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Method for compressing soft values

A soft value, compression rate technology, applied in the field of computer program products, can solve problems such as low user data rate and reduced transmission block quality, and achieve the effect of improving throughput and link performance.

Inactive Publication Date: 2014-08-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the quality of stored soft values ​​for transport blocks degrades, resulting in lower user data rates

Method used

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  • Method for compressing soft values
  • Method for compressing soft values
  • Method for compressing soft values

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Embodiment Construction

[0020] To achieve the above and other objects, the present invention relates to a method in a receiver and to a receiver device for compressing soft values. The receiver includes at least one HARQ buffer for storing bit representations of soft values. The bit representation is used for HARQ retransmission combining in a wireless communication system.

[0021] The method comprises the step of adaptively compressing the soft values ​​by using a variable compression rate c by which the device corresponds to compressing the soft values. Therefore, the HARQ buffer can be utilized in a more efficient manner to improve receiver performance without additional memory cost.

[0022] According to an embodiment of the present invention, stored transport blocks are not compressed with few retransmissions, thereby increasing receiver performance and user throughput. In cases with many retransmissions, the stored transport blocks are compressed to reduce memory requirements defined by the ...

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Abstract

The present invention relates to a method in a receiver for compressing soft values; said receiver comprising at least one HARQ buffer for storing bit representations of soft values used for HARQ retransmission combining in a wireless communication system; said method comprising the step of: adaptively compressing soft values by using a variable compression rate c. Furthermore, the invention also relates to a receiver device, a computer program, and a computer program product thereof.

Description

technical field [0001] The invention relates to a method of compressing soft values ​​in a receiver. Furthermore, the invention relates to a receiver device, a computer program and a computer program product. Background technique [0002] HARQ (Hybrid ARQ) with soft combining technique is widely used in many contemporary digital communication systems like EGPRS, UMTS, LTE and CDMA2000. [0003] HARQ with soft combining greatly improves spectral efficiency and user data throughput. The general idea of ​​HARQ with soft combining is to use the energy in all transmissions in the same transport block. Thus, erroneously received transport blocks are stored in a so-called HARQ buffer, and when a retransmitted block is received, the two blocks are soft-combined. Soft merges can be Chase merges, incremental redundancy, or a combination of both. [0004] In Chase Merging, the same encoded bits are retransmitted and merged. Each retransmission adds extra energy, ie, increased Eb / N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1845
Inventor 雅各布·辛格沃
Owner HUAWEI TECH CO LTD