[Retracted] 5G-EECC: Energy-Efficient Collaboration-Based Content Sharing Strategy in Device-to-Device Communication

Table 1

Comparative analysis of related work.

Year	Paper	Research methodology	Matching mode	Proactive caching	Content type	Advantage	Disadvantage	Limitation
2017	[12]	Proactive caching based on social ties	N/A	Yes	N/A	Improved throughput delay and energy efficiency	Change in popularity will affect the performance of the network	Popularity of content is not considered
2017	[13]	Hypergraph framework-based proactive caching	N/A	Yes	Mobile multimedia	Improved battery life and local cache gain	Under mobility, caching does not perform well	Mobility factor is not focused on
2018	[14]	MDS codes-based proactive caching approach	N/A	Yes	Video	High global cache hit ratio	Different video preference is not considered	Mobility is considered, but cache strategy considers only popular videos
2019	[5, 17]	5G D2D communication	One to one	N/A	Mobile multimedia	Improved throughput delay and energy efficiency	The devices with high link quality are selected, which increases battery usage	Centralized approach
2019	[18–20]	Cooperative D2D communication	One to many	Yes	Mobile multimedia	Battery life improved	Simultaneous request for resources by multiple demanders can result in a burden on single provider end	Centralized approach
2020	[8]	D2D coordination; Multiple point transmission	Many to many	N/A	Mobile multimedia	Improved energy efficiency by equal distribution of resources	Mobility will affect the scalability	This approach works when demander and provider are equal and static