WO2021056583A1

WO2021056583A1 - Uplink transmission method and apparatus

Info

Publication number: WO2021056583A1
Application number: PCT/CN2019/109232
Authority: WO
Inventors: 贾琼; 张佳胤; 范巍巍
Original assignee: 华为技术有限公司
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2021-04-01
Also published as: WO2021056583A9; CN114424643A

Abstract

The embodiments of the present application provide an uplink transmission method, being applicable to a communication system, such as V2X, LTE-V, MTC, IoT, LTE-M and M2M, and being able to improve the uplink capacity. Said method comprises: a terminal device receiving first scheduling information sent by a network device on a first carrier, and second scheduling information sent on a second carrier, the first scheduling information and the second scheduling information being a subset of scheduling instruction information, the scheduling instruction information being used to instruct the terminal device to send information required by uplink data; and according to the first scheduling information and the second scheduling information, sending, on the second carrier, the uplink data to the network device.

Description

Uplink transmission method and device

Technical field

This application relates to the field of wireless network technology, and in particular to an uplink transmission method and device.

Background technique

The rapid development of wireless communication technology has led to an increasing shortage of spectrum resources, which has promoted the exploration of unlicensed frequency bands. The 3rd generation partnership project (3GPP) introduced licensed spectrum assisted access (license assisted access, LAA) and enhanced licensed spectrum assisted access in release 13 (release 13, R13) and release R14, respectively (enhanced LAA, eLAA) technology, that is, non-standalone deployment of Long Term Evolution (LTE)/Long Term Evolution (LTE-Advanced, LTE-A) LTE systems on unlicensed spectrum, Maximize the use of unlicensed spectrum resources with the assistance of licensed spectrum. In the existing technical solution, the uplink capacity can be improved by the auxiliary uplink carrier of the low frequency band. However, due to the limited bandwidth resources of the frequency band available, the problem of insufficient uplink capacity still exists.

Summary of the invention

The embodiments of the application provide an uplink transmission method and device, which can be applied to communication systems, such as vehicle-to-everything (V2X), LTE vehicle-to-vehicle communication (LTE-Vehicle, LTE-V), and machine type Communication (machine type communication, MTC), machine to machine network (machine to machine, M2M), Internet of things (IoT), LTE machine to machine network (LTE-machine to machine, LTE-M) can improve Uplink communication capacity.

In the first aspect, an embodiment of the present application provides an uplink transmission method, including: a terminal device receives first scheduling information sent by a network device on a first carrier; receiving second scheduling information sent by a network device on a second carrier; Among them, the first scheduling information and the second scheduling information are a subset of the scheduling indication information, and the scheduling indication information is used to indicate the information required by the terminal equipment to send uplink data; according to the first scheduling information and the second scheduling information, the second carrier The uplink sends uplink data to the network device. The two-step cross-carrier scheduling is used to instruct the uplink transmission on the second carrier, which effectively improves the uplink communication capacity.

In a possible design, the first scheduling information and the second scheduling information include time indication information of the scheduling indication information. Two scheduling messages are used to coordinately indicate the uplink transmission time, thereby reducing data transmission delay.

In another possible design, at least one of the first carrier and the second carrier is on an unlicensed spectrum. Since the unlicensed spectrum can be configured with a larger bandwidth, the uplink communication capacity can be further improved by sending uplink data on the unlicensed spectrum.

In another possible design, when the second carrier is on the unlicensed spectrum, the transmission time of the uplink data is within the channel occupation time COT obtained by the network device by listening first and then sending the LBT, so as to ensure that the uplink data can be sent in time.

In another possible design, when the second carrier is on the unlicensed spectrum, the terminal device sends uplink data to the network device after performing LBT. LBT is performed to ensure that the channel of the second carrier is in an idle state, thereby improving the success rate of data transmission.

In another possible design, when the second carrier is on the unlicensed spectrum, the terminal device determines the transmission time of the uplink data according to at least one of the first scheduling information and the second scheduling information; determines the transmission of the uplink data The time interval between the time and the receiving time of the second scheduling information; when the time interval is less than or equal to the preset threshold, the terminal device sends uplink data; when the time interval is greater than the preset threshold, the terminal device sends uplink data after performing LBT. So as to ensure the success rate of data transmission.

In another possible design, when the time division duplex TDD mode is adopted and the first carrier is in the licensed spectrum, the uplink data of the first uplink time unit on the second carrier is adjusted to the second uplink time unit on the first carrier , Where the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit. Avoid interference of data transmission on the second carrier, and improve the success rate of data transmission.

In another possible design, the network device first sends the first scheduling information on the first carrier, and then sends the second scheduling information to the terminal device on the second carrier. After the terminal device receives the second scheduling information, it can determine Data transmission time, and then send uplink data according to the determined transmission time. By first sending the first scheduling information, the terminal device can accurately data in advance, and then sending the second scheduling information to trigger the terminal device to send uplink data, which can effectively reduce the data transmission delay.

In a second aspect, an embodiment of the present application provides an uplink transmission method, including: a network device sends first scheduling information to a terminal device on a first carrier, and the network device sends second scheduling information to a terminal device on a second carrier; Among them, the first scheduling information and the second scheduling information are a subset of the scheduling indication information, and the scheduling indication information is used to indicate information required by the terminal device to send uplink data; to receive the uplink data sent by the terminal device on the second carrier. The two-step cross-carrier scheduling is used to instruct the uplink transmission on the second carrier, which effectively improves the uplink communication capacity.

In another possible design, when the second carrier is on the unlicensed spectrum, the transmission time of the uplink data is within the channel occupation time COT obtained by the network device by listening first and then sending the LBT, so as to ensure that the uplink transmission can be sent in time.

In another possible design, when the first carrier is on the unlicensed spectrum, the network device sends the first scheduling information to the terminal device after performing LBT on the first carrier. LBT is performed to ensure that the channel of the first carrier is in an idle state, thereby improving the success rate of scheduling information transmission.

In another possible design, when the second carrier is on the unlicensed spectrum, the network device sends the second scheduling information to the terminal device after performing LBT on the second carrier. LBT is performed to ensure that the channel of the second carrier is in an idle state, thereby improving the success rate of scheduling information transmission.

In a third aspect, an embodiment of the present application provides an uplink transmission method, including: a terminal device receives data sent by a network device on a first carrier; selecting at least one carrier from the first carrier and the second carrier; Send feedback information to the network device on one carrier, and the feedback information is used to indicate data reception; wherein, at least one of the first carrier and the second carrier is on the licensed spectrum. By sending feedback information across carriers and using the auxiliary feedback channel to provide additional feedback resources, the uplink communication capacity is effectively improved.

In a possible design, the terminal device sends feedback information to the network device on the first carrier and the second carrier. The feedback information is transmitted together through the first carrier and the second carrier to improve the capacity of uplink communication.

In another possible design, the terminal device performs monitoring on at least one carrier before sending the LBT and then sending feedback information to the network device. The implementation of LBT ensures that the unlicensed spectrum is in an idle state, thereby improving the success rate of feedback information transmission.

In another possible design, the terminal device receives the scheduling information sent by the network device. The scheduling information includes first indication information and second indication information. The first indication information is used to indicate the feedback resource on the first carrier, and the second indication is The information is used to indicate the feedback resources on the second carrier. The feedback resource is indicated by the scheduling information to avoid the collision of the feedback resource and improve the success rate of the feedback information transmission.

In another possible design, at least one carrier includes at least one feedback resource; the terminal device selects the feedback resource closest to the data receiving time from the at least one feedback resource to send feedback information to the network device. Can effectively reduce the data transmission delay.

In another possible design, at least one carrier includes the feedback resource on the first carrier and the feedback resource on the second carrier; when the feedback resource on the first carrier and the feedback resource on the second carrier are in the time domain When overlapped, the terminal device selects at least one feedback resource from the overlapped feedback resources to send feedback information to the network device.

In another possible design, the first indication information adopts a display indication mode or an implicit indication mode, or the second indication information adopts a display indication mode or an implicit indication mode.

In another possible design, the first indication information and the second indication information are the same indication information. By indicating the feedback resource on the first carrier and the feedback resource on the second carrier through one indication information, the signaling overhead can be reduced.

In another possible design, the first indication information and the second indication information are indicated by at least one of radio resource control RRC and downlink control information DCI.

In a fourth aspect, an embodiment of the present application provides an uplink transmission method, including: a network device sends data to a terminal device on a first carrier; and receiving feedback information sent by the terminal device on at least one carrier, at least one carrier is the terminal device Selected from the first carrier and the second carrier; wherein at least one of the first carrier and the second carrier is on the licensed spectrum. By sending feedback information across carriers and using the auxiliary feedback channel to provide additional feedback resources, the uplink communication capacity is effectively improved.

In a possible design, the network device receives the feedback information sent by the terminal device on the first carrier and the second carrier. The feedback information is transmitted together through the first carrier and the second carrier to improve the uplink capacity.

In another possible design, the network device receives the feedback information sent after the terminal device performs monitoring on at least one carrier and then sends the LBT. The implementation of LBT ensures that the unlicensed spectrum is in an idle state and improves the success rate of feedback information transmission.

In another possible design, the terminal device sends scheduling information to the network device. The scheduling information includes first indication information and second indication information. The first indication information is used to indicate the feedback resource on the first carrier, and the second indication information is Used to indicate the feedback resources on the second carrier. The feedback resources are indicated by scheduling information to avoid collisions of feedback resources and improve the success rate of feedback information transmission.

In another possible design, at least one carrier includes at least one feedback resource; the network device receives the feedback information sent by the feedback resource selected by the terminal device from the at least one feedback resource, which is the closest to the data receiving time. Can effectively reduce the data transmission delay.

In the fifth aspect, the embodiments of the present application provide an uplink transmission device, which is configured to implement the methods and functions performed by the terminal equipment in the first aspect and the third aspect, and is implemented by hardware/software, and its hardware/software Including modules corresponding to the above-mentioned functions.

In the sixth aspect, the embodiments of the present application provide another uplink transmission device, which is configured to implement the methods and functions performed by the network equipment in the second and fourth aspects described above, and is implemented by hardware/software. The software includes modules corresponding to the above-mentioned functions.

In a seventh aspect, an embodiment of the present application provides a communication device including a processor and a memory; the memory is used to store computer-executable instructions; the processor is used to execute the computer-executable instructions stored in the memory, so that all The communication device executes the methods and functions executed by the terminal equipment in the first aspect and the third aspect described above.

In an eighth aspect, an embodiment of the present application provides a communication device, including a processor and an interface circuit; the interface circuit is configured to receive code instructions and transmit them to the processor; the processor runs the code instructions to Perform the methods and functions performed by the terminal device in the first aspect and the third aspect described above.

In a ninth aspect, an embodiment of the present application provides a communication device including a processor and a memory; the memory is used to store computer-executable instructions; the processor is used to execute the computer-executable instructions stored in the memory, so that all The communication device executes the methods and functions executed by the network equipment in the second aspect and the fourth aspect.

In a tenth aspect, an embodiment of the present application provides a communication device, including a processor and an interface circuit; the interface circuit is configured to receive code instructions and transmit them to the processor; the processor runs the code instructions to Perform the methods and functions performed by the network device in the second aspect and the fourth aspect described above.

In an eleventh aspect, an embodiment of the present application provides a readable storage medium for storing instructions. When the instructions are executed, the method described in any one of the first aspect and the third aspect is implemented.

In the twelfth aspect, the embodiments of the present application provide a readable storage medium for storing instructions, and when the instructions are executed, the method described in any one of the second aspect and the fourth aspect is implemented.

In a thirteenth aspect, an embodiment of the present application provides a communication system, including the terminal device in any of the foregoing aspects and the network device in any aspect.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the following will describe the drawings that need to be used in the embodiments of the present application or the background art.

FIG. 1 is a schematic diagram of the architecture of a communication system 100 provided by an embodiment of the present application;

Figure 2 is a schematic diagram of a carrier operating mode provided by an embodiment of the present application;

FIG. 3 is a schematic flowchart of an uplink transmission method provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of sending uplink data according to an embodiment of an embodiment of the present application;

FIG. 5 is a schematic flowchart of an uplink transmission method provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of a feedback resource provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of an uplink transmission apparatus according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of another uplink transmission apparatus according to an embodiment of an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a terminal device proposed in an embodiment of the present application;

Fig. 10 is a schematic structural diagram of a network device proposed in an embodiment of the present application.

detailed description

The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

As shown in FIG. 1, FIG. 1 is a schematic structural diagram of a communication system 100 provided by an embodiment of the present application. The communication system 100 may be a fifth-generation mobile communication technology (5-Generation, 5G) new radio access technology (NR) system, or other communication systems. The communication system 100 may include a network device 110 and a terminal device 101 to a terminal device 106. It should be understood that the communication system 100 to which the method in the embodiments of the present application can be applied may include more or fewer network devices or terminal devices. The network device or terminal device can be hardware, software that is functionally divided, or a combination of the two. The network device and the terminal device can communicate with other devices or network elements. In the communication system 100, the network device 110 can send downlink data to the terminal device 101 to the terminal device 106. Of course, the terminal device 101 to the terminal device 106 may also send uplink data to the network device 110. The terminal equipment 101 to the terminal equipment 106 may be user equipment (UE), cell phones, smart phones, portable computers, handheld communication equipment, handheld computing equipment, satellite radio devices, global positioning systems, and personal computers (personal computers). digital assistant (PDA) and/or any other suitable devices for communicating on the wireless communication system 100, etc. The network device 110 may be a base station, an access point, a Node B, an environment bureau (eNB), or a 5G base station (next generation base station, gNB), which refers to a wireless terminal through one or more sectors on the air interface Devices in the access network that communicate. By converting the received air interface frames into IP packets, the network device 110 can act as a router between the wireless terminal and the rest of the access network, and the access network can include an Internet Protocol network. The network device 110 may also coordinate the management of the attributes of the air interface. The communication system 100 may adopt a public land mobile network (PLMN), a device-to-device (D2D) network, a machine-to-machine (M2M) network, and the Internet of things (Internet of things). , IoT) or other networks. In addition, the terminal device 104 to the terminal device 106 may also form a communication system.

Communication systems deployed on unlicensed spectrum usually use or share wireless resources in a competitive manner. Stations such as the Institute of Electrical and Electronics Engineers (IEEE) stations (STA) under the 802.11 protocol framework, including access points (AP) and non-AP stations (STA), between them The same or similar principles to fair competition and use of unlicensed spectrum resources. Generally, the station first monitors whether the unlicensed spectrum is free before sending a signal. For example, the received power on the unlicensed spectrum is used to determine its busy or idle state. If the received power is less than a certain threshold, the unlicensed spectrum is considered to be in an idle state , The signal can be sent on the unlicensed spectrum, otherwise no signal is sent. This mechanism of listening before sending is called listening before sending or listening before talk (LBT). Common LBTs are as follows: (1) Cat 1 LBT: LBT is not executed; (2) Cat 2 LBT: Non-random back-off LBT method; (3) Cat 4 LBT: Random back-off LBT method.

As shown in FIG. 2, FIG. 2 is a schematic diagram of a carrier operating mode provided by an embodiment of the present application. (a): The NR system can work in unpaired spectrum, corresponding to time division duplex (TDD), that is, by performing downlink (DL) and uplink (UL) transmissions at different times , A duplex mode that realizes the interaction between network equipment and terminal equipment. (b): NR system can also work in paired spectrum, corresponding to frequency division duplex (FDD), that is, through DL and UL transmission on different carriers (frequency bands), network equipment and terminals are realized The duplex mode of interaction between devices. (c): The TDD NR system can also be configured with a supplementary uplink (SUL) carrier. In this case, one NR cell includes one TDD carrier and one SUL carrier. Among them, the transmission direction in the TDD carrier It can be uplink, downlink, or reserved, but the transmission direction of the SUL carrier cannot be downlink, and may be uplink or reserved.

In the prior art, an auxiliary uplink carrier in a low frequency band is used to increase the uplink capacity, but the available frequency band bandwidth (such as the 2.1 GHz frequency band) resources are limited, with only 20 MHz or 40 MHz available bandwidth, and the uplink capacity that can be improved is limited. Especially in the TDD system, due to the uplink and downlink ratio, there are problems with insufficient uplink capacity and large processing delay. In order to solve the above technical problems, the embodiments of the present application provide the following solutions.

As shown in FIG. 3, FIG. 3 is a schematic flowchart of an uplink transmission method provided by an embodiment of the present application. The steps in the embodiment of this application at least include:

S301: The network device sends first scheduling information to the terminal device on the first carrier, and sends second scheduling information to the terminal device on the second carrier. The first scheduling information and the second scheduling information are a subset of scheduling indication information, and the scheduling indication information is used to indicate information required by the terminal device to send uplink data.

It should be noted that the order in which the network device sends the first scheduling information and the second scheduling information is not limited to the order described in step 301. That is, the network device can send the first scheduling information on the first carrier, and the terminal device performs data preparation after receiving the first scheduling information, and then the network device can send the second scheduling information to the terminal device on the second carrier, and the terminal device receives After the second scheduling information, the data transmission time can be determined, and then the uplink data is transmitted according to the determined transmission time. Alternatively, the network device may also send the first scheduling information to the terminal device on the first carrier and the second scheduling information to the terminal device on the second carrier at the same time. Alternatively, the network device may first send the second scheduling information, and the terminal device may prepare data after receiving the second scheduling information. The network device may then send the first scheduling information to the terminal device. After the terminal device receives the first scheduling information, it may Determine the data transmission time, and then send the uplink data according to the determined transmission time.

In a possible implementation manner, the first scheduling information may be part of the above-mentioned scheduling indication information, and the second scheduling information may also be part of the above-mentioned scheduling indication information. The first scheduling information may be combined with the second scheduling information. The information is the same or different. Alternatively, the first scheduling information may be the indication information of the part of the above scheduling indication information, the second scheduling information may be the remaining indication information in the above scheduling indication information, and the first scheduling information and the second scheduling information can constitute complete scheduling indication information. . Alternatively, the first scheduling information and the second scheduling information include at least one indication information in the scheduling indication information at the same time, that is, the first scheduling information and the second scheduling information have an intersection of at least one indication information in the scheduling indication information.

S302: The terminal device sends the uplink data to the network device on the second carrier according to the first scheduling information and the second scheduling information. The uplink data may include physical uplink shared channel (PUSCH) data, physical uplink control channel (PUCCH) data, and so on.

Optionally, at least one of the first carrier and the second carrier is on an unlicensed spectrum, for example, the first carrier is on an unlicensed spectrum, or the second carrier is on an unlicensed spectrum, or the first carrier is Both the second carrier and the second carrier are on the unlicensed spectrum. The communication system of the embodiment of the present application may adopt the TDD working mode or the FDD working mode.

Optionally, when the first carrier is on the unlicensed spectrum, before the network device sends the first scheduling information on the first carrier, it needs to perform LBT or clear channel assessment (clear channel assessment, CCA) for channel sensing in order to obtain Channel occupancy time (COT), and then send the first scheduling information to the terminal device within the channel occupancy time.

Optionally, when the second carrier is on the unlicensed spectrum, the network device needs to perform LBT or CCA for channel sensing before sending the second scheduling information on the second carrier to obtain the channel occupancy time, and then check the channel occupancy time The second scheduling information is sent internally to the terminal device.

The scheduling indication information may include scheduling information format (identifier for DCI format) indication information, carrier (carrier indicator) indication information, partial bandwidth indication information (bandwidth part indicator), frequency domain resource indication information (frequency domain resource assignment), and time Domain resource indication information (time domain resource assignment), frequency hopping indication information (frequency hopping flag), modulation and coding scheme indication information (modulation and coding scheme), new data indication information (new data indicator), redundancy version indication information (redundancy) version), hybrid autorepeat request (HARQ) indication information, HARQ codebook indication information (such as 1st downlink assignment index and/or 2nd downlink assignment index), power control (transmit power control, TPC) indication information (E.g. TPC command for scheduled PUSCH), sounding reference signal indicator (sounding reference signal resource indicator, SRS resource indicator), precoding indicator information and layer indicator information (precoding information and number of layers), antenna port information (antenna ports) , Sounding reference signal transmission request indication information (SRS request), channel state information request indication information (channel state information request, CSI request), code block group transmission indication information (code block group transmission information, CBGTI), demodulation reference signal related Indication information (e.g. phase-tracking reference signals demodulation reference signal association, PTRS-DMRS association and/or DMRS sequence initialization), channel access mechanism indicator information (e.g. channelacce ss type or channel access priority), time indicator information (PDSCH-to-HARQ_feedback timing indicator) between data and HARQ feedback, PUCCH resource indicator information (PUCCH resource indicator), etc. Wherein, the scheduling instruction information includes one or a combination of the foregoing instruction information.

Wherein, the time domain resource indication information may include at least one of reference time information, absolute time information, time offset information, period information, and validity period; the frequency domain resource indication information may include a reference frequency domain position, an absolute frequency domain At least one of location, frequency domain offset information, and frequency domain range.

Optionally, the first scheduling information and the second scheduling information include time indication information of the scheduling indication information. The terminal device may confirm the specific uplink transmission time according to the time indication information in the first scheduling information and the time indication information in the second scheduling information. For example, if the terminal device receives the first scheduling information in the nth time slot, n is an integer greater than or equal to 0, and the first scheduling information indicates that the first time offset is offset1 time slot, and the second scheduling information indicates that The second time offset is offset2 time slots, where offset1 and offset2 are both integers greater than or equal to 0, and the time slot for the terminal device to send uplink data is the (n+offset1+offset2)th time slot. Or, if the reference time point indicated by the first scheduling information is m and the time offset indicated by the second scheduling information is offset1, the time point at which the terminal device sends uplink data is m+offset1, where both m and offset1 are greater than A number equal to 0.

For example, the first scheduling information includes the first valid time and the first time offset offset1. The first scheduling information may indicate a time point or a time slot. The terminal device may determine the first valid time range [p, q] for sending the second scheduling information according to the first valid time in the first scheduling information, that is, the time point t for sending the second scheduling information should be located at the time point p and the time point between q. If the second scheduling information is received within the first valid time range, the time point at which the terminal device sends uplink data is t+offset1, where t, offset1, p, and q are all numbers greater than or equal to zero. Alternatively, the terminal device may determine the first valid time range [p, q] for sending the second scheduling information according to the first valid time in the first scheduling information, that is, the time slot t for sending the second scheduling information should be located at the pth time. From the slot to the qth time slot, if the second scheduling information is received within the first valid time range, the time slot for the terminal device to send uplink data is the (t+offset1)th time slot. Among them, t, offset1, p, and q are all integers greater than or equal to 0. It can be understood that the specific indication manner may also be other manners, which is not limited in this application.

Optionally, the first scheduling information may adopt a display instruction manner or an implicit instruction manner, and the second scheduling information may also adopt a display instruction manner or an implicit instruction manner.

For example, as shown in FIG. 4, FIG. 4 is a schematic diagram of sending uplink data according to an embodiment of the present application. Among them, trigger A represents the first scheduling information received at the first time, and trigger B represents the second scheduling information received at the second time. U represents an uplink time unit, D represents a downlink time unit, and S represents a special time unit, which can be used for uplink and downlink switching. The first scheduling information includes all indication information in the scheduling indication information except for the time domain indication information, and the time domain indication information is carried in the second scheduling information. The terminal device may determine the time to send the uplink data according to the trigger B received at the second moment. For example, the end time point of receiving the trigger B may be determined as the sending time point of the uplink data. It can be understood that, at this time, the time domain resource indication information is implicitly indicated through the second scheduling information.

Optionally, the instructions for the first scheduling information and the second scheduling information may include one or more of the following: downlink control information (DCI), uplink control information (UCI) for instructions, and side Line control information (sidelink control information, SCI) and radio resource control (radio resource control, RRC) signaling, etc.

Optionally, when the second carrier is on the unlicensed spectrum, the terminal device may determine to perform uplink transmission on the second carrier according to the first scheduling information and the second scheduling information. Before performing the uplink transmission, the terminal device needs to perform LBT . In the 3GPP research on LAA, there are four types of LBT operations:

Cat 1: CCA detection is not performed before data is sent;

Cat 2: LBT mechanism without random back-off;

Cat 3: Random back-off LBT mechanism with fixed competition window;

Cat 4: Random back-off LBT mechanism with variable contention window.

In the embodiment of the present application, the operation type for performing LBT may be Cat1 LBT, Cat2 LBT, or Cat4 LBT.

Optionally, when the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is within the channel occupation time COT obtained by the network device by listening first and then sending the LBT. As shown in Figure 4, the network equipment performs LBT in the third time unit and the fourth time unit, and the channel occupation time COT is the channel occupation time from the fifth time unit to the last time unit. The terminal device can perform LBT from the fifth time unit to the last time unit. A time unit sends uplink data to the network device.

Optionally, when the second carrier is on an unlicensed spectrum, the terminal device may determine the transmission time of the uplink data according to at least one of the first scheduling information and the second scheduling information; then Determine the time interval between the sending time of the uplink data and the receiving time of the second scheduling information, where the interval time may be 16us; when the time interval is less than or equal to the preset threshold, the terminal device may not need to perform LBT or perform Cat 1 LBT, directly sending the uplink data. When the time interval is greater than the preset threshold, the terminal device transmits the uplink data after performing LBT.

It should be noted that the transmission time of the uplink data can be a time period, a start time point or an end time point, or a certain time point within the time period. The receiving time of the second scheduling information may be a time period, a start time point or an end time point, or a certain time point within the time period. The time interval may be the difference between the start time point of sending uplink data and the end time point of receiving the second scheduling information, and the time interval may also be the start time point of sending uplink data and the time point of receiving the second scheduling information. The difference between the starting time points. The time interval can also be other values, which will not be repeated here.

Optionally, when the time division duplex TDD mode is adopted and the first carrier is in the licensed spectrum, the uplink data of the first uplink time unit on the second carrier is adjusted to the second The uplink time unit, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit. As shown in Figure 4, the terminal device sends uplink data from the fifth uplink time unit to the 14th uplink time unit on the second carrier, because the ninth time unit, the 13th time unit and the first carrier on the first carrier transmit uplink data. The 14 time units are uplink time units. The terminal device can adjust the data of the 9th time unit, the 13th time unit and the 14th time unit on the second carrier to the 9th time unit on the first carrier. The 13th time unit and the 14th time unit.

It should be noted that the time unit involved in this application can be a symbol, a slot, a mini-slot, a subframe, and a transmission time interval (TTI). It can also be seconds (s), milliseconds (ms), microseconds (us), and so on. The frequency domain units involved in this application may be subcarriers, resource elements (resource elements, RE), resource blocks (resource blocks, RB), etc., and may also be hertz (Hz).

It should be noted that the first carrier and the second carrier in the embodiment of the present application are used for logical distinction and do not constitute a quantitative limitation, and may include one or more first carriers, or may include one or more second carriers.

In the embodiment of this application, since the second carrier can be configured with a larger bandwidth (for example, not only the 2.1GHz band bandwidth can be configured, but also other unlicensed spectrum bandwidths), it is indicated in the second carrier by means of two-step scheduling across carriers. Uplink transmission on the carrier can effectively increase the uplink capacity. In addition, after receiving the first scheduling information, the terminal device can begin to prepare data, and then after receiving the second scheduling information, the uplink data transmission time can be determined, and then the uplink transmission can be performed according to the determined transmission time, which can reduce data Transmission delay.

As shown in FIG. 5, FIG. 5 is a schematic flowchart of an uplink transmission method provided by an embodiment of the present application. The steps in the embodiment of this application at least include:

S501: The network device sends data to the terminal device on the first carrier, and the terminal device receives the data sent by the network device on the first carrier.

S502: The terminal device selects at least one carrier from the first carrier and the second carrier.

S503: The terminal device sends feedback information to the network device on the at least one carrier, and the network device receives the feedback information sent by the terminal device on the at least one carrier. The feedback information is used to indicate the receiving status of the data; wherein at least one of the first carrier and the second carrier is on a licensed spectrum.

Specifically, after the terminal device receives the data, it determines the data reception situation, for example, when the data is received correctly, it feeds back A (ACK), otherwise it feeds back N (NACK), and then selects from the first carrier and the second carrier At least one carrier to send feedback information. The terminal device can select the first carrier and send feedback information to the network device on the first carrier. The terminal device may also select the second carrier and send feedback information to the network device on the second carrier. The terminal device may also select the first carrier and the second carrier, and send feedback information to the terminal device on the first carrier and the second carrier. Wherein, the feedback information on the first carrier may be exactly the same as the feedback information on the second carrier, or the feedback information on the first carrier is part of the feedback information that needs to be sent, and the feedback information on the second carrier The information is the remaining feedback information among all the feedback information that needs to be sent. Wherein, the feedback information may be HARQ information.

Wherein, the first carrier may be on the licensed spectrum, or the second carrier may be on the licensed spectrum, or both the first carrier and the second carrier are on the licensed spectrum. In the embodiment of this application, the terminal device can select a carrier on a licensed spectrum, or at least two carriers on a licensed spectrum, and can also choose a carrier on a licensed spectrum and a carrier on an unlicensed spectrum. The application is not limited to this.

Optionally, when the selected at least one carrier is on an unlicensed spectrum, the terminal device may send feedback information to the network device after performing LBT on the at least one carrier. For example, if the first carrier is on an unlicensed spectrum, the terminal device needs to perform LBT on the first carrier before sending feedback information to the network device on the first carrier, and send feedback information to the network device after performing LBT. If the second carrier is on the unlicensed spectrum, the terminal device needs to perform LBT on the second carrier before sending feedback information to the network device on the second carrier, and send feedback information to the network device after performing LBT.

Optionally, the network device may send scheduling information to the terminal device, and the terminal device may receive the scheduling information sent by the network device, where the scheduling information includes first indication information and second indication information, and the first indication information is used for Indicating the feedback resource on the first carrier, and the second indication information is used to indicate the feedback resource on the second carrier. Wherein, the scheduling information may include at least one of downlink control information DCI, side line control information SCI, or radio resource control RRC signaling. Wherein, the first indication information and the second indication information may be carried in the same scheduling information, for example, in the same DCI or the same SCI. The first indication information and the second indication information may also be carried in different scheduling information, for example, the first indication information is carried in the DCI, and the second indication information is carried in the SCI.

The first indication information and the second indication information may include one or more of the following indication information: indication information of the time between data and feedback, indication information of feedback resources, indication information for confirming the feedback codebook, and so on. Among them, the time indication information between data and feedback can be realized by indicating the time offset information between the sent data and the corresponding feedback information (HARQ information), for example, it can be done through PDSCH-to-HARQ_feedback timing indicator Instructions. The indication information of the feedback resource can be realized by indicating the resource (such as PUCCH) used to carry the feedback information, for example, by indicating the PUCCH resource indicator (PUCCH resource indicator). The indication information for confirming the feedback codebook can be realized by indicating the size of the HARQ codebook, for example, by indicating the downlink assignment index (DAI).

Optionally, the first indication information and the second indication information are the same indication information, or the first indication information and the second indication information are different indication information. For example, when the scheduling information contains the time indication information between two independent data and feedback, the first indication information is the time indication information between one piece of data in the scheduling information and the feedback, and the second indication information is the time indication information between one piece of data in the scheduling information and the feedback. The time between the other data and the feedback indicates the information. When the scheduling information includes a piece of time indication information between data and feedback, the first indication information and the second indication information may share one piece of time indication information between data and feedback.

Optionally, two domain values may be used to indicate the first indication information and the second indication information respectively. For example, two domain values can be used in DCI to indicate the PUCCH resource indicator (PUCCH resource indicator), where PUCCH resource indicator 1 represents the PUCCH resource location on the first carrier, and PUCCH resource indicator 2 represents the PUCCH resource on the second carrier. position.

Optionally, the first indication information and the second indication information may be indicated by at least one of radio resource control RRC and downlink control information DCI. For example, in RRC signaling, for each PUCCH resource in a PUCCH resource set (PUCCH resource set), the PUCCH resource location on the first carrier or the second carrier is defined respectively, that is, each PUCCH resource in the RRC signaling The PUCCH resource actually contains indication information of two PUCCH resources on the first carrier and the second carrier. The UE first determines the corresponding PUCCH resource set according to the HARQ information to be transmitted, then determines the corresponding PUCCH resource according to the PUCCH resource indicator contained in the DCI, and finally learns the first carrier and the second carrier according to the PUCCH resource contained in the RRC signaling PUCCH resource location on the

Optionally, the first instruction information adopts a display instruction manner or an implicit instruction manner, or the second instruction information adopts a display instruction manner or an implicit instruction manner. For example, the first indication information is the time indication information between the data contained in the scheduling indication and the feedback, which is used to indicate the feedback resource of the first carrier, while the second indication information adopts an implicit indication. Or the second indication information is the time indication information between the data contained in the scheduling indication and the feedback, which is used to indicate the feedback resource of the second carrier, and the first indication information adopts an implicit indication. Or both the first indication information and the second indication information adopt an implicit indication mode. The following is a detailed description through examples.

As shown in FIG. 6, FIG. 6 is a schematic diagram of a feedback resource provided by an embodiment of the present application. Three first carriers are on licensed spectrum, and one second carrier is on unlicensed spectrum. Each carrier includes multiple feedback resources. The first indication information and the second indication information respectively include time indication information between data and feedback, indication information of feedback resources, and indication information for confirming the feedback codebook. Among them, K1 represents the time indication information between data and feedback, and the indication information used to confirm the feedback codebook may include the following information:

Feedback group ID (group ID): used to indicate the feedback group to which the data belongs. For the feedback group that is successfully fed back, the feedback group ID can be released.

New feedback indicator (NFI): used to indicate whether the current feedback is new feedback or re-feedback, which can be indicated by a 1-bit inverted bit or with 1-bit information. For example, "0" means new feedback, and "1" means re-feedback.

Multiple groups of feedback request (request) information: used to indicate whether to send feedback information of multiple feedback groups together, which can be indicated by a 1-bit inverted bit or by a 1-bit information. For example, "1" means that the feedback information of multiple feedback groups needs to be sent together, and "0" means that it is not needed.

Downlink assignment indicator (DAI): used to indicate the number of data that needs to be fed back in a feedback group. DAI includes C_DAI and T_DAI, where C_DAI represents the number of accumulated data sent in the current feedback group at the current moment, and T_DAI represents the total number of data that needs to be fed back in the current feedback group at the current moment.

For example, if only K1 of the first carrier is indicated in the DCI, K1 of the second carrier is indicated in an implicit manner. The K1 of the second carrier depends on the capability of the UE. The UE can feed back HARQ information in the next time slot when the data is received, which implicitly indicates that K1=1 on the second carrier. If the UE receives data in time slot 1, the UE can send HARQ information in time slot 2 of the second carrier.

For example, for the indication information used to confirm the feedback codebook, the first carrier and the second carrier may share the indication information used to confirm the feedback codebook, that is, the feedback resources on the first carrier and the second carrier correspond to the feedback resources used to confirm the feedback The instructions of the codebook are the same. For another example, for the data on time slot 1, in the order from the first carrier C -> the first carrier B -> the first carrier A, the data starts to accumulate in sequence, then the first carrier C, the first carrier B, and the first carrier B The C_DAI on carrier A are 1, 2 and 3 respectively, and since there are a total of 3 data to be fed back in time slot 1, the T_DAI on the first carrier C, the first carrier B, and the first carrier A are all 3. .

For example, the data on the first carrier C, the first carrier B, and the first carrier A in the time slot 1 belong to the same feedback group, and group ID=0. According to the implicit indication, K1=1 of the second carrier, so the feedback resource PUCCH1 on the second carrier is located in time slot 2 (time slot 1+1). According to the DCI indication, K1=4 of the first carrier, so the feedback resource PUCCH on the first carrier is located in time slot 5 (time slot 1+4). NFI=0 is the initial value. Within the same feedback group, the NFI bit flip indicates that it is a new feedback, and request=0 indicates that multiple groups of feedback are not required. In the same way, the indication information corresponding to the feedback of the data on the first carrier C, the first carrier B, and the first carrier A corresponding to other time slots can be obtained.

For example, if the UE successfully sends feedback information on PUCCH1, group ID=0 is released. If the feedback information fails to be sent on PUCCH2, the 3 data on the first carrier C, the first carrier B, and the first carrier A in the time slot 3 can be reused group ID=0, the current feedback is a new feedback, so the NFI is reversed to 1.

For example, for the data in time slot 2, because the feedback information on PUCCH2 failed to be sent, the data in time slot 2 and time slot 4 can be used as a feedback group, and the same group ID can be used. In this case, it is only a dynamic extension of the feedback group. , It is not new data, so NFI is not reversed, and NFI is still 0. At this time, the feedback resource on the first carrier is PUCCH, and the feedback resource on the second carrier is PUCCH4.

Optionally, at least one feedback resource is included on the at least one carrier. The terminal device may select the feedback resource closest to the receiving time of the data from the at least one feedback resource and send the feedback information to the network device, and the network device may receive the feedback resource selected by the terminal device from the at least one feedback resource. The feedback information sent by the feedback resource closest to the receiving time of the data. Wherein, the receiving time may be the start time point of receiving data, it may also be the end time point of receiving data, or it may be a certain point in time or a period of time in the process of receiving data, which is not limited here. For example, as shown in Figure 6, for the data on time slot 1, K1=4 for the first carrier and K1=1 for the second carrier. Therefore, the feedback resource on the first carrier is PUCCH, and the feedback resource on the second carrier is PUCCH. It is PUCCH1. Since PUCCH1 is the closest to the data receiving time, the UE can select PUCCH1 and send HARQ information on PUCCH1, which can effectively reduce the processing delay.

Optionally, the at least one carrier includes feedback resources on the first carrier and feedback resources on the second carrier; when the feedback resources on the first carrier and the feedback resources on the second carrier When the resources overlap in the time domain, the terminal device selects at least one feedback resource from the overlapped feedback resources to send the feedback information to the network device. Wherein, the network device receives feedback information sent by at least one feedback resource selected by the terminal device from the overlapping feedback resources. Wherein, coincidence may mean that the feedback resource on the first carrier and the feedback resource on the second carrier completely coincide in the time domain, that is, the start time point and the end time point of the feedback resource are exactly the same. In the case where the feedback resource on the first carrier and the feedback resource on the second carrier partially overlap in the time domain, the feedback resource on the first carrier and the feedback resource on the second carrier may be selected to send feedback information together. For example, for the data in time slot 2, because the feedback information on PUCCH2 fails to be sent, the data in time slot 2 and time slot 4 are regarded as a feedback group. K1=1 on the first carrier, so the feedback resource on the first carrier is PUCCH, and K1=1 on the second carrier, so the feedback resource on the second carrier is PUCCH4, because the feedback resource PUCCH and the feedback resource PUCCH4 are in the time domain For complete coincidence, the UE can choose to send HARQ information on PUCCH or PUCCH4, or choose to send HARQ information on PUCCH and PUCCH4 at the same time.

It should be noted that the first carrier and the second carrier in the embodiment of the present application are used for logical distinction and do not constitute a quantitative limitation, and may include one or more first carriers, or may include one or more second carriers. At the same time, the time slot is taken as an example of a time unit in the embodiment of the present application, but the present application is not limited to this.

In the embodiment of the present application, by sending feedback information across carriers and using an auxiliary feedback channel to provide additional feedback resources, the uplink capacity can be effectively improved. In addition, the terminal device can select the feedback resource closest to the data reception time from multiple carriers to send the feedback information, which can effectively reduce the data transmission delay.

The foregoing describes in detail the methods performed by the network equipment and terminal equipment provided by the present application, and the apparatus provided by the present application is described below.

As shown in FIG. 7, FIG. 7 is a schematic structural diagram of an uplink transmission apparatus according to an embodiment of the present application. The device may include a receiving module 701, a processing module 702, and a sending module 703, where:

In one embodiment:

The receiving module 701 is configured to receive first scheduling information sent by a network device on a first carrier;

The receiving module 701 is further configured to receive second scheduling information sent by the network device on the second carrier; wherein, the first scheduling information and the second scheduling information are a subset of scheduling indication information, and the scheduling The indication information is used to indicate the information required by the terminal equipment to send uplink data;

The sending module 703 is configured to send the uplink data to the network device on the second carrier according to the first scheduling information and the second scheduling information.

Wherein, the first scheduling information and the second scheduling information include time indication information of the scheduling indication information.

Wherein, at least one of the first carrier and the second carrier is on an unlicensed spectrum.

Wherein, when the second carrier is on the unlicensed spectrum, the transmission time of the uplink data is within the channel occupancy time COT obtained by the network device by listening first and then sending the LBT.

Optionally, the sending module 703 is further configured to send the uplink data to the network device after performing LBT when the second carrier is on the unlicensed spectrum.

Optionally, the sending module 703 is further configured to: when the second carrier is on the unlicensed spectrum, the terminal device determines the destination according to at least one of the first scheduling information and the second scheduling information. The sending time of the uplink data; determining the time interval between the sending time of the uplink data and the receiving time of the second scheduling information; when the time interval is less than or equal to a preset threshold, the uplink data is sent; when the When the time interval is greater than the preset threshold, the uplink data is sent after performing LBT.

Wherein, when the time division duplex TDD mode is adopted and the first carrier is in the licensed spectrum, the uplink data of the first uplink time unit on the second carrier is adjusted to the second uplink time on the first carrier Unit, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.

In another embodiment:

The receiving module 701 is configured to receive data sent by a network device on the first carrier;

The processing module 702 is configured to select at least one carrier from the first carrier and the second carrier;

The sending module 703 is configured to send feedback information to the network device on the selected at least one carrier, where the feedback information is used to indicate the receiving status of the data;

Wherein, at least one of the first carrier and the second carrier is on a licensed spectrum.

Optionally, the sending module 703 is further configured to send the feedback information to the network device on the first carrier and the second carrier.

Optionally, the sending module 703 is further configured to send the feedback information to the network device after performing LBT on the at least one carrier.

Optionally, the receiving module 701 is further configured to receive scheduling information sent by the network device, where the scheduling information includes first indication information and second indication information, and the first indication information is used to indicate the first carrier The second indication information is used to indicate the feedback resource on the second carrier.

Wherein, the at least one carrier includes at least one feedback resource;

Optionally, the sending module 703 is further configured to select, from the at least one feedback resource, the feedback resource closest to the receiving time of the data and send the feedback information to the network device.

It should be noted that the implementation of each module can also refer to the corresponding description of the method embodiment shown in FIG. 3 or FIG. 5 to execute the method and function performed by the terminal device in the foregoing embodiment.

As shown in FIG. 8, FIG. 8 is a schematic structural diagram of another uplink transmission apparatus provided by an embodiment of the present application. The device may include a sending module 801 and a receiving module 802, where:

In one embodiment:

The sending module 801 is configured to send first scheduling information to the terminal device on the first carrier;

The sending module 801 is further configured to send second scheduling information to the terminal device on the second carrier; wherein the first scheduling information and the second scheduling information are a subset of scheduling indication information, and the scheduling indication information is used for To instruct the terminal equipment to send the information required for the uplink data;

The receiving module 802 is configured to receive the uplink data sent by the terminal equipment on the second carrier.

Optionally, the sending module 801 is further configured to send the first scheduling information to the terminal device after performing LBT on the first carrier when the first carrier is on the unlicensed spectrum.

Optionally, the sending module 801 is further configured to send the second scheduling information to the terminal device after performing LBT on the second carrier when the second carrier is on the unlicensed spectrum.

In another embodiment:

The sending module 801 is configured to send data to the terminal device on the first carrier;

The receiving module 802 is configured to receive feedback information sent by the terminal equipment on at least one carrier, where the at least one carrier is selected by the terminal equipment from the first carrier and the second carrier;

Optionally, the receiving module 801 is further configured to receive feedback information sent by the terminal equipment on the first carrier and the second carrier.

Optionally, the receiving module 802 is further configured to receive the feedback information sent by the terminal device after performing LBT on the at least one carrier.

Optionally, the sending module 801 is further configured to send scheduling information to the network device, where the scheduling information includes first indication information and second indication information, and the first indication information is used to indicate The second indication information is used to indicate the feedback resource on the second carrier.

Wherein, the at least one carrier includes at least one feedback resource;

The receiving module 802 is further configured to receive the feedback information sent by the terminal device selecting the feedback resource that is closest to the receiving time of the data from the at least one feedback resource.

It should be noted that the implementation of each module can also refer to the corresponding description of the method embodiment shown in FIG. 3 or FIG. 5 to execute the method and function performed by the network device in the foregoing embodiment.

Please continue to refer to FIG. 9, which is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 9, the terminal device may include: at least one processor 901, at least one communication interface 902, at least one memory 903, and at least one communication bus 904.

The processor 901 may be a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication bus 904 may be a standard PCI bus for interconnecting peripheral components or an extended industry standard structure EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and so on. For ease of presentation, only one thick line is used in FIG. 9, but it does not mean that there is only one bus or one type of bus. The communication bus 904 is used to implement connection and communication between these components. Among them, the communication interface 902 of the device in the embodiment of the present application is used for signaling or data communication with other node devices. The memory 903 may include volatile memory, such as nonvolatile random access memory (NVRAM), phase change RAM (PRAM), magnetoresistive random access memory (magetoresistive RAM, MRAM), etc., may also include non-volatile memory, such as at least one disk storage device, electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), flash memory devices, such as reverse or flash memory (NOR flash memory) or NAND flash memory (NAND flash memory), semiconductor devices, such as solid state disk (SSD), etc. Optionally, the memory 903 may also be at least one storage device located far away from the foregoing processor 901. Optionally, the memory 903 may also store a group of program codes, and the processor 901 may optionally also execute the programs executed in the memory 903.

In one embodiment:

Receiving the first scheduling information sent by the network device on the first carrier;

Receiving second scheduling information sent by the network device on the second carrier; wherein the first scheduling information and the second scheduling information are a subset of scheduling indication information, and the scheduling indication information is used to indicate the Information required by the terminal equipment to send uplink data;

Sending the uplink data to the network device on the second carrier according to the first scheduling information and the second scheduling information.

Optionally, the processor 901 is further configured to perform the following operations:

When the second carrier is on the unlicensed spectrum, the uplink data is sent to the network device after performing LBT.

When the second carrier is on an unlicensed spectrum, determine the transmission time of the uplink data according to at least one of the first scheduling information and the second scheduling information;

Determining a time interval between the sending time of the uplink data and the receiving time of the second scheduling information;

When the time interval is less than or equal to a preset threshold, the uplink data is sent; when the time interval is greater than the preset threshold, the uplink data is sent after performing LBT.

In another embodiment:

Receiving data sent by the network device on the first carrier;

Selecting at least one carrier from the first carrier and the second carrier;

Sending feedback information to the network device on the selected at least one carrier, where the feedback information is used to indicate the receiving status of the data;

Sending the feedback information to the network device on the first carrier and the second carrier.

After performing listening first and then sending LBT on the at least one carrier, the feedback information is sent to the network device.

Receiving scheduling information sent by the network device, where the scheduling information includes first indication information and second indication information, the first indication information is used to indicate feedback resources on the first carrier, and the second indication information Used to indicate the feedback resource on the second carrier.

Selecting the feedback resource closest to the receiving time of the data from the at least one feedback resource and sending the feedback information to the network device.

Further, the processor may also cooperate with the memory and the communication interface to perform the operation of the terminal device in the above-mentioned application embodiment.

Please continue to refer to FIG. 10, which is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in the figure, the network device may include: at least one processor 1001, at least one communication interface 1002, at least one memory 1003, and at least one communication bus 1004.

The processor 1001 may be various types of processors mentioned above. The communication bus 1004 may be a standard PCI bus for interconnecting peripheral components or an extended industry standard structure EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and so on. For ease of representation, only one thick line is used to represent in FIG. 10, but it does not mean that there is only one bus or one type of bus. The communication bus 1004 is used to implement connection and communication between these components. Among them, the communication interface 1002 of the device in the embodiment of the present application is used for signaling or data communication with other node devices. The memory 1003 may be various types of memories mentioned above. Optionally, the memory 1003 may also be at least one storage device located far away from the foregoing processor 1001. The memory 1003 stores a set of program codes, and the processor 1001 executes the programs in the memory 1003.

In one embodiment:

Sending the first scheduling information to the terminal device on the first carrier;

Send second scheduling information to the terminal device on the second carrier; wherein the first scheduling information and the second scheduling information are a subset of scheduling indication information, and the scheduling indication information is used to indicate the terminal Information required by the device to send the uplink data;

Receiving the uplink data sent by the terminal equipment on the second carrier.

Wherein, the network device sending the first scheduling information to the terminal device on the first carrier and sending the second scheduling information to the terminal device on the second carrier includes:

Optionally, the processor 1001 is further configured to perform the following operations:

When the first carrier is on an unlicensed spectrum, sending the first scheduling information to the terminal device after performing LBT on the first carrier;

When the second carrier is on an unlicensed spectrum, the second scheduling information is sent to the terminal device after performing LBT on the second carrier.

In another embodiment:

Sending data to the terminal device on the first carrier;

Receiving feedback information sent by the terminal equipment on at least one carrier, where the at least one carrier is selected by the terminal equipment from the first carrier and the second carrier;

Receiving feedback information sent by the terminal equipment on the first carrier and the second carrier.

Receiving the feedback information sent by the terminal device after performing LBT on the at least one carrier.

Send scheduling information to the network device, where the scheduling information includes first indication information and second indication information, the first indication information is used to indicate feedback resources on the first carrier, and the second indication information is used To indicate the feedback resource on the second carrier.

Receiving the feedback information sent by the terminal device selecting, from the at least one feedback resource, the feedback resource that is closest to the receiving time of the data.

Further, the processor may also cooperate with the memory and the communication interface to perform the operation of the network device in the above-mentioned application embodiment.

The embodiments of the present application also provide a chip system, which includes a processor, which is used to support terminal devices or network devices to implement the functions involved in any of the above embodiments, such as generating or processing the functions involved in the above methods. Data and/or information. In a possible design, the chip system may further include a memory, and the memory is used for necessary program instructions and data of a terminal device or a network device. The chip system can be composed of chips, or include chips and other discrete devices.

The embodiments of the present application also provide a processor, which is configured to be coupled with a memory and configured to execute any method and function involving a terminal device or a network device in any of the foregoing embodiments.

The embodiments of the present application also provide a computer program product, which when running on a computer, enables the computer to execute any method and function involving a terminal device or a network device in any of the foregoing embodiments.

The embodiment of the present application also provides an uplink transmission device, which is used to execute any method and function related to a terminal device or a network device in any of the foregoing embodiments.

An embodiment of the present application also provides a communication system, which includes at least one terminal device and at least one network device involved in any of the foregoing embodiments.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website site, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

The specific implementations described above further describe the purpose, technical solutions, and beneficial effects of the present application in further detail. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

An uplink transmission method, characterized in that the method includes:

The terminal device receives the first scheduling information sent by the network device on the first carrier;

The terminal device receives the second scheduling information sent by the network device on the second carrier; wherein, the first scheduling information and the second scheduling information are a subset of scheduling indication information, and the scheduling indication information is used To instruct the terminal equipment to send information required for uplink data;

The terminal device sends the uplink data to the network device on the second carrier according to the first scheduling information and the second scheduling information.
The method according to claim 1, wherein the first scheduling information and the second scheduling information include time indication information of the scheduling indication information.
The method according to claim 1 or 2, wherein at least one of the first carrier and the second carrier is on an unlicensed spectrum.
The method according to any one of claims 1-3, wherein when the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is obtained by the network device by listening first and then sending LBT. The channel occupies the time COT.
The method according to any one of claims 1 to 4, wherein the sending uplink data to the network device on the second carrier comprises:

When the second carrier is on the unlicensed spectrum, the terminal device sends the uplink data to the network device after performing LBT.
The method according to any one of claims 1 to 4, wherein the terminal device transmits to the network device on the second carrier according to the first scheduling information and the second scheduling information Uplink data includes:

When the second carrier is on an unlicensed spectrum, the terminal device determines the transmission time of the uplink data according to at least one of the first scheduling information and the second scheduling information;

Determining, by the terminal device, the time interval between the sending time of the uplink data and the receiving time of the second scheduling information;

When the time interval is less than or equal to a preset threshold, the terminal device sends the uplink data; when the time interval is greater than the preset threshold, the terminal device sends the uplink data after performing LBT.
The method according to any one of claims 1-6, wherein when the time division duplex TDD mode is adopted and the first carrier is in the licensed spectrum, the total value of the first uplink time unit on the second carrier is The uplink data is adjusted to a second uplink time unit on the first carrier, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.
An uplink transmission method, characterized in that the method includes:

The network device sends the first scheduling information to the terminal device on the first carrier;

The network device sends second scheduling information to the terminal device on the second carrier; wherein, the first scheduling information and the second scheduling information are a subset of scheduling indication information, and the scheduling indication information is used for Instruct the terminal equipment to send information required for uplink data;

The network device receives the uplink data sent by the terminal device on the second carrier.
The method according to claim 8, wherein the first scheduling information and the second scheduling information comprise time indication information of the scheduling indication information.
The method according to claim 8 or 9, wherein at least one of the first carrier and the second carrier is on an unlicensed spectrum.
The method according to any one of claims 7-10, wherein when the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is obtained by the network device by listening first and then sending LBT. The channel occupies the time COT.
The method according to any one of claims 8-11, wherein the network device sending the first scheduling information to the terminal device on the first carrier comprises:

When the first carrier is on an unlicensed spectrum, the network device sends the first scheduling information to the terminal device after performing LBT on the first carrier.
The method according to any one of claims 8-12, wherein the sending, by the network device, to the terminal device on the second carrier, the second scheduling information comprises:

When the second carrier is on the unlicensed spectrum, the network device sends the second scheduling information to the terminal device after performing LBT on the second carrier.
The method according to any one of claims 8-13, wherein when the time division duplex TDD mode is adopted and the first carrier is in the licensed spectrum, the total value of the first uplink time unit on the second carrier is The uplink data is adjusted to a second uplink time unit on the first carrier, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.
An uplink transmission method, characterized in that the method includes:

The terminal device receives the data sent by the network device on the first carrier;

The terminal device selects at least one carrier from the first carrier and the second carrier;

Sending, by the terminal device, feedback information to the network device on the selected at least one carrier, where the feedback information is used to indicate the receiving status of the data;

Wherein, at least one of the first carrier and the second carrier is on a licensed spectrum.
The method of claim 15, wherein the terminal device sending feedback information to the network device on the selected at least one carrier comprises:

The terminal device sends the feedback information to the network device on the first carrier and the second carrier.
The method according to claim 15 or 16, wherein the terminal device sending feedback information to the network device on the selected at least one carrier comprises:

The terminal device performs monitoring on the at least one carrier before sending the LBT, and then sends the feedback information to the network device.
The method according to any one of claims 15-17, wherein the method further comprises:

The terminal device receives scheduling information sent by the network device, where the scheduling information includes first indication information and second indication information, and the first indication information is used to indicate feedback resources on the first carrier. The second indication information is used to indicate the feedback resource on the second carrier.
The method according to any one of claims 12-18, wherein the at least one carrier includes at least one feedback resource;

The sending, by the terminal device, the feedback information to the network device on the at least one carrier includes:

The terminal device selects the feedback resource closest to the receiving time of the data from the at least one feedback resource and sends the feedback information to the network device.
An uplink transmission method, characterized in that the method includes:

The network device sends data to the terminal device on the first carrier;

Receiving, by the network device, feedback information sent by the terminal device on at least one carrier, where the at least one carrier is selected by the terminal device from the first carrier and the second carrier;

Wherein, at least one of the first carrier and the second carrier is on a licensed spectrum.
The method according to claim 20, wherein the receiving, by the network device, the feedback information sent by the terminal device on at least one carrier comprises:

The network device receives feedback information sent by the terminal device on the first carrier and the second carrier.
The method according to claim 20 or 21, wherein the receiving, by the network device, the feedback information sent by the terminal device on at least one carrier comprises:

The network device receives the feedback information sent after the terminal device performs monitoring on the at least one carrier before sending the LBT.
The method according to any one of claims 20-22, wherein the method further comprises:

The terminal device sends scheduling information to the network device, where the scheduling information includes first indication information and second indication information, and the first indication information is used to indicate feedback resources on the first carrier, and the first indication information is The second indication information is used to indicate the feedback resource on the second carrier.
The method according to any one of claims 20-23, wherein the at least one carrier includes at least one feedback resource;

The receiving, by the network device, the feedback information sent by the terminal device on at least one carrier includes:

The network device receives the feedback information that the terminal device selects from the at least one feedback resource and sends the feedback resource that is closest to the receiving time of the data.
An uplink transmission device, characterized in that the device includes:

A receiving module, configured to receive the first scheduling information sent by the network device on the first carrier;

The receiving module is further configured to receive second scheduling information sent by the network device on a second carrier; wherein, the first scheduling information and the second scheduling information are a subset of scheduling indication information, and the The scheduling indication information is used to indicate the information required by the terminal equipment to send uplink data;

The sending module is configured to send the uplink data to the network device on the second carrier according to the first scheduling information and the second scheduling information.
The apparatus according to claim 25, wherein the first scheduling information and the second scheduling information comprise time indication information of the scheduling indication information.
The apparatus according to claim 25 or 26, wherein at least one of the first carrier and the second carrier is on an unlicensed spectrum.
The apparatus according to any one of claims 25-27, wherein when the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is obtained by the network device by listening first and then sending LBT. The channel occupies the time COT.
The device of any one of claims 25-28, wherein:

The sending module is further configured to send the uplink data to the network device after performing LBT when the second carrier is on the unlicensed spectrum.
The device of any one of claims 25-29, wherein:

The sending module is further configured to determine the uplink data according to at least one of the first scheduling information and the second scheduling information when the second carrier is on the unlicensed spectrum Determining the time interval between the sending time of the uplink data and the receiving time of the second scheduling information; when the time interval is less than or equal to a preset threshold, the uplink data is sent; when the time interval is greater than When the preset threshold is used, the uplink data is sent after performing LBT.
The device according to any one of claims 25-30, wherein when the time division duplex TDD mode is adopted and the first carrier is in the licensed spectrum, the total value of the first uplink time unit on the second carrier is The uplink data is adjusted to a second uplink time unit on the first carrier, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.
An uplink transmission device, characterized in that the method includes:

A sending module, configured to send the first scheduling information to the terminal device on the first carrier;

The sending module is further configured to send second scheduling information to the terminal device on a second carrier; wherein, the first scheduling information and the second scheduling information are a subset of scheduling indication information, and the scheduling The indication information is used to indicate the information required by the terminal equipment to send the uplink data;

The receiving module is configured to receive the uplink data sent by the terminal equipment on the second carrier.
The apparatus according to claim 32, wherein the first scheduling information and the second scheduling information comprise time indication information of the scheduling indication information.
The apparatus according to claim 32 or 33, wherein at least one of the first carrier and the second carrier is on an unlicensed spectrum.
The apparatus according to any one of claims 32-34, wherein when the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is obtained by the network device by first listening and then sending LBT. The channel occupies the time COT.
The device according to any one of claims 32-35, wherein:

The sending module is further configured to send the first scheduling information to the terminal device after performing LBT on the first carrier when the first carrier is on the unlicensed spectrum.
The device according to any one of claims 32-36, wherein:

The sending module is further configured to send the second scheduling information to the terminal device after performing LBT on the second carrier when the second carrier is on the unlicensed spectrum.
The device according to any one of claims 32-37, wherein when the time division duplex TDD mode is adopted and the first carrier is in the licensed spectrum, all the values of the first uplink time unit on the second carrier are The uplink data is adjusted to a second uplink time unit on the first carrier, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.
An uplink transmission device, characterized in that the device includes:

A receiving module for receiving data sent by a network device on the first carrier;

A processing module, configured to select at least one carrier from the first carrier and the second carrier;

A sending module, configured to send feedback information to the network device on the selected at least one carrier, where the feedback information is used to indicate the receiving status of the data;

Wherein, at least one of the first carrier and the second carrier is on a licensed spectrum.
The device of claim 39, wherein:

The sending module is further configured to send the feedback information to the network device on the first carrier and the second carrier.
The device according to claim 39 or 40, wherein:

The sending module is further configured to perform listening before sending LBT on the at least one carrier and then sending the feedback information to the network device.
The device according to any one of claims 39-41, wherein:

The receiving module is further configured to receive scheduling information sent by the network device, where the scheduling information includes first indication information and second indication information, and the first indication information is used to indicate feedback on the first carrier Resource, the second indication information is used to indicate the feedback resource on the second carrier.
The apparatus according to any one of claims 39-42, wherein the at least one carrier includes at least one feedback resource;

The sending module is further configured to select the feedback resource closest to the receiving time of the data from the at least one feedback resource and send the feedback information to the network device.
An uplink transmission device, characterized in that the device includes:

The sending module is used to send data to the terminal device on the first carrier;

A receiving module, configured to receive feedback information sent by the terminal equipment on at least one carrier, where the at least one carrier is selected by the terminal equipment from the first carrier and the second carrier;

Wherein, at least one of the first carrier and the second carrier is on a licensed spectrum.
The device of claim 44, wherein:

The receiving module is further configured to receive feedback information sent by the terminal equipment on the first carrier and the second carrier.
The device of claim 44 or 45, wherein:

The receiving module is further configured to receive the feedback information sent after the terminal device performs monitoring on the at least one carrier before sending the LBT.
The device of any one of claims 44-46, wherein:

The sending module is further configured to send scheduling information to the network device, where the scheduling information includes first indication information and second indication information, and the first indication information is used to indicate feedback resources on the first carrier , The second indication information is used to indicate feedback resources on the second carrier.
The apparatus according to any one of claims 44-47, wherein the at least one carrier includes at least one feedback resource;

The receiving module is further configured to receive the feedback information sent by the terminal device selecting the feedback resource that is closest to the receiving time of the data from the at least one feedback resource.
A communication device, characterized in that it comprises a processor and a memory;

The memory is used to store computer execution instructions;

The processor is configured to execute computer-executable instructions stored in the memory, so that the communication device executes the method according to any one of claims 1-7 or 15-19.
A communication device, characterized in that it comprises a processor and an interface circuit;

The interface circuit is configured to receive code instructions and transmit them to the processor; the processor runs the code instructions to execute the method according to any one of claims 1-7 or 15-19.
A communication device, characterized in that it comprises a processor and a memory;

The memory is used to store computer execution instructions;

The processor is configured to execute computer-executable instructions stored in the memory, so that the communication device executes the method according to any one of claims 8-14 or 20-24.
A communication device, characterized in that it comprises a processor and an interface circuit;

The interface circuit is configured to receive code instructions and transmit them to the processor; the processor runs the code instructions to execute the method according to any one of claims 8-14 or 20-24.
A readable storage medium for storing instructions. When the instructions are executed, the method according to any one of claims 1-7 or 15-19 is realized.
A readable storage medium for storing instructions. When the instructions are executed, the method according to any one of claims 8-14 or 20-24 is realized.