Demir, A.K. | Irgan, K. | Baydere, S. | Engin Demiray, H.

Conference Object | 2013 | 2013 9th International Wireless Communications and Mobile Computing Conference, IWCMC 2013 , pp.1488 - 1493

IEEE Region 10 2013 9th International Wireless Communications and Mobile Computing Conference, IWCMC 2013 -- 1 July 2013 through 5 July 2013 -- Cagliari, Sardinia -- 99240

Demir, A.K. | Demiray, H.E. | Baydere, S.

Conference Object | 2011 | IWCMC 2011 - 7th International Wireless Communications and Mobile Computing Conference , pp.565 - 570

Wireless Sensor Networks (WSNs), having inherent features, require new protocols and algorithms for QoS provisioning in realtime multimedia applications. In this paper, we present a new cross-layer communication module, called XLCM and its protocol XLCP enabling scalable service differentiation in WSNs. We implemented XLCP as a module in NS-2 simulator to evaluate its performance. The results indicate that the protocol succesfully differentiates the service classes in terms of latency and reliability requirements. © 2011 IEEE.

Buyukkayhan, A.S. | Kavak, A. | Yaprak, E.

Conference Object | 2013 | 2013 International Conference on Electronics, Computer and Computation, ICECCO 2013 , pp.76 - 79

In this paper, we determine the statistical properties of the Real Time Protocol (RTP) flows and enhance the Statistical Protocol Identification (SPID) application to differentiate voice and data traffic. We added 3 new attribute meters and generate a model database for the Session Initiation Protocol (SIP) and RTP protocols. The preliminary results with very low number of training capture seem promising. The results show that our new attributes improve the RTP flow identification recall by 15%. © 2013 IEEE.

Demir, A.K. | Turkes, O. | Baydere, S.

Conference Object | 2014 | International Conference on Wireless and Mobile Computing, Networking and Communications , pp.598 - 603

We investigate QoS provisioning in a Wireless Activity Monitoring Network(WAMN) when data traffic is a mixture of emergency short voice commands and 3D accelerometer signals for remote monitoring of a group of elderly people living in a health care building. Nodes equipped with acoustic and accelerometer sensors form a multi hop wireless sensor network. The network carries multi class traffic to the sink over a service differentiation protocol for processing. Utilization of limited resources is critical for feasible quality of service. We analyze network performance trade-offs and elaborate on optimal buffer length, MAC retransmissi . . .on count and transmit power for best achievable voice quality at the sink. Based on the results of extensive simulations, we conclude with some remarks on the tuning off network resources for data segment reliability and voice quality in terms of a novel R-factor metric for the given scenario. © 2014 IEEE Daha fazlası Daha az