CN110809283A - Method and device for inhibiting ping-pong handover - Google Patents
Method and device for inhibiting ping-pong handover Download PDFInfo
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- CN110809283A CN110809283A CN201810886738.0A CN201810886738A CN110809283A CN 110809283 A CN110809283 A CN 110809283A CN 201810886738 A CN201810886738 A CN 201810886738A CN 110809283 A CN110809283 A CN 110809283A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- 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
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- 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
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
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 source cell receives a measurement report reported by a user terminal; determining longitude and latitude information corresponding to the user terminal according to the measurement report; judging whether the user terminal is located in a ping-pong suppression area of the source cell or not according to longitude and latitude information corresponding to the user terminal; if the user terminal is located in the ping-pong suppression zone of the source cell, ignoring the measurement report; and if the user terminal is positioned outside the ping-pong suppression area of the source cell, sending a switching instruction to the user terminal according to the measurement report. Because the measurement error of the longitude and latitude information is far smaller than the error of the measurement parameter depending on the wireless signal, the accuracy of inhibiting ping-pong switching can be improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a ping-pong handover suppression method and a ping-pong handover suppression device.
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-synchronization 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 quantity and various service demands.
Because the wireless signal is greatly influenced by the environment, the signal strength of two cells may be sent to change dramatically at a certain position in the coverage area of the wireless signal, and then the user terminal at the position can switch back and forth between the two cells; thereby degrading the communication quality of the user terminal. In the prior art, ping-pong handover is suppressed according to a signal strength offset of a cell, that is, whether the signal strength offset of the cell meets an offset threshold is judged, and if yes, a user terminal is handed over; however, due to the instability of the wireless signal, the offset measurement value is inaccurate, so that the accuracy of inhibiting ping-pong handover is low.
Disclosure of Invention
The embodiment of the invention provides a method for inhibiting ping-pong handover, which aims to improve the accuracy of inhibiting ping-pong handover.
Correspondingly, the embodiment of the invention also provides a ping-pong handover inhibiting device, 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 suppressing ping-pong handover, which specifically comprises: a source cell receives a measurement report reported by a user terminal; determining longitude and latitude information corresponding to the user terminal according to the measurement report; judging whether the user terminal is located in a ping-pong suppression area of the source cell or not according to longitude and latitude information corresponding to the user terminal; if the user terminal is located in the ping-pong suppression zone of the source cell, ignoring the measurement report; and if the user terminal is positioned outside the ping-pong suppression area of the source cell, sending a switching instruction to the user terminal according to the measurement report.
Optionally, the determining, according to the longitude and latitude information corresponding to the user terminal, whether the user terminal is located in the ping-pong suppression area of the source cell includes: determining the distance between the user terminal and the base station of the source cell according to the longitude and latitude information corresponding to the user terminal and the longitude and latitude information corresponding to the base station of the source cell; determining a ping-pong suppression area of the source cell and the radius of the ping-pong suppression area according to the signal coverage area and the ping-pong handover weight of the source cell; and judging whether the user terminal is positioned in the ping-pong suppression area of the source cell or not according to the distance and the radius of the ping-pong suppression area.
Optionally, determining whether the user equipment is located in the ping-pong suppression zone of the source cell according to the distance and the radius of the ping-pong suppression zone includes: judging whether the distance is smaller than the radius of the ping-pong suppression area; if the distance is smaller than the radius of the ping-pong suppression area, determining that the user terminal is located in the ping-pong suppression area of the source cell; and if the distance is greater than the radius of the ping-pong suppression area, determining that the user terminal is located outside the ping-pong suppression area of the source cell.
Optionally, the method further comprises: determining a target cell according to a measurement report, and judging whether the target cell belongs to a ping-pong handover monitoring group corresponding to the user terminal, wherein the ping-pong handover monitoring group comprises at least two cells; if the target cell belongs to a ping-pong handover monitoring group corresponding to the user terminal, executing a step of determining longitude and latitude information corresponding to the user terminal according to the measurement report; and if the target cell does not belong to the ping-pong handover monitoring group corresponding to the user terminal, executing a step of sending a handover instruction to the user terminal according to the measurement report.
Optionally, the method further comprises: if the target cell belongs to the ping-pong handover monitoring group corresponding to the user terminal, judging whether the handover times corresponding to the target cell reaches a handover threshold value; if the switching times corresponding to the target cell reach a switching threshold value, executing a step of determining longitude and latitude information corresponding to the user terminal according to the measurement report; and if the switching times corresponding to the target cell do not reach a switching threshold value, executing a step of sending a switching instruction to the user terminal according to the measurement report.
The embodiment of the invention also discloses a device for inhibiting ping-pong switching, which specifically comprises: a report receiving module, configured to receive, by a source cell, a measurement report reported by a user terminal; the information determining module is used for determining longitude and latitude information corresponding to the user terminal according to the measurement report; the position judgment module is used for judging whether the user terminal is positioned in a ping-pong suppression area of the source cell according to the longitude and latitude information corresponding to the user terminal; an ignoring module, configured to ignore the measurement report if the user equipment is located in a ping-pong suppression zone of the source cell; and the sending module is used for sending a switching instruction to the user terminal according to the measurement report if the user terminal is positioned outside the ping-pong suppression area of the source cell.
Optionally, the position determining module includes: a distance determining submodule, configured to determine a distance between the user terminal and a base station of the source cell according to the longitude and latitude information corresponding to the user terminal and the longitude and latitude information corresponding to the base station of the source cell; the area determination submodule is used for determining a ping-pong suppression area of the source cell and the radius of the ping-pong suppression area according to the signal coverage area and the ping-pong switching weight of the source cell; and the judging submodule is used for judging whether the user terminal is positioned in the ping-pong suppression area of the source cell according to the distance and the radius of the ping-pong suppression area.
Optionally, the determining sub-module is specifically configured to determine whether the distance is smaller than a radius of the ping-pong suppression area; if the distance is smaller than the radius of the ping-pong suppression area, determining that the user terminal is located in the ping-pong suppression area of the source cell; and if the distance is greater than the radius of the ping-pong suppression area, determining that the user terminal is located outside the ping-pong suppression area of the source cell.
Optionally, the apparatus further comprises: a cell judging module, configured to determine a target cell according to a measurement report, and judge whether the target cell belongs to a ping-pong handover monitoring group corresponding to the user equipment, where the ping-pong handover monitoring group includes at least two cells; the information determining module is configured to execute a step of determining longitude and latitude information corresponding to the user terminal according to the measurement report if the target cell belongs to a ping-pong handover monitoring group corresponding to the user terminal; and the sending module is used for executing the step of sending a switching instruction to the user terminal according to the measurement report if the target cell does not belong to the ping-pong switching monitoring group corresponding to the user terminal.
Optionally, the apparatus further comprises: a frequency judging module, configured to judge whether the switching frequency corresponding to the target cell reaches a switching threshold value if the target cell belongs to a ping-pong switching monitoring group corresponding to the user terminal; the information determining module is configured to execute a step of determining longitude and latitude information corresponding to the user terminal according to the measurement report if the number of times of handover corresponding to the target cell reaches a handover threshold; and the sending module is used for executing the step of sending a switching instruction to the user terminal according to the measurement report if the switching times corresponding to the target cell reaches a switching threshold value.
Compared with the prior art, the embodiment of the invention has the following advantages:
in the embodiment of the invention, after a source cell receives a measurement report of a user terminal, longitude and latitude information of the user terminal can be obtained from the measurement report; whether the user terminal is located in a ping-pong suppression area of the source cell can be further judged according to the longitude and latitude information of the user terminal; if the user terminal is located in the ping-pong suppression area of the source cell, determining that the handover is ping-pong handover, and at this time, suppressing the handover of the user terminal to the target cell, and if the user terminal is located outside the ping-pong suppression area of the source cell, determining that the handover is not ping-pong handover, and then sending a handover instruction to the user terminal; because the measurement error of the longitude and latitude information is far smaller than the error of the measurement parameter depending on the wireless signal, the accuracy of inhibiting ping-pong switching can be improved.
Drawings
Fig. 1 is a flowchart illustrating steps of an embodiment of a ping-pong handover suppression method according to the present invention;
FIG. 2 is a flowchart illustrating steps of another embodiment of a ping-pong handover suppression method of the present invention;
FIG. 3 is a schematic diagram of a ping-pong suppression area, in accordance with an embodiment of the present invention;
FIG. 4 is a block diagram of an embodiment of a ping-pong handover suppression apparatus according to the present invention;
fig. 5 is a block diagram of another ping-pong handover suppression apparatus 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 whether the current switching of the user terminal is ping-pong switching is judged based on the longitude and latitude information of the user terminal; if the user terminal is located outside the ping-pong suppression area of the source cell, determining that the switching is ping-pong switching, and at the moment, inhibiting the user terminal from being switched to the target cell, and if the user terminal is located outside the ping-pong suppression area of the source cell, determining that the switching is not ping-pong switching, and sending a switching instruction to the user terminal; because the measurement error of the longitude and latitude information is far smaller than the error of the measurement parameter depending on the wireless signal, the accuracy of inhibiting ping-pong switching can be improved.
Referring to fig. 1, a flowchart illustrating steps of an embodiment of a ping-pong handover suppression method according to the present invention is shown, and specifically, the method may include the following steps:
In the embodiment of the present invention, the source cell is a serving cell of a user terminal, and after accessing the source cell, the user terminal can measure the signal strength of a neighboring cell according to a measurement event issued by the source cell, and when the signal strength of the neighboring cell meets the reporting condition of a corresponding measurement event, a corresponding measurement report is reported to the source cell; to request a handover to the neighboring cell (i.e., the target cell) from the source cell. Furthermore, the source cell may receive a measurement report reported by the user terminal, where the measurement report may include various parameters, such as a relevant parameter of the target cell, such as an identifier of the target cell, a relevant parameter related to signal strength of the target cell, and location information of the user terminal, such as latitude and longitude information.
Due to instability (such as sudden and weak) of a wireless signal, ping-pong handover of a user terminal between a source cell and a target can be caused, and communication quality of the user terminal is influenced; therefore, after receiving the measurement report of the user terminal, the source cell can judge whether the current switching of the user terminal is ping-pong switching according to the measurement report; if the switching of the user terminal is determined to be ping-pong switching, the switching of the user terminal can be inhibited; if the switching of the user terminal is not determined to be ping-pong switching, the user terminal can be allowed to be switched to the target cell. The method for judging whether the current switching of the user terminal is the ping-pong switching comprises the following specific steps:
and step 102, determining longitude and latitude information corresponding to the user terminal according to the measurement report.
And 103, judging whether the user terminal is positioned in the ping-pong suppression area of the source cell according to the longitude and latitude information corresponding to the user terminal.
In this embodiment of the present invention, for each cell, a corresponding ping-pong suppression area may be set for the cell, the ping-pong suppression area may be a sector area, a central angle of the ping-pong suppression area may be smaller than or equal to a central angle of a signal coverage area of the cell, and a radius of the ping-pong suppression area may be smaller than a radius of the signal coverage area of the cell. The signal quality of the cell in the ping-pong suppression area of the cell is superior to that of the neighboring cell, and when the signal of the cell or the neighboring cell is suddenly strong or weak, the signal quality of the cell in the ping-pong suppression area may be inferior to that of the neighboring cell, which causes the ping-pong handover of the user terminal; therefore, in order to inhibit the ping-pong handover of the user terminal, when the user terminal is determined to be located in the ping-pong inhibition area of the cell, the user terminal can be inhibited from switching out of the cell; the user terminal may be allowed to hand out of the cell when it is determined that the user terminal is located outside the suppression area of the cell. Therefore, the embodiment of the invention can judge whether the current switching of the user terminal is the ping-pong switching by judging whether the user terminal is positioned in the ping-pong suppression area of the source cell; if the user terminal is located in the ping-pong suppression area of the source cell, it may be determined that the handover is the ping-pong handover, and if the user terminal is located outside the ping-pong suppression area of the source cell, it may be determined that the handover is not the ping-pong handover. The longitude and latitude information of the user terminal can be obtained from the measurement report, and then whether the user terminal is located in a ping-pong suppression area of the source cell is judged according to the longitude and latitude information of the user terminal; if the user terminal is located in the ping-pong suppression zone of the source cell, step 104 may be performed; if the ue is located outside the ping-pong suppression zone of the source cell, step 105 may be performed.
When the embodiment of the invention determines that the user terminal is positioned in the ping-pong suppression area of the source cell, the embodiment of the invention determines that the switching is ping-pong switching, and at the moment, the measurement report can be ignored and no switching instruction is sent to the user terminal, thereby suppressing the user terminal from being switched to the target cell.
And 105, sending a switching instruction to the user terminal according to the measurement report.
When the embodiment of the invention determines that the user terminal is positioned outside the ping-pong suppression area of the source cell, the switching can be determined not to be the ping-pong switching, at this time, a switching instruction can be generated according to the measurement report, and then the switching instruction is sent to the user terminal; and after receiving the switching instruction, the user terminal can switch to the target cell according to the switching instruction.
In the embodiment of the invention, after a source cell receives a measurement report of a user terminal, longitude and latitude information of the user terminal can be obtained from the measurement report; whether the user terminal is located in a ping-pong suppression area of the source cell can be further judged according to the longitude and latitude information of the user terminal; if the user terminal is located in the ping-pong suppression area of the source cell, determining that the handover is ping-pong handover, and at this time, suppressing the handover of the user terminal to the target cell, and if the user terminal is located outside the ping-pong suppression area of the source cell, determining that the handover is not ping-pong handover, and then sending a handover instruction to the user terminal; because the measurement error of the longitude and latitude information is far smaller than the error of the signal strength offset, the accuracy of inhibiting ping-pong switching can be improved.
In another embodiment of the present invention, a corresponding ping-pong handover monitoring group may be generated for each ue, wherein the ping-pong handover may occur between two cells, such as between cell 1 and cell 2, i.e. repeatedly from cell 1 → cell 2, then from cell 2 → cell 1; or between multiple cells, such as cell 3, cell 4, and cell 5, i.e., repeatedly from cell 3 → cell 4 → cell 5, then from cell 5 → cell 4 → cell 3; therefore, the maximum value of the number of cells included in the ping-pong handover monitoring group is N, where N is an integer greater than 1, and may be set to 5 as required. The method includes the steps that a cell can be generated according to historical switching of a user terminal, for example, if a ping-pong switching monitoring group of the user terminal is empty, and the user terminal is switched from a cell 1 to a cell 3, the cell 1 and the cell 3 can be added into the ping-pong switching monitoring group; if the ue is handed over from cell 3 to cell 5, then cell 5 may be added to the ping-pong handover monitoring group. The ping-pong handover monitoring group adopts a first-in first-out principle, for example, if the user terminal is handed over from the cell 5 to the cell 4, and the maximum value of the number of cells included in the ping-pong handover monitoring group is 3, the cell 1 can be deleted from the ping-pong handover monitoring group, and the cell 4 is added to the ping-pong handover monitoring group. And then, whether the target cell belongs to the ping-pong handover group of the user terminal or not can be judged firstly, when the target cell is one of the ping-pong handover monitoring groups of the user terminal, the possibility that the current handover of the user terminal is the ping-pong handover can be determined, and at the moment, whether the user terminal is positioned in the ping-pong suppression area of the source cell or not is judged, so that whether the current handover of the user terminal is the ping-pong handover or not is further judged. When the target cell is not any cell in the ping-pong handover monitoring group of the user terminal, determining that the current handover of the user terminal is not ping-pong handover, and directly allowing the user terminal to be switched to the target cell; thereby further improving the accuracy and efficiency of inhibiting ping-pong handover,
referring to fig. 2, a flowchart of steps of another embodiment of a ping-pong handover suppression method according to the present invention is shown, and specifically, the method may include the following steps:
In the embodiment of the invention, a user terminal measures the signal intensity of a neighboring cell according to a measurement event issued by a source cell, and when the signal intensity of the neighboring cell meets the reporting condition corresponding to the corresponding measurement event, a corresponding measurement report is reported to the source cell; to request a handover to the neighboring cell (i.e., the target cell) from the source cell. For example, if the measurement event is an A3 measurement event, when the quality of the co-frequency neighboring cell measured by the user terminal is higher than that of the serving cell, a measurement report corresponding to the A3 measurement event may be sent to the source cell; for another example, if the measurement event is an a4 measurement event, when the quality of the intra-frequency/inter-frequency neighboring cell measured by the ue is higher than the set threshold, a measurement report corresponding to the a4 measurement event may be sent to the source cell. And the source cell can receive a measurement report reported by the user terminal, wherein the measurement report can be used for requesting to switch to the target cell and can comprise longitude and latitude information corresponding to the user terminal.
A large shopping mall may be covered by signals of multiple cells, and a user terminal of the user terminal is switched among the cells in the process that the user walks in the shopping mall, so that the cells in a ping-pong switching monitoring group of the user terminal are updated to the cells; when the user walks around the mall, the corresponding ue of the user is likely to have ping-pong handover between the cells. Therefore, in order to prevent ping-pong handover of the user terminal, whether the current handover of the user terminal is ping-pong handover can be preliminarily judged; the target cell may be determined according to the measurement report, and then the identifier of the target cell may be compared with the identifiers of the cells in the ping-pong handover monitoring group to determine whether the target cell belongs to the ping-pong handover monitoring group corresponding to the user terminal. If the target cell belongs to the ping-pong handover monitoring group corresponding to the user terminal, it may be preliminarily determined that the current handover of the user terminal may be the ping-pong handover, step 203 may be performed, and if the target cell does not belong to the ping-pong handover monitoring group corresponding to the user terminal, it may be determined that the current handover of the user terminal is not the ping-pong handover, step 207 may be performed.
Each cell in the ping-pong handover monitoring group has a corresponding handover time, and when it is determined that the target cell belongs to the ping-pong handover monitoring group corresponding to the user terminal, the handover time corresponding to the target cell in the ping-pong handover monitoring group can be increased by 1; when it is determined that the target cell does not belong to the ping-pong handover monitoring group corresponding to the user terminal, the target cell may be added to the ping-pong handover monitoring group, and the number of handovers corresponding to the target cell is set to 1. Correspondingly, if the source cell belongs to the ping-pong handover monitoring group corresponding to the user terminal, the number of handovers corresponding to the source cell in the ping-pong handover monitoring group can be increased by 1; if the source cell does not belong to the ping-pong handover monitoring group corresponding to the user terminal, adding the source cell into the ping-pong handover monitoring group, and setting the number of handovers corresponding to the source cell to 1; and then updating the ping-pong handover monitoring group according to the switched cell of the user terminal.
In an example of the present invention, for example, a ping-pong handover monitoring group of a user equipment comprises: cell 1, cell 3, cell 5 and cell 4, the maximum value of the number of the cells is 4, and the source cell of the user terminal is cell 6; if the target cell is cell 7, it is determined that the handover of the user equipment is not ping-pong handover, cell 1 and cell 3 may be deleted from the ping-pong handover monitoring group, cell 7 is added to the ping-pong handover monitoring group, the number of handovers corresponding to cell 7 is set to 1, cell 6 is added to the ping-pong handover monitoring group, and the number of handovers corresponding to cell 6 is set to 1. If the target cell is the cell 5, it is determined that the current handover of the user terminal may be ping-pong handover, the number of handovers corresponding to the cell 5 of the ping-pong handover monitoring group may be increased by 1, the cell 1 is deleted, the cell 6 is added to the ping-pong handover monitoring group, and the number of handovers corresponding to the cell 6 is set to 1.
In the embodiment of the present invention, after determining that a target cell belongs to a ping-pong handover monitoring group, it may be determined whether a handover number corresponding to the target cell reaches a handover threshold, and if the handover number corresponding to the target cell reaches the handover threshold, it may be determined that this handover of a user terminal is likely to be a ping-pong handover, step 204 may be performed to further determine whether this handover of the user terminal is a ping-pong handover; and if the switching times corresponding to the target cell do not reach the switching threshold value, determining that the switching of the user terminal is not ping-pong switching. Step 207 may be performed. Wherein, the switching threshold value can be set according to requirements.
And step 204, determining longitude and latitude information corresponding to the user terminal according to the measurement report.
In the embodiment of the present invention, when it is determined that the number of times of handover of the target cell reaches the handover threshold, whether the user terminal is located in the ping-pong suppression area of the source cell may be determined according to the longitude and latitude information corresponding to the user terminal; if the ue is located in the ping-pong suppression zone of the source cell, step 206 may be performed, and if the ue is located outside the ping-pong suppression zone of the source cell, step 207 may be performed. Wherein the following substeps 51-53 may be implemented to determine whether the user terminal is located in the ping-pong suppression zone of the source cell:
and a substep 51 of determining the distance between the user terminal and the base station of the source cell according to the longitude and latitude information corresponding to the user terminal and the longitude and latitude information corresponding to the base station of the source cell.
And a substep 52 of determining a ping-pong suppression zone of the source cell and a radius of the ping-pong suppression zone according to the signal coverage area and the ping-pong handover weight of the source cell. The product of the radius of the signal coverage area of the source cell and the ping-pong handover weight is taken as the radius, the area taking the sector central angle of the signal coverage area of the source cell as the central angle is taken as the ping-pong suppression area, and the radius of the ping-pong suppression area is the product of the radius of the signal coverage area of the source cell and the ping-pong handover weight. Wherein, the ping-pong switching weight can be set according to the requirement.
And a substep 53, determining whether the ue is located in the ping-pong mitigation area of the source cell according to the distance and the radius of the ping-pong mitigation area. Wherein, whether the distance is smaller than the radius of the ping-pong suppression area can be judged; if the distance is smaller than the radius of the ping-pong suppression area, determining that the user terminal is located in the ping-pong suppression area of the source cell; and if the distance is greater than the radius of the ping-pong suppression area, determining that the user terminal is located outside the ping-pong suppression area of the source cell.
In an example of the present invention, referring to fig. 3, C1 is a source cell, C2 is a target cell, eB1 is a location of a C1 base station, R1 is a radius of a sector covered by a C1 signal, and V1 is a ping-pong handover weight; wherein, the shaded area in the figure is a ping-pong suppression area, and R1 × V1 is the radius of the ping-pong suppression area. P is the location of the ue, D1 is the distance between P and eB1, where P is located in the ping-pong suppression zone, and the current handover of the ue is determined to be ping-pong handover.
When the embodiment of the invention determines that the user terminal is positioned in the ping-pong suppression area of the source cell, the embodiment of the invention determines that the switching is ping-pong switching, and at the moment, the measurement report can be ignored and no switching instruction is sent to the user terminal, thereby suppressing the user terminal from being switched to the target cell.
The embodiment of the invention determines that the user terminal is positioned outside the ping-pong suppression area of the source cell, or determines that the target cell does not belong to the ping-pong monitoring group of the user terminal, or determines that the switching is not the ping-pong switching when the switching frequency of the target cell does not reach the switching threshold value, and then generates a switching instruction according to the measurement report, and then sends the switching instruction to the user terminal; and after receiving the switching instruction, the user terminal can switch to the target cell according to the switching instruction.
In the embodiment of the invention, whether the user terminal is positioned in a ping-pong suppression area of a source cell is judged according to the longitude and latitude information of the user terminal; if the user terminal is located in the ping-pong suppression area of the source cell, determining that the handover is ping-pong handover, and at this time, suppressing the handover of the user terminal to the target cell, and if the user terminal is located outside the ping-pong suppression area of the source cell, determining that the handover is not ping-pong handover, and then sending a handover instruction to the user terminal; because the measurement error of the longitude and latitude information is far smaller than the error of the signal strength offset, the accuracy of inhibiting ping-pong switching can be improved.
Further, before determining whether the user terminal is located in the ping-pong suppression area of the source cell, it may be determined whether the target cell belongs to the ping-pong handover monitoring group corresponding to the user terminal, and if the target cell belongs to the ping-pong handover monitoring group corresponding to the user terminal, it is determined whether the number of times of handover corresponding to the target cell reaches a handover threshold, and if the number of times of handover corresponding to the target cell reaches the handover threshold, it is determined whether the user terminal is located in the ping-pong suppression area of the source cell; and further improves the accuracy of inhibiting ping-pong handover. When the target cell does not belong to the ping-pong handover monitoring group corresponding to the user terminal, or the number of times of handover corresponding to the target cell does not reach a handover threshold, directly determining that the current handover of the user terminal is ping-pong handover, and then sending a handover instruction to the user terminal according to the measurement report; without judging whether the user terminal is located in the ping-pong suppression area of the source cell; and further improves the efficiency of inhibiting ping-pong handover.
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. 4, a block diagram of a structure of an embodiment of a ping-pong handover suppression device of the present invention is shown, and specifically, the structure may include the following modules:
a report receiving module 401, configured to receive, by a source cell, a measurement report reported by a user equipment;
an information determining module 402, configured to determine longitude and latitude information corresponding to the user terminal according to the measurement report;
a location determining module 403, configured to determine whether the user terminal is located in a ping-pong suppression area of the source cell according to the longitude and latitude information corresponding to the user terminal;
an ignoring module 404, configured to ignore the measurement report if the ue is located in a ping-pong suppression zone of the source cell;
a sending module 405, configured to send a handover instruction to the user terminal according to the measurement report if the user terminal is located outside the ping-pong suppression area of the source cell.
Referring to fig. 5, a block diagram of a ping-pong handover suppression apparatus according to an embodiment of the present invention is shown, and in an optional embodiment of the present invention, the apparatus further includes: a cell determining module 406 and a frequency determining module 407, wherein:
the cell determining module 406 is configured to determine a target cell according to a measurement report, and determine whether the target cell belongs to a ping-pong handover monitoring group corresponding to the user equipment, where the ping-pong handover monitoring group includes at least two cells;
the information determining module 402 is configured to, if the target cell belongs to the ping-pong handover monitoring group corresponding to the user terminal, perform a step of determining longitude and latitude information corresponding to the user terminal according to the measurement report;
the sending module 405 is configured to execute the step of sending a handover instruction to the user terminal according to the measurement report if the target cell does not belong to the ping-pong handover monitoring group corresponding to the user terminal.
The frequency judging module 407 is configured to judge whether the switching frequency corresponding to the target cell reaches a switching threshold value if the target cell belongs to the ping-pong switching monitoring group corresponding to the user terminal;
the information determining module 402 is configured to, if the number of times of handover corresponding to the target cell reaches a handover threshold, perform a step of determining latitude and longitude information corresponding to the user terminal according to the measurement report;
the sending module 405 is configured to execute a step of sending a handover instruction to the user equipment according to the measurement report if the number of handovers corresponding to the target cell does not reach a handover threshold.
In an optional embodiment of the present invention, the position determining module 403 includes:
a distance determining submodule 4031, configured to determine, according to the longitude and latitude information corresponding to the user terminal and the longitude and latitude information corresponding to the base station of the source cell, a distance between the user terminal and the base station of the source cell;
an area determining submodule 4032, configured to determine a ping-pong suppression area of the source cell and a radius of the ping-pong suppression area according to the signal coverage area and the ping-pong handover weight of the source cell;
a determining submodule 4033, configured to determine, according to the distance and the radius of the ping-pong suppression area, whether the user terminal is located in the ping-pong suppression area of the source cell.
In an optional embodiment of the present invention, the determining sub-module 4033 is specifically configured to determine whether the distance is smaller than a radius of the ping-pong suppression area; if the distance is smaller than the radius of the ping-pong suppression area, determining that the user terminal is located in the ping-pong suppression area of the source cell; and if the distance is greater than the radius of the ping-pong suppression area, determining that the user terminal is located outside the ping-pong suppression area of the source cell.
In the embodiment of the invention, after a source cell receives a measurement report of a user terminal, longitude and latitude information of the user terminal can be obtained from the measurement report; whether the user terminal is located in a ping-pong suppression area of the source cell can be further judged according to the longitude and latitude information of the user terminal; if the user terminal is located in the ping-pong suppression area of the source cell, determining that the handover is ping-pong handover, and at this time, suppressing the handover of the user terminal to the target cell, and if the user terminal is located outside the ping-pong suppression area of the source cell, determining that the handover is not ping-pong handover, and then sending a handover instruction to the user terminal; because the measurement error of the longitude and latitude information is far smaller than the error of the signal strength offset, the accuracy of inhibiting ping-pong switching can be 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 ping-pong handover suppression method and the ping-pong handover suppression device provided by the invention are described in detail above, and a specific example is applied in the text to explain the principle and the implementation of the invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the invention; 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 (10)
1. A method for suppressing ping-pong handover, comprising:
a source cell receives a measurement report reported by a user terminal;
determining longitude and latitude information corresponding to the user terminal according to the measurement report;
judging whether the user terminal is located in a ping-pong suppression area of the source cell or not according to longitude and latitude information corresponding to the user terminal;
if the user terminal is located in the ping-pong suppression zone of the source cell, ignoring the measurement report;
and if the user terminal is positioned outside the ping-pong suppression area of the source cell, sending a switching instruction to the user terminal according to the measurement report.
2. The method of claim 1, wherein the determining whether the ue is located in the ping-pong suppression zone of the source cell according to the longitude and latitude information corresponding to the ue comprises:
determining the distance between the user terminal and the base station of the source cell according to the longitude and latitude information corresponding to the user terminal and the longitude and latitude information corresponding to the base station of the source cell;
determining a ping-pong suppression area of the source cell and the radius of the ping-pong suppression area according to the signal coverage area and the ping-pong handover weight of the source cell;
and judging whether the user terminal is positioned in the ping-pong suppression area of the source cell or not according to the distance and the radius of the ping-pong suppression area.
3. The method of claim 2, wherein determining whether the ue is located in a ping-pong suppression zone of the source cell according to the distance and a radius of the ping-pong suppression zone comprises:
judging whether the distance is smaller than the radius of the ping-pong suppression area;
if the distance is smaller than the radius of the ping-pong suppression area, determining that the user terminal is located in the ping-pong suppression area of the source cell;
and if the distance is greater than the radius of the ping-pong suppression area, determining that the user terminal is located outside the ping-pong suppression area of the source cell.
4. The method of claim 1, further comprising:
determining a target cell according to a measurement report, and judging whether the target cell belongs to a ping-pong handover monitoring group corresponding to the user terminal, wherein the ping-pong handover monitoring group comprises at least two cells;
if the target cell belongs to a ping-pong handover monitoring group corresponding to the user terminal, executing a step of determining longitude and latitude information corresponding to the user terminal according to the measurement report;
and if the target cell does not belong to the ping-pong handover monitoring group corresponding to the user terminal, executing a step of sending a handover instruction to the user terminal according to the measurement report.
5. The method of claim 4, further comprising:
if the target cell belongs to the ping-pong handover monitoring group corresponding to the user terminal, judging whether the handover times corresponding to the target cell reaches a handover threshold value;
if the switching times corresponding to the target cell reach a switching threshold value, executing a step of determining longitude and latitude information corresponding to the user terminal according to the measurement report;
and if the switching times corresponding to the target cell do not reach a switching threshold value, executing a step of sending a switching instruction to the user terminal according to the measurement report.
6. A ping-pong handover suppression device, comprising:
a report receiving module, configured to receive, by a source cell, a measurement report reported by a user terminal;
the information determining module is used for determining longitude and latitude information corresponding to the user terminal according to the measurement report;
the position judgment module is used for judging whether the user terminal is positioned in a ping-pong suppression area of the source cell according to the longitude and latitude information corresponding to the user terminal;
an ignoring module, configured to ignore the measurement report if the user equipment is located in a ping-pong suppression zone of the source cell;
and the sending module is used for sending a switching instruction to the user terminal according to the measurement report if the user terminal is positioned outside the ping-pong suppression area of the source cell.
7. The apparatus of claim 6, wherein the location determination module comprises:
a distance determining submodule, configured to determine a distance between the user terminal and a base station of the source cell according to the longitude and latitude information corresponding to the user terminal and the longitude and latitude information corresponding to the base station of the source cell;
the area determination submodule is used for determining a ping-pong suppression area of the source cell and the radius of the ping-pong suppression area according to the signal coverage area and the ping-pong switching weight of the source cell;
and the judging submodule is used for judging whether the user terminal is positioned in the ping-pong suppression area of the source cell according to the distance and the radius of the ping-pong suppression area.
8. The apparatus of claim 7,
the judgment submodule is specifically configured to judge whether the distance is smaller than the radius of the ping-pong suppression area; if the distance is smaller than the radius of the ping-pong suppression area, determining that the user terminal is located in the ping-pong suppression area of the source cell; and if the distance is greater than the radius of the ping-pong suppression area, determining that the user terminal is located outside the ping-pong suppression area of the source cell.
9. The apparatus of claim 6, further comprising:
a cell judging module, configured to determine a target cell according to a measurement report, and judge whether the target cell belongs to a ping-pong handover monitoring group corresponding to the user equipment, where the ping-pong handover monitoring group includes at least two cells;
the information determining module is configured to execute a step of determining longitude and latitude information corresponding to the user terminal according to the measurement report if the target cell belongs to a ping-pong handover monitoring group corresponding to the user terminal;
and the sending module is used for executing the step of sending a switching instruction to the user terminal according to the measurement report if the target cell does not belong to the ping-pong switching monitoring group corresponding to the user terminal.
10. The apparatus of claim 9, further comprising:
a frequency judging module, configured to judge whether the switching frequency corresponding to the target cell reaches a switching threshold value if the target cell belongs to a ping-pong switching monitoring group corresponding to the user terminal;
the information determining module is configured to execute a step of determining longitude and latitude information corresponding to the user terminal according to the measurement report if the number of times of handover corresponding to the target cell reaches a handover threshold;
and the sending module is used for executing the step of sending a switching instruction to the user terminal according to the measurement report if the switching times corresponding to the target cell do not reach a switching threshold value.
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