Method for enhancing downlink control information for improving system spectral efficiency

A technology for controlling information and spectral efficiency, applied in wireless communication, electrical components, etc., can solve problems such as low efficiency and performance loss, and achieve the effect of increasing spectral efficiency, increasing throughput, and improving spectral efficiency

Active Publication Date: 2013-04-10
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These will result in a performance loss on the Physical Downlink Shared Control Channel (PDSCH) due to inefficient utilization of frequency selective gains

Method used

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  • Method for enhancing downlink control information for improving system spectral efficiency
  • Method for enhancing downlink control information for improving system spectral efficiency
  • Method for enhancing downlink control information for improving system spectral efficiency

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] figure 1 A flowchart of a method according to an embodiment of the present invention is shown. In method step S11, the user equipment sends channel state information to the base station, and the channel state information may include: channel quality indication, precoding matrix indication, precoding type indication, and / or rank indication, etc. In step S12, the base station performs scheduling and resource allocation to the user equipment according to the received channel state information. Step S12 includes: step S121 assigning resource blocks to the user equipment according to the channel state information; step S122 determining the channel condition of each allocated resource block of the user equipment. exist figure 1 In the illustrated embodiment, the wireless channel condition may include an equivalent signal to interference plus...

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Abstract

The invention relates to a method for enhancing downlink control information for improving the system spectral efficiency. The method comprises receiving channel state information from user equipment; allocating resource blocks to the user equipment according to the channel state information; determining channel conditions of each allocated resource block of the user equipment; dividing the resource blocks allocated to the user equipment into K resource block groups based on the determined channel conditions, wherein the resource blocks with similar wireless channel conditions are determined to be a resource block group; determining modulation and encoding schemes corresponding to each resource block group in the determined resource block groups; and sending downlink control information which comprises mapping information of the allocated resource blocks and the resource block groups and the determined modulation and encoding schemes. According to the method for enhancing downlink control information for improving the system spectral efficiency, frequency selection gains of the user equipment are fully used, the system spectral efficiency is improved, and the system handling capacity is further increased.

Description

technical field [0001] The present invention relates to a wireless communication system, and more specifically relates to a method for improving system spectral efficiency by enhancing downlink control information in a wireless communication system. Background technique [0002] A subsequent evolution system of the 3GPP Long Term Evolution (Long Term Evolution: LTE) technology supports frequency diversity scheduling (frequency diversity scheduling: FDS) and frequency selective scheduling (frequency selective scheduling: FSS). For frequency selective scheduling, the base station allocates resource blocks to the user equipment with the best channel quality according to the channel state information (Channel State Information: CSI) report. [0003] The channel state information report includes channel quality indicator (Channel Quality indicator: CQI), precoding matrix indicator (Precoding Matrix Indicator: PMI), precoding type indicator (Precoding type indicator: PTI), and / or ...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/12
Inventor 刘建国刘铮蒋琦杨红卫王栋耀沈钢
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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