A communication method and device

Abstract

A communication method and apparatus, the method comprising: a terminal device determines a first transmission time and a second transmission time, the first transmission time includes X1 time units, the second transmission time includes X2 time units, and the first transmission time and the second transmission time do not overlap. The terminal device sends a first reference signal in the first transmission time, and sends a first uplink signal in the second transmission time, the first uplink signal includes at least one of PUSCH, PUCCH or DMRS. Therefore, the terminal device can improve the estimation performance of the network device for the uplink channel by additionally sending the first reference signal, thereby improving the coverage performance of the communication system.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0002] In wireless communications, for some deep coverage scenarios, such as the edge of a cell or a basement, the path loss of wireless signals is very serious. In this case, coverage enhancement measures need to be considered, among which improving coverage performance for uplink transmission is particularly important. The reason is that the transmit power of terminal devices is often low, such as 23dBm, which is much lower than the transmit power of network devices (for example, a base station (gNodeB, gNB) with a bandwidth of 20MHz has a typical transmit power of 46dBm). In particular, in some deep coverage scenarios, the network equipment has poor estimation performance for uplink channels, and inaccurate uplink channel estimation will seriously affect the network equipment's demodulation of uplink data sent by the terminal device, which may cause the network device to be unable to correctly receive the uplink signal sent by the terminal device. Therefore, improving the network equipment's estimation performance for uplink channels is a feasible means to improve coverage performance for uplink transmission.

[0003] At present, in the new radio (NR) system, gNB mainly uses the demodulation reference signal (DMRS) for uplink channel estimation. Take the user equipment (UE) sending the physical uplink shared channel (PUSCH) in a time slot as an example. Usually, a time slot includes 14 orthogonal frequency division multiplexing (OFDM) symbols. The UE can select one or more OFDM symbols to send DMRS on 1 to 4 OFDM symbols, for example Figure 1 The third OFDM symbol is used in the transmission, and uplink data is sent on the remaining OFDM symbols.

[0004] Figure 1A schematic diagram of gNB scheduling UE to transmit PUSCH by sending downlink control information (DCI) is given in FIG. Among them, in which OFDM symbols the UE sends DMRS depends on the configuration of the gNB to the UE. In addition to scheduling transmission through DCI, NR can also use the method of configured grant (or grant free). Specifically, the gNB configures transmission resources for the UE through radio resource control (RRC) signaling, and the UE decides whether to perform uplink transmission based on whether it has data services. However, whether it is dynamically scheduled transmission through DCI or configured grant transmission, uplink data and DMRS are always sent together, and once semi-statically configured, the number and position of OFDM symbols in which DMRS can be sent in a time slot are determined, and the ratio of the number of OFDM symbols occupied by uplink data to the number of OFDM symbols occupied by DMRS is relatively fixed. Therefore, in some deep coverage scenarios, the gNB's estimation performance for the uplink channel is poor, which may cause the gNB to be unable to correctly receive the uplink signal sent by the UE. Summary of the invention

[0005] The embodiments of the present application provide a communication method and apparatus for improving the estimation performance of an uplink channel by a network device.

[0006] In a first aspect, an embodiment of the present application provides a communication method, the method comprising: a terminal device determines a first transmission time and a second transmission time, sends a first reference signal in the first transmission time, and sends a first uplink signal in the second transmission time, wherein the first transmission time includes X1 time units, the second transmission time includes X2 time units, the first transmission time and the second transmission time have no overlap, X1 is a positive integer, X2 is a positive integer, and the first uplink signal includes at least one of PUSCH, PUCCH or DMRS.

[0007] By adopting the above design, the terminal device can improve the estimation performance of the network device on the uplink channel by additionally sending the first reference signal, thereby improving the coverage performance of the communication system.

[0008] In one possible design, the terminal device may determine the first transmission time by using but not limited to the following method: the terminal device determines the first transmission time based on first indication information; wherein the first indication information indicates the ratio information of the number of time units included in the first transmission time to the number of time units included in the second transmission time; or, the first indication information indicates the number of time units included in the first transmission time.

[0009] In one possible design, the terminal device determines the first transmission time by using but not limited to the following method: the terminal device determines the first transmission time based on the ratio information of the number of time units included in the first transmission time indicated by the first indication information to the number of time units included in the second transmission time, and the second transmission time; or, the terminal device determines the first transmission time based on the number of time units included in the first transmission time indicated by the first indication information, and the second transmission time.

[0010] In one possible design, the terminal device determines the first transmission time by using but not limited to the following method: the terminal device determines the first transmission time based on the ratio information of the number of time units included in the first transmission time indicated by the first indication information to the number of time units included in the second transmission time, and the third transmission time; or, the terminal device determines the first transmission time based on the number of time units included in the first transmission time indicated by the first indication information, and the third transmission time; wherein the third transmission time is composed of the first transmission time and the second transmission time.

[0011] With the above design, the terminal device may determine the first transmission time in a variety of different ways.

[0012] In one possible design, in the first transmission time and the second transmission time, each consecutive N1+N2 time units includes consecutive N1 time units included in the first transmission time, and consecutive N2 time units included in the second transmission time, N1 is a positive integer less than or equal to X1, and N2 is a positive integer less than or equal to X2.

[0013] The above design can make the time units included in the first transmission time and the time units included in the second transmission time cross-distributed as much as possible. The network equipment can use the first reference signal between different time units to interpolate and estimate the channel occupied by the first uplink signal spaced between them, which is more suitable for situations where the terminal device moves faster and the channel changes faster.

[0014] In a possible design, N1 is the quotient of X1 divided by Z, N2 is the quotient of X2 divided by Z, and Z is the greatest common divisor of X1 and X2.

[0015] The above design can ensure that the first uplink signal and the first reference signal are arranged as evenly as possible, which is beneficial to improving the performance of channel interpolation estimation in a time-varying channel.

[0016] In a possible design, if the transmission mode of the terminal device is frequency hopping transmission between time units, when X1=X2, N1=N2=K, and K is a positive integer greater than 1 and less than or equal to X1.

[0017] The above design can avoid the situation where the frequency position of the first reference signal cannot include the frequency position of the first uplink signal, and can achieve the effect of improving the channel estimation accuracy.

[0018] In one possible design, the index of the start symbol of the first reference signal in the time domain symbol in the time unit included in the first transmission time is the same as the index of the start symbol of the first uplink signal in the time domain symbol in the time unit included in the second transmission time; and the index of the end symbol of the first reference signal in the time domain symbol in the time unit included in the first transmission time is the same as the index of the end symbol of the first uplink signal in the time domain symbol in the time unit included in the second transmission time.

[0019] With the above design, there is no need to additionally indicate the index of the start symbol and the index of the end symbol in the time domain symbols occupied by the first reference signal in the time unit included in the first transmission time, thereby saving signaling overhead.

[0020] In one possible design, the terminal device determines the time domain symbol occupied by the first reference signal in the time unit included in the first transmission time according to the third indication information. The third indication information indicates the index of the start symbol and the index of the end symbol in the time domain symbol occupied by the first reference signal in the time unit included in the first transmission time, or the third indication information indicates the index of the start symbol and the number of symbols occupied in the time domain symbol occupied by the first reference signal in the time unit included in the first transmission time. The third indication information may be configured by the network device through high-level signaling, or may be predefined by the protocol. If the third indication information is configured by the network device through high-level signaling, the third indication information may be a separate indication information, or may be the same message as the first indication information. With the above design, no matter how many time domain symbols in a time unit the network device schedules the terminal device to transmit the first uplink signal, the time domain symbol occupied by the first reference signal in the time unit included in the first transmission time will not change accordingly, and therefore, the performance of the network device in channel estimation through the first reference signal can be relatively stable.

[0021] In one possible design, the frequency domain resources occupied by the first reference signal are the same as the frequency domain resources occupied by the first uplink signal; or, the frequency domain resources occupied by the first reference signal include the frequency domain resources occupied by the first uplink signal and frequency domain resources of Y frequency domain units other than the frequency domain resources occupied by the first uplink signal, where Y is a positive integer.

[0022] The above method can ensure that the channel estimation result of the first reference signal can be used for demodulation of data carried in the first uplink signal of the same frequency.

[0023] In one possible design, the first indication information is included in a radio resource control RRC message sent by the network device to the terminal device, and / or the first indication information is included in downlink control information DCI sent by the network device to the terminal device.

[0024] With the above design, the network device can send the first indication information to the terminal device in a variety of ways.

[0025] In a second aspect, an embodiment of the present application provides a communication method, the method comprising: a network device determines a first transmission time and a second transmission time, receives a first reference signal in the first transmission time, and receives a first uplink signal in the second transmission time, wherein the first transmission time includes X1 time units, the second transmission time includes X2 time units, the first transmission time and the second transmission time have no overlap, X1 is a positive integer, X2 is a positive integer, and the first uplink signal includes at least one of PUSCH, PUCCH or DMRS.

[0026] The above design can realize the additional sending of the first reference signal by the terminal device, thereby improving the estimation performance of the network device for the uplink channel, thereby improving the coverage performance of the communication system.

[0027] In one possible design, the method also includes: the network device sends first indication information to the terminal device, wherein the first indication information indicates the ratio of the number of time units included in the first transmission time to the number of time units included in the second transmission time; or, the first indication information indicates the number of time units included in the first transmission time.

[0028] By adopting the above design, the network device can send the first indication information so that the terminal device can determine the first transmission time unit according to the first indication information.

[0029] In one possible design, in the first transmission time and the second transmission time, each consecutive N1+N2 time units includes consecutive N1 time units included in the first transmission time, and consecutive N2 time units included in the second transmission time, N1 is a positive integer less than or equal to X1, and N2 is a positive integer less than or equal to X2.

[0030] The above design can make the time units included in the first transmission time and the time units included in the second transmission time cross-distributed as much as possible. The network equipment can use the first reference signal between different time units to interpolate and estimate the channel occupied by the first uplink signal spaced between them, which is more suitable for situations where the terminal device moves faster and the channel changes faster.

[0031] In a possible design, N1 is the quotient of X1 divided by Z, N2 is the quotient of X2 divided by Z, and Z is the greatest common divisor of X1 and X2.

[0032] The above design can ensure that the first uplink signal and the first reference signal are arranged as evenly as possible, which is beneficial to improving the performance of channel interpolation estimation in a time-varying channel.

[0033] In a possible design, if the transmission mode of the terminal device is frequency hopping transmission between time units, when X1=X2, N1=N2=K, and K is a positive integer greater than 1 and less than or equal to X1.

[0034] The above design can avoid the situation where the frequency position of the first reference signal cannot include the frequency position of the first uplink signal, and can achieve the effect of improving the channel estimation accuracy.

[0035] In one possible design, the index of the start symbol of the first reference signal in the time domain symbol in the time unit included in the first transmission time is the same as the index of the start symbol of the first uplink signal in the time domain symbol in the time unit included in the second transmission time; and the index of the end symbol of the first reference signal in the time domain symbol in the time unit included in the first transmission time is the same as the index of the end symbol of the first uplink signal in the time domain symbol in the time unit included in the second transmission time.

[0036] With the above design, there is no need to additionally indicate the index of the start symbol and the index of the end symbol in the time domain symbols occupied by the first reference signal in the time unit included in the first transmission time, thereby saving signaling overhead.

[0037] In one possible design, the frequency domain resources occupied by the first reference signal are the same as the frequency domain resources occupied by the first uplink signal; or, the frequency domain resources occupied by the first reference signal include the frequency domain resources occupied by the first uplink signal and frequency domain resources of Y frequency domain units other than the frequency domain resources occupied by the first uplink signal, where Y is a positive integer.

[0038] The above method can ensure that the channel estimation result of the first reference signal can be used for demodulation of data carried in the first uplink signal of the same frequency.

[0039] In a third aspect, an embodiment of the present application provides a communication device, which may be a terminal device or a chip in a terminal device. The device may include a processing unit, a sending unit, and a receiving unit. It should be understood that the sending unit and the receiving unit here may also be a transceiver unit. When the device is a terminal device, the processing unit may be a processor, and the sending unit and the receiving unit may be a transceiver; the terminal device may also include a storage unit, and the storage unit may be a memory; the storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit so that the terminal device executes the method in the first aspect or any possible design of the first aspect. When the device is a chip in a terminal device, the processing unit may be a processor, and the sending unit and the receiving unit may be an input / output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit so that the chip executes the method in the first aspect or any possible design of the first aspect. The storage unit is used to store instructions, and the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the terminal device located outside the chip (for example, a read-only memory, a random access memory, etc.).

[0040] In a sixth aspect, an embodiment of the present application provides a communication device, which may be a network device or a chip in a network device. The device may include a processing unit, a sending unit, and a receiving unit. It should be understood that the sending unit and the receiving unit here may also be a transceiver unit. When the device is a network device, the processing unit may be a processor, and the sending unit and the receiving unit may be a transceiver; the network device may also include a storage unit, and the storage unit may be a memory; the storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit so that the network device executes the method in the second aspect or any possible design of the second aspect. When the device is a chip in a network device, the processing unit may be a processor, and the sending unit and the receiving unit may be an input / output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit so that the chip executes the method in the second aspect or any possible design of the second aspect. The storage unit is used to store instructions, and the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the network device located outside the chip (for example, a read-only memory, a random access memory, etc.).

[0041] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program runs on a computer, the computer executes the methods of the first to second aspects above.

[0042] In a fifth aspect, an embodiment of the present application further provides a computer program product comprising a program, which, when executed on a computer, enables the computer to execute the methods of the first to second aspects described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of transmission scheduled by DCI in this application;

[0044] Figure 2 One of the structural diagrams of the communication system in this application;

[0045] Figure 3 This is the second structural diagram of the communication system in this application;

[0046] Figure 4 A schematic diagram of frequency hopping transmission in this application;

[0047] Figure 5 It is a structural diagram of the communication method in this application;

[0048] Figure 6 One of the schematic diagrams of the positional relationship between the first transmission time and the second transmission time in the present application;

[0049] Figure 7 This is the second schematic diagram of the positional relationship between the first transmission time and the second transmission time in the present application;

[0050] Figure 8 This is a third schematic diagram of the positional relationship between the first transmission time and the second transmission time in the present application;

[0051] FIG9(a) and FIG9(b) are schematic diagrams of time units included in the first transmission time and time units included in the second transmission time in the present application;

[0052] Fig.10 One of the schematic diagrams of the time domain symbols occupied by the first reference signal in the time unit included in the first transmission time in the present application;

[0053] Fig.11 The second schematic diagram of the time domain symbols occupied by the first reference signal in the time unit included in the first transmission time in the present application;

[0054] Fig.12 One of the schematic diagrams of the frequency domain resources occupied by the first reference signal in this application;

[0055] Fig.13 This is a second schematic diagram of frequency domain resources occupied by the first reference signal in this application;

[0056] Fig.14 This is a schematic diagram of frequency hopping transmission of the first reference signal and the first uplink signal in the present application within a time unit;

[0057] Fig.15 This is one of the schematic diagrams of the first reference signal and the first uplink signal in the present application both performing frequency hopping transmission between time units;

[0058] Fig.16 This is a second schematic diagram of the first reference signal and the first uplink signal in the present application both performing frequency hopping transmission between time units;

[0059] Fig.17 The third schematic diagram of the first reference signal and the first uplink signal in the present application both perform frequency hopping transmission between time units;

[0060] Fig.18 One of the structural schematic diagrams of the device in this application;

[0061] Fig.19 This is the second structural diagram of the device in this application. DETAILED DESCRIPTION

[0062] The embodiments of the present application are described below in conjunction with the accompanying drawings.

[0063] This application is mainly applied to the fifth generation wireless communication system (new radio, NR) system, and can also be applied to other communication systems, such as long term evolution (long term evolution, LTE) system, advanced long term evolution (LTE-Advanced, LTE-A) system, narrow band-internet of things (narrow band-internet of things, NB-IoT) system, machine type communication (machine type communication, MTC) system, future next generation communication system, etc.

[0064] The network elements involved in the embodiments of the present application include terminal devices and network devices. Figure 2 As shown, the network device and the terminal device form a communication system, in which the network device sends information to the terminal device through a downlink channel, and the terminal device sends information to the network device through an uplink channel. Among them, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, an Internet of Things terminal device, etc., and can also be called a mobile station (mobile station), a mobile station (mobile), a remote station (remote station), a remote terminal (remote terminal), an access terminal (access terminal), a user agent (user agent), and can also be a car in vehicle-to-vehicle (V2V) communication, a machine in machine-type communication, etc., which are not limited here. The network device can be various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, evolved base stations (eNodeB), wireless fidelity access points (wireless fidelity access points, WiFi AP), worldwide interoperability for microwave access base stations (worldwide interoperability for microwave access base stations, WiMAX BS), etc., which are not limited here. In addition, in systems using different wireless access technologies, the names of network devices that provide wireless access functions may be different. For example, in the LTE system, it is called evolved NodeB (eNB or eNodeB), in the third generation (3G) system, it is called Node B, and in the NR system, it is called gNB.

[0065] As an optional communication system, such as Figure 3As shown, a base station and UE1 to UE6 form a communication system. In the communication system, UE1 to UE6 can send uplink data to the base station, and the base station can send downlink data to UE1 to UE6. In addition, UE4 to UE6 can also form a communication system. In the communication system, UE4 and UE6 can send uplink data to UE5, and UE5 can send downlink data to UE4 and UE6.

[0066] The above-mentioned network elements can be network elements implemented on dedicated hardware, software instances running on dedicated hardware, or instances of virtualized functions on appropriate platforms. In addition, the embodiments of the present application can also be applied to other future-oriented communication technologies. The network architecture and business scenarios described in this application are intended to more clearly illustrate the technical solutions of this application and do not constitute a limitation on the technical solutions provided in this application. It is known to those of ordinary skill in the art that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in this application are also applicable to similar technical problems.

[0067] In an embodiment of the present application, a time unit includes multiple time domain symbols. Exemplarily, the time unit may refer to a subframe, or may refer to a time slot, or may be a symbol group composed of multiple time domain symbols. Among them, in the LTE system, the uplink uses single-carrier frequency-division multiple access (SC-FDMA), which is also called discrete Fourier transform spread spectrum orthogonal frequency division multiplexing (DFT-spread-OFDM). Therefore, in the LTE system, the uplink time domain symbol refers to the SC-FDMA symbol. In the NR system, the uplink uses OFDM or DFT-spread-OFDM, so in the NR system, the uplink time domain symbol refers to an OFDM symbol or a DFT-spread-OFDM symbol. The first reference signal may also be called an extra reference signal (ERS), or may be a reference signal with other names, which is not limited in the present application.

[0068] In wireless communication systems, such as NR systems, the information exchanged between UE and gNB is carried through physical channels. Among them, the data sent by the UE, that is, uplink data, is usually carried by PUSCH; the control information sent by the UE, that is, uplink control information, is usually carried by the physical uplink control channel (physical uplink control channel, PUCCH). Among them, the DMRS used for uplink channel estimation is always sent together with PUSCH or PUCCH.

[0069] Taking the example of a network device scheduling a UE to transmit PUSCH by sending DCI, from the time domain, the network device can schedule the UE to transmit PUSCH in one time slot, or schedule the UE to transmit PUSCH in multiple consecutive time slots. In one time slot, the network device can schedule the UE to use all OFDM symbols to transmit uplink signals, or schedule the UE to use some of the OFDM symbols to transmit uplink signals. Assuming that all OFDM symbols in the entire time slot are used to transmit PUSCH and DMRS, the ratio of the number of OFDM symbols occupied by PUSCH to the number of OFDM symbols occupied by DMRS is "13:1" to "10:4". Therefore, the adjustment range of the number of OFDM symbols occupied by DMRS is limited. The gNB cannot increase the number of reference signals sent by the UE and improve the channel estimation performance according to the actual uplink channel estimation requirements.

[0070] In addition, NR supports frequency hopping transmission. Taking PUSCH as an example, during a PUSCH transmission, PUSCH is transmitted on different frequency domain resources at different times. In NR, frequency hopping transmission is divided into intra-slot hopping and inter-slot hopping, as shown below: Figure 4 As shown. During the frequency hopping transmission process, since PUSCH uses different frequency domain resources during the transmission process, frequency domain resource diversity gain can be obtained, which can resist the influence of deep fading of the wireless channel on some frequency domain resources to a certain extent. The time domain symbols of the PUSCH transmitted in each slot in intra-slot frequency hopping are divided into two parts, each part uses different frequency domain resources for transmission, the first part of each time slot corresponds to the same frequency domain resources, and the second part of each time slot corresponds to the same frequency domain resources. In inter-slot frequency hopping, the frequency domain resources corresponding to odd-numbered time slots are the same, and the frequency domain resources corresponding to even-numbered time slots are the same. In the current NR, NR does not support the simultaneous use of intra-slot frequency hopping and inter-slot frequency hopping.

[0071] Based on this, the embodiment of the present application provides a communication method to improve the estimation performance of the uplink channel, such as Figure 5 As shown, the method includes:

[0072] Step 500: The terminal device determines a first transmission time and a second transmission time, the first transmission time includes X1 time units, the second transmission time includes X2 time units, the first transmission time and the second transmission time do not overlap, X1 is a positive integer, and X2 is a positive integer.

[0073] Step 510: The terminal device sends a first reference signal in a first transmission time and sends a first uplink signal in a second transmission time, where the first uplink signal includes at least one of PUSCH, PUCCH or DMRS.

[0074] In one example, before the terminal device determines the first transmission time and the second transmission time, the network device can configure the terminal device to send the first reference signal through high-level signaling, for example, the network device configures the terminal device to send the first reference signal through RRC signaling. When the network device schedules the terminal device to send the first uplink signal through DCI, the terminal device determines the first transmission time and the second transmission time, and sends the first reference signal in the first transmission time, and sends the first uplink signal in the second transmission time. Therefore, the network device can flexibly configure whether to send the first reference signal according to the uplink channel estimation requirements.

[0075] In another example, before the terminal device determines the first transmission time and the second transmission time, the network device can configure the terminal device to send the first reference signal through high-level signaling, and when scheduling the terminal device to send the first uplink signal through DCI, a field in the DCI is used to indicate whether the terminal device sends the first reference signal. If the field indicates that the terminal device sends the first reference signal, the terminal device determines the first transmission time and the second transmission time, and sends the first reference signal in the first transmission time, and sends the first uplink signal in the second transmission time. Through this method, the network device can not only flexibly configure the first reference signal according to the uplink channel estimation requirements, but also more flexibly and dynamically indicate the sending of the first reference signal through DCI.

[0076] In one possible design, the terminal device may determine the first transmission time based on the first indication information. The first indication information may be configured by the network device through high-level signaling, or may be predefined by the protocol, that is, it does not require configuration, notification or indication by the network device. The first indication information indicates the number of time units included in the first transmission time, or the first indication information indicates the ratio of the number of time units included in the first transmission time to the number of time units included in the second transmission time. Exemplarily, the first indication information indicates the ratio of the number of time units included in the first transmission time to the number of time units included in the second transmission time, that is, X1:X2. Alternatively, the first indication information indicates the ratio of the number of time units included in the first transmission time to the number of time units included in the third transmission time, that is, X1:(X1+X2). Alternatively, the first indication information indicates the ratio of the number of time units included in the second transmission time to the number of time units included in the third transmission time, that is, X2:(X1+X2).

[0077] For example, taking the number of time slots where the PUSCH is located as an example, the number of time slots where the first reference signal is located is N r The number of timeslots where PUSCH is located is N p Ratio r = N r / N p=1 / 2, at this time, if the number of timeslots where PUSCH is located is N p =4, then the number of time slots where the first reference signal is located is N r =N p ·r=2. In particular, for N p When r is not an integer, you can predetermine whether to round up or down the product. For example, if r = 1 / 2, N p =7, then

[0078] In addition, the first indication information may also include ratio information of the number of time units included in the multiple first transmission times to the number of time units included in the second transmission time, or the number of time units included in the multiple first transmission times. When the network device schedules the transmission of the first uplink signal through DCI, a field in the DCI may be used to instruct the terminal device to use one of the multiple ratio information or one of the number of time units included in the multiple first transmission times. For example, the base station may configure 4 different time slot numbers N where the first reference signal is located. r The number of timeslots where PUSCH is located is N p Ratio r = {2, 1, 1 / 2, 1 / 4}, the four ratios correspond to the states "00", "01", "10", and "11" of a 2-bit field in DCI; when the network device schedules the terminal device to transmit PUSCH through DCI, the network device can instruct the UE to use one of the ratios through the specific value of the 2-bit field. The above design can increase the flexibility of the number of time units included in the first transmission time.

[0079] Further, the terminal device may determine the first transmission time according to the first indication information, in the following ways but not limited to:

[0080] Method 1: The terminal device determines the first transmission time according to the first indication information and the second transmission time.

[0081] In one example, the terminal device determines the first transmission time based on the ratio information of the number of time units included in the first transmission time and the number of time units included in the second transmission time indicated by the first indication information, and the second transmission time. Specifically, the network device may send a DCI to the terminal device, which indicates the number of time units included in the second transmission time and the position of the second transmission time. The position of the second transmission time may also be understood as the position of the time units included in the second transmission time, such as the start time of the time units included in the second transmission time. The terminal device may determine the number of time units included in the first transmission time based on the ratio information of the number of time units included in the first transmission time and the number of time units included in the second transmission time indicated by the first indication information, and the number of time units included in the second transmission time. Further, the terminal device may determine the positional relationship between the first transmission time and the second transmission time based on the positional relationship between the first transmission time and the second transmission time indicated by the second indication information and the position of the second transmission time. For example, the time units included in the first transmission time are all located before the time units included in the second transmission time (such as Figure 6 ), or the time units included in the first transmission time are all located after the time units included in the second transmission time (as shown in Figure 7 Alternatively, the time units included in the first transmission time are arranged alternately with the time units included in the second transmission time (as shown in Figure 8 shown).

[0082] In another example, the terminal device determines the first transmission time according to the number of time units included in the first transmission time indicated by the first indication information and the second transmission time. Specifically, the network device sends a DCI message to the terminal device, and the DCI message indicates the number of time units included in the second transmission time and the position of the second transmission time. The terminal device determines the positional relationship between the first transmission time and the second transmission time according to the positional relationship between the first transmission time and the second transmission time indicated by the second indication information, such as Figure 6 , Figure 7 , Figure 8 shown.

[0083] Mode 2: The terminal device determines the first transmission time according to the first indication information and the third transmission time, wherein the third transmission time is a transmission time composed of the first transmission time and the second transmission time.

[0084] In one example, the terminal device determines the first transmission time based on the ratio information of the number of time units included in the first transmission time to the number of time units included in the second transmission time indicated by the first indication information, and the third transmission time. Specifically, the network device may send a DCI to the terminal device, which DCI indicates the number of time units included in the third transmission time and the position of the third transmission time. The position of the third transmission time may also be understood as the position of the time units included in the third transmission time, such as the start time of the time units included in the third transmission time. The terminal device may determine the number of time units included in the first transmission time based on the ratio information of the number of time units included in the first transmission time to the number of time units included in the second transmission time indicated by the first indication information, and the number of time units included in the third transmission time. Further, the terminal device may determine the positional relationship between the first transmission time and the second transmission time based on the positional relationship between the first transmission time and the second transmission time indicated by the second indication information and the position of the third transmission time, such as Figure 6 , Figure 7 , Figure 8 shown.

[0085] In another example, the terminal device determines the first transmission time according to the number of time units included in the first transmission time indicated by the first indication information and the third transmission time. Specifically, the network device sends a DCI message to the terminal device, and the DCI message indicates the number of time units included in the third transmission time and the position of the third transmission time. The terminal device can determine the positional relationship between the first transmission time and the second transmission time according to the positional relationship between the first transmission time and the second transmission time indicated by the second indication information and the position of the third transmission time, such as Figure 6 , Figure 7 , Figure 8 shown.

[0086] It should be understood that the second indication information indicates the positional relationship between the first transmission time and the second transmission time, and the second indication information may be configured by the network device through high-level signaling, or may be predefined by the protocol, i.e., it does not require the network device to indicate. If the second indication information is configured by the network device through high-level signaling, the second indication information may be a separate indication information, or may be the same message as the first indication information.

[0087] Based on the above two methods, in the first transmission time and the second transmission time, each continuous N1+N2 time unit includes the time unit included in the continuous N1 first transmission time, and the time unit included in the continuous N2 second transmission time, N1 is a positive integer less than or equal to X1, and N2 is a positive integer less than or equal to X2. Exemplarily, when N1=X1, N2=X2, the position relationship between the first transmission time and the second transmission time can be as follows: Figure 6or Figure 7 As shown, when the first transmission time is before the second transmission time, that is, the terminal device first sends the first reference signal and then sends the first uplink signal, such as Figure 6 As shown, this method is conducive to realizing that the network device combines the energy of the first reference signals in the adjacent time units and then estimates the channel, thereby obtaining a better estimation accuracy. Therefore, the network device can first estimate the channel through the first reference signal, and use the channel estimation result to equalize and demodulate the subsequent first uplink signal, which is particularly suitable for the case where the terminal device moves slowly and the channel changes slowly. Figure 7 As shown, when the first transmission time is after the second transmission time, that is, the terminal device first sends the first uplink signal and then sends the first reference signal, the network device needs to first receive and store the first uplink signal sent first, and then use the first reference signal received later to perform channel estimation and then equalize and demodulate the stored first uplink signal.

[0088] When N1≠X1 or N2≠X2, the positional relationship between the first transmission time and the second transmission time can be as follows: Figure 8 As shown. Figure 8 As shown, the number of time slots where the first reference signal is located is N r The number of timeslots where PUSCH is located is N p Ratio r = N r / N p =1 / 2, the terminal device can insert a time slot where the first reference signal is located every two time slots where the first uplink signal is located (that is, the time slot where the PUSCH is located) during the first transmission time and the second transmission time. For another example, the number of time slots where the first reference signal is located is N. r The number of timeslots where PUSCH is located is N p Ratio r = N r / N p =1 / 2<1, for example, at this time every N p / N r Insert one time slot where the first reference signal is located into the time slot where the PUSCH is located; if r=>1, insert ... p / N r The time slot where the first reference signal is located is inserted into the time slot where the PUSCH is located.

[0089] It should be understood that Figure 8Taking the example of sending PUSCH first, it is also possible to send the first reference signal first. It is only necessary to predefine the order of the two, or the order can be indicated through high-level signaling. The above design can make the time units included in the first transmission time and the time units included in the second transmission time cross-distributed as much as possible. The network equipment can use the first reference signal between different time units to interpolate and estimate the channel occupied by the first uplink signal spaced therebetween, which is more suitable for situations where the terminal device moves faster and the channel changes faster. In one possible design, N1 is the quotient of X1 divided by Z, N2 is the quotient of X2 divided by Z, and Z is the greatest common divisor of X1 and X2. In this way, the first uplink signal and the first reference signal can be spaced as evenly as possible, which is beneficial to improving the performance of channel interpolation estimation in time-varying channels.

[0090] In one possible scenario, considering that some time units may not be used for uplink transmission, for example, some time units may be downlink time units, or reserved time units, therefore, the time units included in the first transmission time and the time units included in the second transmission time referred to in the embodiment of the present application are both time units that can be used for uplink transmission by the terminal device. As shown in Figure 9(a), all time slots in the upper half of Figure 9(a) are time slots that can send the first reference signal and PUSCH, while there are only two time slots in the lower half of Figure 9(a) that can send the first reference signal and PUSCH, and the time slots with a cross are time slots that cannot be used for uplink transmission. Therefore, the first reference signal and PUSCH are only sent on available uplink time slots.

[0091] In another possible situation, the terminal device does not consider whether the time unit is available first, and then Figure 5 The method shown determines a first transmission time and a second transmission time, and then further sends a first reference signal only in an available time unit included in the first transmission time and sends a first uplink signal in an available time unit included in the second transmission time according to whether the time unit included in the first transmission time is available and whether the time unit included in the second transmission time is available. Whether the time unit is available here refers to whether the time unit is a time unit that can be used for uplink transmission by a terminal device.

[0092] As shown in Figure 9(b), the terminal device does not first consider whether the time slot is available, that is, it does not specifically determine which time slots are time slots that can be used for uplink transmission by the terminal device. The terminal device determines that the number of time slots where the first reference signal is located is 1, the number of time slots where the PUSCH is located is 3, and determines that the time slot where one first reference signal is located is located before the time slots where the three PUSCHs are located, and then further determines whether each time slot unit in these four time slots is available. In the upper part of Figure 9(b), the terminal device determines that the four time slots in the figure are four consecutive time slots that can be used for uplink transmission by the terminal device, then the number of time slots where the first reference signal is actually located is 1, the number of time slots where the PUSCH is actually located is 3, and the time slot where one first reference signal is located is located before the time slots where the three PUSCHs are located. In the lower part of Figure 9(b), the terminal device determines that the first time slot in the figure is a time slot that can be used for uplink transmission by the terminal device, then this time slot is the time slot where the first reference signal is located. If the terminal device determines that the second time slot in the figure is a time slot that cannot be used for uplink transmission by the terminal device, then it continues to determine whether the third time slot in the figure is a time slot that can be used for uplink transmission by the terminal device. If the terminal device determines that the third time unit in the figure is a time slot that cannot be used for uplink transmission by the terminal device, then it continues to determine whether the fourth time slot in the figure is a time slot that can be used for uplink transmission by the terminal device. If the terminal device determines that the fourth time slot in the figure is a time slot that can be used for uplink transmission by the terminal device, then this time slot is the time slot where the PUSCH is located. At this time, the number of time slots where the first reference signal is actually located is 1, the number of time slots where the PUSCH is actually located is 1, and the time slot where one first reference signal is located is located before the time slot where one PUSCH is located.

[0093] In addition, in addition to determining the number of time units included in the first transmission time and the positional relationship between the first transmission time and the second transmission time, the terminal device also needs to determine the time domain symbols occupied by the first reference signal in the time units included in the first transmission time, and the frequency domain resources occupied by the first reference signal.

[0094] In one possible design, the terminal device determines the time domain symbols occupied by the first reference signal in the time unit included in the first transmission time according to the third indication information. For example, a feasible method is that the third indication information indicates the index of the starting symbol and the index of the ending symbol in the time domain symbols occupied by the first reference signal in the time unit included in the first transmission time. For another example, another feasible method is that the third indication information indicates the index of the starting symbol and the number of symbols occupied in the time domain symbols occupied by the first reference signal in the time unit included in the first transmission time. The third indication information may be configured by the network device through high-level signaling, such as Fig.10As shown, it may also be predefined by the protocol. If the third indication information is configured by the network device through high-level signaling, the third indication information may be a separate indication information, or it may be the same message as the first indication information. With the above design, no matter how many time domain symbols in a time unit the network device schedules the terminal device to transmit the first uplink signal, the time domain symbols occupied by the first reference signal in the time unit included in the first transmission time will not change accordingly, and therefore, the performance of the network device performing channel estimation through the first reference signal can be relatively stable.

[0095] In another possible design, the index of the start symbol in the time domain symbol occupied by the first reference signal in the time unit included in the first transmission time is the same as the index of the start symbol in the time domain symbol occupied by the first uplink signal in the time unit included in the second transmission time; and, the index of the end symbol in the time domain symbol occupied by the first reference signal in the time unit included in the first transmission time is the same as the index of the end symbol in the time domain symbol occupied by the first uplink signal in the time unit included in the second transmission time. The range of time domain symbols occupied by the first uplink signal can be flexibly indicated. It should be understood that the above design can be configured by the network device through high-level signaling, or it can be predefined by the protocol, that is, it does not require the network device to indicate. If the content of the above design is configured by the network device through high-level signaling, the content of the above design can be indicated by a separate indication information, and can also be the same message as the first indication information. Exemplarily, the OFDM symbol occupied by the first reference signal in a time slot is the same as the OFDM symbol occupied by the PUSCH in a time slot, such as Fig.11 With the above design, not only is it unnecessary to additionally indicate the index of the start symbol and the index of the end symbol in the time domain symbol occupied by the first reference signal in the time unit included in the first transmission time, thereby saving signaling overhead, but also improving the flexibility of indication.

[0096] In one possible design, the frequency domain resources occupied by the first reference signal are the same as the frequency domain resources occupied by the first uplink signal. Fig.12 As shown, the frequency domain resources occupied by the first reference signal are exactly the same as the frequency domain resources occupied by the PUSCH. The above can ensure that the channel estimation result of the first reference signal can be used for demodulation of data carried in the first uplink signal of the same frequency.

[0097] In another possible design, the frequency domain resources occupied by the first reference signal include the frequency domain resources occupied by the first uplink signal and the frequency domain resources of Y frequency domain units other than the frequency domain resources occupied by the first uplink signal, where Y is a positive integer. Exemplarily, the frequency domain unit may be a resource block (RB), a resource block group (RBG), a resource element (RE), etc. Taking the frequency domain unit as an RB as an example, Fig.13 As shown, the frequency domain resources occupied by the first reference signal include not only the frequency domain resources occupied by the PUSCH, but also ±X resource blocks immediately adjacent to the frequency domain resources occupied by the PUSCH, where X is a positive integer. With the above design, for certain channel estimation algorithms, the network device can use the reference signal adjacent to the target frequency domain resource to increase the estimation accuracy of the channel of the target frequency domain resource.

[0098] It should be understood that the method provided in the embodiment of the present application is not only applicable to the scenario where the network device transmits through DCI scheduling, but can also be applied to the scenario of configuring authorized transmission, and the repeated parts will not be repeated.

[0099] In summary, by adopting the method provided in the embodiment of the present application, the terminal device sends a first reference signal in a first transmission time and sends a first uplink signal in a second transmission time, and there is no overlap between the first transmission time and the second transmission time, which can improve the estimation performance of the network device for the uplink channel, thereby improving the coverage performance of the communication system.

[0100] Based on the same idea, the method provided in the embodiment of the present application can also be applied to frequency hopping transmission. There are two ways of frequency hopping transmission, one is frequency hopping within a time unit, and the other is frequency hopping between time units.

[0101] In one possible design, the first reference signal and the first uplink signal have the same frequency hopping mode.

[0102] In a possible design, the first reference signal and the first uplink signal are both transmitted by frequency hopping within a time unit. Exemplarily, the first reference signal and the PUSCH are both transmitted by frequency hopping within a time slot in their respective time slots. The PUSCH and the first reference signal may be sent at intervals, or both may be sent separately and in batches, such as Fig.14 shown.

[0103] In a possible design, the first reference signal and the first uplink signal are both transmitted by frequency hopping between time units. Exemplarily, the first reference signal and the PUSCH are both transmitted by frequency hopping between time slots. The PUSCH and the first reference signal are transmitted by frequency hopping in a third transmission time consisting of the first transmission time and the second transmission time. The two may be sent at intervals, or they may be sent separately and in batches, such as Fig.15 shown.

[0104] In one possible design, the first reference signal and the first uplink signal are frequency-hopping transmitted in a third transmission time composed of the first transmission time and the second transmission time. If the number of time units included in the first transmission time is equal to the number of time units included in the second transmission time, that is, when X1=X2, N1=N2=K, and K is a positive integer greater than 1 and less than or equal to X1.

[0105] Specifically, the time units included in the first transmission time are all located before the time units included in the second transmission time; or the time units included in the first transmission time are all located after the time units included in the second transmission time; or each 2*K time units include K consecutive time units included in the first transmission time and K time units included in the second transmission time.

[0106] Exemplarily, when the number of time slots where the first reference signal is located is N r The number of timeslots where PUSCH is located is N p When the ratio r=1, the first reference signal and PUSCH are both transmitted by frequency hopping between time slots. The PUSCH and the first reference signal can be transmitted in N r +N p The two can be sent in a centralized manner or at intervals of 2*Y time slots, where each 2*Y time slot includes Y time slots where the first reference signal is located and Y time slots where the PUSCH is located, and Y is a positive integer greater than or equal to 2. Fig.16 shown.

[0107] If every two time units include one time unit included in the first transmission time and one time unit included in the second transmission time, and the number of time units included in the first transmission time is equal to the number of time units included in the second transmission time, it may happen that the frequency position of the first reference signal cannot include the frequency position of the first uplink signal, such as Fig.17 As shown, the channel estimation accuracy cannot be improved. The above design can avoid the above situation and improve the channel estimation accuracy.

[0108] In the embodiments provided by the present application above, each scheme of the communication method provided by the embodiments of the present application is introduced from the perspective of each network element itself and from the perspective of the interaction between each network element. It can be understood that each network element, such as a network device and a terminal device, includes a hardware structure and / or software module corresponding to each function in order to implement the above functions. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0109] Same as above idea, Fig.18 As shown, an embodiment of the present application further provides a device 1800 , which includes a transceiver unit 1802 and a processing unit 1801 .

[0110] In one example, the device 1800 is used to implement the functions of the terminal device in the above method. The device can be a terminal device or a device in the terminal device.

[0111] The processing unit 1801 is configured to determine a first transmission time and a second transmission time, wherein the first transmission time includes X1 time units, the second transmission time includes X2 time units, the first transmission time and the second transmission time do not overlap, X1 is a positive integer, and X2 is a positive integer;

[0112] The transceiver unit 1802 is configured to send a first reference signal in the first transmission time and send a first uplink signal in the second transmission time, wherein the first uplink signal includes at least one of PUSCH, PUCCH or DMRS.

[0113] In one example, the device 1800 is used to implement the function of the network device in the above method. The device can be a network device or a device in a network device.

[0114] The processing unit 1801 is configured to determine a first transmission time and a second transmission time, wherein the first transmission time includes X1 time units, the second transmission time includes X2 time units, the first transmission time and the second transmission time do not overlap, X1 is a positive integer, and X2 is a positive integer;

[0115] The transceiver unit 1802 is configured to receive a first reference signal in the first transmission time and receive a first uplink signal in the second transmission time, wherein the first uplink signal includes at least one of a PUSCH, a PUCCH or a DMRS.

[0116] For the specific execution process of the processing unit 1801 and the transceiver unit 1802, please refer to the records in the above method embodiment. The division of modules in the embodiment of the present application is schematic, which is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application can be integrated into a processor, or it can exist physically separately, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules.

[0117] As another optional variation, the device may be a chip system. In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices. Exemplarily, the device includes a processor and an interface, and the interface may be an input / output interface. The processor performs the functions of the above-mentioned processing unit 1801, and the interface performs the functions of the above-mentioned transceiver unit 1802. The device may also include a memory, which is used to store a program that can be run on the processor, and when the processor executes the program, the above-mentioned Figure 3 The method of the illustrated embodiment.

[0118] Same as above idea, Fig.19 As shown, an embodiment of the present application further provides a device 1900. The device 1900 includes: a communication interface 1901, at least one processor 1902, and at least one memory 1903. The communication interface 1901 is used to communicate with other devices through a transmission medium, so that the device in the device 1900 can communicate with other devices. The memory 1903 is used to store computer programs. The processor 1902 calls the computer program stored in the memory 1903, and sends and receives data through the communication interface 1901 to implement the method in the above embodiment.

[0119] Exemplarily, when the apparatus is a network device, the memory 1903 is used to store a computer program; the processor 1902 calls the computer program stored in the memory 1903, and executes the method executed by the network device in the above embodiment through the communication interface 1901. When the apparatus is a terminal device, the memory 1903 is used to store a computer program; the processor 1902 calls the computer program stored in the memory 1903, and executes the method executed by the terminal device in the above embodiment through the communication interface 1901.

[0120] In the embodiment of the present application, the communication interface 1901 may be a transceiver, a circuit, a bus, a module or other types of communication interfaces. The processor 1902 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and may implement or execute the methods, steps and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The memory 1903 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random access memory (RAM). The memory is any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto. The memory in the embodiment of the present application may also be a circuit or any other device that can implement a storage function. The memory 1903 is coupled to the processor 1902. The coupling in the embodiment of the present application is an interval coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. As another implementation, the memory 1903 can also be located outside the device 1900. The processor 1902 can operate in conjunction with the memory 1903. The processor 1902 can execute program instructions stored in the memory 1903. At least one of the at least one memory 1903 may also be included in the processor 1902. The connection medium between the above-mentioned communication interface 1901, the processor 1902 and the memory 1903 is not limited in the embodiment of the present application. For example, in the embodiment of the present application, Fig.19 The memory 1903, the processor 1902 and the communication interface 1901 may be connected via a bus, which may be divided into an address bus, a data bus, a control bus and the like.

[0121] Understandably, the above Fig.18 The device in the embodiment shown can be Fig.19 Specifically, the processing unit 1801 may be implemented by a processor 1902 , and the transceiver unit 1802 may be implemented by a communication interface 1901 .

[0122] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program runs on a computer, the computer executes the methods shown in the above embodiments.

[0123] In the method provided in the embodiment of the present application, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or a data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk SSD), etc.

[0124] As described above, the above embodiments are only used to introduce the technical solution of the present application in detail, but the description of the above embodiments is only used to help understand the method of the embodiments of the present invention and should not be understood as limiting the embodiments of the present invention. Changes or substitutions that can be easily thought of by technicians in this technical field should be included in the protection scope of the embodiments of the present invention.

Claims

1. A communication method, characterized in that: The method includes: The terminal device determines a first transmission time and a second transmission time, where the first transmission time includes X1 time units, the second transmission time includes X2 time units, the first transmission time and the second transmission time do not overlap, X1 is a positive integer, and X2 is a positive integer; The terminal device sends a first reference signal in the first transmission time and sends a first uplink signal in the second transmission time, the first uplink signal including at least one of a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH or a demodulation reference signal DMRS; wherein, in the first transmission time and the second transmission time, each consecutive N1+N2 time units includes consecutive N1 time units included in the first transmission time, and consecutive N2 time units included in the second transmission time, N1 is a positive integer less than or equal to X1, N2 is a positive integer less than or equal to X2, N1 is the quotient of X1 divided by Z, N2 is the quotient of X2 divided by Z, and Z is the greatest common divisor of X1 and X2.

2. The method according to claim 1, characterized in that The terminal device determines the first transmission time, including: The terminal device determines the first transmission time according to the first indication information; The first indication information indicates the ratio information of the number of time units included in the first transmission time to the number of time units included in the second transmission time; or, the first indication information indicates the number of time units included in the first transmission time.

3. The method according to claim 2, characterized in that The terminal device determines a first transmission time, including: The terminal device determines the first transmission time according to the ratio information of the number of time units included in the first transmission time and the number of time units included in the second transmission time indicated by the first indication information, and the second transmission time; or, The terminal device determines the first transmission time according to the number of time units included in the first transmission time indicated by the first indication information and the second transmission time.

4. The method according to claim 2, characterized in that The terminal device determines a first transmission time, including: The terminal device determines the first transmission time according to the ratio information of the number of time units included in the first transmission time and the number of time units included in the second transmission time indicated by the first indication information, and the third transmission time; or, The terminal device determines the first transmission time according to the number of time units included in the first transmission time indicated by the first indication information and the third transmission time; The third transmission time is composed of the first transmission time and the second transmission time.

5. The method according to claim 1, characterized in that If the transmission mode of the terminal device is frequency hopping transmission between time units, when X1=X2, N1=N2=K, and K is a positive integer greater than 1 and less than or equal to X1.

6. The method according to any one of claims 1 to 5, characterized in that The index of the starting symbol of the first reference signal in the time domain symbols in the time unit included in the first transmission time is the same as the index of the starting symbol of the first uplink signal in the time domain symbols in the time unit included in the second transmission time; and The index of the end symbol of the first reference signal in the time domain symbols in the time unit included in the first transmission time is the same as the index of the end symbol of the first uplink signal in the time domain symbols in the time unit included in the second transmission time.

7. The method according to any one of claims 1 to 5, characterized in that The frequency domain resources occupied by the first reference signal are the same as the frequency domain resources occupied by the first uplink signal; or, The frequency domain resources occupied by the first reference signal include the frequency domain resources occupied by the first uplink signal and frequency domain resources of Y frequency domain units other than the frequency domain resources occupied by the first uplink signal, where Y is a positive integer.

8. The method according to any one of claims 2 to 5, characterized in that The first indication information is included in a radio resource control RRC message sent by a network device to the terminal device, and / or the first indication information is included in downlink control information DCI sent by a network device to the terminal device.

9. A communication method, characterized in that: The method includes: The network device determines a first transmission time and a second transmission time, wherein the first transmission time includes X1 time units, the second transmission time includes X2 time units, the first transmission time and the second transmission time do not overlap, X1 is a positive integer, and X2 is a positive integer; The network device receives a first reference signal in the first transmission time, and receives a first uplink signal in the second transmission time, the first uplink signal including at least one of PUSCH, PUCCH or DMRS; wherein, in the first transmission time and the second transmission time, each consecutive N1+N2 time units includes consecutive N1 time units included in the first transmission time, and consecutive N2 time units included in the second transmission time, N1 is a positive integer less than or equal to X1, N2 is a positive integer less than or equal to X2, N1 is the quotient of X1 divided by Z, N2 is the quotient of X2 divided by Z, and Z is the greatest common divisor of X1 and X2.

10. The method according to claim 9, characterized in that Also includes: The network device sends first indication information to the terminal device, wherein the first indication information indicates the ratio information of the number of time units included in the first transmission time to the number of time units included in the second transmission time; or, the first indication information indicates the number of time units included in the first transmission time.

11. The method according to claim 9, characterized in that If the transmission mode of the terminal device is frequency hopping transmission between time units, when X1=X2, N1=N2=K, where K is a positive integer greater than 1 and less than or equal to X1.

12. The method according to any one of claims 9 to 11, characterized in that The index of the starting symbol of the first reference signal in the time domain symbols in the time unit included in the first transmission time is the same as the index of the starting symbol of the first uplink signal in the time domain symbols in the time unit included in the second transmission time; and The index of the end symbol of the first reference signal in the time domain symbols in the time unit included in the first transmission time is the same as the index of the end symbol of the first uplink signal in the time domain symbols in the time unit included in the second transmission time.

13. The method according to any one of claims 9 to 11, characterized in that The frequency domain resources occupied by the first reference signal are the same as the frequency domain resources occupied by the first uplink signal; or, The frequency domain resources occupied by the first reference signal include the frequency domain resources occupied by the first uplink signal and frequency domain resources of Y frequency domain units other than the frequency domain resources occupied by the first uplink signal, where Y is a positive integer.

14. A communication device, characterized in that: The device is a terminal device or a module in a terminal device, and the device includes: a processing unit, configured to determine a first transmission time and a second transmission time, wherein the first transmission time includes X1 time units, the second transmission time includes X2 time units, the first transmission time and the second transmission time do not overlap, X1 is a positive integer, and X2 is a positive integer; A transceiver unit, used to send a first reference signal in the first transmission time, and to send a first uplink signal in the second transmission time, the first uplink signal including at least one of PUSCH, PUCCH or DMRS; wherein, in the first transmission time and the second transmission time, each consecutive N1+N2 time units includes consecutive N1 time units included in the first transmission time, and consecutive N2 time units included in the second transmission time, N1 is a positive integer less than or equal to X1, N2 is a positive integer less than or equal to X2, N1 is the quotient of X1 divided by Z, N2 is the quotient of X2 divided by Z, and Z is the greatest common divisor of X1 and X2.

15. The device according to claim 14, characterized in that The processing unit is used to: determine the first transmission time according to the first indication information; The first indication information indicates the ratio information of the number of time units included in the first transmission time to the number of time units included in the second transmission time; or, the first indication information indicates the number of time units included in the first transmission time.

16. The device according to claim 15, characterized in that the processing unit is configured to: determine the first transmission time according to the ratio information of the number of time units included in the first transmission time and the number of time units included in the second transmission time indicated by the first indication information, and the second transmission time; or The first transmission time is determined according to the number of time units included in the first transmission time indicated by the first indication information and the second transmission time.

17. The device according to claim 15, characterized in that the processing unit is configured to: determine the first transmission time according to the ratio information of the number of time units included in the first transmission time and the number of time units included in the second transmission time indicated by the first indication information, and the third transmission time; or Determine the first transmission time according to the number of time units included in the first transmission time indicated by the first indication information and the third transmission time; The third transmission time is composed of the first transmission time and the second transmission time.

18. The device according to claim 14, characterized in that If the transmission mode of the device is frequency hopping transmission between time units, when X1=X2, N1=N2=K, and K is a positive integer greater than 1 and less than or equal to X1.

19. The device according to any one of claims 14 to 18, characterized in that The index of the starting symbol of the first reference signal in the time domain symbols in the time unit included in the first transmission time is the same as the index of the starting symbol of the first uplink signal in the time domain symbols in the time unit included in the second transmission time; and The index of the end symbol of the first reference signal in the time domain symbols in the time unit included in the first transmission time is the same as the index of the end symbol of the first uplink signal in the time domain symbols in the time unit included in the second transmission time.

20. The device according to any one of claims 14 to 18, characterized in that The frequency domain resources occupied by the first reference signal are the same as the frequency domain resources occupied by the first uplink signal; or, The frequency domain resources occupied by the first reference signal include the frequency domain resources occupied by the first uplink signal and frequency domain resources of Y frequency domain units other than the frequency domain resources occupied by the first uplink signal, where Y is a positive integer.

21. The device according to any one of claims 15 to 18, characterized in that The first indication information is included in a radio resource control RRC message sent by a network device to the terminal device, and / or the first indication information is included in downlink control information DCI sent by a network device to the terminal device.

22. A communication device, characterized in that: The device includes: a processing unit, configured to determine a first transmission time and a second transmission time, wherein the first transmission time includes X1 time units, the second transmission time includes X2 time units, the first transmission time and the second transmission time do not overlap, X1 is a positive integer, and X2 is a positive integer; A transceiver unit, used for receiving a first reference signal in the first transmission time, and receiving a first uplink signal in the second transmission time, the first uplink signal including at least one of PUSCH, PUCCH or DMRS; wherein, in the first transmission time and the second transmission time, each consecutive N1+N2 time units includes consecutive N1 time units included in the first transmission time, and consecutive N2 time units included in the second transmission time, N1 is a positive integer less than or equal to X1, N2 is a positive integer less than or equal to X2, N1 is the quotient of X1 divided by Z, N2 is the quotient of X2 divided by Z, and Z is the greatest common divisor of X1 and X2.

23. The device according to claim 22, characterized in that The transceiver unit is also used to: send first indication information to the terminal device, wherein the first indication information indicates the ratio of the number of time units included in the first transmission time to the number of time units included in the second transmission time; or, the first indication information indicates the number of time units included in the first transmission time.

24. The device according to claim 22, characterized in that If the transmission mode of the terminal device is frequency hopping transmission between time units, when X1=X2, N1=N2=K, where K is a positive integer greater than 1 and less than or equal to X1.

25. The device according to any one of claims 22 to 24, characterized in that The index of the starting symbol of the first reference signal in the time domain symbols in the time unit included in the first transmission time is the same as the index of the starting symbol of the first uplink signal in the time domain symbols in the time unit included in the second transmission time; and The index of the end symbol of the first reference signal in the time domain symbols in the time unit included in the first transmission time is the same as the index of the end symbol of the first uplink signal in the time domain symbols in the time unit included in the second transmission time.

26. The device according to any one of claims 22 to 24, characterized in that The frequency domain resources occupied by the first reference signal are the same as the frequency domain resources occupied by the first uplink signal; or, The frequency domain resources occupied by the first reference signal include the frequency domain resources occupied by the first uplink signal and frequency domain resources of Y frequency domain units other than the frequency domain resources occupied by the first uplink signal, where Y is a positive integer.

27. A computer storage medium, characterized in that The computer storage medium stores computer executable instructions, and when the computer executable instructions are called by a computer, the computer is used to enable the computer to execute any one of the methods of claims 1 to 13.

Images