scholarly journals Energy Efficiency Maximization of Two-Time-Slot and Three-Time-Slot Two-Way Relay-Assisted Device-to-Device Underlaying Cellular Networks

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3422
Author(s):  
Van-Van Huynh ◽  
Nguyen Tan-Loc ◽  
Ma Quoc-Phu ◽  
Lukas Sevcik ◽  
Hoang-Sy Nguyen ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Cellular Networks ◽  
Time Slot ◽  
Transmission Rate ◽  
Average Energy ◽  
Transmission Probability ◽  
D2d Communication ◽  
Transmission Power ◽  
Device To Device ◽  
Total Average

The continuous development of fifth generation (5G) communication and Internet of Thing (IoT) inevitably necessitates more advanced systems that can satisfy the growing wireless data rate demand of future equipment. Device-to-Device (D2D) communication, whose performance is evaluated in terms of the overall throughput, energy efficiency (EE) and spectral efficiency (SE), is considered a promising solution for the aforementioned problem. Thereby, this paper aims at improving the performance of the D2D communication underlaying cellular networks operating on multiple bands by maximizing the EE in its uplink. Thanks to the stochastic geometry theory, it is possible to derive the closed-form expressions for the successful transmission probability (STP), the total average transmission rate (TATR), and the total average energy efficiency (TAEE) of cellular and D2D users in different time slot setting. Particularly investigated and compared in this study, there are one-hop, direct, D2D communication in two time slots (2TS), and multi-hop, indirect, D2D communication in three time slots (3TS) with an additional D2D user acting as a two-way relay to assist the communication. Moreover, an optimization problem is formulated to calculate the maximum TAEE of D2D users and the optimum transmission power of both the cellular and D2D users. Herein this optimization study, which is proven to be non-convex, the Quality of Service (QoS) is ensured as the STP on every link is considered. The herein approach is referred to as relay-assisted D2D communication which is capable of delivering a notably better QoS and lower transmission power for communication among distant D2D users.

scholarly journals Investigation of energy efficiency of two-way relay-assisted multi-band machine-to-machine communications

2021 ◽  
Vol 23 (2) ◽  
pp. 863
Author(s):  
Hoang Thien Van ◽  
Vo Tien Anh ◽  
Danh Hong L. ◽  
Chi Duong Thi Kim ◽  
Hoang-Sy Nguyen
Keyword(s):  
Energy Efficiency ◽  
Time Slot ◽  
Average Energy ◽  
Cooperative Relaying ◽  
Transmission Power ◽  
Machine To Machine ◽  
Machine To Machine Communication ◽  
Machine Communication ◽  
Multi Band

In this paper, we improve the uplink energy efficiency (EE) of the multi-band machine-to-machine (M2M) communications underlaying cellular networks. In particular, based on the theory of stochastic geometry, we derive the closed-form expressions of the outage probability (OP), and the average energy efficiency of cellular and Machine-to-Machine users in two-way cooperative relaying networks with three-time-slot setting. We ensure the quality of service (QoS) by considering the OP and the average energy efficiency of all links. It is concluded that the three-time-slot relay-aided Machine-to-Machine communication can offer considerably high QoS and low transmission power for fairly distant machine-to-machine networks.

scholarly journals Perfomance Comparison of Genetic and Greedy Algorithms in Underlay Device-to-Device Communication

2020 ◽  
pp. 459-476
Author(s):  
Salma Pratiwi ◽  
Arfianto Fahmi ◽  
Vinsensius Sigit Widhi Prabowo
Keyword(s):  
Genetic Algorithm ◽  
Energy Efficiency ◽  
Quality Of Service ◽  
Spectral Efficiency ◽  
Greedy Algorithms ◽  
D2d Communication ◽  
Superior Performance ◽  
Device To Device ◽  
Radio Resources

The number of cellular users (CU) continues to increase in Indonesia. This impacts a large network load for the number of devices connected to the main network so it will have an impact on the quality of service. Device-to-Device (D2D) communication as components for LTE-A technology enabling a direct wireless link between the CUs without routing the data via the evolved Node B (eNB) signal or the core network. The need for algorithm and power control used to allocate radio resources so it can get a good quality of service because of communications technology D2D. In this study, we analyze and compare the performance parameters of D2D communication systems, including system interference, system sum-rate, system spectral efficiency, total energy system, and system energy efficiency based on Genetic and Greedy Algorithms in allocating radio resources and controlling the power of users. The genetic algorithm works with three operators in allocating resource block (RB), including proportional selection, crossover, and mutation. This process is repeated many times to produce several generations so that the best allocation can be got. The genetic algorithm has a flexible number of D2D and cellular communications in several RBs, minimum signal to interference plus noise ratio (SINR) also considered for mobile communication in ensuring the quality of its services. Numerical evaluations demonstrate the superior performance of the Genetic Algorithm in terms of system power, energy efficiency, and interference mitigation. As repetition gets larger, the Genetic algorithm results in better spectral efficiency.

scholarly journals A Survey on Relay Selection in Cooperative Device-to-Device (D2D) Communication in 5G Cellular Networks

2017 ◽  
Author(s):  
Shamganth K ◽  
Said Shafi Abdullah Al-Shabibia
Keyword(s):  
Cellular Networks ◽  
Spectral Efficiency ◽  
Relay Selection ◽  
Relay Node ◽  
Cooperative Networks ◽  
Vital Role ◽  
D2d Communication ◽  
Destination Node ◽  
D2d Communications ◽  
Device To Device

Device-to-device (D2D) communications underlayed to a cellular infrastructure has recently been proposed to increase spectrum and energy efficiency. Relay selection plays a vital role in cooperative networks. In D2D communication, if the chosen relay is not the best relay, then the whole communication will not be successful from source node to destination node. Also to choose the optimal relays, if more feedback and time delay exists between the source nodes and relay node then it leads to degradation of spectral efficiency.  A survey on the relay selection techniques used with D2D communications and the challenges and design issues associated with the integration of D2D in 5G cellular network is presented.

Sign in / Sign up

Export Citation Format

Share Document