Abstract
A system and method of Random-Access Response RAR messaging when a base station employs narrow beamforming. Multiple RAR messages are successively transmitted from the base station to a User Equipment UE before any response to a RAR message is received from the UE. Thus despite any calibration mismatch between Uplink UL and Downlink DL beams in the beamformed system a RAR message is not only received by the UE but is received over the most-suitable DL beam for that UE. Each RAR message may contain a message-specific scheduling-delay indicator in the UL grant carried in the RAR message to provide an adjustable time delay for the UEs uplink transmission scheduled by the UL grant. Multiple RAR transmissions can schedule a single UL transmission at a specific time instance or different UL transmissions at different time intervals. The UE may report to the base station the best DL RAR transmission detected by the UE.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
5G | 29/05/2017 | ISLD-201705-030 | ERICSSON INC | Yes | Basis Patent |
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US9603165B2 | 5G | 29/05/2017 | ISLD-201705-030 | ERICSSON INC | Yes | Basis Patent | ||||
WO2016120761A1 | 5G | 29/05/2017 | ISLD-201705-030 | ERICSSON INC | No | Family Member | ||||
AU2016210926A1 | 5G | 29/05/2017 | ISLD-201705-030 | ERICSSON INC | No | Family Member | ||||
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Technologies
Random access
Beamforming
Product
Base Station (eNB/gNB)
Antenna
Access point
Use Cases
Services
Claim
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