IP over wireless mobile ATM-guaranteed wireless QoS by HiperLAN/2

Walke, Bernhard; Esseling, N.; Habetha, Jörg; Hettich, A.; Kadelka, A.; Mangold, Stefan; Peetz, J.; Vornefeld, U.

doi:10.1109/5.904504

Cited by 37 publications

(18 citation statements)

References 10 publications

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“…Accordingly, the data rate share of a station with increased network load resulting from many competing stations approaches zero and the network capacity substantially depends on the number of active stations [5]. MAC protocols reserving the channel per packet are known to perform badly under multi-hop operation [10] and tend to be unfair and unable to support QoS.…”

Section: Single Packet Oriented Channel Reservationmentioning

confidence: 99%

“…Since FRNs apply decodeand-forwarding of packets in the MAC layer, improvements to the protocol stack might be neccessary [2,6,7]. 5. Spectral efficiency characterizes a wireless system by the amount of data transmitted per bandwidth unit.…”

Section: Multi-hop Operation Introduced To Broadband Cellular Networkmentioning

confidence: 99%

“…Nodes (FRN) is a new technology first proposed in [5] for a WiMAX like system. It is useful to either increase the cell capacity and minimize the transmit power (and interference) when deploying FRNs inside the cell area covered by a Base Station (BS), or to increase coverage range (thereby reducing cabling costs) by deploying FRNs outside the cell area connecting FRNs to the BS with gain antennas.…”

Section: Multi-hop Operation Introduced To Broadband Cellular Networkmentioning

confidence: 99%

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Efficient Multi-hop Communication in Beyond 3G Mobile Radio Networks

Klein

Einhaus

Federlin

et al. 2007

Wireless Pers Commun

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We propose and evaluate the Frame Descriptor Table (FDT) concept, a method to increase efficiency of signalling resource allocation in frame based Medium Access Control (MAC) protocols. MAC protocols for Beyond 3G mobile radio networks, also known as IMT-Advanced systems, will operate on high data rate channels resulting in short packet transmission duration. The scheduling overhead per packet must also be reduced, correspondingly. The new concept is suitable also to reduce the MAC control overhead spent per hop in mobile radio systems with Relay Enhanced Cells (REC)s that apply multi-hop communication by dynamically allocating TDMA channels. This paper's focus is on performance evaluation of multi-hop scenarios using analytical models and event-driven stochastic simulations. It is shown that FDT based MAC protocols are suited to increase throughput and reduce delay in REC based cellular radio systems.Keywords Relay enhanced cell · Multi-hop · MAC protocol · Analysis · Simulation · Frame descriptor table · WINNER · Quality of service · Beyond 3G · IMT-advanced · IEEE 802.11e · IEEE 802.16a · HiperLAN/2 AbbreviationsACH Access feedback channel B3G Beyond 3rd generation BCH Broadcast channel BS Base station CDMA Code division multiple access DECT Digital enhanced cordless telecommunications DL Downlink EXRR Exhaustive round robin

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Section: Single Packet Oriented Channel Reservationmentioning

confidence: 99%

Section: Multi-hop Operation Introduced To Broadband Cellular Networkmentioning

confidence: 99%

Section: Multi-hop Operation Introduced To Broadband Cellular Networkmentioning

confidence: 99%

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Efficient Multi-hop Communication in Beyond 3G Mobile Radio Networks

Klein

Einhaus

Federlin

et al. 2007

Wireless Pers Commun

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“…The best-effort data service is supported by all WSTAs and is modeled by sources generating packets having exponentially distributed inter-arrival times. The packet-length distribution is taken from a real LAN trace, with a mean packet length of 501 bytes [26]. An up/downlink ratio of 20 kbps/ 100 kbps has been chosen to emulate the asymmetrical behavior of Web-browsing-like services.…”

Section: Infrastructure Wireless Lan With Realistic Traffic Modelsmentioning

confidence: 99%

Dynamic Data Rate and Transmit Power Adjustment in IEEE 802.11 Wireless LANs

Chevillat

Jelitto

Truong

2005

Int J Wireless Inf Networks

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In this paper a novel link adaptation algorithm is proposed that is capable of adjusting the transmit power level and the data rate jointly to the radio channel conditions. The proposed method relies solely on link quality information available at the transmitter by employing the reception or non-reception of the acknowledgment frames as a measure of the channel quality with respect to the power level and data rate. The method is fully compatible with the 802.11 wireless LAN standard. In contrast to many other proposals, it neither relies on the RTS/CTS protocol nor requires a feedback channel to transmit link-quality estimates from the receiver to the transmitter. Different strategies for optimizing the data rate and power level are given. These depend on the scenarios considered, the number of active stations, and the service requirements. The two main strategies are either to drive the system towards the highest possible data rate and adjust the rate and power levels accordingly (''high-performance'' mode) or to focus on power saving, possibly trading this for other performance criteria such as throughput or delay performance (''low-power'' mode). Other special cases, such as power or rate only adaptation, are also discussed. It can be shown that in most cases the best choice for achieving low transfer times, maximizing throughput, and alleviating the hidden terminal problem is to transmit at the highest possible rates and with high power levels. This ''highperformance'' mode of operation also minimizes the transmission times, which in turn maximizes the time for putting idling components into a sleep mode, thereby minimizing the overall power consumption.

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“…In order to decrease per-unit cost, sensor nodes usually employ single channel radios, with a fixed modulation scheme. Those constraints hinder the use of dynamic selection of frequencies and modulation, detection of low-interference channels and frequency hopping schemes [24,17]. Natural disasters -Sensor nodes may be deployed outdoors or in disaster locations, thus being exposed to landslides, floods and earthquakes.…”

Section: Failure In Wsnsmentioning

confidence: 99%