CN101170830A - Method and device for cell switching - Google Patents
Method and device for cell switching Download PDFInfo
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- CN101170830A CN101170830A CNA2007101875763A CN200710187576A CN101170830A CN 101170830 A CN101170830 A CN 101170830A CN A2007101875763 A CNA2007101875763 A CN A2007101875763A CN 200710187576 A CN200710187576 A CN 200710187576A CN 101170830 A CN101170830 A CN 101170830A
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Abstract
The inventive embodiment discloses a method for cell handover, including: acquiring information of designated neighboring cells along a preset route; when a terminal moves along the preset route and meets cell handover conditions, judging whether the moving velocity of the terminal is greater than the preset value, If so, controlling the handover of the terminal between the designated neighboring cells according to the acquired cell information. The inventive embodiment also discloses a device to realize cell handover. The technical scheme of the inventive embodiment can avoid disconnection when the high-speed moving terminal hands over from cell to cell and improves the customer satisfaction.
Description
Technical field
The present invention relates to the mobile communication technology field, refer to a kind of method and a kind of realization sub-district device for switching that realizes that the sub-district is switched especially.
Background technology
In existing mobile communication network, the portable terminal be meant during measurement report that base station controller (BSC) reports according to base station (BS) will be conversed is switched in the sub-district, as mobile phone, switches to neighbor cell.
Under the situation of portable terminal high-speed mobile, for example the user ride in use on the train of high-speed cruising portable terminal dial or situation about receiving calls under, may need at short notice to switch continuously.
Fig. 1 is that portable terminal needs the scene schematic diagram that switches continuously under the situation of high-speed mobile.As shown in Figure 1, taking bullet train with the user is that example describes: sub-district 1, sub-district 2 and sub-district 3 all cover a section of railway track, and the coverage of three sub-districts has superposed part on railway; Portable terminal along with train apace from A move to the process on B ground, when in the coverage of soon rolling sub-district 1 away from, because the power of sub-district 2 is strong than the power of sub-district 3, so according to existing handoff algorithms 12 the switching to the sub-district can take place at first from the sub-district, switch to sub-district 3 in the time of then in the coverage of soon rolling sub-district 2 away from again.Yet because the translational speed of terminal is too fast, and 2 of sub-districts have covered the short section of railway track of length, therefore 1 when 2 switching is not also finished, have needed to switch to sub-district 3 to the sub-district in the sub-district, at this moment, can cause call drop owing to having little time switching.
In sum, in the prior art, the portable terminal of high-speed motion can cause call drop owing to having little time to carry out the sub-district switching, influences user's satisfaction.
Summary of the invention
The embodiment of the invention provides a kind of method that realizes that the sub-district is switched, and the terminal that this method can guarantee high-speed mobile is being carried out sub-district call drop not when switching, thereby has improved user's satisfaction.
The embodiment of the invention also provides a kind of realization sub-district device for switching, and the terminal that this device can guarantee high-speed mobile is being carried out sub-district call drop not when switching, thereby has improved user's satisfaction.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
The embodiment of the invention discloses a kind of method that realizes that the sub-district is switched, this method comprises:
Obtain along the information of the adjacent distributions sub-district of predetermined paths appointment;
When terminal moves along described predetermined paths, and when satisfying the sub-district switching condition, whether the translational speed of judging described terminal is greater than preset value, if then control described terminal according to the cell information that is obtained and switch between the neighbor cell of described appointment.
The embodiment of the invention also discloses a kind of realization sub-district device for switching, be characterised in that this device comprises: memory module and handover module, wherein,
Memory module is used to obtain and preserve the information along the adjacent distributions sub-district of predetermined paths appointment;
Handover module, be used for moving along described predetermined paths in terminal, and when satisfying the sub-district switching condition, and the translational speed of described terminal is during greater than preset value, obtain along the information of the sub-district of described predetermined paths appointment from memory module, and control described terminal and between the sub-district of described appointment, switch.
As seen from the above technical solution, the embodiment of the invention is this obtains along the information of the adjacent distributions sub-district of predetermined paths appointment; When terminal moves along described predetermined paths, and when satisfying the sub-district switching condition, whether the translational speed of judging described terminal is greater than preset value, be then to control the technical scheme that described terminal is switched between the sub-district of described appointment according to the cell information that is obtained, the terminal that has guaranteed high-speed mobile is being carried out sub-district call drop not when switching, thereby has improved user's satisfaction.
Description of drawings
Fig. 1 is that portable terminal needs the scene schematic diagram that switches continuously under the situation of high-speed mobile;
Fig. 2 is the flow chart of a kind of cell switching method of the embodiment of the invention;
Fig. 3 is the embodiment of the invention is specified the sub-district of adjacent distributions along predetermined paths a schematic diagram;
Fig. 4 is a kind of structured flowchart of realizing the sub-district device for switching of the embodiment of the invention.
Embodiment
Fig. 2 is the flow chart of a kind of cell switching method of the embodiment of the invention.As shown in Figure 2, the method for this sub-district switching can may further comprise the steps:
201, obtain along the information of the adjacent distributions sub-district of predetermined paths appointment.
202, when terminal moves along described predetermined paths, and when satisfying the sub-district switching condition, whether the translational speed of judging described terminal is then to control described terminal according to the cell information that is obtained to switch between the neighbor cell of described appointment greater than preset value.
In step 201 shown in Figure 2, the cell information that is obtained is the information along the adjacent distributions sub-district of predetermined paths appointment.Specify the sub-district of adjacent distributions to be specifically as follows along predetermined paths: to begin along this predetermined paths designated cell one by one from the designated ends of described predetermined paths, until the other end that arrives described predetermined paths, wherein, when specifying next neighbor cell, can from the neighbor cell of current designated cell, select to cover the sub-district of the longest sub-district of the distance of described default circuit as next appointment for the sub-district of current appointment.
In step 202 shown in Figure 2, whether the translational speed of judging terminal can be calculated the translational speed of terminal according to the frequency carrier deviation meter of terminal, and judge that whether the moving velocity of terminal that calculates is greater than preset value during greater than preset value.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Fig. 3 is the embodiment of the invention is specified the sub-district of adjacent distributions along predetermined paths a schematic diagram.Here predetermined paths is meant the mobile alignment of the terminal of high-speed mobile, as high-speed railway etc.As shown in Figure 3, the heavy black line that the A point is ordered to B is represented predetermined paths, with the coverage of corresponding ellipse representation sub-district 1 to sub-district 7.As can be seen from Figure 3 sub-district 1 to the sub-district 7 end distances that all covered route AB from.
According to the scheme of the embodiment of the invention, need specify the sub-district of adjacent distributions along route AB, then be specifically as follows: begin designated cell one by one from the end of route AB, until the other end that arrives route AB along route AB.And along route AB one by one designated cell be specifically as follows: from the neighbor cell of current designated cell, select to cover the sub-district of the longest sub-district of the distance of route AB as next appointment.
Then scene lower edge route AB shown in Figure 3 specify adjacent distributions the sub-district can for: begin at first designated cell 1 from the A point of route AB; From sub-district 2 adjacent and sub-district 5, select then to cover the sub-district of a longest sub-district of route AB distance, should select sub-district 2 to be the sub-district of next appointment as can be seen from Figure 3 as next appointment with sub-district 1; By that analogy, until the B point that arrives route AB.Can find out easily from Fig. 3, utilize the scheme of the embodiment of the invention to specify after, finally the sub-district along the adjacent distributions of route AB appointment is followed successively by: sub-district 1-＞sub-district 2-＞3-＞sub-district, sub-district 4.
Equally, can specify the sub-district of adjacent distributions from the B point of route AB to the A point, the sub-district along the adjacent distributions of route B A appointment in Fig. 3 is followed successively by: sub-district 4-＞sub-district 3-＞2-＞sub-district, sub-district 1.
In practical engineering application, can determine the coverage of sub-district by drive test, and then realize specifying the sub-district of adjacent distributions, and the information configuration of the neighbor cell of appointment is carried out in the base station controller of sub-district switching to control terminal along predetermined paths.
In the specific implementation process, when terminal moves along predetermined paths, and when satisfying the sub-district switching condition:, can use existing sub-district handover scheme if when the translational speed of terminal surpasses threshold value; If the translational speed of terminal has surpassed threshold value, then trigger the scheme that terminal is switched shown in Figure 2 between preassigned sub-district.For example, the frequency shift (FS) Δ f in the measurement report results messages corresponding with current terminal that base station controller (BSC) can report according to base station (BS) calculates the translational speed of this terminal, specifically as shown in Equation (1):
V＝Δf×C/f (1)
Wherein, Δ f is frequency shift (FS), and unit is a hertz;
C is the light velocity, and unit is a meter per second;
F is the carrier frequency frequency of terminal, and unit is a hertz;
V is the translational speed of terminal, and unit is a meter per second.
Find the terminal move along route AB when base station controller BSC and satisfy switching condition, and the translational speed of this terminal then can be switched between preassigned sub-district by control terminal during greater than the threshold value that sets in advance.For example, terminal is when the A point of railway moves to the B point, and its cell switch process is followed successively by: 1 switches to sub-district 2 from the sub-district; 2 switch to sub-district 3 from the sub-district; 3 switch to sub-district 4 from the sub-district.Correspondingly, terminal is when the B point of railway moves to the A point, and its cell switch process is followed successively by: 4 switch to sub-district 3 from the sub-district; 3 switch to sub-district 2 from the sub-district; 2 switch to sub-district 1 from the sub-district.
Certainly when the translational speed of terminal does not surpass threshold value, also can between preassigned sub-district, switch by control terminal.
In addition, when whether definite terminal satisfies the sub-district switching condition, can judge whether needs switch terminal according to the positive and negative of frequency shift (FS) of terminal.When frequency shift (FS) is timing, represent that terminal is current near the base station, do not need to carry out the sub-district and switch; When frequency shift (FS) when negative, the expression terminal is current away from the base station, need carry out the sub-district and switch.
Based on the foregoing description, next provide a kind of composition structure that realizes the sub-district device for switching of the embodiment of the invention.
Fig. 4 is a kind of structured flowchart of realizing the sub-district device for switching of the embodiment of the invention.As shown in Figure 4, this device comprises: memory module 401 and handover module 402, wherein:
Device as shown in Figure 4 can further include speed calculation module 403, is used for obtaining according to the information that the base station reports the frequency shift (FS) of described terminal, and according to the translational speed of the described terminal of described frequency offset computations; At this moment, handover module 401 is used for judging that according to the result that speed calculation module 403 is calculated whether the speed of described terminal is greater than preset value.
Device shown in Figure 4 can be arranged in the base station controller BSC.
According to foregoing description, in existing communication network, as global system for mobile communications (GSM, Global System for Mobile Communication) in the network, the sub-district handoff algorithms that the utilization embodiment of the invention provides just can satisfy the network coverage demand under the high-speed mobile, for example, can satisfy the network coverage demand of high-speed railway, and do not need to set up specially railway combined digital mobile communication technology (GSMR, Global System of Mobile Communication for Railways) system saves cost.
In sum, obtaining in the embodiment of the invention along the information of the adjacent distributions sub-district of predetermined paths appointment; When terminal moves along described predetermined paths, and when satisfying the sub-district switching condition, whether the translational speed of judging described terminal is greater than preset value, be then to control the technical scheme that described terminal is switched between the sub-district of described appointment according to the cell information that is obtained, solved to a certain extent because moving velocity of terminal is too fast, thereby have little time to switch the problem that causes call drop, be the present invention to be the technical scheme terminal that can guarantee high-speed mobile carrying out sub-district call drop not when switching, thereby improved user's satisfaction.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. method that realizes that the sub-district is switched is characterized in that this method comprises:
Obtain along the information of the adjacent distributions sub-district of predetermined paths appointment;
When terminal moves along described predetermined paths, and when satisfying the sub-district switching condition, whether the translational speed of judging described terminal is greater than preset value, if then control described terminal according to the cell information that is obtained and switch between the neighbor cell of described appointment.
2. the method for claim 1 is characterized in that, described sub-district along predetermined paths appointment adjacent distributions comprises:
Begin along this predetermined paths designated cell one by one, until the other end that arrives described predetermined paths from the designated ends of described predetermined paths.
3. method as claimed in claim 2 is characterized in that, described along predetermined paths one by one designated cell comprise: from the neighbor cell of current designated cell, select to cover the sub-district of the longest sub-district of the distance of described default circuit as next appointment.
4. as each described method in the claim 1 to 3, it is characterized in that, describedly judge whether the speed of terminal comprises greater than preset value:, and judge that whether the moving velocity of terminal that calculates is greater than preset value according to the translational speed of the described terminal of frequency offset computations of described terminal.
5. method as claimed in claim 4 is characterized in that, carries the frequency shift (FS) of described terminal in the measurement report results messages that reports in the base station.
6. realize the sub-district device for switching for one kind, be characterised in that this device comprises: memory module and handover module, wherein,
Memory module is used to obtain and preserve the information along the adjacent distributions sub-district of predetermined paths appointment;
Handover module, be used for moving along described predetermined paths, and satisfy the sub-district switching condition, and the translational speed of described terminal is during greater than preset value in terminal, obtain along the information of the sub-district of described predetermined paths appointment from memory module, and control described terminal and between the sub-district of described appointment, switch.
7. device as claimed in claim 6 is characterized in that this device also comprises speed calculation module, is used for obtaining according to the information that the base station reports the frequency shift (FS) of described terminal, and according to the translational speed of the described terminal of described frequency offset computations;
The result that described handover module is used for calculating according to described speed calculation module judges that whether the speed of described terminal is greater than described preset value.
8. as claim 6 or 7 described devices, it is characterized in that this device is arranged in the base station controller.
Priority Applications (1)
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| CNA2007101875763A CN101170830A (en) | 2007-12-03 | 2007-12-03 | Method and device for cell switching |
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| CNA2007101875763A CN101170830A (en) | 2007-12-03 | 2007-12-03 | Method and device for cell switching |
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| CN101951648A (en) * | 2009-07-10 | 2011-01-19 | 中兴通讯股份有限公司 | Cell reselection method and system |
| CN102158918A (en) * | 2010-02-12 | 2011-08-17 | 华为技术有限公司 | Trans-cell switching method and system for communication network |
| CN103210685A (en) * | 2010-11-15 | 2013-07-17 | 三星电子株式会社 | Method and apparatus for communicating with base station based on speed of user equipment in mobile communication system |
| CN103888978A (en) * | 2014-03-12 | 2014-06-25 | 华为技术有限公司 | Measurement result reporting method and UE |
| WO2015109538A1 (en) * | 2014-01-24 | 2015-07-30 | 华为技术有限公司 | Method for information interaction between base stations, and base stations |
| CN105027618A (en) * | 2013-03-12 | 2015-11-04 | 高通股份有限公司 | Method and apparatus for UE measurement assisted handover classification |
| CN105636104A (en) * | 2014-10-27 | 2016-06-01 | 北京市天元网络技术股份有限公司 | Method and system of high-speed mobile user conversation identification in mobile communication network |
| CN105659666A (en) * | 2014-09-30 | 2016-06-08 | 华为技术有限公司 | Mobile terminal controlling method and mobile terminal |
| CN105684517A (en) * | 2015-10-23 | 2016-06-15 | 陈银芳 | Method and system for quickly switching service areas of handset |
| CN107182108A (en) * | 2012-12-27 | 2017-09-19 | 英特尔公司 | Based on the cellular network scan control that around can recognize that radio signal source |
| CN108064055A (en) * | 2016-11-07 | 2018-05-22 | 中国移动通信有限公司研究院 | A kind of switching method and base station |
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| CN109041153A (en) * | 2018-08-13 | 2018-12-18 | 四川飞天联合系统技术有限公司 | A kind of intelligentized wireless network access method |
| WO2019127414A1 (en) * | 2017-12-29 | 2019-07-04 | 北京小米移动软件有限公司 | Method and device for determining residence cell, user equipment, and base station |
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| CN101951648A (en) * | 2009-07-10 | 2011-01-19 | 中兴通讯股份有限公司 | Cell reselection method and system |
| CN102158918A (en) * | 2010-02-12 | 2011-08-17 | 华为技术有限公司 | Trans-cell switching method and system for communication network |
| CN102158918B (en) * | 2010-02-12 | 2013-12-18 | 华为技术有限公司 | Trans-cell switching method and system for communication network |
| US9307518B2 (en) | 2010-11-15 | 2016-04-05 | Samsung Electronics Co., Ltd | Method and apparatus for communicating with base station based on speed of user equipment in mobile communication system |
| CN103210685A (en) * | 2010-11-15 | 2013-07-17 | 三星电子株式会社 | Method and apparatus for communicating with base station based on speed of user equipment in mobile communication system |
| CN107182108A (en) * | 2012-12-27 | 2017-09-19 | 英特尔公司 | Based on the cellular network scan control that around can recognize that radio signal source |
| CN105027618A (en) * | 2013-03-12 | 2015-11-04 | 高通股份有限公司 | Method and apparatus for UE measurement assisted handover classification |
| WO2015109538A1 (en) * | 2014-01-24 | 2015-07-30 | 华为技术有限公司 | Method for information interaction between base stations, and base stations |
| CN103888978A (en) * | 2014-03-12 | 2014-06-25 | 华为技术有限公司 | Measurement result reporting method and UE |
| CN103888978B (en) * | 2014-03-12 | 2018-05-18 | 华为技术有限公司 | A kind of measurement result report method and UE |
| US10142904B2 (en) | 2014-09-30 | 2018-11-27 | Huawei Technologies Co., Ltd. | Mobile terminal control method and mobile terminal |
| CN105659666A (en) * | 2014-09-30 | 2016-06-08 | 华为技术有限公司 | Mobile terminal controlling method and mobile terminal |
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| US10499298B2 (en) | 2014-09-30 | 2019-12-03 | Huawei Technologies Co., Ltd. | Mobile terminal control method and mobile terminal |
| CN105636104A (en) * | 2014-10-27 | 2016-06-01 | 北京市天元网络技术股份有限公司 | Method and system of high-speed mobile user conversation identification in mobile communication network |
| CN105636104B (en) * | 2014-10-27 | 2019-06-07 | 北京市天元网络技术股份有限公司 | The method and system of mobile communications network high speed mobile subscriber call identification |
| WO2017066981A1 (en) * | 2015-10-23 | 2017-04-27 | 陈银芳 | Method and system for handing over service area during fast movement of mobile phone |
| CN105684517A (en) * | 2015-10-23 | 2016-06-15 | 陈银芳 | Method and system for quickly switching service areas of handset |
| CN108064055A (en) * | 2016-11-07 | 2018-05-22 | 中国移动通信有限公司研究院 | A kind of switching method and base station |
| WO2018171200A1 (en) * | 2017-10-31 | 2018-09-27 | 北京小米移动软件有限公司 | Positional relationship determination method and apparatus |
| WO2019127414A1 (en) * | 2017-12-29 | 2019-07-04 | 北京小米移动软件有限公司 | Method and device for determining residence cell, user equipment, and base station |
| US11191017B2 (en) | 2017-12-29 | 2021-11-30 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and apparatus for camping on cell, user equipment, and base station |
| CN110650508A (en) * | 2018-06-11 | 2020-01-03 | 中国移动通信有限公司研究院 | Method for controlling reselection of drive test terminal cell, drive test method, device and drive test instrument |
| CN109041153A (en) * | 2018-08-13 | 2018-12-18 | 四川飞天联合系统技术有限公司 | A kind of intelligentized wireless network access method |
| CN109041153B (en) * | 2018-08-13 | 2021-06-25 | 四川飞天联合系统技术有限公司 | Intelligent wireless network access method |
| CN113516149A (en) * | 2021-03-26 | 2021-10-19 | 苏州振畅智能科技有限公司 | 5G cell switching method based on machine learning |
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