Table 4 Social-based routing protocols
From: Content distribution and protocol design issue for mobile social networks: a survey
Publication | Motivation | Main idea | Social characteristics | Optimization strategies | Simulation results |
|---|---|---|---|---|---|
Socially based routing [78] | Resolving the contradiction that conserving limited resources and achieving efficient data transmission | Present and future nodes contact and buffer space are known ahead of time; such knowledge is exploited to increase the opportunity of reaching destinations | Centrality | Controlled message replication (number limited), simple buffer mechanism | Reduces the number of transmissions, while keeping the same or higher delivery ratio |
Giveaiet [79] | Selfish nodes only torward messages to nodes that have social ties with them, which is harmful for message transmission | Selfishnodes are simulated for their own benefit to forward messages for others. | Individual selfishness | Greedy and real-time controlled message replications | Improve the deanery ratio |
Data diffusion [80] | Selfish nodes only forward messages for nodes that have social ties with them, which can reduce the number of copies | A node has two kinds of contacts: friends and strangers; messages are forwarded according to the type of nodes | Socially selfish | Real-time controlled message replication | Reduce the number of copies |
Friend [81] | People from the same community tend to interact more often than others from different communities | Each node builds its friendship community; messages are forwarded to destinations or the node containing destinations in its community | Community | Not mentioned | Reduce traffic created |
Smitict [82] | Betweenness can identify bridge nodes; similarity can measure the common characteristics | Message is forwarded to a structurally more central node | Betweenness centrality and similarity | Not mentioned | Delivery performance close to Epidemic but with significantly reduced overhead |
Simbetage | Betweenness are time-An varying | Extension of SimBet | Time-varying betweenness and similarity | Not mentioned | Delivery performance can be drastically improved |
Simbetage [83] BubbleRap | Betweenness are time-An varying Betweenness can identify central nodes; community can reduce traffic | Considering the changes of social characteristic over time. Nodes deliver messages up to a more “popular” node | Time-varying betweenness and similarity Community and betweenness centrality | Not mentioned Not mentioned | Delivery performance can be drastically improved Improve the efficiency of message transmission |