US 10,314,037 B2 · Latency reduction techniques in wireless communications

Abstract

Methods, systems, and devices for wireless communication are described that provide for reduced timing between certain downlink communications and responsive uplink communications relative to certain legacy systems (e.g., legacy LTE systems). A user equipment (UE) or base station may be capable of operating using two or more timing configurations that each include an associated time period between receipt of a downlink communication (e.g., a grant of uplink resources or shared channel data) and a responsive uplink communication (e.g., an uplink transmission using the granted uplink resources or feedback of successful reception of the shared channel data). In cases where a UE or base station are capable of two or more timing configurations, a timing configuration for a transmission may be determined and the responsive uplink communication transmitted according to the determined timing configuration.

Claims70

Dependent claims

A method for wireless communication, comprising:

determining whether to use a first timing configuration or a second timing configuration for transmissions, the first timing configuration including a first time difference between a downlink communication and a responsive uplink communication, and the second timing configuration including a second time difference between the downlink communication and the responsive uplink communication, the second time difference being less than the first time difference and the second timing configuration being associated with a periodicity for updating channel state information (CSI), and wherein the determination is based at least in part on a capability of a user equipment (UE) to transmit the responsive uplink communication within the first time difference or the second time difference;
and
transmitting according to the first timing configuration or the second timing configuration based on the determination.

An apparatus for wireless communication, in a system comprising:

a processor;
memory in electronic communication with the processor;
and
instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
determine whether to use a first timing configuration or a second timing configuration for transmissions, the first timing configuration including a first time difference between a downlink communication and a responsive uplink communication, and the second timing configuration including a second time difference between the downlink communication and the responsive uplink communication, the second time difference being less than the first time difference and the second timing configuration being associated with a periodicity for updating channel state information (CSI), and wherein the determination is based at least in part on a capability of a user equipment (UE) to transmit the responsive uplink communication within the first time difference or the second time difference;
and
transmit according to the first timing configuration or the second timing configuration based on the determination.

4 more elements

Dependencies are inferred from the claim text.

Latency reduction techniques in wireless communications

Life of this patent

Latency reduction techniques in wireless communications

Life of this patent

Abstract

Claims70