CN109787712B - Method for sending and receiving uplink control information, terminal and network equipment - Google Patents
Method for sending and receiving uplink control information, terminal and network equipment Download PDFInfo
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- CN109787712B CN109787712B CN201711132196.XA CN201711132196A CN109787712B CN 109787712 B CN109787712 B CN 109787712B CN 201711132196 A CN201711132196 A CN 201711132196A CN 109787712 B CN109787712 B CN 109787712B
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Abstract
The invention discloses a method for sending and receiving uplink control information, a terminal and network equipment, wherein the method for sending the uplink control information comprises the following steps: inserting uplink control information UCI into a symbol for transmitting uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to time domain positions of a demodulation reference signal DMRS and the PTRS; transmitting the UCI at the time-domain location where the UCI is inserted. The scheme of the invention can effectively ensure the demodulation accuracy of UCI, and can simultaneously utilize the accuracy of DMRS channel estimation and the accuracy of PTRS phase noise estimation.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method, a terminal, and a network device for transmitting and receiving uplink control information.
Background
In a communication system, such as a 4G communication system and a 5G communication system, a user needs to feed back some Information to a base station, and the Information fed back is generally referred to as Uplink Control Information (UCI). The UCI in 5G typically contains the following information:
1. scheduling Request (SR);
2. hybrid Automatic Repeat reQuest (HARQ) ACK/NACK;
3. channel State Information (CSI);
4. beam management/recovery related information (Beam management/recovery related information).
In addition, the priority (priority) of different information in UCI is different, and generally, the priority of HARQ ACK/NACK is the highest, and the CSI is lower when SR is the second information related to beam management/recovery. The priority here refers to the importance of UCI information, and higher importance indicates higher required demodulation accuracy.
The UCI may be transmitted on a PUCCH (physical uplink control channel) or a PUSCH (physical uplink shared channel) for transmitting uplink control signaling, and when the UCI is transmitted on the PUSCH, the UCI and the uplink data channel are multiplexed and then transmitted, which is beneficial to keep low PAPR (Peak to Average Power Ratio) and small intermodulation distortion of the uplink transmission signal, which is very helpful for an uplink DFT-s-OFDM system (Discrete Fourier Transform-Spread OFDM, i.e., Discrete Fourier Transform Spread OFDM system) to cover, because when the UCI is transmitted on the PUCCH, the PUCCH and the PUSCH are transmitted in a frequency division multiplexing manner, which will raise PAPR of the transmission signal and increase intermodulation distortion, both of which require larger Power backoff, and this will result in coverage reduction.
On the other hand, 5G will support full band access for low frequencies (less than 6GHz band) + high frequencies (6GHz-100 GHz). Phase noise is due to local oscillator non-idealities. Random fluctuations in the output value of a frequency source caused by random white noise, flicker noise, etc. inside the frequency source are called phase noise, and describe all the causes of output frequency variation in a short time, which is a measure of the signal sideband frequency spectrum noise. In a real environment, phase noise cannot be avoided in the output process of a frequency source, and the problem of phase noise in a high frequency band is very prominent. Compared with a low-frequency-band communication system smaller than 6GHz, the 6GHz-100GHz high-frequency-band communication system has the advantages that the frequency multiplication frequency of a reference clock source is greatly increased, and the phase noise is correspondingly and greatly increased due to the influence factors such as the process level and the power consumption of a high-frequency device. The phase noise may deteriorate SNR (signal to noise ratio) or EVM (error vector magnitude) at the receiving end, causing a large amount of bit errors, thereby directly limiting the use of high-order constellation modulation and seriously affecting the system capacity.
Therefore, 5G introduces Phase-Tracking Reference Signal (PTRS) exclusively for high-band communication, and is used for estimation and compensation of Phase noise, Carrier Frequency Offset (CFO), Doppler shift (Doppler shift). Since phase noise is a combined effect caused by instability of both base station and user side frequency sources, PTRS is required both upstream and downstream.
As shown in fig. 1, when DFT-s-OFDM is used for the uplink waveform of 5G high frequency communication, both PTRS and UCI are inserted in the time domain before DFT operation (i.e., Pre-DFT) at the transmitting end.
PTRS are inserted in a block-like manner in the Pre-DFT, called chunk-based, i.e. several PTRSs are consecutive in time domain, called a group of chunks, and then several groups of chunks within one DFT-s-OFDM symbol length.
Let the number of chunk be X, and the number of consecutive PTRS in chunk be K, then when X is 2 and K is 4, insert PTRS in one DFT-s-OFDM symbol length as shown in fig. 2;
in the LTE system, the time domain position of UCI is close to the time domain position of DMRS (demodulation reference signal) to ensure the optimal demodulation performance of UCI.
5G proposes the concept of PTRS (phase tracking reference signal) which is used for estimation and compensation of phase noise, carrier frequency offset. When the DFT-s-OFDM is adopted for the uplink waveform of 5G high-frequency communication, PTRS and UCI are both placed at time domain positions before DFT (discrete Fourier transform) operation is carried out on a transmitting end. However, how to design the temporal location of the UCI is a problem to be solved.
Disclosure of Invention
The invention provides a method for sending and receiving uplink control information, a terminal and network equipment. The demodulation accuracy of UCI can be effectively ensured, and the accuracy of DMRS channel estimation and the accuracy of PTRS phase noise estimation can be simultaneously utilized.
To solve the above technical problem, an embodiment of the present invention provides the following solutions:
a method for sending uplink control information comprises the following steps:
inserting uplink control information UCI into a symbol for transmitting uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to time domain positions of a demodulation reference signal DMRS and the PTRS;
transmitting the UCI at the time-domain location where the UCI is inserted.
The step of inserting uplink control information UCI into the time domain position adjacent to the time domain position of the phase tracking reference signal PTRS or the time domain position adjacent to the time domain positions of the demodulation reference signals DMRS and PTRS comprises the following steps:
and inserting uplink control information UCI at the time domain position adjacent to the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS according to the priority of the UCI.
Wherein the priority of the UCI comprises a plurality of different priorities;
according to the priority of the UCI, the step of inserting the UCI into the time domain position adjacent to the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS comprises the following steps:
in the UCIs with different priorities, inserting the UCI with a first priority into the time domain position of the PTRS or the time domain position adjacent to the time domain positions of the DMRS and the PTRS, and inserting the UCI with a second priority into the time domain position adjacent to the time domain position where the UCI with the first priority is located; the first priority is greater than the second priority, and the first priority and the second priority are respectively any one of the plurality of different priorities.
The time domain position for inserting the UCI comprises a plurality of time domain sampling points for transmitting the UCI, and the plurality of time domain sampling points for transmitting the UCI are inserted near the time domain position of the phase tracking reference signal PTRS or near the time domain positions of the demodulation reference signals DMRS and PTRS in a centralized or distributed mapping mode on the time domain position adjacent to the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS.
Wherein, in a symbol of the system frame for transmitting uplink control information UCI, if an original time domain position where the UCI is located is a fixed position, the method further includes:
shifting a time domain position with an offset in the direction of the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS from the original time domain position of the UCI as the time domain position of the UCI; and the offset is less than or equal to the original time domain position of the UCI and the time domain position of the PTRS or the time domain position number between the DMRS and the time domain position of the PTRS.
The offset is indicated through an indication signaling sent by the network equipment, and the indication signaling includes: radio Resource Control (RRC) signaling, Medium Access Control (MAC) control unit (MAC CE) signaling and/or Downlink Control Information (DCI) signaling.
The method for sending the uplink control information further comprises the following steps: and if the UCI overlaps or collides with the time domain position of the PTRS at the time domain position of the symbol, shifting the time domain position of the UCI and/or shifting the time domain position of the PTRS, or deleting the overlapping or colliding part of the UCI and the PTRS and/or deleting the overlapping or colliding part of the PTRS and the UCI.
The method for sending the uplink control information further comprises the following steps: receiving an indication signaling sent by a network device, wherein the indication signaling is used for indicating a time domain position of UCI in a symbol used for sending uplink control information UCI in the system frame; or
The time domain position of the UCI in the symbol for transmitting the uplink control information UCI is preset.
Wherein the indication signaling comprises: radio Resource Control (RRC) signaling, Medium Access Control (MAC) control unit (MAC CE) signaling and/or Downlink Control Information (DCI) signaling.
An embodiment of the present invention further provides a terminal, including:
a processor, configured to insert uplink control information UCI in a symbol used for transmitting uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to time domain positions of demodulation reference signals DMRS and PTRS;
a transceiver for transmitting the UCI at the time-domain location where the UCI is inserted.
The processor is further configured to insert uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to time domain positions of demodulation reference signals DMRS and PTRS according to the priority of the UCI.
Wherein the priority of the UCI comprises a plurality of different priorities; the processor is specifically configured to insert, in multiple UCIs of different priorities, a UCI of a first priority at a time domain position of the PTRS or at a time domain position adjacent to the time domain positions of the DMRS and the PTRS, and insert a UCI of a second priority at a time domain position adjacent to the time domain position where the UCI of the first priority is located; the first priority is greater than the second priority, and the first priority and the second priority are respectively any one of the plurality of different priorities.
The time domain position for inserting the UCI comprises a plurality of time domain sampling points for transmitting the UCI, and the plurality of time domain sampling points for transmitting the UCI are inserted near the time domain position of the phase tracking reference signal PTRS or near the time domain positions of the demodulation reference signals DMRS and PTRS in a centralized or distributed mapping mode on the time domain position adjacent to the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS.
In a symbol of the system frame, which is used for transmitting uplink control information UCI, if an original time domain position where the UCI is located is a fixed position, the processor is further configured to shift, from the original time domain position of the UCI, an offset time domain position in a direction of a time domain position of a phase tracking reference signal PTRS or time domain positions of demodulation reference signals DMRS and PTRS as the time domain position of the UCI; and the offset is less than or equal to the original time domain position of the UCI and the time domain position of the PTRS or the time domain position number between the DMRS and the time domain position of the PTRS.
The offset is indicated through an indication signaling sent by the network equipment, and the indication signaling includes: radio Resource Control (RRC) signaling, Medium Access Control (MAC) control unit (MAC CE) signaling and/or Downlink Control Information (DCI) signaling.
The processor is further configured to shift a time domain position of the UCI and/or shift a time domain position of the PTRS when the time domain position of the symbol overlaps or collides with the time domain position of the PTRS, or delete an overlapping or colliding portion of the UCI and the PTRS and/or delete an overlapping or colliding portion of the PTRS and the UCI.
The transceiver is further configured to receive an indication signaling sent by a network device, where the indication signaling is used to indicate a time domain position of the UCI in a symbol used for sending uplink control information UCI.
The embodiment of the invention also provides a method for receiving uplink control information, which comprises the following steps:
transmitting scheduling information of uplink control information UCI to a terminal; the scheduling information is used for enabling the terminal to insert uplink control information UCI into a symbol used for sending the uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position of a demodulation reference signal DMRS and the time domain position of the PTRS;
and receiving the UCI transmitted by the terminal at the time domain position inserted with the UCI.
An embodiment of the present invention further provides a network device, including:
a transmitter, configured to send scheduling information of uplink control information UCI to a terminal; the scheduling information is used for enabling the terminal to insert uplink control information UCI into a symbol used for sending the uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position of a demodulation reference signal DMRS and the time domain position of the PTRS;
and the receiver is used for receiving the UCI transmitted by the terminal at the time domain position inserted into the UCI.
An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above.
Embodiments of the present invention also provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.
The scheme of the invention at least comprises the following beneficial effects:
in the above scheme of the present invention, in a symbol for transmitting uplink control information UCI, for example, in a symbol for transmitting uplink control information UCI of a system frame, the uplink control information UCI is inserted in a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to time domain positions of demodulation reference signals DMRS and PTRS; transmitting the UCI at the time-domain location where the UCI is inserted. Therefore, the demodulation accuracy of UCI is effectively ensured, and the accuracy of DMRS channel estimation and the accuracy of PTRS phase noise estimation can be simultaneously utilized.
Drawings
FIG. 1 is a diagram of the DFT-s-OFDM system uplink transmission processing
Fig. 2 is a schematic diagram illustrating the insertion of PTRS in one DFT-s-OFDM symbol length when X is 2 and K is 4;
fig. 3 is a flowchart illustrating a method for sending uplink control information according to an embodiment of the present invention;
fig. 4 is a schematic diagram of UCI insertion in the case where 4 PTRS emission patterns are given from top to bottom in one DFT-s-OFDM symbol length when X is 2 and K is 2, while being close to DMRS and PTRS;
fig. 5 is a schematic diagram of UCI insertion in DFT-s-OFDM symbols far from DMRSs in 4 PTRS discharge patterns given from top to bottom when X is 2 and K is 2;
fig. 6 is a schematic diagram of UCI offset when X is 2 and K is 2;
fig. 7 is a schematic diagram of UCI insertion near the time domain location of DMRS;
fig. 8 is another diagram of UCI insertion near a time domain location of DMRS.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In 5G communication, the position of DMRS is changed, namely front-loaded DMRS is introduced, namely the DMRS is placed at the initial position of a subframe to ensure rapid demodulation, and additional DMRS (additional DMRS) can be introduced to track rapid change of a channel in high-speed movement. Meanwhile, in high-frequency communication of more than 6GHz, PTRS is specially introduced by 5G to track the phase change.
The embodiment of the invention provides a UCI (uplink control information) sending method aiming at the problem of UCI sending in an uplink DFT-s-OFDM system of 5G NR high-frequency band communication.
As shown in fig. 3, an embodiment of the present invention provides a method for sending uplink control information, including:
and 42, transmitting the UCI at the time domain position inserted with the UCI.
According to the scheme of the invention, in the symbol for sending the uplink control information UCI, the uplink control information UCI is inserted into the time domain position adjacent to the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS; transmitting the UCI at the time-domain location where the UCI is inserted. Therefore, the demodulation accuracy of UCI is effectively ensured, and the accuracy of DMRS channel estimation and the accuracy of PTRS phase noise estimation can be simultaneously utilized.
In this embodiment of the present invention, step 31 may be specifically implemented by the following steps:
inserting uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to a time domain position of a demodulation reference signal DMRS and the PTRS according to the priority of the UCI;
as shown in fig. 4, according to the priority of information contained in UCI, UCI is simultaneously placed close to DMRS and PTRS; in fig. 4, 4 PTRS drainage patterns are shown from top to bottom, where the PTRS is located in time domain positions including: the starting and ending positions of one DFT-s-OFDM symbol; the middle and end positions of one DFT-s-OFDM symbol; the starting and middle positions of one DFT-s-OFDM symbol; and dividing one DFT-s-OFDM symbol into X equal parts and then placing the PTRS at the middle of each equal part.
In the figure, the time domain positions of UCI in the 4 PTRS emission patterns are located: time domain locations adjacent to the PTRS and/or to the DMRS and PTRS, where the time domain location is one time domain sample point in one DFT-s-OFDM symbol shown in the figure, and in addition, the figure is an example, several PTRS are called a set of chunks, and then several sets of chunks within one DFT-s-OFDM symbol length. Let the number of chunk groups be X and the number of consecutive PTRS in a group be K, then X is 2 and K is 2, but the arrangement of PTRS and UCI is not limited to this.
Specifically, in the UCIs with different priorities, the UCI with the first priority is inserted into the time domain position of the PTRS or the time domain position adjacent to the time domain positions of the DMRS and the PTRS, and the UCI with the second priority is inserted into the time domain position adjacent to the time domain position where the UCI with the first priority is located; the first priority is greater than the second priority, and the first priority and the second priority are respectively any one of a plurality of different priorities. That is, the higher the priority of UCI, the closer to DMRS and/or PTRS; the lower the priority of UCI, the farther away from DMRS and/or PTRS.
As shown in fig. 5, if UCI is to be placed in a DFT-s-OFDM symbol far away from DMRS and the symbol contains PTRS, fig. 5 shows 4 PTRS discharge patterns from top to bottom, respectively the start and end positions of one DFT-s-OFDM symbol; a DFT-s-OFDM symbol middle and end position; one DFT-s-OFDM symbol start and middle position; and dividing one DFT-s-OFDM symbol into X equal parts and then placing the PTRS at the middle of each equal part.
Also, the figure shows the UCI placement pattern in the PTRS discharge pattern in these 5.
In the figure, the time domain position is one time domain sample point in one DFT-s-OFDM symbol shown in the figure, and in addition, the figure is an example that several PTRSs are called a set of chunks (blocks) and then several sets of chunks are within one DFT-s-OFDM symbol length. Let the number of chunk groups be X and the number of consecutive PTRS in a group be K, then X is 2 and K is 2, but the arrangement of PTRS and UCI is not limited to this.
In the figure, when a plurality of UCIs are inserted, a UCI with a high priority is preferentially inserted at a position adjacent to the PTRS, and UCIs with a low priority are sequentially inserted to time domain positions in a direction away from the PTRS;
for example, in two consecutive UCIs, the UCI adjacent to the PTRS has a higher priority than the UCI farther from the PTRS.
The UCI herein may include: one or more of SR/beam management/recovery related information, HARQ ACK/NACK and CSI, wherein the HARQ ACK/NACK has the highest priority, and the SR is next to the beam management/recovery related information and the CSI is lower.
In the above fig. 4 and 5, when the time domain position where the UCI is inserted includes a plurality of time domain sampling points for transmitting the UCI, the plurality of time domain sampling points for transmitting the UCI are inserted in the vicinity of the time domain position of the phase tracking reference signal PTRS or the vicinity of the time domain positions of the demodulation reference signals DMRS and PTRS in a centralized or distributed mapping manner at time domain positions adjacent to the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS.
For example, two consecutive UCIs are inserted at time domain positions adjacent to the PTRS, which may be referred to as UCI centralized arrangement;
for another example, one of the two UCI is inserted into an adjacent time domain position before the PTRS, and the other UCI is inserted into an adjacent time domain position after the PTRS, which may be referred to as a distributed arrangement of UCI.
In the above embodiment of the present invention, in a symbol of the system frame for transmitting uplink control information UCI, if an original time domain position where the UCI is located is a fixed position, a time domain position shifted by an offset from the original time domain position of the UCI in a direction of a time domain position of a phase tracking reference signal PTRS or time domain positions of demodulation reference signals DMRS and PTRS is used as the time domain position of the UCI; and the offset is less than or equal to the original time domain position of the UCI and the time domain position of the PTRS or the time domain position number between the DMRS and the time domain position of the PTRS. The offset is indicated by an indication signaling sent by the network device, where the indication signaling includes: radio Resource Control (RRC) signaling, Medium Access Control (MAC) control unit (MAC CE) signaling and/or Downlink Control Information (DCI) signaling.
For the body, as shown in fig. 6, if the UCI is placed in a fixed manner, such as distributed and equally spaced, an offset is defined, which is used to move the UCI as close to the DMRS and/or PTRS as possible.
In addition, in the embodiment of the present invention, the UCI may also be placed at a position close to the DMRS according to the priority of the UCI, and the UCI is inserted into a symbol for transmitting the uplink control information UCI at a time domain position adjacent to a time domain position of the demodulation reference signal DMRS;
as shown in fig. 7 and 8, UCI is inserted into a schematic diagram, where the upper diagram in fig. 7 is the case where DMRS is front-loaded, and fig. 8 is the case of additional DMRS (X ═ 2, K ═ 2)
In the above embodiment of the present invention, if the UCI overlaps or collides with the time domain position of the PTRS at the time domain position of the symbol, the time domain position of the UCI is shifted and/or the time domain position of the PTRS is shifted, or the overlapping or colliding portion of the UCI and the PTRS is deleted and/or the overlapping or colliding portion of the PTRS and the UCI is deleted, so as to avoid collision between the UCI and the PTRS.
In the above embodiment of the present invention, the time domain position of the UCI may be determined by the terminal receiving an indication signaling sent by the network device, where the indication signaling is used to indicate the time domain position of the UCI in a symbol used for sending uplink control information UCI in the system frame; the indication signaling comprises: radio Resource Control (RRC) signaling, Medium Access Control (MAC) control unit (MAC CE) signaling and/or Downlink Control Information (DCI) signaling.
Or, a time domain position of the UCI in a symbol for transmitting uplink control information UCI in the system frame may be preset, so that signaling indication overhead may be saved.
The time domain position of the UCI herein is the time domain position of the UCI determined by the method described in each embodiment, that is, the uplink control information UCI is inserted into the time domain position adjacent to the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS.
The above embodiment of the present invention is directed to the transmission of UCI in the uplink DFT-s-OFDM system of 5G NR high frequency band communication, where the uplink control information UCI is inserted in a symbol for transmitting uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to time domain positions of a demodulation reference signal DMRS and a PTRS; transmitting the UCI at the time-domain location where the UCI is inserted; the demodulation accuracy of UCI can be effectively ensured, and the accuracy of DMRS channel estimation and the accuracy of PTRS phase noise estimation can be simultaneously utilized.
An embodiment of the present invention further provides a terminal, including:
a processor, configured to insert uplink control information UCI in a symbol used for transmitting uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to time domain positions of demodulation reference signals DMRS and PTRS;
a transceiver for transmitting the UCI at the time-domain location where the UCI is inserted.
The processor is further configured to insert uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to time domain positions of demodulation reference signals DMRS and PTRS according to the priority of the UCI.
Wherein the priority of the UCI comprises a plurality of different priorities; the processor is specifically configured to insert, in multiple UCIs of different priorities, a UCI of a first priority at a time domain position of the PTRS or at a time domain position adjacent to the time domain positions of the DMRS and the PTRS, and insert a UCI of a second priority at a time domain position adjacent to the time domain position where the UCI of the first priority is located; the first priority is greater than the second priority, and the first priority and the second priority are any one of a plurality of different priorities respectively.
The time domain position for inserting the UCI comprises a plurality of time domain sampling points for transmitting the UCI, and the plurality of time domain sampling points for transmitting the UCI are inserted near the time domain position of the phase tracking reference signal PTRS or near the time domain positions of the demodulation reference signals DMRS and PTRS in a centralized or distributed mapping mode on the time domain position adjacent to the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS.
In a symbol of the system frame, which is used for transmitting uplink control information UCI, if an original time domain position where the UCI is located is a fixed position, the processor is further configured to shift, from the original time domain position of the UCI, an offset time domain position in a direction of a time domain position of a phase tracking reference signal PTRS or time domain positions of demodulation reference signals DMRS and PTRS as the time domain position of the UCI; and the offset is less than or equal to the original time domain position of the UCI and the time domain position of the PTRS or the time domain position number between the DMRS and the time domain position of the PTRS.
The offset is indicated by an indication signaling sent by the network device, where the indication signaling includes: radio Resource Control (RRC) signaling, Medium Access Control (MAC) control unit (MAC CE) signaling and/or Downlink Control Information (DCI) signaling.
The processor is further configured to shift a time domain position of the UCI and/or shift a time domain position of the PTRS when the time domain position of the symbol overlaps or collides with the time domain position of the PTRS, or delete an overlapping or colliding portion of the UCI and the PTRS and/or delete an overlapping or colliding portion of the PTRS and the UCI.
The transceiver is further configured to receive an indication signaling sent by a network device, where the indication signaling is used to indicate a time domain position of UCI in a symbol used for sending uplink control information UCI in the system frame.
Wherein the indication signaling comprises: radio Resource Control (RRC) signaling, Medium Access Control (MAC) control element (MAC CE) and/or Downlink Control Information (DCI) signaling
It should be noted that the embodiment of the terminal is a terminal corresponding to the method, and all implementation manners in the embodiment of the method are applicable to the embodiment of the terminal, and the same technical effect can be achieved.
The embodiment of the invention also provides a method for receiving uplink control information, which comprises the following steps:
transmitting scheduling information of uplink control information UCI to a terminal; the scheduling information is used for enabling the terminal to insert uplink control information UCI into a symbol used for sending the uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position of a demodulation reference signal DMRS and the time domain position of the PTRS;
and receiving the UCI transmitted by the terminal at the time domain position inserted with the UCI.
In this embodiment, the network device sends scheduling information to the terminal, where the scheduling information is used to enable the terminal to insert uplink control information UCI in a symbol used for sending the uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to time domain positions of demodulation reference signals DMRS and PTRS; the demodulation accuracy of UCI can be ensured, and the accuracy of DMRS channel estimation and the accuracy of PTRS phase noise estimation can be simultaneously utilized.
An embodiment of the present invention further provides a network device, including:
a transmitter, configured to send scheduling information of uplink control information UCI to a terminal; the scheduling information is used for enabling the terminal to insert uplink control information UCI into a symbol used for sending the uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position of a demodulation reference signal DMRS and the time domain position of the PTRS;
and the receiver is used for receiving the UCI transmitted by the terminal at the time domain position inserted into the UCI.
It should be noted that the embodiment of the network device is a device corresponding to the method, and all implementation manners in the embodiment of the method are applicable to the embodiment of the network device, and the same technical effect can be achieved.
An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above. The processor and the memory are connected through a bus or an interface. The communication device may be a network device, such as a base station, or a terminal.
Embodiments of the present invention also provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (19)
1. A method for transmitting uplink control information, comprising:
inserting uplink control information UCI into a symbol for transmitting uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position of a demodulation reference signal DMRS and a time domain position of the PTRS, comprising: inserting uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to a time domain position of a demodulation reference signal DMRS and the PTRS according to the priority of the UCI;
transmitting the UCI at the time-domain location where the UCI is inserted.
2. The method of claim 1, wherein the priority of the UCI comprises a plurality of different priorities;
according to the priority of the UCI, the step of inserting the UCI into the time domain position adjacent to the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS comprises the following steps:
in the UCIs with different priorities, inserting the UCI with a first priority into the time domain position of the PTRS or the time domain position adjacent to the time domain positions of the DMRS and the PTRS, and inserting the UCI with a second priority into the time domain position adjacent to the time domain position where the UCI with the first priority is located; the first priority is greater than the second priority, and the first priority and the second priority are respectively any one of the plurality of different priorities.
3. The method according to claim 1, wherein the time domain position where the UCI is inserted includes a plurality of time domain sampling points for transmitting the UCI, and the plurality of time domain sampling points for transmitting the UCI are inserted in a centralized or distributed mapping manner near the time domain position of the phase tracking reference signal PTRS or near the time domain positions of the demodulation reference signals DMRS and PTRS at time domain positions adjacent to the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS.
4. The method as claimed in claim 1, wherein in a symbol of a system frame for transmitting UCI, if an original time domain position where UCI is located is a fixed position, the method further comprises:
shifting a time domain position with an offset in the direction of the time domain position of the phase tracking reference signal PTRS or the time domain positions of the demodulation reference signals DMRS and PTRS from the original time domain position of the UCI as the time domain position of the UCI; and the offset is less than or equal to the original time domain position of the UCI and the time domain position of the PTRS or the time domain position number between the DMRS and the time domain position of the PTRS.
5. The method according to claim 4, wherein the offset is indicated by an indication signaling sent by a network device, and the indication signaling includes: radio Resource Control (RRC) signaling, Medium Access Control (MAC) control unit (MAC CE) signaling and/or Downlink Control Information (DCI) signaling.
6. The method for transmitting uplink control information according to claim 1, further comprising: and if the UCI overlaps or collides with the time domain position of the PTRS at the time domain position of the symbol, shifting the time domain position of the UCI and/or shifting the time domain position of the PTRS, or deleting the overlapping or colliding part of the UCI and the PTRS and/or deleting the overlapping or colliding part of the PTRS and the UCI.
7. The method for transmitting uplink control information according to claim 1, further comprising: receiving an indication signaling sent by a network device, wherein the indication signaling is used for indicating a time domain position of UCI in a symbol used for sending uplink control information UCI; or
The time domain position of UCI in a symbol for transmitting uplink control information UCI is preset.
8. The method of claim 7, wherein the indication signaling comprises: radio Resource Control (RRC) signaling, Medium Access Control (MAC) control unit (MAC CE) signaling and/or Downlink Control Information (DCI) signaling.
9. A terminal, comprising:
a processor, configured to insert uplink control information UCI in a symbol used for transmitting uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to time domain positions of demodulation reference signals DMRS and PTRS;
a transceiver for transmitting the UCI at the time-domain location where the UCI is inserted;
the processor is further configured to insert uplink control information UCI at a time domain position adjacent to a time domain position of the phase tracking reference signal PTRS or a time domain position adjacent to a time domain position of the demodulation reference signal DMRS and the PTRS according to the priority of the UCI.
10. The terminal of claim 9, wherein the priority of the UCI comprises a plurality of different priorities; the processor is specifically configured to insert, in multiple UCIs of different priorities, a UCI of a first priority at a time domain position of the PTRS or at a time domain position adjacent to the time domain positions of the DMRS and the PTRS, and insert a UCI of a second priority at a time domain position adjacent to the time domain position where the UCI of the first priority is located; the first priority is greater than the second priority, and the first priority and the second priority are respectively any one of the plurality of different priorities.
11. The terminal of claim 9, wherein the time domain location where the UCI is inserted comprises a plurality of time domain sampling points for transmitting the UCI, the plurality of time domain sampling points for transmitting the UCI being inserted in a centralized or distributed mapping manner in a vicinity of the time domain location of the phase tracking reference signal PTRS or in a vicinity of the time domain location of the demodulation reference signals DMRS and PTRS at a time domain location adjacent to the time domain location of the phase tracking reference signal PTRS or the time domain location of the demodulation reference signals DMRS and PTRS.
12. The terminal of claim 9, wherein in a symbol of a system frame for transmitting uplink control information UCI, if an original time domain position where the UCI is located is a fixed position, the processor is further configured to shift, from the original time domain position of the UCI, an offset time domain position in a direction of a time domain position of a phase tracking reference signal PTRS or time domain positions of demodulation reference signals DMRS and PTRS as the time domain position of the UCI; and the offset is less than or equal to the original time domain position of the UCI and the time domain position of the PTRS or the time domain position number between the DMRS and the time domain position of the PTRS.
13. The terminal of claim 12, wherein the offset is indicated by indication signaling sent by a network device, and wherein the indication signaling comprises: radio Resource Control (RRC) signaling, Medium Access Control (MAC) control unit (MAC CE) signaling and/or Downlink Control Information (DCI) signaling.
14. The terminal according to claim 9, wherein the processor is further configured to shift a time domain position of the UCI and/or shift a time domain position of the PTRS, or delete an overlapping or colliding portion of the UCI and the PTRS and/or delete an overlapping or colliding portion of the PTRS and the UCI when the time domain position of the symbol overlaps or collides with the time domain position of the PTRS.
15. The terminal of claim 9, wherein the transceiver is further configured to receive indication signaling sent by a network device, and wherein the indication signaling is used to indicate a time domain position of UCI in a symbol used for sending uplink control information UCI.
16. A method for receiving uplink control information, comprising:
transmitting scheduling information of uplink control information UCI to a terminal; the scheduling information is used for enabling the terminal to insert uplink control information UCI into a symbol used for sending the uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position of a demodulation reference signal DMRS and the time domain position of the PTRS; inserting uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to a time domain position of a demodulation reference signal DMRS and the PTRS according to the priority of the UCI;
and receiving the UCI transmitted by the terminal at the time domain position inserted with the UCI.
17. A network device, comprising:
a transmitter, configured to send scheduling information of uplink control information UCI to a terminal; the scheduling information is used for enabling the terminal to insert uplink control information UCI into a symbol used for sending the uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position of a demodulation reference signal DMRS and the time domain position of the PTRS; inserting uplink control information UCI at a time domain position adjacent to a time domain position of a phase tracking reference signal PTRS or a time domain position adjacent to a time domain position of a demodulation reference signal DMRS and the PTRS according to the priority of the UCI;
and the receiver is used for receiving the UCI transmitted by the terminal at the time domain position inserted into the UCI.
18. A communication device, comprising: a processor, a memory storing a computer program which, when executed by the processor, performs the method of any one of claims 1-8, or the method of claim 16.
19. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1-8, or the method of claim 16.
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| WO2020261402A1 (en) * | 2019-06-25 | 2020-12-30 | 株式会社Ｎｔｔドコモ | Terminal and wireless communication method |
| CN114097290A (en) | 2019-06-26 | 2022-02-25 | 汉尼拔Ip有限责任公司 | User device and wireless communication method executed by user device |
| CN113259275B (en) * | 2020-02-11 | 2022-06-07 | 大唐移动通信设备有限公司 | Channel estimation method, device and receiver |
| CN114070525B (en) * | 2020-08-07 | 2023-06-06 | 维沃移动通信有限公司 | Transmission method and device |
| CN114337951B (en) * | 2020-09-29 | 2024-01-16 | 大唐移动通信设备有限公司 | Signal transmission method and device, terminal and network equipment |
| CN115550119A (en) * | 2021-06-30 | 2022-12-30 | 华为技术有限公司 | Method and communication device for signal transmission |
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