CN102340794B - Cell reselection method and system - Google Patents
Cell reselection method and system Download PDFInfo
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- CN102340794B CN102340794B CN201010238989.1A CN201010238989A CN102340794B CN 102340794 B CN102340794 B CN 102340794B CN 201010238989 A CN201010238989 A CN 201010238989A CN 102340794 B CN102340794 B CN 102340794B
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Abstract
The invention relates to a cell reselection method, which comprises that: a mobile station periodically monitors a system parameter message of a paging channel in an idle state, and acquires a reselection parameter in the system parameter message; and after active set and neighbor set pilot strength measurement, the mobile station performs reselection decision according to the reselection parameter, and if reselection conditions are met, triggers a cell reselection process to reside in a target cell corresponding to a new pilot signal. The invention also relates to a cell reselection system. In the method and the system, the mobile station can read the reselection parameter added into the system parameter message and perform the reselection decision according to the parameter, and a threshold value for triggering cell reselection by the mobile station can be regulated by setting different reselection parameters. Therefore, the telephone traffic of the mobile station can be guided and the mobile station can be guided to reside in the target cell to further balance cell loads in a network and increase the utilization rate of network equipment of the target cell.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of residence reselecting and system of travelling carriage.
Background technology
At present, in CDMA1x system, travelling carriage is issued instruction or the paging request of travelling carriage by monitoring the paging channel message of community, current service pilot tone place to receive community.As shown in Figure 1, if the travelling carriage under idle condition detects a new pilot signal Ec/Io than the signal Ec/Io of current service pilot tone during higher than cell reselection decision threshold 3dB, travelling carriage will triggering cell reuse adoption process, from the monitoring of the pilot tone of persistent district being switched to the monitoring of the pilot tone Dui Xin community, complete system message and the paging of monitoring new community.
What the residence reselecting of above CDMA1x system adopted is fixing pilot channel comparison threshold, this fixed threshold mode cannot guide traffic etc., aspect control mainly by the Ec/Io of pilot signal relatively, do not have to consider as the indoor factor that needs to absorb traffic that waits, control device is dumb.Therefore in Network Programe Design and optimizing process, cannot suitable cell reselection thresholding be set according to network actual environment, with the traffic of reasonable equalizing network.
For example, for the region of having built indoor distributed system, if the mobile subscriber of Idle state from outdoor enter indoor, indoor cell signal must be than more than the original resident strong 3dB of outdoor cell signal, user could reside in indoor cell by cell reselection, and existing cell reselection mode cannot guide indoor user terminal to reside in indoor distributed system, causes the traffic of indoor distribution community easily by peripheral base station, to be absorbed, the traffic of indoor distribution community is low, and network equipment utilance is low.
Summary of the invention
The object of the invention is to propose a kind of residence reselecting and system, can guide travelling carriage, guide it to reside in Target cell, thus the utilance of the network equipment of the cell load in equalizing network and raising Target cell.
For achieving the above object, the invention provides a kind of residence reselecting, comprising:
The system parameters message of travelling carriage periodicity monitoring seek channel under idle condition, and obtain the reselecting parameters in described system parameters message;
Described travelling carriage, after carrying out Active Set and adjacent area collection pilot frequency intensity measuring, carries out gravity treatment judgement according to described reselecting parameters, if meet reselection conditions, triggering cell reuse adoption process, with resident to Target cell corresponding to described new pilot signal.
Further, also comprise:
In the network planning or optimizing process, the network load based on community is to arranging reselecting parameters in the system parameters message in the paging channel of the resident community of described travelling carriage.
Further, also comprise:
In the network planning or optimizing process, based on base station distribution to reselecting parameters being set in the system parameters message in the paging channel of the resident community of described travelling carriage.
Further, described gravity treatment decision operation is specially: the pilot signal of the resident community of described travelling carriage and the new pilot signal detecting are compared, judge that the difference of pilot signal of the community that described new pilot signal and described travelling carriage are resident is whether higher than the expression formula of described reselecting parameters, be to confirm to meet reselection conditions, otherwise confirm not meet reselection conditions.
Further, the expression formula of described reselecting parameters is T
reselect* 0.25-32, wherein T
reselectrepresent reselecting parameters, span is [0,255].
Further, the expression formula of described reselecting parameters is T
reselect* 0.125-16, wherein T
reselectrepresent reselecting parameters, span is [0,255].
Further, if a plurality of new pilot signals detected, the strongest pilot signal in the pilot signal of the resident community of described travelling carriage and a plurality of new pilot signal that detects is compared.
For achieving the above object, the invention provides a kind of cell reselection system, comprising:
Parameter arranges module, and at the network planning or optimizing process, the network load based on community or base station distribution are to arranging reselecting parameters in the system parameters message in the paging channel of the resident community of described travelling carriage;
Travelling carriage, the system parameters message of periodicity monitoring seek channel under idle condition, and obtain the reselecting parameters in described system parameters message, after carrying out Active Set and adjacent area collection pilot frequency intensity measuring, according to described reselecting parameters, carry out gravity treatment judgement, if meet reselection conditions, triggering cell reuse adoption process, with resident to Target cell corresponding to described new pilot signal.
Further, described travelling carriage specifically comprises:
Monitor module, for the system parameters message of periodicity monitoring seek channel under idle condition;
Parameter acquisition module, for obtaining the reselecting parameters of described system parameters message;
Gravity treatment judging module, for after carrying out Active Set and adjacent area collection pilot frequency intensity measuring, carries out gravity treatment judgement according to described reselecting parameters;
Cell reselection module, while meeting reselection conditions for determining in described gravity treatment judging module, triggering cell reuse adoption process, with resident Target cell corresponding to described new pilot signal of arriving.
Further, described cell reselection module specifically comprises:
Pilot tone comparison module, for comparing the pilot signal of the resident community of described travelling carriage and the new pilot signal detecting;
Whether reselection conditions is confirmed module, for the difference of pilot signal that judges the community that described new pilot signal and described travelling carriage are resident, higher than the expression formula of described reselecting parameters, be to confirm to meet reselection conditions, otherwise confirmation does not meet reselection conditions.
Based on technique scheme, the reselecting parameters that travelling carriage of the present invention adds in can reading system parameter message, and carry out gravity treatment judgement according to this parameter, by being set, different reselecting parameters can adjust the thresholding of travelling carriage triggering cell gravity treatment.So just can guide the traffic of travelling carriage, guiding travelling carriage resides in Target cell, thus the utilance of the network equipment of the cell load in equalizing network and raising Target cell.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of CDMA1x cell reselection decision threshold in prior art.
Fig. 2 is the schematic flow sheet of an embodiment of small area of the present invention reselecting method.
Fig. 3 is the schematic diagram of reselecting method embodiment small area gravity treatment decision threshold in small area of the present invention.
Fig. 4 is the concrete structure schematic diagram of travelling carriage in an embodiment of gravity treatment system in small area of the present invention.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
In the system parameters message of the paging channel of Zhong of the present invention community (System ParametersMessage), added new reselecting parameters T
reselect, this parameter arranges in the network planning or optimizing process.In the network planning or optimizing process, can arrange by the network load based on community, for example: for community, be the situation of high load capacity community, the T of less value can be set
reselectparameter, so just can make the easier gravity treatment of travelling carriage that resides in this community to neighbor cell; And for load compare Di community, the T of higher value can be set
reselectparameter, make to reside in the travelling carriage of this community more of a specified duration reside in this community.
According to cell load, carrying out arranging of reselecting parameters can guide the traffic to travelling carriage effectively, and guiding travelling carriage resides in Target cell, thus the cell load in equalizing network.
In the network planning or optimizing process, also can arrange based on base station distribution, for example, for community, indoor station, because telephone traffic is less, utilization rate of equipment and installations is lower, and therefore the T of higher value can be set
reselectparameter, thus make that travelling carriage is easier to be garrisoned in this community, indoor station, thus improve the network equipment utilization rate of Liao Gai community.
As shown in Figure 2, be the schematic flow sheet of an embodiment of small area of the present invention reselecting method.Provided in the present embodiment cell re-selection procedure, specifically comprised:
The system parameters message of step 101, travelling carriage periodicity monitoring seek channel under idle condition, and obtain the reselecting parameters in described system parameters message;
Step 102, described travelling carriage, after carrying out Active Set and adjacent area collection pilot frequency intensity measuring, carry out gravity treatment judgement according to described reselecting parameters, if meet reselection conditions, triggering cell reuse adoption process, with resident to Target cell corresponding to described new pilot signal.
Before the system parameters message mentioned in the paging channel of community be added reselecting parameters, travelling carriage just can obtain this parameter when periodicity monitoring seek channel.Travelling carriage is after Active Set and adjacent area collection pilot frequency intensity measuring, can carry out gravity treatment judgement according to reselecting parameters, and the reselecting parameters of each community can arrange as required in advance, but not as the mode of the fixing pilot channel comparison threshold of available technology adopting, therefore more flexible, and can realize traffic is guided, and then the traffic load of balanced minizone, improve the utilization rate of equipment and installations of indoor cell.
Reselecting parameters T
reselectexcept arranging according to the load of community or base station distribution, the situations such as network environment that can also be comprehensively concrete, base station covering, network load arrange.
In gravity treatment decision operation in step 102, can compare (if a plurality of new pilot signals detected the pilot signal of the resident community of travelling carriage and the new pilot signal detecting, the strongest pilot signal in the pilot signal of the resident community of travelling carriage and a plurality of new pilot signal that detects is compared), judge that the difference of pilot signal of the community that new pilot signal and described travelling carriage are resident is whether higher than the expression formula of reselecting parameters, be to confirm to meet reselection conditions, otherwise confirm not meet reselection conditions.
Wherein, the expression formula as the reselecting parameters of gravity treatment decision threshold can be T
reselect* 0.25-32, wherein T
reselectrepresent reselecting parameters, position is long can be 8bit, and span is [0,255], can require this parameter scope to be set for [132,148], and the scope of result of calculation is exactly [1,5].As shown in Figure 3, be the schematic diagram of reselecting method embodiment small area gravity treatment decision threshold in small area of the present invention.Consider the step-length problem of gravity treatment decision threshold, and the span of the result of this expression formula of expectation, be convenient to apply in a flexible way, can the expression formula of reselecting parameters be adjusted and is out of shape, for example adopt T
reselect* 0.125-16 is as gravity treatment decision threshold, and this formula has adopted less step-length.The parameter that realizes different accuracy by different step-lengths is set arranges.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
As shown in Figure 4, be the concrete structure schematic diagram of travelling carriage in an embodiment of gravity treatment system in small area of the present invention.In the present embodiment, cell reselection system can comprise: parameter arranges module and travelling carriage, wherein, parameter arranges module at the network planning or optimizing process, and the network load based on community or base station distribution are to arranging reselecting parameters in the system parameters message in the paging channel of the resident community of described travelling carriage.Travelling carriage is responsible for the system parameters message of periodicity monitoring seek channel under idle condition, and obtain the reselecting parameters in described system parameters message, after carrying out Active Set and adjacent area collection pilot frequency intensity measuring, according to described reselecting parameters, carry out gravity treatment judgement, if meet reselection conditions, triggering cell reuse adoption process, with resident to Target cell corresponding to described new pilot signal.
Travelling carriage can specifically comprise: monitor module 1, for the system parameters message of periodicity monitoring seek channel under idle condition; Parameter acquisition module 2, for obtaining the reselecting parameters of described system parameters message; Gravity treatment judging module 3, for after carrying out Active Set and adjacent area collection pilot frequency intensity measuring, carries out gravity treatment judgement according to described reselecting parameters; Cell reselection module 4, while meeting reselection conditions for determining in described gravity treatment judging module, triggering cell reuse adoption process, with resident Target cell corresponding to described new pilot signal of arriving.
Wherein, cell reselection module can specifically comprise: pilot tone comparison module, for the pilot signal of the resident community of described travelling carriage and the new pilot signal detecting are compared; Whether reselection conditions is confirmed module, for the difference of pilot signal that judges the community that described new pilot signal and described travelling carriage are resident, higher than the expression formula of described reselecting parameters, be to confirm to meet reselection conditions, otherwise confirmation does not meet reselection conditions.
Embodying with arranging all of reselecting parameters of the expression formula of reselecting parameters can, with reference to aforementioned residence reselecting embodiment, just no longer have been described in detail here.
The reselecting parameters that the travelling carriage of the embodiment of the present invention adds in can reading system parameter message, and carry out gravity treatment judgement according to this parameter, by being set, different reselecting parameters can adjust the thresholding of travelling carriage triggering cell gravity treatment.So just can guide the traffic of travelling carriage, guiding travelling carriage resides in Target cell, thus the utilance of the network equipment of the cell load in equalizing network and raising Target cell.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present invention; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (4)
1. a residence reselecting, comprising:
In the network planning or optimizing process, the network load based on community or base station distribution are to arranging reselecting parameters in the system parameters message in the paging channel of the resident community of travelling carriage;
Described travelling carriage is periodically monitored the system parameters message of the paging channel of the resident community of described travelling carriage under idle condition, and obtains resident reselecting parameters corresponding to community of travelling carriage described in described system parameters message;
Described travelling carriage, after carrying out Active Set and adjacent area collection pilot frequency intensity measuring, carries out gravity treatment judgement according to described reselecting parameters, if meet reselection conditions, triggering cell reuse adoption process, with resident to new Target cell corresponding to pilot signal;
Described gravity treatment decision operation is specially: the pilot signal of the resident community of described travelling carriage and the new pilot signal detecting are compared, judge that the difference of pilot signal of the community that described new pilot signal and described travelling carriage are resident is whether higher than the expression formula of described reselecting parameters, be to confirm to meet reselection conditions, otherwise confirm not meet reselection conditions;
If a plurality of new pilot signals detected, the strongest pilot signal in the pilot signal of the resident community of described travelling carriage and a plurality of new pilot signal that detects is compared.
2. residence reselecting according to claim 1, the expression formula of wherein said reselecting parameters is T
reselect* 0.25-32, wherein T
reselectrepresent reselecting parameters, span is [0,255].
3. residence reselecting according to claim 1, the expression formula of wherein said reselecting parameters is T
reselect* 0.125-16, wherein T
reselectrepresent reselecting parameters, span is [0,255].
4. a cell reselection system, comprising:
Parameter arranges module, and at the network planning or optimizing process, the network load based on community or base station distribution are to arranging reselecting parameters in the system parameters message in the paging channel of the resident community of travelling carriage;
Travelling carriage, for periodically monitor the system parameters message of the paging channel of the resident community of described travelling carriage under idle condition, and obtain resident reselecting parameters corresponding to community of travelling carriage described in described system parameters message, after carrying out Active Set and adjacent area collection pilot frequency intensity measuring, according to described reselecting parameters, carry out gravity treatment judgement, if meet reselection conditions, triggering cell reuse adoption process, with resident to new Target cell corresponding to pilot signal;
Described travelling carriage specifically comprises:
Monitor module, for periodically monitor the system parameters message of the paging channel of the resident community of described travelling carriage under idle condition;
Parameter acquisition module, for obtaining resident reselecting parameters corresponding to community of travelling carriage described in described system parameters message;
Gravity treatment judging module, for after carrying out Active Set and adjacent area collection pilot frequency intensity measuring, carries out gravity treatment judgement according to described reselecting parameters;
Cell reselection module, while meeting reselection conditions for determining in described gravity treatment judging module, triggering cell reuse adoption process, with resident Target cell corresponding to described new pilot signal of arriving;
Wherein said cell reselection module specifically comprises:
Pilot tone comparison module, for comparing the pilot signal of the resident community of described travelling carriage and the new pilot signal detecting;
Whether reselection conditions is confirmed module, for the difference of pilot signal that judges the community that described new pilot signal and described travelling carriage are resident, higher than the expression formula of described reselecting parameters, be to confirm to meet reselection conditions, otherwise confirmation does not meet reselection conditions;
If a plurality of new pilot signals detected, the strongest pilot signal in the pilot signal of the resident community of described travelling carriage and a plurality of new pilot signal that detects is compared.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103313338B (en) * | 2012-03-15 | 2018-08-03 | 南京中兴新软件有限责任公司 | The method and device of cell reselection |
| CN103596229B (en) * | 2012-08-13 | 2016-10-05 | 重庆重邮信科通信技术有限公司 | Residence reselecting and mobile terminal |
| CN103228007A (en) * | 2013-04-03 | 2013-07-31 | 大唐移动通信设备有限公司 | Switching or reselection method and equipment |
| CN104365132B (en) * | 2013-05-07 | 2018-05-18 | 华为技术有限公司 | A kind of cell accessing method, device and system |
| JP6546291B2 (en) * | 2015-05-19 | 2019-07-17 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Paging method, user equipment, base station, and core network device |
| WO2017063125A1 (en) * | 2015-10-12 | 2017-04-20 | 华为技术有限公司 | Cell reselection method and user equipment |
| CN106888484B (en) * | 2015-12-15 | 2020-08-07 | 联芯科技有限公司 | Method and system for reselecting resident cell and applicable mobile equipment |
| CN108811008A (en) * | 2017-05-05 | 2018-11-13 | 捷开通讯(深圳)有限公司 | Communications status conversion method and device |
| CN116347538B (en) * | 2023-03-28 | 2024-02-09 | 江苏亨鑫无线技术有限公司 | Load management method and system for idle state and non-active state terminals |
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| CN1518367A (en) * | 2003-01-14 | 2004-08-04 | 华为技术有限公司 | Multi-band small range selection method |
| CN101772081A (en) * | 2008-12-31 | 2010-07-07 | 中兴通讯股份有限公司 | Method and system for dynamically balancing cell load in wireless network |
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| JP2005328525A (en) * | 2004-05-04 | 2005-11-24 | Samsung Electronics Co Ltd | Method and apparatus for selecting optimal scheduling cells for soft handover terminal in uplink packet transmission system |
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| CN1518367A (en) * | 2003-01-14 | 2004-08-04 | 华为技术有限公司 | Multi-band small range selection method |
| CN101772081A (en) * | 2008-12-31 | 2010-07-07 | 中兴通讯股份有限公司 | Method and system for dynamically balancing cell load in wireless network |
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