Communication method and device, network equipment and terminal equipment

Abstract

The invention discloses a communication method and device, network equipment and terminal equipment, and relates to the technical field of communication. The method comprises the following steps: network equipment sends a wake-up signal at a frequency domain position or a time domain position, wherein the frequency domain position or the time domain position corresponds to a first terminal equipment identification part; correspondingly, the terminal device monitors the wake-up signal at the frequency domain position or the time domain position. Visibly, the frequency domain position or the time domain position can correspond to the first terminal equipment identification part, and different frequency domain positions or different time domain positions can correspond to different first terminal equipment identification parts; therefore, the network equipment can wake up the terminal equipment with different terminal equipment identifiers at different frequency domain positions or different time domain positions. Correspondingly, the terminal devices with different identifiers can monitor respective wake-up signals at different frequency domain positions or different time domain positions, thereby realizing frequency division multiplexing of a plurality of wake-up signals.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method and apparatus, a network device, and a terminal device. Background Art

[0002] In order to reduce the power consumption of a terminal device, a low power wake-up signal (LP-WUS, hereinafter referred to as a wake-up signal for short) mechanism has been introduced currently.

[0003] Under the wake-up signal mechanism, the terminal device can only turn on a low power wake-up signal receiver independent of the main radio (MR). In this way, the terminal device can both turn off the main radio to achieve the purpose of energy saving (reducing power consumption), and can wait to be woken up by the network by listening for the wake-up signal through the low power wake-up signal receiver, so as to achieve the purpose of network reachability. In short, through the main radio and the low power wake-up signal receiver, the purposes of both energy saving and network reachability can be achieved simultaneously.

[0004] Under certain conditions, the bandwidth of the wake-up signal will be very small, and at this time, the wake-up signal is called a "narrowband wake-up signal". However, in order to make the best use of the broadband bandwidth and improve the resource utilization rate, multiple narrowband wake-up signals may need to support frequency division multiplexing. Summary of the Invention

[0005] This application provides a communication method and apparatus, a network device, and a terminal device, aiming to solve the problem of how to ensure communication under the frequency division multiplexing of multiple narrowband wake-up signals.

[0006] In a first aspect, a communication method of this application includes:

[0007] Sending a wake-up signal at a frequency domain position or a time domain position, where the frequency domain position or the time domain position corresponds to a first terminal device identification part.

[0008] It can be seen that since the frequency domain position or the time domain position can be corresponding to the first terminal device identification part, and different frequency domain positions or different time domain positions can correspond to different first terminal device identification parts, the network device can wake up terminal devices with different terminal device identifications at different frequency domain positions or different time domain positions. Correspondingly, terminal devices with different identifications can listen for their respective wake-up signals at different frequency domain positions or different time domain positions, so as to realize frequency division multiplexing of multiple wake-up signals. Among them, frequency division multiplexing of multiple wake-up signals can increase the grouping of wake-up signals (increase the number of information bits carried). When multiple narrowband wake-up signals are frequency division multiplexed, the frequency position can also carry information, which is beneficial to reducing the information carried by the narrowband wake-up signals, and further beneficial to reducing the sequence length (time domain resource overhead) of the narrowband wake-up signals.

[0009] In a second aspect, a communication method of the present application includes:

[0010] Listening for a wake-up signal at a frequency domain position or a time domain position, where the frequency domain position or the time domain position corresponds to a first terminal device identification part.

[0011] In a third aspect, a communication method of the present application includes:

[0012] Sending a wake-up signal on a subset of frequency domain positions or a subset of time domain positions, where the subset of frequency domain positions or the subset of time domain positions corresponds to a first terminal device identification part, the subset of frequency domain positions includes multiple frequency domain positions, and the subset of time domain positions includes multiple time domain positions.

[0013] It can be seen that since the subset of frequency domain positions or the subset of time domain positions can be corresponding to the first terminal device identification part, and different subsets of frequency domain positions or different subsets of time domain positions can correspond to different first terminal device identification parts, the network device can wake up terminal devices with different terminal device identifications at different subsets of frequency domain positions or different subsets of time domain positions. Correspondingly, terminal devices with different identifications can listen for their respective wake-up signals at different subsets of frequency domain positions or different subsets of time domain positions, so as to realize frequency division multiplexing of multiple wake-up signals. Frequency division multiplexing of multiple wake-up signals can increase the grouping of wake-up signals (increase the number of information bits carried). When multiple narrowband wake-up signals are frequency division multiplexed, the frequency position can also carry information, which is beneficial to reducing the information carried by the narrowband wake-up signals, and further beneficial to reducing the sequence length (time domain resource overhead) of the narrowband wake-up signals.

[0014] In a fourth aspect, a communication method of the present application includes:

[0015] Listen for a wake-up signal on a subset of frequency-domain positions or a subset of time-domain positions, where the subset of frequency-domain positions or the subset of time-domain positions corresponds to a first terminal device identification part, the subset of frequency-domain positions includes a plurality of frequency-domain positions, and the subset of time-domain positions includes a plurality of time-domain positions.

[0016] In a fifth aspect, a communication method according to the present application includes:

[0017] Send a wake-up signal on a first combination, where the first combination is a combination of a frequency-domain position and a time-domain position;

[0018] The frequency-domain position corresponds to a first terminal device identification part, and the time-domain position corresponds to a second terminal device identification part; or,

[0019] The first combination corresponds to a third terminal device identification part.

[0020] It can be seen that since the frequency-domain position can be associated with the first terminal device identification part and the time-domain position can be associated with the second terminal device identification part, the network device can wake up terminal devices with different first terminal device identification parts and different second terminal device identification parts at different frequency-domain positions and different time-domain positions; correspondingly, the terminal device can listen for wake-up signals at different frequency-domain positions and different time-domain positions. Or,

[0021] Since the first combination can be associated with the third terminal device identification part, the network device can wake up terminal devices with different third terminal device identifications on different first combinations; correspondingly, the terminal device can listen for wake-up signals on different first combinations.

[0022] In a sixth aspect, a communication method according to the present application includes:

[0023] Listen for a wake-up signal on a first combination, where the first combination is a combination of a frequency-domain position and a time-domain position;

[0024] The frequency-domain position corresponds to a first terminal device identification part, and the time-domain position corresponds to a second terminal device identification part; or,

[0025] The first combination corresponds to a third terminal device identification part.

[0026] In a seventh aspect, a communication method according to the present application includes:

[0027] Send a wake-up signal on a subset of a first combination, where the subset of the first combination includes a plurality of first combinations, the first combination corresponds to a third terminal device identification part, and the first combination is a combination of the frequency-domain position and the time-domain position.

[0028] It can be seen that since subsets of the first combination can be associated with the third terminal device identifier part, the network device can wake up terminal devices with different third terminal device identifier parts on different subsets of the first combination; correspondingly, the terminal device can listen for wake-up signals on different subsets of the first combination.

[0029] In an eighth aspect, a communication method of the present application includes:

[0030] Listening for a wake-up signal on a subset of the first combination, where the subset of the first combination includes multiple first combinations, the first combination corresponds to a third terminal device identifier part, and the first combination is a combination of the frequency domain position and the time domain position.

[0031] In a ninth aspect, a communication method of the present application includes:

[0032] Sending a preamble part, where the preamble part is before the wake-up signal corresponding to a terminal device group in one or more listening opportunities; or,

[0033] The preamble part is before the wake-up signal corresponding to a terminal device group in one or more frequency domain positions; or,

[0034] The preamble part is before the wake-up signal corresponding to a terminal device group in one or more time domain positions; or,

[0035] The preamble part is before the wake-up signal corresponding to a device group in one or more time-frequency domain positions.

[0036] It can be seen that since the wake-up signals of the terminal device groups divided by one or more listening opportunities / one or more time domain positions / one or more frequency domain positions share the same preamble part, this preamble part is equivalent to a "shared" preamble part. In this way, by sharing the preamble part, both the frequency deviation can be reduced and excessive preamble parts can be avoided to save signaling / resource overhead.

[0037] In a tenth aspect, a communication method of the present application includes:

[0038] Receiving a preamble part, where the preamble part is before the wake-up signal corresponding to a terminal device group in one or more listening opportunities; or,

[0039] The preamble part is before the wake-up signal corresponding to a terminal device group in one or more frequency domain positions; or,

[0040] The preamble part is before the wake-up signal corresponding to a terminal device group in one or more time domain positions; or,

[0041] The preamble part is before the wake-up signal corresponding to a device group in one or more time-frequency domain positions.

[0042] Eleventh aspect, a communication method of the present application includes:

[0043] Sending a synchronization signal at a frequency-domain position corresponding to a beam identifier; or,

[0044] Sending a synchronization signal on a subset of frequency-domain positions, where the subset of frequency-domain positions includes multiple frequency-domain positions; or,

[0045] Sending a synchronization signal at a time-domain position corresponding to a beam identifier; or,

[0046] Sending a synchronization signal on a subset of time-domain positions, where the subset of time-domain positions includes multiple time-domain positions; or,

[0047] Sending a synchronization signal on a second combination, where the second combination is a combination of a frequency-domain position and a time-domain position; or,

[0048] Sending a synchronization signal on a subset of the second combination, where the subset of the second combination includes multiple second combinations.

[0049] In this way, the network device can send different synchronization signals at different frequency-domain positions, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time-domain overhead of the beam direction.

[0050] Or, the network device can send different synchronization signals on different subsets of frequency-domain positions, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time-domain overhead of the beam direction.

[0051] Or, the network device can send different synchronization signals at different time-frequency positions, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0052] Or, the network device can send different synchronization signals on different subsets of time-frequency positions, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0053] Or, the network device can send different synchronization signals on different combinations of frequency-domain positions and time-domain positions, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0054] Alternatively, the network device may send different synchronization signals on different subsets of the second combination, where the different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0055] In a twelfth aspect, a communication method according to the present application includes:

[0056] Receiving a synchronization signal at a frequency domain position corresponding to a beam identifier; or,

[0057] Receiving a synchronization signal on a subset of frequency domain positions, where the subset of frequency domain positions includes multiple frequency domain positions; or,

[0058] Receiving a synchronization signal at a time domain position corresponding to a beam identifier; or,

[0059] Receiving a synchronization signal on a subset of time domain positions, where the subset of time domain positions includes multiple time domain positions; or,

[0060] Receiving a synchronization signal on a second combination, where the second combination is a combination of a frequency domain position and a time domain position; or,

[0061] Receiving a synchronization signal on a subset of the second combination, where the subset of the second combination includes multiple second combinations.

[0062] In this way, the terminal device can receive different synchronization signals at different frequency domain positions, where the different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead of the beam direction.

[0063] Alternatively, the terminal device can receive different synchronization signals on different subsets of frequency domain positions, where the different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead of the beam direction.

[0064] Alternatively, the terminal device can receive different synchronization signals at different time-frequency positions, where the different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0065] Alternatively, the terminal device can receive different synchronization signals on different subsets of time-frequency positions, where the different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0066] Alternatively, the terminal device may receive different synchronization signals at combinations of different frequency domain positions and time domain positions, where the different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0067] Alternatively, the terminal device may receive different synchronization signals on subsets of different second combinations, where the different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0068] In a thirteenth aspect, a communication device according to the present application includes:

[0069] a sending unit, configured to send a wake-up signal at a frequency domain position or a time domain position, where the frequency domain position or the time domain position corresponds to a first terminal device identification part.

[0070] In a fourteenth aspect, a communication device according to the present application includes:

[0071] a monitoring unit, configured to monitor a wake-up signal at a frequency domain position or a time domain position, where the frequency domain position or the time domain position corresponds to a first terminal device identification part.

[0072] In a fifteenth aspect, a communication device according to the present application includes:

[0073] a sending unit, configured to send a wake-up signal on a subset of a frequency domain position or a subset of a time domain position, where the subset of the frequency domain position or the subset of the time domain position corresponds to the first terminal device identification part, the subset of the frequency domain position includes multiple frequency domain positions, and the subset of the time domain position includes multiple time domain positions.

[0074] In a sixteenth aspect, a communication device according to the present application includes:

[0075] a monitoring unit, configured to monitor a wake-up signal on a subset of a frequency domain position or a subset of a time domain position, where the subset of the frequency domain position or the subset of the time domain position corresponds to the first terminal device identification part, the subset of the frequency domain position includes multiple frequency domain positions, and the subset of the time domain position includes multiple time domain positions.

[0076] In a seventeenth aspect, a communication device according to the present application includes:

[0077] a sending unit, configured to send a wake-up signal on a first combination, where the first combination is a combination of a frequency domain position and a time domain position;

[0078] the frequency domain position corresponds to a first terminal device identification part, and the time domain position corresponds to a second terminal device identification part; or,

[0079] The first combination corresponds to the third terminal device identification part.

[0080] In an eighteenth aspect, a communication device according to the present application includes:

[0081] A listening unit, configured to listen for a wake-up signal on a first combination, where the first combination is a combination of a frequency-domain position and a time-domain position;

[0082] The frequency-domain position corresponds to the first terminal device identification part, and the time-domain position corresponds to the second terminal device identification part; or,

[0083] The first combination corresponds to the third terminal device identification part.

[0084] In a nineteenth aspect, a communication device according to the present application includes:

[0085] A sending unit, configured to send a wake-up signal on a subset of the first combination, where the subset of the first combination includes a plurality of first combinations, the first combination corresponds to the third terminal device identification part, and the first combination is a combination of the frequency-domain position and the time-domain position.

[0086] In a twentieth aspect, a communication device according to the present application includes:

[0087] A listening unit, configured to listen for a wake-up signal on a subset of the first combination, where the subset of the first combination includes a plurality of first combinations, the first combination corresponds to the third terminal device identification part, and the first combination is a combination of the frequency-domain position and the time-domain position.

[0088] In a twenty-first aspect, a communication device according to the present application includes:

[0089] A sending unit, configured to send a preamble part, where the preamble part is before the wake-up signal corresponding to a terminal device group in one or more listening opportunities; or,

[0090] The preamble part is before the wake-up signal corresponding to a terminal device group in one or more frequency-domain positions; or,

[0091] The preamble part is before the wake-up signal corresponding to a terminal device group in one or more time-domain positions; or,

[0092] The preamble part is before the wake-up signal corresponding to a device group in one or more time-frequency domain positions.

[0093] In a twenty-second aspect, a communication device according to the present application includes:

[0094] A listening unit, configured to receive a preamble part, where the preamble part is before the wake-up signal corresponding to a terminal device group in one or more listening opportunities; or,

[0095] The leading part is before the wake-up signal corresponding to one or more frequency-domain position terminal device groups; or,

[0096] The leading part is before the wake-up signal corresponding to one or more time-domain position terminal device groups; or,

[0097] The leading part is before the wake-up signal corresponding to one or more time-frequency domain position device groups.

[0098] A twenty-third aspect is a communication device according to the present application, including:

[0099] A transmitting unit, configured to transmit a synchronization signal at a frequency-domain position corresponding to a beam identifier; or,

[0100] Transmit a synchronization signal on a subset of frequency-domain positions, where the subset of frequency-domain positions includes a plurality of frequency-domain positions; or,

[0101] Transmit a synchronization signal at a time-domain position corresponding to a beam identifier; or,

[0102] Transmit a synchronization signal on a subset of time-domain positions, where the subset of time-domain positions includes a plurality of time-domain positions; or,

[0103] Transmit a synchronization signal on a second combination, where the second combination is a combination of a frequency-domain position and a time-domain position; or,

[0104] Transmit a synchronization signal on a subset of the second combination, where the subset of the second combination includes a plurality of second combinations.

[0105] A twenty-fourth aspect is a communication device according to the present application, including:

[0106] A listening unit, configured to receive a synchronization signal at a frequency-domain position corresponding to a beam identifier; or,

[0107] Receive a synchronization signal on a subset of frequency-domain positions, where the subset of frequency-domain positions includes a plurality of frequency-domain positions; or,

[0108] Receive a synchronization signal at a time-domain position corresponding to a beam identifier; or,

[0109] Receive a synchronization signal on a subset of time-domain positions, where the subset of time-domain positions includes a plurality of time-domain positions; or,

[0110] Receive a synchronization signal on a second combination, where the second combination is a combination of a frequency-domain position and a time-domain position; or,

[0111] Receive a synchronization signal on a subset of the second combination, where the subset of the second combination includes a plurality of second combinations.

[0112] In the twenty-fifth aspect, the steps in the methods designed in the first, third, fifth, seventh, ninth, or eleventh aspect are applied to network devices.

[0113] In the twenty-sixth aspect, the steps in the methods designed in the second, fourth, sixth, eighth, tenth, or twelfth aspect are applied to terminal devices.

[0114] In the twenty-seventh aspect, a network device of the present application includes a processor, a memory, and a computer program or instruction stored on the memory. Among them, the processor executes the computer program or instruction to implement the steps in the methods designed in the first, third, fifth, seventh, ninth, or eleventh aspect.

[0115] In the twenty-eighth aspect, a terminal device of the present application includes a processor, a memory, and a computer program or instruction stored on the memory. Among them, the processor executes the computer program or instruction to implement the steps in the methods designed in the second, fourth, sixth, eighth, tenth, or twelfth aspect.

[0116] In the twenty-ninth aspect, a chip of the present application includes a processor and a communication interface. Among them, the processor executes the steps in the methods designed in any one of the second to twelfth aspects.

[0117] In the thirtieth aspect, a chip module of the present application includes a transceiver component and a chip. The chip includes a processor. Among them, the processor executes the steps in the methods designed in any one of the second to twelfth aspects.

[0118] In the thirty-first aspect, a computer-readable storage medium of the present application stores a computer program or instruction. When the computer program or instruction is executed, it implements the steps in the methods designed in any one of the second to twelfth aspects. For example, the computer program or instruction is executed by a processor.

[0119] In the thirty-second aspect, a computer program product of the present application includes a computer program or instruction. When the computer program or instruction is executed, it implements the steps in the methods designed in any one of the second to twelfth aspects. For example, the computer program or instruction is executed by a processor. Description of the Drawings

[0120] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art.

[0121] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present application;

[0122] Figures 2 to 6 is a schematic flowchart of a communication method according to an embodiment of the present application;

[0123] Figure 7 is a block diagram of the functional units of a communication device according to an embodiment of the present application;

[0124] Figure 8 is a block diagram of the functional units of another communication device according to an embodiment of the present application;

[0125] Figure 9 is a schematic diagram of the structure of a network device according to an embodiment of the present application;

[0126] Figure 10 is a schematic diagram of the structure of a terminal device according to an embodiment of the present application. Detailed implementation manners

[0127] It should be understood that the terms "first", "second", etc. involved in the embodiments of the present application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, software, product, or device that includes a series of steps or units is not limited to the listed steps or units, but also includes unlisted steps or units, or other steps or units inherent to these processes, methods, products, or devices.

[0128] The "embodiments" involved in the embodiments of the present application mean that the specific features, structures, or characteristics described in combination with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0129] The "and / or" in the embodiments of the present application describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone; A and B exist simultaneously; B exists alone. Among them, A and B can be singular or plural.

[0130] In the embodiments of the present application, the symbol " / " can represent that the associated objects before and after are an "or" relationship. In addition, the symbol " / " can also represent a division sign, that is, perform a division operation. For example, A / B can represent A divided by B.

[0131] The "at least one (piece)" or its similar expression in the embodiments of the present application refers to any combination of these items, including any combination of a single item (piece) or multiple items (pieces), which means one or more, and multiple means two or more. For example, at least one (piece) of a, b, or c can represent the following seven cases: a, b, c, a and b, a and c, b and c, a, b, and c. Each of a, b, and c can be an element or a set containing one or more elements.

[0132] "Equal to" in the embodiments of the present application can be used in combination with "greater than" and is applicable to the technical solutions adopted when it is greater than, or can also be used in combination with "less than" and is applicable to the technical solutions adopted when it is less than. When "equal to" is used in combination with "greater than", it is not used in combination with "less than"; when "equal to" is used in combination with "less than", it is not used in combination with "greater than".

[0133] In the embodiments of the present application, "(of)", "corresponding / relevant", "corresponding", and "indicated" can sometimes be used interchangeably. It should be noted that when their differences are not emphasized, the meanings they express are the same.

[0134] "Connection" in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection to achieve communication between devices, and no specific limitations are imposed on this.

[0135] "Network" in the embodiments of the present application can be expressed as the same concept as "system", and a communication system is a communication network.

[0136] The following explains the relevant content, concepts, meanings, technical problems, technical solutions, beneficial effects, etc. involved in the embodiments of the present application.

[0137] I. Communication System, Terminal Device, and Network Device

[0138] 1. Communication System

[0139] The present application can be applied to various communication systems to meet the requirements of different communication scenarios.

[0140] Optionally, this application can be applied to a Long Term Evolution (LTE) system, an Advanced Long Term Evolution (LTE-A) system, a New Radio (NR) system, an evolved system of the NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, an NR-based access to unlicensed spectrum (NR-U) system, a non-terrestrial networks (NTN) system, a Universal Mobile Telecommunication System (UMTS), a 6th-Generation (6G) communication system, etc.

[0141] Optionally, this application can be applied to communication scenarios such as a device to device (D2D) system, a machine to machine (M2M) system, a machine type communication (MTC), a vehicle to vehicle (V2V) system, a vehicle to everything (V2X) system, a narrow band internet of things (NB-IoT) system, and passive internet of things communication.

[0142] Optionally, this application can be applied to scenarios such as beamforming, carrier aggregation (CA), dual connectivity (DC), or standalone (SA) deployment scenarios.

[0143] Since the embodiments of this application describe each embodiment in combination with a terminal device and a network device, the terminal device and the network device involved will be specifically described below.

[0144] 2. Terminal Device

[0145] A terminal device can be a device with transceiver functions, and can also be referred to as a terminal, a passive device, an Internet of Things device, a user equipment (UE), a remote UE, a relay UE, an access terminal device, a user unit, a user station, a mobile station, a mobile device, a remote terminal device, a smart terminal device, a wireless communication device, a user agent, or a user device.

[0146] For example, the terminal device can be a mobile phone, a tablet (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in autonomous driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, or a wireless terminal device in smart home, etc.

[0147] Again, for example, the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication functions, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system (such as an NR communication system, a 6G communication system), or a terminal device in a future evolved public land mobile network (PLMN), etc., and no specific limitation is made thereto.

[0148] Optionally, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can be deployed on water (such as a ship, etc.); it can be deployed in the air (such as an airplane, a balloon, a satellite, etc.).

[0149] Optionally, the terminal device can include a device with wireless communication functions, such as a chip system, a chip, a chip module. By way of example, the chip system can include a chip and can also include other discrete devices.

[0150] Optionally, the terminal device may be a chip, a chip module, a device, a unit, etc., and no specific limitation is imposed thereon.

[0151] 3. Network device

[0152] The network device may be a device with transceiver functions and can be used for communication with the terminal device.

[0153] Optionally, the network device may be responsible for radio resource management (RRM) on the air interface side, quality of service (QoS) management, data compression and encryption, data transceiver, etc.

[0154] Optionally, the network device may include a base station (BS) in a communication system or a device deployed in a radio access network (RAN) for providing wireless communication functions, that is, the network device may include devices in the RAN.

[0155] For example, the devices in the RAN may include an evolved node B (eNB or eNodeB) in an LTE communication system, a next-generation evolved node B (ng-eNB) in an NR communication system, a next-generation node B (gNB) in an NR communication system, a master node (MN) in a dual-connectivity architecture, a second node or secondary node (SN) in a dual-connectivity architecture, etc., and no specific limitation is imposed thereon.

[0156] Optionally, the network device may include devices in a core network (CN).

[0157] For example, the devices in the CN may include an access and mobility management function (AMF), a user plane function (UPF), a session management function (SMF), etc.

[0158] Optionally, the network device may also be an access point (AP) in a WLAN, a relay station, a communication device in a future-evolved PLMN network, a communication device in an NTN network, etc.

[0159] Optionally, the network device may include a device that provides wireless communication functions for the terminal device, such as a chip system, a chip, or a chip module. For example, the chip system may include a chip, or may include other discrete devices.

[0160] Optionally, the network device may be a transmission and reception point (TRP).

[0161] Optionally, the network device may communicate with an Internet Protocol (IP) network. For example, the Internet, a private IP network, or other data networks, etc.

[0162] Optionally, the network device may include an independent node to implement the functions of the above base station, or may include two or more independent nodes to implement the functions of the above base station. For example, the network device includes a centralized unit (CU) and a distributed unit (DU), such as gNB-CU and gNB-DU. Further, in some other embodiments of the present application, the network device may further include an active antenna unit (AAU). Among them, the CU implements a part of the functions of the network device, and the DU implements another part of the functions of the network device. For example, the CU is responsible for processing non-real-time protocols and services, and implements the functions of the radio resource control (RRC) layer, the service data adaptation protocol (SDAP) layer, and the packet data convergence protocol (PDCP) layer. The DU is responsible for processing physical layer protocols and real-time services, and implements the functions of the radio link control (RLC) layer, the medium access control (MAC) layer, and the physical (PHY) layer. In addition, the AAU may implement some physical layer processing functions, radio frequency processing, and functions related to active antennas. Since the information of the RRC layer will ultimately become the information of the PHY layer, or is transformed from the information of the PHY layer, therefore, in this network deployment, high-layer signaling (such as RRC signaling) can be considered to be generated by the CU and sent by the DU, or sent by the DU and the AAU together. It can be understood that the network device may include at least one of the CU, DU, and AAU. In addition, the CU may be classified as a RAN device, or the CU may also be classified as a core network device, and no specific limitation is made thereto.

[0163] Optionally, the network device may be any site in a multi-site that performs coherent joint transmission (CJT) with the terminal device, or other sites outside the multi-site, or other network devices that communicate with the terminal device over the network, without specific limitation thereto. Among them, multi-site coherent joint transmission may be joint coherent transmission by multiple sites, or different data belonging to the same physical downlink shared channel (PDSCH) are sent from different sites to the terminal device, or multiple sites are virtualized into one site for transmission. Names with the same meaning specified in other standards are also applicable to this application, that is, this application does not limit the names of these parameters. The sites in multi-site coherent joint transmission may be remote radio heads (RRHs), transmission and reception points (TRPs), etc., without specific limitation thereto.

[0164] Optionally, the network device may be any site in a multi-site that performs non-coherent joint transmission with the terminal device, or other sites outside the multi-site, or other network devices that communicate with the terminal device over the network, without specific limitation thereto. Among them, multi-site non-coherent joint transmission may be joint non-coherent transmission by multiple sites, or different data belonging to the same PDSCH are sent from different sites to the terminal device. Names with the same meaning specified in other standards are also applicable to this application, that is, this application does not limit the names of these parameters. The sites in multi-site non-coherent joint transmission may be RRHs, TRPs, etc., without specific limitation thereto. The transmission scheme of multiple TRPs may include the S-DCI based M-TRP transmission scheme or the M-DCI based M-TRP transmission scheme.

[0165] It should be noted that the TRP in this application is not limited to the coherent joint transmission or non-coherent joint transmission scenarios, and may also be applicable to other scenarios, without specific limitation thereto.

[0166] Optionally, the network device may have mobility characteristics. For example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station located on land, water, etc.

[0167] Optionally, a network device may provide services to a cell, and a terminal device in the cell may communicate with the network device through transmission resources (such as spectrum resources). Among them, the cell may be a macro cell, a small cell, a metro cell, a micro cell, a pico cell, a femto cell, etc.

[0168] Optionally, the network device in the embodiment of the present application may be a chip, a chip module, a device, a unit, etc., and no specific limitation is made thereto.

[0169] 4. Example Explanation

[0170] An exemplary explanation of the communication system in the embodiment of the present application is given below.

[0171] Exemplarily, the network architecture of a communication system in the embodiment of the present application may refer to Figure 1 . As Figure 1 shown, the communication system 10 may include a network device 110 and a terminal device 120.

[0172] It should be noted that Figure 1 this is only an example of the network architecture of a communication system, and does not limit the network architecture of the communication system in the embodiment of the present application.

[0173] For example, the communication system 10 may further include a server or other devices.

[0174] For another example, in addition to the network device 110, the communication system 10 may further include other network devices.

[0175] For another example, in addition to the terminal device 120, the communication system 10 may further include other terminal devices.

[0176] II. Reception Process of the Main Radio

[0177] It should be noted that the main radio, which may also be referred to as a main transceiver, an overall transceiver, a regular transceiver, etc., has a complete radio frequency and baseband processing architecture. The main radio may be regarded as a module for receiving and transmitting signals / channels except for low-power wake-up signals.

[0178] During the reception of the primary radio, the primary radio may need to perform operations such as monitoring the physical downlink control channel (PDCCH), radio resource management (RRM) measurement, SS / PBCH block burst (SSB burst) processing, and paging early indication (PEI) detection. However, the power consumption of the primary radio is usually very high. For example, these power consumptions include the conversion power consumption when the terminal device wakes up from deep sleep, the power consumption for monitoring paging, the power consumption for performing RRM measurement, the power consumption for detecting PEI, etc.

[0179]

Paging-related PDCCH

[0180] Generally, in the radio resource control idle state (RRC_IDLE state) or the radio resource control inactive state (RRC_INACTIVE state), the terminal device needs to monitor the paging-related PDCCH, also known as Type 2-PDCCH. The radio network tempory identity (RNTI) of the paging-related PDCCH is P-RNTI, and the downlink control information (DCI) format used is DCI format 1-0.

[0181] When the terminal device detects the paging-related PDCCH (after successfully scrambling the CRC with P-RNTI), the terminal device can then parse the DCI. The DCI may contain a short message, enabling the terminal device to obtain an alert message or perform a system information update. Additionally, the DCI may also contain scheduling information, enabling the terminal device to receive the paging-related physical downlink share channel (PDSCH), thereby obtaining the paging message and further initiating a random access process to enter the connected state (RRC_CONNECTED state).

[0182] Among them, the role of the paging message is as follows:

[0183] (1) Send a call request to the terminal device in the RRC_IDLE state;

[0184] (2) Notify the terminal device in the RRC_IDLE state, RRC_INACTIVE state, or RRC_CONNECTED state that the system information has changed;

[0185] (3) Indicate that the terminal device starts to receive the main (primary) notification and / or secondary (secondary) notification of the earthquake and tsunami warning system (ETWS); indicate that the terminal device starts to receive the commercial mobile alert system (CMAS) notification.

[0186] In addition, before the terminal device obtains the paging message, the terminal device needs to complete time-frequency synchronization using a reference signal (e.g., SSB), and complete the adjustment of automatic gain control (AGC).

[0187] The monitoring opportunity of the paging-related PDCCH can be configured by the search space set (SSS).

[0188] The terminal device in the RRC_IDLE state or RRC_INACTIVE state can use the discontinuous reception (DRX) mechanism to receive the paging message to reduce power consumption. A DRX cycle can contain at least one paging frame (PF).

[0189] Among them, a PF can be a radio frame or a system frame, which can contain one or more paging occasions (PO) or a PO starting point.

[0190] Among them, the PO can be used to determine the starting point of the monitoring opportunity within the PF, can represent the time domain position of the paging-related PDCCH, can be used to transmit the paging downlink control information (paging DCI), can be composed of multiple subframes, multiple time slots or multiple OFDM symbols, and can be composed of multiple monitoring opportunities of the paging-related PDCCH. The monitoring opportunity of the paging-related PDCCH can also be called the paging PDCCH monitoring occasion (PMO). Therefore, a PO can contain multiple PMOs, or in other words, a PO is composed of a group of PMOs.

[0191] Among them, PMO is a plurality of sequential listening opportunities starting from the starting point, and PMO is associated with the actually transmitted SSB one-to-one.

[0192] Among them, the terminal device can determine the position of the PF or PO to which it belongs according to its own device identifier (UE_ID).

[0193] It should be noted that in the PO in the embodiments of the present application, it can be understood as a paging opportunity, or it can be understood as a terminal subgroup (UE subgroup) corresponding to the PO or a terminal group (UE group) corresponding to the PO. Among them, the terminal subgroup (terminal group) corresponding to the PO can be understood as a set composed of terminals corresponding to / mapped / associated with the same PO. Among them, a PO can correspond to a terminal subgroup (terminal group), and no specific limitation is made on this.

[0194]

RRM Measurement

[0195] In the RRC_IDLE state or the RRC_INACTIVE state, the terminal device needs to perform periodic RRM measurements. Among them, the RRM measurements can include serving cell measurements and neighboring cell measurements.

[0196] The neighboring cell measurements can include:

[0197] The network device gives a frequency point, and the terminal device can perform cell search and measurement on this frequency point; or,

[0198] The network device gives a frequency point and a physical cell ID (PCI), and the terminal device can use this PCI to perform cell search and measurement on this frequency point; or,

[0199] The network device does not give a frequency point nor a PCI, and the terminal device can perform cell search and measurement independently.

[0200] The neighboring cell measurements can be further divided into intra-frequency measurements and inter-frequency measurements.

[0201] For example, if the center frequency point and subcarrier spacing of the SSB in the measurement object of the neighboring cell are the same as those of the SSB of the serving cell, then this measurement is an intra-frequency measurement.

[0202] For example, if the center frequency point or subcarrier spacing of the SSB in the measurement object of the neighboring cell is different from those of the SSB of the serving cell, then this measurement is an inter-frequency measurement.

[0203] In the RRC_IDLE state or the RRC_INACTIVE state, the terminal device generally needs to perform RRM measurements on the serving cell within one paging cycle. The paging cycle is also known as the DRX cycle, or the idle state - DRX (I-DRX) cycle.

[0204] In summary, in the RRC_IDLE state or the RRC_INACTIVE state, listening for paging-related PDCCH and performing RRM measurements are the main tasks of the terminal device.

[0205]

Paging Early Indication Information (PEI)

[0206] To implement listening for paging-related PDCCH and performing RRM measurements, generally, the network device needs to page the terminal device in advance to wake it up from deep sleep to process 3 Synchronization Signal / Physical Broadcast Channel block bursts (SS / PBCH block bursts, SSB bursts) to achieve a certain time-frequency synchronization to listen for paging-related PDCCH and perform RRM measurements simultaneously.

[0207] During the process of listening for paging-related PDCCH, in order to avoid unnecessary listening to save the power consumption of the terminal device, in the RRC_IDLE state or the RRC_INACTIVE state, the network device can configure PEI, which can be used to indicate whether the terminal device needs to continue listening for paging-related PDCCH to achieve the purpose of saving power. Among them, PEI can be downlink control information or a sequence, etc.

[0208] When PEI is configured, the terminal device can wake up from deep sleep to process 1 SSB burst to achieve a certain time-frequency synchronization to detect PEI.

[0209] If the PEI indicates the listening opportunity for continuing to listen for paging-related PDCCH, the terminal device continues to process the remaining 2 SSB bursts and continues to listen for paging-related PDCCH.

[0210] If the PEI indicates that there is no need to continue listening for the listening opportunity of paging-related PDCCH, the terminal device returns to deep sleep.

[0211] When the group paging rate is 10%, the probability that the terminal device needs to monitor the PDCCH related to paging is 10%. Therefore, with a 10% probability, the terminal device needs to process 3 SSB bursts, monitor the PDCCH related to paging, and perform RRM measurements. With a 90% probability, the terminal device only needs to process 1 SSB burst and perform RRM measurements. Therefore, with a 90% probability, the terminal device processes fewer signals / channels, has a shorter wake-up time (if no signals / channels are processed after waking up from deep sleep, it is in light sleep), and consumes less power.

[0212] In summary, by using PEI, the terminal device can achieve the purpose of power saving.

[0213] III. Low-power wake-up signal, low-power wake-up signal receiver, timing error, and synchronization signal

[0214]

Low-power wake-up signal

[0215] The network device can wake up the terminal device from a deep sleep state, such as the power saving mode (PSM), by sending a low-power wake-up signal.

[0216] Correspondingly, the terminal device determines whether it needs to exit the deep sleep state to enter the RRC_IDLE state, RRC_INACTIVE state, or RRC_CONNECTED state by listening / detecting the low-power wake-up signal. In this way, the terminal device can enter the deep sleep state and can be woken up by the network through the low-power wake-up signal.

[0217] For simplicity of description, the "low-power wake-up signal" in this application can be abbreviated as "wake-up signal (WUS)". That is to say, the "low-power wake-up signal" mentioned in this application can be uniformly abbreviated as the "wake-up signal".

[0218]

Low-power wake-up signal receiver

[0219] To reduce the conversion power consumption of the main radio when waking up from deep sleep and the power consumption of detecting signals, etc., an independent low-power wake-up signal receiver from the main radio can be used to detect a low-power wake-up signal.

[0220] The design of the low-power wake-up signal should not only ensure that the receiver can receive signals with low power consumption, but also meet the sensitivity requirements, or the signal-to-noise ratio requirements at a lower error rate. Compared with non-low-power wake-up signals, low-power wake-up signals enable the low-power wake-up signal receiver to receive wake-up signals with lower power consumption at the same delay, or to receive wake-up signals with lower delay at the same power consumption.

[0221] It should be noted that the low-power wake-up signal receiver can be regarded as a module / unit / device, etc., mainly used to receive signals / channels related to the low-power wake-up signal, and is often independent of the main radio.

[0222] The low-power wake-up signal receiver can also be called a low-power receiver (low power recevier), a wake-up signal receiver (wakeup signal receiver, WUS receiver), etc.

[0223] In some scenarios or moments, the terminal device can only turn on the low-power wake-up signal receiver independent of the main radio. In this way, the terminal device can not only turn off the main radio to achieve energy saving (reduce power consumption), but also use the low-power wake-up signal receiver to monitor the low-power wake-up signal to wait to be awakened by the network, achieving the purpose of being network reachable. In this way, through the main radio and the low-power wake-up signal receiver, the purposes of energy saving and network reachability are taken into account at the same time.

[0224] In addition, in some scenarios or moments, the low-power wake-up signal receiver can monitor the low-power wake-up signal at a relatively high frequency, so that the terminal device can be awakened with a lower delay. Therefore, the low-power wake-up signal receiver also potentially has the benefit of reducing delay.

[0225] For the sake of simplicity of description, the low-power wake-up signal receiver in this application can be abbreviated as a low-power receiver (lowpower receiver, LPR). That is to say, the "low-power wake-up signal receiver" mentioned in this application can be uniformly abbreviated as the "low-power receiver" or the "wake-up signal receiver". The following will be described with the low-power receiver.

[0226]

Generation of On-Off Keying (OOK) Symbols for Wake-Up Signals

[0227] In order to reduce the complexity of the low-power receiver, the wake-up signal can adopt the on-off keying (OOK) modulation method.

[0228] This is because OOK modulation only has amplitude information, without frequency or phase information, and there are only two amplitudes, high (or 1) and low (or 0). For OOK, the receiving method can be envelope detection, which can directly accumulate the amplitude of the received signal. Due to its simplicity, the power consumption required is also low. In this way, the low-power receiver in the terminal device can be simplified to detect the energy of the modulation symbol (instead of the amplitude / phase of the modulation symbol). As long as the energy of the modulation symbol is detected to exceed a certain threshold, it can be determined as on, otherwise it is determined as off.

[0229] Since OOK symbols only have two amplitudes, high (or 1) and low (or 0), OOK symbols can also be called OOK bits, OOK chips, or OOK pulses. This application does not distinguish these terms and only uses OOK symbols instead.

[0230] For OOK under a multi-tone waveform or a multi-carrier waveform, an OOK symbol can be a time-domain symbol of a multi-tone or a multi-carrier, such as the time-domain symbol of orthogonal frequency division multiplexing (OFDM).

[0231] For OOK under a multi-tone or multi-carrier waveform, at the transmitting end (such as a network device), an OOK symbol can be mapped to multiple sub-carriers, and these multiple sub-carriers can jointly form all the sub-carriers in an OFDM symbol with the sub-carriers of other signals / channels. In this way, the low-power wake-up signal can coexist with other signal channels in the same OFDM symbol. In addition, the multiple sub-carriers mapped by an OOK symbol can be random or preset.

[0232] Multiple OOK symbols can be mapped to an OFDM symbol, and the mapping method can be one of the following two:

[0233] ◆ The method of direct sequence modulation

[0234] For an OOK symbol with a high (or 1) amplitude, sequence 1 (such as the Zidoff-Chu sequence, abbreviated as the ZC sequence) is used to map to a subset of sub-carriers (a subset of all sub-carriers corresponding to the OFDM symbol). For an OOK symbol with a low (or 0) amplitude, sequence 0 (such as a sequence of all zeros) is used to map to a subset of sub-carriers.

[0235] In this way, for a wake-up signal, an OFDM symbol can contain an OOK symbol. It is worth noting that at this time, a subset of subcarriers mapped by the OOK symbol can be selected to use a higher subcarrier spacing, so that there is an OOK symbol in the OFDM symbols used by one data. At this time, the OOK waveform / modulation can be called "OOK-1 waveform / modulation".

[0236] In addition, in order to have multiple OOK symbols in one OFDM symbol, multiple OOK symbols can also be mapped to multiple subsets of subcarriers, so that multiple OOK symbols can be included in the current OFDM symbol. In this regard, a subset of subcarriers can be called a segment, that is to say, multiple OOK symbols are mapped to multiple segments. At this time, the OOK waveform / modulation can be called "OOK-2 waveform / modulation".

[0237] ◆ Based on the precoding method, or the method based on waveform shaping

[0238] All the OOK symbols corresponding to one OFDM symbol are processed one by one. Each OOK symbol corresponds to a sequence (which can be adopted or repeated), and this sequence is mapped to a subset of symbols of the precoding input. After precoding (such as DFT precoding, pseudo-inverse based precoding), waveform shaping is performed, such as frequency domain truncation, and then the output is mapped to the subcarriers of OFDM.

[0239] The number of OOK symbols corresponding to one OFDM symbol is an important parameter. Generally speaking, one OFDM symbol can correspond to M OOK symbols, where M>1, and M can be selected as values such as 8 or 4. At this time, the OOK waveform / modulation can be called "OOK-4 waveform / modulation".

[0240]

Preamble part of the wake-up signal

[0241] For the reception of the wake-up signal, the low-power receiver needs to first handle the problem of timing deviation. Generally speaking, a preamble part (or the first part) can be placed at the beginning of the wake-up signal.

[0242] In this way, the low-power receiver can detect the preamble part by means of a search window. When the preamble part is detected, the low-power receiver can determine the start position of the message part of the wake-up signal. Among them, the process of determining the start position of the preamble part can also be regarded as the process of obtaining timing information (correcting timing deviation).

[0243] Optionally, the preamble part can be regarded as a reference signal (RS), a reference signal of a wake-up signal, or a reference signal of a message part.

[0244]

Message Part of Wake-up Signal

[0245] The message part of the wake-up signal can refer to the part after the preamble part of the wake-up signal, and this message part can be called the data part or the second part.

[0246] Optionally, this message part can carry some information, such as cell identity (cell ID) information and / or UE identity (UE ID). In this way, the low-power receiver can determine the current cell according to this cell identity information, so as to reduce inter-cell interference.

[0247] Optionally, the wake-up signal can also have no preamble part, that is to say, the wake-up signal only has a message part. At this time, the message part of the wake-up signal is equivalent to the wake-up signal.

[0248]

Ways for Wake-up Signal to Carry Information

[0249] The wake-up signal can carry information.

[0250] Optionally, the wake-up signal can carry information in the way of a channel (or coded bits), including steps such as repetition (upsampling), channel coding (such as Manchester coding), adding cyclic redundant check (CRC), modulation, and / or waveform generation.

[0251] Optionally, the wake-up signal can carry information in the way of a signal (or sequence), including steps such as sequence generation, modulation, and / or waveform generation.

[0252] In the way of using a channel, the wake-up signal can carry more information (such as more bits can be carried due to repetition or upsampling). In this way, the probability of the low-power receiver waking up the main radio is lower, and the main radio can stay in the sleep state for a longer time, thus reducing the power consumption of the terminal device.

[0253] Compared with the way of using a sequence, although the way of using a channel makes the number of carried bits more, under the same system overhead, it will also lead to disadvantages such as poor coverage and large system overhead.

[0254] In addition, in the channel-based approach, the low-power receiver can only use envelope detection to detect the wake-up signal, and cannot use sequence detection to detect the wake-up signal. This is because if the low-power receiver regards the entire wake-up signal as a sequence (which may include CRC) and uses sequence detection to detect the low-power wake-up signal, there will be too many sequence possibilities, resulting in a too high detection complexity.

[0255] Since the performance of envelope detection may be poor, the system overhead of the wake-up signal may be large in order to achieve the coverage target. At the same time, in the channel-based approach, since CRC needs to be added, this also increases the system overhead of the wake-up signal. However, in some scenarios, the channel-based approach can still be used, such as in a factory building, where the coverage can be small and the system overhead is not as important as the power consumption of the terminal device at this time.

[0256] It can be seen that when using the channel-based approach, it is necessary to focus on how to improve the coverage.

[0257] Based on this, in order to improve the coverage, the present application can adopt coding and / or repetition methods, and can adopt the method of coding first and then repeating to combine coding and repetition.

[0258] At the same time, in order to introduce flexibility, for different scenarios and / or terminal devices, the network device can configure the code length of the coding of different wake-up signals. Among them, the longer the code length of the coding, the higher the complexity of the low-power receiver, manifested as more soft bits need to be buffered; the shorter the code length of the coding, the lower the complexity of the low-power receiver, manifested as fewer soft bits need to be buffered.

[0259] In order to introduce flexibility, for different scenarios and / or terminal devices, the network device can configure different repetition times. Among them, the larger the repetition times, the higher the complexity of the low-power receiver, manifested as more times of combining soft bits; the smaller the repetition times, the lower the complexity of the low-power receiver, manifested as fewer times of combining soft bits.

[0260] In order to introduce flexibility, for different scenarios and / or terminal devices, the network device can configure the length of different wake-up signals. Among them, the larger the length, the higher the complexity of the low-power receiver, manifested as more soft bits need to be buffered; the smaller the length, the lower the complexity of the low-power receiver, manifested as fewer times of combining soft bits.

[0261]

Detection Method of Low-Power Receiver

[0262] The low-power receiver can detect the wake-up signal by envelope detection, such as detecting each OOK symbol one by one. This method has relatively low performance, low complexity, and low power consumption of the receiver.

[0263] The low-power receiver can also detect the wake-up signal by sequence detection, such as detecting the OOK sequence by correlating the received sequence with the local sequence. This method has relatively high performance, high complexity, and high power consumption of the receiver.

[0264]

Detection Timing of Low-Power Receiver

[0265] It should be noted that the low-power receiver can have the following two types of detection timing:

[0266] ◆The First Type of Detection Timing

[0267] The first type of detection timing can be that the low-power receiver periodically detects the low-power wake-up signal.

[0268] In this method, the power consumption of detecting the low-power wake-up signal once is relatively large, but due to the long period (the low-power receiver only needs to wake up once every long period for detection), the average power consumption is relatively low. Also, since it needs to wake up periodically for detection, the low-power receiver requires accurate time synchronization. Among them, this period can be called the duty cycle or detection cycle (detection periodicity).

[0269] ◆The Second Type of Detection Timing

[0270] The second type of detection timing can be that the low-power receiver can always be in the state of detecting the low-power wake-up signal (also known as the standby state).

[0271] In this method, the power consumption of detecting the wake-up signal once is relatively low, and although it is always detecting, the average power consumption is also relatively low. Since it is always detecting, the low-power receiver does not require accurate time synchronization.

[0272]

Architecture of Low-Power Receiver

[0273] For OOK modulation, the low-power receiver can adopt the architecture of envelope detection. Among them, the architecture of envelope detection can include the following various types:

[0274] The first architecture is the envelope detection architecture based on zero IF, and this envelope detection can be completed in the baseband.

[0275] The second architecture is an envelope detection architecture based on low intermediate frequency (low IF), and this envelope detection can be completed in the intermediate frequency.

[0276] The third architecture is an envelope detection architecture based on radio frequency, and this envelope detection can be completed in the radio frequency.

[0277] The fourth architecture is a receiver architecture for OFDM waveforms. This architecture has two I / Q paths and can at least detect sequences based on OFDM waveforms. Since the OOK waveform is an OOK waveform under multi-tone or multi-carrier waveforms, the receiver architecture for OFDM waveforms can also detect the OOK waveform. Due to the relatively high complexity of the receiver architecture for OFDM waveforms, such as two I / Q paths and a high sampling rate, the power consumption of the receiver architecture for OFDM waveforms is slightly higher.

[0278] The above-mentioned multiple architectures can all implement the two types of detection opportunities in the "detection opportunities of the low-power receiver" mentioned above.

[0279]

Time-frequency deviation and synchronization signal of the low-power receiver

[0280] Frequency drift will be reflected as frequency deviation, resulting in a deviation in frequency for the low-power receiver, which can be simply referred to as frequency offset.

[0281] Optionally, the magnitude of the frequency deviation can be a partial sub-carrier spacing, one sub-carrier spacing, or multiple sub-carrier spacings.

[0282] Frequency deviation will generate inter-subcarrier interference (ICI) of the OFDM sequence. For the receiver architecture for OFDM waveforms, when detecting the OFDM sequence to detect the OOK waveform under multi-tone or multi-carrier waveforms, the performance will degrade. Frequency deviation will also generate inter-frequency segment interference. If the OOK waveform has multiple frequency segments, the performance will degrade when detecting the OOK waveform. Frequency deviation will also generate adjacent channel interference. If the OOK waveform coexists with other signals / channels, the performance will degrade when detecting the OOK waveform.

[0283] Frequency drift will accumulate into timing deviation over a period of time, resulting in a deviation in timing for the low-power receiver, which can be simply referred to as timing offset.

[0284] Optionally, the magnitude of the timing deviation can be a partial OOK symbol, one OOK symbol, or multiple OOK symbols.

[0285] It should be noted that frequency deviation and timing deviation can be collectively referred to as time-frequency deviation. For the first type of detection opportunity (the low-power receiver periodically detects the wake-up signal), when the detection period is too large, the accumulated timing deviation will be too large. When the timing deviation exceeds a certain degree (such as exceeding a certain number of OOK symbols), the demodulation and decoding performance of the low-power receiver may drop sharply, manifested as a large miss detection rate (MDR) and / or false alarm rate (FAR).

[0286] For the second type of detection opportunity (the low-power receiver is always in the state of detecting the wake-up signal), when the network device does not send the low-power wake-up signal for a long time, this makes the accumulated timing deviation too large. When the timing deviation exceeds a certain degree (such as exceeding a certain number of OOK symbols), the time interval between the network device sending the low-power wake-up signal and the low-power receiver detecting the low-power wake-up signal will be too large, resulting in too much delay.

[0287] Based on this, the low-power receiver can be synchronized through a period of synchronization signal to reduce the frequency deviation and / or timing deviation.

[0288] Optionally, the synchronization signal can use OOK modulation.

[0289] Optionally, the synchronization signal can not use OOK modulation and is sent in the form of a frequency-domain sequence (referred to as OFDM modulation or waveform). Since the frequency-domain sequence is manifested as a filtered time-domain sequence in the time domain, the receiver can use the time-domain correlation method (that is, the received time-domain signal is correlated with the local sequence or a time-domain version of a part of the sequence).

[0290] It should be noted that the time-domain correlation method is equivalent to the frequency-domain dot product method (that is, the received frequency-domain signal is dotted with the local sequence or a frequency-domain version of a part of the sequence). When the synchronization signal uses OOK modulation, the synchronization signal can be different from the wake-up signal and is a preset OOK symbol sequence; the synchronization signal can also be the same as the wake-up signal and is modulated into OOK symbols after bit-by-bit encoding. When the synchronization signal is bit-encoded and then modulated, it can include a preamble part and a message part like the wake-up signal.

[0291]

Preamble Part of the Synchronization Signal

[0292] For the reception of the synchronization signal, the low-power receiver also needs to first handle the problem of timing deviation. Generally speaking, a preamble part can be placed at the beginning of the synchronization signal.

[0293] In this way, the low-power receiver can detect the preamble part by means of a search window. When the preamble part is detected, the start position of the message part (the part after the preamble part) can be determined. Among them, the process of determining the start position of the preamble part can also be regarded as the process of obtaining timing information (correcting timing deviation).

[0294]

Message Part of Synchronization Signal

[0295] The message part of the synchronization signal can carry some information, such as cell ID information. Among them, the cell ID information can enable the low-power receiver to determine the current cell to reduce inter-cell interference.

[0296] Since the message part of the synchronization signal is relatively fixed and the number of possible sequences of the synchronization signal is small, the low-power receiver can still detect the synchronization signal as a sequence. In short, whether the synchronization signal is a preset OOK symbol sequence or modulated into an OOK symbol after bit-by-bit encoding, the low-power receiver can perform sequence detection.

[0297]

Ways of Synchronization Signal Carrying Information

[0298] The synchronization signal can also carry information.

[0299] Optionally, the synchronization signal can carry information in the way of a channel (or encoded bits), including steps such as repetition, channel coding (such as Manchester coding), adding cyclic redundant check (CRC), modulation, and / or waveform generation.

[0300] Optionally, the synchronization signal can carry information in the way of a signal (or sequence), including steps such as sequence generation, modulation, and / or waveform generation.

[0301] It should be noted that the "repetition of the synchronization signal" in this application can be understood as repeating or upsampling the information carried by the synchronization signal or the synchronization signal itself (including the preamble part, the message part, and / or CRC information, etc.) to improve the decoding performance of the synchronization signal and improve the coverage.

[0302] For example, when the information carried by the synchronization signal includes 4 bits, these 4 bits can be repeated or upsampled. This repetition or upsampling can be to repeat the 4 bits 4 times (that is, the repetition times of the wake-up signal is 4 times), and finally 16 bits are obtained.

[0303] For another example, when the synchronization signal itself includes 32 bits (for example, the preamble part occupies 8 bits, the message part occupies 16 bits, and the CRC occupies 8 bits), the 24 bits can be repeated or upsampled. The repetition or upsampling can be to repeat the 32 bits 4 times (that is, the repetition times of the synchronization signal is 4 times), and finally 128 bits are obtained.

[0304] Optionally, the information carried by the synchronization signal can be the information bits or sequences before encoding, or the encoded information or bits, and no specific restrictions are imposed on this.

[0305] IV. A communication method

[0306] 1. Description

[0307] Combined with the content in the above "On - Off Keying (OOK) symbol generation for wake - up signal", the OOK - 1 waveform / modulation has the advantages of being transmitter - friendly, resistant to Inter - Symbol Interference (ISI), resistant to interference caused by frequency offset, etc.; the OOK - 4 waveform / modulation has the advantages of being convenient to combine with Manchester code (M can represent the length of Manchester code), power boosting under Manchester code, supporting long Manchester code, resistant to interference caused by frequency offset, etc.

[0308] In the case of OOK - 4 waveform / modulation, when M is large, the duration of an OOK symbol is short. In a fading channel, the inter - symbol interference is large, and at this time, M should be kept small. When M is small (such as M = 2), the OOK - 4 waveform / modulation is very similar to the OOK - 1 waveform / modulation, except that there are 2 OOK symbols in one OFDM symbol in the OOK - 4 waveform / modulation, and there is 1 OOK symbol in one OFDM symbol in the OOK - 1 waveform / modulation. When using Manchester code, in the OOK - 4 waveform / modulation, one OFDM symbol contains a codeword (2 bits) of Manchester code; while in the OOK - 1 waveform / modulation, one codeword (2 bits) of Manchester code is contained in 2 OFDM symbols. It should be noted that the OOK - 1 waveform / modulation is equivalent to the OOK - 4 waveform / modulation when M = 1.

[0309] In summary, both the OOK - 1 waveform / modulation and the OOK - 4 waveform / modulation with a small M are more suitable for wake - up signals and are quite similar.

[0310] Since there is only 1 OOK symbol in one OFDM symbol under OOK-1 waveform / modulation, and there are only a few (e.g., M = 2) OOK symbols in one OFDM symbol under OOK-4 waveform / modulation when M is small, this makes the system overhead very small, and the bandwidth of the corresponding wake-up signal is also small. At this time, the present application can refer to such a wake-up signal as a "narrowband wake-up signal".

[0311] For narrowband wake-up signals, multiple narrowband wake-up signals can be frequency-division multiplexed to make the best use of the broadband bandwidth and improve resource utilization. At the same time, when multiple narrowband wake-up signals are frequency-division multiplexed, the frequency positions can also carry information, which is conducive to reducing the information carried by the narrowband wake-up signals, and further conducive to reducing the sequence length (time-domain resource overhead) of the narrowband wake-up signals.

[0312] In summary, for narrowband wake-up signals, multiple narrowband wake-up signals should support frequency-division multiplexing. 2. Specific implementation manners

[0314]

Solution 1

[0315] In "Solution 1", this embodiment needs to mention the "monitoring occasion UE group". Among them, the monitoring occasion UE group can use some existing UE grouping methods, that is, associating time-domain positions and / or frequency-domain positions with the existing grouping to simplify the design.

[0316] Optionally, a monitoring occasion UE group can be a group of UEs with the same paging occasion (PO) or paging PDCCH monitoring occasion (PMO). The UEs that monitor paging or paging PDCCH at this monitoring occasion belong to the same monitoring occasion UE group. At this time, the monitoring occasion UE group can also be called a paging occasion UE group (PO UE group), a UE group, or a paging occasion group (PO group). A paging occasion can be composed of a group of monitoring occasions of paging-related PDCCHs.

[0317] Optionally, a set of terminal devices with a listening occasion can be a group of terminal devices that have the same paging early indication occasion (PEI-O) or paging PDCCH monitoring occasion (PEI-MO). Terminal devices that monitor PEI or PEI PDCCH on this listening occasion belong to the same set of terminal devices with a listening occasion. At this time, the set of terminal devices with a listening occasion can also be referred to as a PEI-O UE group. A PEI-O can be composed of a set of PEI-MOs.

[0318] Optionally, a set of terminal devices with a listening occasion can be a subgroup of terminal devices in a paging early indication (PEI). The PEI can indicate a subgroup of the PO UE group, that is, the PO UE group can be further divided, for example, in the form of a bitmap, where 1 bit corresponds to one subgroup.

[0319] Next, embodiments of the present application will illustrate related research under frequency division multiplexing of wake-up signals supporting multiple narrowbands from multiple implementation manners. Among them, any combination can be made between the various implementation manners to form a new implementation manner, and this new implementation manner is also within the scope of protection required by the present application. At the same time, the same content in one manner and other manners can be referenced to each other, and this will not be elaborated here.

[0320]

Method 1-1

[0321] In "Method 1-1", the present application needs to study the time-frequency resource location of the wake-up signal of the narrowband under frequency division multiplexing of wake-up signals supporting multiple narrowbands.

[0322] Since the wake-up signal is periodically monitored, the listening occasion of the wake-up signal (equivalent to the time position index) carries partial information of the terminal device identifier (such as UE ID), and the terminal device identifier can be used to indicate / distinguish / identify the terminal device. Therefore, in "Method 1-1", the present application can consider frequency division multiplexing of wake-up signals of multiple narrowbands, and the frequency position index or time domain position index carries partial information of the terminal device identifier.

[0323] Based on this, the present application provides a communication method, which takes the interaction between a network device and a terminal device as an example. Among them, the network device can be a chip, a chip module, a communication module, etc., and the terminal device can be a chip, a chip module, a communication module, a low-power receiver, etc., and no specific limitation is made here. The following will be described in "Case A" and "Case B".

[0324]

Situation A

[0325] In "Situation A", Figure 2 is a schematic flow diagram of a communication method according to an embodiment of the present application, which specifically includes the following steps:

[0326] S210. The network device sends a wake-up signal at a frequency-domain position or a time-domain position, and the frequency-domain position or the time-domain position corresponds to a first terminal device identification part.

[0327] Correspondingly, the terminal device listens for the wake-up signal at a frequency-domain position or a time-domain position.

[0328] Among them, the wake-up signal here can be a narrowband wake-up signal.

[0329] It can be seen that since the frequency-domain position or the time-domain position can correspond to the first terminal device identification part, different frequency-domain positions or different time-domain positions can correspond to different first terminal device identification parts. Therefore, the network device can wake up terminal devices with different terminal device identifications at different frequency-domain positions or different time-domain positions. Correspondingly, terminal devices with different identifications can listen for their respective wake-up signals at different frequency-domain positions or different time-domain positions, thereby realizing frequency division multiplexing of multiple wake-up signals. By frequency division multiplexing of multiple wake-up signals, the grouping of wake-up signals can be increased (such as increasing the number of information bits carried). When multiple narrowband wake-up signals are frequency division multiplexed, the frequency position can also carry information, which is beneficial to reducing the information carried by the narrowband wake-up signal, and further beneficial to reducing the sequence length (time-domain resource overhead) of the narrowband wake-up signal.

[0330] Optionally, the frequency-domain position can be a frequency-domain unit such as a carrier, a cell, a subband, a resource block (RB), or a bandwidth part (BWP), that is, a frequency position can be a carrier, a cell, a subband, an RB, or a bandwidth part, etc.

[0331] Optionally, the time-domain position can be a time-domain unit such as a symbol, a time slot, a subframe, or a mini-slot.

[0332] Optionally, the frequency-domain position can be represented by a frequency-domain position index.

[0333] Optionally, the time-domain position can be represented by a time-domain position index.

[0334] Optionally, the first terminal device identification part can correspond to a frequency-domain position terminal device group.

[0335] In this way, for a network device, the network device can send wake-up signals to different terminal device groups at different frequency domain positions. For a terminal device, the terminal device can listen for wake-up signals at the corresponding frequency domain position according to the terminal device group it belongs to.

[0336] Optionally, a frequency domain position terminal device group refers to a grouping of terminal devices with the same frequency domain position. The terminal devices listening for wake-up signals at this frequency domain position belong to the same frequency domain position terminal device group.

[0337] In addition, the "terminal device group" mentioned in this application can be "terminal device grouping". That is to say, the "group", "grouping" and "group" mentioned in this embodiment can be equivalent to each other.

[0338] Optionally, the first terminal device identification part can correspond to a time domain position terminal device group.

[0339] In this way, for a network device, the network device can send wake-up signals to different terminal device groups at different time domain positions. For a terminal device, the terminal device can listen for wake-up signals at the corresponding time domain position according to the terminal device group it belongs to.

[0340] Optionally, a time domain position terminal device group refers to a grouping of terminal devices with the same time domain position. The terminal devices listening for wake-up signals at this time domain position belong to the same time domain position terminal device group.

[0341] It should be noted that the above "time domain position terminal device group" and / or "frequency domain position terminal device group" can be regarded as a grouping method for terminal devices specifically designed for wake-up signals, that is, associating the time domain position and / or frequency domain position with a specifically designed grouping to improve flexibility. A time domain position and / or frequency domain position can be regarded as a listening opportunity.

[0342] Furthermore, the frequency domain position terminal device group can be a supergroup (supergroup or hypergroup) or a subgroup (subgroup) of the listening opportunity terminal device group.

[0343] It should be noted that terminal devices can be grouped by listening opportunities, that is, different listening opportunities correspond to different listening opportunity terminal device groups. When the frequency domain position terminal device group is a supergroup of the listening opportunity terminal device group, the frequency domain position terminal device group contains one or more listening opportunity terminal device groups; when the frequency domain position terminal device group is a subgroup of the listening opportunity terminal device group, the listening opportunity terminal device group contains one or more frequency domain position terminal device groups.

[0344] Further, the time-domain location terminal device group can be a supergroup of the listening opportunity terminal device group or a subgroup of the listening opportunity terminal device group.

[0345] It should be noted that the terminal devices can be grouped according to the listening opportunities, that is, different listening opportunities correspond to different listening opportunity terminal device groups. When the time-domain location terminal device group is a supergroup of the listening opportunity terminal device group, the time-domain location terminal device group includes one or more listening opportunity terminal device groups; when the time-domain location terminal device group is a subgroup of the listening opportunity terminal device group, the listening opportunity terminal device group includes one or more time-domain location terminal device groups.

[0346] Optionally, for the relationship between the frequency-domain location terminal device group and the time-domain location terminal device group, the frequency-domain location terminal device group can be a supergroup of the time-domain location terminal device group or a subgroup of the time-domain location terminal device group.

[0347] Optionally, there can be 2, 4, or 8 frequency-domain locations.

[0348] In this way, the frequency-domain locations can correspond to 2, 4, or 8 terminal device groups, which can avoid the overly complex resource allocation caused by too many terminal device groups, and 2, 4, 8 can respectively correspond to 1, 2, 3 bits in the terminal device identifier, which is easy for system design.

[0349] Optionally, there can be 2, 4, or 8 time-domain locations.

[0350] In this way, the time-domain locations can correspond to 2, 4, or 8 terminal device groups, which can avoid the overly complex resource allocation caused by too many terminal device groups, and 2, 4, 8 can respectively correspond to 1, 2, 3 bits in the terminal device identifier, which is easy for system design.

[0351]

Situation B

[0352] In "Situation B", Figure 3 is a schematic flowchart of a communication method according to an embodiment of the present application, which specifically includes the following steps:

[0353] S310. The network device sends a wake-up signal on a frequency-domain location subset or a time-domain location subset. The frequency-domain location subset corresponds to a first part of the terminal device identifier. The frequency-domain location subset includes multiple frequency-domain locations, and the time-domain location subset includes multiple time-domain locations.

[0354] Correspondingly, the terminal device listens for the wake-up signal on the frequency-domain location subset or the time-domain location subset.

[0355] Among them, the wake-up signal here can be a narrowband wake-up signal.

[0356] It can be seen that since the frequency-domain position subset or the time-domain position subset can be corresponding to the first terminal device identification part, and different frequency-domain position subsets or different time-domain position subsets can correspond to different first terminal device identification parts, the network device can wake up terminal devices with different terminal device identifications on different frequency-domain position subsets or different time-domain position subsets. Correspondingly, terminal devices with different identifications can listen for their respective wake-up signals on different frequency-domain position subsets or different time-domain position subsets, so as to achieve frequency-division multiplexing of multiple wake-up signals. Among them, frequency-division multiplexing of multiple wake-up signals can increase the grouping of wake-up signals (increase the number of information bits carried). When multiple narrowband wake-up signals are frequency-division multiplexed, the frequency position can also carry information, which is conducive to reducing the information carried by the narrowband wake-up signals, and further conducive to reducing the sequence length (time-domain resource overhead) of the narrowband wake-up signals.

[0357] Optionally, the frequency-domain position subset can be multiple carriers, multiple cells, multiple subbands, multiple RBs, or multiple bandwidth parts, etc.

[0358] Optionally, the multiple time-domain positions can be multiple symbols, multiple time slots, multiple subframes, multiple mini time slots, etc.

[0359] Optionally, the frequency-domain position subset can be represented by a frequency-domain position subset index.

[0360] Optionally, the time-domain position subset can be represented by a time-domain position subset index.

[0361] Optionally, the first terminal device identification part can correspond to a frequency-domain position subset terminal device group.

[0362] In this way, for the network device, the network device can send wake-up signals to different terminal device groups on different frequency-domain position subsets. For example, wake-up signals are sent on all frequency-domain position subsets. For the terminal device, the terminal device can listen for wake-up signals on the corresponding frequency-domain position subset according to the terminal device group it belongs to. For example, when signals are detected on all frequency-domain position subsets, it is confirmed that the wake-up signal is detected.

[0363] Optionally, a frequency-domain position subset terminal device group refers to a group of terminal devices with the same frequency-domain position subset. The terminal devices that listen for wake-up signals on this frequency-domain position subset belong to the same frequency-domain position subset terminal device group.

[0364] Optionally, the first terminal device identification part can correspond to a time-domain position subset terminal device group.

[0365] In this way, for a network device, the network device can send wake-up signals to different terminal device groups on different subsets of time domain positions. For example, wake-up signals are sent on all subsets of time domain positions. For a terminal device, the terminal device can listen for wake-up signals on the corresponding subset of time domain positions according to the terminal device group it belongs to. For example, the wake-up signal is confirmed to be detected only when signals are detected on all subsets of time domain positions.

[0366] Optionally, a terminal device group of a subset of time domain positions refers to a grouping of terminal devices with the same subset of time domain positions. Terminal devices that listen for wake-up signals on this subset of time domain positions belong to the same terminal device group of a subset of time domain positions.

[0367] Optionally, a terminal device group of a subset of frequency domain positions can be a supergroup or a subgroup of the listening opportunity terminal device group.

[0368] It should be noted that when the terminal device group of a subset of frequency domain positions is a supergroup of the listening opportunity terminal device group, the terminal device group of a subset of frequency domain positions can include one or more listening opportunity terminal device groups; when the terminal device group of a subset of frequency domain positions is a subgroup of the listening opportunity terminal device group, the listening opportunity terminal device group can include one or more terminal device groups of a subset of frequency domain positions.

[0369] Optionally, a terminal device group of a subset of time domain positions can be a supergroup or a subgroup of the listening opportunity terminal device group.

[0370] It should be noted that when the terminal device group of a subset of time domain positions is a supergroup of the listening opportunity terminal device group, the terminal device group of a subset of time domain positions can include one or more listening opportunity terminal device groups; when the terminal device group of a subset of time domain positions is a subgroup of the listening opportunity terminal device group, the listening opportunity terminal device group can include one or more terminal device groups of a subset of time domain positions.

[0371] Optionally, regarding the relationship between the terminal device group of a subset of frequency domain positions and the terminal device group of a subset of time domain positions, the terminal device group of a subset of frequency domain positions can be a supergroup or a subgroup of the terminal device group of a subset of time domain positions.

[0372] Optionally, the subset of frequency domain positions can include 2, 4, or 8 frequency domain positions.

[0373] In this way, the frequency domain positions can correspond to 2, 4, or 8 terminal device groups, which can avoid overly complex resource allocation caused by too many terminal device groups, and 2, 4, and 8 can respectively correspond to 1, 2, and 3 bits in the terminal device identifier, which is easy for system design.

[0374] Optionally, the subset of time domain positions can include 2, 4, or 8 time domain positions.

[0375] In this way, the frequency-domain position can correspond to 2, 4, or 8 terminal device groups, which can avoid overly complex resource allocation caused by too many terminal device groups, and 2, 4, and 8 can respectively correspond to 1, 2, and 3 bits in the terminal device identifier, which is easy for system design.

[0376]

Mode 1-2

[0377] In "Mode 1-2", the present application needs to study the time-frequency resource position of the narrowband wake-up signal under the frequency-division multiplexing of the wake-up signals supporting multiple narrowbands.

[0378] Since the wake-up signal is periodically monitored, the monitoring opportunity of the wake-up signal (equivalent to the time position index) carries part of the information of the terminal device identifier (such as UE ID), and the terminal device identifier can be used to indicate / distinguish / identify the terminal device. Therefore, in "Mode 1-2", the present application can consider the frequency-division multiplexing of multiple narrowband wake-up signals, and the frequency position index carries the first part of the information of the terminal device identifier, and the monitoring opportunity of the wake-up signal carries the second part of the information of the terminal device identifier.

[0379] Based on this, the present application provides a communication method, which takes the interaction between a network device and a terminal device as an example. Among them, the network device can be a chip, a chip module, a communication module, etc., and the terminal device can be a chip, a chip module, a communication module, a low-power receiver, etc., and no specific limitation is made thereto. The following will be described in "Situation a" and "Situation b".

[0380]

Situation a

[0381] In "Situation a", Figure 4 is a schematic flowchart of another communication method according to an embodiment of the present application, which specifically includes the following steps:

[0382] S410. The network device sends a wake-up signal on a first combination, where the first combination is a combination of a frequency-domain position and a time-domain position; the frequency-domain position corresponds to a first part of the terminal device identifier, and the time-domain position corresponds to a second part of the terminal device identifier; or, the first combination corresponds to a third part of the terminal device identifier.

[0383] Correspondingly, the terminal device monitors the wake-up signal on the first combination.

[0384] Among them, the wake-up signal here can be a narrowband wake-up signal.

[0385] It can be seen that since the frequency-domain position can be associated with the first terminal device identification part and the time-domain position can be associated with the second terminal device identification part, the network device can wake up terminal devices with different first terminal device identification parts and different second terminal device identification parts at different frequency-domain positions and different time-domain positions; correspondingly, the terminal device can listen for wake-up signals at different frequency-domain positions and different time-domain positions.

[0386] Alternatively, since the first combination can be associated with the third terminal device identification part, the network device can wake up terminal devices with different third terminal device identifications at different first combinations; correspondingly, the terminal device can listen for wake-up signals at different first combinations.

[0387] Optionally, the frequency-domain position can be represented by a frequency-domain position index.

[0388] Optionally, the time-domain position can be represented by a time-domain position index.

[0389] Optionally, the combination of the frequency-domain position and the time-domain position can be represented by the combination of the frequency-domain position index and the time-domain position index, or can be represented by the index of the combination of the frequency-domain position and the time-domain position.

[0390] Optionally, the first terminal device identification part can correspond to a frequency-domain position terminal device group.

[0391] In this way, for the network device, the network device can send wake-up signals to different terminal device groups at different frequency-domain positions. For the terminal device, the terminal device can listen for wake-up signals at the corresponding frequency-domain positions according to the terminal device group it belongs to.

[0392] Furthermore, the frequency-domain position terminal device group can be a supergroup of the listening opportunity terminal device group or a subgroup of the listening opportunity terminal device group.

[0393] It should be noted that the terminal device can be grouped by the listening opportunity, that is, different listening opportunities correspond to different listening opportunity terminal device groups. When the frequency-domain position terminal device group is a supergroup of the listening opportunity terminal device group, the frequency-domain position terminal device group contains one or more listening opportunity terminal device groups; when the frequency-domain position terminal device group is a subgroup of the listening opportunity terminal device group, the listening opportunity terminal device group contains one or more frequency-domain position terminal device groups.

[0394] Optionally, the second terminal device identification part can correspond to a time-domain position terminal device group.

[0395] In this way, for a network device, the network device can send wake-up signals to different terminal device groups at different time domain positions. For a terminal device, the terminal device can listen for wake-up signals at the corresponding time domain position according to the terminal device group it belongs to.

[0396] Furthermore, the time domain position terminal device group can be a supergroup of the listening opportunity terminal device group or a subgroup of the listening opportunity terminal device group.

[0397] It should be noted that terminal devices can be grouped according to listening opportunities, that is, different listening opportunities correspond to different listening opportunity terminal device groups. When the time domain position terminal device group is a supergroup of the listening opportunity terminal device group, the time domain position terminal device group contains one or more listening opportunity terminal device groups; when the time domain position terminal device group is a subgroup of the listening opportunity terminal device group, the listening opportunity terminal device group contains one or more time domain position terminal device groups.

[0398] Among them, the listening opportunity terminal device group contains one or more time domain position terminal device groups, which can be understood as that one listening opportunity contains one or more time domain positions.

[0399] Optionally, for the relationship between the frequency domain position terminal device group and the time domain position terminal device group, the frequency domain position terminal device group can be a supergroup of the time domain position terminal device group or a subgroup of the time domain position terminal device group.

[0400] Optionally, the third terminal device identification part can correspond to the time-frequency domain position terminal device group.

[0401] Among them, the time-frequency domain position can be understood as the combination of the time domain position and the frequency domain position.

[0402] In this way, for a network device, the network device can send wake-up signals to different terminal device groups at different time-frequency domain positions. For a terminal device, the terminal device can listen for wake-up signals at the corresponding time-frequency domain position according to the terminal device group it belongs to.

[0403] Furthermore, the time-frequency domain position terminal device group can be a supergroup of the listening opportunity terminal device group or a subgroup of the listening opportunity terminal device group.

[0404] It should be noted that terminal devices can be grouped according to listening opportunities, that is, different listening opportunities correspond to different listening opportunity terminal device groups. When the time-frequency domain position terminal device group is a supergroup of the listening opportunity terminal device group, the time-frequency domain position terminal device group contains one or more listening opportunity terminal device groups; when the time-frequency domain position terminal device group is a subgroup of the listening opportunity terminal device group, the listening opportunity terminal device group contains one or more time-frequency domain position terminal device groups.

[0405] Optionally, there may be 2, 4, or 8 frequency-domain positions.

[0406] In this way, the frequency-domain positions can correspond to 2, 4, or 8 groups of terminal devices, which can avoid the overly complex resource allocation caused by too many groups of terminal devices, and 2, 4, and 8 can respectively correspond to 1, 2, and 3 bits in the terminal device identifier, facilitating system design.

[0407] Optionally, there may be 2, 4, or 8 time-domain positions.

[0408] In this way, the time-domain positions can correspond to 2, 4, or 8 groups of terminal devices, which can avoid the overly complex resource allocation caused by too many groups of terminal devices, and 2, 4, and 8 can respectively correspond to 1, 2, and 3 bits in the terminal device identifier, facilitating system design.

[0409] Optionally, there may be 4, 8, or 16 first combinations.

[0410] In this way, the first combinations can correspond to 4, 8, or 16 groups of terminal devices, which can avoid the overly complex resource allocation caused by too many groups of terminal devices, and 4, 8, and 16 can respectively correspond to 2, 3, and 4 bits in the terminal device identifier, facilitating system design.

[0411] Optionally, if there are 4 first combinations, there are 2 frequency-domain positions and 2 time-domain positions.

[0412] In this way, there are 4 combinations of the total frequency-domain and time-domain positions, and both the frequency-domain positions and the time-domain positions carry valid information, thus facilitating the improvement of resource utilization rate.

[0413] Optionally, if there are 8 first combinations, there are 2 frequency-domain positions and 4 time-domain positions; or, there are 4 frequency-domain positions and 2 time-domain positions.

[0414] In this way, there are 8 combinations of the total frequency-domain and time-domain positions, and both the frequency-domain positions and the time-domain positions carry valid information, thus facilitating the improvement of resource utilization rate.

[0415] Optionally, if there are 16 first combinations, there are 2 frequency-domain positions and 8 time-domain positions; or, there are 4 frequency-domain positions and 4 time-domain positions; or, there are 8 frequency-domain positions and 2 time-domain positions.

[0416] In this way, there are 8 combinations of the total frequency-domain and time-domain positions, and both the frequency-domain positions and the time-domain positions carry valid information, thus facilitating the improvement of resource utilization rate.

[0417]

Situation b

[0418] In "Situation b",Figure 5 It is a schematic flowchart of another communication method according to an embodiment of the present application, which specifically includes the following steps:

[0419] S510. The network device sends a wake-up signal on a subset of the first combination, where the subset of the first combination includes multiple first combinations; the first combination corresponds to a third terminal device identification part, and the first combination is a combination of a frequency domain position and a time domain position.

[0420] Correspondingly, the terminal device listens for the wake-up signal on the subset of the first combination.

[0421] Among them, the wake-up signal here can be a narrowband wake-up signal.

[0422] It can be seen that since the subset of the first combination can be associated with the third terminal device identification part, the network device can wake up the terminal devices with different third terminal device identification parts on different subsets of the first combination; correspondingly, the terminal device can listen for the wake-up signal on different subsets of the first combination.

[0423] Optionally, the frequency domain position can be represented by a frequency domain position index.

[0424] Optionally, the time domain position can be represented by a time domain position index.

[0425] Optionally, the combination of the frequency domain position and the time domain position can be represented by a combination of a frequency domain position index and a time domain position index, or can be represented by an index of the combination of the frequency domain position and the time domain position.

[0426] Optionally, the third terminal device identification part can correspond to a time-frequency domain position subset terminal device group.

[0427] In this way, for the network device, the network device can send wake-up signals to different terminal device groups on different time-frequency domain position subsets. For the terminal device, the terminal device can listen for the wake-up signal on the corresponding time-frequency domain position subset according to the terminal device group it belongs to.

[0428] Furthermore, the time-frequency domain position subset terminal device group can be a supergroup of the listening opportunity terminal device group or a subgroup of the listening opportunity terminal device group.

[0429] It should be noted that the terminal devices can be grouped according to the listening opportunity, that is, different listening opportunities correspond to different listening opportunity terminal device groups. When the time-frequency domain position subset terminal device group is a supergroup of the listening opportunity terminal device group, the time-frequency domain position subset terminal device group includes one or more listening opportunity terminal device groups; when the time-frequency domain position subset terminal device group is a subgroup of the listening opportunity terminal device group, the listening opportunity terminal device group includes one or more time-frequency domain position subset terminal device groups.

[0430] Optionally, there may be 2, 4, or 8 frequency-domain positions.

[0431] In this way, the frequency-domain positions can correspond to 2, 4, or 8 groups of terminal devices, which can avoid the overly complex resource allocation caused by too many groups of terminal devices. Moreover, 2, 4, and 8 can respectively correspond to 1, 2, and 3 bits in the terminal device identifier, which is conducive to system design.

[0432] Optionally, there may be 2, 4, or 8 time-domain positions.

[0433] In this way, the time-domain positions can correspond to 2, 4, or 8 groups of terminal devices, which can avoid the overly complex resource allocation caused by too many groups of terminal devices. Moreover, 2, 4, and 8 can respectively correspond to 1, 2, and 3 bits in the terminal device identifier, which is conducive to system design.

[0434] Optionally, there may be 4, 8, or 16 first combinations.

[0435] In this way, the first combinations can correspond to 4, 8, or 16 groups of terminal devices, which can avoid the overly complex resource allocation caused by too many groups of terminal devices. Moreover, 4, 8, and 16 can respectively correspond to 2, 3, and 4 bits in the terminal device identifier, which is conducive to system design.

[0436] Optionally, if there are 4 first combinations, there are 2 frequency-domain positions and 2 time-domain positions.

[0437] In this way, there are 4 combinations of the total frequency-domain positions and time-domain positions, and both the frequency-domain positions and the time-domain positions carry valid information, thus facilitating the improvement of resource utilization rate.

[0438] Optionally, if there are 8 first combinations, there are 2 frequency-domain positions and 4 time-domain positions; or, there are 4 frequency-domain positions and 2 time-domain positions.

[0439] In this way, there are 8 combinations of the total frequency-domain positions and time-domain positions, and both the frequency-domain positions and the time-domain positions carry valid information, thus facilitating the improvement of resource utilization rate.

[0440] Optionally, if there are 16 first combinations, there are 2 frequency-domain positions and 8 time-domain positions; or, there are 4 frequency-domain positions and 4 time-domain positions; or, there are 8 frequency-domain positions and 2 time-domain positions.

[0441] In this way, there are 8 combinations of the total frequency-domain positions and time-domain positions, and both the frequency-domain positions and the time-domain positions carry valid information, thus facilitating the improvement of resource utilization rate.

[0442]

Solution 2

[0443] In "Solution 2", this embodiment needs to mention the "monitoring opportunity terminal device group". Among them, the monitoring opportunity terminal device group can utilize some existing terminal device grouping methods, that is, associating the time domain position and / or frequency domain position with the existing grouping to simplify the design.

[0444] Optionally, a monitoring opportunity terminal device group can be a grouping of terminal devices with the same PO or PMO. The terminal devices that monitor paging or paging PDCCH at this monitoring opportunity belong to the same monitoring opportunity terminal device group. At this time, the monitoring opportunity terminal device group can also be called a paging opportunity terminal device group (PO UE group), a terminal device group (UE group), or a paging opportunity group (PO group). A paging opportunity can be composed of a set of monitoring opportunities of paging-related PDCCH.

[0445] Optionally, a monitoring opportunity terminal device group can be a grouping of terminal devices with the same PEI-O or PEI-MO. The terminal devices that monitor PEI or PEI PDCCH at this monitoring opportunity belong to the same monitoring opportunity terminal device group. At this time, the monitoring opportunity terminal device group can also be called a PEI-O terminal device group (PEI-O UE group). A PEI-O can be composed of a set of PEI-MO.

[0446] Optionally, a monitoring opportunity terminal device group can be a subgroup of the terminal devices in the PEI. The PEI can indicate a subgroup of the PO UE group, that is, the PO UE group can be subdivided, for example, in the form of a bitmap (bitmap), with 1 bit corresponding to one subgroup.

[0447] Next, the embodiments of this application will illustrate the relevant research under the frequency division multiplexing of wake-up signals supporting multiple narrow bands from the specific implementation manners.

[0448]

Method 2-1

[0449] In "Method 2-1", when the wake-up signals of multiple narrow bands are frequency division multiplexed, due to frequency deviation (the accuracy of the clock of the low-power receiver is relatively low), there will be interference between the wake-up signals of multiple narrow bands. Therefore, it is necessary to introduce a guard band, but the guard band will also increase the system overhead.

[0450] Combined with the above content, through the preamble part sent by the network device, the terminal device can perform time-frequency synchronization, thereby reducing the frequency deviation and further reducing the guard band. However, each narrow-band wake-up signal has a preamble part. Although the guard band can be reduced, the preamble part itself will also increase the system overhead. Therefore, this is a tradeoff problem.

[0451] Based on this, for the wake-up signals of multiple narrow bands in frequency division multiplexing, the present application can adopt a "shared" preamble, which can not only reduce the frequency deviation but also avoid excessive preambles to save signaling / resource overhead.

[0452] Figure 6 FIG. 5 is a schematic flowchart of another communication method according to an embodiment of the present application, which takes the interaction between a network device and a terminal device as an example. Among them, the network device may be a chip, a chip module, a communication module, etc., and the terminal device may be a chip, a chip module, a communication module, a low-power receiver, etc., and no specific limitation is made thereto. Specifically, the method includes the following steps:

[0453] S610. The network device sends a preamble, and the preamble is before the wake-up signals corresponding to the terminal device group in one or more listening opportunities; or, the preamble is before the wake-up signals corresponding to the terminal device group in one or more frequency domain positions; or, the preamble is before the wake-up signals corresponding to the terminal device group in one or more time domain positions; or, the preamble is before the wake-up signals corresponding to the device group in one or more time-frequency domain positions.

[0454] Correspondingly, the terminal device receives the preamble.

[0455] Among them, the preamble may be the preamble of the narrow-band wake-up signal.

[0456] Among them, the preamble can be used for time-frequency synchronization.

[0457] It can be seen that since the wake-up signals of the terminal device groups divided by one or more listening opportunities / one or more time domain positions / one or more frequency domain positions share the same preamble, this preamble is equivalent to a "shared" preamble. In this way, by sharing the preamble, the frequency deviation can be reduced and excessive preambles can be avoided to save signaling / resource overhead.

[0458] Optionally, there is a time interval between the preamble and the first wake-up signal of the wake-up signals corresponding to the terminal device group in one or more listening opportunities.

[0459] In this way, when processing the preamble, the low-power receiver can enable a high-precision clock to improve the time-frequency synchronization accuracy, and when listening to the wake-up signal, the low-power receiver can enable a low-precision clock to reduce power consumption. Since this clock switching requires time, there needs to be a time interval (time interval), or a guard period, before the first wake-up signal. Of course, the present application does not limit the clock switching here, and there may also be switching of other hardware parts or components.

[0460] Optionally, there is a time interval between the leading part and the first wake-up signal among the wake-up signals corresponding to one or more frequency-domain position terminal device groups.

[0461] It can be seen that since the relevant handover takes time, there needs to be a time interval, or a guard period, before the first wake-up signal.

[0462] Optionally, there is a time interval between the leading part and the first wake-up signal among the wake-up signals corresponding to one or more time-domain position terminal device groups.

[0463] It can be seen that since the relevant handover takes time, there needs to be a time interval, or a guard period, before the first wake-up signal.

[0464] Optionally, there is a time interval between the leading part and the first wake-up signal among the wake-up signals corresponding to one or more time-frequency domain position terminal device groups.

[0465] It can be seen that since the relevant handover takes time, there needs to be a time interval, or a guard period, before the first wake-up signal.

[0466] Furthermore, the time interval can be one or more orthogonal frequency division multiplexing (OFDM) symbols.

[0467] In this way, using OFDM symbol counting can simplify the design, and the OFDM symbols not used for wake-up signals can be used for other signals / channels.

[0468] Preferably, the one or more OFDM symbols can include 1 or 2 OFDM symbols.

[0469] In this way, the present application can control the guard period to be as small as possible and simplify resource allocation.

[0470] Furthermore, the time interval can be configured by the network.

[0471] In this way, the network can plan the time interval used by the current cell according to the terminal device capabilities.

[0472] Furthermore, the time interval can be determined by pre-configuration, protocol stipulation, or autonomously by the terminal device.

[0473] In this way, the present application can configure the time interval in a flexible manner in multiple ways to improve flexibility.

[0474] Furthermore, the time interval is not less than the minimum time interval reported by the terminal device.

[0475] In this way, the terminal device can report the minimum time interval according to its own low-power reception (hardware) capabilities, such as the conversion time of bandwidth, filters, etc. Then, the network plans the time interval used by the current cell based on the capabilities reported by the terminal devices using low-power receivers in the current cell or tracking area, ensuring that these terminal devices can successfully complete handovers.

[0476] Optionally, the frequency-domain resources of the preamble part can be the frequency expansion of the wake-up signals corresponding to one or more groups of terminal devices in the listening opportunities.

[0477] In this way, the frequency-domain resources of the preamble part shared by the terminal device groups divided by one or more listening opportunities are the same as the bandwidth of the frequency-domain resources of all wake-up signals corresponding to the terminal device groups divided by one or more listening opportunities, which is conducive to system design and resource allocation.

[0478] Optionally, the frequency-domain resources of the preamble part are the frequency expansion of the wake-up signals corresponding to one or more groups of terminal devices in the frequency-domain positions.

[0479] In this way, the frequency-domain resources of the preamble part shared by the terminal device groups divided by one or more frequency-domain positions are the same as the bandwidth of the frequency-domain resources of all wake-up signals corresponding to the terminal device groups divided by one or more frequency-domain positions, which is conducive to system design and resource allocation.

[0480] Optionally, the frequency-domain resources of the preamble part are the frequency expansion of the wake-up signals corresponding to one or more groups of terminal devices in the time-domain positions.

[0481] In this way, the frequency-domain resources of the preamble part shared by the terminal device groups divided by one or more time-domain positions are the same as the bandwidth of the frequency-domain resources of all wake-up signals corresponding to the terminal device groups divided by one or more time-domain positions, which is conducive to system design and resource allocation.

[0482] Optionally, the frequency-domain resources of the preamble part are the frequency expansion of the wake-up signals corresponding to one or more groups of terminal devices in the time-frequency-domain positions.

[0483] In this way, the frequency-domain resources of the preamble part shared by the terminal device groups divided by one or more time-frequency-domain positions are the same as the bandwidth of the frequency-domain resources of all wake-up signals corresponding to the terminal device groups divided by one or more time-frequency-domain positions, which is conducive to system design and resource allocation.

[0484]

Solution 3

[0485] In "Solution 3", the embodiments of the present application will hereinafter illustrate the related research on the design of synchronization signals in various implementation manners. Among them, any combination can be made among the various implementation manners to form a new implementation manner, and this new implementation manner is also within the scope protected by the present application, which will not be elaborated herein.

[0486] In some scenarios, the synchronization signal needs to be sent in a beam sweeping manner to improve coverage. The beam sweeping can be completed by time division multiplexing of a series of synchronization signals, that is, there are synchronization signals at multiple time domain positions. When there are many beams, the beam sweeping can also be completed by frequency division multiplexing of a series of synchronization signals, that is, there are synchronization signals at multiple frequency domain positions.

[0487] It should be noted that some low-power receivers can receive orthogonal frequency division multiplexing (OFDM) signals, and thus can receive PSS / SSS, and even all signals / channels of the synchronization signal block. In addition, in future systems (such as 6G), low-power receivers may be able to receive the synchronization signal block. Therefore, the "synchronization signal" in the following text is not limited to the low-power synchronization signal, but can also be the synchronization signal block, that is, the following synchronization signal can be replaced by the synchronization signal block. Here, the synchronization signal block is a generalized synchronization signal block, which can be the synchronization signal block in the current 5G system, or the synchronization signal block in future systems.

[0488]

Mode 3-1

[0489] In "Mode 3-1", the terminal device can receive the synchronization signal at a frequency domain position.

[0490] In this way, the terminal device can receive different synchronization signals at different frequency domain positions, and different synchronization signals correspond to different beams. Thus, the terminal device obtains synchronization on different beams, solves the frequency selectivity of the beam direction, and reduces the time domain overhead of the beam direction. Correspondingly, the network device can send the synchronization signal at a frequency domain position.

[0491] In this way, the network device can send different synchronization signals at different frequency domain positions, and different synchronization signals correspond to different beams, so that the terminal device obtains synchronization on different beams, solves the frequency selectivity of the beam direction, and reduces the time domain overhead of the beam direction.

[0492] In addition, the terminal device can obtain the beam identifier according to the synchronization signal, and obtain the time identifier through the beam identifier. The terminal device needs to determine the timing information of the network (or cell), that is, the time identifier of the received synchronization signal in the network, so as to achieve timing synchronization with the network.

[0493] Correspondingly, the network device may send a beam identifier through the synchronization signal, so that the terminal device can obtain the time identifier through the beam identifier.

[0494] Optionally, the time identifier may be the number / index of a time unit, where the time unit may be a frame, a subframe, a time slot, and / or a symbol, etc. The time identifier may also be the number / index of the synchronization signal in the time arrangement.

[0495] Optionally, there is a preset relationship between the beam identifier and the time identifier. In this way, the terminal device derives the time identifier from the beam identifier according to the preset relationship.

[0496] Optionally, when the time identifier is the number / index of a time unit, the beam identifier may be arranged first according to the frequency domain position of the synchronization signal and then according to the number / index of the time unit. Then, by taking the modulo of the beam identifier with the number of frequency domain positions, the number / index of the time unit, that is, the time identifier, can be obtained.

[0497] Optionally, when the time identifier is the number / index of the synchronization signal in the time arrangement, the beam identifier may be arranged first according to the frequency domain position of the synchronization signal and then according to the number / index of the synchronization signal in the time arrangement. Then, by taking the modulo of the beam identifier with the number of frequency domain positions, the number / index of the synchronization signal in the time arrangement can be obtained, and this number / index is the time identifier.

[0498] Optionally, the number of frequency domain positions may be given by a higher layer parameter or a preset value.

[0499] Optionally, there is a preset relationship between the beam identifier, the time identifier, and the frequency domain identifier, where the frequency domain identifier is the number / index of the frequency position. In this way, the terminal device derives the time identifier from the beam identifier and the frequency domain identifier according to the preset relationship.

[0500]

Method 3-2

[0501] In "Method 3-2", the terminal device may receive the synchronization signal on a subset of frequency domain positions, and the subset of frequency domain positions includes multiple frequency domain positions.

[0502] In this way, the terminal device may receive different synchronization signals on different subsets of frequency domain positions, and different synchronization signals correspond to different beams. Thus, the terminal device obtains synchronization on different beams, solves the frequency selectivity of the beam direction, and reduces the time domain overhead of the beam direction.

[0503] Correspondingly, the network device may send the synchronization signal on a subset of frequency domain positions.

[0504] In this way, the network device can send different synchronization signals on different subsets of frequency-domain positions, where different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time-domain overhead of the beam direction.

[0505] Optionally, the subset of frequency-domain positions can be a set of frequency-domain positions or a part of the set of frequency-domain positions, that is, a subset. The frequency-domain position is the basic unit of the frequency domain, and the resources of the synchronization signal are on multiple frequency-domain positions, which increases the flexibility.

[0506] In addition, the terminal device can obtain the beam identifier according to the synchronization signal and obtain the time identifier through the beam identifier. The terminal device needs to determine the timing information of the network (or cell), that is, the time identifier of the received synchronization signal in the network, so as to achieve timing synchronization with the network.

[0507] Correspondingly, the network device can send the beam identifier through the synchronization signal, so that the terminal device can obtain the time identifier through the beam identifier.

[0508] Optionally, the time identifier can be the number / index of time units, where the time unit can be a frame, a subframe, a time slot, and / or a symbol, etc. The time identifier can also be the number / index of the synchronization signal in the time arrangement.

[0509] Optionally, the beam identifier and the time identifier have a preset relationship. In this way, the terminal device can deduce the time identifier through the beam identifier.

[0510] Optionally, when the time identifier is the number / index of time units, the beam identifier can be arranged first according to the subset of frequency-domain positions of the synchronization signal and then according to the number / index of time units, then the beam identifier modulo the number of subsets of frequency-domain positions can obtain the number / index of time units, that is, the time identifier.

[0511] Optionally, when the time identifier is the number / index of the synchronization signal in the time arrangement, the beam identifier can be arranged first according to the subset of frequency-domain positions of the synchronization signal and then according to the number / index of the synchronization signal in the time arrangement, then the beam identifier modulo the number of subsets of frequency-domain positions can obtain the number / index of the synchronization signal in the time arrangement, and this number / index is the time identifier.

[0512] Optionally, the number of subsets of frequency-domain positions can be given by a high-layer parameter or a preset value.

[0513] Optionally, the beam identifier, the time identifier, and the frequency-domain identifier have a preset relationship, where the frequency-domain identifier is the number / index of the subset of frequency positions. In this way, the terminal device deduces the time identifier from the beam identifier and the frequency-domain identifier according to this preset relationship.

[0514]

Mode 3-3

[0515] In “Mode 3-3”, the terminal device can receive synchronization signals at time-frequency positions.

[0516] In this way, the terminal device can receive different synchronization signals at different time-frequency positions, and different synchronization signals correspond to different beams. Thus, the terminal device can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead in the beam direction.

[0517] Correspondingly, the network device can send synchronization signals at time-frequency positions.

[0518] In this way, the network device can send different synchronization signals at different time-frequency positions, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead in the beam direction.

[0519] Optionally, the time-frequency position can correspond to a beam identifier. In this way, the network device can send different synchronization signals at different time-frequency positions, and the corresponding terminal device can receive different synchronization signals at different time-frequency positions, and different synchronization signals correspond to different beams. Thus, the terminal device can obtain the selected beam identifier for subsequent beam reporting, etc.

[0520] In addition, the terminal device can obtain a beam identifier based on the synchronization signal and obtain a time identifier through the beam identifier. The terminal device needs to determine the timing information of the network (or cell), that is, the time identifier of the received synchronization signal in the network, so as to achieve timing synchronization with the network.

[0521] Correspondingly, the network device can send a beam identifier through the synchronization signal so that the terminal device can obtain a time identifier through the beam identifier.

[0522] Optionally, the time identifier can be the number / index of a time unit. Among them, the time unit can be a frame, a subframe, a time slot, and / or a symbol, etc. The time identifier can also be the number / index of the synchronization signal in the time arrangement.

[0523] Optionally, the beam identifier and the time identifier have a preset relationship. In this way, the terminal device derives the time identifier from the beam identifier according to the preset relationship.

[0524] Optionally, when the time identifier is the number / index of a time unit, the beam identifier can be arranged first according to the time domain position of the synchronization signal and then according to the number / index of the time unit. Then, the beam identifier modulo the number of time domain positions can obtain the number / index of the time unit, that is, the time identifier.

[0525] Optionally, when the time identifier is the number / index of the synchronization signal in the time arrangement, the beam identifier can be arranged first according to the time domain position of the synchronization signal, and then according to the number / index of the synchronization signal in the time arrangement. Then, taking the modulus of the beam identifier with respect to the number of time domain positions can obtain the number / index of the synchronization signal in the time arrangement, and this number / index is the time identifier.

[0526] Optionally, the number of time domain positions can be given by a higher layer parameter or a preset value.

[0527] Optionally, there is a preset relationship between the beam identifier, the time identifier, and the time domain identifier, where the time domain identifier is the number / index of the time domain position. In this way, the terminal device derives the time identifier from the beam identifier and the time domain identifier according to this preset relationship.

[0528]

Method 3-4

[0529] In "Method 3-4", the terminal device receives the synchronization signal on a subset of time domain positions, and the subset of time domain positions includes multiple time domain positions.

[0530] In this way, the terminal device can receive different synchronization signals on different subsets of time domain positions, and different synchronization signals correspond to different beams. Thus, the terminal device obtains synchronization on different beams, solves the frequency / time selectivity of the beam direction, and reduces the resource overhead in the beam direction.

[0531] Correspondingly, the network device can send the synchronization signal on a subset of time domain positions, where the subset of time domain positions includes multiple time domain positions.

[0532] In this way, the network device can send different synchronization signals on different subsets of time-frequency positions, and different synchronization signals correspond to different beams, so that the terminal device obtains synchronization on different beams, solves the frequency / time selectivity of the beam direction, and reduces the resource overhead in the beam direction.

[0533] Optionally, the subset of time domain positions can be a set of time domain positions, or a part of the set of time domain positions, that is, a subset. The time domain position is the basic unit of the time domain, and the resources of the synchronization signal are on multiple time domain positions, which increases the flexibility.

[0534] In addition, the terminal device can obtain the beam identifier according to the synchronization signal, and obtain the time identifier through the beam identifier. The terminal device needs to determine the timing information of the network (or cell), that is, the time identifier of the received synchronization signal in the network, so as to achieve timing synchronization with the network.

[0535] Correspondingly, the network device can send the beam identifier through the synchronization signal, so that the terminal device can obtain the time identifier through the beam identifier.

[0536] Optionally, the time identifier may be the number / index of a time unit, where the time unit may be a frame, a sub-frame, a time slot, and / or a symbol, etc. The time identifier may also be the number / index of the synchronization signal in the time arrangement.

[0537] Optionally, the beam identifier and the time identifier have a preset relationship. In this way, the terminal device derives the time identifier from the beam identifier according to the preset relationship.

[0538] Optionally, when the time identifier is the number / index of a time unit, the beam identifier may be arranged first according to the time domain position subset of the synchronization signal, and then according to the number / index of the time unit. Then, the beam identifier modulo the number of time domain position subsets can obtain the number / index of the time unit, that is, the time identifier.

[0539] Optionally, when the time identifier is the number / index of the synchronization signal in the time arrangement, the beam identifier may be arranged first according to the time domain position subset of the synchronization signal, and then according to the number / index of the synchronization signal in the time arrangement. Then, the beam identifier modulo the number of time domain position subsets can obtain the number / index of the synchronization signal in the time arrangement, and this number / index is the time identifier.

[0540] Optionally, the number of time domain position subsets may be given by a higher layer parameter or a preset value.

[0541] Optionally, the beam identifier, the time identifier, and the time domain identifier have a preset relationship, where the time domain identifier is the number / index of the time domain position subset. In this way, the terminal device derives the time identifier from the beam identifier and the time domain identifier according to the preset relationship.

[0542]

Method 3-5

[0543] In "Method 3-5", the terminal device may receive the synchronization signal on the second combination, and the second combination is the combination of the frequency domain position and the time domain position.

[0544] In this way, the terminal device may receive different synchronization signals on different combinations of the frequency domain position and the time domain position, and different synchronization signals correspond to different beams. Thus, the terminal device obtains synchronization on different beams, solves the time / frequency selectivity of the beam direction, and reduces the resource overhead of the beam direction.

[0545] Correspondingly, the network device may send the synchronization signal on the second combination.

[0546] In this way, the network device may send different synchronization signals on different combinations of the frequency domain position and the time domain position, and different synchronization signals correspond to different beams, so that the terminal device obtains synchronization on different beams, solves the time / frequency selectivity of the beam direction, and reduces the resource overhead of the beam direction.

[0547] In addition, the terminal device can obtain the beam identifier according to the synchronization signal, and obtain the time identifier through the beam identifier. The terminal device needs to determine the timing information of the network (or cell), that is, the time identifier of the received synchronization signal in the network, so as to achieve timing synchronization with the network.

[0548] Correspondingly, the network device can send the beam identifier through the synchronization signal, so that the terminal device can obtain the time identifier through the beam identifier.

[0549] Optionally, the time identifier can be the number / index of the time unit. Among them, the time unit can be a frame, a subframe, a time slot, and / or a symbol, etc. The time identifier can also be the number / index of the synchronization signal in the time arrangement.

[0550] Optionally, there is a preset relationship between the beam identifier and the time identifier. In this way, the terminal device derives the time identifier from the beam identifier according to the preset relationship.

[0551] Optionally, when the time identifier is the number / index of the time unit, the beam identifier can be arranged first according to the second combination of the synchronization signal, and then according to the number / index of the time unit. Then, the beam identifier modulo the number of the second combination can obtain the number / index of the time unit, that is, the time identifier.

[0552] Optionally, when the time identifier is the number / index of the synchronization signal in the time arrangement, the beam identifier can be arranged first according to the second combination of the synchronization signal, and then according to the number / index of the synchronization signal in the time arrangement. Then, the beam identifier modulo the number of the second combination can obtain the number / index of the synchronization signal in the time arrangement, and this number / index is the time identifier.

[0553] Optionally, the number of the second combination can be given by a high-layer parameter or a preset value.

[0554] Optionally, there is a preset relationship between the beam identifier, the time identifier and the second combination identifier, where the second combination identifier is the number / index of the second combination. In this way, the terminal device derives the time identifier from the beam identifier and the second combination identifier according to the preset relationship.

[0555]

Method 3-6

[0556] In "Method 3-6", the terminal device can receive the synchronization signal on a subset of the second combination, and the subset of the second combination includes a plurality of second combinations.

[0557] In this way, the terminal device can receive different synchronization signals on different subsets of the second combination, and different synchronization signals correspond to different beams. Thus, the terminal device can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0558] Correspondingly, the network device sends synchronization signals on the subset of the second combination.

[0559] In this way, the network device can send different synchronization signals on different subsets of the second combination, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0560] Optionally, the subset of the second combination can be a set of the second combination, or a part of the set of the second combination, that is, a subset. The second combination is the basic unit of time / frequency domain resources. In this way, the resources of the synchronization signal are on multiple basic units, increasing the flexibility.

[0561] In addition, the terminal device can obtain a beam identifier according to the synchronization signal, and obtain a time identifier through the beam identifier. The terminal device needs to determine the timing information of the network (or cell), that is, the time identifier of the received synchronization signal in the network, so as to achieve timing synchronization with the network.

[0562] Correspondingly, the network device sends a beam identifier through the synchronization signal, so that the terminal device can obtain a time identifier through the beam identifier.

[0563] Optionally, the time identifier can be the number / index of a time unit. Among them, the time unit can be a frame, a subframe, a time slot, and / or a symbol, etc. The time identifier can also be the number / index of the synchronization signal in the time arrangement.

[0564] Optionally, the beam identifier and the time identifier have a preset relationship. In this way, the terminal device derives the time identifier from the beam identifier according to the preset relationship.

[0565] Optionally, when the time identifier is the number / index of a time unit, the beam identifier can be arranged first according to the subset of the second combination of the synchronization signal, and then according to the number / index of the time unit. Then, the beam identifier modulo the number of subsets of the second combination can obtain the number / index of the time unit, that is, the time identifier.

[0566] Optionally, when the time identifier is the number / index of the synchronization signal in the time arrangement, the beam identifier can be arranged first according to the subset of the second combination of the synchronization signal, and then according to the number / index of the synchronization signal in the time arrangement. Then, taking the modulo of the beam identifier by the number of subsets of the second combination can obtain the number / index of the synchronization signal in the time arrangement, and this number / index is the time identifier.

[0567] Optionally, the number of subsets of the second combination can be given by a higher layer parameter or a preset value.

[0568] Optionally, there is a preset relationship between the beam identifier, the time identifier, and the subset identifier of the second combination, where the subset identifier of the second combination is the number / index of the subset of the second combination. In this way, the terminal device can derive the time identifier from the beam identifier and the subset identifier of the second combination according to this preset relationship.

[0569]

Method 3-7

[0570] In "Method 3-7", the terminal device can obtain it through the broadcast channel in the synchronization signal block.

[0571] V. Example Illustration of a Communication Device

[0572] The above mainly introduces the solution of the embodiment of the present application from the perspective of the method side. It can be understood that in order for the network device to implement the above functions, it includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that, combined with the units and algorithm steps of each example described in the embodiments disclosed in this article, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0573] The embodiment of the present application can divide the functional units of the network device according to the above method examples. For example, each functional unit can be divided corresponding to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of a software program module. It should be noted that the division of units in the embodiment of the present application is illustrative, only a logical function division, and there can be other division methods in actual implementation.

[0574] In the case of adopting an integrated unit, Figure 7 is a block diagram of the functional unit composition of a communication device according to an embodiment of the present application. The communication device 700 includes: a sending unit 701.

[0575] Optionally, the sending unit 701 may be a module unit for sending signals, data, information, sequences, etc., and no specific limitation is imposed thereon.

[0576] Optionally, the communication device 700 may further include a processing unit. The processing unit may be a processor or a controller, for example, it may be a baseband processor, a baseband chip, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of the present application. The processing unit may also be a combination for implementing computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0577] Optionally, the communication device 700 may further include a storage unit for storing the computer program code or instructions executed by the communication device 700. The storage unit may be a memory.

[0578] Optionally, the communication device 700 may be a chip or a chip module.

[0579] Optionally, the sending unit 701 may be integrated in other units.

[0580] For example, the sending unit 701 may be integrated in the communication unit.

[0581] It should be noted that the communication unit may be a communication interface, a transceiver, a transceiver circuit, etc.

[0582] Optionally, the sending unit 701 is used to execute any step performed by a network device / chip / chip module / transmitter of a network device, etc. in the above method embodiments. A detailed description is given below.

[0583] In specific implementation, the sending unit 701 is used to execute the steps in the above method embodiments, and when performing actions such as sending, other units may be selectively called to complete the corresponding operations. Since the present application involves multiple manners, a detailed description will be given separately from each manner below.

[0584] In "Situation A" of "Mode 1-1", the sending unit 701 is used to send a wake-up signal at a frequency-domain position or a time-domain position, where the frequency-domain position or the time-domain position corresponds to a first terminal device identification part.

[0585] It can be seen that since the frequency-domain position or the time-domain position can be corresponded to the first terminal device identification part, and different frequency-domain positions or different time-domain positions can correspond to different first terminal device identification parts, the network device can wake up terminal devices with different terminal device identifications at different frequency-domain positions or different time-domain positions. Correspondingly, terminal devices with different identifications can listen for their respective wake-up signals at different frequency-domain positions or different time-domain positions, thereby realizing frequency-division multiplexing of multiple wake-up signals.

[0586] In "Situation B" of "Mode 1-1", the sending unit 701 is used to send a wake-up signal at a subset of frequency-domain positions or a subset of time-domain positions, where the subset of frequency-domain positions corresponds to a first terminal device identification part, the subset of frequency-domain positions includes multiple frequency-domain positions, and the subset of time-domain positions includes multiple time-domain positions.

[0587] It can be seen that since the subset of frequency-domain positions or the subset of time-domain positions can be corresponded to the first terminal device identification part, and different subsets of frequency-domain positions or different subsets of time-domain positions can correspond to different first terminal device identification parts, the network device can wake up terminal devices with different terminal device identifications at different subsets of frequency-domain positions or different subsets of time-domain positions. Correspondingly, terminal devices with different identifications can listen for their respective wake-up signals at different subsets of frequency-domain positions or different subsets of time-domain positions, thereby realizing frequency-division multiplexing of multiple wake-up signals.

[0588] In "Situation a" of "Mode 1-2", the sending unit 701 is used to send a wake-up signal on a first combination, where the first combination is a combination of a frequency-domain position and a time-domain position; the frequency-domain position corresponds to a first terminal device identification part, and the time-domain position corresponds to a second terminal device identification part; or the first combination corresponds to a third terminal device identification part.

[0589] It can be seen that since the frequency-domain position can be associated with the first terminal device identification part, and the time-domain position can be associated with the second terminal device identification part, the network device can wake up terminal devices with different first terminal device identification parts and different second terminal device identification parts at different frequency-domain positions and different time-domain positions; correspondingly, the terminal devices can listen for wake-up signals at different frequency-domain positions and different time-domain positions. Or,

[0590] Since the first combination can be associated with the third terminal device identification part, the network device can wake up the terminal devices with different third terminal device identifications on different first combinations; correspondingly, the terminal devices can listen for wake-up signals on different first combinations.

[0591] In "Scenario b" of "Method 1-2", the sending unit 701 is used to send a wake-up signal on a subset of the first combinations, where the subset of the first combinations includes multiple first combinations; the first combination corresponds to the third terminal device identification part, and the first combination is a combination of a frequency domain position and a time domain position.

[0592] It can be seen that since the subset of the first combinations can be associated with the third terminal device identification part, the network device can wake up the terminal devices with different third terminal device identification parts on different subsets of the first combinations; correspondingly, the terminal devices can listen for wake-up signals on different subsets of the first combinations.

[0593] In "Method 2-1", the sending unit 701 is used to send a preamble part, where the preamble part is before the wake-up signals corresponding to one or more listening opportunities of the terminal device group; or, the preamble part is before the wake-up signals corresponding to one or more frequency domain positions of the terminal device group; or, the preamble part is before the wake-up signals corresponding to one or more time domain positions of the terminal device group; or, the preamble part is before the wake-up signals corresponding to one or more time-frequency domain positions of the device group.

[0594] It can be seen that since the wake-up signals of the terminal device groups divided by one or more listening opportunities / one or more time domain positions / one or more frequency domain positions share the same preamble part, this preamble part is equivalent to a "shared" preamble part. In this way, by sharing the preamble part, both the frequency deviation can be reduced and too many preamble parts can be avoided to save signaling / resource overhead.

[0595] In "Method 3-1", the sending unit 701 is used to send a synchronization signal in the frequency domain position.

[0596] In this way, the network device can send different synchronization signals in different frequency domain positions, where different synchronization signals correspond to different beams, so that the terminal devices can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead of the beam direction.

[0597] In "Method 3-2", the sending unit 701 is used to send a synchronization signal on a subset of the frequency domain positions.

[0598] In this way, the network device can send different synchronization signals on different subsets of frequency domain positions, where different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead of the beam direction.

[0599] In "Mode 3-3", the sending unit 701 is configured to send a synchronization signal at a time-frequency position.

[0600] In this way, the network device can send different synchronization signals on different time-frequency positions, where different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0601] In "Mode 3-4", the sending unit 701 is configured to send a synchronization signal on a subset of time domain positions, where the subset of time domain positions includes multiple time domain positions.

[0602] In this way, the network device can send different synchronization signals on different subsets of time-frequency positions, where different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0603] In "Mode 3-5", the sending unit 701 is configured to send a synchronization signal on a second combination.

[0604] In this way, the network device can send different synchronization signals on different combinations of frequency domain positions and time domain positions, where different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0605] In "Mode 3-6", the sending unit 701 is configured to send a synchronization signal on a subset of the second combination, where the subset of the second combination includes multiple second combinations.

[0606] In this way, the network device can send different synchronization signals on different subsets of the second combination, where different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0607] It should be noted that Figure 7 For the specific implementation of each operation in the above embodiments, reference can be made to the description in the method embodiments shown above, and details are not described herein again.

[0608] VI. Example Illustration of Another Communication Device

[0609] In the case of adopting an integrated unit, Figure 8 is a functional unit composition block diagram of another communication device according to an embodiment of the present application. The communication device 800 includes: a monitoring unit 801.

[0610] Optionally, the monitoring unit 801 can be a module unit for monitoring signals, data, information, etc., and no specific limitation is made thereto.

[0611] Optionally, the communication device 800 may further include a processing unit. The processing unit can be a processor or a controller. For example, it can be a baseband processor, a baseband chip, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logic blocks, modules, and circuits described in connection with the disclosure of the present application. The processing unit can also be a combination that realizes a computing function, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0612] Optionally, the communication device 800 may further include a storage unit for storing the computer program code or instructions executed by the communication device 800. The storage unit can be a memory.

[0613] Optionally, the communication device 800 can be a chip or a chip module.

[0614] Optionally, the monitoring unit 801 can be integrated in other units.

[0615] For example, the monitoring unit 801 can be integrated in the communication unit. It should be noted that the communication unit can be a communication interface, a transceiver, a transceiver circuit, etc.

[0616] Optionally, the monitoring unit 801 is used to execute any step performed by a terminal device / chip / chip module / receiver of a terminal device, etc. in the above method embodiment. The following is a detailed description.

[0617] In specific implementation, the monitoring unit 801 is used to execute the steps in the above method embodiment, and when performing actions such as sending, other units can be selectively called to complete the corresponding operations. The following is a detailed description. Since the present application involves multiple methods, the following will be described in detail from each method.

[0618] In "Situation A" of "Mode 1-1", the monitoring unit 801 is configured to monitor the wake-up signal in a frequency-domain position or a time-domain position, where the frequency-domain position or the time-domain position corresponds to a first terminal device identification part.

[0619] It can be seen that since the frequency-domain position or the time-domain position can be associated with the first terminal device identification part, and different frequency-domain positions or different time-domain positions can correspond to different first terminal device identification parts, the network device can wake up terminal devices with different terminal device identifications in different frequency-domain positions or different time-domain positions. Correspondingly, terminal devices with different identifications can monitor their respective wake-up signals in different frequency-domain positions or different time-domain positions, thereby achieving frequency-division multiplexing of multiple wake-up signals.

[0620] In "Situation B" of "Mode 1-1", the monitoring unit 801 is configured to monitor the wake-up signal in a subset of frequency-domain positions or a subset of time-domain positions, where the subset of frequency-domain positions corresponds to a first terminal device identification part, the subset of frequency-domain positions includes multiple frequency-domain positions, and the subset of time-domain positions includes multiple time-domain positions.

[0621] It can be seen that since the subset of frequency-domain positions or the subset of time-domain positions can be associated with the first terminal device identification part, and different subsets of frequency-domain positions or different subsets of time-domain positions can correspond to different first terminal device identification parts, the network device can wake up terminal devices with different terminal device identifications in different subsets of frequency-domain positions or different subsets of time-domain positions. Correspondingly, terminal devices with different identifications can monitor their respective wake-up signals in different subsets of frequency-domain positions or different subsets of time-domain positions, thereby achieving frequency-division multiplexing of multiple wake-up signals.

[0622] In "Situation a" of "Mode 1-2", the monitoring unit 801 is configured to monitor the wake-up signal in a first combination, where the first combination is a combination of a frequency-domain position and a time-domain position; the frequency-domain position corresponds to a first terminal device identification part, the time-domain position corresponds to a second terminal device identification part; or the first combination corresponds to a third terminal device identification part.

[0623] It can be seen that since the frequency-domain position can be associated with the first terminal device identification part, and the time-domain position can be associated with the second terminal device identification part, the network device can wake up terminal devices with different first terminal device identification parts and different second terminal device identification parts in different frequency-domain positions and different time-domain positions; correspondingly, the terminal device can monitor the wake-up signal in different frequency-domain positions and different time-domain positions. Or,

[0624] Since the first combination can be associated with the third terminal device identification part, the network device can wake up terminal devices with different third terminal device identifications on different first combinations; correspondingly, the terminal device can listen for wake-up signals on different first combinations.

[0625] In "Scenario b" of "Method 1-2", the listening unit 801 is configured to listen for wake-up signals on a subset of the first combinations, where the subset of the first combinations includes a plurality of first combinations; the first combination corresponds to the third terminal device identification part, and the first combination is a combination of a frequency domain position and a time domain position.

[0626] It can be seen that since the subset of the first combinations can be associated with the third terminal device identification part, the network device can wake up terminal devices with different third terminal device identification parts on different subsets of the first combinations; correspondingly, the terminal device can listen for wake-up signals on different subsets of the first combinations.

[0627] In "Method 2-1", the listening unit 801 is configured to receive a preamble part, where the preamble part is before the wake-up signals corresponding to one or more listening opportunities of the terminal device group; or, the preamble part is before the wake-up signals corresponding to one or more frequency domain positions of the terminal device group; or, the preamble part is before the wake-up signals corresponding to one or more time domain positions of the terminal device group; or, the preamble part is before the wake-up signals corresponding to one or more time-frequency domain positions of the device group.

[0628] It can be seen that since the wake-up signals of the terminal device groups divided by one or more listening opportunities / one or more time domain positions / one or more frequency domain positions share the same preamble part, this preamble part is equivalent to a "shared" preamble part. In this way, by sharing the preamble part, both the frequency deviation can be reduced and excessive preamble parts can be avoided to save signaling / resource overhead.

[0629] In "Method 3-1", the listening unit 801 is configured to send a synchronization signal in the frequency domain position.

[0630] In this way, the terminal device can receive different synchronization signals at different frequency domain positions, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead of the beam direction.

[0631] In "Method 3-2", the listening unit 801 is configured to send a synchronization signal on a subset of the frequency domain positions.

[0632] In this way, the terminal device can receive different synchronization signals on different subsets of frequency domain positions, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead of the beam direction.

[0633] In "Mode 3-3", the monitoring unit 801 is used to send synchronization signals on time-frequency positions.

[0634] In this way, the terminal device can receive different synchronization signals on different time-frequency positions, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0635] In "Mode 3-4", the monitoring unit 801 is used to send synchronization signals on a subset of time domain positions, and the subset of time domain positions includes multiple time domain positions.

[0636] In this way, the terminal device can receive different synchronization signals on different subsets of time-frequency positions, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0637] In "Mode 3-5", the monitoring unit 801 is used to send synchronization signals on the second combination.

[0638] In this way, the terminal device can receive different synchronization signals on different combinations of frequency domain positions and time domain positions, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0639] In "Mode 3-6", the monitoring unit 801 is used to send synchronization signals on a subset of the second combination, and the subset of the second combination includes multiple second combinations.

[0640] In this way, the terminal device can receive different synchronization signals on different subsets of the second combination, and different synchronization signals correspond to different beams, so that the terminal device can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead of the beam direction.

[0641] It should be noted that Figure 8 For the specific implementation of each operation in the above embodiments, reference can be made to the description in the method embodiments shown above, and details will not be elaborated here.

[0642] VII. Example Illustration of a Network Device

[0643] Please refer toFigure 9 , Figure 9 is a schematic structural diagram of a network device according to an embodiment of the present application. Among them, the network device 900 may include a processor 910, a memory 920, and a communication bus for connecting the processor 910 and the memory 920.

[0644] Optionally, the memory 920 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a compact disc read-only memory (CD-ROM). The memory 920 is used to store the program code executed by the network device 900 and the transmitted data.

[0645] Optionally, the network device 900 further includes a communication interface for receiving and sending data.

[0646] Optionally, the processor 910 may be one or more central processing units (CPUs). When the processor 910 is a central processing unit (CPU), the central processing unit (CPU) may be a single-core central processing unit (CPU) or a multi-core central processing unit (CPU).

[0647] Optionally, the processor 910 may be a baseband chip, a chip, a central processing unit (CPU), a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.

[0648] In specific implementation, the processor 910 in the network device 900 is used to execute the computer program or instruction 921 stored in the memory 920 and perform the corresponding steps of the method embodiment shown above, which will not be elaborated here.

[0649] VIII. Example description of a terminal device

[0650] Please refer to Figure 10 , Figure 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application. Among them, the terminal device 1000 may include a processor 1010, a memory 1020, and a communication bus for connecting the processor 1010 and the memory 1020.

[0651] Optionally, the memory 1020 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a compact disc read-only memory (CD-ROM). The memory 1020 is used to store the program code executed by the terminal device 1000 and the transmitted data.

[0652] Optionally, the terminal device 1000 further includes a communication interface for receiving and sending data.

[0653] Optionally, the processor 1010 can be one or more central processing units (CPUs). When the processor 1010 is a central processing unit (CPU), the central processing unit (CPU) can be a single-core central processing unit (CPU) or a multi-core central processing unit (CPU).

[0654] Optionally, the processor 1010 can be a baseband chip, a chip, a central processing unit (CPU), a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.

[0655] In a specific implementation, the processor 1010 in the terminal device 1000 is used to execute the computer program or instruction 1021 stored in the memory 1020 and perform the corresponding steps of the method embodiments shown above, which will not be elaborated here.

[0656] IX. Other Related Example Descriptions

[0657] Optionally, the above method embodiments can be applied to a network device or within a network device. That is to say, the execution subject of the above method embodiments can be a network device, a chip, a chip module, a module, or a transmitter of a network device, etc., and no specific limitation is made thereto.

[0658] An embodiment of the present application further provides a chip, including a processor, a memory, and a computer program or instruction stored on the memory. The processor executes the computer program or instruction to implement the steps described in the above method embodiments.

[0659] An embodiment of the present application further provides a chip module, including a transceiver component and a chip. The chip includes a processor, a memory, and a computer program or instruction stored on the memory. The processor executes the computer program or instruction to implement the steps described in the above method embodiments.

[0660] The embodiments of the present application further provide a computer-readable storage medium, which stores a computer program or instructions. When the computer program or instructions are executed, the steps described in the above method embodiments are implemented.

[0661] The embodiments of the present application further provide a computer program product, including a computer program or instructions. When the computer program or instructions are executed, the steps described in the above method embodiments are implemented.

[0662] The embodiments of the present application further provide a communication system, including the above network device and terminal device.

[0663] It should be noted that, for the above-mentioned various embodiments, for the sake of simple description, they are all expressed as a series of action combinations. Those skilled in the art should know that the present application is not limited by the described order of actions, because some steps in the embodiments of the present application can be performed in other orders or simultaneously. In addition, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions, steps, modules or units involved are not necessarily essential to the embodiments of the present application.

[0664] In the above embodiments, the descriptions of the various embodiments of the present application have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0665] The steps of the method or algorithm described in the embodiments of the present application can be implemented in a hardware manner or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a RAM, flash memory, ROM, EPROM, electrically erasable programmable read-only memory (EEPROM), register, hard disk, removable hard disk, CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a terminal device or a management device. Of course, the processor and the storage medium can also exist as discrete components in the terminal device or the management device.

[0666] Those skilled in the art should be able to realize that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that the computer can access or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a digital video disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0667] Each device and product described in the above embodiments includes various modules / units, which can be software modules / units, hardware modules / units, or partially software modules / units and partially hardware modules / units. For example, for each device and product applied to or integrated into a chip, each of the modules / units it includes can be implemented in the form of hardware such as circuits. Alternatively, at least some of the modules / units can be implemented in the form of a software program that runs on a processor integrated inside the chip, and the remaining (if any) part of the modules / units can be implemented in the form of hardware such as circuits. For each device and product applied to or integrated into a chip module, each of the modules / units it includes can be implemented in the form of hardware such as circuits. Different modules / units can be located in the same component (such as a chip, a circuit module, etc.) or different components of the chip module. Alternatively, at least some of the modules / units can be implemented in the form of a software program that runs on a processor integrated inside the chip module, and the remaining (if any) part of the modules / units can be implemented in the form of hardware such as circuits. For each device and product applied to or integrated into a terminal device, each of the modules / units it includes can be implemented in the form of hardware such as circuits. Different modules / units can be located in the same component (such as a chip, a circuit module, etc.) or different components inside the terminal device. Alternatively, at least some of the modules / units can be implemented in the form of a software program that runs on a processor integrated inside the terminal device, and the remaining (if any) part of the modules / units can be implemented in the form of hardware such as circuits.

[0668] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the embodiments of the present application. It should be understood that the above description is only the specific embodiments of the embodiments of the present application and is not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A communication method, characterized in that, Including: Sending a wake-up signal at a frequency-domain position or a time-domain position, where the frequency-domain position or the time-domain position corresponds to a first terminal device identification part; Or, Sending a wake-up signal on a subset of frequency-domain positions or a subset of time-domain positions, where the subset of frequency-domain positions or the subset of time-domain positions corresponds to a first terminal device identification part, the subset of frequency-domain positions includes multiple frequency-domain positions, and the subset of time-domain positions includes multiple time-domain positions.

2. A communication method, characterized in that, Including: Listening for a wake-up signal at a frequency-domain position or a time-domain position, where the frequency-domain position or the time-domain position corresponds to a first terminal device identification part; Or, Listening for a wake-up signal on a subset of frequency-domain positions or a subset of time-domain positions, where the subset of frequency-domain positions or the subset of time-domain positions corresponds to a first terminal device identification part, the subset of frequency-domain positions includes multiple frequency-domain positions, and the subset of time-domain positions includes multiple time-domain positions.

3. The method according to claim 1 or 2, characterized in that The first terminal device identification part corresponds to a frequency-domain position terminal device group or a time-domain position terminal device group; or, The first terminal device identification part corresponds to a subset of frequency-domain positions terminal device group or a subset of time-domain positions terminal device group.

4. The method according to claim 3, characterized in that The frequency-domain position terminal device group is a supergroup or a subgroup of the listening opportunity terminal device group; or, The time-domain position terminal device group is a supergroup or a subgroup of the listening opportunity terminal device group; or, The subset of frequency-domain positions terminal device group is a supergroup or a subgroup of the listening opportunity terminal device group; or, The subset of time-domain positions terminal device group is a supergroup or a subgroup of the listening opportunity terminal device group.

5. The method according to any one of claims 1-4, characterized in that, There are 2, 4, or 8 frequency-domain positions; or, There are 2, 4, or 8 time-domain positions.

6. A communication method, characterized in that, Including: Sending a wake-up signal on a first combination, where the first combination is a combination of a frequency-domain position and a time-domain position; Or, Sending a wake-up signal on a subset of the first combination, where the subset of the first combination includes multiple first combinations; The frequency-domain position corresponds to a first terminal device identification part, the time-domain position corresponds to a second terminal device identification part, and the first combination corresponds to a third terminal device identification part.

7. A communication method, characterized in that, Including: Listening for a wake-up signal on a first combination, where the first combination is a combination of a frequency-domain position and a time-domain position; Or, Listening for a wake-up signal on a subset of the first combination, where the subset of the first combination includes multiple first combinations; The frequency-domain position corresponds to a first terminal device identification part, the time-domain position corresponds to a second terminal device identification part, and the first combination corresponds to a third terminal device identification part.

8. The method according to claim 6 or 7, characterized in that, The first terminal device identification part corresponds to a frequency-domain position terminal device group.

9. The method according to claim 8, wherein The frequency-domain position terminal device group is a supergroup or a subgroup of the listening opportunity terminal device group.

10. The method according to claim 6 or 7, characterized in that, The second terminal device identification part corresponds to a time-domain position terminal device group.

11. The method according to claim 10, wherein The time-domain position terminal device group is a supergroup or a subgroup of the listening opportunity terminal device group.

12. The method according to claim 6 or 7, characterized in that, The third terminal device identification part corresponds to a time-frequency-domain position terminal device group.

13. The method according to claim 12, wherein The time-frequency domain position terminal device group is a supergroup of the listening opportunity terminal device group or a subgroup of the listening opportunity terminal device group.

14. The method according to claim 6 or 7, characterized in that, The first combination includes 4, 8, or 16.

15. A communication method, characterized in that, It includes: A preamble transmission part, where the preamble part is before the wake-up signal corresponding to one or more listening opportunity terminal device groups; Or, The preamble part is before the wake-up signal corresponding to one or more frequency domain position terminal device groups; or, The preamble part is before the wake-up signal corresponding to one or more time domain position terminal device groups; or, The preamble part is before the wake-up signal corresponding to one or more time-frequency domain position device groups.

16. A communication method, characterized in that, It includes: A preamble reception part, where the preamble part is before the wake-up signal corresponding to one or more listening opportunity terminal device groups; Or, The preamble part is before the wake-up signal corresponding to one or more frequency domain position terminal device groups; or, The preamble part is before the wake-up signal corresponding to one or more time domain position terminal device groups; or, The preamble part is before the wake-up signal corresponding to one or more time-frequency domain position device groups.

17. The method according to claim 15 or 16, characterized in that, There is a time interval between the preamble part and the first wake-up signal among the wake-up signals corresponding to one or more listening opportunity terminal device groups; or, There is a time interval between the preamble part and the first wake-up signal among the wake-up signals corresponding to one or more frequency domain position terminal device groups; or, There is a time interval between the preamble part and the first wake-up signal among the wake-up signals corresponding to one or more time domain position terminal device groups; or, There is a time interval between the preamble part and the first wake-up signal among the wake-up signals corresponding to one or more time-frequency domain position terminal device groups.

18. The method according to claim 17, characterized in that, The time interval is one or more orthogonal frequency division multiplexing (OFDM) symbols.

19. The method according to claim 17, wherein The time interval is configured by the network.

20. The method according to claim 17, wherein The time interval is not less than the minimum time interval reported by the terminal device.

21. The method according to any one of claims 15 - 20, characterized in that, The frequency domain resource of the preamble part is the frequency extension of the wake-up signal corresponding to one or more listening opportunity terminal device groups; or, The frequency domain resource of the preamble part is the frequency extension of the wake-up signal corresponding to one or more frequency domain position terminal device groups; or, The frequency domain resource of the preamble part is the frequency extension of the wake-up signal corresponding to one or more time domain position terminal device groups; or, The frequency domain resource of the preamble part is the frequency extension of the wake-up signal corresponding to one or more time-frequency domain position terminal device groups.

22. A communication method, characterized in that, It includes: Transmitting a synchronization signal at a frequency domain position corresponding to a beam identifier; or, Transmitting a synchronization signal on a subset of frequency domain positions, where the subset of frequency domain positions includes multiple frequency domain positions; or, Transmitting a synchronization signal at a time domain position corresponding to a beam identifier; or, Transmitting a synchronization signal on a subset of time domain positions, where the subset of time domain positions includes multiple time domain positions; or, Transmitting a synchronization signal on a second combination, where the second combination is a combination of a frequency domain position and a time domain position; or, Transmitting a synchronization signal on a subset of the second combination, where the subset of the second combination includes multiple second combinations.

23. A communication method, characterized in that, It includes: Receiving a synchronization signal at a frequency domain position corresponding to a beam identifier; Or, Receiving a synchronization signal on a subset of frequency-domain positions, the subset of frequency-domain positions including a plurality of frequency-domain positions; or, Receiving a synchronization signal at a time-domain position, the time-domain position corresponding to a beam identifier; or, Receiving a synchronization signal on a subset of time-domain positions, the subset of time-domain positions including a plurality of time-domain positions; or, Receiving a synchronization signal on a second combination, the second combination being a combination of a frequency-domain position and a time-domain position; or, Receiving a synchronization signal on a subset of the second combination, the subset of the second combination including a plurality of second combinations.

24. The method according to claim 22 or 23, characterized in that, The synchronization signal includes a low-power synchronization signal or a synchronization signal block.

25. A communication device, characterized in that, Including: A sending unit, configured to send a wake-up signal at a frequency-domain position or a time-domain position, the frequency-domain position or the time-domain position corresponding to a first terminal device identifier part; Or, A sending unit, configured to send a wake-up signal on a subset of frequency-domain positions or a subset of time-domain positions, the subset of frequency-domain positions or the subset of time-domain positions corresponding to a first terminal device identifier part, the subset of frequency-domain positions including a plurality of frequency-domain positions, and the subset of time-domain positions including a plurality of time-domain positions; or, A sending unit, configured to send a wake-up signal on a first combination, the first combination being a combination of a frequency-domain position and a time-domain position; the frequency-domain position corresponding to a first terminal device identifier part, and the time-domain position corresponding to a second terminal device identifier part; or, the first combination corresponding to a third terminal device identifier part; Or, A sending unit, configured to send a wake-up signal on a subset of the first combination, the subset of the first combination including a plurality of first combinations, the first combination corresponding to a third terminal device identifier part, and the first combination being a combination of the frequency-domain position and the time-domain position; Or, A sending unit, configured to send a preamble part, the preamble part being before a wake-up signal corresponding to a terminal device group in one or more listening opportunities; or, the preamble part being before a wake-up signal corresponding to a terminal device group in one or more frequency-domain positions; or, the preamble part being before a wake-up signal corresponding to a terminal device group in one or more time-domain positions; or, the preamble part being before a wake-up signal corresponding to a device group in one or more time-frequency-domain positions; Or, A sending unit, configured to send a synchronization signal at a frequency-domain position corresponding to a beam identifier; or send a synchronization signal on a subset of frequency-domain positions, the subset of frequency-domain positions including a plurality of frequency-domain positions; or send a synchronization signal at a time-domain position corresponding to a beam identifier; or send a synchronization signal on a subset of time-domain positions, the subset of time-domain positions including a plurality of time-domain positions; or send a synchronization signal on a second combination, the second combination being a combination of a frequency-domain position and a time-domain position; or send a synchronization signal on a subset of the second combination, the subset of the second combination including a plurality of second combinations.

26. A communication device, characterized in that, Including: A listening unit, configured to listen for a wake-up signal at a frequency-domain position or a time-domain position, the frequency-domain position or the time-domain position corresponding to a first terminal device identifier part; Or, A monitoring unit, configured to monitor a wake-up signal on a subset of frequency-domain positions or a subset of time-domain positions, where the subset of frequency-domain positions or the subset of time-domain positions corresponds to a first terminal device identification part, the subset of frequency-domain positions includes a plurality of frequency-domain positions, and the subset of time-domain positions includes a plurality of time-domain positions; or, A monitoring unit, configured to monitor a wake-up signal on a first combination, where the first combination is a combination of a frequency-domain position and a time-domain position; the frequency-domain position corresponds to a first terminal device identification part, and the time-domain position corresponds to a second terminal device identification part; or, the first combination corresponds to a third terminal device identification part; or, A monitoring unit, configured to monitor a wake-up signal on a subset of the first combination, where the subset of the first combination includes a plurality of first combinations, the first combination corresponds to a third terminal device identification part, and the first combination is a combination of the frequency-domain position and the time-domain position; Or, A monitoring unit, configured to receive a preamble part, where the preamble part is before a wake-up signal corresponding to a terminal device group in one or more monitoring opportunities; or, the preamble part is before a wake-up signal corresponding to a terminal device group in one or more frequency-domain positions; or, the preamble part is before a wake-up signal corresponding to a terminal device group in one or more time-domain positions; or, the preamble part is before a wake-up signal corresponding to a terminal device group in one or more time-frequency domain positions; Or, A monitoring unit, configured to receive a synchronization signal on a frequency-domain position corresponding to a beam identifier; or receive a synchronization signal on a subset of frequency-domain positions, where the subset of frequency-domain positions includes a plurality of frequency-domain positions; or receive a synchronization signal on a time-domain position corresponding to a beam identifier; or receive a synchronization signal on a subset of time-domain positions, where the subset of time-domain positions includes a plurality of time-domain positions; or receive a synchronization signal on a second combination, where the second combination is a combination of a frequency-domain position and a time-domain position; or receive a synchronization signal on a subset of the second combination, where the subset of the second combination includes a plurality of second combinations.

27. A network device, comprising a processor, a memory, and a computer program or instruction stored on the memory, characterized in that, The processor executes the computer program or instruction to implement the steps of the method according to any one of claims 1, 3-5, 6, 8-14, 15, 17-21, 22, 24.

28. A terminal device, comprising a processor, a memory, and a computer program or instruction stored on the memory, characterized in that, The processor executes the computer program or instruction to implement the steps of the method according to any one of claims 2-5, 7-14, 16-21, 23-24.

29. A chip, comprising a processor and a communication interface, characterized in that, The processor executes the steps of the method according to any one of claims 1-24.

30. A computer-readable storage medium, characterized in that, It stores a computer program or instruction, and when the computer program or instruction is executed, the steps of the method according to any one of claims 1-24 are implemented.

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