Channel access mechanism indication method and communication device

Abstract

The present application discloses a channel access mechanism indication method and a communication device, belonging to the field of communication technology. The channel access mechanism indication method of an embodiment of the present application includes: a first communication device sends a physical layer signaling to a second communication device; if the physical layer signaling indicates a first channel access mechanism to be adopted by the first communication device when accessing a channel, then after the first communication device sends the physical layer signaling, the first communication device adopts the first channel access mechanism to access the channel.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a channel access mechanism indication method and communication equipment. Background Art

[0002] In future communication systems, shared spectrum (such as unlicensed bands) can be used as a supplement to licensed bands to expand the services of operators. Generally, communication devices can use unlicensed bands fairly, and communication devices using unlicensed bands need to comply with the use rules of unlicensed bands, such as listen before talk (LBT), maximum channel occupancy time (MCOT) and other rules.

[0003] In high frequency bands (e.g., unlicensed bands greater than 52.6 GHz), some countries or regions do not require communication devices to enforce LBT in unlicensed bands. Therefore, communication devices operating in this band can access the channel using a channel access mechanism in a non-LBT mode. Then, in situations where the interference level is high or the channel occupancy time is long, the communication device can be instructed through system information or radio resource control (RRC) signaling to switch to a channel access mechanism in LBT mode to access the channel.

[0004] However, since system information and RRC signaling are high-level signaling, the delay in the process of switching the channel access mechanism of the communication device is relatively long. Therefore, when the environment of the communication device changes (for example, the interference situation of the communication device changes), the communication device may not be able to quickly switch the channel access mechanism to adapt to the new environment. Summary of the invention

[0005] The embodiments of the present application provide a channel access mechanism indication method and a communication device, which can solve the problem that the existing communication device cannot quickly switch the channel access mechanism.

[0006] In a first aspect, a channel access mechanism indication method is provided, the method comprising: a first communication device sends a physical layer signaling to a second communication device; wherein, if the physical layer signaling indicates a first channel access mechanism to be adopted by the first communication device when accessing a channel, then after the first communication device sends the physical layer signaling, the first communication device adopts the first channel access mechanism to access the channel.

[0007] In a second aspect, a channel access mechanism indication method is provided, the method comprising: a second communication device receives physical layer signaling sent by a first communication device; wherein, if the physical layer signaling indicates that the second communication device uses a fourth channel access mechanism when accessing the channel, then after the second communication device receives the physical layer signaling, the second communication device uses the fourth channel access mechanism to access the channel.

[0008] According to a third aspect, a channel access mechanism indication device is provided, which includes a sending module and an access module; the sending module is used to send physical layer signaling to a second communication device; if the physical layer signaling indicates a first channel access mechanism to be adopted by the first communication device when accessing the channel, the receiving module is used to adopt the first channel access mechanism to access the channel after sending the physical layer signaling.

[0009] In a fourth aspect, a channel access mechanism indication device is provided, which includes a receiving module and an access module; the receiving module is used to receive physical layer signaling sent by a first communication device; wherein, if the physical layer signaling indicates that the second communication device uses a fourth channel access mechanism when accessing the channel, the access module is used to use the fourth channel access mechanism to access the channel after receiving the physical layer signaling.

[0010] In a fifth aspect, a communication device is provided, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, and when the program or instruction is executed by the processor, the steps of the method of the first aspect or the second aspect are implemented.

[0011] In the sixth aspect, a first communication device is provided, comprising a processor and a communication interface, wherein the communication interface is used to send physical layer signaling to a second communication device; if the physical layer signaling indicates a first channel access mechanism to be adopted by the first communication device when accessing a channel, then after sending the physical layer signaling, the first channel access mechanism is adopted to access the channel.

[0012] In the seventh aspect, a second communication device is provided, including a processor and a communication interface, wherein the communication interface is used to receive physical layer signaling sent by the first communication device; if the physical layer signaling indicates that the second communication device uses a fourth channel access mechanism when accessing the channel, then after receiving the physical layer signaling, the fourth channel access mechanism is used to access the channel.

[0013] In an eighth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method of the first aspect are implemented, or the steps of the method of the second aspect are implemented.

[0014] In the ninth aspect, a chip is provided, the chip including a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the steps of the method of the first aspect, or to implement the steps of the method of the second aspect.

[0015] In a tenth aspect, a computer program / program product is provided. The computer program / program product is stored in a non-volatile storage medium, and the program / program product is executed by at least one processor to implement the steps of the method of the first aspect or the second aspect.

[0016] In an embodiment of the present application, a first communication device may send a physical layer signaling to a second communication device. If the physical layer signaling indicates a first channel access mechanism to be adopted by the first communication device when accessing a channel, then after the first communication device sends the physical layer signaling, the first communication device adopts the first channel access mechanism to access the channel. Through this scheme, since the physical layer signaling indicates the first channel access mechanism to be adopted by the first communication device when accessing a channel, after the first communication device sends the physical layer signaling, the first communication device can adopt the first channel access mechanism to access the channel, that is, the first communication device can switch the channel access mechanism, so the channel access mechanism adopted by the first communication device when accessing the channel can be switched without the transmission of high-level signaling, so that the delay of the first communication device switching the channel access mechanism can be reduced through the transmission of physical layer signaling, thereby enabling the first communication device to quickly switch the channel access mechanism.

[0017] In addition, the second communication device can receive the physical layer signaling sent by the first communication device; if the physical layer signaling indicates the fourth channel access mechanism adopted by the second communication device when accessing the channel, then after the second communication device receives the physical layer signaling, the second communication device uses the fourth channel access mechanism to access the channel. Through this solution, since the second communication device can use the fourth channel access mechanism to access the channel when the physical layer signaling indicates the fourth channel access mechanism adopted by the second communication device when accessing the channel, after the second communication device receives the physical layer signaling, that is, the second communication device can switch the channel access mechanism, so the channel access mechanism adopted by the second communication device when accessing the channel can be switched without the need to transmit high-level signaling, so that the delay of the second communication device switching the channel access mechanism can be reduced through the transmission of physical layer signaling, thereby enabling the second communication device to quickly switch the channel access mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the structure of a wireless communication system provided in an embodiment of the present application;

[0019] Figure 2 It is a flow chart of a channel access mechanism indication method provided in an embodiment of the present application;

[0020] Figure 3 It is one of the structural schematic diagrams of the channel access mechanism indication device provided in the embodiment of the present application;

[0021] Figure 4 This is the second structural diagram of the channel access mechanism indication device provided in the embodiment of the present application;

[0022] Figure 5 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0023] Figure 6 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0024] Figure 7 It is a structural diagram of the network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0026] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.

[0027] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as the 6th generation (6 th Generation, 6G) communication system.

[0028] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE) and other terminal side devices, and the wearable device includes: a smart watch, a bracelet, a headset, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 can be a base station or a core network, wherein the base station can be referred to as a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting and receiving point (Transmitting Receiving Point, TRP) or some other appropriate term in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

[0029] It should be noted that the communication device involved in the embodiments of the present application may be a terminal or a network side device. For example, the first communication device may be a network side device and the second communication device may be a terminal; or the first communication device may be a terminal and the second communication device may be a network side device.

[0030] The channel access mechanism indication method provided in the embodiment of the present application is described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

[0031] like Figure 2 As shown, an embodiment of the present application provides a channel access mechanism indication method, which includes the following steps 201 to 203, or steps 201-202 and step 204.

[0032] Step 201: A first communication device sends physical layer signaling to a second communication device.

[0033] Step 202: The second communication device receives physical layer signaling sent by the first communication device.

[0034] Step 203: If the physical layer signaling indicates a first channel access mechanism to be adopted by the first communication device when accessing the channel, after the first communication device sends the physical layer signaling, the first communication device adopts the first channel access mechanism to access the channel.

[0035] Step 204: If the physical layer signaling indicates that the second communication device uses the fourth channel access mechanism when accessing the channel, after the second communication device receives the physical layer signaling, the second communication device uses the fourth channel access mechanism to access the channel.

[0036] It can be understood that the above-mentioned physical layer signaling can indicate at least one of the first channel access mechanism adopted when the first communication device accesses the channel and the fourth channel access mechanism adopted when the second communication device accesses the channel.

[0037] In an embodiment of the present application, the above-mentioned physical layer signaling may indicate a channel access mechanism commonly used by a first communication device (e.g., a network side device) and a second communication device (e.g., a terminal) when accessing a channel, or the physical layer signaling may indicate a channel access mechanism used by the first communication device when accessing a channel, or the physical layer signaling may indicate a channel access mechanism used by the second communication device when accessing a channel. Wherein, when the above-mentioned physical layer signaling may indicate a channel access mechanism commonly used by a first communication device (e.g., a network side device) and a second communication device (e.g., a terminal) when accessing a channel, the first channel access mechanism used by the first communication device when accessing the channel and the fourth channel access mechanism used by the second communication device when accessing the channel may be indicated by the same domain, that is, the channel access mechanism indicated by the domain may be applied to both the first communication device and the second communication device.

[0038] Optionally, in the embodiment of the present application, the first channel access mechanism may include any one of the following channel access mechanisms:

[0039] Listen before talking (LBT) mode;

[0040] No-listen before talking (no-LBT) mode;

[0041] Rx-assisted LBT mode;

[0042] Receiver-only LBT mode;

[0043] Directional LBT mode;

[0044] Omni-directional LBT mode;

[0045] Quasi-omni-directional LBT mode;

[0046] Long-term sensing.

[0047] Accordingly, the fourth channel access mechanism may include any one of the following channel access mechanisms:

[0048] LBT mode;

[0049] no-LBT mode;

[0050] Rx-assisted LBT mode;

[0051] receiver-only LBT mode;

[0052] directional LBT mode;

[0053] omni-directional LBT mode;

[0054] quasi-omni-directional LBT mode;

[0055] long-term sensing.

[0056] Optionally, in the embodiment of the present application, the first channel access mechanism and the fourth channel access mechanism may be the same channel access mechanism or different channel access mechanisms, which may be determined according to actual use requirements and are not limited in the embodiment of the present application.

[0057] It should be noted that, in the case where the above-mentioned physical layer signaling indicates the above-mentioned first channel access mechanism, the first communication device can send the physical layer signaling to the second communication device to inform the second communication device that the first communication device will use the first channel access mechanism to access the channel. In the case where the physical layer signaling indicates the above-mentioned fourth channel access mechanism, the first communication device can send the physical layer signaling to the second communication device to instruct the second communication device to use the fourth channel access mechanism to access the channel.

[0058] Optionally, in an embodiment of the present application, the first communication device may be a network side device, and the second communication device may be a terminal; or, the first communication device may be a terminal, and the second communication device may be a network side device.

[0059] It should be noted that, for the channel access mechanism indication method provided in the embodiment of the present application, when the first communication device is a terminal, the terminal can not only switch the channel access mechanism autonomously, but also instruct the network side device to switch the channel access mechanism.

[0060] In the embodiment of the present application, before the second communication device receives the above physical layer signaling, the second communication device accesses the channel according to the channel access mechanism used last time. Correspondingly, before the first communication device sends the above physical layer signaling, the first communication device accesses the channel according to the channel access mechanism used last time.

[0061] It can be understood that the channel access mechanism indicated by the above physical layer signaling when the first communication device and / or the second communication device accesses the channel can override / overwrite the old channel access mechanism adopted by the first communication device and / or the second communication device.

[0062] Optionally, in an embodiment of the present application, when the first communication device is a network side device, the above-mentioned physical layer signaling can be a group common physical downlink control channel (GC PDCCH) or scheduling downlink control information (DCI).

[0063] Optionally, in an embodiment of the present application, the above-mentioned physical layer signaling includes an index corresponding to a channel access mechanism adopted by the first communication device and / or the second communication device when accessing a channel; or,

[0064] The above-mentioned physical layer signaling includes a bitmap, and the value of the bit of the bitmap indicates whether the first communication device and / or the second communication device adopts the channel access mechanism corresponding to the bit to access the channel.

[0065] It should be noted that in the embodiment of the present application, each channel access mechanism can correspond to an index or a bit.

[0066] Exemplarily, assuming that the index of the listen before talking (LBT) mode is 000, and the index of the no listen before talking (no-LBT) mode is 001; then when the physical layer signaling indicates that the first communication device and / or the second communication device access the channel and the index corresponding to the channel access mechanism adopted is 001, the first communication device and / or the second communication device can use the no-LBT mode to access the channel.

[0067] In an embodiment of the present application, assuming that there are 7 channel access mechanisms, the physical layer signaling can indicate the channel access mechanism adopted by the first communication device and / or the second communication device when accessing the channel through a 7-bit bitmap. Wherein, each bit corresponds to a channel access mechanism. If the value of a certain bit is 1, it indicates that the first communication device and / or the second communication device adopts the channel access mechanism to access the channel; if the value of a certain bit is 0, it indicates that the first communication device and / or the second communication device do not adopt the channel access mechanism to access the channel. If there are only two channel access mechanisms, such as LBT mode and no-LBT mode, the channel access mechanism adopted by the first communication device and / or the second communication device can be indicated by 1 bit. Wherein, when the value of the bit is 1, it indicates that the first communication device and / or the second communication device adopts LBT mode to access the channel; when the value of the bit is 0, it indicates that the first communication device and / or the second communication device adopts no-LBT mode to access the channel.

[0068] Optionally, in an embodiment of the present application, when the first communication device is a terminal, the above-mentioned physical layer signaling may be an uplink signal or uplink signaling.

[0069] Optionally, the uplink signal may include any one of the following:

[0070] Reference signal (RS) sequence;

[0071] Preamble;

[0072] Among them, different RS sequences or groups of RS sequences indicate different channel access mechanisms, and different preamble codes or groups of preamble codes indicate different channel access mechanisms.

[0073] Optionally, in the embodiment of the present application, the RS may be a demodulation reference signal (DMRS) or a sounding reference signal (SRS). Of course, in actual implementation, the RS may also be any other possible RS, which may be determined according to actual use requirements and is not limited in the embodiment of the present application.

[0074] Exemplarily, assuming that RS sequence 1 indicates channel access mechanism 1 and RS sequence 2 indicates channel access mechanism 2, then when the uplink signal includes RS sequence 1, the uplink signal instructs the first communication device and / or the second communication device to access the channel using channel access mechanism 1. Assuming that any sequence in group 1 of the RS sequence indicates channel access mechanism 1 and any sequence in group 2 of the RS sequence indicates channel access mechanism 2, then when the uplink signal belongs to group 2 of the RS sequence, the uplink signal instructs the first communication device and / or the second communication device to access the channel using channel access mechanism 2.

[0075] It should be noted that the above-mentioned channel access mechanism 1 and channel access mechanism 2 may be the channel access mechanism in the candidate channel access mechanism described below. In order to ensure the readability of the embodiment of the present application, the candidate channel access mechanism will be described in detail in the following embodiment, which will not be repeated here.

[0076] Optionally, in the embodiment of the present application, the preamble may be a physical random access channel (PRACH). Of course, in actual implementation, the preamble may also be any other possible preamble, which may be determined according to actual use requirements and is not limited in the embodiment of the present application.

[0077] As another example, assuming that preamble 1 indicates channel access mechanism 1 and preamble 2 indicates channel access mechanism 2, then when the uplink signal includes preamble 1, the uplink signal instructs the first communication device and / or the second communication device to access the channel using channel access mechanism 1. Assuming that any sequence in group 1 of the preamble indicates channel access mechanism 1 and any sequence in group 2 of the preamble indicates channel access mechanism 2, then when the uplink signal belongs to group 2 of the preamble, the uplink signal instructs the first communication device and / or the second communication device to access the channel using channel access mechanism 2.

[0078] Optionally, in an embodiment of the present application, the above-mentioned uplink signaling may be new uplink signaling or special uplink signaling.

[0079] Optionally, in an embodiment of the present application, the above-mentioned uplink signaling can be carried in a physical uplink control channel (physical uplink control channel, PUCCH); or, the uplink signaling is carried in a physical uplink shared channel (physical uplink shared channel, PUSCH).

[0080] Optionally, in an embodiment of the present application, the above-mentioned uplink signaling can be multiplexed in PUSCH.

[0081] In an embodiment of the present application, the uplink signaling may indicate an index or bit corresponding to a channel access mechanism used by the first communication device and / or the second communication device when accessing a channel. The channel access mechanism used by the first communication device and / or the second communication device when accessing a channel may be indicated by taking the values ​​of the indexes or bitmaps corresponding to different channel access mechanisms.

[0082] It should be noted that for the relevant description on how to indicate the channel access mechanism adopted by the first communication device and / or the second communication device when accessing the channel by taking the value of the bit of the index or bitmap corresponding to the channel access mechanism, please refer to the specific description in the above embodiments. To avoid repetition, it will not be repeated here.

[0083] The channel access mechanism indication method provided in the embodiment of the present application, since when the physical layer signaling indicates that the first communication device adopts the first channel access mechanism to access the channel, after the first communication device sends the physical layer signaling, the first communication device can adopt the first channel access mechanism to access the channel, that is, the first communication device can switch the channel access mechanism. Therefore, the channel access mechanism adopted by the first communication device when accessing the channel can be switched without the transmission of high-level signaling, so that the delay of the first communication device switching the channel access mechanism can be reduced through the transmission of physical layer signaling, thereby enabling the first communication device to quickly switch the channel access mechanism.

[0084] Accordingly, when the physical layer signaling instructs the second communication device to access the channel to adopt the fourth channel access mechanism, after the second communication device receives the physical layer signaling, the second communication device can adopt the fourth channel access mechanism to access the channel, that is, the second communication device can switch the channel access mechanism. Therefore, the channel access mechanism adopted by the second communication device when accessing the channel can be switched without the transmission of high-level signaling, thereby reducing the delay of the second communication device switching the channel access mechanism through the transmission of physical layer signaling, thereby enabling the second communication device to quickly switch the channel access mechanism.

[0085] Optionally, in an embodiment of the present application, when the first communication device is a network side device and the second communication device is a terminal, before the above step 201, the channel access mechanism indication method provided in the embodiment of the present application may also include the following steps 205 and 206.

[0086] Step 205: The network side device sends a first high-layer signaling to the terminal.

[0087] Step 206: The terminal receives the first high-layer signaling sent by the network-side device.

[0088] The first high-layer signaling may indicate a candidate channel access mechanism; and the channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

[0089] It can be understood that the above-mentioned first channel access mechanism may include at least one of the above-mentioned candidate channel access mechanisms; and the above-mentioned fourth channel access mechanism may also include at least one of the candidate channel access mechanisms.

[0090] Optionally, in the embodiment of the present application, the candidate channel access mechanism may include at least two of the following channel access mechanisms:

[0091] LBT mode;

[0092] no-LBT mode;

[0093] Rx-assistedLBT mode;

[0094] receiver-only LBT mode;

[0095] directional LBT mode;

[0096] omni-directional LBT mode;

[0097] quasi-omni-directional LBT mode;

[0098] long-term sensing.

[0099] In an embodiment of the present application, when the above-mentioned first communication device is a network side device and the second communication device is a terminal, the network side device can first configure the candidate channel access mechanism to the terminal through the first high-level signaling, and then when the network side device indicates the channel access mechanism adopted by the network side device and / or the terminal when accessing the channel through the above-mentioned physical layer signaling, the terminal can determine the channel access mechanism adopted by the network side device and / or the terminal when accessing the channel based on the candidate channel access mechanism, such as the above-mentioned first channel access mechanism and fourth channel access mechanism.

[0100] Optionally, in an embodiment of the present application, when the above-mentioned first communication device is a terminal and the above-mentioned second communication device is a network side device, before the above-mentioned step 201, the channel access mechanism indication method provided in the embodiment of the present application may also include the following steps 207 and 208.

[0101] Step 207: The network side device sends a second higher layer signaling to the terminal.

[0102] Step 208: The terminal receives the second high-layer signaling sent by the network-side device.

[0103] The second high-layer signaling may indicate a candidate channel access mechanism; and the channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

[0104] In an embodiment of the present application, when the above-mentioned first communication device is a terminal and the second communication device is a network side device, the network side device can first configure the candidate channel access mechanism to the terminal through the second high-level signaling, and then when the terminal needs to instruct the terminal and / or the network side device to switch the channel access mechanism, the terminal can select the corresponding channel access mechanism (for example, the above-mentioned first channel access mechanism, the fourth channel access mechanism) from the candidate channel access mechanism, and indicate the channel access mechanism through the above-mentioned physical layer signaling, thereby instructing the terminal and / or the network side device to switch the channel access mechanism.

[0105] Optionally, in an embodiment of the present application, when the above-mentioned first communication device is a network side device and the above-mentioned second communication device is a terminal, before the above-mentioned step 201, the channel access mechanism indication method provided in the embodiment of the present application may also include the following steps 209 and 210.

[0106] Step 209: The network side device sends a third high-layer signaling to the terminal.

[0107] Step 210: The terminal receives the third high-layer signaling sent by the network-side device.

[0108] Among them, if the above-mentioned third high-level signaling indicates the second channel access mechanism adopted by the network side device when accessing the channel, then after the network side device sends the third high-level signaling, the network side device can adopt the second channel access mechanism to access the channel; if the above-mentioned third high-level signaling indicates the fifth channel access mechanism adopted when the terminal accesses the channel, then after the terminal receives the third high-level signaling, the terminal can adopt the fifth channel access mechanism to access the channel.

[0109] It can be understood that before the network side device sends the above physical layer signaling, the network side device can configure the channel access mechanism adopted by the network side device and / or the terminal when accessing the channel through the above third high-layer signaling.

[0110] Optionally, in the embodiment of the present application, the second channel access mechanism may include any one of the following channel access mechanisms:

[0111] LBT mode;

[0112] no-LBT mode;

[0113] Rx-assisted LBT mode;

[0114] receiver-only LBT mode;

[0115] directional LBT mode;

[0116] omni-directional LBT mode;

[0117] quasi-omni-directional LBT mode;

[0118] long-term sensing.

[0119] Accordingly, the fifth channel access mechanism may include any one of the following channel access mechanisms:

[0120] LBT mode;

[0121] no-LBT mode;

[0122] Rx-assisted LBT mode;

[0123] receiver-only LBT mode;

[0124] directional LBT mode;

[0125] omni-directional LBT mode;

[0126] quasi-omni-directional LBT mode;

[0127] long-term sensing.

[0128] It should be noted that, in the embodiment of the present application, the second channel access mechanism and the fifth channel access mechanism may be the same channel access mechanism or different channel access mechanisms, which may be determined according to actual use requirements and are not limited in the embodiment of the present application.

[0129] In addition, the second channel access mechanism may be the same as or different from the first channel access mechanism; correspondingly, the fifth channel access mechanism may be the same as or different from the fourth channel access mechanism. In other words, the channel access mechanism indicated by the physical layer signaling may be the same as or different from the old channel access mechanism (such as the channel access mechanism configured by the high-layer signaling or the channel access mechanism indicated by the previous physical layer signaling).

[0130] Optionally, in the embodiment of the present application, the third high-layer signaling may be system information (systeminformation) or radio resource control (radio resource control, RRC) signaling, which may be determined according to actual use requirements and is not limited in the embodiment of the present application.

[0131] In an embodiment of the present application, whether the above-mentioned physical layer signaling indicates the channel access mechanism adopted by the network side device and / or the terminal when accessing the channel can be determined according to the type of the channel access mechanism indicated by the above-mentioned third high-level signaling. Specifically, if the above-mentioned third high-level signaling indicates the channel access mechanism adopted by the network side device when accessing the channel, then the above-mentioned physical layer signaling can indicate the channel access mechanism adopted by the network side device when accessing the channel; if the above-mentioned third high-level signaling indicates the channel access mechanism adopted by the terminal when accessing the channel, then the above-mentioned physical layer signaling can indicate the channel access mechanism adopted by the terminal when accessing the channel; if the above-mentioned third high-level signaling indicates the channel access mechanism adopted by the network side device and the terminal when accessing the channel, then the above-mentioned physical layer signaling can indicate the channel access mechanism adopted by the network side device and / or the terminal when accessing the channel.

[0132] Optionally, in an embodiment of the present application, when the above-mentioned first communication device is a terminal and the second communication device is a network side device, before the above-mentioned step 201, the channel access mechanism indication method provided in the embodiment of the present application may also include the following steps 211 and 212.

[0133] Step 211: The network side device sends a fourth layer signaling to the terminal.

[0134] Step 212: The terminal receives the fourth layer signaling sent by the network side device.

[0135] Among them, if the fourth high-level signaling indicates that the terminal adopts the third channel access mechanism when accessing the channel, then after the terminal receives the fourth high-level signaling, the terminal adopts the third channel access mechanism to access the channel; if the fourth high-level signaling indicates that the network side device adopts the sixth channel access mechanism when accessing the channel, then after the network side device sends the fourth high-level signaling, the network side device adopts the sixth channel access mechanism to access the channel.

[0136] Optionally, in the embodiment of the present application, the third channel access mechanism may include any one of the following channel access mechanisms:

[0137] LBT mode;

[0138] no-LBT mode;

[0139] Rx-assisted LBT mode;

[0140] receiver-only LBT mode;

[0141] directional LBT mode;

[0142] omni-directional LBT mode;

[0143] quasi-omni-directional LBT mode;

[0144] long-term sensing.

[0145] Accordingly, the sixth channel access mechanism may include any one of the following channel access mechanisms:

[0146] LBT mode;

[0147] no-LBT mode;

[0148] Rx-assisted LBT mode;

[0149] receiver-only LBT mode;

[0150] directional LBT mode;

[0151] omni-directional LBT mode;

[0152] quasi-omni-directional LBT mode;

[0153] long-term sensing.

[0154] It should be noted that, in the embodiment of the present application, the third channel access mechanism and the sixth channel access mechanism may be the same channel access mechanism or different channel access mechanisms, which may be determined according to actual use requirements and are not limited in the embodiment of the present application.

[0155] In addition, the third channel access mechanism may be the same as or different from the first channel access mechanism; correspondingly, the sixth channel access mechanism may be the same as or different from the fourth channel access mechanism. In other words, the channel access mechanism indicated by the physical layer signaling may be the same as or different from the old channel access mechanism (such as the channel access mechanism configured by the high-layer signaling or the channel access mechanism indicated by the previous physical layer signaling).

[0156] In the embodiment of the present application, for the relevant description of the fourth high-layer signaling, reference may be made to the relevant description of the third high-layer signaling in the above embodiment, which will not be repeated here to avoid repetition.

[0157] In the embodiment of the present application, as an optional manner, the above-mentioned first high-level signaling, second high-level signaling, third high-level signaling, fourth high-level signaling, fifth high-level signaling, sixth high-level signaling, seventh high-level signaling, and eighth high-level signaling may be different signalings. As another optional manner, the above-mentioned fifth high-level signaling and the first high-level signaling may be the same signaling, that is, the first high-level signaling may also be called the fifth high-level signaling, the above-mentioned sixth high-level signaling and the second high-level signaling may be the same signaling, that is, the second high-level signaling may also be called the sixth high-level signaling, the above-mentioned seventh high-level signaling and the third high-level signaling may be the same signaling, that is, the third high-level signaling may also be called the seventh high-level signaling, the above-mentioned eighth high-level signaling and the fourth high-level signaling may be the same signaling, that is, the fourth high-level signaling may also be called the eighth high-level signaling. The specific can be determined according to the actual use requirements, and the embodiment of the present application is not limited.

[0158] Next, taking the network side device as gNB and the terminal as UE as an example, the channel access mechanism indication method provided in the embodiment of the present application is exemplarily explained.

[0159] Implementation Method 1

[0160] If the gNB configures the channel access mechanism used by the gNB and / or UE to access the channel through high-layer signaling, the gNB or UE can override the high-layer signaling through physical layer signaling. If the high-layer signaling configures the channel access mechanism of the gNB and UE, the physical layer signaling can indicate any of the following:

[0161] The channel access mechanism used by the gNB and UE when accessing the channel, that is, rewriting the corresponding channel access mechanism of the gNB and UE at the same time;

[0162] The channel access mechanism used by the UE when accessing the channel, that is, only the channel access mechanism corresponding to the UE is rewritten;

[0163] The channel access mechanism used by gNB when accessing the channel, that is, only the channel access mechanism corresponding to gNB is rewritten.

[0164] If the gNB configures the channel access mechanism corresponding to the UE through high-layer signaling, the physical layer signaling may indicate the new channel access mechanism corresponding to the UE. The high-layer signaling may include system information or RRC signaling.

[0165] In an embodiment of the present application, a new physical layer signaling indication may override an old physical layer signaling indication. Before receiving a new physical layer signaling, the gNB and / or UE uses the channel access mechanism indicated by the old physical layer signaling to access the channel.

[0166] Optionally, in an embodiment of the present application, the gNB or UE may indicate a channel access mechanism corresponding to both the gNB and the UE, or may indicate a channel access mechanism corresponding to the gNB or the UE.

[0167] Implementation Method 2

[0168] The gNB configures all candidate channel access mechanisms through high-level signaling. Candidate channel access mechanisms include at least two of the following channel access mechanisms: LBT mode, no-LBT mode, Rx-assisted LBT mode, receiver-only LBT mode, directional LBT mode, (quasi-)omni-directional LBT mode, omni-directional LBT mode, and long-term sensing. Each channel access mechanism may correspond to an index or a bit. The gNB or UE indicates one or more of the above candidate channel access mechanisms through physical layer signaling. The physical layer signaling may indicate the index corresponding to the channel access mechanism, or indicate whether the channel access mechanism is adopted by the value of the bit of the corresponding bitmap. Taking the 7 candidate channel access mechanisms listed above as an example, the physical layer signaling may use a 3-bit index to indicate the channel access mechanism by indexing them in the order listed. When the index indicated by the physical layer signaling is 001, the physical layer signaling indicates that the no-LBT mode is used to access the channel. Or the physical layer signaling uses a 7-bit bitmap, each bit corresponds to a channel access mechanism. When the bit value is 1, it indicates that the channel access mechanism is adopted, and when the bit value is zero, it indicates that the channel access mechanism is not adopted. It should be noted that when two candidate channel access mechanisms are included, 1 bit can be used to indicate. The value 0 / 1 of this bit indicates one of the two candidate channel access mechanisms respectively.

[0169] Optionally, in an embodiment of the present application, the gNB or UE may indicate a channel access mechanism corresponding to both the gNB and the UE, or indicate a channel access mechanism corresponding to the gNB or the UE through physical layer signaling.

[0170] Implementation Method 3

[0171] For gNB, the gNB can indicate the channel access mechanism through GC-PDCCH or scheduling DCI. The field corresponding to the index or bit of the channel access mechanism can be added to the GC-PDCCH or scheduling DCI. Before receiving a new GC-PDCCH or scheduling DCI, the gNB and / or UE access the channel according to the old indication. For example, if the UE detects a signal in each GC-PDCCH period, the UE accesses the channel using the new channel access mechanism indicated by the GC-PDCCH in the new period. If the UE does not detect a signal in a certain period of GC-PDCCH, the UE continues to access the channel using the previous channel access mechanism until the next GC-PDCCH is detected. The new channel access mechanism indicated by the gNB may be the same as or different from the channel access mechanism indicated by the previous scheduling.

[0172] Optionally, in an embodiment of the present application, the validity period of the channel access mechanism indicated by the GC-PDCCH is greater than or equal to the period of the GC-PDCCH; the validity period of the scheduling DCI may be the time of each scheduled transmission.

[0173] Implementation Method 4

[0174] For UE, the UE can indicate the channel access mechanism to the gNB through an uplink channel or signaling. The uplink signal or signaling can be an RS sequence (DMRS or SRS), a preamble (PRACH) or a specific uplink signaling.

[0175] Different RS sequences or groups of RS sequences may correspond to different channel access mechanisms. For example, RS sequence 1 represents channel access mechanism 1, RS sequence 2 represents channel access mechanism 2, and so on. Or any sequence in group 1 of RS sequence represents channel access mechanism 1, and any sequence in group 2 of RS sequence represents channel access mechanism 2, and so on. In addition, different preambles may be used to indicate different channel access mechanisms. For example, preamble 1 represents channel access mechanism 1, preamble 2 represents channel access mechanism 2, and so on. Or any sequence in group 1 of preamble represents channel access mechanism 1, and any sequence in group 2 of preamble represents channel access mechanism 2, and so on.

[0176] For UE, new uplink signaling can also be used to indicate the channel access mechanism. The uplink signaling can indicate the index or bit corresponding to the channel access mechanism, and the channel access mechanism can be indicated by different indexes or bitmap bit values. The uplink signaling can be carried in PUCCH or multiplexed in PUSCH. For example, index 001 indicates channel access mechanism 1, 010 indicates channel access mechanism 2, and so on. Bitmap 0000001 indicates channel access mechanism 1, 0000010 indicates channel access mechanism 2, and so on.

[0177] It should be noted that the channel access mechanism indication method provided in the embodiment of the present application can be executed by a channel access mechanism indication device, or a control module in the channel access mechanism indication device for executing the channel access mechanism indication method. In the embodiment of the present application, the channel access mechanism indication device provided in the embodiment of the present application is described by taking the channel access mechanism indication method executed by the channel access mechanism indication device as an example.

[0178] like Figure 3 As shown, the embodiment of the present application provides a channel access mechanism indication device 300, which includes a sending module 301 and an access module 302. The sending module 301 is used to send physical layer signaling to the second communication device; if the physical layer signaling indicates the first channel access mechanism used by the first communication device to access the channel, the access module 302 is used to access the channel using the first channel access mechanism after sending the physical layer signaling.

[0179] Optionally, in an embodiment of the present application, the first communication device is a network side device, and the second communication device is a terminal; the sending module is also used to send a first high-level signaling to the terminal before sending a physical layer signaling to the second communication device, and the first high-level signaling indicates a candidate channel access mechanism; wherein the channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

[0180] Optionally, in an embodiment of the present application, the first communication device is a terminal, and the second communication device is a network side device; the channel access mechanism indication device also includes a receiving module; the receiving module is used to receive a second high-level signaling sent by the network side device before sending a physical layer signaling to the second communication device, and the second high-level signaling indicates a candidate channel access mechanism; wherein the channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

[0181] Optionally, in the embodiment of the present application, the candidate channel access mechanism includes at least two of the following channel access mechanisms:

[0182] LBT mode;

[0183] no-LBT mode;

[0184] Rx-assisted LBT mode;

[0185] receiver-only LBT mode;

[0186] directional LBT mode;

[0187] omni-directional LBT mode;

[0188] quasi-omni-directional LBT mode;

[0189] long-term sensing.

[0190] Optionally, in an embodiment of the present application, the first communication device is a network side device, and the second communication device is a terminal; the sending module is also used to send a third high-level signaling to the terminal before sending a physical layer signaling to the second communication device; if the third high-level signaling indicates a second channel access mechanism to be adopted when the network side device accesses the channel, the access module is also used to access the channel using the second channel access mechanism after sending the third high-level signaling.

[0191] Optionally, in an embodiment of the present application, the first communication device is a terminal, and the second communication device is a network side device; the channel access mechanism indication device also includes a receiving module; the receiving module is used to receive the fourth high-level signaling sent by the network side device before sending the physical layer signaling to the second communication device; if the fourth high-level signaling indicates the third channel access mechanism adopted when the terminal accesses the channel, the access module is also used to adopt the third channel access mechanism to access the channel after receiving the fourth high-level signaling.

[0192] Optionally, in an embodiment of the present application, the first communication device is a network side device, and the physical layer signaling is GC PDCCH or scheduling DCI.

[0193] Optionally, in an embodiment of the present application, the physical layer signaling includes an index corresponding to a channel access mechanism adopted by the first communication device and / or the second communication device when accessing the channel; or, the physical layer signaling includes a bitmap, and the value of the bit position of the bitmap indicates whether the first communication device and / or the second communication device adopts the channel access mechanism corresponding to the bit position to access the channel.

[0194] Optionally, in an embodiment of the present application, the first communication device is a terminal, and the physical layer signaling is an uplink signal or uplink signaling.

[0195] Optionally, in the embodiment of the present application, the uplink signal includes any one of the following:

[0196] RS sequence;

[0197] Preamble;

[0198] Among them, different RS sequences or groups of RS sequences indicate different channel access mechanisms, and different preamble codes or groups of preamble codes indicate different channel access mechanisms.

[0199] Optionally, in an embodiment of the present application, uplink signaling is carried in PUCCH; or, uplink signaling is carried in PUSCH.

[0200] An embodiment of the present application provides a channel access mechanism indication device. When physical layer signaling indicates that a first communication device adopts a first channel access mechanism to access a channel, after sending the physical layer signaling, the first communication device can adopt the first channel access mechanism to access the channel, that is, the first communication device can switch the channel access mechanism. Therefore, the channel access mechanism adopted by the first communication device when accessing the channel can be switched without the need for transmission of high-level signaling, thereby reducing the delay of the first communication device switching the channel access mechanism through the transmission of physical layer signaling, thereby enabling the first communication device to quickly switch the channel access mechanism.

[0201] like Figure 4 As shown, an embodiment of the present application provides a channel access mechanism indication device 400, which includes a receiving module 401 and an access module 402. The receiving module 401 is used to receive a physical layer signaling sent by a first communication device; if the physical layer signaling indicates a fourth channel access mechanism to be adopted when the second communication device accesses a channel, the access module 402 is used to adopt the fourth channel access mechanism to access the channel after receiving the physical layer signaling.

[0202] Optionally, in an embodiment of the present application, the first communication device is a network side device, and the second communication device is a terminal; the receiving module is used to receive the fifth high-level signaling sent by the network side device before receiving the physical layer signaling sent by the first communication device, and the fifth high-level signaling indicates a candidate channel access mechanism; wherein the channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

[0203] Optionally, in an embodiment of the present application, the first communication device is a terminal, and the second communication device is a network side device; the channel access mechanism indication device also includes a sending module; the sending module is used to send a sixth high-level signaling to the terminal before receiving the physical layer signaling sent by the first communication device, and the sixth high-level signaling indicates a candidate channel access mechanism; wherein the channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

[0204] Optionally, in the embodiment of the present application, the candidate channel access mechanism includes at least two of the following channel access mechanisms:

[0205] LBT mode;

[0206] no-LBT mode;

[0207] Rx-assisted LBT mode;

[0208] receiver-only LBT mode;

[0209] directional LBT mode;

[0210] omni-directional LBT mode;

[0211] quasi-omni-directional LBT mode;

[0212] long-term sensing.

[0213] Optionally, in an embodiment of the present application, the first communication device is a network side device, and the second communication device is a terminal; the receiving module is also used to receive the seventh high-layer signaling sent by the network side device before receiving the physical layer signaling sent by the first communication device; if the seventh high-layer signaling indicates the fifth channel access mechanism adopted when the terminal accesses the channel, the access module is also used to access the channel using the fifth channel access mechanism after receiving the seventh high-layer signaling.

[0214] Optionally, in an embodiment of the present application, the first communication device is a terminal, and the second communication device is a network side device; the channel access mechanism indication device also includes a sending module; the sending module is used to send an eighth high-level signaling to the terminal before receiving the physical layer signaling sent by the first communication device; if the eighth high-level signaling indicates the sixth channel access mechanism adopted by the network side device when accessing the channel, the access module is also used to adopt the sixth channel access mechanism to access the channel after sending the eighth high-level signaling.

[0215] Optionally, in an embodiment of the present application, the first communication device is a network side device, and the physical layer signaling is GC PDCCH or scheduling DCI.

[0216] Optionally, in an embodiment of the present application, the physical layer signaling includes an index corresponding to a channel access mechanism adopted by the first communication device and / or the second communication device when accessing the channel; or, the physical layer signaling includes a bitmap, and the value of the bit position of the bitmap indicates whether the first communication device and / or the second communication device adopts the channel access mechanism corresponding to the bit position to access the channel.

[0217] Optionally, in an embodiment of the present application, the first communication device is a terminal, and the physical layer signaling is an uplink signal or uplink signaling.

[0218] Optionally, in the embodiment of the present application, the uplink signal includes any one of the following:

[0219] RS sequence;

[0220] Preamble;

[0221] Among them, different RS sequences or groups of RS sequences indicate different channel access mechanisms, and different preamble codes or groups of preamble codes indicate different channel access mechanisms.

[0222] Optionally, in an embodiment of the present application, uplink signaling is carried in PUCCH; or, uplink signaling is carried in PUSCH.

[0223] Optionally, in an embodiment of the present application, before the receiving module receives the physical layer signaling, the second communication device accesses the channel according to the channel access mechanism used last time.

[0224] An embodiment of the present application provides a channel access mechanism indication device. When the physical layer signaling indicates that the second communication device adopts the fourth channel access mechanism to access the channel, after receiving the physical layer signaling, the second communication device can adopt the fourth channel access mechanism to access the channel, that is, the second communication device can switch the channel access mechanism. Therefore, the channel access mechanism adopted by the second communication device when accessing the channel can be switched without the transmission of high-level signaling, so that the delay of the second communication device switching the channel access mechanism can be reduced through the transmission of physical layer signaling, thereby enabling the second communication device to quickly switch the channel access mechanism.

[0225] The channel access mechanism indication device in the embodiment of the present application can be a device, a device or electronic device with an operating system, or a component, an integrated circuit, or a chip in a terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal can include but is not limited to the types of terminals 11 listed above, and the non-mobile terminal can be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.

[0226] The channel access mechanism indication device provided in the embodiment of the present application can implement the various processes implemented in the above method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0227] Alternatively, if Figure 5 As shown, the embodiment of the present application also provides a communication device 500, including a processor 501, a memory 502, and a program or instruction stored in the memory 502 and executable on the processor 501. For example, when the communication device 500 is a terminal, the program or instruction is executed by the processor 501 to implement the various processes of the above-mentioned channel access mechanism indication method embodiment, and can achieve the same technical effect. When the communication device 500 is a network side device, the program or instruction is executed by the processor 501 to implement the various processes of the above-mentioned channel access mechanism indication method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0228] An embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface is used to send physical layer signaling to a second communication device; if the physical layer signaling indicates a first channel access mechanism to be adopted when the terminal accesses the channel, then after sending the physical layer signaling, the first channel access mechanism is adopted to access the channel; or, the communication interface is used to receive physical layer signaling sent by the first communication device; wherein, if the physical layer signaling indicates a fourth channel access mechanism to be adopted when the terminal accesses the channel, then after receiving the physical layer signaling, the fourth channel access mechanism is adopted to access the channel. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, Figure 6 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0229] The terminal 100 includes but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, and at least some of the components of a processor 110.

[0230] Those skilled in the art will appreciate that the terminal 100 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 110 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Figure 6 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0231] It should be understood that in the embodiment of the present application, the input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042, and the graphics processor 1041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 107 includes a touch panel 1071 and other input devices 1072. The touch panel 1071 is also called a touch screen. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0232] In the embodiment of the present application, the radio frequency unit 101 receives downlink data from the network side device and sends it to the processor 110 for processing; in addition, the uplink data is sent to the network side device. Generally, the radio frequency unit 101 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0233] The memory 109 can be used to store software programs or instructions and various data. The memory 109 can mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area can store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 109 can include a high-speed random access memory, and can also include a non-volatile memory, wherein the non-volatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device.

[0234] The processor 110 may include one or more processing units; optionally, the processor 110 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs or instructions, etc., and the modem processor mainly processes wireless communications, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 110.

[0235] Among them, the radio frequency unit is used to send physical layer signaling to the network side device; and if the physical layer signaling indicates the first channel access mechanism adopted when the terminal accesses the channel, then after sending the physical layer signaling, the first channel access mechanism is adopted to access the channel.

[0236] The terminal provided in the embodiment of the present application, because when the physical layer signaling indicates that the first channel access mechanism is adopted when the terminal accesses the channel, after the terminal sends the physical layer signaling, the terminal can adopt the first channel access mechanism to access the channel, that is, the terminal can switch the channel access mechanism. Therefore, there is no need to transmit high-level signaling to switch the channel access mechanism adopted by the terminal when accessing the channel, so that the delay of the terminal switching the channel access mechanism can be reduced through the transmission of physical layer signaling, thereby enabling the terminal to quickly switch the channel access mechanism.

[0237] Alternatively, the radio frequency unit is used to receive physical layer signaling sent by the network side device; and if the physical layer signaling indicates the fourth channel access mechanism adopted when the terminal accesses the channel, then after receiving the physical layer signaling, the fourth channel access mechanism is adopted to access the channel.

[0238] The channel access mechanism indication method provided in the embodiment of the present application, since when the physical layer signaling indicates the fourth channel access mechanism to be adopted when the terminal accesses the channel, after the terminal receives the physical layer signaling, the terminal can adopt the fourth channel access mechanism to access the channel, that is, the terminal can switch the channel access mechanism. Therefore, the channel access mechanism adopted when the terminal accesses the channel can be switched without the need for transmission of high-level signaling, thereby reducing the delay of the terminal switching the channel access mechanism through the transmission of physical layer signaling, thereby enabling the terminal to quickly switch the channel access mechanism.

[0239] The embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface is used to send physical layer signaling to a second communication device; wherein, if the physical layer signaling indicates the first channel access mechanism adopted by the network side device when accessing the channel, then after sending the physical layer signaling, the first channel access mechanism is used to access the channel; or, the communication interface is used to receive physical layer signaling sent by the first communication device; wherein, if the physical layer signaling indicates the fourth channel access mechanism adopted by the network side device when accessing the channel, then after receiving the physical layer signaling, the fourth channel access mechanism is used to access the channel. This network side device embodiment corresponds to the above-mentioned network side device method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this network side device embodiment, and can achieve the same technical effect.

[0240] Specifically, the embodiment of the present application also provides a network side device. Figure 7As shown, the network side device 700 includes: an antenna 71, a radio frequency device 72, and a baseband device 73. The antenna 71 is connected to the radio frequency device 72. In the uplink direction, the radio frequency device 72 receives information through the antenna 71 and sends the received information to the baseband device 73 for processing. In the downlink direction, the baseband device 73 processes the information to be sent and sends it to the radio frequency device 72. The radio frequency device 72 processes the received information and sends it out through the antenna 71.

[0241] The frequency band processing device may be located in a baseband device 73 . The method executed by the network-side device in the above embodiment may be implemented in the baseband device 73 . The baseband device 73 includes a processor 74 and a memory 75 .

[0242] The baseband device 73 may include, for example, at least one baseband board on which a plurality of chips are arranged. Figure 7 As shown, one of the chips is, for example, a processor 74, which is connected to a memory 75 to call a program in the memory 75 to execute the network-side device operations shown in the above method embodiment.

[0243] The baseband device 73 may further include a network interface 76 for exchanging information with the radio frequency device 72 , and the interface may be, for example, a common public radio interface (CPRI for short).

[0244] Specifically, the network side device of the embodiment of the present invention further includes: instructions or programs stored in the memory 75 and executable on the processor 74, and the processor 74 calls the instructions or programs in the memory 75 to execute Figure 4 or Figure 5 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0245] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned channel access mechanism indication method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0246] The processor is the processor in the terminal in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0247] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned channel access mechanism indication method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0248] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0249] It should be noted that, in this article, the term "comprises", "includes" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0250] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network-side device, etc.) to execute the methods of each embodiment of the present application.

[0251] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A channel access mechanism indication method, characterized in that: The method comprises: The first communication device sends physical layer signaling to the second communication device; If the physical layer signaling indicates a first channel access mechanism adopted by the first communication device when accessing a channel, then after the first communication device sends the physical layer signaling, the first communication device accesses the channel using the first channel access mechanism; In the case where the first communication device is a network side device and the second communication device is a terminal, before the first communication device sends physical layer signaling to the second communication device, the method further includes: The network side device sends a third high-layer signaling to the terminal; If the third high-layer signaling indicates the second channel access mechanism adopted by the network-side device when accessing the channel, after the network-side device sends the third high-layer signaling, the network-side device adopts the second channel access mechanism to access the channel; In the case where the first communication device is a terminal and the second communication device is a network side device, before the first communication device sends physical layer signaling to the second communication device, the method further includes: The terminal receives a fourth layer signaling sent by the network side device; If the fourth higher layer signaling indicates a third channel access mechanism adopted by the terminal when accessing a channel, after the terminal receives the fourth higher layer signaling, the terminal adopts the third channel access mechanism to access the channel.

2. The method according to claim 1, characterized in that In the case where the first communication device is a network side device and the second communication device is a terminal, before the first communication device sends physical layer signaling to the second communication device, the method further includes: The network side device sends a first high-layer signaling to the terminal, where the first high-layer signaling indicates a candidate channel access mechanism; The channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

3. The method according to claim 1, characterized in that: In the case where the first communication device is a terminal and the second communication device is a network side device, before the first communication device sends physical layer signaling to the second communication device, the method further includes: The terminal receives a second high-layer signaling sent by the network-side device, where the second high-layer signaling indicates a candidate channel access mechanism; The channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

4. The method according to claim 2 or 3, characterized in that: The candidate channel access mechanism includes at least two of the following channel access mechanisms: Listen first, speak later LBT mode; No-LBT mode; Receiver-assisted LBT mode; Receive-side LBT mode only; Directional LBT mode; Omnidirectional LBT mode; Quasi-omnidirectional LBT mode; Long-term testing.

5. The method according to claim 1, characterized in that In the case where the first communication device is a network side device, the physical layer signaling is a group common physical downlink control channel GC PDCCH or scheduling downlink control information DCI.

6. The method according to claim 5, characterized in that The physical layer signaling includes an index corresponding to a channel access mechanism used by the first communication device and / or the second communication device when accessing a channel; or, The physical layer signaling includes a bitmap, and the value of the bit of the bitmap indicates whether the first communication device and / or the second communication device uses the channel access mechanism corresponding to the bit to access the channel.

7. The method according to claim 1, characterized in that When the first communication device is a terminal, the physical layer signaling is an uplink signal or uplink signaling.

8. The method according to claim 7, characterized in that The uplink signal includes any one of the following: Reference signal RS sequence; Preamble; Among them, different RS sequences or groups of RS sequences indicate different channel access mechanisms, and different preamble codes or groups of preamble codes indicate different channel access mechanisms.

9. The method according to claim 7, characterized in that: The uplink signaling is carried in a physical uplink control channel PUCCH; or, The uplink signaling is carried in the physical uplink shared channel PUSCH.

10. A channel access mechanism indication method, characterized in that: The method comprises: The second communication device receives the physical layer signaling sent by the first communication device; If the physical layer signaling indicates a fourth channel access mechanism adopted by the second communication device when accessing a channel, then after the second communication device receives the physical layer signaling, the second communication device adopts the fourth channel access mechanism to access the channel; In the case where the first communication device is a network side device and the second communication device is a terminal, before the second communication device receives the physical layer signaling sent by the first communication device, the method further includes: The terminal receives the seventh high-layer signaling sent by the network side device; If the seventh high-layer signaling indicates a fifth channel access mechanism adopted by the terminal when accessing the channel, after the terminal receives the seventh high-layer signaling, the terminal adopts the fifth channel access mechanism to access the channel; In the case where the first communication device is a terminal and the second communication device is a network side device, before the second communication device receives the physical layer signaling sent by the first communication device, the method further includes: The network side device sends an eighth high-layer signaling to the terminal; If the eighth high-layer signaling indicates the sixth channel access mechanism adopted by the network side device when accessing the channel, after the network side device sends the eighth high-layer signaling, the network side device adopts the sixth channel access mechanism to access the channel.

11. The method according to claim 10, characterized in that In the case where the first communication device is a network side device and the second communication device is a terminal, before the second communication device receives the physical layer signaling sent by the first communication device, the method further includes: The terminal receives a fifth high-layer signaling sent by the network-side device, where the fifth high-layer signaling indicates a candidate channel access mechanism; The channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

12. The method according to claim 10, characterized in that In the case where the first communication device is a terminal and the second communication device is a network side device, before the second communication device receives the physical layer signaling sent by the first communication device, the method further includes: The network side device sends a sixth high-layer signaling to the terminal, where the sixth high-layer signaling indicates a candidate channel access mechanism; The channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

13. The method according to claim 11 or 12, characterized in that: The candidate channel access mechanism includes at least two of the following channel access mechanisms: Listen first and speak later LBT mode; No-LBT mode; Receiver-assisted LBT mode; Receive-side LBT mode only; Directional LBT mode; Omnidirectional LBT mode; Quasi-omnidirectional LBT mode; Long-term testing.

14. The method according to claim 10, characterized in that In the case where the first communication device is a network side device, the physical layer signaling is a group common physical downlink control channel GC PDCCH or scheduling downlink control information DCI.

15. The method according to claim 14, characterized in that The physical layer signaling includes an index corresponding to a channel access mechanism used by the first communication device and / or the second communication device when accessing a channel; or, The physical layer signaling includes a bitmap, and the value of the bit of the bitmap indicates whether the first communication device and / or the second communication device uses the channel access mechanism corresponding to the bit to access the channel.

16. The method according to claim 10, characterized in that When the first communication device is a terminal, the physical layer signaling is an uplink signal or uplink signaling.

17. The method according to claim 16, characterized in that The uplink signal includes any one of the following: Reference signal RS sequence; Preamble; Among them, different RS sequences or groups of RS sequences indicate different channel access mechanisms, and different preamble codes or groups of preamble codes indicate different channel access mechanisms.

18. The method according to claim 16, characterized in that The uplink signaling is carried in a physical uplink control channel PUCCH; or, The uplink signaling is carried in the physical uplink shared channel PUSCH.

19. The method according to claim 10, characterized in that Before the second communication device receives the physical layer signaling, the second communication device accesses the channel according to the channel access mechanism used last time.

20. A channel access mechanism indication device, characterized in that: The channel access mechanism indication device includes a sending module and an access module; The sending module is used to send physical layer signaling to the second communication device; If the physical layer signaling indicates a first channel access mechanism adopted by the first communication device when accessing a channel, the access module is configured to access the channel by adopting the first channel access mechanism after sending the physical layer signaling; When the first communication device is a network side device and the second communication device is a terminal, the sending module is further used to send a third high-layer signaling to the terminal before sending the physical layer signaling to the second communication device; If the third high-layer signaling indicates the second channel access mechanism adopted by the network-side device when accessing the channel, the access module is further configured to access the channel by adopting the second channel access mechanism after sending the third high-layer signaling; In the case where the first communication device is a terminal and the second communication device is a network side device, the channel access mechanism indication device further includes a receiving module; The receiving module is used to receive the fourth high-layer signaling sent by the network side device before sending the physical layer signaling to the second communication device; If the fourth higher layer signaling indicates a third channel access mechanism to be adopted when the terminal accesses a channel, the access module is further configured to adopt the third channel access mechanism to access the channel after receiving the fourth higher layer signaling.

21. The device according to claim 20, characterized in that In the case where the first communication device is a network side device and the second communication device is a terminal, the sending module is further used to send a first high-layer signaling to the terminal before sending a physical layer signaling to the second communication device, where the first high-layer signaling indicates a candidate channel access mechanism; The channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

22. The device according to claim 20, characterized in that In the case where the first communication device is a terminal and the second communication device is a network side device, the receiving module is further used to receive a second high-layer signaling sent by the network side device before sending a physical layer signaling to the second communication device, where the second high-layer signaling indicates a candidate channel access mechanism; The channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

23. The device according to claim 21 or 22, characterized in that The candidate channel access mechanism includes at least two of the following channel access mechanisms: Listen first, speak later LBT mode; No-LBT mode; Receiver-assisted LBT mode; Receive-side LBT mode only; Directional LBT mode; Omnidirectional LBT mode; Quasi-omnidirectional LBT mode; Long-term testing.

24. The device according to claim 20, characterized in that In the case where the first communication device is a network side device, the physical layer signaling is a group common physical downlink control channel GC PDCCH or scheduling downlink control information DCI.

25. The device according to claim 24, characterized in that The physical layer signaling includes an index corresponding to a channel access mechanism used by the first communication device and / or the second communication device when accessing a channel; or, The physical layer signaling includes a bitmap, and the value of the bit of the bitmap indicates whether the first communication device and / or the second communication device uses the channel access mechanism corresponding to the bit to access the channel.

26. The device according to claim 20, characterized in that When the first communication device is a terminal, the physical layer signaling is an uplink signal or uplink signaling.

27. The device according to claim 26, characterized in that The uplink signal includes any one of the following: Reference signal RS sequence; Preamble; Among them, different RS sequences or groups of RS sequences indicate different channel access mechanisms, and different preamble codes or groups of preamble codes indicate different channel access mechanisms.

28. The device according to claim 26, characterized in that The uplink signaling is carried in a physical uplink control channel PUCCH; or, The uplink signaling is carried in the physical uplink shared channel PUSCH.

29. A channel access mechanism indication device, characterized in that: The channel access mechanism indication device comprises a receiving module and an access module; The receiving module is used to receive the physical layer signaling sent by the first communication device; If the physical layer signaling indicates a fourth channel access mechanism adopted by the second communication device when accessing the channel, the access module is configured to access the channel using the fourth channel access mechanism after receiving the physical layer signaling; When the first communication device is a network side device and the second communication device is a terminal, the receiving module is further used to receive the seventh high-layer signaling sent by the network side device before receiving the physical layer signaling sent by the first communication device; If the seventh high-level signaling indicates the fifth channel access mechanism adopted by the terminal when accessing the channel, the access module is further configured to access the channel by adopting the fifth channel access mechanism after receiving the seventh high-level signaling; In the case where the first communication device is a terminal and the second communication device is a network side device, the channel access mechanism indication device further includes a sending module; The sending module is used to send an eighth high-layer signaling to the terminal before receiving the physical layer signaling sent by the first communication device; If the eighth high-layer signaling indicates the sixth channel access mechanism adopted by the network side device when accessing the channel, the access module is used to access the channel by adopting the sixth channel access mechanism after sending the eighth high-layer signaling.

30. The device according to claim 29, characterized in that When the first communication device is a network side device and the second communication device is a terminal, the receiving module is further configured to receive a fifth high-layer signaling sent by the network side device before receiving the physical layer signaling sent by the first communication device, wherein the fifth high-layer signaling indicates a candidate channel access mechanism; The channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

31. The device according to claim 29, characterized in that When the first communication device is a terminal and the second communication device is a network side device, the sending module is further used to send a sixth high-layer signaling to the terminal before receiving the physical layer signaling sent by the first communication device, wherein the sixth high-layer signaling indicates a candidate channel access mechanism; The channel access mechanism indicated by the physical layer signaling includes at least one channel access mechanism among the candidate channel access mechanisms.

32. The device according to claim 30 or 31, characterized in that The candidate channel access mechanism includes at least two of the following channel access mechanisms: Listen first and speak later LBT mode; No-LBT mode; Receiver-assisted LBT mode; Receive-side LBT mode only; Directional LBT mode; Omnidirectional LBT mode; Quasi-omnidirectional LBT mode; Long-term testing.

33. The device according to claim 29, characterized in that In the case where the first communication device is a network side device, the physical layer signaling is a group common physical downlink control channel GC PDCCH or scheduling downlink control information DCI.

34. The device according to claim 33, characterized in that The physical layer signaling includes an index corresponding to a channel access mechanism used by the first communication device and / or the second communication device when accessing a channel; or, The physical layer signaling includes a bitmap, and the value of the bit of the bitmap indicates whether the first communication device and / or the second communication device uses the channel access mechanism corresponding to the bit to access the channel.

35. The device according to claim 29, characterized in that When the first communication device is a terminal, the physical layer signaling is an uplink signal or uplink signaling.

36. The device according to claim 35, characterized in that The uplink signal includes any one of the following: Reference signal RS sequence; Preamble; Among them, different RS sequences or groups of RS sequences indicate different channel access mechanisms, and different preamble codes or groups of preamble codes indicate different channel access mechanisms.

37. The device according to claim 35, characterized in that The uplink signaling is carried in a physical uplink control channel PUCCH; or, The uplink signaling is carried in the physical uplink shared channel PUSCH.

38. The device according to claim 29, characterized in that Before the receiving module receives the physical layer signaling, the second communication device accesses the channel according to the channel access mechanism used last time.

39. A communication device, characterized in that: It includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the channel access mechanism indication method as described in any one of claims 1 to 19.

40. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the channel access mechanism indication method as described in any one of claims 1-19 are implemented.

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