Proceedings ArticleDOI
Robust header compression for real-time services in cellular networks
Akin Cellatoglu,S.N. Fabri,Stewart T. Worrall,Abdul Hamid Sadka,Ahmet M. Kondoz +4 more
- pp 124-128
Reads0
Chats0
TLDR
Current header compression techniques, CRTP & ROCCO, for multimedia services over IP and examines their performance in mobile channel environments are examined.Abstract:
The 3G mobile-IP networks currently being developed will support end-to-end enhanced real-time multimedia services. End-to-end IP enables very high flexibility for transmission over a mobile network. Conversational services require the use of the Real-time Transport Protocol (RTP), which is typically deployed on top of UDP/IP, to facilitate acceptable quality of service at the receiver. The main drawback of using RTP/UDP/IP is the relatively large overhead imposed by these headers (at least 40/60 bytes in each packet), which leads to significant spectral inefficiency, particularly for low-bit rate speech applications. This paper examines current header compression techniques, CRTP amp; ROCCO, for multimedia services over IP and examines their performance in mobile channel environmentsread more
Citations
More filters
Journal ArticleDOI
VoIP: A comprehensive survey on a promising technology
TL;DR: The survey begins with the merits and demerits of VoIP, followed by the Quality of Service (QoS) requirements that voice imposes and a description of test methods for the assessment of speech quality, and concludes with a discussion on the feasibility of providing VoIP over challenging satellite links.
Patent
Mobile communication method and system
TL;DR: In this paper, the authors proposed a method for wireless communication between a terminal and a base station supporting a real-time packet transfer service mode and reliable packet transfer services mode according to the present invention.
Patent
Method and system for controlling scope of user participation in a communication session
TL;DR: In this paper, a communication controller receives a predefined control signal, such as from one of the conference participants, during the ongoing session, indicating a request to change the scope of participation of at least one user in the session.
Journal ArticleDOI
Voice quality evaluation in wireless packet communication systems: a tutorial and performance results for RHC
TL;DR: An evaluation methodology that combines elementary objective voice quality metrics with a frame synchronization mechanism is introduced that allows networking researchers to conduct effective and accurate quality evaluation of packet voice.
Header compression schemes for wireless internet access
TL;DR: Robust Header Compression (ROHC) performance for Multimedia Services, and more Profiles: TCP, IP–only, UDP–lite, UDP-lite .
References
More filters
Compressing IP/UDP/RTP Headers for Low-Speed Serial Links
S. Casner,Van Jacobson +1 more
TL;DR: This document describes a method for compressing the headers of IP/UDP/RTP datagrams to reduce overhead on low-speed serial links.
Journal ArticleDOI
Concepts, services, and protocols of the new GSM phase 2+ general packet radio service
G. Brasche,Bernhard Walke +1 more
TL;DR: In this paper, a medium access control protocol that conforms to the draft standard proposal for the GPRS air interface is introduced and analyzed, and the simulation model is described and simulation results presented.
Journal ArticleDOI
Real-time voice over packet-switched networks
Thomas J. Kostas,Michael S. Borella,Ikhlaq S. Sidhu,Guido M. Schuster,Jacek A. Grabiec,Jerry J. Mahler +5 more
TL;DR: This work examines possible architectures for voice over IP and discusses measured Internet delay and loss characteristics, and considers the feasibility and expected quality of service of audio applications over IP networks such as the Internet.
RObust Checksum-based header COmpression (ROCCO)
TL;DR: This document describes a more robust header compression scheme that is adaptable to the characteristics of the link over which it is used and also to the properties of the packet streams it compresses.
Realtime Traffic over Cellular Access Networks
Lars Westberg,Morgan Lindquist +1 more
TL;DR: An expansible oil collector and method for isolating oil escaping from an underwater source in the form of a buoyant ring with an anchor ring suspended below the buoyan ring by cables.