Method for performing packet flooding at wireless ad hoc...

Details Method for performing packet flooding at wireless ad hoc... Method for performing packet flooding at wireless ad hoc...

2007-09-04

2007-09-04

Nguyen, Tony T. (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S127100, C455S445000, C370S328000, C370S338000

Reexamination Certificate

active

10817926

ABSTRACT:
A method for packet re-flooding in a wireless ad hoc network for transmitting a broadcast packet from a source node to a destination node. In order to determine the respective nodes received with the broadcast packet from the source node into a certain number of power levels in accordance with the receiving power of the signal carrying the received packet, the packet re-flooding method includes the steps of setting a power level reference by which the power level increases as the receiving power increases, obtaining the receiving power of the signal carrying the packet received from the respective nodes but not the source node, determining power levels based on the power level reference and the obtained receiving power, calculating a back-off delay time in accordance with the power levels of the respective nodes but not the source node, and re-flooding the received packet when the calculated back-off delay time of the respective nodes excluding the source node expires and when the received packet is the first packet that is received. Accordingly, the possibility of having collisions due to re-flooding of the respective nodes is reduced, and also, overall power consumption of the network decreases.

REFERENCES:
patent: 6940832 (2005-09-01), Saadawi et al.
patent: 2003/0161268 (2003-08-01), Larsson et al.
patent: 2004/0174825 (2004-09-01), Li et al.
Yumiko Kitagishi, et al., “Packet relay Control Scheme Based on Priority Regions in Multihop Wireless Networks”, vol. J85-B, No. 12, pp. 2119-2128, 2002.

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