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US 11,146,372 B2Granted
Reference signal transmission method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsZhengwei Gong, Xiaojun Ma
Life of this patent
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Abstract
A reference signal transmission method and apparatus are provided. The method includes: receiving, by a first terminal, uplink reference signal configuration information from a base station, wherein the uplink reference signal configuration information comprises configuration information of a first-type reference signal and configuration information of a second-type reference signal that the first terminal needs to send; and sending, by the first terminal, a first-type reference signal and a second-type reference signal to the base station based on the uplink reference signal configuration information. The method can be applied for V2X (vehicle to X), and/or, sidelink transmission, and/or, D2D (device to device) communication.
Claims14
A reference signal transmission method, comprising:
- sending uplink reference signal configuration information to a first terminal;
- receiving an uplink reference signal from the first terminal based on the uplink reference signal configuration information;
- and
- sending downlink reference signal configuration information to a second terminal,
- wherein the uplink reference signal configuration information comprises configuration information of a sounding reference signal (SRS) and configuration information of a channel state information reference signal (CSI-RS), and wherein the configuration information of the CSI-RS includes code domain information that includes a sequence cyclic shift value, and wherein in response to the sequence shift value equaling 1, a generation sequence of the CSI-RS is a sequence obtained by performing a rightward cyclic shift by 1 bit based on the base sequence, and wherein in response to the sequence cyclic shift value equaling 2, the generation sequence of the CSI-RS is a sequence obtained by performing the rightward cyclic shift by 2 bits based on the base sequence, and wherein the downlink reference signal configuration information comprises configuration information of a to-be-measured CSI-RS, and wherein the to-be-measured CSI-RS includes both a CSI-RS sent by the first terminal to a base station and a CSI-RS sent by the base station to the second terminal, and
- receiving a measurement report from the second terminal.
3 more elements
A reference signal transmission method, comprising:
- receiving, by a first terminal, uplink reference signal configuration information from a base station, wherein the uplink reference signal configuration information comprises configuration information of a sounding reference signal (SRS) and configuration information of a channel state information reference signal (CSI-RS) that the first terminal needs to send, and wherein the configuration information of the CSI-RS includes code domain information that includes a sequence cyclic shift value, and wherein in response to the sequence shift value equaling 1, a generation sequence of the CSI-RS is a sequence obtained by performing a rightward cyclic shift by 1 bit based on the base sequence, and wherein in response to the sequence cyclic shift value equaling 2, the generation sequence of the CSI-RS is a sequence obtained by performing the rightward cyclic shift by 2 bits based on the base sequence;
- and
- sending, by the first terminal, the SRS and the CSI-RS signal to the base station based on the uplink reference signal configuration information,
- wherein the downlink reference signal configuration information comprises configuration information of a to-be-measured CSI-RS, and wherein the to-be-measured CSI-RS includes both a CSI-RS sent by the first terminal to the base station and a CSI-RS sent by the base station to the second terminal.
1 more element
A reference signal transmission method, comprising:
- receiving, by a second terminal, downlink reference signal configuration information from a base station, wherein the downlink reference signal configuration information comprises configuration information of a to-be-measured channel state information reference signal (CSI-RS), wherein the to-be-measured CSI-RS includes both a CSI-RS sent by a first terminal to the base station and a CSI-RS sent by the base station to the second terminal, and wherein the configuration information of the CSI-RS includes code domain information that includes a sequence cyclic shift value, and wherein in response to the sequence shift value equaling 1, a generation sequence of the CSI-RS is a sequence obtained by performing a rightward cyclic shift by 1 bit based on the base sequence, and wherein in response to the sequence cyclic shift value equaling 2, the generation sequence of the CSI-RS is a sequence obtained by performing the rightward cyclic shift by 2 bits based on the base sequence;
- performing, by the second terminal, downlink measurement based on the downlink reference signal configuration information;
- and
- reporting, by the second terminal, a measurement result to the base station.
1 more element
A reference signal transmission apparatus, wherein the apparatus is used for a base station, and the apparatus comprises:
- a transmitter, configured to send uplink reference signal configuration information to a first terminal;
- a receiver, configured to receive an uplink reference signal from the first terminal based on the uplink reference signal configuration information,
- wherein the transmitter is further configured to send downlink reference signal configuration information to a second terminal,
- wherein the uplink reference signal configuration information comprises configuration information of a sounding reference signal (SRS) and configuration information of a channel state information reference signal (CSI-RS), and wherein the configuration information of the CSI-RS includes code domain information that includes a sequence cyclic shift value, and wherein in response to the sequence shift value equaling 1, a generation sequence of the CSI-RS is a sequence obtained by performing a rightward cyclic shift by 1 bit based on the base sequence, and wherein in response to the sequence cyclic shift value equaling 2, the generation sequence of the CSI-RS is a sequence obtained by performing the rightward cyclic shift by 2 bits based on the base sequence, and, wherein the downlink reference signal configuration information comprises configuration information of a to-be-measured CSI-RS, and wherein the to-be-measured CSI-RS includes both a CSI-RS sent by the first terminal to the base station and a CSI-RS sent by the base station to the second terminal, and
- wherein the receiver is further configured to receive a measurement report from the second terminal.
2 more elements
A reference signal transmission apparatus, wherein the apparatus is used for a first terminal, and the apparatus comprises:
- a receiver, configured to receive uplink reference signal configuration information from a base station, wherein the uplink reference signal configuration information comprises configuration information of a sounding reference signal (SRS) and configuration information of a channel state information reference signal (CSI-RS) that the first terminal needs to send, and wherein the configuration information of the CSI-RS includes code domain information that includes a sequence cyclic shift value, and wherein in response to the sequence shift value equaling 1, a generation sequence of the CSI-RS is a sequence obtained by performing a rightward cyclic shift by 1 bit based on the base sequence, and wherein in response to the sequence cyclic shift value equaling 2, the generation sequence of the CSI-RS is a sequence obtained by performing the rightward cyclic shift by 2 bits based on the base sequence;
- and
- a transmitter, configured to send the SRS and the CSI-RS to the base station based on the uplink reference signal configuration information,
- wherein the downlink reference signal configuration information comprises configuration information of a to-be-measured CSI-RS, and wherein the to-be-measured CSI-RS includes both a CSI-RS sent by the first terminal to the base station and a CSI-RS sent by the base station to the second terminal.
1 more element
A reference signal transmission apparatus, wherein the apparatus is used for a second terminal, and the apparatus comprises:
- a receiver, configured to receive downlink reference signal configuration information from a base station, wherein the downlink reference signal configuration information comprises configuration information of a to-be-measured channel state information reference signal (CSI-RS), wherein the to-be-measured CSI-RS includes both a CSI-RS sent by a first terminal to the base station and a CSI-RS sent by the base station to the second terminal, and wherein the configuration information of the CSI-RS includes code domain information that includes a sequence cyclic shift value, and wherein in response to the sequence shift value equaling 1, a generation sequence of the CSI-RS is a sequence obtained by performing a rightward cyclic shift by 1 bit based on the base sequence, and wherein in response to the sequence cyclic shift value equaling 2, the generation sequence of the CSI-RS is a sequence obtained by performing the rightward cyclic shift by 2 bits based on the base sequence;
- a processor, configured to perform downlink measurement based on the downlink reference signal configuration information;
- and
- a transmitter, configured to report a measurement result to the base station.
1 more element
Dependencies are inferred from the claim text.