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In this paper, we study the link selection protocol for the network consisting of two sources, two destinations and one half-duplex decode-and-forward (DF) relay equipped with data buffers. In contrast to most of the existing literature where the buffer-aided relay can only unicast, we introduce the multicast communication into the buffer-aided relay network. With the aid of buffers and multicast...
The paper investigates the scenario of wireless multicast with a single transmitter and multiple relays that jointly deliver successively refined (or multi-resolution) sources to multiple receivers. An asynchronous cooperative joint source-channel coding (JSCC) protocol is proposed, which can mitigate the complexity and difficulty in signal synchronization under the wireless multicast with cooperative...
In this paper, we investigate a three-node two-way relaying network over fading channels. The stability of this system is first discussed. Three protocols are then investigated in this work in terms of throughput, including the opportunistic digital network coding (ODNC) scheduling protocol, the physical network coding (PNC) protocol, and the cooperation protocol of DNC with direct link (CDNC-DL)...
In this paper, we propose a buffer-aided relaying protocol for a multiuser relay network consisting of N sources, a relay with a buffer, and a destination. All nodes are equipped with a single antenna and operated in a decode-and-forward half-duplex mode. We assume the direct source-destination links do not exist. Different from the conventional multiuser relaying that the half-duplex relay always...
In a recent paper, we demonstrated the minimization of instantaneous energy in a two-way relay network with digital network coding at the relay, through the optimization of the time-sharing fractions for each mode of transmission. In that work, the channel gains were assumed to be changing so slowly with time that queue stability required instantaneous channel throughput to be no smaller than the...
The SRTP/ZRTP security mechanism provides a secure channel for VoIP (Voice-over-IP) traffic transmission. This paper examines the use of TCG remote attestation technique to improve the security of SRTP/ZRTP channel technology. We first generalize the security properties which a trust channel technique should have. Then we propose a trusted SRTP/ZRTP channel technique and apply model checker SPIN to...
Most structured Peer-to-Peer (P2P) networks assume that all nodes in the network are altruists. However, as the networks grow larger, they may include many selfish nodes, which leech resources from the network without contributing any in return. Therefore, the behaviors of selfish nodes will compromise the network performance. In this paper, we propose a fully distributed incentive scheme based on...
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