MAC protocols for wideband wireless local access: evolution toward wireless ATM

Anastasi, Giuseppe; Lenzini, Luciano; Mingozzi, Enzo; Hettich, A.; Kramling, A.

doi:10.1109/98.729725

Cited by 48 publications

(16 citation statements)

References 10 publications

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“…It is assumed that only one terminal transmits and one terminal receives (no collisions) and that the medium is never idle [4]. The total throughput is given by: throughput = payload/transmission cycle [4][5][6]. As can be seen from Fig.…”

Section: Throughput Performancementioning

confidence: 99%

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A comparison of the HIPERLAN/2 and IEEE 802.11a wireless LAN standards

et al. 2002

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At present, WLANs supporting broadband multimedia communication are being developed and standardized around the world. Standards include HIPERLAN/2, defined by ETSI BRAN, 802.11a, defined by the IEEE, and HiSWANa defined by MMAC. These systems provide channel adaptive data rates up to 54 Mb/s (in a 20 MHz channel spacing) in the 5 GHz radio band. In this article an overview of the HIPERLAN/2 and 802.11a standards is presented together with software simulated physical layer performance results for each of the defined transmission modes. Furthermore, the differences between these two standards are highlighted (packet size, upper protocol layers etc.), and the effects of these differences on throughput are analyzed and discussed.

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Section: Throughput Performancementioning

confidence: 99%

“…The main differences between the IEEE 802.11a (at 5 GHz) and HIPERLAN/2 standards occur at the MAC layer [1,[5][6][7].…”

Section: Medium Access Controlmentioning

confidence: 99%

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A comparison of the HIPERLAN/2 and IEEE 802.11a wireless LAN standards

et al. 2002

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“…# time slots to client ! in the forward portion of the TDMA frame (using, for instance, the Dynamic Slot Assignment (DSA++) protocol [13]). …”

Section: Tkn-00-05mentioning

confidence: 99%

A prefetching protocol for continuous media streaming in wireless environments

Fitzek

Reisslein

2001

IEEE J. Select. Areas Commun.

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Streaming of continuous media over wireless links is a notoriously difficult problem. This is due to the stringent Quality of Service requirements of continuous media and the unreliability of wireless links. We develop a streaming protocol for the real-time delivery of gprerecorded continuous media from a central base station to multiple mobile clients within a wireless cell. Our protocol prefetches parts of the ongoing continuous media streams into prefetch buffers in the clients. Our protocol prefetches according to a Join-the-Shortest-Queue policy. By exploiting rate adaptation techniques of wireless data packet protocols, the Join-the-Shortest-Queue policy dynamically allocates more transmission capacity to clients with small prefetched reserves. Our protocol uses channel probing to handle the location-dependent, time-varying, and bursty errors of wireless links. We evaluate our prefetching protocol through extensive simulations with VBR MPEG encoded video traces. Our simulations indicate that for bursty VBR video with an average rate of 64 kbit/sec and typical wireless communication conditions our prefetching protocol achieves client starvation probabilities on the order of ¢ ¡ ¤ £ ¦ ¥ and a bandwidth efficiency of 90 % with client buffers of 128 kBytes.

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“…By allocating a so-called container, formed by a number of slots, a base station defines channels like in circuit-switched connections. Thus, the methodologies for circuit-switched network analysis supporting heterogeneous traffic can be applied, while the MAC protocol guarantees that the maximum delay is kept under values that do not affect the performance of applications [5], namely real-time ones.…”

Section: Introductionmentioning

confidence: 99%

Impact of mobility in mobile broadband systems multi-service traffic

Velez

Correia

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH859

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Multi-service traffic engineering will be a key aspect in cellular planning of Mobile Broadband Systems (MBS), allowing to obtain merit functions for optimisation purposes. MBS will serve applications via different service components, with different data rates and average durations, user mobility having impact on the handover failure probability threshold. While in the business city centre and other urban scenarios mobility has no significant effect, it affects the supported traffic in main roads; a reduction of 31 % existing in the 432 channel/cell case, relatively to the situation of absence of mobility.

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MAC protocols for wideband wireless local access: evolution toward wireless ATM

Cited by 48 publications

References 10 publications

A comparison of the HIPERLAN/2 and IEEE 802.11a wireless LAN standards

A comparison of the HIPERLAN/2 and IEEE 802.11a wireless LAN standards

A prefetching protocol for continuous media streaming in wireless environments

Impact of mobility in mobile broadband systems multi-service traffic

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