ANALYSIS OF COMBINATIONAL RESOURCES ALLOCATION FOR VARIOUS USER EQUIPMENT APPLICATION REQUESTS IN A FEMTOCELL
Growing data requirements due to increase in cell phone usage has led to new generation of technologies such as Long Term Evolution networks used in femtocells. However, users vary in terms of resource block demands due to high bandwidth cell phone applications which are normally limited in a femtocell.
This paper uses two examples for bandwidth analysis per user’s cell phone application needs and applies the combinational selection technique to allocate resources. First, it determines the number of resource block requests then the combinational algorithm computes the best users’ sequence allocation.
The first example considers when a cell phone is switched on. It utilizes the synchronization signals to search for available resources for connection. These occupy a single slot in a resource block. A scenario of 6 users is considered where the users have the following SINR (Signal to Interference plus noise ratio) values. User 1 has 10 dB, user 2 has 20 dB, user 3 has 15 dB, user 4 has 5 dB, user 5 has 12 dB and user 6 has 18 dB. The combinational sequence is carried out against 4 available resources. The highest SINR group is found to be users: [2 3 5 and 6] who are allocated resources. A second example considers the same six users with different set of data transmission requests. With only 18 available resources, the results are: user 1 is allocated 2 resources, user 2 is allocated 2 resources, user 3 is allocated 5 resources, user 5 is allocated 5 resources and user 6 is allocated 4 resources. These demonstrate that the combinational technique allocates all resource requests types and still prioritizes high SINR valued users.