Social Networks (SNs), such as Facebook, Twitter and LinkedIn, have become ubiquitous in our daily life. However, as the number of SN users grows, the SN usage grows and there is higher demand for users’ Quality of Experience (QoE). For instance, some users would prefer to filter some posts, e.g. unwanted friendship requests and certain categories of posts, i.e. sports related posts. Users may also prefer to subscribe to a higher Quality of Service (QoS) level with their SN provider to have, for instance, higher priority on posting/retrieving. 
3GPP 4G Evolved Packet Core (EPC)-Based systems are all IP network architectures that enable users to connect to mobile networks through their mobile devices and seamlessly change from one access technology to another. EPC systems enable service provisioning with guaranteed and differentiated end-to-end QoS.
This thesis proposes a novel architecture that enables differentiated QoS and information filtering in SNs to improve the users QoE. The SN is deployed on top of 3GPP 4G EPC-Based systems, and it uses EPC services to enable guaranteed and differentiated QoS. The components of the proposed architecture interact through RESTful web services. This architecture allows users to filter posts using their own criteria and have priority over other users in posting and/or retrieving; thereby, improving users’ QoE. 
A proof of concept prototype tool has been implemented to illustrate the viability of the proposed architecture and its performance has been partially evaluated.