US 2017/0257194 A1 · PILOT SIGNAL GENERATION METHOD AND APPARATUS

Abstract

Embodiments of the present invention provide a pilot signal generation method and apparatus, so as to implement sharing of one pilot by multiple UEs when it is ensured that each of the multiple UEs can correctly obtain a data stream, thereby reducing pilot overheads. The method includes: determining a first pilot signal shared by multiple UEs, where the multiple UEs are multiple UEs transmitting data streams on a same time-frequency resource; determining a pilot precoding vector of first UE and a data stream receiving gain of the first UE according to current downlink channel information of the multiple UEs, where the first UE is one of the multiple UEs; and generating, according to the first pilot signal, the data stream receiving gain of the first UE, and the pilot precoding vector of the first UE, a second pilot signal that is to be sent to the first UE.

Claims15

Dependent claims

A pilot signal generation method, comprising:

determining a first pilot signal shared by multiple user equipments (UEs), wherein the multiple UEs are multiple UEs transmitting data streams on a same time-frequency resource;
determining a pilot precoding vector of first UE and a data stream receiving gain of the first UE according to current downlink channel information of the multiple UEs, wherein the first UE is one of the multiple UEs;
and
generating, according to the first pilot signal, the data stream receiving gain of the first UE, and the pilot precoding vector of the first UE, a second pilot signal that is to be sent to the first UE.

1 more element

A pilot signal generation apparatus, comprising:

a determining unit, configured to:
determine a first pilot signal shared by multiple user equipments (UEs), wherein the multiple UEs are multiple UEs transmitting data streams on a same time-frequency resource;
and determine a pilot precoding vector of first UE and a data stream receiving gain of the first UE according to current downlink channel information of the multiple UEs, wherein the first UE is one of the multiple UEs;
and
a generation unit, configured to generate, according to the first pilot signal, the data stream receiving gain of the first UE, and the pilot precoding vector of the first UE that are determined by the determining unit, a second pilot signal that is to be sent to the first UE.

2 more elements

A base station, comprising:

a processor, configured to:
determine a first pilot signal shared by multiple user equipments (UEs), wherein the multiple UEs are multiple UEs transmitting data streams on a same time-frequency resource;
determine a pilot precoding vector of first UE and a data stream receiving gain of the first UE according to current downlink channel information of the multiple UEs, wherein the first UE is one of the multiple UEs;
and generate, according to the first pilot signal, the data stream receiving gain of the first UE, and the pilot precoding vector of the first UE, a second pilot signal that is to be sent to the first UE.

1 more element

Dependencies are inferred from the claim text.

Pilot signal generation method and apparatus

Life of this patent

Pilot signal generation method and apparatus

Life of this patent

Abstract

Claims15