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Relay device, communication system, and communication method

A relay device and communication system technology, which is applied in wireless communication, network traffic/resource management, access restriction, etc., can solve problems such as frequency utilization efficiency degradation, and achieve the effect of improving frequency utilization efficiency

Inactive Publication Date: 2010-12-29
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An increase in the amount of information of the CQI to be notified leads to a deterioration in frequency utilization efficiency

Method used

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  • Relay device, communication system, and communication method
  • Relay device, communication system, and communication method
  • Relay device, communication system, and communication method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0058] figure 1 It is a figure showing the usage status of resources. like figure 1 As shown, when the amount of CQI information is reduced, the reduced resources can be used for resources for information data communication, and the frequency utilization efficiency can be improved compared to conventional ones.

[0059] figure 2 It is a block diagram showing a schematic configuration of a mobile station device according to this embodiment. like figure 2 As shown, the mobile station apparatus 200 includes an encoding unit 201, a mapping unit 202, a multiplexing unit 203, a CQI generating unit 204, a radio transmitting unit 205, an antenna 206, a radio receiving unit 207, a separating unit 208, a channel estimating unit 209, a channel Compensation section 210 , demapping section 211 and decoding section 212 . The information data of the mobile station apparatus 200 is input to the encoding unit 201 . The encoding unit 201 performs error correction encoding and outputs ...

no. 2 Embodiment approach

[0080] In this embodiment, the relay device reduces the CQI information of the CQI of at least one mobile station device that notified the CQI to the relay device, and notifies the base station device of CQI with a smaller amount of information. Similar to the first embodiment, the mobile station apparatus adopts figure 2 structure shown. That is, the mobile station apparatus 200 includes an encoding unit 201, a mapping unit 202, a multiplexing unit 203, a CQI generating unit 204, a radio transmitting unit 205, an antenna 206, a radio receiving unit 207, a separation unit 208, a channel estimation unit 209, and a channel compensation unit. 210, the demapping unit 211, and the decoding unit 212 function in the same manner as in the first embodiment.

[0081] In addition, the relay device adopts the same as the first embodiment Figure 4 structure shown. That is, the relay device 400 includes an antenna 401 (for transmission and reception), a radio reception unit 402 , a sep...

no. 3 Embodiment approach

[0089]In this embodiment, the relay device receives CQIs of a plurality of mobile station devices, reduces the CQI information of the plurality of mobile station devices, and notifies the base station device of CQIs with a smaller amount of information. The mobile station apparatus has the same configuration as the first embodiment figure 2 structure shown. That is, the mobile station apparatus 200 includes an encoding unit 201, a mapping unit 202, a multiplexing unit 203, a CQI generating unit 204, a radio transmitting unit 205, an antenna 206, a radio receiving unit 207, a separation unit 208, a channel estimation unit 209, and a channel compensation unit. 210 , a demapping unit 211 and a decoding unit 212 . In the third embodiment, only the configuration of the CQI generation unit 204 is different from the first embodiment.

[0090] Figure 12 It is a diagram showing a schematic configuration of the CQI generation unit 204 of the mobile station apparatus according to th...

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Abstract

A relay device compresses an information amount of channel quality information reported from a plurality of terminal devices and reports the information amount to a control station device, thereby improving the frequency use efficiency. The relay device (400) is applied to a communication system in which a control station device and a terminal device performs a radio communication by using a plurality of sub-channels, so as to relay the communication between the control station device and the terminal device. The reception unit (402) receives channel quality information indicating the reception quality of the sub-channel from the terminal device; a compression unit (405) which compresses the information amount of the received channel quality information and generates report information to be reported to the control station device; and a transmission unit (406) which transmits the generated report information to the control station device.

Description

technical field [0001] The present invention relates to a relay device, a communication system, and a communication method for relaying wireless communication between a control station device and a terminal device. Background technique [0002] In next-generation mobile communications, it is expected to increase the carrier frequency along with the widening of the frequency band used. Since the increase of the carrier frequency will increase the propagation loss of radio waves, the range of the cell is reduced. In order to obtain the same coverage as in the past, it is necessary to add base station devices, but the cost increases. Therefore, a system in which a relay device is provided between a base station device and a mobile station device has been studied. Since the mobile station device does not need to communicate with a remote base station device but only needs to communicate with a relay device, it is possible to significantly reduce transmission power. [0003] N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/10H04W28/06
CPCH04W88/04H04W28/06H04W48/08
Inventor 中村理小野寺毅野上智造中野博史
Owner SHARP KK