LTE‐Advanced

Cross-layer QoE-driven admission control and resource allocation for adaptive multimedia services in LTE

“…Given that multiple applications (with differing QoS requirements) can be running simultaneously from a user device, different bearers supporting different QoS classes may need to be established. When a new bearer (or the modification of the existing one) is needed, an option is for the MS to send a request to the application server (AS) on top of the default bearer (Holma and Toskala, 2011). The AS then sends the request for setup of a session to the PCRF, which creates corresponding Policy and Charging Control (PCC) rules to determine how a certain data flow will be treated (including mapping to QCIs and bit rates).…”

“…In the following text, knowledge of the LTE architecture is assumed. For interested readers, a more detailed description can be found in Holma and Toskala (2011). In the access network, the eNodeB performs scheduling of packets by distributing radio resource blocks to sessions every millisecond, thus being able to prioritize certain services.…”

“…Mapping of the proposed resource management schemes to the LTE architecture(Holma and Toskala, 2011).…”