US 10,873,423 B2 · Systems and methods for allocation of uplink control channel resources in unlicensed spectrum

Abstract

Wireless communication between a user equipment (UE) and a base station may occur on unlicensed spectrum. When wirelessly communicating on unlicensed spectrum, there is an expectation that there may be interference from others devices also transmitting on the same resources in the unlicensed spectrum. Systems and methods are therefore disclosed that aim to facilitate wireless communication in unlicensed spectrum. In some embodiments, systems and method are disclosed that are primarily directed to the uplink transmission of hybrid automatic repeat request (HARQ) feedback corresponding to a downlink data transmission, and the downlink data transmission and the HARQ feedback are both sent on unlicensed spectrum.

Claims30

Dependent claims

A method performed by a user equipment (UE), the method comprising:

receiving a downlink transmission indicating a plurality of time-frequency resources allocated for uplink transmission of the UE, the plurality of time-frequency resources being in a plurality of uplink frequency partitions of an unlicensed spectrum that do not overlap with each other in a frequency domain;
for each uplink frequency partition of the plurality of uplink frequency partitions:
listening to a wireless channel in a frequency region of the uplink frequency partition to determine whether the wireless channel is unoccupied in the frequency region of the uplink frequency partition;
and
transmitting an uplink transmission in at least one of the plurality of uplink frequency partitions for which the frequency region of the wireless channel is unoccupied.

2 more elements

Dependencies are inferred from the claim text.

Systems and methods for allocation of uplink control channel resources in unlicensed spectrum

Life of this patent

Systems and methods for allocation of uplink control channel resources in unlicensed spectrum

Life of this patent

Abstract

Claims30