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Method for reducing same frequency interferences

A technology of same-frequency interference and interference level, applied in electrical components, wireless communication, network planning, etc., can solve the problems of not considering the same-frequency interference from adjacent cells, and cannot reduce the same-frequency interference from adjacent cells, so as to reduce the same-frequency interference effect

Active Publication Date: 2010-11-03
TD TECH COMM TECH LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, since the existing resource allocation method does not consider the same-channel interference from neighboring cells when performing resource allocation, it cannot reduce the same-channel interference from neighboring cells

Method used

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Embodiment 1

[0030] figure 1 It is a flowchart of Embodiment 1 of the present invention, such as figure 1 As shown, Embodiment 1 of the present invention mainly includes:

[0031] Step 101, when UE1 applies for resources from the system, the RNC judges whether there is an adjacent user equipment in the connected state in the adjacent cell of UE1 according to the current location information of UE1, if yes, execute step 103, otherwise, execute step 102 ;

[0032] Here, UE1's application for resources to the system not only refers to the scene where the UE newly accesses the network, but also includes service establishment (or modification, release), handover, and any physical resource adjustment scene.

[0033] In this step, when UE1 applies for resources from the system, if UE1 has a neighboring UE in the connected state in its neighboring cell, it is necessary to consider avoiding the same situation as possible with the neighboring UE during the resource allocation process in the subseq...

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Abstract

The invention discloses a method for reducing same frequency interferences, which comprises the following steps of: a, when UE1 applies for a resource from a system, judging whether UE in a connection state exists in a cell adjacent to the UE1 by RNC according to the current position information of the UE1, if so, performing the step b, otherwise, performing the step d; b, according to position information of the UE1 and the adjacent UE, judging whether wave beam superposition exists between a wireless wave beam from a service cell of the UE1 to the UE1 and a wireless wave beam from a servicecell of any adjacent UE to the UE, if so, performing the step c, otherwise, performing the step d; c, according to a carrier frequency / time slot dissimilarity principle of the adjacent UE, allocatinga resource occupying a time slot or frequency different from that of the adjacent UE to the UE1 by the RNC, and if the allocation is failed, performing the step d, otherwise, finishing the method; and d, according to the current resource allocation method, allocating a resource to the UE1 in the service cell of the UE1. The method can reduce the same frequency interferences from a cell and a neighboring cell.

Description

technical field [0001] The invention relates to a technique for reducing interference in a mobile communication system, in particular to a method for reducing co-channel interference. Background technique [0002] In a TD-SCDMA system, if multiple UEs with overlapping beams are allocated on the same carrier frequency / time slot, co-channel interference will occur. Co-channel interference is one of the most important sources of interference. The same-frequency interference may come from the own cell or from neighboring cells, and the same-frequency interference from neighboring cells is more significant. [0003] At present, the existing resource allocation method can avoid co-channel interference from the cell. In this method, the radio network controller (RNC) will combine the location information of each UE, such as the angle of arrival (AOA) information, according to the newly applied resource The service bandwidth of the UE needs to allocate resources to it. If other UE...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W36/20H04W72/12
Inventor 胡小新
Owner TD TECH COMM TECH LTD
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