DocumentCode :
778660
Title :
An adaptive measured-based preassignment scheme with connection-level QoS support for mobile networks
Author :
Luo, Xiaoyuan ; Li, Bo ; Thng, Ian Li-Jin ; Lin, Yi-Bing ; Chlamtac, I.
Author_Institution :
Motorola Electron. PTE Ltd., Singapore, Singapore
Volume :
1
Issue :
3
fYear :
2002
fDate :
7/1/2002 12:00:00 AM
Firstpage :
521
Lastpage :
530
Abstract :
This paper presents a new adaptive bandwidth allocation scheme to prevent handoff failure in wireless cellular networks, known as the measurement-based preassignment (MPr) technique. This technique is particularly useful in micro/pico cellular networks which offers quality-of-service (QoS) guarantee against call dropping. The proposed MPr scheme distinguishes itself from the well-known guarded channel (GC) based schemes in that it allows the handoff calls to utilize a prereserved channel pool before competing for the shared channels with new call arrivals. The key advantage of the proposed MPr scheme is that it enables easy derivation of the number of channels that needs to be reserved for handoff based on a predetermined handoff dropping probability, without the need for solving the often complex Markov chain required in GC schemes, thus, making the proposed MPr scheme simple and efficient for implementation. This is essential in handling multiple traffic types with potentially different QoS requirements. In addition, the MPr scheme is adaptive in that it can dynamically adjust the number of reserved channels for the handoff according to the periodical measurement of the traffic status within a local cell, thus completely eliminating the signaling overhead for status information exchange among cells mandated in most existing channel allocation schemes. Numerical results and comparisons are given to illustrate the tradeoff
Keywords :
Markov processes; bandwidth allocation; microcellular radio; picocellular radio; probability; quality of service; radio networks; telecommunication traffic; Markov chain; QoS guarantee; adaptive bandwidth allocation; adaptive measured-based preassignment; call dropping; channel allocation; connection-level QoS support; guarded channel; handoff calls; handoff dropping probability; handoff failure prevention; microcellular networks; mobile networks; multiple traffic types; new call arrivals; picocellular networks; quality-of-service guarantee; shared channels; traffic status measurement; wireless cellular networks; Admission control; Channel allocation; Communication system traffic control; Land mobile radio cellular systems; Mobile communication; Multimedia systems; Next generation networking; Quality of service; Wireless communication; Wireless networks;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/TWC.2002.800550
Filename :
1017534
Link To Document :
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