Abstract
In this paper, we propose a new traffic flow model of the Long Term Evaluation (LTE) network for the Evolved Universal Terrestrial Radio Access Network (E-UTRAN). Here only one Evolve Node B (eNB) nearest to the Mobility Management Entity (MME) and Serving Gateway (S-GW) will use the S1 link to bridge the E-UTRAN and Evolved Packet Core (EPC). All the eNBs of a tracking area will be connected to each other by the X2 link. Determination of capacity of a links of such a network is a challenging job since each node offers its own traffic and at the same time conveys traffic of other nodes. In this paper, we apply maximum flow algorithm including superposition theorem to solve the traffic flow of radio network. Using the total flow per subcarrier, a new traffic model is also developed in the paper. The relation among the traffic parameters: ‘blocking probability’, ‘offered traffic’, ‘instantaneous capacity’, ‘average holding time’, and ‘number of users’ are shown graphically under both QPSK and 16-QAM. The concept of the network will be helpful to improve the SINR of the received signal ofeNBslocated long distance relative to MME/S-GW.
Highlights
Traffic analysis of the Long Term Evaluation (LTE) network is found in recent research works and few of them which are relevant to the paper is considered here
We propose a new radio network of LTE, where Evolve Node B (eNB) are connected by X2 links like the conventional network, and the entire traffic carried by the eNBs will be accumulated at a node nearest to the Management Entity (MME)/Serving Gateway (S-GW)
When users are adjacent to eNB they receive strong SNR and the system use 16-QAM (4 bits/symbol) again when users are at cell boundary experience huge fading use QPSK scheme (2bits/symbol)
Summary
Traffic analysis of the LTE network is found in recent research works and few of them which are relevant to the paper is considered here. In [4] authors compare different algorithms pertinent to prioritizing traffic on LTE mobile network. Four traffic parameters: throughput, delay, packet delivery ratio and packet loss ratio are considered to compare the Quality of Service (QoS) of the network and results are shown graphically. In [5] only one traffic parameter called jitter (delay difference) is related with resource block (RB) assignment of LTE network under real time multimedia traffic. In performance evaluation they consider High Definition (HD) video stream of uplink (UE to eNB) using a simulation under Network Simulator (NS3).
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