Maximizing Lifetime of Ad Hoc Networks/WSNs

Using Dynamic Broadcast Scheme

Guofeng Deng

Background

Two features of wireless networks: Wireless advantage Transmission range adjustment

Energy constraint

Definition of lifetime:

Number of packets all nodes can get from source

Related Work

Power-efficient broadcasting [1-11]

(minimum total energy consumption) Energy-efficient broadcasting [12-18]

(minimum bottleneck energy consumption)

i

i

i e

RLifetime min

Example

(b) 10000/1.2 = 8333 (c) After 7500 with b, remaining:Node 1: 10000-7500*1.1 = 1750Node 2: 10000-7500*1.2 = 1000Node 3: 10000-7500*1.0 = 2500Node 4: 10000-7500*0 = 10000

Lifetime of (c):Node 1: 1750/1.3 = 1346Node 2: 1000/0 = infiniteNode 3: 2500/0 = infiniteNode 4: 10000/1.0 = 10000Total: 7500+1346 = 8846

1 2

34

1.1

1.4

1.0

1.21.3 1.5

(a)

1 2

34

1.1

1.0

1.2

(b)

1 2

34

1.0

(c)

Fig 1. Example

1.3

1.1

System Model

One source per broadcast tree All broadcast task Adjustable Transmission Power Pre-calculate scheme No interferences and node failures are

considered

Research Problems

If one broadcast tree is given, could another broadcast tree be found such that the combination of these two trees has longer lifetime?

Based on previous problem, how to combine them to achieve maximum lifetime?

How to choose certain amount of trees, for example 2, whose combination has maximum lifetime through topology control?

References Power-Efficient Algorithms and Protocols1. R.Ramanathan, R.Rosales-Hain, Topology Control of Multihop Wireless Networks using

Transmit Power Adjustment, IEEE INFOCOM 20002. Y.C.Tsend, Y.N.Chang, B.H.Tzeng, Energy-Efficient Topology control for Wireless Ad

Hoc Sensor Networks, ICPADS 20023. M.Cagalj, J.P.Hubaux, C.Enz, Minimum-Energy Broadcast in All-Wireless Networks: NP-

Completeness and Distribution Issues, MOBICOM’024. J.E.Wieselthier, G.D.Nguyen, A.Ephremides, On the Construction of Energy-Efficient

Broadcast and Multicast Trees in Wireless Networks, IEEE INFOCOM 20005. J.E.Wieselthier, G.D.Nguyen, A.Ephremides, Distributed Algorithms for Energy-Efficient

Broadcasting in Ad Hoc Networks, MILCOM 20026. W.T.Chen, N.F.Huang, The Strongly Connecting Problem on Multihop Packet Radio

Networks, Communications, IEEE Transactions on, Volume: 37, Issue: 3, March 19897. R.G.Gallager, P.A.Humblet, P.M Spira, A Distributed Algorithm for Minimum-Weight

Spanning Trees, ACM Transactions on Programming Languages and Systems, Vol.5, No.1, January 1983, Pages 66-77

8. A.E.F.Clementi, P.Crescenzi, P.Penna, G.Rossi, P.Vocca, On the Complexity of Computing Minimum Energy Consumption Broadcast Subgraphs, Proceedings of the 18th Annual Symposium on Theoretical Aspects of Computer Science, 2001

9. P.J.Wan, G.Calinescu, X.Y.Li, O.Frieder, Minimum-Energy Broadcast Routing in Static Ad Hoc Wireless Networks, IEEE INFOCOM 2001

Reference (cont’d)10. W.Liang, Constructing Minimum-Energy Broadcast Trees in Wireless Ad

Hoc Networks, MOBIHOC’02, June 9-11, EPFL Lausanne, Switzerland11. S.Guo, O.Yang, Minimum-Energy Broadcast Routing in Wireless Multi-Hop Networks,

Performance, Computing, and Communications Conference, 2003 Energy-Efficient Algorithms and Protocols12. P.Floreen, P.Kaski, J.Kohonen, P.Orponen, Multicast Time Maximization in Energy

Constrained Wireless Networks, DIALM-POMC’03, September 19, 200313. B.Wang, S.K.S. Gupta, On Maximizing Lifetime of Multicast Trees in Wireless Ad Hoc

Networks, ICPP’0314. R.Wattenhofer, L.Li, P.Bahl, Y.M. Wang, Distributed Topology Control for Power

Efficient Operation in Multihop Wireless Ad Hoc Networks, IEEE INFOCOM 200115. I.Papadimitriou, L.Georgiadis, Energy-aware Broadcasting in Wireless Networks,

Wiopt'03 Conference, Sophia-Antipolis, France, March 3-6, 200316. J.Liu, B.Li, Distributed Topology Control in Wireless Sensor Networks With

Asymmetric Links, IEEE GLOBECOM 200317. E.L.Lloyd, R.Liu, M.V.Marathe, Algorithmic Aspects of Topology Control Problems for

Ad Hoc Networks, MOBIHOC’02, June 9-11, 2002 EPFL Lausanne, Switzerland18. I.Kang, R.Poovendran, Maximizing Static Network Lifetime of Wireless Broadcast

Adhoc Networks, Communications, 2003. ICC '03