Method for preventing conflict between moving load balance and moving robustness optimization function
A mobile load balancing and robust technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as UE ping-pong handover and wireless link failure
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Embodiment 1
[0018] In the embodiment of the present invention, the Ping-Pong HO of the UE between adjacent eNBs is caused by inappropriate handover parameters. figure 1 A schematic diagram of Ping-Pong HO caused by handover threshold overlap is given.
[0019] This embodiment provides a method for avoiding the function conflict between MLB and MRO after Ping-Pong HO robustness optimization is performed. The specific implementation steps are as follows:
[0020] 1) After the MRO modules of eNB 1 and 2 that are neighbors detect that Ping-Pong HO occurs in the handover to the other eNB, they record the critical handover threshold interval when Ping-Pong HO occurs according to formula 1, which is denoted as T 1,2,PingPong . If the relevant parameters of eNB 1 or eNB 2 are updated, go to step 2, otherwise go to step 3;
[0021] T 1,2 =(H 1 -CIO 1,2 )+(H 2 -CIO 2,1 ) (1) H in Formula 1 1 is the hysteresis value (Hysteresis) of eNB i, CIO i,j The offset maintained by eNB i for eNB j (C...
Embodiment 2
[0028] In the embodiment of the present invention, Too Early HO will be triggered because the eNB uses inappropriate handover parameters. This embodiment provides a method for avoiding the function conflict between the MLB and the MRO after the Too Early HO robustness optimization is performed. The specific implementation steps are as follows:
[0029] 1) After the MRO module of eNB 1 detects that the handover to eNB 2 occurs Too Early HO, it records the hysteresis value H that caused the wrong handover 1,Early and the CIO 1,2,Early。 . where H 1,Early and the CIO 1,2,Early They are the hysteresis value (Hysteresis) used by eNB 1 and the cell offset (Cell Individual Offset) set by eNB 1 for eNB 2 when Too Early Ho occurs;
[0030] 2) Calculate the handover threshold where Too Early HO occurs, as in formula 4;
[0031] Threshold 1,2,Early =H 1,Early -CIO 1,2,Early (4)
[0032] 3) When eNB 1 is overloaded, use the MLB function for load balancing, and use formula 5 a...
Embodiment 3
[0035] In the embodiment of the present invention, Too Late HO is caused due to inappropriate handover parameters. This embodiment provides a method for avoiding the function conflict between the MLB and the MRO after the Too Late HO robustness optimization is performed. The specific implementation steps are as follows:
[0036] 1) After the MRO module of eNB 2 detects that Too Late HO occurs in the handover to eNB 1, the MRO of eNB 2 records the hysteresis value H when Too Late HO occurs 2,Late and the CIO 2,1,Late。 . where H 2,Late and the CIO 2,1,Late They are the hysteresis value (Hysteresis) used by eNB 2 and the cell offset (CellIndividual Offset) set by eNB 2 for eNB 1 when Too LateHo occurs;
[0037] 2) The MRO modules of eNB 1 and eNB 2 transmit the H and CIO when Too Late HO occurs to each other through the X2 interface. The MLB module of the eNB combines the T 1,2,PingPong , calculate the adjustable threshold range.
[0038] 3) eNB 2 calculates the handover ...
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