US 10,833,825 B2Granted

Method, network device and terminal device for transmitting reference signal

AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.

InventorHai Tang

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Abstract

Disclosed are a method, a network device, and a terminal device for transmitting a reference signal. The method includes: determining, by the network device of the first cell, a first resource element corresponding to the first cell, and at least one second resource element corresponding to at least one second cell; determining, by the network device, a resource element with the largest time domain resource and a resource element with the largest frequency domain resource among the first resource element and the at least one second resource element; determining, by the network device, a reference signal resource according to the resource element with the largest time domain resource and the resource element with the largest frequency domain resource; and transmitting, by the network device, a reference signal to a terminal device on the reference signal resource.

Claims17

Dependent claims

A method for transmitting a reference signal, comprising:

determining, by a network device of a first cell, a first resource element corresponding to the first cell, and at least one second resource element corresponding to at least one second cell, wherein the first resource element has a time-frequency resource size different from that of the at least one second resource element;
determining, by the network device, a resource element with a largest time domain resource and a resource element with a largest frequency domain resource among the first resource element and the at least one second resource element;
determining, by the network device, a reference signal resource according to the resource element with the largest time domain resource and the resource element with the largest frequency domain resource;
and
transmitting, by the network device, a reference signal to a terminal device on the reference signal resource;
wherein the time domain resource size of the first resource element is equal to a sum of a symbol length and a cyclic prefix length in a numerology used by the first cell, and/or the frequency domain resource size of the first resource element is equal to a subcarrier spacing in the numerology used by the first cell;
and
the time domain resource size of each of the at least one second resource element is equal to a sum of a symbol length and a cyclic prefix length in a numerology used by a cell corresponding to the each of the at least one second resource element, and/or the frequency domain resource size of each of the at least one second resource element is equal to a subcarrier spacing in the numerology used by the cell corresponding to the each of the at least one second resource element.

5 more elements

A method for transmitting a reference signal, comprising:

determining, by a terminal device, a first resource element corresponding to a first cell;
determining, by the terminal device, a reference signal resource according to the first resource element, wherein a time domain resource size of the reference signal resource is equal to the time domain resource size of a largest time domain resource among the first resource element and at least one second resource element, or equal to an even multiple of the time domain resource size of the resource element with the largest time domain resource;
a frequency domain resource size of the reference signal resource is equal to the frequency domain resource size of a largest frequency domain resource among the first resource element and at least one second resource element, or equal to an even multiple of the frequency domain resource size of the resource element with the largest frequency domain resource, wherein the at least one second resource element is a resource element corresponding to at least one second cell;
and
receiving, by the terminal device, a reference signal transmitted on the reference signal resource from a network device in the first cell;
wherein the time domain resource size of the first resource element is equal to a sum of a symbol length and a cyclic prefix length in a numerology used by the first cell, and/or the frequency domain resource size of the first resource element is equal to a subcarrier spacing in the numerology used by the first cell;
and
the time domain resource size of each of the at least one second resource element is equal to a sum of a symbol length and a cyclic prefix length in a numerology used by a cell corresponding to the each of the at least one second resource element, and/or the frequency domain resource size of each of the at least one second resource element is equal to a subcarrier spacing in the numerology used by the cell corresponding to the each of the at least one second resource element.

5 more elements

A terminal device, comprises a processor, a receiver and a memory storing instructions thereon, the processor when executing the instructions, being configured to:

determine a first resource element corresponding to a first cell;
determine a reference signal resource according to the first resource element, wherein a time domain resource size of the reference signal resource is equal to the time domain resource size of a largest time domain resource among the first resource element and at least one second resource element, or equal to an even multiple of the time domain resource size of the resource element with the largest time domain resource;
a frequency domain resource size of the reference signal resource is equal to the frequency domain resource size of a largest frequency domain resource among the first resource element and at least one second resource element, or equal to an even multiple of the frequency domain resource size of the resource element with the largest frequency domain resource, wherein the at least one second resource element is a resource element corresponding to at least one second cell;
and
the receiver is configured to receive a reference signal transmitted on the reference signal resource from a network device in the first cell;
wherein the time domain resource size of the first resource element is equal to a sum of a symbol length and a cyclic prefix length in a numerology used by the first cell, and/or the frequency domain resource size of the first resource element is equal to a subcarrier spacing in the numerology used by the first cell;
and
the time domain resource size of each of the at least one second resource element is equal to a sum of a symbol length and a cyclic prefix length in a numerology used by a cell corresponding to the each of the at least one second resource element, and/or the frequency domain resource size of each of the at least one second resource element is equal to a subcarrier spacing in the numerology used by the cell corresponding to the each of the at least one second resource element.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/215,176Filed 10 Dec 2018 · continuation
Priority: 5 Sep 2016
Published: US 2019/0173639 A16 Jun 2019
Granted: 10 Nov 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04L 5/0048
Arrangements for allocating sub-channels of the transmission path: allocation of pilot signals, i.e. of signals known to the receiver
H04L 27/2605
Signal structure: symbol extensions, e.g. Zero Tail, Unique Word [UW]
H04W 72/04
Local resource management: wireless resource allocation
H04W 72/044
Wireless resource allocation: based on the type of the allocated resource