Summary
International Symposium on Antennas and Propagation
2010
Session Number:4FD1
Session:
Number:4FD1-1
Throughput Effects of the LTE DL due to LTE UE
Ho-Kyung Son,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
In Korea, SK Telecom (SKT) operator has been serviced Cellular CDMA systems by using the frequency of 824~849MHz/869~894MHZ. But the Korea Communications Commission (KCC) announced recently that they collected partial frequency band and allocated it to new service operator. Also KCC allocated the frequency of 905~915MHz/950~960MHZ to new operator for mobile communication service. Candidate technology which will be serviced at these freequency bands can be LTE, etc. The mobile broadband access providing outstanding user data rates gets reality within the next couple of years by the widespread deployment of OF DM based wireless technologies such as LTE and WiMAX [1, 2]. An example of such a band plan is illustrated in Figure 1 and we can expect the interference scenarios including base station to base station interference and user equipment to user equipment interference. In other words, we can consider an interference path from the LTE B user equipment (UE) into an LTE A downlink, where user equipment (UE) of LTE A would be interfered. We can also consider an interference path from the LTE A base station into an LTE B uplink, where base station (BS) of LTE B would be interfered. In this paper, we are only concentrating on the downlink throughput reduction of the LTE system when the LTE uplink is adjacent to each other and operated by different operators. In order to determine the UE-UE interference, it has been assumed normally that the users are uniformly located over the network area. In this case, the impact of UE-UE interference can be difficult to ascertain, due to the strong influence of the terminal distribution [3]. Also this is not real situation and the users in the radio cell located inside clusters. The indoor users are mainly located inside offices, shopping malls, restaurants etc. And the outdoor users are typically located in the squares, pedestrian streets or in the parking areas [4]. To determine levels of interference that will be experienced within a real system, analysis would need to include realistic assumptions such as appropriate user distribution. So we evaluated the impact of UE-UE interference considering real user distribution and also recommend the proper technical criteria for use without adjacent interference between other operators.