Method of file transmission based upon distributed storage in wireless communication system

A method of downlink file transmission in a wireless communication network including wireless access nodes, a control node and a user prediction system, the method comprising:

• the control node determining slice metadata information of a file to be transmitted to a user equipment;
• the user prediction system predicating a movement of the user equipment and determining a plurality of storage wireless access nodes of the user equipment according to the movement;
• and
• the storage wireless access nodes receiving and storing slices of the file and transmitting storage indication information of the slices of the file to the control node.

A method of transmitting a file from a first user equipment to a second user equipment in a wireless communication network including wireless access nodes, a control node and a user prediction system, the method comprising:

• the first user equipment transmitting slice metadata information of the file to the control node;
• the user prediction system predicating movements of the first user equipment and the second user equipment and determining a plurality of storage wireless access nodes of the first user equipment and the second user equipment respectively according to the movements;
• the first user equipment encrypting the slices of the file using a key generated by an SIM card of the first user equipment and transmitting the encrypted slices to the storage wireless access nodes of the first user equipment;
• the storage wireless access nodes of the first user equipment receiving and storing the slices of the file from the first user equipment, transmitting storage indication information of the slices of the file to the control node and transmitting the slices of the file to the storage wireless access nodes of the second user equipment;
• the storage wireless access nodes of the second user equipment receiving and storing the slices of the file and transmitting storage indication information of the slices of the file to the control node.

A method of searching for a file in a wireless communication network including wireless access nodes, a control node and a user prediction system, the method comprising:

• each of the wireless access nodes building a database of keyword indexes according to keywords in file slice contents and storing the databases on the wireless access nodes when they are idle;
• the control node receiving a request message from a user equipment regarding a search for a specific keyword and transmitting a searching command regarding the keyword to the wireless access nodes;
• the wireless access nodes searching the databases of keyword indexes according to the searching command and reporting search matching results of slices back to the control node;
• the user predication system predicating a movement of the user equipment and generating parameters related to locations of the wireless access nodes according to the movement;
• and
• the control node generating file matching results according to the search matching results of slices in combination with the parameters related to the relative locations of the wireless access nodes where the slices are located and generating a list of download candidates according to the file matching results.