Resource Reservation and Allocation Based on Direction Prediction for Handoff in Mobile Multimedia Networks

Lee, Jong-Chan; Kim, Hong-Jin; Kim, Kuinam J.

doi:10.1007/3-540-44864-0_58

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…Finally, to compare the proposed CRP model with some existing works , Figure shows that the proposed model can improve P d‐isho (the dropping probability of inter‐sector handoff calls) by 17% for low‐traffic distribution and 20% for high‐traffic distribution as the speed of MTs equals 20 km/h. The improvement in P d‐isho is gradually reduced as the speed of MTs is increased.…”

Section: Numerical Simulation and Discussionmentioning

confidence: 99%

“…In a dynamic resource reservation scheme, a mobile host is required for sending reservation‐change messages frequently to the BS of the surrounding cells. Similarly, Lee et al proposed a resource reservation and allocation scheme, which can predict the moving direction of an MT when it moves between two zones within a sector. In , a vector machine is designed to compute the adequate amount of bandwidth reserved for the target cell so that the forced termination probability can be reduced.…”

Section: Introductionmentioning

confidence: 99%

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A channel reservation and preemption model using overlapping regions in sector‐based cellular networks

Sheu

Lin

Hwang

2013

Wireless Communications

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This paper presents a channel reservation and preemption (CRP) model using overlapping regions in a cellular network with multiple sectors. To fully exploit and reuse the frequencies, directional antennas are installed on base stations (BSs) to divide the coverage into a number of equal-sized sectors. When traffic is unevenly distributed across the sectors in a BS, channel utilization in every sector may become very different; low-traffic sectors may be underutilized while high-traffic sectors may be overutilized. A CRP scheme is thus proposed to more efficiently utilize free channels among sectors. CRP aims at reducing the dropping probabilities of handoff calls. Specifically, when free channels in a sector are not available, a handoff call, instead of being dropped, is allowed to preempt an ongoing call residing in the overlapping region of two adjacent sectors or two neighbor cells. Under CRP, the preempted ongoing call will not be disconnected, because it can switch over its service to the BS of a neighbor cell or to another directional antenna of an adjacent sector. For the purpose of evaluation, we build an analytical model for the proposed CRP using six-tuple Markov chains. Analytical results show that the proposed CRP can significantly reduce the dropping probabilities of inter-sector handoff calls, particularly when traffic between two sectors is not evenly distributed.

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Section: Numerical Simulation and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A channel reservation and preemption model using overlapping regions in sector‐based cellular networks

Sheu

Lin

Hwang

2013

Wireless Communications

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“…Based on [10], the BS coverage area is divided into zones and sectors as shown in Figure 1. The hexagonal BS structure is divided into three zones: no handover (No-HO) zone, low handover (Lo-HO) zone and high handover (High-HO) zone based on signal quality [8].…”

Section: Mmdp Schemementioning

confidence: 99%

Efficient Routing Protocol for Hand over Delay Minimization in Mobile WiMAX using Concurrent Scanning

Shankar¹,

Raddy²,

Rao³

2013

IJCA

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In this article an efficient routing protocol has been identified for real time and non -real time applications.The MS movement direction prediction (MMDP) based MS scanning is implemented to overcome the mobile WiMAX handover issues. Here the authors have used the MMDP method to reduce the number of scanning's required for the handover instead of scanning for all neighboring BSs and suggested that on using the concurrent scanning procedure for the best two TBS high quality hand over support in Mobile WiMAX can be achieved. On performing concurrent scanning of two best target base stations, issues like ideal sectors, network congestion and fast change in RSS are proposed to be minimized.The proposed algorithm targets to meet the quality of service requirements. Performance results for simulation scenarios are presented and discussed. KeywordsRouting protocols, MMDP scanning, concurrent scanning. 1.INTRODUCTION HAND OVER Methodology:Hand over is required in mobile wireless communication to maintain uninterrupted services during user's movement from one location to another. This can affect the QoS & capacity of mobile broadband network. The hand over techniques can be divided into soft hand over (make_ before_ break) & hard over (break_before_make). In Soft hand over connection, the serving base station (SBS) is terminated before a mobile station(MS) switches to another base station. Break time is zero during hand over and spectral efficiency is reduced.. Its counterpart Hard Handover (HHO) uses a break before make approach. Mobile WiMAX network uses packet switching with mostly bursty delay tolerant data traffic. Therefore HHO is used in mobile WiMAX.The intersection between the two received signal strength (RSS) lines is the criteria for Hand off (HO) trigger. Frequent HO should be avoided, and a HO is triggered only when the difference between RSS of serving Base Station (BS) and target BS (TBS) is below the target value. Handover takes place in two main phases; the network topology acquisition, also known as pre-handover phase, and the actual handover phase. The first phase includes network topology advertisement, neighboring Base Station (nBS) scanning and association. The second phase includes handover decision and initiation, and network re-entry synchronization and ranging with a TBS. In the scanning process, the MS must synchronize with all advertised (nBS) to select the best BS candidate for the incoming handover action. Without terminating the connection between the Serving Base Station (SBS) and Mobile Station (MS), the SBS will schedule the scanning intervals or sleep-intervals to MS for scanning. MMDP SchemeThe SBS keeps track of the MS movement location and trajectory based on LBS as it is supported in the new WiMAX standard of IEEE 80216m. Based on [10], the BS coverage area is divided into zones and sectors as shown in Figure 1. The hexagonal BS structure is divided into three zones: no handover (No-HO) zone, low handover (Lo-HO) zone and high handover (High-HO) zone based on signal quali...

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Movement direction-based handover scanning for mobile WiMAX

Ben-Mubarak¹,

Ali²,

Noordin³

et al. 2011

The 17th Asia Pacific Conference on Communications

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Resource Reservation and Allocation Based on Direction Prediction for Handoff in Mobile Multimedia Networks

Cited by 4 publications

References 6 publications

A channel reservation and preemption model using overlapping regions in sector‐based cellular networks

A channel reservation and preemption model using overlapping regions in sector‐based cellular networks

Efficient Routing Protocol for Hand over Delay Minimization in Mobile WiMAX using Concurrent Scanning

Movement direction-based handover scanning for mobile WiMAX

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