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Method, system and user equipment for realizing coordinated multiple point (CoMP) transmission

A multi-point cooperation and neighboring cell technology, applied in the field of wireless communication, can solve problems such as multi-resource and system consumption, save system resources and improve average spectrum utilization.

Active Publication Date: 2010-09-15
江苏盛维工业科技有限公司
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Problems solved by technology

However, these methods all require the UE to add new feedback content based on the feedback content defined in Rel. At the same time, it is necessary for the X2 interface to provide the smallest possible transmission delay to ensure its effectiveness, resulting in the current controversy over the effectiveness of various feedback methods

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  • Method, system and user equipment for realizing coordinated multiple point (CoMP) transmission

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Embodiment Construction

[0032] The basic idea of ​​the present invention is: the adjacent cell eNB transmits the RQI-RS that provides the beamforming matrix adopted by itself; the UE obtains the optimal PMI according to the beamforming matrix adopted by the adjacent cell eNB provided by the RQI-RS; the UE obtains the airspace ICIC The CQI, and the obtained optimal PMI and CQI are fed back to the serving cell eNB; the serving cell eNB refers to the CQI value of the UE airspace ICIC for scheduling, and uses the optimal PMI to send the optimally precoded signal to the UE.

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The present invention realizes the method for coordinated multi-point transmission, such as figure 1 As shown, the method includes the following steps:

[0035] Step 101: The eNB of the adjacent cell transmits the RQI-RS provided by the beamforming matrix adopted by itself;

[0036] S...

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Abstract

The invention discloses a method for realizing coordinated multiple point (CoMP) transmission. The method comprises that: a neighboring cell evolved node B (eNB) transmits a downlink precoding reference signal (RQI-RS) providing a beam-forming matrix adopted per se; user equipment (UE) obtains an optimal precoding matrix index (PMI) according to the beam-forming matrix provided by the RQI-RS and adopted by the neighboring cell eNB; the UE obtains a channel quality indicator (CQI) of spatial domain inter-cell interference coordination (ICIC), and feeds the optimal PMI and the CQI back to a service cell eNB; and the service cell eNB performs scheduling according to a CQI value of the spatial domain ICIC of the UE and sends an potimal precoded signal to the UE by using the optimal PMI. The invention also discloses a system and the UE for realizing the CoMP transmission. Through the scheme of the invention, the CoMP of the spatial domain ICIC of the UE can be realized.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a method, system and mobile terminal for realizing coordinated multi-point transmission. Background technique [0002] In wireless communication, the most successful application of cooperative communication is coordinated multi-point transmission (CoMP), which is the most important enhanced transmission technology of the enhanced long-term evolution system (LTE-A, LTE Advance). Efficient way to average throughput. In a mobile communication system, since the mobile terminal (UE) at the cell edge is in an interference-limited environment, methods such as fractional frequency reuse (FFR) are generally used to suppress inter-cell interference (ICI, Inter-Cell Interference), which will reduce the The average throughput rate for the region. In order to meet the requirements of International Mobile Telecommunications-Advanced (IMT-A, International Mobile Telecommunications-...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04W28/06
Inventor 张峻峰魏宁张忠培
Owner 江苏盛维工业科技有限公司
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