Simultaneous sensing and data transmission
AssigneeSTMicroelectronics S.r.l.
InventorWendong Hu
Life of this patent
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Abstract
In order to satisfy the conflicting requirements for spectrum sensing and QoS of data transmission, it is highly desirable for a cognitive radio system, e.g. IEEE 802.22 WRAN, to perform spectrum sensing and data transmission simultaneously. Embodiments of the invention address critical issues of self-interference generated from a transmission unit to the co-located sensing unit when the simultaneous sensing and data transmission technique is applied. A number of interference mitigation techniques are described and analyses are given.
Claims9
A method for use in wireless regional area network (WRAN) systems, comprising:
- providing a WRAN cell operated by a base station to wirelessly communicate with at least one consumer premise equipment;
- operating the base station to determine a channel available for use;
- initializing the channel to provide an in-band channel for data transmission;
- and
- simultaneously performing spectrum management and spectrum sensing on a plurality of out-of-band channels and data transmission on the in-band channel.
A method for use in wireless regional area network (WRAN) systems, comprising:
- providing a WRAN cell operated by a base station to wirelessly communicate with at least one consumer premise equipment;
- operating the base station to determine a channel available for use;
- initializing the channel to provide an in-band channel for data transmission;
- and
- simultaneously performing spectrum management, spectrum sensing on a plurality of out-of-band channels, and data transmission on the in-band channel, wherein the simultaneous performance of spectrum management, spectrum sensing on a plurality of out-of-band channels, and data transmission is capable of operating at an interference below about −116 dBm with interference mitigation techniques.
A system for simultaneous data transmission, spectrum sensing, and spectrum management, comprising:
- a base station;
- and
- at least one user transceiver coupled to the base station by a radio air interface, wherein the base station and at least one user transceiver include interference mitigation techniques and wherein the system is capable of operating at an interference below about −116 dBm during the simultaneous data transmission, spectrum sensing, and spectrum management.
Dependencies are inferred from the claim text.