WO2020199063A1

WO2020199063A1 - Communication method and apparatus

Info

Publication number: WO2020199063A1
Application number: PCT/CN2019/080702
Authority: WO
Inventors: 李晓卡; 李军; 王俊伟
Original assignee: 华为技术有限公司
Priority date: 2019-03-30
Filing date: 2019-03-30
Publication date: 2020-10-08
Also published as: CN112020889A; CN112020889B

Abstract

A communication method and apparatus. The method comprises: receiving a first reference signal, and performing time-frequency offset compensation on the first reference signal. In the embodiments of the present application, on one hand, a time-frequency offset compensation value used for performing time-frequency offset compensation on a first reference signal is configured before the first reference signal is received, such that the first reference signal is compensated for based on the configured time-frequency offset compensation value, thereby avoiding the problem that a time-frequency offset estimation value calculated based on a compensated first reference signal is inaccurate due to an unreasonable moment for configuring a time-frequency offset compensation value; and on the other hand, the first reference signal is a reference signal that uses the time-frequency compensation value for the first time, and the time-frequency offset compensation value is configured before a second reference signal, using the time-frequency offset compensation value for the first time, is received, such that subsequent reference signals can all be compensated for based on the time-frequency offset compensation value, thereby effectively guaranteeing the accuracy of a time-frequency offset estimation value calculated based on the compensated subsequent reference signals.

Description

一种通信方法及装置Communication method and device

技术领域Technical field

本申请涉及无线通信技术领域，特别涉及一种通信方法及装置。This application relates to the field of wireless communication technology, and in particular to a communication method and device.

背景技术Background technique

第5代(the 5th generation，5G)通信***中将会采用更高的载波频率(一般地，大于6GHz以上)，比如28GHz、38GHz、或者72GHz频段等，来实现更大带宽、更高传输速率的无线通信。由于载波频率较高，使得其发射的无线信号在空间传播过程中经历更加严重的衰落，甚至在接收端难以检测出该无线信号。为此，5G***中将采用波束赋形(beamforming，BF)技术来获得具有良好方向性的增益，提高在发射方向上的功率，改善接收端的信干噪比(signal to interference plus noise ratio，SINR)。The 5th generation (5G) communication system will adopt a higher carrier frequency (generally, greater than 6GHz), such as 28GHz, 38GHz, or 72GHz frequency band, to achieve larger bandwidth and higher transmission rate Wireless communication. Due to the high carrier frequency, the wireless signal transmitted by it experiences more severe fading during the space propagation process, and it is even difficult to detect the wireless signal at the receiving end. For this reason, 5G systems will use beamforming (BF) technology to obtain gains with good directivity, increase power in the transmit direction, and improve the signal to interference plus noise ratio (SINR) at the receiving end. ).

通过采用波束赋形技术，发送端设备和接收端设备可以在不同的波束上进行通信。由于不同波束的覆盖方向和覆盖范围可能均不同，比如图1a所示意的波束1、波束2和波束3，波束1、波束2和波束3的覆盖方向和覆盖范围均不同，从而导致波束1、波束2和波束3上传输的信号的大尺度参数特征参数(比如平均时延、多普勒频移)可能会存在差异。其中，若波束1、波束2和波束3上传输的信号的平均时延存在差异，则可能会造成时间偏移；若波束1、波束2和波束3上传输的信号的多普勒频移存在差异，则可能会造成频率偏移。时间偏移和频率偏移(简称时频偏移)会导致接收端设备无法对接收到的信号进行正确解析，为解决这一问题，需要采用时频偏移补偿值对不同波束上传输的信号进行相应的时频偏移补偿。然而，由于时频偏移补偿值是动态变化的，因此，如何配置时频偏移补偿值，仍需进一步的研究。By adopting beamforming technology, the transmitting end device and the receiving end device can communicate on different beams. Since the coverage directions and coverage areas of different beams may be different, such as beam 1, beam 2, and beam 3 as shown in Figure 1a, the coverage directions and coverage areas of beam 1, beam 2 and beam 3 are all different, resulting in beam 1, The large-scale parameter characteristic parameters (such as average delay, Doppler shift) of the signals transmitted on beam 2 and beam 3 may be different. Among them, if the average delay of the signal transmitted on beam 1, beam 2 and beam 3 is different, it may cause time offset; if the Doppler frequency shift of the signal transmitted on beam 1, beam 2 and beam 3 exists Difference, it may cause frequency offset. Time offset and frequency offset (referred to as time-frequency offset) will cause the receiving end equipment to be unable to correctly analyze the received signal. To solve this problem, time-frequency offset compensation values need to be used for signals transmitted on different beams. Carry out the corresponding time-frequency offset compensation. However, since the time-frequency offset compensation value changes dynamically, further research is needed on how to configure the time-frequency offset compensation value.

发明内容Summary of the invention

本申请实施例的目的在于提供一种通信方法及装置，用于解决时频偏移补偿值的配置时刻不合理，而导致时频偏移估计结果不够准确的技术问题。The purpose of the embodiments of the present application is to provide a communication method and device to solve the technical problem that the time-frequency offset compensation value configuration time is unreasonable, which causes the time-frequency offset estimation result to be inaccurate.

第一方面，本申请实施例提供一种通信方法，该方法包括：In the first aspect, an embodiment of the present application provides a communication method, which includes:

接收第一参考信号；对所述第一参考信号进行时频偏移补偿；Receiving a first reference signal; performing time-frequency offset compensation on the first reference signal;

其中，对所述第一参考信号进行时频偏移补偿所使用的时频偏移补偿值是在接收所述第一参考信号之前配置的，所述第一参考信号为首次使用所述时频补偿值的参考信号。Wherein, the time-frequency offset compensation value used for time-frequency offset compensation of the first reference signal is configured before receiving the first reference signal, and the first reference signal is the first time the time-frequency offset is used. Reference signal for compensation value.

采用上述方法，一方面，由于对第一参考信号进行时频偏移补偿所使用的时频偏移补偿值是在接收第一参考信号之前配置的，从而使得第一参考信号是基于配置后的时频偏移补偿值进行补偿的，避免时频偏移补偿值的配置时刻不合理而导致基于补偿后的第一参考信号计算的时频偏移估计值不准确的问题，另一方面，第一参考信号为首次使用时频补偿值的参考信号，由于时频偏移补偿值是接收到首次使用该时频频移补偿值的第二参考信号之前配置的，从而使得后续参考信号均可以基于该时频偏移补偿值进行补偿，有效保证基于补偿后的后续参考信号计算的时频偏移估计值的准确性。Using the above method, on the one hand, since the time-frequency offset compensation value used for the time-frequency offset compensation of the first reference signal is configured before the first reference signal is received, the first reference signal is based on the configured The time-frequency offset compensation value is compensated to avoid the problem that the time-frequency offset compensation value configuration is unreasonable and the time-frequency offset estimation value calculated based on the compensated first reference signal is inaccurate. On the other hand, the first A reference signal is the reference signal that uses the time-frequency compensation value for the first time. Since the time-frequency offset compensation value is configured before receiving the second reference signal that uses the time-frequency shift compensation value for the first time, all subsequent reference signals can be based on this The time-frequency offset compensation value is compensated to effectively ensure the accuracy of the time-frequency offset estimation value calculated based on the subsequent reference signal after compensation.

在一种可能的设计中，所述时频偏移补偿值是在所述第一参考信号所在的首个时隙的开始时刻配置的。In a possible design, the time-frequency offset compensation value is configured at the beginning of the first time slot where the first reference signal is located.

在一种可能的设计中，所述时频偏移补偿值是在所述第一参考信号所在的首个时隙之前的第一时隙的开始时刻配置的。In a possible design, the time-frequency offset compensation value is configured at the beginning of the first time slot before the first time slot where the first reference signal is located.

在一种可能的设计中，第二参考信号所在的时隙包括所述第一时隙和第二时隙，所述第二时隙与所述第一时隙相邻且位于所述第一时隙之前；所述第二参考信号为用于时频偏移估计的参考信号；所述方法还包括：放弃使用所述时频偏移补偿值对所述第二参考信号进行时频偏移补偿。In a possible design, the time slot in which the second reference signal is located includes the first time slot and the second time slot, and the second time slot is adjacent to the first time slot and located in the first time slot. Before the time slot; the second reference signal is a reference signal used for time-frequency offset estimation; the method further includes: abandoning the time-frequency offset of the second reference signal using the time-frequency offset compensation value make up.

采用上述方法，由于时频偏移补偿值是在第二参考信号所在的两个时隙之间配置的，因此若接收第二参考信号，并对第二参考信号进行时频偏移补偿，则第二参考信号的部分信号(位于第二时隙)是使用配置前的时频偏移补偿值补偿的，而另一部分信号(位于第一时隙)是使用配置前的时频偏移补偿值补偿的，从而导致基于补偿后的第二参考信号计算的时频偏移估计值不准确。因此，本申请实施例提供的一种方法为放弃使用所述时频偏移补偿值对所述第二参考信号进行时频偏移补偿，或者也可以理解为，放弃在第二时隙和第一时隙上接收第二参考信号，从而避免其时频偏移估计值不准确而可能导致的问题。此种情形下，具体的处理方式可以参见具体实施方式中的描述。或者，在其它可能的情形中中，也可以对第二参考信号进行接收，但此时需要对位于第二时隙上的信号进行校正，具体可以参见具体实施方式中的描述。With the above method, since the time-frequency offset compensation value is configured between the two time slots where the second reference signal is located, if the second reference signal is received and the time-frequency offset compensation is performed on the second reference signal, then Part of the signal of the second reference signal (located in the second time slot) is compensated using the time-frequency offset compensation value before configuration, and another part of the signal (located in the first time slot) is compensated using the time-frequency offset compensation value before configuration Compensated, resulting in an inaccurate time-frequency offset estimation value calculated based on the compensated second reference signal. Therefore, a method provided by the embodiment of the present application is to abandon using the time-frequency offset compensation value to perform time-frequency offset compensation on the second reference signal, or it can also be understood as abandoning the second time slot and the first time slot. The second reference signal is received in a time slot, thereby avoiding possible problems caused by inaccurate time-frequency offset estimation values. In this case, the specific processing method can refer to the description in the specific implementation. Or, in other possible situations, the second reference signal may also be received, but at this time, the signal located in the second time slot needs to be corrected. For details, refer to the description in the specific implementation manner.

第二方面，本申请实施例提供一种通信方法，其特征在于，所述方法包括：In a second aspect, an embodiment of the present application provides a communication method, wherein the method includes:

接收用于时频偏移估计的N个参考信号的配置信息，所述N个参考信号的配置信息用于指示所述多个参考信号所在的时域资源；所述多个参考信号中包括第一参考信号；进而，根据所述多个参考信号所在的时域资源，在第一时刻配置用于对所述N个参考信号中的M个参考信号进行时频偏移补偿的时频偏移补偿值；M、N均为整数，且M小于或等于N；Receiving configuration information of N reference signals for time-frequency offset estimation, where the configuration information of the N reference signals is used to indicate the time domain resources where the multiple reference signals are located; the multiple reference signals include the first A reference signal; and further, according to the time domain resources in which the multiple reference signals are located, configure a time-frequency offset used for time-frequency offset compensation for M reference signals of the N reference signals at the first moment Compensation value; M and N are integers, and M is less than or equal to N;

其中，所述M个参考信号中不存在第一参考信号，所述第一时刻位于所述第一参考信号的时域资源的起始时刻和结束时刻之间。Wherein, there is no first reference signal in the M reference signals, and the first time is located between the start time and the end time of the time domain resource of the first reference signal.

在一种可能的设计中，所述N个参考信号中除所述M个参考信号以外的参考信号中存在所述第一参考信号；所述方法还包括：放弃对所述第一参考信号进行时频偏移估计。其中，放弃对所述第一参考信号进行时频偏移估计，也可以理解为放弃使用上述时频偏移补偿值对第一参考信号进行时频偏移补偿，或者放弃接收第一参考信号。In a possible design, the first reference signal exists in the reference signals other than the M reference signals among the N reference signals; the method further includes: abandoning the operation of the first reference signal Time-frequency offset estimation. Wherein, abandoning time-frequency offset estimation for the first reference signal can also be understood as giving up using the time-frequency offset compensation value to perform time-frequency offset compensation on the first reference signal, or giving up receiving the first reference signal.

第三方面，本申请实施例提供一种通信方法，该方法应用于接收端设备，该方法包括：In a third aspect, an embodiment of the present application provides a communication method, which is applied to a receiving end device, and the method includes:

接收发送端设备发送的第一参考信号；采用第i时频偏移补偿值对所述第一参考信号进行时频偏移补偿，根据时频偏移补偿后的第一参考信号，计算所述时频偏移补偿后的第一参考信号的第一时频偏移估计值，若所述第一时频偏移估计值大于预设阈值，则根据所述第一时频偏移估计值生成第i+1时频偏移补偿值；根据N个参考信号所在的时间单元，将所述第i时频偏移补偿值更新为所述第i+1时频偏移补偿值，i为正整数；所述N个参考信号为用于时频偏移估计的参考信号，所述N个参考信号包括所述第一参考信号，N为大于1的整数。Receiving the first reference signal sent by the transmitting end device; using the i-th time-frequency offset compensation value to perform time-frequency offset compensation on the first reference signal, and calculating the first reference signal based on the time-frequency offset compensation The first time-frequency offset estimation value of the first reference signal after the time-frequency offset compensation, if the first time-frequency offset estimation value is greater than the preset threshold, then generating according to the first time-frequency offset estimation value The i+1th time-frequency offset compensation value; according to the time unit where the N reference signals are located, the i-th time-frequency offset compensation value is updated to the i+1-th time-frequency offset compensation value, i is positive Integer; the N reference signals are reference signals used for time-frequency offset estimation, the N reference signals include the first reference signal, and N is an integer greater than 1.

本申请实施例中，由于在将第i时频偏移补偿值更新为第i+1时频偏移补偿值时，充分考虑了N个参考信号所在的时间单元，从而能够在合适的时刻将第i时频偏移补偿值更新为第i+1时频偏移补偿值。In the embodiment of the present application, when the i-th time-frequency offset compensation value is updated to the i+1-th time-frequency offset compensation value, the time unit where the N reference signals are located is fully considered, so that the The i-th time-frequency offset compensation value is updated to the i+1-th time-frequency offset compensation value.

在一种可能的设计中，根据与N个参考信号所在的时间单元，将所述第i时频偏移补偿值更新为所述第i+1时频偏移补偿值，包括：根据N个参考信号所在的时间单元，若确定在生成第i+1时频偏移补偿值的时刻之后的设定时间段内存在至少一个备选时刻，则在距离所述生成第i+1时频偏移补偿值的时刻最近的备选时刻将所述第i时频偏移补偿值更新为所述第i+1时频偏移补偿值；In a possible design, updating the i-th time-frequency offset compensation value to the i+1-th time-frequency offset compensation value according to the time unit where the N reference signals are located includes: In the time unit where the reference signal is located, if it is determined that there is at least one candidate time within the set time period after the time when the i+1th time-frequency offset compensation value is generated, then the distance from the i+1th time-frequency offset Update the i-th time-frequency offset compensation value to the (i+1)-th time-frequency offset compensation value at the closest candidate time at which the compensation value is shifted;

其中，所述至少一个备选时刻中的每个备选时刻符合如下条件：Wherein, each candidate moment in the at least one candidate moment meets the following conditions:

位于第一时间单元的结束位置或第二时间单元的起始位置；针对于所述N个参考信号中的每个参考信号，若所述参考信号所在的时间单元若包括所述第一时间单元，则不包括所述第二时间单元，或者，若包括所述第二时间单元，则不包括所述第一时间单元。Located at the end position of the first time unit or the start position of the second time unit; for each of the N reference signals, if the time unit in which the reference signal is located includes the first time unit , The second time unit is not included, or, if the second time unit is included, the first time unit is not included.

在一种可能的设计中，所述方法还包括：根据N个参考信号所在的时间单元，若确定在生成第i+1时频偏移补偿值的时刻之后的设定时间段内不存在符合所述条件的备选时刻，则在第一时刻将所述第i时频偏移补偿值更新为所述第i+1时频偏移补偿值；In a possible design, the method further includes: according to the time unit where the N reference signals are located, if it is determined that there is no coincidence within a set time period after the time when the i+1th time-frequency offset compensation value is generated. At the alternative moment of the condition, the i-th time-frequency offset compensation value is updated to the i+1-th time-frequency offset compensation value at the first moment;

其中，所述第一时刻为第三时间单元的结束位置或第四时间单元的起始位置；所述N个参考信号中包括第二参考信号，所述第二参考信号所在的时间单元包括所述第三时间单元和所述第四时间单元。Wherein, the first moment is the end position of the third time unit or the start position of the fourth time unit; the N reference signals include a second reference signal, and the time unit in which the second reference signal is located includes all The third time unit and the fourth time unit.

在一种可能的设计中，所述方法还包括：In a possible design, the method further includes:

放弃在所述第三时间单元和所述第四时间单元接收所述第二参考信号。Abandon receiving the second reference signal in the third time unit and the fourth time unit.

接收所述发送端设备发送的所述第二参考信号，所述第二参考信号包括位于所述第三时间单元的第一部分信号和位于所述第四时间单元的第二部分信号；Receiving the second reference signal sent by the transmitting end device, where the second reference signal includes a first partial signal located in the third time unit and a second partial signal located in the fourth time unit;

采用第i时频偏移补偿值对所述第一部分信号进行第一次时频偏移补偿，以及采用所述第i+1时频偏移补偿值和所述第i时频偏移补偿值的差值对第一次时频偏移补偿后的第一部分信号进行第二次时频偏移补偿，以及采用第i+1时频偏移补偿值对所述第二部分信号进行时频偏移补偿；Use the i-th time-frequency offset compensation value to perform the first time-frequency offset compensation on the first partial signal, and use the i+1-th time-frequency offset compensation value and the i-th time-frequency offset compensation value Perform the second time-frequency offset compensation on the first part of the signal after the first time-frequency offset compensation, and use the i+1th time-frequency offset compensation value to perform the time-frequency offset on the second part of the signal Shift compensation

根据第二次时频偏移补偿后的第一部分信号和时频偏移补偿后的第二部分信号，计算得到第二时频偏移估计值。According to the first partial signal after the second time-frequency offset compensation and the second partial signal after the time-frequency offset compensation, the second time-frequency offset estimation value is calculated.

在一种可能的设计中，所述计算得到第二时频偏移估计值之后，所述方法还包括：In a possible design, after the second time-frequency offset estimation value is obtained through the calculation, the method further includes:

接收所述发送端设备发送的与所述第二参考信号具有QCL关系的第二目标信号；Receiving a second target signal that has a QCL relationship with the second reference signal sent by the sending end device;

采用所述第i+1时频偏移补偿值对所述第二目标信号进行第一次时频偏移补偿，以及采用所述第二时频偏移估计值对第一次时频偏移补偿后的第二目标信号进行第二次时频偏移补偿，进而解析第二次时频偏移补偿后的第二目标信号。Use the i+1th time-frequency offset compensation value to perform the first time-frequency offset compensation on the second target signal, and use the second time-frequency offset estimation value to perform the first time-frequency offset The compensated second target signal is subjected to a second time-frequency offset compensation, and then the second target signal after the second time-frequency offset compensation is analyzed.

在一种可能的设计中，所述将所述第i时频偏移补偿值更新为所述第i+1时频偏移补偿值之后，还包括：In a possible design, after the updating the i-th time-frequency offset compensation value to the i+1-th time-frequency offset compensation value, the method further includes:

接收所述发送端设备发送的与所述第一参考信号具有QCL关系的第一目标信号；采用所述第i+1时频偏移补偿值对所述第一目标信号进行时频偏移补偿，并解析时频偏移补偿后的第一目标信号。Receiving the first target signal that has a QCL relationship with the first reference signal sent by the transmitting end device; and using the i+1th time-frequency offset compensation value to perform time-frequency offset compensation on the first target signal , And analyze the first target signal after time-frequency offset compensation.

在一种可能的设计中，所述N个参考信号中还包括第三参考信号；In a possible design, the N reference signals further include a third reference signal;

所述将所述第i时频偏移补偿值更新为所述第i+1时频偏移补偿值之后，还包括：After the updating the i-th time-frequency offset compensation value to the i+1-th time-frequency offset compensation value, the method further includes:

接收所述发送端设备发送的第三参考信号；采用第i+1时频偏移补偿值对所述第三参考信号进行时频偏移补偿，并计算时频偏移补偿后的第三参考信号的第三时频偏移估计值。Receive the third reference signal sent by the transmitting end device; use the i+1th time-frequency offset compensation value to perform time-frequency offset compensation on the third reference signal, and calculate the third reference after the time-frequency offset compensation The third time-frequency offset estimate of the signal.

在一种可能的设计中，所述计算时频偏移补偿后的第三参考信号的第三时频偏移估计值之后，所述方法还包括：In a possible design, after the calculation of the third time-frequency offset estimation value of the third reference signal after the time-frequency offset compensation, the method further includes:

接收所述发送端设备发送的与所述第三参考信号具有QCL关系的第三目标信号；Receiving a third target signal that has a QCL relationship with the third reference signal sent by the sending end device;

采用所述第i+1时频偏移补偿值对所述第三目标信号进行第一次时频偏移补偿，以及采用所述第三时频偏移估计值对第一次时频偏移补偿后的第三目标信号进行第二次时频偏移补偿，进而解析第二次时频偏移补偿后的第三目标信号。Use the i+1th time-frequency offset compensation value to perform the first time-frequency offset compensation on the third target signal, and use the third time-frequency offset estimation value to perform the first time-frequency offset compensation The compensated third target signal is subjected to the second time-frequency offset compensation, and then the third target signal after the second time-frequency offset compensation is analyzed.

第四方面，本申请实施例提供一种装置，该装置可以是终端设备，或者也可以是设置在终端设备中的半导体芯片。该装置具有实现上述第一方面至第三方面的各种可能的设计的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的单元或模块。In a fourth aspect, an embodiment of the present application provides a device. The device may be a terminal device or a semiconductor chip provided in the terminal device. The device has the function of realizing various possible designs of the first aspect to the third aspect. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions.

第五方面，本申请实施例一种装置，包括：处理器和存储器；处理器用于执行存储在存储器上的指令，当指令被执行时，使得该装置执行如上述第一方面至第三方面的任一种可能的设计中的方法。In a fifth aspect, a device of an embodiment of the present application includes: a processor and a memory; the processor is used to execute instructions stored on the memory, and when the instructions are executed, the device executes the above-mentioned first to third aspects. Any possible design method.

第六方面，本申请实施例还提供一种计算机可读存储介质，包括指令，当指令被执行时，实现上述各方面或各方面的任一种可能的设计中的方法。In a sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, including instructions, which when executed, implement the above-mentioned aspects or any of the possible design methods of the aspects.

第七方面，本申请实施例还提供一种计算机程序产品，包括计算机程序或指令，当计算机程序或指令被执行时，实现上述各方面或各方面的任一种可能的设计中的方法。In a seventh aspect, the embodiments of the present application also provide a computer program product, including a computer program or instruction, which when executed, implements the foregoing aspects or any of the possible design methods in each aspect.

附图说明Description of the drawings

图1a为不同波束的覆盖方向和覆盖范围示意图；Figure 1a is a schematic diagram of the coverage direction and coverage of different beams;

图1b为本申请实施例适用的一种***架构示意图；Figure 1b is a schematic diagram of a system architecture to which an embodiment of this application is applicable;

图1c为本申请实施例适用的又一种***架构示意图；FIG. 1c is a schematic diagram of another system architecture to which the embodiments of this application are applicable;

图2a为本申请实施例提供的一种TRS所占用的资源示意图；Figure 2a is a schematic diagram of resources occupied by a TRS provided by an embodiment of this application;

图2b为本申请实施例中实现方式1的实现过程示意图；Figure 2b is a schematic diagram of the implementation process of implementation manner 1 in an embodiment of the application;

图2c为本申请实施例中实现方式2的实现过程示意图；Figure 2c is a schematic diagram of the implementation process of implementation manner 2 in an embodiment of the application;

图2d为本申请实施例参考信号所占用的时间单元的一种示例图；2d is an example diagram of time units occupied by reference signals in an embodiment of the application;

图3为本申请实施例提供的一种时频偏移补偿值的更新方法所对应的流程示意图；FIG. 3 is a schematic flowchart corresponding to a method for updating a time-frequency offset compensation value provided by an embodiment of the application;

图4a为本申请实施例参考信号所占用的时间单元的又一种示例图；4a is another example diagram of time units occupied by reference signals in an embodiment of this application;

图4b为本申请实施例参考信号所占用的时间单元的又一种示例图；FIG. 4b is another example diagram of time units occupied by reference signals in an embodiment of this application;

图4c为本申请实施例参考信号所占用的时间单元的又一种示例图；FIG. 4c is another example diagram of time units occupied by reference signals in an embodiment of this application;

图5为本申请实施例中所涉及的装置的可能的示例性框图；Fig. 5 is a possible exemplary block diagram of a device involved in an embodiment of the application;

图6为本申请实施例提供的一种装置的结构示意图；FIG. 6 is a schematic structural diagram of a device provided by an embodiment of this application;

图7为本申请实施例提供的一种终端设备的结构示意图。FIG. 7 is a schematic structural diagram of a terminal device provided by an embodiment of the application.

具体实施方式detailed description

为了使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施例作进一步地详细描述。In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

首先，对本申请实施例中的部分用语进行解释说明，以便于本领域技术人员理解。First, some terms in the embodiments of the present application are explained to facilitate the understanding of those skilled in the art.

(1)终端设备：是一种具有无线收发功能的设备，可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对应用场景不做限定。终端设备有时也可以称为用户设备(user equipment，UE)、接入终端设备、UE单元、UE站、移动站、移动台、远方站、远程终端设备、移动设备、UE终端设备、终端设备、无线通信设备、UE代理或UE装置等。(1) Terminal equipment: It is a device with wireless transceiver function that can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (For example, airplanes, balloons, satellites, etc.). The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an industrial control ( Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grids, and transportation safety Wireless terminal, wireless terminal in smart city, wireless terminal in smart home, etc. The embodiment of this application does not limit the application scenario. Terminal equipment can sometimes be called user equipment (UE), access terminal equipment, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, terminal equipment, Wireless communication equipment, UE agent or UE device, etc.

(2)网络设备：可以是与终端设备通信的设备，如基站或基站控制器等。网络设备可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域(小区)内的终端设备进行通信。网络设备可以是全球移动通信(global system for mobile communications，GSM)***或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)***中的基站(NodeB，NB)，还可以是LTE***中的演进型基站(evolved NodeB，eNB或eNodeB)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备，例如，新无线(new radio，NR)中的基站(gNodeB或gNB)或收发点(transmission receiving point/transmission reception point，TRP)，或者网络设备还可以是未来演进的公共陆地移动网络(public land mobile network，PLMN)网络中的网络设备等，本申请实施例并不限定。(2) Network equipment: It can be equipment that communicates with terminal equipment, such as base stations or base station controllers. The network device can provide communication coverage for a specific geographic area, and can communicate with terminal devices located in the coverage area (cell). The network equipment can be the global system for mobile communications (GSM) system or the base transceiver station (BTS) in code division multiple access (CDMA), or it can be broadband code division multiple access (BTS). The base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system can also be the evolved NodeB (eNB or eNodeB) in the LTE system, or it can be the cloud radio access network (cloud radio access network). , CRAN) scenarios, wireless controllers, or network devices can be relay stations, access points, in-vehicle devices, wearable devices, and network devices in the future 5G network, for example, the base station in the new radio (NR) gNodeB or gNB) or the transmission receiving point/transmission reception point (TRP), or the network equipment can also be the network equipment in the future evolution of the public land mobile network (public land mobile network, PLMN) network, etc., this application is implemented The examples are not limited.

(3)波束(beam)：高频通信的一个主要问题是信号能量随传输距离急剧下降，导致信号传输距离短。为了克服这个问题，高频通信采用模拟波束技术，通过大规模天线阵列进行加权处理，将信号能量集中在一个较小的范围内，形成一个类似于光束一样的信号(称为模拟波束，简称波束)，从而提高传输距离。(3) Beam: One of the main problems of high-frequency communication is that the signal energy drops sharply with the transmission distance, resulting in a short signal transmission distance. In order to overcome this problem, high-frequency communication adopts analog beam technology, and performs weighting processing through a large-scale antenna array to concentrate the signal energy in a small range to form a beam-like signal (called analog beam, or beam for short). ) To increase the transmission distance.

波束是一种通信资源，波束可以是宽波束，也可为窄波束，或其它类型的波束。形成波束的技术可以是波束成形技术或其它技术手段。波束成形技术可具体为数字波束成形技术、模拟波束成形技术、混合数字/模拟波束成形技术等。不同的波束可认为是不同的通信资源，通过不同的波束可发送相同的信息或不同的信息。可选的，可以将具有相同或者类似通信特征的多个波束视为一个波束，一个波束可包括一个或多个天线端口，用于传输数据信道、控制信道等。可以理解的是，形成一个波束的一个或多个天线端口也可以看作是一个天线端口集(或天线端口组)，波束还可以称为空域滤波器(spatial filer)。A beam is a communication resource. The beam can be a wide beam, a narrow beam, or other types of beams. The beam forming technology may be beamforming technology or other technical means. The beamforming technology may specifically be digital beamforming technology, analog beamforming technology, hybrid digital/analog beamforming technology, etc. Different beams can be considered as different communication resources, and the same information or different information can be sent through different beams. Optionally, multiple beams with the same or similar communication characteristics may be regarded as one beam, and one beam may include one or more antenna ports for transmitting data channels, control channels, and the like. It is understandable that one or more antenna ports forming a beam may also be regarded as an antenna port set (or antenna port group), and the beam may also be called a spatial filer.

(4)本申请实施例中涉及的第一、第二等各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围，也不表示先后顺序。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。“至少一个”是指一个或者多个。至少两个是指两个或者多个。“至少一个”、“任意一个”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个、种)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。(4) The various numerical numbers such as first and second involved in the embodiments of the present application are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application, and do not indicate a sequence. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. "At least one" means one or more. At least two means two or more. "At least one", "any one" or similar expressions refer to any combination of these items, including any combination of single item (a) or plural items (a). For example, at least one (piece, species) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or Multiple.

图1b为本申请实施例适用的一种***架构示意图。如图1b所示，该架构中包括一个或多个网络设备(比如网络设备101)以及位于网络设备101覆盖范围内的一个或多个终端设备(比如终端设备102)。图1b所示的***架构中，网络设备101可以通过无线空口与终端设备102进行通信。Figure 1b is a schematic diagram of a system architecture to which an embodiment of this application is applicable. As shown in Figure 1b, the architecture includes one or more network devices (such as network device 101) and one or more terminal devices (such as terminal device 102) located within the coverage area of network device 101. In the system architecture shown in FIG. 1b, the network device 101 can communicate with the terminal device 102 through a wireless air interface.

图1c为本申请实施例适用的又一种***架构示意图。如图1c所述，该架构中包括多个网络设备(比如第一网络设备1031、第二网络设备1032)以及一个或多个终端设备(比如终端设备104)。第一网络设备1031、第二网络设备1032可以为特定的地理区域提供通信覆盖，终端设备104位于该特定的地理区域内。图1c所示的***架构中，第一网络设备1031、第二网络设备1032均可以通过无线空口与终端设备102进行通信。进一步地，图1c所示意的***架构可以支持协作多点(coordinated multi-point，COMP)传输，即第一网络设备1031、第二网络设备1032可以采用协作多点传输方式向终端设备104传输下行数据。FIG. 1c is a schematic diagram of another system architecture to which an embodiment of this application is applicable. As shown in Figure 1c, the architecture includes multiple network devices (such as a first network device 1031, a second network device 1032) and one or more terminal devices (such as a terminal device 104). The first network device 1031 and the second network device 1032 can provide communication coverage for a specific geographic area, and the terminal device 104 is located in the specific geographic area. In the system architecture shown in FIG. 1c, both the first network device 1031 and the second network device 1032 can communicate with the terminal device 102 through a wireless air interface. Further, the system architecture shown in FIG. 1c can support coordinated multi-point (COMP) transmission, that is, the first network device 1031 and the second network device 1032 can use coordinated multi-point transmission to transmit downlink to the terminal device 104 data.

应理解，图1b和图1c所示意的***架构可以适用于各种无线接入技术的通信***中，例如，长期演进(long term evolution，LTE)通信***、5G通信***以及其它可能的通信***中。It should be understood that the system architecture shown in Figures 1b and 1c can be applied to communication systems of various wireless access technologies, for example, long term evolution (LTE) communication systems, 5G communication systems, and other possible communication systems. in.

图1b和图1c仅为通信***的一个架构示意图，本申请实施例中对通信***中网络设备的数量、终端设备的数量不作限定，而且本申请实施例所适用的通信***中除了包括网络设备和终端设备以外，还可以包括其它设备，如核心网设备、无线中继设备和无线回传设备等，对此本申请实施例也不作限定。以及，本申请实施例中的网络设备可以将所有的功能集成在一个独立的物理设备，也可以将功能分布在多个独立的物理设备上，对此本申请实施例也不作限定。此外，本申请实施例中的终端设备可以通过无线方式与网络设备连接。Figures 1b and 1c are only a schematic diagram of the architecture of the communication system. In the embodiment of the present application, the number of network devices and the number of terminal devices in the communication system are not limited, and the communication system to which the embodiment of this application applies except includes network equipment In addition to terminal devices, other devices may also be included, such as core network devices, wireless relay devices, and wireless backhaul devices, which are not limited in the embodiment of the present application. And, the network device in the embodiment of the present application may integrate all functions in one independent physical device, or may distribute the functions on multiple independent physical devices, which is not limited in the embodiment of the present application. In addition, the terminal device in the embodiment of the present application may be connected to the network device in a wireless manner.

本申请实施例描述的***架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着通信***架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。The system architecture and business scenarios described in the embodiments of this application are intended to illustrate the technical solutions of the embodiments of this application more clearly, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with communication With the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

以图1c所示意的***架构为例，在协作多点传输的场景中，第一网络设备可以作为服务网络设备，第二网络设备可以为协作网络设备；或者，第一网络设备可以为协作网络设备，第二网络设备为服务网络设备。需要说明的是，在协作多点传输的场景中，可以有多个协作网络设备，图1c中仅示意出一个协作网络设备。Taking the system architecture shown in Figure 1c as an example, in the scenario of coordinated multipoint transmission, the first network device can be used as a serving network device, and the second network device can be a collaborative network device; or, the first network device can be a collaborative network The second network device is a service network device. It should be noted that in the scenario of coordinated multipoint transmission, there may be multiple coordinated network devices, and only one coordinated network device is shown in FIG. 1c.

协作多点传输场景可以支持多种调度方式，比如服务网络设备可以向终端设备发送控制信令，协作网络设备可以向终端设备发送数据；或者，服务网络设备可以向终端设备发送控制信令，服务网络设备和协作网络设备可以同时向该终端设备发送数据，或者，服务网络设备和协作网络设备可以同时向终端设备发送控制信令，并且服务网络设备和协作网络设备可以同时向终端设备发送数据。本申请实施例对此并未特别限定。进一步地，服务网络设备和协作网络设备之间以及多个协作网络设备之间可以进行通信，例如通过X2接口进行控制消息的传递。由此可以看出，协作多点传输场景可以支持网络设备联合调度，也可以支持网络设备的单独调度。在网络设备的单独调度中，两个网络设备分别单独发送控制信令，两个网络设备联合发送数据。在网络设备的联合调度中，可以通过其中一个网络设备发送控制信令，两个网络设备联合发送数据。The coordinated multi-point transmission scenario can support multiple scheduling methods. For example, the serving network device can send control signaling to the terminal device, and the cooperative network device can send data to the terminal device; or the serving network device can send control signaling to the terminal device. The network device and the cooperative network device can simultaneously send data to the terminal device, or the serving network device and the cooperative network device can simultaneously send control signaling to the terminal device, and the serving network device and the cooperative network device can simultaneously send data to the terminal device. The embodiment of the present application does not specifically limit this. Further, communication can be carried out between the serving network device and the cooperative network device and between multiple cooperative network devices, for example, the transmission of control messages is performed through the X2 interface. It can be seen that the coordinated multipoint transmission scenario can support the joint scheduling of network devices, and can also support the individual scheduling of network devices. In the separate scheduling of network devices, two network devices send control signaling separately, and two network devices send data jointly. In the joint scheduling of network devices, one of the network devices may send control signaling, and the two network devices may jointly send data.

以网络设备的联合调度为例，在一种可能的情形中，第一网络设备可以通过物理下行控制信道(physical downlink control channel，PDCCH)向终端设备发送目标信号1，目标信号1可以包括控制信号，比如下行控制信息(downlink control information，DCI)，其中，PDCCH可以位于第一网络设备预先为终端设备配置的控制资源集合(control-resource set，CORESET)(比如CORESET-1)所指示的资源上；以及，第一网络设备可以通过物理下行共享信道(physical downlink shared channel，PDSCH)向终端设备发送目标信号2，目标信号2可以包括比如数据信号和解调参考信号(demodulation reference signal，DMRS)(比如DMRS-1)，第二网络设备可以通过PDSCH向终端设备发送目标信号3，目标信号3可以包括比如数据信号和DMRS(比如DMRS-2)。Taking the joint scheduling of network devices as an example, in a possible situation, the first network device may send target signal 1 to the terminal device through a physical downlink control channel (PDCCH), and target signal 1 may include control signals For example, downlink control information (DCI), where the PDCCH may be located on a resource indicated by a control resource set (control-resource set, CORESET) (such as CORESET-1) pre-configured by the first network device for the terminal device ; And, the first network device may send the target signal 2 to the terminal device through a physical downlink shared channel (PDSCH), and the target signal 2 may include, for example, a data signal and a demodulation reference signal (DMRS) ( For example, DMRS-1), the second network device may send the target signal 3 to the terminal device through the PDSCH, and the target signal 3 may include, for example, a data signal and a DMRS (such as DMRS-2).

进一步地，在5G通信***中，DMRS可以通过DMRS天线端口组(DMRS group)形成的波束来发送，其中DMRS group可以通过高层信令配置，例如，高层信令配置将12个天线端口(例如，DMRS天线端口1000-1011)分成两组：天线端口{1000 1002 1004 1006 1008 1010}为一组，天线端口{1001 1003 1005 1007 1009 1011}为另一组；或者，天线端口{1000-1005}为一组，天线端口{1006-1011}为另一组。如此，在一个示例中，上述DMRS-1可以通过DMRS group1(比如天线端口{1000 1002 1004 1006 1008 1010})形成的波束(比如图1a所示意的波束2)来发送，DMRS-2可以通过DMRS group2(比如天线端口{1001 1003 1005 1007 1009 1011})形成的波束(比如图1a中所示意的波束3)来发送。Further, in a 5G communication system, DMRS can be transmitted through a beam formed by a DMRS antenna port group (DMRS group), where the DMRS group can be configured through high-level signaling. For example, the high-level signaling configures 12 antenna ports (for example, DMRS antenna ports 1000-1011) are divided into two groups: antenna ports {1000 1002 1004 1006 1008 1010} as one group, antenna ports {1001 1003 1005 1007 1009 1011} as another group; or antenna ports {1000-1005} One group, the antenna port {1006-1011} is another group. In this way, in an example, the above-mentioned DMRS-1 can be transmitted through a beam formed by DMRS group1 (such as antenna ports {1000 1002 1004 1006 1008 1010}), such as beam 2 shown in Figure 1a, and DMRS-2 can be transmitted through DMRS Group2 (for example, antenna port {1001 1003 1005 1007 1009 1011}) forms a beam (for example, beam 3 shown in Figure 1a) to send.

在一个示例中，若第一网络设备通过图1a中所示意的波束1发送PDCCH(CORESET-1)，以及通过图1a中所示意的波束2发送PDSCH(DMRS-1)，第二网络设备通过1a中所示意的波束3发送PDSCH(DMRS-1)，则在此种情形中，为保证通过这些信道传输的目标信号能够被终端设备正确接收，第一网络设备可以为终端设备配置相应的参考信号进行时频偏移跟踪。其中，参考信号可以用于时频偏移估计，在一个示例中，参考信号可以为跟踪参考信号(tracking reference signal，TRS)、同步信号块(synchronization signal block，SSB)或者也可以为其它可以用于时频偏移估计的信号，具体不做限定。In one example, if the first network device transmits PDCCH (CORESET-1) through beam 1 shown in Figure 1a and transmits PDSCH (DMRS-1) through beam 2 shown in Figure 1a, the second network device transmits The beam 3 shown in 1a transmits PDSCH (DMRS-1). In this case, in order to ensure that the target signal transmitted through these channels can be correctly received by the terminal device, the first network device can configure the corresponding reference for the terminal device The signal is time-frequency offset tracking. Among them, the reference signal can be used for time-frequency offset estimation. In one example, the reference signal can be a tracking reference signal (TRS), a synchronization signal block (synchronization signal block, SSB), or other available The signal estimated from the time-frequency offset is not specifically limited.

进一步地，以参考信号为TRS为例，第一网络设备可以向终端设备发送TRS的配置信息，其中，TRS的配置信息可以包括TRS周期、TRS长度、TRS符号数，进一步地，还可以包括TRS带宽、TRS频域间隔、TRS时域间隔，具体不做限定。其中，TRS周期表示TRS的周期，比如可以设置为Y，单位为ms；TRS长度表示每个TRS周期内TRS的长度，比如可以设置为X，单位为时隙(slot)，示例性地，每个时隙可以包含14个正交频分复用(orthogonal frequency division multiplexing，OFDM)符号；TRS符号数表示在每个时隙内TRS包含的OFDM符号个数；TRS带宽表示TRS频带的带宽，比如单位可以为资源块(resource block，RB)个数；TRS频域间隔表示在每个RB内，TRS在频域的子载波间隔；TRS时域间隔表示在每个RB内，TRS在时域的间隔。Further, taking the reference signal as TRS as an example, the first network device may send TRS configuration information to the terminal device, where the TRS configuration information may include TRS period, TRS length, and the number of TRS symbols, and further, may also include TRS The bandwidth, TRS frequency domain interval, and TRS time domain interval are not specifically limited. Among them, the TRS period represents the period of TRS, for example, it can be set to Y, and the unit is ms; the length of TRS represents the length of TRS in each TRS period, for example, it can be set to X, and the unit is time slot (slot). A time slot can contain 14 orthogonal frequency division multiplexing (OFDM) symbols; the number of TRS symbols represents the number of OFDM symbols contained in the TRS in each time slot; the TRS bandwidth represents the bandwidth of the TRS frequency band, such as The unit can be the number of resource blocks (resource block, RB); TRS frequency domain interval represents the subcarrier interval within each RB and TRS in the frequency domain; TRS time domain interval represents the number of subcarriers within each RB and TRS in the time domain. interval.

参见图2a所示，为TRS的一种示例。在图2a中，每个小方格可以理解为一个资源元素(resource element，RE)，TRS长度为2个时隙，在每个时隙内TRS包含2个符号(分别为第6个符号和第11个符号)。若TRS周期为3ms，当每个时隙的时长为0.5ms时，下一周期的TRS可位于时隙n+6和时隙n+7。See Figure 2a, which is an example of TRS. In Figure 2a, each small square can be understood as a resource element (resource element, RE), TRS length is 2 time slots, in each time slot TRS contains 2 symbols (respectively the sixth symbol and 11th symbol). If the TRS cycle is 3ms, when the duration of each time slot is 0.5ms, the TRS of the next cycle can be located in time slot n+6 and time slot n+7.

本申请实施例中，第一网络设备可以为终端设备配置多个参考信号进行时频偏移跟踪，参见表1所示，为第一网络设备配置的参考信号与目标信号的关系示例。In the embodiment of the present application, the first network device may configure multiple reference signals for the terminal device to perform time-frequency offset tracking. Refer to Table 1 for an example of the relationship between the reference signal configured for the first network device and the target signal.

表1：参考信号与目标信号的关系示例Table 1: Example of the relationship between reference signal and target signal

目标信道(目标信号)Target channel (target signal)

参考信号Reference signal

PDSCH(DMRS-1)PDSCH(DMRS-1)	TRS1TRS1
PDSCH(DMRS-2)PDSCH(DMRS-2)	TRS2TRS2
PDCCH(控制信号)PDCCH (control signal)	SSB5SSB5

表1中，TRS1的天线端口与PDSCH的DMRS Goup1存在准共址(quasi-co-location，QCL)关系，即传输TRS1的波束方向与传输PDSCH的DMRS-1的波束方向一致。TRS2的天线端口与PDSCH的DMRS Goup2存在QCL关系，即传输TRS2的波束方向与传输PDSCH的DMRS-2的波束方向一致。SSB5的天线端口与PDCCH的控制信号的天线端口之间存在QCL关系，即传输SSB5的波束方向与传输PDCCH的控制信号的波束方向一致。In Table 1, the antenna port of TRS1 and the DMRS Goup1 of PDSCH have a quasi-co-location (QCL) relationship, that is, the beam direction of TRS1 is the same as the beam direction of DMRS-1 of PDSCH. The antenna port of TRS2 has a QCL relationship with DMRS Goup2 of PDSCH, that is, the beam direction of TRS2 is the same as the beam direction of DMRS-2 of PDSCH. There is a QCL relationship between the antenna port of the SSB5 and the antenna port of the PDCCH control signal, that is, the beam direction for transmitting the SSB5 is consistent with the beam direction for transmitting the PDCCH control signal.

其中，具有QCL关系的天线端口发送出的信号会经过相同的大尺度衰落，具有相同的大尺度特征参数，例如，当称天线端口A和天线端口B具有QCL关系时，是指在天线端口A上的信号1估计得到的信道大尺度特征参数同样适合于天线端口B上的信号2。本申请实施例中，天线端口A和天线端口B具有QCL关系也可以描述为信号1和信号2具有QCL关系。其中，大尺度特征参数包括以下一项或多项：时延扩展、多普勒扩展、多普勒频移、平均信道增益和平均时延等。在5G通信***中，大尺度特征参数还可以包括空域信息，比如接收到达角(angle of arival，AOA)、到达角扩展(angle of arival spread，AAS)、发射离开角(angle of departure，AOD)、离开角扩展(angle of departure spread，ADS)和空间相关性(spatial correlation)等中的一项或多项。Among them, the signal sent by the antenna port with the QCL relationship will undergo the same large-scale fading and have the same large-scale characteristic parameters. For example, when the antenna port A and the antenna port B have a QCL relationship, it means that the antenna port A has a QCL relationship. The large-scale characteristic parameters of the channel estimated from signal 1 above are also suitable for signal 2 on antenna port B. In the embodiment of the present application, the antenna port A and the antenna port B have a QCL relationship, which can also be described as a signal 1 and a signal 2 having a QCL relationship. Among them, the large-scale characteristic parameters include one or more of the following: delay spread, Doppler spread, Doppler shift, average channel gain, and average delay. In 5G communication systems, large-scale characteristic parameters can also include airspace information, such as receiving angle of arrival (angle of arival, AOA), angle of arrival spread (AAS), and launching departure angle (angle of departure, AOD) One or more of angle of departure (angle of departure, ADS) and spatial correlation (spatial correlation), etc.

需要说明的是，以PDSCH(DMRS-1)为例，第一网络设备可以为终端设备配置一个或多个与PDSCH(DMRS-1)具有QCL关系的参考信号，当配置多个参考信号时，多个参考信号的配置信息可以不同，多个参考信号可以用于对PDSCH进行不同维度的时频偏移估计。本申请实施例中仅示例性地以配置TRS1的情形为例进行描述。It should be noted that, taking PDSCH (DMRS-1) as an example, the first network device can configure one or more reference signals that have a QCL relationship with PDSCH (DMRS-1) for the terminal device. When multiple reference signals are configured, The configuration information of the multiple reference signals may be different, and the multiple reference signals may be used to estimate the time-frequency offset of different dimensions for the PDSCH. In the embodiments of the present application, only the configuration of TRS1 is used as an example for description.

在一种可能的实现方式(简称为实现方式1)中，可以基于各个参考信号对各个目标信号进行时频偏移补偿，比如，参见图2b所示，TRS1的时频偏移估计结果可以用于PDSCH的DMRS-1的时频偏移补偿，TRS2的时频偏移估计结果可以用于PDSCH的DMRS-2的时频偏移补偿，SSB5的时频偏移估计结果可以用于PDCCH的控制信号的时频偏移补偿。也就是说，终端设备接收到PDSCH的DMRS-1后，可以基于时频偏移补偿值a1(时频偏移补偿值a1是根据TRS1的时频偏移估计结果生成的)对DMRS-1进行时频偏移补偿，进而解析DMRS-1，可得到传输DMRS-1的PDSCH的信道估计值，该信道估计值可用于对该PDSCH中传输的数据进行解调；终端设备接收到PDSCH的DMRS-2后，可以基于时频偏移补偿值a2(时频偏移补偿值a2是根据TRS2的时频偏移估计结果生成的)对DMRS-2进行时频偏移补偿，进而解析DMRS-2，可得到传输DMRS-2的PDSCH的信道估计值，该信道估计值可用于对该PDSCH中传输的数据进行解调；终端设备接收到PDCCH的控制信号后，可以基于时频偏移补偿值a3(时频偏移补偿值a3是根据SSB5的时频偏移估计结果生成的)对控制信号进行时频偏移补偿，进而解析控制信号。In a possible implementation (referred to as implementation 1 for short), time-frequency offset compensation can be performed on each target signal based on each reference signal. For example, as shown in Figure 2b, the time-frequency offset estimation result of TRS1 can be used For PDSCH DMRS-1 time-frequency offset compensation, TRS2 time-frequency offset estimation results can be used for PDSCH DMRS-2 time-frequency offset compensation, SSB5 time-frequency offset estimation results can be used for PDCCH control Signal time-frequency offset compensation. In other words, after receiving the DMRS-1 of the PDSCH, the terminal device can perform the DMRS-1 based on the time-frequency offset compensation value a1 (the time-frequency offset compensation value a1 is generated based on the TRS1 time-frequency offset estimation result) Time-frequency offset compensation, and then analyze the DMRS-1, the channel estimation value of the PDSCH transmitting DMRS-1 can be obtained, and the channel estimation value can be used to demodulate the data transmitted in the PDSCH; the terminal device receives the DMRS- of the PDSCH After 2, the time-frequency offset compensation value a2 (the time-frequency offset compensation value a2 is generated according to the time-frequency offset estimation result of TRS2) can be performed on the DMRS-2 based on the time-frequency offset compensation value a2, and then the DMRS-2 can be analyzed. The channel estimation value of the PDSCH transmitting DMRS-2 can be obtained, and the channel estimation value can be used to demodulate the data transmitted in the PDSCH; after the terminal device receives the PDCCH control signal, it can be based on the time-frequency offset compensation value a3( The time-frequency offset compensation value a3 is generated according to the time-frequency offset estimation result of the SSB5) to perform time-frequency offset compensation on the control signal to analyze the control signal.

需要说明的是，在实现方式1中，以TRS1所对应的环路为例，时频偏移补偿值可以是不断更新的，比如，初始情形下，时频偏移补偿值可以为一个预设值a00，若在第1个TRS1周期接收到TRS1(为便于描述称为TRS1-1)，则可以采用a00对TRS1-1进行时频偏移补偿，并计算时频偏移补偿后的TRS1-1的时频偏移估计值，若该时频偏移估计值大于预设阈值，则生成时频偏移补偿值a01，并将TRS1所对应的环路的时频偏移补偿值更新为a01；若在第2个TRS1周期接收到TRS1-2，则可以采用a01对TRS1-2进行时频偏移补偿，并计算时频偏移补偿后的TRS1-2的时频偏移估计值，若该时频偏移估计值大于预设阈值，则生成时频偏移补偿值a02，并将TRS1所对应的环路的时频偏移补偿值更新为a02；若在第3个TRS1周期接收到TRS1-3，则可以采用a02对TRS1-3进行时频偏移补偿，并计算时频偏移补偿后的TRS1-3的时频偏移估计值，若该时频偏移估计值小于或等于预设阈值，则TRS1所对应的环路的时频偏移补偿值不变，仍为a02；以此类推。其中，预设阈值可以由本领域技术人员根据实际需要来设置，具体不做限定。It should be noted that in implementation 1, taking the loop corresponding to TRS1 as an example, the time-frequency offset compensation value can be continuously updated. For example, in the initial situation, the time-frequency offset compensation value can be a preset Value a00, if TRS1 is received in the first TRS1 cycle (referred to as TRS1-1 for ease of description), then a00 can be used to compensate TRS1-1 for time-frequency offset and calculate the time-frequency offset compensated TRS1- The time-frequency offset estimation value of 1, if the time-frequency offset estimation value is greater than the preset threshold, the time-frequency offset compensation value a01 is generated, and the time-frequency offset compensation value of the loop corresponding to TRS1 is updated to a01 ; If you receive TRS1-2 in the second TRS1 cycle, you can use a01 to compensate the time-frequency offset of TRS1-2, and calculate the time-frequency offset estimated value of TRS1-2 after the time-frequency offset compensation, if If the estimated time-frequency offset is greater than the preset threshold, the time-frequency offset compensation value a02 is generated, and the time-frequency offset compensation value of the loop corresponding to TRS1 is updated to a02; if it is received in the third TRS1 cycle TRS1-3, you can use a02 to perform time-frequency offset compensation on TRS1-3, and calculate the time-frequency offset estimated value of TRS1-3 after the time-frequency offset compensation, if the estimated time-frequency offset value is less than or equal to If the threshold is preset, the time-frequency offset compensation value of the loop corresponding to TRS1 remains unchanged and remains a02; and so on. The preset threshold can be set by those skilled in the art according to actual needs, and is not specifically limited.

在又一种可能的实现方式(简称为实现方式2)中，为节省成本，可以选择其中一个参考信号，比如选择TRS1，此时TRS1所对应的环路作为时频偏移补偿的主环路，TRS1的时频估计结果可以补偿所有信号的时频偏移。此种情形下，参见图2c所示，TRS1的时频偏移估计结果用于PDSCH的DMRS-1、PDSCH的DMRS-2以及PDCCH的控制信号的时频偏移补偿；TRS2的时频偏移估计结果用于校正其与TRS1的时频偏移估计结果之间的差值；SSB5的时频偏移估计结果用于校正其与TRS1的时频偏移估计结果之间的差值。也就是说，终端设备接收到PDSCH的DMRS-1后，可以基于时频偏移补偿值b1(时频偏移补偿值b1是根据TRS1的时频偏移估计结果生成的)对DMRS-1进行第一次时频偏移补偿，进而解析DMRS-1，可得到传输DMRS-1的PDSCH的信道估计值，该信道估计值可用于对该PDSCH中传输的数据进行解调；终端设备接收到PDSCH的DMRS-2后，可以基于时频偏移补偿值b1对DMRS-2进行第一次时频偏移补偿，以及基于时频偏移补偿值b2(时频偏移补偿值b2用于校正TRS2与TRS1的时频偏移估计结果之间的差值)对DMRS-2进行第二次时频偏移补偿，进而解析DMRS-2，可得到传输DMRS-2的PDSCH的信道估计值，该信道估计值可用于对该PDSCH中传输的数据进行解调；终端设备接收到PDCCH的控制信号后，可以基于时频偏移补偿值b1对控制信号进行第一次时频偏移补偿，以及基于时频偏移补偿值b3(时频偏移补偿值b3用于校正SSB5与TRS1的时频偏移估计结果之间的差值)对控制信号进行第二次时频偏移补偿，进而解析控制信号。In another possible implementation (referred to as implementation 2 for short), in order to save costs, one of the reference signals can be selected, for example, TRS1. At this time, the loop corresponding to TRS1 is used as the main loop for time-frequency offset compensation. , The time-frequency estimation result of TRS1 can compensate the time-frequency offset of all signals. In this case, referring to Figure 2c, the time-frequency offset estimation result of TRS1 is used for the time-frequency offset compensation of DMRS-1 of PDSCH, DMRS-2 of PDSCH and the control signal of PDCCH; the time-frequency offset of TRS2 The estimation result is used to correct the difference between it and the time-frequency offset estimation result of TRS1; the time-frequency offset estimation result of SSB5 is used to correct the difference between it and the time-frequency offset estimation result of TRS1. In other words, after receiving the DMRS-1 of the PDSCH, the terminal device can perform the DMRS-1 based on the time-frequency offset compensation value b1 (the time-frequency offset compensation value b1 is generated based on the TRS1 time-frequency offset estimation result) The first time-frequency offset compensation, and then the analysis of DMRS-1, can obtain the channel estimation value of the PDSCH transmitting DMRS-1, the channel estimation value can be used to demodulate the data transmitted in the PDSCH; the terminal device receives the PDSCH After the DMRS-2, the DMRS-2 can be compensated for the first time-frequency offset based on the time-frequency offset compensation value b1, and based on the time-frequency offset compensation value b2 (the time-frequency offset compensation value b2 is used to correct TRS2 The difference between the time-frequency offset estimation result of TRS1 and the time-frequency offset estimation result of TRS1) performs the second time-frequency offset compensation on DMRS-2, and then analyzes DMRS-2 to obtain the channel estimation value of PDSCH transmitting DMRS-2. The estimated value can be used to demodulate the data transmitted in the PDSCH; after receiving the PDCCH control signal, the terminal device can perform the first time-frequency offset compensation on the control signal based on the time-frequency offset compensation value b1, and The frequency offset compensation value b3 (the time-frequency offset compensation value b3 is used to correct the difference between the time-frequency offset estimation results of SSB5 and TRS1) performs the second time-frequency offset compensation on the control signal to analyze the control signal .

需要说明的是，在实现方式2中，以第一次时频偏移补偿为例，时频偏移补偿值可以是不断更新的，其更新方式参见上述实现方式1中的描述。It should be noted that in the implementation manner 2, taking the first time-frequency offset compensation as an example, the time-frequency offset compensation value may be continuously updated, and the update method can be referred to the description in the foregoing implementation manner 1.

然而，由于实现方式1中是基于各个环路上的参考信号对各个目标信号进行时频偏移补偿，因此，每个环路上的时频偏移补偿值是独立的，而实现方式2中，主环路的时频偏移补偿直接作用到其它环路，如此，在进行时频偏移补偿值更新时，若更新的时刻不合理，则可能会导致其它环路上的时频偏移估计值不够准确，从而无法准确接收信号。However, since implementation 1 performs time-frequency offset compensation on each target signal based on the reference signal on each loop, the time-frequency offset compensation value on each loop is independent, while in implementation 2, the main The time-frequency offset compensation of the loop directly affects other loops. Therefore, when the time-frequency offset compensation value is updated, if the update time is unreasonable, it may lead to insufficient time-frequency offset estimates on other loops. Accurate, so that the signal cannot be received accurately.

下面以频偏估计为例，分析如下：Taking frequency offset estimation as an example, the analysis is as follows:

Δθ＝2*π*Δf*t……公式1Δθ=2*π*Δf*t……Formula 1

其中，Δθ表示相位偏差，t表示时间，Δf表示频偏。Among them, Δθ represents phase deviation, t represents time, and Δf represents frequency deviation.

根据公式1可知，在频偏一定的情况下，相位偏差是时间的函数，因此可以根据相位偏差计算得到频偏。According to formula 1, when the frequency deviation is constant, the phase deviation is a function of time, so the frequency deviation can be calculated according to the phase deviation.

下面以图2a所示意的TRS的资源分布来介绍基于TRS进行相位偏差估计的步骤。图2a中，TRS的4列符号分布在时隙n的第6个符号和第10个符号，时隙n+1的的第6个符号和第10个符号。The following uses the TRS resource distribution as shown in FIG. 2a to introduce the steps of phase deviation estimation based on TRS. In Fig. 2a, the 4 columns of TRS symbols are distributed in the 6th symbol and the 10th symbol of the time slot n, and the 6th symbol and the 10th symbol of the time slot n+1.

其中，时隙n内的第6个符号和第10个符号之间通过叉积运算可得到相位偏差Δθ ₁，进一步地，根据上述公式1，可知： Among them, the phase deviation Δθ ₁ can be obtained through the cross product operation between the 6th symbol and the 10th symbol in the time slot n. Furthermore, according to the above formula 1, it can be known that:

Δθ ₁＝2π*Δf _x*Δt ₁……公式2 Δθ ₁ =2π*Δf _x *Δt ₁ ……Formula 2

其中，Δt ₁表示时隙n内的第6个符号和第10个符号之间的时间差，Δf _x表示时隙n内的第6个符号和第10个符号之间的频偏。 Among them, Δt ₁ represents the time difference between the 6th symbol and the 10th symbol in time slot n, and Δf _x represents the frequency offset between the 6th symbol and the 10th symbol in time slot n.

进而可得：Then we can get:

采用同样的方式可得，时隙n的第10个符号和时隙n+1的第6个符号之间的频偏为：In the same way, the frequency offset between the 10th symbol of time slot n and the 6th symbol of time slot n+1 is:

其中，Δθ ₁表示时隙n的第10个符号和时隙n+1的第6个符号之间的相位偏差，Δt ₂表示时隙n内的第10个符号和第6个符号之间的时间差，Δf _y表示时隙n内的第10个符号和第6个符号之间的频偏。 Among them, Δθ ₁ represents the phase deviation between the 10th symbol of time slot n and the 6th symbol of time slot n+1, and Δt ₂ represents the difference between the 10th symbol and the 6th symbol in time slot n Time difference, Δf _y represents the frequency offset between the 10th symbol and the 6th symbol in slot n.

频偏估计的基本假设是：多符号之间频偏相同，不同符号之间得到的频偏进行合并，可得到频偏估计值。因此，将上述Δf _x与Δf _y进行合并，可得到TRS的频偏估计值。其中，合并的方式可以有多种，比如求取平均值。 The basic assumption of frequency offset estimation is: the frequency offset between multiple symbols is the same, and the frequency offsets obtained between different symbols are combined to obtain the frequency offset estimation value. Therefore, by combining the above Δf _x and Δf _y , the frequency offset estimation value of TRS can be obtained. Among them, there can be multiple ways of merging, such as obtaining an average value.

需要说明的是，上述仅是将时隙n内的第6个符号和第10个符号之间的频偏以及时隙n的第10个符号和时隙n+1的第6个符号之间的频偏进行合并得到TRS的频偏估计值，在其它可能的方式中，还可以求取时隙n内的第6个符号和时隙n+1的第10个符号之间的频偏，进而将三项频偏进行合并得到TRS的频偏估计值。It should be noted that the above is only to compare the frequency offset between the 6th symbol and the 10th symbol in time slot n, and between the 10th symbol of time slot n and the 6th symbol of time slot n+1. The frequency offsets of, are combined to obtain the frequency offset estimation value of TRS. In other possible ways, the frequency offset between the 6th symbol in time slot n and the 10th symbol in time slot n+1 can also be obtained. Then the three frequency offsets are combined to obtain the frequency offset estimation value of TRS.

根据上述分析，举个例子，参见图2d所示，TRS1位于时隙n和时隙n+1，TRS2位于时隙n+2和时隙n+3，SSB5位于时隙n+4和时隙n+5，则终端设备在时隙n和时隙n+1接收到TRS1并生成新的时频偏移补偿值后，若在时隙n+2的结束时刻更新时频频移补偿值，则会导致TRS2的频偏估计结果不准确，同样地，也会导致TRS2的时频估计结果不准确。Based on the above analysis, for example, see Figure 2d, TRS1 is located in time slot n and time slot n+1, TRS2 is located in time slot n+2 and time slot n+3, and SSB5 is located in time slot n+4 and time slot n+5, after the terminal device receives TRS1 in time slot n and time slot n+1 and generates a new time-frequency offset compensation value, if the time-frequency offset compensation value is updated at the end of time slot n+2, then It will cause the TRS2 frequency offset estimation result to be inaccurate, and similarly, it will also cause the TRS2 time-frequency estimation result to be inaccurate.

基于此，本申请实施例提供一种通信方法及装置，用于解决时频偏移补偿值的配置时刻不合理，而导致时频偏移估计值不够准确的技术问题。本申请实施例提供的方法可应用于接收端设备。本申请实施例中，发送端设备可以为图1b中所示意的网络设备101，接收端设备可以为图1b中所示意的终端设备102；或者，发送端设备可以包括图1c中所示意的网络设备1031和网络设备1032，接收端设备可以为图1c中所示意的终端设备104；具体不做限定。Based on this, the embodiments of the present application provide a communication method and device, which are used to solve the technical problem that the time-frequency offset compensation value configuration is unreasonable, and the time-frequency offset estimation value is not accurate enough. The method provided in the embodiment of the present application can be applied to the receiving end device. In the embodiment of the present application, the sending end device may be the network device 101 shown in FIG. 1b, and the receiving end device may be the terminal device 102 shown in FIG. 1b; or the sending end device may include the network shown in FIG. 1c The device 1031 and the network device 1032, and the receiving end device may be the terminal device 104 shown in FIG. 1c; the details are not limited.

具体来说，该方法可以包括：接收参考信号a，并对参考信号a进行时频偏移补偿；其中，对参考信号a进行时频偏移补偿所使用的时频偏移补偿值是在接收参考信号a之前配置的，参考信号a为首次使用时频补偿值的参考信号。Specifically, the method may include: receiving a reference signal a, and performing time-frequency offset compensation on the reference signal a; wherein the time-frequency offset compensation value used for performing the time-frequency offset compensation on the reference signal a is The reference signal a is configured before the reference signal a, and the reference signal a is the reference signal for which the time-frequency compensation value is used for the first time.

如此，一方面，由于对参考信号a进行时频偏移补偿所使用的时频偏移补偿值是在接收参考信号a之前配置的，从而使得参考信号a是基于配置后的时频偏移补偿值进行补偿的，避免时频偏移补偿值的配置时刻不合理而导致基于补偿后的参考信号a计算的时频偏移估计值不准确的问题，另一方面，参考信号a为首次使用时频补偿值的参考信号，由于时频偏移补偿值是接收到首次使用该时频频移补偿值的参考信号b之前配置的，从而使得后续参考信号均可以基于该时频偏移补偿值进行补偿，有效保证基于补偿后的后续参考信号计算的时频偏移估计值的准确性。In this way, on the one hand, since the time-frequency offset compensation value used for the time-frequency offset compensation of the reference signal a is configured before the reference signal a is received, the reference signal a is based on the configured time-frequency offset compensation To avoid the problem that the time-frequency offset compensation value configuration is not reasonable and the time-frequency offset estimation value calculated based on the compensated reference signal a is inaccurate. On the other hand, the reference signal a is used for the first time The reference signal of the frequency compensation value, because the time-frequency offset compensation value is configured before the reference signal b that uses the time-frequency offset value for the first time, so that subsequent reference signals can be compensated based on the time-frequency offset compensation value , Which effectively guarantees the accuracy of the estimated time-frequency offset calculated based on the subsequent reference signal after compensation.

在一个示例中，时频偏移补偿值可以是在参考信号a所在的首个时隙的开始时刻配置的。In an example, the time-frequency offset compensation value may be configured at the beginning of the first time slot where the reference signal a is located.

在又一个示例中，时频偏移补偿值是在参考信号a所在的首个时隙之前的第一时隙的开始时刻配置的。此种情形下，若参考信号b所在的时隙包括第一时隙和第二时隙，第二时隙与第一时隙相邻且位于第一时隙之前；参考信号b为用于时频偏移估计的参考信号，则可以放弃使用时频偏移补偿值对参考信号b进行时频偏移补偿。需要说明的是，在其它可能的实施例中，也可以接收并使用上述时频偏移补偿值对参考信号b进行时频偏移补偿，具体实现可以参见下文。In another example, the time-frequency offset compensation value is configured at the beginning of the first time slot before the first time slot where the reference signal a is located. In this case, if the time slot in which the reference signal b is located includes the first time slot and the second time slot, the second time slot is adjacent to and before the first time slot; the reference signal b is used for time For the reference signal for frequency offset estimation, the time-frequency offset compensation value can be used to perform time-frequency offset compensation on the reference signal b. It should be noted that in other possible embodiments, the above-mentioned time-frequency offset compensation value may also be received and used to perform time-frequency offset compensation on the reference signal b. For specific implementation, please refer to the following.

需要说明的是，上述所描述的参考信号1和参考信号2可以为主环路上的参考信号(比如前文所述的TRS1)以外的参考信号，具体不做限定。It should be noted that the reference signal 1 and the reference signal 2 described above may be reference signals other than the reference signal on the main loop (for example, the TRS1 described above), and the details are not limited.

下面结合图3对本申请实施例所提供的方法进行具体描述，其中包括配置时频偏移补偿值(或者说更新时频偏移补偿值)以及时频偏移补偿的具体实现。The method provided by the embodiment of the present application will be described in detail below in conjunction with FIG. 3, which includes configuring the time-frequency offset compensation value (or updating the time-frequency offset compensation value) and the specific implementation of the time-frequency offset compensation.

图3为本申请实施例提供的通信方法所对应的流程示意图，如图3所示，该方法包括：FIG. 3 is a schematic diagram of the process corresponding to the communication method provided by an embodiment of the application. As shown in FIG. 3, the method includes:

步骤301，接收发送端设备发送的第一参考信号。Step 301: Receive the first reference signal sent by the sending end device.

此处，第一参考信号所对应的环路可以为时频偏移补偿的主环路。Here, the loop corresponding to the first reference signal may be a main loop for time-frequency offset compensation.

步骤302，采用第i时频偏移补偿值对第一参考信号进行时频偏移补偿，根据时频偏移补偿后的第一参考信号，计算时频偏移补偿后的第一参考信号的第一时频偏移估计值，若第一时频偏移估计值大于预设阈值，则根据第一时频偏移估计值生成第i+1时频偏移补偿值。其中，预设阈值可以由本领域技术人员根据实际需要来设置，具体不做限定。Step 302: Perform time-frequency offset compensation on the first reference signal by using the i-th time-frequency offset compensation value, and calculate the value of the first reference signal after the time-frequency offset compensation according to the first reference signal after the time-frequency offset compensation. The first time-frequency offset estimation value, if the first time-frequency offset estimation value is greater than the preset threshold value, the (i+1)th time-frequency offset compensation value is generated according to the first time-frequency offset estimation value. The preset threshold can be set by those skilled in the art according to actual needs, and is not specifically limited.

步骤303，根据N个参考信号所在的时间单元，将所述第i时频偏移补偿值更新为所述第i+1时频偏移补偿值，i为正整数。其中，N个参考信号为用于时频偏移估计的信号，比如可以为TRS或SSB；N个参考信号可以包括第一参考信号。Step 303: Update the i-th time-frequency offset compensation value to the i+1-th time-frequency offset compensation value according to the time unit where the N reference signals are located, where i is a positive integer. Wherein, the N reference signals are signals used for time-frequency offset estimation, such as TRS or SSB; the N reference signals may include the first reference signal.

此处，N个参考信号可以均不具有准共址QCL关系(比如表1中所示意的TRS1、TRS2、SSB5)，或者，在其它可能的情形中(比如为某一信道配置有多个具有QCL关系的参考信号，多个参考信号可以用于不同维度的时频偏移估计)，N个参考信号中的部分参考信号也可以具有准共址QCL关系。下文中将主要以N个参考信号不具有准共址QCL关系为例进行描述。Here, the N reference signals may not have a quasi co-located QCL relationship (such as TRS1, TRS2, SSB5 as shown in Table 1), or in other possible situations (such as configuring a channel with multiple For reference signals with a QCL relationship, multiple reference signals may be used for time-frequency offset estimation of different dimensions), and some of the N reference signals may also have a quasi co-located QCL relationship. In the following, description will be made mainly by taking N reference signals not having a quasi co-located QCL relationship as an example.

具体来说，接收端设备可以接收发送端设备发送的N个参考信号的配置信息，配置信息用于指示N个参考信号所在的时间单元，如此，接收端设备可以获取N个参考信号所在的时间单元，其中，时间单元可以为时隙。配置信息所包括的具体内容可以参见上文中的描述。Specifically, the receiving end device can receive the configuration information of the N reference signals sent by the sending end device, and the configuration information is used to indicate the time unit where the N reference signals are located. In this way, the receiving end device can obtain the time where the N reference signals are located. Unit, where the time unit may be a time slot. For the specific content included in the configuration information, refer to the above description.

进一步地，接收端设备可以根据N个参考信号所在的时间单元，若确定在生成第i+1时频偏移补偿值的时刻之后的设定时间段内存在至少一个备选时刻，则在距离生成第i+1时频偏移补偿值的时刻最近的备选时刻将第i时频偏移补偿值更新为第i+1时频偏移补偿值；其中，生成第i+1时频偏移补偿值的时刻之后的设定时间段可以为生成第i+1时频偏移补偿值的时刻至下一周期的第一参考信号所在时间单元的起始时刻之间的时间长度。举个例子，参见图4a所示，第一参考信号的周期为6个时间单元的时间长度，当前接收到的第一参考信号所在的时间单元包括时间单元1和时间单元2，下一周期的第一参考信号所在的时间单元包括时间单元7和时间单元8，则生成第i+1时频偏移补偿值的时刻至时间单元7的起始时刻之间的时间长度即为设定时间段。Further, the receiving end device may, according to the time unit where the N reference signals are located, if it is determined that there is at least one candidate time in the set time period after the time when the i+1th time-frequency offset compensation value is generated, then the distance The latest alternative moment at which the i+1th time-frequency offset compensation value is generated updates the i-th time-frequency offset compensation value to the i+1th time-frequency offset compensation value; where the i+1th time-frequency offset is generated The set time period after the time when the compensation value is shifted may be the length of time between the time when the (i+1)th time-frequency offset compensation value is generated and the start time of the time unit where the first reference signal of the next cycle is located. For example, referring to Figure 4a, the period of the first reference signal is 6 time units, and the time unit where the first reference signal is currently received includes time unit 1 and time unit 2. The time unit where the first reference signal is located includes time unit 7 and time unit 8. The length of time between the time when the i+1-th time-frequency offset compensation value is generated and the start time of time unit 7 is the set time period .

本申请实施例中，至少一个备选时刻中的每个备选时刻符合如下条件：位于第一时间单元的结束位置或第二时间单元的起始位置；针对于N个参考信号中的每个参考信号，若参考信号所在的时间单元若包括第一时间单元，则不包括第二时间单元，或者，若包括第二时间单元，则不包括第一时间单元。举个例子，参见图4b所示，N个参考信号包括第一参考信号、参考信号2和参考信号3，其中，第一参考信号所在的时间单元包括时间单元1和时间单元2，参考信号2所在的时间单元包括时间单元3和时间单元4，参考信号3所在的时间单元包括时间单元5和时间单元6，则符合条件的备选时刻可以为：时间单元3的起始时刻(或时间单元2的结束时刻)、时间单元5的起始时刻(或时间单元4的结束时刻)、时间单元7的起始时刻(或时间单元6的结束时刻)。In the embodiment of the present application, each of the at least one candidate moment meets the following conditions: located at the end position of the first time unit or the start position of the second time unit; for each of the N reference signals For the reference signal, if the time unit where the reference signal is located includes the first time unit, the second time unit is not included, or if the second time unit is included, the first time unit is not included. For example, referring to FIG. 4b, the N reference signals include a first reference signal, a reference signal 2, and a reference signal 3. The time unit in which the first reference signal is located includes time unit 1 and time unit 2, and reference signal 2 The time unit where the reference signal 3 is located includes time unit 3 and time unit 4, and the time unit where the reference signal 3 is located includes time unit 5 and time unit 6, then the eligible candidate moment can be: the start time of time unit 3 (or time unit 2), the start time of time unit 5 (or the end time of time unit 4), and the start time of time unit 7 (or the end time of time unit 6).

接收端设备若确定在生成第i+1时频偏移补偿值的时刻之后的设定时间段内不存在符合条件的备选时刻，举个例子，参见图4c所示，N个参考信号包括第一参考信号、参考信号2、参考信号3、参考信号4，第一参考信号所在的时间单元包括时间单元1和时间单元2，参考信号2所在的时间单元包括时间单元2和时间单元3，参考信号3所在的时间单元包括时间单元3和时间单元4，参考信号4所在的时间单元包括时间单元4和时间单元5，此种情形下，接收端设备可以在第一时刻将第i时频偏移补偿值更新为第i+1时频偏移补偿值。其中，第一时刻为第三时间单元的结束位置或第四时间单元的起始位置，第二参考信号所在的时间单元包括第三时间单元和第四时间单元，第二参考信号可以为参考信号2、参考信号3或参考信号4。当第二参考信号为参考信号2时，第一时刻可以为时间单元3的起始时刻(或时间单元2的结束时刻)；当第二参考信号为参考信号3时，第一时刻可以为时间单元4的起始时刻(或时间单元3的结束时刻)；当第二参考信号为参考信号4时，第一时刻可以为时间单元5的起始时刻(或时间单元4的结束时刻)。If the receiving end device determines that there are no eligible candidate moments within the set time period after the time when the i+1th time-frequency offset compensation value is generated, for example, see Figure 4c, where the N reference signals include First reference signal, reference signal 2, reference signal 3, reference signal 4. The time unit where the first reference signal is located includes time unit 1 and time unit 2, and the time unit where reference signal 2 is located includes time unit 2 and time unit 3. The time unit where the reference signal 3 is located includes time unit 3 and time unit 4, and the time unit where the reference signal 4 is located includes time unit 4 and time unit 5. In this case, the receiving end device can set the i-th time-frequency The offset compensation value is updated to the i+1th time-frequency offset compensation value. Wherein, the first moment is the end position of the third time unit or the start position of the fourth time unit, the time unit where the second reference signal is located includes the third time unit and the fourth time unit, and the second reference signal may be a reference signal 2. Reference signal 3 or reference signal 4. When the second reference signal is reference signal 2, the first time can be the start time of time unit 3 (or the end time of time unit 2); when the second reference signal is reference signal 3, the first time can be time The start time of unit 4 (or the end time of time unit 3); when the second reference signal is reference signal 4, the first time may be the start time of time unit 5 (or the end time of time unit 4).

进一步地，在一种可能的实现方式中，接收端设备可以放弃在第三时间单元和第四时间单元上接收第二参考信号，从而避免在第三时间单元和第四时间单元上接收到的第二参考信号的时频偏移估计结果不准确。后续，接收端设备接收到发送端设备发送的与第二参考信号具有QCL关系的第二目标信号后，可以采用上一次的时频偏移估计结果进行补偿。Further, in a possible implementation manner, the receiving end device can give up receiving the second reference signal on the third time unit and the fourth time unit, so as to avoid receiving the second reference signal on the third time unit and the fourth time unit. The time-frequency offset estimation result of the second reference signal is not accurate. Subsequently, after the receiving end device receives the second target signal that has a QCL relationship with the second reference signal sent by the transmitting end device, it may use the last time-frequency offset estimation result for compensation.

在又一种可能的实现方式中，接收端设备可以在第三时间单元和第四时间单元上接收第二参考信号，此时，第二参考信号包括位于第三时间单元的第一部分信号和位于第四时间单元的第二部分信号，接收端设备可以采用第i时频偏移补偿值对第一部分信号进行第一次时频偏移补偿，以及采用第i+1时频偏移补偿值和第i时频偏移补偿值的差值对第一次时频偏移补偿后的第一部分信号进行第二次时频偏移补偿，以及采用第i+1时频偏移补偿值对第二部分信号进行时频偏移补偿；进而根据第二次时频偏移补偿后的第一部分信号和时频偏移补偿后的第二部分信号，计算得到第二时频偏移估计值。由于对第一部分信号进行了两次时频偏移补偿，相当于采用第i+1时频偏移补偿值对第一部分信号进行时频偏移补偿，从而使得计算得到的第二时频偏移估计值较为准确。后续，接收端设备接收到发送端设备发送的与第二参考信号具有QCL关系的第二目标信号后，可以采用第i+1时频偏移补偿值对第二目标信号进行第一次时频偏移补偿，以及采用第二时频偏移估计值对第一次时频偏移补偿后的第二目标信号进行第二次时频偏移补偿，进而解调第二次时频偏移补偿后的第二目标信号。对第二目标信号进行时频偏移补偿的具体实现过程可以参见图2c所示，第二目标信号可以为图2c中PDSCH的DMRS-2，或者也可以为图2c中PDCCH的控制信号。In another possible implementation manner, the receiving end device may receive the second reference signal on the third time unit and the fourth time unit. At this time, the second reference signal includes the first part of the signal located in the third time unit and For the second part of the signal of the fourth time unit, the receiving end device can use the i-th time-frequency offset compensation value to perform the first time-frequency offset compensation on the first part of the signal, and use the i+1-th time-frequency offset compensation value and The difference between the i-th time-frequency offset compensation value performs the second time-frequency offset compensation on the first part of the signal after the first time-frequency offset compensation, and the i+1-th time-frequency offset compensation value is used for the second time-frequency offset compensation. Part of the signal is subjected to time-frequency offset compensation; and then a second time-frequency offset estimation value is calculated according to the first part signal after the second time-frequency offset compensation and the second part signal after the time-frequency offset compensation. Since the time-frequency offset compensation is performed twice on the first part of the signal, it is equivalent to using the i+1th time-frequency offset compensation value to perform the time-frequency offset compensation on the first part of the signal, so that the calculated second time-frequency offset The estimate is more accurate. Subsequently, after the receiving end device receives the second target signal that has a QCL relationship with the second reference signal sent by the transmitting end device, it may use the i+1th time-frequency offset compensation value to perform the first time-frequency operation on the second target signal. Offset compensation, and using the second time-frequency offset estimation value to perform the second time-frequency offset compensation on the second target signal after the first time-frequency offset compensation, and then demodulate the second time-frequency offset compensation After the second target signal. For a specific implementation process of time-frequency offset compensation for the second target signal, refer to FIG. 2c. The second target signal may be the DMRS-2 of the PDSCH in FIG. 2c, or may be the control signal of the PDCCH in FIG. 2c.

示例性地，以第二参考信号为图4c中所示意的参考信号2为例，则接收端设备将第i时频偏移补偿值更新为第i+1时频偏移补偿值之后，还包括：接收发送端设备发送的第三参考信号；采用第i+1时频偏移补偿值对第三参考信号进行时频偏移补偿，并计算时频偏移补偿后的第三参考信号的第三时频偏移估计值。后续，接收端设备若接收到发送端设备发送的与第三参考信号具有QCL关系的第三目标信号，则可以采用第i+1时频偏移补偿值对第三目标信号进行第一次时频偏移补偿，以及采用第三时频偏移估计值对第一次时频偏移补偿后的第三目标信号进行第二次时频偏移补偿，进而解析第二次时频偏移补偿后的第三目标信号。对第三目标信号进行时频偏移补偿的具体实现过程可以参见图2c所示，若第二目标信号为图2c中PDSCH的DMRS-2，则第三目标信号可以为图2c中PDCCH的控制信号；若第二目标信号为图2c中PDCCH的控制信号，则第三目标信号可以为图2c中PDSCH的DMRS-2。Exemplarily, taking the second reference signal as reference signal 2 shown in FIG. 4c as an example, after the receiving end device updates the i-th time-frequency offset compensation value to the i+1-th time-frequency offset compensation value, Including: receiving the third reference signal sent by the transmitting end device; using the i+1th time-frequency offset compensation value to perform time-frequency offset compensation on the third reference signal, and calculating the time-frequency offset compensation of the third reference signal The third time-frequency offset estimate. Subsequently, if the receiving end device receives the third target signal that has a QCL relationship with the third reference signal sent by the transmitting end device, it may use the i+1th time-frequency offset compensation value to perform the first time on the third target signal. Frequency offset compensation, and use the third time-frequency offset estimation value to perform the second time-frequency offset compensation on the third target signal after the first time-frequency offset compensation, and then analyze the second time-frequency offset compensation After the third target signal. The specific implementation process of time-frequency offset compensation for the third target signal can be seen in Figure 2c. If the second target signal is DMRS-2 of the PDSCH in Figure 2c, the third target signal can be the control of the PDCCH in Figure 2c. Signal; if the second target signal is the control signal of the PDCCH in Figure 2c, the third target signal may be the DMRS-2 of the PDSCH in Figure 2c.

本申请实施例中，接收端设备将第i时频偏移补偿值更新为第i+1时频偏移补偿值之后，若接收到发送端设备发送的与第一参考信号具有QCL关系的第一目标信号，则可以采用第i+1时频偏移补偿值对第一目标信号进行时频偏移补偿，并解析时频偏移补偿后的第一目标信号。对第一目标信号进行时频偏移补偿的具体实现过程可以参见图2c所示，第一目标信号为图2c中PDSCH的DMRS-1。In the embodiment of the present application, after the receiving end device updates the i-th time-frequency offset compensation value to the i+1-th time-frequency offset compensation value, if it receives the first reference signal sent by the transmitting end device that has a QCL relationship with the first reference signal For a target signal, the i+1th time-frequency offset compensation value may be used to perform time-frequency offset compensation on the first target signal, and to analyze the first target signal after the time-frequency offset compensation. For a specific implementation process of time-frequency offset compensation for the first target signal, refer to FIG. 2c, where the first target signal is DMRS-1 of the PDSCH in FIG. 2c.

上述主要从发送端设备和接收端设备之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，为了实现上述功能，发送端设备或接收端设备可以包括执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请的实施例能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。The foregoing mainly introduces the solution provided by the embodiment of the present application from the perspective of the interaction between the sending end device and the receiving end device. It can be understood that, in order to realize the above-mentioned functions, the sending end device or the receiving end device may include corresponding hardware structures and/or software modules that perform each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

在采用集成的单元(模块)的情况下，图5示出了本申请实施例中所涉及的装置的可能的示例性框图，该装置500可以以软件的形式存在。装置500可以包括：处理单元502和通信单元503。处理单元502用于对装置500的动作进行控制管理。通信单元503用于支持装置500与其他设备的通信。可选地，通信单元503也称为收发单元，可以包括接收单元和/或发送单元，分别用于执行接收和发送操作。装置500还可以包括存储单元501，用于存储装置500的程序代码和/或数据。In the case of an integrated unit (module), FIG. 5 shows a possible exemplary block diagram of a device involved in an embodiment of the present application, and the device 500 may exist in the form of software. The apparatus 500 may include: a processing unit 502 and a communication unit 503. The processing unit 502 is used to control and manage the actions of the device 500. The communication unit 503 is used to support communication between the apparatus 500 and other devices. Optionally, the communication unit 503 is also called a transceiving unit, and may include a receiving unit and/or a sending unit, which are used to perform receiving and sending operations, respectively. The device 500 may further include a storage unit 501 for storing program codes and/or data of the device 500.

其中，处理单元502可以是处理器或控制器，其可以实现或执行结合本申请的实施例公开内容所描述的各种示例性的逻辑方框，模块和电路。通信单元503可以是通信接口、收发器或收发电路等，其中，该通信接口是统称，在具体实现中，该通信接口可以包括多个接口。存储单元501可以是存储器。The processing unit 502 may be a processor or a controller, which may implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of the embodiments of the present application. The communication unit 503 may be a communication interface, a transceiver, or a transceiver circuit, etc., where the communication interface is a general term. In a specific implementation, the communication interface may include multiple interfaces. The storage unit 501 may be a memory.

该装置500可以为上述任一实施例中的接收端设备、或者还可以为设置在接收端设备中的半导体芯片。处理单元502可以支持装置500执行上文中各方法示例中接收端设备的动作。或者，处理单元502主要执行方法示例中的接收端设备内部动作，通信单元503可以支持装置500与其它设备之间的通信。The apparatus 500 may be the receiving device in any of the foregoing embodiments, or may also be a semiconductor chip provided in the receiving device. The processing unit 502 may support the apparatus 500 to execute the actions of the receiving end device in the foregoing method examples. Alternatively, the processing unit 502 mainly executes the internal actions of the receiving end device in the method example, and the communication unit 503 can support communication between the apparatus 500 and other devices.

具体地，在一个实施例中，通信单元用于接收第一参考信号；处理单元用于对所述第一参考信号进行时频偏移补偿；其中，对所述第一参考信号进行时频偏移补偿所使用的时频偏移补偿值是在接收所述第一参考信号之前配置的，所述第一参考信号为首次使用所述时频补偿值的参考信号。Specifically, in one embodiment, the communication unit is configured to receive a first reference signal; the processing unit is configured to perform time-frequency offset compensation on the first reference signal; wherein, the first reference signal is time-frequency offset The time-frequency offset compensation value used for the shift compensation is configured before receiving the first reference signal, and the first reference signal is the reference signal for which the time-frequency compensation value is used for the first time.

在一种可能的设计中，第二参考信号所在的时隙包括所述第一时隙和第二时隙，所述第二时隙与所述第一时隙相邻且位于所述第一时隙之前；所述第二参考信号为用于时频偏移估计的参考信号；In a possible design, the time slot in which the second reference signal is located includes the first time slot and the second time slot, and the second time slot is adjacent to the first time slot and located in the first time slot. Before the time slot; the second reference signal is a reference signal used for time-frequency offset estimation;

所述处理单元放弃使用所述时频偏移补偿值对所述第二参考信号进行时频偏移补偿。The processing unit abandons using the time-frequency offset compensation value to perform time-frequency offset compensation on the second reference signal.

需要说明的是，本申请实施例中对单元(模块)的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。在本申请的实施例中的各功能模块可以集成在一个处理模块中，也可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。It should be noted that the division of units (modules) in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation. The functional modules in the embodiments of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.

所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质可以为存储器等各种可以存储程序代码的介质。If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application essentially or the part that contributes to the prior art or all or part of the technical solutions can be embodied in the form of software products, and the computer software products are stored in a storage The medium includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium may be various mediums capable of storing program codes, such as a memory.

图6给出了一种装置的结构示意图，该装置600包括处理器610、存储器620和收发器630。在一个示例中，该装置600可以实现图5所示意出的装置500的功能，具体来说，图5中所示意的通信单元503的功能可以由收发器实现，处理单元502的功能可由处理器实现，存储单元501的功能可以由存储器实现。在又一个示例中，该装置600可以是上述方法实施例中的终端设备，该装置600可用于实现上述方法实施例中描述的对应于终端设备的方法，具体可以参见上述方法实施例中的说明。FIG. 6 shows a schematic structural diagram of a device. The device 600 includes a processor 610, a memory 620, and a transceiver 630. In an example, the device 600 can implement the functions of the device 500 illustrated in FIG. 5. Specifically, the functions of the communication unit 503 illustrated in FIG. 5 may be implemented by a transceiver, and the functions of the processing unit 502 may be implemented by a processor. Implementation, the function of the storage unit 501 can be implemented by a memory. In another example, the device 600 may be the terminal device in the above method embodiment, and the device 600 may be used to implement the method corresponding to the terminal device described in the above method embodiment. For details, please refer to the description in the above method embodiment. .

图7为本申请实施例提供的一种终端设备700的结构示意图。为了便于说明，图7仅示出了终端设备的主要部件。如图7所示，终端设备700包括处理器、存储器、控制电路、天线以及输入输出装置。该终端设备700可应用于如图1b和1c所示的***架构中，执行上述方法实施例中终端设备的功能。FIG. 7 is a schematic structural diagram of a terminal device 700 provided by an embodiment of this application. For ease of description, FIG. 7 only shows the main components of the terminal device. As shown in FIG. 7, the terminal device 700 includes a processor, a memory, a control circuit, an antenna, and an input and output device. The terminal device 700 can be applied to the system architecture shown in FIGS. 1b and 1c to perform the functions of the terminal device in the foregoing method embodiment.

处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端设备进行控制，执行软件程序，处理软件程序的数据，例如用于控制终端设备执行上述方法实施例中所描述的动作。存储器主要用于存储软件程序和数据。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。控制电路和天线一起也可以叫做收发器，主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。The processor is mainly used to process the communication protocol and communication data, and to control the entire terminal device, execute the software program, and process the data of the software program, for example, to control the terminal device to perform the actions described in the above method embodiment. The memory is mainly used to store software programs and data. The control circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals. The control circuit and the antenna together can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.

当终端设备开机后，处理器可以读取存储单元中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.

本领域技术人员可以理解，为了便于说明，图7仅示出了一个存储器和处理器。在实际的终端设备中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本申请实施例对此不做限制。Those skilled in the art can understand that, for ease of description, FIG. 7 only shows a memory and a processor. In actual terminal devices, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.

作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图7中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。该基带处理器也可以表述为基带处理电路或者基带处理芯片。该中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。As an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication protocols and communication data. The central processing unit is mainly used to control the entire terminal device and execute Software program, processing the data of the software program. The processor in FIG. 7 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors and are interconnected by technologies such as buses. Those skilled in the art can understand that the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and various components of the terminal device may be connected through various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

图7所示的终端设备700能够实现图3所示意的方法实施例中涉及终端设备的各个过程。终端设备700中的各个模块的操作和/或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详述描述。The terminal device 700 shown in FIG. 7 can implement various processes involving the terminal device in the method embodiment shown in FIG. 3. The operations and/or functions of each module in the terminal device 700 are respectively for implementing the corresponding processes in the foregoing method embodiments. For details, please refer to the descriptions in the above method embodiments. To avoid repetition, detailed descriptions are appropriately omitted here.

在实现过程中，本实施例提供的方法中的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。In the implementation process, each step in the method provided in this embodiment can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.

应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用中央处理器(central processing unit，CPU)，通用处理器，数字信号处理(digital signal processing，DSP)，专用集成电路(application specific integrated circuits，ASIC)，现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合；也可以是实现计算功能的组合，例如包括一个或多个微处理器组合，DSP和微处理器的组合等等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。It should be noted that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The aforementioned processor may be a general-purpose central processing unit (central processing unit, CPU), general-purpose processor, digital signal processing (digital signal processing, DSP), application specific integrated circuits (ASIC), field programmable gate array Field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof; it can also be a combination that implements computing functions, such as a combination of one or more microprocessors, DSP and micro-processing The combination of the device and so on. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

可以理解，本申请实施例中的存储器或存储单元可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的***和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。It can be understood that the memory or storage unit in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时，全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器等数据存储设备。所述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，DVD；还可以是半导体介质，例如，固态硬盘(solid state disk，SSD)。In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on the computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted through the computer-readable storage medium. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server integrating one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, and a magnetic tape; it may also be an optical medium, such as a DVD; it may also be a semiconductor medium, such as a solid state disk (SSD).

本申请实施例中所描述的各种说明性的逻辑单元和电路可以通过通用处理器，数字信号处理器，专用集成电路(ASIC)，现场可编程门阵列(FPGA)或其它可编程逻辑装置，离散门或晶体管逻辑，离散硬件部件，或上述任何组合的设计来实现或操作所描述的功能。通用处理器可以为微处理器，可选地，该通用处理器也可以为任何传统的处理器、控制器、微控制器或状态机。处理器也可以通过计算装置的组合来实现，例如数字信号处理器和微处理器，多个微处理器，一个或多个微处理器联合一个数字信号处理器核，或任何其它类似的配置来实现。The various illustrative logic units and circuits described in the embodiments of this application can be implemented by general-purpose processors, digital signal processors, application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, Discrete gates or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the described functions. The general-purpose processor may be a microprocessor, and optionally, the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration achieve.

本申请实施例中所描述的方法或算法的步骤可以直接嵌入硬件、处理器执行的软件单元、或者这两者的结合。软件单元可以存储于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、可移动磁盘、CD-ROM或本领域中其它任意形式的存储媒介中。示例性地，存储媒介可以与处理器连接，以使得处理器可以从存储媒介中读取信息，并可以向存储媒介存写信息。可选地，存储媒介还可以集成到处理器中。处理器和存储媒介可以设置于ASIC中，ASIC可以设置于终端设备中。可选地，处理器和存储媒介也可以设置于终端设备中的不同的部件中。The steps of the method or algorithm described in the embodiments of the present application can be directly embedded in hardware, a software unit executed by a processor, or a combination of the two. The software unit can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other storage medium in the field. Exemplarily, the storage medium may be connected to the processor, so that the processor can read information from the storage medium, and can store and write information to the storage medium. Optionally, the storage medium may also be integrated into the processor. The processor and the storage medium can be arranged in an ASIC, and the ASIC can be arranged in a terminal device. Optionally, the processor and the storage medium may also be arranged in different components in the terminal device.

这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

尽管结合具体特征对本申请实施例进行了描述，显而易见的，在不脱离本申请实施例的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请实施例的示例性说明，且视为已覆盖本申请实施例范围内的任意和所有修改、变化、组合或等同物。Although the embodiments of the present application have been described in combination with specific features, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the embodiments of the present application. Correspondingly, this specification and drawings are merely exemplary descriptions of the embodiments of the present application defined by the appended claims, and are deemed to cover any and all modifications, changes, combinations or equivalents within the scope of the embodiments of the present application.

Claims

一种通信方法，其特征在于，所述方法包括：A communication method, characterized in that the method includes:

接收第一参考信号；Receiving the first reference signal;

对所述第一参考信号进行时频偏移补偿；Performing time-frequency offset compensation on the first reference signal;

其中，对所述第一参考信号进行时频偏移补偿所使用的时频偏移补偿值是在接收所述第一参考信号之前配置的，所述第一参考信号为首次使用所述时频补偿值的参考信号。Wherein, the time-frequency offset compensation value used for time-frequency offset compensation of the first reference signal is configured before receiving the first reference signal, and the first reference signal is the first time the time-frequency offset is used. Reference signal for compensation value.
根据权利要求1所述的方法，其特征在于：The method according to claim 1, wherein:

所述时频偏移补偿值是在所述第一参考信号所在的首个时隙的开始时刻配置的。The time-frequency offset compensation value is configured at the beginning of the first time slot where the first reference signal is located.
根据权利要求1所述的方法，其特征在于：The method according to claim 1, wherein:

所述时频偏移补偿值是在所述第一参考信号所在的首个时隙之前的第一时隙的开始时刻配置的。The time-frequency offset compensation value is configured at the beginning of the first time slot before the first time slot where the first reference signal is located.
根据权利要求3所述的方法，其特征在于：The method according to claim 3, characterized in that:

第二参考信号所在的时隙包括所述第一时隙和第二时隙，所述第二时隙与所述第一时隙相邻且位于所述第一时隙之前；所述第二参考信号为用于时频偏移估计的参考信号；The time slot in which the second reference signal is located includes the first time slot and the second time slot, and the second time slot is adjacent to the first time slot and located before the first time slot; the second time slot The reference signal is a reference signal used for time-frequency offset estimation;

所述方法还包括：放弃使用所述时频偏移补偿值对所述第二参考信号进行时频偏移补偿。The method further includes: abandoning time-frequency offset compensation for the second reference signal using the time-frequency offset compensation value.
一种通信装置，其特征在于，所述装置包括：A communication device, characterized in that the device includes:

通信单元，用于接收第一参考信号；A communication unit for receiving the first reference signal;

处理单元，用于对所述第一参考信号进行时频偏移补偿；A processing unit, configured to perform time-frequency offset compensation on the first reference signal;

其中，对所述第一参考信号进行时频偏移补偿所使用的时频偏移补偿值是在接收所述第一参考信号之前配置的，所述第一参考信号为首次使用所述时频补偿值的参考信号。Wherein, the time-frequency offset compensation value used for time-frequency offset compensation of the first reference signal is configured before receiving the first reference signal, and the first reference signal is the first time the time-frequency offset is used. Reference signal for compensation value.
根据权利要求5所述的装置，其特征在于：The device according to claim 5, wherein:

所述时频偏移补偿值是在所述第一参考信号所在的首个时隙的开始时刻配置的。The time-frequency offset compensation value is configured at the beginning of the first time slot where the first reference signal is located.
根据权利要求5所述的装置，其特征在于：The device according to claim 5, wherein:

所述时频偏移补偿值是在所述第一参考信号所在的首个时隙之前的第一时隙的开始时刻配置的。The time-frequency offset compensation value is configured at the beginning of the first time slot before the first time slot where the first reference signal is located.
根据权利要求7所述的装置，其特征在于：The device according to claim 7, characterized in that:

第二参考信号所在的时隙包括所述第一时隙和第二时隙，所述第二时隙与所述第一时隙相邻且位于所述第一时隙之前；所述第二参考信号为用于时频偏移估计的参考信号；The time slot in which the second reference signal is located includes the first time slot and the second time slot, and the second time slot is adjacent to the first time slot and located before the first time slot; the second time slot The reference signal is a reference signal used for time-frequency offset estimation;

所述处理单元放弃使用所述时频偏移补偿值对所述第二参考信号进行时频偏移补偿。The processing unit abandons using the time-frequency offset compensation value to perform time-frequency offset compensation on the second reference signal.
一种通信装置，其特征在于，所述通信装置包括处理器和存储器，所述处理器用于执行存储在所述存储器上的指令，当所述指令被运行时，使得所述装置执行如权利要求1至4中任一项所述的方法。A communication device, wherein the communication device includes a processor and a memory, the processor is used to execute instructions stored on the memory, and when the instructions are executed, the device executes The method of any one of 1 to 4.
一种计算机可读存储介质，其特征在于，包括指令，当所述指令被执行时，实现如权利要求1至4中任一项所述的方法。A computer-readable storage medium, characterized by comprising instructions, which when executed, implement the method according to any one of claims 1 to 4.
一种计算机程序产品，其特征在于，当其在计算机上运行时，使得计算机执行权利要求1至4任一项所述的方法。A computer program product, characterized in that, when it runs on a computer, it causes the computer to execute the method of any one of claims 1 to 4.