Network device and data transmission method thereof in...

Details Network device and data transmission method thereof in... Network device and data transmission method thereof in...

2011-03-29

2011-03-29

Ngo, Ricky (Department: 2464)

Multiplex communications

Diagnostic testing

C370S252000, C370S329000

Reexamination Certificate

active

07916650

ABSTRACT:
A wireless sensor network and data transmission method thereof provides for improving channel access efficiency and energy saving effect by using inventive carrier sensing mechanism. The data transmission method includes assessing a channel after initializing, when a packet to be transmitted is generated, a number of carrier sensing attempts (Ns) and a backoff value (W); determining, when the channel availability is assessed to be idle, whether W reaches 0; transmitting the packet if W reaches 0; and reassessing, if W does not reach 0, the channel after a duration corresponding W/(Ns-1) slot.

REFERENCES:
patent: 7321580 (2008-01-01), Ramanathan et al.
patent: 2002/0154653 (2002-10-01), Benveniste
patent: 2006/0274776 (2006-12-01), Malik et al.
patent: 2008/0181192 (2008-07-01), Nabetani et al.

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