WO2018202043A1

WO2018202043A1 - Data transmission method, device, and system

Info

Publication number: WO2018202043A1
Application number: PCT/CN2018/085347
Authority: WO
Inventors: 焦淑蓉; 卢亚伟; 张鹏
Original assignee: 华为技术有限公司
Priority date: 2017-05-05
Filing date: 2018-05-02
Publication date: 2018-11-08
Also published as: CN108811112B; CN108811112A

Abstract

Provided in the present application is a data transmission method, comprising: a first terminal device receiving a control message sent by an access network device, the control message being used to indicate that the first terminal device performs uplink transmission on a first resource; the first terminal device acting on a second resource, so as to detect a first indicator in a first period, said first period being smaller than a first scheduling time unit, said first scheduling time unit being a scheduling time unit of the first terminal device, and said second resource being part or all of the first resource; when a first indicator that it is permitted for the first terminal device to perform uplink transmission is detected, the first terminal device beginning uplink transmission on the second resource. The described method makes uplink resource use more flexible, and given that signaling overhead of the specified indicator is significantly lower relative to that of a scheduling signal, the present method does not excessively increase mobile communications system overhead.

Description

Data transmission method, device and system

Technical field

The present application relates to wireless communication technologies, and in particular, to a communication method, device and system related to data transmission.

Background technique

With the development of mobile communication technologies, various new services (application scenarios) have emerged. For example, enhanced mobile broadband (eMBB) services and ultra reliable and low latency communications (URLLC) services. Typical eMBB services include: ultra high definition video, augmented reality (AR), virtual reality (VR), etc. The main features of these services are large amount of transmitted data and high transmission rate. Typical URLLC services include: wireless control in industrial manufacturing or production processes, motion control of driverless cars and drones, and tactile interaction applications such as remote repair and remote surgery. The main features of these services are ultra-reliable. Sex, low latency, less data transfer and burstiness.

Due to the different characteristics of the eMBB service and the URLLC service, the requirements for the communication system are also different. For example, the URLLC service is bursty, and in order to meet the low latency requirement of the URLLC service, the access network device cannot wait for the eMBB service with a large amount of data to complete the scheduled data transmission, and then schedule the transmission of the burst URLLC service. . Therefore, there is an urgent need to solve the problem of coexistence between two different types of services, for example, eMBB services and URLLC services.

Summary of the invention

The embodiment of the present application provides a method, device and system for data transmission.

In one aspect, an embodiment of the present application provides a data transmission method, where the method includes: a first terminal device receives a control message sent by an access network device, where the control message is used to indicate the first The terminal device performs uplink transmission on the first resource; the first terminal device detects the first indication in the first period for the second resource, where the first period is smaller than the first scheduling time unit, and the first scheduling time unit a scheduling time unit of the first terminal device, where the second resource is part or all of the first resource; when the first indication that the first terminal device is permitted to perform uplink transmission is detected, The first terminal device starts uplink transmission on the second resource.

In a possible design, the second resource is located in a transmission coexistence area of the first terminal device and the second terminal device, and the first period is at least one second scheduling time unit, and the second scheduling time is The unit is a scheduling time unit of the second terminal device, where the first indication corresponds to a third resource, the third resource is part of the second resource, and the length of the third resource in the time domain is The first period begins: the first terminal starts uplink transmission on the second resource, and the first terminal starts uplink transmission on the third resource.

Optionally, the second resource corresponds to the N first time periods in the time domain, where N is an integer greater than or equal to 2, and the first terminal device detects the first period for the second resource. An indication includes: the first terminal device detecting the first indication in the first N-1 first periods.

In another possible design, the second resource is located in a transmission coexistence area of the first terminal device and the second terminal device, and the second resource is a scheduling resource allocated to the second terminal device, The first period is at least one second scheduling time unit, the second scheduling time unit is a scheduling time unit of the second terminal device, and the first terminal starts uplink transmission on the second resource, The method includes: the first terminal starts uplink transmission on the fourth resource, and the fourth resource is part or all resources of resources on the second resource that are not used by the second terminal device.

Optionally, the first indication is an acknowledgement response indicating that the second terminal device completes the correct transmission on the second resource.

In combination with all the possible designs and the optional implementations described above, optionally, the first indication that the first terminal device is permitted to perform uplink transmission is detected, including: the first terminal receives the first indication .

Alternatively, in combination with all possible designs and optional implementations in the foregoing first aspect, optionally, the first indication that the first terminal device is permitted to perform uplink transmission is detected, including: receiving, by the first terminal The first indication, the first indication includes a first bit, and the value of the first bit is a predetermined value.

Alternatively, in combination with all possible designs and optional implementations in the foregoing first aspect, optionally, the first indication that the first terminal device is permitted to perform uplink transmission is detected, including: receiving, by the first terminal The first indication, the first indication includes a second bit, and the value of the second bit is inverted relative to a second bit included in the first indication received in a previous cycle.

In combination with all possible designs and all optional implementations in the foregoing first aspect, the first indication is specific to the first terminal device or shared by a terminal device group in which the first terminal device is located.

In combination with all possible designs in the foregoing first aspect, and all optional implementations, the first indication corresponds to a terminal device group in which the second terminal device is located, or corresponds to the second resource.

In combination with all possible designs in the first aspect above, and all optional implementations, the control message includes format information for uplink transmission on the first resource.

In combination with all possible designs in the foregoing first aspect, and all optional implementations, the control message includes information indicating a size of the first period, channel information of the first terminal device detecting the first indication, The first terminal device detects at least one of a time zone or a frequency domain region of the first indication; or information of the first cycle size, the first terminal device detects the first indicated channel information, The detecting, by the first terminal device, at least one of the first indication time region or the frequency domain region may be received by the first terminal device in other high layer signaling or physical layer signaling.

In combination with all possible designs in the above first aspect and all optional implementations, the first terminal is an enhanced mobile broadband eMBB terminal device, and the second terminal device is a highly reliable low latency communication URLLC terminal device.

On the other hand, the embodiment of the present application provides a data transmission method, including: the access network device sends a control message to the first terminal device, where the control message is used to indicate that the first terminal device is on the first resource. Performing uplink transmission; when the access network device confirms that the second resource is available in the first period, the access network device sends permission to the second terminal device that the first terminal device is on the second resource Performing the first indication of the uplink transmission, where the first period is smaller than the first scheduling time unit, the first scheduling time unit is a scheduling time unit of the first terminal device, and the second resource is part Or all the first resources; the access network device receives the uplink transmission of the first terminal device on the second resource.

In a possible design, the second resource is located in a transmission coexistence area of the first terminal device and the second terminal device, and the first period is at least one second scheduling time unit, and the second scheduling time is The unit is a scheduling time unit of the second terminal device, where the first indication corresponds to a third resource, the third resource is a part of the second resource, and the length of the third resource in the time domain is Receiving, by the access network device, the uplink transmission of the first terminal device on the second resource, where the access network device receives the first terminal device on the third resource Uplink transmission.

In another possible design, the first indication that the first terminal device is permitted to perform uplink transmission is that the first indicated transmission power is greater than zero; or the permitting the first terminal device The first indication of performing the uplink transmission is that the first indication includes a first bit, and the value of the first bit is a predetermined value; or the device that allows the first terminal device to perform uplink transmission The first indication is that the first indication includes a second bit, and the value of the second bit is inverted relative to the value of the second bit in the first indication received in the previous cycle.

In another possible design, the first indication is dedicated to the first terminal device or shared by the terminal device group where the first terminal device is located.

In another possible design, the control message includes format information for uplink transmission on the first resource.

In another possible design, the control message includes information indicating a size of the first period, channel information of the first terminal device that is detected by the first terminal device, and the first terminal device detects the At least one of an indicated time zone or a frequency domain zone; or information of the first cycle size, the first terminal device detecting the first indicated channel information, the first terminal device detecting the At least one of the first indicated time zone or the frequency domain zone may be included in the other higher layer signaling or physical layer signaling to be sent to the first terminal device.

In yet another possible design, the first terminal is an enhanced mobile broadband eMBB terminal device, and the second terminal device is a highly reliable low latency communication URLLC terminal device.

On the other hand, an embodiment of the present application provides a data transmission method, where the method includes:

The access network device sends a control message to the first terminal device, where the control message is used to indicate that the first terminal device performs uplink transmission on the first resource;

For the second resource, when the access network device correctly receives the uplink transmission of the second terminal device on the second resource, the access network device sends a transmission permission to the first terminal to the first terminal device. The first indication that the device performs uplink transmission on the second resource, where the second resource is part or all of the first resource, and the second resource is allocated to the second terminal device The scheduling network device receives the uplink transmission of the first terminal device on the second resource.

In a possible design, the access network device receives the uplink transmission of the first terminal device on the second resource, where the access network device receives the first resource on a fourth resource. Uplink data of the terminal device, where the fourth resource is part or all of the resources on the second resource that are not used by the second terminal device. .

In a possible design, the first indication is an acknowledgment response indicating that the second terminal device completes the correct transmission on the second resource.

In one possible design, in another possible design, the control message includes format information for uplink transmission on the first resource.

In a possible design, the control message includes information indicating a size of the first period, the first terminal device detects channel information of the first indication, and the first terminal device detects the first At least one of the indicated time zone or the frequency domain zone; or information of the first cycle size, the first terminal device detecting the first indicated channel information, and the first terminal device detecting the first At least one of the indicated time zone or the frequency domain zone may be included in the other higher layer signaling or physical layer signaling to be sent to the first terminal device.

In a possible design, the first terminal is an enhanced mobile broadband eMBB terminal device, and the second terminal device is a highly reliable low latency communication URL LC terminal device.

In another possible design, the first indication that the first terminal device is permitted to perform uplink transmission on the second resource is that the first indicated transmission power is greater than zero; or the permission office The first indication that the first terminal device performs uplink transmission is that the first indication includes a first bit, and the value of the first bit is a predetermined value; or, the permitting the first terminal device The first indication of performing uplink transmission is that the first indication includes a second bit, and the value of the second bit is relative to a second bit of the first indication received in a previous cycle. The value was flipped.

In another possible design, the first indication corresponds to a terminal device group in which the second terminal device is located, or corresponds to the second resource.

On the other hand, the embodiment of the present application provides a communication device. The communication device can be used to implement the methods disclosed in any of the above aspects. The communication device can be a terminal device, an access network and a device, or a baseband chip, or a data signal processing chip, or a general purpose chip.

In one possible design, the communication device includes a processor. The processor is for performing the functions of the various parts of any of the above aspects.

In one possible design, the transmitting device includes a processor and a memory. The memory is for storing a program implementing the method of any of the above aspects, the processor being operative to run the above program to implement the method of any of the above aspects.

Optionally, the above communication device may include a transceiver.

In another aspect, the embodiment of the present application provides a communication system, where the system includes the first terminal device and the access network device described in the foregoing aspects.

The optional communication system further includes the second terminal device involved in the above aspect.

In a further aspect, the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the first terminal device, which includes a program designed to perform the above aspects.

In a further aspect, the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the access network device, which includes a program designed to perform the above aspects.

In the embodiment of the present application, the terminal device performs data transmission on the premise that the terminal allocates a certain resource for transmission, and the terminal device detects the specific indication for the detection of the specific indication when the terminal device is allowed to perform the uplink transmission. The utilization of uplink resources is made more flexible, and since the signaling overhead of the specific indication is much smaller than the scheduling signaling, the overhead of the mobile communication system is not excessively increased.

DRAWINGS

FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

2 is a structural diagram of a terminal device according to an embodiment of the present application;

FIG. 3 is a structural diagram of an access network device according to an embodiment of the present application;

4 is an interaction flowchart of a data transmission method according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a relationship between resources, periods, and indications according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another relationship between resources, periods, and indications according to an embodiment of the present application;

FIG. 7 is a structural diagram of a device of a communication device according to an embodiment of the present application.

detailed description

The international telecommunication union (ITU) defines three types of services for mobile communication systems: eMBB services, URLLC services, and mass machine type communications (mMTC) services.

Typical eMBB services include: ultra high definition video, augmented reality (AR), virtual reality (VR), etc. The main features of these services are large amount of transmitted data and high transmission rate. Typical URLLC services include: wireless control in industrial manufacturing or production processes, motion control of driverless cars and drones, and tactile interaction applications such as remote repair and remote surgery. The main features of these services are ultra-reliable. Sex, low latency, less data transfer and burstiness. Typical mMTC services include: smart grid distribution automation, smart city, etc. The main features are huge number of networked devices, small amount of transmitted data, and insensitive data transmission delay. These mMTC terminals need to meet low cost and very long standby. The demand for time.

The coexistence of the above services brings a lot of challenges to the design of mobile communication systems. In particular, the coexistence problem between the URLLC service and the eMBB service is particularly prominent.

On the one hand, as mentioned before, the generation of data packets of the URLLC service is bursty and random, and may not generate data packets for a long period of time, or may generate multiple data packets in a short time. The packets of the URLLC service are in most cases small packets, for example 50 bytes. The characteristics of the data packets of the URLLC service affect the way resources are allocated by the communication system. The resources herein include but are not limited to: time domain symbols, frequency domain resources, time-frequency resources, codeword resources, and beam resources. Generally, the allocation of system resources is performed by the access network device. The following uses the access network device as an example for description.

Further, the main feature of the URLLC service is that it requires ultra-high reliability and low latency: the transmission delay is required to be within 0.5 milliseconds (millisecond, ms) without considering reliability; and the reliability is 99.999%. The transmission delay is required to be within 1ms. In a long term evolution (LTE) system, the minimum scheduling time unit is a transmission time interval (TTI) of 1 ms duration. In order to meet the transmission delay requirement of the URLLC service, the data transmission of the wireless air interface can use a shorter scheduling time unit, for example, using a mini-slot or a larger sub-carrier interval as the minimum scheduling time. unit. Wherein, a mini-slot includes one or more time domain symbols, where the time domain symbols may be orthogonal frequency division multiplexing (OFDM) symbols. For a time slot with a subcarrier spacing of 15 kilohertz (kilohertz, kHz), including 6 or 7 time domain symbols, the corresponding time length is 0.5 ms; for a time slot with a subcarrier spacing of 60 kHz, the corresponding time The length is shortened to 0.125ms. The URLLC service data usually adopts a shorter time scheduling unit to meet the requirements of ultra-short delay, for example, two time domain symbols with 15 kHz subcarrier spacing, or one time slot with 60 kHz subcarrier spacing, corresponding to seven time slots. The domain symbol, the corresponding length of time is 0.125ms.

On the other hand, the eMBB service has a large amount of data and a high transmission rate. Therefore, a long scheduling time unit is usually used for data transmission to improve transmission efficiency. For example, one time slot with 15 kHz subcarrier spacing is used, corresponding to 7 times. The domain symbol, the corresponding length of time is 0.5ms.

In combination with the characteristics of the URLLC service and the eMBB service, for the downlink data transmission, due to the burstiness of the data of the URLLC service, in order to improve the system resource utilization, the access network device usually does not reserve resources for the downlink data transmission of the URLLC service. When the URLLC service data arrives at the access network device, if there is no idle time-frequency resource at this time, the access network device cannot wait for the scheduled transmission of the eMBB service data to complete after the short-latency delay of the URLLC service is satisfied. The URLLC service data is scheduled. The access network device can allocate resources for URLLC service data in a preemption manner. The preemption here means that the access network device selects part or all of the time-frequency resources for transmitting the URLLC service data on the allocated time-frequency resources for transmitting the eMBB service data, and the access network device is used for transmitting the URLLC service. The data of the eMBB service is not transmitted on the time-frequency resource of the data.

For the uplink data transmission, the traditional scheduling process is that the terminal device first sends a scheduling request, and the access network device sends a scheduling permission to the terminal device after receiving the scheduling request, and the terminal device needs a period of time according to the information in the scheduling permission after receiving the scheduling permission. The uplink data is prepared before the uplink data can be sent. That is to say, compared with the direct scheduling process of the access network device in the downlink data transmission, the uplink data transmission increases the time for the terminal device to send the scheduling request and the time for the terminal device to prepare the uplink data according to the scheduling permission, which increases the delay and is not conducive to the URLLC. Low latency requirements for the business.

For this reason, a solution is to use a schedule-free manner for the uplink data transmission of the URLLC service, that is, the access network device pre-configures the URLLC resource of the uplink data transmission for the terminal device, thereby reducing the delay.

However, due to the suddenness and randomness of the data of the URLLC service, this method of reserving resources obviously makes the resource utilization of the communication system low.

Another solution is to use the same scheduling time granularity for the eMBB service and the URLLC service, that is, the scheduling time unit size of the eMBB service can be defined as the same as the URLLC service, so that the access network device can perform more flexible scheduling. For example, the data of the two services is scheduled on different time-frequency resources.

In this way, the terminal device that performs the data transmission of the eMBB service detects the scheduling signaling sent by the access network device at a relatively high frequency, and the data amount of the scheduling signaling is large, so that the overhead of the entire mobile communication system and the eMBB are performed. The power consumption of the terminal device for service data transmission becomes large.

In order to solve the problem caused by the coexistence of the foregoing URLLC service and the eMBB service, in the embodiment of the present application, the terminal device detects the specific indication for the segment resource under the premise that the terminal allocates a certain resource for transmission, and detects the permission. When the terminal device performs the specific indication of the uplink transmission, the data transmission is performed, so that the utilization of the uplink resource is more flexible, and since the signaling overhead of the specific indication is much smaller than the scheduling signaling, the mobile communication system is not excessively increased. s expenses.

The following describes the system operating environment of the present application. The technology described in this application can be applied to the LTE system, or other wireless communication systems using various radio access technologies, for example, using code division multiple access (CDMA). Frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (single) A system of access technologies such as carrier-frequency division multiple access (SC-FDMA) is also applicable to subsequent evolved systems, such as a fifth generation 5G (also referred to as a new radio (NR)) communication system. As shown in FIG. 1, the communication system includes an access network device 120 and a plurality of terminal devices (e.g., terminal device 140 and terminal device 160 of FIG. 1). The terminal device is connected to the radio access network device in a wireless manner. The terminal device can be fixed or mobile. FIG. 1 is only a schematic diagram. The communication system may further include other network devices, such as a core network device, a relay device, and a backhaul device, which are not shown in FIG. 1. The embodiment of the present application does not limit the number of line access network devices and terminal devices included in the communication system.

The access network device is an access device that the terminal device accesses to the mobile communication system by using a wireless device, and may be a base station NodeB, an evolved base station eNodeB, a base station in a 5G mobile communication system, a base station in a future mobile communication system, or a WiFi. The specific technology and the specific device configuration adopted by the radio access network device are not limited in the embodiment of the present application.

The terminal device may also be referred to as a terminal terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), and the like. The terminal device can be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, and an industrial control (industrial control). Wireless terminal, wireless terminal in self driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless in transport safety A terminal, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.

Access network equipment and terminal equipment can be deployed on land, indoors or outdoors, hand-held or on-board; they can also be deployed on the water; they can also be deployed on airborne aircraft, balloons and satellites. The application scenarios of the radio access network device and the terminal device are not limited.

The embodiments of the present application are mainly applicable to uplink data transmission. For uplink data transmission, the sending device is a terminal device, and the corresponding receiving device is an access network device. The embodiment of the present application does not limit the transmission direction of the control signaling.

The access network device and the terminal device and between the terminal device and the terminal device can communicate through a licensed spectrum, or can communicate through an unlicensed spectrum, or can simultaneously pass the licensed spectrum and the license-free. The spectrum communicates. The access network device and the terminal device can communicate with the spectrum below 6G, or communicate with the spectrum of 6G or higher, and can also use the spectrum below 6G and the spectrum of 6G or higher for communication. The embodiment of the present application does not limit the spectrum resources used between the access network device and the terminal device.

The terminal device 130 or the terminal device 160 as described above may be used in the terminal device 200 shown in FIG. 2 to perform related to the terminal device (the first terminal device or the second terminal device) in various embodiments involved in the present application. Method steps. As shown in FIG. 2, the terminal device 200 includes a processing unit 210 and a transceiver unit 220. The access network device as described above may be the access network device 300 as shown in FIG. 3, for performing the method steps related to the access network device in various embodiments involved in the present application. As shown in FIG. 3, the access network device 300 includes a processing unit 310 and a transceiver unit 320. It should be noted that the operations performed by the processing unit 210 or the transceiver unit 220 can be regarded as the operation of the terminal device 200, and the operations performed by the processing unit 310 or the transceiver unit 320 can be regarded as an access network. The operation of device 300. The processing unit 310 in the access network device 300 may be implemented by a processor of the access network device 300, and the transceiver unit 320 may be implemented by a transceiver in the access network device 300; processing in the terminal device 200 Unit 210 may be implemented by a processor in terminal device 200, which may be implemented by a transceiver in terminal device 200.

The following is a description of the nouns involved in this application.

Resource

It can be a time-frequency resource, a resource block (RB), a resource element (RE), a code block (CB), a CB group (CB group), a symbol, a slot. Or mini slot (mini slot) as a unit. This application focuses on the time domain portion of the resource.

Scheduling time unit

It refers to the length of time, which may be the time unit for transmitting block scheduling in the communication system, for example, in the LTE system, it is TTI, in NR, it may be slot or mini slot or aggregation of multiple slots, and so on. The size of the scheduling time unit is not limited in this application.

Embodiment 1

An embodiment of the present application provides an interaction flowchart of a data transmission method. As shown in FIG. 4, the method includes:

401. The access network device sends a control message to the first terminal device, where the control message is used to indicate that the first terminal device performs uplink transmission on the first resource.

The first terminal device receives the control message sent by the access network device.

The first terminal device detects the first indication by using the first period, where the first period is smaller than the first scheduling time unit, and the first scheduling time unit is the first terminal device. a scheduling time unit, wherein the second resource is part or all of the first resource.

403. When the access network device confirms that the second resource is available in a first period, or when the access network device correctly receives uplink transmission data of the second terminal on the second resource, the connecting The network device sends the first indication that the first terminal device performs uplink transmission;

404. When detecting the first indication that the first terminal device is permitted to perform uplink transmission, the first terminal device starts uplink transmission on the second resource.

With reference to FIG. 1, the access network device may be the access network device 120, and the first terminal device may be the terminal device 140, and the first terminal device transmits the uplink service type to the first service, and the first service It can be a non-emergency or low priority service, for example, eMBB service. The second terminal device may be the terminal device 160. The service type that the terminal device 160 transmits in the uplink is the second service, and the second service may be an emergency or a high priority service, such as a URLLC service. The first scheduling time unit is a scheduling time unit of the first terminal device, and the second scheduling time unit is a scheduling time unit of the second terminal device. In this embodiment, the first scheduling time unit is greater than the second scheduling time unit. For example, the first scheduling time unit may be a slot, and the second scheduling time unit may be a mini slot; or the first scheduling time unit may be slot aggregation. Multiple time slots, and the second scheduling time unit may be a single slot or a mini slot.

The control message in 401 may include uplink grant (UL grant) information. The control message may include format information that is uplinked by the first resource. For example, at least one of a transport block (TB), a modulation and coding scheme (MCS), a redundancy version (RV), a new data indication, and a power indication.

The first resource is a resource that the access network device 120 allocates to the terminal device 240 for uplink transmission by using a control message. In the time domain, the first resource may be an integer multiple of the first scheduling time unit. The second resource is located in the transmission coexistence area of the terminal device 140 and the terminal device 160, that is, the terminal device 140 and the terminal device 160 may perform data transmission on the second resource, so there is a possibility of transmission conflict. .

The first terminal device in the 402 detects the first indication in the first period, that is, the first terminal device periodically detects the first indication, where the period is the first period. The first period is smaller than the first scheduling time unit, and the first period is at least one second scheduling time unit, that is, the size of the first period is the first The second scheduling time unit is an integer multiple of the size. The information related to the first period and the information related to the first indication may be obtained by the first terminal device by using a pre-agreed protocol, or may be notified by the access network device to the A terminal device, for example, is carried in the control message and sent to the first terminal device or configured to the first terminal device through high layer signaling. The first period related information includes at least one of a size of the first period, a starting position of each of the first periods, and the like. The information related to the first indication includes detecting a resource location of the channel of the first indication, for example, detecting at least one of a time zone of the first indication, detecting a frequency zone of the first indication, and the like.

The following embodiments will introduce the present embodiment in more detail in conjunction with specific application scenarios.

Embodiment 2

The embodiment of the present invention is based on the first embodiment, and may include all the contents of the first embodiment, and the embodiment of the present invention may be applied to the following specific scenario: the first terminal device needs to perform uplink transmission to the access network device, and the connection is performed. The network access device schedules the first terminal device to perform uplink transmission on the first resource. In this embodiment, the first resource may be located in a coexistence area of the first terminal device and the second terminal device, and the second resource is all the first resources, that is, the second resource. That is the first resource. Or the first resource and the second resource are overlapped in a time domain, that is, the second resource is part of the first resource.

In addition, in this embodiment, the access network device may meet the uplink transmission requirement of the second terminal device according to a scheduling manner.

In response to the uplink transmission request of the first terminal device, the access network device sends a control message to the first terminal device, indicating that the first terminal device can perform uplink transmission on the first resource. However, since the second resource is located in a coexistence area of the first terminal device and the second terminal device, scheduling for the second resource is different from scheduling in the prior art, that is, a transmission mode that can be transmitted. It can be said that it is a kind of pre-scheduling, that is, even if the access network device allocates the first resource to the first terminal device for uplink transmission, the first terminal device cannot be in the Performing uplink transmission on the first resource, whether the first terminal device can actually perform uplink transmission on the second resource included in the first resource, and further satisfying other conditions. 401 is only a necessary insufficient condition for the first terminal device to transmit on the second resource. Optionally, in the control message or the high-layer signaling sent by the access network device to the first terminal device, the second information may be included, where the second information is used to refer to the control message pair. The scheduling of the first terminal on the first resource is resource pre-scheduling. When receiving the second information, the first terminal device knows that the subsequent communication process further needs to detect the first indication to confirm whether uplink transmission is performed on the first resource.

As described above, in the foregoing embodiment, after receiving the control message, the first terminal device is still unable to determine whether the uplink transmission is actually performed on the second resource, and further conditions are required to be met. The first terminal device must also detect the first indication, where the first indication may correspond to a third resource, and the third resource is a part of the first resource, which is equal to the first in the time domain. cycle. The first resource may include N third resources in a time domain. The value of N is generally a positive integer greater than or equal to 2.

The first terminal device may detect the first indication by using at least one of the second scheduling time units (ie, the first period) as a time granularity, where the first indication is used to indicate the third resource corresponding thereto Whether uplink transmission is possible. As an implementation manner, when the access network device confirms that the third resource is idle, that is, the segment is not allocated to the second terminal device for uplink transmission, the access network The device may send a first indication corresponding to the third resource to the first terminal device, where the first indication is a first indication that the first terminal device is permitted to perform uplink transmission. Correspondingly, if the terminal device detects the first indication that the first terminal device is permitted to perform uplink transmission, the first terminal device performs uplink transmission on the third resource corresponding to the first indication.

Further, an example of detecting the first indication that the first terminal device is permitted to perform uplink transmission is illustrated by:

Example 1: The first indication that the first terminal device is permitted to perform uplink transmission is that the first terminal device receives the first indication. For example, if the first terminal device detects that the power of the first indication is greater than 0, it indicates that the first terminal device is allowed to perform uplink transmission, and correspondingly, the power of the first indication is equal to 0, indicating that the first terminal device is not allowed. Perform uplink transmission.

The first indication may be a sequence that the access network device pre-configures to the first terminal device, for example, a random sequence or a predetermined pattern sequence, and the sequence may be dedicated to the first terminal device, that is, UE-specific ( The UE-specific may also be shared by a group of terminal devices, that is, group-common, or may be shared by terminal devices in the entire cell.

Example 2: detecting that the first indication that the first terminal device is permitted to perform uplink transmission is that the first terminal device receives the first indication, and the first indication includes a first bit, where The value of the bit is a predetermined value. The predetermined value may be "0" or "1" as long as a predetermined agreement is made. Correspondingly, if the first indication is not received, or although the first indication is detected but the value of the first bit included in the first indication is not a predetermined value, it indicates that the first terminal device is not allowed to perform. Uplink transmission.

The value of the first bit, corresponding to "0" or "1", may respectively correspond to two sequences pre-configured by the access network device to the first terminal device, for example, a random sequence or a predetermined pattern. sequence. Or the access network device may only be pre-configured to the first terminal device in a sequence, and the "0" value and the "1" value of the bit are corresponding by the inversion of the sequence. The sequence configured by the access network device to the first terminal device may be specific to the first terminal device, that is, UE-specific, or may be shared by a group of terminal devices, that is, group-common, or may be Shared by terminal devices in the whole cell.

Example 3: detecting that the first indication that the first terminal device is permitted to perform uplink transmission is that the first terminal device receives the first indication, and the value of the bit included in the first indication is relatively The first indication received in the previous cycle is flipped or not flipped.

The first indication may be a sequence that the access network device pre-configures to the first terminal device, for example, a random sequence or a predetermined pattern sequence, and the sequence may be dedicated to the first terminal device, that is, UE-specific It can also be shared by a group of terminal devices, that is, group-common, or shared by terminal devices in the whole cell.

As an implementation manner, the first indication may be located in a specific channel, or may be carried in a power control command, and the power control command may be sent to the first terminal device at a granularity of the first period. When the first indication is located on a specific channel, the access network device and the first terminal device may pre-agreed the location of the specific channel by using a protocol, or as described in Embodiment 1, the access network device passes the Or, the control message notifies the location of the particular channel to the first terminal device.

Because the first resource includes multiple the first period in the time domain, the first terminal device may detect a plurality of the first indications for the first resource, such that the first resource According to the detection result, a terminal device can determine, on the first resource, which time period in the time domain range can be uplink transmission, and which time period cannot perform uplink transmission. The first terminal device may set the transmit power to zero when uplink transmission is not possible.

As an implementation manner, in the time domain, in the first first period of starting detection, the first terminal device may directly perform uplink transmission without detecting the first indication. If the access network device pre-schedules the first resource, the resource whose length is equal to the first period is simultaneously scheduled by the access network device for the second terminal device. The possibility of uplink transmission is very small. This saves the overhead of the system.

The first terminal device may calculate, by using information related to the first period in the control message, the resource location of the first indication detected in each first period; or may adopt a protocol preset value or a high layer signaling Configuring information related to the first period in the message to calculate a resource location of the first indication required to be detected in each first period; and directly detecting, by using the information related to the first indication, the first indication Resource location. For example, it may be that the first terminal device may detect the first indication at a time position starting from the first period, and the third resource corresponding to the first indication is backward in a time domain. In the position with the first cycle.

As shown in FIG. 5, as an example, the first period is one of the second scheduling time units, the first resource is the second resource, and the second resource includes four in the time domain. In the first period, the length of the third resource corresponding to the first indication is one of the second scheduling time units.

The access network device sends a control message to the first terminal device, where the control message may include UL grant information, where the control message carries information indicating that the control message is a resource pre-scheduling. In the first period 1, the first terminal device does not need to monitor the first indication 1, and performs uplink transmission directly on the third resource 1. The first terminal device detects the first indication 2 on the monitoring time zone corresponding to the first period 2 and the monitoring channel. Because on the third resource 2, in order to meet the requirement of the second terminal device to perform uplink transmission, the access network device schedules it to the second terminal device for uplink transmission, so the access network device will not The first terminal device sends the first indication 2, and the first terminal device cannot detect the first indication 2. Therefore, on the third resource 2, the first terminal device does not perform uplink transmission. For the same reason, the terminal device does not perform uplink transmission on the third resource 3. For the first period 4, because the second terminal device does not need uplink transmission at this time, the access network device confirms that the resource on the third resource 4 is idle, so the monitoring time area and monitoring in the first period 4 A first indication 4 is sent to the first terminal device on the channel. When the first terminal device 4 detects the first indication 4, it is confirmed that the transmission conflict does not occur on the third resource 4, and the uplink transmission is started on the third resource 4.

In the technical solution provided by the embodiment of the present application, the access network device pre-schedules the first resource to the first terminal device, and periodically detects the first indication on the first resource of the first terminal device, and when the permission is detected, the first When the terminal device performs the first indication of the uplink transmission, performing uplink data transmission on the first resource and the third resource corresponding to the first indication, thereby effectively avoiding the problem of transmission conflict during coexistence, and improving the problem The efficiency of communication.

Embodiment 3

The embodiment of the present application is based on the first embodiment, and may include all the contents of the first embodiment, and the embodiment of the present invention may be applied to the following specific scenarios:

The first terminal device needs to perform uplink transmission to the access network device, and the access network device schedules the first terminal device to perform uplink transmission on the first resource.

In addition, in this embodiment, the second resource is pre-allocated by the access network device to the second terminal device for uplink transmission, that is, the second terminal device adopts an unscheduled manner in the The uplink resource is transmitted on the second resource, or the second resource is a non-scheduled resource of the second terminal. The access network device adopts semi-static signaling (such as radio resource control (RRC) signaling) and dynamic signaling (for example, a media access control-control element, MAC-CE)) or static mode (protocol agreed upon) to configure the second resource to the second terminal device. Optionally, the information that the second resource is pre-configured to the second terminal is also notified to the first terminal device by using one of the foregoing three manners.

As an implementation manner, the second terminal device performs uplink transmission by using a retransmission manner on the second resource, where the repeated time granularity may be a scheduling time unit of the second terminal device, that is, The second scheduling time unit is described. The number K of repeated transmissions may be pre-configured by the access network device and notified to the second terminal device. The purpose of performing the repeated transmission is to ensure that the access network device can correctly receive the data transmitted by the second terminal device on the second resource.

However, on the second resource, the second terminal device may perform L repeated transmissions, and the access network device correctly receives the data transmitted by the second terminal device. Where L is less than K, the first terminal device can perform uplink transmission without causing collision on the remaining resources of the second resource. Above K and L are positive integers.

Similar to the second embodiment, in response to the uplink transmission request of the first terminal device, the access network device sends a control message to the first terminal device, indicating that the first terminal device can perform on the first resource. Uplink transmission. However, since at least part of the resources in the first resource, that is, the second resource, is located in a coexistence area of the first terminal device and the second terminal device, the scheduling is different on the second resource. The scheduling method in the prior art is similar to the pre-scheduling in the second embodiment. For the specific expression, refer to the related description in the second embodiment. In the control message, the second information may be included, where the second information is used to indicate that the scheduling of the control message on the first resource by the first terminal is resource pre-scheduling; or, when the A terminal device learns that the second resource is pre-configured to the second terminal device by using the foregoing manner, because the second resource is part or all of the first resource, so the first terminal device itself can know The control message is a pre-scheduling for the second resource. At this time, for the second resource, the first terminal device further needs to detect the first indication to confirm whether uplink transmission is performed on the second resource.

The first terminal device further needs to detect the first indication on the second resource by using at least one of the second scheduling time units (ie, the first period), where the first indication is used to indicate Whether uplink transmission can be performed on the fourth resource corresponding thereto. The fourth resource is part or all of the resources on the second resource that are not used by the second terminal device. That is, the first terminal device needs to know, on the second resource, whether the second terminal device completes uplink transmission on the second resource, and the access network device that can pass the The first indication sent by the first terminal device is completed. When the first terminal device detects the first indication, the second resource may perform uplink transmission on at least part of the resource starting from the time point when the first indication is received in the time domain, so that There is no case of a collision with the second terminal device transmission.

When the second terminal device performs the uplink transmission on the second resource by using the method of the retransmission, the first indication is to indicate that the second terminal device is on the second resource. Acknowledgement (ACK) of the correct transmission is completed, which may in turn be referred to as early ACK. The ACK is actually sent by the access network device to the second terminal device, and is intended to indicate that the data transmitted by the second terminal device has been correctly received, and does not need to continue to perform repeated transmission. Continuing to repeat the transmission only wastes resources while increasing the energy consumption of the second terminal device, but has no advantage. In this embodiment, the first terminal device may learn, by using a protocol, or through a signaling sent by the access network device, a channel that sends the ACK, and listen to the channel, when detecting the After the ACK, the first terminal device may start uplink transmission on the remaining resources of the second resource that are not used by the second terminal device. As for the delay in the time domain, the first terminal device starts the uplink transmission immediately, or waits for a period of time to start the uplink transmission, which can be determined in a pre-agreed manner. That is, when the first indication is an ACK, in fact, the ACK is in addition to its original function, that is, the data that the second terminal device transmits has been correctly received, in this embodiment. There is also a new function of permitting the first terminal device to perform uplink transmission. It should be noted that, at this time, for the first terminal device, it may be configured to detect the ACK by using a channel that listens to the ACK in a first cycle, that is, the first indication, if the ACK, the first terminal device can stop listening. For the access network device, there is no periodic transmission, and the access network device only needs to correctly receive the uplink transmission data of the second terminal device on the second resource. Send the ACK.

In this case, the ACK may correspond to a group of terminal devices, and the service type of the group terminal device data transmission may be a URLLC service, and the second terminal device is a terminal device in the group, and the ACK is the group of the terminal device. Group ACK, the ACK may be scrambled using the group identity (group identity) or the group mask group mask, or the ACK may be a sequence, and the sequence is Corresponding to the group, that is to say, different groups can be distinguished by different sequences. In doing so, it is advantageous to increase the probability of correctly receiving the ACK. The access network device may notify the second terminal device by using the group ID or the group mask in advance by signaling or the like. The ACK may also be transmitted by using a code sequence corresponding to the resource number of the second resource, thereby further saving the signaling overhead, because the access network device and the second terminal are all pre- Knowing the correspondence between the number of the resource and the code sequence, the first resource may have multiple unscheduled resources, and the first terminal needs to detect multiple different ACK sequences, and the code sequence or time adopted by the ACK sequence The frequency resource location to obtain which unscheduled resource is available.

Of course, in this embodiment, the first indication may still be a first indication similar to that described in the second embodiment, that is, the access network device confirms that the second terminal device is in the second When the uplink transmission data is correctly received, the first indication of permitting the first terminal device to perform uplink transmission is sent to the first terminal device through a specific channel or a power control command. For example, in the second embodiment, the first terminal device detects the expression of the first indication that the first terminal device is permitted to perform uplink transmission, and how the first terminal device learns the related content, such as the specific channel. The related expressions are not described in this embodiment.

For the second resource, when the first terminal device has not received the first indication that the first terminal device is permitted to perform uplink transmission, the first terminal device may transmit power to the second resource. Adjustments are made, such as power zeroing, that is, no uplink transmissions are made on the second resource.

The difference between this embodiment and the second embodiment is that, in this embodiment, after the first terminal device detects the first indication that the first terminal device is permitted to perform uplink transmission, the first terminal device does not need to target the The second resource is then monitored again, that is, once the transmission on the second resource is started, the first terminal device can continue to transmit to the end in the time domain. For the second embodiment, the first indication only corresponds to a part of resources on the second resource that is equal to the first period, that is, the third resource. Therefore, after detecting the first indication that the first terminal device is permitted to perform uplink transmission, the first terminal device further needs to continue to detect the first indication in a first period to determine other on the second resource. Whether a portion (for example, a resource located after the third resource in the time domain) can perform uplink transmission.

As shown in FIG. 6 , as an example, the first period is one of the second scheduling time units, the second resource is part of the first resource, and the second resource includes eight first time groups in the time domain. cycle.

The access network device configures the second resource to perform uplink transmission to the second terminal device in advance, that is, the second terminal device performs uplink transmission on the second resource in a scheduling-free manner. The access network device also notifies the first terminal device of the configuration information.

The access network device sends a control message to the first terminal device, where the control message includes a UL grant, and is used to schedule the first terminal device to perform uplink transmission on the first resource. The first terminal device may identify that some resources in the first resource overlap with the second resource.

In the non-coincident part, that is, the hatched portion in FIG. 6, the first terminal device performs uplink transmission normally. And in the overlapping part, the second terminal device uses 8 as the repetition number, and the second scheduling unit, that is, the scheduling time unit of the second terminal device, performs uplink transmission for the repeated granularity, and the transmission mode is exempted. Scheduled. The first terminal device does not temporarily transmit data on the second resource, but further detects whether there is an ACK sent by the access network device to the second terminal device. The period of the detection may be the first period. Because the minimum time granularity of the ACK of the access network device is the second scheduling time unit, that is, the first period, this can avoid the always listening to reduce the energy consumption of the first terminal device. Nor will the ACK be missed.

It is assumed that when the second terminal device performs the uplink transmission to the 4th repetition, the access network device correctly receives the uplink transmission data of the second terminal device, then the access network device sends an ACK. Instructing the second terminal device to stop repeating transmission. If the second terminal device stops the subsequent repeated transmission, and the first terminal device detects the ACK, the remaining resources in the second resource may be used by the first terminal device to perform uplink Transfer without causing a transmission conflict. Considering the delay obtained by the ACK transmission, reception, and detection, the first terminal device performs uplink transmission on a part of resources on the second resource, and does not use the second terminal device in the time domain. The fourth part of the resource corresponding to the resource. After detecting the ACK, the first terminal device may perform uplink transmission on the seventh and eighth second scheduling time units, that is, the fourth resource is the second resource at this time. The partial resources that are not used by the second terminal device, that is, the seventh and eighth second scheduling time units.

In the technical solution provided by the embodiment of the present application, the access network device pre-schedules the first resource to the first terminal device, and periodically performs the first indication on the second resource that is coexisting with the second terminal device on the first resource of the first terminal device. The detecting, when detecting the first indication that the first terminal device is allowed to perform uplink transmission, performing uplink data transmission on at least part of the remaining resources of the second resource, thereby effectively avoiding the problem of transmission conflict during coexistence, At the same time, the system resources are fully utilized to improve the efficiency of communication.

Embodiment 4

The present embodiment provides a structural diagram of a communication device 700. As shown in FIG. 7, the communication device 700 includes a transceiver 701, a processor 702, a memory 703, and a bus system 704;

The memory 703 is used to store a program. In particular, the program can include program code, the program code including computer operating instructions. The memory 703 may be a random access memory (RAM) or a non-volatile memory such as at least one disk storage. Only one memory is shown in the figure, of course, the memory can also be set to a plurality as needed. Memory 703 can also be a memory in processor 702.

The memory 703 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof:

Operation instructions: include various operation instructions for implementing various operations.

Operating system: Includes a variety of system programs for implementing various basic services and handling hardware-based tasks.

The processor 702 controls the operation of the communication device 700, which may also be referred to as a central processing unit (CPU). In a specific application, the various components of the communication device 700 are coupled together by a bus system 704, which may include, in addition to the data bus, a power bus, a control bus, a status signal bus, and the like. However, for clarity of description, various buses are labeled as bus system 704 in the figure. For ease of representation, only the schematic drawing is shown in FIG.

The method of any of the first terminal devices disclosed in the foregoing first to third embodiments; or the method of any of the foregoing access network devices disclosed in the foregoing first to third embodiments may be applied to the processor 702 or implemented by the processor 702. Processor 702 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 702 or an instruction in a form of software. The processor 702 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware. Component. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 703, the processor 702 reads the information in the memory 703, and performs the method steps of the first terminal device according to any one of the foregoing embodiments 1 to 3 in combination with the hardware thereof; or executes the above embodiment in combination with the hardware thereof. Method steps of any one of the access network devices described in any one of three to three.

Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the various illustrative components and steps described above have generally described their functionality. Whether such functionality is implemented by hardware or software depends on the design requirements of the particular application and the overall system. A person skilled in the art can implement the described functions using various methods for each specific application, but such implementation should not be construed as being beyond the scope of the embodiments of the present invention.

The various illustrative logic blocks, modules and circuits described in the embodiments of the present application may be implemented by a general purpose processing unit, a digital signal processing unit, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic. Devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the functions described. The general purpose processing unit may be a micro processing unit. Alternatively, the general purpose processing unit may be any conventional processing unit, controller, microcontroller or state machine. The processing unit may also be implemented by a combination of computing devices, such as a digital signal processing unit and a microprocessing unit, a plurality of microprocessing units, one or more microprocessing units in conjunction with a digital signal processing unit core, or any other similar configuration. achieve.

The steps of the method or algorithm described in the embodiments of the present application may be directly embedded in hardware, a software module executed by a processing unit, or a combination of the two. The software modules can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium in the art. Illustratively, the storage medium can be coupled to the processing unit such that the processing unit can read information from the storage medium and can write information to the storage medium. Alternatively, the storage medium can also be integrated into the processing unit. The processing unit and the storage medium may be configured in an ASIC, and the ASIC may be configured in the user terminal. Alternatively, the processing unit and the storage medium may also be configured in different components in the user terminal.

In one or more exemplary designs, the above-described functions described in the embodiments of the present invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions may be stored on a computer readable medium or transmitted as one or more instructions or code to a computer readable medium. Computer readable media includes computer storage media and communication media that facilitates the transfer of computer programs from one place to another. The storage medium can be any available media that any general purpose or special computer can access. For example, such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other device or data structure that can be used for carrying or storing Other media that can be read by a general purpose or special computer, or a general or special processing unit. In addition, any connection can be appropriately defined as a computer readable medium, for example, if the software is from a website site, server or other remote source through a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) Or wirelessly transmitted in, for example, infrared, wireless, and microwave, is also included in the defined computer readable medium. The disks and discs include compact disks, laser disks, optical disks, DVDs, floppy disks, and Blu-ray disks. Disks typically replicate data magnetically, while disks typically optically replicate data with a laser. Combinations of the above may also be included in a computer readable medium.

The above description of the specification of the present invention may enable any of the art to utilize or implement the present invention. Any modifications based on the disclosure should be considered as obvious in the art. The basic principles described herein can be applied to other variants. Without departing from the spirit and scope of the invention. Therefore, the present disclosure is not limited to the described embodiments and designs, but may be extended to the maximum extent consistent with the principles of the invention and the novel features disclosed.

Claims

A data transmission method, characterized in that the method comprises:

Receiving, by the first terminal device, a control message sent by the access network device, where the control message is used to indicate that the first terminal device performs uplink transmission on the first resource;

The first terminal device detects a first indication in a first period, where the first period is smaller than a first scheduling time unit, and the first scheduling time unit is a scheduling time unit of the first terminal device. The second resource is part or all of the first resource;

When detecting the first indication that the first terminal device is permitted to perform uplink transmission, the first terminal device starts uplink transmission on the second resource.
The method according to claim 1, wherein the second resource is located in a transmission coexistence area of the first terminal device and the second terminal device, and the first period is at least one second scheduling time unit. The second scheduling time unit is a scheduling time unit of the second terminal device, where the first indication corresponds to a third resource, the third resource is part of the second resource, and the third resource is in a time domain. The length is the first period;

The first terminal starts uplink transmission on the second resource, including:

The first terminal starts uplink transmission on the third resource.
The method according to claim 1, wherein the second resource is located in a transmission coexistence area of the first terminal device and the second terminal device, and the second resource is allocated to the second terminal device. The first period is the at least one second scheduling time unit, and the second scheduling time unit is the scheduling time unit of the second terminal device;

The first terminal starts uplink transmission on the second resource, including:

The first terminal starts uplink transmission on a fourth resource, and the fourth resource is part or all of resources in the second resource that are not used by the second terminal device.
The method of claim 3, wherein the first indication is an acknowledgment response indicating that the second terminal device completes a correct transmission on the second resource.
The method according to claim 2 or 3, wherein the first indication is dedicated to the first terminal device or shared by a terminal device group in which the first terminal device is located.
The method according to claim 4, wherein the first indication corresponds to a terminal device group in which the second terminal device is located, or corresponds to the second resource.
The method of any of claims 1-6, wherein the control message includes information indicating a size of the first period.
The method according to any one of claims 2-7, wherein the first terminal is an enhanced mobile broadband eMBB terminal device, and the second terminal device is a highly reliable low latency communication URL LC terminal device.
A data transmission method, characterized in that the method comprises:

The access network device sends a control message to the first terminal device, where the control message is used to indicate that the first terminal device performs uplink transmission on the first resource;

When the access network device confirms that the second resource is available in the first period, the access network device sends, to the second terminal device, permission for the first terminal device to perform uplink transmission on the second resource. The first indication, where the first period is smaller than a first scheduling time unit, the first scheduling time unit is a scheduling time unit of the first terminal device, and the second resource is part or all of the First resource;

The access network device receives an uplink transmission of the first terminal device on the second resource.
The method according to claim 9, wherein the second resource is located in a transmission coexistence area of the first terminal device and the second terminal device, and the first period is at least one second scheduling time unit. The second scheduling time unit is a scheduling time unit of the second terminal device, where the first indication corresponds to a third resource, the third resource is a part of the second resource, and the third resource is in a time domain. The length is the first period;

Receiving, by the access network device, the uplink transmission of the first terminal device on the second resource, including:

The access network device receives an uplink transmission of the first terminal device on the third resource.
The method according to claim 9 or 10, wherein the first indication that the first terminal device is permitted to perform uplink transmission is that the first indicated transmission power is greater than zero.
The method according to claim 9 or 10, wherein the first indication that the first terminal device is permitted to perform uplink transmission is that the first indication includes a first bit, the first The value of the bit is a predetermined value.
A data transmission method, characterized in that the method comprises:

The access network device sends a control message to the first terminal device, where the control message is used to indicate that the first terminal device performs uplink transmission on the first resource;

When the access network device correctly receives the uplink transmission data of the second terminal device on the second resource, the access network device sends the permission to the first terminal device, where the first terminal device is in the The first indication of performing uplink transmission on the second resource, where the second resource is part or all of the first resource, and the second resource is an unscheduled resource allocated to the second terminal device;

The access network device receives an uplink transmission of the first terminal device on the second resource.
The method of claim 13 wherein:

Receiving, by the access network device, the uplink transmission of the first terminal device on the second resource, including:

The access network device receives an uplink transmission of the first terminal device on a fourth resource, where the fourth resource is part or all of resources on the second resource that are not used by the second terminal device Resources.
The method according to claim 13 or 14, wherein the first indication is an acknowledgment response indicating that the second terminal device completes the correct transmission on the second resource.
A first terminal device, comprising:

a transceiver, configured to receive a control message sent by the access network device, where the control message is used to indicate that the first terminal device performs uplink transmission on the first resource;

a processor, configured to detect, by using a first period, a first indication, where the first period is smaller than a first scheduling time unit, where the first scheduling time unit is a scheduling time unit of the first terminal device, where The second resource is part or all of the first resource;

The transceiver is further configured to start uplink transmission on the second resource when the processor detects the first indication that the first terminal device is permitted to perform uplink transmission.
The first terminal device according to claim 16, wherein the second resource is located in a transmission coexistence area of the first terminal device and the second terminal device, and the first period is at least one second scheduling time. a unit, the second scheduling time unit is a scheduling time unit of the second terminal device, where the first indication corresponds to a third resource, the third resource is a part of the second resource, and the third resource is The domain length is the first period;

The transceiver is configured to start uplink transmission on the second resource, including:

The transceiver is configured to initiate an uplink transmission on the third resource.
The first terminal device according to claim 16, wherein the second resource is located in a transmission coexistence area of the first terminal device and the second terminal device, and the second resource is allocated to the second terminal a scheduling-free resource of the terminal device, where the first period is at least one second scheduling time unit, and the second scheduling time unit is a scheduling time unit of the second terminal device;

The transceiver is configured to start uplink transmission on the second resource, including:

The transceiver is configured to start uplink transmission on the fourth resource, where the fourth resource is part or all of resources on the second resource that are not used by the second terminal device.
The first terminal device according to claim 18, wherein the first indication is an acknowledgment response indicating that the second terminal device completes the correct transmission on the second resource.
The first terminal device according to claim 17 or 18, wherein the first indication is dedicated to the first terminal device or shared by a terminal device group in which the first terminal device is located.
The first terminal device according to claim 19, wherein the first indication corresponds to a terminal device group in which the second terminal device is located, or corresponds to the second resource.
The first terminal device according to any one of claims 16-21, wherein the control message includes information indicating a size of the first period.
The first terminal device according to any one of claims 17 to 22, wherein the first terminal is an enhanced mobile broadband eMBB terminal device, and the second terminal device is a high reliability low latency communication URL LC terminal device. .
An access network device, comprising:

a transceiver, configured to send a control message to the first terminal device, where the control message is used to indicate that the first terminal device performs uplink transmission on the first resource;

a processor, configured to confirm, in a first period, whether the second resource is available, where the second resource is part or all of the first resource;

When the processor confirms that the second resource is available, the transceiver is further configured to send, to the second terminal device, the first that allows the first terminal device to perform uplink transmission on the second resource. An indication, and receiving an uplink transmission of the first terminal device on the second resource;

The first period is smaller than the first scheduling time unit, and the first scheduling time unit is a scheduling time unit of the first terminal device.
The access network device according to claim 24, wherein the second resource is located in a transmission coexistence area of the first terminal device and the second terminal device, and the first period is at least one second scheduling time. a unit, the second scheduling time unit is a scheduling time unit of the second terminal device, the first indication corresponds to a third resource, the third resource is a part of the first resource, and the third resource is in time The length on the domain is the first period;

The receiving, by the transceiver, the uplink transmission data of the first terminal device on the second resource, including:

The transceiver receives an uplink transmission of the first terminal device on the third resource.
The access network device according to claim 24 or 25, wherein the first indication that the first terminal device is permitted to perform uplink transmission is that the first indicated transmission power is greater than zero.
The access network device according to claim 24 or 25, wherein the first indication that the first terminal device is permitted to perform uplink transmission is that the first indication includes a first bit, The value of the first bit is a predetermined value.
An access network device, comprising:

a transceiver, configured to send a control message to the first terminal device, where the control message is used to indicate that the first terminal device performs uplink transmission on the first resource;

a processor, configured to confirm whether the uplink transmission data of the second terminal device on the second resource is correctly received, where the second resource is part or all of the first resource, and the second resource is allocated to the a scheduling-free resource of the second terminal device;

When the processor confirms that the uplink transmission data of the second terminal device on the second resource is correctly received, the transceiver is further configured to send permission to the first terminal device that the first terminal device is And performing, by the second resource, the first indication of uplink transmission, and receiving, by the second resource, an uplink transmission of the first terminal device.
The access network device of claim 28, wherein

The transceiver is configured to receive the uplink transmission data of the first terminal device on the second resource, including:

The transceiver is configured to receive an uplink transmission of the first terminal device on a fourth resource, where the fourth resource is part or all resources of resources on the second resource that are not used by the second terminal device .
The access network device of claim 28, wherein the first indication is an acknowledgment response indicating that the second terminal device completes the correct transmission on the second resource.