Patent ID: 8694775
Filing Date: 2014-04-08
Classification: H04L,H04W

Abstract:
1. A method for implementing a real-time data service, comprising: interacting with an Access Point (AP) and an authentication server in a real-time data service system and completing certificate authentication in a Wireless-Local-Area-Network Authentication Infrastructure (WAI) protocol, then negotiating with the AP to obtain a session key K by a mobile terminal; exchanging a control signaling message of the real-time data service between the mobile terminal and a real-time data service server of the real-time data service system through the AP, to start and control the real-time data service; and sending an audio/video data message of the real-time data service from the real-time data service server to the mobile terminal through the AP after the real-time data service is started; wherein the control signaling message is encapsulated into a Media Access Control Protocol Data Unit (MPDU) after being encrypted through the session key K, and then transmitted between the mobile terminal and the AP; and at least one audio/video data message is encapsulated into the MPDU in plaintext and sent to the mobile terminal by the AP; wherein the MPDU sent to the mobile terminal by the AP comprises a plaintext transmission identifier which is used for indicating whether the audio/video data message in the MPDU is encapsulated in plaintext; wherein n1 bits in a reserved field of the MPDU are used as the plaintext transmission identifier; or n2 bits from a second bit to an eighth bit in a session key index field of the MPDU are used as the plaintext transmission identifier; wherein 1≦n1≦8, 1≦n2≦7.