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Radio communication device and system and communication timed regulating unit

一种无线通信装置、无线通信的技术，应用在无线通信、无线电传输系统、传输系统等方向，能够解决通信系统通信品质恶化等问题，达到抑制干扰的效果

Inactive Publication Date: 2005-10-05
OKI ELECTRIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when a plurality of wireless communication systems using different wireless communication methods are used at the same location, there is a problem that the communication quality of each communication system deteriorates due to interference between the communication systems.

Method used

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  • Radio communication device and system and communication timed regulating unit
  • Radio communication device and system and communication timed regulating unit
  • Radio communication device and system and communication timed regulating unit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0037] In this embodiment, interference from the wireless LAN system can be avoided by using the CTS signal used to avoid the above-mentioned hidden terminal problem in the wireless LAN.

[0038] FIG. 1 shows a configuration diagram of a wireless communication device according to the present embodiment. This wireless communication device is composed of a communication circuit 101 , a communication control circuit 102 , and a wireless LAN interference prevention control circuit 103 . Furthermore, mainly using the anti-jamming control circuit 103 of the wireless LAN, a first wireless communication method in which a reception station that receives the transmission request signal returns a reception preparation completion signal is configured. In addition, the communication circuit 101 and the communication control circuit 102 constitute a second wireless communication method in which data signals are transmitted and received in the same frequency band as the first wireless commun...

no. 2 approach

[0060] In this embodiment, interference from the wireless LAN system can be avoided by using the RTS / CTS signal used to avoid the hidden terminal problem in the wireless LAN.

[0061] FIG. 4 shows the form of a communication system according to a second embodiment of the present invention. As shown in FIG. 4 , the communication system of this embodiment consists of an RTS sending station that has the function of sending RTS in addition to the sending and receiving function of the communication system, a CTS sending station that has the function of sending CTS, a designated RTS sending station, and a CTS sending station. The management office of the sending station is composed of stations having only other functions of this communication system.

[0062] FIG. 5 shows a configuration diagram of an RTS sending station in this embodiment. The RTS sending station in the figure is composed of a communication circuit 201, a communication control circuit 202, an anti-wireless LAN int...

no. 3 approach

[0106] The communication system of the present embodiment is a communication system in which the RTS sending station and the CTS sending station autonomously select the RTS sending station and the CTS sending station by the management office in the communication system of the second embodiment.

[0107]FIG. 8 is a diagram showing the configuration of an RTS sending station according to a third embodiment of the present invention. The RTS sending station in the figure is composed of a communication circuit 501, a communication control circuit 502, an anti-wireless LAN interference control circuit 503, an RTS sending station designated signal processing circuit 504, a communication station distance measurement circuit 505, a CTS sending station selection circuit 506 and a CTS sending station Designated signal generating circuit 507 is constituted.

[0108] The communication circuit 501 is the same as the communication circuit 101 of the communication device of the first embodime...

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PUM

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Abstract

An object of this invention is to avoid interfering from a radio LAN transmission unit and being interfered. This invention relates a radio transmission unit for transmitting according to a second radio transmission system which transmits / receives data signal under the same frequency band as first radio transmission system in which prior to transmitting of the data signal, a transmitting station transmits a transmission request signal while a reception station receiving this RTS sends back a reception preparation completion signal. This radio transmission unit comprises CTS transmitting means for transmitting CTS according to the first radio transmission system and a duration setting circuit for setting a duration time to be overlaid on the CTS, and prior to transmitting according to the second radio transmission system, the duration time set by the duration setting circuit is overlaid on the reception preparation completion signal according to the first radio transmission system.

Description

technical field [0001] The present invention relates to a wireless communication device, a wireless communication system, and a communication timing mediation device having a control circuit for avoiding Interference from a first wireless communication system capable of avoiding the hidden terminal problem by transmitting a receive request to send signal (RTS) and a receive ready signal (CTS). Background technique [0002] The 2.4GHz frequency band is a bandwidth that allows unlicensed wireless communication, and various communication methods are now standardized and practical. For example, IEEE802.11 series wireless LAN, Bluetooth, and the like. Among them, wireless LAN is a very popular communication method, and the communication distance is relatively long, and the communication speed is also high-speed. [0003] In addition, in various wireless communication systems discussed in recent years, communication methods that save power are required. As an example of a metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04B1/00H04B1/04H04B7/00H04B7/24H04W16/14H04W72/54
CPCH04W74/00H04W16/14H04W28/04H04W84/12
Inventor 福井洁川本康贵
Owner OKI ELECTRIC IND CO LTD