This paper investigates a modification of the IEEE 802.11 MAC protocol and additional mechanisms necessary to support Differentiated Services. Our contribution is the development of distributed mechanisms for service differentiation, radio monitoring, and admission control. Service differentiation is based on the distributed coordination function (DCF). Originally used purely for best-effort da...

This paper presents an advance router design using enhanced buffer. The design provides advantages of both buffer and bufferless network for that two cross bar switches are used. The concept of virtual channel (VC) is eliminated from the previous design by using an efficient flow-control scheme that uses the storage already present in pipelined channels in place of explicit input virtual channe...

This paper proposes a novel iterative multiple-input multiple-output (MIMO) receiver for orthogonal frequency division multiplexing (OFDM) systems, named as an “iterative MIMO receiver employing virtual channels with a Turbo decoder.” The proposed MIMO receiver comprises a MIMO detector with virtual channel detection and a Turbo decoder, between which signals are exchanged iteratively. This pap...

Moving computing into the “Cloud” makes computer processing much more convenient for users but also presents them with new security problems about safety and reliability. While accessing the data we follow a data policy known by third party. They can use our data. So to overcome this problem we purpose a new scheme that makes use of the covert channel technique to secure the data being communic...

The members of the Technical Program Committee and the reviewers deserve special thanks. They have worked according to a tight deadline and have provided us with high quality reviews, which helped us greatly in the selection process. We would also like to thank the LCN 2005 Organising Committee that guided the direction of the workshop and helped us in the time-consuming process of paper regist...

An important open problem in wormhole routing has been to find a necessary and sufficient condition for deadlock-free adaptive routing. Recently, Duato has solved this problem for a restricted class of adaptive routing algorithms. In this paper, a necessary and sufficient condition is proposed that can be used for any adaptive or nonadaptive routing algorithm for wormhole routing, as long as on...

This paper examines whether customer use of virtual channels varies with the type of service activities (e.g. information search, transactions) they engage in. Based on data from a multichannel bank, we first investigate the impact of customer distance to the nearest branch on the degree of use of virtual channels (internet and phone, aggregated), for different types of activities. Second, when...

Clients of ATM (Asynchronous Transfer Mode) networks communicate by creating connections to one another, then exchanging data over these connections [1] [2] [4] [6] [7] [10]. The ATM standard provides for two types of connections: Virtual Path (VP) and Virtual Channel (VC). With a VP connection, clients set the VP identifier (VPI) field of the ATM header (Figure 1) when sending cells. The netwo...

On behalf of the Technical Program Committee, it is our pleasure to welcome you to the First IEEE Workshop on Performance and Management of Wireless and Mobile Networks. This workshop is held in conjunction with the 30 IEEE Conference on Local Computer Networks, LCN in Sydney, Australia. The co-location of this workshop will provide an excellent opportunity for the workshop participants to exch...