Enhanced bandwidth allocation for TCP flows in WiMAX networks

Eun Chan Park, Chunyu Hu, Hwangnam Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper,we propose a bidirectional bandwidth-allocation mechanism to improve TCP performance in the IEEE 802.16 WiMAX networks. According to the IEEE 802.16 standard, when serving a downlink TCP flow, the transmission of the uplink ACK, which is performed over a separate unidirectional connection, incurs additional bandwidth-request/allocation delay. Thus, it increases the round trip time of the downlink TCP flow and results in the decrease of throughput accordingly. First, we derive an analytical model to investigate the effect of the uplink bandwidth-request/allocation delay on the downlink TCP throughput. Second, we propose a simple, yet effective, bidirectional bandwidth-allocation mechanism that couples the bandwidth allocation for uplink and downlink connections by using either proactive bandwidth allocation or piggyback bandwidth request. The proposed scheme reduces unnecessary bandwidth-request delay and the relevant signaling overhead due to proactive allocation; meanwhile, it maintains high efficiency of uplink bandwidth usage by using piggyback request. Moreover, our proposed scheme is quite simple and practical; it can be simply implemented in the base station without requiring any modification in the subscriber stations or resorting to any cross-layer signaling mechanisms. The simulation results ascertain that the proposed approach significantly increases the downlink TCP throughput and the uplink bandwidth efficiency.

Original languageEnglish
Title of host publicationLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering
Pages363-379
Number of pages17
Volume22 LNICST
DOIs
Publication statusPublished - 2009 Dec 1
Event6th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2009 and 3rd International Workshop on Advanced Architectures and Algorithms for Internet Delivery and Applications, AAA-IDEA 2009 - Las Palmas de Gran Canaria, Italy
Duration: 2009 Nov 232009 Nov 25

Publication series

NameLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering
Volume22 LNICST
ISSN (Print)18678211

Other

Other6th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2009 and 3rd International Workshop on Advanced Architectures and Algorithms for Internet Delivery and Applications, AAA-IDEA 2009
CountryItaly
CityLas Palmas de Gran Canaria
Period09/11/2309/11/25

Fingerprint

Frequency allocation
Bandwidth
Throughput
Base stations
Analytical models

Keywords

  • Bandwidth request & allocation
  • IEEE 802.16e MAC
  • TCP performance

ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

Park, E. C., Hu, C., & Kim, H. (2009). Enhanced bandwidth allocation for TCP flows in WiMAX networks. In Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering (Vol. 22 LNICST, pp. 363-379). (Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering; Vol. 22 LNICST). https://doi.org/10.1007/978-3-642-10625-5_23

Enhanced bandwidth allocation for TCP flows in WiMAX networks. / Park, Eun Chan; Hu, Chunyu; Kim, Hwangnam.

Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering. Vol. 22 LNICST 2009. p. 363-379 (Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering; Vol. 22 LNICST).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Park, EC, Hu, C & Kim, H 2009, Enhanced bandwidth allocation for TCP flows in WiMAX networks. in Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering. vol. 22 LNICST, Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, vol. 22 LNICST, pp. 363-379, 6th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2009 and 3rd International Workshop on Advanced Architectures and Algorithms for Internet Delivery and Applications, AAA-IDEA 2009, Las Palmas de Gran Canaria, Italy, 09/11/23. https://doi.org/10.1007/978-3-642-10625-5_23
Park EC, Hu C, Kim H. Enhanced bandwidth allocation for TCP flows in WiMAX networks. In Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering. Vol. 22 LNICST. 2009. p. 363-379. (Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering). https://doi.org/10.1007/978-3-642-10625-5_23
Park, Eun Chan ; Hu, Chunyu ; Kim, Hwangnam. / Enhanced bandwidth allocation for TCP flows in WiMAX networks. Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering. Vol. 22 LNICST 2009. pp. 363-379 (Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering).
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