Tham khảo tài liệu 'cellular networks positioning performance analysis reliability part 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Performance Analysis of Seamless Handover in Mobile IPv6-based Cellular Networks 319 intelligent access routers iARs via radio link during handover and the signaling cost for each message is represented by K. The same principle applies to Equation 11 . Under the random-walk model the mobility signaling cost functions for MIPv6 with tunnel and route optimization RO modes HMIPv6 predictive FMIPv6 P-FMIPv6 reactive FMIPv6 R-FMIPv6 F-HMIPv6 are given in Zhang Pierre 2008 . The mobility signaling cost functions for predictive SMIPv6 P-SMIPv6 and reactive SMIPv6 R-SMIPv6 are expressed as follows Zhang Pierre 2008 Zhang et al. 2010 1 CP SMIPv6 SP-SMIPv6 X 1 - q E T 12 rs _ _ SR sMiPvP 1 q R SMIPv6 E T 13 Where q is the probability that a mobile node remains in its current cell E T is the average cell residence time s Sp SMIPV6 and Sr SMIPV6 represent the mobility signaling overheads obtained from Equations 10 and 11 . Using the fluid-flow model the mobility signaling cost functions for MIPv6 Johnson et al. 2004 with tunnel and RO modes HMIPv6 Soliman et al. 2008 predictive and reactive FMIPv6 Koodli 2008 F-HMIPv6 Jung et al. 2005 are given in Zhang Pierre 2008 . The mobility signaling cost functions for predictive SMIPv6 P-SMIPv6 and reactive SMIPv6 R-SMIPv6 are expressed as follows Zhang Pierre 2008 Zhang et al. 2010 CP SMIPv6 Rc x SP SMIPv6 x 1 q 14 CR SMIPv6 Rc x SR SMIPv6 x 1 q 15 Where Rc is the cell crossing rate . the average number of crossings of the boundary of a cell per unit of time s q is the probability that a mobile node remains in its current cell Sp SMIPv6 and Sr SMIPv6 represent the mobility signaling overheads obtained from Equations 10 and 11 . Packet delivery cost Packet delivery cost per session are defined as the cost of delivering a session from a source node to a destination node which includes all nodes processing costs and link transmission costs from the source to the destination. We assume that HMIPv6 Soliman et al. 2008 FMIPv6 Koodli
