Data transmission method, terminal device, and network device

Abstract

The present application relates to a data transmission method, a terminal device, and a network device. The data transmission method includes the steps of: a terminal device obtaining first indication information, the first indication information being used to determine information on time domain resources corresponding to a first physical channel, the time domain resources of the first physical channel corresponding to a first link direction, the time domain resources including time domain resources over N time units, where N is an integer greater than 1; and a terminal device transmitting the first physical channel using the time domain resources over the N time units. Using the embodiments of the present application can make the resource scheduling method more flexible.

Description

Technical Field

[0001] This application relates to the field of communications, and in particular, to a data transmission method, a terminal device, and a network device.

Background Art

[0002] In the fifth-generation mobile communication 5G new air interface NR system, the network schedules the transmission of physical channels according to scheduling information. For example, the network can schedule the transmission of the physical downlink shared channel (PDSCH) of a single time slot via downlink control information (DCI), and can also schedule the PDSCH transmission of multiple time slots via DCI. The network can configure DCI to schedule multiple PDSCH transmission resources by setting specific parameters. If the network does not configure such parameters, one DCI only schedules the PDSCH in one time slot. When the parameters are configured and have a value greater than 1, one DCI schedules the PDSCH in multiple time slots.

[0003] In multi-slot scheduling or multi-slot transmission, the same transmission block is retransmitted multiple times in multiple time slots. On the one hand, this can improve transmission reliability and reduce the overhead of scheduling signals. On the other hand, in multi-slot transmission, since the PDSCHs in different time slots transmit the same transmission block, the same time-frequency resources are used for transmission in each time slot. Therefore, the position and quantity of downlink time slot symbols in each time slot need to meet the requirements for transmitting the PDSCH. Otherwise, the time slot cannot be used for transmitting the PDSCH. In fact, this method of transmitting the PDSCH in multiple time slots imposes strict requirements and constraints on the time slot structure and fails to meet the requirements of the application.

Summary of the Invention

Problems to be Solved by the Invention

[0004] From such a perspective, in an embodiment of the present application, a data transmission method, a terminal device, and a network device that can support a flexible resource scheduling method are provided.

Means for Solving the Problems

[0005] In one embodiment of the present application, a data transmission method applied to a terminal device is provided, including the following steps. The terminal device acquires first indication information. The first indication information is used to determine information on time domain resources corresponding to a first physical channel. The time domain resources of the first physical channel correspond to a first link direction, and the time domain resources include time domain resources on N time units, where N is an integer greater than 1. The terminal device transmits the first physical channel via the time domain resources on N time units.

[0006] In one embodiment of the present application, a data transmission method is provided, including the following steps. A first communication device transmits the first indication information to the terminal device. The first indication information is used to determine information on time domain resources corresponding to a first physical channel. The time domain resources of the first physical channel correspond to a first link direction, and the time domain resources include time domain resources on N time units, where N is an integer greater than 1, and the time domain resources on N time units are used by the terminal device to transmit the first physical channel.

[0007] In one embodiment of the present application, a terminal device is further provided, including the following. The first acquisition module is configured to acquire first indication information. The first indication information is used to determine information on a time domain resource corresponding to a first physical channel. The time domain resource of the first physical channel corresponds to a first link direction, and the time domain resource includes a time domain resource on N time units, where N is an integer greater than 1. The transmission module is configured to transmit the first physical channel via the time domain resource on N time units.

[0008] In one embodiment of the present application, a communication device is further provided and includes the following. The first transmission module is configured to transmit first indication information to a terminal device. The first indication information is used to determine information on a time domain resource corresponding to a first physical channel. The time domain resource of the first physical channel corresponds to a first link direction, and the time domain resource includes a time domain resource on N time units, where N is an integer greater than 1. The time domain resource on N time units is used by the terminal device to transmit the first physical channel.

[0009] Optionally, the communication device includes a network device or a central control node.

[0010] In one embodiment of the present application, a terminal device is further provided and includes a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory and execute steps of a data transmission method.

[0011] In one embodiment of the present application, a network device is further provided and includes a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory and execute steps of a data transmission method.

[0012] In one embodiment of the present application, a chip is further provided, including a processor configured to call and execute a computer program from a memory, and a device installed with the chip can execute a data transmission method.

[0013] In one embodiment of the present application, a computer-readable storage medium for storing a computer program is further provided. The computer program can cause a computer to execute a data transmission method.

[0014] In one embodiment of the present application, a computer program product is further provided, including computer program instructions. The computer program instructions can cause a computer to execute a data transmission method.

[0015] In one embodiment of the present application, a computer program is provided. The computer program can cause a computer to execute a data transmission method.

Advantages of the Invention

[0016] Data transmission is performed by the method in the embodiment of the present application, and the time domain symbols of time units such as time slots are not strictly regulated or restricted. The data channels do not need to have the same time domain position in each time unit. By adopting the embodiment of the present application, the resource scheduling method can be made more flexible, and the mapping of data channels to resources can be made more flexible.

Brief Description of the Drawings

[0017]

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Embodiments for Carrying Out the Invention

[0018] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0019] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as Global System of Mobile Communication (GSM) (registered trademark) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) (registered trademark) system, General Packet Radio Service (GPRS) system, Long Term evolution (LTE) (registered trademark) system, Advanced Long Term evolution (LTE-A) system, New Radio (NR) system, an evolved system of the NR system, LTE-based access (LTE-U) system on unlicensed spectrum, NR-based access (NR-U) system on unlicensed spectrum, non-terrestrial network (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Network (WLAN), Wireless Fidelity (WiFi), fifth-generation (5G) communication system, or other communication systems, etc.

[0020] Generally, conventional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technologies, mobile communication systems may support not only conventional communication but also communication such as device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine type communication (MTC), vehicle-to-vehicle (V2V) communication, vehicle-to-everything (V2X) communication, communication between in-vehicle devices, smart home scenarios, or smart city communication. Embodiments of the present application can also be applied to these communication systems.

[0021] Optionally, the communication system in the embodiments of the present application can also be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, and stand-alone (SA) meshing scenarios.

[0022] In the embodiments of the present application, various embodiments with reference to a network device and a terminal device, and a central control node and a terminal device are illustrated. The terminal device may also be referred to as a user equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobileable station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device, etc.

[0023] The terminal device can be a station (ST) in a WLAN, a mobile phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, an end device in a next-generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (PLMN) network.

[0024] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, in a handheld, wearable, or vehicle-mounted mode, can also be deployed on water (e.g., ships, etc.), and can also be deployed in the air (e.g., airplanes, balloons, artificial satellites, etc.).

[0025] In an embodiment of the present application, the terminal device may be a mobile phone, a pad, a computer with a wireless transceiver, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an industrial control wireless terminal device, an autonomous driving wireless terminal device, a telemedicine wireless terminal device, a smart grid wireless terminal device, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0026] As an example but not limited thereto, in an embodiment of the present application, the terminal device may be a wearable device. A wearable device is also called a wearable smart device and can also be a general term for the development of wearable devices using intelligent design for daily wear and wearable technologies such as glasses, gloves, watches, clothes, shoes, etc. A wearable device is a portable device directly worn on the user's body or incorporated into clothes or accessories. A wearable device is not only a hardware device but also one that implements powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include complete functions and large sizes. Wearable smart devices can realize complete functions or some functions without relying on smartphones such as smartwatches and smart glasses. Furthermore, wearable smart devices focus only on certain application functions and need to be used in combination with other devices such as various types of smart bracelets and smart jewelry other than smartphones for body monitoring.

[0027] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in a WLAN, a base transceiver station (BTS) in GSM or CDMA, may be a Node B (NB) in WCDMA, an evolved Node B (eNB or eNodeB) in LTE, or a relay station, an access point, an in-vehicle device, a wearable device, a network device (gNB) in an NR network, or a network device in a future evolved PLMN network.

[0028] By way of example and not limitation, in an embodiment of the present application, the network device may have mobility characteristics. For example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low Earth orbit (LEO) satellite, a medium Earth orbit (MEO) satellite, a geostationary Earth orbit (GEO) satellite, a highly elliptical orbit (HEO) satellite, etc. Optionally, the network device may be a base station located in a place such as on land or on water.

[0029] In an embodiment of the present application, the network device may provide services for a cell. The terminal device communicates with the network device via transmission resources (e.g., frequency domain resources or spectrum resources) used by the cell. The cell may be a cell corresponding to the network device (e.g., a base station), may belong to a macro base station, or may belong to a base station corresponding to a small cell. Small cells may include metro cells, micro cells, pico cells, femto cells, etc. These small cells are characterized by small coverage and low transmission power and are suitable for providing high-speed data transmission services.

[0030] FIG. 1 schematically shows network devices 1100 and two terminal devices 1200. Optionally, the wireless communication system 1000 may include a plurality of network devices 1100, and the coverage of each network device 1100 may include other numbers of terminal devices, which is not limited to the embodiments of the present application. Optionally, the wireless communication system 1000 shown in FIG. 1 may further include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), which is not limited by the embodiments of the present application.

[0031] FIG. 2 is a schematic diagram for explaining sidelink transmission performed by a transmitter terminal and a receiver terminal in an NR-V2X system. In unicast or multicast of the NR-V2X system, in transmission mode 1, the sidelink transmission resources are allocated by a network device. The network device allocates resources for sidelink data transmission to the transmitter terminal and transmission resources for reporting sidelink feedback information such as physical uplink control channel (PUCCH) transmission resources. The transmitter transmits sidelink data to the receiver on the sidelink transmission resources allocated by the network device, which may include a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH). The receiver transmits sidelink feedback information of the sidelink data to the transmitter terminal, and the sidelink feedback resources may be allocated by the network or determined according to the transmission resources of the sidelink data. The transmitter terminal receives the sidelink feedback information and transmits the sidelink feedback information to the network on the uplink resources allocated by the network.

[0032] In the case of a central control node or a cluster head (CH) terminal within a communication group, sidelink transmission resources can be allocated to other terminals within the group. Specifically, the central control node has one of the functions such as establishment of a communication group, joining and leaving of group members, execution of resource adjustment, allocation of sidelink transmission resources to other terminals, reception of sidelink feedback information from other terminals, and resource adjustment with other communication groups. When a sender terminal transmits a resource request to a cluster head (CH) terminal, the cluster head (CH) terminal allocates sidelink transmission resources to the sender terminal, and the sender terminal transmits sidelink data to the receiver terminal using the allocated resources. When sidelink feedback is activated, the receiver terminal can transmit sidelink feedback information according to the detection state of the sidelink data.

[0033] Embodiments of the present application can be applied to sidelink transmission scenarios or systems as follows. 1. Vehicle Internet System In a vehicle Internet system, the network can allocate sidelink transmission resources to terminal devices, and the network can allocate transmission resources of a plurality of time slots to the terminals, that is, schedule the terminals to transmit sidelink data in a plurality of consecutive time slots (or subframes). 2. Home or Indoor Scenario In a smart home scenario, terminals in the home or indoors have communication functions. A communication group can be formed from terminals in the home, and the communication group usually has a central control node or a cluster head (CH) terminal such as a smartphone, a smart TV, and a customer premise equipment (CPE). Since terminals in the same home form a communication group and the central control node (or cluster head (CH) terminal) can allocate transmission resources to other terminals, the central control node can allocate transmission resources of a plurality of time slots to other terminals. 3. In-Vehicle Communication Scenario Various terminal devices such as speakers, stereos, cameras, rearview mirrors, etc. are included in the vehicle. These terminal devices can be controlled via a central control node within the vehicle. The terminals within the vehicle constitute a communication group or communication system, and since the central control node can allocate transmission resources to other terminals within the vehicle, it can allocate transmission resources for a plurality of time slots.

[0034] It should be understood that in this specification, the terms "system" and "network" are often used interchangeably. The term "and / or" in this specification is only for describing the relevant relationship for related objects, indicating that three types of relationships can exist. For example, the statement that it exists in A and / or B may mean three situations. That is, A exists alone, both A and B exist, or B exists alone. Furthermore, the symbol " / " in this specification generally means an "or" relationship between the preceding object and the subsequent object connected by that symbol.

[0035] To clearly explain the concept of the embodiments of this application, first, a brief description of the resource scheduling processing process in the communication system is shown.

[0036] In the NR system, in the case of multi-slot transmission or multi-slot scheduling, the network can configure the number of repeated data transmissions by configuring the parameter pdsch-AggregationFactor. When the network configures the parameter pdsch-AggregationFactor, the network transmits a plurality of PDSCHs in a plurality of consecutive time slots, the plurality of PDSCHs transmit the same transmission block (TB), the plurality of PDSCHs have the same or different redundancy versions, and it is the repeated transmission of the transmission block.

[0037] Figure 3 A and Figure 3BIt is a diagram for explaining the comparison of time slot structures corresponding to two configuration parameters when the time slot structure requirements are met. Figure 3 A In This figure it shows that when pdsch-AggregationFactor is not configured, only one PDSCH is scheduled for the physical downlink control channel (PDCCH).

[0038] Figure 3 B It shows that when pdsch-AggregationFactor = 4 is configured, one PDCCH schedules PDSCH in four consecutive time slots, and the PDSCHs in these four consecutive time slots occupy the same resource symbols. Specifically, in Figure 3 B the start time domain symbol position of the time domain resource allocated to the PDSCH is the fourth symbol, the PDSCH occupies four time domain symbols, the time domain symbols occupied by the PDSCH in one time slot are 3, 4, 5, and 6, and in four consecutive time slots, the PDSCH occupies the same time domain resource.

[0039] Figure 4 is a diagram for explaining the comparison of time slot structures corresponding to two configuration parameters when the time slot structure requirements are not met. In time slot n, time slot n + 1, and time slot n + 3, four time domain symbols (3, 4, 5, 6) are in the downlink direction, meeting the requirements and belonging to the available time domain symbols. However, in slot n + 2, time domain symbol 6 is configured in the uplink direction, not meeting the requirements and belonging to the unavailable time domain symbols, so time slot n + 2 cannot be used for PDSCH transmission. That is, all time domain symbols in time slot n + 2 are unavailable. Even if symbols 3 and 4 are in the downlink direction, they are unavailable. In fact, there is a certain amount of resource waste.

[0040] In view of this point, in one embodiment of the present application, a data transmission method applied to a terminal device is provided. Referring to FIG. 5, this method includes the following steps. In step S101, the terminal device acquires first indication information, and the first indication information is used to determine the time domain resource information of the first physical channel. The time domain resource of the first physical channel corresponds to the first link direction, and the time domain resource includes time domain resources on N time units, where N is an integer greater than 1. In step S102, the terminal device uses the time domain resources on N time units to transmit the first physical channel.

[0041] In an embodiment of the present application, the time domain resource corresponding to the first physical channel is indicated by the first indication information, and the link direction of the indicated time domain resource is a specific link direction such as uplink, downlink, or sidelink. The indicated time domain resource includes time domain resources on N time units. During transmission, the terminal device transmits the first physical channel via the time domain resources on N time units indicated by the first indication information, and the first physical channel may be, for example, an uplink channel, a downlink channel, or a side channel.

[0042] It should be noted that the uplink, downlink, or sidelink in the embodiment is only used to identify or distinguish the transmission direction of the link. For example, the uplink is used to identify the direction in which the terminal transmits data to the network or the direction in which the terminal transmits data to the central control node device, the downlink is used to identify the direction in which the network transmits data to the terminal or the direction in which the central control node device transmits data to the terminal, and the sidelink is used to identify the direction in which data is transmitted between two terminals.

[0043] Therefore, in the method of the embodiment of the present application for data transmission, the factors affecting transmission are only the link direction of time-domain resources and the total number of time-domain resources, that is, only N time units. Since the situation of time-domain symbols and the like in a time unit is not subject to regulations or restrictions, the embodiment of the present application does not limit the frame structure of the system. The data channel does not need to have the same time-domain position in each time unit, nor does it need to have the same number of time-domain symbols for a specific link direction. According to the embodiment of the present application, the resource scheduling method can be made more flexible, and the mapping of the data channel to resources can be made more flexible.

[0044] In the embodiment of the present application, optionally, the time-domain resources on a plurality of time units (that is, N time units) indicated by the indication information are used to jointly transmit one data channel, rather than being used to separately transmit a plurality of data channels (for example, repeatedly transmitting the first physical channel in different time slots).

[0045] Correspondingly, in an embodiment of the present application, a data transmission method applied to a network device or a central control node device is further provided. Referring to FIG. 6, this method includes the following steps. In step S201, the first communication device transmits first indication information to the terminal device, and the first indication information is used to determine the information of the time-domain resources corresponding to the first physical channel. First The time-domain resources of one physical channel correspond to the first link direction. The time-domain resources include the time-domain resources on N time units, and N is an integer greater than 1. The time-domain resources on N time units are used by the terminal device to transmit the first physical channel.

[0046] Optionally, the first communication device may be a device having a resource scheduling function, such as a network device, or a cluster head (CH) terminal or a central control node in a communication group.

[0047] In an embodiment of the present application, a network device or a central control node may provide first instruction information to a terminal device, and the terminal device can be enabled to transmit a data channel according to the first instruction information. The data channel does not necessarily have the same time domain position in each time unit, and the resource scheduling method can be made more flexible according to the embodiment of the present application.

[0048] The specific implementation of the embodiment of the present application will be described in detail in the following paragraphs through several embodiments.

[0049] In an embodiment of the present application, various manners can be adopted to determine the number N of time units, which will be introduced individually in the subsequent paragraphs. The term "number" mentioned herein means the "number / quantity" of the described object, and the two are interchangeable.

[0050] In Mode 1, the first instruction information determines the number of time units.

[0051] In an embodiment of the present application, optionally, the first instruction information includes that the number of time units corresponding to the first physical channel is N.

[0052] Optionally, the time unit includes at least one of a time slot, a subframe, a half frame, a radio frame, a system frame, and a time length T. The time length T refers to a fixed time length such as 1 millisecond or 2 milliseconds. It should be noted that the time unit may be a basic unit of resource scheduling.

[0053] In different communication systems, it should be noted that the basic unit of resource scheduling has different names. For example, in the LTE system, it is called a subframe, in the NR system, it is called a time slot, and in the in-vehicle short-range communication system, it is called a radio frame or the like. In each embodiment of the present application, it is applied to the basic unit of resource scheduling, and there is no distinction due to different names. For the convenience of explanation, in different embodiments, it may be described by a time slot, a subframe, or a radio frame, but it does not affect the specific implementation of the embodiments of the present application.

[0054] In an embodiment of the present application, the first indication information may be carried by at least one of broadcast information, system information, configuration information, and scheduling information.

[0055] In one example, the network device schedules the PDSCH (or PUSCH) via the downlink control information (DCI), and the first indication information may be carried by the DCI. In another example, the first indication information may be carried by the system information broadcast (SIB), radio resource control (RRC), physical broadcast channel (PBCH) configured via the configuration information.

[0056] Specifically, in an example where the scheduling information carries the first indication information, the network device or the central control node transmits the scheduling information to the terminal device. The scheduling information is used to schedule the transmission of the first data channel, and the scheduling information carries the first indication information. The first indication information is used to schedule the transmission resources on N time units of the terminal device. The resources on the N time units are used to transmit the first data channel.

[0057] In Mode 2, the first indication information and the first configuration information jointly determine the number of time units.

[0058] In an embodiment of the present application, optionally, the terminal device determines a first parameter set according to first configuration information, the first parameter set includes one or more parameter values, the first indication information includes first index information, and the terminal device determines the number of time units corresponding to the first physical channel according to the first parameter set and the first index information.

[0059] Optionally, the first configuration information is determined according to at least one of pre-configuration information, network configuration information, and central control node configuration information.

[0060] When the number of time units is jointly determined, on the one hand, the parameter set can be configured via pre-configuration, network configuration, or a central control node, and multiple parameter values in the parameter set respectively correspond to multiple scheduled numbers of time units (for example, the number of time slots). On the other hand, the index value may be indicated by DCI, and the number of time units to be scheduled is determined according to the index value and the parameter set. To do For example, the network device configures the parameter set via signaling such as RRC or SIB, and the parameter values in the set are 1, 2, 4, 8, 16, 32, etc. The index value indicated by DCI is 2, the index number starts from 0, and the number of time units to be scheduled is the value corresponding to the index value 2 of the parameter set, that is, 4 of the corresponding parameter set. Therefore, the number of time units to be scheduled is determined to be 4, that is, N = 4.

[0061] The case of indicating other parameter sets or index values can be analogized, and the arbitrary definition of the transport mode and time unit of the first indication information is consistent with the description of "Aspect 1".

[0062] In Aspect 3, the first indication information and the second configuration information jointly determine the number of time units.

[0063] In Aspect 3, the first indication information and the second configuration information jointly determine the number of time units.

[0064] In an embodiment of the present application, optionally, the terminal device determines the minimum granularity information of the time unit according to the second configuration information, the first indication information includes a first number, and the terminal device determines the number of time units corresponding to the first physical channel according to the minimum granularity information and the first number.

[0065] Optionally, the second configuration information is determined according to at least one of pre-configuration information, network configuration information, and central control node configuration information.

[0066] When the number of time units is jointly determined, on the one hand, the minimum granularity of the time unit is scheduled by pre-configuration, network configuration, or central control node configuration. For example, the minimum granularity can be a 4-hour slot (or a radio frame, etc.), an 8-hour slot, etc. On the other hand, the indication information in the control information indicates a multiple of the minimum granularity of the time unit, and the number of time units to be scheduled is determined according to the multiple value and the minimum granularity parameter value.

[0067] For example, the minimum granularity of the scheduling time slot configured by the network via RRC signaling is 2, the multiple value indicated by DCI is 4, and it is indicated that the number of time slots corresponding to 4 minimum scheduling time units is 2×4 = 8 time slots. Therefore, the number of time units to be scheduled is determined to be 8, that is, N = 8.

[0068] The same reasoning can be applied when indicating the remaining minimum granularity or multiple, and the transport mode of the first indication information and the arbitrary definition of the time unit are consistent with the description of "Aspect 1".

[0069] In Aspect 4, the first indication information and the third configuration information jointly determine the number of time units.

[0070] In an embodiment of the present application, optionally, the terminal device determines the number of time domain symbols in the first link direction included in each time unit according to third configuration information, and the first indication information includes that the number of time domain symbols used to transmit the first physical channel is K. The terminal device determines the number of time units corresponding to the first physical channel according to the first indication information and the number of time domain symbols in the first link direction included in each time unit.

[0071] Optionally, the third configuration information is determined according to at least one of pre-configuration information, network configuration information, and central control node configuration information.

[0072] When the number of time units is jointly determined, on the one hand, the number of time domain symbols in the first link direction included in each time unit may be configured by pre-configuration, network configuration, or the central control node, and for example, it is configured as follows. Four downlink symbols are included in time slot n+1, Zero downlink symbols are included in time slot n+2, One downlink symbol is included in time slot n+3, Two downlink symbols are included in time slot n+4.

[0073] On the other hand, the indication information in the control information indicates that the number of downlink symbols used for PDSCH transmission is K, and according to the above value, the number of time units to be scheduled can be determined.

[0074] For example, assuming that K=7 is indicated in the DCI, that is, the PDSCH is mapped to a total of 7 time domain symbols, starting from time slot n+1, the available downlink symbols involve a total of 3 time slots (time slots n+1, n+3, n+4) and are occupied, so N=3, and the number of time units to be scheduled is determined to be 3.

[0075] Assume that K = 5 is indicated in the DCI, that is, it is indicated that the PDSCH is mapped to 5 symbols. Then, a total of 2 time slots (slot n+1 and n+3) are involved, and the PDSCH is mapped only to time slots n+1 and n+3, that is, N = 2, and the number of time units to be scheduled is determined to be 2.

[0076] Assume that K = 6 is indicated in the DCI, that is, it is assumed that the PDSCH is mapped to a total of 6 time domain symbols. Starting from the above time slot n+1, the available downlink symbols involve a total of 3 time slots (time slots n+1, n+3, n+4) and are fully occupied. Since only the first downlink symbol of time slot n+4 is used, N = 3, and the number of time units to be scheduled is determined to be 3.

[0077] The determination modes in the remaining cases can be analogized, and the arbitrary definitions of the transport mode and time unit of the first indication information are consistent with the description of "Mode 1".

[0078] In Mode 5, the first indication information and the fourth configuration information jointly determine the number of time units.

[0079] In the embodiments of the present application, optionally, the terminal device determines the number A of time domain symbols used to transmit the first physical channel in a single time unit according to the fourth configuration information. Further, the terminal device determines that the number of time domain symbols of the first physical channel is B according to the fifth configuration information, and determines the type of the first physical channel according to the first indication information. The terminal device determines the number of time units corresponding to the first physical channel according to the first indication information, the fourth configuration information, and the fifth configuration information.

[0080] Optionally, the terminal device determines the start position of A time domain symbols according to the fourth configuration information.

[0081] Optionally, the fourth configuration information is determined according to at least one piece of information among the pre-configuration information, network configuration information, and central control node configuration information, and the fifth configuration information is determined according to at least one piece of information among the pre-configuration information, network configuration information, and central control node configuration information.

[0082] Optionally, the fourth configuration information and the fifth configuration information are the same configuration information.

[0083] Optionally, the first indication information may be carried by at least one piece of information among broadcast information, system information, configuration information, and scheduling information.

[0084] For example, the first indication information is used to instruct the terminal to transmit a control channel, the fourth configuration information is used to determine that there is one time domain symbol in a time unit for transmitting the control channel, and the fifth configuration information is used to determine that the number of time domain symbols of the control channel is 4. Thus, the terminal can determine that the number of time units corresponding to the channel is N = 4.

[0085] In any one of the foregoing embodiments, N time units for transmitting the first physical channel may be determined. Further, the start time slot of the first physical channel may be the first time domain position or a position at a certain interval from the first time domain position. In the embodiments of the present application, the start position of the time domain resource corresponding to the first physical channel may be determined by the second indication information, and the details will be described in the paragraphs below.

[0086] In the embodiments of the present application, the terminal device acquires the second indication information, and the second indication information is used to determine the start position of the time domain resource corresponding to the first physical channel.

[0087] Optionally, the second indication information is carried by at least one of broadcast information, system information, configuration information, and scheduling information.

[0088] In the implementation of this application, optionally, the second indication information includes the index of the start time slot and / or the index of the start symbol of the first physical channel.

[0089] In one embodiment of this application, optionally, the second indication information includes the time slot interval and / or the symbol interval between the start position of the first physical channel and the first time domain position.

[0090] In one embodiment of this application, optionally, the second indication information includes the time slot interval and / or the symbol index between the start position of the first physical channel and the first time domain position.

[0091] The first time domain position includes at least one of the following. a) The time domain position where the scheduling information of the first physical channel is arranged; b) The time domain position where the channel carrying the first indication information is arranged; c) The time domain position where the channel carrying the second indication information is arranged; d) A start position with a fixed time length, such as the start position of a 1-millisecond time length.

[0092] Therefore, in the embodiments of this application, the time domain resource on N time units includes the time domain resource on N time units starting from the start position. The N time units may be consecutive N time units or discrete N time units.

[0093] In practice, different time slots may include different numbers of uplink symbols and / or downlink symbols, and may also include a guard period or time-domain symbols useful for transmission / reception conversion, etc. Therefore, for the time-domain resources of N time units starting from the start position described in the embodiments of the present application, it is necessary to exclude the time units that cannot be used for the transmission of the first physical channel, but in the embodiments of the present application, it can be implemented in the following manner.

[0094] In Mode 1, if the link direction of all the time-domain symbols in the first time unit among the N time units starting from the start position is not the first link direction, the first time unit is not included in the N time units.

[0095] In Mode 2, if the second time unit among the N time units starting from the start position includes a reserved symbol and the link direction of all the remaining time-domain symbols excluding the reserved symbol is not the first link direction, the second time unit is not included in the N time units.

[0096] In some embodiments of the present application, each of the N time units includes at least one time-domain symbol in the first link direction.

[0097] In some embodiments of the present application, the time-domain symbols excluding the reserved symbols in each of the N time units include at least one time-domain symbol in the first link direction.

[0098] In some embodiments of the present application, at least one of the N time units does not include a time-domain symbol in the first link direction.

[0099] In some embodiments of the present application, the time-domain symbols excluding the reserved symbols in at least one of the N time units do not include a time-domain symbol in the first link direction.

[0100] Regarding the reservation symbol, in the embodiment of the present application, the terminal device may determine the time domain resource of the reservation symbol according to the sixth configuration information. The sixth configuration information may be determined according to at least one of pre-configuration information, network configuration information, and central control node configuration information.

[0101] In the embodiment of the present application, the reservation symbol is used to transmit at least one of synchronization signal, broadcast channel, system information, control information, access information, channel sounding signal, and information of a specific service type. Specific types of information include, for example, information for reducing noise.

[0102] In addition to the various time unit structures described, the N time units starting from the start position in the embodiment of the present application may be N discontinuous time units, and there is an interval between two adjacent time units.

[0103] In the embodiment of the present application, the terminal device obtains third indication information, and the third indication information is used to determine that one time unit is used for the transmission of the first physical channel every R time units, where R is an integer greater than 1.

[0104] The time domain resource on the N time units includes the time domain resource on the N time units starting from the start position, and the interval between the i-th time unit and the i + 1-th time unit in the N time units is R time units, where i is the serial number of the time unit and 1 ≤ i ≤ N - 1.

[0105] In the embodiment of the present application, the third indication information may be carried by at least one of broadcast information, system information, configuration information, and scheduling information.

[0106] Based on one or more of the described embodiments, the terminal device in the embodiment of the present application may selectively transmit the data channel in at least one of the following manners. · The first physical channel is transmitted through all time-domain symbols in the first link direction within N time units. · The first physical channel is transmitted through all time-domain symbols in the first link direction within N time units, excluding reservation symbols. · The first physical channel is transmitted through all time-domain symbols in the first link direction within N time units, excluding reservation symbols. · The first physical channel is transmitted through all time-domain symbols in the first link direction within N time units, excluding reservation symbols. · The first physical channel is transmitted through all time-domain symbols in the first link direction within N time units. · The first physical channel is transmitted through K time-domain symbols in the first link direction within N time units. · The first physical channel is transmitted through A time-domain symbols in the first link direction at each of N time units. · The first physical channel is transmitted through A time-domain symbols in the first link direction at each of N time units.

[0107] In an embodiment of the present application, referring to FIG. 7, the first physical channel may be transmitted by several time-domain symbols within one time unit. Compared with the existing processing method in FIG. 4, there are not enough downlink symbols in time slot n + 2 of FIG. 4, and this time slot is not used for transmitting the physical channel. However, in the embodiment of the present application shown in FIG. 7, two downlink time-domain symbols at the corresponding position of time slot n + 2 and the downlink time-domain symbols of other time slots may be used jointly for transmitting the physical channel.

[0108] In an embodiment of the present application, the terminal device determines time-domain symbols in the first link direction for transmitting the first physical channel within N time units according to at least one of the fourth indication information, the fifth indication information, and the sixth configuration information.

[0109] The fourth indication information is used to determine the start position and the number of time-domain symbols in the first link direction within one time unit for transmitting the first physical channel.

[0110] The fifth indication information is used to determine the time-domain position of the time-domain symbols in the first link direction within a time unit.

[0111] The sixth configuration information is used to determine the time domain resources of the reserved symbol.

[0112] In an embodiment of the present application, the fourth indication information may be carried in DCI and indicates the start position in the radio frame and the number of time domain symbols. In the example of FIG. 7, the fourth indication information indicates that four symbols starting from the fourth time domain symbol in each time unit are used for the transmission of the first physical channel.

[0113] In an embodiment of the present application, the fifth indication information is symbol allocation information in the radio frame and indicates the number and / or position of symbols in the first link direction and the second link direction in the radio frame. In the example of FIG. 7, according to the symbol allocation information, the position and number of downlink symbols DL and the position and number of uplink symbols UL in each time slot are determined.

[0114] In an embodiment of the present application, the time domain symbols in the first link direction used to transmit the first physical channel in N time units are determined according to the fourth indication information and the fifth indication information. As an example, the intersection of the time domain symbols in the first link direction determined by the two indication information may be taken, and the first physical channel is transmitted by the time domain symbols at the intersection. For example, in FIG. 7, the fourth indication information indicates that four symbols starting from the fourth time domain symbol in each time slot are used for transmitting the first physical channel. The fifth indication information is used to indicate the symbol ratio in each time slot, and the intersection determined according to the fourth indication information and the fifth indication information, that is, the symbols with symbol indices 3, 4, 5, and 6 (symbol indices within the slot starting from 0) in time slots n, n + 1, and n + 3 and the symbols with symbol indices 3 and 4 in slot n + 2 are used for transmitting the first physical channel.

[0115] In an embodiment of the present application, based on the fourth instruction information and the fifth instruction information, the sixth configuration information is further combined to determine the time domain symbols in the first link direction in N time units for transmitting the first physical channel. As an example, at the aforementioned intersection of the time domain symbols in the first link direction determined by the fourth instruction information and the fifth instruction information, excluding the reserved resources determined by the sixth configuration information, the first physical channel is transmitted using the remaining time domain symbols. In the example of FIG. 7, based on the example in the previous paragraph, when the network configures the last two downlink symbols available in the time slot as reserved symbols via the sixth configuration information, the first physical channel cannot be transmitted using those symbols. On the other hand, the symbols with symbol indices 3, 4, and 5 in time slots n, n + 1, and n + 3 can be used for transmitting the first physical channel, the symbol with symbol index 6 is a reserved symbol, and the symbols with symbol indices 3 and 4 in time slot n + 2 are reserved symbols and cannot be used for transmitting the first physical channel. On the other hand, the first physical channel is transmitted via the symbols with symbol indices 3, 4, and 5 in time slots n, n + 1, and n + 3.

[0116] According to at least one implementation described, in an embodiment of the present application, the terminal device transmits the first physical channel via the time domain symbols in the first link direction in N time units for transmitting the first physical channel.

[0117] Optionally, the fourth instruction information and the fifth instruction information may each be carried by at least one of broadcast information, system information, configuration information, and scheduling information. For example, the fourth instruction information is resource scheduling information carried on a control channel, and the fifth instruction information is broadcast information.

[0118] In the embodiments of the present application, the time slot ratios of each time slot in the time domain resources may be the same or different, that is, the transmission of the data channel can be implemented without strictly restricting the time slot structure.

[0119] The implementation of the embodiments of the present application will be described by a plurality of specific examples in the following paragraphs with reference to the accompanying drawings.

[0120] (Embodiment 1) Referring to FIG. 8, in this embodiment, the time slot ratios of each time slot are the same. Each time slot (or radio frame) includes 10 time domain symbols, 2 time domain symbols are used as guard periods or transmission / reception conversions, and the remaining 8 symbols can be used for data transmission. Among the 8 symbols for data transmission, 4 are used to transmit downlink data such as transmission from the base station to the terminal device or transmission from the central control node device to other terminal devices, and the remaining 4 symbols are used to transmit uplink data such as transmission from the terminal device to the base station or the central control node.

[0121] In the embodiment, the scheduling information transmitted in time slot n+0, such as the indication information carried by DCI, is used to indicate the scheduling of transmission resources such as PDSCH.

[0122] Specifically, FIG. 8 A shows the case of scheduling according to the time slot granularity, and the number of time units corresponding to the PDSCH indicated by DCI is N = 4. That is, the PDSCH scheduled by DCI occupies all the downlink symbols within 4 time slots. The 4 time slots (time slots n+1, n+2, n+3, n+4) in FIG. 8 A include a total of 16 downlink symbols, and the PDSCH occupies the resources in the same frequency domain on 16 time domain symbols.

[0123] FIG. 8 Bshows the case of scheduling according to the granularity of time-domain symbols, where N = 14 is indicated in the DCI. That is, the PDSCH scheduled by the DCI occupies 14 consecutive downlink symbols including 4 time slots (time slots n+1, n+2, n+3, n+4), the first 2 downlink symbols of time slot n+4 are occupied, and the last 2 downlink symbols are not occupied. If N = 16 is indicated, all downlink symbols may be occupied.

[0124] Furthermore, in FIG. 8 A In the example of, the network schedules the PDSCH via the DCI, and N = 4 is indicated in the DCI. That is, the time-domain resources of 4 consecutive time slots are scheduled for transmitting the PDSCH, the size of the frequency-domain resources is indicated as 10 RBs. Next, the transmission block TB corresponding to the PDSCH after channel coding and modulation is mapped to the time-frequency resources in the order of the frequency domain first and then the time domain. That is, the transmission block TB is first mapped to 10 RBs of the first downlink symbol of time slot n+1, and then mapped to 10 RBs of the second downlink symbol of slot n+1, and so on until the 4 downlink symbols of time slot n+1 are mapped. Subsequently, the transmission block TB is mapped to the first symbol of time slot n+2, and then mapped to the second symbol of time slot n+2, and so on until all downlink symbols of the 4 time slots are mapped.

[0125] Optionally, the control information DCI carries second indication information, and the second indication information is used to determine the start position of the time-domain resources of the data channel scheduled by the control information.

[0126] Optionally, the second indication information can indicate the index of the start time slot of the data channel and / or the index of the start time region symbol.

[0127] Optionally, the second indication information can indicate the time slot interval and / or symbol interval between the data channel and the control information.

[0128] Optionally, the second indication information can indicate the time slot interval and / or symbol index between the data channel and the control information.

[0129] For example, the second indication information is DC In I Thus carried, the DCI may include a parameter M, and the parameter M is used to determine the start position of the time domain of the data channel.

[0130] When scheduling in time slot granularity, the parameter M represents the start position of the time slot of the scheduled data channel and the time slot interval of the time slot where the DCI is located. For example, Figure 8 A In, the parameter is M = 1.

[0131] When scheduling in symbol granularity, the parameter M represents the start position of the time domain symbol of the scheduled data channel and the symbol interval between the time domain symbol where the DCI is located. For example, Figure 8 B In, the parameter is M = 4.

[0132] When the parameter is M = 0, the DCI and the scheduled data channel are arranged in the same time slot, while on the one hand, the scheduled data channel is the same as the start time domain symbol of the DCI, or the scheduled data channel starts from the time domain symbol next to the last time domain symbol where the DCI is located. Go to.

[0133] Optionally, parameter M may include a time slot interval parameter and a time domain symbol index. The time slot interval parameter is used to determine the time slot interval between the data channel and the time slot in which the DCI is located. The time domain symbol index is used to determine the time domain symbol index corresponding to the start slot symbol in the start time slot of the data channel. For example, in FIG. 8(b), the time slot interval is 1 and the time domain symbol index is 0, which indicates that the first time domain symbol in the time slot following the time slot in which the DCI is located starts the mapping or transmission of the PDSCH.

[0134] (Embodiment 2) Referring to FIG. 9, in this embodiment, the time slot ratios of each time slot are different. Each time slot (or radio frame) includes 10 time domain symbols. Two time domain symbols are used as guard periods or transmission / reception conversions, and the remaining 8 symbols can be used to transmit data, as further illustrated below. · Time slot n+1 includes 6 downlink symbols and 2 uplink symbols. · Time slot n+2 includes 2 downlink symbols and 6 uplink symbols. · Time slot n+3 includes 3 downlink symbols and 4 uplink symbols. · Time slot n+4 includes 4 downlink symbols and 4 uplink symbols. The scheduling information transmitted by the DCI, such as the scheduling information transmitted in time slot n+0, is used to schedule the transmission of the PDSCH.

[0135] FIG. 9 Ashows the case of scheduling according to the time slot granularity, where N = 4 is indicated by DCI. That is, the PDSCH scheduled by DCI occupies all the downlink symbols of 4 time slots, so in FIG. 9 A The 4 time slots of contain a total of 15 downlink symbols, and the PDSCH occupies the same frequency domain resource on 15 time domain symbols.

[0136] FIG. 9 B shows the case of scheduling according to the symbol granularity, where N = 14 is indicated by DCI. That is, the PDSCH scheduled by DCI occupies 14 consecutive downlink symbols.

[0137] Furthermore, the manner of indicating the transmission resources of the data channel scheduled by DCI by DCI is the same as that described in Embodiment 1, and will not be repeated herein.

[0138] In various embodiments of the present application, if the symbols in a specific time domain are reserved for transmitting other data channels or data types or system information in a time slot (or radio frame), the data channel is not mapped onto the reserved symbols.

[0139] (Embodiment 3) Referring to FIG. 10, in each time slot, 2 downlink symbols and 2 uplink symbols are used as reserved symbols, and the reserved symbols can be used to transmit system information, control information, etc., or data of a special type of service such as service data for noise reduction in a vehicle-mounted communication system.

[0140] When the transmission of downlink data is scheduled via DCI, the downlink data cannot occupy reserved symbols, and the mapping and transmission of the data can only be performed for downlink symbols that are not reserved in the time slot.

[0141] Figure 10 A shows the case of scheduling according to time slot granularity, and the parameter N = 4 is indicated by DCI. That is, the PDSCH scheduled by DCI occupies all the downlink symbols of 4 time slots, and the PDSCH is mapped to the time domain symbols that are not reserved in each time slot. Furthermore, note that since there are no downlink symbols available for mapping the PDSCH in time slot n+2, the PDSCH is not mapped to time slot n+2.

[0142] It should be noted that in the embodiments of the present application, the number of time slots to which the parameter N indicated by DCI is applied has nothing to do with whether the PDSCH is mapped to a time slot. In other words, for time slot n+j, regardless of whether there are time domain symbols available for mapping the data channel scheduled by DCI in this time slot, this time slot n+j is included in the indicated N time slots.

[0143] Figure 10 A Referring to Figure 10, N = 4 indicates that the PDSCH is mapped to 4 time slots. However, since there are no downlink symbols available for mapping the PDSCH in time slot n+2, N = 4 is also applied to this time slot n+2. That is, the PDSCH is mapped to the time domain symbols of time slots n+1, n+2, n+3, and n+4. Therefore, the PDSCH is mapped to a total of 7 time domain symbols in 4 time slots.

[0144] Figure 10 Bshows the case of scheduling according to symbol granularity. In symbol-level mapping, when it is instructed to map to 7 symbols on the control channel, PDSCH is mapped to a total of 7 symbols in time slots n+1, n+3, and n+4. When it is instructed to map to 5 symbols, PDSCH is mapped only to time slots n+1 and n+3.

[0145] In various embodiments described in this specification, each embodiment of the present application is applicable to downlink data transmission, uplink data transmission, or sidelink data transmission.

[0146] Data transmission is executed by the method in the embodiment of the present application, and the time domain symbols in time units such as time slots are not strictly regulated or restricted. The data channel does not need to have the same time domain position in each time unit. By adopting the embodiment of the present application, the resource scheduling method can be made more flexible, and the mapping of the data channel to the resource can be made more flexible.

[0147] The specific configuration and implementation of the embodiments of the present application have been described through multiple embodiments from various perspectives. The effects have been explained by at least one embodiment.

[0148] Corresponding to at least one processing method of the foregoing embodiments, in one embodiment of the present application, a terminal device 100 as shown in FIG. 11 is provided, and the terminal device 100 includes the following.

[0149] The first acquisition module 101 is configured to acquire first indication information, and the first indication information is used to determine information on a time domain resource corresponding to a first physical channel. The time domain resource of the first physical channel corresponds to a first link direction, and the time domain resource includes a time domain resource on N time units, where N is an integer greater than 1.

[0150] The transmission module 102 is configured to transmit a first physical channel via time-domain resources over N time units.

[0151] Corresponding to at least one processing method of the foregoing embodiments, in an embodiment of the present application, a network device 200 as shown in FIG. 12 is provided, and the network device 200 includes the following.

[0152] The first transmission module 201 is configured to transmit first indication information to a terminal device. The first indication information is used to determine information on time-domain resources corresponding to a first physical channel. The time-domain resources of the first physical channel correspond to a first link direction. The time-domain resources include time-domain resources over N time units, where N is an integer greater than 1, and the time-domain resources over N time units are used by the terminal device to transmit the first physical channel.

[0153] Corresponding to at least one processing method of the foregoing embodiments, in an embodiment of the present application, a central control node 300 as shown in FIG. 13 is provided, and the central control node 300 includes the following.

[0154] The first transmission module 301 is configured to transmit first indication information to a terminal device. The first indication information is used to determine information on time-domain resources corresponding to a first physical channel. The time-domain resources of the first physical channel correspond to a first link direction. The time-domain resources include time-domain resources over N time units, where N is an integer greater than 1, and the time-domain resources over N time units are used by the terminal device to transmit the first physical channel.

[0155] In the embodiments of the present application, the terminal device 100, the network device 200, and the central control node 300 can implement the corresponding functions of the terminal device in the embodiments of the foregoing method. For the corresponding processing, functions, implementations, and beneficial effects of each module (sub-module, unit, or component, etc.) in the terminal device 100, the network device 200, and the central control node 300, since they will not be repeated here, please refer to the corresponding descriptions in the embodiments of the foregoing method.

[0156] It should be noted that the functions described by each module (sub-module, unit, or component, etc.) in the terminal device 100, the network device 200, and the central control node 300 in the embodiments of the present application may be implemented by different modules (sub-modules, units, or components, etc.), or may be implemented by the same module (sub-module, unit, or component, etc.). For example, the first transmission module and the second transmission module may be different modules or the same module, and either of them can implement the corresponding functions of the terminal device in the embodiments of the present application.

[0157] FIG. 14 is a schematic diagram of the structure of a communication device 600 according to an embodiment of the present application. The communication device 600 includes a processor 610, and the processor 610 can call and execute a computer program from a memory to implement the method in the embodiments of the present application.

[0158] Optionally, the communication device 600 can also include a memory 620. The processor 610 may call and execute a computer program from the memory 620 to implement the method in the embodiments of the present application.

[0159] The memory 620 may be a separate device independent of the processor 610, or may be incorporated into the processor 610.

[0160] Optionally, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices. Specifically, the transceiver 630 may transmit information or data to other devices, or may receive information or data transmitted by other devices.

[0161] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

[0162] Optionally, the communication device 600 may be a network device according to an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method according to an embodiment of the present application. For the sake of brevity, this will not be repeated here.

[0163] Optionally, the communication device 600 may be a terminal device according to an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the terminal device in each method according to an embodiment of the present application. For the sake of brevity, this will not be repeated here.

[0164] FIG. 15 is a schematic diagram of the structure of a chip 700 according to an embodiment of the present application. The chip 700 includes a processor 710, and the processor 710 can call and execute a computer program from a memory to implement the method in the embodiment of the present application.

[0165] Optionally, the chip 700 may further include a memory 720. The processor 710 may call and execute a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0166] The memory 720 may be a separate device independent of the processor 710, or may be incorporated into the processor 710.

[0167] Optionally, chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips. Specifically, the input interface 730 may obtain information or data transmitted by other devices or chips.

[0168] Optionally, chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips. Specifically, the output interface 740 may output information or data to other devices or chips.

[0169] Optionally, the chip can be applied to the network device of the embodiment of the present application, and the chip can implement the corresponding processing implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0170] Optionally, the chip can be applied to the terminal device of the foregoing embodiment of the present application, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0171] It should be noted that the chip described in the embodiment of the present application may also be called a system-on-chip, system-on-chip, etc.

[0172] The processor may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, any conventional processor, etc.

[0173] The memory may be either volatile memory or non-volatile memory, or may include both volatile memory and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), or flash. The volatile memory may be random access memory (RAM).

[0174] Note that the memory is for illustration and is not limited thereto. For example, the memory in the embodiments of the present application may be static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), direct rambus RAM (DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include these memories and any other suitable type of memory, but is not limited thereto.

[0175] FIG. 16 is a schematic block diagram of a communication system 800 according to an embodiment of the present application. The communication system 800 includes a terminal device 810 and a network device 820.

[0176] The terminal device 810 may be used to implement the corresponding functions implemented by the terminal device in the methods of various embodiments of the present application, and the network device 820 may be used to implement the corresponding functions implemented by the network device in the methods of various embodiments of the present application. However, for the sake of brevity, this will not be repeated here.

[0177] In an embodiment of the present application, the indication information indicates that the data channel can be mapped to all available downlink symbols (or uplink symbols) in a plurality of time slots, there is no restriction on the frame structure of the system, and the data channel does not need to have the same time domain position in each time slot. Therefore, a method for supporting flexible mapping of the data channel to resources and flexible resource scheduling is implemented.

[0178] The foregoing embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the embodiments may be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center via a wired method (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or a wireless method (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium accessible by a computer, or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The available media may be a magnetic medium (e.g., floppy disk, hard disk, and magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (SSD)), etc.

[0179] In various embodiments of the present application, the sequence numbers of the foregoing processes do not represent the chronological order of execution. It should be noted that the chronological order of execution of each process should be determined by its function and internal logic, and it does not impose any limitation on the embodiments of the present application.

[0180] For the convenience and brevity of description, those skilled in the art can clearly understand the specific working processes of the described systems, devices, and units by referring to the corresponding processes in the embodiments of the foregoing method, so they will not be repeated here.

[0181] The above are only specific embodiments of the present application, and the protection scope of the present application is not limited thereto. All changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

[0182] (Advantages of the Invention) The data transmission method, terminal device, and network device according to the present disclosure can be applied in the field of wireless communication.

Description of Reference Signs

[0183] 1000: Wireless communication system 1100: Network device 1200: Terminal device S101, S102, S201: Steps 100: Terminal device 101: First acquisition module 102: Transmission module 200: Network device 201: First acquisition module 300: Central control node 301: First transmission module 600: Communication device 610: Memory 620: Processor 630: Transceiver 700: Chip 710: Processor 720: Memory 730: Input interface 740: Output interface 800: Communication system 810: Terminal device 820: Network device

Claims

1. A data transmission method, characterized in that it is applied to a terminal device, comprising: a step of obtaining first indication information by the terminal device, where the first indication information is used to determine information on a time domain resource of a first physical channel, the time domain resource of the first physical channel corresponds to a first link direction, the first link direction is a link direction of device-to-device (D2D) communication, the time domain resource includes time domain resources on N time units, and N is an integer greater than 1; a step of determining, by the terminal device, time domain symbols in the first link direction in the N time units for transmitting the first physical channel; a step of transmitting, by the terminal device, the first physical channel via the time domain resource on the N time units; wherein the terminal device determines time domain symbols in the first link direction for transmitting the first physical channel in the N time units based on fifth indication information and sixth configuration information; the fifth indication information is used to determine the time domain position of the time domain symbol in the first link direction in one time unit; the sixth configuration information is used to determine the time domain resource of a reserved symbol. A data transmission method.

2. The data transmission method according to claim 1, characterized in that the time unit includes at least one of a time slot, a subframe, a half frame, a radio frame, a system frame, and a time length T.

3. The data transmission method according to claim 1 or 2, characterized in that the first indication information includes that the number of time units corresponding to the first physical channel is N.

4. A step of obtaining second indication information by the terminal device, where the second indication information is used to determine the start position of the time domain resource corresponding to the first physical channel. The data transmission method according to any one of claims 1 to 3, further comprising this step.

5. The second indication information includes the index of the start time slot and / or the index of the start symbol of the first physical channel; or The second indication information includes a time slot interval and / or a symbol interval between a start position of the first physical channel and a first time domain position, or The second indication information includes a time slot interval and / or a symbol index between the start position of the first physical channel and the first time domain position, The first time domain position is a time domain position where scheduling information of the first physical channel is arranged, a time domain position where a channel that carries the first indication information is arranged, a time domain position where a channel that carries the second indication information is arranged, a start position of a fixed time length, The data transmission method according to claim 4, characterized in that it includes at least one of the above.

6. The time domain resource on the N time units includes a time domain resource on the N time units starting from the start position, and is characterized in that the data transmission method according to claim 4 or 5.

7. Each of the N time units includes at least one time domain symbol in the first link direction, or The time domain symbol excluding the reserved symbol in each of the N time units includes at least one time domain symbol in the first link direction, and is characterized in that the data transmission method according to claim 6.

8. The data transmission method according to claim 7, further characterized by including a step of determining, by the terminal device, the time domain resource of the reserved symbol according to the sixth configuration information.

9. The step of transmitting the first physical channel via the time domain resource is a step of transmitting, by the terminal device, the first physical channel via all time domain symbols in the first link direction excluding the time domain resource of the reserved symbol in the N time units The data transmission method according to any one of claims 1 to 8, characterized in that it includes the above.

10. A step of transmitting first indication information from a first communication device to a terminal device, wherein the first indication information is used to determine information on a time domain resource corresponding to a first physical channel, A step of transmitting fifth instruction information and sixth configuration information to the terminal device by the first communication device, wherein the fifth instruction information and the sixth configuration information are used to determine a time domain symbol in a first link direction for transmitting the first physical channel in N time units, the step; A data transmission method, characterized by including: The time domain resource of the first physical channel corresponds to the first link direction, the first link direction is a link direction of device-to-device (D2D) communication, the time domain resource includes time domain resources on N time units, N is an integer greater than 1, and the time domain resources on the N time units are used by the terminal device to transmit the first physical channel, The fifth instruction information is used to determine the time domain position of the time domain symbol in the first link direction in one time unit, The sixth configuration information is used to determine the time domain resource of the reserved symbol, the data transmission method.

11. The time unit includes at least one of a time slot, a subframe, a half frame, a radio frame, a system frame, and a time length T, The data transmission method according to claim 10, characterized in that the first instruction information includes that the number of time units corresponding to the first physical channel is N.

12. A terminal device, A first acquisition module configured to acquire first instruction information, wherein the first instruction information is used to determine information on a time domain resource corresponding to a first physical channel, the time domain resource of the first physical channel corresponds to a first link direction, the first link direction is a link direction of device-to-device (D2D) communication, the time domain resource includes time domain resources on N time units, and N is an integer greater than 1, the first acquisition module; A transmission module configured to transmit the first physical channel via the time domain resources on the N time units and determine a time domain symbol in the first link direction in the N time units for transmitting the first physical channel by the terminal device; Comprising: The terminal device determines the time domain symbols in the first link direction for transmitting the first physical channel based on the fifth instruction information and the sixth configuration information. The fifth instruction information is used to determine the time domain position of the time domain symbols in the first link direction in one time unit. The terminal device is characterized in that the sixth configuration information is used to determine the time domain resources of the reserved symbols. **Claim 13** A first transmission module configured to transmit first instruction information to a terminal device, where the first instruction information is used to determine information on time domain resources corresponding to a first physical channel. A communication device, characterized by comprising: The time domain resources of the first physical channel correspond to a first link direction, the first link direction is a link direction of device-to-device (D2D) communication, the time domain resources include time domain resources on N time units, N is an integer greater than 1, and the time domain resources on the N time units are used by the terminal device to transmit the first physical channel. The first transmission module is further configured to transmit fifth instruction information and sixth configuration information to the terminal device, and the fifth instruction information and the sixth configuration information are used to determine the time domain symbols in the first link direction for transmitting the first physical channel in the N time units. The fifth instruction information is used to determine the time domain position of the time domain symbols in the first link direction in one time unit. A communication device, wherein the sixth configuration information is used to determine the time domain resources of the reserved symbols.

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