Impact of Resource Blocks Allocation Strategies on Downlink Interference and SIR Distributions in LTE Networks: A Stochastic Geometry Approach

Figure 1

In Figure 1(a) an example of RB allocation is given. eNodeB uses RB (the first one has index , and the other ones are indexed from to ). It uses the RB with index to communicate with the typical user. is the index of the last resource used by eNodeB . As it uses RB indexed from to , here. The number of used RB for the other eNodeB are , , etc. An eNodeB interferes if and only if it reuses the resource : in this example eNodeB and . In Figure 1(b), we plot a sample of the point process describing eNodeB location with the same RB assignment. The eNodeB interfering with the typical user is then a dependent thinning of the original point process where the thinning involves eNodes , , and (this last interfering eNodeB was not shown in Figure 1(a)). Their Voronoï cells are colored in green.

(a) RB allocation

(b) Impact of RB allocation on interferer