US 10,951,360 B2Granted

Dynamic HARQ configuration and bitmap based ACK/NACK

AssigneeApple Inc.

InventorsJeongho Jeon, Abhijeet Bhorkar, Qiaoyang Ye, Fatemeh Hamidi-Sepehr, Hwan-Joon Kwon

Life of this patent

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Abstract

The present disclosure provides for a user equipment (UE) operating in an unlicensed spectrum in time division duplex (TDD). Operating a UE in an unlicensed spectrum in TDD can comprise generating a bitmap message. Generating a bitmap message can include accessing a bitmap comprising a plurality of positions based on a plurality of supported HARQ processes including the HARQ process, mapping a HARQ process identifier (ID) of the HARQ process to a position from the plurality of positions of the partitioned bitmap, and generating a bitmap message comprising the ACK/NACK message in the position of the bitmap corresponding to the HARQ process ID.

Claims14

Dependent claims

A base station operating in an unlicensed spectrum in time division duplex (TDD), comprising:

electronic memory to store a maximum channel occupancy time (MCOT);
and
one or more baseband processors configured to:
determine a quantity of subframes used in transmission bursts having the MCOT;
determine a maximum supported quantity of hybrid automatic repeat request (HARQ) processes based on the quantity of the subframes in the transmission bursts having the MCOT;
indicate, to a user equipment (UE), the maximum supported quantity of HARQ processes;
and
generate a first transmission burst of the transmission bursts having the MCOT, wherein the first transmission burst includes first messages each associated with one of a first plurality of HARQ processes and second messages each associated with one of a second plurality of HARQ processes, wherein a number of the first plurality of HARQ processes plus a number of the second plurality of HARQ processes is less than or equal to than the maximum supported quantity of HARQ processes.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/766,466Filed 9 Dec 2016 · us provisional application
Priority: 12 Jan 2016
Published: US 2018/0294924 A111 Oct 2018
Granted: 16 Mar 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04L 1/1812
Automatic repetition systems, e.g. Van Duuren systems: hybrid protocols; Hybrid automatic repeat request [HARQ]
H04L 1/1614
Details of the supervisory signal: using bitmaps
H04L 1/1822
Automatic repetition systems, e.g. Van Duuren systems: involving configuration of automatic repeat request [ARQ] with parallel processes
H04L 5/14
Arrangements affording multiple use of the transmission path: two-way operation using the same type of signal, i.e. duplex