how to calculate energy consumption for wireless network

how to calculate energy consumption from one node to other node in wireless network using D2D

[Walter Roberson]

d2d -- resample discrete time model ???

[Bidyarani]

can you please provide formula for calculating energy consumption?

Answer 1

[Walter Roberson]

Are you using the same transmit power for every message? Is the total power to transmit a particular message constant or does it depend upon the size of the message? Are you using fixed-position relay nodes? Are you breaking the devices into sectors with the nodes in one particular sector responsible for trying to continually estimate where the other nodes are in the same sector and do direct transmissions to them, plus there being a sector head in each sector that is responsible for trying to keep track of the other sector heads? Is each node occasionally sending out a "beacon" of its current GPS position, and if so then are you keeping track of the energy required to keep track of current GPS coordinates? Is each node occasionally sending out a "beacon" that just says, "I'm still here!" with other nodes in the sector deliberately examining the signal strength of the beacon message in order to estimate effective distance? If a node has not heard from other nodes for a while, is there a protocol for it to increase the transmission power of its beacons under the theory that it might have wandered out of range or entered a concrete area or that some interfering object such as a truck might be in the path? When a node suspects that it might be about to move into a different sector, is there a protocol to determine which node is the sector leader for the new sector and then negotiate a hand-off between the current sector and the new sector? Or does the beacon for the sector leaders always include a list of all of the (current) sector leaders so that there is no need for a protocol to probe what the current sector leader is for the new sector? Are the sector leaders special and stable, or are they ordinary nodes? Because if they are ordinary nodes then the current sector leader might move to a different sector and then there has to be a protocol to elect a new sector leader and notify the current members of the sector of the new sector leader and notify the other sector leaders in other sectors of who they should talk to...

The formula for energy consumption in a wireless network is the total of:

• number of nodes times duration of the operation of the network times baseline "at rest" energy consumption (low power state, waiting for something to happen); and
• the sum over each transmitted message, of the integral of the transmission power during the message; and
• the sum over all of the nodes, of the energy consumption during mid-level activity when not actively transmitting, such as while updating information tables about where the various nodes are
• the sum over each transmitted message, of the energy expended by each actual or borderline receiver of the message, to receive (or filter out) the message -- it takes energy to decode a message header to figure out of the message is for you, and it takes energy to decode the message if you decide to pay attention to it, and it takes energy to passively evaluate the transmission power of a message (in which case you would have had to pay enough attention to the message to grab the ID of the node transmitting the message)