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Method and system for realizing small area changing

A cell, change operation technology, applied in the communication between multiple stations, network traffic/resource management, electrical components and other directions, can solve the problem of not being able to well meet the needs of LTE system cell reselection or cell handover, waste of system resources , bandwidth problems, etc., to reduce cell reselection or handover, meet bandwidth requirements, and improve throughput.

Active Publication Date: 2007-10-10
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

Both of these schemes introduce additional processing or signaling overhead
[0030] The second case is: a low-capability UE resides in a cell with a high system bandwidth. The problem that may arise in this case is that since each UE shares system resources, although the low-capability UE has no impact on the shared resources of the system, it is For some public resources, the access of low-capability UEs will cause a certain waste of system resources
[0031] At the same time, the existing cell handover processing scheme also has the same bandwidth problem as in the cell reselection processing scheme
[0032] Therefore, the existing cell reselection or cell handover implementation schemes cannot well meet the needs of cell reselection or cell handover in the LTE system

Method used

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  • Method and system for realizing small area changing

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specific Embodiment approach 1

[0076] Add a bandwidth impact offset in the reselection sorting criteria as a bandwidth impact parameter, or offset Qoffset bandwidth To reflect the impact of bandwidth factors in cell reselection, the original UMTS R criterion without using HCS and without considering MBMS can be modified as follows:

[0077] R s =Q meas，s +Qhyst s ;

[0078] R n =Q meas，n -Qoffset s，n +Qoffset bandwidth

[0079] The influence of the bandwidth factor is reflected by the offset amount, that is, when the adjacent cells are sorted, the separate bandwidth influence factor Qoffset is added bandwidth , the specific value of which can be defined dynamically by the operator according to the actual situation of the network.

specific Embodiment approach 2

[0080] Add a bandwidth influence factor in the reselection sorting criterion, that is, the bandwidth influence parameter variable is used as the bandwidth influence parameter, and modify the bias value defined by the system by default, so that the R criterion of UMTS without using HCS and without considering MBMS can be modified for:

[0081] R s =Q meas，s +Qhyst s ;

[0082] R n =Q meas，n -F bw *Qoffset s，n ;

[0083] The impact of bandwidth factors is reflected by means of bandwidth impact factors, that is, when sorting adjacent cells, in Qoffset s，n multiplied by a bandwidth impact factor F bw , the ranking value of adjacent cells is affected by the change of this bandwidth influencing factor. f bw The specific ways of impact are as follows:

[0084] When the UE's bandwidth capability matches the cell bandwidth, F bw The value is 1;

[0085] When the bandwidth capability of the UE does not match the bandwidth of the cell, F bw The larger the value;

[0086] f ...

specific Embodiment approach 3

[0091] In the selection time of reselecting the sorting criterion, the bandwidth scaling factor is increased to correct the selection time. Specifically: in consideration of the selection time Tselection, the bandwidth scaling factor is increased to reflect that the time for the signal required by cells with different bandwidth matching degrees to continue to be better than the source cell is different, so that the UE selects a bandwidth matching and suitable cell. for prudence.

[0092] That is, in the third specific embodiment, the time Tselection for cell reselection is scaled by increasing the bandwidth scaling factor: "bandwidth dependent ScalingFactor". The manifestation of this effect is T band selection =F bw *T selection ; Among them, the parameter F bw See the previous description for an explanation.

[0093] In the above three specific implementations, for specific implementations 1 and 2, the essence is to adjust the ordering of adjacent cells in the process o...

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Abstract

The method comprises: respectively determining the bandwidth information of user's terminal and the bandwidth information of cell, and according the bandwidth information of user's terminal and the bandwidth information of cell, setting the bandwidth influence parameters for the user's terminal, and adjusting the sequence of cell; selecting a cell. The invention can make the UE capable of selecting a suitable residence cell according to the bandwidth required by service.

Description

technical field [0001] The present invention relates to the technical field of cell change, in particular to a system with multiple options for system bandwidth and fixed bandwidth capacity of UE, such as a cell change processing technology considering bandwidth factor in LTE (Long Term Evolution) system. Background technique [0002] In a wireless communication system, due to the mobility of a mobile terminal in an idle state, it often moves between different cells. In this way, it is impossible for a mobile terminal to always use a fixed cell as its serving cell, that is, to move in an idle state. The process of terminal movement will involve the issue of cell reselection. At present, the cell reselection refers to a process in which a user reselects an adjacent cell with good service quality as a serving cell according to the service quality of the adjacent cell. In the prior art, the implementation scheme of corresponding cell reselection is as follows: [0003] In the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04B7/26H04W28/14H04W28/20H04W28/24H04W48/20
CPCH04W28/24H04W28/20H04W48/20H04W28/14
Inventor 于映辉陈燕燕
Owner HUAWEI TECH CO LTD
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