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Method for data transmitting in radio system and radio system

A wireless system and sending technology, applied in the field of wireless transmitters, wireless receivers, and wireless systems, to achieve the effect of saving wireless resources and accurate code rate

Inactive Publication Date: 2003-12-17
СИСВЕЛ ИНТЕРНЭШНЛ С.А.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drawback of this approach is that, even under ideal channel conditions, the transmission of at least D data blocks is required before a data block can be decoded, i.e., the code rate is at most equal to 1

Method used

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  • Method for data transmitting in radio system and radio system
  • Method for data transmitting in radio system and radio system
  • Method for data transmitting in radio system and radio system

Examples

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Embodiment Construction

[0030] Referring to Fig. 1A, the general structure of the wireless system of the present invention and its connection to the fixed telephone network and the packet transmission network will be described below. Fig. 1A contains only components essential to the present invention, but it is obvious to those skilled in the art that a conventional packet cellular radio network also includes other operations and structures that do not need to be described in detail here. The present invention is most applicable to EGPRS. The invention can be used for both uplink and downlink.

[0031]A cellular wireless network generally includes a fixed telephone infrastructure, that is, a network part, and a user terminal 150, which may be fixed, installed in a vehicle or in a handheld terminal device. The network part comprises base stations 100 . A plurality of base stations 100 are collectively controlled by a base station controller 102 in communication therewith. The base station 100 inclu...

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Abstract

The invention relates to a method of transmitting data in a radio system from a transmitter to a receiver, and to a radio system using the method, a radio transmitter and a radio receiver. A transmitter (260) comprises a channel coder (202) for channel coding a data block into a coded data block by using a selected channel coding and for puncturing the coded data block by using a first puncturing pattern, and transmission means (204) for transmitting the coded data block punctured by the first puncturing pattern to a receiver (264). The receiver (264) comprises a channel decoder (218) for decoding the received coded data block, means (224) for detecting a need for retransmission of the received coded data block, and means (204) for transmitting a retransmission request of the coded data block to the transmitter (260). The channel coder (202) increases the code rate of the coded data block to be retransmitted by puncturing the coded data block coded by the channel coding of the original transmission by using a second puncturing pattern comprising fewer symbols to be transmitted than the first puncturing pattern. The transmission means (204) transmit the coded data block punctured by the second puncturing pattern to the receiver (264). The receiver (264) comprises means (222) for combining a received coded data block (216) punctured by the first puncturing pattern and a received coded data block (220) punctured by the second puncturing pattern. The channel decoder (218) decodes the channel coding of the combined coded data block.

Description

technical field [0001] The present invention relates to a method of transmitting data from a transmitter to a receiver in a wireless system, a wireless system using the method, a wireless transmitter and a wireless receiver. The use of this method is described in EGPRS (Enhanced General Packet Radio Service). Background technique [0002] EGPRS (Enhanced General Packet Radio Service) is based on the GSM (Global System for Mobile Communications) system with packet-switched transmission. EGPRS adopts EDGE (Enhanced Data Rates for GSM Evolution) technology to increase data transmission capacity. In addition to the GMSK (Gaussian Minimum Shift Keying) modulation commonly used in GSM, the packet data channel can also use 8-PSK (8-Phase Shift Keying) modulation. Its purpose is mainly to enable non-real-time data transmission services, such as file copying and the use of Internet browsers, but is also used for real-time services, such as packet switching for transmitting voice an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/00H04L1/18
CPCH04L1/1819H04L1/0069H04L1/1845
Inventor 朱赛·思博拉
Owner СИСВЕЛ ИНТЕРНЭШНЛ С.А.
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