Abstract: In wireless mesh networks, client wish to get a fast roaming handoff protocol, but roaming management is not defined in IEEE802.11s WLAN mesh authentication protocol, during authentication process, information exchanges frequently. This paper proposes identity-based cryptography to manage authentication based on the existing protocol, and transfers the authentication between states and routing nodes. Concurrent the register process and states authentication, then the authentication delay is reduced. The results show that the overall access authentication method is better than existing network standards.