Joint Approach of Routing , Rate Adaptation and Power Control in Wireless Mesh Networks
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This document proposes a joint approach of routing, rate adaptation, and power control in wireless mesh networks. It aims to provide an energy-aware rate adaptation technique based on a new routing metric. The objectives are to provide the best routing metric and rate adaptation, achieve minimum delay and shortest routes. It calculates SNR at the MAC layer based on received power and noise. Distance is calculated using nodes' x,y positions. The energy optimization flowchart is presented. Energy is calculated based on distance, transmission power, time, and number of packets using the given formula.
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Joint Approach of Routing , Rate Adaptation and Power Control in Wireless Mesh Networks
- 1. JOINT APPROACH OF ROUTING, RATE ADAPTATION & POWER CONTROL IN WMN Presented By:- Manjunath M. Badiger Department of Information Science and Engineering BVBCET Hubli - 31
- 2. CONTENTS • Problem Statement • Objectives • System Model • Power Control Flow Chart • References
- 3. PROBLEM STATEMENT To propose a cross layer energy aware rate adaptation technique for data transmission in wireless mesh networks based on a new routing metric and adapt the transmission rate at MAC layer based on statistics collected by routing metric.
- 4. OBJECTIVES • To provide a best routing metric and rate adaptation technique. • To achieve minimum end –to-end delay in delivery of data. • To achieve shortest route to reach the destination node. • To combine both routing and rate adaption under single entity. • To monitor the performance in different parameters. • Calculate the SNR at mac module. • Calculate the Distance from source node to destination node. • Calculation of Energy.
- 5. RATE ADAPTATION Power Optimization ` MAC LAYER NETWORK LAYER PARAMETER EXTRACTION DETEMINATION OF PATH USING ROUTING METRIC MAC LAYER LINK QUALITY RSSI IR, CW, Cn ETX Physical layer
- 6. ENERGY OPTIMIZATION FLOWCHART • flow chart.docx
- 7. ENERGY CALCULATION W.R.T TO SNR AND DISTANCE CALIBRATION. • Calculation of SNR:- SNR is calculated by the following formula. 𝑆𝑁𝑅 = 10 log 𝑅𝑥_𝑃𝑜𝑤𝑒𝑟/𝑁𝑜𝑖𝑠𝑒 * Rx Power is the frame signal strength at the receiver. It is calculated by propagation model. * Noise should be calculated from the receiver sensitivity of the data rate used by the frame.
- 8. CONTINUED.. • If other frames arrive to the receiver when it is receiving one frame, the SNR of this receiving frame is, 𝑆𝑁𝑅 = 10𝑙𝑜𝑔 𝑅𝑥 𝑃𝑜𝑤𝑒𝑟 𝑁𝑜𝑖𝑠𝑒 + ∑𝑖 = 1 𝑅𝑥_𝑃𝑜𝑤𝑒𝑟𝑖 • Rx_Poweri is the signal strength of other frames at the receiver.
- 9. CALCULATION OF DISTANCE:- If the (x1, y1) is the position of the first node and (x2,y2) is the position of the second node then the distance between the two nodes is been calculated by the following formula. • 𝑑 = 𝑥2 − 𝑥1 2 + 𝑦2 − 𝑦1 2 0.5
- 10. PROCESS:- • Firstly we sense the traffic load at the mac layer, then we check the neighbor node sensing that we check all the paths available from source to destination. Then we calibrate that which is best suited path for transmission of data from source to destination. • If two paths have the same distance but one node is been involved in another transmission then we choose the free path for transmission of packets from source to destinations. • After the path is selected we calculate the SNR using the above formula considering the transmission power and receiving power with the noise as explained above in the formula. • Like this we are reducing energy required in the wireless networks for transmission of data.
- 11. ENERGY CALCULATION • Formula for calculation of energy:- 𝐸 = 𝑑𝑃𝑇𝑥𝐾 Where E represents energy d represents distance for destination node P represents the power with the snr calculated. Tx represents the transmission time for one packet. K represents the total number of transmitted packets from the source node.
- 12. THANK YOU