Downlink control channel design and signaling for beamformed systems
US10813085B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2016 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Feb 3, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0069
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Transmit and/or receive beamforming may be applied to the control channel transmission/reception, e.g., in mmW access link system design. Techniques to identify candidate control channel beams and/or their location in the subframe structure may provide for efficient WTRU operation. A framework for beam formed control channel design may support varying capabilities of mBs and/or WTRUs, and/or may support time and/or spatial domain multiplexing of control channel beams. For a multi-beam system, modifications to reference signal design may discover, identify, measure, and/or decode a control channel beam. Techniques may mitigate inter-beam interference. WTRU monitoring may consider beam search space, perhaps in addition to time and/or frequency search space. Enhancements to downlink control channel may support scheduling narrow data beams. Scheduling techniques may achieve high resource utilization, e.g., perhaps when large bandwidths are available and/or WTRUs may be spatially distributed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.