Method for coordinating interference between cells
An interference coordination, inter-cell technology, applied in the direction of error prevention/detection, network planning, access restriction, etc. using the return channel, which can solve problems such as insufficient utilization of resources, differences in understanding of available resources, and insufficient utilization of cell resources.
Active Publication Date: 2013-06-26
北京万海云科技有限公司
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Therefore, in the case where the load indication message is not updated, there is no definition of when the load indication message will fail, resulting in a difference in the understanding of the current available resources between the two adjacent cells, resulting in the inability to fully utilize the resources
[0012] In short, the existing ICIC inevitably leads to insufficient utilization of cell resources
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[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0043] image 3 It is a signaling flowchart of the inter-cell interference coordination method in the embodiment of the present invention. In the figure, eNB1 and eNB2 are two base stations respectively controlling two adjacent cells of the same frequency. Such as image 3 As shown, the methods for eNB1 and eNB2 to perform interference coordination on the two adjacent cells include:
[0044] In step 301, eNB1 sends a load indication message to eNB2, and eNB2 performs interference coordination between cells according to the load indication message.
[0045] In this step, the load indication message indicates that the designated physical resource block PRB is in an alarm state, for example, the load indication message carries the uplink high inte...
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The invention discloses a method for coordinating interference between cells, which is suitable for controlling two base stations between two neighboring cells with the same frequency. The method comprises the following steps that: a first base station sends a load indicating message to a second base station, wherein the load indicating message indicates that appointed physical resource blocks PRB are in the warning state; a second base station coordinates the interference between the cells according to the load indicating message, and when the warning state of all or part of PRBs in the appointed PRBs is removed, the first base station sends a warning state removing indicating message to the second base station, wherein the warning state removing indicating message indicates that the warning state of all or part of PRBs in the appointed PRBs is removed; and after the second station receives the warning state removing indicating message, the interference between the cells is coordinated according to the warning state removing indicating message. Through the technical scheme of the invention, the condition that resources of the cells are not utilized fully can be prevented.
Description
technical field [0001] The invention relates to the technical field of mobile communication, in particular to an interference coordination method between cells. Background technique [0002] A Long Term Evolution (LTE, Long Term Evolution) system adopts a flat network structure. figure 1 It is the structure diagram of LTE network. like figure 1 As shown, the Evolved Universal Terrestrial Radio Access Network (E-UTRAN, Evolved Universal Terrestrial Radio Access Network) is composed of serving base stations (eNB, evolved NodeB), and the eNBs are interconnected by the X2 interface; the evolved packet core network (Evolved Packet Corenet work, EPC) includes a Serving Gateway (S-GW, Serving Gateway) and a Mobility Management Entity (MME, Mobility Management Entity), and interacts with the eNB through the S1 interface. The ICIC function is located in the eNB. [0003] In an LTE system based on Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Mult...
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IPC IPC(8): H04L1/18H04W16/14H04W48/08H04W48/10H04W72/04
Inventor 岳然赵训威姜怡华
Owner 北京万海云科技有限公司