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Local search processing method and radio communicator

A wireless communication device and communication device technology, applied in wireless communication, wireless communication service, communication between multiple stations, etc., can solve problems such as increased power consumption, increased power consumption, and inability to connect, so as to prevent power consumption , reduce power consumption, prolong the effect of waiting time

Inactive Publication Date: 2004-08-11
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if there is a device that has started the search process before, it will interfere with the search process, and there will be a problem that the device that has started the search process before cannot be connected at any time.
[0012] On the other hand, in the timing search method described in JP-A-2002-204201, since XID commands are sent continuously until a response is received from the answering station, power consumption increases.
When there is an operator on the starting station side, depending on the situation, the increase in power consumption can be suppressed to a certain extent by clearly issuing an instruction of infrared communication interruption, but in terminals that operate automatically where the operator is often absent, such as vending machines and wireless There is a problem of increased power consumption in personal store terminals, etc.

Method used

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  • Local search processing method and radio communicator
  • Local search processing method and radio communicator
  • Local search processing method and radio communicator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Fig. 4 is a block diagram showing the configuration of an infrared communication device according to Embodiment 1 of the present invention. This infrared communication device is provided with a communication control unit 1100 and an application unit 1200 . The communication control unit 1100 includes a communication frame control unit 1110 , a transmission unit 1120 , a reception unit 1130 , and a transmission distance control unit 1140 . The communication frame control unit 1110 includes a frame determination unit 1111 , and the transmission unit 1120 includes a power control unit 1121 . The application unit 1200 is an application unit using infrared communication, and makes a request to the communication control unit 1100 for data transmission or the like.

[0053] The communication control unit 1100 is a part corresponding to the communication protocol, and receives a request from the application unit 1200, and performs search processing for other communication devi...

Embodiment 2

[0089] The infrared communication device and communication method in Embodiment 2 of the present invention are infrared communication devices and communication methods with the following functions in automatic vending machines and unmanned terminals: if there are many users, high-speed priority is given priority, and if there are few users, control power consumption. Fig. 9 is a block diagram showing the structure of an infrared communication device in Embodiment 2 of the present invention. This infrared communication device is provided with a communication control unit 3100 and an application unit 3200 . The communication control unit 3100 includes a communication frame control unit 3110 , a transmission unit 3120 , a reception unit 3130 , and a latency control unit 3140 . The application unit 3200 is an application unit using infrared communication, and makes a request to the communication control unit 3100 for data transmission or the like.

[0090] The communication cont...

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PUM

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Abstract

To perform rapid and sure connection processing in a wireless communication system that performs communication in compliance with a wireless communication method having a congestion control function. A starting station transmits a discovery request frame and determines whether or not data is received from other communication devices in response to transmitted data. As a result of receiving data and checking FCS (Field Check Sequence), if it is detected that a received frame has been destroyed, or if no data is received from the other communication devices, a transmission distance control part decides a new transmission distance and sends a command to control transmission power to a power control part of a transmitting part, and the power control part transmits the discovery request frame again on the basis of the newly decided transmission distance to repeat discovery processing. This prevents a collision of responses from plural communication devices and ensures discoveries of other communication devices.

Description

technical field [0001] The present invention relates to a central station search processing method of a wireless communication system that performs communication in accordance with a wireless communication method having a congestion control function (for example, a standard specification of an infrared communication method (IrDA: Infrared Data Association), etc.), and wireless communication for performing high-speed connection processing device. Background technique [0002] Communication methods for exchanging data between different computers and between computers and peripheral devices without cables usually include Bluetooth (Bluetooth) and wireless LAN (IEEE802.11a, IEEE802.11b), non-contact IC wireless communication, and infrared communication. Infrared communication method. [0003] For example, infrared communication has the advantages of low cost, low power consumption, and the ability to miniaturize the device, and it is used in various devices typified by remote c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B5/48H04B7/005H04B7/26H04B10/07H04B10/11H04B10/114H04L1/00H04L12/28H04W4/00H04W8/26H04W52/04H04W76/02H04W84/10H04W84/12
CPCH04W8/005H04W52/283H04W28/04
Inventor 古山纯子高山久
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA