US 9,867,175 B2 · Transmit antenna diversity scheme

Abstract

Methods, systems, and devices are described for mapping, by a UE, uplink transmissions to one or more antennas of the UE. In one aspect, a UE may receive an uplink resource allocation identifying a set of resource blocks (RBs) from a base station. The UE may map subsets of the set of RBs to one or more of a plurality of antennas of the UE and transmit one or more uplink transmissions, using the subsets of the set of resource blocks, on the one or more antennas based at least in part on the mapping. Additionally, in some aspects, the UE may determine channel characteristics or CSI associated with the downlink from the base station and base the mapping of subsets of RBs to one or more antennas of the UE on the determined channel characteristics/CSI.

Claims26

Dependent claims

A method of wireless communication at a user equipment (UE), comprising:

receiving, from a base station, an uplink resource allocation comprising a set of resource blocks for the UE;
determining respective downlink channel characteristics for each antenna of a plurality of antennas of the UE, the downlink channel characteristics corresponding to the set of resource blocks;
mapping, based at least in part on the determined respective downlink channel characteristics, a first subset of the set of resource blocks to a first antenna of the plurality of antennas and a second subset of the set of resource blocks to a second antenna of the plurality of antennas, the first subset different from the second subset;
and
using at least one of the first subset and the second subset of the set of resource blocks to transmit one or more uplink transmissions on a respective antenna of the plurality of antennas based at least in part on the mapping.

2 more elements

An apparatus for wireless communication, comprising:

a processor;
memory in electronic communication with the processor;
and
instructions stored in the memory, the instructions being executable by the processor to:
receive, from a base station, an uplink resource allocation comprising a set of resource blocks;
determine respective downlink channel characteristics for each antenna of a plurality of antennas of the apparatus, the downlink channel characteristics corresponding to the set of resource blocks;
map, based at least in part on the determined respective downlink channel characteristics, a first subset of the set of resource blocks to a first antenna of the plurality of antennas and a second subset of the set of resource blocks to a second antenna of the plurality of antennas, the first subset different from the second subset;
and
use at least one of the first subset and the second subset of the set of resource blocks to transmit one or more uplink transmissions on a respective antenna of the plurality of antennas based at least in part on the mapping.

6 more elements

Dependencies are inferred from the claim text.

Transmit antenna diversity scheme

Life of this patent

Transmit antenna diversity scheme

Life of this patent

Abstract

Claims26