Patent ID: 8073913

Claim:
A method for pushing email in heterogeneous networks, comprising the steps of: sending a mail notification including at least mail priority and mail size of the email from a mail-pushing server to a mobile terminal; determining, by the mobile terminal, a download strategy for the email based on at least one predefined threshold, said mail priority and said mail size; and downloading said email from the mail-pushing server based on the determined download strategy; wherein said step of determining comprises: if said mail priority is low, comparing said mail size with a first predefined threshold; determining to download said email via a WAN interface if said mail size is larger than said first predefined threshold; and determining to download said email via a LAN interface if said mail size is not larger than said first predefined threshold, if said mail priority is high, comparing said mail size with a second predefined threshold; determining to download said email via the LAN interface if said mail size is larger than said second predefined threshold; and determining to download said email via the WAN interface if said mail size is not larger than said second predefined threshold, the first predetermined threshold T 1 is calculated as follows: T 1= R 1* R 2*( P 1* C 2âˆ’ P 2* C 1)/( P 1* P 2*( P 1* R 2âˆ’ P 2* R 1)), the second predetermined threshold T 2 is calculated as follows: T 2=( R 1* C 2âˆ’ R 2* C 1)/( R 2âˆ’ R 1), where P 1 , C 1 and R 1 represent the unit power consumption, the authentication overhead and the network transmission efficiency of LAN interface, respectively, while P 2 , C 2 and R 2 represent the unit power consumption, the authentication overhead and the network transmission efficiency of WAN interface, respectively.