CN106888484B - Method and system for reselecting resident cell and applicable mobile equipment - Google Patents
Method and system for reselecting resident cell and applicable mobile equipment Download PDFInfo
- Publication number
- CN106888484B CN106888484B CN201510934169.9A CN201510934169A CN106888484B CN 106888484 B CN106888484 B CN 106888484B CN 201510934169 A CN201510934169 A CN 201510934169A CN 106888484 B CN106888484 B CN 106888484B
- Authority
- CN
- China
- Prior art keywords
- cell
- value
- preset
- count value
- currently
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
-
- 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
The invention provides a method and a system for reselecting a resident cell and applicable mobile equipment. According to the method, the system determines a statistic value of the quality evaluation of the current resident cell based on the obtained evaluation parameter of the paging channel; adjusting a count value for reflecting whether to reselect the resident cell or not according to the comparison result of the statistic value and a preset threshold value; and judging whether the adjusted count value is smaller than a preset count threshold or not, and determining whether the cell is reselected to camp. The invention can flexibly trigger the reselection operation in advance when the service cell has poor receiving quality and strong receiving level, so that the mobile equipment can reside in a better cell and avoid receiving paging bad frames for a long time.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and a system for reselecting a camped cell, and a mobile device suitable for the method and the system.
Background
The downlink signaling fault is one of cell reselection modes of the GSM system. The downlink signaling fault criterion is evaluated according to the value of a downlink signaling fault counter DSC to determine whether to reselect. Specifically, when a mobile device selects a cell, DSC initializes to [90/BS _ PA _ MFRMS ] rounding, where BS _ PA _ MFRMS is the number of multiframes of 51TDMA frames between which the base station transmits paging information to mobile devices of the same paging group. The mobile device adjusts the DSC based on whether the decoding on the paging sub-channel is detected to be successful or not, when the DSC is lower than a threshold value, the mobile device judges that a downlink signaling fault occurs, and the mobile device starts to reselect the cell.
The downlink signaling fault can avoid the situation that the mobile device always resides in a situation that the receiving quality of the paging channel is continuously poor. However, the current network environment varies, and other scenes cannot be solved by DSC alone. For example, in a scenario where a bad frame probabilistically appears on the paging channel and DSC is not satisfied below a threshold, it may affect the mobile device to be called or service initiated on the camping cell. For another example, for a requirement that a DSC is lower than a threshold value only by requiring multiple paging cycles when there are many bad frames on a paging channel, when a mobile device is close to and higher than the DSC, the called party or the service initiation may also be affected. Accordingly, there is a need for improvements in the art.
Disclosure of Invention
The embodiment of the invention provides a method and a system for reselecting a resident cell and applicable mobile equipment, which are used for solving the problem that the resident cell of the mobile equipment cannot be adjusted in time only by monitoring a DSC in the prior art.
In view of the above problem, the present invention provides a method for reselecting a camped cell, including: determining a statistic value of the quality evaluation of the current resident cell based on the obtained evaluation parameter of the paging channel; adjusting a count value for reflecting whether to reselect the resident cell or not according to the comparison result of the statistic value and a preset threshold value; and judging whether the adjusted count value is smaller than a preset count threshold or not, and determining whether the cell is reselected to camp.
Preferably, the determining the statistic value of the quality evaluation of the currently camped cell based on the obtained evaluation parameter of the paging channel includes: and determining the quality evaluation statistic value of the current resident cell by adopting an iteration mode based on the last acquired statistic value and the currently acquired evaluation parameter.
Preferably, the determining, in an iterative manner, the quality evaluation statistic of the currently camped cell based on the last obtained statistic and the currently obtained evaluation parameter includes: and substituting the statistic value obtained last time and the currently obtained evaluation parameter into a preset linear iteration function to obtain the statistic value of the quality evaluation of the currently located cell.
Preferably, when the evaluation parameter is obtained for the first time, the manner of substituting the statistics value obtained last time and the currently obtained evaluation parameter into the preset linear iterative function to obtain the statistics value of the quality evaluation of the currently located camping cell includes: taking a preset optimal evaluation parameter as an initial statistic value; and substituting the initial statistical value and the currently acquired evaluation parameter into a preset linear iteration function to obtain a statistical value of the quality evaluation of the currently-located cell.
Preferably, the adjusting the count value for reflecting whether to reselect the camped cell according to the comparison result between the statistical value and the preset threshold value includes: when the statistic value is larger than a preset threshold value, increasing a count value for reflecting whether to reselect the resident cell; and when the statistic value is less than or equal to a preset threshold, reducing a count value for reflecting whether to reselect the resident cell.
Preferably, the fraction of the count value that is increased is smaller than the fraction of the count value that is decreased.
Preferably, before the step of adjusting the count value corresponding to the first statistical value and used for reflecting whether to reselect the camped cell, the method further comprises: initializing a count value for reflecting whether to reselect the resident cell based on a preset optimal evaluation parameter;
and adjusting the count value corresponding to the first statistic value and used for reflecting whether to reselect the resident cell according to the initialized count value.
Preferably, the determining whether the adjusted count value is smaller than a preset count threshold includes any one of the following manners: when the adjusted count value is smaller than a preset count threshold, directly reselecting the resident cell; and reselecting the resident cell when the adjusted count value is less than a preset count threshold, the counted statistical information of the paging bad frames is less than a preset number threshold, and the comparison result of the signals of the currently resident cell and the adjacent cell meets at least one of preset reselection conditions.
Based on the above object, the present invention further provides a system for reselecting a camped cell, including: the calculating module is used for determining the statistic value of the quality evaluation of the current resident cell based on the obtained evaluation parameter of the paging channel; the adjusting module is used for adjusting a count value for reflecting whether to reselect the resident cell or not according to the comparison result of the statistic value and a preset threshold value; and the reselection determining module is used for judging whether the adjusted count value is smaller than a preset count threshold or not and determining whether the cell is reselected to reside.
Preferably, the calculating module is configured to determine, in an iterative manner, a statistical value of quality evaluation of the currently camped cell based on the statistical value obtained last time and the currently obtained evaluation parameter.
Preferably, the calculating module is configured to substitute the last obtained statistical value and the currently obtained evaluation parameter into a preset linear iteration function to obtain a statistical value of the quality evaluation of the currently camped cell.
Preferably, the calculation module is configured to take a preset optimal evaluation parameter as an initial statistical value when the evaluation parameter is obtained for the first time; and substituting the initial statistical value and the currently acquired evaluation parameter into a preset linear iteration function to obtain a statistical value of the quality evaluation of the currently-located cell.
Preferably, the adjusting module is configured to increase a count value used for reflecting whether to reselect the camped cell when the statistical value is greater than a preset threshold value; and when the statistic value is less than or equal to a preset threshold, reducing a count value for reflecting whether to reselect the resident cell.
Preferably, the fraction of the count value that is increased is smaller than the fraction of the count value that is decreased.
Preferably, the adjusting module is configured to initialize a count value reflecting whether to reselect the camped cell based on a preset optimal evaluation parameter; and adjusting the count value corresponding to the first statistic value and used for reflecting whether to reselect the resident cell according to the initialized count value.
Preferably, the reselection determination module is configured to: when the adjusted count value is smaller than a preset count threshold, directly reselecting the resident cell; and reselecting the resident cell when the adjusted count value is less than a preset count threshold, the counted statistical information of the paging bad frames is less than a preset number threshold, and the comparison result of the signals of the currently resident cell and the adjacent cell meets at least one of preset reselection conditions.
In view of the above object, the present invention further provides a mobile device including the system for reselecting a camped cell as described in any one of the above.
As described above, the method, system and mobile device for reselecting a camped cell according to the present invention have the following advantages: the channel quality is evaluated by counting the evaluation parameters of the paging channel quality, and the reselection operation is started according to the evaluated counting value, so that the reselection operation can be flexibly triggered in advance when the receiving quality of a serving cell is poor and the receiving level is high, the mobile equipment can reside in a better cell, and a paging bad frame is prevented from being received for a long time; in addition, a linear smoothing mode is adopted, so that the influence of signal mutation is effectively prevented; in addition, the optimal evaluation parameters are used as initial statistical values, the floating interval of the counter can be correspondingly determined, and the occurrence of error evaluation is effectively prevented; in addition, by combining the statistics of paging bad frames and the comparison of signals of the currently camped cell and the neighboring cell, reselection can be performed more accurately, so as to prevent the mobile device from being reselected frequently between the two cells.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a method flow diagram of one embodiment of a method of reselecting a camped cell of the present invention.
Fig. 2 is a block diagram of an embodiment of a system for reselecting a camped cell according to the present invention.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a method for reselecting a camped cell. The reselection method is primarily performed by a reselection system installed on a mobile device. The reselection system is used for actively initiating reselection of the adjacent cell and the current cell when the downlink channel quality of the currently camped cell is poor. Specifically, the reselection system performs the following steps:
in step S1, the reselection system determines a statistic value of the quality evaluation of the currently camped cell based on the obtained evaluation parameter of the paging channel.
Specifically, the reselection system detects the paging channel at regular time after the resident cell is located, and acquires the evaluation parameter provided by the resident cell through the paging channel. And the reselection system determines a statistic value corresponding to the acquired evaluation parameter according to a pre-simulated channel evaluation model. The statistical value is used for counting the quality evaluation condition of the downlink channel provided by the cell. Wherein the quality assessment condition includes, but is not limited to: carrier-to-interference ratio, signal-to-noise ratio, etc.
Preferably, the reselection system may further determine, in an iterative manner, a quality evaluation statistic of the currently camped cell based on the statistics obtained last time and the currently obtained evaluation parameter.
The reselection system is preset with an iterative algorithm which is subjected to simulation verification, and the statistical value obtained by the iterative algorithm last time and the equation which is constructed by taking the currently obtained evaluation parameter as parameters. The equation may be a first order or even a multiple order equation. And the reselection system substitutes the statistic value obtained last time and the currently obtained evaluation parameter into the equation to obtain the statistic value of the quality evaluation of the currently located resident cell.
Preferably, the reselection system substitutes the statistics value obtained last time and the currently obtained evaluation parameter into a preset linear iteration function to obtain the statistics value of the quality evaluation of the currently located camping cell.
Here, the linear iterative function is exemplified by QN＝α×XN+(1-α)×QN-1Where α is a smoothing factor, QN-1For the last statistical value, XNEvaluation parameter for Nth reception, wherein α is at [0,1 ]]And is a preset constant.
Initial values of the evaluation parameters can be preset in the reselection system so as to process the evaluation parameters acquired for the first time. The initial value may be set by other parameters acquired by the paging channel. Preferably, the reselection system is used for presetting an optimal evaluation parameter Q0As an initial statistical value QN-1(ii) a And substituting the initial statistical value and the evaluation parameter obtained for the first time into a preset linear iteration function to obtain the statistical value of the quality evaluation of the current resident cell.
For example, the reselection system substitutes the initial statistical value and the first obtained evaluation parameter into a preset linear iteration function QN＝α×XN+(1-α)×QN-1Obtaining the statistic Q of the quality evaluation of the current resident cellN。
Here, the larger the statistical value is, the better the quality of the downlink channel provided by the currently camped cell is reflected. Conversely, the smaller the statistical value, the worse the quality of the downlink channel provided by the currently camped cell is reflected.
In step S2, the reselection system adjusts a count value used to reflect whether to reselect the camped cell according to the comparison result between the statistical value and a preset threshold value.
Here, the count value is an evaluation value for evaluating whether the determined statistical value is low enough to require cell reselection.
Therefore, when the reselection system determines that the statistic value is greater than the preset threshold value, which indicates that the quality of the current downlink channel is better, the evaluation of continuously selecting the resident cell is increased by increasing the count value; and when the reselection system determines that the statistic value is less than or equal to a preset threshold value, which indicates that the quality of the current downlink channel is poor, the evaluation of continuously selecting the resident cell is reduced by reducing the count value.
For example, when the reselection system obtains the determined statistic value greater than the preset threshold value, the QC is enabledN＝QCN-1+ n. Wherein n is a portion for increasing the count value, QCNFor the count value corresponding to the determined statistical value, QCN-1Is the count value corresponding to the last determined statistical value.
When the determined statistic value obtained by the reselection system is less than or equal to a preset threshold value, the QC is orderedN＝QCN-1-m. Where m is a portion where the count value is lowered, QCNFor the count value corresponding to the determined statistical value, QCN-1Is the count value corresponding to the last determined statistical value.
Here, n and m are integer values obtained in advance by channel simulation. Preferably, the fraction n of the increased count value is smaller than the fraction m of the decreased count value, i.e.: m is more than n.
For the reselection system, the counting value corresponding to the first statistical value may be determined according to other information (such as signal-to-noise ratio) provided by the paging channel.
Preferably, the reselection system is initialized based on a preset optimal evaluation parameter, and is configured to reflect a count value of whether to reselect the camped cell, and adjust the initialized count value according to the first obtained statistical value in the above adjustment manner.
For example, the reselection system may be configured to perform the optimal evaluation parameter corresponding to the paging channel under an ideal condition; or, according to the quality of the paging channel when the information transmitted by the paging channel is received for the first time, the obtained evaluation parameter is used as the optimal evaluation parameter. Then, the reselection system adjusts the initialized count value according to the first obtained statistic value in the adjustment mode.
If the reselection system obtains the initialized count value according to the optimal evaluation parameter corresponding to the paging channel under the ideal condition, the reselection system may use the initialized count value as the current count value when the reselection system adjusts the count value corresponding to the current statistical value according to the adjustment manner to be greater than or equal to the initialized count value.
When the reselection system determines the adjusted count value, step S3 is performed.
In step S3, the reselection system determines whether the adjusted count value is smaller than a preset count threshold, and determines whether to reselect the camping cell.
Specifically, the reselection system determines whether the adjusted count value is smaller than a preset count threshold; if not, go to step S1; and if so, reselecting the resident cell.
Here, the reselection system may directly initiate the relevant module for reselecting the camped cell. For example, when the reselection system determines that the adjusted count value is smaller than a preset count threshold, the reselection system starts a handover module to initiate a network camping request to an adjacent cell. Thereby ensuring that the cell accessed by the mobile device can provide better channel service.
In another scheme, the reselection system reselects the camped cell when at least one of the adjusted count value is smaller than a preset count threshold, the counted statistical information of the paging bad frames is smaller than a preset number threshold, and the comparison result of the signals of the currently camped cell and the neighboring cell meets a preset reselection condition is satisfied.
Here, while performing steps S1 and S2, the reselection system also counts whether the number of bad frames of the current paging is greater than a preset number threshold and/or whether the comparison result of the signals of the currently camped cell and the neighboring cell meets a preset reselection condition.
And when the adjusted count value is less than a preset count threshold, the counted statistical information of the paging bad frames is less than a preset number threshold, and the comparison result of the signals of the current resident cell and the adjacent cell meets at least one of preset reselection conditions, reselecting the resident cell by the reselection system.
Here, the reselection isThe statistical information of the paging bad frames monitored by the system may be the current DSC count value. Wherein the number threshold is, for example, an initial DSC count value
a is an integer. In this way, when the statistical information of the counted paging bad frames is smaller than the preset number threshold, the reselection system reselects the camping cell.
For example, when the adjusted count value is smaller than a preset count threshold, the reselection system further counts the number of bad frames acquired from the paging channel, and when the counted number of bad frames reaches a preset number threshold, it is determined that a network camping request is initiated to the neighboring cell.
For another example, after determining that the adjusted count value is smaller than the preset count threshold, the reselection system compares the difference between the power of the signal received from the currently camped cell and the power of the signal received from the neighboring cell; if the power difference is within a preset range, determining to initiate a network residence request to an adjacent cell; otherwise, the cell is determined not to be replaced.
As shown in fig. 2, the present invention provides a method for reselecting a camped cell. The reselection method is primarily performed by a reselection system installed on a mobile device. The reselection system is used for actively initiating reselection of the adjacent cell and the current cell when the downlink channel quality of the currently camped cell is poor. Specifically, the reselection system 1 includes: a calculation module 11, an adjustment module 12, and a reselection determination module 13.
The calculating module 11 is configured to determine a statistic value of the quality evaluation of the currently camped cell based on the obtained evaluation parameter of the paging channel.
Specifically, the calculation module 11 detects the paging channel at regular time after the camped cell, and obtains the evaluation parameter provided by the camped cell through the paging channel. The calculation module 11 determines a statistical value corresponding to the obtained evaluation parameter according to a pre-simulated channel evaluation model. The statistical value is used for counting the quality evaluation condition of the downlink channel provided by the cell. Wherein the quality assessment condition includes, but is not limited to: carrier-to-interference ratio, signal-to-noise ratio, etc.
Preferably, the calculating module 11 may further determine the statistic value of the quality evaluation of the currently camped cell in an iterative manner based on the statistic value obtained last time and the currently obtained evaluation parameter.
Here, the calculation module 11 is preset with an iterative algorithm subjected to simulation verification, and the statistical value obtained by the iterative algorithm last time and the equation constructed by using the currently obtained evaluation parameter as parameters. The equation may be a first order or even a multiple order equation. The calculating module 11 substitutes the statistical value obtained last time and the currently obtained evaluation parameter into the equation to obtain the statistical value of the quality evaluation of the currently located cell.
Preferably, the calculating module 11 substitutes the statistics value obtained last time and the currently obtained evaluation parameter into a preset linear iteration function to obtain the statistics value of the quality evaluation of the currently located cell.
Here, the linear iterative function is exemplified by QN＝α×XN+(1-α)×QN-1Where α is a smoothing factor, QN-1For the last statistical value, XNEvaluation parameter for Nth reception, wherein α is at [0,1 ]]And is a preset constant.
The calculation module 11 may be preset with an initial value of the evaluation parameter so as to process the evaluation parameter obtained for the first time. The initial value may be set by other parameters acquired by the paging channel. Preferably, the calculation module 11 is used for calculating a preset optimal evaluation parameter Q0As an initial statistical value QN-1(ii) a And substituting the initial statistical value and the evaluation parameter obtained for the first time into a preset linear iteration function to obtain the statistical value of the quality evaluation of the current resident cell.
For example, the calculation module 11 substitutes the initial statistical value and the first obtained evaluation parameter into a preset linear iteration function QN＝α×XN+(1-α)×QN-1Obtaining the statistic Q of the quality evaluation of the current resident cellN。
Here, the larger the statistical value is, the better the quality of the downlink channel provided by the currently camped cell is reflected. Conversely, the smaller the statistical value, the worse the quality of the downlink channel provided by the currently camped cell is reflected.
The adjusting module 12 is configured to adjust a count value used for reflecting whether to reselect the camped cell according to a comparison result between the statistical value and a preset threshold value.
Here, the count value is an evaluation value for evaluating whether the determined statistical value is low enough to require cell reselection.
Therefore, when the adjustment module 12 determines that the statistical value is greater than the preset threshold value, which indicates that the quality of the current downlink channel is better, the evaluation of continuously selecting the camped cell is increased by increasing the count value; when the adjustment module 12 determines that the statistic value is less than or equal to the preset threshold value, which indicates that the quality of the current downlink channel is poor, the evaluation for continuously selecting the camped cell is reduced by reducing the count value.
For example, when the determined statistic obtained by the adjusting module 12 is greater than a preset threshold, the QC is enabledN＝QCN-1+ n. Wherein n is a portion for increasing the count value, QCNFor the count value corresponding to the determined statistical value, QCN-1Is the count value corresponding to the last determined statistical value.
When the determined statistic value obtained by the adjusting module 12 is less than or equal to a preset threshold value, the QC is enabledN＝QCN-1-m. Where m is a portion where the count value is lowered, QCNFor the count value corresponding to the determined statistical value, QCN-1Is the count value corresponding to the last determined statistical value.
Here, n and m are integer values obtained in advance by channel simulation. Preferably, the fraction n of the increased count value is smaller than the fraction m of the decreased count value, i.e.: m is more than n.
For the adjusting module 12, the counting value corresponding to the first statistical value may be determined according to other information (such as signal-to-noise ratio) provided by the paging channel.
Preferably, the adjusting module 12 is configured to initialize a count value for reflecting whether to reselect the camped cell based on a preset optimal evaluation parameter, and adjust the initialized count value according to the first obtained statistical value in the above adjusting manner.
For example, the adjusting module 12 determines the optimal evaluation parameter corresponding to the paging channel under an ideal condition; or, according to the quality of the paging channel when the information transmitted by the paging channel is received for the first time, the obtained evaluation parameter is used as the optimal evaluation parameter. Next, the adjusting module 12 adjusts the initialized count value according to the first obtained statistic value according to the above adjusting manner.
If the adjusting module 12 obtains the initialized count value according to the optimal evaluation parameter corresponding to the paging channel under the ideal condition, when the adjusting module 12 adjusts the count value corresponding to the current statistical value according to the adjusting manner, and the count value is greater than or equal to the initialized count value, the adjusting module 12 may use the initialized count value as the current count value.
When the adjustment module 12 determines the adjusted count value, the reselection determination module 13 is started.
The reselection determination module 13 is configured to determine whether the adjusted count value is smaller than a preset count threshold, and determine whether to reselect a camping cell.
Specifically, the reselection determination module 13 determines whether the adjusted count value is smaller than a preset count threshold; if not, the calculation module 11 is executed again; and if so, reselecting the resident cell.
Here, the reselection determination module 13 may directly initiate a relevant module for reselecting the camped cell. For example, when the reselection determining module 13 determines that the adjusted count value is smaller than a preset count threshold, it starts a handover module to initiate a network camping request to an adjacent cell. Thereby ensuring that the cell accessed by the mobile device can provide better channel service.
In another scheme, the reselection determination module 13 reselects the camped cell when at least one of the adjusted count value is smaller than a preset count threshold, the counted statistical information of the paging bad frames is smaller than a preset number threshold, and a comparison result of signals of the currently camped cell and the neighboring cell meets a preset reselection condition is satisfied.
Here, while the calculating module 11 and the adjusting module 12 operate, the reselection determining module 13 further counts whether the number of the current paging bad frames is greater than a preset number threshold, and/or whether a comparison result of signals of the currently camped cell and the neighboring cell meets a preset reselection condition.
When the adjusted count value is smaller than a preset count threshold, the counted statistical information of the paging bad frames is smaller than a preset number threshold, and the comparison result of the signals of the currently camped cell and the neighboring cell meets at least one of preset reselection conditions, the reselection determination module 13 reselects the camped cell.
Here, the statistical information of the paging bad frames monitored by the reselection determination module 13 may be a current DSC count value. Wherein the number threshold is, for example, an initial DSC count value
a is an integer. In this way, when the statistical information of the counted paging bad frames is smaller than the preset number threshold, the reselection determination module 13 reselects the camping cell.
For example, when the adjusted count value is smaller than a preset count threshold, the reselection determination module 13 further counts the number of bad frames obtained from the paging channel, and when the counted number of bad frames reaches a preset number threshold, determines to initiate a network camping request to the neighboring cell.
For another example, after determining that the adjusted count value is smaller than the preset count threshold, the reselection determination module 13 compares the difference between the power of the signal received from the currently camped cell and the power of the signal received from the neighboring cell; if the power difference is within a preset range, determining to initiate a network residence request to an adjacent cell; otherwise, the cell is determined not to be replaced.
In summary, the method, the system and the mobile device for reselecting the camping cell of the present invention evaluate the channel quality by counting the evaluation parameters of the paging channel quality, and start the reselection operation according to the evaluated count value, so that the reselection operation can be flexibly triggered in advance when the serving cell has a poor reception quality and a strong reception level, so that the mobile device can camp in a better cell, and avoid receiving a paging bad frame for a long time; in addition, a linear smoothing mode is adopted, so that the influence of signal mutation is effectively prevented; in addition, the optimal evaluation parameters are used as initial statistical values, the floating interval of the counter can be correspondingly determined, and the occurrence of error evaluation is effectively prevented; in addition, by combining the statistics of paging bad frames and the comparison of signals of the currently camped cell and the neighboring cell, reselection can be performed more accurately, so as to prevent the mobile device from being reselected frequently between the two cells. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (13)
1. A method for reselecting a camped cell, comprising:
determining a statistic value of the quality evaluation of the current resident cell based on the obtained evaluation parameter of the paging channel, wherein the statistic value is positively correlated with the quality of a downlink channel provided by the current resident cell;
adjusting a count value for reflecting whether to reselect the resident cell or not according to the comparison result of the statistic value and a preset threshold value;
judging whether the adjusted count value is smaller than a preset count threshold or not, and determining whether the cell is reselected to camp;
wherein, according to the comparison result between the statistic value and the preset threshold value, adjusting the count value for reflecting whether to reselect the camped cell comprises:
when the statistic value is larger than a preset threshold value, increasing a count value for reflecting whether to reselect the resident cell;
when the statistic value is less than or equal to a preset threshold, reducing a count value for reflecting whether to reselect the resident cell;
the judging whether the adjusted count value is smaller than a preset count threshold or not and the determining whether the cell is reselected to reside in the cell comprises any one of the following modes:
when the adjusted count value is smaller than a preset count threshold, directly reselecting the resident cell;
and reselecting the resident cell when the adjusted count value is less than a preset count threshold, the counted statistical information of the paging bad frames is less than a preset number threshold, and the comparison result of the signals of the currently resident cell and the adjacent cell meets at least one of preset reselection conditions.
2. The method of reselecting a camped cell according to claim 1, wherein the determining the statistics of the quality evaluation of the currently camped cell based on the obtained evaluation parameters of the paging channel comprises:
and determining the quality evaluation statistic value of the current resident cell by adopting an iteration mode based on the last acquired statistic value and the currently acquired evaluation parameter.
3. The method of reselecting an camped cell according to claim 2, wherein said determining the statistics of the quality evaluation of the currently camped cell based on the statistics obtained last time and the currently obtained evaluation parameters in an iterative manner comprises:
and substituting the statistic value obtained last time and the currently obtained evaluation parameter into a preset linear iteration function to obtain the statistic value of the quality evaluation of the currently located cell.
4. The method of claim 3, wherein when acquiring the evaluation parameter for the first time, the step of substituting the statistics acquired last time and the currently acquired evaluation parameter into a preset linear iterative function to obtain the statistics of the quality evaluation of the currently camped cell comprises:
taking a preset optimal evaluation parameter as an initial statistic value;
and substituting the initial statistical value and the currently acquired evaluation parameter into a preset linear iteration function to obtain a statistical value of the quality evaluation of the currently-located cell.
5. The method of reselecting a camped cell according to claim 1, wherein the portion of the incremented count value is less than the portion of the decremented count value.
6. The method of reselecting a camped cell according to claim 1, further comprising, before the step of adjusting the count value corresponding to the first statistical value for reflecting whether to reselect the camped cell, the step of:
initializing a count value for reflecting whether to reselect the resident cell based on a preset optimal evaluation parameter;
and adjusting the count value corresponding to the first statistic value and used for reflecting whether to reselect the resident cell according to the initialized count value.
7. A system for reselecting a camped cell, comprising:
the calculating module is used for determining a statistic value of the quality evaluation of the current resident cell based on the obtained evaluation parameter of the paging channel, wherein the statistic value is positively correlated with the quality of a downlink channel provided by the current resident cell;
the adjusting module is used for adjusting a count value for reflecting whether to reselect the resident cell or not according to the comparison result of the statistic value and a preset threshold value;
a reselection determination module, configured to determine whether the adjusted count value is smaller than a preset count threshold, and determine whether to reselect a camping cell;
the adjusting module is used for increasing a count value used for reflecting whether to reselect the resident cell or not when the statistic value is larger than a preset threshold value; when the statistic value is less than or equal to a preset threshold, reducing a count value for reflecting whether to reselect the resident cell;
the reselection determination module adopts any one of the following modes:
when the adjusted count value is smaller than a preset count threshold, directly reselecting the resident cell;
and reselecting the resident cell when the adjusted count value is less than a preset count threshold, the counted statistical information of the paging bad frames is less than a preset number threshold, and the comparison result of the signals of the currently resident cell and the adjacent cell meets at least one of preset reselection conditions.
8. The system of claim 7, wherein the computing module is configured to determine the statistics of the quality evaluation of the currently camped cell in an iterative manner based on the statistics obtained last time and the currently obtained evaluation parameters.
9. The system according to claim 8, wherein the calculating module is configured to substitute the last obtained statistics and the currently obtained evaluation parameters into a preset linear iterative function to obtain the statistics of the quality evaluation of the currently camped cell.
10. The system for reselecting a camped cell according to claim 9, wherein the computing module is configured to take a preset optimal evaluation parameter as an initial statistic when obtaining the evaluation parameter for the first time; and substituting the initial statistical value and the currently acquired evaluation parameter into a preset linear iteration function to obtain a statistical value of the quality evaluation of the currently-located cell.
11. The system for reselecting a camped cell according to claim 7, wherein the portion of the incremented count value is less than the portion of the decremented count value.
12. The system for reselecting a camped cell according to claim 7, wherein the adjusting module is configured to initialize a count value reflecting whether to reselect the camped cell based on a preset optimal evaluation parameter; and adjusting the count value corresponding to the first statistic value and used for reflecting whether to reselect the resident cell according to the initialized count value.
13. A mobile device comprising a system for reselecting a camped cell according to any one of claims 7-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510934169.9A CN106888484B (en) | 2015-12-15 | 2015-12-15 | Method and system for reselecting resident cell and applicable mobile equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510934169.9A CN106888484B (en) | 2015-12-15 | 2015-12-15 | Method and system for reselecting resident cell and applicable mobile equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106888484A CN106888484A (en) | 2017-06-23 |
| CN106888484B true CN106888484B (en) | 2020-08-07 |
Family
ID=59174819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510934169.9A Active CN106888484B (en) | 2015-12-15 | 2015-12-15 | Method and system for reselecting resident cell and applicable mobile equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106888484B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340794A (en) * | 2010-07-28 | 2012-02-01 | 中国电信股份有限公司 | Cell reselection method and system |
| CN103889010A (en) * | 2014-03-25 | 2014-06-25 | 京信通信技术(广州)有限公司 | Cell reselection parameter adjustment method and device |
| CN104113863A (en) * | 2014-07-16 | 2014-10-22 | 京信通信系统（中国）有限公司 | Switch optimizing method and apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8611277B2 (en) * | 2009-06-22 | 2013-12-17 | Motorola Mobility Llc | Reselection in a wireless communication system |
-
2015
- 2015-12-15 CN CN201510934169.9A patent/CN106888484B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340794A (en) * | 2010-07-28 | 2012-02-01 | 中国电信股份有限公司 | Cell reselection method and system |
| CN103889010A (en) * | 2014-03-25 | 2014-06-25 | 京信通信技术(广州)有限公司 | Cell reselection parameter adjustment method and device |
| CN104113863A (en) * | 2014-07-16 | 2014-10-22 | 京信通信系统（中国）有限公司 | Switch optimizing method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106888484A (en) | 2017-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11197167B2 (en) | Facilitation of self-adjusting network uplink noise balancing | |
| US8615242B2 (en) | Method and user equipment for cell selection of heterogeneous network | |
| CN107211335B (en) | Cell reselection method and user terminal | |
| EP4333493A2 (en) | Communications device and method | |
| KR20130093060A (en) | Method and apparatus for cell reselection | |
| US11711154B2 (en) | Method of reporting RSSI measurements in an unlicensed band and related apparatus | |
| CN109561477B (en) | Cell information sending method, cell information residing method, network equipment and terminal | |
| US20130029702A1 (en) | Method of reporting measurement report events | |
| CN111263403A (en) | Method and device for balancing loads among multi-frequency cells in LTE network | |
| CN111246531A (en) | Switching method and base station | |
| CN111713139B (en) | Measuring method and device | |
| WO2011123974A1 (en) | Cell selection and switching judgment method and device | |
| US20130242767A1 (en) | Cell Selection and Reselection in a Telecommunication Network | |
| CN106888484B (en) | Method and system for reselecting resident cell and applicable mobile equipment | |
| US9414277B2 (en) | Base station and method for controlling base station | |
| CN111263375B (en) | VOLTE uplink and downlink coverage balance judgment method and device | |
| EP3119131B1 (en) | Cell access methods | |
| US9843944B2 (en) | Method and apparatus for coordinating cell outage compensation and capacity and coverage optimization | |
| EP2704487B1 (en) | Improved handover control | |
| CN116390180B (en) | Cell access method, device, electronic equipment and readable storage medium | |
| CN109309941B (en) | User device and base station reselection evaluation method thereof | |
| CN115812325A (en) | Method for avoiding repeated cell reselection, user equipment and storage medium | |
| CN115623572A (en) | Uplink interference processing method and device | |
| CN110582101A (en) | LTE cell terminal position determining method, base station and terminal equipment | |
| BR102016011683A2 (en) | METHOD FOR PROCESSING RADIO SIGNS AND MOBILE TERMINAL DEVICE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |