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SIP (Session Initiation Protocol) is standardized by Internet Engineering Task Force (IETF) as a signaling and control functionality for multimedia services (video and audio). However, SIP is a text-based protocol with messages usually exceeding several hundred bytes in size, thus causing high call set-up latency over low bit-rate links. As a consequence, SIP suffers from undesirable delay which is...
With the availability of multiple rates in IEEE 802.11 a/b/g wireless LANs, it is desirable to improve the network capacity and temporal fairness by sending multiple consecutive frames over high rate links, as proposed in opportunistic auto rate (OAR [1]). However, the basic OAR does not provide quality of service (QoS) guarantee and thus is not sufficient in supporting real time voice/video traffic...
Providing quality of service (QoS) to users in a wireless ad-hoc network is a key concern for service providers. With the availability of multiple rates in IEEE 802.11a/b/g wireless LANs, it is desirable to improve the network capacity and temporal fairness by sending multiple consecutive frames (also referred as frame concatenation mechanism) over high rate links, as proposed in opportunistic auto...
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