Downlink performance of handover techniques for IEEE 802.16j multi-hop relay networks

Sultan, Jamil; Ismail, Mahamod; Misran, Norbahiah

doi:10.1109/canet.2008.4655305

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…The combination of relay scheme with MIMO (multiple input multiple output) [2] equipped with multiantenna both in the transmitter and receiver sides is also an attractive choice [3], since not only multiple relay with a single antenna could form a virtual MIMO system, but also terminals with multiple antenna could improve the performance as the case of conventional MIMO systems. Among wide variety of applications of relay systems, for example, wireless LAN (local area network) [4], ITS (intelligent transport system) [5], and digital terrestrial broadcasting [6] are included, and multi-hop networks are also considered [7]. In addition to them, it has been shown that relay processing is useful for multi-cellular networks [8].…”

Section: Introductionmentioning

confidence: 99%

Design of multiuser MIMO AF relay system for multi-cellular networks

Taniguchi

Ramli

Karasawa

2009

2009 IEEE 9th Malaysia International Conference on Communications (MICC)

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This paper describes design methods of MIMO (multiple input multiple output) AF (amplify and forward) relay system for multiuser processing which is useful for multi-cellular networks. Each source is allocated one relay terminal, and relays cooperatively work to mitigate interferences one another based on ZF (zero forcing) or maximum SINR (signal to interference plus noise ratio) criteria. The necessary conditions of the optimality are shown for the system consisting of sources, relays, and destinations equipped with multiantenna under the assumption of perfect CSI (channel state information). Computer simulations show the effectiveness of the proposed approach.

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Section: Introductionmentioning

confidence: 99%

Design of multiuser MIMO AF relay system for multi-cellular networks

Taniguchi

Ramli

Karasawa

2009

2009 IEEE 9th Malaysia International Conference on Communications (MICC)

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“…Yun et al [17] propose a fast handover scheme (FHS) to reduce the handover signaling cost and to decrease handover delay by applying fast handovers for mobile IPv6 (FMIPv6) to IEEE 802.16j networks, which determines the cross-subnet handover in advance through the interaction of MAC layer messages. Sultan et al [18] perform simulation study of three handover techniques (SSTHT) within the IEEE 802.16j standards and prove that the macro diversity handover (MDHO) outperforms the HHO and fast base station switching. MDHO is the process by which an MS maintains connection with two or more access stations called a diversity set.…”

Section: Introductionmentioning

confidence: 99%

An accelerating handover process scheme for IEEE 802.16j multi-hop relay networks

Chang

2013

J Wireless Com Network

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IEEE 802.16j multi-hop relay network systems provide the mobile wireless communication environment. In such network systems, the handover scanning procedure allows a mobile station (MS) to obtain the information about the handover target base stations (BSs) or relay stations (RSs). The network systems need more time to negotiate the association parameters and to handle scanning the BSs and the RSs when the number of BS and RS increases. It results in more overhead for the handover scanning procedure. In order to accelerate the handover process and reduce the transmission interruption, efficient handover scanning procedure schemes and corresponding algorithms must be developed and designed. A novel relative angle computing algorithm is proposed in this article to accelerate the handover process by taking into account the moving behavior of the MS, and the distances among the MS, the RS, and the BS. The main idea of this algorithm is to reduce the management information overhead and to estimate the potential moving path of the MS in the wireless mobile communication networks. By using the proposed scheme, we eliminate the unnecessary associations and scanning intervals, and reduce the handover scanning procedure efficiently. Simulation result demonstrate the superior performance of our proposed scheme and its ability to strike the appropriate performance in the handover overhead and the message delay for IEEE 802.16j multi-hop relay network systems.

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