LTE backhaul link architecture Sample Clauses

LTE backhaul link architecture. 3GPP LTE offers significantly higher data rates in comparison to 2G and 3G sys- tems. LTE is most likely to offer 100/50 Mbps in uplink/downlink (in 1 sector, with 20 MHz bandwidth) and even up to 1 Gbps for the whole site that consists of three sectors where downlink/uplink data rates are of 300/150 Mbps [30]. This in comparison with 3G peak data rates of 30 Mbps means that existing backhaul capacities need to be increased significantly by at least 10x the same capacity14. 14It is expected that due to enhanced bandwidth and extra features proposed, LTE-Advanced will have even up to 1 Gpbs in downlink [4]. Another important factor that greatly differentiates 4G backhaul links from legacy systems, is the shift in architectural paradigm from hierarchical TDM (Time Di- vision Multiplex) based architecture to flat IP-based. Flat architecture consists of lesser number of elements, which in turns forces mesh topology, and expects purely IP packet transmission between network entities. The figure 4.6 presents a flat ar- chitecture of backhaul link connectivity, where RANs are connected with different Core Network entities as well as with each other, constituting for meshed topology.
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