Method for detecting and reducing ping-pong handover effect of cellular network
First Claim
1. A method for detecting ping-pong handover effect of a cellular network, comprising:
- collecting network traffic statistic data of a plurality of items, wherein each of the items corresponds to a state change of a plurality of mobile units within cells of the cellular network, wherein the items include handover between a first cell and a second cell of the cells and at least one of mobile terminating call (MTC) and mobile originating call (MOC) within the first and second cells;
determining whether a plurality of criteria are met according to the network traffic statistic data; and
detecting the ping-pong handover effect between the cells according to a result of the determining step;
wherein the criteria comprise comparing a first parameter with a first threshold and comparing the handover from the first cell to the second cell with a second threshold, wherein the first parameter is defined according to the handover from the first cell to the second cell and at least one of the MTC and MOC within one of the first and second cells;
wherein the criteria further comprise the handover from the first cell to the second cell is symmetric to that from the second cell to the first cell, and the first parameter is symmetric to a first reverse parameter defined according to the handover from the second cell to the first cell and at least one of the MTC and MOC within one of the first and second cells.
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Abstract
A method for detecting and reducing ping-pong handover effect of a cellular network is disclosed. The method provides a systematic way to determine which cell pairs of the network have high probability of suffering from the ping-pong handover effect. The method comprises collecting network traffic statistic data of multiple items, wherein each of the items corresponds to a state change of multiple mobile units within cells of the network; determining whether a plurality of criteria are met according to the network traffic statistic data; and detecting the ping-pong effect between the cells according to the result of the determining step. The method also comprises changing a handover parameter for the cells with the ping-pong handover effect.
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Citations
15 Claims
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1. A method for detecting ping-pong handover effect of a cellular network, comprising:
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collecting network traffic statistic data of a plurality of items, wherein each of the items corresponds to a state change of a plurality of mobile units within cells of the cellular network, wherein the items include handover between a first cell and a second cell of the cells and at least one of mobile terminating call (MTC) and mobile originating call (MOC) within the first and second cells; determining whether a plurality of criteria are met according to the network traffic statistic data; and detecting the ping-pong handover effect between the cells according to a result of the determining step; wherein the criteria comprise comparing a first parameter with a first threshold and comparing the handover from the first cell to the second cell with a second threshold, wherein the first parameter is defined according to the handover from the first cell to the second cell and at least one of the MTC and MOC within one of the first and second cells; wherein the criteria further comprise the handover from the first cell to the second cell is symmetric to that from the second cell to the first cell, and the first parameter is symmetric to a first reverse parameter defined according to the handover from the second cell to the first cell and at least one of the MTC and MOC within one of the first and second cells. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for detecting ping-pong handover effect of a cellular network, comprising:
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collecting network traffic statistic data of a plurality of items, wherein each of the items corresponds to a state change of a plurality of mobile units within cells of the cellular network; determining whether a plurality of criteria are met according to the network traffic statistic data; and detecting the ping-pong handover effect between the cells according to a result of the determining step; wherein the items include non-directional handover between a first cell and neighboring cells thereof, and at least one of MTC and MOC within the first cell; wherein the criteria comprise;
(1) comparing the non-directional handover with a fourth threshold; and
(2) comparing a third parameter with a fifth threshold, wherein the third parameter is defined according to the non-directional handover and at least one of the MTC and MOC within the first cell. - View Dependent Claims (9, 10)
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11. A method for detecting ping-pong handover effect of a cellular network, comprising:
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collecting network traffic statistic data of a plurality of items, wherein each of the items corresponds to a state change of a plurality of mobile units within cells of the cellular network, wherein the items include handover between a first cell and a second cell of the cells and handover back between the first and second cells; determining whether a plurality of criteria are met according to the network traffic statistic data; and detecting the ping-pong handover effect between the cells according to a result of the determining step; wherein the criteria comprise comparing a fourth parameter with a seventh threshold, wherein the fourth parameter is defined according to the handover and the handover back between the first and second cells. - View Dependent Claims (12, 13, 14, 15)
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Specification