WiMAX Convergence Sublayer Implementation in Embedded Systems

1. WIMAX聚合子層於嵌入式系統下之探討與實現 Speaker: Chao-Sung Yah (葉昭松) Advisor: Dr. Kai-Wei Ke (柯開維 博士) Date: 07/28/2008 The research and implementation of WiMAX convergence sublayer system over an embedded system

2. OUTLINE • Introduction IEEE 802.16d MAC Layer IEEE 802.16d CS sub-layer • QoS in Ethernet IEEE802.1Q/p Type of Service Diff-Serv • IEEE 802.16d-2004 Convergence Sub-layer Implementation System Architecture Priority design PHS design System over embedded system • Conclusion and Future Work

3. IEEE 802.16D MAC LAYER • Convergence Sublayer (CS) • Mapping external network data into MAC SDU • Classifying external network SDU • Associating to MAC connection ID • Payload header suppression (PHS) • Common Part Sublayer (CPS) • System access • Bandwidth allocation • Connection establishment • Connection maintenance • Security Sublayer • Authentication • Security key exchange • Encryption

4. OUTLINE • Introduction IEEE 802.16d MAC Layer IEEE 802.16d CS sub-layer • QoS in Ethernet IEEE802.1Q/p Type of Service Diff-Serv • IEEE 802.16d-2004 Convergence Sub-layer Implementation System Architecture Priority design PHS design System over embedded system • Conclusion and Future Work

5. IEEE 802.16D CS SUB-LAYER • Asynchronous Transfer Mode (ATM) CS • Packet CS The packet CS is used for transport for all packet-based protocols such as Internet Protocol (IP),Point-to-Point Protocol (PPP), and IEEE Std 802.3 (Ethernet). • Other CSs may be specified in the future

6. IEEE 802.16D CS SUB-LAYER • Down-link • Classification of the higher-layer protocol PDU • Suppression of payload header information (optional) • Delivery of the resulting CS PDU to the MAC SAP • UP-link • Receipt of the CS PDU from MAC SAP • Rebuilding of any suppressed payload header information (optional)

7. PAYLOAD HEADER SUPPRESSION (PHS)METHOD

8. OUTLINE • Introduction IEEE 802.16d MAC Layer IEEE 802.16d CS sub-layer • QoS in Ethernet IEEE802.1Q/p Type of Service Diff-Serv • IEEE 802.16d-2004 Convergence Sub-layer Implementation System Architecture Priority design PHS design System over embedded system • Conclusion and Future Work

9. IEEE802.1Q/P FIELD

10. OUTLINE • Introduction IEEE 802.16d MAC Layer IEEE 802.16d CS sub-layer • QoS in Ethernet IEEE802.1Q/p Type of Service Diff-Serv • IEEE 802.16d-2004 Convergence Sub-layer Implementation System Architecture Priority design PHS design System over embedded system • Conclusion and Future Work

11. TYPE OF SERVICE

12. OUTLINE • Introduction IEEE 802.16d MAC Layer IEEE 802.16d CS sub-layer • QoS in Ethernet IEEE802.1Q/p Type of Service Diff-Serv • IEEE 802.16d-2004 Convergence Sub-layer Implementation System Architecture Priority design PHS design System over embedded system • Conclusion and Future Work

13. DIFFERENTIAL SERVICE(DIFFSERV)

14. DIFFERENTIAL SERVICE CODE POINT Four kind of Per Hop Behavior ： • 一、The Default PHB：DCSP value is 000000， Service type is Best Effort Service 。 • 二、Class-Selector PHBs，DSCP value is xxx000，the default Codepoint is also Class-Selector Codepoint 。 • 三、Expedited Forwarding(EF) PHB，low loss ，low delay ，low jitter，bandwidth guarantee ， DSCP value is 101110。 • 四、Assured Forwarding (AFxy) PHB ，F4>F3>F2>F1 ，Fx3>Fx2>Fx1

15. DIFFERENTIAL SERVICE CODE POINT

16. OUTLINE • Introduction IEEE 802.16d MAC Layer IEEE 802.16d CS sub-layer • QoS in Ethernet IEEE802.1Q/p Type of Service Diff-Serv • IEEE 802.16d-2004 Convergence Sub-layer Implementation System Architecture Priority design PHS design System over embedded system • Conclusion and Future Work

17. SYSTEM ARCHITECTURE

18. OUTLINE • Introduction IEEE 802.16d MAC Layer IEEE 802.16d CS sub-layer • QoS in Ethernet IEEE802.1Q/p Type of Service Diff-Serv • IEEE 802.16d-2004 Convergence Sub-layer Implementation System Architecture Priority design PHS design System over embedded system • Conclusion and Future Work

19. 802.1P PRIORITY AND SERVICE FLOW VALUE DESIGN

20. TOS/DSCP VALUE DESIGN

21. DSCP/TOS VALUE DESIGN

22. DSCP/TOS VALUE DESIGN

23. DSCP/TOS VALUE DESIGN

24. DSCP/TOS VALUE DESIGN

25. WELL-KNOW PORT AND SERVICE FLOW VALUE DESIGN

26. RTP PAYLOAD TYPE AND SERVICE FLOW VALUE DESIGN

27. OUTLINE • Introduction IEEE 802.16d MAC Layer IEEE 802.16d CS sub-layer • QoS in Ethernet IEEE802.1Q/p Type of Service Diff-Serv • IEEE 802.16d-2004 Convergence Sub-layer Implementation System Architecture Priority design PHS design System over embedded system • Conclusion and Future Work

28. PHS

29. PHS REBUILDED

30. OUTLINE • Introduction IEEE 802.16d MAC Layer IEEE 802.16d CS sub-layer • QoS in Ethernet IEEE802.1Q/p Type of Service Diff-Serv • IEEE 802.16d-2004 Convergence Sub-layer Implementation System Architecture Priority design PHS design System over embedded system • Conclusion and Future Work

31. CS over embedded system

32. OUTLINE • Introduction IEEE 802.16d MAC Layer IEEE 802.16d CS sub-layer • QoS in Ethernet IEEE802.1Q/p Type of Service Diff-Serv • IEEE 802.16d-2004 Convergence Sub-layer Implementation System Architecture Priority design PHS design System over embedded system • Conclusion and Future Work

33. CONCLUSION • 更聰明與更智慧的分類機制的設計的困難 • 更深入的辨別多媒體封包 • 加強的分辨機制提高對QoS的幫助 • 難以設計與複雜的檔頭壓縮機制

34. FUTURE WORK • Port Number的完整歸類 • 基於IPv6的分類 • IEEE802.16e-2005的擴充 • 使用者定義的部份

35. OUTLINE • Introduction IEEE 802.16d MAC Layer IEEE 802.16d CS sub-layer • QoS in Ethernet IEEE802.1Q/p Type of Service Diff-Serv • IEEE 802.16d-2004 Convergence Sub-layer Implementation System Architecture Priority design PHS design System over embedded system • Conclusion and Future Work

36. DEMO