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Wireless communication system, base station, relay station and wireless communication method

A wireless communication system, wireless communication technology, applied in the field of wireless communication systems

Active Publication Date: 2016-04-20
FUJITSU CONNECTED TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at this moment, the base station does not recognize the sender's device of Msg1

Method used

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  • Wireless communication system, base station, relay station and wireless communication method
  • Wireless communication system, base station, relay station and wireless communication method
  • Wireless communication system, base station, relay station and wireless communication method

Examples

Experimental program
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no. 1 Embodiment approach

[0060] figure 1 It is a diagram showing the radio communication system of the first embodiment. The wireless communication system according to the first embodiment includes a base station 10 , a relay station 20 and a mobile station 30 . It is assumed that the mobile station 30 is, for example, a mobile phone or a portable information terminal device. The relay station 20 may be a mobile wireless relay station or a fixed wireless relay station. The mobile station 30 performs wireless communication with the base station 10 or the relay station 20 . The relay station 20 can perform random access (RA) to the base station 10 to establish a connection, and can relay data communication between the base station 10 and the mobile station 30 .

[0061] The base station 10 has a wireless communication unit 11 and a control unit 12 . The wireless communication unit 11 receives the first message (message #1) related to random access, and transmits the second message (message #2) relat...

no. 2 Embodiment approach

[0069] figure 2 It is a figure showing the wireless communication system of 2nd Embodiment. The wireless communication system of the second embodiment includes a base station 100, relay stations 200, 200a, and mobile stations 300, 300a. In the following description, it is mainly assumed that the mobile station 300 performs data communication with the base station 100 via the relay station 200 and the mobile station 300a directly performs data communication with the base station 100 .

[0070] The base station 100 is a wireless communication device that performs wireless communication with the relay stations 200 and 200a and the mobile station 300a. The base station 100 is wired to an upper station (not shown). The base station 100 receives data from an upper station, and transmits it to the relay stations 200, 200a and the mobile station 300a through a downlink (DL). In addition, data is received from the relay stations 200 and 200a and the mobile station 300a through an u...

no. 3 Embodiment approach

[0159] Next, a third embodiment will be described. The description will focus on the differences from the second embodiment, and the description of the same matters will be omitted. In the third embodiment, the method of determining whether the sender of Msg1 is a relay station or a mobile station is different from that in the second embodiment.

[0160] The wireless communication system according to the third embodiment can communicate with figure 2 It is realized with the same device configuration as the second embodiment shown. In addition, the base station, relay station, and mobile station according to the third embodiment can communicate with Figure 6-8 The same block configuration as the second embodiment shown is realized. Use the following with Figure 6-8 The same reference numerals describe the third embodiment.

[0161] Figure 13 It is a flowchart showing base station processing in the third embodiment. numbered pairs along the steps Figure 13 The proce...

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PUM

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Abstract

The invention provides a wireless communication system, a base station, a relay station and a wireless communication method, and aims to successfully execute random access of the relay station. A relay station (20) is wirelessly communicated with a base station (10); a mobile station (30) is wirelessly communicated with the base station (10) or the relay station (20); the relay station (20) is prevented from receiving a wireless signal from the base station (10) while transmitting the wireless signal to the mobile station (30); the relay station (20) transmits a message (#1) relevant to random access to the base station (10); the base station (10) sends a message (#2) according to timing determined according to whether a sending party of the message (#1) is the relay station (20) or not; and the relay station (20) receives the message (#2) from the base station (10).

Description

[0001] This application is a divisional case of an invention patent application with application number 201080068575.7 (international application number: PCT / JP2010 / 063748, filing date: August 13, 2010, invention name: wireless communication system, base station, relay station, and wireless communication method) Apply. technical field [0002] The invention relates to a wireless communication system, a base station, a relay station and a wireless communication method. Background technique [0003] Currently, wireless mobile communication systems such as mobile phone systems and wireless MAN (Metropolitan Area Network: Metropolitan Area Network) are widely used. In addition, in order to further increase the speed and capacity of wireless communication, discussions on next-generation mobile communication technology are being actively and continuously conducted. For example, in 3GPP (3rd Generation Partnership Project: Third Generation Partnership Project), one of the internat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/155H04W72/04H04W74/00
CPCH04B7/15528H04B7/15564H04W72/0446H04W74/002H04W88/04
Inventor 太田好明河崎义博大渕一央田岛喜晴田中良纪
Owner FUJITSU CONNECTED TECH LTD
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