WO2020200193A1 - Data transmission method, apparatus and device - Google Patents

Abstract

Provided are a data transmission method, apparatus and device. The method comprises: a terminal device receiving first indication information from a network device, wherein the first indication information is used for indicating a first resource reserved by the terminal device; the terminal device determining, according to the first resource and a second resource, a third resource, wherein the second resource is a resource for sending uplink data by means of the terminal device, the third resource is a remaining resource, excluding an overlapping resource or a related resource of the overlapping resource, in the second resource, and the overlapping resource is a resource in which the first resource and the second resource overlap; and the terminal device sending, on the third resource, the uplink data. According to the method, a terminal device determines, by means of a reserved first resource and an allocated second resource, a third resource used for sending uplink data, thereby effectively utilizing a transmission resource and improving the efficiency and reliability of transmission.

Description

Data transmission method, device and equipment

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on April 4, 2019, the application number is 201910270185.0, and the invention title is "a data transmission method, device and equipment", the entire content of which is incorporated herein by reference Applying.

Technical field

This application relates to the field of communications, in particular to a data transmission method, device and equipment.

Background technique

In a wireless communication system, such as a new radio (NR) system, information exchanged between a user equipment (UE) and a base station (gNodeB, gNB) is carried through a physical channel. Among them, the data sent by the UE, that is, the uplink data, can usually be carried by the physical uplink shared channel (PUSCH); the control information sent by the UE, that is, the uplink control information, can usually be carried by the physical uplink control channel (physical uplink). uplink control channel (PUCCH) bearer. In addition, the UE may also send a sounding reference signal (SRS), and the gNB estimates the channel quality of the UE on different frequencies by receiving the SRS sent by the UE.

In wireless communication, for some deep coverage scenarios, such as cell edges, or basements, the path loss or penetration loss of wireless signal propagation is very serious, which may cause gNB or UE to fail to receive wireless signals correctly, so coverage enhancement is often required. Means, this is particularly important for uplink transmission, because the transmit power of the UE is often low, such as 23dBm, which is much lower than the transmit power of gNB. For example, for a gNB with a bandwidth of 20MHz, its transmit power can reach 46dBm. Among them, uplink transmission usually refers to the UE sending information to the gNB, and downlink transmission usually refers to the gNB sending information to the UE.

In order to improve the coverage performance of uplink transmission, a feasible enhancement method is repeated transmission. In the case of uplink transmission, the gNB configures the UE for a certain number of repeated transmissions so that the UE repeatedly sends data multiple times. Correspondingly, the gNB performs combined detection or demodulation on the data information, control information, or SRS sent by the UE multiple times, thereby improving the detection performance or demodulation performance, thereby achieving the effect of coverage enhancement.

At present, in NR, for uplink transmission, gNB instructs the UE to repeat the maximum number of retransmissions to 8 times. Among them, NR can support frequency hopping repeated transmission, see Figure 1a, and non-frequency hopping repeated transmission, see Figure 1b. Generally, one transmission is a transmission in one slot; while for multiple repeated transmissions, it is transmitted in multiple time slots, and the range of time-frequency resources used is the same in each time slot. For example, in uplink scheduling, referring to Figure 1b, gNB schedules the UE to transmit PUSCH by sending downlink control information (DCI). The DCI indicates that the time domain resources used by the UE for the first transmission include multiple consecutive ones in a time slot. Orthogonal frequency division multiplexing (OFDM) symbols, frequency domain resources include 4 consecutive resource blocks (resource blocks, RB), the UE will also use the same number and sum in a slot during subsequent repeated transmissions. Location of OFDM symbols and RB resources to transmit PUSCH.

In an ideal situation, although a certain degree of signal coverage enhancement can be obtained by repeating 8 transmissions, with a theoretical gain of 9dB, in practice, the signal may need to be enhanced by a greater degree, such as tens of dB, so it may be necessary to increase the repetitive transmission. The number of times reaches hundreds of times. However, because "the range of time-frequency resources used in each slot for repeated transmissions" in NR is the same, it will lead to "the resources that can be allocated to a UE for repeated transmissions are the resources available in each slot." "Intersection", which will greatly limit the resource scheduling of UE repeated uplink transmission.

Specifically, as shown in Figure 2, among UE1 to UE5, only UE1 needs to perform repeated transmissions. When the base station schedules UE1 to perform PUSCH repeated transmissions, it is necessary to ensure that the uplink resources of UE1 to repeatedly transmit PUSCHs are not the same as those of other UE2 to UE5. The resources overlap each other and cause interference, so the PUSCH resources available for UE1 cannot overlap with the transmission resources of other UEs in any time slot, which greatly limits the uplink transmission resources of UE1 and results in the effective uplink transmission of UE1. The transmission rate drops. In addition, the remaining idle resources are not fully utilized, resulting in low resource utilization.

Summary of the invention

The present application provides a data transmission method, device and equipment, which can improve the efficiency of repeated PUSCH transmission by the UE and the utilization rate of remaining idle resources.

Specifically, this application discloses the following technical solutions:

In the first aspect, an embodiment of the present application provides a data transmission method, the method includes: a terminal device receives first indication information from a network device, the first indication information is used to indicate a first resource reserved by the terminal device The terminal device determines a third resource according to the first resource and the second resource, the second resource is a resource used for the terminal device to send uplink data, and the third resource is among the second resources Excluding overlapping resources or remaining resources related to overlapping resources, the overlapping resources are resources where the first resource and the second resource overlap; the terminal device sends an uplink on the third resource data.

The network device configures the reserved resources in the uplink transmission process for the terminal device through the first indication information, so that the terminal device does not perform uplink transmission on the overlapping resources of the reserved first resource and the allocated second resource or the related resources of the overlapping resources , And the remaining resources of the second resource excluding overlapping resources or related resources can continue to be used for uplink transmission, thereby effectively using transmission resources, not only avoiding the overlap of transmission resources between terminal devices, but also The resource utilization rate is improved when the number of repeated transmissions in the uplink transmission process of the terminal equipment is large, and the transmission efficiency and reliability are improved.

With reference to the first aspect, in an implementation of the first aspect, the terminal device determining the third resource according to the first resource and the second resource includes: the terminal device according to the first resource and the second resource The resource and the transmission mode of the uplink data determine the third resource, wherein the transmission mode of the uplink data is a converted precoding transmission mode.

With reference to the first aspect, in another implementation manner of the first aspect, the terminal device determining the third resource according to the first resource and the second resource includes: the terminal device according to the first resource and the second resource The second resource, and the uplink data transmission mode determines the third resource, the third resource is the remaining resource in the second resource excluding the overlapping resources, and the uplink data transmission mode is non-transformed pre- Encoding transmission method. In the non-transformed precoding transmission mode, the terminal device can use non-contiguous frequency domain units to transmit uplink data, so all the remaining resources after removing the overlapping resources are used as the third resource for uplink transmission, thereby improving repeated transmission uplink Data resource utilization.

With reference to the first aspect, in yet another implementation manner of the first aspect, the overlapping resource includes at least one symbol in the time domain; wherein the related resource of the overlapping resource includes the at least one symbol in the time domain , Including all frequency domain resources corresponding to the at least one symbol in the frequency domain; the third resource is a remaining resource in the second resource excluding related resources of the overlapping resource.

With reference to the first aspect, in yet another implementation manner of the first aspect, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is The remaining resources of the second resource excluding related resources of overlapping resources, the related resources of the overlapping resources include all frequency domain units corresponding to the first symbol; wherein the fourth resource is on the first symbol There is a non-contiguous frequency domain unit, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit refers to the presence of a first frequency on the first symbol At least one frequency domain unit is spaced between the domain unit and the second frequency domain unit. All frequency-domain units on the time-domain symbols corresponding to overlapping resources are not used as resources for the terminal device to transmit uplink data, and all frequency-domain units corresponding to the remaining time-domain symbols are used to transmit uplink data, thereby ensuring that the The continuity of the frequency domain unit on any of the remaining symbols also enables the terminal equipment to ensure that the transmission power of each time domain symbol is consistent when using the third resource to transmit uplink data. In addition, the process of indicating the first resource and determining the third resource in this method is simple and clear, and easy to implement.

Optionally, the frequency domain unit includes a resource block or a resource block group.

With reference to the first aspect, in yet another implementation manner of the first aspect, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is The remaining resources of the second resource excluding related resources of overlapping resources, the related resources of the overlapping resources include other frequency domain units on the first symbol except the first continuous frequency domain unit; wherein, the fourth The resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after removing the overlapping resource from the second resource, and the non-contiguous frequency domain unit refers to the There is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the first symbol; the first continuous frequency domain unit is the continuous largest resource occupied by the first symbol in the fourth resource The frequency domain unit, or, is a continuous frequency domain unit with the highest or lowest frequency on the first symbol in the fourth resource.

On at least one time domain symbol corresponding to an overlapping resource, if a frequency domain unit on the time domain symbol has a non-contiguous frequency domain unit, the largest continuous frequency domain unit among them is reserved, or the highest or lowest continuous frequency domain unit is used In order to transmit uplink data, it not only ensures the continuity of frequency domain units on any time domain symbol, but also improves the transmission efficiency of uplink resources and the utilization of remaining resources.

Optionally, the first continuous frequency domain unit is one or more frequency domain units.

With reference to the first aspect, in yet another implementation manner of the first aspect, the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is The remaining resources of the second resources excluding related resources of overlapping resources, the related resources of the overlapping resources include the overlapping resources on the second symbol; wherein, the fourth resource is in the second symbol There is no non-contiguous frequency domain unit on the above, the fourth resource is the resource after removing the overlapping resources from the second resource, and the non-contiguous frequency domain unit refers to the presence of the first frequency on the second symbol At least one frequency domain unit is spaced between the domain unit and the second frequency domain unit.

On at least one time domain symbol corresponding to the overlapping resource, if the frequency domain unit on the time domain symbol is a continuous frequency domain unit, the continuous frequency domain unit is used to transmit uplink data, thereby increasing the uplink resources Transmission efficiency and utilization of remaining resources.

With reference to the first aspect, in yet another implementation manner of the first aspect, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain, where the first symbol is The time unit of is the first time unit; the third resource is the remaining resource excluding the related resources of the overlapping resource in the second resource, and the related resource of the overlapping resource includes the first symbol in the time domain The first time unit where it is located includes all frequency domain units corresponding to the first time unit in the frequency domain; wherein, the overlapping resource overlaps with the resource carrying the first reference signal in the first time unit, and /Or, the total number of symbols of the first symbol in the first time unit is greater than or equal to a first preset value, or the number of consecutive first symbols in the first time unit is greater than or equal to a second preset value.

Optionally, the first time unit is a time slot or a subframe.

When the resource carrying the first reference signal and the overlapping resource have an intersection, and/or the total number of symbols of the first symbol corresponding to the overlapping resource is greater than or equal to the first preset value, or consecutively in the first time unit When the number of symbols of the first symbol is greater than or equal to the second preset value, the first time unit where the first symbol is located is not used for uplink data to ensure that the first reference signal in the first time unit is Integrity, thereby ensuring the data demodulation performance in the first time unit, and avoiding the waste of energy consumption caused by the transmission of uplink data when the data in the first time unit cannot be correctly demodulated.

With reference to the first aspect, in yet another implementation manner of the first aspect, the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain, where the second symbol is The time unit of is the second time unit; the third resource is the remaining resource excluding the related resources of the overlapping resource in the second resource, and the related resource of the overlapping resource includes the second symbol in the frequency domain All corresponding frequency domain units; wherein, the overlapping resource does not overlap with the resource carrying the first reference signal in the second time unit; and/or, the total number of symbols of the second symbol in the second time unit Is less than the first preset value, or the maximum value of the number of consecutive second symbols in the second time unit is less than the second preset value.

Optionally, the first reference signal includes a demodulation reference signal DMRS or a sounding reference signal SRS.

This implementation ensures the integrity of the first reference signal in the second time unit, and makes the first reference signal available for channel estimation of one or more parts of the second time unit divided by the first resource, and then The demodulation performance of the data in the second time unit is guaranteed.

With reference to the first aspect, in yet another implementation manner of the first aspect, the terminal device is a device with enhanced coverage or a device that performs multiple transmissions, and/or the number of repeated transmissions performed by the terminal device is greater than a predetermined number of transmissions. Set the number of times.

In a second aspect, an embodiment of the present application provides a data transmission method. The method includes: a network device generates first indication information, where the first indication information is used to instruct a terminal device to reserve a first resource; The terminal device sends the first indication information; determines a third resource according to the first resource and the second resource, and receives the uplink data sent by the terminal device in the third resource. The second resource is a resource used for the terminal device to send uplink data, the third resource is a remaining resource in the second resource excluding overlapping resources or related resources of the overlapping resources, the overlapping resources Is a resource where the first resource and the second resource overlap.

With reference to the second aspect, in an implementation manner of the second aspect, the network device determining the third resource according to the first resource and the second resource includes: the network device according to the first resource and the second resource The resource and the transmission mode of the uplink data determine the third resource, wherein the transmission mode of the uplink data is a converted precoding transmission mode.

With reference to the second aspect, in another implementation manner of the second aspect, the network device determining the third resource according to the first resource and the second resource includes: the network device according to the first resource and the second resource The second resource, and the uplink data transmission mode determines the third resource, the third resource is the remaining resource in the second resource excluding the overlapping resources, and the uplink data transmission mode is non-transformed pre- Encoding transmission method.

With reference to the second aspect, in another implementation manner of the second aspect, the overlapping resource includes at least one symbol in the time domain; wherein the related resource of the overlapping resource includes the at least one symbol in the time domain , Including all frequency domain resources corresponding to the at least one symbol in the frequency domain; the third resource is a remaining resource in the second resource excluding related resources of the overlapping resource.

With reference to the second aspect, in yet another implementation manner of the second aspect, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is The remaining resources of the second resource excluding related resources of overlapping resources, the related resources of the overlapping resources include all frequency domain units corresponding to the first symbol; wherein the fourth resource is on the first symbol There is a non-contiguous frequency domain unit, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit refers to the presence of a first frequency on the first symbol At least one frequency domain unit is spaced between the domain unit and the second frequency domain unit.

Optionally, the frequency domain unit is one or more RBs.

With reference to the second aspect, in yet another implementation manner of the second aspect, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is The remaining resources of the second resource excluding related resources of overlapping resources, the related resources of the overlapping resources include other frequency domain units on the first symbol except the first continuous frequency domain unit; wherein, the fourth The resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after removing the overlapping resource from the second resource, and the non-contiguous frequency domain unit refers to the There is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the first symbol; the first continuous frequency domain unit is the continuous largest resource occupied by the first symbol in the fourth resource The frequency domain unit, or, is a continuous frequency domain unit with the highest or lowest frequency on the first symbol in the fourth resource.

With reference to the second aspect, in yet another implementation manner of the second aspect, the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is The remaining resources of the second resources excluding related resources of overlapping resources, the related resources of the overlapping resources include the overlapping resources on the second symbol; wherein, the fourth resource is in the second symbol There is no non-contiguous frequency domain unit on the above, the fourth resource is the resource after removing the overlapping resources from the second resource, and the non-contiguous frequency domain unit refers to the presence of the first frequency on the second symbol At least one frequency domain unit is spaced between the domain unit and the second frequency domain unit.

With reference to the second aspect, in yet another implementation manner of the second aspect, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain, where the first symbol is located The time unit of is the first time unit; the third resource is the remaining resource in the second resource excluding the related resources of the overlapping resource, and the related resource of the overlapping resource includes the first symbol in the time domain The first time unit where it is located includes all frequency domain units corresponding to the first time unit in the frequency domain; wherein, the overlapping resource overlaps with the resource carrying the first reference signal in the first time unit, and /Or, the total number of symbols of the first symbol in the first time unit is greater than or equal to a first preset value, or the number of consecutive first symbols in the first time unit is greater than or equal to a second preset value.

With reference to the second aspect, in yet another implementation manner of the second aspect, the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain, where the second symbol is located The time unit of is the second time unit; the third resource is the remaining resource of the second resource excluding the related resources of the overlapping resource, and the related resource of the overlapping resource includes the second symbol in the frequency domain All corresponding frequency domain units; wherein, the overlapping resource does not overlap with the resource carrying the first reference signal in the second time unit; and/or, the total number of symbols of the second symbol in the second time unit Is less than the first preset value, or the maximum value of the number of consecutive second symbols in the second time unit is less than the second preset value.

With reference to the second aspect, in yet another implementation manner of the second aspect, the terminal device is a device with enhanced coverage or a device that performs multiple transmissions, and/or the number of repeated transmissions performed by the terminal device is greater than the predetermined number of transmissions. Set the number of times.

In a third aspect, embodiments of the present application provide a data transmission device, which is configured to implement the foregoing first aspect and the data transmission method in various implementation manners of the first aspect. The data transmission device is a terminal device or a device integrated in the terminal device.

Optionally, the device includes at least one functional unit or module, and further, the at least one functional unit is a receiving unit, a processing unit, or a sending unit.

In the fourth aspect, the embodiments of the present application also provide another data transmission device, which is used to implement the foregoing second aspect and the data transmission method in various implementation manners of the second aspect. The data transmission device is a network device or a device integrated in the network device.

In a fifth aspect, an embodiment of the present application also provides a communication device, including a processor and a memory, the processor is coupled to the memory, and the memory is used to store instructions; the processor is used to call the instructions to make The communication device executes the foregoing first aspect and the data transmission method in the various implementations of the first aspect, or the processor is used to call the instruction to make the communication device execute the foregoing second aspect and various implementations of the second aspect The data transmission method in the mode.

Optionally, the communication device further includes a transceiver, which is used to receive or send messages and data from the peer device.

Optionally, the communication device is the device described in the third aspect or the fourth aspect. Further, when the network device is used as the device in the third aspect, it may be a terminal device, such as a UE. When the network device is used as the device in the fourth aspect, it may be a network device, such as a base station or an access point.

In a sixth aspect, the embodiments of the present application also provide a computer-readable storage medium. The storage medium stores instructions. When the instructions run on a computer or a processor, they are used to execute the aforementioned first aspect and the first aspect. On the one hand, methods in various implementation manners, or used to execute the foregoing second aspect and methods in various implementation manners of the second aspect.

In a seventh aspect, the embodiments of the present application also provide a computer program product. The computer program product includes computer instructions. When the instructions are executed by a computer or a processor, the foregoing first aspect and various aspects of the first aspect can be implemented. The method in the implementation manner, or the method in the foregoing second aspect and various implementation manners of the second aspect.

In an eighth aspect, an embodiment of the present application also provides a chip system, the chip system includes a processor and an interface circuit, the interface circuit is coupled with the processor, and the processor is used to execute a computer program or instruction to Implement the foregoing first aspect and the methods in the various implementations of the first aspect, or implement the foregoing second aspect and the methods in the various implementations of the second aspect; wherein the interface circuit is used to communicate with other than the chip system Other modules communicate.

In a ninth aspect, an embodiment of the present application also provides a communication system, including at least two communication devices, the at least two communication devices including at least one first communication device and at least one second communication device, and the first communication device The device may be the device described in the third aspect, used to implement the data transmission method in the first aspect and various implementation manners of the first aspect; the second communication device may be the device described in the fourth aspect, used to implement The second aspect and the data transmission method in various implementations of the second aspect.

Optionally, the first communication device is a terminal device, and the second communication device is a network device.

In the method provided in this embodiment and the method provided in this embodiment, the network device uses the first indication information to configure reserved resources for the terminal device in the uplink transmission process, so that the terminal device can exchange the reserved first resource with the allocated second resource. No uplink transmission is performed on overlapping resources or related resources of overlapping resources, and the remaining resources in the second resource excluding overlapping resources or related resources of overlapping resources can continue to be used for uplink transmission, thereby effectively using transmission resources. This not only avoids the overlapping of transmission resources between terminal devices, but also improves the resource utilization when the number of repeated transmissions in the uplink transmission process of the terminal device is large, and the transmission efficiency and reliability are improved.

Description of the drawings

Figure 1a is a schematic diagram of a UE performing frequency hopping repeated transmission provided by this application;

FIG. 1b is a schematic diagram of a UE performing non-frequency hopping repeated transmission provided by this application;

FIG. 2 is a schematic diagram of multiple UEs performing uplink transmission provided by this application;

FIG. 3 is a schematic diagram of a scenario of a base station and multiple UEs according to an embodiment of the application;

FIG. 4 is a flowchart of a data transmission method provided by an embodiment of this application;

FIG. 5 is a schematic diagram of indicating a reserved first resource according to an embodiment of this application;

FIG. 6 is a schematic diagram of a process of determining a third resource provided by an embodiment of this application;

FIG. 7a is a schematic diagram of a process of determining a third resource provided by an embodiment of this application;

FIG. 7b is a schematic diagram of another process of determining a third resource provided by an embodiment of this application;

FIG. 7c is a schematic diagram of another process of determining a third resource provided by an embodiment of this application;

FIG. 7d is a schematic diagram of yet another process of determining a third resource provided by an embodiment of this application;

FIG. 7e is a schematic diagram of another process of determining a third resource provided by an embodiment of this application;

FIG. 7f is a schematic diagram of another process of determining a third resource provided by an embodiment of this application;

FIG. 7g is a schematic diagram of another process of determining a third resource provided by an embodiment of this application;

FIG. 7h is a schematic diagram of yet another process of determining a third resource provided by an embodiment of this application;

FIG. 7i is a schematic diagram of another process of determining a third resource provided by an embodiment of this application;

FIG. 7j is a schematic diagram of another process of determining a third resource provided by an embodiment of this application;

FIG. 7k is a schematic diagram of another process of determining a third resource provided by an embodiment of this application;

FIG. 71 is a schematic diagram of yet another process of determining a third resource provided by an embodiment of this application;

FIG. 7m is a schematic diagram of yet another process of determining a third resource provided by an embodiment of this application;

FIG. 8a is a schematic diagram of indicating a first resource through a bitmap according to an embodiment of the application;

FIG. 8b is another schematic diagram of indicating a first resource through a bitmap according to an embodiment of this application;

FIG. 9 is a flowchart of another data transmission method provided by an embodiment of the application;

FIG. 10 is a schematic structural diagram of a data transmission device provided by an embodiment of this application;

FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of this application.

detailed description

In order to enable those skilled in the art to better understand the technical solutions in the embodiments of this application, and to make the above-mentioned objectives, features and advantages of the embodiments of this application more obvious and understandable, the following describes the technology in the embodiments of this application with reference to the accompanying drawings. The plan is described in further detail.

Before describing the technical solutions of the embodiments of the present application, first, the application scenarios of the embodiments of the present application will be described with reference to the drawings.

The technical solution of this application can be applied to a communication system composed of at least one network device and at least one terminal device, such as a Long Term Evolution (LTE) system, or the 5th generation mobile communication system (The 5th generation, 5G), In addition, it can also be applied to future communication systems, such as the sixth-generation and seventh-generation mobile communication systems. As long as the sending end of the communication system sends information indicating transmission resources, another entity receiving end receives the information and uses it. It determines the transmission resource.

As shown in FIG. 3, in a communication system, a network device and at least one terminal device are included. The network device may be a base station (BS). Further, the base station may be a global system for mobile communications (global mobile communication system, BS). The base station (BTS) in the system for mobile communication (GSM) or code division multiple access (CDMA), or the base station (wideband-CDMA, WCDMA) in the wideband code division multiple access (CDMA) NodeB), or evolved NodeB (eNB/e-NodeB) in LTE, or evolved base station (next generation eNB, ng-eNB) in LTE, or base station (gNB) in NR Or, the base station in the future mobile communication system or the access node in the wireless fidelity (wireless fidelity, WiFi) system, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. In this application, the network device may be a wireless access network device.

The terminal device in the embodiment of the present application may be a device that provides services and/or data connectivity to users, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem, such as a wireless terminal.

Further, the wireless terminal may communicate with one or more nodes via a radio access network (RAN), and the wireless terminal may be a mobile terminal, such as a mobile phone (or called a "cellular" phone) And a computer with a mobile terminal, for example, can be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device, which exchanges language and/or data with the wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (personal digital assistants, etc.) PDA) and other equipment. The wireless terminal may also be a subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), access point (access point), remote station Terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), user equipment (user device) or user equipment (user equipment, UE), etc., embodiments of this application The specific technology and specific device form adopted by the terminal device are not limited.

In this embodiment, as shown in FIG. 3, only 6 types of UE are exemplified, namely: UE1 vehicle, UE2 router, UE3 gas station, UE4 coffee machine, UE5 mobile phone and UE6 printer. Among them, the base station and UE1 to UE6 form a communication system. In this communication system, UE1 to UE6 can send uplink data to the base station, and the base station needs to receive the uplink data sent by UE1 to UE6. In addition, UE4 to UE6 can also form a communication system. In this communication system, the base station can send downlink information to UE1, UE2, UE3, UE5, etc.; UE5 can also send downlink information to UE4 and UE6.

This embodiment provides a data transmission method, which is used to improve the efficiency of repeated uplink data transmission by the UE and the utilization of remaining idle resources while ensuring that the range of time-frequency resources allocated for each repeated uplink transmission of the UE is the same.

Before introducing the technical solution of the present application, two methods of uplink (UL) transmission of the UE in the NR system are briefly introduced.

The first transmission method: non-conversion precoding

In the NR protocol, the "non-transformed precoding" transmission method is based on the transmission method of cyclic prefix-OFDM (CP-OFDM). This transmission method can also be understood as a transmission method when transform precoding (transform precoding) is not used, or a transmission method when transform precoding is not enabled (English: transform precoding is not applied/disabled). For this transmission mode, there is no restriction on whether the transmission resources used by the UE are continuous in the frequency domain. In other words, the UE can use continuous resource units for transmission in the frequency domain, or use non-contiguous resource units for transmission. Wherein, the non-contiguous resource unit refers to at least one resource unit existing or separated between two resource units. Wherein, the resource unit may be a resource block (resource block, RB) in the frequency domain, or a resource block group (resource block group, RBG) composed of multiple consecutive RBs, or a resource particle (resource block). element, RE) or resource element group (REG).

The second transmission method: conversion precoding

In the NR protocol, the "transformed precoding" transmission method is based on the discrete Fourier transform-spread-orthogonal frequency division multiplexing (discrete Fourier transform-spread-OFDM, DFT-s-OFDM) transmission method. The transmission mode can be understood as the transmission mode when the conversion precoding is used, or the transmission mode when the conversion precoding is enabled (English: transform precoding is applied/enabled). This transmission mode requires that the transmission resource units used by the UE be continuous in the frequency domain. For example, for PUSCH transmission, since the transmission resource unit used is usually RB or RBG as the granularity (or unit) in the frequency domain, the transmission of PUSCH in this transmission mode needs to use one RB/RBG or multiple consecutive RB/RBG.

The following embodiments describe in detail the technical solutions provided by this application.

The method provided in the embodiment of the present application can be used for determining the transmission resource used by the terminal device when it performs uplink repeated transmission. Specifically, the method includes: the network device instructs the first resource reserved by the terminal device, where the first resource is a resource not used by the terminal device in uplink transmission; and then the terminal device determines according to the first resource and the allocated second resource The third resource used for actual transmission in uplink transmission. The uplink transmission resource determined by this method uses more idle resources than the existing method, so more uplink data can be transmitted and the utilization of uplink resources is improved. , Or reduce the coding rate while keeping the transmission rate unchanged, and improve the transmission reliability.

Further, as shown in FIG. 4, the method in this embodiment includes:

Step 101: A terminal device receives first indication information from a network device, where the first indication information is used to indicate a first resource reserved by the terminal device.

Optionally, the first indication information may be high-level signaling, such as radio resource control (radio resource control, RRC) signaling.

Optionally, the first indication information may be indicated by downlink control information (DCI). For example, the network device configures multiple first resources to the terminal device through high-level signaling, and further indicates one of the first resources to the terminal device through DCI.

Optionally, as shown in FIG. 5, the reserved first resource indicated by the first indication information may be a resource block symbol (RB-symbol) level resource. For example, the reserved resource indication method may be multiplexed with general downlink (DL). ) Indicates the RB-symbol level reserved resources, or the first indication information may only indicate time domain symbol information, and the first resource may be all frequency domain resources corresponding to the time domain symbol indicated by the first indication information, or, The resources indicated by the first indication information may also be RE-level reserved resources, or may also be other forms of reserved resources, for example, may be the union of multiple resource block symbol-level reserved resources, which is not limited in this application.

Optionally, the first indication information to indicate the first resource may be implemented in a bitmap mode, and the specific process is described in detail in the following embodiments.

Step 102: The terminal device determines a third resource according to the first resource and the second resource, the second resource is a resource for the terminal device to send uplink data, and the third resource is among the second resources. Excluding overlapping resources or remaining resources related to overlapping resources, the overlapping resources are resources where the first resource and the second resource overlap.

Wherein, the second resource may be a resource indicated by a network device sent to each terminal device in a broadcast manner, or a resource indicated by a system message, or a resource allocated for a terminal device indicated by DCI, or, It may also be a resource configured by a network device in a semi-static configuration for a terminal device in advance, such as a configured authorized (configured grant) transmission resource, or a grant free transmission resource. This embodiment obtains the second resource The method is not limited.

Further, the resource allocation indicated by the DCI refers to the resource indicated by the resource allocation indication information carried in the DCI in the uplink transmission scheduled by the DCI. It represents the transmission resource used by the UE without considering the reserved first resource; similarly, the pre-configured allocated resources are similar, and the difference between it and the allocated resources of DCI is that it does not require network equipment to pass DCI dynamically indicates that its transmission resources are semi-statically configured, that is, configured through RRC high-level signaling, and are also transmission resources used without considering the reserved first resource.

Step 103: The terminal device sends uplink data on the third resource.

In addition, before step 102 of the method, the method may further include: the terminal device determines whether the reserved first resource is valid, and executes the steps 102 and 103 when the first resource is valid. That is, when the first resource becomes effective, the terminal device transmits on the third resource determined according to the first resource and the second resource; when the first resource does not become effective, the terminal device only determines the third resource according to the second resource and transmits The uplink data is transmitted on the third resource. At this time, the size of the third resource is the same as the size of the second resource.

Specifically, there are the following judgment methods for judging whether the first resource is valid:

The first judging method: judging whether the terminal device is a device with enhanced coverage or a device that performs multiple transmissions.

The second judgment method: judge whether the number of repeated transmissions is greater than the preset number;

The third judging method: judging whether the terminal device is a device with enhanced coverage or a device that performs multiple transmissions, and whether the number of repeated transmissions is greater than a preset number.

Further, in a specific implementation, for the first judgment method: the base station informs the UE through RRC signaling to set or instruct the UE to be a UE of the first type, and the UE of the first type is a UE with enhanced coverage, or a potential need A UE that repeatedly transmits uplink data more often. And it is pre-defined that for the first type of UE, the configured first indication information is all valid. Specifically, an implementation manner is that the base station sends second indication information to the UE, where the second indication information is used to indicate that the UE is a UE with enhanced coverage, or a UE that needs to repeatedly transmit uplink data more frequently.

The second judgment method is that the first resource takes effect when the base station indicates that the number of repeated transmissions of the uplink data of the UE is greater than the preset number (set the preset number as X, X≥1 and a positive integer). Specifically, in an implementation manner, the base station sends third indication information to the UE, where the third indication information is used to indicate the number of repeated transmissions by the UE, where the third indication information may be carried in the DCI, and let the number of repeated transmissions Y is a positive integer. When Y≤X, the first resource is invalid, that is, the first resource is not reserved. For example, when Y=X=1, the number of repeated transmissions is only once, that is, there is no repeated transmission. Take effect. Since the required transmission time interval is short when the number of repeated transmissions is small, the base station can anticipate resource usage in a short period of time, so it can indicate the size of the second resource only through dynamic signaling (for example, DCI), thereby eliminating the need to configure the second resource. One indication information indicates the first resource, and the configuration method is more free and flexible.

Optionally, X=8. At present, the NR protocol supports a maximum number of repeated transmissions of 8. It can be seen that when the number of repeated transmissions does not exceed 8, there is no need to indicate the first resource; when the number of repeated transmissions Y is greater than or equal to the preset number of X, X=8, because in the subsequent time slot The uncertainty of resource allocation is greater, and the base station cannot determine which symbols of which time slots must be available for a certain terminal device in a long time in the future. Therefore, the first indication information is required to indicate the first resource.

Optionally, the preset number of times may also be another value, or a value pre-specified by the protocol or configured by the base station.

For the third judgment method, similar to the above-mentioned "First judgment method" and "Second judgment method", if and only if the UE is a first type UE and the number of repeated transmissions is greater than the preset number, that is, when Y>X , The reserved first resource takes effect. Otherwise, the first resource does not take effect. For the specific implementation process of the "third judgment method", please refer to the related descriptions of the above-mentioned "first judgment method" and "second judgment method". Go into details.

In the method provided in this embodiment, the network device configures the reserved first resource for the terminal device through the first indication information, so that the terminal device determines the third resource for uplink transmission through the reserved first resource and the allocated second resource, so The third resource is the remaining resources in the second resource except for overlapping resources or overlapping resource-related resources. Uplink data transmission on the remaining resources effectively utilizes the transmission resources, and not only avoids mutual transmission resources between terminal devices. Overlapping, and also improves the resource utilization when the number of repeated transmissions in the uplink transmission process of the terminal equipment is large, and improves the transmission efficiency and reliability.

The specific process of determining the third resource according to the first resource and the second resource in the foregoing step 102 will be described below. According to the first resource and the second resource, there may be multiple specific implementation methods for determining the third resource, which will be introduced separately according to different situations.

For the convenience of description, firstly, the representation of each resource in this embodiment will be explained. The resources involved in this application, such as the first resource, the second resource, and the third resource, are represented by OFDM symbols in the time domain; Frequency domain unit, such as RB. As shown in Figure 5, for a transmission resource that includes a slot in the time domain, it is illustrated by taking 14 OFDM symbols in the time domain and up to 7 RBs in the frequency domain as an example. The index numbers (referred to as index) from the 1st OFDM symbol to the 14th OFDM symbol on the right are 0, 1, 2, ..., 13; the first RB to the 7th from top to bottom in the frequency domain The indexes of RB are 1, 2, 3,...,7 in sequence. Fig. 5 also shows a possible schematic diagram of the first resource, where the first resource includes an OFDM symbol with index 7 in the time domain, and the resource in the frequency domain includes three RBs with indexes 3 to 5.

In step 102, the specific implementation manners for the terminal device to determine the third resource according to the first resource and the second resource can be divided into the following types:

In the first possible implementation manner, the terminal device determines the third resource according to the first resource and the second resource, wherein the overlapping resource between the first resource and the second resource is an empty set, that is, the first resource If there is no overlap with the second resource, it is determined that the third resource is the remaining resource after the empty set is removed from the second resource, and the remaining resource is the second resource, that is, the size of the third resource is The size of the second resource is the same. As shown in Figure 6, the first resource includes an OFDM symbol with index 7 in the time domain and an RB with index 7 in the frequency domain; the second resource includes the entire time slot in the time domain, that is, the index is 0 to 13. There are a total of 14 OFDM symbols in the frequency domain, including all RBs with indexes 2 to 6 in the frequency domain; the intersection of the first resource and the second resource is an empty set, so the size of the third resource is the same as the size of the second resource, that is The third resource includes 14 OFDM symbols in the time domain, and the resource in the frequency domain includes all RBs with indexes 2 to 6.

In the second possible implementation manner, the terminal device determines the third resource according to the first resource, the second resource, and the transmission mode of uplink data, where the uplink transmission mode is a non-transformed precoding transmission mode.

In a third possible implementation manner, the terminal device determines the third resource according to the first resource, the second resource, and the transmission mode of the uplink data, where the uplink transmission mode is a transmission mode of precoding conversion.

In a fourth possible implementation manner, the terminal device determines the third resource according to the first resource and the second resource. Specifically, the terminal device does not determine the third resource according to the uplink data transmission mode, but only determines the third resource according to the first resource and the second resource.

Further, in the third or fourth possible implementation manner, the terminal device also removes the first resource according to the overlap between the resource used to carry the reference signal in the second resource and the first resource, and/or the second resource removes the first resource. The time domain continuity characteristics of the remaining resources of the resource are determined, the third resource is determined, and the reference signal includes a demodulation reference signal (DMRS) and/or a sounding reference signal (SRS).

Various situations of the second to fourth possible implementation manners are described in detail below.

First, the situations included in the second possible implementation manner are explained. Specifically, one possible situation is as follows:

Situation a

When the uplink data transmission mode is the non-transformed precoding transmission mode, and there are overlapping resources between the first resource and the second resource, the third resource is the second resource except the overlapping resource Remaining resources. Because in the non-transformed precoding transmission mode, the terminal device can use non-contiguous frequency domain units for transmission, so when determining the uplink transmission resource, it can reserve some frequency domain units on a certain time domain symbol, thereby improving the transmission resource. Utilization rate.

For example, as shown in FIG. 7a, the first indication information indicates that the first resource reserved by the UE includes an OFDM symbol with index 7 in the time domain and three RBs with indices 3 to 5 in the frequency domain; the second resource is in the time domain. The domain includes the entire time slot, that is, a total of 14 OFDM symbols with indexes 0 to 13, and all RBs with indexes 2 to 6 in the frequency domain. The overlapping resources include OFDM symbols with index 7 in the time domain. Symbol, including three RBs with indexes 3 to 5 in the frequency domain, that is, the size of the overlapping resource is the same as the size of the first resource, then the third resource is determined to be the second resource except for The remaining resources after the first resource, the determined third resource includes 14 OFDM symbols in the time domain, wherein the corresponding frequency domain resources on the 13 OFDM symbols with indexes 0 to 6, 8 to 13 include the indexes of For all RBs from 2 to 6, the corresponding frequency domain resources on the OFDM symbol with index 7 include two RBs with index 2 and index 6.

The method in this embodiment uses the feature that the resource units transmitted in the non-transformed precoding transmission mode can be discontinuous in the frequency domain, and uses the remaining resources of the second resource to remove the overlapping resources for uplink transmission, thereby maximizing The remaining resources are used, which effectively improves the utilization of uplink resources.

Next, various situations included in the third possible implementation manner are described. In this implementation manner, the terminal device determines the third resource according to the first resource and the second resource, and the uplink data transmission mode is a conversion precoding mode; specifically, possible situations are as follows:

Situation b

There is an overlapping resource between the first resource and the second resource, the overlapping resource includes at least one symbol in the time domain and at least one frequency domain unit in the frequency domain, and the third resource is the second resource The remaining resources except for the related resources of the overlapping resources, the related resources of the overlapping resources include the at least one symbol in the time domain and all frequency domain units corresponding to the at least one symbol in the frequency domain.

For example, as shown in FIG. 7b, the first indication information indicates that the first resource includes an OFDM symbol with an index of 7 in the time domain and two RBs with an index of 5 and 6 in the frequency domain. The second resource includes the entire time slot in the time domain, that is, a total of 14 OFDM symbols with indexes 0 to 13, and all RBs with indexes 2 to 6 in the frequency domain. The size of the overlapping resource is the same as the size of the first resource, it is determined that the third resource is the remaining resource in the second resource after removing the related resources of the overlapping resource, and the related resources of the overlapping resource In the time domain, the OFDM symbols with index 7 are included, and in the frequency domain, the RBs with indexes 2 to 6 are included; the determined third resource includes a total of 13 indexes of 0 to 6, 8 to 13 in the time domain. The OFDM symbol includes all RBs with indexes 2 to 6 in the frequency domain.

In the method provided in this embodiment, all frequency domain units on time domain symbols corresponding to overlapping resources are not used as resources for the terminal device to transmit uplink data, and all frequency domain units corresponding to the remaining time domain symbols are used In order to transmit uplink data, the continuity of the frequency domain unit on any remaining time domain symbol is ensured, and the terminal device also ensures that the transmission power of each time domain symbol is consistent when using the third resource to transmit uplink data. In addition, the process of indicating the first resource and determining the third resource in this method is simple and clear, and easy to implement.

Situation c

There is an overlapping resource between the first resource and the second resource, the overlapping resource includes at least one first symbol in the time domain, and the resource after removing the overlapping resource from the second resource is the fourth resource, so When the fourth resource has a non-contiguous frequency domain unit on the first symbol, the non-contiguous frequency domain unit refers to the presence of a first frequency domain unit and a second frequency domain unit on the first symbol At least one frequency domain unit is separated from each other. At this time, it is determined that the third resource is the remaining resource after removing related resources of overlapping resources in the second resource, and the related resources of the overlapping resources include all the resources corresponding to the first symbol. Frequency domain unit.

For example, as shown in FIG. 7c, the first indication information indicates that the first resource includes an OFDM symbol with index 7 in the time domain and two RBs with index 3 and index 5 in the frequency domain; the second resource is in time The domain includes the entire time slot, that is, a total of 14 OFDM symbols with indexes 0 to 13, and all RBs with indexes 2 to 6 in the frequency domain. The size of the overlapping resource is the same as the size of the first resource, and the fourth resource is the remaining resource after removing the overlapping resource from the second resource, and the remaining resource includes 14 OFDM symbols in the time domain, where On symbols other than the OFDM symbol with index 7, the corresponding frequency domain unit includes all RBs with indexes 2 to 6; on the OFDM symbol with index 7, the corresponding frequency domain unit includes indexes 2, 4 And three RBs of 6. Among them, suppose that the RB with index 2 in the frequency domain is the first frequency domain unit, the RB with index 4 is the second frequency domain unit, and there is one RB between the first frequency domain unit and the second frequency domain unit, that is, the index The RB of 3 belongs to the non-contiguous frequency domain unit, so the relevant resources of the overlapping resource are all RBs corresponding to the OFDM symbol with index 7, and the third resource is the second resource except the OFDM with index 7 The remaining resources after all the RBs on the symbol, that is, the third resource includes a total of 13 OFDM symbols with indexes 0 to 6, 8 to 13 in the time domain, and all RBs with indexes 2 to 6 in the frequency domain.

In the method provided in this embodiment, all frequency domain units on time domain symbols corresponding to overlapping resources are not used as resources for the terminal device to transmit uplink data, and all frequency domain units corresponding to the remaining time domain symbols are used for The uplink data is transmitted, so as to ensure the continuity of the frequency domain unit on any remaining time domain symbol, and also enable the terminal device to ensure that the transmission power of each time domain symbol is consistent when using the third resource to transmit the uplink data. In addition, the process of indicating the first resource and determining the third resource in this method is simple and clear, and easy to implement.

Situation d

There is an overlapping resource between the first resource and the second resource. The overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain. The second resource removes the overlap. The resource after overlapping resources is the fourth resource, and when the fourth resource has a non-contiguous frequency domain unit on the first symbol, the non-contiguous frequency domain unit refers to the presence on the first symbol At least one frequency domain unit is spaced between the first frequency domain unit and the second frequency domain unit; at this time, the third resource is the remaining resource in the second resource excluding the related resources of the overlapping resource, and the overlapping Related resources of the resource include other frequency domain units on the first symbol except for the first continuous frequency domain unit.

Wherein, the first continuous frequency domain unit is:

(1) The continuous frequency domain unit occupying the largest resource on the first symbol in the fourth resource; or,

(2) The continuous frequency domain unit with the highest or lowest frequency on the first symbol in the fourth resource.

For example, when the first continuous frequency domain unit is the above-mentioned case (1), as shown in FIG. 7d, the first indication information indicates that the first resource includes an OFDM symbol with an index of 7 in the time domain. The domain includes two RBs with an index of 3 and an index of 5; the second resource includes the entire time slot in the time domain, that is, a total of 14 OFDM symbols with indexes from 0 to 13, and the frequency domain includes indexes from 2 to 7 The size of the overlapping resource is the same as the size of the first resource, the fourth resource is the remaining resource after removing the overlapping resource from the second resource, and the fourth resource includes 14 OFDM symbols, except for symbols other than the OFDM symbol with index 7, the corresponding frequency domain unit includes all RBs with indexes 2 to 7; on the OFDM symbol with index 7, the corresponding frequency domain unit includes RBs with indexes 2, 4, 6, and 7. The two RBs with index 2 and index 4 are non-contiguous frequency domain units, and the continuous frequency domain unit composed of two RBs with index 6 and index 7 occupies the largest resource on the OFDM symbol with index 7 ( Or the longest length), so the continuous frequency domain unit is the first continuous frequency domain unit, and the third resource is the remaining resource after removing the related resources of the overlapping resource in the second resource, and the value of the overlapping resource Related resources include other frequency domain units except the first continuous frequency domain unit on the OFDM symbol with index 7, that is, four RBs with indexes 2 to 5 corresponding to the OFDM symbol with index 7, and the third resource is The time domain includes a total of 13 OFDM symbols indexed from 0 to 6, 8 to 13, and all RBs indexed from 2 to 7 in the frequency domain; and on the OFDM symbol indexed 7, the corresponding frequency domain Two RBs with index 6 and index 7 (the first continuous frequency domain unit). The first continuous frequency domain unit determined by this method can be used to transmit uplink data, so that the utilization of resources is maximized on the premise that continuous frequency domain resources are used on the first symbol.

It should be understood that the first continuous frequency domain unit may be one RB, or two or more RBs.

Optionally, when the first continuous frequency domain unit is in the case (2) above, as shown in FIG. 7e, the first indication information indicates that the first resource includes an OFDM symbol with an index of 7 in the time domain, The time domain includes RBs with index 5; the second resource includes the entire time slot in the time domain, that is, a total of 14 OFDM symbols with indexes 0 to 13, and all RBs with indexes 3 to 6 in the frequency domain; The size of the overlapping resource is the same as the size of the first resource, the fourth resource is the remaining resource after removing the overlapping resource from the second resource, and the fourth resource includes 14 OFDM symbols in the time domain, where Except on symbols other than the OFDM symbol with index 7, the corresponding frequency domain unit includes all RBs with indexes 3 to 6; the corresponding frequency domain unit on the OFDM symbol with index 7 includes indexes 3, 4, and The three RBs of 6, where the two RBs with index 3 and index 4 form a continuous frequency domain unit, and occupy the largest resource on the OFDM symbol with index 7. In this case, according to the principle of lowest frequency, The RB with an index of 6 is determined to be the first continuous frequency domain unit. Because the frequency of the RB decreases in the order of the index number from small to large, the RB with a larger index number in the frequency domain corresponds to a lower frequency. The relevant resource of the overlapping resource is the corresponding frequency domain on the OFDM symbol with index 7 The indexes on are three RBs from 3 to 5. The determined third resource includes a total of 13 OFDM symbols with indexes 0 to 6, 8 to 13 in the time domain, and all RBs with indexes 3 to 6 in the frequency domain; and an OFDM symbol with index 7, so Corresponding to an RB with an index of 6 in the frequency domain (the first continuous frequency domain unit). The continuous frequency domain unit with the smallest frequency determined by this method is used to transmit uplink data, so that the channel quality of the transmitted data is maximized under the premise of ensuring the use of continuous frequency domain resources on the first symbol, because generally speaking, the higher the frequency The lower the frequency domain unit is used for uplink transmission, the smaller the propagation loss of the corresponding wireless signal, the better the channel quality.

In addition, if the first symbol on the fourth resource includes two or more continuous frequency domain units with the same length, for example, as shown in FIG. 7f, the OFDM symbol with index 7 includes two continuous frequency domain units, which are A continuous frequency domain unit composed of two RBs with index 2 and index 3, and a continuous frequency domain unit composed of two RBs with index 5 and index 6, here according to the principle of the lowest frequency as an example, it can be determined A continuous frequency domain unit composed of RBs with an index of 5 and an index of 6 is the first continuous frequency domain unit, and then it is determined that the relevant resource of the overlapping resource includes an OFDM symbol with an index of 7 in the time domain. The domain includes three RBs with indexes 2 to 4, so it is determined that the third resource includes 13 OFDM symbols with indexes 0 to 6, 8 to 13 in the time domain, and includes indexes 2 to 13 in the frequency domain. All RBs of 6; and on the OFDM symbol with index 7, two RBs with index 5 and index 6 in the corresponding frequency domain (the first continuous frequency domain unit). That is, the first continuous frequency domain unit is the continuous frequency domain unit that occupies the largest resource on the first symbol in the fourth resource, and when there are multiple continuous frequency domain units with the same length and the largest resource, the first continuous frequency domain unit is determined The continuous frequency domain unit is the one with the lowest frequency among the multiple continuous frequency domain units with the largest resources.

It should be understood that in the foregoing specific implementation manner, the first continuous frequency domain unit may also be determined according to the principle of the highest frequency. Further, the first continuous frequency domain unit can also be determined by other predefined rules, so that a segment of continuous frequency domain unit can be uniquely determined from a plurality of continuous frequency domain units.

Situation e

There is an overlapping resource between the first resource and the second resource. The overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain; the second resource removes the overlap. The resource after the overlapped resource is the fourth resource, and the non-contiguous frequency domain units where the fourth resource does not exist on the second symbol, that is, all continuous frequency domain units, then the third resource is the first In the second resource, the remaining resources except for the related resources of the overlapping resources, the related resources of the overlapping resources include the overlapping resources on the second symbol, in other words, the second symbol on the fourth resource The corresponding continuous frequency domain unit is reserved for transmitting uplink data.

For example, as shown in FIG. 7g, the first indication information indicates that the first resource includes 7 OFDM symbols indexed in the time domain and three RBs indexed from 3 to 5 in the time domain; and the second resource is in the time domain. Including the entire time slot, that is, a total of 14 OFDM symbols with indexes 0 to 13, including all RBs with indexes 4 to 7 in the frequency domain; overlapping resources include the corresponding indexes on the OFDM symbols with index 7 in the time domain The fourth resource is the remaining resource after removing the overlapping resources from the second resource. The fourth resource includes 14 OFDM symbols in the time domain, except that the index is 7 For symbols other than the OFDM symbol, the corresponding frequency domain unit includes all RBs indexed from 4 to 7; for the OFDM symbol with index 7, the corresponding frequency domain unit includes two indexed 6 and 7 RB, and form continuous frequency domain units. At this time, there is no non-continuous frequency domain unit on the OFDM symbol with index 7, then it is determined that the third resource is the second resource except that the index is the corresponding index on the 7 OFDM symbols The remaining resources after two RBs (overlapping resources) with index 4 and index 5. The third resource includes a total of 13 OFDM symbols indexed from 0 to 6, 8 to 13 in the time domain. The domain includes all RBs with indexes 4 to 7; and on the OFDM symbol with index 7, two RBs with index 6 and index 7 in the corresponding frequency domain.

In the method of this embodiment, on at least one time domain symbol corresponding to the overlapping resource, if the frequency domain units on the time domain symbol are all continuous frequency domain units, then a continuous frequency domain unit is reserved for uplink transmission. Data, thereby improving the transmission efficiency of uplink resources and the utilization of remaining resources.

Situation f

In addition, other possible implementation manners of this embodiment also include a combination of the foregoing two or more cases. For example, a combination of case e and case b to case d may specifically include case e and case c, or a combination of case e and case b. The following takes the combination of the above case e and the case c as an example for description.

When there are overlapping resources between the first resource and the second resource, and the overlapping resources include at least one first symbol and at least one second symbol in the time domain, each first symbol and each second symbol The symbol includes at least one frequency domain unit in the frequency domain, the fourth resource is the resource after removing the overlapping resources from the second resource, and the frequency domain corresponding to each first symbol and each second symbol is determined separately Whether the unit meets the above-mentioned various conditions, and respectively determine whether the corresponding frequency domain unit is reserved on each time domain symbol, and then determine the size of the third resource.

Specifically, as shown in FIG. 7h, the first indication information indicates that the first resource includes two OFDM symbols with index 7 and index 4 in the time domain. Optionally, set the OFDM symbol with index 7 as the first resource. One symbol, the OFDM symbol with index 4 is the second symbol, the frequency domain unit reserved on the first symbol includes three RBs with indices 3 to 5, and the frequency domain unit reserved on the second symbol includes index 5 and Two RBs with an index of 6; and the size of the overlapping resource is the same as the size of the first resource, the remaining resource after removing the overlapping resource from the second resource is the fourth resource, and the fourth resource is The time domain includes 14 OFDM symbols. Among them, there are non-contiguous frequency domain units on the OFDM symbol with index 7, that is, the two RBs with index 2 and index 6 are non-contiguous frequency domain units, so the index is determined to be 7 All RBs on the OFDM symbol (first symbol) are not used to transmit uplink data. For the OFDM symbol with index 4 in the fourth resource, there is no discontinuous frequency domain unit, that is, three RBs with indexes 2 to 4 in the frequency domain form a continuous frequency domain unit. Therefore, on the OFDM symbol with index 4, the corresponding The continuous frequency domain units with indices 2 to 4 in the frequency domain can be used to transmit uplink data, as a part of the third resource, and the determined third resource includes indices 0 to 3, 5 to 6 in the time domain. , A total of 12 OFDM symbols from 8 to 13, corresponding to all RBs with indexes 2 to 6 in the frequency domain; and on an OFDM symbol with index 4, the corresponding three OFDM symbols in the frequency domain with indexes 2 to 4 RB.

It is understandable that when there are multiple OFDM symbols in the fourth resource, when determining the third resource, it is necessary to consider one by one whether the frequency domain unit on each time domain symbol is continuous, non-continuous, preset highest or The lowest frequency, etc., in order to be able to determine whether to keep or delete the frequency domain units on these time domain symbols. This embodiment only gives an example of a combination of the above two situations, and may also include a combination of more possible situations described above, and the more other possible situations. For details, please refer to the relevant descriptions of the above specific situations. This embodiment will not repeat this.

In the fourth possible implementation manner, the terminal device does not determine the third resource according to the uplink data transmission mode, but only determines the third resource according to the first resource and the second resource.

Specifically, the various situations included in the fourth possible implementation manner are the same as the implementation manners of the various situations in the foregoing third possible implementation manner, for example, specifically including the foregoing "case b" to "case f". For the specific implementation in each case, please refer to the description of the foregoing embodiment, which will not be repeated here.

Further, in the third or fourth possible implementation manner, the terminal device further determines the third resource according to the overlap between the resource used to carry the reference signal in the second resource and the first resource. Taking into account the integrity of the reference signal, the transmission data and/or the time-domain continuity characteristics of the reference signal, it may affect the demodulation performance of the transmission data. Therefore, the terminal equipment also determines the difference between the resource carrying the reference signal in the second resource and the first resource. And/or the time domain continuity of the remaining resources after removing the first resource from the second resource, determine the third resource. Specifically, in this embodiment, a DMRS is taken as an example to illustrate the specific process of determining the third resource.

Situation g

When the terminal device determines the third resource according to the first resource and the second resource, if there are overlapping resources between the first resource and the second resource, the overlapping resource includes at least one first symbol in the time domain , Including at least one frequency domain unit in the frequency domain, the time unit where the first symbol is located is the first time unit, and the first time unit includes at least one frequency domain unit in the frequency domain, and A time unit carries the first reference signal. Wherein, if any of the following conditions is met, it is determined that the third resource is the remaining resource of the second resource excluding related resources of overlapping resources, and the related resources of the overlapping resources include the first resource in the time domain. A time unit, including all frequency domain units corresponding to the first time unit in the frequency domain, and any one of the conditions includes:

Condition 1: The overlapping resource overlaps with the resource carrying the first reference signal in the first time unit, and the first reference signal includes DMRS or SRS;

Condition 2: The total number of symbols of the first symbol in the first time unit is greater than or equal to a first preset value, or the maximum number of consecutive first symbols in the first time unit is greater than or equal to the second default value;

Condition 3: Condition 1 and Condition 2, that is, the overlapping resource overlaps with the resource carrying the first reference signal in the first time unit, and the total number of symbols of the first symbol in the first time unit is greater than or equal to the first time unit. The preset value or the number of consecutive first symbols in the first time unit is greater than or equal to the second preset value.

Specifically, in a specific implementation of the aforementioned "condition 1", for example, as shown in FIG. 7i, the first indication information indicates that the first resource includes two OFDM symbols with an index of 2 and an index of 3 in the time domain, And each OFDM symbol correspondingly includes two RBs with index 5 and index 6 in the time domain; the size of the overlapping resource is the same as the size of the first resource, and the time when the overlapping resource is located A slot is a first time unit. In the first time unit, an OFDM symbol with an index of 2 in the time domain, and five RBs with an index of 2 to 6 in the frequency domain are resources used to carry DMRS. There is an overlap between the overlapping resource and the resource carrying the DMRS, and the overlapping resource is two RBs with indexes 5 and 6 in the frequency domain corresponding to the OFDM symbol with index 2. It is determined that all frequency domain units corresponding to the first time unit are not used to transmit uplink data. Here, the first time unit may be the time slot where the overlapping resource is located, that is, the entire time slot is the relevant resource of the overlapping resource, and the third The resources are related resources of the second resource excluding the overlapping resources, and the third resource determined in this implementation manner is an empty set.

Optionally, in a specific implementation of the aforementioned "condition 2", for example, as shown in FIG. 7j, the first indication information indicates that the first resource includes a total of 4 OFDM symbols with indexes 4 to 7 in the time domain, And the frequency domain resource corresponding to each OFDM symbol includes two RBs with index 5 and index 6, and the size of the overlapping resource is the same as the size of the first resource, and the time slot in which the overlapping resource is located is The first time unit, where the first time unit may be a time slot where the overlapping resource is located. Further, in the first time unit, the OFDM symbol with an index of 2 in the time domain and the five RBs with an index of 2 to 6 in the frequency domain are resources for carrying DMRS. Assuming that the first preset value is 4, the total number of symbols (4) of the first symbol in the first time unit is equal to the first preset value. At this time, it is determined that all frequency domain units corresponding to the first time unit are not used for To transmit uplink data, that is, the entire time slot is the relevant resource of the overlapping resource, and the third resource is the relevant resource of the second resource excluding the overlapping resource. The third resource determined in this implementation is empty set.

In addition, the method further includes: when determining the third resource, it can also be determined whether the number of consecutive first symbols in the first time unit is greater than or equal to a second preset value, and if so, the first time unit corresponds to None of the frequency domain units are used for uplink transmission. The number of symbols of the consecutive first symbol refers to the number of time domain symbols corresponding to the continuous time domain unit among all the time domain symbols of the first time unit. For example, the continuous time domain unit shown in FIG. 7j is composed of four OFDM symbols with indexes 4 to 7, so the number of symbols of the first continuous symbol is 4, and the second preset value is the same as the first preset value. The setting value can be the same or different.

Optionally, the first time unit may be a slot or a subframe, or may also be another time unit, which is not limited in this embodiment.

Optionally, in a specific embodiment of the foregoing "condition 3", the "condition 3" is the intersection of the foregoing "condition 1" and "condition 2", that is, only when the "condition 1" and "condition 2" When both are satisfied, it is determined that all frequency domain units corresponding to the first time unit are not used for transmitting uplink data.

Situation h

Corresponding to situation g, when the terminal device determines the third resource according to the first resource and the second resource, if there are overlapping resources between the first resource and the second resource, the overlapping resource is in the time domain At least one second symbol is included, and at least one frequency domain unit is included in the frequency domain. Wherein, if any of the following conditions is met (that is, another aspect of "Condition 1", "Condition 2", and "Condition 3" in the case g above), it is determined that the third resource is excluded from the second resource The remaining resources of the related resources of the overlapping resources include the at least one second symbol in the time domain and all frequency domain units corresponding to the at least one second symbol in the frequency domain. The specific circumstances include the following:

Regarding the other aspect of the aforementioned "condition 1": the overlapping resource does not overlap with the resource carrying the first reference signal in the first time unit;

Another aspect of the above "condition 2": the total number of symbols of the first symbol in the first time unit is less than the first preset value, or the number of consecutive first symbols in the first time unit The maximum value of is less than the second preset value;

Another aspect of the above "condition 3": the overlapping resources and the resources carrying the first reference signal in the first time unit do not overlap, and the total number of symbols of the first symbol in the first time unit is less than The first preset value or the maximum value of the number of consecutive first symbols in the first time unit is smaller than the second preset value.

Specifically, for example, as shown in FIG. 7k, the overlapping resource time domain includes three OFDM symbols with indexes 4 to 6, and the frequency domain corresponding to each OFDM symbol includes two OFDM symbols with index 5 and index 6. RB; the size of the overlapping resource is the same as the size of the first resource. The time slot in which the overlapping resource is located is the first time unit, the OFDM symbol with index 2 in the time domain in the first time unit, and the RB with index 2 to 6 in the frequency domain are used to carry DMRS. Resources, wherein there is no overlap between the overlapping resources and the resources carrying the DMRS, so it is determined that the relevant resources of the overlapping resources are all RBs corresponding to the three OFDM symbols indexed 4 to 6 in the time domain , The third resource is the remaining resource after removing the related resources of the overlapping resource from the second resource, and it is determined that the third resource is a total of 11 including indexes 0 to 3, 7 to 13 in the time domain OFDM symbols, including all RBs with indexes 2 to 6 in the frequency domain.

Optionally, it is determined whether the total number of symbols of the first symbol in the first time unit is less than a first preset value. For example, the total number of symbols of the first symbol in the first time unit shown in FIG. 7k is 3, assuming the first preset The value is 4, and the total number of symbols of the first symbol is less than the first preset value, then it is determined that all the three first symbols (three OFDM symbols with indices 4 to 6) in the first time unit correspond to None of the frequency domain units are used to transmit uplink data, and the third resource is a resource remaining after the second resource removes all frequency domain units corresponding to the three first symbols.

Optionally, it is determined whether the number of consecutive first symbols in the first time unit is less than a first preset value, and if the first time unit includes multiple continuous time domain units, each of the continuous time domain units If the unit is composed of at least one first symbol, a target continuous time domain unit is first determined in multiple continuous time domain units, and the target continuous time domain unit contains the largest number of first symbols, and then the target continuous time domain unit The number of first symbols corresponding to the unit is compared with the second preset value, and finally the size of the third resource is determined according to the comparison result.

Optionally, in a specific embodiment of the other aspect of the aforementioned "condition 3", the other aspect of the "condition 3" is another aspect of the foregoing "condition 1" and another aspect of the "condition 2". Intersection, that is, only when the other aspect of the "condition 1" and the other aspect of the "condition 2" are satisfied, it is determined that all frequency domain units corresponding to the second symbol are not used for transmitting uplink data.

Situation i

In addition, optionally, other possible implementation manners of this embodiment also include a combination of case g and case h.

Specifically, for example, as shown in FIG. 71, the second resource includes time slot 1 and time slot 2. In the time domain of time slot 1 and time slot 2, 14 OFDM symbols with index 0 to index 13 are included. The domain includes 5 RBs with index 2 to index 6; the overlapping resources are in slot 1 and slot 2, and the first indication information indicates that the first resource is an OFDM symbol with index 10 in slot 1 Above, the corresponding two RBs with indexes 4 and 5 in the frequency domain, and, on the two OFDM symbols with indexes 2 and 3 in slot 2, the corresponding indexes in the frequency domain are 5 and 6. Of two RBs. And the size of the overlapping resource of the first resource and the second resource is the same as the size of the first resource, and the time slot 1 where the overlapping resource is located is the first time unit, and the time slot 2 is the second time unit. The RBs with indexes 2 to 6 corresponding to the OFDM symbols with index 2 of the first time unit and the second time unit are used to carry DMRS, then when determining the third resource, each time unit is used to carry DMRS. Compare resources with overlapping resources.

Specifically, in the first time unit, overlapping resources and resources carrying DMRS do not overlap, so all RBs on the OFDM symbol with index 10 in the first time unit are not used to transmit uplink data, that is, except for the aforementioned Except for all RBs on the OFDM symbol with index 10 in the first time unit, all RBs with indexes 2 to 6 on the remaining time domain symbols can be used to transmit uplink data. In the second time unit, since the overlapped resource overlaps with the resource carrying the DMRS, the second time unit is not used to transmit uplink data, that is, the determined third resource includes time slot 1 in the time domain. There are a total of 13 OFDM symbols indexed from 0 to 9, 11 to 13, including all RBs indexed from 2 to 6 in the frequency domain.

It is understandable that the specific implementation manner may also include other combinations of the above-mentioned "case g" and "case h", and each time slot needs to be based on the above-mentioned "condition 1" to "condition 3" (and The scope of the third resource is determined by the rules from the other aspect of "Condition 1" to the other aspect of "Condition 3". For the specific determination process, refer to the description of the foregoing embodiment, and will not be repeated.

In various specific implementations of "case g" and "case h" provided in this embodiment, the time domain symbols carrying reference signals, constant power, and the length of the time domain symbols corresponding to overlapping resources are considered to determine The third resource includes the following beneficial effects:

First, when considering the resources carrying DMRS, since DMRS is an important reference signal for demodulating data, if the first resource reserved in a certain time slot overlaps with the resource carrying DMRS, the time slot Part or all of the DMRS in the DMRS will not be transmitted due to the existence of reserved resources, which will seriously affect the data demodulation of this time slot, which not only wastes transmission resources, but also causes unnecessary energy consumption overhead. Therefore, in this embodiment, when the allocated resources carry DMRS resources and overlap resources, the entire time slot is not used for the UE to send uplink data to avoid this situation. This method ensures that the UE will All bearer DMRS resources are used to transmit demodulation reference signals, which not only guarantees data demodulation performance, but also avoids the waste of energy consumption caused by the UE still transmitting uplink data when the data cannot be demodulated correctly.

Second, in order to keep the power constant, when the number of frequency domain units for the UE to transmit uplink data on each time domain symbol is different, whether it is a continuous frequency domain unit or not, it may cause power changes, such as power amplification or reduction, and then As a result, the signal phases of the UE on different time domain symbols are not continuous. Therefore, in the method of this embodiment, once the resource of a certain time domain symbol of the allocated resource overlaps with the reserved resource, all frequency units on the time domain symbol They are not used to transmit uplink data, but the remaining part of the resources can still be used to transmit uplink data, thereby ensuring the same bandwidth and constant power transmitted on each time domain symbol.

Third, compare the total number of time-domain symbols corresponding to overlapping resources with the first preset value or the second preset value because the relevant resources of the overlapping resources divide the entire time slot into at least two parts, so The related resources of the overlapping resources refer to all frequency units on at least one time domain symbol included in the overlapping resources. If the distance between the two divided resources is short, for example, less than or equal to the first preset value or the second preset value. Set a value, the resources carrying DMRS on some of the resources can not only be used for demodulation of this part of data, but also for demodulation of another part of data, so both parts of resources can continue to be used for data transmission; but If the distance between the two parts of resources after division is longer, for example, greater than the first preset value or the second preset value, the data demodulation performance of the part that does not include the DMRS will be severely degraded. Therefore, this embodiment sets all the time slots The resources are not used to transmit uplink data, which not only guarantees the data demodulation performance, but also avoids the waste of energy consumption caused by the UE still transmitting uplink data when the data cannot be demodulated correctly.

In summary, the method provided in this embodiment adopts a simplified way to determine the third resource after considering factors such as the size of the resource carrying the DMRS, constant power, and the total number of time-domain symbols corresponding to the overlapping resource. Not only is it easy to implement for the UE, but it also guarantees the UE's uplink data transmission performance.

Optionally, in the foregoing second to fourth possible implementation manners, there is also a minimalist way to indicate the first resource. Specifically, the first indication information sent by the network device only includes the first resource. Symbol, when there are overlapping resources between the first resource and the second resource, the relevant resources of the overlapping resource are all frequency domain units on the indicated first symbol, and the third resource is The remaining resources after removing the related resources of the overlapping resources from the second resource. For example, as shown in FIG. 7m, the first indication information indicates that the first resource is an OFDM symbol with index 7 in the time domain, and related resources of the overlapping resource include an OFDM symbol with index 7 in the time domain, and Including five RBs with indexes 2 to 6, it is determined that the third resource is the remaining resource after removing the related resources of the overlapping resources in the second resource, that is, the third resource includes the index of There are a total of 13 OFDM symbols from 0 to 6, 8 to 13, and each OFDM symbol includes all RBs with indexes 2 to 6 in the frequency domain.

In this implementation manner, the terminal device may determine the third resource according to the uplink data transmission mode or not according to the uplink data transmission mode, and the reserved first resource may be indicated by the DCI mode, so that the overhead of the indication information is small, The indication speed is fast and the efficiency is high.

Optionally, in the foregoing step 101 in this embodiment, a specific manner of indicating the first resource in a bitmap manner is described in detail.

Specifically, the first indication information may include one RB-level bitmap information (frequency domain) and one symbol-level bitmap information (time domain). The UE can determine the reserved first resource according to the first indication information. For example, as shown in Figure 8a, the RB-level bitmap is "0011100", and each bit represents an RB, and the symbol-level bitmap is "00000001000000", where Each bit represents an OFDM symbol in a slot; a bit value of "1" represents that the RB/symbol is an RB/symbol included in the reserved resource, and a bit value of "0" represents that the RB/symbol is not an RB included in the reserved resource /symbol. According to the indication information, the bitmap information at the RB level and the bitmap information at the symbol level both indicate a resource of "1", which is the first reserved resource.

Optionally, the granularity (or bundling size) indicated by the RB-level bitmap may be an RB group, where one RBG may include multiple consecutive RBs, and in this case, each bit of the RB-level bitmap represents whether an RBG is It is the RBG included in the reserved resources; the range indicated by the symbol-level bitmap can be the bitmap of the symbols in one time slot, or the bitmap of the symbols in two or more time slots, at this time the symbol-level bitmap The number of bits can be greater than or equal to 14 bits, for example, it can be 28 bits or more.

Optionally, the indication information may also include slot-level bitmap information, and the period-level bitmap information together with the RB-level bitmap information and the symbol-level bitmap information indicate reserved resources. Among them, each bit of the slot-level bitmap information represents "the period of a symbol-level bitmap". For example, if the symbol-level bitmap indicates the symbol bitmap in a slot, the time slot-level bitmap information One bit represents one time slot; if the symbol level bitmap indicates the symbol bitmap in two time slots, then one bit in the time slot level bitmap information represents two time slots. For example, as shown in Figure 8b, the time slot level indication information is "110". According to the indication information, the RB-level bitmap information, the symbol-level bitmap information, and the slot-level indication information all indicate a resource of "1", which is the first reserved resource.

Optionally, the RB-level bitmap may be a bitmap based on a common RB grid, or a bitmap based on a UE partial bandwidth (BWP) RB grid.

Optionally, the manner in which the base station sends the first indication information may be public, such as being carried in a system information block (system information block, SIB) in a broadcast manner; it may also be sent through RRC signaling to each UE. Configured.

Optionally, the base station may configure multiple RB-symbol-level reserved resources for the UE; and the final reserved resource should be the union of multiple RB-symbol-level reserved resources.

In the method provided in this embodiment, the network device configures the terminal device with the reserved resources in the uplink transmission process through the first indication information, so that the terminal device is configured to overlap resources or overlap resources between the reserved first resource and the allocated second resource. Uplink transmission is not performed on the related resources, and the remaining resources of the second resource excluding overlapping resources or related resources can continue to be used for uplink transmission, thereby effectively using transmission resources, not only avoiding transmission between terminal devices The resources overlap each other, and the resource utilization rate is improved when the number of repeated transmissions in the uplink transmission process of the terminal device is large, and the transmission efficiency and reliability are improved.

Correspondingly, this embodiment also provides a data transmission method, which is applied to a network device, such as a base station. Specifically, referring to FIG. 9, the method includes:

Step 201: The network device generates first indication information, where the first indication information is used to instruct the terminal device to reserve the first resource.

Step 202: The network device sends the first indication information to the terminal device.

Optionally, the sending of the first indication information by the network device includes: sending by the network device broadcast or sending the first indication information through RRC signaling, and the first indication information may be indicated in a bitmap manner For the specific indication mode of the first resource, refer to the description of the foregoing embodiment, which is not described in detail in this embodiment.

In addition, the method further includes: the network device sends the DCI, or the terminal device is configured with the second resource in a pre-configured manner, and the configuration of the second resource is not limited in this embodiment.

Step 203: The network device determines a third resource according to the first resource and the second resource, the second resource is a resource used for the terminal device to send uplink data, and the third resource is among the second resources Excluding overlapping resources or remaining resources related to overlapping resources, the overlapping resources are resources where the first resource and the second resource overlap.

Step 204: The network device receives the uplink data sent by the terminal device in the third resource.

Wherein, the terminal device is a device with enhanced coverage or a device that needs to perform multiple transmissions, and/or the number of times the terminal device needs to perform repeated transmissions is greater than a preset number.

Optionally, in a specific implementation manner, step 203 includes: the network device determines the third resource according to the first resource, the second resource, and a transmission mode of uplink data, wherein the uplink data The transmission mode is the conversion precoding transmission mode.

Optionally, in another specific implementation manner, step 203 includes: the network device determines the third resource according to the first resource, the second resource, and the uplink data transmission mode, and the third resource The resource is the remaining resource from the second resource excluding the overlapping resource, wherein the transmission mode of the uplink data is a non-transformed precoding transmission mode.

Wherein, optionally, the overlapping resource includes at least one symbol in the time domain; wherein the related resource of the overlapping resource includes the at least one symbol in the time domain and the at least one symbol in the frequency domain All corresponding frequency domain resources; the third resource is a remaining resource in the second resource excluding related resources of the overlapping resource.

Optionally, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is a related resource excluding overlapping resources in the second resource The relevant resources of the overlapping resources include all frequency domain units corresponding to the first symbol.

Wherein, the fourth resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit is It means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the first symbol.

Optionally, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is a related resource excluding overlapping resources in the second resource The related resources of the overlapping resources include other frequency domain units on the first symbol except for the first continuous frequency domain unit.

Wherein, the fourth resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit is Refers to the presence of at least one frequency domain unit between the first frequency domain unit and the second frequency domain unit on the first symbol; the first continuous frequency domain unit is occupied by the first symbol in the fourth resource The continuous frequency domain unit with the largest resource, or the continuous frequency domain unit with the highest or lowest frequency on the first symbol in the fourth resource.

Optionally, the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is a related resource excluding overlapping resources in the second resource The related resources of the overlapping resources include the overlapping resources on the second symbol.

Wherein, the fourth resource does not have a non-contiguous frequency domain unit on the second symbol, and the fourth resource is the resource after removing the overlapping resource from the second resource, and the non-contiguous frequency domain unit It means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the second symbol.

Optionally, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time unit where the first symbol is located is the first time unit; the third The resource is the remaining resource in the second resource excluding the related resources of the overlapping resource. The related resource of the overlapping resource includes the first time unit where the first symbol is located in the time domain, and includes the first time unit in the frequency domain. All frequency domain units corresponding to a time unit.

Wherein, the overlapping resource overlaps with the resource carrying the first reference signal in the first time unit, and/or the total number of symbols of the first symbol in the first time unit is greater than or equal to the first preset Value, or the number of consecutive first symbols in the first time unit is greater than or equal to a second preset value.

Optionally, the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time unit in which the second symbol is located is the second time unit; the third The resource is the remaining resource in the second resource excluding related resources of the overlapping resource, and the related resource of the overlapping resource includes all frequency domain units corresponding to the second symbol in the frequency domain.

Wherein, there is no overlap between the overlapping resource and the resource carrying the first reference signal in the second time unit; and/or, the total number of symbols of the second symbol in the second time unit is less than a first preset value, Or, the maximum value of the number of consecutive second symbols in the second time unit is less than the second preset value.

It should be noted that the various implementations of the network device determining the third resource based on the first resource and the second resource in this embodiment are the same as the foregoing various implementations of the terminal device determining the third resource (step 102), see The detailed description of the above various situations will not be repeated in this embodiment.

The following describes device embodiments corresponding to the foregoing method embodiments.

Refer to FIG. 10, which is a schematic structural diagram of a data transmission device provided by an embodiment of this application. The device may be the terminal device in the foregoing method embodiment, or a type of network device, or may also be a component located in the terminal device or network device, such as a chip. Further, the device can realize all the functions of the terminal device in the foregoing embodiment, or can also realize all the functions of the network device in the foregoing embodiment.

Further, as shown in FIG. 10, the device may include a receiving unit 1001, a processing unit 1002, and a sending unit 1003. In addition, the device may also include a storage unit or other units or modules.

On the one hand, when the apparatus is used as a terminal device, the receiving unit 1001 is used to receive first indication information from the network device, and the first indication information is used to indicate the first resource reserved by the terminal device; the processing unit 1002 is used to The first resource and the second resource determine a third resource, the second resource is a resource for the terminal device to send uplink data, and the third resource is the second resource excluding overlapping resources or overlapping resources The remaining resources of the related resources of the resource, the overlapping resource is a resource where the first resource and the second resource overlap; the sending unit 1003 is configured to send uplink data on the third resource.

Optionally, in a specific implementation manner, the processing unit 1002 is specifically configured to determine the third resource according to the first resource, the second resource, and the uplink data transmission mode, wherein the uplink data The transmission mode is the conversion precoding transmission mode.

Optionally, in another specific implementation manner, the processing unit 1002 is specifically configured to determine the third resource according to the first resource, the second resource, and the uplink data transmission mode, and the third resource The resource is the remaining resource from the second resource excluding the overlapping resource, wherein the transmission mode of the uplink data is a non-transformed precoding transmission mode.

Wherein, the overlapping resource includes at least one symbol in the time domain; wherein the related resource of the overlapping resource includes the at least one symbol in the time domain, and includes all frequencies corresponding to the at least one symbol in the frequency domain. Domain resource; the third resource is the remaining resource in the second resource excluding related resources of the overlapping resource.

Optionally, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is a related resource excluding overlapping resources in the second resource The relevant resources of the overlapping resources include all frequency domain units corresponding to the first symbol; wherein, the fourth resource has non-contiguous frequency domain units on the first symbol, and the fourth resource The resource after removing the overlapping resource for the second resource, the non-contiguous frequency domain unit means that there is at least one interval between the first frequency domain unit and the second frequency domain unit on the first symbol Frequency domain unit.

Optionally, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is a related resource excluding overlapping resources in the second resource The related resources of the overlapping resources include other frequency domain units on the first symbol except for the first continuous frequency domain unit; wherein, the fourth resource has a non-continuous frequency on the first symbol Domain unit, the fourth resource is the resource after removing the overlapping resources from the second resource, and the non-contiguous frequency domain unit refers to the presence of a first frequency domain unit and a second frequency domain unit on the first symbol The frequency domain units are separated by at least one frequency domain unit; the first continuous frequency domain unit is the continuous frequency domain unit that occupies the largest resource on the first symbol in the fourth resource, or is the fourth resource The continuous frequency domain unit with the highest or lowest frequency on the first symbol.

Optionally, the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is a related resource excluding overlapping resources in the second resource The relevant resources of the overlapping resources include the overlapping resources on the second symbol; wherein, the fourth resource does not have a non-contiguous frequency domain unit on the second symbol, and the first The fourth resource is the resource after removing the overlapping resource from the second resource, and the non-contiguous frequency domain unit means that there is at least one interval between the first frequency domain unit and the second frequency domain unit on the second symbol Frequency domain unit.

Optionally, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time unit where the first symbol is located is the first time unit; the third The resource is the remaining resource in the second resource excluding the related resources of the overlapping resource. The related resource of the overlapping resource includes the first time unit where the first symbol is located in the time domain, and includes the first time unit in the frequency domain. All frequency domain units corresponding to a time unit; wherein there is overlap between the overlapping resource and the resource carrying the first reference signal in the first time unit, and/or, the first time unit in the first time unit The total number of symbols of one symbol is greater than or equal to the first preset value, or the number of consecutive first symbols in the first time unit is greater than or equal to the second preset value.

Optionally, the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time unit in which the second symbol is located is the second time unit; the third The resource is the remaining resource in the second resource excluding the related resources of the overlapping resource, and the related resource of the overlapping resource includes all frequency domain units corresponding to the second symbol in the frequency domain; wherein, the overlapping There is no overlap between the resource and the resource carrying the first reference signal in the second time unit; and/or, the total number of symbols of the second symbol in the second time unit is less than a first preset value, or, The maximum value of the number of consecutive second symbols in the second time unit is less than the second preset value.

Optionally, the first preset value and the second preset value may be the same or different.

Wherein, the device is a device with enhanced coverage or a device that needs to perform multiple transmissions, and/or the number of repeated transmissions is greater than a preset number.

Optionally, the preset number of times is 8.

On the other hand, when the apparatus is used as a network device, such as a base station, the processing unit 1002 is used to generate first indication information, and the first indication information is used to instruct the terminal equipment to reserve the first resource; the sending unit 1003 is used to send For the first indication information, the processing unit 1002 is further configured to determine a third resource according to the first resource and the second resource, and the receiving unit 1001 is configured to receive the uplink data sent by the terminal device in the third resource , Wherein the second resource is a resource used for the terminal device to send uplink data, the third resource is a remaining resource in the second resource excluding overlapping resources or related resources of overlapping resources, and the overlapping Overlapping resources are resources where the first resource and the second resource overlap.

Optionally, in a specific implementation manner, the processing unit 1002 is further configured to generate second indication information, where the second indication information is used to configure the second resource for the terminal device, and the second indication information may It is pre-configured to the terminal device, or dynamically configured and sent to the terminal device through the sending unit 1003.

Optionally, in another specific implementation manner, the processing unit 1002 is specifically configured to determine the third resource according to the first resource, the second resource, and a transmission mode of uplink data, where the The transmission mode is the conversion precoding transmission mode.

Optionally, in another specific implementation manner, the processing unit 1002 is specifically configured to determine the third resource according to the first resource, the second resource, and the uplink data transmission mode, and the third resource is In the second resource, the remaining resources excluding the overlapping resources, wherein the transmission mode of the uplink data is a non-transformed precoding transmission mode.

Optionally, the overlapping resource includes at least one symbol in the time domain; wherein the related resource of the overlapping resource includes the at least one symbol in the time domain, and includes the symbol corresponding to the at least one symbol in the frequency domain. All frequency domain resources; the third resource is a remaining resource in the second resource excluding related resources of the overlapping resource.

Optionally, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is a related resource excluding overlapping resources in the second resource The relevant resources of the overlapping resources include all frequency domain units corresponding to the first symbol; wherein, the fourth resource has non-contiguous frequency domain units on the first symbol, and the fourth resource The resource after removing the overlapping resource for the second resource, the non-contiguous frequency domain unit means that there is at least one interval between the first frequency domain unit and the second frequency domain unit on the first symbol Frequency domain unit.

Optionally, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is a related resource excluding overlapping resources in the second resource The related resources of the overlapping resources include other frequency domain units on the first symbol except for the first continuous frequency domain unit.

Wherein, the fourth resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit is Refers to the presence of at least one frequency domain unit between the first frequency domain unit and the second frequency domain unit on the first symbol; the first continuous frequency domain unit is occupied by the first symbol in the fourth resource The continuous frequency domain unit with the largest resource, or the continuous frequency domain unit with the highest or lowest frequency on the first symbol in the fourth resource.

Optionally, the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain; the third resource is a related resource excluding overlapping resources in the second resource The relevant resources of the overlapping resources include the overlapping resources on the second symbol; wherein, the fourth resource does not have a non-contiguous frequency domain unit on the second symbol, and the first The fourth resource is the resource after removing the overlapping resource from the second resource, and the non-contiguous frequency domain unit means that there is at least one interval between the first frequency domain unit and the second frequency domain unit on the second symbol Frequency domain unit.

Optionally, the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time unit where the first symbol is located is the first time unit; the third The resource is the remaining resource in the second resource excluding the related resources of the overlapping resource. The related resource of the overlapping resource includes the first time unit where the first symbol is located in the time domain, and includes the first time unit in the frequency domain. All frequency domain units corresponding to a time unit; wherein the overlapping resource overlaps with the resource carrying the first reference signal in the first time unit, and/or, the first symbol in the first time unit The total number of symbols in is greater than or equal to the first preset value, or the number of consecutive first symbols in the first time unit is greater than or equal to the second preset value.

Optionally, the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time unit in which the second symbol is located is the second time unit; the third The resource is the remaining resource in the second resource excluding the related resources of the overlapping resource, and the related resource of the overlapping resource includes all frequency domain units corresponding to the second symbol in the frequency domain; wherein, the overlapping The resource does not overlap with the resource carrying the first reference signal in the second time unit; and/or the total number of symbols of the second symbol in the second time unit is less than a first preset value, or the second time unit The maximum value of the number of consecutive second symbols in the time unit is less than the second preset value.

In specific implementation, an embodiment of the present application also provides a communication device. Refer to FIG. 11, which is a schematic structural diagram of a communication device provided in an embodiment of the present application. The communication device may be the network device in the foregoing embodiment, or a terminal device, or a component (such as a chip) that can be used in a terminal device. The communication device can implement the functions or operations of the network device and the terminal device in the foregoing embodiments.

As shown in FIG. 11, the communication device may include a transceiver 1101, a processor 1102, and a memory 1103, where the memory 1103 may be used to store code or data. The transceiver 1101 may include components such as a receiver, a transmitter, and an antenna. In addition, the communication device may also include more or fewer components, or a combination of certain components, or a different component arrangement, which is not limited in this application. .

The processor 1102 is the control center of the communication device. It uses various interfaces and lines to connect the various parts of the entire communication device. By running or executing the software program or module stored in the memory 1103, and calling the data stored in the memory 1103, Perform various functions of communication equipment or process data.

Optionally, the processor 1102 may be composed of an integrated circuit (IC), for example, may be composed of a single packaged IC, or may be composed of connecting multiple packaged ICs with the same function or different functions. For example, the processor may only include a central processing unit (CPU), or a GPU, a digital signal processor (DSP), and a control chip (such as a baseband chip) in the transceiver module. combination. In various embodiments of the present application, the CPU may be a single computing core, or it may include multiple computing cores.

Optionally, the processor 1102 includes a processing chip, and the processing chip may include one or more random access storage units, and the storage unit may be used to store instructions or computer programs.

The transceiver 1101 is used to establish a communication channel, so that a communication device is connected to a communication network through the communication channel, so as to realize communication transmission between the communication device and other devices. Among them, the transceiver can be a module that completes the transceiver function. For example, the transceiver may include communication modules such as a wireless local area network (WLAN) module, a Bluetooth module, a baseband (baseband) module, and a radio frequency (RF) circuit corresponding to the communication device. For wireless local area network communication, Bluetooth communication, infrared communication and/or cellular communication system communication, such as wideband code division multiple access (WCDMA) and/or high speed downlink packet access access, HSDPA). The transceiver is used to control the communication of each component in the communication device, and can support direct memory access (direct memory access).

In different embodiments of the present application, various transceiver modules in the transceiver generally appear in the form of integrated circuit chips, and can be selectively combined, without including all transceiver modules and corresponding antenna groups. For example, the transceiver may only include a baseband chip, a radio frequency chip, and a corresponding antenna to provide communication functions in a cellular communication system. For a communication connection established via a transceiver, such as wireless local area network access or WCDMA access, the communication device can be connected to a cellular network or the Internet.

The memory 1103 may include a volatile memory (volatile memory), such as random access memory (random access memory, RAM), and may also include a non-volatile memory (non-volatile memory), such as flash memory (flash memory), Hard disk drive (HDD) or solid-state drive (SSD); the storage may also include a combination of the above types of storage. Programs or codes or data may be stored in the memory, and the processor 1102 in the communication device can implement the functions of the communication apparatus by executing the programs or codes.

In the embodiment of the present application, the processor 1102 and the transceiver 1101 may be separately or coupled to implement all or part of the steps in the data transmission method in the foregoing method embodiment.

For example, when the communication device is used as the terminal device in the foregoing embodiment, such as a UE, the transceiver 1101 may receive first indication information from the network device, and the processor 1102 determines the third resource according to the first resource and the second resource. , And send uplink data on the third resource through the transceiver 1101, where the second resource is a resource for the terminal device to send uplink data, and the third resource is the second resource Excluding overlapping resources or remaining resources related to overlapping resources, the overlapping resources are resources where the first resource and the second resource overlap.

When the communication device is used as the network device in the foregoing embodiment, such as a base station, the processor 1102 generates first indication information, where the first indication information is used to instruct the terminal device to reserve the first resource; it is sent through the transceiver 1101 According to the first indication information, the processor 1102 further determines a third resource according to the first resource and the second resource, where the third resource is the value of the second resource excluding overlapping resources or related resources of overlapping resources The remaining resources, and receiving the uplink data sent by the terminal device in the third resource through the transceiver 1101.

Further, the functions to be implemented by the receiving unit 1001 and the transmitting unit 1003 in FIG. 10 may be implemented by the transceiver 1101 of the communication device, or implemented by the transceiver 1101 controlled by the processor 1102. What the processing unit 1002 is to implement The function can be implemented by the processor 1102.

In addition, the present application also provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in each embodiment of the data transmission method provided in the present application when the program is executed. The storage medium can be a magnetic disk, an optical disc, a read-only storage memory ROM, or a random storage memory RAM.

In the above-mentioned embodiments, all or part of it may be implemented by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part.

The computer program product includes one or more computer instructions, such as switching instructions. When the computer program is loaded and executed by the computer, all or part of the processes or functions described in the foregoing embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.

The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a network node, computer, server, or data center. Transmission to another site, computer or server via wired or wireless means.

The computer-readable storage medium may be any available medium that can be accessed by a computer or a storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, an optical medium (such as a DVD), or a semiconductor medium, such as a solid state hard disk, SSD, etc.

The terms "first", "second", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments described herein can be implemented in an order other than the content illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to the clearly listed Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

Those skilled in the art can clearly understand that the technology in the embodiments of the present application can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solutions in the embodiments of the present application can be embodied in the form of a software product in essence or a part that contributes to the prior art. The computer software product can be stored in a storage medium, such as ROM/RAM , Magnetic disks, optical disks, etc., including a number of instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments of the present invention.

The same or similar parts in the various embodiments in this specification can be referred to each other. In particular, for network equipment/nodes or device equipment, since it is basically similar to the method embodiment, the description is relatively simple, and for related parts, please refer to the description in the method embodiment.

The implementations of the application described above do not constitute a limitation on the protection scope of the application.

Claims (42)

A data transmission method, characterized in that the method includes: The terminal device receives first indication information from the network device, where the first indication information is used to indicate the first resource reserved by the terminal device; The terminal device determines a third resource according to the first resource and the second resource, the second resource is a resource used for the terminal device to send uplink data, and the third resource is removed from the second resource Overlapping resources or remaining resources of related resources of the overlapping resources, where the overlapping resources are resources where the first resource and the second resource overlap; The terminal device sends uplink data on the third resource. The method according to claim 1, wherein the terminal device determining the third resource according to the first resource and the second resource comprises: The terminal device determines the third resource according to the first resource and the second resource, and a transmission mode of uplink data, where the transmission mode of the uplink data is a converted precoding transmission mode. The method according to claim 1, wherein the terminal device determining the third resource according to the first resource and the second resource comprises: Determining, by the terminal device, the third resource according to the first resource, the second resource, and the uplink data transmission mode, where the third resource is the remaining resource in the second resource excluding the overlapping resource, The transmission mode of the uplink data is a non-converted precoding transmission mode. The method according to claim 1 or 2, wherein the overlapping resource includes at least one symbol in the time domain; wherein the related resource of the overlapping resource includes the at least one symbol in the time domain, and The frequency domain includes all frequency domain resources corresponding to the at least one symbol; The third resource is a remaining resource in the second resource excluding related resources of the overlapping resource. The method according to claim 1 or 2, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is a remaining resource excluding related resources of overlapping resources in the second resource, and the related resources of the overlapping resources include all frequency domain units corresponding to the first symbol; Wherein, the fourth resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit is It means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the first symbol. The method according to claim 1 or 2, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is the remaining resources of the second resource excluding related resources of overlapping resources, and the related resources of the overlapping resources include other frequency domains on the first symbol except the first continuous frequency domain unit unit; Wherein, the fourth resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit is Means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the first symbol; The first continuous frequency domain unit is the continuous frequency domain unit that occupies the largest resource on the first symbol in the fourth resource, or is the continuous frequency domain with the highest or lowest frequency on the first symbol in the fourth resource unit. The method according to claim 1, 2, 5 or 6, wherein the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is the remaining resource excluding the related resources of the overlapping resource in the second resource, and the related resource of the overlapping resource includes the overlapping resource on the second symbol; Wherein, the fourth resource does not have a non-contiguous frequency domain unit on the second symbol, and the fourth resource is the resource after removing the overlapping resource from the second resource, and the non-contiguous frequency domain unit It means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the second symbol. The method according to claim 1, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time unit in which the first symbol is located is First time unit The third resource is the remaining resource of the second resource excluding the related resources of the overlapping resource, and the related resource of the overlapping resource includes the first time unit where the first symbol is located in the time domain. The domain includes all frequency domain units corresponding to the first time unit; Wherein, the overlapping resource overlaps with the resource carrying the first reference signal in the first time unit, and/or the total number of symbols of the first symbol in the first time unit is greater than or equal to the first preset Value, or the number of consecutive first symbols in the first time unit is greater than or equal to a second preset value. The method according to claim 1 or 8, wherein the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time when the second symbol is located The unit is the second time unit; The third resource is a remaining resource excluding related resources of overlapping resources in the second resource, and the related resources of the overlapping resource include all frequency domain units corresponding to the second symbol in the frequency domain; Wherein, there is no overlap between the overlapping resource and the resource carrying the first reference signal in the second time unit; and/or, the total number of symbols of the second symbol in the second time unit is less than a first preset value, Or, the maximum value of the number of consecutive second symbols in the second time unit is less than the second preset value. The method according to any one of claims 1-9, wherein: The terminal device is a device with enhanced coverage or a device that performs multiple transmissions, and/or the number of times the terminal device performs repeated transmissions is greater than a preset number. A data transmission method, characterized in that the method includes: The network device generates first indication information, where the first indication information is used to instruct the terminal device to reserve the first resource; Sending, by the network device, the first indication information to the terminal device; The network device determines a third resource according to the first resource and the second resource, the second resource is a resource used for the terminal device to send uplink data, and the third resource is the second resource. Overlapping resources or remaining resources of related resources of the overlapping resources, where the overlapping resources are resources where the first resource and the second resource overlap; The network device receives the uplink data sent by the terminal device in the third resource. The method according to claim 11, wherein the network device determining the third resource according to the first resource and the second resource comprises: The network device determines the third resource according to the first resource, the second resource, and a transmission mode of uplink data, where the transmission mode of the uplink data is a converted precoding transmission mode. The method according to claim 11, wherein the network device determining the third resource according to the first resource and the second resource comprises: Determining, by the network device, the third resource according to the first resource, the second resource, and the uplink data transmission mode, where the third resource is the remaining resource from the second resource excluding the overlapping resource, The transmission mode of the uplink data is a non-converted precoding transmission mode. The method according to claim 11 or 12, wherein the overlapping resource includes at least one symbol in the time domain; wherein the related resource of the overlapping resource includes the at least one symbol in the time domain, and The frequency domain includes all frequency domain resources corresponding to the at least one symbol; The third resource is a remaining resource in the second resource excluding related resources of the overlapping resource. The method according to claim 11 or 12, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is a remaining resource excluding related resources of overlapping resources in the second resource, and the related resources of the overlapping resources include all frequency domain units corresponding to the first symbol; Wherein, the fourth resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit is It means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the first symbol. The method according to claim 11 or 12, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is the remaining resources of the second resource excluding related resources of overlapping resources, and the related resources of the overlapping resources include other frequency domains on the first symbol except the first continuous frequency domain unit unit; Wherein, the fourth resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit is Means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the first symbol; The first continuous frequency domain unit is the continuous frequency domain unit that occupies the largest resource on the first symbol in the fourth resource, or is the continuous frequency domain with the highest or lowest frequency on the first symbol in the fourth resource unit. The method according to claim 11, 12, 15 or 16, wherein the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is the remaining resource excluding the related resources of the overlapping resource in the second resource, and the related resource of the overlapping resource includes the overlapping resource on the second symbol; Wherein, the fourth resource does not have a non-contiguous frequency domain unit on the second symbol, and the fourth resource is the resource after removing the overlapping resource from the second resource, and the non-contiguous frequency domain unit It means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the second symbol. The method according to claim 11, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time unit in which the first symbol is located is First time unit The third resource is the remaining resource of the second resource excluding the related resources of the overlapping resource, and the related resource of the overlapping resource includes the first time unit where the first symbol is located in the time domain. The domain includes all frequency domain units corresponding to the first time unit; Wherein, the overlapping resource overlaps with the resource carrying the first reference signal in the first time unit, and/or the total number of symbols of the first symbol in the first time unit is greater than or equal to the first preset Value, or the number of consecutive first symbols in the first time unit is greater than or equal to a second preset value. The method according to claim 11 or 18, wherein the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time when the second symbol is located The unit is the second time unit; The third resource is a remaining resource excluding related resources of overlapping resources in the second resource, and the related resources of the overlapping resource include all frequency domain units corresponding to the second symbol in the frequency domain; Wherein, there is no overlap between the overlapping resource and the resource carrying the first reference signal in the second time unit; and/or, the total number of symbols of the second symbol in the second time unit is less than a first preset value, Or, the maximum value of the number of consecutive second symbols in the second time unit is less than the second preset value. The method according to any one of claims 11-19, wherein: The terminal device is a device with enhanced coverage or a device that performs multiple transmissions, and/or the number of times the terminal device performs repeated transmissions is greater than a preset number. A data transmission device, characterized in that the device includes: A receiving unit, configured to receive first indication information from a network device, where the first indication information is used to indicate a first resource reserved by the terminal device; A processing unit, configured to determine a third resource according to the first resource and the second resource, the second resource is a resource used for the terminal device to send uplink data, and the third resource is among the second resources Excluding overlapping resources or remaining resources related to overlapping resources, where the overlapping resources are resources where the first resource and the second resource overlap; The sending unit is configured to send uplink data on the third resource. The device according to claim 21, wherein: The processing unit is specifically configured to determine the third resource according to the first resource, the second resource, and a transmission mode of uplink data, where the transmission mode of the uplink data is a converted precoding transmission mode. The device according to claim 21, wherein: The processing unit is specifically configured to determine the third resource according to the first resource, the second resource, and a transmission mode of uplink data, where the third resource is the second resource excluding the overlapping resource Where the uplink data transmission mode is a non-converted precoding transmission mode. The apparatus according to claim 21 or 22, wherein the overlapping resource includes at least one symbol in the time domain; wherein the related resource of the overlapping resource includes the at least one symbol in the time domain, and The frequency domain includes all frequency domain resources corresponding to the at least one symbol; The third resource is a remaining resource in the second resource excluding related resources of the overlapping resource. The device according to claim 21 or 22, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is a remaining resource excluding related resources of overlapping resources in the second resource, and the related resources of the overlapping resources include all frequency domain units corresponding to the first symbol; Wherein, the fourth resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit is It means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the first symbol. The device according to claim 21 or 22, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is the remaining resources of the second resource excluding related resources of overlapping resources, and the related resources of the overlapping resources include other frequency domains on the first symbol except the first continuous frequency domain unit unit; Wherein, the fourth resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit is Means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the first symbol; The first continuous frequency domain unit is the continuous frequency domain unit that occupies the largest resource on the first symbol in the fourth resource, or is the continuous frequency domain with the highest or lowest frequency on the first symbol in the fourth resource unit. The apparatus according to claim 21, 22, 25 or 26, wherein the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is the remaining resource excluding the related resources of the overlapping resource in the second resource, and the related resource of the overlapping resource includes the overlapping resource on the second symbol; Wherein, the fourth resource does not have a non-contiguous frequency domain unit on the second symbol, and the fourth resource is the resource after removing the overlapping resource from the second resource, and the non-contiguous frequency domain unit It means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the second symbol. The apparatus according to claim 21, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time unit in which the first symbol is located is First time unit The third resource is the remaining resource of the second resource excluding the related resources of the overlapping resource, and the related resource of the overlapping resource includes the first time unit where the first symbol is located in the time domain. The domain includes all frequency domain units corresponding to the first time unit; Wherein, there is overlap between the overlapping resource and the resource carrying the first reference signal in the first time unit, and/or the total number of symbols of the first symbol in the first time unit is greater than or equal to the first time unit. The preset value, or the number of consecutive first symbols in the first time unit is greater than or equal to the second preset value. The device according to claim 21 or 28, wherein the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time when the second symbol is located The unit is the second time unit; The third resource is a remaining resource excluding related resources of overlapping resources in the second resource, and the related resources of the overlapping resource include all frequency domain units corresponding to the second symbol in the frequency domain; Wherein, there is no overlap between the overlapping resource and the resource carrying the first reference signal in the second time unit; and/or, the total number of symbols of the second symbol in the second time unit is less than the first preset Or, the maximum value of the number of consecutive second symbols in the second time unit is less than the second preset value. The device according to any one of claims 12-20, wherein the device is a device with enhanced coverage or a device that performs multiple transmissions, and/or the number of repeated transmissions is greater than a preset number. A data transmission device, characterized in that the device includes: A processing unit, configured to generate first indication information, where the first indication information is used to instruct the terminal device to reserve the first resource; A sending unit, configured to send the first indication information to the terminal device; The processing unit is further configured to determine a third resource according to the first resource and the second resource, the second resource is a resource for the terminal device to send uplink data, and the third resource is the first resource. (2) Remaining resources excluding overlapping resources or related resources of overlapping resources, where the overlapping resources are resources where the first resource and the second resource overlap; The receiving unit is configured to receive the uplink data sent by the terminal device in the third resource. The device of claim 31, wherein: The processing unit is specifically configured to determine the third resource according to the first resource, the second resource, and a transmission mode of uplink data, where the transmission mode of the uplink data is a converted precoding transmission mode. The device of claim 31, wherein: The processing unit is specifically configured to determine the third resource according to the first resource, the second resource, and a transmission mode of uplink data, where the third resource is the second resource excluding the overlapping resource Where the uplink data transmission mode is a non-converted precoding transmission mode. The device according to claim 31 or 32, wherein: The overlapping resource includes at least one symbol in the time domain; wherein the relevant resource of the overlapping resource includes the at least one symbol in the time domain, and includes all frequency domain resources corresponding to the at least one symbol in the frequency domain ； The third resource is a remaining resource in the second resource excluding related resources of the overlapping resource. The apparatus according to claim 31 or 32, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is a remaining resource excluding related resources of overlapping resources in the second resource, and the related resources of the overlapping resources include all frequency domain units corresponding to the first symbol; Wherein, the fourth resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit is It means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the first symbol. The apparatus according to claim 31 or 32, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is the remaining resources of the second resource excluding related resources of overlapping resources, and the related resources of the overlapping resources include other frequency domains on the first symbol except the first continuous frequency domain unit unit; Wherein, the fourth resource has a non-contiguous frequency domain unit on the first symbol, the fourth resource is the resource after the second resource removes the overlapping resource, and the non-contiguous frequency domain unit is Means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the first symbol; The first continuous frequency domain unit is the continuous frequency domain unit that occupies the largest resource on the first symbol in the fourth resource, or is the continuous frequency domain with the highest or lowest frequency on the first symbol in the fourth resource unit. The device according to claim 31, 32, 35 or 36, wherein the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain; The third resource is the remaining resource excluding the related resources of the overlapping resource in the second resource, and the related resource of the overlapping resource includes the overlapping resource on the second symbol; Wherein, the fourth resource does not have a non-contiguous frequency domain unit on the second symbol, and the fourth resource is the resource after removing the overlapping resource from the second resource, and the non-contiguous frequency domain unit It means that there is at least one frequency domain unit spaced between the first frequency domain unit and the second frequency domain unit on the second symbol. The apparatus according to claim 31, wherein the overlapping resource includes at least one first symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time unit in which the first symbol is located is First time unit The third resource is the remaining resource of the second resource excluding the related resources of the overlapping resource, and the related resource of the overlapping resource includes the first time unit where the first symbol is located in the time domain. The domain includes all frequency domain units corresponding to the first time unit; Wherein, the overlapping resource overlaps with the resource carrying the first reference signal in the first time unit, and/or the total number of symbols of the first symbol in the first time unit is greater than or equal to the first preset Value, or the number of consecutive first symbols in the first time unit is greater than or equal to a second preset value. The apparatus according to claim 31 or 38, wherein the overlapping resource includes at least one second symbol in the time domain and at least one frequency domain unit in the frequency domain, and the time when the second symbol is located The unit is the second time unit; The third resource is a remaining resource excluding related resources of overlapping resources in the second resource, and the related resources of the overlapping resource include all frequency domain units corresponding to the second symbol in the frequency domain; Wherein, there is no overlap between the overlapping resource and the resource carrying the first reference signal in the second time unit; and/or, the total number of symbols of the second symbol in the second time unit is less than a first preset value, Or, the maximum value of the number of consecutive second symbols in the second time unit is less than the second preset value. The apparatus according to any one of claims 31-39, wherein the terminal device is a device with enhanced coverage or a device that performs multiple transmissions, and/or the number of repeated transmissions by the terminal device is greater than The preset number of times. A communication device includes a processor and a memory, the processor is coupled with the memory, and is characterized in that: The memory is used to store instructions; The processor is configured to execute instructions in the memory, so that the communication device executes the method according to any one of claims 1 to 20. A computer-readable storage medium with instructions stored in the storage medium, characterized in that, when the instructions are executed, the method according to any one of claims 1 to 20 is implemented.

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