Remove one node from an existing circle

Hello, i am having a big trouble now. I have some circles and i can count the numbers of nodes inside the circles with xq(in). But for an overlapped areas as you can see from the picture i have problem. I will measure the throughput generated within each cells, and for the overlapping areas, node will choose the closest base stations(greenpoints), now i can show generated data inside the circles,, but with the overlapped ones, i am calculating the distance to each base stations and i know which one is the minimum path but the thing is,, node will pick the shortest path it is ok but when use xq(in) i do not want that node will be seen by the other base station which wasnt selected as a base station, because the path is longer, do you have any ideas how can i just let data visible in the closest base station but invisible to other base stations. Thank you.

[Image Analyst]

What does it mean to "be seen by the other base stations"? A node (dark blue circle I presume) will have one of the green base stations be the closest, and others will be farther away - that's fine - but what does it mean to be "seen"? Do you want to create a map for each base station that shows which nodes "belong" to it (are closest to it)? So you'd have a map (new image) for every single yellow circle/green spot?