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This revision specifies technical corrections and clarifications to IEEE Std 802.11 for wireless local area networks (WLANS) as well as enhancements to the existing medium access control (MAC) and physical layer (PHY) functions. It also incorporates Amendments 1 to 10 published in 2008 to 2011.
The following topics are dealt with: wireless communications and networking WCN/WLAN/WiMAX; optical communications and networking OCN; mobile communications/wireless/mobility; mobile ad-hoc and sensor mesh networks; network management and services; UWD/RFID/OFDM and Nano/Bio, and; quality of service, traffic management and dynamic spectrum access networks.
This paper considers optimizing the utilization of radio resources in a heterogeneous networks consisting of a WLAN and a CDMA network. We propose a joint admission control scheme for multimedia traffic that exploits vertical handoffs as an effective tool to enhance radio resource management while guaranteeing handoff users' QoS requirements. The network resources utilized by the vertical handoff...
In the tight-coupled next generation heterogeneous wireless networks, a user with a multi-interface terminal may have network access for different service providers using various technologies. Radio network selection (RNS) is the mechanism which decides how to select the most suitable access network (AN) based on the discovered accesses, QoS constraints, operator policies, user preferences and available...
Multimedia applications have been the key driving force in converging fixed, mobile and IP networks. A major hurdle in the realisation of this convergence is obtaining Quality of Service from a heterogeneous, best-effort service network. Interactive voice requires strict bounds on delay, jitter and packet losses, video adds significant bandwidth requirements to the network, while Internet only makes...
This paper describes properties of a network management concept designed in the scope of the project ldquoHOMEPLANErdquo. Following to the projectpsilas vision, the future home network has a strong focus on multimedia applications. For the userspsila convenience, media transfers are realized based on IEEE 802.11 WLAN. To ensure high quality of service different enhancement concepts have been developed...
The content delivery chain encompasses content creation, delivery and consumption. To support this, the content has to be identified, described, generated, delivered, managed and protected. Furthermore, content/services of different format will be distributed over heterogeneous networks and delivered on a variety of user terminals. The scarce resource of bandwidth needs to be dynamically managed and...
This paper considers a heterogeneous radio access network scenario where different radio access technologies (RATs) are jointly managed. Different RAT selection algorithms are evaluated for both downlink and uplink transmissions, where the basic strategies of the algorithms are based on operator QoS policies. The total perceived system throughput gain from common radio resource management (CRRM) compared...
The following topics are dealt with: VLSI; OFDM; embedded systems; filters; MIMO; cellular and integrated systems; media processing; Internet; image processing; network routing; QoS and resource allocation; network management; channel modelling and equalization; ad hoc networks; communication signal processing; WSN; channel estimation; WLAN and WWAN; coding and detection; security; UWB; cognitive...
Despite significant advances in parts of the physical layer, available WLAN systems still cannot offer wired equivalent bandwidth. In this paper we propose a novel concept, called wireless self-organizing backbone mesh network (WiSoNet), for a wireless network infrastructure as a backbone and describe its long-term potential. WiSoNet combines two major IEEE standards - IEEE 802.11 (WLAN) and IEEE...
Mobile nodes with unidirectional network interfaces are not considered as a special case in the standardisation of mobile IPv6. For the integration of unidirectional broadcast technologies, such as DVB-H and DVB-T, into mobile IPv6 environment with heterogeneous access networks, there is a need to support the handover and QoS requirements of mobile services using unidirectional access networks. In...
A major challenge of the heterogeneous wireless networks is how to jointly utilize the resources of different radio access technologies (RATs) in an efficient manner while simultaneously achieving the desired multi-service quality of service (QoS) and minimizing the service cost. To meet the challenge, this paper proposes an adaptive common radio resource management (CRRM) scheme in the context of...
In this paper it will be shown how the fuzzy neural methodology can be used to develop an innovative mechanism to perform joint radio resource management (JRRM) in the context of heterogeneous radio access networks (RANs). In particular, an algorithm able to ensure certain quality of service (QoS) constraints in a multi-cell scenario deployment with three different radio access technologies (RATs),...
The seamless internetworking among various communication networks is in demand to provide anywhere, anytime connectivity with high data rate and enhanced service quality. In this paper, we propose a novel internetworking architecture between WLAN and UMTS cellular networks, hybrid coupling with radio access system (HCRAS), based on IPv6, mobile IP, and fast hand off techniques. Inheriting loose coupling...
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