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US 9,432,175 B2Granted
Control channel management for relay backhaul
AssigneeQUALCOMM Incorporated
InventorsWanshi Chen, Peter Gaal
Life of this patent
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Abstract
Aspects of the present disclosure provide techniques for managing control channels for relays that utilize half-duplex operation. According to certain aspects, a certain type of PDCCH may be selected based on one or more criteria.
Claims30
A method for wireless communications by a base station, comprising:
- selecting, based on one or more criteria, between at least a first type of physical downlink control channel (PDCCH) and a second type of PDCCH for transmission to a half duplex relay node used to relay transmissions between the base station and a user equipment (UE) served by the base station;
- and
- transmitting a PDCCH of the selected type to the half duplex relay node in a subframe.
A method for wireless communications by a relay node, comprising:
- determining between at least monitoring for a first type of physical downlink control channel (PDCCH) and monitoring for a second type of PDCCH transmitted from a base station that uses the relay node to relay transmissions between the base station and a user equipment (UE) served by the base station;
- and
- monitoring for a PDCCH of the determined type in a subframe.
An apparatus for wireless communications by a base station, comprising:
- at least one processor configured to select, based on one or more criteria, between at least a first type of physical downlink control channel (PDCCH) and a second type of PDCCH for transmission to a half duplex relay node used to relay transmissions between the base station and a user equipment (UE) served by the base station and transmit a PDCCH of the selected type to the half duplex relay node in a subframe;
- and
- a memory coupled with the at least one processor.
An apparatus for wireless communications by a relay node, comprising:
- at least one processor configured to determine between at least monitoring for a first type of physical downlink control channel (PDCCH) and monitoring for a second type of PDCCH transmitted from a base station that uses the relay node to relay transmissions between the base station and a user equipment (UE) served by the base station, and monitor for a PDCCH of the determined type in a subframe;
- and
- a memory coupled with the at least one processor.
Dependencies are inferred from the claim text.