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Radio communication method, radio communication system, radio communication device, and congestion control method

A technology of a wireless communication device and a wireless communication system, which is applied in the fields of wireless communication systems, media access control, and wireless communication devices, and can solve problems such as inability to confirm responses and promote congestion

Inactive Publication Date: 2010-07-07
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0032] In the case of using passive ACK for the above-mentioned broadcast to confirm the response, it is necessary to transmit the frames sent by some nodes in order, and use the frame with the same size as the sent data. In the case of multiple nodes using broadcast to communicate, not only Contributes to congestion and, for example, does not allow acknowledgment in networks that do not transmit broadcast frames

Method used

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  • Radio communication method, radio communication system, radio communication device, and congestion control method
  • Radio communication method, radio communication system, radio communication device, and congestion control method
  • Radio communication method, radio communication system, radio communication device, and congestion control method

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Embodiment Construction

[0213] Embodiments of the present invention will be described below with reference to the drawings.

[0214]

[0215] figure 1 It is an explanatory diagram showing the state transition of the wireless communication method, the wireless communication system, and the wireless communication device according to the first invention. figure 1 (a) indicates that Node 1 (Node 1) and Node 2 (Node 2), Node 2 and Node 3 (Node 3) are within the communicable range, and Node 1 and Node 3 are not within the communicable range. Under such circumstances, in the present invention, such as figure 1 As shown in (b), node 2 undergoes a state transition and becomes a representative node (DesiGnated Node, hereinafter referred to as DGN). Here, will figure 1 The states of (a) and (b) are called spare mode (Spare Mode) and dense mode (Dense Mode) respectively.

[0216]Also, in the first invention, an arbitrary period within a superframe period of a certain period is defined as an active peri...

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Abstract

Disclosed is a technique to prevent a collision between radio communication devices close to one another. According to the technique, in the state that the radio communication devices are close to one another, one of them becomes a representative node and transmits a representative node advertisement message. When the representative node has received a data packet after transmission of the representative node advertisement message, the representative node transmits a reply acknowledgment message . When a radio communication device which is not decided to be a representative node has become a normal node and has received a representative advertisement message, it transmits a data packet. When it receives an acknowledgment message after transmission of the data packet, transmission of a data packet during the next active period is stopped.

Description

technical field [0001] The present invention relates to defining any period in a superframe (superframe) period of a certain period as an active (active) period, defining the remaining period as a sleep period, and dividing the active period into a plurality of time slots (time slots). A wireless communication method, a wireless communication system, and a wireless communication device in which each device of the wireless communication device performs bidirectional communication in a time-division manner using each time slot. [0002] In particular, the present invention relates to media access control (MAC: Media Access Control) with low power consumption when a mobile wireless communication device (node) performs bidirectional data exchange while periodically transmitting data. [0003] Furthermore, the present invention relates to defining a predetermined period within a superframe period of a certain period as an active period, defining the remaining period as a sleep peri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02H04W52/02
CPCH04W84/20H04W52/0216H04W74/085Y02D30/70
Inventor 横堀充川上哲也宫本和彦铃木良宏
Owner PANASONIC CORP