scholarly journals Energy Efficient D2D based Multicast Communication through Channel Allocation Scheme

2019 ◽  
Vol 8 (12) ◽  
pp. 371-375
Keyword(s):  
Energy Efficient ◽  
Partial Information ◽  
Channel Allocation ◽  
Geographical Area ◽  
Base Station ◽  
Allocation Scheme ◽  
Multicast Communication ◽  
Total Energy Consumption ◽  
Association Pattern ◽  
Minlp Problem

In the earlier transmission schemes the base station is responsible for continuous transmission of packets to the receivers when they are not received properly.in these type of re-transmission the BS experiences a great traffic. This paper considers the concept of channel allocation scheme with partial information of device locations. To implement the users in the geographical area is divided into sub clusters, each sub cluster contains one ACK device and few number of NACK devices. The transmission can be done in the TDMA mode. Then the next step is the joint optimization of NACK-devices association and transmission powers of re-transmitters as an MINLP problem, minimizing the total energy consumption of re-transmitters. Finally solving the problem by using an efficient algorithm for this problem to find good association pattern and transmission power.

OPTIMIZATION OF CHANNEL ALLOCATION ALGORITHM FOR HOT SPOT CELLS IN WIRELESS NETWORKS

2012 ◽  
Vol 3 (2) ◽  
pp. 238-241
Author(s):  
Kriti Saraswat ◽  
Ajit Kumar Shrivastava ◽  
Amit Saxena
Keyword(s):  
Wireless Networks ◽  
Cellular Networks ◽  
Hot Spots ◽  
Cellular Network ◽  
Channel Allocation ◽  
Hot Spot ◽  
Hybrid Approach ◽  
Base Station ◽  
Allocation Scheme ◽  
Versus System

Dense deployment of cellular networks is leading to scarcity of communication bandwidth or what we call as channel. If compared to its wired counterparts, wireless cellular network have limited number of channels available, which gives rise to problem of efficient channel allocation. Here, in this piece of work, the main objective is to put an effort to improve existing channel allocation scheme. In earlier existing hybrid allocation scheme, the base station notifies about the hot-spots to the Mobile Switching Centre (MSC) and if MSC has available channels in its central pool then it satisfies the request. Now, the novelty of this work starts where central pool gets exhausted and request of channels from base station (BS) still arrives and is served by returning the unused channels by different cells back to MSC on its request. The simulation of this approach is expounded and evaluated over OMNeT++ in a scenario with fixed channel allocation and hybrid approach by varying the proportion of dynamic channels to total number of channels available and the effectiveness is evaluated in terms of Call blocked and Call dropped versus System load.

Joint Energy-Efficient Resource Allocation Scheme for AF-Based Multi-Relay OFDM Networks

2014 ◽  
Vol 610 ◽  
pp. 783-788
Author(s):  
Zhi Kang Zhou ◽  
Qi Zhu
Keyword(s):  
Resource Allocation ◽  
Energy Efficient ◽  
Optimal Solution ◽  
Mixed Integer ◽  
Allocation Scheme ◽  
Joint Resource Allocation ◽  
The Optimizing Model ◽  
Minlp Problem ◽  
Resource Allocation Scheme ◽  
Optimizing Model

In this paper, a joint resource allocation scheme for energy-efficient communication in cooperative orthogonal frequency division multiple (OFDM) networks based on subcarrier pairing (SP) is studied. The problem aimed at maximizing the system energy efficiency (EE) is formulated into a mixed-integer nonlinear programming (MINLP) problem. To solve the complex MINLP problem, we simplify the optimizing model as a typical fractional programming problem by defining the equivalent channel gain, thus Dinkelbach’s method consisting of outer iterations and inner iterations can be used to find the optimal solution to the MINLP problem proposed in polynomial time. Simulation results show that the proposed scheme can improve the system EE and ensure the quality of service (QoS) of users.

I-LEACH: energy-efficient routing protocol for monitoring of irrigation canals

SIMULATION ◽  
2015 ◽  
Vol 91 (8) ◽  
pp. 750-764 ◽  
Author(s):  
Muhammad Adeel Pasha ◽  
Jahangir Hassan Khan ◽  
Shahid Masud
Keyword(s):  
Routing Protocol ◽  
Energy Efficient ◽  
Geographical Area ◽  
Base Station ◽  
Error Rates ◽  
Network Simulator ◽  
Irrigation Canals ◽  
Energy Efficient Routing ◽  
Coverage Area ◽  
Irrigation Network

Irrigation canals and their tributaries, originating from the run of a river, span a considerable geographical area that is typically of the order of 100 km2. Efficient deployment of wireless sensor networks (WSNs) to monitor and control the flow of scarce water resources is a challenging task, mainly because the WSN motes are designed to consume very low power and communicate over very short distances. This paper investigates the use of different WSN protocols to monitor water usage over irrigation networks in the province of Punjab, Pakistan. This irrigation network is considered to be among the biggest in the world with over 58,000 canal outlets. The paper proposes a new energy-efficient routing protocol that improves the network lifespan as well as the packet error rates resulting in a more dependable distributed WSN. The protocol was simulated along with other state-of-the-art protocols in random as well as linear topologies with simulation variables such as the number of nodes, coverage area and base station position varied in each case. The results also show that the node die-out pattern in our protocol is uniformly spread throughout the network as compared with other existing protocols resulting in increased robustness. The NS3 network simulator was used to simulate the geographically distributed WSN with different protocols and system parameters.

scholarly journals Performance Analysis of Joint Base-Station Multiantenna Multibeam and Channel Assignment Scheme for Hierarchical Cellular System

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Peng Yang ◽  
Dou Liu ◽  
Yan Zhang
Keyword(s):  
Spectral Efficiency ◽  
Channel Assignment ◽  
Channel Allocation ◽  
Base Station ◽  
Adaptive Antenna ◽  
Allocation Scheme ◽  
Dynamic Channel Allocation ◽  
Dynamic Channel ◽  
Simulation Results ◽  
Assignment Scheme

Different from the traditional configuration of hierarchical cellular, we introduce the joint base-station multi-antenna multi-beam and channel assignment scheme for hierarchical cellular in this paper. The proposed scheme is based on multi-beam base-station antenna splitting in the elevation-radiating plane, and a dynamic channel allocation scheme by combining the adaptive antenna technologies. Simulation results show that the proposed configuration of the hierarchical cellular can enhance the spectral efficiency remarkably.

A Survey on Hierarchical Cluster Based Secure Routing Protocols and Key Management Schemes in Wireless Sensor Networks

2018 ◽  
pp. 18-26
Author(s):  
Yugashree Bhadane ◽  
Pooja Kadam
Keyword(s):  
Routing Protocol ◽  
Routing Protocols ◽  
Key Management ◽  
Energy Efficient ◽  
Base Station ◽  
Secure Routing ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Management Schemes ◽  
Cluster Based Routing

Now days, wireless technology is one of the center of attention for users and researchers. Wireless network is a network having large number of sensor nodes and hence called as “Wireless Sensor Network (WSN)”. WSN monitors and senses the environment of targeted area. The sensor nodes in WSN transmit data to the base station depending on the application. These sensor nodes communicate with each other and routing is selected on the basis of routing protocols which are application specific. Based on network structure, routing protocols in WSN can be divided into two categories: flat routing, hierarchical or cluster based routing, location based routing. Out of these, hierarchical or cluster based routing is becoming an active branch of routing technology in WSN. To allow base station to receive unaltered or original data, routing protocol should be energy-efficient and secure. To fulfill this, Hierarchical or Cluster base routing protocol for WSN is the most energy-efficient among other routing protocols. Hence, in this paper, we present a survey on different hierarchical clustered routing techniques for WSN. We also present the key management schemes to provide security in WSN. Further we study and compare secure hierarchical routing protocols based on various criteria.

A Channel Allocation Scheme to Mitigate Wifi Interference for Wireless Sensor Networks

2012 ◽  
Vol 35 (3) ◽  
pp. 504-517 ◽  
Author(s):  
Zhao-Liang ZHANG ◽  
Hai-Ming CHEN ◽  
Ting-Pei HUANG ◽  
Li CUI ◽  
Ze ZHAO
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Channel Allocation ◽  
Wireless Sensor ◽  
Allocation Scheme

A Split Network based Routing Approach in Wireless Sensor Network to Enhance Network Stability

2019 ◽  
Vol 9 (4) ◽  
pp. 480-487 ◽  
Author(s):  
Hardeep S. Saini ◽  
Dinesh Arora
Keyword(s):  
Energy Consumption ◽  
Sensor Network ◽  
Energy Efficient ◽  
Cluster Head ◽  
Base Station ◽  
Operating Efficiency ◽  
Network Stability ◽  
Major Factors ◽  
Ch Selection

Background & Objective: The operating efficiency of a sensor network totally relies upon the energy that is consumed by the nodes to perform various tasks like data transmission etc. Thus, it becomes mandatory to consume the energy in an intelligent way so that the network can run for a long period. This paper proposed an energy efficient Cluster Head (CH) selection mechanism by considering the distance to Base Station (BS), distance to node and energy as major factors. The concept of volunteer node is also introduced with an objective to reduce the energy consumption of the CH to transmit data from source to BS. The role of the volunteer node is to transmit the data successfully from source to destination or BS. Conclusion: The results are observed with respect to the Alive nodes, dead nodes and energy consumption of the network. The outcome of the proposed work proves that it outperforms the traditional mechanisms.

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