Maintaining the quality of service level of local and handover flows during the handover of mobile node from one cell to another in a DiffServ-capable mobile wireless access network is a challenging problem. In this paper we proposed AF2 class to be used as a transient class for handover flows. When a handover flow is expected to cause significant degradation to the bandwidth of local AF1 flows, then it is assigned to AF2 class. The AF2 flows are expected to receive better than best effort service. We developed an admission control algorithm for handover flows that determines their assignment to either AF1 or AF2. We assume Mobile-IP type handover scheme where home agent serving as a mobility anchor point can remark the flow to AF2 DSCP after the handover. We evaluated the workability of our QoS scheme and the admission control algorithm by simulating different handover situations. Our simulation shows that our algorithm does achieve its object. It also shows that the penalty control parameter β is indeed capable of protecting local flows under variety of handover situations.