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Method and apparatus for blind decoding

A blind decoding and encoding rate technology, applied in the field of signal processing, can solve the problems of damaging the battery life of mobile stations, high cost, and large possibility of message format

Inactive Publication Date: 2011-02-09
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, the totality of message format possibilities is still very large, even limiting the aggregate of CCEs that can be used
This search burden can be computationally expensive, to the point where it impairs the battery life of the mobile station, or even to the point where the mobile station barely has the processing speed necessary to cover the search space in the time allowed

Method used

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  • Method and apparatus for blind decoding
  • Method and apparatus for blind decoding

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Embodiment Construction

[0017] figure 2 A simplified illustration of an embodiment of the wireless communication network 10 is presented in which the base station 12 transmits downlink signals to a plurality of mobile stations 14 (e.g., mobile stations 14-1 to 14-n). Those skilled in the art will recognize that the network 10 generally includes multiple base stations, which individually or cooperatively support a potentially numerous mobile stations, and will also recognize that the actual number of mobile stations supported by the illustrated base station 12 may be dynamic. The number of changes. Moreover, in at least one embodiment, the network 10 is configured according to the LTE / E-UTRA standard as published by 3GPP, and the base station 12 (e.g., enhanced NodeB) and the mobile station 16 are also configured for LTE operation. However, the teachings presented herein have advantageous applicability beyond LTE-based implementations.

[0018] The methods and devices taught herein broadly provide for e...

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Abstract

According to the teachings presented herein, a method and apparatus provide a reduced search space for blindly decoding a message included in a signal received at a communication receiver, where the message has an unknown format. Improving blind detection efficiency in this manner offers numerous advantages, including but not limited to lower power consumption through reduced processing overhead, and lower power consumption through expanded sleep opportunities. As a non-limiting example, the communication receiver comprises a mobile station configured for operation according to Long Term Evolution (LTE) standards, as promulgated by the 3GPP for E-UTRA systems, where the mobile station is configured to reduce a search space of DCI message decoding by determining message format likelihoods and blindly decoding a received DCI message based on the message format likelihoods.

Description

Technical field [0001] The present invention mainly relates to signal processing, and more specifically to blind decoding of messages in received signals. Background technique [0002] The evolving universal terrestrial radio access network (E-UTRA) standard under development, as published by the 3rd Generation Partnership Project (3GPP), envisages sending downlink control information (DCI) to the target according to a changing message format Mobile station. Because the amount and type of information conveyed in a given message of these downlink messages depends on the message content specialized for the target mobile station, the message format (for example, size, coding, and / or subframe positioning) can vary from message to The news changes. Example details for possible DCI message formats are given in section 5.5.3 of 3GPP TS 36.212 V8.2.0 (2008-03). [0003] The technical specification explains that each DCI message transmits an uplink power control command or downlink or up...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04L1/0091H04L1/0038Y02B60/50H04L1/0046
Inventor B·林多夫M·卡姆夫F·诺德斯特伦
Owner TELEFON AB LM ERICSSON (PUBL)
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