CN109842900B - Method and device for inhibiting ping-pong handover - Google Patents
Method and device for inhibiting ping-pong handover Download PDFInfo
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- CN109842900B CN109842900B CN201711218297.9A CN201711218297A CN109842900B CN 109842900 B CN109842900 B CN 109842900B CN 201711218297 A CN201711218297 A CN 201711218297A CN 109842900 B CN109842900 B CN 109842900B
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Abstract
The embodiment of the invention provides a method and a device for inhibiting ping-pong handover, wherein the method comprises the following steps: a service cell receives a switching event measurement message reported by a user terminal and acquires a suppression parameter corresponding to the user terminal; judging whether the suppression parameters meet the suppression ping-pong switching condition; if the suppression parameter meets the ping-pong handover suppression condition, determining a first cell individual offset according to the measurement message and determining a second cell individual offset according to the suppression parameter, wherein the first cell individual offset is the maximum value of the measurement message of the handover event which is not reported; selecting a minimum value from the first cell individual offset and the second cell individual offset, taking the minimum value as the cell individual offset, and sending the cell individual offset to the user terminal; if the suppression parameters do not meet the suppression ping-pong switching conditions, generating a corresponding switching instruction according to the measurement message, and sending the switching instruction to the user terminal; and further, the communication quality of the user terminal can be improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for inhibiting ping-pong handover.
Background
With the popularization of mobile internet technology and mobile terminals, users can use mobile terminals to perform various services, such as internet access, video on demand, mail receiving and sending, downloading and the like; with the gradual increase of 4G (the 4th Generation communication system) network users, the demand of users for the bandwidth capacity of the network also increases, so that the TD-LTE (Time Division-Synchronous Code Division Multiple Access Long Term Evolution) network system adopts a layered networking mode, for example, a D-band co-frequency networking, an F + D band networking, and the like, to meet the increasing user volume and various service demands.
If the signal strength of two cells in a certain area changes violently, the user terminal will switch back and forth between the two cells, that is, the user terminal has ping-pong switching, which reduces the communication quality of the user terminal.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a method for suppressing ping-pong handover, so as to improve the communication quality of a user terminal.
Correspondingly, the embodiment of the invention also provides a device for inhibiting ping-pong switching, which is used for ensuring the realization and the application of the method.
In order to solve the above problem, the present invention discloses a method for inhibiting ping-pong handover, comprising:
a service cell receives a switching event measurement message reported by a user terminal and acquires a suppression parameter corresponding to the user terminal;
judging whether the suppression parameters meet a suppression ping-pong switching condition;
if the suppression parameter meets the ping-pong handover suppression condition, determining a first cell individual offset according to the measurement message and determining a second cell individual offset according to the suppression parameter, wherein the first cell individual offset is the maximum value of the measurement message of the handover event which is not reported; selecting a minimum value from the first cell individual offset and the second cell individual offset, taking the minimum value as a cell individual offset, and sending the cell individual offset to the user terminal;
and if the suppression parameters do not meet the ping-pong switching suppression condition, generating a corresponding switching instruction according to the measurement message, and sending the switching instruction to the user terminal.
Optionally, the calculating the first cell individual offset according to the measurement message includes:
acquiring quality parameters of a corresponding target switching cell from the measurement message, and acquiring configuration parameters corresponding to the switching event;
and calculating the individual offset of the first cell according to the quality parameter and the configuration parameter of the target switching cell.
Optionally, the determining the second cell individual offset according to the suppression parameter includes:
obtaining ping-pong switching times of the user terminal from the suppression parameters, and obtaining a third cell individual offset and an adjustment step length corresponding to the switching event;
and calculating the individual offset of the second cell according to the individual offset of the third cell, the ping-pong switching times and the adjustment step length.
Optionally, the suppression parameters include: the spectrum efficiency of the transmission channel of the serving cell and the user terminal, the access duration of the user terminal and the ping-pong handover times of the user terminal,
the judging whether the suppression parameter meets a suppression ping-pong switching condition includes:
judging whether the frequency spectrum efficiency is lower than an efficiency threshold;
if the frequency spectrum efficiency is lower than an efficiency threshold, judging whether the access duration is shorter than a detection duration; if the access duration is less than the detection duration, judging whether the ping-pong switching times are greater than a quantity threshold; if the ping-pong switching times are greater than a quantity threshold, determining that the suppression parameter meets a suppression ping-pong switching condition;
otherwise, determining that the suppression parameter does not satisfy the ping-pong handover suppression condition.
Optionally, the method further comprises:
timing is started when the cell individual offset is sent to the user terminal, and the execution duration of the user terminal for executing ping-pong suppression is recorded;
and judging that the execution time reaches the ping-pong suppression time, and sending the personalized offset of the third cell to the user terminal as the personalized offset of the cell.
Optionally, the method further comprises:
judging that the execution duration does not reach the ping-pong suppression duration, the serving cell receiving an A2 event measurement message reported by the user terminal, executing the step of taking the third cell individual offset as the cell individual offset and sending the cell individual offset to the user terminal;
wherein, the measurement threshold corresponding to the a2 event is an inter-system handover threshold.
The embodiment of the invention also provides a device for inhibiting ping-pong switching, which comprises:
an obtaining module, configured to receive, by a serving cell, a handover event measurement message reported by a user terminal, and obtain a suppression parameter corresponding to the user terminal;
the switching judgment module is used for judging whether the inhibition parameters meet the ping-pong switching inhibition condition;
an offset generation module, configured to determine, if the suppression parameter meets a ping-pong handover suppression condition, an individual offset of a first cell according to the measurement message and an individual offset of a second cell according to the suppression parameter, where the individual offset of the first cell is a maximum value of a measurement message for a handover event that is not reported; selecting a minimum value from the first cell individual offset and the second cell individual offset, taking the minimum value as a cell individual offset, and sending the cell individual offset to the user terminal;
and the switching instruction generating module is used for generating a corresponding switching instruction according to the measurement message and sending the switching instruction to the user terminal if the suppression parameter does not meet the suppression ping-pong switching condition.
Optionally, the offset generating module includes:
the first generation submodule is used for acquiring the quality parameters of the corresponding target switching cell from the measurement message and acquiring the configuration parameters corresponding to the switching event; and calculating the individual offset of the first cell according to the quality parameter and the configuration parameter of the target switching cell.
Optionally, the offset generating module includes: :
a second generation submodule, configured to obtain ping-pong handover times of the user equipment from the suppression parameter, and obtain an individual offset and an adjustment step length of a third cell corresponding to the handover event; and calculating the individual offset of the second cell according to the individual offset of the third cell, the ping-pong switching times and the adjustment step length.
Optionally, the suppression parameters include: the spectrum efficiency of the transmission channel of the serving cell and the user terminal, the access duration of the user terminal and the ping-pong handover times of the user terminal,
the switching judgment module is specifically configured to judge whether the spectrum efficiency is lower than an efficiency threshold;
if the frequency spectrum efficiency is lower than an efficiency threshold, judging whether the access duration is shorter than a detection duration; if the access duration is less than the detection duration, judging whether the ping-pong switching times are greater than a quantity threshold; if the ping-pong switching times are greater than a quantity threshold, determining that the suppression parameter meets a suppression ping-pong switching condition;
otherwise, determining that the suppression parameter does not satisfy the ping-pong handover suppression condition.
Optionally, the method further comprises:
the time length recording module is used for starting timing when the cell individual offset is sent to the user terminal and recording the execution time length of the user terminal for executing ping-pong suppression;
and the offset resetting module is used for judging that the execution time length reaches the ping-pong suppression time length, taking the third cell individual offset as the cell individual offset and sending the cell individual offset to the user terminal.
Optionally, the offset resetting module is further configured to determine that the execution duration does not reach the ping-pong suppression duration, where the serving cell receives an a2 event measurement message reported by the user terminal, and executes the step of sending the personalized offset of the third cell to the user terminal as the personalized offset of the cell; wherein, the measurement threshold corresponding to the a2 event is an inter-system handover threshold.
Compared with the prior art, the embodiment of the invention has the following advantages:
after receiving a handover event measurement message reported by a user terminal, a serving cell of the embodiment of the present invention can obtain a suppression parameter corresponding to the user terminal, so as to determine whether to suppress handover of the user terminal according to the suppression parameter; namely, whether the suppression parameter meets the ping-pong handover suppression condition is judged, if the suppression parameter does not meet the ping-pong handover suppression condition, namely, the handover of the user terminal does not need to be suppressed, a corresponding handover instruction can be generated and sent according to the measurement message to indicate the user terminal to perform the handover, and a neighboring cell with better access quality is accessed, thereby improving the communication quality of the user terminal. If the suppression parameter meets the ping-pong handover suppression condition, the handover of the user terminal can be suppressed, and then the individual offset of the first cell can be determined according to the measurement message, and the individual offset of the second cell can be determined according to the suppression parameter; the first cell individual offset is the maximum value of the measurement message of the switching event which is not reported, so that the minimum value can be selected from the first cell individual offset and the second cell individual offset, and the minimum value is used as the cell individual offset to be sent to the user terminal, so that the effectiveness of the ping-pong switching of the user terminal which is restrained at this time can be ensured, and the communication quality of the user terminal is improved.
Drawings
FIG. 1 is a flowchart illustrating steps of an embodiment of a method for suppressing ping-pong handovers according to the present invention;
FIG. 2 is a flowchart illustrating steps of another embodiment of a method for suppressing ping-pong handovers in accordance with the present invention;
FIG. 3 is a block diagram of an embodiment of an apparatus for suppressing ping-pong handover according to the present invention;
fig. 4 is a block diagram of another apparatus for suppressing ping-pong handover according to another embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
One of the core ideas of the embodiment of the invention is that a serving cell receives a switching event measurement message reported by a user terminal, if an inhibition parameter corresponding to the user terminal meets an inhibition ping-pong switching condition, the individual offset of the cell can be determined according to the measurement message and the inhibition parameter, and the individual of the cell is sent to the user terminal; therefore, the effectiveness of the ping-pong switching of the user terminal can be guaranteed, and the communication quality of the user terminal is improved. And if the inhibition parameter corresponding to the user terminal does not meet the ping-pong handover inhibition condition, the user terminal can be instructed to perform handover so that the user terminal is accessed to the neighboring cell with higher quality, and the communication quality of the user terminal is improved.
Referring to fig. 1, a flowchart illustrating steps of an embodiment of a method for suppressing ping-pong handover according to the present invention is shown, which may specifically include the following steps:
In the embodiment of the present invention, the serving cell refers to a cell to which the user terminal is currently accessed, and after receiving a handover event measurement message reported by the user terminal, the serving cell determines that the user terminal searches for a better quality neighboring cell, and at this time, the serving cell may send a handover instruction to the user terminal to instruct the user terminal to handover to the better quality neighboring cell. However, when signals of the serving cell and the neighboring cell are unstable (such as sudden strong or weak), ping-pong handover of the user terminal between the serving cell and the neighboring cell may be caused, which affects the communication quality of the user terminal; therefore, before sending a switching instruction to the user terminal, whether the user terminal has undergone ping-pong switching or not can be judged, if the user terminal has undergone ping-pong switching, the switching of the user terminal needs to be suppressed, and if the user terminal has not undergone ping-pong switching, the switching of the user terminal does not need to be suppressed. The suppression parameter of the user terminal can be obtained, so as to judge whether the user terminal has undergone ping-pong handover according to the suppression parameter.
The handover event measurement message is used for requesting cell handover, and the handover event measurement message includes an A3 event measurement message, an a4 event measurement message, and an a5 event measurement message, wherein the reporting condition corresponding to the A3 event measurement message is that the quality of the neighboring cells with the same frequency is higher than that of the serving cell; the A4 event measurement message is reported with the condition that the quality of the same-frequency adjacent cell/different-frequency adjacent cell is higher than a first threshold; the reporting condition corresponding to the a5 event measurement message is that the quality of the co-frequency neighboring cell/the inter-frequency neighboring cell is higher than a second threshold, and the quality of the serving cell is lower than a third threshold, wherein the first threshold, the second threshold and the third threshold can be set as required.
And 102, judging whether the suppression parameters meet the ping-pong switching suppression condition.
In the embodiment of the invention, whether the ping-pong switching occurs in the user terminal can be judged by judging whether the suppression parameters corresponding to the user terminal meet the suppression ping-pong switching condition; if the suppression parameter meets the suppression ping-pong handover condition, determining that the ping-pong handover has occurred in the user equipment, and executing step 103; if the suppression parameter does not satisfy the ping-pong handover suppression condition, it is determined that the ping-pong handover does not occur in the ue, step 105 may be executed.
When determining that the ping-pong handover has occurred to the user terminal, the handover of the user terminal can be suppressed by adopting a corresponding policy for suppressing ping-pong handover, which specifically comprises the following steps:
103, determining a first cell individual offset according to the measurement message and determining a second cell individual offset according to the suppression parameter; and selecting a minimum value from the first cell individual offset and the second cell individual offset, and taking the minimum value as the cell individual offset.
And step 104, sending the individual cell offset to the user terminal.
The user terminal of the embodiment of the invention can judge whether to report the switching event measurement message by judging whether the cell quality (including the quality of the adjacent cell and/or the quality of the service cell) meets the reporting condition corresponding to the switching event, wherein the cell individual offset is one of important parameters for judging whether the cell quality meets the reporting condition corresponding to the switching event; therefore, the embodiment of the present invention can adjust the reporting condition by adjusting the cell individual offset, that is, after it is determined that the ping-pong handover has occurred to the user terminal, on one hand, measurement parameters such as quality parameters of neighboring cells and quality parameters of a serving cell can be obtained from the measurement message, the maximum value of the measurement message of the handover event that is not reported by the user terminal is calculated, and then the maximum value is determined as the first cell individual offset. On the other hand, the individual offset of the second cell can be determined according to the suppression parameter, wherein the suppression parameter can comprise the ping-pong switching times of the user terminal, and further the individual offset of the second cell can be calculated according to the parameters of the ping-pong switching times, the adjustment step length and the like of the user terminal; wherein, the adjustment step size can be set as 1dB according to the requirement.
The individual offset of the first cell may be larger than the individual offset of the second cell and may also be smaller than the individual offset of the second cell, and since the individual offset of the first cell is the maximum value of the measurement message of the handover event which is not reported by the user terminal, the minimum value can be selected from the individual offset of the first cell and the individual offset of the second cell, and the minimum value is used as the individual offset of the cell to ensure the effectiveness of the inhibition and increase the difficulty of reporting the measurement message of the handover event by the user terminal, thereby achieving the purpose of inhibiting the handover. And then, the cell individual offset can be sent to the user terminal, and the user terminal can add the new cell individual offset into the measurement after receiving the new cell individual offset so as to judge whether to report a switching event measurement message or not according to the new cell individual offset in the subsequent process.
And 105, generating a corresponding switching instruction according to the measurement message, and sending the switching instruction to the user terminal.
When the embodiment of the invention determines that the ping-pong switching does not occur to the user terminal, the switching of the user terminal does not need to be inhibited, so that the user terminal is switched to a neighboring cell with better quality, and the communication quality of the user terminal is ensured. Specifically, a corresponding handover instruction may be generated according to the measurement message, where the handover instruction is used to instruct the ue to perform cell handover; and then sending the switching instruction to the user terminal, and after receiving the switching instruction, the user terminal can switch to the corresponding adjacent cell.
After receiving a handover event measurement message reported by a user terminal, a serving cell of the embodiment of the present invention can obtain a suppression parameter corresponding to the user terminal, so as to determine whether to suppress handover of the user terminal according to the suppression parameter; namely, whether the suppression parameter meets the ping-pong handover suppression condition is judged, if the suppression parameter does not meet the ping-pong handover suppression condition, namely, the handover of the user terminal does not need to be suppressed, a corresponding handover instruction can be generated and sent according to the measurement message to indicate the user terminal to perform the handover, and a neighboring cell with better access quality is accessed, thereby improving the communication quality of the user terminal. If the suppression parameter meets the ping-pong handover suppression condition, the handover of the user terminal can be suppressed, and then the individual offset of the first cell can be determined according to the measurement message, and the individual offset of the second cell can be determined according to the suppression parameter; the first cell individual offset is the maximum value of the measurement message of the switching event which is not reported, so that the minimum value can be selected from the first cell individual offset and the second cell individual offset, and the minimum value is used as the cell individual offset to be sent to the user terminal, so that the effectiveness of the ping-pong switching of the user terminal which is restrained at this time can be ensured, and the communication quality of the user terminal is improved.
In another embodiment of the present invention, the suppression parameters may include: the spectrum efficiency of the transmission channel of the serving cell and the user terminal, the access duration of the user terminal and the ping-pong switching frequency of the user terminal can be judged, that is, whether the spectrum efficiency, the access duration and the ping-pong switching frequency meet corresponding thresholds or not is judged, so as to judge whether the suppression parameter meets the condition of suppressing the ping-pong switching or not, and further judge whether the switching of the user terminal is suppressed or not.
Referring to fig. 2, a flowchart of steps of another embodiment of a method for suppressing ping-pong handover in the present invention is shown, which may specifically include the following steps:
In the embodiment of the invention, when the user terminal determines that the quality of the same-frequency adjacent cell is higher than that of the service cell, or determines that the quality of the same-frequency adjacent cell/pilot frequency adjacent cell is higher than a first threshold, or determines that the quality of the same-frequency adjacent cell/pilot frequency adjacent cell is higher than a second threshold and the quality of the service cell is lower than a third threshold, the user terminal can report the corresponding switching event measurement message to request for switching to the adjacent cell; the service cell receives the switching event measurement information reported by the user terminal, acquires the suppression parameter of the user terminal, and then judges whether the suppression parameter meets the ping-pong switching suppression condition so as to determine whether to suppress the switching of the user terminal or allow the user terminal to perform the switching.
In the embodiment of the present invention, the suppression parameters may include spectral efficiencies of transmission channels of the serving cell and the user terminal, an access duration of the user terminal, and ping-pong switching times of the user terminal; the frequency efficiency can be used to represent the comprehensive quality of a serving cell, and can be measured by the serving cell, the access time of the user terminal refers to the sum of the access time of the current access serving cell and the time of the last residence in the serving cell, the access time of the current access serving cell refers to the difference between the current time and the time of the current access serving cell of the user terminal, the ping-pong switching times of the user terminal can be determined according to the history information and the measurement message of the user terminal, and the history information records the cell passed by the user terminal. The method for determining the ping-pong switching times of the user terminal may be that a corresponding target switching cell is determined according to the measurement message, and the target switching cell is a neighboring cell to which the user terminal requests to access; then, determining the ping-pong switching times of the user terminal between the serving cell and the target switching cell according to the historical information of the user terminal; for example, the target handover cell is B, the serving cell is a, if the history information end is recorded as a-B-a, the ping-pong handover frequency can be determined to be 1, if the end is recorded as a-B-a, the ping-pong handover frequency can be determined to be 2, and so on; for another example, the target handover cell is B, the serving cell is a, if the end of the history information is recorded as a-B-D-a, the number of ping-pong handovers may be determined to be 1, if the end is recorded as a-B-D-a, the number of ping-pong handovers may be determined to be 2, and so on.
The step of determining whether the suppression parameter satisfies the ping-pong handover suppression condition may include steps 202 to 204, which are specifically as follows:
When the comprehensive quality of the service cell is poor, in order to ensure the communication quality of the user terminal, the switching of the user terminal is not required to be inhibited, and the user terminal is allowed to be switched to a target switching cell; and when the comprehensive quality of the service cell can ensure the communication quality of the user terminal, whether other parameters meet the corresponding threshold can be judged so as to judge whether the suppression parameters meet the ping-pong handover suppression condition. Therefore, it can be determined whether the spectrum efficiency is lower than the efficiency threshold, if the spectrum efficiency is lower than the efficiency threshold, that is, the comprehensive quality of the serving cell is poor and the communication quality of the ue cannot be guaranteed, at this time, it is determined that the suppression parameter does not satisfy the ping-pong handover suppression condition, and step 212 can be executed; if the spectrum efficiency is higher than the efficiency threshold, it is determined that the serving cell can ensure the communication quality of the user terminal, and step 203 is executed. The efficiency threshold may be set according to a requirement, for example, according to a service type.
Step 203, judging whether the access duration is less than the detection duration.
In the embodiment of the invention, the detection time length corresponding to the serving cell can be obtained, the detection time length can be set to be 2 minutes and the like in advance according to requirements, and when the access time length of the user terminal exceeds the detection time length, the switching of the user terminal is not required to be inhibited; and when the access duration of the user terminal is within the detection duration, whether other parameters meet corresponding thresholds can be judged so as to judge whether the suppression parameters meet the ping-pong handover suppression condition. Therefore, when it is determined that the spectral efficiency is greater than the efficiency threshold, the access duration may be compared with the detection duration to determine whether the access duration is less than the detection duration, and if the access duration is less than the detection duration, step 204 may be performed; if the access duration is greater than the detection duration, at this point it may be determined that the suppression parameter does not satisfy the ping-pong handover suppression condition, then step 212 may be performed.
And 204, judging whether the ping-pong switching frequency is greater than a quantity threshold.
The embodiment of the invention can judge whether the ping-pong switching times of the user terminal is greater than the quantity threshold when the access duration of the user terminal is determined to be less than the detection duration; if the ping-pong handover times are greater than the quantity threshold, that is, the user terminal has undergone ping-pong handover, then it is determined that the suppression parameter satisfies the ping-pong handover suppression condition, step 205 can be performed, if the ping-pong handover times are less than the quantity threshold, that is, the user terminal has not undergone ping-pong handover, then it is determined that the suppression parameter does not satisfy the ping-pong handover suppression condition, then step 212 can be performed; wherein, the number threshold can be set as 1 according to the requirement.
When the suppression parameters are determined to meet the suppression ping-pong switching condition, the individual offset of the first cell and the individual offset of the second cell can be calculated, and then the minimum value is selected from the individual offset of the first cell and the individual offset of the second cell to be used as the individual offset of the cell; the method comprises the following specific steps:
In the embodiment of the present invention, the reporting condition that the event measurement message reporting a3 satisfies is that the following inequality is satisfied:
Mn+Ofn+Ocn-Hys>Mp+Ofp+Ocp+Off
wherein, Mp is the measurement result of the serving cell, and the respective offset of any cell is not calculated; hys is a hysteresis parameter for the event; mn is a measurement result of the adjacent cell, and the respective offset of any cell is not calculated; ofn is the specific bias of the adjacent region frequency; ocn is the cell specific offset of the neighboring cell (i.e. the above-mentioned cell individual offset); ofp is the frequency specific offset on the serving frequency; ocp is the cell specific offset of the serving cell; off is the offset parameter for the event.
The reporting condition that the reporting A4 event measurement message satisfies is that the following inequality is satisfied:
Mn+Ofn+Ocn-Hys>Thresh1
wherein, the Thresh1 is the threshold corresponding to the a4 event, i.e. the first threshold mentioned above.
The reporting condition that the reporting A5 event measurement message satisfies is that the following inequality is satisfied:
Mn+Ofn+Ocn-Hys>Thresh2
and is
Mp+Hys<Thresh3
Wherein, Thresh2 and Thresh3 are thresholds corresponding to the a5 event, and respectively correspond to the second threshold and the third threshold.
Wherein the first cell individual offset is a maximum value at which no handover event measurement message is reported, and therefore, a maximum value at which an a3 event measurement message is not reported:
Max_Ocn＝Mp+Ofp+Ocp+Off-Mn-Ofn+Hys
the maximum value of the a4 event measurement message is not reported:
Max_Ocn＝Thresh1-Mn-Ofn+Hys
the maximum value of the a5 event measurement message is not reported:
Max_Ocn＝Thresh2-Mn-Ofn+Hys
the Mn and the Mp are measured by a user terminal, and other parameters are configured by a serving cell; therefore, determining the first cell individual offset according to the measurement message may specifically include the following sub-steps:
substep 51, obtaining the quality parameter of the corresponding target handover cell from the measurement message, and obtaining the configuration parameter corresponding to the handover event.
Substep 52, calculating the individual offset of the first cell according to the quality parameter and the configuration parameter of the target handover cell.
Therefore, in the embodiment of the present invention, a quality parameter (i.e., Mn) corresponding to a target handover cell may be obtained from a measurement message, the individual offset of the first cell may be calculated according to a corresponding configuration parameter configured for the handover event by the obtained cell, and then according to the quality parameter and the configuration parameter of the target handover cell, specifically, according to a Max _ Ocn calculation formula corresponding to the measurement message of the handover event, the corresponding parameter may be obtained and calculated, and then the Max _ Ocn obtained by the calculation may be used as the individual offset of the first cell. If the handover event measurement message is an a3 event measurement message, the quality parameter (i.e., Mp) of the serving cell may also be obtained.
And step 206, determining the individual offset of the second cell according to the suppression parameter.
In the embodiment of the present invention, the individual offset of the second cell may be calculated according to the ping-pong handover times in the suppression parameter and a preset adjustment step size, and specifically, the following substeps may be included:
and a substep 61 of obtaining ping-pong switching times of the user terminal from the suppression parameter, and obtaining a third cell individual offset and an adjustment step length corresponding to the switching event.
And a substep 62 of calculating the individual offset of the second cell according to the individual offset of the third cell, the ping-pong switching times and the adjustment step length.
Specifically, the second cell individual offset may be calculated according to the following formula:
Ocn2＝Ocn3-S*n
the OCn2 is the individual offset of a second cell, the OCn3 is the individual offset of a third cell, the S is the adjustment step length, and the n is the ping-pong switching frequency; the third cell individual offset is a cell specific offset (i.e., Ocn) of a neighboring cell in a reporting condition corresponding to the handover event measurement message.
And step 207, selecting a minimum value from the first cell individual offset and the second cell individual offset, and taking the minimum value as the cell individual offset.
And then selecting a minimum value from the first cell individual offset and the second cell individual offset, wherein the minimum value may not be matched with the value of the cell individual offset configured in the protocol, so that the cell individual offset matched with the minimum value can be selected from the cell individual offsets in the protocol in a downward value-taking mode, and then the matched cell individual offset is used as the cell individual offset sent to the user terminal.
And step 208, sending the cell individual offset to the user terminal, starting timing, and recording the execution duration of the user terminal for executing ping-pong suppression.
And 209, judging whether the execution duration reaches the ping-pong suppression duration.
And then the service cell can send the cell individual offset to the user terminal, and the user terminal can add the new cell individual offset into the measurement after receiving the new cell individual offset so as to judge whether to report a switching event measurement message or not according to the new cell individual offset in the follow-up process.
In another embodiment of the present invention, since the user terminal is mobile, that is, the quality of the serving cell and the quality of the neighboring cell received by the user terminal are changed, the time length for inhibiting the user terminal from being switched is not too long in order to ensure the communication quality of the user terminal; therefore, the embodiment of the invention can set ping-pong suppression duration such as 30 seconds and the like in advance according to the service type requirement, starts timing when the cell individual offset is sent to the user terminal, and records the execution duration of the user terminal for executing ping-pong suppression; and then judging whether the execution duration reaches ping-pong suppression duration to judge whether to terminate the suppression of the user terminal switching. If the execution duration reaches the ping-pong suppression duration, step 211 may be executed; if the execution duration does not reach the ping-pong suppression duration, step 210 can be performed.
And step 211, taking the third cell individual offset as the cell individual offset and sending the cell individual offset to the user terminal.
In the embodiment of the present invention, when the quality of the serving cell detected by the ue is lower than the measurement threshold corresponding to the a2 event, an a2 event measurement message may be reported to the serving cell, where the measurement threshold corresponding to the a2 event is a handover threshold of a different system. Therefore, if the execution duration of the serving cell does not reach the ping-pong suppression duration, the a2 event measurement message reported by the user terminal is received, that is, the serving cell quality is determined to be too poor, in order to ensure the communication quality of the user terminal, on one hand, the personalized offset of the third cell can be used as the personalized offset of the cell and sent to the user terminal without suppressing the switching of the user terminal; the third cell individual offset is greater than the cell individual offset sent to the user terminal in step 208, so that the user terminal can be easily switched to the neighboring cell. On the other hand, a B2 event control command may be sent to instruct the user to determine whether the quality of the inter-system neighboring cell is higher than the fourth threshold and whether the quality of the serving cell is smaller than the fifth threshold; when the quality of the inter-system adjacent cell is higher than the fourth threshold and the quality of the serving cell is lower than the fifth threshold, the ue may report a B2 event measurement message to request handover to the inter-system adjacent cell.
Further, step 211 may also be performed when it is determined that the execution duration reaches the ping-pong suppression duration.
When the suppression parameters are determined not to satisfy the ping-pong handover suppression condition, acquiring a target handover cell from the measurement message, then generating a handover instruction corresponding to the target handover cell, and then sending the handover instruction to the user terminal; and after receiving the switching instruction, the user terminal can switch to a corresponding target switching cell according to the switching quality.
To sum up, after receiving a handover event measurement message reported by a user terminal, a serving cell of the embodiment of the present invention may obtain a suppression parameter corresponding to the user terminal, so as to determine whether to suppress handover of the user terminal according to the suppression parameter; namely, whether the suppression parameter meets the ping-pong handover suppression condition is judged, if the suppression parameter does not meet the ping-pong handover suppression condition, the handover of the user terminal does not need to be suppressed, and a handover instruction can be sent to the user terminal to indicate the user terminal to access the neighboring cell with better quality, so that the communication quality of the user terminal is improved. If the suppression parameter meets the ping-pong handover suppression condition, the handover of the user terminal can be suppressed, and then the individual offset of the first cell can be determined according to the measurement message, and the individual offset of the second cell can be determined according to the suppression parameter; the first cell individual offset is the maximum value of the measurement message of the switching event which is not reported, so that the minimum value can be selected from the first cell individual offset and the second cell individual offset, and the minimum value is used as the cell individual offset to be sent to the user terminal, so that the effectiveness of the ping-pong switching of the user terminal which is restrained at this time can be ensured, and the communication quality of the user terminal is improved.
Further, when judging whether the suppression parameter meets the suppression ping-pong switching condition, judging whether the spectrum efficiency is lower than an efficiency threshold; if the frequency spectrum efficiency is lower than an efficiency threshold, judging whether the access duration is shorter than a detection duration; if the access duration is less than the detection duration, judging whether the ping-pong switching times are greater than a quantity threshold; if the ping-pong switching times are greater than a quantity threshold, determining that the suppression parameter meets a suppression ping-pong switching condition; otherwise, determining that the suppression parameter does not satisfy the ping-pong handover suppression condition. And when the quality of the comprehensive network of the service cell is determined to be poor, no matter whether the ping-pong switching occurs to the user terminal, the ping-pong switching of the user terminal is not required to be inhibited, so that the communication quality of the user terminal is ensured.
Thirdly, when the execution duration is judged to reach the ping-pong suppression duration, the embodiment of the invention takes the third cell individual offset as the cell individual offset and sends the cell individual offset to the user terminal; and then the ping-pong switch of the user terminal is inhibited within the ping-pong inhibition time, and the switch inhibition of the user terminal can be cancelled after the ping-pong inhibition time is reached, so that the subsequent communication quality of the user terminal can be ensured. Then, when the execution duration does not reach the ping-pong suppression duration, the serving cell receives an a2 event measurement message reported by the user terminal, and a measurement threshold corresponding to the a2 event is a different system switching threshold; taking the third cell individual offset as the cell individual offset and sending the cell individual offset to the user terminal; and then when the quality of the service cell is determined to be poor, the ping-pong handover of the user terminal is not inhibited so as to ensure the communication quality of the user terminal.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 3, a block diagram of a structure of an embodiment of the apparatus for suppressing ping-pong handover according to the present invention is shown, and specifically, the apparatus may include the following modules: an acquisition module 301, a handover judgment module 302, an offset generation module 303, and a handover command generation module 304, wherein,
an obtaining module 301, configured to receive, by a serving cell, a handover event measurement message reported by a user terminal, and obtain a suppression parameter corresponding to the user terminal;
a switching judgment module 302, configured to judge whether the suppression parameter meets a ping-pong switching suppression condition;
an offset generating module 303, configured to determine, if the suppression parameter meets a ping-pong handover suppression condition, an individual offset of a first cell according to a measurement message and an individual offset of a second cell according to the suppression parameter, where the individual offset of the first cell is a maximum value of a measurement message for a handover event that is not reported; selecting a minimum value from the first cell individual offset and the second cell individual offset, taking the minimum value as a cell individual offset, and sending the cell individual offset to the user terminal;
a switching instruction generating module 304, configured to generate a corresponding switching instruction according to the measurement message and send the switching instruction to the user terminal if the suppression parameter does not satisfy the ping-pong handover suppression condition.
Referring to fig. 4, a block diagram of another embodiment of an apparatus for suppressing ping-pong handover is shown, and in an optional embodiment of the present invention, the apparatus further includes: a duration recording module 305 and an offset resetting module 306, wherein,
a duration recording module 305, configured to start timing when the cell individual offset is sent to the user terminal, and record an execution duration for the user terminal to execute ping-pong suppression;
and an offset resetting module 306, configured to determine that the execution duration reaches the ping-pong suppression duration, use the third cell individual offset as the cell individual offset, and send the cell individual offset to the user terminal.
The offset resetting module 306 is further configured to determine that the execution duration does not reach the ping-pong suppression duration, where the serving cell receives an a2 event measurement message reported by the user terminal, and executes the step of sending the personalized offset of the third cell to the user terminal as the personalized offset of the cell; wherein, the measurement threshold corresponding to the a2 event is an inter-system handover threshold.
In an optional embodiment of the present invention, the offset generating module 303 includes: a first generation submodule 3031 and a second generation submodule 3032, wherein,
a first generating submodule 3031, configured to obtain a quality parameter of a corresponding target handover cell from the measurement message, and obtain a configuration parameter corresponding to the handover event; and calculating the individual offset of the first cell according to the quality parameter and the configuration parameter of the target switching cell.
A second generating submodule 3032, configured to obtain the ping-pong handover times of the user equipment from the suppression parameter, and obtain an individual offset and an adjustment step length of a third cell corresponding to the handover event; and calculating the individual offset of the second cell according to the individual offset of the third cell, the ping-pong switching times and the adjustment step length.
In an optional embodiment of the invention, the suppression parameters comprise: the spectrum efficiency of the transmission channel of the serving cell and the user terminal, the access duration of the user terminal and the ping-pong handover times of the user terminal,
the handover determining module 302 is specifically configured to determine whether the spectrum efficiency is lower than an efficiency threshold;
if the frequency spectrum efficiency is lower than an efficiency threshold, judging whether the access duration is shorter than a detection duration; if the access duration is less than the detection duration, judging whether the ping-pong switching frequency is greater than a quantity threshold; if the ping-pong switching times are greater than a quantity threshold, determining that the suppression parameter meets a suppression ping-pong switching condition;
otherwise, determining that the suppression parameter does not satisfy the ping-pong handover suppression condition.
After receiving a handover event measurement message reported by a user terminal, a serving cell of the embodiment of the present invention can obtain a suppression parameter corresponding to the user terminal, so as to determine whether to suppress handover of the user terminal according to the suppression parameter; namely, whether the suppression parameter meets the ping-pong handover suppression condition is judged, if the suppression parameter does not meet the ping-pong handover suppression condition, namely, the handover of the user terminal does not need to be suppressed, a corresponding handover instruction can be generated and sent according to the measurement message to indicate the user terminal to perform the handover, and a neighboring cell with better access quality is accessed, thereby improving the communication quality of the user terminal. If the suppression parameter meets the ping-pong handover suppression condition, the handover of the user terminal can be suppressed, and then the individual offset of the first cell can be determined according to the measurement message, and the individual offset of the second cell can be determined according to the suppression parameter; the first cell individual offset is the maximum value of the measurement message of the switching event which is not reported, so that the minimum value can be selected from the first cell individual offset and the second cell individual offset, and the minimum value is used as the cell individual offset to be sent to the user terminal, so that the effectiveness of the ping-pong switching of the user terminal which is restrained at this time can be ensured, and the communication quality of the user terminal is improved.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The method for inhibiting ping-pong handover and the apparatus for inhibiting ping-pong handover provided by the present invention are introduced in detail above, and a specific example is applied in the text to explain the principle and the implementation of the present invention, and the description of the above example is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (12)
1. A method for inhibiting ping-pong handovers, comprising:
a service cell receives a switching event measurement message reported by a user terminal and acquires a suppression parameter corresponding to the user terminal;
judging whether the suppression parameters meet a suppression ping-pong switching condition;
if the suppression parameter meets the ping-pong handover suppression condition, determining a first cell individual offset according to the measurement message and determining a second cell individual offset according to the suppression parameter, wherein the first cell individual offset is the maximum value of the measurement message of the handover event which is not reported; selecting a minimum value from the first cell individual offset and the second cell individual offset, taking the minimum value as a cell individual offset, and sending the cell individual offset to the user terminal;
and if the suppression parameters do not meet the ping-pong switching suppression condition, generating a corresponding switching instruction according to the measurement message, and sending the switching instruction to the user terminal.
2. The method of claim 1, wherein the calculating the first cell personality offset from the measurement message comprises:
acquiring quality parameters of a corresponding target switching cell from the measurement message, and acquiring configuration parameters corresponding to the switching event;
and calculating the individual offset of the first cell according to the quality parameter and the configuration parameter of the target switching cell.
3. The method of claim 1, wherein determining the second cell personality offset based on the suppression parameter comprises:
obtaining ping-pong switching times of the user terminal from the suppression parameters, and obtaining a third cell individual offset and an adjustment step length corresponding to the switching event;
and calculating the individual offset of the second cell according to the individual offset of the third cell, the ping-pong switching times and the adjustment step length.
4. The method of claim 1, wherein the suppression parameters comprise: the spectrum efficiency of the transmission channel of the serving cell and the user terminal, the access duration of the user terminal and the ping-pong handover times of the user terminal,
the judging whether the suppression parameter meets a suppression ping-pong switching condition includes:
judging whether the frequency spectrum efficiency is lower than an efficiency threshold;
if the frequency spectrum efficiency is lower than an efficiency threshold, judging whether the access duration is shorter than a detection duration; if the access duration is less than the detection duration, judging whether the ping-pong switching times are greater than a quantity threshold; if the ping-pong switching times are greater than a quantity threshold, determining that the suppression parameter meets a suppression ping-pong switching condition;
otherwise, determining that the suppression parameter does not satisfy the ping-pong handover suppression condition.
5. The method of claim 1, further comprising:
timing is started when the cell individual offset is sent to the user terminal, and the execution duration of the user terminal for executing ping-pong suppression is recorded;
and judging that the execution time reaches the ping-pong suppression time, and sending the personalized offset of the third cell to the user terminal as the personalized offset of the cell.
6. The method of claim 5, further comprising:
judging that the execution duration does not reach the ping-pong suppression duration, the serving cell receiving an A2 event measurement message reported by the user terminal, executing the step of taking the third cell individual offset as the cell individual offset and sending the cell individual offset to the user terminal;
wherein, the measurement threshold corresponding to the a2 event is an inter-system handover threshold.
7. An apparatus for inhibiting ping-pong handovers, comprising:
an obtaining module, configured to receive, by a serving cell, a handover event measurement message reported by a user terminal, and obtain a suppression parameter corresponding to the user terminal;
the switching judgment module is used for judging whether the inhibition parameters meet the ping-pong switching inhibition condition;
an offset generation module, configured to determine, if the suppression parameter meets a ping-pong handover suppression condition, an individual offset of a first cell according to the measurement message and an individual offset of a second cell according to the suppression parameter, where the individual offset of the first cell is a maximum value of a measurement message for a handover event that is not reported; selecting a minimum value from the first cell individual offset and the second cell individual offset, taking the minimum value as a cell individual offset, and sending the cell individual offset to the user terminal;
and the switching instruction generating module is used for generating a corresponding switching instruction according to the measurement message and sending the switching instruction to the user terminal if the suppression parameter does not meet the suppression ping-pong switching condition.
8. The apparatus of claim 7, wherein the offset generation module comprises:
the first generation submodule is used for acquiring the quality parameters of the corresponding target switching cell from the measurement message and acquiring the configuration parameters corresponding to the switching event; and calculating the individual offset of the first cell according to the quality parameter and the configuration parameter of the target switching cell.
9. The apparatus of claim 7, wherein the offset generation module comprises:
a second generation submodule, configured to obtain ping-pong handover times of the user equipment from the suppression parameter, and obtain an individual offset and an adjustment step length of a third cell corresponding to the handover event; and calculating the individual offset of the second cell according to the individual offset of the third cell, the ping-pong switching times and the adjustment step length.
10. The apparatus of claim 7, wherein the suppression parameters comprise: the spectrum efficiency of the transmission channel of the serving cell and the user terminal, the access duration of the user terminal and the ping-pong handover times of the user terminal,
the switching judgment module is specifically configured to judge whether the spectrum efficiency is lower than an efficiency threshold;
if the frequency spectrum efficiency is lower than an efficiency threshold, judging whether the access duration is shorter than a detection duration; if the access duration is less than the detection duration, judging whether the ping-pong switching times are greater than a quantity threshold; if the ping-pong switching times are greater than a quantity threshold, determining that the suppression parameter meets a suppression ping-pong switching condition;
otherwise, determining that the suppression parameter does not satisfy the ping-pong handover suppression condition.
11. The apparatus of claim 7, further comprising:
the time length recording module is used for starting timing when the cell individual offset is sent to the user terminal and recording the execution time length of the user terminal for executing ping-pong suppression;
and the offset resetting module is used for judging that the execution time length reaches the ping-pong suppression time length, taking the third cell individual offset as the cell individual offset and sending the cell individual offset to the user terminal.
12. The apparatus of claim 11,
the offset resetting module is further configured to determine that the execution duration does not reach the ping-pong suppression duration, where the serving cell receives an a2 event measurement message reported by the user terminal, and executes the step of taking the personalized offset of the third cell as the personalized offset of the cell and sending the personalized offset of the third cell to the user terminal; wherein, the measurement threshold corresponding to the a2 event is an inter-system handover threshold.
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| CN113301610B (en) * | 2020-02-24 | 2023-09-01 | 大唐移动通信设备有限公司 | Reflux control method and device, electronic equipment and storage medium |
| CN113473548B (en) * | 2020-03-30 | 2022-11-01 | 中国移动通信集团设计院有限公司 | Terminal side same-frequency switching optimization method and device |
| WO2021253163A1 (en) * | 2020-06-15 | 2021-12-23 | Qualcomm Incorporated | Handover mechanism for restraining ping-pong handover in new radio cells |
| CN114286396B (en) * | 2020-09-27 | 2023-09-19 | 中国移动通信集团浙江有限公司 | Cell switching method, device, computing equipment and computer storage medium |
| EP4280679A4 (en) * | 2021-01-14 | 2024-03-06 | Beijing Xiaomi Mobile Software Co Ltd | Method and apparatus for conditional handover, communication device, and storage medium |
| EP4280689A4 (en) * | 2021-01-14 | 2024-01-24 | Beijing Xiaomi Mobile Software Co Ltd | Cell handover method and apparatus, and communication device and storage medium |
| CN113923738B (en) * | 2021-10-25 | 2023-09-05 | 华信咨询设计研究院有限公司 | Switching method of 5G cell under UDN architecture and related device |
| CN114040460A (en) * | 2021-11-23 | 2022-02-11 | 新华三技术有限公司成都分公司 | Ping-pong switching suppression method and device |
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