WO2024114411A1

WO2024114411A1 - Resource management method and apparatus

Info

Publication number: WO2024114411A1
Application number: PCT/CN2023/132305
Authority: WO
Inventors: 何泓利; 李雪茹
Original assignee: 华为技术有限公司
Priority date: 2022-11-28
Filing date: 2023-11-17
Publication date: 2024-06-06
Also published as: CN118102460A

Abstract

Provided in the embodiments of the present application are a resource management method and apparatus. The method comprises: a first device determining a resource pool, wherein the resource pool comprises at least one frequency-domain resource, the at least one frequency-domain resource being associated with at least one piece of indication information one by one, and each piece of indication information among the at least one piece of indication information being used for indicating whether a frequency-domain resource, which is associated with each piece of indication information, can be used for sidelink communication on at least one time unit; and the first device performing sidelink communication on the first time unit by using the first frequency-domain resource and according to the at least one piece of indication information. The at least one frequency-domain resource comprises a first frequency-domain resource, and the at least one time unit comprises the first time unit. The technical solution can reduce the time delay of a first device performing sidelink communication.

Description

A method and device for resource management

This application claims priority to the Chinese patent application filed with the China Patent Office on November 28, 2022, with application number 202211503751.6 and application name “A Resource Selection Method”, all contents of which are incorporated by reference into this application.

This application claims the priority of the Chinese patent application filed with the China Patent Office on January 6, 2023, with application number 202310020420.5 and application name “A method and device for resource management”, the entire contents of which are incorporated by reference in this application.

Technical Field

Embodiments of the present application relate to the field of communication technology, and more specifically, to a method and device for resource management.

Background technique

Sidelink (SL) is an important technology that enables direct device-to-device (D2D) communication without going through a base station in the long-term evolution (LTE) system and the fifth-generation new radio (5G NR) system. Since the transmission between devices does not need to be forwarded by the base station, Sidelink can achieve shorter latency, higher spatial multiplexing efficiency and lower core network load. It plays a huge role in scenarios with relatively high local communication requirements, such as vehicle to everything (V2X), smart home, short-distance transmission, virtual/augmented reality (VR/AR), and smart factories.

In future industrial scenarios, generally speaking, since enterprises do not have dedicated spectrum resources to enable direct communication between devices, they can consider using unlicensed frequency bands to deploy Sidelink networks to enable direct communication between devices.

Although there may be other networks such as Wi-Fi or Bluetooth in the unlicensed frequency band, in the special scenario of the factory, the deployment of other networks can be avoided through manual control, so as to ensure that other networks in the unlicensed frequency band in a specific area have less interference with the Sidelink network.

Therefore, how to ensure the network transmission performance between devices in the unlicensed frequency band is an issue that needs to be solved urgently.

Summary of the invention

The embodiments of the present application provide a method and apparatus for resource management, which can reduce the communication delay between devices.

In a first aspect, a resource management method is provided, which can be executed by a sending device or a receiving device, or can also be executed by a chip or circuit used for the sending device or the receiving device, and the present application does not limit this. For ease of description, the following is an example of execution by a receiving device.

The method includes:

The first device determines a resource pool, which includes at least one frequency domain resource, and the at least one frequency domain resource is associated one-to-one with at least one indication information, and each indication information in the at least one indication information is used to indicate whether the frequency domain resource associated with it can be used for sidelink communication in at least one time unit; the first device uses the first frequency domain resource to perform Sidelink communication in the first time unit according to the at least one indication information, the at least one frequency domain resource includes the first frequency domain resource, and the at least one time unit includes the first time unit, and the first indication information in the at least one indication information is used to indicate that the first frequency domain resource can be used for sidelink communication in the first time unit, and the first indication information is associated with the first frequency domain resource.

It should be understood that the at least one frequency domain resource may include one or more (i.e., two or more) frequency domain resources, and the at least one indication information may include one or more indication information. Among them, at least one frequency domain resource is associated with at least one indication information one-to-one, or corresponds one-to-one, that is, one indication information can be used to indicate whether the frequency domain resource associated with the indication information can be used for Sidelink communication in at least one time unit.

It should also be understood that the resource pool in the present application may be pre-configured or configured by a network device.

It should also be understood that the steps included in the method described in the present application can be independently implemented by one device, or can be implemented separately by multiple different devices (for example, in a distributed system, multiple different devices complete their corresponding operations).

According to the technical solution provided in this application, the resource pool determined by the first device includes at least one frequency domain resource. The resource is associated one-to-one with at least one indication information. The first device uses the first frequency domain resource to perform Sidelink communication in the first time unit according to the at least one indication information. The indication information associated with each frequency domain resource can indicate which specific time units on the frequency domain resource the first device can perform Sidelink communication on, and then when a frequency domain resource cannot be used for Sidelink communication in a certain time unit and the first device has a Sidelink transmission requirement, the first device can use other available frequency domain resources in the time unit for communication, thereby reducing the delay caused by waiting for resources to be available and improving the performance of the entire network transmission.

In combination with the first aspect, in some possible implementations, the at least one indication information includes second indication information, the second indication information includes a second bit map, and the at least one time unit includes a second time unit. The second time unit corresponds to the second bit in the second bit map, and the second indication information is associated with the second frequency domain resource. When the second bit is a first value, the second indication information is used to indicate that the second frequency domain resource can be used for Sidelink communication in the second time unit; when the second bit is a second value, the second indication information is used to indicate that the second frequency domain resource cannot be used for Sidelink communication in the second time unit. The second time unit can be any one of the at least one time unit, and the second frequency domain resource can be any one of the at least one frequency domain resource.

Based on the above technical solution, the at least one indication information may be in the form of a bitmap, and for any frequency domain resource, the first device may determine whether the frequency domain resource is available for Sidelink communication in each time unit according to the indication information (bitmap) associated therewith. Similarly, the first device may perform the above process for each frequency domain resource, so that the first device can determine whether each frequency domain resource is available for Sidelink communication in each time unit.

In combination with the first aspect, in some possible implementations, the first indication information includes a first bit map, and the bit in the first bit map corresponding to the first time unit is the first value.

Based on the above technical solution, the first indication information is used to indicate that the first frequency domain resource can be used for Sidelink communication in the first time unit, that is, when the first indication information includes a first bitmap, the value of the first bit corresponding to the first time information should be the first value. Thus, the first device can determine that the first frequency domain resource can be used for Sidelink communication in the first time unit according to the first information in the at least one indication information, thereby reducing the transmission delay of the first device and improving the efficiency of the entire network communication.

In combination with the first aspect, in some possible implementations, at least one indication information includes third indication information, the third indication information includes cycle length and offset information, the cycle length and offset information are used to determine at least one third time unit, the third indication information is associated with a third frequency domain resource, and the third indication information is used to indicate that the third frequency domain resource cannot be used for Sidelink communication in at least one third time unit.

Based on the above technical solution, the at least one indication information may specifically include cycle length and offset information. For any frequency domain resource, according to its associated indication information (cycle length and offset information), the first device can determine a time unit in each cycle, and the frequency domain resource is not available for Sidelink communication in the time unit, so that the first device can indirectly determine that the frequency domain resource can be used for Sidelink communication in other time units. Similarly, the first device can perform the above process for each frequency domain resource, so that the first device can determine whether each frequency domain resource can be used for Sidelink communication in each time unit.

In combination with the first aspect, in some possible implementations, the third indication information also includes a first length, and the first length is used to determine at least one third time unit. The first device determines that the third frequency domain resource cannot be used for Sidelink communication in at least one third time unit based on the cycle length, offset information and the first length.

Based on the above technical solution, the third indication information also includes a first length, the first length, the cycle length and the offset information. For any frequency domain resource, according to its associated indication information (cycle length, offset information and first length), the first device can determine one or more time units in each cycle, and the frequency domain resource is not available for Sidelink communication in the one or more time units, so that the first device can indirectly determine that the frequency domain resource can be used for Sidelink communication in other time units. Similarly, the first device can perform the above process for each frequency domain resource, so that the first device can determine whether each frequency domain resource can be used for Sidelink communication in each time unit.

In combination with the first aspect, in some possible implementations, the first device sends a first signal on a first frequency domain resource before a first time unit, and the first signal is used to occupy the first frequency domain resource.

Based on the above technical solution, the first device sends a first signal on the first frequency domain resource before the first time unit, and the first signal is used to occupy the first frequency domain resource. Alternatively, it can be understood that the first signal is used to initialize the channel occupation time in the first frequency domain resource, allowing the first device to perform sidelink communication in the subsequent time unit.

In combination with the first aspect, in some possible implementations, the duration between the start time of sending the first signal on the first frequency domain resource and the start time of the first time unit is the first duration, the duration of the first signal is the second duration, and the first duration and the second duration are The configuration information of the resource pool is configured or pre-configured.

Based on the above technical solution, the above-mentioned first duration and second duration can be configured or pre-configured for the configuration information of the resource pool, which can ensure that the first device sends the first signal at a specific location, thereby avoiding interference with the channel clear assessment (CCA) of other devices.

In combination with the first aspect, in some possible implementations, the first time unit includes a first time subunit, the first time subunit includes an automatic gain control (AGC) time domain resource, and before the first device determines to perform Sidelink communication on a frequency domain resource in a first frequency domain resource, the first device sends a first signal on the first frequency domain resource before the AGC time domain resource, and the first signal is used to occupy the first frequency domain resource.

Based on the above technical solution, before the first device uses the first frequency domain resource to perform Sidelink communication on the first time unit, the first device sends a first signal before the AGC time domain resource in the first time unit, and in particular, the AGC time domain resource belongs to the first time subunit in the first time unit. The first signal is used to occupy the first frequency domain resource. Alternatively, it can be understood that the first signal is used to initialize the channel occupancy time in the first frequency domain resource, which can allow the first device to perform Sidelink communication on the subsequent time unit.

In combination with the first aspect, in some possible implementation methods, a first signal is sent at a first moment, the first moment is a moment in a first time unit, the duration between the first moment and the start moment of the first time unit is a third duration, the duration of the first signal is a second duration, and the second duration and the third duration are configured or pre-configured by the configuration information of the resource pool; or, the first signal is sent at a second moment, the second moment is a moment before the start moment of the first time unit, the duration between the second moment and the start moment of the first time unit is a fourth duration, the duration of the first signal is a fifth duration, and the fourth duration and the fifth duration are configured or pre-configured by the configuration information of the resource pool.

Based on the above technical solution, the sending time of the first signal can be before the starting time of the first time unit or after the starting time of the first time unit. Different sending times can be configured according to the capabilities of different devices. Specific configuration information, such as the second duration, the third duration, the fourth duration, and the fifth duration can be included in the resource pool configuration information or pre-configured to ensure that the first device sends the first signal at a specific location, thereby avoiding interference with the channel clean assessment CCA of other devices.

In combination with the first aspect, in some possible implementations, the time interval between the start time of the AGC time domain resource and the start time of the first time unit is configured or pre-configured by configuration information of the resource pool.

Based on the above technical solution, through the configuration information configuration or pre-configuration of the resource pool, the time interval between the start time of the AGC time domain resource and the start time of the first time unit ensures that the AGC time domain resources between the first device and its opposite device (for example, the first device is a sending device, and its opposite device is a receiving device, or vice versa) can be aligned, so that the receiving device can obtain more accurate AGC results.

In combination with the first aspect, in some possible implementation methods, when the first device accesses the first frequency domain resource using a frame-based equipment (FBE) method, the FBE method is divided into at least two fixed frames on the time domain resource, each of the at least two fixed frames includes a channel occupied time and a channel idle time, and the first time unit corresponds to the starting position of the channel occupied time in one of the at least two fixed frames.

Based on the above technical solution, when the first device accesses the first frequency domain resource in the FBE mode, the first device uses the first frequency domain resource to perform Sidelink communication in the first time unit, and the first time unit corresponds to the starting position of the channel occupancy time in the fixed frame divided in the FBE mode. This ensures that the first device uses the first frequency domain resource and can perform Sidelink communication in the first time unit, thereby ensuring the data transmission performance of the first device and avoiding the problem of service interruption.

In combination with the first aspect, in some possible implementations, the first time unit corresponds to the first bit with a first value in the bit map.

Based on the above technical solution, when the first device determines that the first frequency domain resource can perform Sidelink communication in the first time unit, the first time unit corresponds to the first bit in the bitmap with the first value, so that the first device can determine the starting position of the channel occupation time in a fixed frame, and send the first signal at the starting position to occupy the channel.

In combination with the first aspect, in some possible implementations, the first time unit corresponds to a first time unit of a time unit that can be used for sidelink communication after a third time unit among at least one third time unit.

Based on the above technical solution, the first time unit that can be used for Sidelink communication after one of the at least one third time unit corresponding to the first time unit enables the first device to determine the starting position of the channel occupation time in a fixed frame and send the first signal at the starting position to occupy the channel.

In combination with the first aspect, in some possible implementations, before the first device sends the first signal, the first device performs a channel cleanliness assessment on the first frequency domain resource to determine that the first frequency domain resource is in an idle state.

Based on the above technical solution, before the first device uses the first frequency domain resource to send the first signal, the first device The first device performs a channel cleanliness assessment and determines that the first frequency domain resource is idle. The first device sends the first signal on the first frequency domain resource. The first device sends the first signal when it determines that the first frequency domain resource is not occupied by other devices and does not cause interference to other devices.

In a second aspect, a method for resource management is provided, the method comprising: determining a resource pool, the resource pool comprising at least one frequency domain resource, the at least one frequency domain resource being associated one-to-one with at least one indication information, each indication information in the at least one indication information being used to indicate whether the frequency domain resource associated therewith can be used for Sidelink communication in at least one time unit; and performing Sidelink communication in a first time unit using a first frequency domain resource according to the at least one indication information, the at least one frequency domain resource comprising the first frequency domain resource, the at least one time unit comprising the first time unit, the first indication information in the at least one indication information being used to indicate that the first frequency domain resource can be used for Sidelink communication in the first time unit, the first indication information being associated with the first frequency domain resource.

It should be understood that the above steps can be completed by multiple different devices respectively, or by all devices working on the same resource pool.

According to the technical solution provided by the present application, the determined resource pool includes at least one frequency domain resource, and the at least one frequency domain resource is associated one-to-one with at least one indication information. According to the at least one indication information, the first frequency domain resource is used to perform Sidelink communication in the first time unit. The indication information associated with each frequency domain resource can indicate which specific time units on the frequency domain resource the device on the resource pool can perform Sidelink communication, and then when a frequency domain resource cannot be used for Sidelink communication in a certain time unit and there are devices on the resource pool with Sidelink transmission requirements, the devices on the resource pool can use other available frequency domain resources to communicate in the time unit, reducing the delay caused by waiting for resources to be available, that is, the available resources determined by all devices in the resource pool are the same, ensuring the interconnection between the devices in the resource pool and improving the transmission performance of the entire network.

In combination with the second aspect, in some possible implementations, the at least one indication information includes second indication information, the second indication information includes a second bit map, and the at least one time unit includes a second time unit. The second time unit corresponds to the second bit in the second bit map, and the second indication information is associated with the second frequency domain resource. When the second bit is a first value, the second indication information is used to indicate that the second frequency domain resource can be used for Sidelink communication in the second time unit; when the second bit is a second value, the second indication information is used to indicate that the second frequency domain resource cannot be used for Sidelink communication in the second time unit. The second time unit can be any one of the at least one time unit, and the second frequency domain resource can be any one of the at least one frequency domain resource.

Based on the above technical solution, the at least one indication information may be in the form of a bitmap, and for any frequency domain resource, the device in the resource pool may determine whether the frequency domain resource is available for Sidelink communication in each time unit according to the indication information (bitmap) associated therewith. Similarly, the device may perform the above process for each frequency domain resource, so that the device in the resource pool may determine whether each frequency domain resource is available for Sidelink communication in each time unit.

In combination with the second aspect, in some possible implementations, the first indication information includes a first bit map, and the bit in the first bit map corresponding to the first time unit is the first value.

Based on the above technical solution, the first indication information is used to indicate that the first frequency domain resource can be used for Sidelink communication in the first time unit. That is, when the first indication information includes a first bitmap, the value of the first bit corresponding to the first time information should be the first value. Thus, the device on the resource pool can determine that the first frequency domain resource can be used for Sidelink communication in the first time unit according to the first information in the at least one indication information, thereby reducing the transmission delay and improving the efficiency of the entire network communication.

In combination with the second aspect, in some possible implementation methods, at least one indication information includes third indication information, the third indication information includes cycle length and offset information, the cycle length and offset information are used to determine at least one third time unit, the third indication information is associated with a third frequency domain resource, and the third indication information is used to indicate that the third frequency domain resource cannot be used for Sidelink communication in at least one third time unit.

Based on the above technical solution, the at least one indication information may specifically include cycle length and offset information. For any frequency domain resource, according to its associated indication information (cycle length and offset information), the device in the resource pool can determine a time unit in each cycle, and the frequency domain resource is not available for Sidelink communication in the time unit, so that the device can indirectly determine that the frequency domain resource can be used for Sidelink communication in other time units. Similarly, the device on the resource pool can perform the above process for each frequency domain resource, so that the device on the resource pool can determine whether each frequency domain resource can be used for Sidelink communication in each time unit.

In conjunction with the second aspect, in some possible implementations, the third indication information further includes a first length, and the first length is used to determine at least one third time unit. According to the cycle length, the offset information, and the first length, it is determined that the third frequency domain resource cannot be used for sidelink communication in at least one third time unit.

Based on the above technical solution, the third indication information also includes a first length, the first length, the cycle length and the offset information. For any frequency domain resource, according to its associated indication information (cycle length, offset information and first length), the device on the resource pool can determine one or more time units in each cycle, and the frequency domain resource is not available for Sidelink communication in the one or more time units, so that the device can indirectly determine that the frequency domain resource can be used for Sidelink communication in other time units. Similarly, the device can perform the above process for each frequency domain resource, so that the device can determine whether each frequency domain resource can be used for Sidelink communication in each time unit.

In combination with the second aspect, in some possible implementations, before a first time unit, a first signal is sent on a first frequency domain resource, and the first signal is used to occupy the first frequency domain resource.

Based on the above technical solution, before the first time unit, a first signal is sent on the first frequency domain resource, and the first signal is used to occupy the first frequency domain resource. Alternatively, it can be understood that the first signal is used to initialize the channel occupation time in the first frequency domain resource, which can allow the device on the resource pool to perform sidelink communication in the subsequent time unit.

In combination with the second aspect, in some possible implementation methods, the duration between the start time of sending the first signal on the first frequency domain resource and the start time of the first time unit is a first duration, the duration of the first signal is a second duration, and the first duration and the second duration are configured or pre-configured by the configuration information of the resource pool.

It should be understood that when multiple devices on the resource pool need to send a first signal on the same frequency domain resources, the first duration and the second duration are configured or pre-configured through the configuration information of the resource pool, so as to align the time for each device on the resource pool to send the first signal, thereby avoiding CCA interference between each device.

In combination with the second aspect, in some possible implementation methods, the first time unit includes a first time sub-unit, the first time sub-unit includes an automatic gain control AGC time domain resource, before determining to perform Sidelink communication on a frequency domain resource in a first frequency domain resource, a first signal is sent on the first frequency domain resource before the AGC time domain resource, and the first signal is used to occupy the first frequency domain resource.

Based on the above technical solution, before the device on the resource pool uses the first frequency domain resource to perform sidelink communication on the first time unit, it is necessary to send a first signal before the AGC time domain resource in the first time unit, and in particular, the AGC time domain resource belongs to the first time subunit in the first time unit. The first signal is used to occupy the first frequency domain resource. Alternatively, it can be understood that the first signal is used to initialize the channel occupancy time in the first frequency domain resource, which can allow the device to perform sidelink communication on the subsequent time unit.

In conjunction with the second aspect, in some possible implementations, the first signal is sent at a first moment, the first moment is a moment in a first time unit, the duration between the first moment and the start moment of the first time unit is a third duration, the duration of the first signal is a second duration, and the second duration and the third duration are configured or preconfigured by the configuration information of the resource pool. Alternatively, the first signal is sent at a second moment, the second moment is a moment before the start moment of the first time unit, the duration between the second moment and the start moment of the first time unit is a fourth duration, the duration of the first signal is a fifth duration, and the fourth duration and the fifth duration are configured or preconfigured by the configuration information of the resource pool.

It should be understood that the second moment may be a moment after the start moment of the first time subunit, the duration between the second moment and the start moment of the first time subunit is the sixth duration, wherein the duration of the first signal is the fifth duration, and the first time subunit is a time subunit in the time unit before the first time unit (for example, the last time subunit that can be used for Sidelink communication). The sixth duration and the fifth duration are configured or preconfigured by the configuration information of the resource pool.

Based on the above technical solution, the sending time of the first signal can be before the starting time of the first time unit or after the starting time of the first time unit. Different sending times can be configured according to the capabilities of different devices. Specific configuration information, such as the second duration, the third duration, the fourth duration, the fifth duration, and the sixth duration can be included in the resource pool configuration information or pre-configured to ensure that the device on the resource pool sends the first signal at a specific location, thereby avoiding interference caused by the channel clean assessment CCA of other devices.

In combination with the second aspect, in some possible implementations, the time interval between the start time of the AGC time domain resource and the start time of the first time unit is configured or pre-configured by configuration information of the resource pool.

Based on the above technical solution, through the configuration information configuration or pre-configuration of the resource pool, the time interval between the start time of the AGC time domain resource and the start time of the first time unit ensures that the AGC time domain positions of each device on the resource pool are aligned, thereby ensuring that each receiving device can obtain a more accurate AGC result.

In combination with the second aspect, in some possible implementation methods, when a device on the resource pool accesses the first frequency domain resource using a frame structure device FBE-based method, the FBE method is divided into at least two fixed frames on the time domain resources, and each of the at least two fixed frames includes a channel occupied time and a channel idle time, and the first time unit corresponds to the starting position of the channel occupied time in one of the at least two fixed frames.

Based on the above technical solution, when the device on the resource pool accesses the first frequency domain resource in the FBE mode, the device uses the first frequency domain The resource performs Sidelink communication in the first time unit, and the first time unit corresponds to the starting position of the channel occupancy time in the fixed frame divided in the FBE mode. This ensures that the device on the resource uses the first frequency domain resource and can perform Sidelink communication in the first time unit, thereby ensuring the performance of data transmission and avoiding service interruption.

In combination with the second aspect, in some possible implementations, the first time unit corresponds to the first bit with a first value in the bit map.

Based on the above technical solution, when the device on the resource pool determines that the first frequency domain resource can perform Sidelink communication in the first time unit, the first time unit corresponds to the first bit in the bitmap with the first value. Thus, the device on the resource pool can determine the starting position of the channel occupation time in a fixed frame, and send the first signal at the starting position to occupy the channel.

In conjunction with the second aspect, in some possible implementations, the first time unit corresponds to a first time unit of a time unit that can be used for sidelink communication after a third time unit among at least one third time unit.

Based on the above technical solution, the first time unit that can be used for Sidelink communication after one of the at least one third time unit corresponding to the first time unit enables the device on the resource pool to determine the starting position of the channel occupation time in a fixed frame, and send the first signal at the starting position to occupy the channel.

In combination with the second aspect, in some possible implementations, before sending the first signal, a channel cleanliness assessment is performed on the first frequency domain resource to determine that the first frequency domain resource is in an idle state.

Based on the above technical solution, before a device on the resource pool uses the first frequency domain resource to send a first signal, it first performs a channel cleanliness assessment on the first frequency domain resource and determines that the first frequency domain resource is idle. The device will send the first signal on the first frequency domain resource. The device on the resource pool sends the first signal when it determines that the first frequency domain resource is not occupied by other devices and does not cause interference to other devices.

According to a third aspect, a resource management device is provided, the device comprising: a processing unit, configured to determine a resource pool, the resource pool comprising at least one frequency domain resource, the at least one frequency domain resource being associated one-to-one with at least one indication information, each indication information in the at least one indication information being used to indicate whether the frequency domain resource associated therewith can be used for Sidelink communication in at least one time unit; the processing unit, further configured to perform Sidelink communication in a first time unit using a first frequency domain resource according to the at least one indication information, the at least one frequency domain resource comprising a first frequency domain resource, the at least one time unit comprising a first time unit, the first indication information indicating that the first frequency domain resource can be used for Sidelink communication in the first time unit, and the first indication information being associated with the first frequency domain resource.

In combination with the third aspect, in some possible implementation methods, at least one indication information includes second indication information, the second indication information includes a second bit map, at least one time unit includes a second time unit, the second time unit corresponds to the second bit in the second bit map, the second indication information is associated with the second frequency domain resource, when the second bit is a first value, the second indication information is used to indicate that the second frequency domain resource can be used for Sidelink communication in the second time unit, when the second bit is a second value, the second indication information is used to indicate that the second frequency domain resource cannot be used for Sidelink communication in the second time unit, wherein the second time unit is any one of the at least one time unit, and the second frequency domain resource is any one of the at least one frequency domain resource.

In combination with the third aspect, in some possible implementations, the first indication information includes a first bit map, and the bit in the first bit map corresponding to the first time unit is a first value.

In combination with the third aspect, in some possible implementation methods, at least one indication information includes third indication information, the third indication information includes cycle length and offset information, the cycle length and offset information are used to determine at least one third time unit, the third indication information is associated with a third frequency domain resource, and the third indication information is used to indicate that the third frequency domain resource cannot be used for Sidelink communication in at least one third time unit.

In combination with the third aspect, in some possible implementations, the third indication information also includes a first length, and the first length is used to determine at least one third time unit. The processing unit is also used to determine that the third frequency domain resource cannot be used for Sidelink communication in at least one third time unit based on the cycle length, offset information and the first length.

In combination with the third aspect, in some possible implementations, the processing unit is further used to send a first signal on a first frequency domain resource before a first time unit, and the first signal is used to occupy the first frequency domain resource.

In combination with the third aspect, in some possible implementation methods, the duration between the start time of sending the first signal on the first frequency domain resource and the start time of the first time unit is a first duration, the duration of the first signal is a second duration, and the first duration and the second duration are configured or pre-configured by the configuration information of the resource pool.

In combination with the third aspect, in some possible implementation methods, the first time unit includes a first time sub-unit, the first time sub-unit includes an automatic gain control AGC time domain resource, and before the processing unit determines to perform Sidelink communication on a frequency domain resource in the first frequency domain resource, the transceiver unit is used to send a first signal on the first frequency domain resource before the AGC time domain resource, and the first signal is used to occupy the first frequency domain resource.

In combination with the third aspect, in some possible implementation methods, the processing unit is also used to send a first signal on a first frequency domain resource before the AGC time domain resource, including: the first signal is sent at a first moment, the first moment is a moment in a first time unit, the duration between the first moment and the start moment of the first time unit is a third duration, the duration of the first signal is a second duration, the second duration and the third duration are configured or pre-configured by the configuration information of the resource pool, or, the first signal is sent at a second moment, the second moment is a moment before the start moment of the first time unit, the duration between the second moment and the start moment of the first time unit is a fourth duration, the duration of the first signal is a fifth duration, and the fourth duration and the fifth duration are configured or pre-configured by the configuration information of the resource pool.

In combination with the third aspect, in some possible implementations, the time interval between the start time of the AGC time domain resource and the start time of the first time unit is configured or pre-configured by configuration information of the resource pool.

In combination with the third aspect, in some possible implementations, the first time unit corresponds to the first bit with a first value in the bit map.

In conjunction with the third aspect, in some possible implementations, the first time unit corresponds to a first time unit of a time unit that can be used for sidelink communication after a third time unit among at least one third time unit.

In combination with the third aspect, in some possible implementations, the transceiver unit is used to, before sending the first signal, the processing unit is also used to perform a channel cleanliness assessment on the first frequency domain resource to determine that the first frequency domain resource is in an idle state.

In combination with the third aspect, in some possible implementation methods, when the processing unit accesses the first frequency domain resource using a frame structure device FBE-based method, the FBE method is divided into at least two fixed frames on the time domain resources, and each of the at least two fixed frames includes a channel occupied time and a channel idle time, and the first time unit corresponds to the starting position of the channel occupied time in one of the at least two fixed frames.

In a fourth aspect, a resource management device is provided, the device being used to execute the method provided in the first aspect and/or the second aspect. Specifically, the device may include a unit and/or module, such as a processing unit and/or a transceiver unit (or a communication unit), for executing the method provided in any one of the above implementations of the first aspect and the second aspect.

In one implementation, the device is a communication device (such as a terminal device, or a network device). When the device is a communication device, the communication unit may be a transceiver or a transceiver unit, or an input/output interface; the processing unit may be at least one processor. Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In another implementation, the device is a chip, chip system or circuit used in a communication device (such as a terminal device or a network device). When the device is a chip, chip system or circuit used in a communication device, the communication unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, chip system or circuit; the processing unit may be at least one processor, processing circuit or logic circuit.

In a fifth aspect, a communication device is provided, comprising: a memory for storing programs; and at least one processor for executing computer programs or instructions stored in the memory to execute a method provided in any one of the implementations of the first and second aspects above.

In one implementation, the apparatus is a communication device (such as a terminal device or a network device).

In another implementation, the device is a chip, a chip system or a circuit used in a communication device (such as a terminal device or a network device).

In a sixth aspect, the present application provides a processor for executing the methods provided in the above aspects.

For the operations such as sending and acquiring/receiving involved in the processor, unless otherwise specified, or unless they conflict with their actual function or internal logic in the relevant description, they can be understood as operations such as processor output and input, or as sending and receiving operations performed by the radio frequency circuit and antenna, and this application does not limit this.

In a seventh aspect, a computer-readable storage medium is provided, which stores a program code for execution by a device, wherein the program code includes a method for executing any one of the above-mentioned implementation modes in the first aspect or the second aspect.

In an eighth aspect, a computer program product comprising instructions is provided. When the computer program product is run on a computer, the computer is enabled to execute the method provided in any one of the implementation modes of the first and second aspects above.

In a ninth aspect, a chip is provided, the chip including a processor and a communication interface, the processor reads instructions stored in a memory through the communication interface, and executes the method provided by any one of the implementation modes in the first and second aspects above.

Optionally, as an implementation method, the chip also includes a memory, in which a computer program or instructions are stored, and the processor is used to execute the computer program or instructions stored in the memory. When the computer program or instructions are executed, the processor is used to execute the method provided in any one of the implementation methods of the first aspect or the second aspect above.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a system architecture applicable to an embodiment of the present application.

FIG. 2 is a schematic diagram of a Sidelink frame structure provided in an embodiment of the present application.

FIG. 3 is a schematic flowchart of a resource management method 300 provided in an embodiment of the present application.

FIG4 is a schematic diagram of channel access in a FBE mode provided in an embodiment of the present application.

FIG. 5 is a schematic flowchart of a resource management method 500 provided in an embodiment of the present application.

FIG6 is a schematic diagram of a resource pool configuration provided in an embodiment of the present application.

FIG. 7 is a schematic diagram of a frame structure provided in an embodiment of the present application.

FIG8 is a schematic diagram of another frame structure provided in an embodiment of the present application.

FIG. 9 is a schematic diagram of another frame structure provided in an embodiment of the present application.

FIG10 is a schematic diagram of another frame structure provided in an embodiment of the present application.

FIG11 is a schematic diagram of another frame structure provided in an embodiment of the present application.

FIG12 is a schematic diagram of another frame structure provided in an embodiment of the present application.

FIG13 is a schematic diagram of another frame structure provided in an embodiment of the present application.

FIG. 14 is a schematic diagram of a communication device 1400 provided in an embodiment of the present application.

FIG. 15 is a schematic diagram of another communication device 1500 provided according to an embodiment of the present application.

FIG. 16 is a schematic diagram of a chip system 1600 provided according to an embodiment of the present application.

Detailed ways

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

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), the ^3rd generation partnership project (3GPP) related cellular system, worldwide interoperability for microwave access (WiMAX) communication system, wireless guarantee (wifi), fifth generation (5G) system or new radio (NR), sixth generation (6G) system, etc.

The technical solution of the embodiment of the present application can also be applied to LTE sidelink system, LTE evolution sidelink, 5G sidelink system or 5G evolution sidelink system, future communication system (such as the sixth generation mobile communication system). The technical solution provided by the present application can be applied to device to device (D2D) communication, vehicle to everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and Internet of Things (IoT), communication system or other communication system.

The technical solution of the embodiment of the present application can also be applied to short-range wireless communication systems, such as wireless personal area network (WPAN). WPAN can be used for communication between digital auxiliary devices in a small range such as telephones, computers, and auxiliary devices. Technologies supporting wireless personal area networks include Bluetooth, ZigBee, ultra-wideband (UWB), infrared data association (IrDA) connection technology, home radio frequency (HomeRF), etc. Or sidelink communication system, WiFi communication system, etc. This application does not make specific limitations on this.

With the development of wireless communication technology, mobile communication networks are gradually evolving towards 5G NR systems. In the 5G NR system, sidelink technology is also introduced, that is, terminal devices can communicate directly using wireless resources. As shown in Figure 1, Sidelink is different from the uplink and downlink between the terminal device and the base station. Sidelink refers to the link between terminal devices and terminal devices, corresponding to the PC5 interface to realize the communication mode of direct communication of short-range services between terminal devices.

Among them, similar to the Sidelink technology in the 4G LTE system, the Sidelink technology of the above-mentioned 5G NR system can be applied to vehicle networking scenarios, as well as to scenarios such as smart factories. The physical channels of the Sidelink of the NR system are mainly composed of the physical sidelink control channel (PSCCH), the physical sidelink shared channel (PSSCH), the physical sidelink broadcast channel (PSBCH) and the physical sidelink feedback channel (PSFCH). The first three physical channels already exist in the Sidelink of the LTE system, and PSFCH is the Sidelink technology of the NR system to support hybrid automatic repeat request (hybrid automatic repeat request, The PSSCH channel is mainly used for the transmission of Sidelink data information; the PSCCH channel is mainly used for the transmission of Sidelink control information, that is, it is used to transmit Sidelink control information (SCI) messages. In addition, there are two synchronization signals: primary sidelink synchronization signal (PSSS) and secondary sidelink synchronization signal (SSSS).

It should be understood that Sidelink can be applied to D2D technology and can be used to ensure the effective communication of public safety information (public safety communication). The concept of V2X was introduced in the LTE system, and Sidelink is also part of the V2X standardization. In the 3GPP protocol, Sidelink resource allocation based on air interface assistance and PC5 interface management is regarded as the next research focus. This research helps to meet the V2X requirements for communication performance such as latency and reliability in the NR system, and is of great significance for users who can only communicate with V2X through Sidelink to independently select communication scenarios in resource mode. At the same time, Sidelink can also be used in scenarios such as smart factories, such as using Sidelink to achieve direct communication between controllers and sensors or transmission devices, and to achieve low-latency and high-reliability communication between industrial equipment.

In the 3GPP related protocols, the Sidelink terminal device will be configured with the Bandwidthpart where it works and the resource pool (resource pool) to determine the frequency domain resources and time domain resources that the Sidelink can use. Among them, the time domain resources include the time units (such as time slots) that the Sidelink terminal device can use and the time sub-units (such as symbols) that can be used in the corresponding time units. Among them, the time units involved in the embodiments of the present application mainly take the time slots as an example, and the time sub-units mainly take the symbols as an example to introduce the technical solutions in the present application. The time units in the present application can also be frames, sub-frames, etc., and the present application does not make specific limitations on this.

As an example, as shown in (1) of FIG2 , in Sidelink communication, the terminal device is allocated a 6-frequency domain unit in the frequency domain (for example, a frequency domain unit can be a subchannel), and the terminal device is allocated a resource with a period of 8 time slots in the time domain, and 6 time slots in each period can be used for Sidelink communication. In the process of Sidelink communication, the subchannel is the minimum granularity of the frequency domain resource when the terminal device transmits data. The high layer will configure the number of physical resource blocks (PRBs) that a subchannel can contain in the resource pool. As shown in (2) of FIG2 , each time slot can contain 14 symbols, and it can be further configured that it can be used for Sidelink communication starting from symbol 3 (which can be determined by the high layer parameter startSlsymbols). Since not all time slots can be used for Sidelink communication, the concept of logical time slots can be introduced in a Sidelink resource pool. A logical time slot corresponds to a physical time slot that can be used for Sidelink communication, and the number index of the logical time slot can be continuous. It should be understood that, unless otherwise specified in the present application, a time slot can be understood as a logical time slot, and similarly, a time unit can also be understood as a logical time unit.

At present, general enterprises may not have dedicated spectrum resources, so they can consider using unlicensed spectrum (also known as unlicensed spectrum) to deploy Sidelink networks to enable direct communication between devices in scenarios such as factories. Although there may be other networks such as Wi-Fi or Bluetooth on the unlicensed spectrum, due to the particularity of factory scenarios, the deployment of other networks (such as Wi-Fi) can be avoided through manual control, thereby ensuring that other networks in the unlicensed spectrum in a specific area have less interference with the Sidelink network.

However, according to relevant regulations, devices that use unlicensed frequency bands for communication must access the channel in a listen before talk (LBT) manner, that is, before sending data, the device needs to first listen to the channel (referred to as frequency domain resources in the embodiment of the present application) (e.g., energy detection) to determine whether there are other devices transmitting data on the channel. After determining that no other devices are transmitting on the channel, the device can send its own data.

As an example, a common access channel method in an unlicensed frequency band is load-based equipment (LBE) access. For example, as shown in Figure 3, in the LBE mode, the device needs to randomly generate a backoff counter (for example, the initial value of the backoff counter is N, N is a positive integer) before accessing the channel, and then the device performs a channel clear assessment (CCA), or channel listening. That is, in an unlicensed frequency band, before a device needs to transmit data on a certain channel, it first receives on this channel. If no other device is found to transmit data on this channel after a given time, the channel is determined to be idle. If other devices are found to transmit data on this channel, the channel is determined to be non-idle. The CCA can effectively avoid conflict problems on the channel.

Among them, CCA is in sensing slots (for example, the duration of a sensing slot is 9us). When a device performs CCA and determines that the channel is being used by other devices, the device maintains the initial value N of the backoff counter unchanged and continues to perform CCA; when the device determines based on CCA that the channel is not being used by other devices, that is, the channel is idle, the device subtracts 1 from the initial value N of the backoff counter. If N-1 is not equal to 0, the device continues CCA until N-1 is equal to 0, and then the device can perform sidelink communication through the channel.

It should be understood that the initial value N of the backoff counter is usually randomly generated from a window length, which is related to the channel access priority class (CAPC) corresponding to the signal to be sent and the resource that has occurred in the unlicensed frequency band. As an example, Table 1 shows the window lengths used by devices of different priorities in uplink transmission in the NR-Unlicensed system.

Table 1

As shown in Table 1 above, taking CAPC=1 as an example, the device can first randomly select a number from 0-3 as the initial value N of the backoff counter, and then perform CCA. The device determines whether N needs to be reduced by 1 based on whether the channel is idle. When the initial value N of the backoff counter is reduced to 0, the device sends data through the channel. If the data sent by the device on the channel conflicts with other devices, it can be retransmitted through the scheduling device, and the above-mentioned window length is increased, and the probability of N increasing will also increase. For example, in Table 1, the device may need to randomly select a value from 0-7 as the initial value N of the backoff counter when it generates a random number next time.

It can be seen that when deploying the Sidelink-Unlicensed network using the above LBE method, the device needs to perform CCA of multiple sensing slots before accessing the channel, which may cause a large delay in the device accessing the channel. At the same time, the data transmitted before the device transmits may block the subsequent LBT, thereby reducing the transmission efficiency of the entire network.

In view of the technical problem that in the LBE mode, the device may generate a large delay when accessing the channel, thereby affecting the transmission efficiency of the entire network. In the unlicensed frequency band, in addition to being able to access the channel through LBE, the device can also access the channel through frame-based equipment (FBE).

Among them, the FBE method is to use one channel as a unit, and the device performs channel CCA and data transmission according to a fixed cycle. In particular, at the beginning of each fixed cycle, only one sensing slot CCA needs to be executed, and there is no need to execute CCAs of multiple sensing slots.

FIG4 shows a schematic diagram of a fixed frame period structure based on the FBE mode. A device in the FBE mode can be divided into periodic fixed frame periods in time. At the start of each fixed frame period, the device needs to perform a CCA of a sensing slot to determine whether the channel is idle. When the device determines that the channel is idle, it can immediately send a signal at the start of the fixed frame period. The time that the device occupies the channel in a fixed frame period is called the channel occupancy time (COT). According to relevant regulations, the COT cannot occupy an entire fixed frame period, that is, the device must leave a certain idle period to prevent the device from monopolizing the channel.

In some regulations, the idle time must be greater than 100us and at least 5% of the COT duration. If a device sends a signal at the start of a fixed frame period, multiple signal transmissions can be performed in this period; if a device needs to transmit multiple signals, when the interval between two consecutive signal transmissions is greater than 16us, it needs to perform a CCA of the sensing time slot before the next transmission; when the interval between two consecutive signal transmissions does not exceed 16us, the next transmission does not need to perform CCA.

According to the FBE-based channel access method described in Figure 4, the idle time required to be reserved within the fixed frame period must be greater than 100us and at least 5% of the COT duration. If the device needs to transmit a signal during the idle time within the fixed frame period, the device must wait until the COT period of the next fixed frame period to transmit the signal, which will cause a large delay in signal transmission, which may further affect the continuity of the transmission service.

The above-mentioned device accesses the channel based on FBE to transmit signals. During the idle time within a fixed frame period, when the device has a signal to transmit, the transmission of data may cause a large delay, resulting in the problem of discontinuity of related services. The embodiment of the present application provides a method for resource configuration, which can solve the delay problem that may occur when the above-mentioned device transmits data, thereby ensuring the continuity of the service and improving the transmission efficiency of the entire network device. Among them, the transmission involved in the embodiment of the present application can be sending or receiving. This application does not make any specific limitation on this.

It should be noted that the steps included in the method shown in the embodiment of the present application can be independently completed by one device, or can be implemented by multiple different devices respectively (for example, in a distributed system, multiple different devices respectively complete different steps), and the present application does not specifically limit this. In the embodiment of the present application, the first device is taken as an example to introduce the method provided in the embodiment of the present application in detail, which does not have any limiting effect on the method provided in the present application.

It should also be noted that the method shown in this application can be executed by a device (such as a sending device or a receiving device, a network device or a terminal device), or can also be executed by a chip or circuit of a device, and this application does not limit this. For ease of description, this application uses the first device execution as an example for illustration.

FIG5 is a schematic diagram of a method 500 for resource configuration provided in an embodiment of the present application. As shown in FIG5 , the method includes the following steps:

S510, the first device determines a resource pool, the resource pool includes at least one frequency domain resource, the at least one frequency domain resource is associated one-to-one with at least one indication information, and each indication information in the at least one indication information is used to indicate whether the frequency domain resource associated therewith can be used for Sidelink communication in at least one time unit.

Optionally, a frequency domain resource may be a 20 MHz channel, or a resource block set (RB set). That is, the resource pool may be a Sidelink resource pool, which may include one or more channels in the frequency domain, or may include one or more RB sets.

In one possible implementation, the at least one indication information includes second indication information, and the second indication information includes a second bit map. The at least one time unit includes a second time unit, and the second time unit corresponds to a second bit in the bit map. The second time unit is any one of the at least one time unit, and the second frequency domain resource can be any one of the at least one frequency domain resource. When the second bit is a first value, the second indication information is used to indicate that the second frequency domain resource can be used for Sidelink communication in the second time unit, or when the second bit is a second value, the second indication information is used to indicate that the second frequency domain resource cannot be used for Sidelink communication in the second time unit.

It should be understood that the first value can be 1 or 0, the second value can be 1 or 0, and the first value is different from the second value. For example, when the first value is 1, the second value is 0; or when the first value is 0, the second value is 1, and this application does not make specific limitations on this.

It should also be understood that the length of the bitmap may be extended, thereby being able to determine whether the first frequency domain resources corresponding to subsequent time units can be used for Sidelink communication.

As an example, the resource pool includes frequency domain resource #1 and frequency domain resource #2, frequency domain resource #1 is associated with indication information #1, and frequency domain resource #2 is associated with indication information #2. Indication information #1 includes bitmap #1, and each bit in the bitmap #1 corresponds to one or more time units. For example, when bitmap #1 is "0111", taking the first value as 1 and the second value as 0 as an example, time unit #0 corresponds to the first bit (or bit 0) in the bitmap, time unit #1 corresponds to the second bit (or bit 1) in the bitmap, time unit #2 corresponds to the third bit (or bit 2) in the bitmap, and time unit #3 corresponds to the fourth bit (or bit 3) in the bitmap, so frequency domain resource #1 is not available for Sidelink communication in time unit #0, and frequency domain resource #1 can be used for Sidelink communication in time unit #1, time unit #2, and time unit #3. In addition, since the length of the bitmap is 4, it can be further determined that time unit #0+4i corresponds to the first bit (or bit 0) in the bitmap, time unit #1+4i corresponds to the second bit (or bit 1) in the bitmap, time unit #2+4i corresponds to the third bit (or bit 2) in the bitmap, and time unit #3+4i corresponds to the fourth bit (or bit 3) in the bitmap, where i is any integer greater than or equal to 0. That is, frequency domain resource #1 is not available for Sidelink communication in time unit #4, and frequency domain resource #1 is available for Sidelink communication in time unit #5, time unit #6, and time unit #7. Similarly, frequency domain resource #1 is not available for Sidelink communication in time unit #8, and frequency domain resource #1 is available for Sidelink communication in time unit #9, time unit #10, and time unit #11... The first device can also adopt a similar method to determine whether frequency domain resource 2 is available for Sidelink communication in each time unit according to indication information #2.

In another possible implementation, at least one indication information includes third indication information, and the third indication information includes cycle length and offset information, wherein the cycle length and offset information are used to determine at least one third time unit, and the third indication information is associated with a third frequency domain resource, and the third indication information is used to indicate that the third frequency domain resource cannot be used for Sidelink communication in the at least one third time unit.

As an example, the resource pool includes frequency domain resource #3 and frequency domain resource #4, frequency domain resource #3 is associated with indication information #3, and frequency domain resource #4 is associated with indication information #4. For example, the cycle length included in indication information #3 is 10 time units, and the offset information includes an offset value (offset) of 1 time unit. The device determines at least one third time unit according to the cycle length and offset information in indication information #3. The time units are time units 1, 11, 21, etc., that is, frequency domain resource #3 cannot be used for Sidelink communication in these time units. Alternatively, the cycle length included in indication information #3 is 10 time units, and the offset included in the offset information is 0. According to the cycle length and the offset information, at least one third time unit determined is a time unit 0, 10, 20, etc., that is, frequency domain resource #3 cannot be used for Sidelink communication in these time units. The first device can also adopt a similar method to determine whether frequency domain resource #4 can be used for Sidelink communication in each time unit according to indication information #4.

In another possible implementation, the third indication information further includes a first length, and the first length is used to determine the at least one third time unit. The first device determines that the third frequency domain resource cannot be used for Sidelink communication in at least one third time unit according to the cycle length, the offset information and the first length.

As an example, the frequency domain resource #3 and the frequency domain resource #4 included in the resource pool, the frequency domain resource #3 is associated with the indication information #3, and the frequency domain resource #4 is associated with the indication information #4. For example, the cycle length included in the indication information #3 is 10 time units, the offset information includes an offset value (offset) of 1 time unit, and the first length is 2. The device determines at least one third time unit as time units 1, 2, 11, 12, 21, 22, etc. according to the cycle length and offset information and the first length in the indication information #3, that is, the frequency domain resource #3 cannot be used for Sidelink communication in these time units. Alternatively, the cycle length included in the indication information #3 is 8 time units, the offset included in the offset information is 0, and the first length is 1. According to the cycle length and the offset information and the first length, the at least one third time unit determined is a time unit 0, 8, 16, etc., that is, the frequency domain resource #3 cannot be used for Sidelink communication in these time units. The first device can also adopt a similar method to determine whether the frequency domain resource #4 can be used for Sidelink communication in each time unit according to the indication information #4.

It should be understood that when the first device is configured with the resource pool, the time units that cannot be used for Sidelink communication on different frequency domain resources can be staggered. That is, if the frequency domain resources in the resource pool are frequency domain resources in the unlicensed frequency band, and the first device accesses these frequency domain resources in the FBE mode, the above-mentioned one frequency domain resource can correspond to a 20MHz channel, and the time unit that cannot be used for Sidelink transmission on the above-mentioned one frequency domain resource can correspond to an idle period (Idle period) of a fixed frame period, so that the idle periods corresponding to different frequency domain resources are staggered. When the first device has data to be transmitted during the channel idle period on a frequency domain resource, the first device can determine other frequency domain resources that can be used for Sidelink transmission according to at least one indication information. For example, FIG. 6 is a schematic diagram of a time unit configured in a resource pool. As shown in FIG. 6, all frequency domain resources corresponding to the time unit 4 configured in the resource pool are unavailable. As shown in FIG. 6, the period configured in the indication information associated with the frequency domain resource #1 is 8 time units, the offset is 0, and the first length is 1. According to the period, offset and first length, it can be determined that frequency domain resource #1 cannot be used for Sidelink communication in time units such as time unit 0 and 8. For example, frequency domain resource #2 in Figure 6, the period configured in the indication information associated with frequency domain resource #2 is 8 time units, the offset is 1, and the first length is 1. According to the period, offset and first length, it can be determined that frequency domain resource #2 cannot be used for Sidelink communication in time units such as time unit 1 and 9. It can be found from Figure 6 that, except for time unit 4 in Figure 6, there is at least one frequency domain resource that can be used for Sidelink transmission in other time units.

In another possible implementation, the configuration information of the resource pool may also include time domain resource indication information of the resource pool, such as the configuration information used to determine whether the frequency domain resources included in the entire resource pool are available in a time unit in the background technology. For specific details, refer to the indication information of time domain resources in the Sidelink resource pool in the Rel-16 related protocol. Then, on this basis, at least one frequency domain resource in the resource pool is associated with at least one indication information, and each indication information in the at least one indication information is used to indicate whether the frequency domain resource associated with it can be used for Sidelink communication in at least one time unit.

For example, in FIG6 , the Sidelink resource pool includes frequency domain resource #1 and frequency domain resource #2 in the frequency domain, and the time domain resource indication information of the resource pool in the resource pool configuration information is a bitmap "1111011111", which can determine that the entire resource pool is not available for Sidelink communication in time unit 4 (corresponding to the gray block in FIG6 ). In addition, for frequency domain resource #1, the cycle length in its associated indication information is 7 time units, the offset is 0, and the first length is 1. After removing time units 4, 14, etc., it can be determined that the first time unit of every 7 time units on frequency domain resource #1 is not available for Sidelink communication, that is, it can be determined that frequency domain resource #1 cannot be used for Sidelink communication in time units 0, 8, etc. (corresponding to the black block on frequency domain resource #1 in FIG6 ). In addition, for frequency domain resource #2, the period length in its associated indication information is 7 time units, the offset is 1, and the first length is 1. After removing time units 4, 14, and other time units, it can be determined that the second time unit in every 7 time units on frequency domain resource #2 cannot be used for Sidelink communication, that is, it can be determined that at time units 1, 9, and other time units, frequency domain resource #2 cannot be used for Sidelink communication (corresponding to the black block on frequency domain resource #2 in Figure 6).

S520: The first device uses the first frequency domain resource to perform sidelink communication in the first time unit according to at least one indication information.

The at least one frequency domain resource includes the first frequency domain resource, the at least one time unit includes the first time unit, and the at least one indication information includes the first indication information, the first indication information is used to indicate that the first frequency domain resource can be used in the first time unit. In Sidelink communication, the first indication information is associated with the first frequency domain resource.

It should be understood that the first device determines to use the first frequency domain resource for Sidelink communication in the first time unit according to the at least one indication information. The first indication information in the at least one indication information is used to indicate that the first frequency domain resource can be used for Sidelink communication in the first time unit. The first indication information is associated with the first frequency domain resource. Optionally, when the first indication information includes a first bitmap, the first time unit corresponds to the first bit in the first bitmap that is the first value.

Optionally, when the first indication information includes period and offset information, the first time unit corresponds to a first time unit of a time unit that can be used for Sidelink communication after a third time unit in at least one third time unit.

In the case where the first device accesses the first frequency domain resource in the FBE mode, the time domain resource in the FBE mode may be divided into at least two fixed frames. Each of the at least two fixed frames includes a signal occupied time COT and a channel idle time, as shown in FIG. 4 above, and a fixed frame period includes COT and idle time, which will not be described in detail here.

It should be understood that when the first device accesses the first frequency domain resource in an FBE manner, the first device uses the first frequency domain resource to perform Sidelink communication on a first time unit. The first time unit may correspond to the starting position of the channel occupancy time in a fixed frame. Therefore, when the first indication information includes a first bitmap, the length of the bitmap may correspond to the length of a COT, and the time unit corresponding to the first bit with the first value in the bitmap may correspond to the starting time unit of a COT, that is, may correspond to the first time unit. Similarly, when the first indication information includes period and offset information, the period may correspond to a COT, at least a third time unit may correspond to the idle time in the COT, and the first time unit that can be used for Sidelink communication after the third time unit may correspond to the starting time unit of the next COT, that is, may also correspond to the first time unit.

According to the method shown in FIG. 5 above, the first device determines a resource pool, which includes at least one frequency domain resource, and at least one indication information is associated one-to-one with the at least one frequency domain resource. The first device uses the first frequency domain resource to perform Sidelink communication in the first time unit according to the at least one indication information. In an idle time period of a certain frequency domain resource, the first device has data to be transmitted, and the first device does not need to wait for the channel occupancy time of the frequency domain resource to arrive. The first device can directly determine other frequency domain resources that can be used to transmit data in the time period according to at least one indication information, and the first device uses the frequency domain resource for Sidelink communication. This reduces the delay of the first device in transmitting data, thereby ensuring business continuity and improving the transmission efficiency of the network.

It should be understood that the steps included in the method shown in FIG. 5 may be independently completed by a device on the resource pool (for example, the first device), or different steps may be completed by multiple devices on the resource pool, or the steps included in FIG. 5 may be independently completed by all devices on the resource pool. When multiple devices on the resource pool implement the method shown in FIG. 5, all devices in the resource pool that are configured with the configuration information of the resource pool can complete the method shown in FIG. 5, and the configuration information of the configured resource pool is the same, so that the available resources determined by the devices in the resource pool are the same, that is, the interconnection between devices is guaranteed, and the transmission performance of the entire network is improved.

Optionally, based on the method shown in FIG. 5 , before the first device uses the first frequency domain resource to perform sidelink communication in the first time unit in step S520, the method 500 may further include the following steps:

S5A0: The first device sends a first signal on a first frequency domain resource before a first time unit, where the first signal is used to occupy the first frequency domain resource.

Optionally, the first signal may be a sequence, and the sequence may be configured by resource pool configuration information, or determined by the first device itself according to its own implementation.

It should be understood that before the first device uses the first frequency domain resource for Sidelink communication, the first device first uses the first frequency domain resource to send a first signal. The first signal is used to occupy the first frequency domain resource, or it can be understood that the first signal is used to initialize the channel occupancy time COT in a fixed frame period. Thus, when the first device has no data to send at the starting position corresponding to the COT of the fixed frame period, the first device can still send data at other positions of the fixed frame period, and only needs to perform a CCA of a sensing slot before sending.

In one possible implementation, the duration between the start time of sending the first signal on the first frequency domain resource and the start time of the first time unit is the first duration, and the duration of the first signal is the second duration. The first duration and the second duration are configured or preconfigured by the configuration information of the resource pool. Among them, the first device sends the first signal on the first frequency domain resource before the first time unit. For specific examples, please refer to the detailed description of the frame structure shown in Figures 8 to 13 of this application, which will not be repeated here.

In a possible implementation, before the first device sends the first signal, the first device performs a channel cleanliness assessment on the first frequency domain resource and determines that the first frequency domain resource is in an idle state, so that the first device can send the signal under the premise of meeting regulatory requirements.

It should be understood that when multiple devices on a resource pool need to send a first signal on the same frequency domain resource (for example, in the same 20MHz channel or the same RB set), by configuring or pre-configuring the first duration through the configuration information of the resource pool, the time for each device to send the first signal can be aligned, thereby avoiding mutual CCA interference between the devices on the resource pool.

Optionally, based on the method shown in FIG. 5 , when the first time unit includes a first time subunit, and the first time subunit includes an automatic gain control (AGC) time domain resource, before the first device uses the first frequency domain resource to perform Sidelink communication on the first time unit in step S520, the method 500 may further include the following steps:

S5B0: The first device sends a first signal on a first frequency domain resource before the AGC time domain resource, where the first signal is used to occupy the first frequency domain resource.

Among them, the first time subunit of each Sidelink transmission is an automatic gain control AGC time subunit, such as an AGC symbol. The AGC time subunit can be used by the receiving end to adjust the gain coefficient of its own power amplifier and the parameters of the analog to digital converter (ADC) according to the received power, which is used for the reception of subsequent control channels and data channels.

It should be understood that the first device sends a first signal on the first frequency domain resource before using the first frequency domain resource for Sidelink communication in the first time unit, and before the AGC time domain resource in the first time unit, and the first signal is used to occupy the first frequency domain resource, or it can be understood that the first signal is used to initialize the channel occupancy time COT in a fixed frame period. Among them, the time domain resource and the AGC time domain resource for the first device to send the first signal are both within the first time unit, so that when the first device has no data to send at the starting position corresponding to the COT of the fixed period, the first device can still send data at other positions of the fixed period, and only needs to perform a CCA of a sensing slot before sending.

It should also be understood that in step S5B0, sending the first signal on the first frequency domain resource may have the following two modes:

method one

The first device sends a first signal on a first frequency domain resource before the AGC time domain resource. The first signal is sent at a first moment, the first moment is a moment in the first time unit, the duration between the first moment and the start moment of the first time unit is a third duration, the duration of the first signal is a second duration, and the second duration and the third duration are configured or preconfigured by the configuration information of the resource pool.

Method 2

The first device sends a first signal on a first frequency domain resource before the AGC time domain resource. The first signal is sent at a second moment, the second moment is a moment before the start moment of the first time unit, the duration between the second moment and the start moment of the first time unit is a fourth duration, wherein the duration of the first signal is a fifth duration, and the fourth duration and the fifth duration are configured or preconfigured by the configuration information of the resource pool.

Equivalently, the second moment may be a moment after the start moment of the first time subunit, and the duration between the second moment and the start moment of the first time subunit is the sixth duration, wherein the duration of the first signal is the fifth duration, and the first time subunit is a time subunit in a time unit before the first time unit (for example, the last time subunit that can be used for Sidelink communication). The sixth duration and the fifth duration are configured or preconfigured by the configuration information of the resource pool.

It should be understood that when both the above-mentioned method 1 and method 2 are completed by the first device, the second duration, the third duration, the fourth duration, the fifth duration, and the sixth duration can be included in the resource pool configuration information or pre-configured, that is, it can ensure that the first device sends the first signal at a specific location, thereby avoiding interference with the channel clean assessment CCA of other devices. When multiple devices on the resource pool need to send the first signal on the same frequency domain resource (for example, in the same 20MHz channel or the same RB set) using the above-mentioned method 1 and method 2, the time for each device to send the first signal is configured or pre-configured through the configuration information of the resource pool, which can avoid mutual CCA interference between the devices on the resource pool.

It should also be understood that in the above step S5B0, the time interval between the start time of the AGC time domain resource and the start time of the first time unit may also be configured or pre-configured by the configuration information of the resource pool. This application does not make specific limitations on this. For example, the start time position of the AGC in the first time subunit in the first time unit is configured in the resource pool configuration information.

Next, how to send the first signal through step S5A0 and step S5B0 will be described in detail. As shown in Figure 7, between two fixed frame periods connected on any frequency domain resource, the specific process of the idle time period transitioning to the channel occupancy time COT, wherein time unit 1 may correspond to the idle time portion of the previous fixed frame period on frequency domain resource #1, and time unit 2 may correspond to the COT portion of the next fixed frame period on frequency domain resource #1. The gray part corresponds to the specific process of the idle time period transitioning to COT, and the gray may all belong to time unit 1 or may all belong to time unit 2; it may also partially belong to time unit 1 and partially belong to time unit 2 (as shown in Figure 7). The transition stage mainly includes the following five steps:

Step 1: The first device performs a transmission-reception conversion (Tx->Rx).

For frequency domain resource #1, the first device has idle time in time unit 1, but for frequency domain resource #2, it can correspond to the COT of frequency domain resource 2, that is, time unit 1 of frequency domain resource #2 of the first device may be sending Sidelink data to other devices, but after the idle time of frequency domain resource #1 ends, the first device needs to perform CCA to determine that frequency domain resource #1 is in an idle state before sending the first signal on frequency domain resource #1.

Since CCA is a receiving behavior, and it is highly likely that the first device shares a RF channel or transceiver module on frequency domain resource #1 and frequency domain resource #2, it is necessary to switch the RF channel from the sending mode to the receiving mode, and further perform CCA on the frequency domain resource #1.

Step 2: The first device performs CCA on frequency domain resource #1.

It should be understood that the first device needs to determine whether the frequency domain resource #1 is in an idle state. After the first device determines that the frequency domain resource #1 is in an idle state according to the CCA, the first device sends the first signal on the frequency domain resource #1.

It should also be understood that the duration of the first device performing CCA on frequency domain resource #1 includes the time for the first device to receive, process, and convert the signal.

Step 3: The first device sends a first signal.

It should be understood that when the first device performs CCA to determine that the frequency domain resource #1 is in an idle state, the first device then sends the first signal to occupy the frequency domain resource #1, or to start the next COT.

Step 4: The first device performs a send-receive conversion (Tx->Rx).

It should be understood that after the first device sends the first signal on frequency domain resource #1, the first device may not send other data, and here the first device needs to switch to the receiving mode to detect whether other devices have sent control signals or data signals. The first device switches from the sending mode to the receiving mode.

Step 5: The first device performs AGC adjustment.

It should be understood that after the first device switches to the receiving mode, the first device needs to receive a signal for adjusting the AGC.

In a possible implementation, the time when the first device switches from the sending mode to the receiving mode, or the time when the first device switches from the receiving mode to the sending mode, may have the following settings:

(1) The time for switching between transmit and receive modes is 13us;

(2) The time for switching between transmit and receive modes is 2 to 5 us.

In another implementation, the duration of the AGC adjustment may be set as follows:

(1) For all subcarrier spacings (SCS), the AGC duration is at most 35us;

(2) For SCS = 15 kHz, the AGC duration is at most 35 us. For SCS = 30 kHz, the AGC duration is at most 18 us.

With respect to the above-mentioned switching time of the transceiver mode, the setting of the duration of the AGC adjustment, the end position of the idle time in each fixed frame period and the start position of the COT are determined, and the embodiment of the present application provides the frame structures that may appear in the following three situations, as shown below:

Case 1

Take the case where the transceiver mode conversion time is 13us and the AGC adjustment time is 35us for all SCSs (i.e., based on the premise of ensuring the worst terminal device capability) as an example.

Example 1:

Assuming that the subcarrier spacing is 15kHz, usually the length of a time subunit (such as a symbol) is 70us, the transceiver mode conversion time is 13us, and the AGC adjustment time is 35us, as shown in Figure 8, which is a frame structure diagram provided by an embodiment of the present application. Between two connected fixed frame periods, the sum of the time consumed in the five steps of the specific process of the idle time period transitioning to the channel occupancy time COT, excluding step three (the first device sends the first signal), is the sum of the transceiver conversion time (Tx->Rx), CCA time (sensing), transceiver conversion time and AGC time: 13us+9us+13us+35us=70us.

Since the length of a time subunit is 70us, if only one time subunit is used, there will be no spare time to send the first signal, so at least two time subunits are required to complete the above five steps. At the same time, in order not to change the traditional AGC time subunit position (usually symbol 0 in a time slot), the first four steps of the above five steps can be placed in the last time subunit (such as sym13 in Figure 8) of the time unit before the COT starting position (that is, the last time unit of the idle time in the previous fixed frame cycle). Send the first signal (such as the sequence in Figure 8) in the last time subunit of the previous time unit. Among them, the starting position of the sequence is not earlier than 22us in the time subunit, and the ending position is not later than 57us in the time subunit.

It should be understood that this example 1 can be understood as a specific method of the above step S5A0.

Optionally, the configuration information of the resource pool configures the starting position of the first signal to be 48us (i.e., the first duration) from the starting position of the first time unit (i.e., the starting position of Sym0), and the duration of the first signal to be 35us (i.e., the second duration). The configuration information configures the starting position of the first signal to be located at 22us in the last time subunit in its time unit (i.e., the previous time unit of the first time unit), or configures the starting position of the first signal to be located at 932us after the starting moment of its time unit.

Example 2:

Assuming that the subcarrier spacing is 30kHz, the length of a time subunit is usually 35us, the transceiver mode conversion time is 13us, and the AGC adjustment time is 35us, as shown in Figure 9, which is a schematic diagram of a frame structure provided by an embodiment of the present application. In the five steps of the specific process of transitioning from the idle time period to the channel occupancy time COT, the sum of the time consumption of step 3 (the first device sends the first signal) is removed, that is, the sum of the transceiver conversion time (Tx->Rx), CCA time (sensing), transceiver conversion time and AGC time: 13us+9us+13us+35us=70us.

Since the length of a time subunit is 35us, the above five steps require at least three time subunits to complete. At the same time, in order not to change the traditional AGC time subunit position (usually symbol 0 in a time slot), the first four steps of the above five steps are placed in the last two time subunits (sym12, sym13 in Figure 9) of the time unit before the COT starting position (that is, the last time unit of the idle time in the previous fixed frame period). The first signal (such as the sequence in Figure 9) is sent in the last two time subunits of the previous time unit, wherein the starting position of the sequence is not earlier than the starting position of the last time subunit (sym13 in Figure 9), and the ending position is not later than 22us in the last time subunit.

It should be understood that Example 2 can be understood as another specific method of the above step S5A0.

Optionally, the configuration information of the resource pool configures the starting position of the first signal to be 35us (i.e., the first duration) from the starting position of the first time unit (i.e., the starting position of Sym0), and the duration of the first signal is 22us (i.e., the second duration). Equivalently, the configuration information of the resource pool configures the starting position of the first signal to be located at 0us in the last time subunit of the time unit in which it is located (i.e., the time unit before the first time unit), or configures the starting position of the first signal to be located at 455us after the starting moment of the time unit in which it is located. Case 2

For example, the time for switching the transmit and receive modes is 13us, and for SCS=15kHz, the adjustment time of AGC is 35us; for SCS=30kHz, the adjustment time of AGC is 18us.

It should be understood that when the transceiver mode conversion time is 13us, for SCS=15kHz, the AGC adjustment time is 35us. The frame structure in this case is similar to the example in the above case one. For details, please refer to the detailed introduction of the example in the above case one (Figure 8), which will not be repeated here.

Assuming that the subcarrier spacing is 30kHz, the length of a time subunit is usually 35us, and the adjustment time of AGC is 18us, as shown in Figure 10, which is another frame structure schematic diagram provided by an embodiment of the present application. Between two connected fixed frame periods, the sum of the time consumed in the five steps of the specific process of the idle time period transitioning to the channel occupancy time COT, excluding step three (the first device sends the first signal), is the sum of the sending and receiving conversion time, CCA time, sending and receiving conversion time and AGC time: 13us+9us+13us+18us=53us.

Since the length of a time sub-unit is 35us, the above five steps require at least two time sub-units to complete. As shown in FIG10 , the starting position of sending the first signal is no earlier than 22us of the last time sub-unit of the time unit before the COT starting position (i.e., the last time unit of the idle time in the previous fixed frame period), and the ending position is no later than 4us of the first time sub-unit in the COT time.

It should be understood that the example in the second situation can be understood as a specific method of the second method in the above step S5B0.

Optionally, the configuration information of the resource pool configures the starting position of the first signal to be 13us (i.e., the fourth duration) from the starting position of the first time unit (i.e., the starting position of Sym0), and the duration of the first signal is 17us (i.e., the fifth duration). Equivalently, the configuration information of the resource pool configures the starting position of the first signal to be located at 22us (i.e., the sixth duration) in the last time subunit in the time unit in which it is located (i.e., the previous time unit of the first time unit), or configures the starting position of the first signal to be located at 477us after the starting moment of the time unit in which it is located.

It should be understood that, since the first device generally needs to perform AGC on the entire bandwidth when performing AGC adjustment, in the example shown in FIG10 , the position of AGC is adjusted accordingly for all 20 MHz frequency domain resources on the frequency domain resource.

Take the case where the transceiver mode conversion time is 2us to 5us, the AGC adjustment time is 35us for SCS=15kHz, and the AGC adjustment time is 35us for SCS=30kHz as an example.

Example 1

Assuming that the subcarrier spacing SCS = 15kHz, the length of a time subunit is usually 70us, the transceiver mode conversion time is 5us, and the AGC adjustment time is 35us, as shown in Figure 11, a frame structure diagram provided by an embodiment of the present application. Between two connected fixed frame periods, the sum of the time consumed in the five steps of the specific process of the idle time period transitioning to the channel occupancy time COT, excluding step three (the first device sends the first signal), is the sum of the transceiver conversion time, CCA time, transceiver conversion time and AGC time: 5us+9us+5us+35us=54us.

When the above five steps are completed using two time sub-units, as shown in FIG11, the first four steps of the above five steps are placed in the last time sub-unit (such as sym13 in FIG11) of the time unit before the COT starting position (i.e., the last time unit of the idle time in the previous fixed frame period). The fifth step of adjusting the AGC is placed in the first time sub-unit of the first time unit at the COT starting position (such as sym0 in FIG11). The frame structure of this example one is similar to the frame structure in the above case one and case two, so sending the first signal (sequence) can take up more time. For example, as shown in FIG11, the duration of sending the first signal sequence is 51us, and the adjustment time of the AGC can take up an entire time sub-unit length of 70us.

Optionally, the configuration information of the resource pool configures the starting position of the first signal to be 56us (i.e., the first duration) from the starting position of the first time unit (i.e., the starting position of Sym0), and the duration of the first signal is 51us (i.e., the second duration). Equivalently, the configuration information of the resource pool configures the starting position of the first signal to be located at 14us in the last time subunit in the time unit in which it is located (i.e., the time unit before the first time unit), or configures the starting position of the first signal to be located at 924us after the starting moment of the time unit in which it is located.

Example 2:

Assuming that the subcarrier spacing is SCS=15kHz, the length of a time subunit is usually 70us, the transceiver mode conversion time is 5us, and the AGC adjustment time is 35us. FIG12 is another frame structure schematic diagram provided in an embodiment of the present application. Between two connected fixed frame periods, the sum of the time consumed in the five steps in the specific process of the idle time period transitioning to the channel occupancy time COT, excluding step three (the first device sends the first signal), is the sum of the transceiver conversion time, the CCA time, the transceiver conversion time and the AGC time: 5us+9us+5us+35us=54us. The above five steps can be combined into one time subunit, which can be the first time subunit of the first time unit at the starting position of COT (for example, sym0 in FIG12). In the frame structure shown in FIG12, the occupied time sequence of sending the first signal is 16us, and the occupied time of AGC adjustment is 35us.

It should be understood that Example 2 can be understood as a specific method of Method 1 in the above step S5B0.

Optionally, the configuration information of the resource pool configures the starting position of the first signal to be 14us (i.e., the third duration) from the starting position of the first time unit (i.e., the starting position of Sym0), and the duration of the first signal is 16us (i.e., the second duration). Equivalently, the configuration information of the resource pool configures the starting position of the first signal to be 14us in the time unit (i.e., the first time unit) in which it is located, or configures the starting position of the first signal to be 14us after the starting moment of the time unit in which it is located. Example 3

Assuming that the subcarrier spacing is SCS = 30kHz, the length of a time subunit is 35us, the transceiver mode conversion time is 5us, and the AGC adjustment time is 35us, as shown in Figure 13, another frame structure diagram provided by an embodiment of the present application. Between two connected fixed frame periods, the sum of the time consumed in the five steps of the specific process of the idle time period transitioning to the channel occupancy time COT, excluding step three (the first device sends the first signal), is the sum of the transceiver conversion time, CCA time, transceiver conversion time and AGC time: 5us + 9us + 5us + 35us = 54us.

The length of a time subunit is 35us, and the above five steps can be completed using two time subunits. As shown in Figure 13, the first four steps of the above five steps are placed in the last time subunit (sym13 in Figure 13) of the time unit before the COT starting position (that is, the last time unit of the idle time in the previous fixed frame period). The fifth step is to adjust the AGC and place it in the first time subunit of the first time unit at the COT starting position (sym0 in Figure 13). Among them, according to the frame structure shown in Figure 13, it can be seen that the occupied time sequence of sending the first signal is 16us.

It should be understood that Example 3 can be understood as a specific method of the above step S5A0.

Optionally, the configuration information of the resource pool configures the starting position of the first signal to be 21us (i.e., the first duration) from the starting position of the first time unit (i.e., the starting position of Sym0), and the duration of the first signal is 16us (i.e., the second duration). Equivalently, the configuration information of the resource pool configures the starting position of the first signal to be 14us in the last time subunit in the time unit in which it is located (i.e., the time unit before the first time unit), or configures the starting position of the first signal to be 469us after the starting moment of the time unit in which it is located.

Case 4

Taking the case where the transceiver mode conversion time is 2us to 5us, the AGC adjustment time is 35us for SCS=15kHz, and the AGC adjustment time is 18us for SCS=30kHz as an example, the specific frame structure can refer to Examples 1-3 in Case 3, which will not be repeated here.

It should be noted that in the examples of Case 1, Case 2, Case 3 and Case 4 above, the time position of the sequence of the first signal sent by all devices on the resource pool should be the same, or the error should be within a certain range. If the positions of the sequences of the first signal sent by different devices are different, then the time range of the sequence of the first signal sent by the device may fall within the time range of the CCA of other devices for sensing, which may cause other devices to perceive that the channel is not idle (i.e., occupied). The device cannot start the next COT.

It should also be noted that the position and duration of the first signal may also take other values according to other capabilities of the device, and this application does not make specific limitations.

It can be understood that some optional features in the embodiments of the present application may not depend on other features in some scenarios, and may also be combined with other features in some scenarios, without limitation.

It can also be understood that the solutions in the various embodiments of the present application can be used in reasonable combination, and the explanations or descriptions of the various terms appearing in the embodiments can be mutually referenced or explained in the various embodiments, without limitation.

It can also be understood that in the above-mentioned various method embodiments, the methods and operations implemented by a device (terminal device or network device) can also be implemented by components of the device (such as chips or circuits) without limitation.

Corresponding to the methods given in the above-mentioned method embodiments, the embodiments of the present application also provide corresponding devices, which include modules for executing the corresponding methods in the above-mentioned method embodiments. The module can be software, hardware, or a combination of software and hardware. It can be understood that the technical features described in the above-mentioned method embodiments are also applicable to the following device embodiments.

Referring to FIG. 14, as an example, FIG. 14 is a schematic diagram of a communication device 1400 provided in an embodiment of the present application. The device 1400 includes a transceiver unit 1410 and a processing unit 1420. The transceiver unit 1410 can be used to implement corresponding communication functions. The transceiver unit 1410 can also be called a communication interface or a communication unit. The processing unit 1420 can be used to process data or information.

Optionally, the device 1400 further includes a storage unit, which can be used to store instructions and/or data, and the processing unit 1420 can read the instructions and/or data in the storage unit so that the device implements the aforementioned various method embodiments.

In one possible design, the device 1400 can be used to execute the actions performed by the first device in each of the method embodiments described above. In this case, the device 1400 can be a terminal device or a network device, or can be a component of a terminal device or a network device. The transceiver unit 1410 is used to execute the transceiver-related operations of the first device in the method embodiments described above, and the processing unit 1420 is used to execute the processing-related operations of the first device in the method embodiments described above.

For example, processing unit 1420 is used to determine a resource pool, the resource pool includes at least one frequency domain resource, the at least one frequency domain resource is associated one-to-one with at least one indication information, and each indication information in the at least one indication information is used to indicate whether the frequency domain resource associated with it can be used for Sidelink communication in at least one time unit; processing unit 1420 is also used to use the first frequency domain resource to perform Sidelink communication in the first time unit according to the at least one indication information, the at least one frequency domain resource includes the first frequency domain resource, the at least one time unit includes the first time unit, the first indication information indicates that the first frequency domain resource can be used for Sidelink communication in the first time unit, and the first indication information is associated with the first frequency domain resource.

Optionally, at least one indication information includes second indication information, the second indication information includes a second bit map, at least one time unit includes a second time unit, the second time unit corresponds to the second bit in the second bit map, the second indication information is associated with the second frequency domain resource, when the second bit is a first value, the second indication information is used to indicate that the second frequency domain resource can be used for Sidelink communication in the second time unit, when the second bit is a second value, the second indication information is used to indicate that the second frequency domain resource cannot be used for Sidelink communication in the second time unit, wherein the second time unit is any one of the at least one time unit, and the second frequency domain resource is any one of the at least one frequency domain resource.

Optionally, the first indication information includes a first bit map, and the bit in the first bit map corresponding to the first time unit is a first value.

Optionally, at least one indication information includes third indication information, the third indication information includes cycle length and offset information, the cycle length and offset information are used to determine at least one third time unit, the third indication information is associated with a third frequency domain resource, and the third indication information is used to indicate that the third frequency domain resource cannot be used for Sidelink communication in at least one third time unit.

Optionally, the third indication information also includes a first length, and the first length is used to determine at least one third time unit. The processing unit is further used to determine that the third frequency domain resource cannot be used for Sidelink communication in at least one third time unit based on the cycle length, offset information and the first length.

Optionally, the processing unit 1420 is further used to send a first signal on a first frequency domain resource before the first time unit, and the first signal is used to occupy the first frequency domain resource.

Optionally, the duration between the start time of sending the first signal on the first frequency domain resource and the start time of the first time unit is a first duration, the duration of the first signal is a second duration, and the first duration and the second duration are configured or pre-configured by the configuration information of the resource pool.

Optionally, the first time unit includes a first time sub-unit, the first time sub-unit includes an automatic gain control AGC time domain resource, and before the processing unit determines to perform Sidelink communication on the frequency domain resources in the first frequency domain resources, the transceiver unit is used to send a first signal on the first frequency domain resources before the AGC time domain resources, and the first signal is used to occupy the first frequency domain resources.

Optionally, the processing unit 1420 is also used to send a first signal on the first frequency domain resource before the AGC time domain resource, including: the first signal is sent at a first moment, the first moment is a moment in a first time unit, the duration between the first moment and the start moment of the first time unit is a third duration, the duration of the first signal is a second duration, the second duration and the third duration are configured or pre-configured by the configuration information of the resource pool, or, the first signal is sent at a second moment, the second moment is a moment before the start moment of the first time unit, the duration between the second moment and the start moment of the first time unit is a fourth duration, the duration of the first signal is a fifth duration, and the fourth duration and the fifth duration are configured or pre-configured by the configuration information of the resource pool.

Optionally, the time interval between the start time of the AGC time domain resource and the start time of the first time unit is configured or pre-configured by configuration information of the resource pool.

Optionally, the first time unit corresponds to the first bit with the first value in the bit map.

Optionally, the first time unit corresponds to a first time unit of a time unit that can be used for Sidelink communication after a third time unit among the at least one third time unit.

Optionally, before the transceiver unit 1410 sends the first signal, the processing unit is further configured to perform a channel cleanliness assessment on the first frequency domain resource to determine that the first frequency domain resource is in an idle state.

Optionally, when the processing unit 1420 accesses the first frequency domain resource in a manner based on a frame structure device FBE, the FBE manner is divided into at least two fixed frames on the time domain resources, each of the at least two fixed frames includes a channel occupied time and a channel idle time, and the first time unit corresponds to the starting position of the channel occupied time in one of the at least two fixed frames.

It should be understood that the device 1400 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing at least one software or firmware program, a merged logic circuit and/or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the device 1400 can be specifically a terminal device in the above-mentioned embodiment, and can be used to execute the various processes and/or steps corresponding to the terminal device in the above-mentioned method embodiments; or, the device 1400 can be specifically a network device in the above-mentioned embodiment, and can be used to execute the various processes and/or steps corresponding to the network device in the above-mentioned method embodiments. To avoid repetition, it will not be repeated here.

The apparatus 1400 of each of the above schemes has the function of implementing the corresponding steps performed by the communication device (such as a terminal device, and also such as a network device) in the above method. The function can be implemented by hardware, or by hardware executing the corresponding software implementation. The hardware or software includes at least one module corresponding to the above function; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor to respectively perform the transceiver operations and related processing operations in each method embodiment.

In addition, the transceiver unit 1410 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit.

It should be noted that the device in FIG. 14 may be the device in the aforementioned embodiment, or may be a chip or a chip system, such as a system on chip (SoC). The transceiver unit may be an input and output circuit or a communication interface; the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip. This is not limited here.

Referring to FIG. 15 , as an example, FIG. 15 is a schematic diagram of another communication device 1500 provided in an embodiment of the present application. The device 1500 includes a processor 1510, and the processor 1510 is coupled to a memory 1520. Optionally, the device 1500 also includes a memory 1520. The memory 1520 is used to store computer programs or instructions and/or data, and the processor 1510 is used to execute the computer programs or instructions stored in the memory 1520, or read the data stored in the memory 1520, so as to execute the methods in the above method embodiments.

Optionally, there is at least one processor 1510.

Optionally, there is at least one memory 1520.

Optionally, the memory 1520 is integrated with the processor 1510 or provided separately.

Optionally, as shown in Fig. 15, the device 1500 further includes a transceiver 1530, and the transceiver 1530 is used for receiving and/or sending signals. For example, the processor 1510 is used for controlling the transceiver 1530 to receive and/or send signals.

As a solution, the apparatus 1500 is used to implement the operations performed by the device in each of the above method embodiments.

For example, the processor 1510 is used to execute the computer program or instructions stored in the memory 1520 to implement the relevant operations of the device in each method embodiment above. For example, the method executed by the device in the embodiment shown in FIG5 .

It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other Other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory and/or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM). For example, a RAM may be used as an external cache. By way of example and not limitation, RAM includes the following forms: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM) and direct rambus RAM (DR RAM).

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

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

Referring to FIG. 16 , as an example, FIG. 16 is a schematic diagram of a chip system 1600 provided in an embodiment of the present application. The chip system 1600 (or also referred to as a processing system) includes a logic circuit 1610 and an input/output interface 1620.

Among them, the logic circuit 1610 can be a processing circuit in the chip system 1600. The logic circuit 1610 can be coupled to the storage unit and call the instructions in the storage unit so that the chip system 1600 can implement the methods and functions of each embodiment of the present application. The input/output interface 1620 can be an input/output circuit in the chip system 1600, outputting information processed by the chip system 1600, or inputting data or signaling information to be processed into the chip system 1600 for processing.

Specifically, for example, if the chip system 1600 is installed in a terminal device, the logic circuit 1610 is coupled to the input/output interface 1620, and the input/output interface 1620 can input the wake-up signal to the logic circuit 1610 for processing.

As a solution, the chip system 1600 is used to implement the operations performed by the first device in each of the above method embodiments.

For example, the logic circuit 1610 is used to implement the processing-related operations performed by the first device in the above method embodiment; the input/output interface 1620 is used to implement the sending and/or receiving-related operations performed by the first device in the above method embodiment.

An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the methods executed by the device in the above-mentioned method embodiments are stored.

For example, when the computer program is executed by a computer, the computer can implement the method executed by the terminal device in each embodiment of the above method.

For another example, when the computer program is executed by a computer, the computer can implement the method performed by the network device in each embodiment of the above method.

An embodiment of the present application also provides a computer program product, comprising instructions, which, when executed by a computer, implement the methods performed by a terminal device or a network device in the above-mentioned method embodiments.

An embodiment of the present application also provides a communication system, which includes the terminal device and the network device in the above embodiments.

The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.

In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as at least two units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes at least one computer instruction. When the computer program instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. For example, the computer can be a personal computer, a server, or a network device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. The command can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes at least one available medium integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD), etc. For example, the aforementioned available medium includes, but is not limited to: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A resource management method, characterized by comprising:

The first device determines a resource pool, where the resource pool includes at least one frequency domain resource, where the at least one frequency domain resource is associated one-to-one with at least one indication information, where each indication information in the at least one indication information is used to indicate whether the frequency domain resource associated with it can be used for sidelink communication in at least one time unit;

The first device uses the first frequency domain resource to perform sidelink communication in a first time unit according to the at least one indication information, the at least one frequency domain resource includes the first frequency domain resource, the at least one time unit includes the first time unit, the first indication information in the at least one indication information is used to indicate that the first frequency domain resource can be used for sidelink communication in the first time unit, and the first indication information is associated with the first frequency domain resource.
The method according to claim 1, characterized in that the at least one indication information includes second indication information, the second indication information includes a second bitmap, the at least one time unit includes a second time unit, the second time unit corresponds to a second bit in the second bitmap, and the second indication information is associated with a second frequency domain resource.

When the second bit is a first value, the second indication information is used to indicate that the second frequency domain resource can be used for Sidelink communication in the second time unit.

When the second bit is a second value, the second indication information is used to indicate that the second frequency domain resource cannot be used for Sidelink communication in the second time unit.

The second time unit is any one of the at least one time unit, and the second frequency domain resource is any one of the at least one frequency domain resource.
The method according to claim 2 is characterized in that the first indication information includes a first bit map, and the bit corresponding to the first time unit in the first bit map is the first value.
The method according to claim 1 is characterized in that the at least one indication information includes third indication information, the third indication information includes a cycle length and offset information, the cycle length and the offset information are used to determine at least one third time unit, and the third indication information is associated with a third frequency domain resource.

The third indication information is used to indicate that the third frequency domain resource cannot be used for Sidelink communication in the at least one third time unit.
The method according to claim 4, characterized in that the third indication information further includes a first length, and the first length is used to determine the at least one third time unit,

The first device determines, according to the cycle length, the offset information, and the first length, that the third frequency domain resource cannot be used for Sidelink communication in the at least one third time unit.
The method according to any one of claims 1 to 5, characterized in that the method further comprises:

The first device sends a first signal on a first frequency domain resource before the first time unit, and the first signal is used to occupy the first frequency domain resource.
The method according to claim 6 is characterized in that the duration between the start time of sending the first signal on the first frequency domain resource and the start time of the first time unit is a first duration, the duration of the first signal is a second duration, and the first duration and the second duration are configured or pre-configured by the configuration information of the resource pool.
The method according to any one of claims 1 to 5, characterized in that the first time unit includes a first time subunit, the first time subunit includes an automatic gain control AGC time domain resource, and before the first device performs Sidelink communication on a frequency domain resource in the first frequency domain resource, the method further includes:

The first device sends a first signal on the first frequency domain resource before the AGC time domain resource, and the first signal is used to occupy the first frequency domain resource.
The method according to claim 8, characterized in that the first device sends the first signal on the first frequency domain resource before the AGC time domain resource, comprising:

The first signal is sent at a first moment, the first moment is a moment in the first time unit, the duration between the first moment and the start moment of the first time unit is a third duration, the duration of the first signal is a second duration, and the second duration and the third duration are configured or preconfigured by the configuration information of the resource pool,

or,

The first signal is sent at a second moment, the second moment is a moment before the start moment of the first time unit, the duration between the second moment and the start moment of the first time unit is a fourth duration, the duration of the first signal is a fifth duration, and the fourth duration and the fifth duration are configured or pre-configured by the configuration information of the resource pool.
The method according to claim 8 or 9 is characterized in that the time interval between the start time of the AGC time domain resource and the start time of the first time unit is configured or pre-configured by the configuration information of the resource pool.
The method according to any one of claims 2, 6 to 10 is characterized in that the first time unit corresponds to the first bit in the bit map that has the first value.
The method according to any one of claims 4 to 10, characterized in that the first time unit corresponds to a first time unit of a time unit that can be used for sidelink communication after a third time unit among the at least one third time unit.
The method according to any one of claims 6 to 12, characterized in that before the first device sends the first signal, the method further comprises:

The first device performs a channel cleanliness assessment on the first frequency domain resource and determines that the first frequency domain resource is in an idle state.
The method according to any one of claims 1 to 13 is characterized in that the at least one frequency domain resource belongs to an unlicensed frequency band, and when the first device accesses the first frequency domain resource using a frame structure device FBE-based method, the FBE method is divided into at least two fixed frames on the time domain resources, and each of the at least two fixed frames includes a channel occupied time and a channel idle time, and the first time unit corresponds to the starting position of the channel occupied time in one of the at least two fixed frames.
A resource management device, characterized in that the device comprises:

a processing unit, configured to determine a resource pool, the resource pool comprising at least one frequency domain resource, the at least one frequency domain resource being associated one-to-one with at least one indication information, each indication information in the at least one indication information being used to indicate whether the frequency domain resource associated therewith can be used for sidelink communication in at least one time unit;

The processing unit is further used to use the first frequency domain resource to perform sidelink communication in a first time unit according to the at least one indication information, the at least one frequency domain resource includes the first frequency domain resource, the at least one time unit includes the first time unit, the first indication information indicates that the first frequency domain resource can be used for sidelink communication in the first time unit, and the first indication information is associated with the first frequency domain resource.
The apparatus according to claim 15, wherein the at least one indication information includes second indication information, the second indication information includes a second bitmap, the at least one time unit includes a second time unit, the second time unit corresponds to a second bit in the second bitmap, and the second indication information is associated with a second frequency domain resource.

When the second bit is a first value, the second indication information is used to indicate that the second frequency domain resource can be used for Sidelink communication in the second time unit.

When the second bit is a second value, the second indication information is used to indicate that the second frequency domain resource cannot be used for Sidelink communication in the second time unit.

The second time unit is any one of the at least one time unit, and the second frequency domain resource is any one of the at least one frequency domain resource.
The device according to claim 16 is characterized in that the first indication information includes a first bit map, and the bit corresponding to the first time unit in the first bit map is the first value.
The device according to claim 15, characterized in that the at least one indication information includes third indication information, the third indication information includes a cycle length and offset information, the cycle length and the offset information are used to determine at least one third time unit, and the third indication information is associated with a third frequency domain resource.

The third indication information is used to indicate that the third frequency domain resource cannot be used for Sidelink communication in the at least one third time unit.
The device according to claim 18, characterized in that the third indication information further includes a first length, and the first length is used to determine the at least one third time unit,

The processing unit is further configured to determine, based on the cycle length, the offset information and the first length, that the third frequency domain resource cannot be used for Sidelink communication in the at least one third time unit.
The device according to any one of claims 15 to 19 is characterized in that the processing unit is also used to send a first signal on a first frequency domain resource before the first time unit, and the first signal is used to occupy the first frequency domain resource.
The device according to claim 20 is characterized in that the duration between the start time of sending the first signal on the first frequency domain resource and the start time of the first time unit is a first duration, the duration of the first signal is a second duration, and the first duration and the second duration are configured or pre-configured by the configuration information of the resource pool.
The device according to any one of claims 15 to 19, characterized in that the first time unit includes a first time subunit, the first time subunit includes an automatic gain control AGC time domain resource, before the processing unit determines to perform Sidelink communication on a frequency domain resource in the first frequency domain resource,

The transceiver unit is used to send a first signal on the first frequency domain resource before the AGC time domain resource, and the first signal is used to occupy the first frequency domain resource.
The apparatus according to claim 22, characterized in that the processing unit is further configured to send a first signal on the first frequency domain resource before the AGC time domain resource, comprising:

The first signal is sent at a first moment, the first moment is a moment in the first time unit, the duration between the first moment and the start moment of the first time unit is a third duration, the duration of the first signal is a second duration, and the second duration and the third duration are configured or preconfigured by the configuration information of the resource pool,

or,

The first signal is sent at a second moment, the second moment is a moment before the start moment of the first time unit, the duration between the second moment and the start moment of the first time unit is a fourth duration, the duration of the first signal is a fifth duration, and the fourth duration and the fifth duration are configured or pre-configured by the configuration information of the resource pool.
The device according to claim 22 or 23 is characterized in that the time interval between the start time of the AGC time domain resource and the start time of the first time unit is configured or pre-configured by the configuration information of the resource pool.
The device according to any one of claims 16, 20 to 24 is characterized in that the first time unit corresponds to the first bit in the bit map that has the first value.
The device according to any one of claims 18 to 24, characterized in that the first time unit corresponds to a first time unit of a time unit that can be used for sidelink communication after a third time unit among the at least one third time unit.
The device according to any one of claims 20 to 26 is characterized in that before the transceiver unit is used to send the first signal, the processing unit is also used to perform a channel cleanliness assessment on the first frequency domain resource to determine that the first frequency domain resource is in an idle state.
The device according to any one of claims 15 to 27 is characterized in that, when the processing unit accesses the first frequency domain resource in a manner based on a frame structure device FBE, the FBE manner is divided into at least two fixed frames on the time domain resource, each of the at least two fixed frames includes a channel occupied time and a channel idle time, and the first time unit corresponds to the starting position of the channel occupied time in one of the at least two fixed frames.
A communication device, characterized in that it comprises a processor, wherein the processor is used to execute a computer program or instruction stored in a memory so that the device performs the method according to any one of claims 1 to 14.
The device according to claim 29, characterized in that the device further comprises the memory and/or the communication interface, wherein the communication interface is coupled to the processor,

The communication interface is used to input and/or output information.
A computer-readable storage medium, characterized in that a computer program or instruction is stored on the computer-readable storage medium, and when the computer program or instruction is executed on a communication device, the communication device executes the method as described in any one of claims 1 to 14.
A computer program product, characterized in that the computer program product comprises a computer program or instructions for executing the method according to any one of claims 1 to 14.
A chip, characterized in that the chip is coupled to a memory and is used to read and execute program instructions stored in the memory to implement the method as claimed in any one of claims 1 to 14.