1. A method for acquiring information for media independent handover (MIH) by a mobile station (MS), the method comprising: submitting a media independent handover (MIH) query to a base station (BS) by sending a first request message, the first request message is used for at least one of authorization, authentication, security key management, and security association (SA); and receiving a response to the MIH query, the response to the MIH query is used for at least one of the authorization, the authentication, the security key management, and the security association (SA).