WO2022140996A1

WO2022140996A1 - Channel access method and communication device

Info

Publication number: WO2022140996A1
Application number: PCT/CN2020/140402
Authority: WO
Inventors: 酉春华; 赵力
Original assignee: 华为技术有限公司
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2022-07-07

Abstract

Disclosed in the present application are a channel access method and a communication device, the method comprising: a network device sending first information to a terminal device, and indicating to the terminal device by means of the first information a first channel access type corresponding to a configured grant (CG) resource. Then, the terminal device performs a first channel access procedure corresponding to the first channel access type, and if the first channel access process is successful, the terminal device sends first uplink information to the network device on the CG resource. In the described technical solution, the terminal device performs channel access on the basis of a channel access type indicated by the network device, allowing the terminal device to obtain a more accurate channel state in the channel access process, and prevents hidden nodes from causing interference with CG transmission, thereby improving the success rate of CG transmission and improving spectrum utilization.

Description

A channel access method and communication device

technical field

The present application relates to the field of wireless communication technologies, and in particular, to a channel access method and a communication device.

Background technique

Any device can use unlicensed spectrum resources for transmission. In order to avoid mutual interference between transmissions of different devices, the device needs to perform channel detection before transmitting, and determine the channel status (available or unavailable) according to the channel detection result (idle or busy). ). If the channel detection result is idle, it means that the channel status is available and the device can transmit, otherwise it cannot transmit. This process is called the channel access process, also known as listen before talk (LBT).

In a new radio (NR) system, a network device can pre-allocate a configured grant (CG) resource to a terminal device, and then the terminal device performs channel access before CG transmission. In the prior art, the channel access process performed by the terminal device is not assisted by the network device. After the channel access process is completed (that is, the channel state is available), the terminal device directly performs CG transmission, regardless of whether there is a network device nearby. Hidden nodes (ie other devices currently occupying the same channel resources that are not detected by the terminal device). However, if there is a hidden node near the network device, the channel state obtained by the terminal device for channel access may be inaccurate, and the CG transmission may be affected by the hidden node this time, resulting in transmission failure.

SUMMARY OF THE INVENTION

The present application provides a channel access method and a communication device to solve the problem that CG transmission may be interfered by hidden nodes, thereby improving the success rate of CG transmission and making full use of unlicensed spectrum resources.

In a first aspect, the present application provides a channel access method, which can be performed by a terminal device or by a component (for example, a chip or a circuit) configured in the terminal device.

The method includes: the terminal device receives first information from the network device, where the first information is used to indicate the first channel access type corresponding to the configuration authorized CG resource; the terminal device performs the first channel access type corresponding to the first channel access type access process; if the first channel access process is successful, the terminal device sends the first uplink information to the network device on the CG resource.

In the above technical solution, by indicating the first channel access type corresponding to the CG resource to the terminal device, the network device can enable the terminal device to know the first channel access type corresponding to the CG resource, and then perform corresponding processing according to the first channel access type. In the channel access process, after the channel access process is completed, uplink transmission is performed on the CG resource. The method enables the terminal device to obtain a more accurate channel state during the channel access process, thereby effectively improving the success rate of CG transmission and making full use of unlicensed spectrum resources.

In a possible design, the first information is used to indicate the first channel access type corresponding to the CG resource, including: the first information includes a channel access type indication, and the channel access type indication is used to indicate the first channel Access type.

In a possible design, if the first channel access type is a receiver-assisted channel access type; the method further includes: the terminal device determines the first resource and the second resource; wherein the first resource is used for the terminal device The channel detection result of the terminal device is sent to the network device during the channel access process, or the channel detection result of the network device is requested from the network device; the second resource is used for the terminal device to receive the channel detection result of the network device during the channel access process.

In a possible design, the first information is used to indicate the first channel access type corresponding to the CG resource, including: if the first information indicates the first resource and the second resource, the first channel access type is the receiver Auxiliary channel access type; wherein, the first resource is used for the terminal device to send the channel detection result of the terminal device to the network device during the channel access process, or to request the network device for the channel detection result of the network device; the second resource is used for The terminal device receives the channel detection result of the network device during the channel access process.

In a possible design, the method further includes: if the first channel access process fails, the terminal device sends channel access failure information to the network device, where the channel access failure information includes the first failure information and/or the second failure information Failure information, the first failure information is used to indicate that the terminal device fails to receive the channel detection result of the network device, and the second failure information is used to indicate that the terminal device fails to send the channel detection result of the terminal device.

In the above technical solution, if the channel access process of the terminal device fails, the terminal device can report channel access failure information to the network device, so that the network device can optimize the channel access configuration or CG configuration of the terminal device.

In a possible design, before the terminal device receives the first information from the network device, the method further includes: the terminal device receives second information from the network device, where the second information is used to indicate the initial channel connection corresponding to the CG resource. input type.

In a possible design, the method further includes: the terminal device sends feedback information to the network device, where the feedback information is used to confirm that the CG resource corresponds to the first channel access type.

In a possible design, the method further includes: the terminal device receives third information from the network device, where the third information is used to deactivate the first channel access type corresponding to the CG resource; the terminal device performs initial channel access The second channel access process corresponding to the type; after the second channel access process is successful, the terminal device sends the second uplink information to the network device on the CG resource.

In the above technical solution, the network device may pre-configure the terminal device with the initial channel access type corresponding to the CG resource, and then flexibly activate and deactivate the first channel corresponding to the CG resource through signaling as needed (eg, changes in hidden nodes). access type, thereby effectively improving the success rate of CG transmission.

In a second aspect, the present application provides a channel access method, which can be performed by a network device or by a component (eg, a chip or a circuit) configured in the network device.

The method includes: the network device sends first information to the terminal device, where the first information is used to indicate the first channel access type corresponding to the configuration authorized CG resource; if the first channel access process performed by the terminal device is successful, the network device is in the The first uplink information from the terminal device is received on the CG resource.

In a possible design, when there is a hidden node for the terminal device, the first channel access type is a receiver-assisted channel access type.

In a possible design, the method further includes: if the first channel access process performed by the terminal device fails, the network device receives channel access failure information from the terminal device, where the channel access failure information includes the first failure information and/or second failure information, the first failure information is used to indicate that the terminal device fails to receive the channel detection result of the network device, and the second failure information is used to indicate that the terminal device fails to send the channel detection result of the terminal device; Access failure information, optimize the channel access configuration or CG configuration of the terminal device.

In a possible design, before the network device sends the first information to the terminal device, the method further includes: the network device sends second information to the terminal device, where the second information is used to indicate the initial channel access type corresponding to the CG resource .

In a possible design, the method further includes: the network device receives feedback information from the terminal device, where the feedback information is used to confirm the first channel access type corresponding to the activated CG resource.

In a possible design, the method further includes: the network device sends third information to the terminal device, where the third information is used to deactivate the first channel access type corresponding to the CG resource; if the second channel access type performed by the terminal device The access process is successful, and the network device receives the second uplink information from the terminal device on the CG resource.

For the second aspect and the beneficial effects in various possible designs of the second aspect, reference may be made to the corresponding description in the first aspect, and details are not repeated here.

In a third aspect, an embodiment of the present application provides a communication device, the communication device has the functions of implementing the terminal equipment in the above aspects, and the communication device may be a terminal device or a chip included in the terminal device.

The communication device may also have the function of implementing the network device in the above aspects, and the communication device may be a network device or a chip included in the network device.

The functions of the above communication apparatus may be implemented by hardware, or by executing corresponding software in hardware, and the hardware or software includes one or more modules or units or means corresponding to the above functions.

In a possible design, the structure of the communication apparatus includes a processing module and a transceiver module, wherein the processing module is configured to support the apparatus to perform the corresponding functions of the terminal equipment in the above aspects, or perform the network equipment in the above aspects. corresponding function. The transceiver module is used to support communication between the communication device and other communication devices, for example, when the communication device is a terminal device, it can receive the first information from the network device. The communication device may further include a storage module, which is coupled with the processing module and stores necessary program instructions and data of the communication device. As an example, the processing module may be a processor, the communication module may be a transceiver, and the storage module may be a memory, and the memory may be integrated with the processor, or may be provided separately from the processor.

In another possible design, the structure of the communication device includes a processor, and may also include a memory. The processor is coupled to the memory and operable to execute computer program instructions stored in the memory to cause the communication apparatus to perform the methods of the above-described aspects. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface. When the communication device is a terminal device or a network device, the communication interface can be a transceiver or an input/output interface; when the communication device is a chip included in the terminal device or a chip included in the network device, the communication interface can be a chip input/output interface. Optionally, the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.

In a fourth aspect, an embodiment of the present application provides a chip system, including: a processor, where the processor is coupled to a memory, and the memory is used to store a program or an instruction, when the program or instruction is executed by the processor , so that the chip system implements the methods in the above aspects.

Optionally, the chip system further includes an interface circuit, and the interface circuit is used to exchange code instructions to the processor.

Optionally, there may be one or more processors in the chip system, 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 codes stored in memory.

Optionally, there may also be one or more memories in the chip system. The memory can be integrated with the processor, or can be provided separately from the processor. Exemplarily, the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be provided on different chips.

In a fifth aspect, the embodiments of the present application provide a computer-readable storage medium on which a computer program or instruction is stored, and when the computer program or instruction is executed, the communication device is made to perform the above aspects or any one of the aspects. possible design methods.

In a sixth aspect, an embodiment of the present application provides a computer program product that, when a communication device executes the computer program product, causes the communication device to execute the above aspects or the methods in any possible designs of the various aspects.

In a seventh aspect, an embodiment of the present application provides a communication system, where the communication system includes a network device and at least one terminal device. Optionally, the communication system may further include core network equipment.

Description of drawings

FIG. 1 is a schematic diagram of a network architecture of a communication system to which an embodiment of the application is applicable;

FIG. 2 is a schematic flowchart of a channel access method provided by an embodiment of the present application;

3 is a schematic diagram of a first resource and a second resource in an embodiment of the present application;

FIG. 4 is another specific example of a channel access method provided by an embodiment of the present application;

FIG. 5 , FIG. 6 , and FIG. 7 are schematic structural diagrams of a communication device according to an embodiment of the present application.

Detailed ways

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), fifth generation (5th generation, 5G) mobile communication systems or new radio (NR) systems, or applied to future communication systems or other similar communication systems.

Please refer to FIG. 1 , which is a schematic diagram of a network architecture of a communication system provided by the present application. The communication system includes a core network device 110, a radio access network device 120 and at least one terminal device (such as the terminal device 130 and the terminal device 140 in FIG. 1). The terminal equipment is wirelessly connected to the wireless access network equipment, and the wireless access network equipment is wirelessly or wiredly connected to the core network equipment. The core network device and the radio access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the radio access network device can be integrated on the same physical device, or they can be one physical device. It integrates the functions of some core network equipment and some functions of the wireless access network equipment. Terminal equipment can be fixed or movable. FIG. 1 is only a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 .

The embodiments of the present application do not limit the number of core network devices, wireless access network devices, terminal devices, and other network devices included in the communication system.

The radio access network devices in the embodiments of the present application may correspond to different devices in communication systems of different types or standards. For example, in the 5G system, they correspond to the access network devices in 5G, such as gNB or ng-eNB, and in the 4G system Corresponds to access network equipment in 4G, such as eNB or en-gNB.

The radio access network device and the terminal device can communicate through licensed spectrum, communicate through unlicensed spectrum, or communicate through licensed spectrum and unlicensed spectrum at the same time. The wireless access network equipment and the terminal equipment can communicate through the frequency spectrum below 6 GHz (gigahertz, GHz), and can also communicate through the frequency spectrum above 6 GHz, and can also use the frequency spectrum below 6 GHz and the frequency spectrum above 6 GHz at the same time. communication. This embodiment of the present application does not limit the spectrum resources used between the network device and the terminal device.

The radio access network equipment and terminal equipment in the embodiments of the present application can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed on aircraft, balloons, and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

It should be noted that the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. It can be seen that, with the evolution of the communication network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

Some terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

1) The terminal device involved in the embodiments of this application is a device with a wireless transceiver function. The terminal equipment is wirelessly connected to the wireless access network equipment, so as to be connected to the communication system. A terminal device may also be referred to as a terminal, user equipment (UE), a mobile station, a mobile terminal, and the like. The terminal equipment can be mobile phone, tablet computer, computer with wireless transceiver function, virtual reality terminal equipment, augmented reality terminal equipment, wireless terminal in industrial control, wireless terminal in unmanned driving, wireless terminal in remote surgery, smart grid wireless terminals in transportation security, wireless terminals in smart cities, wireless terminals in smart homes, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

As an example and not a limitation, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. Wait. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

The terminal device may also be an on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units, and the vehicle passes the built-in on-board module, on-board module, on-board component, on-board chip or on-board unit. A unit may implement the methods of the present application.

2) The wireless access network device involved in the embodiments of the present application is a device in the network for connecting a terminal device to a wireless network device. A radio access network device is a node in the radio access network, and may also be called a base station, and may also be called a RAN node (or device). In this application, wireless access network equipment may be referred to as access network equipment or network equipment for short. Unless otherwise specified, the following access network equipment or network equipment refers to wireless access network equipment.

The radio access network equipment may be a base station (base station), an evolved base station (evolved NodeB, eNodeB) in an LTE system or an evolved LTE system (LTE-Advanced, LTE-A), a next-generation base station ( next generation NodeB (gNB), transmission reception point (TRP), base band unit (BBU), WiFi access point (AP), base station in future mobile communication system or WiFi system access node, etc. The radio access network device may also be a module or unit that completes some functions of the base station, for example, may be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device.

For example, in a network structure, the radio access network device may be a CU node, a DU node, or an access network device including a CU node and a DU node. Among them, the CU node can support radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP), service data adaptation protocol (service data adaptation protocol, SDAP) functions; DU nodes can support Functions of radio link control (radio link control, RLC) layer protocol, medium access control (medium access control, MAC) layer protocol and physical layer protocol.

It should be noted that the terms "system" and "network" in the embodiments of the present application may be used interchangeably. "Plurality" refers to two or more than two, and in view of this, "plurality" may also be understood as "at least two" in the embodiments of the present application. "At least one" can be understood as one or more, such as one, two or more. For example, including at least one means including one, two or more, and does not limit which ones are included. For example, if at least one of A, B, and C is included, then A, B, C, A and B, A and C, B and C, or A and B and C may be included. Similarly, the understanding of descriptions such as "at least one" is similar. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/", unless otherwise specified, generally indicates that the related objects are an "or" relationship.

Unless stated to the contrary, ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority, or importance of multiple objects. Moreover, the description of "first" and "second" does not limit the objects to be necessarily different.

The related technical features involved in the embodiments of the present application are explained below.

1. Configure authorized CG

There are two ways of uplink scheduling: dynamic scheduling and non-dynamic scheduling. Non-dynamic scheduling may also be called configuration scheduling. In the dynamic scheduling scenario, for each uplink transmission, the access network device needs to indicate the uplink resource of the transmission to the terminal device through downlink control information (DCI). In a non-dynamic scheduling scenario, the access network device may pre-configure the terminal device with CG resources that can be used for multiple transmissions, and the terminal device may perform uplink transmission on the CG resources.

Further, the CG resource may include two types, namely type 1 (type 1) and type 2 (type 2). For type 1 CG resources, the access network device may send configuration information of the CG (eg configuredGrantConfig) to the terminal device, and the configuration information of the CG may include the period of the resource, the time domain location and the frequency domain location of the resource. Optionally, the configuration information of the CG may also include a modulation and coding scheme (modulation and coding scheme, MCS) corresponding to the resource. In this way, when the terminal device uses the resource for uplink transmission, the MCS corresponding to the resource may be used. Code and modulate the data transmitted upstream. Optionally, the configuration information of the CG may also include one or more of the following parameters: open-loop power control related parameters, waveform, redundancy version, redundancy version sequence, repetition times, frequency hopping mode, resource allocation type, Number of hybrid automatic repeat request (HARQ) processes, parameters related to demodulation reference signal (DMRS), and resource block group (RBG) size.

For type 2 CG resources, the access network device may send configuration information of the CG to the terminal device, and the configuration information of the CG may include the period of the resource. Optionally, the configuration information of the CG may also include one or more of the following parameters: open-loop power control related parameters, waveform, redundancy version, redundancy version sequence, repetition times, frequency hopping mode, resource allocation type, DMRS related parameters and the number of HARQ processes. Further, the access network device may also send DCI to the terminal device to activate the resource. Optionally, the DCI may include one or more of the following parameters: the time domain location of the resource, the frequency domain location of the resource, and the MCS corresponding to the resource.

Exemplarily, for the above-mentioned type 1 or type 2 CG resources, the configuration information of the CG is encapsulated in an RRC message, and the access network device may send an RRC message including the configuration information of the CG to the terminal device, notifying the terminal device of the configuration information for it. CG resources. In addition, the configuration information of the CG may also include other possible information, such as the identification information of the CG, which is not specifically limited.

Understandably, the CG resources in the RRC connected state are all dedicated CG resources, that is, the CG resources are dedicated to a certain terminal device. The CG resources in the RRC inactive state may be dedicated CG resources or shared CG resources, that is, the CG resources may be dedicated to a terminal device or shared by multiple terminal devices.

In addition, considering that the terminal device may have multiple services, the arrival time, arrival period, and data packet size of different services may be different. Therefore, the access network device may configure multiple CG resources for the terminal device.

2. Channel access type

According to whether the channel access process performed by the terminal equipment is assisted by network equipment, the channel access types can be divided into two types: non-receiver-assisted channel access types and receiver-assisted channel access types. In this embodiment of the present application, the non-receiver-assisted channel access type, that is, the channel access type or the without received-assisted LBT type, may also be referred to as a common channel access type or a channel access type without receiver assistance or with Other names are not limited. Receiver-assisted channel access type, that is, channel access with receiver-assisted or received-assisted LBT type.

The channel access type assisted by the receiver means that in the channel access process, the sender first determines the channel detection result (idle or busy) of the sender. Then, if the channel detection result determined by the sender is idle, the sender sends indication information to the receiver, and the indication information is used to trigger the receiver to obtain the channel detection result (idle or busy) of the receiver. For example, the indication information can be specifically used for Indicates that the channel detection result of the sender is idle, or is used to request the receiver's channel detection result from the receiver. After receiving the indication information, the receiver obtains the channel detection result of the receiver according to the indication information, and sends the channel detection result of the receiver to the sender. Then, the sender determines the first channel state (available or unavailable) according to the channel detection result of the sender and the channel detection result of the receiver. If the channel detection result of the sender is idle, and the channel detection result of the receiver is idle, then the first channel state is available; otherwise, the first channel state is unavailable. When the first channel state is available, the sender can send data to the receiver; otherwise, data cannot be sent.

The non-receiver-assisted channel access type means that in the channel access process, the sender determines the sender's channel detection result (idle or busy), and then the sender determines the first channel state ( available or not). If the channel detection result of the sender is idle, the first channel state is available; otherwise, the first channel state is unavailable. If the first channel state is available, the sender can send data to the receiver; otherwise, data cannot be sent.

Exemplarily, the sender or the receiver may determine the channel detection result according to the received signal strength. When the received signal strength in a detection time slot is higher than or equal to the channel access threshold, the channel detection result of the detection time slot is determined to be busy. When the received signal strength in a detection time slot is lower than the channel access threshold, it is determined that the channel detection result of the detection time slot is idle. The sender needs to send the indication information to the receiver after determining that the channel detection results of one or more detection time slots are idle.

In the channel access process corresponding to the receiver-assisted channel access type or the non-receiver-assisted channel access type described above, the first channel state refers to the result information of the channel access process or LBT, and the result information Used to indicate whether the channel access process succeeds or fails. Understandably, when the first channel state is available, it means that the channel access process is successful; when the first channel state is unavailable, it means that the channel access process fails. If the channel access process is successful, the result information may also include channel occupancy time (channel occupancy time), and the channel occupancy time refers to the length of time that the sender is allowed to occupy the channel after the channel access process is completed.

It should be understood that in a scenario where the terminal device uses CG resources for uplink transmission, the sender may refer to the terminal device, and the receiver may refer to the network device.

As mentioned above, before the terminal device performs uplink transmission on the CG resource, it will first perform a channel access process. However, if the non-receiver-assisted channel access procedure is performed, there is a problem that the terminal device cannot know the existence of the hidden node. Among them, a hidden node refers to a device (or called a channel resource competitor) that cannot be detected by a terminal device when determining its own channel detection result due to the distance or other reasons. The hidden node can be other terminal devices or Other network devices or other types of communication devices are not limited.

Analysis shows that if there is a hidden node, but the terminal device does not detect the existence of the hidden node, the channel state determined by the terminal device through the channel access process is inaccurate. That is, the terminal device believes that the current channel detection result is idle and the channel state is available, but in fact the channel is busy (it can be understood that the hidden node is using the channel resources), and the channel state is unavailable, which leads to the terminal When the device performs uplink transmission on CG resources, it will be interfered by hidden nodes, so that the network device cannot correctly receive data from the terminal device, resulting in transmission failure.

In the prior art, if the terminal device performs the non-receiver-assisted channel access process before performing the uplink transmission on the CG resource, the terminal device cannot know the existence of the hidden node, and the CG transmission performed by the terminal device may be affected by To hide the interference of nodes and cause transmission failure, an embodiment of the present application provides a channel access method, in which the first channel access type corresponding to the CG resource is indicated to the terminal device through the network device, so that the terminal device can access the CG resource on the CG resource. Before CG transmission is performed, a corresponding channel access process is performed according to the first channel access type, so that a more accurate channel state can be determined, the success rate of CG transmission can be effectively improved, and unlicensed frequency resources can be fully utilized.

Please refer to FIG. 2 , which is a schematic flowchart of a channel access method provided by an embodiment of the present application. The method includes:

Step S201: The network device sends first information to the terminal device, where the first information is used to indicate the first channel access type corresponding to the CG resource.

Correspondingly, the terminal device receives the first information from the network device.

In this embodiment of the present application, the first channel access type may be a receiver-assisted channel access type or a non-receiver-assisted channel access type.

In a possible implementation manner (hereinafter referred to as implementation manner 1), the first information may be configuration information of a CG, and the configuration information of the CG is used to configure a CG resource. The CG resource may be a type 1 or a type 2 CG resource, which is not limited. For the type 1 CG resource, the specific location of the CG resource is provided by the configuration information of the CG, including the time domain resource location, the frequency domain resource location, and the period of the CG resource. For type 2 CG resources, the specific location of the CG resource is provided by the DCI used to activate the CG resource, including the time domain resource location and frequency domain resource location of the CG resource, and the period of the CG resource is determined by the CG resource. configuration information is provided. The configuration information of the CG may be sent by the network device through an RRC message, that is, the network device sends an RRC message to the terminal device, and the RRC message includes the configuration information of the CG.

In the first embodiment, a possible way for the first information to indicate the first channel access type corresponding to the CG resource is: the first information (ie the configuration information of the CG) includes a channel access type indication, the channel access type The access type indication is used to indicate the access type of the first channel. The channel access type indication can be understood as the indication information included in the configuration information of the CG that is specifically used to indicate the channel access type, which is used to explicitly indicate the channel access type corresponding to the CG resource to the terminal device, such as the channel access type. The indication may be a separate field or field in the configuration information of the CG, and different values of the field or field represent different channel access types. Exemplarily, the channel access type indication may be indication information occupying 1 bit in the configuration information of the CG. When the bit value is 1, it indicates the receiver-assisted channel access type, and when the bit value is 0, it indicates the non-receiver. Secondary channel access type.

Further, if the first channel access type is a receiver-assisted channel access type, the terminal device may also determine the first resource and the second resource, where the first resource and the second resource are used for the terminal device to perform channel access. Resources. Specifically, the first resource is used by the terminal device to send the channel detection result of the terminal device to the network device during the channel access process, or used to request the network device for the channel detection result of the network device; the second resource is used by the terminal device when the The channel detection result of the network device is received during the channel access process.

Optionally, the resource locations of the first resource and the second resource may be indicated by the network device through the configuration information of the CG. That is, the configuration information of the CG may include information used to indicate the first resource and the second resource. In this way, after receiving the configuration information of the CG, the terminal device may use the information included in the configuration information of the CG to indicate the first resource and the second resource. information about the second resource, determine the first resource and the second resource, and then perform the channel access process corresponding to the channel access type assisted by the receiver. Understandably, when the first channel access type is the receiver-assisted channel access type, the configuration information in the CG carries the information used to indicate the first resource and the second resource, so that the network device can be The signaling carries the configuration information of the CG and the configuration information of the resources used for channel access (ie, the first resource and the second resource), and no additional signaling is required to indicate the configuration information of the resources used for the channel access, so that Signaling overhead is reduced.

Optionally, the resource locations of the first resource and the second resource may also be predetermined in the protocol. For example, the first resource is located in the x th symbol in a time slot, the second resource is located in the y th symbol in a time slot, and the values of x and y are predetermined by the protocol. In this way, before performing the channel access process corresponding to the channel access type assisted by the receiver, the terminal device may determine the first resource and the second resource according to a predetermined rule. The resource locations of the first resource and the second resource are implicitly indicated to the terminal device in a manner pre-specified in the protocol, so that the network device does not need to carry the information used to indicate the first resource and the second resource in the configuration information of the CG. The bit overhead in the configuration information of the CG can be effectively saved.

FIG. 3 exemplarily shows the first resource and the second resource in the embodiment of the present application. As shown in FIG. 3 , the first resource, the second resource and the CG resource are on consecutive symbols in a time slot, and the CG resource It can be used to carry uplink data of terminal equipment. For example, a slot includes 14 symbols, which are symbol 0 to symbol 13, respectively, then the first resource can be on symbol 0, the second resource can be on symbol 1, and the CG resource can be on symbol 2 to symbol 13.

In the above Embodiment 1, another possible way for the first information to indicate the first channel access type corresponding to the CG resource is: the first information implicitly indicates the first channel access type corresponding to the CG resource. Specifically, if the first information indicates the first resource and the second resource (that is, if the configuration information of the CG includes information for indicating the first resource and the second resource), the first channel access type is receiver-assisted Channel access type, otherwise, the first channel access type is a non-receiver-assisted channel access type.

Because the first resource and the second resource are used in the channel access process corresponding to the channel access type assisted by the receiver, the above-mentioned first resource and the second resource are not used in the channel access process corresponding to the channel access type not assisted by the receiver. The first resource and the second resource, therefore, the network device can implicitly indicate to the terminal device the channel access type corresponding to the CG resource by whether to carry the information used to indicate the first resource and the second resource in the configuration information of the CG Whether it is the receiver-assisted channel access type. Correspondingly, the terminal device can determine whether the first channel access type is a receiver-assisted channel access type according to whether the configuration information of the network device in the CG includes information for indicating the first resource and the second resource.

It can be understood that in the first embodiment, the first information can also be understood as the channel access type indication included in the configuration information of the CG (that is, the indication information used to indicate the channel access type), or the configuration of the CG Information included in the information to indicate the first resource and the second resource.

In another possible implementation manner (hereinafter referred to as implementation manner 2), the first information may be another information that is different from the configuration information of the CG sent by the network device to the terminal device, and the first information is configured in the CG information is sent later. Optionally, the first information and the configuration information of the CG may be carried by the network device and sent in different RRC messages, that is, the network device may first send the RRC message carrying the configuration information of the CG to the terminal device, and then send it to the terminal device. An RRC message carrying the first information.

In the second embodiment, a possible way for the first information to indicate the first channel access type is: to explicitly indicate the first channel access type by carrying the channel access type indication in the first information. The access type indication may be a piece of indication information in the first information that is specifically used to indicate the channel access type, and may be, for example, a separate field or field. Alternatively, the first information can also be understood as the indication information that is sent by the network device to the terminal device after sending the configuration information of the CG to indicate the channel access type, that is, the channel access type indication. Step S202, the terminal device performs a first channel access process corresponding to the first channel access type.

Exemplarily, if the first channel access type is a receiver-assisted channel access type, the terminal device performing the channel access process corresponding to the receiver-assisted channel access type may include: the terminal device first determines the channel detection of the terminal device. result (free or busy). Then, if the channel detection result determined by the terminal device is idle, the terminal device sends indication information to the network device, and the indication information is used to trigger the network device to obtain the channel detection result (idle or busy) of the network device. It is used to indicate that the channel detection result of the terminal device is idle, or to request the network device for the channel detection result of the network device. After receiving the indication information, the network device obtains the channel detection result of the network device according to the indication information, and sends the channel detection result of the network device to the terminal device. Then, the terminal device determines the first channel state (available or unavailable) according to the channel detection result of the terminal device and the channel detection result of the network device. If the channel detection result of the terminal device is idle and the channel detection result of the network device is idle, then the first channel state is available (that is, the first channel access process is successful); otherwise, the first channel state is unavailable (that is, the first channel state is unavailable (that is, the first channel access process is successful). A channel access procedure failed). When the first channel state is available, the terminal device can send the first uplink information to the network device on the CG resource; otherwise, the terminal device cannot send the first uplink information to the network device on the CG resource.

If the first channel access type is a non-receiver-assisted channel access type, the terminal device performing the channel access process corresponding to the non-receiver-assisted channel access type may include: the terminal device determines the channel detection result of the terminal device (idle or busy), and then the terminal device determines the first channel state (available or unavailable) according to the channel detection result of the terminal device. If the channel detection result of the terminal device is idle, the first channel state is available (ie, the first channel access process is successful); otherwise, the first channel state is unavailable (ie, the first channel access process fails). If the first channel state is available, the terminal device can send the first uplink information to the network device on the CG resource; otherwise, the terminal device cannot send the first uplink information to the network device on the CG resource.

Step S203: If the first channel access process is successful, the terminal device sends the first uplink information to the network device on the CG resource.

In the above technical solution, by indicating the first channel access type corresponding to the CG resource to the terminal device, the network device can enable the terminal device to know the first channel access type corresponding to the CG resource, and perform the corresponding channel access type according to the first channel access type. Channel access process, and then perform uplink transmission on CG resources after the channel access process is completed. The method enables the terminal device to determine a more accurate channel state during the channel access process, avoids the interference of the hidden node to the CG transmission of the terminal device, thereby improving the success rate of the CG transmission and improving the spectrum utilization rate.

Optionally, before the network device sends the first information to the terminal device, the network device may determine whether there is a hidden node for the terminal device according to the channel detection result of the network device, and determine the CG according to whether there is a hidden node for the terminal device. The first channel access type corresponding to the resource, and then first information is sent to the terminal device, indicating the first channel access type corresponding to the CG resource.

If the network device determines that there is a hidden node for the terminal device, for example, the multiple channel detection results of the network device are all busy, then the network device determines that there is a hidden node near it, and then can indicate the receiver-assisted channel access type to the terminal device. , so as to avoid the interference of hidden nodes to the CG transmission of the terminal equipment, and improve the success rate and spectral efficiency of CG transmission.

If the network device determines that there is no hidden node for the terminal device, for example, the multiple channel detection results of the network device are all idle, then the network device determines that there is no hidden node near it, and then can indicate to the terminal device a non-receiver-assisted channel Access type. Compared with the channel access type assisted by the receiver, in this case, the network device does not need to allocate resources for channel access to the terminal device, so that the CG resources configured for the terminal device can be used to send data, so that Improve resource utilization.

Optionally, in a scenario where the first information is another information different from the configuration information of the CG, before the network device sends the first information to the terminal device through step S201, step S200 may also be performed.

In step S200, the network device sends second information to the terminal device, correspondingly, the terminal device receives the second information from the network device, the second information is used to indicate the initial channel access type corresponding to the CG resource, the initial channel access type The input type may be a receiver-assisted channel access type or a non-receiver-assisted channel access type, and the second information may be configuration information of the CG.

It should be noted that the initial channel access type and the first channel access type may be the same or different, which is not limited. Further, the manner in which the second information indicates the initial channel access type may refer to the relevant description above, that is, it may be explicitly indicated by the channel access type indication, or it may be implicitly indicated by whether the first resource and the second resource are indicated. instructions, and will not repeat them. It is also possible that the CG resource has a default initial channel access type, which is also not limited.

In this scenario, since the CG resource has a corresponding initial channel access type, in step S201, after the terminal device receives the first information from the network device, the first information indicates the first channel access type at this time. The access type can also be understood as being used to switch the channel access type corresponding to the CG resource from the initial channel access type to the first channel access type, or to activate the first channel access type corresponding to the CG resource.

Further, the first information may be sent by the network device through a physical downlink control channel (physical downlink control channel, PDCCH) or a medium access control-control element (medium access control-control element, MAC CE). In a scenario where the network device sends the first information through a PDCCH, the PDCCH may be a public PDCCH or a dedicated PDCCH. If it is a common PDCCH, the CG resources of multiple terminal devices need to switch the corresponding channel access type, which can effectively save the PDCCH overhead. If it is a dedicated PDCCH, each terminal device needs to receive its own PDCCH to switch the channel access type corresponding to the CG resource. This method can more effectively use the unlicensed spectrum, because the geographical locations of different terminal devices are different. Which channel access type is used also makes a difference.

Of course, if a terminal device has multiple activated CG resources, the channel access types corresponding to these multiple activated CG resources need to be switched together. In view of this, the first information may further include identification information of the CG resource. After receiving the first information, the terminal device can determine which CG resource corresponds to the first channel access type according to the identification information of the CG resource in the first information, or determine which CG resource needs to switch the corresponding channel access type.

Optionally, after receiving the first information from the network device, the terminal device may send feedback information to the network device, where the feedback information is used to confirm that the CG resource corresponds to the first channel access type. The feedback information can be understood as the confirmation of the first information or the first channel access type by the terminal device, that is, the feedback information is used to notify the network device that the first information has been successfully received, or to notify the network device of the channel access corresponding to the CG resource. Indicates that the access type has been successfully switched to the first channel access type, or is used to confirm the first channel access type corresponding to the activated CG resource. The feedback information may be sent by the network device through physical layer signaling or MAC CE.

Optionally, in this scenario, the network device may also send third information to the terminal device, and correspondingly, the terminal device may receive third information from the network device, where the third information is used to deactivate the first information corresponding to the CG resource. Channel access type. The third information can also be understood as being used for deactivating (or deactivating) the first channel access type corresponding to the CG resource, or for switching the channel access type corresponding to the CG resource from the first channel access type back to the initial channel Access type. Optionally, after receiving the third information from the network device, the terminal device may also send feedback information to the network device. In this case, the feedback information is used to confirm the first channel access type corresponding to the deactivated CG resource.

Understandably, after deactivating the first channel access type, the channel access type corresponding to the CG resource will be switched back to the initial channel access type indicated in the configuration information of the CG. Thereafter, if the terminal device still needs to perform uplink transmission on the CG resource, the terminal device can perform the second channel access process corresponding to the initial channel access type. If the second channel access process is successful, the terminal device can perform the uplink transmission on the CG resource. The second uplink information is sent to the network device, and correspondingly, the network device receives the second uplink information from the terminal device on the CG resource. The second uplink information may be different from the first uplink information, for example, may be different uplink data, or may be the same as the first uplink information, for example, may be retransmitted uplink data, which is not limited.

The channel access method in this embodiment of the present application is described below by using a specific example.

As shown in FIG. 4 , in step S401 , the network device sends the configuration information of the CG to the terminal device, where the configuration information of the CG is used to configure the CG resources and indicates the channel access type assisted by the non-receiver. Correspondingly, the terminal device receives the configuration information of the CG from the network device.

It can be understood that the configuration information of the CG can indicate the non-receiver-assisted channel access type in various ways. For example, the channel access type indication in the configuration information of the CG directly indicates the non-receiver-assisted channel access type. In this way, the terminal device can determine, according to the channel access type indication in the configuration information of the CG, that the initial channel access type corresponding to the CG resource is the non-receiver-assisted channel access type. Alternatively, the network device may configure the default initial channel access type of the CG resource to be a non-receiver-assisted channel access type. In this way, once the network device configures the CG resource for the terminal device through the configuration information of the CG, the terminal device can determine The initial channel access type of the CG resource is a non-receiver-assisted channel access type.

In step S402, the terminal device determines that the initial channel access type corresponding to the CG resource is a non-receiver-assisted channel access type.

When the network device detects the hidden node, in step S403, the network device sends activation indication information to the terminal device, where the activation indication information is used to activate the receiver-assisted channel access type. Correspondingly, the terminal device receives the activation indication information from the network device.

It can be understood that the channel access type assisted by the receiver indicated by the activation indication information may be the channel access type assisted by the receiver being directly indicated by the channel access type indication in the activation indication information.

Optionally, the network device may carry the configuration information and activation indication information of the CG in different RRC messages and send to the terminal device, and the RRC message carrying the configuration information of the CG first is sent before the RRC message carrying the activation indication information. .

In step S404, the terminal device determines, according to the activation indication information, that the channel access type corresponding to the CG resource is switched to the channel access type assisted by the receiver.

Optionally, in one way, the activation indication information may include identification information of the CG resource, so that the terminal device can switch the channel access type corresponding to the CG resource to the receiver-assisted channel according to the identification information. Access type. If the activation indication information does not include the identification information of the CG resource, and the terminal device has multiple activated CG resources, the channel access type corresponding to the multiple activated CG resources will be switched to the receiver-assisted channel access type. input type.

In another manner, the activation indication information may use a bitmap to indicate which CG resource is activated in the receiver auxiliary channel access process. One bit in the bitmap corresponds to one CG resource, where 1 represents Activated, 0 means deactivated.

In step S405, the terminal device sends first feedback information to the network device, where the first feedback information is used to notify the network device that the activation indication information has been successfully received. Correspondingly, the network device receives the first feedback information from the terminal device.

It can be understood that the first feedback information can also be understood as being used to notify the network device that the channel access type corresponding to the CG resource has been successfully switched to the channel access type assisted by the receiver, or used to confirm that the CG resource corresponding to the CG resource has been successfully activated. Receiver-assisted channel access type.

In step S406, the terminal device performs a receiver-assisted channel access process.

In step S407, after the channel access process is successful, the terminal device sends the first uplink information to the network device on the CG resource. It should be noted that the above-mentioned first feedback information may also be sent in this CG transmission or in other transmissions, which is not limited. If the first feedback information is sent in this CG transmission, the above steps S405 and S407 may be combined into one step.

When the network device determines that the hidden node disappears, in step S408, the network device sends deactivation indication information to the terminal device, where the deactivation indication information is used to deactivate the receiver-assisted channel access type.

In step S409, the terminal device switches the channel access type corresponding to the CG resource from the receiver-assisted channel access type to the initial channel access type, that is, the non-receiver-assisted channel access type, according to the deactivation indication information.

In step S410, the terminal device sends second feedback information to the network device, where the second feedback information is used to notify the network device that the deactivation indication information has been successfully received. Correspondingly, the network device receives the second feedback information from the terminal device.

It can be understood that the second feedback information can also be understood as being used to notify the network device that the channel access type corresponding to the CG resource has been successfully switched to the initial channel access type (that is, the channel access type not assisted by the receiver), or Used to confirm that the receiver-assisted channel access type corresponding to the CG resource has been successfully deactivated.

In step S411, the terminal device performs a non-receiver-assisted channel access process.

In step S412, after the channel access process is successful, the terminal device sends the second uplink information to the network device on the CG resource.

In the embodiment of the present application, if the channel access process performed by the terminal device fails, the terminal device may also report information related to the channel access failure to the network device, so that the network device can know the situation of the hidden node, and then optimize the channel of the terminal device. Access configuration or CG configuration.

Taking the above-mentioned first channel access process as an example, the failure of the first channel access process may be because the terminal device fails to receive the channel detection result of the network device, for example, the terminal device does not receive the channel detection result of the network device on the second resource. , it may also be because the terminal device fails to send the channel detection result, for example, the terminal device fails to send the terminal device's own channel detection result to the network device on the first resource, or the terminal device's channel detection result is busy.

If the first channel access process performed by the terminal device fails, the terminal device may send channel access failure information to the network device, and correspondingly, the network device may receive channel access failure information from the terminal device.

Exemplarily, when the number of consecutive failures of the first channel access process reaches the first threshold, the terminal device may send channel access failure information to the network device. Or during the running of the first timer, when the number of consecutive failures of the first channel access process reaches the first threshold, the terminal device may send channel access failure information to the network device. The first timer is started when any failure of the first channel access process is detected, and the first threshold and the duration of the first timer are both configured by the network device.

The channel access failure information may include first failure information and/or second failure information. The first failure information is used to indicate that the terminal device fails to receive the channel detection result of the network device. The first failure information may include indication information used to indicate that the network device fails to receive the channel detection result. Optionally, it may also include The number of times that the channel detection result of the network device failed to receive. The second failure information is used to indicate that the terminal device fails to send the channel detection result of the terminal device, and the second failure information may include indication information used to indicate that the terminal device fails to send the channel detection result. It can be understood that the content of the channel access failure information will vary according to the reasons for the channel access failure, that is, when the network device fails to receive the channel detection result, the channel access failure information will include the first failure. information, when the transmission of the channel detection result of the terminal device fails, the channel access failure information will include the second failure information.

Further, the network device can optimize the channel access configuration or the CG configuration of the terminal device according to the received channel access failure information. The channel access configuration may include one or more items such as a first threshold (counter), a duration of a first timer (timer), a resource configuration of the first resource or the second resource, and the like. For example, if the terminal device frequently reports channel access failure information, indicating that the threshold of the first threshold is too small or the duration of the first timer is too short, the network device may send a new channel access configuration to the terminal device to set a larger one. the first threshold or a longer first timer. If the terminal device frequently reports channel access failure information, it can also indicate that the configuration of the first resource or the second resource is unreasonable, resulting in a resource conflict with other devices. Then the network device can send new CG configuration information to the terminal device to reconfigure the new CG resources, including the first resource and the second resource.

An embodiment of the present application further provides a communication device. Please refer to FIG. 5 , which is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device 500 includes a transceiver module 510 and a processing module 520 . The communication apparatus can be used to implement the functions related to the terminal device in any of the foregoing method embodiments. For example, the communication device may be a terminal device, such as a handheld terminal device or a vehicle-mounted terminal device; the communication device may also be a chip or circuit included in the terminal device, or a device including the terminal device, such as various types of vehicles.

The communication apparatus may be used to implement the functions related to the network device in any of the foregoing method embodiments. For example, the communication apparatus may be a network device or a chip or circuit included in the network device.

Exemplarily, when the communication apparatus performs the operation or step corresponding to the terminal device in the method embodiment shown in FIG. 2 , the transceiver module 510 is configured to receive first information from the network device, where the first information is used to indicate Configure the first channel access type corresponding to the authorized CG resource; the processing module 520 is configured to perform the first channel access process corresponding to the first channel access type; if the first channel access process is successful, the terminal device is on the CG resource Send the first uplink information to the network device.

When the communication apparatus performs the operation or step corresponding to the network device in the method embodiment shown in FIG. 2 , the transceiver module 510 is configured to send first information to the terminal device, where the first information is used to indicate that the configuration authorized CG resource corresponds to The processing module 520 is configured to, if the first channel access process performed by the terminal device is successful, receive the first uplink information from the terminal device on the CG resource.

The processing module 520 involved in the communication apparatus may be implemented by at least one processor or a processor-related circuit component, and the transceiver module 510 may be implemented by at least one transceiver or a transceiver-related circuit component or a communication interface. The operations and/or functions of each module in the communication device are respectively to implement the corresponding flow of the method shown in FIG. 2 or FIG. 4 , and are not repeated here for brevity. Optionally, the communication device may also include a storage module, which may be used to store data and/or instructions, and the transceiver module 510 and/or the processing module 520 may read the data and/or instructions in the access module, Thereby, the communication device can implement the corresponding method. The memory module can be implemented, for example, by at least one memory.

The above-mentioned storage module, processing module, and transceiver module may exist separately, or all or part of the modules may be integrated, for example, the storage module and the processing module are integrated, or the processing module and the transceiver module are integrated.

Please refer to FIG. 6 , which is another schematic structural diagram of a communication apparatus provided in an embodiment of the present application. Specifically, the communication device may be a terminal device, and the communication device may be used to implement the functions related to the terminal device in any of the foregoing method embodiments. For the convenience of understanding and illustration, in FIG. 6 , the terminal device takes a mobile phone as an example. As shown in FIG. 6 , the terminal device includes a processor, may also include a memory, and of course, may also include a radio frequency circuit, an antenna, an input and output device, and the like. The processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, and process data of software programs. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal. Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 6 . In an actual end product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device or the like. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.

In the embodiments of the present application, the antenna and the radio frequency circuit with a transceiver function may be regarded as a transceiver unit of the terminal device, and the processor with a processing function may be regarded as a processing unit of the terminal device. As shown in FIG. 6 , the terminal device includes a transceiver unit 610 and a processing unit 620 . The transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, or the like. The processing unit may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like. Optionally, the device for implementing the receiving function in the transceiver unit 610 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 610 may be regarded as a transmitting unit, that is, the transceiver unit 610 includes a receiving unit and a transmitting unit. The transceiver unit may also sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit. The receiving unit may also sometimes be referred to as a receiver, receiver, or receiving circuit, or the like. The transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like. It should be understood that the transceiving unit 610 is configured to perform the sending and receiving operations on the terminal side in the above method embodiments, and the processing unit 620 is configured to perform other operations on the terminal except the transceiving operations in the above method embodiments.

Please refer to FIG. 7 , which is another schematic structural diagram of a communication device provided in an embodiment of the present application. The communication apparatus may specifically be a network device, such as a base station, for implementing the functions related to the network device in any of the foregoing method embodiments.

The network device 700 includes: one or more DUs 701 and one or more CUs 702. Wherein, the DU 701 may include at least one antenna 7011, at least one radio frequency unit 7012, at least one processor 7013 and at least one memory 7014. The DU 701 is mainly used for the transceiver of radio frequency signals, the conversion of radio frequency signals and baseband signals, and part of baseband processing.

The CU 702 may include at least one processor 7022 and at least one memory 7021. The CU 702 is mainly used to perform baseband processing, control the base station, and the like. The CU 702 is the control center of the base station, and may also be referred to as a processing unit. For example, the CU 702 may be used to control the base station to perform the operations or steps corresponding to the network device in the method shown in FIG. 2 or FIG. 4 .

The CU 702 and the DU 701 can communicate through an interface, wherein the control plane (CP) interface can be Fs-C, such as F1-C, the user plane (UP) interface can be Fs-U, Such as F1-U. The DU 701 and the CU 702 may be physically set together, or may be physically set apart (ie, distributed base stations), which is not limited.

Specifically, the baseband processing on the CU and DU can be divided according to the protocol layers of the wireless network. For example, the functions of the PDCP layer and the above protocol layers are set in the CU, and the function settings of the protocol layers below the PDCP layer (such as the RLC layer and the MAC layer, etc.) are set. in DU. For another example, the CU implements the functions of the RRC and PDCP layers, and the DU implements the functions of the RLC, MAC, and physical (physical, PHY) layers.

Optionally, the network device 700 may include one or more radio frequency units (RUs), one or more DUs and one or more CUs. The DU may include at least one processor 7013 and at least one memory 7014 , the RU may include at least one antenna 7011 and at least one radio frequency unit 7012 , and the CU may include at least one processor 7022 and at least one memory 7021 .

In one embodiment, the CU 702 may be composed of one or more single boards, and the multiple single boards may jointly support a wireless access network (such as a 5G network) with a single access indication, or may support different access standards respectively. wireless access network (such as LTE network, 5G network or other networks). The memory 7021 and the processor 7022 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.

The DU 701 can be composed of one or more single boards, and multiple single boards can jointly support a wireless access network (such as a 5G network) with a single access indication, or can respectively support a wireless access network with different access standards ( Such as LTE network, 5G network or other network). The memory 7014 and processor 7013 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.

An embodiment of the present application further provides a chip system, including: a processor, where the processor is coupled with a memory, the memory is used to store a program or an instruction, and when the program or instruction is executed by the processor, the The chip system implements a method corresponding to a terminal device or a method corresponding to a network device in any of the foregoing method embodiments.

Optionally, the number of processors in the chip system may be one or more. The processor can be implemented by hardware or by 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 codes stored in memory.

Optionally, there may also be one or more memories in the chip system. The memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application. Exemplarily, the memory can be a non-transitory processor, such as a read-only memory ROM, which can be integrated with the processor on the same chip, or can be provided on different chips. The setting method of the processor is not particularly limited.

Exemplarily, the system-on-chip may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC), It can also be a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller). controller unit, MCU), it can also be a programmable logic device (PLD) or other integrated chips.

It should be understood that, each step in the above method embodiments may be implemented by a hardware integrated logic circuit in a processor or an instruction in the form of software. The method steps disclosed in conjunction with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

Embodiments of the present application further provide a computer-readable storage medium, where computer-readable instructions are stored in the computer storage medium, and when the computer reads and executes the computer-readable instructions, the computer is made to execute any of the foregoing method embodiments method in .

Embodiments of the present application further provide a computer program product, which, when the computer reads and executes the computer program product, causes the computer to execute the method in any of the above method embodiments.

An embodiment of the present application further provides a communication system, where the communication system includes a network device and at least one terminal device. Optionally, the communication system may further include core network equipment.

It should be understood that the processor mentioned in the embodiments of the present application may be a CPU, other general-purpose processors, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory mentioned in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory, dynamic random access memory, synchronous dynamic random access memory, double data rate synchronous dynamic random access memory, enhanced synchronous dynamic random access memory Random Access Memory, Synchronous Attached Dynamic Random Access Memory, and Direct Memory Bus Random Access Memory.

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components, the memory (storage module) is integrated in the processor.

It should be noted that the memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the various numerical numbers involved in the various embodiments of the present application are only for the convenience of description. The sequence should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk and other mediums that can store program codes.

In the various embodiments of the present application, if there is no special description or logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referred to each other, and the technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

Claims

A channel access method, characterized in that the method comprises:

The terminal device receives the first information from the network device, where the first information is used to indicate the first channel access type corresponding to the configuration authorized CG resource;

performing, by the terminal device, a first channel access process corresponding to the first channel access type;

If the first channel access process is successful, the terminal device sends the first uplink information to the network device on the CG resource.
The method according to claim 1, wherein the first information is used to indicate the first channel access type corresponding to the CG resource, comprising:

The first information includes a channel access type indication, where the channel access type indication is used to indicate the first channel access type.
The method according to claim 2, wherein, if the first channel access type is a receiver-assisted channel access type;

The method also includes:

the terminal device determines the first resource and the second resource;

Wherein, the first resource is used for the terminal device to send the channel detection result of the terminal device to the network device during the channel access process, or to request the network device for the channel detection result of the network device;

The second resource is used for the terminal device to receive the channel detection result of the network device during the channel access process.
The method according to claim 1, wherein the first information is used to indicate the first channel access type corresponding to the CG resource, comprising:

If the first information indicates a first resource and a second resource, the first channel access type is a receiver-assisted channel access type;

Wherein, the first resource is used for the terminal device to send the channel detection result of the terminal device to the network device during the channel access process, or to request the network device for the channel detection result of the network device;

The second resource is used for the terminal device to receive the channel detection result of the network device during the channel access process.
The method according to any one of claims 1 to 4, wherein the method further comprises:

If the first channel access process fails, the terminal device sends channel access failure information to the network device, where the channel access failure information includes first failure information and/or second failure information, the first failure information A failure information is used to indicate that the terminal device fails to receive the channel detection result of the network device, and the second failure information is used to indicate that the terminal device fails to send the channel detection result of the terminal device.
The method according to any one of claims 1 to 5, wherein before the terminal device receives the first information from the network device, the method further comprises:

The terminal device receives second information from the network device, where the second information is used to indicate an initial channel access type corresponding to the CG resource.
The method according to claim 6, wherein the method further comprises:

The terminal device sends feedback information to the network device, where the feedback information is used to confirm that the CG resource corresponds to the first channel access type.
The method according to claim 6 or 7, wherein the method further comprises:

receiving, by the terminal device, third information from the network device, where the third information is used to deactivate the first channel access type corresponding to the CG resource;

performing, by the terminal device, a second channel access process corresponding to the initial channel access type;

After the second channel access process is successful, the terminal device sends the second uplink information to the network device on the CG resource.
A channel access method, characterized in that the method comprises:

The network device sends first information to the terminal device, where the first information is used to indicate the first channel access type corresponding to the configuration authorized CG resource;

If the first channel access process performed by the terminal device is successful, the network device receives the first uplink information from the terminal device on the CG resource.
The method according to claim 9, wherein when there is a hidden node for the terminal device, the first channel access type is a receiver-assisted channel access type.
The method according to claim 9 or 10, wherein the first information is used to indicate the first channel access type corresponding to the CG resource, comprising:

The first information includes a channel access type indication, where the channel access type indication is used to indicate the first channel access type.
The method according to claim 9 or 10, wherein the first information is used to indicate the first channel access type corresponding to the CG resource, comprising:

If the first information indicates a first resource and a second resource, the first channel access type is a receiver-assisted channel access type;

Wherein, the first resource is used for the terminal device to send the channel detection result of the terminal device to the network device during the channel access process, or to request the network device for the channel detection result of the network device;

The second resource is used for the terminal device to receive the channel detection result of the network device during the channel access process.
The method according to any one of claims 9 to 12, wherein the method further comprises:

If the first channel access process performed by the terminal device fails, the network device receives channel access failure information from the terminal device, where the channel access failure information includes first failure information and/or second failure information information, the first failure information is used to indicate that the terminal device fails to receive the channel detection result of the network device, and the second failure information is used to instruct the terminal device to send the channel detection result of the terminal device. fail;

The network device optimizes the channel access configuration or the CG configuration of the terminal device according to the channel access failure information.
The method according to any one of claims 9 to 13, wherein before the network device sends the first information to the terminal device, the method further comprises:

The network device sends second information to the terminal device, where the second information is used to indicate an initial channel access type corresponding to the CG resource.
The method of claim 14, wherein the method further comprises:

The network device receives feedback information from the terminal device, where the feedback information is used to confirm the activation of the first channel access type corresponding to the CG resource.
The method according to claim 14 or 15, wherein the method further comprises:

sending, by the network device, third information to the terminal device, where the third information is used to deactivate the first channel access type corresponding to the CG resource;

If the second channel access process performed by the terminal device is successful, the network device receives the second uplink information from the terminal device on the CG resource.
A communication device, characterized in that the device comprises:

a transceiver module, configured to receive first information from a network device, where the first information is used to indicate a first channel access type corresponding to the configuration authorized CG resource;

a processing module, configured to perform a first channel access process corresponding to the first channel access type;

The processing module is further configured to, if the first channel access process is successful, send the first uplink information to the network device on the CG resource through the transceiver module.
The apparatus according to claim 17, wherein the first information includes a channel access type indication, and the channel access type indication is used to indicate the first channel access type.
The apparatus according to claim 18, wherein if the first channel access type is a receiver-assisted channel access type, the processing module is further configured to determine the first resource and the second resource;

Wherein, the first resource is used for the device to send the channel detection result of the device to the network device during the channel access process, or to request the network device for the channel detection result of the network device;

The second resource is used for the apparatus to receive the channel detection result of the network device during the channel access process.
The apparatus according to claim 17, wherein if the first information indicates the first resource and the second resource, the first channel access type is a receiver-assisted channel access type;

Wherein, the first resource is used for the device to send the channel detection result of the device to the network device during the channel access process, or to request the network device for the channel detection result of the network device;

The second resource is used for the apparatus to receive the channel detection result of the network device during the channel access process.
The device according to any one of claims 17 to 20, wherein the transceiver module is further configured to:

If the first channel access process fails, send channel access failure information to the network device, where the channel access failure information includes first failure information and/or second failure information, and the first failure information uses In order to instruct the device to fail to receive the channel detection result of the network device, the second failure information is used to instruct the device to fail in sending the channel detection result of the device.
The device according to any one of claims 17 to 21, wherein the transceiver module is further configured to:

Second information from a network device is received, where the second information is used to indicate an initial channel access type corresponding to the CG resource.
The device according to claim 22, wherein the transceiver module is further configured to:

Send feedback information to the network device, where the feedback information is used to confirm that the CG resource corresponds to the first channel access type.
The apparatus according to claim 22 or 23, wherein the transceiver module is further configured to receive third information from the network device, where the third information is used to deactivate all the corresponding CG resources Describe the first channel access type;

The processing module is also used for:

performing a second channel access process corresponding to the initial channel access type;

After the second channel access process is successful, the transceiver module sends second uplink information to the network device on the CG resource.
A communication device, characterized in that the device comprises:

a transceiver module, configured to send first information to the terminal device, where the first information is used to indicate the first channel access type corresponding to the configuration authorized CG resource;

A processing module, configured to receive the first uplink information from the terminal device on the CG resource through the transceiver module if the first channel access process performed by the terminal device is successful.
The apparatus according to claim 25, wherein when there is a hidden node for the terminal device, the first channel access type is a receiver-assisted channel access type.
The apparatus according to claim 25 or 26, wherein the first information includes a channel access type indication, and the channel access type indication is used to indicate the first channel access type.
The apparatus according to claim 25 or 26, wherein, if the first information indicates the first resource and the second resource, the first channel access type is a receiver-assisted channel access type;

Wherein, the first resource is used for the terminal device to send the channel detection result of the terminal device to the device during the channel access process, or to request the device for the channel detection result of the device;

The second resource is used for the terminal device to receive the channel detection result of the apparatus during the channel access process.
The device according to any one of claims 25 to 28, wherein the transceiver module is further configured to:

If the first channel access process performed by the terminal device fails, receive channel access failure information from the terminal device, where the channel access failure information includes first failure information and/or second failure information, the The first failure information is used to indicate that the terminal device fails to receive the channel detection result of the device, and the second failure information is used to indicate that the terminal device fails to send the channel detection result of the terminal device;

The processing module is further configured to, according to the channel access failure information, optimize the channel access configuration or the CG configuration of the terminal device.
The apparatus according to any one of claims 25 to 29, wherein the transceiver module is further configured to: send second information to the terminal device, where the second information is used to indicate that the CG resource corresponds to the initial channel access type.
The device according to claim 30, wherein the transceiver module is further configured to:

Receive feedback information from the terminal device, where the feedback information is used to confirm the activation of the first channel access type corresponding to the CG resource.
The device according to claim 30 or 31, wherein the transceiver module is further configured to:

sending third information to the terminal device, where the third information is used to deactivate the first channel access type corresponding to the CG resource;

If the second channel access process performed by the terminal device is successful, the second uplink information from the terminal device is received on the CG resource.
A communication device, characterized by being used for executing the method of any one of claims 1 to 8.
A communication device, characterized by being used for executing the method of any one of claims 9 to 16.
A communication device, characterized by comprising a processor and a memory, wherein the processor and the memory are coupled, and the processor is configured to implement the method according to any one of claims 1 to 8.
A communication device, characterized in that it comprises a processor and a memory, the processor and the memory are coupled, and the processor is configured to implement the method according to any one of claims 9 to 16.
A communication device, characterized by comprising a processor and an interface circuit, the interface circuit being configured to receive signals from other communication devices other than the communication device and transmit to the processor or transfer signals from the processor The signal is sent to other communication devices other than the communication device, and the processor is used to implement the method according to any one of claims 1 to 8 by means of a logic circuit or executing code instructions.
A communication device, characterized by comprising a processor and an interface circuit, the interface circuit being configured to receive signals from other communication devices other than the communication device and transmit to the processor or transfer signals from the processor The signal is sent to other communication devices other than the communication device, and the processor is used to implement the method according to any one of claims 9 to 16 by means of a logic circuit or executing code instructions.
A computer-readable storage medium for storing instructions which, when executed, cause the method of any one of claims 1 to 16 to be implemented.
A computer program product, characterized in that the computer program product comprises instructions which, when executed, implement the method of any one of claims 1 to 16.
A communication system, characterized by comprising the communication device as claimed in any one of claims 17-24, 33, 35, and 37, and the communication device as claimed in any one of claims 25-32, 34, 36, and 38. the communication device described.