Method and system for spectrum handover in cognitive radio networks
AssigneeChina Academy of Telecommunications Technology
InventorsWenling Bai, Zhuo Gao, Chenggang Jiang, Yuanyuan Li, Yu Yang
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Abstract
Various examples provide a method and a system for spectrum handover in cognitive radio (CR) systems. According to the method, after detecting a user of an authorized system appears at a current working frequency, the base station generates a spectrum handover command and sends the spectrum handover command via a channel identified by the CR DWNDI to instruct the UEs in the cell to perform spectrum handover according to the spectrum handover command.
Claims19
A method for spectrum handover in cognitive radio (CR) systems, the method comprising:
- configuring a CR dedicated wireless network device identity (DWNDI) of a user equipment (UE) to be a CR DWNDI value shared by plural UEs within a cell of a base station which communicates with the plural UEs at a working frequency;
- instructing, by the base station, the plural UEs to perform spectrum handover to a target frequency using a spectrum handover command which is sent via a channel identified by the CR DWNDI value and received by the plural UEs according to the CR DWNDI value after the base station detects that a user of an authorized system appears at the working frequency;
- and
- communicating, by the base station, with the plural UEs at the target frequency after the spectrum handover.
A method for spectrum handover in cognitive radio (CR) systems, the method comprising:
- receiving, by a user equipment (UE), a CR dedicated wireless network device identity (DWNDI) value from a base station as a CR DWNDI of the UE, the CR DWNDI value is shared by plural UEs within a cell of the base station which communicates with the plural UEs at a working frequency;
- receiving, by the UE, a spectrum handover command sent by a base station from a channel identified by the CR DWNDI value;
- performing, by the UE, spectrum handover to a target frequency according to the spectrum handover command;
- and
- communicating, by the UE, with the base station at the target frequency after the spectrum handover.
A cognitive radio (CR) system, comprising a base station and a user equipment (UE), wherein the base station comprises:
- a managing module, configured to configure a CR dedicated wireless network device identity (DWNDI) of a user equipment (UE) to be a CR DWNDI value shared by plural UEs within a cell of the base station which communicates with the plural UEs at a working frequency;
- a determining module, configured to generate a spectrum handover command after detecting a user of an authorized system appears at the working frequency;
- and
- a sending module configured to instruct the plural UEs to perform spectrum handover to a target frequency by sending the spectrum handover command via a channel identified by DWNDI value to communicate with the plural UEs at the target frequency.
Dependencies are inferred from the claim text.