CN111819810A

CN111819810A - Method and device for processing a direct current carrier

Info

Publication number: CN111819810A
Application number: CN201980013852.5A
Authority: CN
Inventors: 黎超; 张福强; 李溪野
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2020-10-23
Anticipated expiration: 2039-01-28
Also published as: WO2020154863A1; CN111819810B

Abstract

The embodiment of the application discloses a method and a device for processing a direct current carrier, relates to the technical field of communication, and can solve the problems of scheduling limitation or transmission performance reduction caused by mismatching of a DC carrier of a signal transmitted by a base station and a DC carrier of a signal received by UE (user equipment) because the DC carrier of the signal transmitted by the base station is different from the DC carrier of the signal received by the UE and the base station does not know the position of the DC carrier of the signal received by the UE. The method comprises the following steps: the first device receiving a first signal from a second device; the first device determines whether a resource occupied by the first signal overlaps with a Direct Current (DC) carrier set when the first device receives the first signal; if yes, the first device sets a bit value of a resource RE corresponding to a subcarrier overlapped with the DC carrier in a resource occupied by the second signal to be received to be 0. The embodiment of the application is used for transmitting signals in an NR system.

Description

PCT国内申请，说明书已公开。PCT domestic application, the description has been published.

Claims

A method for processing a direct current carrier, the method comprising:

the first device receiving a first signal from a second device;

the first device determines whether a resource occupied by the first signal overlaps with a Direct Current (DC) carrier set when the first device receives the first signal;

if so, the first device sets a bit value of a resource RE corresponding to a subcarrier overlapped with the DC carrier in a resource occupied by the second signal to be received to 0.
The method of claim 1, further comprising:

the first device sends, to the second device, location information of a DC carrier on which the first device receives the first signal.
The method according to claim 1 or 2, wherein if the first device determines that the resource occupied by the first signal overlaps with a direct current DC carrier set when the first device receives the first signal, before the first device sets a bit value of a resource RE corresponding to a subcarrier overlapping with the DC carrier in a resource occupied by a second signal to be received to 0, the method further comprises:

and the first device determines whether to set the bit value of the resource RE corresponding to the DC carrier in the resource occupied by the second signal to be received to 0 according to the resource occupied by the first signal.
The method according to any one of claims 1-3, wherein when the first signal is a reference signal, RS, the RS comprises a phase tracking reference signal, PTRS, or a demodulation reference signal, DMRS;

the resource occupied by the RS comprises at least one of the following:

configuration parameters of the RS and signal characteristics on resources of the DC carrier occupied by the RS.
The method of claim 4, wherein the configuration parameters of the RS comprise at least one of:

the bandwidth occupied by the RS, the subcarrier interval occupied by the RS and the transmission period of the RS.
The method of claim 4, wherein the signal characteristic comprises at least one of:

the modulation coding scheme MCS of the signal, the number of symbols occupied by the signal, the bandwidth occupied by the signal, the subcarrier interval of the signal and the transmission period of the signal.
The method according to claim 5, wherein the determining, by the first device according to the resource occupied by the first signal, whether to set the bit value of the resource RE corresponding to the DC carrier in the resource occupied by the second signal to be received to 0 includes:

if it is determined that at least one of the bandwidth occupied by the RS, the subcarrier interval occupied by the RS, and the transmission period of the RS is less than or equal to a preset threshold, the first device determines to set a bit value of a resource RE corresponding to the DC carrier in a resource occupied by the second signal to be received to 0.
The method according to claim 6, wherein the determining, by the first device according to the resource occupied by the first signal, whether to set the bit value of the resource RE corresponding to the DC carrier in the resource occupied by the second signal to be received to 0 includes:

if the number of symbols occupied by the signal, the bandwidth occupied by the signal, the subcarrier interval of the signal, and the transmission cycle of the signal are determined to be less than or equal to a preset threshold, or if the MCS is determined to be greater than or equal to the preset threshold, the first device determines to set a bit value of a resource RE corresponding to the DC carrier in the resource occupied by the second signal to be received to 0.
The method according to any of claims 1-8, characterized in that the first signal and the second signal are transmitted in a new air interface, NR, system.
A method for processing a direct current carrier, the method comprising:

the first device sends a first signal to the second device;

the first device determines whether a resource occupied by the first signal overlaps with a Direct Current (DC) carrier set when the first device transmits the first signal;

if so, the first device sets a bit value of a resource RE corresponding to a subcarrier overlapping with the DC carrier in a resource occupied by a second signal to be transmitted to 0.
The method according to claim 10, wherein if the first device determines that the resource occupied by the first signal overlaps with a direct current DC carrier set when the first device transmits the first signal, before the first device sets a bit value of a resource RE corresponding to a subcarrier overlapping with the DC carrier in a resource occupied by a second signal to be transmitted to be 0, the method further comprises:

and the first device determines whether to set the bit value of the resource RE corresponding to the DC carrier in the resource occupied by the second signal to be sent to be 0 according to the resource occupied by the first signal.
The method according to claim 10 or 11, wherein when the first signal is a reference signal, RS, the RS comprises a phase tracking reference signal, PTRS, or a demodulation reference signal, DMRS;

the resource occupied by the RS comprises at least one of the following:

configuration parameters of the RS and signal characteristics on resources of the DC carrier occupied by the RS.
The method of claim 12, wherein the configuration parameters of the RS comprise at least one of:

the bandwidth occupied by the RS, the subcarrier interval occupied by the RS and the transmission period of the RS.
The method of claim 12, wherein the signal characteristic comprises at least one of:

the modulation coding scheme MCS of the signal, the number of symbols occupied by the signal, the bandwidth occupied by the signal, the subcarrier interval of the signal and the transmission period of the signal.
The method according to claim 13, wherein the determining, by the first device, whether to set the bit value of the resource RE corresponding to the DC carrier in the resource occupied by the second signal to be sent to be 0 according to the resource occupied by the first signal comprises:

if it is determined that at least one of the bandwidth occupied by the RS, the subcarrier spacing occupied by the RS, and the transmission period of the RS is less than or equal to a preset threshold, the first device determines to set a bit value of a resource RE corresponding to the DC carrier in a resource occupied by the second signal to be transmitted to 0.
The method according to claim 14, wherein the determining, by the first device, whether to set the bit value of the resource RE corresponding to the DC carrier in the resource occupied by the second signal to be sent to be 0 according to the resource occupied by the first signal comprises:

if the number of symbols occupied by the signal, the bandwidth occupied by the signal, the subcarrier interval of the signal, and the transmission cycle of the signal are determined to be less than or equal to a preset threshold, or if the MCS is determined to be greater than or equal to the preset threshold, the first device determines to set a bit value of a resource RE corresponding to the DC carrier in a resource occupied by the second signal to be sent to be 0.
The method according to any of claims 10-16, characterized in that the first signal and the second signal are transmitted in a new air interface, NR, system.
An apparatus, the apparatus being a first apparatus, comprising:

a transceiver for receiving a first signal from a second device;

a processor configured to determine whether a resource occupied by the first signal overlaps with a Direct Current (DC) carrier set when the first device receives the first signal;

the processor is further configured to, if the determination is yes, set a bit value of a resource RE corresponding to a subcarrier overlapping the DC carrier in a resource occupied by the second signal to be received to 0.
The device of claim 18, wherein the transceiver is configured to:

transmitting, to the second device, location information of a DC carrier on which the first device receives the first signal.
The apparatus of claim 18 or 19, wherein the processor is further configured to:

and determining whether to set the bit value of the resource RE corresponding to the DC carrier in the resource occupied by the second signal to be received as 0 or not according to the resource occupied by the first signal.
The apparatus of any one of claims 18-20, wherein when the first signal is a reference signal, RS, the RS comprises a phase tracking reference signal, PTRS, or a demodulation reference signal, DMRS;

the resource occupied by the RS comprises at least one of the following:

configuration parameters of the RS and signal characteristics on resources of the DC carrier occupied by the RS.
The apparatus of claim 21, wherein the configuration parameters of the RS comprise at least one of:

the bandwidth occupied by the RS, the subcarrier interval occupied by the RS and the transmission period of the RS.
The apparatus of claim 21, wherein the signal characteristic comprises at least one of:

the modulation coding scheme MCS of the signal, the number of symbols occupied by the signal, the bandwidth occupied by the signal, the subcarrier interval of the signal and the transmission period of the signal.
The device of claim 22, wherein the processor is configured to:

and if at least one of the bandwidth occupied by the RS, the subcarrier interval occupied by the RS and the transmission period of the RS is determined to be less than or equal to a preset threshold, setting a bit value of a resource RE corresponding to the DC carrier in the resource occupied by the second signal to be received to be 0.
The device of claim 23, wherein the processor is configured to: and if the number of symbols occupied by the signal, the bandwidth occupied by the signal, the subcarrier interval of the signal and the transmission cycle of the signal are determined to be less than or equal to a preset threshold, or if the MCS is determined to be greater than or equal to the preset threshold, determining to set the bit value of the resource RE corresponding to the DC carrier in the resource occupied by the second signal to be received to be 0.
The apparatus of any of claims 18-25, wherein the first signal and the second signal are transmitted in a new air interface, NR, system.
An apparatus, the apparatus being a first apparatus, comprising:

a transceiver for transmitting a first signal to a second device;

a processor, configured to determine whether a resource occupied by the first signal overlaps with a Direct Current (DC) carrier set when the first device transmits the first signal;

the processor is further configured to set a bit value of a resource RE corresponding to a subcarrier overlapping the DC carrier in a resource occupied by the second signal to be transmitted to 0 if the determination is yes.
The device of claim 27, wherein the processor is configured to:

and determining whether to set the bit value of the resource RE corresponding to the DC carrier in the resource occupied by the second signal to be sent to be 0 according to the resource occupied by the first signal.
The apparatus of claim 27 or 28, wherein when the first signal is a reference signal, RS, the RS comprises a phase tracking reference signal, PTRS, or a demodulation reference signal, DMRS;

the resource occupied by the RS comprises at least one of the following:

configuration parameters of the RS and signal characteristics on resources of the DC carrier occupied by the RS.
The apparatus of claim 29, wherein the configuration parameters of the RS comprise at least one of:

the bandwidth occupied by the RS, the subcarrier interval occupied by the RS and the transmission period of the RS.
The apparatus of claim 29, wherein the signal characteristic comprises at least one of:

the modulation coding scheme MCS of the signal, the number of symbols occupied by the signal, the bandwidth occupied by the signal, the subcarrier interval of the signal and the transmission period of the signal.
The device of claim 30, wherein the processor is configured to:

and if at least one of the bandwidth occupied by the RS, the subcarrier interval occupied by the RS and the transmission period of the RS is determined to be less than or equal to a preset threshold, setting a bit value of a resource RE corresponding to the DC carrier in the resource occupied by the second signal to be sent to be 0.
The device of claim 31, wherein the processor is configured to:

and if the number of symbols occupied by the signal, the bandwidth occupied by the signal, the subcarrier interval of the signal and the transmission cycle of the signal are determined to be less than or equal to a preset threshold, or if the MCS is determined to be greater than or equal to the preset threshold, determining to set a bit value of a resource RE corresponding to the DC carrier in the resource occupied by the second signal to be sent to be 0.
The apparatus of any of claims 27-33, wherein the first signal and the second signal are transmitted in a new air interface, NR, system.