US 9,883,454 B2 · Feedback message alignment for multicarrier systems with flexible bandwidth carrier

Abstract

Methods, systems, and devices are provided for signaling alignment for multicarrier systems that may utilize one or more flexible bandwidth carriers. Tools and techniques are provided that may help ensure signaling alignment with respect to feedback messages, such as ACK/NACK messages, in multicarrier systems that may utilize one or more flexible bandwidth carriers and/or systems that may utilize multiple different flexible bandwidth carriers. Some methods may include identifying timing for one or more subframes that carry one or more feedback messages for a first cell; and/or adjusting a timing for one or more subframes that carry one or more feedback messages for a second cell to align with the one or more subframes that carry the one or more feedback messages for the first cell. The first cell and/or the second cell may include at least one of the one or more flexible bandwidth carriers.

Claims32

Dependent claims

A method of signaling alignment for a wireless communication device in a multicarrier system utilizing one or more flexible bandwidth carriers, the method comprising:

identifying a timing for one or more subframes carrying one or more acknowledgment or negative-acknowledgment messages for a first cell;
and
adjusting a timing for one or more subframes carrying one or more acknowledgment or negative-acknowledgment messages for a second cell to align with the one or more subframes carrying the one or more acknowledgment or negative-acknowledgment messages for the first cell and to reduce a delay for the one or more acknowledgment or negative-acknowledgment messages for the second cell relative to a standalone carrier cell, wherein at least the first cell or the second cell comprises at least one of the one or more flexible bandwidth carriers, wherein a flexible bandwidth of the one or more flexible bandwidth carriers is scaled by a scaling factor with respect to a normal bandwidth system.

A non-transitory computer-readable medium storing code for signaling alignment in a wireless communications system, the code comprising instructions executable by a processor to:

identify a timing for one or more subframes carrying one or more acknowledgment or negative-acknowledgment messages for a first cell;
and
adjust a timing for one or more subframes carrying one or more acknowledgment or negative-acknowledgment messages for a second cell to align with the one or more subframes carrying the one or more acknowledgment or negative-acknowledgment messages for the first cell and to reduce a delay for the one or more acknowledgment or negative-acknowledgment messages for the second cell relative to a standalone carrier cell, wherein at least the first cell or the second cell comprises at least one of one or more flexible bandwidth carriers, wherein a flexible bandwidth of the one or more flexible bandwidth carriers is scaled by a scaling factor with respect to a normal bandwidth system.

A wireless communications device configured for signaling alignment in a wireless communications system, the wireless communications device comprising:

at least one processor;
memory in electronic communication with the at least one processor;
and
instructions stored in the memory and operable, when executed by the at least one processor, to cause the wireless communications device to;
identify a timing for one or more subframes carrying one or more acknowledgment or negative-acknowledgment messages for a first cell;
and
adjust a timing for one or more subframes carrying one or more acknowledgment or negative-acknowledgment messages for a second cell to align with the one or more subframes carrying the one or more acknowledgment or negative-acknowledgment messages for the first cell and to reduce a delay for the one or more acknowledgment or negative-acknowledgment messages for the second cell relative to a standalone carrier cell, wherein at least the first cell or the second cell comprises at least one of one or more flexible bandwidth carriers, wherein a flexible bandwidth of the one or more flexible bandwidth carriers is scaled by a scaling factor with respect to a normal bandwidth system.

4 more elements

Dependencies are inferred from the claim text.

Feedback message alignment for multicarrier systems with flexible bandwidth carrier

Life of this patent

Feedback message alignment for multicarrier systems with flexible bandwidth carrier

Life of this patent

Abstract

Claims32