Method for coordinating interference between districts of relay wireless communication network

An inter-cell interference and non-interference technology, which is applied in wireless communication, connection management, power management, etc., can solve problems such as reduced scheduling flexibility and spectrum utilization rate, and achieves increased transmission power, refined cell coverage area, and improved Effect of UT Average Throughput

Inactive Publication Date: 2009-07-29
ZTE CORP
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an inter-cell interference coordination method of a relay wireless communication network, which effectively solves the problem of spectrum utilization rate decline during partial power control and path loss compensation in the prior art and flexible scheduling when the load is heavy Sexual decline and other issues

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  • Method for coordinating interference between districts of relay wireless communication network
  • Method for coordinating interference between districts of relay wireless communication network
  • Method for coordinating interference between districts of relay wireless communication network

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Embodiment Construction

[0052] Below in conjunction with accompanying drawing and embodiment the present invention will be described in further detail:

[0053] The present invention provides a method for determining the interference source of adjacent cells by selecting a threshold value of the signal strength of the interference source, and limits the interference of adjacent cells within a certain range to effectively solve the problem of excessive system overhead and round-trip delay during inter-cell interference coordination. It is difficult to ensure the orthogonality of the time-frequency resources occupied by the interference source when it is too long and the load is heavy or full. This method consists of two parts:

[0054] Selection of restricted interference sources by BS;

[0055] Selection of restricted interference sources by RS.

[0056] In the step , the method for the BS to select a limited interference source is:

[0057] First, the BS determines a restricted interferer select...

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Abstract

The invention discloses an inter-cell interference coordination method in relay radio communication network. wherein, the interference coordination method for base station in network comprises: A, base station selecting limited interference source; B, dividing the base station into non-interference area, transition area and limited interference source area; and seting the link loss compensation factor and time frequency resource of every layer of the base station; D, setting a first interference signal intensity contrast threshold; E, measuring the intensity of current most intensive interference signal, if the intensity is larger than the first interference signal intensity contrast threshold, notifying the current user terminal to restart the random accessing process; otherwise, the base station adjusting the emission power of relay station and user terminal in current service. The invention limits the interference to cell in a certain range, and effectively solves the problems of excessive system cost, excessive reciprocating time delay, heavy load and difficulty in guaranteeing the orthogonal of time frequency resource occupied by the interference source in full load during the inter-cell interference coordination.

Description

technical field [0001] The present invention relates to a wireless communication network, in particular to a method for inter-cell interference coordination of a wireless communication network with RS (Relay Station, relay station). Background technique [0002] In the next-generation broadband wireless communication network, solving inter-cell interference in the wireless communication network becomes a key factor for improving UT (User Terminal) throughput and average UT throughput in the cell. In a relay network with RS, it will also face severe challenges to effectively solve the inter-cell interference between BS (base station), RS and its attached UT, and BS, RS and its UT in neighboring cells. [0003] In the relay network, since the RS can be used as a special UT of the subordinate BS, and at the same time, the RS itself can be the same as the RS. After the subordinate BS obtains time-frequency resources, the UT is allowed to access, forming an RS-centered RS coverag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/14H04W72/04H04W76/00
Inventor 魏巍
Owner ZTE CORP
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