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Resource Allocation in Wireless Networks Using Directional Antennas. Imad Jawhar,Jie Wu IEEE PERCOM 2006. Outline. Introduction Proposed protocol for QoS routing Simulation Conclusion. Bottleneck. Flow1. c. e. j. Flow2. Flow3. Introduction.

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resource allocation in wireless networks using directional antennas

Resource Allocation in Wireless Networks Using Directional Antennas

Imad Jawhar,Jie Wu

IEEE PERCOM 2006

outline
Outline
  • Introduction
  • Proposed protocol for QoS routing
  • Simulation
  • Conclusion
introduction

Bottleneck

Flow1

c

e

j

Flow2

Flow3

Introduction
  • QoS in MANET is an essential component that is needed to support multimedia and real-time applications.
  • Spatial reuse is a very important factor in wireless network.
introduction1
Introduction
  • Directional antenna technology provides the capability for considerable increase in spatial reuse.
  • Multi-Beam Adaptive Array (MBAA) Antenna
    • Power Saving
    • Spatial reuse
      • Send simultaneously at multiple directions.

B

B

A

A

MBAA Antenna

C

C

D

D

motivation and goal
Motivation and Goal
  • Proposed a bandwidth reservation protocol for QoS routing in TDMA-based MANETusing directional antennas.
  • Goal: Reduce end-to-end delay.

b

Flow1

c

e

i

j

Flow2

n

Flow3

network environment
Network Environment
  • All nodes are static.
  • Each node equips MBAA antenna and keeps track of the slot status information of its 1-hop and 2-hop neighbors.
  • Angular groups in MBAA antenna.
  • ={13,14} , ={14,15}
rule for slot allocation
Rule for Slot Allocation
  • All beams can transmit or receive, but transmitting and receiving not allow simultaneously.

B

C

A

A

B

Not allowed

C

rule for slot allocation1
Rule for Slot Allocation
  • The same angle of beam problem.
    • When z-->w
      • z--/->y
      • x--/->w
      • x--/->y

x

w

y

z

x

y

z

w

proposed protocol for qos routing
Proposed protocol for QoS routing
  • QREQ packet
  • QREP packet
    • QREP(S, D, id, b, PATH, NH)

Destination

Source

The session id

QREQ(S, D, id, b, x, PATH, NH)

Number of slots required

A list of next hop information, including hosts and slots

The Host forwarding the message

A list of demand route, including hosts and slots.

example
Example

p

  • Node a to node b and p.
    • Route: a—b—h
  • Node d to node b.

QREQ

(a,h,1,1,b,{(a,S1),(b,S2)},(h,S2))

a

b

QREQ

(a,h,1,1,a,{(a,S1)},(b,S1))

d

QREQ

(d,b,2,1,d,{(d,S1)},(b,S1))

h

R

S

S

R

R

S

{14,15}

{6,7}

{2,3}

{14,15}

{8,9}

{6,7}

{1,16}

{10,11}

simulation1
Simulation

Data Message 10MB

Data Message 100MB

conclusion
Conclusion
  • This paper proposed a protocol for TDMA-based bandwidth reservation for QoS routing in MANET using directional antennas.
  • Reduce end-to-end delay.