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multi component carrier ofdma communication system

一种分量载波、通信系统的技术，应用在多路复用通信、频分多路复用系统、正交多路复用系统等方向，能够解决链路适配能力差等问题，达到频率分集增益提高的效果

Inactive Publication Date: 2011-12-07
LENOVO INNOVATIONS LTD HONG KONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the link adaptation capability of this scheme is relatively poor, because only one type of modulation scheme can be applied for each transmission time interval (TTI) regardless of which component carrier the symbols from each transport block are mapped to. per transport block

Method used

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Examples

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Embodiment 1

[0083] (Further Exemplary Embodiment 1) An OFDMA communication system, wherein the downlink channel coding structure is enhanced, the system comprising:

[0084] means for partitioning the concatenated permuted plurality of transport blocks among the plurality of component carriers; and

[0085] Means for individually performing link adaptation for each component carrier based on channel conditions experienced by the component carrier.

[0086] (Further Exemplary Embodiment 2) The system of further exemplary embodiment 1, wherein the means for performing comprises means for adapting the modulation scheme for each component carrier.

[0087] (Further Exemplary Embodiment 3) The system according to further exemplary embodiment 1 or 2, wherein the performing means comprises means for adapting the number (rank) of transport streams per component carrier.

[0088] (Further Exemplary Embodiment 4) The system of any one of further exemplary embodiments 1 to 3, wherein the means for ...

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PUM

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Abstract

A method of enhancing a downlink channel coding structure in an OFDMA (orthogonal frequency division multiple access) communication system is provided. The method includes: segmenting a concatenation of multiple transport blocks amongst multiple component carriers; and separately performing link adaptation for each component carrier according to channel conditions experienced by that component carrier.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims priority from Australian Provisional Patent Application No. 2009900066 filed 9 January 2009, the entire contents of which are hereby incorporated by reference. technical field [0003] The present application relates generally to wireless communication systems, and, in particular, to multi-component carrier OFDMA (Orthogonal Frequency Division Multiple Access) communication systems. This application is particularly suited for use in the telecommunications standard currently being developed by the 3rd Generation Partnership Project (3GPP) known as Long Term Evolution (LTE)-Advanced, and describing the invention with respect to this exemplary, non-limiting application will is convenient. Background technique [0004] Advanced Evolution Mobile Broadband communication systems, such as those being developed following the 3GPP LTE-Advanced and IEEE 802.16m communication standards, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04J1/00H04J11/00
CPCH04L5/0007H04L5/003H04L1/0013H04L1/0003H04L5/0064H04L5/0037
Inventor 修俊彭・恩古亚吴文龙
Owner LENOVO INNOVATIONS LTD HONG KONG
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