Video Communication with QoS Guarantees over HIPERLAN/2
نویسندگان
چکیده
This paper examines the impact of different physical modes on network QoS parameters such as throughput, bit error rate, and retransmission delays. An efficient technique for the transmission of MPEG-2 bit stream over HIPERLAN/2 networks is presented that exploits the hierarchical structure of the MPEG-2 bit stream. We show that for a given video bit stream use of multiple modulation schemes chosen based on the characteristics of underlying video data yields superior throughput and better picture quality in terms of PSNR.
منابع مشابه
IP Convergence Layer with QoS Support for HIPERLAN/2
The project Broadband Radio Access for IP based Networks (BRAIN) is a European project focusing on the provisioning of wireless IP services with fixed network Quality of Service (QoS) support over a HIPERLAN/2 air interface. This paper proposes a generic interface for controlling the QoS features of wireless link layers, discusses the related requirements and design issues, and investigates a p...
متن کاملMPEG-2 video transmission using the HIPERLAN/2 WLAN standard
At present, Wireless Local Area Networks (WLANs) supporting broadband multimedia communication are being developed and standardized around the world in the 5GHz band. Systems such as IEEE802.1 l a and HIPERLAN/2 will provide data rates up to 54 Mbps. Highly compressed data such as video are extremely sensitive to the errors that are commonly encountered in wireless channels. This paper addresse...
متن کاملHIPERLAN type 2 for broadband wireless communication
The key drivers of demand for radio-based broadband access networks are massive growth in wireless and mobile communications, the emergence of multimedia applications, demands for high-speed Internet access, and the deregulation of the telecommunications industry. Present-day wireless telecommunications networks, which are primarily narrowband, are mostly used for circuit-switched voice service...
متن کاملServing IP quality of service with HiperLAN/2
The European project BRAIN investigates system concepts to provide wireless broadband access to the QoS-based Internet. As basis for the BRAIN radio access HiperLAN/2 is considered. In this paper we propose functions enhancing the HiperLAN/2 radio interface to support IP QoS. Thereby our special focus is on the system ability to schedule the various connections dedicated for IP traffic accordin...
متن کاملSurvey on Quality of Service Techniques in Wireless Networks
The advent of portable laptop computers, palmtops, and personal digital assistants with integrated communication capabilities facilitates mobile computing. With an increasing amount of audio and video being sent over public, packet-switched networks, the ability to provide quality of service (QoS) guarantees may be more important in today's networks. Therefore, supporting a high Quality of Serv...
متن کامل