Inner-access-technological-network communication method and device

The invention provides an inner-access-technological-network communication method and device, and relates to the field of wireless communication. The problem in control over power consumption of UE when the 3GPP access network is communicated with the WLAN is solved. The inner-access-technological-network communication method includes the steps that a communication decision-making entity of a first access technological network and a second access technological network conducts judgment according to the terminal electricity-saving priority principle; the communication process of the first access technological network and the second access technological network is triggered only when any one limiting event or a plurality of limiting events happens/happen. According to the technical scheme, the inner-access-technological-network communication method and device are suitable for LTE systems or the UMTS, and control over the power consumption of the UE in the 3GPP access network and WLAN communication process is achieved.