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Interference coordination method and system

A technology for interference coordination and dispatching information, applied in power management, wireless communication, electrical components, etc., can solve the problems that the interference coordination method is not well applicable, the actual effect is not ideal, and the interference coordination function cannot be started in time, etc., to achieve expansion Application range, effect of interference coordination

Active Publication Date: 2011-04-20
POTEVIO INFORMATION TECH
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Problems solved by technology

[0009] However, the above-mentioned interference coordination method is mainly used in the LTE system. For the LTE-A system, due to the improvement of the system structure and performance, the above-mentioned interference coordination method cannot be well applied. Moreover, the above-mentioned interference coordination method itself also has certain limitations. Defects, for example, for the above method of using OI / HII messages to control, there will be a delay of 20ms when the OI message is transmitted on the X2 interface, so the interference coordination function cannot be started in time, and the interference will be triggered after this event occurs Coordinated approach, which is not effective because it cannot solve the problem before the event occurs

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Embodiment Construction

[0083] Aiming at the problems existing in the prior art, a new interference coordination scheme is proposed in the present invention.

[0084] In the existing LTE system, the PDCCH can be used to transmit basic control information to the UE, such as scheduling information or authorization information. After introducing the relay in the LTE-A system, it is hoped that the PDCCH can be further used to allocate resources for the relay. There will be some problems in this way: in the LTE-A system, the base station will send scheduling information to the macro UE, and the relay will also send scheduling information to the R-UE, and the relay cannot receive in the sending state. , so, if the relay is in the sending state when the base station sends information to the relay, the relay cannot correctly receive the information from the base station. Specifically, for a relay, whether it can receive the PDCCH from the base station depends on the transmission scheme of the backhaul link, ...

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Abstract

The invention discloses an interference coordination method, which comprises that: user equipment (UE) feeds interference user equipment (I-UE) which is a relay back to a base station; the base station increases the scheduling information of the I-UE in a relay physical downlink control channel (R-PDCCH) aiming at the relay, and transmits the R-PDCCH to the relay; and the relay allocates time-frequency resources orthogonal to time-frequency resources used by the I-UE on an access link of the relay according to the received scheduling information so as to realize interference coordination. Meanwhile, the invention discloses an interference coordination system. The method and the system can better realize interference coordination in a long-term evolution-advanced (LTE-A) system.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to an interference coordination method and system. Background technique [0002] A new type of relay cellular communication system, such as the Advanced Long Term Evolution (LTE-A) system, introduces a Type I (Type I) relay, which will bring greater coverage and coverage to the LTE-A system. Higher system capacity, but at the same time, the introduction of the relay will also bring various interferences, such as inter-sector multi-user interference, cell center and cell edge multi-user interference, and interference between cooperative relays. [0003] Such as figure 1 as shown, figure 1 It is a schematic diagram of the composition and structure of the existing LTE-A system. Wherein, a terminal (UE) directly served by a base station (eNB) is called a macro UE, and a UE directly served by a relay (RN) is called an R-UE. When the macro UE is close to the edge of the relay coverag...

Claims

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Application Information

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IPC IPC(8): H04W52/30H04W72/12
Inventor 张莉莉潘瑜路杨高伟东
Owner POTEVIO INFORMATION TECH
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