Handover criteria for city microcellular radio systems

Chia, S.T.S.; Warburton, R.J.

doi:10.1109/vetec.1990.110333

Cited by 45 publications

(11 citation statements)

References 2 publications

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“…Traditional handoff decision algorithms are based on the RSSI [11]- [12]. If the RSSI is smaller than a certain threshold, the handoff from one AP to the other occurs.…”

Section: Proposed Handoff Decision Methodsmentioning

confidence: 99%

Fast Handoff Scheme for Seamless Multimedia Service in Wireless LAN

Kim

Park

et al. 2006

NETWORKING 2006. Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile A

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Abstract. In this paper1 , we propose a fast handoff method for seamless multimedia service in IEEE 802.11 WLAN. The proposed method uses an improved access point (AP) with additional radio frequency (RF) module, SNIFFER, monitoring the movement of the station (STA). By using the SNIFFER, the proposed method can completely remove the probe delay. Furthermore, we also propose an effective handoff decision method taking into account the quality of service (QoS) in the application layer. The proposed method uses packet loss information and the received signal strength indication (RSSI) for the handoff decision. Experimental results show that the proposed method can improve the performance of the seamless multimedia service by drastically reducing the handoff delay and packet loss.

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“…Traditional handoff decision algorithms are based on the RSSI [11]- [12]. If the RSSI is smaller than a certain threshold, the handoff from one AP to the other occurs.…”

Section: Proposed Handoff Decision Methodsmentioning

confidence: 99%

Fast Handoff Scheme for Seamless Multimedia Service in Wireless LAN

Kim

Park

et al. 2006

NETWORKING 2006. Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile A

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“…Considering that the user is moving with constant speed the soft handover probability can be expressed by Equation (5) below. Considering scenario in Figure 2(a) as an illustrative example the soft handover probability can be computed using Equation (6).…”

Section: Soft Handover Probability Determinationmentioning

confidence: 99%

“…However, growing demand for supporting higher multimedia data rate, streaming video, and Internet services on 3G networks has been demanding further minimization of soft handover and its failure. As the soft handovers become inevitable over cell boundaries of a cellular mobile network when a MS penetrates into the new cell (target cell) and number of handovers determines the quality of service (QoS) of the network, therefore minimizing number of soft handovers has been an important consideration in development of handover algorithms [4][5][6][7][8][9]. A good handover algorithm is expected to meet both the bounds-1) minimum number of handovers for maintaining QoS and 2) low probability of handover failures due to limited target cell resources.…”

Section: Introductionmentioning

confidence: 99%

Soft Handover Probability Determination Considering New Direction of Motion

Kumar¹,

Mohan²,

Pathak³

2013

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“…Microcells are more sensitive to the traffic and interference than macrocells due to short-term variations (e.g., traffic and interference variations), medium/long-term alterations (e.g., new buildings), and incremental growth of the radio network (e.g., new BSs) [10]. The number of handoffs per cell is increased by an order of magnitude, and the time available to make a handoff is decreased [11]. Using an umbrella cell is one way to reduce the handoff rate.…”

Section: Microcellsmentioning

confidence: 99%

Handoff in cellular systems

1998

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andoff is a process of transferring a mobile station (MS) from one base station (BS) or channel to another. The channel change due to handoff may be through a time slot, frequency band, codeword, or combination of these for time-division multiple access (TDMA), frequency-division multiple access (FDMA), code-division multiple access (CDMA), or a hybrid scheme, respectively [1]. This article includes four major topics. Topic 1: Deployment Scenarios and Handoff-Topic 1 describes different system deployment scenarios and their constraints on the handoff procedure. Handoff algorithms with a specific set of parameters cannot perform uniformly well in different communication system deployment scenarios since these scenarios are characterized by specific environments. Examples of different system structures include macrocells, microcells, overlays, integrated cellular systems, integrated cordless and cellular systems, and integrated terrestrial and satellite systems. Note that these system structures are expected to coexist in future wireless communication systems and warrant closer study. Topic 2: Resource Management in Cellular Systems-Topic 2 views handoff and other resource management tasks and details handoff-related system performance improvement. Prioritizing handoff is one way to improve handoffrelated system performance. Several handoff prioritization schemes (e.g., guard channels and queuing) are discussed. Handoff represents one of the radio resource management tasks carried out by cellular systems. Some other resource management functions include admission control, channel assignment, and power control. If some of the resource management tasks are treated in an integral manner, better overall performance can be obtained in a global sense by making appropriate trade-offs. Topic 3: Implementation of Handoff-Topic 3 describes how handoff procedure is implemented. The decision making process of handoff may be centralized or decentralized (i.e., the handoff decision may be made at the MS, BS, or mobile switching center, MSC). Different systems use different approaches to execute the process of handoff, and handoff protocols characterize these approaches. Topic 4: Analysis of Handoff Algorithms-Three basic mechanisms have been used to evaluate the performance of handoff algorithms, and these mechanisms-the analytical approach, simulation approach, and emulation approachare described in topic 4.

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Handover criteria for city microcellular radio systems

Cited by 45 publications

References 2 publications

Fast Handoff Scheme for Seamless Multimedia Service in Wireless LAN

Fast Handoff Scheme for Seamless Multimedia Service in Wireless LAN

Soft Handover Probability Determination Considering New Direction of Motion

Handoff in cellular systems

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