Analysis of discontinuous reception (DRX) on energy efficiency and transmission delay with bursty packet data traffic

2020 ◽  
Author(s):  
Jinyan Wu ◽  
Jaesung Park
Keyword(s):  
Energy Efficiency ◽  
Transmission Delay ◽  
Data Traffic ◽  
Packet Data ◽  
Discontinuous Reception

Detection and Control of Bursty Video and Packet Data Traffic

1996 ◽  
pp. 89-96
Author(s):  
C. Thompson ◽  
V. Harpanahalli ◽  
S. Mulpur ◽  
B. Jang
Keyword(s):  
Data Traffic ◽  
Packet Data ◽  
And Control

scholarly journals Area Spectral Efficiency and Energy Efficiency Tradeoff in Ultradense Heterogeneous Networks

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Lanhua Xiang ◽  
Hongbin Chen ◽  
Feng Zhao
Keyword(s):  
Energy Efficiency ◽  
Heterogeneous Networks ◽  
Spectral Efficiency ◽  
Point Processes ◽  
Optimization Problem ◽  
Focal Point ◽  
Base Station ◽  
Data Traffic ◽  
Total Energy Consumption ◽  
Area Spectral Efficiency

In order to meet the demand of explosive data traffic, ultradense base station (BS) deployment in heterogeneous networks (HetNets) as a key technique in 5G has been proposed. However, with the increment of BSs, the total energy consumption will also increase. So, the energy efficiency (EE) has become a focal point in ultradense HetNets. In this paper, we take the area spectral efficiency (ASE) into consideration and focus on the tradeoff between the ASE and EE in an ultradense HetNet. The distributions of BSs in the two-tier ultradense HetNet are modeled by two independent Poisson point processes (PPPs) and the expressions of ASE and EE are derived by using the stochastic geometry tool. The tradeoff between the ASE and EE is formulated as a constrained optimization problem in which the EE is maximized under the ASE constraint, through optimizing the BS densities. It is difficult to solve the optimization problem analytically, because the closed-form expressions of ASE and EE are not easily obtained. Therefore, simulations are conducted to find optimal BS densities.

Performance Analysis of Multiple Relays Cooperative Truncated Automatic Repeat Request in Wireless Sensor Networks

2019 ◽  
Vol 17 (9) ◽  
pp. 733-738
Author(s):  
Yong-Qiang Zhou ◽  
Lei Dai ◽  
Suo-Ping Li
Keyword(s):  
Energy Efficiency ◽  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Packet Transmission ◽  
Transmission Delay ◽  
Wireless Sensor ◽  
Automatic Repeat Request ◽  
Mathematical Expressions ◽  
Average Transmission ◽  
Multiple Relays

In this paper, we research the performance of direct and non-direct multiple relays cooperative truncated automatic repeat request (D/ND-MRCT-ARQ) protocols in wireless sensor networks (WSNs). We propose a method that named discrete time Markov chain (DTMC) with N + 2 states, which could obtain the throughput formulas of D/ND-MRCT-ARQ protocols. Furthermore, we solve the mathematical expressions of the average transmission delay of both protocols by truncating the number of packet retransmission. In addition, we derive energy efficiency formulas of both protocols under considering the different power consumption of each node. Simulation results demonstrate that the proposed D-MRCT-ARQ protocol achieve higher throughput and energy efficiency while fewer average packet transmission delay, as compared with the ND-MRCT-ARQ protocol.

scholarly journals Energy Efficient and Delay Aware 5G Multi-Tier Network

2019 ◽  
Vol 11 (9) ◽  
pp. 1019
Author(s):  
Nahina Islam ◽  
Ammar Alazab ◽  
Johnson Agbinya
Keyword(s):  
Energy Efficiency ◽  
Mobile Network ◽  
Base Station ◽  
Small Cells ◽  
Sleep Mode ◽  
Indoor Environments ◽  
Data Traffic ◽  
5G Networks ◽  
Energy Expenditures ◽  
Markov Decision

Multi-tier heterogeneous Networks (HetNets) with dense deployment of small cells in 5G networks are expected to effectively meet the ever increasing data traffic demands and offer improved coverage in indoor environments. However, HetNets are raising major concerns to mobile network operators such as complex distributed control plane management, handover management issue, increases latency and increased energy expenditures. Sleep mode implementation in multi-tier 5G networks has proven to be a very good approach for reducing energy expenditures. In this paper, a Markov Decision Process (MDP)-based algorithm is proposed to switch between three different power consumption modes of a base station (BS) for improving the energy efficiency and reducing latency in 5G networks. The MDP-based approach intelligently switches between the states of the BS based on the offered traffic while maintaining a prescribed minimum channel rate per user. Simulation results show that the proposed MDP algorithm together with the three-state BSs results in a significant gain in terms of energy efficiency and latency.

scholarly journals Non-Uniform Concentric Rings Design for Ultra-Wideband Arrays

Sensors ◽  
2019 ◽  
Vol 19 (10) ◽  
pp. 2262 ◽  
Author(s):  
Marco A. Panduro ◽  
Alberto Reyna ◽  
David H. Covarrubias
Keyword(s):  
Energy Efficiency ◽  
Ultra Wideband ◽  
Wireless Sensor ◽  
Synthesis Process ◽  
Data Traffic ◽  
Concentric Ring ◽  
Uniform Spacing ◽  
Efficient Delivery ◽  
Wideband Arrays ◽  
Array Structures

This paper presents the design of aperiodic concentric ring arrays for ultra-wide bandwidths (UW-ACRA). This design of ultra-wideband arrays considers the synthesis of concentric rings in two cases: 1) non-uniform spacing between rings with non-uniform spacing between antenna elements of the same ring (UW-ACRAelements); and 2) non-uniform spacing between rings assuming that spacing between antenna elements of the same ring to be equal (UW-ACRArings). This is in order to eliminate the occurrence of grating lobes and generating array structures with useful ultra-wideband properties. The synthesis process is carried out by the well-known method of differential evolution (DE). Wireless sensor networks can take advantage of these properties to achieve less data traffic, efficient delivery of information and better energy efficiency.

scholarly journals Energy Efficiency for Data Offloading in D2D Cooperative Caching Networks

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Weiguang Wang ◽  
Hui Li ◽  
Wenjie Zhang ◽  
Shanlin Wei
Keyword(s):  
Energy Efficiency ◽  
Optimization Algorithm ◽  
Network Performance ◽  
Transmission Probability ◽  
Maximum Energy ◽  
Joint Optimization ◽  
Data Traffic ◽  
Data Offloading ◽  
Transmit Power ◽  
Policy Optimization

D2D communication improves the cellular network performance by using proximity-based services between adjacent devices, which considered is an effective way to solve the problem of spectrum scarcity caused by tremendous mobile data traffic. If the cache-enabled users are willing to send the cached file to the requesters, the content delivery traffic can be offloaded through the D2D link. In this paper, we strive to find the maximum energy efficiency of the D2D caching network through the joint optimization of cache policy and content transmit power. Specifically, based on stochastic geometry-aided modeling of the network, we derive the data offloading rate in closed form, which jointly considers the effects of success sensing probability and success transmission probability. According to the data offloading rate, we formulate a joint optimization problem integrating cache policy and transmit power to maximize the system energy efficiency. To solve this problem, we propose two optimization algorithms that the cache policy optimization algorithm based on gradient update and the joint optimization algorithm. The simulation results demonstrate that the joint optimization has twice the superiority in improving the energy efficiency of the D2D caching network compared with other schemes.

scholarly journals An Internet of Vehicles (IoV) Access Gateway Design Considering the Efficiency of the In-Vehicle Ethernet Backbone

Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 98
Author(s):  
Dae-Young Kim ◽  
Minwoo Jung ◽  
Seokhoon Kim
Keyword(s):  
Computer Simulations ◽  
Autonomous Driving ◽  
Vehicular Network ◽  
Transmission Efficiency ◽  
Transmission Delay ◽  
Data Traffic ◽  
Internet Of Vehicles ◽  
High Bandwidth ◽  
Average Transmission ◽  
Vehicle Network

A vehicular network is composed of an in-vehicle network (IVN) and Internet of Vehicles (IoV). IVN exchanges information among in-vehicle devices. IoV constructs Vehicle-to-X (V2X) networks outside vehicles and exchanges information among V2X elements. These days, in-vehicle devices that require high bandwidth is increased for autonomous driving services. Thus, the spread of data for vehicles is exploding. This kind of data is exchanged through IoV. Even if the Ethernet backbone of IVN carries a lot of data in the vehicle, the explosive increase in data from outside the vehicle can affect the backbone. That is, the transmission efficiency of the IVN backbone will be reduced due to excessive data traffic. In addition, when IVN data traffic is transmitted to IoV without considering IoV network conditions, the transmission efficiency of IoV is also reduced. Therefore, in this paper, we propose an IoV access gateway to controls the incoming data traffic to the IVN backbone and the outgoing data traffic to the IoV in the network environment where IVN and IoV are integrated. Computer simulations are used to evaluate the performance of the proposed system, and the proposed system shows better performance in the accumulated average transmission delay.

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