This document presents a proposed approach for securing reliable connectivity and quality of service (QoS) among wireless body area networks (WBANs) using an alliance game theoretic method. It first describes the issues that mobility and increased traffic from multiple WBANs can cause interference and degradation of connectivity and QoS. The proposed method dynamically selects an access point for reliable connectivity between WBANs and the AP. It then forms alliances among WBANs near the AP to schedule packets cooperatively and minimize delay while maximizing throughput using a game theoretic approach. Simulation results show the proposed approach outperforms current methods in terms of various performance metrics.