Uplink performance of the IEEE802.16 medium access control (MAC) layer protocol

Bhandari, B. N.; Kumar, Rajeev; Maskara, S.L.

doi:10.1109/icpwc.2005.1431290

Cited by 8 publications

(12 citation statements)

References 3 publications

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“…Several papers have been published focusing on the random access phase for bandwidth requests in OFDM systems [7,1,6,2]. In [7,1], it is shown that the backoff window should be set to the number of transmission opportunities per frame or to a multiple of these transmission opportunities.…”

Section: Introductionmentioning

confidence: 99%

“…In [7,1], it is shown that the backoff window should be set to the number of transmission opportunities per frame or to a multiple of these transmission opportunities. A transmission opportunity is the time it takes to submit one bandwidth request.…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, we obtain the probability that a transmitted ranging code is not correctly detected as (1) and the probability that a not transmitted ranging code is erroneously detected as…”

Section: Introductionmentioning

confidence: 99%

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Comparative Study of the IEEE 802.16 Random Access Mechanisms

Staehle

Pries

2007

The 2007 International Conference on Next Generation Mobile Applications, Services and Technologies (NGMAST 2007)

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The WiMAX technology based on the IEEE802.16 standard is currently the most prospective candidate for broadband wireless access networks. One of the key issues is the design of the MAC layer, in particular the multiple access scheme. The IEEE 802.16 standard specifies different scheduling services with individual mechanisms for accessing the channel on the uplink. The non-real-time polling service and the best-effort service mainly rely on a contention mechanism to submit bandwidth requests to the base station. These two services are currently used for all types of traffic with unknown characteristics, i.e. typically all traffic except for some special VoIP connection with known codec. In this paper, we evaluate and compare the performance of the contention mechanisms for fixed and mobile WiMAX.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative Study of the IEEE 802.16 Random Access Mechanisms

Staehle

Pries

2007

The 2007 International Conference on Next Generation Mobile Applications, Services and Technologies (NGMAST 2007)

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“…In P2MP type of operation, the connection between BS and SS is established based on Request/Grant mechanism. The frame structure shown in Figure 2 best explains the operation of MAC layer [6]. Data units between the BS and SSs are exchanged in units of fixed-length frames.…”

Section: 1overview Of 80216 Phy and Mac Layersmentioning

confidence: 99%

Evaluation And Enhancement Of Performance Metrics For Ir And Bwr In Mac 802.16

Bhakthavathsalam¹

2012

IJWMN

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In the IEEE 802.16 standard, Initial Ranging (IR) is defined as the mechanism of acquiring the correct timing offsets and power adjustments such that the Subscriber Station (SS) is co-located with the Base Station (BS). Bandwidth Request (BWR) is the process by which the communication is established between BS and SS requesting the uplink bandwidth allocation. In this, we evaluate the performance of these two schemes based on the metrics of delay and throughput. Then we enhance their performance by incorporating circularity. Circularity is a paradigm that allows the identification of specific groups of packets or events. Using this, we introduce delay control and backoff window control in the case of IR and selective dropping of BWR packets. This new paradigm reduces the collisions among request packetsand thereby, improves both these mechanisms. The evaluation and enhancement are performed through extensive simulated studies.

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“…In recent years, several performance analyses of systems based on IEEE 802.16 architecture [4] [5] [6] and proposals of scheduling algorithms [7] [8] [9] [10] [11] were published. Among these, Sengupta et al [4] explain how MAC PDUs length impacts on system performance; packing and fragmentation functionalities are only exploited in order to form the desired sized MAC PDUs.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of an Efficient Packet-Based IEEE 802.16 MAC Supporting Adaptive Modulation and Coding

Settembre

Puleri

Garritano

et al.

2006 International Symposium on Computer Networks

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The challenge for broadband fixed wireless access (BFWA) systems, which represent an attractive solution for broadband access in the last mile and for wireless backhauling applications in the "middle mile", lies in providing high data rates and Quality of Service (QoS). Such requirements mainly derive from the need to provide new bandwidth consuming multimedia services and applications, efficient handling of IP traffic, effective use of the limited radio spectrum and a greater backhaul capacity to support the increased number of users per cell site.IEEE 802.16 family of standards and its associated consortium WiMAX are gaining more and more interest in the telecommunication areas as broadband fixed wireless access solution with possible extension in nomadic and mobile area. Its main leverages are an efficient handling of IP traffic, the support of channel adaptivity and advanced QoS management.This paper aims at defining a new packet-based scheduling strategy for an IEEE 802.16 system supporting variable length MAC Protocol Data Units (PDUs) and adaptive coding and modulation while fulfilling QoS requirements. A performance analysis of the proposed scheduler is presented and discussed in terms of packet transfer delay, MAC overhead and average throughput.

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Uplink performance of the IEEE802.16 medium access control (MAC) layer protocol

Cited by 8 publications

References 3 publications

Comparative Study of the IEEE 802.16 Random Access Mechanisms

Comparative Study of the IEEE 802.16 Random Access Mechanisms

Evaluation And Enhancement Of Performance Metrics For Ir And Bwr In Mac 802.16

Performance Analysis of an Efficient Packet-Based IEEE 802.16 MAC Supporting Adaptive Modulation and Coding

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