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Harq protocol optimization for packet data transmission

A retransmission protocol and data grouping technology, applied in digital transmission systems, transmission systems, using return channels for error prevention/detection, etc., can solve problems such as delays

Inactive Publication Date: 2007-10-10
PANASONIC CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, in the event that the Node B did not detect the first transmission, the data packet could only be correctly decoded after the third retransmission, resulting in a significant delay

Method used

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  • Harq protocol optimization for packet data transmission
  • Harq protocol optimization for packet data transmission
  • Harq protocol optimization for packet data transmission

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Embodiment Construction

[0136] The following paragraphs describe various embodiments of the invention. For example purposes, most of the implementations are outlined with respect to a UMTS communication system, and the terminology used in the following sections is mainly related to UMTS technology. However, the terminology used and the description with respect to the implementation of the UMTS architecture are not intended to limit the principles and concepts of the present invention to such a system.

[0137] Moreover, the detailed description given in the background section above is only intended to facilitate a better understanding of most of the UMTS-related example embodiments described below, and should not be construed as limiting the present invention to mobile communications The described implementation of the processes and functions in the network.

[0138] The concepts and principles outlined in the following sections can be applied to any HARQ protocol that uses incremental redundancy. ...

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Abstract

The invention relates to a HARQ method using incremental redundancy and providing synchronous retransmissions. Further, the invention relates to a receiving entity and a transmitting entity employing the HARQ method and to a mobile communication system. To optimize conventional HARQ retransmission protocols, the invention introduces a ternary feedback which allows requesting a self-decodable version of a data packet under certain conditions. Further, the ternary feedback is provided in a backward compatible manner using a combination of conventional HARQ feedback signaling and scheduling related control signaling.

Description

technical field [0001] The present invention relates to a HARQ method that uses incremental redundancy and provides synchronous retransmission. Further, the present invention relates to a receiving entity and a transmitting entity using a HARQ method, and a mobile communication system such as UMTS. Background technique [0002] W-CDMA (Wideband Code Division Multiple Access) is a radio interface for IMT-2000 (International Mobile Telecommunications), which is standardized for use as a third generation wireless mobile telecommunication system. It provides various services such as voice service and multimedia mobile communication service in a flexible and efficient manner. Standardization organizations in Japan, Europe, the United States, and other countries have jointly formed a project called the 3rd Generation Partnership Project (3GPP) to produce a common radio interface specification for W-CDMA. [0003] The standardized European version of IMT-2000 is commonly known as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/18H04W28/00H04W28/04
CPCH04L1/1671H04L1/1812
Inventor 乔基姆·洛尔德拉甘·佩特罗维克弗雷德里克·查彭蒂尔
Owner PANASONIC CORP
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