Fast Handover Scheme for Supporting Network Mobility in IEEE 802.16e BWA System

Abstract

Support of network mobility (NEMO) in nextgeneration wireless systems requires an effective handover scheme optimized specially for NEMO. Conventional NEMO basic support protocol brings high handover latency, which is unacceptable for the real-time services such as VoIP. And other node mobility schemes are not quite suitable for NEMO. In this paper, we propose, and evaluate a fast handover scheme for supporting NEMO in IEEE 802.16e BWA networks. The results of the evaluation show that our scheme has much lower handover latency than NEMO basic support protocol. It also only involves few modifications in network entities and works well with other schemes, which support node mobility.

An Efficient Fast Handoff and Route Optimization Protocol for the Nested Mobile Networks

“…In [5], the authors proposed fast handoff protocol for NEMO that anticipates handoff using L2-trigger. On receiving L2-trigger, the MR initiates the handoff process by sending fast binding update (FBU) [6] to HA_MR.…”

“…For E2ERO, γ E2ERO-G and γ E2ERO-L contain duration from start of L2 handoff, to the receipt of BU by HA_MR and LBU by TLMR respectively 5 . So, γ E2ERO-G and γ E2ERO-L can be obtained from h E2ERO-G and h E2ERO-L by subtracting (lT wireless +T wired +T internet ) and (l-1)T wireless respectively.…”

“…However, packet loss occurs in reactive mode but the duration is still less than that of E2ERO. This is due to the fact that in 5 The packet will be redirected by HA_MR and TLMR as soon as it receives BU and LBU respectively. Based on equations 8, 9 and 11, the comparison graph is drawn as in Fig.…”

Design and Analysis of the FHCoP-B Scheme for Fast Handoff Support in the Nested Mobile Network

“…There are few researches mentioned about supporting fast handover in NEMO. In [13], a fast NEMO (FNEMO) scheme was proposed. When the handover of MR is triggered, the MR sends an FBU to its HA for setting up a tunnel with the new access router (NAR) by exchanging the handover initiate (HI) and handover acknowledge (HAck) messages.…”

On Supporting Multiple Quality-of-Services Classes in Mobile WiMAX Handoff

“…The amendment 802.16e has been defined to support mobility and other extensions [12]. Based on the 802.16e handoff (HO) mechanism, many new HO enhancements have been proposed [2,5,6,7,8,10,14,15,18,19,21,22,23,24]. Most of them, however, try to address only a specific scenario or a particular QoS issue.…”