Lower Layer Guidelines for Robust RTP/UDP/IP Header Compression

Svanbro, Krister

doi:10.17487/rfc3409

Cited by 7 publications

(6 citation statements)

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“…The evaluation of a spoken dialogue system can be classified as objective and subjective as indicated by Danieli and Gerbino [17], Hirschman and Pao [18], and Walker et al [19]. Objective metrics can be calculated without human judgment, and in many cases can be logged by the SDS so that they can be calculated automatically.…”

Section: Experimental Results For the Msds Evaluationmentioning

confidence: 99%

“…Limitations imposed by unimodal treatment of driving features could be overcome by using multiple modalities or data fusion as it was recently done in a number biometric systems (Chapter 16 in this book and [10,17]. Preliminary findings from such systems, known as multimodal biometric systems indicate higher performance and more reliable due to the presence of multiple, independent pieces of evidence.…”

Section: Integration Of Multi-sensor Datamentioning

confidence: 99%

“…Most of the decision fusion schemes existing in the literature [15,17] vary actually in the way they interpret Equation (6). Most of the decision fusion schemes existing in the literature [15,17] vary actually in the way they interpret Equation (6).…”

Section: Multimodal Decision Fusionmentioning

confidence: 99%

See 2 more Smart Citations

DSP for In-Vehicle and Mobile Systems

Abut¹,

Hansen²,

Takeda³

2005

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Section: Experimental Results For the Msds Evaluationmentioning

confidence: 99%

Section: Integration Of Multi-sensor Datamentioning

confidence: 99%

See 1 more Smart Citation

DSP for In-Vehicle and Mobile Systems

Abut¹,

Hansen²,

Takeda³

2005

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“…The ITU-T G.711 speech codec [11] has been selected to model good-quality voice calls, with a 64 kbit/s bit rate, 160 byte-long packets generated every 20 ms during a talkspurt, and no packets generated in the silence periods. The RTP/UDP/IP header overhead was considered, but as the packet length is very limited, a header compression was assumed, which allows to compress the 40 bytes of the RTP/UDP/IP header into 4 bytes [12]. The talkspurt and silence duration times are exponentially distributed with a mean value of 1 s and 1.35 s, respectively [10].…”

Section: Vt and Dt Access Schemementioning

confidence: 99%

Performance analysis of a multiple access protocol for voice and data support in multiuser broadband wireless LANs

2006

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Wireless Local Area Networks (WLANs) is one of the most promising access technologies for the upcoming fourth-generation wireless communication systems. In the last few years, several research efforts have been devoted to investigate possible multiple access schemes capable of supporting real-time traffic as well as best-effort data transmissions. In particular, the use of suitable transmission schemes allows not only to achieve higher data-rates, but also to perform resource allocation in order to guarantee specific service requirements. In this paper we propose a medium access control (MAC) scheme for a WLAN supporting realtime (voice) and best-effort (data) services, based on Orthogonal Frequency Division Multiplexing (OFDM) technique. A suitable analytical approach is proposed in order to derive the performance of the proposed MAC scheme. In particular, it is shown in the paper that a high overall network capacity in terms of simultaneously active users is achieved by effectively exploiting the multiuser capabilities offered by OFDM, together with a proper service differentiation.

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“…During the talk spurts, the voice signals are encoded with the ITU-T G.711 speech codec [28], which generates 160-bytelong packets every 20 ms, corresponding to a constant bit-rate (CBR) of 64 kbps. Furthermore, a header compression has been assumed that reduces the 40 bytes of the RTP/UDP/IP header to 4 bytes [29].…”

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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Lower Layer Guidelines for Robust RTP/UDP/IP Header Compression

Cited by 7 publications

References 0 publications

DSP for In-Vehicle and Mobile Systems

DSP for In-Vehicle and Mobile Systems

Performance analysis of a multiple access protocol for voice and data support in multiuser broadband wireless LANs

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

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