Figure 3
From: Self-organising interference coordination in optical wireless networks
Collision avoidance using cellular slot access and reservation (CESAR) approach [21]. The size of the coordination cluster (a) is set such that any two transmitter and receiver pair that could cause collisions are within the coordination cluster, which is a principle followed for resource partitioning (b). Only one cell within a coordination cluster accesses idle chunks and avoids transmitting on those chunk where BB is sensed above the threshold value. The idle chunks that are successfully accessed are reserved and used for transmission in subsequent slots (c).