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Advance of Network Architecture for Mobile Social Contents

Different from the conventional network paradigms such as the client-server based structure, users in MSNs do not always need to contact far away servers to request content. Instead, they can directly communicate with each other to share content by short range wireless interfaces with peer to peer opportunistic links.

One of the most important features in MSNs is that users may have different interests in different content, and users with common interests can form a community based on their social ties. In the community, the content can be shared and distributed among these users. Small cells, which are covered by low power cell towers installed by the operator, are responsible for providing communication within the community. Compared with small cells, a macro cell is usually covered by the traditional base stations. The macro cell can provide communication within a large coverage area about a few kilometers. With cooperation among the macro cell, small cells, communities, and users, mobile content can be delivered in MSNs in 5G, with the main structure shown in Fig. 6.1. However, there are new challenges to deliver mobile content in 5G.

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