CN114916069A

CN114916069A - Data transmission method and communication device

Info

Publication number: CN114916069A
Application number: CN202110185194.7A
Authority: CN
Inventors: 刘荣宽; 张鹏; 张佳胤; 周国华
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2022-08-16
Also published as: WO2022170976A1

Abstract

A data transmission method and a communication device are used for simplifying an interaction flow and reducing scheduling time delay in a terminal cooperation transmission process. In the application, a network device receives a resource request from a first terminal, wherein the resource request is used for requesting transmission resources of first data; the network equipment sends a side row indication to the first terminal, wherein the side row indication is used for indicating side row resources, the side row resources are used for transmitting second data between the first terminal and the second terminal, and the second data is part or all of the first data; and the network equipment sends a first uplink instruction to the second terminal, wherein the first uplink instruction is used for indicating first uplink resources, and the first uplink resources are used for transmitting second data between the second terminal and the network equipment.

Description

Data transmission method and communication device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission method and a communications apparatus.

Background

Data is one of the core elements of an industrial scene, and the interaction of the data in the industrial scene needs the support of connection. The 5G NR serving as a breakthrough wireless connection technology can help equipment in an industrial scene to realize comprehensive connection, so that the wiring and construction cost of industrial data acquisition in an intelligent factory is obviously reduced. On one hand, in an industrial scene, equipment such as an industrial camera, a robot, an automatic guided vehicle, an Augmented Reality (AR) head display and the like can generate a large-data-packet large-flow service at a sending end, the requirement of ultra-large capacity is provided for uplink transmission of a communication system, and the uplink rate of Gbps magnitude needs to be supported every thousand square meters. On the other hand, the number of industrial sending terminals is large, the types are many, and the conditions that the number of transmitting antennas is limited and the uplink transmission bandwidth is limited exist in the system, so that the data transmission capability of a single terminal is limited. Therefore, aiming at an industrial scene with the requirement of uplink large capacity, a new technical means is needed to further increase the speed and meet the requirement of large-data-packet-class services.

For large data packet transmission, terminal cooperative transmission can improve the end-to-end transmission rate. Illustratively, a first terminal generates a large data packet (denoted as data a), which needs to be sent to a network device, and a second terminal may assist the first terminal to send the data a, specifically, the first terminal divides the data a into two small data (denoted as data B and data C, respectively), the first terminal sends the data B to the second terminal based on a schedule of the network device, if the second terminal successfully receives the data B, an Acknowledgement (ACK) is fed back to the first terminal, and the corresponding first terminal sends the ACK to the network device based on the ACK from the second terminal. And then, the first terminal sends the data C to the network equipment based on the scheduling of the network equipment, and the second terminal sends the data B to the network equipment based on the scheduling of the network equipment.

After the network device receives the ACK from the first terminal, that is, after the network device determines that the first terminal successfully sends the data B to the second terminal, the network device schedules the first terminal and the second terminal to send the data C and the data B, respectively. In the terminal cooperation transmission process, the interaction flow is complex and the scheduling time is prolonged.

Disclosure of Invention

The application provides a data transmission method and a communication device, which are used for simplifying an interaction flow and reducing scheduling time delay in a terminal cooperation transmission process.

In a first aspect, the present application provides a data transmission method, including: the network equipment receives a resource request from a first terminal, wherein the resource request is used for requesting transmission resources of first data; the network equipment sends a side row indication to the first terminal, wherein the side row indication is used for indicating side row resources, the side row resources are used for transmitting second data between the first terminal and the second terminal, and the second data is part or all of the first data; and the network equipment sends a first uplink instruction to the second terminal, wherein the first uplink instruction is used for indicating first uplink resources, and the first uplink resources are used for transmitting second data between the second terminal and the network equipment.

In the above technical solution, the network device receives a resource request from the first terminal, sends a sidestream indication to the first terminal according to the resource request, and sends a first uplink indication to the second terminal, where the sidestream indication is used to indicate a resource for the first terminal to send second data to the second terminal, and the first uplink indication is used to indicate a resource for the second terminal to send the second data to the network device.

In a possible implementation manner, the first uplink indication occupies the first downlink resource, and a position of the time domain resource in the first downlink resource is before a position of the time domain resource in the side line resource.

In the above technical solution, in the communication system, the control information (such as the first uplink indication and the sidestream indication) is transmitted on the control plane, the data (such as the second data) is transmitted on the user plane, and the control plane and the user plane are isolated, so that the communication efficiency can be effectively improved, and the communication stability is ensured.

In a possible implementation manner, the sidelink indication includes identification information of sidelink transmission between the first terminal and the second terminal, and the first uplink indication includes identification information used for associating data transmitted on the first uplink resource with data transmitted on the sidelink resource.

In the above technical solution, the sidelink indication and the first uplink indication both include identification information of sidelink transmission between the first terminal and the second terminal, and indicate that data transmitted in the sidelink between the first terminal and the second terminal and data transmitted in the uplink between the second terminal and the network device are related, so that the second terminal transmits data received on the sidelink resource to the network device through the first uplink resource. The second terminal does not need to send hybrid automatic repeat request acknowledgement information to the first terminal, which is beneficial to reducing the number of signaling interaction.

In a possible implementation manner, the time domain resource in the first uplink resource may be determined by the time domain resource in the sidelink resource and the processing capability of the second terminal. The processing capability of the second terminal is used for indicating a first time length, the first time length is the sum of a second time length and a third time length, the second time length is the time length of decoding the data transmitted on the sideline resource by the second terminal to obtain second data, and the third time length is the time length of coding the second data by the second terminal to obtain the data transmitted on the first uplink resource; the time length between the initial position of the time domain resource in the first uplink resource and the end position of the time domain resource in the side row resource is greater than or equal to the first time length.

In the above technical solution, the network device considers a decoding process after the second terminal receives the second data and an encoding process before the second terminal sends the second data, which is helpful for ensuring that the second terminal sends the second data to the network device after the second terminal completes processing the second data, and is also helpful for avoiding resource waste.

In a possible implementation manner, the first uplink indication is further used to indicate a second uplink resource, where the second uplink resource is used to transmit a hybrid automatic repeat request acknowledgement between the network device and the second terminal, and the hybrid automatic repeat request acknowledgement is used to indicate a transmission state of the second data on the sidelink resource.

In the above technical solution, the network device may further indicate, to the second terminal, that the second terminal feeds back a resource of hybrid automatic repeat request acknowledgement information, where the hybrid automatic repeat request acknowledgement information may be uplink control information or uplink data, and the second terminal may send the hybrid automatic repeat request acknowledgement information to the network device according to a receiving state of the second data (or according to a receiving state/transmission state of the second data on the sidelink resource).

In one possible implementation manner, the method further includes: and the network equipment sends a second uplink instruction to the first terminal, wherein the second uplink instruction is used for indicating third uplink resources, the third uplink resources are used for transmitting third data between the first terminal and the network equipment, and the third data is part or all of the first data.

In the above technical solution, the network device may further allocate a third uplink resource for the first terminal to send third data, and the first terminal may send the third data to the network device on the third uplink resource, so that the first terminal and the second terminal may send respective data to the network device, which is beneficial to improving transmission efficiency and transmission accuracy.

In a possible implementation manner, the second uplink indication occupies the second downlink resource, and a position of the time domain resource in the second downlink resource is before a position of the time domain resource in the sidelink resource.

In the above technical solution, in the communication system, the control information (such as the first uplink indication, the second uplink indication, and the sidestream indication) is first transmitted on the control plane, and then the data (such as the second data) is transmitted on the user plane, so that the control plane and the user plane are isolated, which can effectively improve the communication efficiency and ensure the communication stability.

In a possible implementation manner, the sidelink indication includes identification information of sidelink transmission between the first terminal and the second terminal, and the second uplink indication includes identification information, and the identification information is used for associating data transmitted on the sidelink resource with data transmitted on the third uplink resource.

In the above technical solution, the sidelink indication and the second uplink indication both include identification information of sidelink transmission between the first terminal and the second terminal, and characterize that data transmitted in the sidelink between the first terminal and the second terminal and data transmitted in the uplink between the first terminal and the network device are related, and the first terminal may transmit data sent on the sidelink resource to the network device through the third uplink resource, which is beneficial to improving transmission accuracy.

In a possible implementation manner, the first data, the second data and the third data are the same, and the first terminal and the second terminal respectively send the same data to the network device, which is beneficial to improving the accuracy of data transmission. Or the second data and the third data form first data, the first terminal sends the third data to the network device, and the second terminal sends the second data to the network device, so that the data transmission efficiency is improved.

In a second aspect, the present application provides a data transmission method, including: a first terminal sends a resource request to network equipment, wherein the resource request is used for requesting transmission resources of first data; the first terminal receives a sideline indication from the network equipment, the sideline indication is used for indicating sideline resources, the sideline resources are used for transmission of second data between the first terminal and the second terminal, and the second data are part or all of the first data.

In one possible implementation manner, the method further includes: the first terminal receives a second uplink indication from the network device, where the second uplink indication is used to indicate a third uplink resource, the third uplink resource is used for transmission of third data between the first terminal and the network device, and the third data is part or all of the first data.

In a possible implementation manner, the second uplink indication occupies the second downlink resource, and the position of the time domain resource in the second downlink resource is before the position of the time domain resource in the sideline resource.

In a possible implementation manner, the first data, the second data and the third data are the same, or the second data and the third data form the first data.

In a third aspect, the present application provides a data transmission method, including: a second terminal receives a first uplink indication from network equipment, wherein the first uplink indication is used for indicating first uplink resources; and the second terminal sends the second data to the network equipment on the first uplink resource under the condition that the second terminal successfully receives the second data from the first terminal on the sidestream resource.

In a possible implementation manner, the first uplink indication occupies the first downlink resource, and a position of the time domain resource in the first downlink resource is before a position of the time domain resource in the side row resource.

In one possible implementation, the method further includes: the second terminal receives the side row control information from the first terminal; the sidelink control information indicates identification information of sidelink transmission between the first terminal and the second terminal, the first uplink indication comprises identification information, and the identification information is used for associating data transmitted on the first uplink resource with data transmitted on the sidelink resource.

In a possible implementation manner, the time domain resource in the first uplink resource is determined by the time domain resource in the sidelink resource and the processing capability of the second terminal.

In a possible implementation manner, the processing capability of the second terminal is used to indicate a first duration, where the first duration is a sum of a second duration and a third duration, the second duration is a duration for the second terminal to decode the data transmitted on the sideline resources to obtain second data, and the third duration is a duration for the second terminal to encode the second data to obtain data transmitted on the first uplink resources; the time length between the starting position of the time domain resource in the first uplink resource and the ending position of the time domain resource in the side row resource is greater than or equal to the first time length.

In a possible implementation manner, the first uplink indication is further used for indicating a second uplink resource, and the method further includes: and the second terminal sends a hybrid automatic repeat request acknowledgement to the network equipment on the second uplink resource, wherein the hybrid automatic repeat request acknowledgement is used for indicating the transmission state of the second data on the sideline resource.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, where the apparatus has a function of implementing the network device in the first aspect or any possible implementation manner of the first aspect, and the apparatus may be a network device, and may also be a chip included in the network device.

The apparatus may also have a function of implementing the first terminal in any possible implementation manner of the second aspect or the second aspect, and the apparatus may be the first terminal or a chip included in the first terminal.

The apparatus may also have a function of implementing the second terminal in any possible implementation manner of the third aspect or the third aspect, and the apparatus may be the second terminal, and may also be a chip included in the second terminal.

The functions of the above-mentioned devices can be realized by hardware, and also by hardware or software which includes one or more modules or units or means (means) corresponding to the above-mentioned functions.

In a possible implementation manner, the apparatus structurally includes a processing module and a communication module, where the processing module is configured to support the apparatus to implement the corresponding function of the network device in any possible implementation manner of the first aspect or the first aspect, or to execute the corresponding function of the first terminal in any possible implementation manner of the second aspect or the second aspect, or to execute the corresponding function of the second terminal in any possible implementation manner of the third aspect or the third aspect. The communication module is configured to support communication between the apparatus and other communication devices, for example, when the apparatus is a network device, the apparatus may receive a resource request from the first terminal. The apparatus may also include a memory module, coupled to the processing module, that stores program instructions and data necessary for the apparatus. As an example, the processing module may be a processor, the communication module may be a transceiver, the storage module may be a memory, and the memory may be integrated with the processor or provided separately from the processor.

In another possible implementation manner, the structure of the apparatus includes a processor and may further include a memory. The processor is coupled to the memory and is configured to execute the computer program instructions stored in the memory to enable the apparatus to implement the functions corresponding to the network device in any one of the possible implementations of the first aspect or the first aspect, or to implement the functions corresponding to the first terminal in any one of the possible implementations of the second aspect or the second aspect, or to implement the functions corresponding to the second terminal in any one of the possible implementations of the third aspect or the third aspect.

Optionally, the apparatus further comprises a communication interface, the processor being coupled to the communication interface. When the apparatus is a network device or a terminal, the communication interface may be a transceiver or an input/output interface; when the apparatus is a chip included in a network device or a chip included in a terminal, the communication interface may be an input/output interface of the chip. Alternatively, the transceiver may be a transmit-receive circuit and the input/output interface may be an input/output circuit.

In a fifth aspect, an embodiment of the present application provides a chip system, including: a processor, coupled to the memory, where the memory is used to store a program or instructions, and when the program or instructions are executed by the processor, the system on chip is enabled to implement the corresponding functions of the network device in any one of the above-mentioned possible implementations of the first aspect or the first aspect, or to implement the corresponding functions of the first terminal in any one of the above-mentioned possible implementations of the second aspect or the second aspect, or to implement the corresponding functions of the second terminal in any one of the above-mentioned possible implementations of the third aspect or the third aspect.

Optionally, the system-on-chip further comprises an interface circuit for interfacing code instructions to the processor.

For example, the number of processors in the chip system may be one or more, and the processors may be implemented by hardware or software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory.

Illustratively, the memory in the system-on-chip may also be one or more. The memory may be integral to the processor or may be separate from the processor. Illustratively, the memory may be a non-transitory processor, such as a read only memory ROM, which may be integrated on the same chip as the processor or may be separately provided on different chips.

In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program or an instruction is stored, which, when being implemented, causes a computer to implement the functions corresponding to the network device in any possible implementation manner of the above first aspect or the first aspect, or implement the functions corresponding to the first terminal in any possible implementation manner of the above second aspect or the second aspect, or implement the functions corresponding to the second terminal in any possible implementation manner of the above third aspect or the third aspect.

In a seventh aspect, an embodiment of the present application provides a computer program product, which, when being read and implemented by a computer, enables the computer to implement the corresponding functions of the network device in any one of the above-mentioned first aspect or any one of the possible implementations of the first aspect, or implement the corresponding functions of the first terminal in any one of the above-mentioned second aspect or any one of the possible implementations of the second aspect, or implement the corresponding functions of the second terminal in any one of the above-mentioned third aspect or any one of the possible implementations of the third aspect.

In an eighth aspect, an embodiment of the present application provides a communication system, where the communication system includes a network device having a function in any one of the foregoing first aspect and possible implementations of the first aspect, a first terminal having a function in any one of the foregoing second aspect and possible implementations of the second aspect, and a second terminal having a function in any one of the foregoing third aspect and possible implementations of the third aspect.

For technical effects that can be achieved by any one of the second aspect to the eighth aspect, reference may be made to the description of the advantageous effects in the first aspect, and details are not repeated here.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture provided in the present application;

fig. 2 is a schematic flowchart of a first method for transmitting data through terminal cooperation according to the present application;

fig. 3 is a schematic view of a set of data transmission modes provided in the present application;

fig. 4 is a schematic flowchart of a second data transmission method for terminal cooperation according to the present application;

fig. 5 is a schematic structural diagram of a communication device provided in the present application;

fig. 6 is a schematic structural diagram of another communication device provided in the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

A terminal, comprising a device providing voice and/or data connectivity to a user, may for example comprise a handheld device having wireless connectivity capability, or a processing device connected to a wireless modem. The terminal may communicate with a core network via a Radio Access Network (RAN), and may exchange voice and/or data with the RAN. The terminal may include a User Equipment (UE), a wireless terminal, a mobile terminal, a (device-to-device, D2D) terminal, a vehicle networking (V2X) terminal, a machine-to-machine/machine-type communications (M2M/MTC) terminal, an internet of things (IoT) terminal, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an access point (access point, AP), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), or user equipment (user device), etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminals, portable, pocket, hand-held, computer-embedded mobile devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.

By way of example and not limitation, in the embodiments of the present application, the terminal may also be a wearable device. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. The wearable device may be worn directly on the body or may be a portable device integrated into the user's clothing or accessory. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device has full functions and large size, and can realize complete or partial functions without depending on a smart phone, for example: smart watches or smart glasses and the like, and only focus on a certain type of application function, and need to be matched with other equipment such as a smart phone for use, such as various smart bracelets, smart helmets, smart jewelry and the like for physical sign monitoring.

While the various terminals described above, if located on a vehicle (e.g., placed in or mounted in a vehicle), may be considered to be vehicle-mounted terminals, also referred to as on-board units (OBUs), for example. The terminal in the embodiment of the present application may also be an on-board module, an on-board component, an on-board chip, or an on-board unit that is built in the vehicle as one or more components or units, and the vehicle may implement the method in the present application through the built-in on-board module, the built-in on-board component, the built-in on-board chip, or the built-in on-board unit.

Network devices, for example, Access Network (AN) devices, such as base stations (e.g., access points), may refer to devices in AN access network that communicate with terminals over one or more cells over AN air interface. For example, the network device may include an evolved Node B (NodeB or eNB or e-NodeB) in an LTE system or an LTE-a (long term evolution-advanced), or may also include a next generation Node B (gNB) in a 5G NR system, or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud access network (Cloud RAN) system, which is not limited in the embodiments.

Three, sidelink, with the development of wireless communication technology, people's demand for high data rate and user experience is increasing, and people's demand for proximity services to understand and communicate with people or things around is increasing, so D2D technology is growing. The application of the D2D technology can reduce the burden of a cellular network, reduce the battery power consumption of a terminal, improve the data rate and well meet the requirement of proximity service. The D2D technology allows multiple terminals supporting D2D functionality to conduct direct discovery and direct communication with or without network infrastructure. In view of the characteristics and advantages of the D2D technology, a vehicle networking application scenario based on the D2D technology is provided. Under a network of Long Term Evolution (LTE) technology proposed by The third Generation Partnership Project (3 GPP), a Vehicle-To-anything communication (V2X) networking technology is proposed. The 3GPP standards organization formally promulgated the first generation LTE V2X standard, LTE Release 14, in the early 2017. To meet the more extensive application scenario requirements, 5G NR V2X was further studied in the 3GPP standards organization. In the above D2D and V2X technologies, the communication protocol between terminals is referred to as PC5 port, and the corresponding link is referred to as Sidelink (SL).

The resources, which may also be referred to as time-frequency resources, include time-domain resources and frequency-domain resources, where the frequency-domain resources may be one or more Resource Blocks (RBs), or one or more Resource Elements (REs), or one or more carriers (carriers), or one or more bandwidth parts (BWPs), and the like. The time domain resource may be one or more subframes, or one or more slots, or one or more symbols over one or more slots, etc.

And fifthly, a Uu interface, wherein the Uu interface is English and refers to a communication interface between the terminal and the network equipment.

The channel types defined in the Uu interface include a Physical Uplink Shared Channel (PUSCH) and a Physical Uplink Control Channel (PUCCH), where the PUSCH is used for a terminal to transmit uplink data to a network device, and the PUCCH is used for the terminal to transmit uplink control information to the network device.

And sixthly, a PC5 interface, wherein English is a PC5 interface, and the interface refers to a communication interface between terminals.

The Channel types defined in the PC5 interface include a psch (Physical downlink shared Channel) for transmitting Sidelink data between a terminal and a terminal, a PSCCH (Physical downlink control Channel) for transmitting Sidelink control information between a terminal and a Physical Sidelink Feedback Channel (PSCCH) for transmitting HARQ-ACK (hybrid automatic repeat request-acknowledgement) information between a terminal and a terminal, and a Physical Sidelink Feedback Channel (PSFCH).

Seven, the L1 Layer, Layer 1, refers to the physical Layer in the protocol stack.

Eighthly, the terms "system" and "network" in the embodiments of the present application may be used interchangeably. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a alone, A and B together, and B alone, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

The method provided by the application can be applied to various communication systems, for example, a New Radio (NR) system of 5G, a new communication system appearing in future communication development, and the like.

Fig. 1 shows an exemplary communication system according to the present application, where a network device and 2 terminals (denoted by terminal 1 and terminal 2, respectively) form a single-cell communication system, terminal 1 and terminal 2 may transmit uplink data to the network device, respectively or simultaneously, the network device may transmit downlink data to terminal 1 and terminal 2, and terminal 1 and terminal 2 may also transmit sideline data to each other.

It should be understood that fig. 1 is only an exemplary illustration and does not specifically limit the number of terminals, network devices, and cells covered by the network devices included in the communication system.

Aiming at the problems of complex flow and long time delay in the cooperative transmission process of the network equipment scheduling terminal in the prior art, the interactive flow is simplified, and the scheduling time delay is reduced. The application exemplarily provides a data transmission method, and the network device can respectively allocate uplink resources to the second terminal before the first terminal and the second terminal transmit the sidestream data, so that an interaction flow in a process of scheduling terminal cooperative transmission by the network device is simplified, and scheduling delay is reduced.

Specifically, in the data transmission method of terminal cooperation provided by the present application, when a first terminal needs to send a certain data packet to a network device, the first terminal may send the data packet to the network device based on the assistance of a second terminal because the data transmission capability of the first terminal is limited. For convenience of description, the packet may be referred to as first data. In the method, the first terminal may first send second data to the second terminal, where the second data may be part or all of the first data. Then the first terminal sends the third data to the network device, and the second terminal sends the second data to the network device. Wherein the third data may be part or all of the first data, thereby completing the cooperative transmission. Illustratively, the first terminal and the second terminal may be terminals 1 and 2 as in fig. 1.

Of course, in the present application, the first terminal may be referred to as a transmitting terminal, Tx UE, or the like, and the second terminal may be referred to as a receiving terminal, Rx UE, or the like. In addition, the first terminal may also be referred to as a source terminal (SUE) as a source of the first data, and the second terminal may also be referred to as a cooperative terminal (CUE) as a collaborator of the first terminal.

Based on the above description, fig. 2 is a schematic flowchart of a data transmission method for terminal cooperation exemplarily provided by the present application, where:

step 201, a first terminal sends a resource request to a network device.

The resource request is for requesting transmission resources for the first data.

In an optional implementation, the transmission resource of the first data includes any one or more of the following: a sidelink resource, a first uplink resource and a third uplink resource. Accordingly, the resource request is for requesting any one or more of the following from the network device: a side uplink resource, a first uplink resource and a third uplink resource.

The sideline resource is used for transmitting second data between the first terminal and the second terminal, or the sideline resource is used for the first terminal to send the second data to the second terminal, and/or the second terminal to receive the second data from the first terminal.

The first uplink resource is used for transmitting second data between the second terminal and the network device, or the first uplink resource is used for the second terminal to send the second data to the network device, and/or the network device receives the second data from the second terminal.

The third uplink resource is used for transmitting third data between the first terminal and the network device, or the third uplink resource is used for the first terminal to send the third data to the network device, and/or the network device receives the third data from the first terminal.

In an optional implementation manner, the resource request includes a data amount of the first data, and the network device may determine any one or more of the sideline resource, the first uplink resource, and the third uplink resource according to the data amount of the first data in the resource request.

Fig. 3 is an implementation scenario in which a second terminal assists a first terminal to send first data to a network device according to an example provided in the present application. Specifically, in scenario 1, the second data is a part of the first data, and the third data is another part of the first data, that is, the second data and the third data form the first data. In this manner, the second terminal and the first terminal respectively transmit different portions of the first data, which helps to improve the efficiency of transmitting the first data.

In scenario 2, the second data is all of the first data, and the third data is all of the first data, that is, the first data, the second data, and the third data are the same. In this way, the second terminal and the first terminal respectively transmit the first data, which is helpful for improving the accuracy of transmitting the first data.

In scenario 3, the first data is the same as the second data, the first terminal may establish a sidelink connection with the second terminal but cannot establish an uplink connection with the network device, the first terminal may transmit the second data to the second terminal, and then the second terminal transmits the second data to the network device. In this manner, the first terminal may transmit data to the network device via the second terminal. It should be understood that the first terminal does not send the third data to the network device in this transmission mode.

Referring to three scenarios shown in fig. 3, the network device determines any one or more of the sidestream resource, the first uplink resource, and the third uplink resource according to the data amount of the first data in the resource request, which includes at least the following examples:

in scenario 1, the network device may determine, according to the data amount of the first data, and in combination with the uplink channel state of the first terminal, the uplink channel state of the second terminal, and the sideline channel state between the first terminal and the second terminal, the data amount of the second data and the data amount of the third data, and further determine, according to the data amount of the second data, the sideline resource, and respectively determine the first uplink resource and the third uplink resource according to the data amount of the second data and the data amount of the third data.

In scenario 2, the network device may determine the sideline resource, the first uplink resource, and the third uplink resource according to the data amount of the first data.

In scenario 3, the network device may determine the sideline resource and the first uplink resource according to the data amount of the first data.

In addition, when the network device determines the first uplink resource, it needs to ensure that the second terminal completes processing of the second data. Here, the process of the second terminal processing the second data is explained first: the second terminal needs to decode/decode the data received on the sidestream resource to obtain the second data. The second terminal further needs to encode the second data and then transmit the second data on the first uplink resource.

The time length used for decoding by the second terminal may be referred to as a second time length or PSSCH decoding time, the time length used for encoding by the second terminal may be referred to as a third time length or PUSCH encoding time, and a sum of the second time length and the third time length is a time length required by the second terminal to process the second data, which may be referred to as a first time length.

In an optional implementation manner, the network device may determine the first uplink time domain resource in the first uplink resource according to the side row time domain resource in the side row resource and the processing capability of the second terminal. Specifically, the network device may determine the second duration and the third duration according to the processing capability of the terminal, so as to determine the first duration, and then determine the first uplink time domain resource according to the first duration and the side row time domain resource, where a duration between a starting position of the first uplink time domain resource and an ending position of the side row time domain resource is greater than or equal to the first duration.

The processing capability of the second terminal may be obtained by the network device through a terminal capability reporting procedure, and in the terminal capability reporting procedure, the second terminal may report the PSSCH decoding capability and the PUSCH encoding capability to the network device.

In addition, the network device may further determine a second uplink resource, where the second uplink resource is used for the second terminal to send HARQ-ACK information to the network device, which may be described in step 205 below.

Illustratively, the resource request may specifically be a Buffer State Report (BSR). Specifically, the first terminal sends a Scheduling Request (SR) to the network device, and correspondingly, the network device sends Downlink Control Information (DCI) to the first terminal, where the DCI is used to instruct the first terminal to send uplink resources of the BSR. And the first terminal sends BSR to the network equipment on the requested uplink resource.

Step 202, the network device sends a side row indication to the first terminal.

Wherein the side row indication indicates side row resources. Correspondingly, the first terminal receives the sideline instruction from the network equipment, and determines the sideline resource for sending the second data to the second terminal according to the sideline instruction. The side row resources include side row time domain resources and side row frequency domain resources.

Illustratively, the Sidelink indication may specifically be a Sidelink grant (SL grant).

Step 203, the network device sends a first uplink indication to the second terminal.

Wherein the first uplink indication is used for indicating a first uplink resource. Correspondingly, the second terminal receives the first uplink indication from the network device, and determines the first uplink resource according to the first uplink indication.

The first uplink indication occupies a first downlink resource, and the first downlink resource comprises a first downlink time domain resource and a first downlink frequency domain resource. In an optional implementation manner, the network device may send the first uplink indication to the second terminal before the first terminal sends the second data to the second terminal, that is, the position of the first downlink time domain resource is before the position of the sidelink time domain resource. In this way, in the communication system, control information (such as a first uplink indication and a sidelink indication) is transmitted on the control plane first, and data (such as second data) is transmitted on the user plane, so that the control plane and the user plane are isolated, the communication efficiency can be effectively improved, and the communication stability can be guaranteed.

Step 204, the first terminal sends the second data to the second terminal on the sideline resource.

Optionally, the first terminal sends, to the second terminal, sidelink control information (also referred to as PSCCH) associated with the second data, where the sidelink control information is associated with the second data and used for indicating a location of a sidelink resource carrying the second data, and accordingly, the second terminal may determine the location of the sidelink resource according to the sidelink control information and then receive the second data from the first terminal on the sidelink resource.

In an alternative, the first terminal may send the second data to the second terminal based on Transport Blocks (TBs), where the second data may include at least one TB, and each TB includes at least one Code Block Group (CBG). For example, the first terminal determines that the second data includes 3 TBs, and the first terminal sends the 3 TBs to the second terminal on the sideline resource, and if one of the TBs is not successfully received by the second terminal, the first terminal may retransmit the one TB without retransmitting other TBs that are successfully received.

In yet another alternative, the first terminal may further send second data to the second terminal based on the CBGs, and the second data may include at least one CBG. For example, the first terminal determines that the second data includes 3 CBGs, and the first terminal sends the 3 CBGs to the second terminal on the sidelink resource, and if one of the CBGs is not successfully received by the second terminal, the first terminal may retransmit the one CBG without retransmitting other CBGs that are successfully received.

Step 205, the second terminal sends the second data to the network device on the first uplink resource.

In an alternative implementation, the second terminal may determine a receiving status for receiving the second data according to the data received on the sideline resource. The receiving status of the second terminal is, for example, correct reception of the second data, incorrect reception of the second data, correct reception of a part of the second data, and the like. The receiving state of the second terminal receiving the second data may also be understood as a transmission state of the second data on the sideline resource.

Specifically, under the condition that the first terminal sends the second data to the second terminal based on the TBs, the second terminal determines whether each TB is correctly received or not, and sends the correctly received TB to the network device. For example, the second data may be a TB, and if the second terminal correctly receives the TB, the TB (i.e., the second data) is sent to the network device.

And under the condition that the first terminal sends the second data to the second terminal based on the CBG, the second terminal determines whether each CBG is correctly received or not, and sends the correctly received CBG to the network equipment, or sends the correctly received CBG to the network equipment after forming the TB. For example, the second data may be a TB including a plurality of CBGs, and if one of the CBGs is correctly received by the second terminal, the one CBG may be sent to the network device. Or the second terminal may send the TB (i.e., the second data) to the network device after determining that all CBGs in the TB are successfully received.

In this embodiment, the network device may not successfully receive all or part of the second data, for example, may not successfully receive the fourth data, where the fourth data is all or part of the second data. For example, if the second terminal transmits the second data to the network device based on the TBs, the fourth data may be one or more TBs; the fourth data may be one or more CBGs if the second terminal transmits the second data to the network device based on the CBGs.

As in scenario 2 shown in fig. 3, the data transmitted by the first terminal to the network device is the same as the data transmitted by the second terminal to the network device. In the case where the network device does not successfully receive the fourth data from the second terminal, the network device may determine whether to schedule retransmission of the fourth data according to the received data from the first terminal.

Further, when the network device schedules to retransmit the fourth data, the method may specifically be a manner (1) and/or a manner (2), where the manner (1) schedules the first terminal to retransmit the fourth data to the second terminal for the network device, and schedules the second terminal to retransmit the fourth data to the network device; the method (2) schedules the first terminal to retransmit the fourth data to the network device. This is explained in connection with the following examples (1) to (6).

In case the network device and the second terminal are based on TB transmission, the first uplink indication is used for scheduling 2 TBs. Further, the second data consists of 2 TBs (denoted TB1 and TB2, respectively).

Example (1), the network device receives TB1 successfully from the second terminal and does not receive TB2(TB2 is the fourth data) successfully from the second terminal. The network device receives TB1 and TB2 successfully from the first terminal. The network device may determine to successfully receive TB1 and TB2 without scheduling a retransmission of TB 2.

Example (2), the network device receives TB1 successfully from the second terminal, and does not receive TB2 successfully from the second terminal (TB2 is the fourth data). The network device did not receive TB1 successfully from the first terminal and received TB2 successfully from the first terminal. The network device may determine to successfully receive TB1 and TB2 without scheduling a retransmission of TB 2.

Example (3), the network device receives TB1 successfully from the second terminal, and does not receive TB2 successfully from the second terminal (TB2 is the fourth data). The network device receives the TB1 successfully from the first terminal and does not receive the TB2 successfully from the first terminal. The network device may determine that TB2 was not successfully received and schedule the first terminal to retransmit TB2 to the second terminal and schedule the second terminal to retransmit TB2 to the network device and/or schedule the first terminal to retransmit TB2 to the network device.

The first uplink indication is used for scheduling 1 TB in case the network device and the second terminal are based on CBG transmission. Further, the second data is composed of 1 TB, and 2 CBGs (denoted as CBG1 and CBG2, respectively) are included in the 1 TB.

Example (4), the network device receives the CBG1 successfully from the second terminal and does not receive the CBG2 successfully from the second terminal (CBG2 is the fourth data). The network device receives the CBGs 1 and 2 successfully from the first terminal. The network device may determine that the CBGs 1 and 2 were successfully received without scheduling retransmission of the CBG 2.

Example (5), the network device receives the CBG1 successfully from the second terminal and does not receive the CBG2 successfully from the second terminal (CBG2 is the fourth data). The network device does not receive the CBG1 successfully from the first terminal and receives the CBG2 successfully from the first terminal. The network device may determine to successfully receive CBG1 and CBG2 without scheduling a retransmission of the CBG 2.

Example (6), the network device receives the CBG1 successfully from the second terminal and does not receive the CBG2 successfully from the second terminal (CBG2 is the fourth data). The network device does not receive CBG1 successfully from the first terminal and does not receive CBG2 successfully from the first terminal. The network device may determine that the CBG2 was not successfully received and schedule the first terminal to retransmit the CBG2 to the second terminal and schedule the second terminal to retransmit the CBG2 to the network device and/or schedule the first terminal to retransmit the CBG2 to the network device.

In scenario 1 shown in fig. 3, data transmitted by the first terminal to the network device is different from data transmitted by the second terminal to the network device, whereas in scenario 3 shown in fig. 3, data transmitted by the first terminal to the network device is not transmitted by the first terminal, and in both scenarios, in a case where the network device does not successfully receive fourth data from the second terminal, the network device needs to schedule the first terminal to retransmit the fourth data to the second terminal and schedule the second terminal to retransmit the fourth data to the network device.

In case of TB-based transmission, the first uplink indication is used to schedule 2 TBs. Further, the second data consists of 2 TBs (denoted TB1 and TB2, respectively). Illustratively, the network device receives TB1 successfully from the second terminal and does not receive TB2(TB2 is the fourth data) successfully from the second terminal. The network device schedules the first terminal to retransmit TB2 to the second terminal and the second terminal to retransmit TB2 to the network device.

In case of CBG-based transmission, the first uplink indication is used to schedule 1 TB. Further, the second data is composed of 1 TB, and 2 CBGs (denoted as CBG1 and CBG2, respectively) are included in the 1 TB. Illustratively, the network device receives the CBG1 successfully from the second terminal and does not receive the CBG2(CBG2 is the fourth data) successfully from the second terminal. The network device schedules the first terminal to retransmit the CBG2 to the second terminal and schedules the second terminal to retransmit the CBG2 to the network device.

It should be added that the second terminal may also feed back HARQ-ACK information to the network device according to the receiving state of the second data. The HARQ-ACK information is carried in a second uplink resource, where the second uplink resource may be indicated by the first uplink indication, and for example, the HARQ-ACK information may be carried in uplink control information on the second uplink resource, or may be carried in uplink data on the second uplink resource.

In the present application, HARQ-ACK information may have two modes: mode one, which may be referred to as Acknowledgement (ACK)/Negative Acknowledgement (NACK) feedback, HARQ-ACK information includes NACK and ACK. Illustratively, if the second terminal does not successfully receive the sidestream data, a NACK is sent to the network device. And if the second terminal successfully receives the sidestream data, sending ACK to the network equipment.

Mode two, which may be referred to as NACK only feedback, HARQ-ACK information includes NACK. Illustratively, if the second terminal does not successfully receive the sideline data, a NACK is sent to the network device. And if the second terminal successfully receives the sidestream data, the sidestream data is not fed back to the network equipment.

The HARQ-ACK information sent by the second terminal to the network device based on the transmission granularity of the data transmission between the first terminal and the second terminal and the feedback mode of the HARQ-ACK information may be as follows.

Example 1, in the ACK/NACK feedback based on TBs, for each TB, if the second terminal correctly receives the TB, the second terminal feeds back ACK to the network device, and if the second terminal does not correctly receive the TB, the second terminal feeds back NACK to the network device.

Example 2, based on the NACK only feedback of the TBs, for each TB, the second terminal does not feed back to the network device if the TB is correctly received, and feeds back NACK to the network device if the TB is not correctly received.

Example 3, in the ACK/NACK feedback based on the CBGs, for each CBG, if the second terminal correctly receives the CBG, the second terminal feeds back ACK to the network device, and if the second terminal does not correctly receive the CBG, the second terminal feeds back NACK to the network device.

Example 4, in the NACK only feedback based on the CBG, for each CBG, the second terminal does not feed back to the network device if the CBG is correctly received, and feeds back a NACK to the network device if the CBG is not correctly received.

In examples 1 to 4 above, the network device may determine whether to schedule the first terminal to retransmit to the second terminal according to the transmission granularity of data transmission between the first terminal and the second terminal and the feedback situation of the second terminal. As exemplified below:

in a specific example, in the case where the first terminal and the second terminal are based on TB transmission, the sidelink indication is used to schedule 2 TBs. Further, the second data consists of 2 TBs (denoted TB1 and TB2, respectively). The second terminal receives TB1 successfully from the first terminal but does not receive TB2 successfully from the first terminal. The second terminal may send ACK corresponding to TB1 and NACK corresponding to TB2 to the network device in ACK/NACK feedback; or the second terminal may send a NACK corresponding to TB2 to the network device in NACK only feedback.

For TB2, the network device receives a NACK for this TB2 from the second terminal, schedules the first terminal to retransmit TB2 to the second terminal, and schedules the second terminal to retransmit TB2 to the network device.

For TB1, the network device receives an ACK corresponding to TB1 from the second terminal in ACK/NACK feedback, or the network device does not receive a NACK corresponding to TB1 from the second terminal in NACK only feedback, then it is determined that the second terminal has successfully received TB1 from the first terminal. If the network device did not successfully receive this TB1 from the second terminal, the second terminal may be scheduled to retransmit TB1 to the network device.

In another specific example, in the case where the first terminal and the second terminal transmit based on CBG, the sidelink indication is used to schedule 1 TB. Further, the second data is 1 TB, which includes 2 CBGs (denoted CBG1, CBG2, respectively). The second terminal receives the CBG1 successfully from the first terminal, but does not receive the CBG2 successfully from the first terminal. The second terminal may send an ACK corresponding to the CBG1 and a NACK corresponding to the CBG2 to the network device in ACK/NACK feedback, or the second terminal may send a NACK corresponding to the CBG2 to the network device in NACK only feedback.

For CBG2, the network device receives a NACK for the CBG2 from the second terminal, schedules the first terminal to retransmit CBG2 to the second terminal, and schedules the second terminal to retransmit CBG2 to the network device.

For CBG1, the network device receives an ACK corresponding to the CBG1 from the second terminal in ACK/NACK feedback, or the network device does not receive a NACK corresponding to the CBG1 from the second terminal in NACK only feedback, then it is determined that the second terminal has successfully received the CBG1 from the first terminal. If the network device does not successfully receive the CBG1 from the second terminal, the second terminal may be scheduled to retransmit the CBG1 to the network device.

That is, in this embodiment of the application, if the network device does not receive all or part of the second data from the second terminal, how to schedule the first terminal and/or the second terminal to retransmit all or part of the second data may be determined according to a receiving state of the second terminal receiving the second data on the sidelink resource, so as to improve efficiency of terminal cooperative transmission.

Step 206, the network device sends a second uplink instruction to the first terminal.

Wherein the second uplink indication is used for indicating the position of the third uplink resource. Correspondingly, the first terminal receives a second uplink indication from the network device, and determines a third uplink resource according to the second uplink indication.

The second uplink indication occupies a second downlink resource, and the second downlink resource comprises a second downlink time domain resource and a second downlink frequency domain resource. In an optional implementation manner, the network device may send the second uplink indication to the first terminal before the first terminal sends the second data to the second terminal, that is, the position of the first downlink time domain resource is before the position of the sidelink time domain resource. In this way, in the communication system, control information (such as the first uplink indication, the second uplink indication, and the sidestream indication) is transmitted on the control plane, and data (such as the second data) is transmitted on the user plane, so that the control plane and the user plane are isolated, thereby effectively improving communication efficiency and ensuring communication stability.

Step 207, the first terminal sends the third data to the network device on the third uplink resource.

In this application, the sequence of step 203 and step 206 is not limited, and similarly, the sequence of step 205 and step 207 is not limited.

It should be added that the first uplink indication sent by the network device to the second terminal and the second uplink indication sent to the first terminal may be carried in the same signaling or may be carried in different signaling. Illustratively, the one or different signaling may be dynamically transmitted or semi-statically transmitted.

In an optional manner, the first uplink indication and the second uplink indication may be carried in the same signaling, where the signaling may be sent by the network device to the first terminal and the second terminal in a multicast manner, or sent to the first terminal in a unicast manner, and sent to the second terminal in a unicast manner.

Illustratively, the signaling includes two uplink indications, where the two uplink indications are a first uplink indication and a second uplink indication respectively, the first uplink indication is used by the second terminal to determine the first uplink resource, and the second uplink indication is used by the first terminal to determine the third uplink resource.

For another example, the signaling includes an uplink indication, which may be, for example, a first uplink indication or a second uplink indication, where the uplink indication is used by the second terminal to determine the first uplink resource and used by the first terminal to determine the third uplink resource.

Wherein the first uplink resource and the third uplink resource are the same or different.

In another optional manner, the first uplink indication and the second uplink indication may be carried in different signaling, which is equivalent to that the network device may send the first signaling to the second terminal in a unicast manner, where the first signaling includes the first uplink indication, and the first uplink indication is used by the second terminal to determine the first uplink resource. The network device may further send a second signaling to the first terminal in a unicast manner, where the second signaling includes a second uplink indication, and the second uplink indication is used for the first terminal to determine the third uplink resource. Wherein the first uplink resource and the third uplink resource are the same or different.

For example, the first uplink indication and the second uplink indication may be collectively referred to as an uplink indication, and the uplink indication may specifically be a Uu interface grant (Uu grant).

In addition, the present application does not exclude an implementation manner in which the sideline indicator and the second uplink indicator are carried in the same signaling, that is, the sideline indicator and the second uplink indicator are carried in the same signaling, or the sideline indicator, the first uplink indicator, and the second uplink indicator are carried in the same signaling.

It should be further noted that, after the network device determines that the position of the time domain resource in the third uplink resource is the position of the sideline time domain resource, in a specific implementation, after the first terminal sends the second data to the second terminal, the first terminal may send the third data to the network device, which is beneficial to ensuring that the network device receives the second data from the second terminal and receives the third data from the first terminal, so as to improve a success rate of determining the first data by the network device.

In the above technical solution, the first terminal sends a resource request to the network device, where the resource request is used to request a transmission resource of the first data. The network equipment determines a sidelink resource for transmitting second data and a first uplink resource for transmitting the second data according to the resource request, wherein the second data is all or part of the first data. The network equipment sends a sideline instruction for indicating the sideline resource to the first terminal, and sends a first uplink instruction for indicating the first uplink resource to the second terminal. The network device may allocate the first uplink resource to the second terminal without waiting for the first terminal to successfully send the second data to the second terminal. In the terminal cooperation transmission process, the method is beneficial to simplifying the interaction flow and reducing the scheduling time delay.

In addition, it is necessary to supplement that the second terminal can transmit the sidelink data received from the sidelink to the network device via the uplink only by associating the sidelink data with the uplink data in the uplink. The implementation of associating the uplink data with the sideline data by the second terminal is described as follows:

in an optional manner, the sidelink indicator includes a transmission identifier of a sidelink between the first terminal and the second terminal, and the first uplink indicator also includes the transmission identifier. After receiving the sideline direction, the first terminal carries the transmission identifier in the sideline direction control information together and sends the transmission identifier to the second terminal, that is, the second terminal can determine the transmission identifier for transmitting the second data with the first terminal. Further, the second terminal may determine, according to the transmission identifier in the first uplink indication, that the first uplink resource corresponding to the first uplink indication is used for transmitting the second data, and then send the second data to the network device via the first uplink resource.

Optionally, the first terminal may also associate the sidelink data in the sidelink with the uplink data in the uplink. The second uplink indication may also include the transmission identifier. And the first terminal determines a transmission identifier for transmitting second data with the second terminal after receiving the side row indication. Further, the second terminal determines, according to the transmission identifier in the second uplink indication, that a third uplink resource corresponding to the second uplink indication is used for transmitting the second data, and then sends the second data to the network device via the third uplink resource.

For example, the transmission identifier may specifically be an SLHARQ ID.

In another alternative, the first uplink indication may not include the transmission identifier, and the second terminal may send the sidelink data received from the sidelink at the latest time to the network device through the uplink. Correspondingly, the second uplink indication may not include the transmission identifier, and the first terminal may transmit, to the network device via the uplink, the sidelink data that is transmitted via the sidelink at the latest time.

It should be noted that the first terminal associates uplink data in the uplink and sidelink data in the sidelink, and is mainly applied to the case where the first data, the second data, and the third data are the same, that is, applied to scenario 2 in fig. 3.

Fig. 4 is a schematic flow chart of another data transmission method provided in the present application, in which:

step 401, a first terminal sends a resource request to a network device.

Step 402, the network device sends a sideline instruction to the first terminal. The side row indication is used to indicate side row resources.

Step 403, the network device sends uplink indications to the first terminal and the second terminal, respectively.

In one case, the uplink indication includes a first uplink indication and a second uplink indication, where the first uplink indication is used to indicate the first uplink resource and the second uplink resource, and the second uplink indication is used to indicate the third uplink resource.

In another case, the uplink indication is used to indicate the first uplink resource, the second uplink resource and the third uplink resource.

In step 404, the first terminal sends the second data to the second terminal on the sideline resource indicated by the network device.

Step 405, the second terminal sends the second data and/or HARQ ACK information to the network device. Specifically, the second terminal may send the second data to the network device on the first uplink resource, and/or the second terminal may send the HARQ ACK information to the network device on the second uplink resource.

Step 406, the first terminal sends third data to the network device on the third uplink resource.

The specific implementation manner of the above steps 401 to 406 can be referred to as described in the related embodiment of fig. 2.

The various embodiments described herein may be implemented as stand-alone solutions or combined in accordance with inherent logic, all of which are contemplated to fall within the scope of the present application.

It is to be understood that, in the foregoing method embodiments, the method and the operation implemented by the terminal may also be implemented by a component (e.g., a chip or a circuit) available for the terminal, and the method and the operation implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) available for the network device.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is introduced from the perspective of interaction between the devices. In order to implement the functions in the method provided by the embodiments of the present application, the terminal and the network device may include a hardware structure and/or a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure and a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.

The division of the modules in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional modules in the embodiments of the present application may be integrated into one processor, may exist alone physically, or may be integrated into one module by two or more modules. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

Based on the above and the same concept, fig. 5 and 6 are schematic structural diagrams of a possible communication device provided by the present application. These communication devices can be used to implement the functions of the network device, the first terminal, or the second terminal in the above method embodiments, so that the advantageous effects of the above method embodiments can also be achieved.

In the present application, the communication device may be the terminal 1 or the terminal 2 shown in fig. 1, may be a network device shown in fig. 1, and may also be a module (e.g., a chip) applied to the terminal or the network device.

As shown in fig. 5, the communication device includes a processing module 501 and a communication module 502, wherein the communication module 502 may further include a transmitting module 5021 and a receiving module 5022. The communication device is used for realizing the functions of the network equipment, the first terminal or the second terminal in the method embodiments.

When the communication device is used to implement the functions of the network device of the above method embodiments:

in a possible implementation manner, the processing module 501 is configured to control the receiving module 5022 to receive a resource request from the first terminal, where the resource request is used to request a transmission resource of the first data; the control transmitting module 5021 transmits a side row instruction to the first terminal, wherein the side row instruction is used for indicating side row resources, the side row resources are used for transmitting second data between the first terminal and the second terminal, and the second data is part or all of the first data; the control sending module 5021 sends a first uplink indication to the second terminal, where the first uplink indication is used to indicate a first uplink resource, and the first uplink resource is used for transmission of second data between the second terminal and the device.

In a possible implementation manner, the time domain resource in the first uplink resource is determined by the time domain resource in the sideline resource and the processing capability of the second terminal.

In a possible implementation manner, the first uplink indication is further used to indicate a second uplink resource, the second uplink resource is used for a hybrid automatic repeat request acknowledgement between the transmission apparatus and the second terminal, and the hybrid automatic repeat request acknowledgement is used to indicate a transmission state of the second data on the sidelink resource.

In a possible implementation manner, the processing module 501 is further configured to control the sending module 5021 to send a second uplink instruction to the first terminal, where the second uplink instruction is used to instruct a third uplink resource, the third uplink resource is used for transmission of third data between the first terminal and the apparatus, and the third data is part or all of the first data.

In a possible implementation manner, the sidelink indication includes identification information of sidelink transmission between the first terminal and the second terminal, and the second uplink indication includes identification information, where the identification information is used to associate data transmitted on the sidelink resource with data transmitted on the third uplink resource.

When the communication device is used to implement the functionality of the first terminal of the above method embodiment:

in a possible implementation manner, the processing module 501 is configured to control the sending module 5021 to send a resource request to the network device, where the resource request is used to request a transmission resource of the first data; the control receiving module 5022 receives a sideline indication from the network equipment, the sideline indication is used for indicating sideline resources, the sideline resources are used for transmitting second data between the device and the second terminal, and the second data is part or all of the first data.

In a possible implementation manner, the processing module 501 is configured to control the receiving module 5022 to receive a second uplink indication from the network device, where the second uplink indication is used to indicate a third uplink resource, and the third uplink resource is used for transmission of third data between the apparatus and the network device, and the third data is part or all of the first data.

In a possible implementation manner, the sidelink indication includes identification information of sidelink transmission between the apparatus and the second terminal, and the second uplink indication includes identification information, and the identification information is used for associating data transmitted on the sidelink resource with data transmitted on the third uplink resource.

In a possible implementation manner, the second uplink indication occupies the second downlink resource, and the position of the time domain resource in the second downlink resource is before the position of the time domain resource in the side line resource.

When the communication device is used to implement the functionality of the second terminal of the above method embodiment:

in a possible implementation manner, the processing module 501 is configured to control the receiving module 5022 to receive a first uplink indication from a network device, where the first uplink indication is used to indicate a first uplink resource; in a case that the receiving module 5022 successfully receives the second data from the first terminal on the sidestream resource, the transmitting module 5021 is controlled to transmit the second data to the network device on the first uplink resource.

In a possible implementation manner, the processing module 501 is further configured to control the receiving module 5022 to receive the sideline control information from the first terminal; the sidelink control information indicates identification information of sidelink transmission between the first terminal and the device, the first uplink indication comprises identification information, and the identification information is used for associating data transmitted on the first uplink resource and data transmitted on the sidelink resource.

In a possible implementation manner, the time domain resource in the first uplink resource is determined by the time domain resource in the sideline resource and the processing capability of the processing module 501.

In a possible implementation manner, the processing capability of the processing module 501 is used to indicate a first duration, where the first duration is a sum of a second duration and a third duration, the second duration is a duration for the processing module 501 to decode the data transmitted on the sideline resource to obtain second data, and the third duration is a duration for the processing module 501 to encode the second data to obtain data transmitted on the first uplink resource; the time length between the starting position of the time domain resource in the first uplink resource and the ending position of the time domain resource in the side row resource is greater than or equal to the first time length.

In a possible implementation manner, the first uplink indication is further configured to indicate a second uplink resource, and the processing module 501 is further configured to control the sending module 5021 to send a hybrid automatic repeat request acknowledgement to the network device on the second uplink resource, where the hybrid automatic repeat request acknowledgement is used to indicate a transmission state of the second data on the sideline resource.

As shown in fig. 6, which is a device 600 provided in the embodiment of the present application, the device shown in fig. 6 may be implemented as a hardware circuit of the device shown in fig. 5. The apparatus may be adapted to the flowcharts shown above, and implement the functions of the network device, or the first terminal, or the second terminal in the foregoing method embodiments.

For ease of illustration, fig. 6 shows only the main components of the device.

The apparatus 600 shown in fig. 6 comprises a communication interface 610, a processor 620 and a memory 630, wherein the memory 630 is used for storing program instructions and/or data. The processor 620 may operate in conjunction with the memory 630. Processor 620 may execute program instructions stored in memory 630. When the instructions or programs stored in the memory 630 are executed, the processor 620 is configured to perform the operations performed by the processing module 501 in the above embodiments, and the communication interface 610 is configured to perform the operations performed by the communication module 502 in the above embodiments.

The memory 630 is coupled to the processor 620. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be in an electrical, mechanical or other form, which is used for information interaction between the devices, units or modules. At least one of the memories 630 may be included in the processor 620.

In embodiments of the present application, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. In the embodiment of the present application, when the communication interface is a transceiver, the transceiver may include an independent receiver and an independent transmitter; a transceiver that integrates transceiving functions, or a communication interface may also be used.

Apparatus 600 may also include a communication line 640. Wherein the communication interface 610, the processor 620 and the memory 630 may be connected to each other through a communication line 640; the communication line 640 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication line 640 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus. It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of the present application. The sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic.

Based on the foregoing and similar concepts, an embodiment of the present application provides a chip system, including: a processor coupled to a memory, the memory being configured to store a program or instructions, which when executed by the processor, cause the system-on-chip to implement the functions of the network device, or the first terminal, or the second terminal in the above method embodiments.

The system-on-chip may include an interface circuit to interface code instructions to the processor.

It should be understood that the number of processors in the system on chip may be one or more, and the processor may be implemented by hardware or software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory.

It should be understood that the memory in the system on chip may also be one or more. The memory may be integral to the processor or may be separate from the processor. Illustratively, the memory may be a non-transitory processor, such as a read only memory ROM, which may be integrated on the same chip as the processor or may be separately provided on different chips.

Based on the above and the same conception, the embodiments of the present application provide a computer-readable storage medium, on which a computer program or instructions are stored, which, when implemented, cause a computer to implement the functions of the network device, or the first terminal, or the second terminal in the above method embodiments.

Based on the above and the same conception, the embodiments of the present application provide a computer program product, which when read and implemented by a computer, causes the computer to implement the functions of the network device, or the first terminal, or the second terminal in the above method embodiments.

Based on the above and the same conception, embodiments of the present application provide a communication system, which may include the first terminal, the second terminal, and the network device in the above method embodiments, and may also include other communication devices, which is not limited in the present application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method of data transmission, comprising:

the network equipment receives a resource request from a first terminal, wherein the resource request is used for requesting transmission resources of first data;

the network equipment sends a sideline indication to the first terminal, wherein the sideline indication is used for indicating a sideline resource, the sideline resource is used for transmission of second data between the first terminal and the second terminal, and the second data is part or all of the first data;

the network device sends a first uplink indication to a second terminal, where the first uplink indication is used to indicate a first uplink resource, and the first uplink resource is used for transmission of the second data between the second terminal and the network device.

2. The method of claim 1, wherein the first uplink indication occupies a first downlink resource, a location of a time domain resource in the first downlink resource preceding a location of a time domain resource in the side row resource.

3. The method of claim 1, wherein the sidelink indication comprises identification information for a sidelink transmission between the first terminal and the second terminal, and wherein the identification information is included in the first uplink indication and is used to associate data transmitted on the first uplink resource with data transmitted on the sidelink resource.

4. The method of claim 1, wherein the time domain resource in the first uplink resource is determined by the time domain resource in the sidelink resource and a processing capability of the second terminal.

5. The method of claim 4, wherein the processing capability of the second terminal is used to indicate a first duration, wherein the first duration is a sum of a second duration and a third duration, wherein the second duration is a duration for the second terminal to decode the data transmitted on the sidelink resource to obtain the second data, and wherein the third duration is a duration for the second terminal to encode the second data to obtain the data transmitted on the first uplink resource;

the time length between the starting position of the time domain resource in the first uplink resource and the ending position of the time domain resource in the side row resource is greater than or equal to the first time length.

6. The method of claim 1, wherein the first uplink indication is further used for indicating a second uplink resource for transmitting a hybrid automatic repeat request acknowledgement between the network device and the second terminal, the hybrid automatic repeat request acknowledgement being used for indicating a transmission status of the second data on the sidelink resource.

7. The method of any of claims 1 to 6, further comprising:

the network device sends a second uplink indication to the first terminal, where the second uplink indication is used to indicate a third uplink resource, the third uplink resource is used for transmission of third data between the first terminal and the network device, and the third data is part or all of the first data.

8. The method of claim 7, wherein the second uplink indication occupies a second downlink resource, and wherein a position of the time domain resource in the second downlink resource is before a position of the time domain resource in the sidelink resource.

9. The method of claim 7, wherein the sidelink indication comprises identification information for a sidelink transmission between the first terminal and the second terminal, and wherein the identification information is included in the second uplink indication and is used to associate data transmitted on the sidelink resource with data transmitted on the third uplink resource.

10. A method of data transmission, comprising:

a first terminal sends a resource request to network equipment, wherein the resource request is used for requesting transmission resources of first data;

the first terminal receives a sidestream indication from the network device, where the sidestream indication is used to indicate sidestream resources used for transmission of second data between the first terminal and the second terminal, and the second data is part or all of the first data.

11. The method of claim 10, further comprising:

the first terminal receives a second uplink indication from the network device, where the second uplink indication is used to indicate a third uplink resource, the third uplink resource is used for transmission of third data between the first terminal and the network device, and the third data is part or all of the first data.

12. The method of claim 11, wherein the sidelink indication comprises identification information for sidelink transmissions between the first terminal and the second terminal, and wherein the identification information is included in the second uplink indication and is used to associate data transmitted on the sidelink resources with data transmitted on the third uplink resource.

13. The method according to claim 11 or 12, wherein the second uplink indication occupies a second downlink resource, and a position of a time domain resource in the second downlink resource is before a position of a time domain resource in the side line resource.

14. A method of data transmission, comprising:

a second terminal receives a first uplink indication from network equipment, wherein the first uplink indication is used for indicating first uplink resources;

and the second terminal sends the second data to the network equipment on the first uplink resource under the condition that the second terminal successfully receives the second data from the first terminal on the sidestream resource.

15. The method of claim 14, wherein the first uplink indication occupies a first downlink resource whose position in a time domain resource in the first downlink resource precedes the position in a time domain resource in the side row resource.

16. The method of claim 14, wherein the method further comprises:

the second terminal receives the lateral control information from the first terminal;

the sidelink control information indicates identification information of sidelink transmission between the first terminal and the second terminal, the first uplink indication includes the identification information, and the identification information is used for associating data transmitted on the first uplink resource with data transmitted on the sidelink resource.

17. The method of claim 14, wherein the time domain resource in the first uplink resource is determined by the time domain resource in the sidelink resource and a processing capability of the second terminal.

18. The method of claim 17, wherein the processing capability of the second terminal is used to indicate a first duration, wherein the first duration is a sum of a second duration and a third duration, wherein the second duration is a duration during which the second terminal decodes the data transmitted on the sidelink resource to obtain the second data, and wherein the third duration is a duration during which the second terminal encodes the second data to obtain the data transmitted on the first uplink resource;

and the time length between the initial position of the time domain resource in the first uplink resource and the end position of the time domain resource in the side line resource is greater than or equal to the first time length.

19. The method according to any of claims 14 to 18, wherein the first uplink indication is further used for indicating a second uplink resource, the method further comprising:

and the second terminal sends a hybrid automatic repeat request acknowledgement to the network equipment on the second uplink resource, wherein the hybrid automatic repeat request acknowledgement is used for indicating the transmission state of the second data on the sidestream resource.

20. A communications device comprising means for performing the method of any of claims 1 to 9, or any of claims 10 to 13, or any of claims 14 to 19.

21. A communications device comprising a processor and a communications interface for receiving and transmitting signals from or sending signals to other communications devices than the communications device, the processor being operable by logic circuitry or executing code instructions to implement a method as claimed in any one of claims 1 to 9, or any one of claims 10 to 13, or any one of claims 14 to 19.

22. A computer-readable storage medium, having stored thereon a computer program or instructions which, when executed by a communication apparatus, carry out the method of any of claims 1 to 9, or any of claims 10 to 13, or any of claims 14 to 19.

23. A chip comprising at least one processor and an interface;

the interface is used for providing program instructions or data for the at least one processor;

the at least one processor is configured to execute the program line instructions to implement the method of any one of claims 1 to 9, or any one of claims 10 to 13, or any one of claims 14 to 19.

24. A communication system comprising a network device configured to perform the method of any of claims 1 to 9, a first terminal configured to perform the method of any of claims 10 to 13, and a second terminal configured to perform the method of any of claims 14 to 19.