Method for multiplexing services with different priority levels

Abstract

A wireless communication method for use in a wireless device includes: sending data in a first time period, and performing a first operation in a second time period within the first time period.

Description

Technical Field

[0001] The present application is generally directed to wireless communications. Background Art

[0002] The first phase of the standardization for the fifth generation of mobile communication technology (5G, also known as New Radio (NR)) has been completed. According to the trend of standardization and technology development, the 5G system is committed to researching features such as faster speed (Gbps), large-scale links (1M / Km 2 ), ultra-low latency, higher reliability, and 100 times power efficiency to support the changes in new requirements. In NR, NR-based unlicensed spectrum access (NR-U) technology is considered to have great application prospects in the fields of Internet of Things (IoT), factory automation, etc. However, NR-U technology still has many unresolved issues that need to be discussed. Summary of the invention

[0003] The present application relates to a method, system and device for multiplexing services with different priority levels.

[0004] The present disclosure relates to a wireless communication method for use in a wireless device. The wireless communication method includes:

[0005] Sending data in a first period, and

[0006] The first operation is performed in a second time period, the second time period being within the first time period.

[0007] Various embodiments may preferably implement the following features:

[0008] Preferably, the first operation includes: reducing power for transmitting data in the second time period.

[0009] Preferably, the first operation includes: stopping sending data in the second time period.

[0010] Preferably, data in the second period is delayed.

[0011] Preferably, the data in the second period is punctured.

[0012] Preferably, the wireless communication method further includes:

[0013] detecting a first power in a channel in which data is transmitted in a third time period that is after the second time period and within the first time period, and

[0014] The second operation is performed based on the first power in a fourth period that is after the third period and within the first period.

[0015] Preferably, the first power is not greater than a first threshold, and the second operation includes: sending data in the fourth time period at a power at which the data was sent before the second time period.

[0016] Preferably, the first power is greater than a first threshold and not greater than a second threshold, and the second operation includes: sending data with reduced transmission power in a fourth time period.

[0017] Preferably, the wireless communication method further includes:

[0018] detecting a second power in the channel in a fifth time period that is subsequent to the fourth time period and within the first time period, and

[0019] The third operation is performed based on the second power in a sixth period that is after the fifth period and within the first period.

[0020] Preferably, the time delay between the third period and the fifth period is configured through radio resource control RRC signaling, indicated through downlink control information DCI, or set to a default value.

[0021] Preferably, the second power is greater than the first threshold and not greater than the second threshold, and the third operation includes:

[0022] sending data at a reduced power in a sixth time period,

[0023] detecting a third power in the channel in a seventh time period that is after the sixth time period and within the first time period, and

[0024] The fourth operation is performed based on the third power in an eighth period that is after the seventh period and within the first period.

[0025] Preferably, the second power is not greater than the first threshold, and the third operation includes: sending data in the sixth time period at the power at which the data was sent before the second time period.

[0026] Preferably, the first power is greater than a first threshold, and the second operation includes: stopping sending data in a fourth time period.

[0027] Preferably, the wireless communication method further includes:

[0028] detecting a fourth power in the channel in a ninth time period that is subsequent to the third time period and within the first time period, and

[0029] The fifth operation is performed based on the fourth power in a tenth period that is after the ninth period and within the first period.

[0030] Preferably, the time delay between the third time period and the ninth time period is configured through RRC signaling or indicated through DCI.

[0031] Preferably, the fourth power is greater than the first threshold, and the fifth operation includes:

[0032] Stop sending data in the tenth period.

[0033] detecting a fifth power in the channel in an eleventh time period that is after the tenth time period and within the first time period, and

[0034] The sixth operation is performed based on the fifth power in a twelfth period that is after the eleventh period and within the first period.

[0035] Preferably, the fourth power is not greater than the first threshold, and the fifth operation includes: sending data in a tenth time period.

[0036] Preferably, the first time period is a channel occupancy time within a fixed frame period.

[0037] Preferably, the first period precedes an idle period within the fixed frame period.

[0038] Preferably, the data is for low priority traffic.

[0039] Preferably, the time delay requirement of the low priority service is greater than the time delay requirement of the high priority service.

[0040] Preferably, the reliability requirement of the low priority service is lower than the reliability requirement of the high priority service.

[0041] Preferably, the priority level of the low priority service is lower than the priority level of the high priority service.

[0042] Preferably, high priority traffic is associated with ultra-reliable low latency communications.

[0043] Preferably, the low priority service is associated with enhanced mobile broadband.

[0044] Preferably, the second period overlaps with an idle period of a fixed frame period configured for another wireless device.

[0045] Preferably, the other wireless device is used for high priority traffic.

[0046] Preferably, the wireless device is a user equipment or a base station.

[0047] The present disclosure relates to a wireless communication method for use in a wireless device. The wireless communication method includes:

[0048] detecting the power in the channel during idle periods, and

[0049] An operation is performed based on a relationship between the detected power, the first threshold, and the second threshold.

[0050] Various embodiments may preferably implement the following features:

[0051] Preferably, the detected power is not greater than a first threshold, and the operation includes: transmitting data in an occupied period following the idle period.

[0052] Preferably, the detected power is greater than a first threshold and not greater than a second threshold, and the operation includes transmitting data at a normal transmission power or an increased transmission power higher than a normal transmission predefined power in an occupied period following the idle period.

[0053] Preferably, the second threshold is greater than the first threshold, the detected power is greater than the second threshold, and the operation includes: not transmitting data in an occupied period following the idle period.

[0054] Preferably, the second threshold is greater than the first threshold, the detected power is greater than the first threshold, and the operation includes: not transmitting data in an occupied period following the idle period.

[0055] Preferably, the occupied period is a channel occupied time in a fixed frame period following a fixed frame period of the idle period.

[0056] Preferably, the data is for high priority traffic.

[0057] Preferably, the time delay requirement of high priority services is smaller than the time delay requirement of low priority services.

[0058] Preferably, the reliability requirement of high-priority services is higher than the reliability requirement of low-priority services.

[0059] Preferably, the priority of a high priority service is higher than the priority of a low priority service.

[0060] Preferably, the low priority service is associated with enhanced mobile broadband.

[0061] Preferably, high priority traffic is associated with ultra-reliable low latency communications.

[0062] Preferably, the idle period overlaps with an occupied period of a fixed frame period configured for another wireless device.

[0063] Preferably, the other wireless device is used for low priority traffic.

[0064] Preferably, the wireless device is a user equipment or a base station.

[0065] The present disclosure relates to a wireless device, comprising:

[0066] a communication unit configured to transmit data in a first period, and

[0067] A processor is configured to perform a first operation in a second time period within the first time period.

[0068] Various embodiments may preferably implement the following features:

[0069] Preferably, the processor is further configured to execute a wireless communication method according to any one of the aforementioned methods.

[0070] The present disclosure relates to a wireless device, including a processor configured to detect power on a channel in an idle period and perform an operation based on a relationship between the detected power, a first threshold, and a second threshold.

[0071] Various embodiments may preferably implement the following features:

[0072] Preferably, the processor is further configured to execute the wireless communication method according to any one of the aforementioned methods.

[0073] The present disclosure relates to a computer program product, which includes a computer-readable program medium code stored thereon, and when the code is executed by a processor, causes the processor to implement a method according to any one of the aforementioned methods.

[0074] The exemplary embodiments disclosed herein are intended to provide features that will become apparent by reference to the following description when combined with the accompanying drawings. According to various embodiments, exemplary systems, methods, devices, and computer program products are disclosed herein. However, it should be understood that these embodiments are presented by way of example and not limitation, and it will be apparent to those of ordinary skill in the art who read this disclosure that various modifications may be made to the disclosed embodiments while remaining within the scope of this disclosure.

[0075] Therefore, the present disclosure is not limited to the exemplary embodiments and applications described and illustrated herein. In addition, the specific order and / or hierarchy of steps in the methods disclosed herein are merely exemplary implementations. Based on design preferences, while remaining within the scope of the present disclosure, the specific order or hierarchy of steps of the disclosed methods or processes can be rearranged. Therefore, it should be understood by those of ordinary skill in the art that the methods and techniques disclosed herein present various steps or actions in a sample order, and unless otherwise expressly stated, the present disclosure is not limited to the specific order or hierarchy presented.

[0076] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 An example of a schematic diagram of a wireless terminal according to an embodiment of the present disclosure is shown.

[0078] Figure 2 An example of a schematic diagram of a wireless network node according to an embodiment of the present disclosure is shown.

[0079] Figure 3 An example of multiplexing services with different priority levels according to an embodiment of the present disclosure is shown.

[0080] Figure 4 An example of multiplexing services with different priority levels according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0081] also, Figure 1 A schematic diagram of a wireless terminal 10 according to an embodiment of the present disclosure is provided. The wireless terminal 10 may be a user equipment (UE), a mobile phone, a laptop computer, a tablet computer, an e-book, or a portable computer system, and is not limited herein. The wireless terminal 10 may include a processor 100 such as a microprocessor or an application-specific integrated circuit (ASIC), a storage unit 110, and a communication unit 120. The storage unit 110 may be any data storage device that stores program code 112 accessed and executed by the processor 100. Embodiments of the storage unit 112 include, but are not limited to, a subscriber identity module (SIM), a read-only memory (ROM), a flash memory, a random access memory (RAM), a hard disk, and an optical data storage device. The communication unit 120 may be a transceiver, and is used to send and receive signals (e.g., messages or data packets) according to the processing results of the processor 100. In an embodiment, the communication unit 120 communicates with the communication unit 120 via Figure 1 At least one antenna 122 is shown for transmitting and receiving signals.

[0082] In an embodiment, the storage unit 110 and the program code 112 may be omitted, and the processor 100 may include the storage unit having the stored program code.

[0083] The processor 100 may implement any one of the steps of the exemplary embodiments on the wireless terminal 10 , for example, by executing the program code 112 .

[0084] The communication unit 120 may be a transceiver. Alternatively or additionally, the communication unit 120 may combine a transmitting unit with a receiving unit, which are respectively configured to transmit and receive signals to and from a wireless network node (eg, a base station).

[0085] Figure 2A schematic diagram of a radio network node 20 according to an embodiment of the present disclosure is provided. The radio network node 20 may be a satellite, a base station (BS), a network entity, a mobility management entity (MME), a service gateway (S-GW), a packet data network (PDN) gateway (P-GW), a radio access network (RAN), a next generation RAN (NG-RAN), a data network, a core network, or a radio network controller (RNC), and is not limited herein. The radio network node 20 may include a processor 200 such as a microprocessor or an ASIC, a storage unit 210, and a communication unit 220. The storage unit 210 may be any data storage device that stores program code 212 accessed and executed by the processor 200. Examples of the storage unit 212 include, but are not limited to, a SIM, a ROM, a flash memory, a RAM, a hard disk, and an optical data storage device. The communication unit 220 may be a transceiver, and is used to send and receive signals (e.g., messages or data packets) according to the processing results of the processor 200. In an example, the communication unit 220 communicates with the communication unit 220 via Figure 2 At least one antenna 222 is shown for transmitting and receiving signals.

[0086] In an embodiment, the storage unit 210 and the program code 212 may be omitted. The processor 200 may include a storage unit having stored program code.

[0087] The processor 200 may implement any of the steps described in the exemplary embodiments on the radio network node 20 , for example, by executing the program code 212 .

[0088] The communication unit 220 may be a transceiver. Alternatively or additionally, the communication unit 220 may combine a transmitting unit with a receiving unit, which are respectively configured to send and receive signals to and from a wireless terminal (eg, a user equipment).

[0089] In the present disclosure, a device may be equivalent to a wireless device, a wireless terminal, a UE, a radio network node, or a BS, and is not limited herein.

[0090] In the present disclosure, a high priority service device may be equivalent to a high priority service or a device that performs (eg, sends) a high priority service.

[0091] In the present disclosure, a low priority traffic device may be equivalent to a low priority traffic or a device that performs (eg, sends) a low priority traffic.

[0092] In the present disclosure, frequency may be equivalent to channel, carrier, carrier frequency or frequency band.

[0093] In the present disclosure, a time period may be equivalent to a time slot, at least one time slot, or a plurality of time slots.

[0094] In the present disclosure, priority may be equivalent to priority level.

[0095] There are certain rules that need to be followed regarding the use of NR-U technology. For example, before a device (e.g., a BS or UE) uses a channel in an unlicensed spectrum to send data, the device needs to perform a clear channel assessment (CCA), also known as listen before talk (LBT). In an embodiment, the device performs CCA on a channel (i.e., a frequency band) by detecting (e.g., determining, acquiring, obtaining, or detecting) the power in the channel. Only devices that successfully perform CCA (e.g., the detected power is less than a threshold) can occupy a channel in an unlicensed spectrum to send data. The frame-based device (FBE) mode includes a fixed frame period (FFP), which includes a channel occupancy time (COT) and an idle period. When a device successfully performs CCA in an idle period, the device is allowed to occupy the channel in the COT of the next FFP. Otherwise, the device needs to wait and perform CCA again in the idle period of the next FFP. The FBE mode may also be referred to as a semi-continuous channel access mode, wherein the channel access process period of the semi-continuous channel access mode is the same as that of the FFP. Therefore, in order to simplify the description, the present disclosure utilizes the FBE mode and parameters of the FBE mode hereinafter.

[0096] In an embodiment, services with different priority levels may have different requirements. For example, services may be classified as high priority services or low priority services, where the priority level of high priority services is higher than the priority level of low priority services. In an embodiment, high priority services may have higher latency requirements than low priority services (i.e., the latency required for high priority services is less than the latency required for low priority services). In an embodiment, high priority services may have higher reliability requirements than low priority services (i.e., the reliability required for high priority services is higher than the reliability required for low priority services). In an embodiment, high priority services are associated with ultra-reliable low latency communications (URLLC). In an embodiment, low priority services are associated with enhanced mobile broadband (eMBB).

[0097] In an embodiment, a high-priority service may need to occupy channel resources of a low-priority service to send data of the high-priority service to achieve its higher requirements (e.g., smaller latency and / or higher reliability). The present disclosure provides various suggestions on multiplexing high-priority services and low-priority services in unlicensed spectrum and related operations of corresponding CCA.

[0098] Embodiment 1:

[0099] In an embodiment, when the NR-U device (e.g., BS or UE) operates in FBE mode, data of high priority services (hereinafter referred to as high priority service data) and data of low priority services (hereinafter referred to as low priority service data) can be transmitted in the same frequency band (e.g., a frequency band in an unlicensed spectrum). In this case, multiplexing of high priority services and low priority services is required for data transmission on the frequency band. In an embodiment, the frequency band is the minimum unit of frequency domain bandwidth for performing CCA. In an embodiment, the higher priority service is different from the lower priority service in at least one of the following aspects:

[0100] The delay required by high-priority services is less than the delay required by low-priority services.

[0101] The reliability required by high-priority services is higher than that required by low-priority services, or

[0102] The priority level of a high priority service is higher than the priority level of a low priority service.

[0103] In an embodiment, high priority traffic is associated with URLLC.

[0104] In an embodiment, low priority traffic is associated with eMBB.

[0105] In FBE mode, a device is able (e.g., allowed) to send data using the COT of the current FFP only when the device successfully performs CCA in the idle period of the previous FFP. In an embodiment, the FFP of a high-priority service device (hereinafter referred to as HP-FFP) may be smaller than the FFP of a low-priority service device (LP-FFP). In this case, the COT of the LP-FFP may overlap with the idle period of the HP-FFP. When a low-priority service device sends low-priority service data in a period in which the COT of the LP-FFP overlaps with the idle period of the HP-FFP (hereinafter referred to as the overlapping period), the CCA performed by the high-priority service device may fail. That is, the high-priority service device detects (e.g., detects or determines) that the frequency band is occupied and cannot send data within the COT of the next HP-FFP. As a result, the requirements of the high-priority service may not be met.

[0106] In an embodiment, in order to meet the requirements of the high priority service, the low priority service device can reduce the power of sending the low priority service data in the overlapping period (for example, from the normal transmission power to the reduced transmission power). In this embodiment, the high priority service device and the low priority service device use the same frequency band (for example, the frequency band in the unlicensed spectrum) to send data. In an embodiment, the high priority service device performs CCA in the idle period and performs one of the following operations:

[0107] The CCA detection value (e.g., the detection power in the frequency band) is not greater than the threshold TH1, and the high priority service device sends the high priority service data at a normal transmission power in the COT of the next HP-FFP;

[0108] The CCA detection value is greater than the threshold TH1 and not greater than the threshold TH2, and the high priority service device transmits the high priority service data at a normal transmission power or an increased transmission power greater than the normal transmission power in the COT of the next HP-FFP; or

[0109] The CCA detection value is greater than the threshold TH2, and the high-priority service device does not send high-priority service data in the COT of the next HP-FFP.

[0110] In an embodiment, threshold TH1 is a threshold for CCA to determine whether a channel is idle (eg, a threshold for a device to consider (eg, determine) whether a channel is idle and whether the device can send data in the channel).

[0111] In an embodiment, threshold TH2 is a threshold for CCA to determine whether a channel is idle under a multiplexing condition. In an embodiment where a high-priority service device and a low-priority service device utilize the same channel to send data (i.e., a multiplexing condition), threshold TH2 may be a threshold at which a high-priority service device can send high-priority service data in a channel (at normal transmission power or increased power) when a low-priority service device sends low-priority service data in a channel at reduced power.

[0112] In an embodiment, when the CCA detection value is not greater than the threshold TH1, there may be no device transmitting data in the channel detected by the CCA.

[0113] In an embodiment, when the CCA detection value is greater than the threshold TH1 and not greater than the threshold TH2, there may be a device (e.g., a low priority service device) sending data in a channel with reduced transmission power, on which CCA is performed. In this embodiment, the channel on which the device sends data can be reused for sending data of another device.

[0114] In an embodiment, when the CCA detection value is greater than the threshold TH2, the channel on which the CCA is performed may not be used to transmit data of the attached device.

[0115] In an embodiment, the low-priority traffic device performs CCA in a period after (e.g., immediately after) the overlapping period, and performs at least one of the following operations 1.1 or 1.2 based on the CCA detection value:

[0116] 1.1: The CCA detection value is not greater than the threshold TH1 (i.e., the high-priority service device does not send high-priority service data in the channel), and the low-priority service device sends low-priority service data at normal transmission power in the remaining COT (i.e., the power for sending low-priority service data is increased from the reduced transmission power to the normal transmission power).

[0117] 1.2: The CCA detection value is greater than the threshold TH1 and not greater than the threshold TH2 (i.e., the high-priority service device sends high-priority service data in the detection channel), and the low-priority service device can perform one of the following operations 1.2.1, 1.2.2 or 1.2.3:

[0118] 1.2.1: In the channel, the low priority service device keeps sending low priority service data at a reduced transmission power, and performs CCA again after a time delay. In an embodiment, the time delay is designed so that the period for performing the later CCA is still within the COT of the current LP-FFP. When the CCA detection value of the CCA performed later is not greater than the threshold TH1 (for example, the high priority service device can complete sending the high priority service data), the low priority service device sends the low priority service data in the channel at normal transmission power (that is, the power for sending the low priority service data is restored from the reduced transmission power to the normal transmission power) in the remaining COT. When the CCA detection value of the CCA performed later is greater than the threshold TH1 and not greater than the threshold TH2, the low priority service device performs operation 1.2.1 again. In this embodiment, the time delay can be configured by radio resource control (RRC) signaling, indicated by downlink (DL) control information (DCI), or set to a default value.

[0119] 1.2.2: In the channel, the low priority service device stops sending low priority service data and performs CCA again after a period of delay. Note that the time period for performing the later CCA is still within the COT of the current LP-FFP. When the CCA detection value of the CCA performed later is not greater than the threshold TH1, the low priority service device sends the low priority service data in the channel at normal transmission power. When the CCA detection value of the CCA performed later is greater than the threshold TH1 and not greater than the threshold TH2, the low priority service device performs operation 1.2.2 again. In this embodiment, the time delay can be configured by RRC signaling, indicated by DCI, or set to a default value.

[0120] 1.2.3: The low-priority service device stops sending low-priority service data in the remaining COT of the current LP-FFP, and waits until the idle period of the next LP-FFP to perform CCA.

[0121] Figure 3 An example is shown in which a high-priority service device and a low-priority service device use the same channel to send data according to an embodiment of the present disclosure. Figure 3 In the example, LP-FFP is twice as long as HP-FFP (e.g., HP-FFP is 1 ms, while LP-FFP is 2 ms). In addition, the idle periods of LP-FFP and HP-FFP H1 and HP-FFP H2 are time slots with diagonal stripes. Figure 3 As shown, the COT of LP-FFP overlaps with the idle period of HP-FFP H1 at the time slot with horizontal stripes. In an embodiment, the low priority service device sends low priority service data in the COT of LP-FFP, and the low priority service device reduces the power of sending low priority service data in the overlapping period (i.e., the time slot with horizontal stripes). In this embodiment, the high priority service device wants to send high priority service data in the COT of HP-FFP H2, and performs CCA in the idle period of HP-FFP H1. When the CCA detection value is not greater than the threshold TH1, the high priority service device sends the high priority service data in the COT of HP-FFP H2. When the CCA detection value is greater than the threshold TH1 and not greater than the threshold TH2, the high priority service device sends the high priority service data at a normal transmission power or an increased transmission power greater than the normal transmission power. When the CCA detection value is greater than the threshold TH2, the high priority service device does not send the high priority service data in the COT of HP-FFP H2.

[0122] In addition, the low priority service device performs CCA at the time period immediately following the overlapping period (i.e., immediately after ...) (i.e., the time slot with vertical stripes immediately following the time slot with horizontal stripes). When the CCA detection value is not greater than the threshold TH1 (i.e., no high priority service device uses the channel), the low priority service device sends low priority service data at normal transmission power in the remaining COT of the LP-FFP. When the CCA detection value is greater than the threshold TH1 and not greater than the threshold TH2, the low priority service device can perform one of operations 1.2.1, 1.2.2 or 1.2.3.

[0123] For example, when the CCA detection value of the CCA performed in the time slot with vertical stripes is greater than the threshold TH1 and not greater than the threshold TH2, the low priority service device can perform operation 1.2.1. That is, the low priority service device keeps sending low priority service data in the channel at a reduced transmission power, and performs CCA again after a time delay. In this embodiment, the low priority service device can perform CCA again in the time slot with block check. That is, in this embodiment, the time delay is 3 time slots, and the low priority service device sends low priority service data at a reduced transmission power in the 3 time slots between the time slot with vertical stripes and the time slot with block check. In an embodiment, the CCA detection value of the CCA performed in the time slot with block check is not greater than the threshold TH1 (that is, the high priority service device completes sending the high priority service device data), and the low priority service device sends low priority service data at normal transmission power in the remaining COT. In an embodiment, the CCA detection value of the CCA performed in the time slot with block check is greater than the threshold TH1 and not greater than the threshold TH2, the low priority service device sends low priority service data in the next 3 time slots, and performs CCA again in the time slot with diamond check, and so on.

[0124] Note that the CCA performed after the overlap period is within the COT of the current LP-FFP. When the period for performing CCA is after (or overlaps with) the idle period of the current LP-FFP, the low-priority service device does not perform this CCA.

[0125] Embodiment 2:

[0126] When the NR-U device (e.g., BS or UE) operates in FBE mode, data of high priority services (hereinafter referred to as high priority service data) and data of low priority services (hereinafter referred to as low priority service data) can be sent in the same frequency band (e.g., a frequency band in an unlicensed spectrum). In this case, multiplexing of high priority services and low priority services is required for data transmission on the frequency band. In an embodiment, the frequency band is the minimum unit of frequency domain bandwidth for performing CCA. In an embodiment, the higher priority service is different from the lower priority service in at least one of the following aspects:

[0127] The delay required by high-priority services is less than the delay required by low-priority services.

[0128] The reliability required by high-priority services is higher than that required by low-priority services, or

[0129] The priority level of a high priority service is higher than the priority level of a low priority service.

[0130] In an embodiment, high priority traffic is associated with URLLC.

[0131] In an embodiment, low priority traffic is associated with eMBB.

[0132] In FBE mode, when a device successfully performs CCA in an idle period of a previous FFP, the device is able to use the COT of the current FFP to send data. In an embodiment, the FFP of a high-priority service device (hereinafter referred to as HP-FFP) may be smaller than the FFP of a low-priority service device (LP-FFP). In this case, the COT of the LP-FFP may overlap with the idle period of the HP-FFP. When a low-priority service device sends low-priority service data in a period in which the COT of the LP-FFP overlaps with the idle period of the HP-FFP (hereinafter referred to as the overlapping period), the CCA performed by the high-priority service device may fail. That is, the high-priority service device detects (e.g., detects or determines) that the frequency band is occupied and cannot send data within the COT of the next HP-FFP. As a result, the requirements of the high-priority service may not be met.

[0133] In an embodiment where a high-priority service device and a low-priority service device use the same frequency band (e.g., a frequency band in an unlicensed spectrum) to transmit data, the low-priority service device may delay the transmission of the low-priority service data in the overlapping period to achieve the requirements of the high-priority service. That is, the low-priority service device does not transmit the low-priority service data in the overlapping period. In this embodiment, the data in the overlapping period is delayed. In an embodiment, the high-priority service device performs CCA in the idle period and performs one of the following operations:

[0134] The CCA detection value (eg, the detection power in the frequency band) is not greater than the threshold TH1, and the high-priority service device occupies the COT of the next HP-FFP to send high-priority service data; or

[0135] The CCA detection value is greater than the threshold TH1, and the CCA performed by the high-priority service device fails. The high-priority service device does not send high-priority service data in the COT of the next HP-FFP.

[0136] In an embodiment, the low priority traffic device performs CCA in a period after (e.g., immediately after) the overlapping period, and performs one of the following operations 2.1 or 2.2 based on the CCA detection value:

[0137] 2.1: The CCA detection value is not greater than the threshold TH1 (ie, the high-priority service device does not send high-priority service data in the channel), while the low-priority service device sends low-priority service data in the remaining COT.

[0138] 2.2: The CCA detection value is greater than the threshold TH1 (i.e., the high-priority service device sends high-priority service data in the detection channel), and the low-priority service device can perform one of the following operations 2.2.1 or 2.2.2:

[0139] 2.2.1: In the channel, the low priority service device stops sending low priority service data and performs CCA after a time delay. In an embodiment, the time delay is designed so that the period for performing the later CCA is still within the COT of the current LP-FFP. When the CCA detection value of the CCA performed later is not greater than the threshold TH1, the low priority service device continues to send low priority service data in the channel within the remaining COT. When the CCA detection value of the CCA performed later is greater than the threshold TH1, the low priority service device performs operation 2.2.1 again. In this embodiment, the time delay can be configured by RRC signaling, indicated by DCI, or set to a default value.

[0140] 2.2.2: The low-priority service device stops sending low-priority service data in the remaining COT of the current LP-FFP, and waits until the idle period of the next LP-FFP to perform CCA.

[0141] Figure 4 An example is shown in which a high-priority service device and a low-priority service device use the same channel to send data according to an embodiment of the present disclosure. Figure 4 In the example, LP-FFP is twice as long as HP-FFP (e.g., HP-FFP is 1 ms, while LP-FFP is 2 ms). In addition, the idle periods of LP-FFP and HP-FFP H1 and HP-FFP H2 are time slots with diagonal stripes. Figure 4 As shown, the COT of LP-FFP overlaps with the idle period of HP-FFP H1 at the time slots with horizontal stripes.

[0142] exist Figure 4 In the embodiment of the present invention, the low priority service device sends the low priority service data in the COT of the LP-FFP, and the low priority service device delays the data transmission in the overlapping period (i.e., stops sending the low priority service data in the overlapping period). In this embodiment, the high priority service device wants to send the high priority service data in the COT of the HP-FFP H2, and performs CCA in the idle period of the HP-FFP H1. When the CCA detection value is not greater than the threshold value TH1, the high priority service device sends the high priority service data in the COT of the HP-FFP H2. When the CCA detection value is greater than the threshold value TH1, the high priority service device does not send the high priority service data in the COT of the HP-FFP H2.

[0143] In an embodiment, the low priority service device performs CCA at a time period immediately following the overlapping period (i.e., immediately after ...) (i.e., a time slot with vertical stripes immediately following a time slot with horizontal stripes). When the CCA detection value is not greater than the threshold TH1 (i.e., no high priority service device uses the channel), the low priority service device continues to send low priority service data after the CCA. In an embodiment, when the CCA detection value is greater than the threshold TH1, the low priority service device may perform operation 2.2.2. That is, the low priority service device stops sending low priority service data in the remaining COT of the LP-FFP (i.e., a time slot between a time slot with vertical stripes and an idle period of the LP-FFP), and waits until the idle period of the LP-FFP to perform the CCA.

[0144] Embodiment 3:

[0145] When the NR-U device (e.g., BS or UE) operates in FBE mode, data of high priority services (hereinafter referred to as high priority service data) and data of low priority services (hereinafter referred to as low priority service data) can be sent in the same frequency band (e.g., a frequency band in an unlicensed spectrum). In this case, multiplexing of high priority services and low priority services is required for data transmission on the frequency band. In an embodiment, the frequency band is the minimum unit of frequency domain bandwidth for performing CCA. In an embodiment, the higher priority service is different from the lower priority service in at least one of the following aspects:

[0146] The delay required by high-priority services is less than the delay required by low-priority services.

[0147] The reliability required by high-priority services is higher than that required by low-priority services, or

[0148] The priority level of a high priority service is higher than the priority level of a low priority service.

[0149] In an embodiment, high priority traffic is associated with URLLC.

[0150] In an embodiment, low priority traffic is associated with eMBB.

[0151] In FBE mode, when a device successfully performs CCA in an idle period of a previous FFP, the device is able to use the COT of the current FFP to send data. In an embodiment, the FFP of a high-priority service device (hereinafter referred to as HP-FFP) may be smaller than the FFP of a low-priority service device (LP-FFP). In this case, the COT of the LP-FFP may overlap with the idle period of the HP-FFP. When a low-priority service device sends low-priority service data in a period in which the COT of the LP-FFP overlaps with the idle period of the HP-FFP (hereinafter referred to as the overlapping period), the CCA performed by the high-priority service device may fail. That is, the high-priority service device detects (e.g., detects or determines) that the target frequency band is occupied and cannot send data in the COT of the next HP-FFP. As a result, the requirements of the high-priority service may not be met.

[0152] In an embodiment where a high-priority service device and a low-priority service device utilize the same frequency band (e.g., a frequency band in an unlicensed spectrum) to transmit data, the low-priority service device may puncture the transmission of the low-priority service data in the overlapping period to achieve the requirements of the high-priority service. In other words, the low-priority service device deletes (e.g., punctures or discards) the data initially configured in the overlapping period.

[0153] In an embodiment, the high priority service device performs CCA in an idle period and performs one of the following operations:

[0154] The CCA detection value (eg, the detection power in the frequency band) is not greater than the threshold TH1, and the high priority service device sends high priority service data at normal transmission power in the COT of the next HP-FFP; or

[0155] The CCA detection value is greater than the threshold TH1, and the CCA performed by the high-priority service device fails. The high-priority service device does not send high-priority service data in the COT of the next HP-FFP.

[0156] In an embodiment, the low priority traffic device performs CCA in a period after (e.g., immediately after) the overlapping period, and performs one of the following operations 3.1 or 3.2 based on the CCA detection value:

[0157] 3.1: The CCA detection value is not greater than the threshold TH1 (ie, there is no high-priority service device sending high-priority service data in the channel), the CCA performed by the low-priority service device is successful, and the low-priority service device sends low-priority service data in the remaining COT.

[0158] 3.2: The CCA detection value is greater than the threshold TH1 (ie, the high-priority service device sends high-priority service data in the channel), the low-priority service device stops sending low-priority service data in the remaining COT, and performs CCA in the next idle period.

[0159] In an embodiment of the FEB mode, a high-priority service device and a low-priority service device use the same frequency band to send data. In this embodiment, the COT of the low-priority service device overlaps with the idle period of the high-priority service, and one of the following events S1, S2 or S3 may occur during the overlapping period:

[0160] S1: Low-priority service devices reduce their transmission power during the overlapping period.

[0161] S2: The low-priority service device delays the transmission of low-priority service data during the overlapping period.

[0162] S3: The low priority service device punctures the low priority service data in the overlapping period.

[0163] When the low-priority service device performs operation S1, the following event S1.1 may occur:

[0164] S1.1: When the low-priority service device performs S1 operation, the high-priority service device performs CCA in the overlapping period. When the CCA detection value is not greater than the threshold TH1, the high-priority service device uses normal transmission power to send high-priority service data. When the CCA detection value is greater than the threshold TH1 and not greater than the threshold TH2, the high-priority service device can use normal transmission power or increased transmission power to send high-priority service data. When the CCA detection value is greater than the threshold TH2, the high-priority service device does not send high-priority service data in the COT of the next HP-FFP. In addition, one of the following events S1.1.1, S1.1.2, or S1.1.3 may occur:

[0165] S1.1.1: The low priority service device performs CCA after (eg, immediately after) the overlapping period, the CCA detection value is not greater than the threshold TH1, and the low priority service device sends low priority service data at normal transmission power.

[0166] S1.1.2: The low priority service device performs CCA after (e.g., immediately after) the overlap period, the CCA detection value is greater than the threshold TH1 and not greater than the threshold TH2, and the following event S1.1.2.1 may occur:

[0167] S1.1.2.1: The low priority service device continues to send low priority service data at a reduced transmit power and performs CCA after a time delay. Note that the time period for performing CCA in operation S1.1.2.1 is within the COT of the current LP-FFP. In addition, the time delay may be configured through RRC signaling, indicated through DCI, or set to a default value. Based on the CCA performed after the time delay, the following events S1.1.2.2 or S1.1.2.3 may occur.

[0168] S1.1.2.2: The CCA detection value of the CCA performed after the time delay (eg, immediately thereafter) is greater than threshold TH1 and not greater than threshold TH2, and event S1.1.2.1 may occur again.

[0169] S1.1.2.3: The CCA detection value of the CCA performed after the time delay (eg, immediately thereafter) is not greater than the threshold TH1, and the low priority service device sends the low priority service data at a normal transmission power.

[0170] S1.1.3: The low priority service device performs CCA after (eg, immediately after) the overlapping period, the CCA detection value is greater than the threshold TH1, the low priority service device stops sending low priority service data, and performs CCA in the next idle period.

[0171] When the low-priority service device performs operation S2, the following event S1.2 may occur:

[0172] S1.2: When the low-priority service device performs S2 operation, the high-priority service device performs CCA in the overlapping period. When the CCA detection value is not greater than the threshold TH1, the high-priority service device occupies the COT of the next HP-FFP to send the high-priority service data. When the CCA detection value is greater than the threshold TH1, the CCA performed by the high-priority service device fails, and the high-priority service device cannot use the COT of the next HP-FFP to send the high-priority service data. In addition, one of the following events S1.2.1, S1.2.2, or S1.2.3 may occur:

[0173] S1.2.1: The low-priority service device performs CCA after (eg, immediately after) the overlapping period, the CCA detection value is not greater than the threshold TH1, and the low-priority service device continues to send low-priority service data.

[0174] S1.2.2: The low priority service device performs CCA after (e.g., immediately after) the overlap period, the CCA detection value is greater than the threshold TH1, and the following event S1.1.2.1 may occur:

[0175] S1.2.2.1: The low priority service device stops sending low priority service data and performs CCA after a time delay (e.g., immediately thereafter). Note that the period of time in which CCA is performed in operation S1.2.2.1 is within the COT of the current LP-FFP. In addition, the time delay can be configured through RRC signaling, indicated through DCI, or set to a default value. Based on the CCA performed after the time delay, the following events S1.2.2.2 or S1.2.2.3 may occur.

[0176] S1.2.2.2: The CCA detection value of the CCA performed after the time delay (e.g., immediately thereafter) is greater than the threshold TH1, and event S1.1.2.1 may occur.

[0177] S1.2.2.3: The CCA detection value of the CCA performed after the time delay (eg, immediately thereafter) is not greater than the threshold TH1, and the low priority service device continues to send low priority service data.

[0178] S1.2.3: The low priority service device performs CCA after (eg, immediately after) the overlapping period, the CCA detection value is greater than the threshold TH1, and the low priority service device stops sending low priority service data in the remaining COT, and performs CCA in the next idle period.

[0179] When the low priority service device performs operation S3, the following event S1.3 may occur:

[0180] S1.3: When the low-priority service device performs S3 operation, the high-priority service device performs CCA in the overlapping period. When the CCA detection value is not greater than the threshold TH1, the high-priority service device occupies the COT of the next HP-FFP to send the high-priority service data. When the CCA detection value is greater than the threshold TH1, the CCA performed by the high-priority service device fails, and the high-priority service device cannot use the COT of the next HP-FFP to send the high-priority service data. In addition, the following events S1.3.1 or S1.3.2 may occur:

[0181] S1.3.1: The low priority service device performs CCA after (eg, immediately after) the overlapping period, the CCA detection value is not greater than the threshold TH1 (ie, CCA is successful), and the low priority service device continues to send low priority service data after the CCA is successful.

[0182] S1.3.2: The low priority service device performs CCA after (eg, immediately after) the overlapping period, the CCA detection value is greater than the threshold TH1, and the low priority service device stops sending low priority service data in the remaining COT and waits for the next idle period to perform CCA.

[0183] In the present disclosure, exemplary references to the fifth generation mobile communication system (5G) are provided. However, it should be understood by those skilled in the art that the present disclosure is not limited to 5G, but covers other standards without departing from the present disclosure.

[0184] In the present disclosure, unlicensed spectrum is exemplarily referenced. However, those skilled in the art will appreciate that the present disclosure is not limited to unlicensed spectrum, but covers other spectrum (eg, licensed spectrum) without departing from the present disclosure.

[0185] Although various embodiments of the present disclosure have been described above, it should be understood that they are presented only by way of example rather than by way of limitation. Similarly, various figures may depict example architectures or configurations, which are provided to enable those of ordinary skill in the art to understand the exemplary features and functions of the present disclosure. However, these personnel should understand that the present disclosure is not limited to the illustrated example architectures or configurations, but may be implemented using a variety of alternative architectures and configurations. In addition, as those of ordinary skill in the art should understand, one or more features of an embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of the present disclosure should not be limited by any of the above-described exemplary embodiments.

[0186] It should also be understood that any reference to an element herein using names such as "first," "second," etc. does not generally limit the number or order of those elements. Rather, these names may be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to a first and a second element does not mean that only two elements are employed, or that the first element must precede the second element in some manner.

[0187] In addition, it should be understood by those skilled in the art that any of a variety of different technologies and techniques may be used to represent information and signals. For example, data, instructions, commands, information, signals, bits, and symbols that may be referenced in the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0188] The skilled person should also understand that any of the various illustrative logical blocks, units, processors, devices, circuits, methods, and functions described in conjunction with the aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementations, analog implementations, or a combination of the two), firmware, various forms of programs or design codes combined with instructions (for convenience, may be referred to herein as "software" or "software modules"), or any combination of these technologies.

[0189] In order to clearly illustrate the interchangeability of this hardware, firmware and software, various illustrative components, blocks, units, circuits and steps have been generally described above according to their functionality. Whether this functionality is implemented as hardware, firmware or software or a combination of these technologies depends on the specific application and the design constraints imposed on the entire system. Skilled technicians can implement the described functionality in various ways for each specific application, but the decision of this implementation will not lead to deviation from the scope of this disclosure. According to various embodiments, processors, devices, components, circuits, structures, machines, units, etc. can be configured to perform one or more of the functions described herein. As used herein with respect to specific operations or functions, the term "configured to ..." or "configured for ..." refers to processors, devices, components, circuits, structures, machines, units, etc., which are physically constructed, programmed and / or arranged to perform specific operations or functions.

[0190] In addition, the technician should understand that the various illustrative logic blocks, units, devices, components and circuits described herein can be implemented in or performed by an integrated circuit (IC), which includes a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, or any combination thereof. The logic blocks, units and circuits may also include antennas and / or transceivers for communicating with various components within a network or within a device. The general-purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a combination of multiple microprocessors, a combination of one or more microprocessors combined with a DSP core, or any other suitable configuration for performing the functions described herein. If implemented in software, the function may be stored as one or more instructions or codes on a computer-readable medium. Therefore, the steps of the method or algorithm disclosed herein may be implemented as software stored on a computer-readable medium.

[0191] Computer-readable media include both computer storage media and communication media, including any medium that enables the transfer of a computer program or code from one place to another. Storage media can be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media can include: RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage device, or any other medium that can be used to store desired program code in the form of instructions or data structures and can be accessed by a computer.

[0192] In this application, the term "unit" as used herein refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. In addition, for the purpose of discussion, various units are described as discrete units; however, it is obvious to a person skilled in the art that two or more units can be combined to form a single unit that performs the associated functions according to the embodiments of the present disclosure.

[0193] In addition, in the embodiments of the present disclosure, memory or other storage devices and communication components can be adopted.It should be understood that, for the sake of clarity, the above description has described the embodiments of the present disclosure by citing different functional units and processors.However, it is obvious that, without departing from the present disclosure, any suitable functional distribution between different functional units, processing logic elements or domains can be used.For example, the functionality to be performed by a separate processing logic element or controller can be performed by the same processing logic element or controller.Therefore, the reference to a specific functional unit is only a reference to a convenient means for providing the functionality, rather than an indication of a strict logical or physical structure or organization.

[0194] Various modifications to the embodiments described in the present disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments shown herein, but should be given the broadest scope consistent with the novel features and principles disclosed herein, as described in the claims below.

Claims

1. A wireless communication method for use in a wireless device, the wireless communication method comprising: Send data in the first period, performing a first operation in a second time period, the second time period being within the first time period, detecting a first power in a channel in which data is transmitted in a third time period, the third time period being after the second time period and within the first time period, performing a second operation based on the first power in a fourth time period, the fourth time period being after the third time period and within the first time period, wherein the first power is greater than a first threshold value and not greater than a second threshold value, and the second operation includes: sending data at a reduced transmit power in the fourth time period; detecting a second power in the channel in a fifth time period, the fifth time period being after the fourth time period and within the first time period, performing a third operation based on the second power in a sixth time period, the sixth time period being after the fifth time period and within the first time period, Wherein, the first time period is the channel occupation time COT within the fixed frame period FFP, and / or The first period is before the idle period in the fixed frame period. The FFP includes a channel occupation time and an idle period, and when the device successfully performs an idle channel assessment in the idle period, the device is allowed to occupy the channel in the COT of the next FFP.

2. The wireless communication method according to claim 1, wherein: The first operation includes reducing power for transmitting data in the second time period.

3. The wireless communication method according to claim 1, wherein: The first operation includes: stopping sending data in the second time period.

4. The wireless communication method according to claim 3, wherein: The data in the second time period is delayed.

5. The wireless communication method according to claim 3, wherein: The data in the second period is punctured.

6. The wireless communication method according to claim 1, wherein: The time delay between the third period and the fifth period is configured through radio resource control RRC signaling, indicated through downlink control information DCI, or set to a default value.

7. The wireless communication method according to claim 1, wherein: The second power is greater than the first threshold and not greater than the second threshold, and the third operation includes: sending data at a reduced power during the sixth time period, detecting a third power in the channel in a seventh time period, the seventh time period being after the sixth time period and within the first time period, and A fourth operation is performed based on the third power in an eighth time period that is after the seventh time period and within the first time period.

8. The wireless communication method according to claim 1, wherein: The second power is not greater than the first threshold, and the third operation includes: transmitting data in the sixth time period at a power at which data was transmitted before the second time period.

9. The wireless communication method according to any one of claims 1 to 8, wherein: The data is for low priority traffic.

10. The wireless communication method according to claim 9, wherein: The time delay requirement of the low priority service is greater than the time delay requirement of the high priority service.

11. The wireless communication method according to claim 9, wherein: The reliability requirement of the low-priority service is lower than the reliability requirement of the high-priority service.

12. The wireless communication method according to claim 9, wherein: The priority level of the low priority service is lower than the priority level of the high priority service.

13. The wireless communication method according to any one of claims 10 to 12, wherein: The high priority service is associated with ultra-reliable low-latency communication.

14. The wireless communication method according to claim 9, wherein: The low priority service is associated with enhanced mobile broadband.

15. The wireless communication method according to claim 9, wherein: The second time period overlaps with an idle time period of a fixed frame period FFP configured for another wireless device, wherein the other wireless device is used for high priority services, The FFP includes a channel occupation time COT and an idle period, and when the other wireless device successfully performs idle channel assessment in the idle period, the other wireless device is allowed to occupy the channel in the COT of the next FFP.

16. A wireless device comprising: a communication unit configured to transmit data in a first period, and a processor configured to perform a first operation in a second time period within the first time period, detecting a first power in a channel in which data is transmitted in a third time period, the third time period being after the second time period and within the first time period, performing a second operation based on the first power in a fourth time period, the fourth time period being after the third time period and within the first time period, wherein the first power is greater than a first threshold value and not greater than a second threshold value, and the second operation includes: sending data at a reduced transmit power in the fourth time period; detecting a second power in the channel in a fifth time period, the fifth time period being after the fourth time period and within the first time period, performing a third operation based on the second power in a sixth time period, the sixth time period being after the fifth time period and within the first time period, Wherein, the first time period is the channel occupation time COT within the fixed frame period FFP, and / or The first period is before the idle period in the fixed frame period. The FFP includes a channel occupation time and an idle period, and when the device successfully performs an idle channel assessment in the idle period, the device is allowed to occupy the channel in the COT of the next FFP.

17. The wireless device of claim 16, wherein: The processor is further configured to execute the wireless communication method according to any one of claims 2 to 15.

18. A computer program product comprising computer readable program medium code stored thereon, which, when executed by a processor, causes the processor to implement the method according to any one of claims 1 to 15.

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