Handover methods between an unlicensed mobile access network and a cellular communication network and apparatuses thereof

An apparatus in a mobile terminal, comprising:

• a positioning-related information acquiring device configured to acquire location information, moving direction, and moving velocity of a mobile terminal participating in a communication session via a first communication connection with an unlicensed mobile access network;
• a positioning-related information sending device configured to send a positioning-related message to a handover processing server with the acquired location information, moving direction, and moving velocity of the mobile terminal;
• an indication message receiving device configured to receive an indication message from the handover processing server, wherein the indication message is sent by the handover processing server in response to the positioning-related message after the handover processing server determines handover probability of the handover is greater than a predetermined probability value for a handover of the mobile terminal from the unlicensed mobile access network to a cellular communication network, wherein the handover processing server determines handover probability based at least in part on the location information, moving direction, and moving velocity in the positioning-related message, wherein the indication message indicates the mobile terminal should initiate a second communication connection with the cellular communication network for handover preparation;
• an initiating device configured to initiate the second communication connection between the mobile terminal and the cellular communication network for handover preparation after receiving the indication message;
• and
• an executing device configured to execute the handover of the mobile terminal from the first communication connection with the unlicensed mobile access network to the second communication connection with the cellular communication network.

An apparatus in a handover processing server, comprising:

• a positioning-related information receiving device configured to receive a positioning-related message from a mobile terminal participating in a communication session via a first communication connection with an unlicensed mobile access network, wherein the positioning-related message includes location information, moving direction, and moving velocity of the mobile terminal;
• a parameter determining device configured to determine handover probability of a handover of the mobile terminal from the unlicensed mobile access network to a cellular communication network at least partly according to the location information, moving direction, and moving velocity in the positioning-related message;
• and
• an indication message sending device configured to send an indication message to the mobile terminal if the determined handover probability is greater than a predetermined probability value to indicate the mobile terminal should initiate a second communication connection with the cellular communication network for handover preparation and execute the handover of the mobile terminal from the first communication connection with the unlicensed mobile access network to the second communication connection with the cellular communication network.