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Contention-based data communication apparatus and method

A technology for data communication and communication devices, which is applied in the field of competition-based data communication devices and can solve problems such as collisions

Inactive Publication Date: 2011-05-11
ELECTRONICS & TELECOMM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But even with CSMA, collisions can occur when two different communicators attempt to transmit at the same time

Method used

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  • Contention-based data communication apparatus and method
  • Contention-based data communication apparatus and method
  • Contention-based data communication apparatus and method

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Embodiment Construction

[0023] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] The embodiment of the present invention relates to a contention-based data communication device and its method, which uses the previous detection signal to notify the use of wireless resources during data transmission, and when sensing the detection signal sent from other communication devices, Consider sending data in order of priority.

[0025] figure 1 is a diagram showing the structure of a contention-based data communication device according to an embodiment of the present invention. refer to figure 1 , the contention-based data communication device 100 may include a transmission judgment unit 110 , a monitoring unit 120 , a detection signal generation unit 130 , a detection signal detection unit 140 , a transmission unit 150 and a reception unit 160 .

[0026] The monitoring unit 120 uses the presence or absence of a carrier received by t...

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Abstract

Provided is a contention-based data communication apparatus and method that may notify that a radio resource is to be used using a search signal prior to transmitting a communication frame, and may transmit data based on a priority when a search signal received from another communication apparatus is detected.

Description

technical field [0001] The technical field of the present invention relates to a contention-based data communication device and a method thereof, and relates to a communication device and a communication method for reducing collision probability caused by multiple access connections. Background technique [0002] In a contention-based communication device, a carrier sensing media access (CSMA) method is generally used to reduce collisions. But even with CSMA, collisions can occur when two mutually different communication devices attempt to transmit at the same time. Representative methods corresponding to such collisions include collision detection CD (Collision Detection) and collision avoidance CA (Collision Avoidance). CD (Collision Detection) is a method that senses the occurrence of a collision, stops transmitting data, and uses Random Back-off to reduce the probability of collision in the next stage when a collision occurs. CA (Collision Avoidance) is a method of ran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08
CPCH04W8/005H04W74/08
Inventor 柳星珍高光进黄貹铉严重善宋明善金昌周
Owner ELECTRONICS & TELECOMM RES INST
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