.
4. travelling carriage cell switching method according to claim 2 is characterized in that, in the described steps A, notifies described travelling carriage to measure by the base station of described network side.
5. travelling carriage cell switching method according to claim 1 is characterized in that, among the described step C, if described travelling carriage judges that according to result of calculation needs switch, does not then send the message relevant with switching to described network side.
6. travelling carriage cell switching method according to claim 1 is characterized in that, among the described step D, is responded the handoff request message of described travelling carriage by the base station controller of described network side.
7. travelling carriage cell switching method according to claim 1 is characterized in that, among the described step D, is responded the handoff request message of described travelling carriage by the radio network controller of described network side.
8. travelling carriage cell switching method according to claim 1, it is characterized in that needed parameter comprises the quality of reception, incoming level, travelling carriage and the distance of base station and the combination in any of one or more in the relevant power headroom with incoming level in the described handoff algorithms.
9. travelling carriage cell switching method according to claim 1 is characterized in that, also comprises following parameter in the described handoff request message:
The purpose cell information of type of message, switch reasons and switching.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101045321A CN100441021C (en) | 2003-10-16 | 2003-10-16 | Community switching method for mobile station |
| PCT/CN2004/001110 WO2005039224A1 (en) | 2003-10-16 | 2004-09-28 | A method of the ms handover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101045321A CN100441021C (en) | 2003-10-16 | 2003-10-16 | Community switching method for mobile station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1607856A true CN1607856A (en) | 2005-04-20 |
| CN100441021C CN100441021C (en) | 2008-12-03 |
Family
ID=34438472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101045321A Ceased CN100441021C (en) | 2003-10-16 | 2003-10-16 | Community switching method for mobile station |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100441021C (en) |
| WO (1) | WO2005039224A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466810C (en) * | 2005-11-04 | 2009-03-04 | 华为技术有限公司 | Small zone transfering method |
| CN1852568B (en) * | 2005-08-29 | 2010-05-05 | 华为技术有限公司 | Small-zone switching-over method |
| CN1901747B (en) * | 2006-07-21 | 2010-05-26 | 中国移动通信集团公司 | Method for reducing switching delay during mobile terminal small cell switching |
| WO2013177787A1 (en) * | 2012-05-31 | 2013-12-05 | 华为技术有限公司 | Method, device, and system for transmitting measurement information |
| CN104412655A (en) * | 2013-09-27 | 2015-03-11 | 华为技术有限公司 | Device and method for controlling cell switch |
| WO2018059275A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Method, terminal, and network side device for cell reselection in different system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3092662B2 (en) * | 1998-04-10 | 2000-09-25 | 日本電気株式会社 | Handoff control method |
| FI107773B (en) * | 1998-12-11 | 2001-09-28 | Nokia Mobile Phones Ltd | Set handover timing |
| JP3389908B2 (en) * | 2000-01-07 | 2003-03-24 | 日本電気株式会社 | Mobile terminal network selection method and storage medium storing mobile terminal network selection program |
| US6907016B2 (en) * | 2001-04-03 | 2005-06-14 | Telefonaktiebolaget L M Ericsson (Publ) | Mobile IP registration in selected inter-PDSN dormant hand-off cases in a CDMA2000-based cellular telecommunications network |
-
2003
- 2003-10-16 CN CNB2003101045321A patent/CN100441021C/en not_active Ceased
-
2004
- 2004-09-28 WO PCT/CN2004/001110 patent/WO2005039224A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1852568B (en) * | 2005-08-29 | 2010-05-05 | 华为技术有限公司 | Small-zone switching-over method |
| CN100466810C (en) * | 2005-11-04 | 2009-03-04 | 华为技术有限公司 | Small zone transfering method |
| CN1901747B (en) * | 2006-07-21 | 2010-05-26 | 中国移动通信集团公司 | Method for reducing switching delay during mobile terminal small cell switching |
| WO2013177787A1 (en) * | 2012-05-31 | 2013-12-05 | 华为技术有限公司 | Method, device, and system for transmitting measurement information |
| CN104412655A (en) * | 2013-09-27 | 2015-03-11 | 华为技术有限公司 | Device and method for controlling cell switch |
| CN104412655B (en) * | 2013-09-27 | 2018-10-02 | 华为技术有限公司 | The control device and method of cell switching |
| WO2018059275A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Method, terminal, and network side device for cell reselection in different system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100441021C (en) | 2008-12-03 |
| WO2005039224A1 (en) | 2005-04-28 |
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Owner name: SHENZHEN DUNJUN TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HUAWEI TECHNOLOGY CO., LTD. Effective date: 20150626 |
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Effective date of registration: 20150626 Address after: 518000 Nanshan District Nanshan digital cultural industry base, east block, Guangdong, Shenzhen 407 Patentee after: Shenzhen steed Technology Co., Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: Huawei Technologies Co., Ltd. |
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