Joint resource allocation and power control for cellular and device‐to‐device multicast based on cognitive radio

Abstract

Device-to-device (D2D) communication is an excellent technology for improving the system capacity through sharing the spectrum resources of cellular networks. Multicast service is considered an effective transmission mode for the future mobile social contact services. Therefore, multicast with D2D technology can improve the resource efficiency. In this paper, a resource allocation scheme based on cognitive radio (CR) for D2D underlay multicast communication (CR-DUM) is proposed to improve system performance. In each D2D multicast group of the cognitive cellular system, the secondary users reuse the different orthogonal cellular resources to accomplish a multicast transmission. To maximise the total system capacity under the condition of interference and noise impairment, the authors formulate an optimal transmitting power allocation for the cellular and D2D multicast communications jointly. The proposed scheme includes two steps. First, two channel allocation rules are proposed to reduce the interference from cellular networks to receivers in D2D multicast group. Second, the optimal power allocation is formulated as a non-linear programming problem and the optimal solution is achieved by searching from a finite set for the allocated channel. The simulation results show that the proposed method can ensure the quality of service (QoS) and improve the system capacity.

Performance evaluation of combining SMT‐ETX metric with POS scheme for implementing multilayer multicast mobile ad hoc network (MANET) CRN

“…Under amplify and forward method the cognitive system with secondary multi‐relay is taken into consideration and the preferable relay that convinced and indicator of quality is chosen. In [20] multicast method with device to device technique based on CR network is suggested as a distribution source scheme to enhance the behaviour of the system. Channel and optimum power distribution statutes are jointed with one another in this system to minimise the involvement from cellular networks to recipients in CR‐DUM set.…”

Techniques for extending unicast CR networks to multi‐source multi‐destination over Rayleigh fading channels

“…After that stage, the best relay is chosen to work together with the secondary source node as per the index of merit. A resource allocation scheme that builds on CR pertaining to device‐to‐device underlay multi‐cast communication has been put forward in [17] to enhance the performance of the system. A strategy to determine the channel availability pertaining to mobile CRNs has been proposed in [11].…”

Energy-Efficient Multicast Transmission for Underlay Device-to-Device Communications: A Social-Aware Perspective

“…Among current contributions related to D2D multicast transmission, most of the works focus on how to mitigate the reuse interference through resource allocation and power control schemes [17][18][19][20]. Meshgi et al [17] studied a joint channel and power allocation strategy which aims at maximizing the sum throughput of cellular users and D2D groups in a cell.…”

“…Meshgi et al [17] studied a joint channel and power allocation strategy which aims at maximizing the sum throughput of cellular users and D2D groups in a cell. Wu et al [18] adopted a distance based channel allocation and power allocation scheme harnessing cognitive radio to maximize system capacity for D2D underlay multicast communication. Peng et al [19] researched the problem of resource allocation involving with D2D multicast groups underlaying OFDMA systems.…”

“…Combined with the power constraint given in (15), if the calculated transmit power of both CUE and DUE obtained in (18) is less than the maximum allowed transmission power, we choose CUE as the resource sharing partner for D2D group . By substituting (18) into the object function (16), we can determine the minimum transmit power of different D2D multicast group so as to maximize the overall energy efficiency of D2D groups. On the other hand, if the calculated transmit power of both CUE and DUE is larger than the maximum allowed power constraints, then CUE will be removed from the list, and we will try the next available CUE.…”