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Method for reducing same frequency interferences

A technology of co-channel interference and interference level, applied in electrical components, wireless communication, network planning, etc., can solve the problem that co-channel interference cannot be effectively reduced, co-channel interference from adjacent cells is not considered, and co-channel interference from adjacent cells cannot be reduced. Interference and other issues to achieve the effect of increasing the possibility and reducing co-channel interference

Active Publication Date: 2013-01-16
TD TECH COMM TECH LTD
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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
In addition, when the system is running, the interference level of each UE in the system will change due to changes in the wireless environment. It can be seen that the existing method of reducing co-channel interference through resource allocation cannot effectively reduce the interference generated during system operation. co-channel interference

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  • Method for reducing same frequency interferences

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Embodiment Construction

[0013] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] In practical applications, there are some services that can reduce the service rate, such as background and interactive services (BE services), stream services, etc., and if the rate of these services of the UE is reduced, even if the resources of the UE and the resources of its adjacent UEs are at the same time If slots and carrier frequencies still overlap, the interference generated between adjacent UEs will also decrease; in addition, after the service speed is reduced, the required bandwidth will be reduced accordingly. The possibility of slot or carrier frequency resources will increase, which can effectively reduce the interference level of the UE.

[0015] Based on this, the main idea of ​​the present invention is: during t...

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Abstract

The invention discloses a method for reducing same frequency interferences, which comprises the following steps of: when UE1 enters a connection state, performing real-time monitoring on position information of the UE1 by RNC, and according to the position information, determining whether the UE1 has an adjacent UE in the connection state currently, if so, triggering a real-time measurement of the UE1 and the UE in the connection state and reporting the current interference level related parameters; when at least one UE in the UE1 and the UE in the connection state meets a preset condition, judging whether a speed reducible service exists in services of all the UE meeting the preset condition by the RNC, if so, selecting more than one speed reducible service to reduce the service rate, wherein the preset condition is that the interference level related parameters reported by the UE are greater a preset threshold value during a preset time; and according to the reduced service rate, performing resource adjustment on the UE corresponding to the service with the reduced service rate. The method can effectively reduce the same frequency interferences in system operation.

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...

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Application Information

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