T-MAC Protocol Research Articles

Optimization of T-MAC Protocol in WSN Based on Minimum Contention Window

Optimization of T-MAC Protocol in WSN Based on Minimum Contention Window

LEC-TMAC: Improving Energy Consumption & Latency in TMAC Protocol for Wireless Body Area Network

<p class="Standard">The most common protocols for Wireless Body Area Network (WBAN) like TMAC, ZigBeeMAC, Baseline MAC protocol .In this paper, evaluating the effects of LEC-TMAC Protocol wireless body area network basis of Latency and energy consumption. This analysis is important in point of view that the varying requirement of WBAN according to varying conditions. In LEC-TMAC, the application packet rate of nodes a considerable effect is observed on latency and energy consumption for MAC protocols that is presented in the paper. As a conclusion, we invoke a number of new research challenges with regard to prospects of Wireless body area network and other issues.</p>

LEC-TMAC: Improving Energy Consumption & Latency in TMAC Protocol for Wireless Body Area Network

The most common protocols for Wireless Body Area Network (WBAN) like TMAC, ZigBeeMAC, Baseline MAC protocol .In this paper, evaluating the effects of LEC-TMAC Protocol wireless body area network basis of Latency and energy consumption. This analysis is important in point of view that the varying requirement of WBAN according to varying conditions. In LEC-TMAC, the application packet rate of nodes a considerable effect is observed on latency and energy consumption for MAC protocols that is presented in the paper. As a conclusion, we invoke a number of new research challenges with regard to prospects of Wireless body area network and other issues.

Mobility-aware timeout medium access control protocol for wireless sensor networks

Wireless sensor networks (WSNs), has been under development for a while by the academia and industry. Due to limited computational power, a typical sensor node may experience operational challenges. Moreover, mobility has become an important feature since emergency and healthcare related applications are evolving in WSNs. Consideration of mobile nodes in WSNs introduce new challenges for the designers. In this paper, an enhanced version of T-MAC protocol (a well-known medium access control protocol in WSNs) known as MT-MAC is proposed. Using the capturing fluctuation in RSSI and LQI values of the received SYNC packets, MT-MAC solves high packet drop ratio in T-MAC. By detecting the mobility, a mobile node softly handover to a new virtual cluster without losing connection with other nodes. The performance of the proposed solution is then compared with T-MAC, S-MAC as well as other well-known mobility-aware MAC (MS-MAC) protocol. The simulation results show that the proposed protocol significantly increases the throughput and packet delivery ratio of T-MAC in exchange for a small increase in power consumption. Compared to MS-MAC protocol, the proposed approach can reduce power consumption by 20–65%, and achieve slightly higher packet delivery ratio.

Allocation of multi-objective cross-layer wireless sensor network resource based on chaotic parallel genetic algorithm

A chaotic parallel genetic algorithm for the allocation of a multi-objective cross-layer wireless sensor network resource is provided, in which chaotic sequence and parallel genetic algorithm are used to dynamically adjust target selection, communication time slots and other parameters for optimizing the global cross-layer resource allocation. Simulations are conducted to compare the chaotic parallel genetic algorithm method with random allocation algorithm, dynamic programming algorithm, T-MAC protocol and the S-MAC protocol separalely. The simulation results show that the chaotic parallel genetic algorithm has a small communication delay and high success rate of target detection, which reduces the power consumption and improves the real-time characteristic of wireless sensor network.

An Analytical Model for Power Control T-MAC Protocol

paper presents a Power Control TMAC protocol that combines the features from SMAC and TMAC protocol s for Wireless Sensor Networks (WSN). This protocol has been proposed to reduce the energy consumption of a node. In WSN a node consumes energy in transmitting and receiving of data, listening transmissions of other nodes, and in sleep mode. Therefore, energy consumption of a node has been estimated by adding up the energy consumed in each of the above activity. This has been achieved by estimating the time spent in each activity by a node. The proposed protocol has been simulated using NS�2. The simulation results of Power Control TMAC shows better energy savings as compared to TMAC and SMAC proto col.

무선 센서 네트워크에서의 에너지 절감을 위한 SR패킷 MAC 프로토콜에 관한 연구

무선 센서 네트워크에서의 통신은 여러 계층으로 나뉘어 각 계층별 역할을 수행하므로 무선통신이 가능할 수 있다. 센서 네트워크에서의 통신계층 중 하나인 MAC(Medium Access Control)계층은 데이터의 에러, 흐름을 제어하고 자원을 관리하기 위해서 사용되며 MAC Protocol을 사용하여 센서 노드간의 통신을 보장한다. 본 논문에서는 에너지 효율성 측면을 강조한 S-MAC. T-MAC 프로토콜의 문제점을 알아보고 SYNC 패킷에 RTS 패킷이 추가된 기법을 이용하여 컨트롤 패킷 전송 시간동안 꼭 필요한 노드만 컨트롤 패킷을 송수신하고, 나머지 노드들은 Sleep 함으로써, 모든 노드가 깨어있는 시간을 효율적으로 줄여 에너지 효율성을 강조하였다. SYNC+RTS 패킷을 보내고 패킷을 받는 노드는 순간 자신이 이번 주기 동안 깨어 있을 필요가 없음을 알고 바로 Sleep모드로 들어가서 기존의 MAC프로토콜보다 에너지가 효율적임을 수학적으로 증명하고 MATLAB으로 시뮬레이션 하였다. The communication in wireless sensor network is divided into several layers, because of each of them do their role, the wireless communication is possible, the MAC (Medium Access Control) layer of the one of sensor network communications layer is used to the data errors, control flow, and manage resources. Using MAC Protocol, it ensures the communication between sensor node. In this paper, highlighted the energy efficiency of the S-MAC, T-MAC protocol it emphasized the efficiency of energy by lessening the woken time of all nods effectively, transmitting and receiving the control packet on only necessary nods through use of a method that RTS packet is added to SYNC packet and making other nods sleep. On sending SYNC+RTS packet and receiving the packet, nod noticed that it wasn't necessary to be awaked on this period, would be in Sleep mode, demonstrated mathematically that energy is more effective than existing protocol, and simulated with MATLAB.

A Throughput-Aimed MAC Protocol with QoS Provision for Cognitive Ad Hoc Networks

In this letter, we propose a Throughput-aimed MAC Protocol with Quality of Service (QoS) provision (T-MAC) for cognitive Ad Hoc networks. This protocol operates based on the Time Division Multiple Access (TDMA) slot assignments and the power control mechanism, which can improve the QoS provision and network throughput. Our simulation results show that the T-MAC protocol can efficiently increase the network throughput and reduce the access delay.