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