In this paper, the make-before-break handover method is basically considered in order to reduce the SIP (session initiation protocol) session restoration delay due to the interface switching during WiFi-to-3G vertical handover under IMS (IP multimedia subsystem). Actually, the session restoration delay in WiFi-to-3G handover scenario can be dramatically reduced by performing IMS registration and session re-setup beforehand via WiFi link before actual vertical handover. However, the proper SA (security association) setup scheme between MH (mobile host) and P-CSCF (proxy call session control function) should be developed for the successful pre-authenticated registration since the IP address bound to 3G interface has to be used instead of the IP address bound to WiFi interface as the source IP address of the packets that the MH generates. In this paper, we have enhanced SIP header in order to solve this kind of IP address-mismatch problem. That is, a SA setup scheme is proposed for pre-authenticated registration in WiFi-to-3G handover scenario. We also define IMS handover delay as the sum of authenticated registration delay and session re-setup delay occurring under IMS-based vertical handover. We finally show that this delay reduced by the proposed scheme is acceptable enough to provide delay-sensitive real-time services. Moreover, the modification is deployed only at MH and P-CSCF, which is independent of other party’s network as well as the CSCFs in MH’s HN (home network).
목차
Abstract 1. Introduction 2. Authenticated Registration and Security Association in IMS 2.1. IMS Registration and Session Setup 2.2. IMS-level Authenticated Registration 2.3. Security Association Setup between MH and P-CSCF 3. SA Setup Scheme for Pre-Authenticated Registration 3.1. Vertical Handover Scenario under IMS 3.2. The Proposed Scheme 4. Performance Evaluations 4.1. Queueing Delay 4.2. Transmission Delay 5. Evaluation Results and Discussions 5.1. SA Setup Scheme via 3G Link after Actual Vertical Handover 5.2. SA Setup Scheme via Wi-Fi Link before Actual Vertical Handover 6. Conclusion Acknowledgement References
보안공학연구지원센터(IJMUE) [Science & Engineering Research Support Center, Republic of Korea(IJMUE)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Multimedia and Ubiquitous Engineering
간기
월간
pISSN
1975-0080
수록기간
2008~2016
등재여부
SCOPUS
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Multimedia and Ubiquitous Engineering Vol.9 No.9