# We discussed multi-cell scheduling in Example 7.2. In this problem, we will investigate a different.

We discussed multi-cell scheduling in Example 7.2. In this

problem, we will investigate a different multi-cell scheduling system. Consider

a cellular network consisting of two cells. The cells use the same frequency

band, and employ time division to avoid interference. Unlike Example 7.2, each

cell performs its own scheduling due to insufficient backhaul. Instead, the

following coordination is in place: Each cell area is divided into an inner

zone and an outer zone. When both cells have picked users from the inner zone,

they use one timeslot to transmit simultaneously. Otherwise, they allocate two

timeslots for sending the packets, i.e., one slot for each. Assume that the

cells always have data to transmit. a) How much throughput increase can we

expect compared to static time division? The inner zone radius is assumed to be

0.7Do. b) What is the inner zone radius that gives a 30% throughput improvement

over static time division?