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Wireless communication system and data transmission method used in same

A technology of a wireless communication system and a data transmission method, applied in the fields of data transmission and wireless communication systems, can solve problems such as waste of resources

Inactive Publication Date: 2010-09-01
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the channel condition from the relay station to the base station is usually much better than the channel condition from the mobile station to the base station, using the same coding and modulation method will bring a certain waste of resources

Method used

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  • Wireless communication system and data transmission method used in same
  • Wireless communication system and data transmission method used in same
  • Wireless communication system and data transmission method used in same

Examples

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Embodiment Construction

[0027] image 3 A schematic diagram showing transparent relay data transmission in a wireless communication system according to an embodiment of the present invention. Such as image 3 As shown, the wireless communication system 300 includes a base station (BS) 310 , a relay station (RS) 320 and a mobile station (MS) 330 . The relay station 320 is transparent to the mobile station 330 . When transmitting data for the first time (eg, in the first time slot), the mobile station 330 sends upstream a first signal generated by encoding and modulating the data to be sent. The base station 310 receives the first signal from the mobile station 330 and decodes the received first signal. When the base station 310 determines that the data needs to be retransmitted, the base station 310 sends a response NACK or a retransmission request to the relay station 320 for indicating incorrect decoding. In other words, a response NACK or a retransmission request for indicating incorrect decodi...

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Abstract

The invention provides a wireless communication system and a data transmission method used in same. The wireless communication system comprises a base station, a mobile station and a relay station transparent to the relay station. The method comprises the following steps: the base station receives a first signal transmitted from the mobile station, decodes the first signal, and transmits response for indicating that the decoding is incorrect to the relay station when the decoding result is incorrect, but not transmits the response for indicating that the decoding is incorrect to the mobile station.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a wireless communication system and a data transmission method therein. Background technique [0002] With the rapid development of wireless multimedia services, users have higher and higher requirements on data communication capabilities and transmission quality. However, due to the influence of obstacles, shadows and other factors in the complex wireless environment, many communication dead spots are formed. These will make it difficult for users to obtain continuous high-speed and high-quality communication services. In order to solve this problem, the wireless system uses relay equipment to forward the wireless communication signals between the wireless communication parties to improve the system throughput and user data rate. [0003] According to whether the mobile station knows the existence of the relay, the relay can be divided into transparent relay and non-trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/04H04L1/00
CPCH04W84/047H04L1/1829H04B7/2606H04L1/1692H04L2001/0097H04L1/1607
Inventor 张元涛王键周华田军
Owner FUJITSU LTD