WO2022237694A1

WO2022237694A1 - Communication method and apparatus

Info

Publication number: WO2022237694A1
Application number: PCT/CN2022/091525
Authority: WO
Inventors: 余雅威; 陆绍中; 郭志恒
Original assignee: 华为技术有限公司
Priority date: 2021-05-10
Filing date: 2022-05-07
Publication date: 2022-11-17
Also published as: CN115333899A

Abstract

The present application relates to the field of communication technology and discloses a communication method and an apparatus, which are used for enabling a network device to perform joint channel estimation on a received PUSCH, and improving uplink transmission performance. The method comprises: receiving first indication information and scheduling information for a PUSCH from a network device, the first indication information indicating to enable joint channel estimation; determining a time domain unit used for transmitting the PUSCH according to the scheduling information for the PUSCH; when a PUSCH transmission within the time domain unit satisfies a first condition, determining a plurality of time domain windows, wherein the plurality of time domain windows are situated within said time domain unit, and the first condition comprises at least one of the following: a PUSCH transmission within the time domain unit does not satisfy phase continuity, or the number of slots or time domain symbols in the time domain unit is greater than a first threshold value; and sending the PUSCH to the network device, wherein a PUSCH transmission within each time domain window among the plurality of time domain windows satisfies phase continuity.

Description

A communication method and device

Cross References to Related Applications

This application claims the priority of a Chinese patent application with application number 202110506158.6 and application title "A Communication Method and Device" submitted to the China Patent Office on May 10, 2021, the entire contents of which are incorporated in this application by reference.

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and device.

Background technique

In the uplink transmission of the new radio (NR) system, the performance of the uplink transmission cannot meet the target requirements due to the limitation of the transmission capability of the terminal equipment. For example: limited by the number of antennas of terminal equipment, baseband chip processing capability, limited uplink transmission power and other constraints, the coverage distance and transmission rate of uplink transmission cannot meet the target requirements. Especially for coverage-limited scenarios, the uplink signal (including data signal and pilot signal for measurement or monitoring) carried by the physical uplink shared channel (PUSCH) can be received after long-distance fading. The quality of the received signal at the end is poor, and the channel estimation based on the pilot signal is inaccurate, and the noise and distortion in the uplink signal cannot be well filtered out, resulting in poor demodulation performance of the data signal and affecting the performance of uplink transmission.

In order to improve the performance of uplink transmission, joint channel estimation using pilot signals of multiple slots is proposed as a key technology to improve transmission performance in standard discussions. As shown in Figure 1, the pilot signals in 4 time slots, such as the demodulation reference signal (demodulation reference signal, DMRS), are used for joint channel estimation, and the received signal can be significantly increased by combining the received DMRS. Signal to noise power ratio (SNR), thereby improving the demodulation performance of the data signal and improving the uplink transmission performance. For example: when there are 4 consecutive time slots and there is 1 DMRS in each time slot, an SNR gain of about 6 decibels (dB) can be obtained theoretically by combining the DMRSs of the 4 time slots.

However, the prerequisite for the network device to perform joint channel estimation on uplink signals within a period of time is that the terminal device maintains phase continuity within the period of time. The so-called maintenance of phase continuity means that during the uplink transmission process, the working state of the terminal equipment remains stable and does not change, avoiding random phase jumps that are unknown to both the transceiver and the transceiver due to changes in the working state (such as changes in the amplification gear of the power amplifier, etc.). At present, limited by frequent changes in the working state of the terminal equipment, the phase of the uplink signal sent by the terminal equipment often changes, and there is no joint channel estimation scheme suitable for uplink transmission.

Contents of the invention

Embodiments of the present application provide a communication method and device to improve uplink transmission performance.

In a first aspect, an embodiment of the present application provides a communication method, the method including: receiving scheduling information and first indication information of a physical uplink shared data channel PUSCH from a network device, and the first indication information indicates that joint channel estimation is enabled ; Determine the time domain unit used to transmit the PUSCH according to the scheduling information of the PUSCH; when the PUSCH transmission in the time domain unit meets the first condition, determine multiple time domain windows, wherein the multiple time domain The domain window is located in the time domain unit, and the first condition includes at least one of the following: the PUSCH transmission in the time domain unit does not meet phase continuity, or, the time domain symbols or time slots included in the time domain unit The number is greater than a first threshold; the PUSCH is sent to the network device, where the PUSCH transmission in each of the multiple time domain windows satisfies phase continuity. Optionally, when the PUSCH transmission in the time domain unit does not meet the first condition, the PUSCH is sent to the network device, where the PUSCH transmission in the time domain unit satisfies phase continuity.

It should be understood that the foregoing sending of the PUSCH may be understood as sending an uplink signal through the PUSCH.

Using the above method, by determining the time domain unit for PUSCH transmission scheduled by the network device as one or more time domain windows that can keep the PUSCH transmission phase continuous, the terminal device can maintain the transmitted PUSCH phase in each time domain window Continuously, enabling the network device to perform joint channel estimation on the PUSCH received in each time domain window, improving the accuracy of channel estimation, thereby improving the performance of uplink transmission.

In a possible design, determining that the PUSCH transmission in the time domain unit does not satisfy phase continuity includes one or more of the following: there are at least N consecutive time domain symbols not used for transmission in the time domain unit For the PUSCH, the N is an integer greater than or equal to 1; the frequency domain position of the PUSCH in the time domain unit changes; the power change of the PUSCH in the time domain unit is greater than a second threshold.

The time domain, frequency domain, power and other dimensions of PUSCH transmission are discontinuous. Changes in the time domain, frequency domain, and power will cause changes in the working status of devices in terminal equipment and destroy the phase continuity of PUSCH transmission. The above design is adopted , it is possible to accurately detect whether the PUSCH transmission in the time domain unit satisfies phase continuity from dimensions such as time domain, frequency domain, and power.

In a possible design, two consecutive time domain windows among the plurality of time domain windows satisfy one or more of the following conditions: there are at least N consecutive time domain windows between the two consecutive time domain windows The time domain symbols are not used to transmit the PUSCH, and the N is an integer greater than or equal to 1; the frequency domain positions of the PUSCH transmissions of the two consecutive time domain windows are different; the PUSCH of the two consecutive time domain windows The power difference value is greater than the second threshold value.

In the above design, according to whether the PUSCH transmission can satisfy the phase continuity, the scheduled time domain unit for PUSCH transmission is divided into multiple time domain windows that can maintain the PUSCH transmission phase continuity, which can clearly indicate that the terminal device is in each time domain window. Keeping the phase of the sent PUSCH continuous enables network devices to perform joint channel estimation on the received PUSCH in each time domain window, improving the accuracy of channel estimation, thereby improving the performance of uplink transmission.

In a possible design, the number of time domain symbols or time slots included in each of the multiple time domain windows is less than or equal to the first threshold. Optionally, the first threshold value is determined according to the capability information of maintaining phase continuity, and the method further includes: sending the capability information of maintaining phase continuity to the network device.

In the above design, the number of time domain symbols or time slots included in each time domain window is less than or equal to the ability of the terminal device to maintain phase continuity, which is beneficial to avoid the PUSCH transmitted in the time domain window caused by the insufficient ability of the terminal device to maintain phase continuity. Phase discontinuity problem.

In a possible design, the determining multiple time domain windows includes: determining M time domain windows in the time domain unit, where M is a positive integer, and M is equal to the frequency domain offset of the PUSCH The number of value shifts; when there are at least N consecutive time domain symbols in the first time domain window among the M time domain windows that are not used to transmit the PUSCH, divide the first time domain window into at least two time domains window.

In the above design, the time domain window can be determined according to the number of frequency domain offset values of the PUSCH, which is conducive to meeting the scheduling requirements of the PUSCH and making full use of the frequency hopping diversity gain and the joint channel estimation gain.

In a possible design, the determining the time domain unit capable of sending the PUSCH according to the scheduling information of the PUSCH includes: when the scheduling information of the PUSCH includes the repetition type, the number of repetitions, and the first When the initial time domain symbol position of the first repeated transmission, the continuous time domain symbol length and the slot offset, according to the repetition type of the PUSCH, the number of repetitions, the initial time domain symbol position of the first repeated transmission, the continuous time domain The symbol length and the slot offset determine the time domain units that can transmit the PUSCH.

In a possible design, the determining the time domain unit capable of sending the PUSCH according to the scheduling information of the PUSCH includes: when the scheduling information of the PUSCH includes a time domain resource configuration type of a multi-slot transport block TBoMS, The number of extensions, the starting time domain symbol position of the PUSCH sent in the first slot, the length of continuous time domain symbols, and the slot offset, according to the time domain resource configuration type of the TBoMS, the number of extensions, and the first The starting time-domain symbol position, the length of the continuous time-domain symbols and the time-slot offset of the PUSCH transmitted in the time slot determine the time-domain unit capable of transmitting the PUSCH.

In a possible design, the determining the time domain unit capable of sending the PUSCH according to the scheduling information of the PUSCH includes: when the scheduling information of the PUSCH indicates one or more transport blocks, according to the one or time-domain symbols or time slots occupied by multiple transport blocks, and determine the time-domain unit capable of sending the PUSCH.

Adopting the above-mentioned design is beneficial to clarify the time domain range in which the terminal equipment enables joint channel estimation.

In a second aspect, an embodiment of the present application provides a communication method, the method including: sending scheduling information and first indication information of a physical uplink shared data channel PUSCH to a terminal device, where the first indication information indicates that joint channel estimation is enabled; Determine the time domain unit used to transmit the PUSCH according to the scheduling information of the PUSCH; when the PUSCH transmission in the time domain unit meets the first condition, determine multiple time domain windows, wherein the multiple time domains The window is located in the time domain unit, and the first condition includes at least one of the following: the PUSCH transmission in the time domain unit does not satisfy phase continuity, or, the number of time domain symbols or time slots included in the time domain unit greater than the first threshold; receiving the PUSCH from the terminal device, and performing joint channel estimation on the PUSCH in each of the multiple time domain windows. Optionally, when the PUSCH transmission in the time domain unit does not meet the first condition, receive the PUSCH from the terminal device, and perform joint channel estimation on the PUSCH in the time domain unit.

In a possible design, the number of time domain symbols or time slots included in each of the multiple time domain windows is less than or equal to the first threshold.

In a possible design, the method further includes: receiving capability information of maintaining phase continuity from a terminal device; and determining the first threshold value according to the capability information of maintaining phase continuity.

In the third aspect, the embodiment of the present application provides a communication device, which has the function of realizing the above-mentioned first aspect or any possible design method of the first aspect, and the function can be realized by hardware, or by hardware Execute the corresponding software implementation. The hardware or software includes one or more modules corresponding to the above functions, such as a transceiver unit and a processing unit.

In one possible design, the device may be a chip or an integrated circuit.

In a possible design, the device includes a memory and a processor, and the memory is used to store a program executed by the processor. When the program is executed by the processor, the device can perform any of the above-mentioned first aspect or the first aspect. One possible approach in the design.

In a possible design, the device may be a terminal device.

In the fourth aspect, the embodiment of the present application provides a communication device, which has the function of realizing the above-mentioned second aspect or any possible design method of the second aspect, and the function can be realized by hardware, or can be realized by hardware Execute the corresponding software implementation. The hardware or software includes one or more modules corresponding to the above functions, such as a transceiver unit and a processing unit.

In one possible design, the device may be a chip or an integrated circuit.

In a possible design, the device includes a memory and a processor, and the memory is used to store a program executed by the processor. When the program is executed by the processor, the device can perform any of the above-mentioned second aspect or the second aspect. One possible approach in the design.

In one possible design, the device may be a network device.

In the fifth aspect, the embodiment of the present application provides a communication system, the communication system includes a terminal device and a network device, and the terminal device can execute the method in the above-mentioned first aspect or any possible design of the first aspect; The network device may execute the method in any possible design of the second aspect or the second aspect.

In the sixth aspect, the embodiments of the present application provide a computer-readable storage medium, the computer-readable storage medium stores computer instructions, and when the computer instructions are executed by a communication device, the above-mentioned first aspect or the first aspect can be realized The method described in any possible design of the above-mentioned second aspect or the method described in any possible design of the second aspect.

In the seventh aspect, the embodiment of the present application also provides a computer program product, including computer programs or instructions, when the computer programs or instructions are executed by the communication device, any possible design of the above-mentioned first aspect or the first aspect can be realized The method described in , or the method described in implementing the second aspect or any possible design of the second aspect.

In the eighth aspect, the embodiment of the present application further provides a chip, the chip is coupled with the memory, and is used to read and execute the program instructions stored in the memory, so as to realize the above-mentioned first aspect or any possibility of the first aspect The method described in the design, or the method described in the second aspect or any possible design of the second aspect.

Please refer to the technical effects achieved by the above first aspect for the technical effects achieved by the above second aspect to the eighth aspect, and will not be repeated here.

Description of drawings

FIG. 1 is a schematic diagram of joint channel estimation provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a network architecture provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a communication method provided in an embodiment of the present application;

FIG. 4 is one of the schematic diagrams of PUSCH repetition mapping provided by the embodiment of the present application;

FIG. 5 is the second schematic diagram of PUSCH repetition mapping provided by the embodiment of the present application;

FIG. 6 is one of the TBoMS mapping diagrams provided by the embodiment of the present application;

FIG. 7 is the second schematic diagram of TBoMS mapping provided by the embodiment of the present application;

FIG. 8 is a schematic diagram of TB mapping provided by the embodiment of the present application;

FIG. 9A, FIG. 9B and FIG. 9C are schematic diagrams of time domain window division based on time domain continuity provided by the embodiment of the present application;

FIG. 10 is a schematic diagram of time-domain window division based on frequency-domain continuity provided by an embodiment of the present application;

FIG. 11A and FIG. 11B are schematic diagrams of time-domain window division based on power continuity provided by the embodiment of the present application;

FIG. 12A and FIG. 12B are schematic diagrams of time domain window division based on frequency domain offset values provided by the embodiment of the present application;

Figure 13A and Figure 13B are one of the schematic diagrams of time domain window division based on the frequency domain offset value and time domain continuity provided by the embodiment of the present application;

FIG. 14 is the second schematic diagram of time domain window division based on frequency domain offset value and time domain continuity provided by the embodiment of the present application;

FIG. 15 is one of the schematic diagrams of the communication device provided by the embodiment of the present application;

FIG. 16 is the second schematic diagram of the communication device provided by the embodiment of the present application.

Detailed ways

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as new radio (new radio, NR) systems, or to future communication systems or other similar communication systems, such as 6G systems, etc., where the NR system can also It is called the fifth generation (5th generation, 5G) mobile communication system. Specifically, taking the NR system as an example, the architecture of the communication system applied in the embodiment of the present application can be shown in Figure 2, including terminal equipment and network equipment, and uplink communication and downlink communication can be performed between the terminal equipment and network equipment. The sending device (sending end) for uplink communication is a terminal device, and the corresponding receiving device (receiving end) is a network device, and the sending device (sending end) for downlink communication is a network device, and the corresponding receiving device (receiving end) is a terminal device. It should be noted that the number of terminal devices and network devices in the communication system shown in FIG. 2 is not limited in this embodiment.

In order to facilitate the understanding of those skilled in the art, some terms in the embodiments of the present application are explained below.

1) Terminal equipment, including equipment that provides voice and/or data connectivity to users, for example, may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem. The terminal device can communicate with the core network via a radio access network (radio access network, RAN), and exchange voice and/or data with the RAN. The terminal device may include user equipment (user equipment, UE), wireless terminal device, mobile terminal device, device-to-device communication (device-to-device, D2D) terminal device, V2X terminal device, machine-to-machine/machine-type communication ( machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, internet of things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station , remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device) etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket, hand-held, computer built-in mobile devices, and the like. For example, personal communication service (PCS) telephone, cordless telephone, session initiation protocol (session initiation protocol, SIP) telephone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), and other equipment. Also includes constrained devices, such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities, etc. For example, it includes barcodes, radio frequency identification (radio frequency identification, RFID), sensors, global positioning system (global positioning system, GPS), laser scanners and other information sensing devices.

As an example but not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc., which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

The various terminal devices described above, if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be considered as vehicle-mounted terminal devices. ).

In this embodiment of the present application, the terminal device may further include a relay (relay). Or it can be understood that all devices capable of performing data communication with the base station can be regarded as terminal devices.

2) The network device may refer to the device in the access network that communicates with the wireless terminal device through one or more cells through the air interface. The network device may be a node in a radio access network, may also be called a base station, and may also be called a radio access network (radio access network, RAN) node (or device). Currently, examples of some network devices are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), base band unit (base band unit , BBU), or wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), etc. In addition, in a network structure, the network device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node. The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and realizes the functions of radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer. The DU is responsible for processing physical layer protocols and real-time services, realizing the functions of the radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical (physical, PHY) layer.

3), time slot (slot), define a time slot in NR to be made up of 14 orthogonal frequency-division multiple access (orthogonal frequency-division multiplexing, OFDM) symbols, for the convenience of description, also can be described in the follow-up description of this application OFDM symbols are referred to as time-domain symbols or symbols for short, and will not be described separately. Among them, a time slot can include downlink time domain symbols (downlink symbols), uplink time domain symbols (uplink symbols), and flexible time domain symbols (flexible symbols), downlink time domain symbols cannot be used for uplink transmission; uplink time domain symbols Cannot be used for downlink transmission; flexible time domain symbols can be used for both downlink and uplink transmission. NR supports one time slot for uplink transmission, denoted as uplink (uplink, U) slot, all time domain symbols in this time slot are uplink time domain symbols; supports one time slot for downlink transmission, denoted as downlink (downlink) , D) time slot, all time domain symbols in this time slot are downlink time domain symbols; also support a time slot with both uplink and downlink configurations, denoted as special (special, S) time slot, in this time slot includes at least two of downlink time domain symbols, flexible time domain symbols and uplink time domain symbols.

4), channel estimation, channel estimation is the process of estimating the fading experienced by the signal in the transmission process of the wireless channel from the received data, including amplitude attenuation, phase rotation, frequency offset and other components, through channel estimation, the data signal can be The demodulation provides channel state information (CSI), such as signal scattering (scattering), environmental fading (fading, multipath fading or shadowing fading), distance attenuation (power decay of distance) and other information, for the correctness of the data signal demodulation support. Joint channel estimation, that is, combining multiple pilot signals to obtain more accurate pilot signals, thereby obtaining higher SNR gain, and performing channel estimation, as shown in Figure 1, combining the DMRS of 4 slots to obtain higher SNR gain for channel estimation.

5) When the terminal device sends PUSCH, random phase jumps will be introduced, which will destroy the phase continuity factors: (1) When the power of the terminal device to send PUSCH changes, it may cause the power amplifier of the terminal device to send PUSCH to change from an amplification gear to Jumping to another amplification gear, when the amplification gear jumps, a random phase will be introduced into the sent PUSCH, destroying the phase continuity of the PUSCH; (2) When the frequency domain position of the terminal device sending the PUSCH changes, for example Frequency hopping will cause the switching of the working frequency of the device (such as the oscillator) in the terminal equipment, and will also introduce a random phase into the sent PUSCH, destroying the phase continuity of the PUSCH; (3) when the PUSCH sent by the terminal equipment is in the When the time domain is discontinuous, it may cause the device (such as the amplifier) in the terminal equipment to enter the sleep state (or turn off), and then enter the working state from the sleep state, and the switching of the amplifier on and off/sleep state may also introduce a Random phase into the sent PUSCH, destroying the phase continuity of PUSCH; (4) When the antenna port of the PUSCH sent by the terminal device changes, because the radio frequency links corresponding to different antenna ports are different, the radio frequency link needs to be switched. However, the RF link switching will shut down the original RF link and open the new RF link. During the state switching of the device on and off, a random phase may be introduced into the transmitted PUSCH, which will destroy the transmitted PUSCH. Phase continuity of PUSCH. After the random phase is introduced, as shown in Figure 1, assuming that a random phase is introduced into the DMRS signal of the second slot, the DMRS of the second slot cannot be directly merged with the DMRS of the first slot (possibly The combined signal quality is even worse), which makes it impossible to perform joint channel estimation and loses the performance gain of joint channel estimation. In addition, it should be understood that the above sending of the PUSCH can be understood as sending an uplink signal through the PUSCH.

To sum up, it can be known that discontinuity in the time domain, frequency domain, power, or antenna port of the PUSCH transmission will destroy the phase continuity of the PUSCH transmission. The discontinuity of dimensions such as the time domain, frequency domain, power, and antenna port means that the time domain, frequency domain, power, antenna port, etc. change.

In addition, the phase continuity of PUSCH transmission is also related to the ability of the terminal equipment to maintain phase continuity. (1) Some terminal devices cannot maintain uplink and downlink synchronization with network devices for a long time, and need to perform synchronization calibration at regular intervals; (2) Some terminal devices need to regularly measure the overall fading information of all antenna ports to select the optimal antenna (3) Some terminal equipment needs to recalibrate the channel fading after working for a period of time to compensate. When the terminal equipment adjusts the above three factors, it cannot perform PUSCH transmission, which will affect the phase continuity of PUSCH transmission. However, the time for different terminal equipment to adjust the above three factors can be different, which is related to the capability of the terminal equipment. For example, some terminal equipment The device is relatively good, and the above three factors will not change for a long time, so the terminal equipment does not need to be adjusted frequently, and can maintain phase continuity for a long time.

This application aims to split the time domain unit for PUSCH transmission scheduled by the network device into multiple time domain windows that can keep the PUSCH transmission phase continuous, so that the network device can combine the PUSCH received in each time domain window Channel estimation, improving the accuracy of channel estimation, thereby improving the performance of uplink transmission.

Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. In addition, it should be understood that in the embodiments of the present application, the word "exemplary" is used as an example, illustration or illustration. Any embodiment or design described herein as "example" is not to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word example is intended to present concepts in a concrete manner.

The terms "comprising" and "having" in the embodiments of the present application, claims and drawings are not exclusive. For example, a process, method, system, product or device including a series of steps or modules is not limited to the listed steps or modules, and may also include unlisted steps or modules. The terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship. It should be understood that in this embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information. And, unless otherwise stated, the ordinal numerals such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or priority of multiple objects. Importance. The "plurality" referred to in this application means two or more.

In addition, in this embodiment of the application, information, signal (signal), message (message), and channel (channel) can sometimes be used interchangeably. It should be noted that when the differences are not emphasized, the meanings they want to express are consistent of. "的(of)", "corresponding (corresponding, relevant)" and "corresponding (corresponding)" can sometimes be used interchangeably. It should be pointed out that when the difference is not emphasized, the meanings they intend to express are consistent.

Fig. 3 is a schematic diagram of a communication method provided by an embodiment of the present application, the method includes:

S301: The network device sends PUSCH scheduling information and first indication information to a terminal device, and the terminal device receives the PUSCH scheduling information and the first indication information.

Wherein, the first instruction information indicates to enable joint channel estimation, that is, instructs the terminal device to enable the phase continuity function, or indicates to perform joint channel estimation on the PUSCH sent by the terminal device according to the PUSCH scheduling information.

In some implementations, the network device may send PUSCH scheduling information to the terminal device through radio resource control (radio resource control, RRC) signaling, etc., and configure information such as PUSCH transmission resources for the terminal device. For example: the network device can send to the terminal device through RRC signaling including the repetition type of PUSCH, the number of repetitions (K), the initial time domain symbol position (start, S) of the first repeated transmission, and the continuous time domain symbol length (length , L), and the scheduling information used to indicate the time slot offset (K ₂ ) of the time slot (K _S ) starting to transmit the PUSCH, and configure the PUSCH transmission resource for the terminal device. In addition, the network device may also send the first indication information indicating that joint channel estimation is enabled to the terminal device through RRC signaling or downlink control information (DCI) signaling, etc., so that the terminal device knows that the network device determines the terminal device according to Joint channel estimation is performed on the PUSCH sent by the scheduling information of the PUSCH. As an example, take sending the first indication information to the terminal device through DCI signaling as an example. There may be a 1-bit (bit) field in the DCI signaling to indicate that joint channel estimation is enabled. When the network device sends the 1-bit When the field is configured as 0, it indicates that joint channel estimation is not enabled, and when the network device configures the 1-bit field as 1, it indicates that joint channel estimation is enabled.

S302: The terminal device determines a time domain unit for transmitting the PUSCH according to the scheduling information of the PUSCH.

In this embodiment of the present application, the scheduling information of the PUSCH may be scheduling information of PUSCH repetition, scheduling information of a transport block over multiple slot (TBoMS) or scheduling information of a transport block (TB), etc., the terminal The device may determine a time domain unit for transmitting the PUSCH, that is, a time domain resource for transmitting the PUSCH, according to specific PUSCH scheduling information.

In the following, the process of determining the time domain unit for transmitting the PUSCH will be introduced in combination with the scheduling information of different types of PUSCH.

Type 1: The scheduling information of the PUSCH is the scheduling information of the PUSCH repetition, and the terminal device determines the time domain unit for transmitting the PUSCH according to the scheduling information of the PUSCH repetition.

In the NR system, there are two types of PUSCH repetition (repetition): PUSCH repetition type A and PUSCH repetition type B. Wherein, the PUSCH repetition type A is repeated K times in units of time slots, the PUSCH repetition type B is repeated K times in units of continuous time domain symbol length (L), and K is the number of PUSCH repetitions. The scheduling information of PUSCH repetition may include the repetition type of PUSCH, the number of repetitions (K), the starting time domain symbol position (S) and the continuous time domain symbol length (L) of the first repeated transmission, and the time domain symbol length (L) used to indicate the start of PUSCH transmission. The time slot offset (K 2 ) of the time slot (K _S ) of the time slot (K ₂ ), wherein how to determine the process of K _S according to K ₂ can refer to the 3GPP standard Rel-16, and will not be repeated here.

For the PUSCH repetition type A, the terminal device may determine the time slot occupied by the PUSCH repetition as the time domain unit for transmitting the PUSCH. Taking K _S =5, K=4, S=0, L=10 as an example, the mapping pattern is shown in Figure 4, and a single repetition of PUSCH repetition type A will not cross the time slot boundary. The terminal device may determine the time slot 5, the time slot 6, the time slot 7 and the time slot 8 occupied by the PUSCH repetition as time domain units for transmitting the PUSCH.

In some implementations, the terminal device may also determine the time domain symbols occupied by the start time domain symbol to the end time domain symbol of the PUSCH repetition as the time domain unit used to transmit the PUSCH. Still taking FIG. 4 as an example, the terminal The device can assign the time-domain symbols occupied by time-domain symbol 0 of slot 5 to time-domain symbol 9 of slot 8 (that is, time-domain symbols 0 to Domain symbol 9) is determined as a time domain unit for transmitting PUSCH.

For PUSCH repetition type B. The terminal device may determine the K*L time domain symbols occupied by the PUSCH repetition as a time domain unit for transmitting the PUSCH. Taking K _S =5, K=4, S=0, and L=10 as an example, the mapping pattern thereof is shown in FIG. 5 , and a single repetition of PUSCH repetition type B may cross a time slot boundary. The terminal device may determine a total of 40 time domain symbols from time domain symbol 0 of slot 5 to time domain symbol 11 of slot 7 occupied by the PUSCH repetition as time domain units for transmitting the PUSCH.

Type 2: The scheduling information of the PUSCH is the scheduling information of the TBoMS, and the terminal device determines the time domain unit for transmitting the PUSCH according to the scheduling information of the TBoMS.

TBoMS time-domain resource configuration types can be divided into two types, namely TBoMS time-domain resource configuration type A and TBoMS time-domain resource configuration type B. Domain resource configuration type B is extended by K times in units of continuous time domain symbol length (L), where K is the number of TBoMS extensions. TBoMS scheduling information may include PUSCH time-domain resource configuration type, extension quantity (K), starting time-domain symbol position (S) of PUSCH transmitted in the first slot, continuous time-domain symbol length (L) and time Slot offset (slot offset), wherein the slot offset indicates the time slot at which TBoMS starts, and the terminal device can determine the time slot at which TBoMS starts according to the time slot received from the TBoMS scheduling information and the slot offset in the TBoMS scheduling information .

For TBoMS time domain resource configuration type A, the terminal device may determine the time slot occupied by TBoMS as a time domain unit for transmitting the PUSCH. Taking the starting time slot of TBoMS as time slot 5, K=4, S=0, L=10 as an example, its mapping pattern is shown in FIG. 6 . The terminal device may determine the time slot 5, the time slot 6, the time slot 7 and the time slot 8 occupied by the PUSCH repetition as time domain units for transmitting the PUSCH.

In a possible implementation, the terminal device may also determine the time domain symbols occupied by the start time domain symbol to the end time domain symbol of TBoMS as the time domain unit used to transmit the PUSCH, still taking Figure 6 as an example, the terminal The device can assign time-domain symbols occupied by time-domain symbol 0 of slot 5 to time-domain symbol 9 of slot 8 (that is, time-domain symbols 0 to Domain symbol 9) is determined as a time domain unit for transmitting PUSCH.

For the time-domain resource configuration type B of TBoMS, the continuous time-domain symbol length (L) can be less than or equal to 14 (that is, the continuous time-domain symbol length is less than or equal to the number of time-domain symbols included in a time slot), and can also be greater than 14 ( That is, the length of continuous time-domain symbols is greater than the number of time-domain symbols included in one slot), wherein when the length (L) of continuous time-domain symbols is greater than 14, the number of extensions (K) can be configured as 1 or not configured. Taking the TBoMS start time slot as time slot 5, K=4, S=0, L=10 as an example, the terminal equipment can use time domain symbol 0 of time slot 5 to time domain symbol 11 of time slot 7 for a total of 40 time slots. A domain symbol is determined as a time domain unit for transmitting PUSCH.

Taking TBoMS starting time slot as time slot 5, S=0, L=40 as an example, its mapping pattern is shown in Figure 7, the terminal equipment can transfer the time domain symbol 0 of time slot 5 to the time domain symbol of time slot 7 11 A total of 40 time-domain symbols are determined as time-domain units for transmitting the PUSCH.

Type 3: The scheduling information of the PUSCH is the scheduling information of one or more TBs, and the terminal device determines the time domain unit for transmitting the PUSCH according to the scheduling information of one or more TBs.

For the scheduling of any TB, the scheduling information including the following parameters can be used to determine the time domain resources of the PUSCH corresponding to the TB transmission:

When a TB is repeated, the relevant configuration information determined by the time domain resource of the TB is exactly the same as the PUSCH repetition described in Type 1 above, namely: the repetition type (type A or type B), the number of repetitions K, and the start of the first repetition The time domain symbol position (start, S), the length/number of consecutive time domain symbols occupied by one repetition (length, L), and the time slot offset of the first repetition (K ₂ ).

When the TB does not repeat, the relevant configuration information determined by the time domain resources of the TB includes: the time slot offset (K ₂ ) of the PUSCH used to transmit the TB, the starting time domain symbol position of the PUSCH on the determined time slot (start, S) and the continuous time-domain symbol length/number (length, L) of the PUSCH on a certain time slot.

Wherein, the scheduling information of multiple TBs may be carried in one DCI signaling, or may be carried in multiple independent DCI signalings.

As an example, when the scheduling information of the TB schedules two TBs as shown in FIG. Time domain unit for transmitting PUSCH. The sending of any one of the two TBs may be repeated sending or non-repetitive sending.

It should be understood that the PUSCH scheduling information may also include multiple types of PUSCH repeated scheduling information, TBoMS scheduling information, or TB scheduling information, and the terminal device may also use the PUSCH repeated scheduling information, TBoMS scheduling information or The time-domain resources scheduled by various scheduling information in the TB scheduling information and the like jointly determine the time-domain unit.

S303: When the PUSCH transmission in the time domain unit satisfies a first condition, the terminal device determines multiple time domain windows.

Wherein, the multiple time domain windows are located in the time domain unit, and the first condition includes at least one of the following: the PUSCH transmission in the time domain unit does not meet phase continuity, or, the time domain unit includes The number of time-domain symbols or time slots is greater than the first threshold.

The time domain discontinuity, frequency domain discontinuity, or power discontinuity of the PUSCH transmission will destroy the phase continuity of the PUSCH transmission. Therefore, the PUSCH transmission in the time domain unit does not satisfy phase continuity may include one or more of the following situations: there are at least N consecutive time domain symbols in the time domain unit that are not used to transmit PUSCH, and the N is greater than or equal to 1 is an integer; the frequency domain position of the PUSCH in the time domain unit changes; the power change of the PUSCH in the time domain unit is greater than the second threshold value.

In the case that the PUSCH transmission in the time domain unit does not satisfy the phase continuity, the terminal device can split the time domain unit, and determine multiple time domain windows that meet the phase continuity in the time domain unit, and in each time domain window Keep PUSCH transmission satisfying phase continuity. The determination of the time domain window will be described below in combination with specific situations.

Situation 1: There are at least N consecutive time domain symbols in the time domain unit that are not used to transmit the PUSCH, and the terminal device can use the time domain where at least N consecutive time domain symbols that are not used to transmit the PUSCH in the time domain unit are located position to determine the time domain window. Where N is an integer greater than or equal to 1, which can be defined by the protocol, or can be determined by the terminal equipment according to the time required for its own device (such as an amplifier) to enter a sleep state without PUSCH transmission, and report to the network equipment.

Taking the value of N as 3 as an example, as shown in Figure 9A, the time domain position 1, time domain position 2 and time domain position 3 in the time domain unit satisfy that there are at least 3 consecutive time domain symbols not used for transmitting PUSCH , the terminal device may split the time-domain unit into three time-domain windows according to time-domain position 1, time-domain position 2, and time-domain position 3. In addition, because the time domain position 3 is at the boundary of the time domain unit, it can be ignored without interrupting the transmission of the PUSCH, and the terminal device can also directly divide the time domain unit into three time domain windows according to the time domain position 1 and the time domain position 2.

Taking the value of N as 5 as an example, as shown in FIG. 9B, only the time domain position 1 in the time domain unit satisfies the existence of at least 5 consecutive time domain symbols that are not used to transmit the PUSCH, and the terminal device can according to the time domain position 1 splits the time-domain unit into two time-domain windows.

Taking the value of N as 6 as an example, as shown in FIG. 9C, there is no time domain position in the time domain unit that satisfies at least 6 consecutive time domain symbols that are not used to transmit the PUSCH. Although the PUSCH transmission is discontinuous, the The time domain unit does not need to be split, the PUSCH transmission can still satisfy the phase continuity, and the terminal device can use the time domain unit as a time domain window.

In some implementations, the consecutive time domain symbols not used for PUSCH transmission in the time domain unit are all less than N, and when time domain window splitting is not performed, the downlink reception of the terminal device on the time domain symbols not used for PUSCH transmission can be ignored, That is, the terminal device does not monitor and receive downlink signals, and does not switch between uplink and downlink.

Case 2: The frequency domain position of the PUSCH in the time domain unit changes, and the terminal device determines the time domain window according to the time domain position where the frequency domain position of the PUSCH in the time domain unit changes.

As shown in Figure 10, the time domain unit is 4 time slots, but the network device configures the terminal device to perform frequency hopping every 2 time slots, and the terminal device changes the time domain position 1 according to the PUSCH frequency domain position in the time domain unit , the time-domain unit can be split into two time-domain windows, and the PUSCH transmission is kept to meet phase continuity in each time-domain window.

Case 3: The power change of the PUSCH in the time domain unit is greater than the second threshold value, and the terminal device divides the time domain window according to the time domain position where the power change of the PUSCH in the time domain unit is greater than the second threshold value.

As shown in Figure 11A, when the PUSCH repeats 3, because the network device sends a transmit power control (transmit power control, TPC) command to the terminal device through the DCI format (format) 2_2 signaling to adjust the power of the terminal device to send the PUSCH, resulting in PUSCH If the power change between repetition 2 and PUSCH repetition 3 is greater than the second threshold value, the phase continuity between PUSCH repetition 2 and PUSCH repetition 3 cannot be maintained, and the terminal device is greater than the second threshold according to the power change of PUSCH in the time domain unit The time domain position of the value is 1 to split the time domain unit into 2 time domain windows, and keep the PUSCH transmission in each time domain window to meet the phase continuity. The second threshold may be defined by the protocol, or may be indicated by the network device to the terminal device, which is not limited in this application.

As shown in Figure 11B, at TB#2, because the network device sends a TPC command to the terminal device to adjust the power of the PUSCH sent by the terminal device, the power change of the PUSCH between TB#1 and TB#2 is greater than the second threshold value The terminal device splits the time domain unit into two time domain windows according to the time domain position 1 where the power change of the PUSCH in the time domain unit is greater than the second threshold value, and maintains PUSCH transmission in each time domain window to meet phase continuity.

It should be understood that the PUSCH transmission in the time domain unit does not satisfy the phase continuity, including that there are at least N consecutive time domain symbols that are not used to transmit the PUSCH, the frequency domain position of the PUSCH changes, and the power change of the PUSCH is greater than the second threshold When there are many kinds of values, the terminal device can according to the time domain position in the time domain unit that does not satisfy the phase continuity, such as the time domain position where at least N consecutive time domain symbols that are not used to transmit PUSCH exist in the time domain unit Divide (or determine) the time-domain windows at multiple time-domain positions among the time-domain positions where the frequency-domain position of the PUSCH changes, and the time-domain positions where the power of the PUSCH changes greater than the second threshold.

In addition, the number of time-domain symbols or time slots included in the time-domain unit is greater than the first threshold value, or the time-domain symbols included in the time-domain window divided by the time-domain positions that do not satisfy phase continuity according to the PUSCH transmission in the time-domain unit or When the number of time slots is greater than the first threshold value, the terminal device can also divide the time domain units into time domain windows according to the first threshold value, or pair the included time domain symbols or time slots with a number greater than The time domain window of the first threshold value is further divided into time domain windows.

As an example, the time domain unit includes 8 time slots, and the first threshold value is 4 time slots, then the terminal device can use every 4 time slots as a time domain window, and divide the time domain unit into 2 time slots. domain window.

As an example, as shown in FIG. 8 , the time domain unit includes 3 time slots, and the first threshold value is 4 time slots, and the terminal device may directly use the time domain unit as a time domain window.

It should be understood that, when the PUSCH transmission in the time domain unit does not meet the requirements of phase continuity and the included time domain symbols or the number of time slots is greater than the first threshold value, the terminal device can firstly transmit the PUSCH according to the time domain when the phase continuity is not satisfied. Performing time domain window division on the time domain unit at the domain position, and then further dividing the time domain window according to the first threshold value for the obtained time domain window including the time domain symbols or the number of time slots greater than the first threshold value; Of course, it is also possible to firstly divide the time domain units into time domain windows according to the first threshold value, then for the time domain windows whose PUSCH transmission does not satisfy the phase continuity, and then divide the time domain windows according to the time domain positions where the PUSCH transmission does not satisfy the phase continuity The division of time domain windows is further performed. Through the above division, two consecutive time domain windows among the multiple time domain windows meet one or more of the following conditions: there are at least N consecutive time domain symbols between the two consecutive time domain windows that are not used for transmission The PUSCH described above; the frequency domain positions of the PUSCH transmissions of the two consecutive time domain windows are different; the power difference of the PUSCH of the two consecutive time domain windows is greater than the second threshold value. And the number of time domain symbols or time slots included in each of the multiple time domain windows is less than or equal to the first threshold.

For the first threshold value, it can be determined according to the ability information of the terminal equipment to maintain phase continuity. For example, the device in the terminal equipment can support the terminal to perform uplink and downlink synchronization with the network equipment within 4 time slots, and there is no need to reselect the optimal threshold. port and perform channel fading compensation, the first threshold may be determined as 4 time slots or 56 time domain symbols.

In addition, in order to make it easier for the network device to know the first threshold value, the terminal device may also send the capability information of the terminal device to maintain phase continuity to the network device, so that the network device can use the capability information of the terminal device to maintain phase continuity (such as 4 time slots) ) to determine the first threshold value.

In addition, in some implementations, the network device also configures the number of frequency domain offset values (that is, the number of frequency hopping) of the PUSCH. The terminal device may also determine the time domain position where the frequency domain position of the PUSCH transmission in the time domain unit changes according to the number (M) of the PUSCH frequency domain offset value, and divide the time domain unit into multiple time domain windows.

In a possible implementation, the terminal device may divide the time domain unit into M time domain windows evenly according to the number (M) of frequency domain offset values of the PUSCH.

In addition, when the number (or number) of time domain units included in the time domain unit cannot be equally divided by M time domain windows, the time domain unit can be approximately evenly divided into M time domain windows, wherein the time domain units can be It is a time-domain symbol, time slot, mini-slot, etc., which may be defined by a protocol or indicated by a network device.

As an example, when the number of time-domain units included in a time-domain unit cannot be equally divided by M time-domain windows, the number of time-domain units included in M-1 time-domain windows among the M time-domain windows is equal, the The number (N1) of time domain units included in any one of the M-1 time domain windows satisfies the following formula:

in

Indicates rounding down.

The number (N2) of time domain units included in the remaining 1 time domain window among the M time domain windows satisfies:

N2=Number of all time domain units included in the time domain unit-N1(M-1)

Optionally, among the above-mentioned M time-domain windows, the remaining 1 time-domain window may be the first time-domain window or the last time-domain window in the M time-domain windows according to the order of time domains, or any time domain window.

As an example, as shown in Figure 12A, the time domain unit is 8 time slots, and the frequency domain offset value of PUSCH is 2, then the time domain unit can be equally divided into 2 time domain windows, each time slot The domain window includes 4 time slots, and the frequency domain position is adjusted according to the frequency domain offset value between the 2 time domain windows (that is, frequency hopping).

As shown in Figure 12B, the time domain unit is 8 time slots, and the number of frequency domain offset values of PUSCH is 3, then the time domain unit can be divided into 3 time domain windows, time domain window 1 and time domain window 2 It includes 3 time slots, the time domain window 3 includes 2 time slots, and the frequency domain position is adjusted according to the frequency domain offset value between the 3 time domain windows (that is, frequency hopping).

In addition, when there are M time-domain windows determined according to the number (M) of frequency-domain offset values of PUSCH, there are PUSCH transmissions in the time-domain windows that do not satisfy phase continuity (for example, there are at least N consecutive time-domain symbols that are not used for When transmitting the PUSCH or the power change of the PUSCH is greater than the second threshold value) or the number of time domain symbols or time slots included is greater than the first threshold value, the time domain window is further split.

As shown in Figure 13A, there are at least N consecutive time domain symbols not used for PUSCH transmission in the second time slot in time domain window 2, and the terminal device is based on the fact that there are at least N consecutive time domain symbols not used for PUSCH transmission Time domain position 1, split time domain window 2 into time domain window 21 and time domain window 22, wherein time domain window 21 can be used as new time domain window 2, and time domain window 22 can be used as new time domain window 3, The original time domain window 1 remains unchanged. In addition, as shown in FIG. 13A and FIG. 13B , after determining M time domain windows according to the number (M) of frequency domain offset values of PUSCH, a certain time domain window among the M time domain windows is further split Afterwards, the terminal device can adjust the frequency domain position according to the frequency domain offset value between multiple time domain windows (such as time domain window 21 and time domain window 22) split by the time domain window (such as time domain window 2). , and the frequency domain position may not be adjusted according to the frequency domain offset value.

In addition, it needs to be understood that the terminal device may also split the time domain unit into multiple time domain windows according to the time domain position in the time domain unit that does not meet the phase continuity and the first threshold value, and then divide the time domain unit into multiple time domain windows according to the frequency of the PUSCH. The number of domain offset values, and the frequency domain position is adjusted (ie frequency hopping) according to the frequency domain offset value between multiple split time domain windows.

As shown in Figure 14, the time domain unit includes 8 time slots, where there is a time domain position 1 in the sixth time slot, and time domain position 1 includes at least N consecutive time domain symbols that are not used to transmit the PUSCH, and the terminal device according to The time domain bit is set to 1, and the time domain unit is split into two time domain windows. The number of frequency domain offset values is 2, and the terminal device adjusts the frequency domain position between two time domain windows according to the 2 frequency domain offset values (that is, frequency hopping).

S304: The terminal device sends the PUSCH to the network device, and the network device receives the PUSCH, where PUSCH transmission in each of the multiple time domain windows satisfies phase continuity.

S305: The network device performs joint channel estimation on the PUSCH in each of the multiple time domain windows.

In the embodiment of the present application, the network device determines the time domain unit used to transmit the PUSCH according to the scheduling information of the PUSCH, and when the PUSCH transmission in the time domain unit meets the first condition, it is determined that the realization of multiple time domain windows is consistent with that of the terminal device , will not be repeated here. After determining multiple time domain windows, the terminal device keeps the transmitted PUSCH phase continuous in each time domain window (for example, the terminal device uses the same power and the same antenna for transmission in each time domain window), and then the network device can Joint channel estimation is performed for the PUSCHs that meet the phase continuity received in each time domain window, such as joint channel estimation for DMRS in the PUSCH, so as to demodulate the data signal in the PUSCH according to the joint channel estimation results, thereby improving the uplink transmission. performance.

In addition, it should be understood that when the PUSCH transmission in the time domain unit does not meet the first condition, that is, when the PUSCH transmission in the time domain unit meets the phase continuity and the number of time domain symbols or time slots included is less than or the first threshold value , the terminal device and the network device can also directly use the time domain unit as a time domain window, the terminal device keeps the phase continuity of the PUSCH sent in the time domain unit, and the network device combines the PUSCH received in the time domain unit that meets the phase continuity channel estimation.

The foregoing mainly introduces the solution provided by the present application from the perspective of interaction between the network device and the terminal device. It can be understood that, in order to realize the above functions, each network element (or device) includes a corresponding hardware structure and/or software module (or unit) for performing each function. Those skilled in the art should easily realize that the present application can be implemented in the form of hardware or a combination of hardware and computer software in combination with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

FIG. 15 and FIG. 16 are schematic structural diagrams of possible communication devices provided by the embodiments of the present application. These communication apparatuses may be used to realize the functions of the terminal device or the network device in the foregoing method embodiments, and thus also realize the beneficial effects of the foregoing method embodiments. In the embodiments of the present application, the communication device may be the terminal device or the network device in the above method embodiments, and may also be a module (such as a chip) applied to the terminal device or the network device.

As shown in Figure 15. The communication device 1500 may include: a processing unit 1502 , a transceiver unit 1503 , and may also include a storage unit 1501 . The communication device 1500 is configured to implement the functions of the terminal device or the network device in the foregoing method embodiments.

In a possible design, the processing unit 1502 is configured to implement corresponding processing functions. The transceiver unit 1503 is used to support communication between the communication device 1500 and other network entities. The storage unit 1501 is configured to store program codes and/or data of the communication device 1500 . Optionally, the transceiver unit 1503 may include a receiving unit and/or a sending unit, configured to perform receiving and sending operations respectively.

When the communication device 1500 is used to implement the functions of the terminal device in the method embodiment:

The transceiver unit 1503 is configured to receive scheduling information and first indication information of the physical uplink shared data channel PUSCH from the network device, and the first indication information indicates that joint channel estimation is enabled;

The processing unit 1502 is configured to determine a time domain unit for transmitting the PUSCH according to the scheduling information of the PUSCH; and when the PUSCH transmission in the time domain unit satisfies a first condition, determine a plurality of time domain windows, wherein , the plurality of time domain windows are located in the time domain unit, and the first condition includes at least one of the following: the PUSCH transmission in the time domain unit does not satisfy phase continuity, or, the time domain unit includes The number of time domain symbols or time slots is greater than the first threshold;

The transceiving unit 1503 is further configured to send the PUSCH to the network device, where PUSCH transmission in each of the multiple time domain windows satisfies phase continuity.

In a possible design, the transceiver unit 1503 is further configured to send the PUSCH to the network device when the PUSCH transmission in the time domain unit does not meet the first condition, wherein in the time domain Intra-unit PUSCH transmission satisfies phase continuity.

In a possible design, when the processing unit 1502 determines a plurality of time domain windows, it is specifically configured to determine M time domain windows in the time domain unit, where M is a positive integer, and M is equal to the The number of frequency-domain offset values of the PUSCH; when there are at least N consecutive time-domain symbols in the first time-domain window of the M time-domain windows that are not used to transmit the PUSCH, the first time-domain window into at least two time-domain windows.

In a possible design, the first threshold value is determined according to the capability information of maintaining phase continuity, and the transceiving unit 1503 is further configured to send the capability information of maintaining phase continuity to the network device.

When the communication device 1500 is used to realize the function of the network device in the method embodiment:

The transceiver unit 1503 is configured to send scheduling information and first indication information of the physical uplink shared data channel PUSCH to the terminal device, the first indication information indicating that joint channel estimation is enabled;

The transceiving unit 1503 is further configured to receive the PUSCH from the terminal device;

The processing unit 1502 is further configured to perform joint channel estimation on the PUSCH in each of the multiple time domain windows.

In a possible design, the processing unit 1502 is further configured to perform joint channel estimation on the PUSCH in the time domain unit when the PUSCH transmission in the time domain unit does not meet the first condition.

In a possible design, the transceiving unit 1503 is further configured to receive capability information of maintaining phase continuity from the terminal device;

The processing unit 1502 is further configured to determine the first threshold according to the capability information of maintaining phase continuity.

More detailed descriptions about the processing unit 1502 and the transceiver unit 1503 can be directly obtained by referring to related descriptions in the method embodiments, and details are not repeated here.

As shown in FIG. 16 , a communication device 1600 includes a processor 1610 and an interface circuit 1620 . The processor 1610 and the interface circuit 1620 are coupled to each other. It can be understood that the interface circuit 1620 may be a transceiver or an input/output interface. Optionally, the communication device 1600 may further include a memory 1630 for storing instructions executed by the processor 1610 or storing input data required by the processor 1610 to execute the instructions or storing data generated by the processor 1610 after executing the instructions.

When the communication device 1600 is used to implement the communication methods applicable to terminal equipment or network equipment in the above method embodiments, the processor 1610 is used to implement the functions of the processing unit 1502, and the interface circuit 1620 is used to implement the functions of the transceiver unit 1503.

As another form of this embodiment, a computer-readable storage medium is provided, on which instructions are stored, and when the instructions are executed, the communication methods applicable to terminal devices or network devices in the above method embodiments can be executed.

As another form of this embodiment, a computer program product including instructions is provided, and when the instructions are executed, the communication method applicable to a terminal device or a network device in the foregoing method embodiments can be executed.

As another form of this embodiment, a chip is provided, and when the chip is running, the communication method applicable to a terminal device or a network device in the foregoing method embodiments can be executed.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

While preferred embodiments of the present application have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be interpreted to cover the preferred embodiment and all changes and modifications that fall within the scope of the application.

Apparently, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. In this way, if the modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and equivalent technologies, the present application also intends to include these modifications and variations.

Claims

A communication method, characterized in that, comprising:

Receiving scheduling information and first indication information of a physical uplink shared data channel PUSCH from a network device, where the first indication information indicates that joint channel estimation is enabled;

determining a time domain unit for transmitting the PUSCH according to the scheduling information of the PUSCH;

When the PUSCH transmission in the time domain unit satisfies the first condition, determine multiple time domain windows, wherein the multiple time domain windows are located in the time domain unit, and the first condition includes at least one of the following : The PUSCH transmission in the time domain unit does not satisfy phase continuity, or, the number of time domain symbols or time slots included in the time domain unit is greater than the first threshold;

Sending the PUSCH to the network device, where PUSCH transmission in each of the multiple time domain windows satisfies phase continuity.
The method according to claim 1, wherein determining that the PUSCH transmission in the time domain unit does not satisfy phase continuity comprises one or more of the following:

There are at least N consecutive time domain symbols in the time domain unit that are not used to transmit the PUSCH, where N is an integer greater than or equal to 1;

The frequency domain position of the PUSCH in the time domain unit changes;

The power variation of the PUSCH in the time domain unit is greater than a second threshold.
The method according to claim 1 or 2, wherein two consecutive time domain windows in the plurality of time domain windows satisfy one or more of the following conditions:

There are at least N consecutive time domain symbols between the two consecutive time domain windows that are not used to transmit the PUSCH, and the N is an integer greater than or equal to 1;

The frequency domain positions of the PUSCH transmissions of the two consecutive time domain windows are different;

The power difference between the PUSCHs of the two consecutive time domain windows is greater than the second threshold.
The method according to any one of claims 1-3, wherein the number of time-domain symbols or time slots included in each of the plurality of time-domain windows is less than or equal to that of the first gate limit.
The method according to claim 1 or 2, wherein said determining a plurality of time domain windows comprises:

M time-domain windows are determined in the time-domain unit, where M is a positive integer, and M is equal to the number of frequency-domain offset values of the PUSCH;

When at least N consecutive time domain symbols in the first time domain window among the M time domain windows are not used for transmitting the PUSCH, divide the first time domain window into at least two time domain windows.
The method according to any one of claims 1-5, wherein the first threshold value is determined according to capability information for maintaining phase continuity, and the method further comprises:

Sending the capability information of maintaining phase continuity to the network device.
A communication method, characterized in that, comprising:

Sending scheduling information and first indication information of the physical uplink shared data channel PUSCH to the terminal device, where the first indication information indicates that joint channel estimation is enabled;

determining a time domain unit for transmitting the PUSCH according to the scheduling information of the PUSCH;

When the PUSCH transmission in the time domain unit satisfies the first condition, determine multiple time domain windows, wherein the multiple time domain windows are located in the time domain unit, and the first condition includes at least one of the following : The PUSCH transmission in the time domain unit does not satisfy phase continuity, or, the number of time domain symbols or time slots included in the time domain unit is greater than the first threshold;

receiving the PUSCH from the terminal device, and performing joint channel estimation on the PUSCH in each of the multiple time domain windows.
The method according to claim 7, wherein determining that the PUSCH transmission in the time domain unit does not satisfy phase continuity comprises one or more of the following:

There are at least N consecutive time domain symbols in the time domain unit that are not used to transmit the PUSCH, where N is an integer greater than or equal to 1;

The frequency domain position of the PUSCH in the time domain unit changes;

The power variation of the PUSCH in the time domain unit is greater than a second threshold.
The method according to claim 7 or 8, wherein two consecutive time domain windows in the plurality of time domain windows satisfy one or more of the following conditions:

There are at least N consecutive time domain symbols between the two consecutive time domain windows that are not used to transmit the PUSCH, and the N is an integer greater than or equal to 1;

The frequency domain positions of the PUSCH transmissions of the two consecutive time domain windows are different;

The power difference between the PUSCHs of the two consecutive time domain windows is greater than the second threshold.
The method according to any one of claims 7-9, wherein the number of time-domain symbols or time slots included in each of the plurality of time-domain windows is less than or equal to that of the first gate limit.
The method according to claim 7 or 8, wherein said determining a plurality of time domain windows comprises:

M time-domain windows are determined in the time-domain unit, where M is a positive integer, and M is equal to the number of frequency-domain offset values of the PUSCH;

When at least N consecutive time domain symbols in the first time domain window among the M time domain windows are not used for transmitting the PUSCH, divide the first time domain window into at least two time domain windows.
The method according to any one of claims 7-11, further comprising:

receiving capability information from the terminal equipment to maintain phase continuity;

The first threshold value is determined according to the capability information of maintaining phase continuity.
A communication device, characterized in that the device includes:

A transceiver unit, configured to receive scheduling information and first indication information of the physical uplink shared data channel PUSCH from the network device, the first indication information indicating that joint channel estimation is enabled;

A processing unit, configured to determine a time domain unit for transmitting the PUSCH according to the scheduling information of the PUSCH; and when the PUSCH transmission in the time domain unit satisfies a first condition, determine a plurality of time domain windows, wherein, The plurality of time domain windows are located in the time domain unit, and the first condition includes at least one of the following: the PUSCH transmission in the time domain unit does not satisfy phase continuity, or, the time domain unit included in the time domain unit The number of field symbols or time slots is greater than the first threshold;

The transceiver unit is further configured to send the PUSCH to the network device, wherein PUSCH transmission in each of the multiple time domain windows satisfies phase continuity.
The communication device according to claim 13, wherein determining that the PUSCH transmission in the time domain unit does not satisfy phase continuity includes one or more of the following:

There are at least N consecutive time domain symbols in the time domain unit that are not used to transmit the PUSCH, where N is an integer greater than or equal to 1;

The frequency domain position of the PUSCH in the time domain unit changes;

The power variation of the PUSCH in the time domain unit is greater than a second threshold.
The communication device according to claim 13 or 14, wherein two consecutive time domain windows in the plurality of time domain windows satisfy one or more of the following conditions:

There are at least N consecutive time domain symbols between the two consecutive time domain windows that are not used to transmit the PUSCH, and the N is an integer greater than or equal to 1;

The frequency domain positions of the PUSCH transmissions of the two consecutive time domain windows are different;

The power difference between the PUSCHs of the two consecutive time domain windows is greater than the second threshold.
The communication device according to any one of claims 13-15, wherein the number of time domain symbols or time slots included in each of the plurality of time domain windows is less than or equal to the first threshold.
The communication device according to claim 13 or 14, wherein when the processing unit determines a plurality of time domain windows, it is specifically used to determine M time domain windows in the time domain unit, and the M is positive Integer, the M is equal to the number of frequency domain offset values of the PUSCH; when there are at least N consecutive time domain symbols in the first time domain window among the M time domain windows that are not used to transmit the PUSCH, the The first time domain window is divided into at least two time domain windows.
The communication device according to any one of claims 13-17, wherein the first threshold value is determined according to capability information for maintaining phase continuity, and the transceiver unit is further configured to send The capability information of maintaining phase continuity.
A communication device, characterized in that the device includes:

A transceiver unit, configured to send scheduling information and first indication information of a physical uplink shared data channel PUSCH to a terminal device, where the first indication information indicates that joint channel estimation is enabled;

A processing unit, configured to determine a time domain unit for transmitting the PUSCH according to the scheduling information of the PUSCH; and when the PUSCH transmission in the time domain unit satisfies a first condition, determine a plurality of time domain windows, wherein, The plurality of time domain windows are located in the time domain unit, and the first condition includes at least one of the following: the PUSCH transmission in the time domain unit does not satisfy phase continuity, or, the time domain unit included in the time domain unit The number of field symbols or time slots is greater than the first threshold;

The transceiver unit is further configured to receive the PUSCH from the terminal device;

The processing unit is further configured to perform joint channel estimation on the PUSCH in each of the multiple time domain windows.
The communication device according to claim 19, wherein determining that the PUSCH transmission in the time domain unit does not satisfy phase continuity includes one or more of the following:

There are at least N consecutive time domain symbols in the time domain unit that are not used to transmit the PUSCH, where N is an integer greater than or equal to 1;

The frequency domain position of the PUSCH in the time domain unit changes;

The power variation of the PUSCH in the time domain unit is greater than a second threshold.
The communication device according to claim 19 or 20, wherein two consecutive time domain windows in the plurality of time domain windows satisfy one or more of the following conditions:

There are at least N consecutive time domain symbols between the two consecutive time domain windows that are not used to transmit the PUSCH, and the N is an integer greater than or equal to 1;

The frequency domain positions of the PUSCH transmissions of the two consecutive time domain windows are different;

The power difference between the PUSCHs of the two consecutive time domain windows is greater than the second threshold.
The communication device according to any one of claims 19-21, wherein the number of time domain symbols or time slots included in each of the plurality of time domain windows is less than or equal to the first threshold.
The communication device according to claim 19 or 20, wherein when the processing unit determines a plurality of time domain windows, it is specifically used to determine M time domain windows in the time domain unit, and the M is positive Integer, the M is equal to the number of frequency domain offset values of the PUSCH; when there are at least N consecutive time domain symbols in the first time domain window among the M time domain windows that are not used to transmit the PUSCH, the The first time domain window is divided into at least two time domain windows.
The communication device according to any one of claims 19-23, wherein the transceiver unit is further configured to receive capability information from the terminal equipment to maintain phase continuity;

The processing unit is further configured to determine the first threshold value according to the capability information of maintaining phase continuity.
A communication device, characterized in that it includes a memory and a processor;

memory for storing computer programs;

A processor, configured to execute the computer program stored in the memory, so that the communication device executes the method according to any one of claims 1-6.
A communication device, characterized in that it includes a memory and a processor;

memory for storing computer programs;

A processor, configured to execute the computer program stored in the memory, so that the communication device executes the method according to any one of claims 7-12.
A computer-readable storage medium, characterized in that the computer-readable storage medium includes a computer program, and when the computer program is read and executed by one or more processors, it realizes claims 1-6 or 7-12 any one of the methods described.
A chip, characterized in that the chip is coupled with a memory for reading and executing program instructions stored in the memory to implement the method according to any one of claims 1-6 or 7-12.
A computer program product, characterized in that it includes computer programs or instructions, and when the computer programs or instructions are executed, the method according to any one of claims 1-6 or 7-12 is realized.