Popularity-Guided Cost Optimization for Live Streaming in Mobile Edge Computing

Table 1

Major notations.

Notation	Definition
	Set of sources (cloud servers)
	Set of subscribers (MEC servers)
	Set of servers where
	Set of links
	Set of channels
	Set of subscribing channels of server
	Streaming rate of channel
	Source server of channel
	Predicted popularity of channel
	Set of subscribers of channel
	Deliver tree of channel
	Link from server to server
	Link capacity of
	Capacity cost of
	Indicator indicating whether is used
	Propagation delay of ,
	Worst-case scheduling delay of server
	Source-to-end delay of server in tree
	Total delay constraint
	Total capacity cost