Deploying GIS Services into the Edge: A Study from Performance Evaluation and Optimization Viewpoint

Table 1

Notations and definitions.

Notations	Definitions
	The -th terminal
	Number of terminals
	The -th type of tasks
	Number of applications
	Size of offloading request for
	Size of offloading response for
	Amount of ’s computation
	Probability for to generate
	Task generated by for
	Probability that is executed by
	Probability that is offloaded form to edge server
	Task generation rate of
	Task which is executed by
	Task arrival rate of
	Task which is offloaded form to edge server
	Task arrival rate of
	Service rate of
	Service rate of the edge server
	Service rate of each task
	The service rate of each task
	Average queue length of
	Average queue length of
	Average response time of
	Average response time of
	Uplink transmission rate
	Transmission delay from to edge server
	Downlink transmission rate
	Transmission delay from edge server to
	Energy consumption for completing each computational unit of
	Energy consumption caused by executing
	Energy consumption for completing each computational unit in edge server
	Energy consumption caused by executing
	Transmission energy consumption of
	Energy consumption from to edge server
	Transmission energy consumption of edge
	Energy consumption from edge server to
	Total time consumption for executing
	Total energy consumption for executing
	Balance factor between energy and time