Reduction of Interference for Wireless Sensor Networks: A Regret Matching Based Approach

In wireless sensor networks employed with multiple channels in order to reduce the interference as well as support parallel transmission. Energy usage over the network dramatically increased because of usage of multiple channels. To overcome this problem which was addressed above statement have been achieved by proposed a Regret Matching based Channel Assignment algorithm (RMCA). In this strategy each sensor node elect its choice of channels based on the channel state information which leads to reduce the interference. In RMCA approach is more distributed over network and limited information is exchanged among sensor nodes so that can achieve minimum delivery ratio even less number of flows performed. This algorithm performed well for time-variant flows and network topology. It provided better network performance in the case of delivery ratio and packet latency compared with existing methods such as CONTROL, MMSN and randomized CSMA. Deploy the sensor nodes over network and assign the non-overlapping channel for receiving packets from various sensor nodes. The utility function is derived based on the valid receiving ratio (VRR) and average packet transfer delay (ATD). Based on the utility function all sensor odes are completely measured without exchanging the information among other nodes. At last channel assignment by RMCA to the time-invariant transmission flows to reduce interference efficiently. 1. LITERATURE SURVEY Title1: A practical multichannel media access control protocol for wireless sensor networks: Despite availability of multiple orthogonal communication channels on common sensor network platforms, such as MicaZ motes, and despite multiple simulation-supported designs of multi-channel MAC protocols, most existing sensor networks use only one channel for communication, which is a source of bandwidth inefficiency. In this work, the system design, implement, and experimentally evaluate a practical MAC protocol which utilizes multiple channels efficiently Advantages: It has more channels for communications. It is used to dynamically allocate channels for each mote in a distributed manner transparently to the application and routing layers. Disadvantages: It is not sufficient to avoid network overload. Title2: MMSN: Multi-frequency media access control for wireless sensor networks: Multi-frequency media access control has been well understood in general wireless ad hoc networks, while in wireless sensor networks, researchers still focus on single frequency solutions. In wireless sensor networks, hardware devices are equipped with very limited communication ability and applications adopt much smaller packet sizes compared to those in general wireless ad hoc networks. Hence, the multi-frequency MAC protocols proposed for general wireless ad hoc networks are not suitable for wireless sensor network applications, which we further demonstrate through our simulation experiments. In this paper, the system propose MMSN, the first multi-frequency MAC protocol for wireless sensor networks. In the MMSN protocol, four frequency assignment options are provided to meet different application requirements. A scalable media access is designed with efficient broadcast support. Also, an optimal non-uniform back off algorithm is derived and its lightweight approximation is implemented in MMSN, which significantly reduces congestion in the time synchronized media access design. Through extensive experiments, MMSN exhibits prominent ability to utilize parallel transmission among neighboring nodes. It also achieves increased energy efficiency when multiple physical frequencies are available. Reduction of Interference for Wireless Sensor Networks: A Regret Matching Based Approach International Journal of Research Studies in Science, Engineering and Technology [IJRSSET] 9 To reduce the communication cost, we propose a lightweight eavesdropping scheme. In eavesdropping, each node takes a random backoff before it broadcasts its physical frequency decision. During the backoff period, each node records any physical frequency decision overheard. When a node’s backoff timer fires, it randomly chooses one of the least chosen frequencies for data reception. Compared with even selection, eavesdropping has less communication overhead, but it also results in more potential conflicts, because it only collects information within one hop for frequency decisions. Advantages: It achieves increased energy efficiency when multiple physical frequencies are available. Disadvantages: It cannot be evaluated with different sensor devices. Title3: Hop reservation multiple access for multichannel packet radio networks: A new multichannel MAC protocol called Hop Reservation Multiple Access (HRMA) for packetradio networks is introduced, specified and analyzed. HRMA is based on very-slow frequency hopping spread spectrum (FHSS) and takes advantage of the time slotting necessary for frequency hopping. HRMA allows a pair of communicating nodes to reserve a frequency hop (channel) using a hop reservation and handshake mechanism on every hop to guarantee collision-free data transmission in the presence of hidden terminals. HRMA provides a baseline to offer QoS in adhoc networks based on simple half-duplex slow FHSS radios. The system analyze the throughput achieved in HRMA for the case of a fully connected network assuming variable-length packets, and compare it against an ideal multichannel access protocol and the multichannel slotted ALOHA protocol. Advantages: It allows systems to merge and nodes to join existing systems. Disadvantages: It does not analyze variants of HRMA with improved performance. Title4: Architecture and algorithm for an IEEE 802.11-based multi-channel The focus of this paper is on wireless mesh networks (WMNs). A WMN operates just like a network of fixed routers, except that they are connected only by wireless links. WMNs are gaining significant momentum as an inexpensive way to provide last-mile broadband Internet access. In this application, some of the nodes in the WMN are connected to the Internet via physical wires, while the remaining nodes access the Internet through these wired gateways by forming a multi-hop WMN with them. As deployment and maintenance of physical wires is a major cost component in providing high-speed Internet access, use of WMN at the last hop significantly brings down the overall system cost and offers an attractive alternative to DSL/cable modem. Another application of WMN is an enterprisescale wireless backbone, where access points inter-connect using wireless links to form a connectivity mesh. Most of today’s enterprise wireless LAN deployment is only limited to the access network role, where a comprehensive wired backbone network is still needed to relay traffic from/to wireless LAN access points. Use of WMN can effectively eliminate the wired backbone and enable truly wireless enterprises. Advantages: As more interfaces within an interference range are assigned to the same radio channel, the effective bandwidth available to each interface decreases. Disadvantages: A channel assignment algorithm needs to balance between maintaining network connectivity and increasing aggregate bandwidth.