A Cooperative Lifetime Extension MAC Protocol in Duty Cycle Enabled Wireless Sensor Networks Hongzhi...
-
Upload
james-townsend -
Category
Documents
-
view
216 -
download
1
Transcript of A Cooperative Lifetime Extension MAC Protocol in Duty Cycle Enabled Wireless Sensor Networks Hongzhi...
A Cooperative Lifetime Extension MAC Protocol in Duty Cycle Enabled
Wireless Sensor NetworksHongzhi Jiaot, Mary Ann Ingram, Frank Y. Li
Milcom 2011
Cooperative transmission works only when there are mul tiple active neighboring senders Successful transmission of the necessary control messages and
copies of the data Ex. OC-MAC
Introduction
Using virtual multiple-input-single-output(MISO) transmission
Problem
C D E
B
A
Cooperative transmission
We also discuss the main goals and challenges of integrating cooperative transmission into a duty cycle MAC protocol Balance the energy consumption
Goal
CDC-MAC Rendezvous selection for data transmission
Phase 1: network initialization and rendezvous Phase 2: Data transmission
Energy-Balance-Oriented scheduling CDC-MAC-1 CDC-MAC-2
Proposed protocol
Rendezvous selection for data transmission Phase 1: network initialization and rendezvous
CDC-MAC
C
D
B
Sync ACK Active window
ACK
ACK
Sync Sync
WB,0 WB,1 WB,2 WB,3 WB,0
Rendezvous selection for data transmission Phase 2: Data transmission (Non-cooperative transmission)
CDC-MAC-1
C
D
BWB,0 WB,1
WA,1
A
WB,0
WA,1
Data transmission Cooperative decision and competition for channel access
Rendezvous selection for data transmission Phase 2: Data transmission (cooperative transmission)
CDC-MAC-1
C
D
BWB,0
WA,1
A
Data transmission Cooperative decision and competition for channel access
Area: 500 m x 250m The energy consumption ratios: 0:1:1.05:1.4
(sleep:idle:reception:transmission)
Simulation