CN102457927A - Method for preventing ping-pong reselection - Google Patents
Method for preventing ping-pong reselection Download PDFInfo
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- CN102457927A CN102457927A CN2010105265104A CN201010526510A CN102457927A CN 102457927 A CN102457927 A CN 102457927A CN 2010105265104 A CN2010105265104 A CN 2010105265104A CN 201010526510 A CN201010526510 A CN 201010526510A CN 102457927 A CN102457927 A CN 102457927A
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Abstract
The invention discloses a method for preventing ping-pong reselection. A ping-pong environment is identified by recording the time of a mobile terminal in a first communication network system and a second communication network system; in the ping-pong environment, ping-pong protection is started and a reselection threshold value is increased; the increased threshold value is gradually reduced as the time goes by; however, if reselection happens again during the reduction of the threshold value, the reselection threshold value can be increased automatically; when the mobile terminal stays on the first communication network system or the second communication network system for fixed time, the ping-pong protection disappears automatically; therefore, a threshold increased value is adaptively adjusted according to a specific situation of a network so as to prevent the ping-pong reselection.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of method that prevents ping-pong reselection based on different system.
Background technology
At present, in GSM,, can come self current resident network is carried out gravity treatment according to the factors such as quality of network signal quality if portable terminal can be supported the mobile communications network (like dual-mode handset) of two kinds of different systems.For example portable terminal is in the second generation communications network system (2G) at present; And the network signal of the second generation mobile communcations system in the current region is during than the network signal difference of third generation communications network system (3G), and portable terminal can be selected to insert in the 3G (Third Generation) Moblie network.And after portable terminal successfully gets into the 3G (Third Generation) Moblie network; When if the signal of the second generation mobile communications network of region is superior to the signal of 3G (Third Generation) Moblie network again; Portable terminal can be selected again to insert in the second generation mobile communications network, and visible portable terminal is to select a better quality of signal network as self current resident network to the purpose that network carries out gravity treatment.
In the prior art; Because portable terminal has the gravity treatment behavior between above-mentioned different system; Therefore; When the signal of the signal of the second generation mobile communications network in certain zone and 3G (Third Generation) Moblie network was all unstable, the terminal that just might be moved was selected between two network systems continually, thereby causes " ping-pong reselection " effect.Because the ping-pong reselection effect can increase network load, influences network quality, thereby can increase user's off-grid probability, the particularly called percent of call lost can be very high, greatly influenced user's communications experience.Simultaneously, the power consumption of portable terminal also can increase greatly.
For this kind phenomenon, the regulation of existing 3GPP agreement: the 3G system is gone back in inaccurate gravity treatment in the 5s that selects back 2G from 3G, and the interior meeting of 15s gravity treatment then threshold value need increase 5dB.The evaluation criteria of gravity treatment is exactly 5s in the above-mentioned agreement; Yet almost not effect of the regulation of inaccurate gravity treatment in this 5s; Because the regulation that the 3G system is gone back in inaccurate gravity treatment in the 5s can't stop the gravity treatment in a period of time after the 5s; And system generally the identification of ping-pong reselection to be had more than be 5s, i.e. supposition system thinks between inherent 2G of 30s and 3G system that gravity treatment is a ping-pong reselection back and forth, the 5s time of agreement regulation is to stop 5s to the ping-pong reselection of 30s in the time so.And the threshold value of increase 5dB; Also can only be in 15s effectively; And because the complicacy of wireless environment, and the property relationship of portable terminal itself, the threshold value that increases 5dB usually is not enough; Prior art can't come self adaptation adjustment thresholding added value to prevent the generation of ping-pong reselection according to the concrete condition of network.
Summary of the invention
The technical problem that the present invention will solve is to propose a kind of method that prevents ping-pong reselection, can't come the problem of self adaptation adjustment thresholding added value to prevent that ping-pong reselection from taking place according to the concrete condition of network in order to solve prior art.
For addressing the above problem, the invention provides a kind of method that prevents ping-pong reselection, this method comprises the steps:
First and second timer is set, is in the time in first and second communications network system in order to the statistics portable terminal respectively;
When first communications network system is converted to the second communication network system, start first timer;
If generation systems gravity treatment when first timer activates then starts second timer and closes first timer;
If generation systems gravity treatment again when second timer activates will be punished that then side-play amount is made as first value, and started first timer;
If system's gravity treatment has taken place again, will punish that then side-play amount increases by first preset value, and restart first timer at preset time; If in the not generation systems gravity treatment of above-mentioned preset time, will punish that then side-play amount reduces by second preset value, and restart first timer;
Continue to judge whether system's gravity treatment to have taken place again at preset time; And by corresponding increase of a last step or minimizing punishment side-play amount; Be zero to the punishment offset minus extremely, thereby do not restart first timer, the absolute thresholding of first communications network system recovers normal.
According to above-mentioned principal character, said first communications network system is a third generation communications network system, and the second communication network system is a second generation communications network system.
According to above-mentioned principal character, punish that wherein first value, punishment first preset value that side-play amount increased of side-play amount, second preset value of punishment side-play amount minimizing are fixed value
According to above-mentioned principal character, punish that wherein first value of side-play amount is 9dB, punishment first preset value that side-play amount increased is the penalty value step-length, is 9dB, second preset value that the punishment side-play amount reduces is 3dB.
According to above-mentioned principal character, wherein the second generation communications network system process that is transformed into third generation communications network system comprises the process that gravity treatment failure that second generation communications network system is transformed into second generation communications network system to reuse adoption process and the third generation communications network system of third generation communications network system is afterwards failed and returned.
According to above-mentioned principal character, wherein third generation communications network system is transformed into second generation communications network system process and comprises that third generation communications network system is transformed into the gravity treatment of second generation communications network system and is transformed into the process of failing and return in third generation communications network system gravity treatment failure back with second generation communications network system.
Compared with prior art; The present invention discerns the table tennis environment through the record time of portable terminal in first and second communications network system, and under the table tennis environment, starts the table tennis protection; Raise the gravity treatment threshold value, and the threshold value of raising can reduce as time goes by and progressively; If but gravity treatment takes place again in the centre; Can increase the gravity treatment threshold value automatically so; When portable terminal continuously first or the second communication network system on stopped the set time after; The table tennis protection can disappear automatically, so according to the concrete condition of network, comes the problem of self adaptation adjustment thresholding added value to prevent that ping-pong reselection from taking place.
Description of drawings
Fig. 1 prevents the flow chart of the method for ping-pong reselection for embodiment of the present invention.
Fig. 2 is system's conversion sketch map of a specific embodiment of embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the invention is described.
See also Fig. 1 and shown in Figure 2, Fig. 1 prevents the flow chart of the method for ping-pong reselection for embodiment of the present invention, and Fig. 2 is the imbody of flow chart shown in Figure 1, and wherein this method is divided into three phases:
Phase I comprises the steps: for table tennis environment the stage of recognition
Step S100 through first and second timer T, S are set, is in the time in first and second communications network system in order to the statistics portable terminal respectively;
Step S101 continues to judge whether to take place to be converted to second communication network system (2G) from first communications network system (3G);
Step S102 in this way, then starts the first timer T;
Step S103 continues to judge whether system's gravity treatment has taken place when the first timer T activates;
Step S104 in this way, then starts the second timer S and closes the first timer T;
Whether again step S105 judges when the second timer S activates generation systems gravity treatment; As otherwise return step S101;
Step S106 in this way, will punish that then side-play amount is made as first value; It promptly also is the initial value of pinp_offset; And start the first timer T, in the present embodiment, the initial value of this pinp_offset is 9dB; The gravity treatment threshold value of system like this is that the initial gravity treatment threshold value of system's setting adds the value of pinp_offset, thereby has increased the gravity treatment threshold value thus.
Second stage comprises the steps: for the table tennis protection stage
Step S107 judges whether system's gravity treatment has taken place again in preset time N;
Step S108 in this way, will punish that then side-play amount increases by first preset value; Promptly increase the penalty value step-length; New punishment side-play amount=punishment side-play amount+penalty value step-length, and restart the first timer T, first preset value (being the penalty value step-length) is 6dB in the present embodiment;
Step S109 as not, will punish that then side-play amount reduces by second preset value, and restart the first timer T that this second preset value is 3dB in the present embodiment.
Phase III comprises the steps: for table tennis protection ending phase
Step S110 judges whether the punishment side-play amount is kept to zero; As not, then return step S107, judge whether system's gravity treatment has taken place again in preset time N, and set by step S108 and step S109 corresponding increase or reduce punish side-play amount;
Step S111 if the punishment offset minus is zero, thereby does not restart the first timer T, and the absolute thresholding of first communications network system (being the initial gravity treatment threshold value that system is provided with) recovers normal, and the protection process of once rattling finishes.
In the specific implementation, second preset value that first value of above-mentioned punishment side-play amount, punishment first preset value that side-play amount increased, punishment side-play amount reduce is a fixed value, is perhaps controlled by the parameter in the system by system's setting.In the above embodiments, first value of punishment side-play amount can be made as 9dB, and punishment first preset value that side-play amount increased is the penalty value step-length, can be made as 9dB, and second preset value that the punishment side-play amount reduces can be made as 3dB.Simultaneously; This method is not distinguished the reuse adoption process of portable terminal under packet transfer mode (packet transfer) and idle pulley (IDLE), and the second generation communications network system process that is transformed into third generation communications network system comprises the process that gravity treatment failure back failure that second generation communications network system is transformed into second generation communications network system to the reuse adoption process and the third generation communications network system of third generation communications network system is returned; Third generation communications network system is transformed into second generation communications network system process and comprises that third generation communications network system is transformed into the gravity treatment of second generation communications network system and second generation communications network system is transformed into the process that third generation communications network system gravity treatment failure back failure is returned; But consider that it not is to measure the process of assessing generation through TD (many yards of time-divisions) communication system that third generation communications network system is transformed into the process of returning of failing after the gravity treatment of second generation communications network system is failed; So only carry out the included action of above-mentioned table tennis environment the stage of recognition during this process, do not carry out table tennis included action of protection stage.
Can know by above-mentioned method; Whether the duration that the present invention exists in a communications network system according to portable terminal reaches gravity treatment takes place and dynamic adjustment punishment side-play amount; Reach the purpose of dynamic adjustment gravity treatment threshold value thus, thus the problem of self adaptation adjustment gravity treatment threshold value to prevent that ping-pong reselection from taking place.
Compared with prior art; The present invention discerns the table tennis environment through the record time of portable terminal in first and second communications network system, and under the table tennis environment, starts the table tennis protection; Raise the gravity treatment threshold value, and the threshold value of raising can reduce as time goes by and progressively; If but gravity treatment takes place again in the centre; Can increase the gravity treatment threshold value automatically so; When portable terminal continuously first or the second communication network system on stopped the set time after; The table tennis protection can disappear automatically, so according to the concrete condition of network, comes the problem of self adaptation adjustment thresholding added value to prevent that ping-pong reselection from taking place.
It is understandable that, concerning those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (5)
1. method that prevents ping-pong reselection, this method comprises the steps:
First and second timer is set, is in the time in first and second communications network system in order to the statistics portable terminal respectively;
When first communications network system is converted to the second communication network system, start first timer;
If generation systems gravity treatment when first timer activates then starts second timer and closes first timer;
If generation systems gravity treatment again when second timer activates will be punished that then side-play amount is made as first value, and started first timer;
If system's gravity treatment has taken place again, will punish that then side-play amount increases by first preset value, and restart first timer at preset time; If in the not generation systems gravity treatment of above-mentioned preset time, will punish that then side-play amount reduces by second preset value, and restart first timer;
Continue to judge whether system's gravity treatment to have taken place again at preset time; And by corresponding increase of a last step or minimizing punishment side-play amount; Be zero to the punishment offset minus extremely, thereby do not restart first timer, the absolute thresholding of first communications network system recovers normal.
2. the method that prevents ping-pong reselection as claimed in claim 1 is characterized in that: said first communications network system is a third generation communications network system, and the second communication network system is a second generation communications network system.
3. the method that prevents ping-pong reselection as claimed in claim 1 is characterized in that: second preset value that first value of punishment side-play amount, punishment first preset value that side-play amount increased, punishment side-play amount reduce is a fixed value.
4. the method that prevents ping-pong reselection as claimed in claim 2 is characterized in that: the process that second generation communications network system is transformed into third generation communications network system comprises the process that gravity treatment failure back failure that second generation communications network system is transformed into second generation communications network system to the reuse adoption process and the third generation communications network system of third generation communications network system is returned.
5. the method that prevents ping-pong reselection as claimed in claim 2 is characterized in that: wherein third generation communications network system is transformed into second generation communications network system process and comprises that third generation communications network system is transformed into the gravity treatment of second generation communications network system and second generation communications network system and is transformed into the process that third generation communications network system gravity treatment failure back failure is returned.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103906156A (en) * | 2012-12-25 | 2014-07-02 | 中国移动通信集团贵州有限公司 | Network reselection method and apparatus, and terminal |
| CN104144452A (en) * | 2013-05-08 | 2014-11-12 | 展讯通信（上海）有限公司 | Inter-modal ping-pong reselection recognition and prevention method and device for communication terminal |
| CN104144451A (en) * | 2013-05-08 | 2014-11-12 | 展讯通信（上海）有限公司 | Inter-modal ping-pong reselection recognition and prevention method and device for communication terminal |
| CN104519510A (en) * | 2013-09-30 | 2015-04-15 | 中国移动通信集团北京有限公司 | Cell reselection parameter optimizing method and device |
| CN105027625A (en) * | 2013-03-04 | 2015-11-04 | Lg电子株式会社 | Cell reselection method and user equipment thereof |
| CN105530671A (en) * | 2015-12-14 | 2016-04-27 | 福建星网锐捷网络有限公司 | Method for inhibiting ping-pong handover and mobility management entity |
| CN107371202A (en) * | 2017-08-15 | 2017-11-21 | 维沃移动通信有限公司 | A kind of method and mobile terminal of mobile terminal gravity treatment LTE cells |
| CN107548109A (en) * | 2016-06-28 | 2018-01-05 | 大唐移动通信设备有限公司 | A kind of cell switching method and device |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103906156A (en) * | 2012-12-25 | 2014-07-02 | 中国移动通信集团贵州有限公司 | Network reselection method and apparatus, and terminal |
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| CN105027625B (en) * | 2013-03-04 | 2018-11-27 | Lg 电子株式会社 | Residence reselecting and its user equipment |
| CN104144451B (en) * | 2013-05-08 | 2017-11-21 | 展讯通信（上海）有限公司 | Ping-pong reselection identification, the method and apparatus prevented between the pattern of communication terminal |
| CN104144452A (en) * | 2013-05-08 | 2014-11-12 | 展讯通信（上海）有限公司 | Inter-modal ping-pong reselection recognition and prevention method and device for communication terminal |
| CN104144451A (en) * | 2013-05-08 | 2014-11-12 | 展讯通信（上海）有限公司 | Inter-modal ping-pong reselection recognition and prevention method and device for communication terminal |
| CN104144452B (en) * | 2013-05-08 | 2017-09-08 | 展讯通信（上海）有限公司 | Ping-pong reselection identification, the method and apparatus prevented between the pattern of communication terminal |
| CN104519510A (en) * | 2013-09-30 | 2015-04-15 | 中国移动通信集团北京有限公司 | Cell reselection parameter optimizing method and device |
| CN104519510B (en) * | 2013-09-30 | 2018-02-23 | 中国移动通信集团北京有限公司 | Method and device for optimizing cell reselection parameters |
| CN105530671A (en) * | 2015-12-14 | 2016-04-27 | 福建星网锐捷网络有限公司 | Method for inhibiting ping-pong handover and mobility management entity |
| CN105530671B (en) * | 2015-12-14 | 2019-03-01 | 福建星网锐捷网络有限公司 | Inhibit the method and mobility management entity of pingpang handoff |
| CN107548109A (en) * | 2016-06-28 | 2018-01-05 | 大唐移动通信设备有限公司 | A kind of cell switching method and device |
| CN107548109B (en) * | 2016-06-28 | 2020-04-10 | 大唐移动通信设备有限公司 | Cell switching method and device |
| CN107371202A (en) * | 2017-08-15 | 2017-11-21 | 维沃移动通信有限公司 | A kind of method and mobile terminal of mobile terminal gravity treatment LTE cells |
| CN107371202B (en) * | 2017-08-15 | 2019-03-05 | 维沃移动通信有限公司 | A kind of method and mobile terminal of mobile terminal gravity treatment LTE cell |
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| CN102457927B (en) | 2014-07-02 |
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