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Efficiency Gain for RoHC Compressor Implementations with Dynamic Configuration 84

Efficiency Gain for RoHC Compressor Implementations with Dyn...

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84th IEEE Vehicular Technology Conference (VTC-Fall)

作者： Tomoskozi, Mate Seeling, Patrick ekler, peter Fitzek, Frank H. P. Aalborg Univ Dept Elect Syst Aalborg Denmark Tech Univ Dresden Commun Networks Grp Dresden Germany Cent Michigan Univ Dept Comp Sci Mt Pleasant MI 48859 USA Budapest Univ Technol & Econ Dept Automat & Appl Informat Budapest Hungary

ISBN: (纸本)9781509017010

Modern cellular networks utilising the long-term evolution (LTE) and the coming 5G set of standards face an ever-increasing demand for low-latency mobile data from connected devices. Header compression is employed to minimise the overhead for IP-based cellular network traffic, thereby decreasing the overall bandwidth usage and, subsequently, transmission delays. Since Robust Header Compression, among others, is primarily designed for the compression of live audio transmissions on endpoint devices, it performs best if certain fields, like the IP ID and RTP Timestamp, stay constant or change at a predetermined rate. Moreover, the compressor expects the uncompressed stream to be loss-free as well, which might not be the case in general scenarios. We employ machine learning approaches for the prediction of Robust Header Compression version 1 ' s and version 2 ' s compression utility under various loss rates and header field dynamics. We analyse how the compressions react to different fluctuations in the headers and choose the compressor configuration which maximises utility. We show that the appropriate choice of compressor repetition configuration increases the overall utility under dynamic channel conditions, such as in the case of remote steering and various IoT applications, and finding the optimal configuration could produce significant benefits, like 1.2 speed-up in a fully utilised network.

关键词： Robust header compression Mobile multimedia Cellular networks Bandwidth savings Linear regression Machine learning

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Unidirectional Robust Header Compression for Reliable Low Latency Mesh Networks

Unidirectional Robust Header Compression for Reliable Low La...

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IEEE International Conference on Communications (IEEE ICC)

作者： Toemoeskoezi, Mate Lucani, Daniel Fitzek, Frank H. P. ekler, peter Tech Univ Dresden Commun Networks Grp Dresden Germany Aarhus Univ Dept Engn Commun Syst Aarhus Denmark Budapest Univ Technol & Econ Dept Automat & Appl Informat Budapest Hungary

ISBN: (纸本)9781538680889

Next generation use-cases of mesh networks, such as connected vehicles and industrial devices, require low latency transmissions while fulfilling high reliability constraints. However, they also suffer from an increased protocol encapsulation overhead when handling a large number of messages with small payloads. A solution to this problem is to employ header compression algorithms in order to reduce the size of the individual protocol headers. Unfortunately, the current state-of-the-art header compression schemes cannot be readily applied to network topologies that contain a combination of multiplehops and paths, as the compression only works favourably on a peer-to-peer, single-hop basis. With the unique combination of network coding and header compression one can always utilise unidirectional compression with maximum gain. In this paper we introduce and evaluate, for the first time, an integrated network coded header compression solution, which we call unidirectional Robust Header Compression (uRoHC). We show that one can - proportionally to the logical payload size - double the payload delivery efficiency compared to standard IPv4 and that we achieve results 10-15 % better than that of RoHCv2 for streams containing 33 bytes of payload.

关键词： Robust Header Compression Network Coding RoHCv2 uRoHC Mesh Network Latency Reliability

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Applying Robust Header Compression version 2 for UDP and RTP Broadcasting with Field Constraints 85

Applying Robust Header Compression version 2 for UDP and RTP...

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IEEE 85th Vehicular Technology Conference (VTC Spring)

作者： Tomoskozi, Mate Seeling, Patrick ekler, peter Fitzek, Frank H. P. Acticom GmbH Berlin Germany Aalborg Univ Dept Elect Syst Aalborg Denmark Tech Univ Dresden Commun Networks Grp Dresden Germany Cent Michigan Univ Dept Comp Sci Mt Pleasant MI 48859 USA Budapest Univ Technol & Econ Dept Automat & Appl Informat Budapest Hungary

ISBN: (纸本)9781509059324

Next generation applications of wireless IP networks face an ever increasing demand of real-time dissemination of sensory and similar data to nearby devices. During situations when the transmission capabilities become scarce due to overused bandwidth, such as vehicular and various IoT use-cases, limiting the number of transmitted bytes over the wireless interfaces could ease the network load considerably. One of the main potential approaches for reducing the traffic in such scenarios is broadcasting, which could be even more efficient when paired with compression approaches, such as header compression. Normally header compression is employed to minimise the overhead of IP-based cellular traffic between two directly connected peers. However, in broadcasting scenarios, the compression has to balance the trade-off between servicing the least reliable channels (i.e., robustness to losses) and performing at peak compression rates (generating smaller packet headers). In order to circumvent these limitations, we propose a constraint on various IP and RTP fields when employing the industry-standard Robust Header Compression version 2 (which was designed for direct links) in a broadcast scenario without modifications of the underlying mechanisms, i.e., with full RFC compliance. With this approach the compression becomes impervious to packet losses up to 50% and for UDP profile compression with IPv6 it is practically unaffected by the link quality. In turn the compression retains at least 50 % efficiency but can be as high as 90 %.

关键词： Robust header compression Mobile multimedia Cellular networks Bandwidth savings Broadcasting V2V IoT

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Demonstration of a P2P assisted video streaming with WebRTC and Network Coding 14

Demonstration of a P2P assisted video streaming with WebRTC ...

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14th IEEE Annual Consumer Communications and Networking Conference (CCNC)

作者： Braun, Patrik J. ekler, peter Fitzek, Frank H. P. Budapest Univ Technol & Econ Dept Automat & Appl Informat Budapest Hungary Tech Univ Dresden Deutsch Telekom Chair Commun Networks Dresden Germany

ISBN: (纸本)9781509061969

Video on Demand (VoD) streaming constitutes a continuously increasing proportion of the global IP traffic. Conventional streaming approaches use a client-server topology, where one server or a group of servers serve all the clients. The main drawbacks of this technology is poor scalability. An alternative is the well known Peer-to-Peer (P2P) network topology which addresses this problem. However, for browser-based application, there is no standard method for distributed data dissemination. We present an application that uses WebRTC to establish direct browser to browser connections. We have designed two protocols WebPeer and CodedWebPeer for browser based P2P streaming. WebPeer is a conventional P2P protocol, while CodedWebPeer is a network coding enhanced P2P protocol. With our system, we demonstrate that using WebRTC P2P assisted VOD streaming can be accomplished. Furthermore, it outperforms the conventional client-server setup in terms of throughput by 70%, for the investigated scenario. In addition, by applying network coding, the performance of the network improves even further.

关键词： Protocols Peer-to-peer computing Servers Browsers Network coding WebRTC Network topology

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Performance Evaluation and Implementation of IP and Robust Header Compression Schemes for TCP and UDP Traffic in the Wireless Context 4

Performance Evaluation and Implementation of IP and Robust H...

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Eastern European Regional Conference on the Engineering of Computer-Based Systems ECBS-EERC

作者： Tomoskozi, Mate Seeling, Patrick ekler, peter Fitzek, Frank H. P. Acticom GmbH Berlin Germany Aalborg Univ Dept Elect Syst Aalborg Denmark Cent Michigan Univ Dept Comp Sci Mt Pleasant MI 48859 USA Budapest Univ Technol & Econ Dept Automat & Appl Informat Budapest Hungary

ISBN: (纸本)9781467379670

Modern cellular networks utilizing the long-term evolution (LTE) set of standards face an ever-increasing demand for mobile data from connected devices and header compression is employed to minimize the overhead for IP-based cellular network traffic. In this paper, we evaluate the three implementations of header compressions used by these networks with respect to their potential throughput increase and complexity for different mobile service scenarios over wireless IP networks. Specifically, we consider header compression as defined by (i) IP Header Compression (RFC 2507), (ii) Robust Header Compression version 1 (RFC 3095), and (iii) the recently updated Robust Header Compression version 2 (RFC 5225) with TCP/IP profile (RFC 6846). The novelty of this paper is the presentation of the performance evaluation of IP Header Compression for UDP and TCP, as well as a comparison between the two compression methods. Our findings show that all implementations have great potential for saving bandwidth in IP-based wireless networks, even under varying channel conditions. While the RoHC versions generally provide more reliable results than IPHC, we find that on a unidirectional channel, IPHC could perform better.

关键词： Robust header compression Mobile multimedia Cellular networks Bandwidth savings

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Robust Header Compression Version 2 Power Consumption on Android Devices via Tunnelling

Robust Header Compression Version 2 Power Consumption on And...

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IEEE International Conference on Communications (ICC) / Wireless Communications Symposium / 3rd Workshop on Optical Wireless Communications (OWC)

ISBN: (纸本)9781509015252

Next generation use-cases of wireless IP networks, including especially the Massive Machine Type Communications and IoT applications for the distribution of sensory and similar data will require the capability to handle large number of connections while maintaining a low-power footprint in order to function efficiently during long-term deployments. The reduction of the packetisation overhead resulting from the adaptation of header compression could potentially decrease the battery usage of network heavy applications via diminished wireless interface activity. Normally header compression is employed to minimise the overhead of IP-based cellular traffic between two connected peers. This paper presents for the first time comparative power consumption measurements for Robust Header Compression version 2 (RoHCv2) using WiFi and LTE. We find that the adoption of header compression on modern mobile devices will generally not result in increased power consumption based on the extra complexity added by the execution of the algorithms. We also show that the usage of RoHCv2 can potentially even decrease the battery drain on average by about 0.05 W when payloads are small.

关键词： Robust Header Compression Cellular networks Bandwidth savings IoT Power consumption Energy efficiency

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Regression Model Building and Efficiency Prediction of RoHCv2 Compressor Implementations for VoIP 59

Regression Model Building and Efficiency Prediction of RoHCv...

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59th Annual IEEE Global Communications Conference (IEEE GLOBECOM) / Conference on Network Coding and Applications (NetCod)

作者： Toemoeskoezi, Mate Seeling, Patrick ekler, peter Fitzek, Frank H. P. Acticom GmbH Berlin Germany Aalborg Univ Dept Elect Syst Aalborg Denmark Tech Univ Dresden Commun Networks Grp Dresden Germany Cent Michigan Univ Dept Comp Sci Mt Pleasant MI 48859 USA Budapest Univ Technol & Econ Dept Automat & Appl Informat Budapest Hungary

ISBN: (纸本)9781509013289

Modern cellular networks utilising the long-term evolution (LTE) and the coming 5G set of standards face an ever-increasing demand for low-latency mobile data from connected devices. Header compression is employed to minimise the overhead for IP-based cellular network traffic, thereby decreasing the overall bandwidth usage and, subsequently, transmission delays. We employ machine learning approaches for the prediction of Robust Header Compression version 2' s (RFC 5225) compression utility for VoIP transmissions, which enables the compression to dynamically adapt to varying channel conditions. We evaluate the prediction models employing.. 2 and mean square error scores next to complexity (number of coefficients) based on an RTP specific training data set and a separately captured live VoIP audio call. We find that the proposed weighted Ridge regression model explains about 70 % of the training data and 72 % of a separate VoIP transmission's utility. This approach outperforms the Ridge and first-order Bayesian regressions by up to 50 % and the second and third order regressions utilising polynomial basis functions by up to 20 %, making it well-suited for utility estimation.

关键词： Robust header compression Mobile multimedia Cellular networks Bandwidth savings Linear regression Machine learning

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ICT IN ROAD VEHICLES - The VehicleICT Platform

ICT IN ROAD VEHICLES - The <i>VehicleICT</i> Platform

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International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS)

作者： Lengyel, Laszlo ekler, peter Ujj, Tamas Balogh, Tamas Charaf, Hassan Szalay, Zsolt Jereb, Laszlo Budapest Univ Technol & Econ Magyar Tudosok Krt 2 H-1117 Budapest Hungary

ISBN: (纸本)9789633131428

Vehicles are not just a means of transportation anymore, but they are also moving entities that collect and transmit a great amount of local data, captured by sensors from the internals of the vehicle and from its environment as well. The consumers of this information include the passengers, especially the driver, and the environment, i.e. other vehicles, intelligent gates, centralized storage systems and data processing solutions. In order to maximize the value provided to the passengers, other vehicles and also the urban society, vehicle services utilize the local nature of the data. This paper discusses the VehicleICT platform, which is a proof of concept implementation, developed by a research institute and an automotive industrial partner.

关键词： vehicle ICT ICT in road vehicle ICT platform for road vehicles ODB-II CAN bus mobile big data management

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Reliable Base Proposal for Header Compression 90

Reliable Base Proposal for Header Compression

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90th IEEE Vehicular Technology Conference (IEEE VTC-Fall)

作者： Tomoskozi, Mate Lucani, Daniel Fitzek, Frank H. P. ekler, peter Tech Univ Dresden Commun Networks Grp Dresden Germany Aarhus Univ Dept Engn Commun Syst Aarhus Denmark Budapest Univ Technol & Econ Dept Automat & Appl Informat Budapest Hungary

ISBN: (纸本)9781728112206

The upcoming wireless network generation has put a large emphasis on the fulfilment of high reliability constraints. Nonetheless, the trade-off between these and other network aspects, mainly delay and bandwidth, is a constant optimisational question and a tough challenge. The various employed protocols add certain encapsulation overheads, which albeit necessary, however could potentially be excessive, such as in the case of various IoT, and similar applications with small payloads. Header compression aims to reduce these headers, but a general problem still plagues the standards since their introduction to loss-prone wireless networks, which is the issue of lost context (re)initialisation packets that can make the compression upstart and the transmission of major changes unreliable, slow and costly. In this paper we propose a solution that circumvents some concerns of traditional header compression context initialisation by the employment of network coding, which we call the reliable base proposal technique. This provides a finely tunable method for balancing reliability and delay of decompression with bandwidth gain. Our results show that both compression gain and reliability can be increased over the previous standards.

关键词： Robust Header Compression Compression Context Network Coding RoHCv2 Latency Reliability

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On the Performance Boost for Peer To Peer WebRTC-based Video Streaming with Network Coding

On the Performance Boost for Peer To Peer WebRTC-based Video...

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IEEE International Conference on Communications (ICC) / Wireless Communications Symposium / 3rd Workshop on Optical Wireless Communications (OWC)

作者： Braun, Patrik J. Sipos, Marton ekler, peter Fitzek, Frank H. P. Budapest Univ Technol & Econ Dept Automat & Appl Informat Budapest Hungary Tech Univ Dresden Deutsch Telekom Chair Commun Networks Dresden Germany

ISBN: (纸本)9781467389990

Video on Demand (VoD) streaming makes up an increasing portion of global IP traffic. Traditionally, data is served by content providers directly, putting a huge network load on the servers. We propose using our WebRTC-based protocols WebPeer and CodedWebPeer to create a P2P-assisted VoD streaming system with network coding. We introduce two metrics: network health to measure overall data saturation and network stability to show if the peers in the network are able to serve each other without the help of the server. We have implemented a testbed to emulate real-life network scenarios that includes a probabilistic model of peer behavior. We show through measurements that by applying network coding, network health is increased by up to 100% without changing the cache size or number of peers. Furthermore, network stability is achieved using up to half the cache compared to the uncoded approach, without increasing the servers load. Finally, to validate the scalability of our solution, we tested our protocols in a network with more than 100 tablets to deliver smooth video playback.

关键词： Protocols Servers Peer-to-peer computing Measurement Software Streaming media Network coding

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