Uplink transmission method and device

Abstract

The embodiment of the present application provides an uplink transmission method, which can be applied to communication systems, such as V2X, LTE-V, MTC, IoT, LTE-M, and M2M, and can improve uplink capacity. The method includes: a terminal device receives first scheduling information sent by a network device on a first carrier, and second scheduling information sent on a second carrier; wherein the first scheduling information and the second scheduling information are subsets of scheduling indication information, and the scheduling indication information is used to indicate information required for the terminal device to send uplink data; according to the first scheduling information and the second scheduling information, the uplink data is sent to the network device on the second carrier.

Description

Technical Field

[0001] The present application relates to the field of wireless network technology, and in particular to an uplink transmission method and device. Background Art

[0002] 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 license assisted access (LAA) and enhanced LAA (eLAA) technologies in release 13 (R13) and R14, respectively, that is, the non-standalone deployment of Long Term Evolution (LTE) / LTE-Advanced (LTE-A) LTE systems on unlicensed spectrum to maximize the use of unlicensed spectrum resources through the assistance of licensed spectrum. In the existing technical solutions, the uplink capacity can be increased by auxiliary uplink carriers in low frequency bands. However, due to the limited available frequency band bandwidth resources, there is still a problem of insufficient uplink capacity. Summary of the invention

[0003] The embodiments of the present application provide an uplink transmission method and device, which can be applied to communication systems, such as vehicle to everything (V2X), LTE vehicle network communication (LTE-Vehicle, LTE-V), machine type communication (machine type communication, MTC), machine to machine network (machine to machine, M2M), Internet of Things (Internet of Things, IoT), LTE machine to machine network (LTE-machine to machine, LTE-M), which can improve the capacity of uplink communication.

[0004] In the first aspect, the 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; receives second scheduling information sent by the network device on a second carrier; wherein the first scheduling information and the second scheduling information are subsets of scheduling indication information, and the scheduling indication information is used to indicate information required for the terminal device to send uplink data; according to the first scheduling information and the second scheduling information, uplink data is sent to the network device on the second carrier. By indicating uplink transmission on the second carrier in a cross-carrier two-step scheduling manner, the capacity of uplink communication is effectively improved.

[0005] In one possible design, the first scheduling information and the second scheduling information include time indication information of the scheduling indication information. The two scheduling information are used to collaboratively indicate the uplink transmission time, thereby reducing data transmission delay.

[0006] 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, uplink communication capacity can be further improved by sending uplink data on the unlicensed spectrum.

[0007] In another possible design, 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 through the listen-before-send LBT, thereby ensuring that the uplink data can be sent in time.

[0008] In another possible design, when the second carrier is in the unlicensed spectrum, the terminal device performs LBT and then sends uplink data to the network device. By performing LBT, the channel of the second carrier is ensured to be in an idle state, thereby improving the success rate of data transmission.

[0009] In another possible design, when the second carrier is on the unlicensed spectrum, the terminal device determines the sending time of the uplink data according to at least one of the first scheduling information and the second scheduling information; determines 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 executes LBT and then sends the uplink data. This ensures the success rate of data transmission.

[0010] In another possible design, when the time division duplex TDD mode is adopted and the first carrier is in the authorized 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, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit. This avoids interference to the data transmission on the second carrier and improves the success rate of data transmission.

[0011] 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 receiving the second scheduling information, the terminal device can determine the data transmission time, and then send the uplink data according to the determined transmission time. By first sending the first scheduling information, the terminal device can accurately transmit the data in advance, and then send the second scheduling information to trigger the terminal device to send the uplink data, which can effectively reduce the data transmission delay.

[0012] 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 the terminal device on a second carrier; wherein the first scheduling information and the second scheduling information are subsets of scheduling indication information, and the scheduling indication information is used to indicate information required for the terminal device to send uplink data; and receiving uplink data sent by the terminal device on the second carrier. By indicating uplink transmission on the second carrier in a cross-carrier two-step scheduling manner, the capacity of uplink communication is effectively improved.

[0013] In one possible design, the first scheduling information and the second scheduling information include time indication information of the scheduling indication information. The two scheduling information are used to collaboratively indicate the uplink transmission time, thereby reducing data transmission delay.

[0014] 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, uplink communication capacity can be further improved by sending uplink data on the unlicensed spectrum.

[0015] In another possible design, 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 through the listen-before-send LBT, thereby ensuring that the uplink transmission can be sent in time.

[0016] In another possible design, when the first carrier is in an unlicensed spectrum, the network device performs LBT on the first carrier and then sends the first scheduling information to the terminal device. By performing LBT, the channel of the first carrier is ensured to be in an idle state, thereby improving the success rate of scheduling information transmission.

[0017] In another possible design, when the second carrier is in the unlicensed spectrum, the network device performs LBT on the second carrier and then sends the second scheduling information to the terminal device. By performing LBT, the channel of the second carrier is ensured to be in an idle state, thereby improving the success rate of scheduling information transmission.

[0018] In another possible design, when the time division duplex TDD mode is adopted and the first carrier is in the authorized 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, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit. This avoids interference to the data transmission on the second carrier and improves the success rate of data transmission.

[0019] In a third aspect, an embodiment of the present application provides an uplink transmission method, comprising: a terminal device receives data sent by a network device on a first carrier; selects at least one carrier from the first carrier and the second carrier; sends feedback information to the network device on the selected at least one carrier, the feedback information is used to indicate the reception status of the data; wherein at least one of the first carrier and the second carrier is on an authorized spectrum. By sending feedback information across carriers and using an auxiliary feedback channel to provide additional feedback resources, the capacity of uplink communication is effectively improved.

[0020] In one 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 by the first carrier and the second carrier to improve the capacity of uplink communication.

[0021] In another possible design, the terminal device performs LBT on at least one carrier and then sends feedback information to the network device. By performing LBT, the unlicensed spectrum is ensured to be in an idle state, thereby improving the success rate of feedback information transmission.

[0022] In another possible design, a terminal device receives scheduling information sent by a network device, where the scheduling information includes first indication information and second indication information, where the first indication information is used to indicate feedback resources on a first carrier, and the second indication information is used to indicate feedback resources on a second carrier. Feedback resources are indicated by scheduling information to avoid collision of feedback resources and improve the success rate of feedback information transmission.

[0023] In another possible design, at least one carrier includes at least one feedback resource; the terminal device selects a feedback resource closest to the reception time of the data from the at least one feedback resource to send feedback information to the network device, which can effectively reduce the transmission delay of the data.

[0024] In another possible design, at least one carrier includes feedback resources on a first carrier and feedback resources on a second carrier; when the feedback resources on the first carrier overlap with the feedback resources on the second carrier in the time domain, the terminal device selects at least one feedback resource from the overlapping feedback resources to send feedback information to the network device.

[0025] In another possible design, the first indication information adopts a display indication method or an implicit indication method, or the second indication information adopts a display indication method or an implicit indication method.

[0026] In another possible design, the first indication information and the second indication information are the same indication information. By indicating the feedback resources on the first carrier and the feedback resources on the second carrier through one indication information, signaling overhead can be reduced.

[0027] In another possible design, the first indication information and the second indication information are indicated by at least one of the radio resource control RRC and the downlink control information DCI.

[0028] In a fourth aspect, an embodiment of the present application provides an uplink transmission method, comprising: a network device sending data to a terminal device on a first carrier; receiving feedback information sent by the terminal device on at least one carrier, wherein 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 an authorized spectrum. By sending feedback information across carriers and providing additional feedback resources using an auxiliary feedback channel, the capacity of uplink communication is effectively improved.

[0029] In one possible design, the network device receives feedback information sent by the terminal device on the first carrier and the second carrier. The feedback information is transmitted by the first carrier and the second carrier together to increase the uplink capacity.

[0030] In another possible design, the network device receives feedback information sent by the terminal device after performing LBT on at least one carrier. By performing LBT, the unlicensed spectrum is ensured to be idle, thereby improving the success rate of feedback information transmission.

[0031] In another possible design, the terminal device sends scheduling information to the network device, the scheduling information including 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 feedback resources on the second carrier. The feedback resources are indicated by the scheduling information, so that collision of feedback resources is avoided and the success rate of feedback information transmission is improved.

[0032] In another possible design, at least one carrier includes at least one feedback resource; the network device receives feedback information sent by the terminal device from the at least one feedback resource, which is the feedback resource closest to the reception time of the data. This can effectively reduce the transmission delay of the data.

[0033] In the fifth aspect, an embodiment of the present application provides an uplink transmission device, which is configured to implement the methods and functions performed by the terminal equipment in the above-mentioned first and third aspects, and is implemented by hardware / software, and its hardware / software includes modules corresponding to the above-mentioned functions.

[0034] In the sixth aspect, an embodiment of the present application provides another uplink transmission device, which is configured to implement the methods and functions performed by the network equipment in the second and fourth aspects above, and is implemented by hardware / software, and its hardware / software includes modules corresponding to the above functions.

[0035] In the seventh aspect, an embodiment of the present application provides a communication device, comprising a processor and a memory; the memory is used to store computer execution instructions; the processor is used to execute the computer execution instructions stored in the memory, so that the communication device performs the methods and functions performed by the terminal device in the above-mentioned first and third aspects.

[0036] In an eighth aspect, an embodiment of the present application provides a communication device, comprising a processor and an interface circuit; the interface circuit is used to receive code instructions and transmit them to the processor; the processor runs the code instructions to execute the methods and functions performed by the terminal device in the above-mentioned first and third aspects.

[0037] In the ninth aspect, an embodiment of the present application provides a communication device, comprising a processor and a memory; the memory is used to store computer execution instructions; the processor is used to execute the computer execution instructions stored in the memory, so that the communication device performs the methods and functions performed by the network equipment in the above-mentioned second and fourth aspects.

[0038] In the tenth aspect, an embodiment of the present application provides a communication device, comprising a processor and an interface circuit; the interface circuit is used to receive code instructions and transmit them to the processor; the processor runs the code instructions to execute the methods and functions performed by the network equipment in the second and fourth aspects above.

[0039] In an eleventh aspect, an embodiment of the present application provides a readable storage medium for storing instructions, which, when executed, enables the method described in any one of the first and third aspects to be implemented.

[0040] In the twelfth aspect, an embodiment of the present application provides a readable storage medium for storing instructions, which, when executed, enables the method described in any one of the second and fourth aspects to be implemented.

[0041] In the thirteenth aspect, an embodiment of the present application provides a communication system, comprising a terminal device in any of the above aspects and a network device in any of the above aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0043] Figure 1 is a schematic diagram of the architecture of a communication system 100 provided in an embodiment of the present application;

[0044] Figure 2 is a schematic diagram of a carrier operating mode provided in an embodiment of the present application;

[0045] Figure 3 It is a flowchart of an uplink transmission method provided in an embodiment of the present application;

[0046] Figure 4 It is a schematic diagram of sending uplink data provided by an embodiment of the present application;

[0047] Figure 5 It is a flowchart of an uplink transmission method provided in an embodiment of the present application;

[0048] Figure 6 is a schematic diagram of a feedback resource provided in an embodiment of the present application;

[0049] Figure 7 It is a structural diagram of an uplink transmission device provided in an embodiment of the present application;

[0050] Figure 8 It is a structural diagram of another uplink transmission device provided in an embodiment of the present application;

[0051] Fig. 9 It is a structural schematic diagram of a terminal device proposed in an embodiment of the present application;

[0052] Fig.10 It is a structural diagram of a network device proposed in an embodiment of the present application. DETAILED DESCRIPTION

[0053] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0054] like Figure 1 As shown, Figure 1It is a schematic diagram of the architecture of a communication system 100 provided in 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 (new radio access technology, NR) system, or it may be other communication systems. The communication system 100 may include a network device 110 and terminal devices 101 to 106. It should be understood that the communication system 100 to which the method of the embodiment of the present application can be applied may include more or fewer network devices or terminal devices. The network device or terminal device may be hardware, or it may be functionally divided software or a combination of the above two. The network device and the terminal device may communicate through other devices or network elements. In the communication system 100, the network device 110 may send downlink data to the terminal devices 101 to 106. Of course, the terminal devices 101 to 106 may also send uplink data to the network device 110. Terminal devices 101 to 106 may be user equipment (UE), or may be a cellular phone, a smart phone, a portable computer, a handheld communication device, a handheld computing device, a satellite radio, a global positioning system, a personal digital assistant (PDA), and / or any other suitable device for communicating on the wireless communication system 100, etc. Network device 110 may be a base station, an access point, a node B, an evolved node (environment Bureau, eNB) or a 5G base station (next generation base station, gNB), which refers to a device in an access network that communicates with a wireless terminal through one or more sectors on an air interface. By converting received air interface frames into IP packets, network device 110 may act as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol network. Network device 110 may also coordinate the management of 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, an Internet of Things (IoT) or other networks. In addition, the terminal devices 104 to 106 may also form a communication system.

[0055] Communication systems deployed on unlicensed spectrum usually use or share wireless resources in a competitive manner. Stations, such as stations (STAs) under the IEEE 802.11 protocol framework, include access points (APs) and non-AP stations (STAs), which use the same or similar principles to fairly compete for and use unlicensed spectrum resources. Generally, before sending a signal, a station first monitors whether the unlicensed spectrum is idle, such as judging its busy or idle state by the size of the received power on the unlicensed spectrum. If the received power is less than a certain threshold, the unlicensed spectrum is considered to be idle and a 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 talking (LBT). Common LBTs are as follows: (1) Cat 1 LBT: no LBT is performed; (2) Cat 2 LBT: non-random backoff LBT method; (3) Cat 4 LBT: random backoff LBT method.

[0056] like Figure 2 As shown, Figure 2 It is a schematic diagram of a carrier working mode provided in an embodiment of the present application. (a): The NR system can operate in an unpaired spectrum, corresponding to the time division duplex mode (TDD), that is, by performing downlink (DL) and uplink (UL) transmissions at different times, a duplex mode of interaction between network equipment and terminal equipment is realized. (b): The NR system can also operate in a paired spectrum, corresponding to the frequency division duplex mode (FDD), that is, by performing DL and UL transmissions on different carriers (frequency bands), a duplex mode of interaction between network equipment and terminal equipment is realized. (c): The TDD NR system can also be additionally configured with a supplementary uplink (SUL) carrier. In this case, an NR cell includes a TDD carrier and a SUL carrier, wherein the transmission direction in the TDD carrier can be uplink, downlink or reserved, but the transmission direction of the SUL carrier cannot be downlink, but may be uplink or reserved.

[0057] In the prior art, the uplink capacity is increased by auxiliary uplink carriers in low frequency bands, but the available frequency band bandwidth (such as 2.1GHz frequency band) is limited, with only 20MHz or 40MHz available bandwidth, and the uplink capacity that can be increased is limited. In particular, in TDD systems, due to the uplink and downlink ratio, there are problems of 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.

[0058] like Figure 3 As shown, Figure 3 1 is a flow chart of an uplink transmission method provided in an embodiment of the present application. The steps in the embodiment of the present application at least include:

[0059] S301, a network device sends first scheduling information to a terminal device on a first carrier, and sends second scheduling information to the terminal device on a second carrier, wherein the first scheduling information and the second scheduling information are subsets of scheduling indication information, and the scheduling indication information is used to indicate information required for the terminal device to send uplink data.

[0060] It should be noted that the order in which the network device sends the first scheduling information and sends 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. After the terminal device receives the second scheduling information, it can determine the data transmission time, and then send the uplink data according to the determined transmission time. Alternatively, the network device can also send the first scheduling information to the terminal device on the first carrier at the same time, and send the second scheduling information to the terminal device on the second carrier. Alternatively, the network device can also send the second scheduling information first, and the terminal device performs data preparation after receiving the second scheduling information. The network device can then send the first scheduling information to the terminal device. After the terminal device receives the first scheduling information, it can determine the data transmission time, and then send the uplink data according to the determined transmission time.

[0061] In a possible implementation, the first scheduling information may be part of the indication information in the above-mentioned scheduling indication information, and the second scheduling information may also be part of the indication information in the above-mentioned scheduling indication information, and the first scheduling information may be the same as or different from the second scheduling information. Alternatively, the first scheduling information may be part of the indication information in the above-mentioned scheduling indication information, and the second scheduling information may be the remaining indication information in the above-mentioned scheduling indication information, and the first scheduling information and the second scheduling information may constitute complete scheduling indication information. Alternatively, the first scheduling information and the second scheduling information simultaneously include at least one indication information in the scheduling indication information, 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.

[0062] 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, etc.

[0063] 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 both the first carrier and the second carrier are on an unlicensed spectrum. The communication system of an embodiment of the present application can adopt a TDD operating mode or an FDD operating mode.

[0064] Optionally, when the first carrier is on an unlicensed spectrum, the network device needs to perform LBT or clear channel assessment (CCA) to perform channel sensing before sending the first scheduling information on the first carrier to obtain the channel occupancy time (COT), and then send the first scheduling information to the terminal device within the channel occupancy time.

[0065] Optionally, when the second carrier is on an unlicensed spectrum, the network device needs to perform LBT or CCA to perform channel sensing before sending the second scheduling information on the second carrier to obtain the channel occupancy time, and then send the second scheduling information to the terminal device during the channel occupancy time.

[0066] The scheduling indication information may include scheduling information format (identifier for DCI format) indication information, carrier (carrier indicator) indication information, bandwidth part indication information (bandwidth partindicator), frequency domain resource indication information (frequency domain resource assignment), 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 automatic repeat request (hybrid autorepeat request, HARQ) indication information, HARQ codebook indication information (for example, 1st downlink assignment index and / or 2nd downlink assignment index), power control (transmit power control, TPC) indication information (for example, TPC command for scheduled PUSCH), sounding reference signal indication information (sounding reference signal resource indicator, SRS resource indicator), precoding indication information and layer indication information (precoding information and number of layers), antenna port information (antennaports), 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 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 indication information (such as channel access type or channel access priority), data to HARQ feedback time indication information (PDSCH-to-HARQ_feedback timing indicator), PUCCH resource indication information (PUCCH resourceindicator), etc. Among them, the scheduling indication information includes a combination of one or more of the above indication information. ,

[0067] Among them, 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 at least one of reference frequency domain position, absolute frequency domain position, frequency domain offset information, and frequency domain range.

[0068] Optionally, the first scheduling information and the second scheduling information include time indication information of the scheduling indication information. The terminal device can 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 slots, and the second scheduling information indicates that the second time offset is offset2 time slots, wherein offset1 and offset2 are both integers greater than or equal to 0, then the time slot at which the terminal device sends uplink data is the (n+offset1+offset2)th time slot. Alternatively, 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, then the time point at which the terminal device sends uplink data is m+offset1, wherein m and offset1 are both numbers greater than or equal to 0.

[0069] For example, the first scheduling information includes a first effective time and a first time offset offset1. The first scheduling information may indicate a time point or a time slot. The terminal device may determine the first effective time range [p, q] for sending the second scheduling information based on the first effective time in the first scheduling information, that is, the time point t for sending the second scheduling information should be between the time point p and the time point q. If the second scheduling information is received within the first effective time range, the time point for the terminal device to send the uplink data is t+offset1, where t, offset1, p and q are all numbers greater than or equal to 0. Alternatively, the terminal device may determine the first effective time range [p, q] for sending the second scheduling information based on the first effective time in the first scheduling information, that is, the time slot t for sending the second scheduling information should be between the pth time slot and the qth time slot. If the second scheduling information is received within the first effective time range, the time slot for the terminal device to send the uplink data is the (t+offset1)th time slot. Wherein, t, offset1, p and q are all integers greater than or equal to 0. It can be understood that the specific indication method may also be other methods, which are not limited in this application.

[0070] Optionally, the first scheduling information may be in the form of an explicit indication or an implicit indication, and the second scheduling information may also be in the form of an explicit indication or an implicit indication.

[0071] For example, Figure 4 As shown, Figure 4 This is a schematic diagram of uplink data transmission provided in an embodiment of the present application. Among them, trigger A represents the first scheduling information received at the first moment, and trigger B represents the second scheduling information received at the second moment. U represents the uplink time unit, D represents the downlink time unit, and S represents the special time unit, which can be used for uplink and downlink switching exemplarily. The first scheduling information includes all indication information in the scheduling indication information except the time domain indication information, and the time domain indication information is carried in the second scheduling information. The terminal device can 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 trigger B can 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 by the second scheduling information.

[0072] Optionally, the indication method of 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), sidelink control information (SCI) and radio resource control (RRC) signaling, etc.

[0073] Optionally, when the second carrier is on an 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, and before performing the uplink transmission, the terminal device needs to perform LBT. In 3GPP's research on LAA, there are four types of LBT operations:

[0074] Cat 1: CCA detection is not performed before data is sent;

[0075] Cat2: LBT mechanism without random backoff;

[0076] Cat 3: Random backoff LBT mechanism with fixed contention window;

[0077] Category 4: Random backoff LBT mechanism with variable contention window.

[0078] In an embodiment of the present application, the operation type of performing LBT may be Cat1 LBT, Cat2 LBT or Cat4 LBT.

[0079] Optionally, when the second carrier is in an unlicensed spectrum, the transmission time of the uplink data is within a channel occupancy time COT acquired by the network device through the listen-before-send LBT. Figure 4 As shown, the network device performs LBT in the 3rd time unit and the 4th time unit, and the 5th time unit to the last time unit is the channel occupation time COT. The terminal device can send uplink data to the network device in the 5th time unit to the last time unit.

[0080] Optionally, when the second carrier is on an unlicensed spectrum, the terminal device may determine the sending time of the uplink data according to at least one of the first scheduling information and the second scheduling information; and then determine the time interval between the sending time of the uplink data and the receiving time of the second scheduling information, wherein the interval time may be 16us; when the time interval is less than or equal to a preset threshold, the terminal device may directly send the uplink data without performing LBT or performing Cat 1 LBT. When the time interval is greater than the preset threshold, the terminal device sends the uplink data after performing LBT.

[0081] It should be noted that the sending time of the uplink data can be a time period, a starting time point or an ending time point, or a time point within the time period. The receiving time of the second scheduling information can be a time period, a starting time point or an ending time point, or a time point within the time period. The time interval can be the difference between the starting time point of sending the uplink data and the ending time point of receiving the second scheduling information, and the time interval can also be the difference between the starting time point of sending the uplink data and the starting time point of receiving the second scheduling information. The time interval can also be other values, which will not be repeated here.

[0082] Optionally, when the time division duplex (TDD) mode is adopted and the first carrier is in the authorized 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, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit. Figure 4 As shown, the terminal device sends uplink data in the 5th uplink time unit to the 14th uplink time unit on the second carrier. Since the 9th time unit, the 13th time unit and the 14th time unit on the first carrier 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, the 13th time unit and the 14th time unit on the first carrier.

[0083] It should be noted that the time unit involved in the present application may be a symbol, a slot, a mini-slot, a subframe, a transmission time interval (TTI), etc., or seconds (s), milliseconds (ms), microseconds (us), etc. The frequency domain unit involved in the present application may be a subcarrier, a resource element (RE), a resource block (RB), etc., or Hertz (Hz), etc.

[0084] 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 quantity limitation, and may include one or more first carriers and may also include one or more second carriers.

[0085] In the embodiment of the present application, since the second carrier can be configured with a larger bandwidth (for example, not only the 2.1 GHz frequency band bandwidth can be configured, but also other unlicensed spectrum bandwidths can be configured), the uplink capacity can be effectively improved by instructing the uplink transmission on the second carrier in a cross-carrier two-step scheduling manner. In addition, after receiving the first scheduling information, the terminal device can start preparing data, and then after receiving the second scheduling information, it can determine the sending time of the uplink data, and then perform uplink transmission according to the determined sending time, which can reduce the data transmission delay.

[0086] like Figure 5 As shown, Figure 5 1 is a flow chart of an uplink transmission method provided in an embodiment of the present application. The steps in the embodiment of the present application at least include:

[0087] S501, a network device sends data to a terminal device on a first carrier, and the terminal device receives the data sent by the network device on the first carrier.

[0088] S502, the terminal device selects at least one carrier from the first carrier and the second carrier;

[0089] 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 reception status of the data; wherein at least one of the first carrier and the second carrier is on an authorized spectrum.

[0090] Specifically, after receiving the data, the terminal device determines the reception status of the data. For example, when the data is correctly received, A (ACK) is fed back, otherwise N (NACK) is fed back, and then at least one carrier is selected from the first carrier and the second 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 can also select the second carrier and send feedback information to the network device on the second carrier. The terminal device can 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. The feedback information on the first carrier and the feedback information on the second carrier can be exactly the same, or the feedback information on the first carrier is part of all feedback information that needs to be sent, and the feedback information on the second carrier is the remaining feedback information of all feedback information that needs to be sent. The feedback information can be HARQ information.

[0091] The first carrier may be on an authorized spectrum, or the second carrier may be on an authorized spectrum, or both the first carrier and the second carrier may be on an authorized spectrum. In an embodiment of the present application, the terminal device may select a carrier on an authorized spectrum, or may select at least two carriers on authorized spectrum, or may select a carrier on an authorized spectrum and a carrier on an unlicensed spectrum, and the present application is not limited thereto.

[0092] Optionally, when at least one of the selected carriers is on an unlicensed spectrum, the terminal device may send feedback information to the network device after performing LBT on 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 an 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.

[0093] 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, wherein the scheduling information includes first indication information and second indication information, wherein the first indication information is used to indicate feedback resources on the first carrier, and the second indication information is used to indicate feedback resources on the second carrier. The scheduling information may include at least one of downlink control information DCI, sideline control information SCI, or radio resource control RRC signaling. The first indication information and the second indication information may be carried in the same scheduling information, such as 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.

[0094] The first indication information and the second indication information may include one or more of the following indication information: time indication information between data and feedback, indication information of feedback resources, and indication information for confirming feedback codebooks, etc. The time indication information between data and feedback may be implemented by indicating the time offset information between the transmitted data and the feedback information (HARQ information) corresponding thereto, for example, it may be indicated by a PDSCH-to-HARQ_feedback timingindicator. The indication information of feedback resources may be implemented by indicating the resources (such as PUCCH) used to carry feedback information, for example, it may be indicated by PUCCH resource indication information (PUCCH resource indicator). The indication information for confirming the feedback codebook may be implemented by indicating the size of the HARQ codebook, for example, it may be indicated by a downlink assignment index (DAI).

[0095] 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 includes two independent time indication information from data to feedback, the first indication information is the time indication information from one data to feedback in the scheduling information, and the second indication information is the time indication information from another data to feedback in the scheduling information. When the scheduling information includes one time indication information from data to feedback, the first indication information and the second indication information may share one time indication information from data to feedback.

[0096] Optionally, the first indication information and the second indication information may be indicated by two domain values, respectively. For example, a PUCCH resource indicator may be indicated by two domain values ​​in the DCI, where PUCCH resource indicator 1 indicates the PUCCH resource position on the first carrier, and PUCCH resource indicator 2 indicates the PUCCH resource position on the second carrier.

[0097] Optionally, the first indication information and the second indication information may be indicated by at least one of the radio resource control RRC and the downlink control information DCI. For example, in the RRC signaling, for each PUCCH resource in a PUCCH resource set (PUCCHresource set), the PUCCH resource position located on the first carrier or the second carrier is defined respectively, that is, each PUCCH resource in the RRC signaling actually contains the indication information of the two PUCCH resources on the first carrier and the second carrier. The UE first determines the corresponding PUCCHresource set according to the HARQ information to be transmitted, and then determines the corresponding PUCCHresource according to the PUCCH resource indicator included in the DCI, and finally obtains the PUCCH resource position on the first carrier and the second carrier according to the PUCCH resource included in the RRC signaling.

[0098] Optionally, the first indication information adopts an explicit indication method or an implicit indication method, or the second indication information adopts an explicit indication method or an implicit indication method. For example, the first indication information is the time indication information between the data and the feedback included in the scheduling indication, which is used to indicate the feedback resources of the first carrier, and the second indication information adopts an implicit indication. Or the second indication information is the time indication information between the data and the feedback included in the scheduling indication, which is used to indicate the feedback resources 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 method. The following is a detailed description through examples.

[0099] like Figure 6 As shown, Figure 6: is a schematic diagram of a feedback resource provided in an embodiment of the present application. Three first carriers are on the authorized spectrum, and one second carrier is on the unauthorized spectrum. Each carrier includes multiple feedback resources. The first indication information and the second indication information respectively include time indication information from data to feedback, indication information of the feedback resource, and indication information for confirming the feedback codebook. Among them, K1 represents the time indication information from data to feedback, and the indication information for confirming the feedback codebook may include the following information:

[0100] Feedback group ID: used to indicate the feedback group to which the data belongs. For a feedback group to which feedback is successful, the feedback group ID can be released.

[0101] 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 inversion bit or 1-bit information. For example, "0" indicates new feedback and "1" indicates re-feedback.

[0102] Multiple feedback request information: used to indicate whether to send feedback information of multiple feedback groups together, which can be indicated by 1 bit inversion bit indication or 1 bit information indication. For example, "1" indicates that the feedback information of multiple feedback groups needs to be sent together, and "0" indicates that it is not necessary.

[0103] 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 indicates the number of data sent cumulatively in the current feedback group at the current moment, and T_DAI indicates the total number of data that needs to be fed back in the current feedback group at the current moment.

[0104] For example, if only K1 of the first carrier is indicated in the DCI, K1 of the second carrier is indicated implicitly. K1 of the second carrier depends on the capability of the UE. The UE can feedback HARQ information in the next time slot after receiving data, 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.

[0105] For example, for the indication information for confirming the feedback codebook, the first carrier and the second carrier can share the indication information for confirming the feedback codebook, that is, the indication information for confirming the feedback codebook corresponding to the feedback resources on the first carrier and the second carrier is the same. For another example, for the data on time slot 1, the data starts to accumulate in sequence from the first carrier C->first carrier B->first carrier A, then the C DAI on the first carrier C, the first carrier B, and the first carrier A are 1, 2, and 3 respectively, and since there are a total of 3 data that need to be fed back on time slot 1, the T_DAI on the first carrier C, the first carrier B, and the first carrier A are all 3.

[0106] For example, the data on the first carrier C, the first carrier B and the first carrier A in time slot 1 belong to the same feedback group, 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, NFI bit flipping indicates new feedback, and request = 0 indicates that multiple groups of feedback are not required. Similarly, the indication information of the feedback corresponding to the data on the first carrier C, the first carrier B and the first carrier A corresponding to other time slots can be obtained.

[0107] For example, if the UE successfully sends feedback information on PUCCH1, group ID=0 is released. If the UE fails to send feedback information on PUCCH2, the three data on the first carrier C, the first carrier B and the first carrier A in time slot 3 can reuse group ID=0, and the current feedback is new feedback, so NFI flips to 1.

[0108] For example, for the data in time slot 2, since the feedback information fails to be sent on PUCCH2, the data on time slot 2 and time slot 4 can be used as a feedback group with the same group ID. At this time, it is just a dynamic extension of the feedback group, not new data, so NFI does not flip and remains 0. At this time, the feedback resource on the first carrier is PUCCH, and the feedback resource on the second carrier is PUCCH4.

[0109] Optionally, the at least one carrier includes at least one feedback resource. The terminal device may select a feedback resource closest to the reception time of the data from the at least one feedback resource to send the feedback information to the network device, and the network device may receive feedback information sent by the feedback resource closest to the reception time of the data selected by the terminal device from the at least one feedback resource. The reception time may be the start time point of receiving the data, the end time point of receiving the data, or a certain time point or a period of time in the process of receiving the data, which is not limited here. For example, Figure 6 As shown, for the data on time slot 1, K1=4 of the first carrier and K1=1 of the second carrier, so the feedback resource on the first carrier is PUCCH, and the feedback resource on the second carrier is PUCCH1. Since PUCCH1 is closest to the reception time of the data, the UE can select PUCCH1 and send HARQ information on PUCCH1, thereby effectively reducing the processing delay.

[0110] 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 overlap with the feedback resources on the second carrier in the time domain, the terminal device selects at least one feedback resource from the overlapping feedback resources to send the feedback information to the network device. The network device receives feedback information sent by at least one feedback resource selected by the terminal device from the overlapping feedback resources. The overlap may indicate that the feedback resources on the first carrier completely overlap with the feedback resources on the second carrier in the time domain, that is, the starting time point and the ending time point of the feedback resources are exactly the same. In the case where the feedback resources on the first carrier partially overlap with the feedback resources on the second carrier in the time domain, the feedback resources on the first carrier and the feedback resources on the second carrier may be selected to send feedback information together. For example, for the data in time slot 2, since the feedback information fails to be sent in PUCCH2, the data in time slot 2 and time slot 4 are used as a feedback group. K1=1 of the first carrier, so the feedback resource on the first carrier is PUCCH, K1=1 of the second carrier, so the feedback resource on the second carrier is PUCCH4. Since the feedback resource PUCCH and the feedback resource PUCCH4 completely overlap in the time domain, the UE can choose to send HARQ information on PUCCH or PUCCH4, or choose to send HARQ information on both PUCCH and PUCCH4.

[0111] 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 quantity limitation, and may include one or more first carriers, and may also include one or more second carriers. At the same time, in the embodiment of the present application, a time slot is used as an example of a time unit, but the present application is not limited to this.

[0112] In the embodiment of the present application, by sending feedback information across carriers and using the 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 feedback information, which can effectively reduce the data transmission delay.

[0113] The above describes in detail the method performed by the network device and terminal device provided by the present application. The following describes the device provided by the present application.

[0114] like Figure 7 As shown, Figure 7 70 is a schematic diagram of the structure of an uplink transmission device provided in an embodiment of the present application. The device may include a receiving module 701, a processing module 702 and a sending module 703, wherein:

[0115] In one embodiment:

[0116] The receiving module 701 is used to receive first scheduling information sent by a network device on a first carrier;

[0117] 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 subsets of the scheduling indication information, and the scheduling indication information is used to indicate information required for the terminal device to send uplink data;

[0118] The sending module 703 is used to send the uplink data to the network device on the second carrier according to the first scheduling information and the second scheduling information.

[0119] The first scheduling information and the second scheduling information include time indication information of the scheduling indication information.

[0120] At least one of the first carrier and the second carrier is on an unlicensed spectrum.

[0121] When the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is within the channel occupancy time COT acquired by the network device through the listen-before-send LBT method.

[0122] Optionally, the sending module 703 is further used to send the uplink data to the network device after performing LBT when the second carrier is on an unlicensed spectrum.

[0123] Optionally, the sending module 703 is also used to, when the second carrier is on an unlicensed spectrum, determine by the terminal device the sending time of the uplink data based on at least one of the first scheduling information and the second scheduling information; determine the time interval between the sending time of the uplink data and the receiving time of the second scheduling information; send the uplink data when the time interval is less than or equal to a preset threshold; and send the uplink data after executing LBT when the time interval is greater than the preset threshold.

[0124] Among them, when the time division duplex TDD mode is adopted and the first carrier is in the authorized 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, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.

[0125] In another embodiment:

[0126] The receiving module 701 is used to receive data sent by the network device on the first carrier;

[0127] A processing module 702 is configured to select at least one carrier from the first carrier and the second carrier;

[0128] A sending module 703, configured to send feedback information to the network device on the selected at least one carrier, wherein the feedback information is used to indicate a reception status of the data;

[0129] At least one of the first carrier and the second carrier is on a licensed spectrum.

[0130] 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.

[0131] Optionally, the sending module 703 is further used to send the feedback information to the network device after performing LBT on the at least one carrier.

[0132] Optionally, the receiving module 701 is also used to receive scheduling information sent by the network device, the scheduling information including 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 feedback resources on the second carrier.

[0133] The at least one carrier includes at least one feedback resource;

[0134] Optionally, the sending module 703 is further configured to select a feedback resource closest to a reception time of the data from the at least one feedback resource and send the feedback information to the network device.

[0135] It should be noted that the implementation of each module can also refer to Figure 3 or Figure 5 The corresponding description of the method embodiment shown executes the method and functions performed by the terminal device in the above embodiment.

[0136] like Figure 8 As shown, Figure 8 80 is a schematic diagram of the structure of another uplink transmission device provided in an embodiment of the present application. The device may include a sending module 801 and a receiving module 802, wherein:

[0137] In one embodiment:

[0138] The sending module 801 is used to send first scheduling information to the terminal device on the first carrier;

[0139] 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 subsets of the scheduling indication information, and the scheduling indication information is used to indicate information required for the terminal device to send the uplink data;

[0140] The receiving module 802 is used to receive the uplink data sent by the terminal device on the second carrier.

[0141] The first scheduling information and the second scheduling information include time indication information of the scheduling indication information.

[0142] At least one of the first carrier and the second carrier is on an unlicensed spectrum.

[0143] When the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is within the channel occupancy time COT acquired by the network device through the listen-before-send LBT method.

[0144] Optionally, the sending module 801 is further used to send the first scheduling information to the terminal device after performing LBT on the first carrier when the first carrier is on an unlicensed spectrum.

[0145] Optionally, the sending module 801 is further used to send the second scheduling information to the terminal device after performing LBT on the second carrier when the second carrier is on an unlicensed spectrum.

[0146] Among them, when the time division duplex TDD mode is adopted and the first carrier is in the authorized 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, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.

[0147] In another embodiment:

[0148] A sending module 801, configured to send data to a terminal device on a first carrier;

[0149] A receiving module 802, configured to receive 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;

[0150] At least one of the first carrier and the second carrier is on a licensed spectrum.

[0151] Optionally, the receiving module 801 is further used to receive feedback information sent by the terminal device on the first carrier and the second carrier.

[0152] Optionally, the receiving module 802 is further used to receive the feedback information sent by the terminal device after performing LBT on the at least one carrier.

[0153] Optionally, the sending module 801 is also used to send scheduling information to the network device, the scheduling information including 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 feedback resources on the second carrier.

[0154] The at least one carrier includes at least one feedback resource;

[0155] The receiving module 802 is further configured to receive the feedback information sent by the terminal device from a feedback resource selected from the at least one feedback resource and closest to a reception time of the data.

[0156] It should be noted that the implementation of each module can also refer to Figure 3 or Figure 5 The corresponding description of the method embodiment shown executes the method and functions performed by the network device in the above embodiment.

[0157] Please continue to refer to Fig. 9 , Fig. 9 Schematic diagram of the structure of a terminal device provided in an embodiment of the present application. Fig. 9As shown, 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 .

[0158] Among them, the processor 901 can 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 logic blocks, modules and circuits described in conjunction with the contents disclosed in this application. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication bus 904 can be a peripheral component interconnect standard PCI bus or an extended industrial standard structure EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig. 9 Only one thick line is used to represent it, but it does not mean that there is only one bus or one type of bus. The communication bus 904 is used to realize the connection communication between these components. Among them, the communication interface 902 of the device in the embodiment of the present application is used to communicate signaling or data with other node devices. The memory 903 may include volatile memory, such as nonvolatile dynamic random access memory (NVRAM), phase change random access memory (PRAM), magnetoresistive random access memory (MRAM), etc., and may also include non-volatile memory, such as at least one disk storage device, electrically erasable programmable read-only memory (EEPROM), flash memory devices, such as NOR flash memory or NAND flash memory, semiconductor devices, such as solid state disk (SSD), etc. The memory 903 may also be at least one storage device located away from the aforementioned processor 901. The memory 903 may optionally store a set of program codes, and the processor 901 may optionally execute the program executed in the memory 903 .

[0159] In one embodiment:

[0160] Receiving first scheduling information sent by a network device on a first carrier;

[0161] Receiving second scheduling information sent by the network device on the second carrier; wherein the first scheduling information and the second scheduling information are subsets of scheduling indication information, and the scheduling indication information is used to indicate information required for the terminal device to send uplink data;

[0162] The uplink data is sent to the network device on the second carrier according to the first scheduling information and the second scheduling information.

[0163] The first scheduling information and the second scheduling information include time indication information of the scheduling indication information.

[0164] At least one of the first carrier and the second carrier is on an unlicensed spectrum.

[0165] When the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is within the channel occupancy time COT acquired by the network device through the listen-before-send LBT method.

[0166] Optionally, the processor 901 is further configured to perform the following operations:

[0167] When the second carrier is in an unlicensed spectrum, the uplink data is sent to the network device after performing LBT.

[0168] Optionally, the processor 901 is further configured to perform the following operations:

[0169] When the second carrier is on an unlicensed spectrum, determining a sending time of the uplink data according to at least one of the first scheduling information and the second scheduling information;

[0170] Determine a time interval between a sending time of the uplink data and a receiving time of the second scheduling information;

[0171] 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 executing LBT.

[0172] Among them, when the time division duplex TDD mode is adopted and the first carrier is in the authorized 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, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.

[0173] In another embodiment:

[0174] receiving data sent by the network device on the first carrier;

[0175] Selecting at least one carrier from the first carrier and the second carrier;

[0176] Sending feedback information to the network device on the selected at least one carrier, where the feedback information is used to indicate a reception status of the data;

[0177] At least one of the first carrier and the second carrier is on a licensed spectrum.

[0178] Optionally, the processor 901 is further configured to perform the following operations:

[0179] The feedback information is sent to the network device over the first carrier and the second carrier.

[0180] Optionally, the processor 901 is further configured to perform the following operations:

[0181] The feedback information is sent to the network device after performing listen-before-send (LBT) on the at least one carrier.

[0182] Optionally, the processor 901 is further configured to perform the following operations:

[0183] Receive scheduling information sent by the network device, where the scheduling information includes first indication information and second indication information, where the first indication information is used to indicate feedback resources on the first carrier, and the second indication information is used to indicate feedback resources on the second carrier.

[0184] Optionally, the processor 901 is further configured to perform the following operations:

[0185] A feedback resource closest to the reception time of the data is selected from the at least one feedback resource to send the feedback information to the network device.

[0186] Furthermore, the processor may cooperate with the memory and the communication interface to execute the operations of the terminal device in the above-mentioned application embodiment.

[0187] Please continue to refer to Fig.10 , Fig.10 1004 , 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 .

[0188] The processor 1001 may be any of the above mentioned processors. The communication bus 1004 may be a PCI bus or an EISA bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.10Only one thick line is used to represent it, but it does not mean that there is only one bus or one type of bus. The communication bus 1004 is used to realize the connection and communication between these components. Among them, the communication interface 1002 of the device in the embodiment of the present application is used to communicate signaling or data with other node devices. The memory 1003 can be the various types of memory mentioned above. The memory 1003 can also be at least one storage device located away from the aforementioned processor 1001. A set of program codes are stored in the memory 1003, and the processor 1001 executes the program in the memory 1003.

[0189] In one embodiment:

[0190] Sending first scheduling information to the terminal device on the first carrier;

[0191] Sending second scheduling information to the terminal device on a second carrier; wherein the first scheduling information and the second scheduling information are subsets of scheduling indication information, and the scheduling indication information is used to indicate information required for the terminal device to send the uplink data;

[0192] Receive the uplink data sent by the terminal device on the second carrier.

[0193] The first scheduling information and the second scheduling information include time indication information of the scheduling indication information.

[0194] At least one of the first carrier and the second carrier is on an unlicensed spectrum.

[0195] When the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is within the channel occupancy time COT acquired by the network device through the listen-before-send LBT method.

[0196] 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:

[0197] Optionally, the processor 1001 is further configured to perform the following operations:

[0198] 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;

[0199] Optionally, the processor 1001 is further configured to perform the following operations:

[0200] 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.

[0201] Among them, when the time division duplex TDD mode is adopted and the first carrier is in the authorized 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, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.

[0202] In another embodiment:

[0203] Sending data to a terminal device on a first carrier;

[0204] receiving 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;

[0205] At least one of the first carrier and the second carrier is on a licensed spectrum.

[0206] Optionally, the processor 1001 is further configured to perform the following operations:

[0207] Receive feedback information sent by the terminal device on the first carrier and the second carrier.

[0208] Optionally, the processor 1001 is further configured to perform the following operations:

[0209] Receive the feedback information sent by the terminal device after performing LBT on the at least one carrier.

[0210] Optionally, the processor 1001 is further configured to perform the following operations:

[0211] Scheduling information is sent to the network device, where the scheduling information includes first indication information and second indication information, where the first indication information is used to indicate feedback resources on the first carrier, and the second indication information is used to indicate feedback resources on the second carrier.

[0212] Optionally, the processor 1001 is further configured to perform the following operations:

[0213] The feedback information is received, which is sent by the feedback resource selected by the terminal device from the at least one feedback resource and which is closest to the reception time of the data.

[0214] Furthermore, the processor may cooperate with the memory and the communication interface to execute the operations of the network device in the above-mentioned application embodiment.

[0215] The embodiment of the present application also provides a chip system, which includes a processor for supporting a terminal device or a network device to implement the functions involved in any of the above embodiments, such as generating or processing the data and / or information involved in the above method. In one possible design, the chip system may also include a memory, which is used for the necessary program instructions and data of the terminal device or the network device. The chip system may be composed of a chip, or may include a chip and other discrete devices.

[0216] The embodiment of the present application also provides a processor for coupling with a memory, and for executing any method and function involving a terminal device or a network device in any of the above embodiments.

[0217] The embodiment of the present application also provides 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 above embodiments.

[0218] The embodiment of the present application also provides an uplink transmission device for executing any method and function involving a terminal device or a network device in any of the above embodiments.

[0219] 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 above embodiments.

[0220] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.

[0221] The specific implementation methods described above further describe the purpose, technical solutions and beneficial effects of this application in detail. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims

1. An uplink transmission method, characterized in that: The method comprises: The terminal device receives first scheduling information sent by the network device on the first carrier; The terminal device receives second scheduling information sent by the network device on a second carrier; wherein the first scheduling information and the second scheduling information are subsets of scheduling indication information, the scheduling indication information is used to indicate information required for the terminal device to send uplink data, at least one of the first carrier and the second carrier is on an unlicensed spectrum, the first scheduling information is a part of indication information in the scheduling indication information, the second scheduling information is another part of indication information in the scheduling indication information, and the time indication information in the first scheduling information and the time indication information in the second scheduling information are used to jointly determine an uplink transmission time; 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.

2. The method according to claim 1, characterized in that When the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is within a channel occupancy time COT acquired by the network device through the listen-before-send LBT method.

3. The method according to claim 1 or 2, characterized in that The sending uplink data to the network device on the second carrier includes: When the second carrier is on an unlicensed spectrum, the terminal device performs LBT and then sends the uplink data to the network device.

4. The method according to claim 1 or 2, characterized in that: The terminal device sending uplink data to the network device on the second carrier according to the first scheduling information and the second scheduling information includes: When the second carrier is on an unlicensed spectrum, the terminal device determines a sending time of the uplink data according to at least one of the first scheduling information and the second scheduling information; The terminal device determines a time interval between a time of sending the uplink data and a time of receiving 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 executes LBT and then sends the uplink data.

5. The method according to claim 1 or 2, characterized in that: When time division duplex TDD is adopted and the first carrier is in the authorized 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, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.

6. An uplink transmission method, characterized in that: The method comprises: The network device sends first scheduling information to the terminal device on the first carrier; The network device sends second scheduling information to the terminal device on a second carrier; wherein the first scheduling information and the second scheduling information are subsets of scheduling indication information, the scheduling indication information is used to indicate information required for the terminal device to send uplink data, at least one of the first carrier and the second carrier is on an unlicensed spectrum, the first scheduling information is a part of indication information in the scheduling indication information, the second scheduling information is another part of indication information in the scheduling indication information, and the time indication information in the first scheduling information and the time indication information in the second scheduling information are used to jointly determine an uplink transmission time; The network device receives the uplink data sent by the terminal device on the second carrier.

7. The method according to claim 6, characterized in that When the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is within a channel occupancy time COT acquired by the network device through the listen-before-send LBT method.

8. The method according to claim 6 or 7, characterized in that The network device sending first scheduling information to the terminal device on the first carrier includes: 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.

9. The method according to claim 6 or 7, characterized in that The network device sending the second scheduling information to the terminal device on the second carrier includes: When the second carrier is on an unlicensed spectrum, the network device sends the second scheduling information to the terminal device after performing LBT on the second carrier.

10. The method according to claim 6 or 7, characterized in that: When time division duplex TDD is adopted and the first carrier is in the authorized 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, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.

11. An uplink transmission device, characterized in that: The device comprises: A receiving module, configured to receive first scheduling information sent by a network device on a first carrier; The receiving module is further used 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 subsets of scheduling indication information, the scheduling indication information is used to indicate information required for a terminal device to send uplink data, at least one of the first carrier and the second carrier is on an unlicensed spectrum, the first scheduling information is a part of indication information in the scheduling indication information, the second scheduling information is another part of indication information in the scheduling indication information, and the time indication information in the first scheduling information and the time indication information in the second scheduling information are used to jointly determine an uplink transmission time; A sending module is used to send the uplink data to the network device on the second carrier according to the first scheduling information and the second scheduling information.

12. The device according to claim 11, characterized in that When the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is within a channel occupancy time COT acquired by the network device through the listen-before-send LBT method.

13. The device according to claim 11 or 12, characterized in that The sending module is further used to send the uplink data to the network device after executing LBT when the second carrier is on an unlicensed spectrum.

14. The device according to claim 11 or 12, characterized in that The sending module is further configured to, when the second carrier is on an unlicensed spectrum, determine, by the terminal device, a sending time of the uplink data according to at least one of the first scheduling information and the second scheduling information; Determine 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, send the uplink data; when the time interval is greater than the preset threshold, execute LBT and then send the uplink data.

15. The device according to claim 11 or 12, characterized in that When time division duplex TDD is adopted and the first carrier is in the authorized 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, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.

16. An uplink transmission device, characterized in that: The device comprises: A sending module, used to send first scheduling information to a terminal device on a first carrier; The sending module is further used to send second scheduling information to the terminal device on a second carrier; wherein the first scheduling information and the second scheduling information are subsets of scheduling indication information, the scheduling indication information is used to indicate information required for the terminal device to send uplink data, at least one of the first carrier and the second carrier is on an unlicensed spectrum, the first scheduling information is a part of the indication information in the scheduling indication information, the second scheduling information is another part of the indication information in the scheduling indication information, and the time indication information in the first scheduling information and the time indication information in the second scheduling information are used to jointly determine an uplink transmission time; A receiving module is used to receive the uplink data sent by the terminal device on the second carrier.

17. The device according to claim 16, characterized in that When the second carrier is on an unlicensed spectrum, the transmission time of the uplink data is within the channel occupancy time COT acquired by the network device through the listen-before-send LBT method.

18. The device according to claim 16 or 17, characterized in that The sending module is also used to send the first scheduling information to the terminal device after performing LBT on the first carrier when the first carrier is on an unlicensed spectrum.

19. The device according to claim 16 or 17, characterized in that The sending module is also used to send the second scheduling information to the terminal device after performing LBT on the second carrier when the second carrier is on an unlicensed spectrum.

20. The device according to claim 16 or 17, characterized in that When time division duplex TDD is adopted and the first carrier is in the authorized 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, wherein the time domain position of the first uplink time unit corresponds to the time domain position of the second uplink time unit.

21. A communication device, characterized in that: including a processor and a memory; The memory is used to store computer-executable instructions; The processor is configured to execute the computer-executable instructions stored in the memory, so that the communication device executes the method according to any one of claims 1 to 5.

22. A communication device, characterized in that: including a processor and an interface circuit; The interface circuit is used 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 1-5.

23. A communication device, characterized in that: including a processor and a memory; The memory is used to store computer-executable instructions; The processor is configured to execute the computer-executable instructions stored in the memory, so that the communication device executes the method according to any one of claims 6 to 10.

24. A communication device, characterized in that: including a processor and an interface circuit; The interface circuit is used 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 6-10.

25. A computer-readable storage medium, characterized in that: Used to store instructions, when the instructions are executed, the method according to any one of claims 1 to 5 is implemented.

26. A computer-readable storage medium, characterized in that: Used to store instructions, when the instructions are executed, the method according to any one of claims 6 to 10 is implemented.

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