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Serving radio network controller relocation for UMTS all-IP network

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4 Author(s)
Ai-Chun Pang ; Dept. of Comput. Sci. & Inf. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Yi-Bing Lin ; Hsien-Ming Tsai ; Agrawal, P.

To support real-time multimedia services in UMTS all-IP network, Third-Generation Partnership Project TR 25.936 proposed two approaches to support real-time serving radio network controller (SRNC) switching, which require packet duplication during SRNC relocation. These approaches significantly consume extra system resources. This paper proposes the fast SRNC relocation (FSR) approach that does not duplicate packets. In FSR, a packet buffering mechanism is implemented to avoid packet loss at the target RNC. We propose an analytic model to investigate the performance of FSR. The numerical results show that packet loss at the source RNC can be ignored. Furthermore, the expected number of packets buffered at the target RNC is small, which does not prolong packet delay.

Published in:

Selected Areas in Communications, IEEE Journal on  (Volume:22 ,  Issue: 4 )

Date of Publication:

May 2004

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