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Method for reducing link self-adaptation feedback information amount, wireless telecommunication equipment and wireless telecommunication system

A wireless communication device and link self-adaptive technology, applied in diversity/multi-antenna systems, transmission systems, digital transmission systems, etc., can solve the problem of large amount of MCS index feedback information, and achieve the effect of reducing the amount of information feedback

Inactive Publication Date: 2014-01-29
YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] However, in the case of multiple MCSs, MCS feedback needs to be performed separately for each data stream weighted by precoding, so the amount of feedback information of the MCS index of all data streams is still large

Method used

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  • Method for reducing link self-adaptation feedback information amount, wireless telecommunication equipment and wireless telecommunication system
  • Method for reducing link self-adaptation feedback information amount, wireless telecommunication equipment and wireless telecommunication system
  • Method for reducing link self-adaptation feedback information amount, wireless telecommunication equipment and wireless telecommunication system

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Embodiment Construction

[0033] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0034] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0035] 1. Program overview

[0036] In a MIMO system with Tx transmit antennas, the downlink uses W 1 W 2 The double codebook structure, if the effective rank number rank=n, and the codebook matri...

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Abstract

The invention provides a method for the reducing link self-adaptation feedback information amount. According to the method, the total throughput amount under all situations is computed through the hypothesis on the number of orders and traversal of MCS combination; in all total throughput amount corresponding to selected pre-encoding matrix combination, a sending party tells the pre-encoding matrix combination corresponding to the largest total throughput amount and the MCS combination to a receiving party. The invention further provides corresponding wireless telecommunication equipment and a wireless telecommunication system. According to the technical scheme, the total information feedback amount in an MIMO system can be reduced greatly.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for reducing the amount of link adaptive feedback information, a wireless communication device and a wireless communication system. Background technique [0002] In 3GPP Rel-10, the MIMO system with 8 transmit antennas has a dual codebook structure W 1 W 2 in, for W 1 Support beam grouping technology; and through W 1 Beam grouping, W 2 available from W 1 optimized beam grouping, thereby reducing W 2 The amount of PMI feedback information. [0003] However, in the case of multiple MCSs, MCS feedback needs to be performed separately for each data stream weighted by precoding, so the amount of feedback information of the MCS indexes of all data streams is still large. For example, after the introduction of 256QAM, considering 8 kinds of channel coding rates, there are 32 kinds of MCS in total, that is, it is necessary to feed back 5-bit MCS ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L1/00
Inventor 不公告发明人
Owner YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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