Affected by wind and other factors, the high altitude platform（HAP）can only be maintained in a quasistationary state. The rotation of the HAP around its central axis is a major problem. When using the classical honey cells, frequent handoff caused by platform rotation will happen especially for outer cells, which will seriously deteriorate the communication performance. An effective method to overcome this problem is to use the ring shaped cells. In the paper, the influence of platform rotation in the HAP communication system is analyzed to prove the necessary of using the ring cells. And then the configuration and multiplexing mode based on the ring cells is proposed for the HAP system. Finally, the realization of ring shaped beam by vertical antenna array is studied and simulated to prove the feasibility of the ring shaped cell.