DMRS based DL for low latency

摘要

Methods, systems, and devices for wireless communication in a device are described. Demodulation reference signals (DMRS) can be used to enable low latency control or demodulation of data channels or both. The wireless communication device may, for example, identify a carrier configuration with transmission time intervals (TTIs) of different durations. The carrier may be configured with TTIs that support low latency operations. The DMRS pattern for the resources of the low latency TTI may be determined, and the first DMRS pattern may be based on the DMRS pattern for other, longer duration TTI''s resources. Thus, devices may communicate using resources of low latency TTI based on the first DMRS pattern. For example, a user equipment (UE) can demodulate low latency channel resources using a first DMRS pattern, where the first DMRS pattern matches DMRS patterns supporting non-low latency in a common wireless system. can do.