Mobility management method, network side device, internet-of-vehicles terminal, and system

A mobility management method, which is applied to a network side device, wherein the method comprises:

• sending a radio resource control RRC connection reconfiguration message to an Internet of Vehicles terminal when determining that network handover is required to be performed for the Internet of Vehicles terminal;
• and
• receiving an RRC connection reconfiguration completion message which carries current physical location information of the Internet of Vehicles terminal and is sent by the Internet of Vehicles terminal,
• determining, by the network side device, a neighboring Internet of Vehicles terminal that is located from the Internet of Vehicles terminal by a distance less than or equal to a first threshold according to the current physical location information of the Internet of Vehicles terminal, and obtaining a radio resource occupied by the neighboring Internet of Vehicles terminal;
• according to the radio resource occupied by the neighboring Internet of Vehicles terminal, the network side device performs one of the following operations:
• allocating for the Internet of Vehicles terminal a radio resource that is in the same frequency band as that of a radio resource occupied by one of the neighboring Internet of Vehicles terminals having a largest distance to the Internet of Vehicles terminal;
• and
• allocating for the Internet of Vehicles terminal a radio resource that is in the same frequency band as that of the radio resource occupied by one of the neighboring Internet of Vehicles terminals having a time domain distance to the Internet of Vehicles terminal larger than a second threshold.

A mobility management method, which is applied to an Internet of Vehicles terminal, wherein the method comprises:

• receiving an RRC connection reconfiguration message sent by a network side device;
• and
• sending an RRC connection reconfiguration completion message carrying current physical location information of the Internet of Vehicles terminal to the network side device after completing reconfiguration of a radio resource according to the RRC connection reconfiguration message,
• wherein the radio resource is allocated by the network side device according to radio resources occupied by neighboring Internet of Vehicles terminals of the Internet of Vehicles terminal through one of the following operations:
• allocating for the Internet of Vehicles terminal the radio resource that is in the same frequency band as that of a radio resource occupied by one of the neighboring Internet of Vehicles terminals having a largest distance to the Internet of Vehicles terminal;
• and
• allocating for the Internet of Vehicles terminal the radio resource that is in the same frequency band as that of the radio resource occupied by one of the neighboring Internet of Vehicles terminals having a time domain distance to the Internet of Vehicles terminal larger than a second threshold.