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![Core network simplified diagram [1].](profile/Oscar-Peredo/publication/316921278/figure/fig1/AS:494114291621889@1494817436039/Core-network-simplified-diagram-1.png)
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![Fig. 1. Core network simplified diagram [1].](profile/Oscar-Peredo/publication/316921278/figure/fig1/AS:494114291621889@1494817436039/Core-network-simplified-diagram-1_Q320.jpg)
Telecommunication data is being used increasingly in urban mobility applications around the world. Despite its ubiquity and usefulness, technical difficulties arise when using Packet-Switched Charging Data Records (CDR), since its main purpose was not intended for this kind of applications. Due to its particular nature, a trade-off must be consider...
Context in source publication
Context 1
... terms of volume, the amount of CDR generated by packet switched events (related with Internet traffic and services) is several orders of magnitude larger than the circuit switched counterparts (Voice, SMS). According to [1], a simplified diagram of the core network components and connections involved in the packet switched traffic is depicted in Fig. 1. Internal gateway nodes (SGSN, GGSN, S-GW and P-GW) handle internet traffic between each subscriber device and applications server, and also generate charging data handled by special network functions (Charging Gateway Function). As the generated events can be geo-located using the lati- tude/longitude of the corresponding network cell ...
