1. Page 1 End-to-End Bandwidth Reservation in IEEE 802.16 Mesh Networks Claudio Cicconetti, Vanessa Gardellin, Luciano Lenzini, Enzo Mingozzi IEEE International Mobile Adhoc and Sensor Systems, 2007 (MASS 2007)

2. Page 2 Outline Introduction EBRP messages and procedures Call admission control Performance evaluation Conclusion

3. Page 3 Introduction Coordinated distributed mesh mode Frame consists of two subframes Consists of two phases  EBRP messages and procedures  Call admission control Control subframeData subframe

4. Page 4 EBRP messages and procedures Three-way handshake RequesterGrantor Request message Grant message Confirm message

5. Page 5 EBRP messages and procedures

6. Page 6 EBRP messages and procedures PATH message  The originator and recipient IDs  The traveled nodes  The TSPEC  TFID RESV message  Routed through the same path in the PATH message  Performs the CAC procedure when receipting RESV message

7. Page 7 Call admission control Call Admission Control  Interference  Bandwidth  (QoS)

8. Page 8 Call admission control Interference

9. Page 9 Call admission control Traffic flow i is admitted if Bytes need to schedule to traffic flow i

10. Page 10 Performance evaluation Implemented into ns2 simulator  Frame duration ： 4 ms  Modulation and coding ： QPSK ¾  Nodes ： grid of 5*5  Gateway ： four vertices of the grid Performance indices ：  Setup latency  Blocking probability

11. Page 11 Performance evaluation Blocking probability and setup latency of 8 control slots per frame with different traffic load

12. Page 12 Performance evaluation Blocking probability and setup latency of traffic load = 1/s with different control slots per frame

13. Page 13 Conclusion EBRP is an end-to-end bandwidth reservation scheme for resource reservation Reducing the number of control slots per frame provides a higher available capacity for data transmission, but, at the same time, increases the setup latency