Communication method and apparatus, and network device and terminal device

Abstract

The present application relates to the technical field of communications. Disclosed are a communication method and apparatus, and a network device and a terminal device. The method comprises: a network device sending a wake-up signal at a frequency-domain location or a time-domain location, wherein the frequency-domain location or the time-domain location corresponds to a first terminal device identifier portion; and correspondingly, a terminal device monitoring the wake-up signal at the frequency-domain location or the time-domain location. It can be seen that since a frequency-domain location or a time-domain location can correspond to a first terminal device identifier portion, and different frequency-domain locations or different time-domain locations can correspond to different first terminal device identifier portions, the network device can, at different frequency-domain locations or different time-domain locations, wake up terminal devices having different terminal device identifiers. Correspondingly, terminal devices having different identifiers can monitor respective wake-up signals at different frequency-domain locations or different time-domain locations, thereby implementing frequency division multiplexing of a plurality of wake-up signals.

Description

Communication method and device, network equipment and terminal equipment

[0001] This invention claims priority to the prior application No. 202311872317.X filed on December 29, 2023, entitled “Communication Method and Apparatus, Network Equipment and Terminal Equipment”. The contents of the above-mentioned prior application are incorporated into this text by introduction. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication method and apparatus, network equipment, and terminal equipment. Background Art

[0003] In order to reduce the power consumption of terminal devices, a low power wake-up signal (LP-WUS, wake-up signal for short) mechanism is currently introduced.

[0004] Under the wake-up signal mechanism, the terminal device can only turn on a low-power wakeup signal receiver (LP-WUS receiver, LP-WUR, or LR) that is independent of the main radio (MR). In this way, the terminal device can turn off the main radio to achieve energy saving (reduced power consumption), and can also listen to the wake-up signal by the low-power wakeup signal receiver to wait for the network to wake up, achieving network accessibility. In short, by using the main radio and the low-power wakeup signal receiver, both energy saving and network accessibility can be achieved.

[0005] Under certain conditions, the bandwidth of the wake-up signal can be very small, and this is called a "narrowband wake-up signal." However, to maximize broadband bandwidth and improve resource utilization, multiple narrowband wake-up signals may need to support frequency division multiplexing. Summary of the Invention

[0006] The present application provides a communication method and apparatus, a network device, and a terminal device, in the hope of solving the problem of how to ensure communication under frequency division multiplexing that supports multiple narrowband wake-up signals.

[0007] The first aspect is a communication method of the present application, comprising:

[0008] A wake-up signal is sent at a frequency domain position or a time domain position, and the frequency domain position or the time domain position corresponds to the first terminal device identification part.

[0009] It can be seen that since the frequency domain position or the time domain position can correspond 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 monitor 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. Among them, the grouping of wake-up signals can be increased (the number of information bits carried can be increased) by frequency division multiplexing of multiple wake-up signals. When multiple narrowband wake-up signals are frequency-division multiplexed, the frequency position can also carry information, which is beneficial to reduce the information carried by the narrowband wake-up signal, and further helps to reduce the sequence length of the narrowband wake-up signal (time domain resource overhead).

[0010] The second aspect is a communication method of the present application, comprising:

[0011] The wake-up signal is monitored at a frequency domain position or a time domain position, where the frequency domain position or the time domain position corresponds to an identification portion of the first terminal device.

[0012] The third aspect is a communication method of the present application, comprising:

[0013] A wake-up signal is sent on a frequency domain position subset or a time domain position subset, wherein the frequency domain position subset or the time domain position subset corresponds to the first terminal device identification part, the frequency domain position subset includes multiple frequency domain positions, and the time domain position subset includes multiple time domain positions.

[0014] It can be seen that since the frequency domain position subset or the time domain position subset can correspond 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 monitor their respective wake-up signals on different frequency domain position subsets or different time domain position subsets, thereby realizing frequency division multiplexing of multiple wake-up signals. The grouping of wake-up signals can be increased (the number of information bits carried can be increased) by frequency division multiplexing of multiple wake-up signals. When multiple narrowband wake-up signals are frequency-division multiplexed, the frequency position can also carry information, which is beneficial to reduce the information carried by the narrowband wake-up signal, and further helps to reduce the sequence length of the narrowband wake-up signal (time domain resource overhead).

[0015] A fourth aspect is a communication method of the present application, comprising:

[0016] Listen for a wake-up signal on a frequency domain position subset or a time domain position subset, wherein the frequency domain position subset or the time domain position subset corresponds to the first terminal device identification part, the frequency domain position subset includes multiple frequency domain positions, and the time domain position subset includes multiple time domain positions.

[0017] A fifth aspect is a communication method of the present application, comprising:

[0018] 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;

[0019] 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,

[0020] The first combination corresponds to the third terminal device identification part.

[0021] 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 the 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 monitor the wake-up signal at different frequency domain positions and different time domain positions. Or,

[0022] Since the first combination can be associated with the third terminal device identification part, the network device can wake up the terminal device with different third terminal device identifications on different first combinations; correspondingly, the terminal device can monitor the wake-up signal on different first combinations.

[0023] A sixth aspect is a communication method of the present application, comprising:

[0024] monitoring a wake-up signal at a first combination, the first combination being a combination of a frequency domain position and a time domain position;

[0025] 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,

[0026] The first combination corresponds to the third terminal device identification part.

[0027] A seventh aspect is a communication method of the present application, comprising:

[0028] A wake-up signal is sent on a subset of the first combination, where the subset of the first combination includes multiple first combinations, where the first combination corresponds to a third terminal device identification part, and where the first combination is a combination of the frequency domain position and the time domain position.

[0029] 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 device 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.

[0030] An eighth aspect is a communication method of the present application, comprising:

[0031] The wake-up signal is monitored on a subset of the first combination, where the subset of the first combination includes multiple 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.

[0032] A ninth aspect is a communication method of the present application, comprising:

[0033] Sending a preamble, the preamble preceding a wake-up signal corresponding to one or more listening opportunity terminal device groups; or

[0034] The preamble portion precedes the wake-up signal corresponding to one or more frequency domain location terminal device groups; or,

[0035] The leading portion precedes the wake-up signal corresponding to one or more time domain location terminal device groups; or,

[0036] The leading part precedes the wake-up signal corresponding to one or more time-frequency domain position device groups.

[0037] As can be seen, since the wake-up signals of the terminal device groups divided by one or more monitoring opportunities / one or more time domain locations / one or more frequency domain locations share the same preamble, this preamble is equivalent to a "shared" preamble. In this way, by sharing the preamble, frequency deviation can be reduced and excessive preambles can be avoided, saving signaling and resource overhead.

[0038] A tenth aspect is a communication method of the present application, comprising:

[0039] receiving a preamble portion, the preamble portion preceding a wake-up signal corresponding to one or more listening opportunity terminal device groups; or,

[0040] The preamble portion precedes the wake-up signal corresponding to one or more frequency domain location terminal device groups; or,

[0041] The leading portion precedes the wake-up signal corresponding to one or more time domain location terminal device groups; or,

[0042] The leading part precedes the wake-up signal corresponding to one or more time-frequency domain position device groups.

[0043] In an eleventh aspect, a communication method of the present application includes:

[0044] Sending a synchronization signal at a frequency domain position, where the frequency domain position corresponds to a beam identifier; or

[0045] Sending a synchronization signal on a frequency domain position subset, where the frequency domain position subset includes a plurality of frequency domain positions; or,

[0046] Sending a synchronization signal at a time domain position, the time domain position corresponding to the beam identifier; or,

[0047] Sending a synchronization signal on a time domain position subset, where the time domain position subset includes a plurality of time domain positions; or,

[0048] 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,

[0049] A synchronization signal is sent on a subset of the second combinations, the subset of the second combinations comprising the plurality of second combinations.

[0050] In this way, network equipment can send different synchronization signals at different frequency domain positions. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead in the beam direction.

[0051] Alternatively, network equipment can send different synchronization signals on different subsets of frequency domain positions. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead in the beam direction.

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

[0053] Alternatively, network equipment can send different synchronization signals on different time-frequency position subsets, and different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead in the beam direction.

[0054] Alternatively, the network device can send different synchronization signals at different combinations of frequency domain positions and time domain positions. 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 in the beam direction.

[0055] Alternatively, 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 in the beam direction.

[0056] A twelfth aspect is a communication method of the present application, comprising:

[0057] receiving a synchronization signal at a frequency domain position corresponding to a beam identifier; or,

[0058] receiving a synchronization signal at a frequency domain position subset, where the frequency domain position subset includes a plurality of frequency domain positions; or,

[0059] receiving a synchronization signal at a time domain position corresponding to a beam identifier; or,

[0060] receiving a synchronization signal at a time domain position subset, wherein the time domain position subset includes a plurality of time domain positions; or,

[0061] receiving a synchronization signal at a second combination, where the second combination is a combination of a frequency domain position and a time domain position; or,

[0062] A synchronization signal is received on a subset of the second combinations, the subset of the second combinations comprising the plurality of second combinations.

[0063] In this way, the terminal device can receive different synchronization signals at different frequency domain positions. 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 in the beam direction.

[0064] Alternatively, the terminal device can receive different synchronization signals on different subsets of frequency domain positions. 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 in the beam direction.

[0065] Alternatively, the terminal device can receive different synchronization signals at different time-frequency positions. 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.

[0066] Alternatively, the terminal device can receive different synchronization signals on different time-frequency position subsets, 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.

[0067] Alternatively, the terminal device can receive different synchronization signals at different combinations of frequency domain positions and time domain positions. 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 in the beam direction.

[0068] Alternatively, 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 in the beam direction.

[0069] A thirteenth aspect is a communication device of the present application, comprising:

[0070] A sending unit is used to send 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 the first terminal device identification part.

[0071] A fourteenth aspect is a communication device of the present application, comprising:

[0072] The monitoring unit is used to monitor the 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 the first terminal device identification part.

[0073] A fifteenth aspect is a communication device of the present application, comprising:

[0074] A sending unit is used to send a wake-up signal on a frequency domain position subset or a time domain position subset, wherein the frequency domain position subset or the time domain position subset corresponds to the first terminal device identification part, the frequency domain position subset includes multiple frequency domain positions, and the time domain position subset includes multiple time domain positions.

[0075] A sixteenth aspect is a communication device of the present application, comprising:

[0076] A monitoring unit is used to monitor the wake-up signal on a frequency domain position subset or a time domain position subset, wherein the frequency domain position subset or the time domain position subset corresponds to the first terminal device identification part, the frequency domain position subset includes multiple frequency domain positions, and the time domain position subset includes multiple time domain positions.

[0077] A seventeenth aspect is a communication device of the present application, comprising:

[0078] 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;

[0079] 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,

[0080] The first combination corresponds to the third terminal device identification part.

[0081] In an eighteenth aspect, a communication device of the present application includes:

[0082] 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;

[0083] 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,

[0084] The first combination corresponds to the third terminal device identification part.

[0085] A nineteenth aspect is a communication device of the present application, comprising:

[0086] A sending unit is used to send 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 the third terminal device identification part, and the first combination is a combination of the frequency domain position and the time domain position.

[0087] In a twentieth aspect, a communication device of the present application includes:

[0088] A monitoring unit is used to monitor the 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 the third terminal device identification part, and the first combination is a combination of the frequency domain position and the time domain position.

[0089] In a twenty-first aspect, a communication device of the present application includes:

[0090] a sending unit, configured to send a preamble portion, wherein the preamble portion precedes a wake-up signal corresponding to one or more monitoring opportunity terminal device groups; or

[0091] The preamble portion precedes the wake-up signal corresponding to one or more frequency domain location terminal device groups; or,

[0092] The leading portion precedes the wake-up signal corresponding to one or more time domain location terminal device groups; or,

[0093] The leading part precedes the wake-up signal corresponding to one or more time-frequency domain position device groups.

[0094] In a twenty-second aspect, a communication device of the present application includes:

[0095] A monitoring unit is configured to receive a preamble portion, the preamble portion preceding a wake-up signal corresponding to one or more monitoring opportunity terminal device groups; or

[0096] The preamble portion precedes the wake-up signal corresponding to one or more frequency domain location terminal device groups; or,

[0097] The leading portion precedes the wake-up signal corresponding to one or more time domain location terminal device groups; or,

[0098] The leading part precedes the wake-up signal corresponding to one or more time-frequency domain position device groups.

[0099] In a twenty-third aspect, a communication device of the present application includes:

[0100] a sending unit, configured to send a synchronization signal at a frequency domain position corresponding to a beam identifier; or

[0101] Sending a synchronization signal on a frequency domain position subset, where the frequency domain position subset includes a plurality of frequency domain positions; or,

[0102] Sending a synchronization signal at a time domain position, the time domain position corresponding to the beam identifier; or,

[0103] Sending a synchronization signal on a time domain position subset, where the time domain position subset includes a plurality of time domain positions; or,

[0104] 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,

[0105] A synchronization signal is sent on a subset of the second combinations, the subset of the second combinations comprising the plurality of second combinations.

[0106] A twenty-fourth aspect is a communication device of the present application, comprising:

[0107] a monitoring unit, configured to receive a synchronization signal at a frequency domain position corresponding to a beam identifier; or

[0108] receiving a synchronization signal at a frequency domain position subset, where the frequency domain position subset includes a plurality of frequency domain positions; or,

[0109] receiving a synchronization signal at a time domain position corresponding to a beam identifier; or,

[0110] receiving a synchronization signal at a time domain position subset, wherein the time domain position subset includes a plurality of time domain positions; or,

[0111] receiving a synchronization signal at a second combination, where the second combination is a combination of a frequency domain position and a time domain position; or,

[0112] A synchronization signal is received on a subset of the second combinations, the subset of the second combinations comprising the plurality of second combinations.

[0113] In the twenty-fifth aspect, the steps in the method designed in the above-mentioned first aspect, third aspect, fifth aspect, seventh aspect, ninth aspect, or eleventh aspect are applied to network equipment.

[0114] In the twenty-sixth aspect, the steps in the method designed in the second aspect, fourth aspect, sixth aspect, eighth aspect, tenth aspect, or twelfth aspect are applied to a terminal device.

[0115] The twenty-seventh aspect is a network device of the present application, comprising a processor, a memory, and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps in the method designed in the above-mentioned first aspect, third aspect, fifth aspect, seventh aspect, ninth aspect, or eleventh aspect.

[0116] The twenty-eighth aspect is a terminal device of the present application, comprising a processor, a memory, and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps in the method designed in the above-mentioned second aspect, fourth aspect, sixth aspect, eighth aspect, tenth aspect, or twelfth aspect.

[0117] The twenty-ninth aspect is a chip of the present application, comprising a processor and a communication interface, wherein the processor executes the steps of the method designed in any one of the above-mentioned second to twelfth aspects.

[0118] The thirtieth aspect is a chip module of the present application, comprising a transceiver component and a chip, wherein the chip comprises a processor, wherein the processor executes the steps of the method designed in any one of the above-mentioned second to twelfth aspects.

[0119] In a thirty-first aspect, a computer-readable storage medium of the present application is provided, wherein the computer program or instructions are stored therein, and when the computer program or instructions are executed, the steps of the method according to any one of aspects 2 to 12 are implemented. For example, the computer program or instructions are executed by a processor.

[0120] A thirty-second aspect is a computer program product of the present application, comprising a computer program or instructions, wherein when the computer program or instructions are executed, the steps of the method according to any one of aspects 2 to 12 are implemented. For example, the computer program or instructions are executed by a processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0121] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art.

[0122] FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present application;

[0123] 2 to 6 are flowcharts of a communication method according to an embodiment of the present application;

[0124] FIG7 is a block diagram of functional units of a communication device according to an embodiment of the present application;

[0125] FIG8 is a block diagram of functional units of another communication device according to an embodiment of the present application;

[0126] FIG9 is a schematic structural diagram of a network device according to an embodiment of the present application;

[0127] FIG10 is a schematic structural diagram of a terminal device according to an embodiment of the present application. DETAILED DESCRIPTION

[0128] It should be understood that the terms "first," "second," and the like in the embodiments of the present application are used to distinguish between different objects, rather than to describe a specific order. In addition, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. 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 may also include steps or units that are not listed, or may include other steps or units inherent to these processes, methods, products, or devices.

[0129] The term "embodiment" as used in the embodiments of this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive with other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0130] In the embodiments of this application, "and / or" describes the relationship between associated objects and indicates 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; and B exists alone. A and B can be singular or plural.

[0131] In the embodiments of the present application, the symbol " / " can indicate that the preceding and following objects are in an "or" relationship. In addition, the symbol " / " can also represent a division sign, that is, performing a division operation. For example, A / B can mean A divided by B.

[0132] In the embodiments of the present application, "at least one item" or similar expressions refers to any combination of these items, including any combination of single items or plural items, and refers to one or more, and multiple refers to two or more. For example, at least one item (item) of a, b, or c can represent the following seven situations: a, b, c, a and b, a and c, b and c, a, b, and c. Among them, each of a, b, and c can be an element or a set containing one or more elements.

[0133] In the embodiments of this application, "equal to" can be used in conjunction with "greater than" and is applicable to the technical solution adopted when "greater than" is used, and can also be used in conjunction with "less than" and is applicable to the technical solution adopted when "less than" is used. When "equal to" is used in conjunction with "greater than", it should not be used in conjunction with "less than"; when "equal to" is used in conjunction with "less than", it should not be used in conjunction with "greater than".

[0134] In the embodiments of the present application, the terms "of", "corresponding / relevant", "corresponding", and "indicated" may sometimes be used interchangeably. It should be noted that when the distinction is not emphasized, the meanings they intend to express are consistent.

[0135] The "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 there is no limitation on this.

[0136] The “network” in the embodiments of the present application can be expressed as the same concept as the “system”, and the communication system is the communication network.

[0137] The following describes the relevant contents, concepts, meanings, technical issues, technical solutions, beneficial effects, etc. involved in the embodiments of this application.

[0138] 1. Communication systems, terminal equipment, and network equipment

[0139] 1. Communication system

[0140] This application can be applied to various communication systems to meet the needs of different communication scenarios.

[0141] Optionally, the present application can be applied to long term evolution (LTE) systems, advanced long term evolution (LTE-A) systems, new radio (NR) systems, evolved systems of NR systems, LTE-based access to unlicensed spectrum (LTE-U) systems, NR-based access to unlicensed spectrum (NR-U) systems, non-terrestrial networks (NTN) systems, universal mobile telecommunication systems (UMTS), 6th generation (6G) communication systems, etc.

[0142] Optionally, the present application can be applied to communication scenarios such as device to device (D2D) system, machine to machine (M2M) system, machine type communication (MTC), vehicle to vehicle (V2V) system, vehicle to everything (V2X) system, narrowband Internet of Things (NB-IoT) system, and passive Internet of Things communication.

[0143] Optionally, the present application can be applied to beamforming (beamforming), carrier aggregation (CA), dual connectivity (DC) or standalone (SA) deployment scenarios, etc.

[0144] Since the embodiments of the present application describe various embodiments in conjunction with terminal devices and network devices, the terminal devices and network devices involved will be described in detail below.

[0145] 2. Terminal equipment

[0146] A terminal device may be a device with transceiver functions, and may also be referred to as a terminal, passive device, Internet of Things device, user equipment (UE), remote terminal equipment (remote UE), relay equipment (relay UE), access terminal equipment, user unit, user station, mobile station, mobile station, remote station, mobile device, user terminal equipment, intelligent terminal equipment, wireless communication equipment, user agent or user device.

[0147] For example, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in unmanned autonomous driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0148] For another example, the terminal device may 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 capabilities, a computing device or other processing device 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 communication network (PLMN), etc., without specific limitation.

[0149] Optionally, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; can be deployed on the water surface (such as ships, etc.); can be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0150] Optionally, the terminal device may include a device with wireless communication function, such as a chip system, a chip, or a chip module. For example, the chip system may include a chip and may also include other discrete devices.

[0151] Optionally, the terminal device may be a chip, a chip module, a device, a unit, etc., without specific limitation.

[0152] 3. Network equipment

[0153] A network device may be a device with transceiver functions and may be used to communicate with a terminal device.

[0154] Optionally, the network device may be responsible for radio resource management (RRM), quality of service (QoS) management, data compression and encryption, data transmission and reception, etc. on the air interface side.

[0155] 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 a device in the RAN.

[0156] 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-connection architecture, a second node or secondary node (SN) in a dual-connection architecture, etc., without specific limitation.

[0157] Optionally, the network device may include a device in a core network (CN).

[0158] For example, the equipment in the CN may include an access and mobility management function (AMF), a user plane function (UPF), a session management function (SMF), etc.

[0159] 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.

[0160] Optionally, the network device may include a device that provides wireless communication functionality 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.

[0161] Optionally, the network device may be a transmission and reception point (TRP).

[0162] Optionally, the network device can communicate with an Internet Protocol (IP) network, such as the Internet, a private IP network, or other data networks.

[0163] Optionally, the network device may include an independent node to implement the functions of the above-mentioned base station, or may include two or more independent nodes to implement the functions of the above-mentioned base station. For example, the network device includes a centralized unit (CU) and a distributed unit (DU), such as a gNB-CU and a gNB-DU. Furthermore, in other embodiments of the present application, the network device may also include an active antenna unit (AAU). The CU implements 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 can implement some physical layer processing functions, RF processing, and related functions of the active antenna. Because RRC layer information ultimately becomes PHY layer information, or is converted from PHY layer information, 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 jointly by the DU and AAU. It is understood that network devices may include at least one of the CU, DU, and AAU. Furthermore, the CU may be classified as a RAN device, or as a core network device, without specific limitation.

[0164] Optionally, the network device can be any site in the multi-site 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, and there is no specific limitation on this. Among them, multi-site coherent joint transmission can be multiple sites coherent transmission, 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 also apply to this application, that is, this application does not limit the names of these parameters. The sites in multi-site coherent joint transmission can be remote radio heads (RRHs), TRPs, etc., and there is no specific limitation on this.

[0165] Optionally, the network device may be any site in the multi-site non-coherent joint transmission with the terminal device, or other sites outside the multi-site, or other network devices that perform network communication with the terminal device, and there is no specific limitation on this. Among them, multi-site non-coherent joint transmission can be multiple sites joint non-coherent transmission, or different data belonging to the same PDSCH are sent from different sites to the terminal device. The 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 the multi-site non-coherent joint transmission can be RRH, TRP, etc., and there is no specific limitation on this. The transmission scheme of multiple TRPs may include an S-DCI based M-TRP transmission scheme, and may also include an M-DCI based M-TRP transmission scheme.

[0166] It should be noted that the TRP of the present application is not limited to coherent joint transmission or incoherent joint transmission scenarios, but can also be applied to other scenarios without specific restrictions.

[0167] Optionally, the network device may be mobile, for example, a mobile device. Alternatively, 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. Alternatively, the network device may be a base station located on land or in water.

[0168] Optionally, the network device can provide services for a cell, and the terminal device in the cell can communicate with the network device using transmission resources (such as spectrum resources). The cell can be a macro cell, a small cell, a metro cell, a micro cell, a pico cell, or a femto cell.

[0169] Optionally, the network device of the embodiment of the present application may be a chip, a chip module, a device, a unit, etc., and there is no specific limitation on this.

[0170] 4. Example

[0171] The following is an exemplary description of the communication system in an embodiment of the present application.

[0172] For example, a network architecture of a communication system according to an embodiment of the present application may be referred to in FIG1 . As shown in FIG1 , a communication system 10 may include a network device 110 and a terminal device 120 .

[0173] It should be noted that FIG1 is merely an example of a network architecture of a communication system and does not constitute a limitation on the network architecture of the communication system of the embodiment of the present application.

[0174] For example, the communication system 10 may also include a server or other devices.

[0175] For another example, the communication system 10 may include other network devices in addition to the network device 110 .

[0176] For another example, the communication system 10 may include other terminal devices in addition to the terminal device 120 .

[0177] 2. The receiving process of the main radio

[0178] It should be noted that the main radio, also known as the main transceiver, overall transceiver, or regular transceiver, has a complete RF and baseband processing architecture. The main radio can be considered as a module for transmitting and receiving signals / channels other than the low-power wake-up signal.

[0179] During the primary radio's reception process, the primary radio may need to monitor the physical downlink control channel (PDCCH), perform radio resource management (RRM) measurements, process synchronization signal block bursts (SS / PBCH block bursts, SSB bursts), and perform paging early indication (PEI) detection. However, the primary radio typically consumes significant power, for example, due to the transition power required to wake up the terminal device from deep sleep, monitor paging, perform RRM measurements, and detect PEI.

[0180] Paging-related PDCCH

[0181] Generally speaking, in the RRC_IDLE state or the RRC_INACTIVE state, a terminal device needs to monitor the paging-related PDCCH, also known as Type 2-PDCCH. The radio network temporary identity (RNTI) of the paging-related PDCCH is P-RNTI, and the downlink control information (DCI) format used is DCI format 1-0.

[0182] When the terminal device detects the paging-related PDCCH (CRC is successfully descrambled using the P-RNTI), the terminal device can parse the DCI. The DCI may contain a short message to enable the terminal device to obtain warning information or perform system information updates. In addition, the DCI may also contain scheduling information to enable the terminal device to receive the paging-related physical downlink shared channel (PDSCH), thereby obtaining the paging message and further initiating a random access process to enter the connected state (RRC_CONNECTED state).

[0183] The functions of paging messages are as follows:

[0184] (1) Send a call request to a terminal device in the RRC_IDLE state;

[0185] (2) Notifying a terminal device in the RRC_IDLE state, RRC_INACTIVE state, or RRC_CONNECTED state that system information has changed;

[0186] (3) Instruct the terminal device to start receiving earthquake and tsunami warning system (ETWS) primary notifications and / or ETWS secondary notifications; instruct the terminal device to start receiving commercial mobile alert system (CMAS) notifications.

[0187] In addition, before the terminal device obtains the paging message, the terminal device needs to use a reference signal (eg, SSB) to complete time-frequency synchronization and complete automatic gain control (AGC) adjustment.

[0188] The monitoring timing of the paging-related PDCCH may be configured by a search space set (SSS).

[0189] A terminal device in the RRC_IDLE state or RRC_INACTIVE state can use the discontinuous reception (DRX) mechanism to receive paging messages to reduce power consumption. A DRX cycle can include at least one paging frame (PF).

[0190] A PF may be a radio frame or a system frame, which may include one or more paging occasions (PO) or a PO starting point.

[0191] Among them, the PO can be used to determine the starting point of the monitoring opportunity within the PF, can indicate the time domain position of the paging-related PDCCH, can be used to transmit 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 paging-related PDCCH monitoring opportunities. The paging-related PDCCH monitoring opportunity can also be called the paging PDCCH monitoring occasion (PMO). Therefore, a PO can contain multiple PMOs, or a PO can be composed of a group of PMOs.

[0192] Among them, PMO is a plurality of monitoring opportunities in sequence starting from the starting point, and PMO is associated one-to-one with the SSB actually sent.

[0193] Among them, the terminal device can determine the location of the PF or PO to which it belongs based on its own device identifier (UE_ID).

[0194] It should be noted that the PO in the embodiment of the present application can be understood as either a paging opportunity or a terminal subgroup (UE subgroup) corresponding to the PO or a terminal group (UE group) corresponding to the PO. The terminal subgroup (terminal group) corresponding to the PO can be understood as a set consisting of terminals corresponding to / mapped to / associated with the same PO. One PO can correspond to one terminal subgroup (terminal group), and there is no specific limitation on this.

[0195]

RRM measurement

[0196] In the RRC_IDLE state or the RRC_INACTIVE state, the terminal device needs to perform periodic RRM measurements, where the RRM measurements may include serving cell measurements and neighboring cell measurements.

[0197] Neighboring cell measurements may include:

[0198] The network device gives a given frequency point, and the terminal device can search for cells and perform measurements at this frequency point; or,

[0199] The network device provides a given frequency and physical cell ID (PCI), and the terminal device can use the PCI to search for and measure cells at the frequency; or

[0200] The network equipment does not assign a frequency point or PCI, but the terminal equipment can independently search for and measure cells.

[0201] Neighbor cell measurements can be divided into intra-frequency measurements and inter-frequency measurements.

[0202] For example, if the center frequency and subcarrier spacing of the SSB in the measurement object of the neighboring cell are the same as those of the SSB in the serving cell, then the measurement is a co-frequency measurement.

[0203] For example, if the center frequency or subcarrier spacing of the SSB in the measurement object of the neighboring cell is different from that of the SSB in the serving cell, then the measurement is an inter-frequency measurement.

[0204] In the RRC_IDLE or RRC_INACTIVE state, a terminal device generally needs to perform an RRM measurement of the serving cell within a paging cycle. The paging cycle is also called a DRX cycle or an idle state DRX (I-DRX) cycle.

[0205] In summary, in the RRC_IDLE state or the RRC_INACTIVE state, monitoring the paging-related PDCCH and performing RRM measurements are the main tasks of the terminal device.

[0206] Paging Early Indication (PEI)

[0207] In order to monitor the paging-related PDCCH and perform RRM measurements, network equipment generally needs to wake up the paging terminal device from deep sleep in advance to process three synchronization signal block bursts (SS / PBCH block bursts, SSB bursts) to achieve a certain time-frequency synchronization to monitor the paging-related PDCCH and perform RRM measurements at the same time.

[0208] In the process of monitoring the paging-related PDCCH, in order to avoid unnecessary monitoring and save power consumption of the terminal device, the network device can configure the PEI in the RRC_IDLE state or RRC_INACTIVE state. The PEI can be used to indicate whether the terminal device needs to continue monitoring the paging-related PDCCH to achieve the purpose of saving power consumption. The PEI can be downlink control information or sequence, etc.

[0209] When configured with PEI, the terminal device can wake up from deep sleep to process 1 SSB burst in order to achieve a certain time and frequency synchronization to detect PEI.

[0210] If the PEI indicates that it is necessary to continue to monitor the monitoring opportunity of the paging-related PDCCH, the terminal device continues to process the remaining 2 SSB bursts and continues to monitor the paging-related PDCCH.

[0211] If the PEI indicates that there is no need to continue monitoring the monitoring timing of the paging-related PDCCH, the terminal device returns to deep sleep.

[0212] At a group paging rate of 10%, the probability that the terminal device needs to monitor the paging-related PDCCH is 10%. Therefore, at a 10% probability, the terminal device needs to process 3 SSB bursts, monitor the paging-related PDCCH, and perform RRM measurements. At a 90% probability, the terminal device only needs to process 1 SSB burst and perform RRM measurements. Therefore, at a 90% probability, the terminal device processes fewer signals / channels, wakes up for a shorter time (if it does not process signals / channels after waking up from deep sleep, it is in light sleep), and consumes less power.

[0213] In summary, by using PEI, terminal equipment can achieve the goal of saving power.

[0214] 3. Low-power wake-up signal, low-power wake-up signal receiver, timing error, and synchronization signal

[0215]

Low power wake-up signal

[0216] The network device can wake up the terminal device from a deep sleep state, such as power saving mode (PSM), by sending a low-power wake-up signal.

[0217] Accordingly, the terminal device determines whether it needs to exit the deep sleep state and enter the RRC_IDLE state, RRC_INACTIVE state or RRC_CONNECTED state by monitoring / detecting the low-power wake-up signal. In this way, the terminal device can enter the deep sleep state and be awakened by the network through the low-power wake-up signal.

[0218] For simplicity of description, the “low-power wake-up signal” in this application may be referred to as “wake-up signal (WUS)”. In other words, the “low-power wake-up signal” mentioned in this application may be referred to as “wake-up signal”.

[0219]

Low-power wake-up signal receiver

[0220] To reduce the power consumption of the main radio's transition from deep sleep to wake-up and the power consumption of the detection signal, a low-power wake-up signal receiver independent of the main radio can be used to detect a low-power wake-up signal.

[0221] The design of a low-power wake-up signal must ensure that the receiver can receive the signal with low power consumption while also meeting sensitivity requirements or signal-to-noise ratio requirements at a low error rate. Compared to a non-low-power wake-up signal, a low-power wake-up signal can enable a low-power wake-up signal receiver to receive the wake-up signal with lower power consumption at the same latency, or receive the wake-up signal with lower latency at the same power consumption.

[0222] It should be noted that the low-power wake-up signal receiver can be regarded as a module / unit / device, etc., which is mainly used to receive signals / channels related to the low-power wake-up signal, and is often independent of the main radio.

[0223] The low power wake-up signal receiver may also be called a low power receiver (low power receiver), a wake-up signal receiver (WUS receiver), etc.

[0224] In certain scenarios or at certain times, the terminal device can simply turn on a low-power wake-up signal receiver independent of the main radio. This allows the terminal device to both turn off the main radio to save energy (reduce power consumption) and use the low-power wake-up signal receiver to listen for low-power wake-up signals and wait for network wake-up, thus achieving network accessibility. In this way, using both the main radio and the low-power wake-up signal receiver allows for both energy saving and network accessibility.

[0225] In addition, in certain scenarios or at certain times, the low-power wake-up signal receiver can monitor the low-power wake-up signal at a higher frequency, so that the terminal device can be woken up with a lower latency. Therefore, the low-power wake-up signal receiver also has the potential benefit of reducing latency.

[0226] For simplicity of description, the low-power wake-up signal receiver in this application may be referred to as a low-power receiver (LPR). In other words, the "low-power wake-up signal receiver" mentioned in this application may be collectively referred to as a "low-power receiver" or "wake-up signal receiver." The following description uses the low-power receiver as an example.

[0227] On-off keying (OOK) symbol generation for wake-up signals

[0228] In order to reduce the complexity of the low-power receiver, the wake-up signal may adopt an on-off keying (OOK) modulation method.

[0229] This is because OOK modulation only has amplitude information, not frequency or phase information, and the amplitude has only two amplitudes: high (or 1) and low (or 0). For OOK, the reception method can be envelope detection, which can directly accumulate the amplitude of the received signal. Due to its simplicity, it also requires low power. In this way, the low-power receiver in the terminal device can be simplified to detect the energy of the modulation symbol (rather than the amplitude / phase of the modulation symbol). As long as the modulation symbol energy exceeds a certain threshold, it can be judged as on; otherwise, it is judged as off.

[0230] Since an OOK symbol has only two amplitudes, high (or 1) and low (or 0), an OOK symbol can also be called an OOK bit, an OOK chip, or an OOK pulse. This application does not distinguish between these terms and only uses OOK symbol instead.

[0231] For OOK in a multi-tone waveform or a multi-carrier waveform, an OOK symbol may be a multi-tone or multi-carrier time domain symbol, such as an orthogonal frequency division multiplexing (OFDM) time domain symbol.

[0232] For OOK in multi-tone or multi-carrier waveforms, at the transmitter (e.g., a network device), a single OOK symbol can be mapped to multiple subcarriers. These subcarriers, along with subcarriers from other signals / channels, form the full subcarriers of an OFDM symbol. This allows low-power wake-up signals to coexist with other signal channels in the same OFDM symbol. Furthermore, the subcarriers mapped to an OOK symbol can be random or pre-defined.

[0233] Multiple OOK symbols can be mapped to one OFDM symbol. The mapping can be done in the following two ways:

[0234] ◆Sequence direct modulation method

[0235] For OOK symbols with high (or 1) amplitude, sequence 1 (such as the Zidoff-Chu sequence, or ZC sequence) is used to map them to a subset of subcarriers (the OFDM symbol corresponds to a subset of all subcarriers). For OOK symbols with low (or 0) amplitude, sequence 0 (such as an all-zero sequence) is used to map them to a subset of subcarriers.

[0236] In this approach, for a wake-up signal, one OFDM symbol can contain one OOK symbol. It's worth noting that the subcarrier subset to which the OOK symbol is mapped can be selected with a higher subcarrier spacing, so that one OOK symbol exists within one OFDM symbol used for data. In this case, the OOK waveform / modulation can be referred to as an "OOK-1 waveform / modulation."

[0237] In addition, to accommodate multiple OOK symbols within a single OFDM symbol, multiple OOK symbols can be mapped to multiple subcarrier subsets, allowing them to fit within the current OFDM symbol. A subcarrier subset is called a segment, and multiple OOK symbols are mapped to multiple segments. In this case, the OOK waveform / modulation is referred to as an "OOK-2 waveform / modulation."

[0238] ◆Precoding-based method, also known as waveform shaping-based method

[0239] All OOK symbols corresponding to an OFDM symbol are processed one by one. Each OOK symbol corresponds to a sequence (which can be adopted or repeated). The sequence is mapped to a subset of symbols of the precoded input. After precoding (such as DFT precoding and quasi-inverse-based precoding), waveform shaping (such as frequency domain truncation) is performed, and then the output is mapped to the OFDM subcarrier.

[0240] The number of OOK symbols corresponding to one OFDM symbol is a crucial parameter. Generally speaking, one OFDM symbol can correspond to M OOK symbols, where M > 1 and can be a value such as 8 or 4. In this case, the OOK waveform / modulation is referred to as an "OOK-4 waveform / modulation."

[0241] [Preamble part of the wake-up signal]

[0242] For the reception of the wake-up signal, the low-power receiver needs to first deal with the timing deviation problem. Generally speaking, a preamble (or first part) can be placed at the beginning of the wake-up signal.

[0243] In this way, the low-power receiver can detect the preamble using a search window. Upon detecting the preamble, the low-power receiver can determine the start position of the message portion of the wake-up signal. Determining the start position of the preamble can also be considered the process of obtaining timing information (correcting timing deviation).

[0244] Optionally, the preamble part may be regarded as a reference signal (RS), a reference signal of a wake-up signal, or a reference signal of a message part.

[0245]

Message part of the wake-up signal

[0246] The message portion of the wake-up signal may refer to a portion following the preamble portion of the wake-up signal, and the message portion may be referred to as a data portion or a second portion.

[0247] Optionally, the message part may 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 the cell identity information to reduce inter-cell interference.

[0248] Optionally, the wake-up signal may also have no leading portion, that is, the wake-up signal only has a message portion. In this case, the message portion of the wake-up signal is equivalent to the wake-up signal.

[0249] How wake-up signals carry information

[0250] The wake-up signal can carry information.

[0251] Optionally, the wake-up signal may carry information in the form of a channel (or coded bits), including steps such as repetition (upsampling), channel coding (such as Manchester coding), adding a cyclic redundancy check (CRC), modulation and / or waveform generation.

[0252] Optionally, the wake-up signal may carry information in the form of a signal (or sequence), including steps such as sequence generation, modulation and / or waveform generation.

[0253] In the channel-based approach, the wake-up signal can carry more information (e.g., more bits due to repetition or upsampling). This reduces the probability of the low-power receiver waking up the main radio, allowing the main radio to remain in sleep mode longer, thereby reducing the power consumption of the terminal device.

[0254] Compared with the sequence method, although the channel method can carry more bits, it also leads to disadvantages such as poor coverage and high system overhead under the same system overhead.

[0255] In addition, when using a channel approach, the low-power receiver can only use envelope detection to detect the wake-up signal, and cannot use sequence detection. This is because if the low-power receiver treats the wake-up signal as a sequence (which may include CRC) and uses sequence detection to detect the low-power wake-up signal, this will lead to too many possible sequences and excessive detection complexity.

[0256] Because envelope detection can have poor performance, achieving coverage targets can incur significant wake-up signal overhead. Furthermore, the channel approach requires a CRC, which also increases the wake-up signal overhead. However, the channel approach is still viable in certain scenarios, such as within factory buildings, where coverage can be minimal and system overhead is less critical than the power consumption of the terminal device.

[0257] It can be seen that when adopting the channel method, it is necessary to focus on how to improve coverage.

[0258] Based on this, in order to improve coverage, the present application may adopt encoding and / or repetition, and may combine encoding and repetition by encoding first and then repeating.

[0259] To provide flexibility, network devices can configure different wake-up signal encoding code lengths for different scenarios and / or terminal devices. Longer encoding code lengths increase the complexity of the low-power receiver, meaning more soft bits need to be buffered. Shorter encoding code lengths reduce the complexity of the low-power receiver, meaning fewer soft bits need to be buffered.

[0260] To introduce flexibility, network devices can configure different repetition times for different scenarios and / or terminal devices. A higher repetition time increases the complexity of the low-power receiver, as reflected by a greater number of soft bit combinations. A lower repetition time increases the complexity of the low-power receiver, as reflected by a lower number of soft bit combinations.

[0261] To introduce flexibility, network devices can configure different wake-up signal lengths for different scenarios and / or terminal devices. A longer length increases the complexity of the low-power receiver, meaning more soft bits need to be buffered. A shorter length reduces the complexity of the low-power receiver, meaning fewer soft bits need to be combined.

[0262] [Detection method of low-power receiver]

[0263] Low-power receivers can use envelope detection to detect the wake-up signal, such as detecting each OOK symbol. This approach offers lower performance, lower complexity, and lower receiver power consumption.

[0264] Low-power receivers can also use sequence detection to detect the wake-up signal, such as correlating the received sequence with the local sequence to detect the OOK sequence. This approach has higher performance but higher complexity and consumes more power.

[0265] [Detection timing of low-power receiver]

[0266] It should be noted that low-power receivers can have the following two types of detection opportunities:

[0267] ◆Timing of the first type of testing

[0268] The first type of detection opportunity may be that the low power receiver periodically detects the low power wake-up signal.

[0269] With this method, a single detection of a low-power wake-up signal consumes more power, but due to the long cycle (the low-power receiver only needs to wake up once during each long cycle to detect), the average power consumption is low. Furthermore, because of the need to periodically wake up for detection, the low-power receiver requires accurate time synchronization. This cycle can be called the duty cycle or detection cycle or detection periodicity.

[0270] ◆Second type of testing timing

[0271] The second type of detection opportunity may be that the low-power receiver can always be in a state of detecting the low-power wake-up signal (also called a stand-by state).

[0272] In this method, the power consumption of a single detection of the wake-up signal is low, and even though the detection is always on, the average power consumption is also low. Because of the constant detection, the low-power receiver does not need accurate time synchronization.

[0273] [Low-power receiver architecture]

[0274] For OOK modulation, low-power receivers can use envelope detection architectures. The envelope detection architectures can include the following:

[0275] The first architecture is based on a zero intermediate frequency (zero IF) envelope detection architecture, which can be completed in the baseband.

[0276] The second architecture is based on a low intermediate frequency (low IF) envelope detection architecture, where the envelope detection can be performed in the intermediate frequency.

[0277] The third architecture is an RF-based envelope detection architecture, which can be completed in the RF.

[0278] The fourth architecture is a receiver architecture for OFDM waveforms. This architecture features both I / Q channels and can detect at least sequences based on OFDM waveforms. Since OOK waveforms are multi-tone or multi-carrier OOK waveforms, they can also be detected using a receiver architecture for OFDM waveforms. Due to the higher complexity of OFDM receiver architectures, such as the dual I / Q channels and high sampling rate, OFDM receiver architectures consume slightly higher power.

[0279] The above-mentioned various architectures can realize the two types of detection timings in the aforementioned “detection timing of a low-power receiver”.

[0280] Time-Frequency Deviation and Synchronization Signals for Low-Power Receivers

[0281] Frequency drift will be reflected as frequency deviation, causing the low-power receiver to have a frequency deviation, which can be simply referred to as frequency deviation.

[0282] Optionally, the frequency deviation size can be a fraction of a subcarrier spacing, a subcarrier spacing, or multiple subcarrier spacings.

[0283] Frequency deviation can cause inter-subcarrier interference (ICI) in the OFDM sequence. For receiver architectures designed for OFDM waveforms, this can degrade performance when detecting the OFDM sequence to detect OOK waveforms in multi-tone or multi-carrier waveforms. Frequency deviation can also cause inter-frequency segment interference, which can degrade performance when detecting OOK waveforms with multiple frequency segments. Frequency deviation can also cause adjacent channel interference, which can degrade performance when detecting OOK waveforms that coexist with other signals / channels.

[0284] Frequency drift accumulates over a period of time and becomes timing deviation, causing a timing deviation in the low-power receiver, which can be referred to as time deviation.

[0285] Optionally, the timing offset size may be a portion of an OOK symbol, an OOK symbol, or multiple OOK symbols.

[0286] 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 (where the low-power receiver periodically detects the wake-up signal), if the detection period is too long, the accumulated timing deviation will be too large. When the timing deviation exceeds a certain level (such as exceeding a certain number of OOK symbols), the demodulation and decoding performance of the low-power receiver may drop sharply, manifesting as a large miss detection rate (MDR) and / or false alarm rate (FAR).

[0287] 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, the accumulated timing deviation is too large. When the timing deviation exceeds a certain level (such as more than 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 long, resulting in excessive delay.

[0288] Based on this, the low-power receiver can be synchronized through a periodic synchronization signal to reduce frequency deviation and / or timing deviation.

[0289] Optionally, the synchronization signal may be modulated using OOK.

[0290] Alternatively, the synchronization signal can be sent as a frequency domain sequence (called OFDM modulation or waveform) instead of OOK modulation. Since the frequency domain sequence appears as a filtered time domain sequence in the time domain, the receiver can use time domain correlation (i.e., correlating the received time domain signal with a time domain version of the local sequence or part of the sequence).

[0291] It should be noted that the time-domain correlation method is equivalent to the frequency-domain dot product method (i.e., performing a dot product of the received frequency-domain signal with the frequency-domain version of the local sequence or portion of the sequence). When the synchronization signal uses OOK modulation, it can be a preset OOK symbol sequence, unlike the wake-up signal. Alternatively, the synchronization signal can be bit-encoded and then modulated into OOK symbols, similar to the wake-up signal. When the synchronization signal is bit-encoded and then modulated, it can include a preamble and a message portion, similar to the wake-up signal.

[0292] [Preamble of synchronization signal]

[0293] For receiving synchronization signals, low-power receivers also need to deal with the timing deviation problem first. Generally speaking, a preamble can be placed at the beginning of the synchronization signal.

[0294] In this way, the low-power receiver can detect the preamble using a search window. Once the preamble is detected, the start position of the message portion (the portion following the preamble) can be determined. Determining the start position of the preamble can also be considered the process of obtaining timing information (correcting timing deviation).

[0295]

Message part of synchronization signal

[0296] The message portion of the synchronization signal may carry some information, such as cell ID information, which may enable the low-power receiver to determine the current cell to reduce inter-cell interference.

[0297] Because the message portion of the synchronization signal is relatively fixed and the number of possible synchronization signal sequences is relatively small, low-power receivers can still detect the synchronization signal as a sequence. In short, whether the synchronization signal is a preset OOK symbol sequence or encoded bit by bit and then modulated into OOK symbols, low-power receivers can perform sequence detection.

[0298] How synchronization signals carry information

[0299] The synchronization signal can also carry information.

[0300] Optionally, the synchronization signal may carry information in a channel (or coded bit) manner, including steps such as repetition, channel coding (such as Manchester coding), adding a cyclic redundancy check (CRC), modulation and / or waveform generation.

[0301] Optionally, the synchronization signal may carry information in the form of a signal (or sequence), including steps such as sequence generation, modulation and / or waveform generation.

[0302] It should be noted that the "repetition of the synchronization signal" in this application can be understood as the repetition or upsampling of the information carried by the synchronization signal or the synchronization signal itself (including the preamble part, the message part and / or the CRC information, etc.) in order to improve the decoding performance of the synchronization signal and improve the coverage.

[0303] For example, when the information carried by the synchronization signal includes 4 bits, the 4 bits can be repeated or upsampled. The repetition or upsampling can be to repeat the 4 bits 4 times (that is, the wake-up signal is repeated 4 times), and finally 16 bits are obtained.

[0304] For another example, when the synchronization signal itself includes 32 bits (such as 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 synchronization signal is repeated 4 times), and finally 128 bits are obtained.

[0305] Optionally, the information carried by the synchronization signal may be information bits or sequences before encoding, or information or bits after encoding, and there is no specific limitation on this.

[0306] 4. A Communication Method

[0307] 1. Description

[0308] Combined with the content of the above "On-off Keying Symbol Generation of Wake-up Signal", the OOK-1 waveform / modulation has the advantages of being transmitter-friendly, resistant to Inter-Symbol Interference (ISI), and resistant to interference caused by frequency offset; the OOK-4 waveform / modulation has the advantages of being easy to combine with Manchester code (M can represent the length of Manchester code), Manchester code rate improvement (power boosting), support for long Manchester code, and resistance to interference caused by frequency offset.

[0309] In the 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, so 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 in the OOK-4 waveform / modulation, there are 2 OOK symbols in one OFDM symbol, while in the OOK-1 waveform / modulation, there is 1 OOK symbol in one OFDM symbol. When both use Manchester code, in the OOK-4 waveform / modulation, one OFDM symbol contains one Machester code codeword (2 bits); while in the OOK-1 waveform / modulation, two OFDM symbols contain one Machester code codeword (2 bits). It is worth noting that the OOK-1 waveform / modulation is equivalent to the OOK-4 waveform / modulation when M = 1.

[0310] In summary, the OOK-1 waveform / modulation and the OOK-4 waveform / modulation with a smaller M value are both suitable for wake-up signals and are similar.

[0311] Because there is only one OOK symbol in one OFDM symbol under the OOK-1 waveform / modulation, and because there are fewer (e.g., M = 2) OOK symbols in one OFDM symbol under the OOK-4 waveform / modulation when M is smaller, the system overhead is very small, and the corresponding wake-up signal bandwidth is also small. In this case, the present application may refer to such a wake-up signal as a "narrowband wake-up signal."

[0312] For narrowband wake-up signals, multiple narrowband wake-up signals can be frequency-division multiplexed to maximize broadband bandwidth and improve resource utilization. Furthermore, when multiple narrowband wake-up signals are frequency-division multiplexed, the frequency positions can also carry information, which helps reduce the information carried by the narrowband wake-up signals and, in turn, helps reduce the sequence length (time domain resource overhead) of the narrowband wake-up signals.

[0313] In summary, for narrowband wake-up signals, multiple narrowband wake-up signals should support frequency division multiplexing.

[0314] 2. Specific implementation methods

[0315] [Scheme 1]

[0316] In "Solution 1", this embodiment needs to mention "monitoring opportunity terminal device groups". Among them, the monitoring opportunity terminal device groups can use some existing terminal device grouping methods, that is, associate time domain positions and / or frequency domain positions with existing groups to simplify the design.

[0317] Optionally, a monitoring occasion terminal device group can be a group of terminal devices with the same paging occasion (PO) or paging PDCCH monitoring occasion (PMO). The terminal devices that monitor paging or paging PDCCH on the monitoring occasion belong to the same monitoring occasion terminal device group. At this time, the monitoring occasion terminal device group can also be called a paging occasion terminal device group (PO UE group), a terminal device group (UE group) or a paging occasion group (PO group). A paging occasion can be composed of a group of paging-related PDCCH monitoring occasions.

[0318] Optionally, a monitoring opportunity terminal device group can be a grouping of terminal devices with the same paging early indciation occasion (PEI-O) or paging early indication PDCCH monitoring occasion (PEI-MO). The terminal devices that monitor PEI or PEIPDCCH at the monitoring occasion 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 group of PEI-MO.

[0319] Optionally, a monitoring opportunity terminal device group can be a subgroup of terminal devices in a paging early indication (PEI). PEI can indicate a subgroup of a PO UE group, that is, the PO UE group can be subdivided, for example, using a bitmap, with one bit corresponding to one subgroup.

[0320] The following embodiments of this application will illustrate related research on frequency division multiplexing of wake-up signals supporting multiple narrowbands from various implementations. The various implementations can be arbitrarily combined to form new implementations, and the new implementations are also within the scope of protection claimed in this application. At the same time, the same content in one embodiment and other embodiments can be referenced to each other, and this will not be repeated here.

[0321]

Method 1-1

[0322] In “Method 1-1”, the present application needs to study the time-frequency resource location of the narrowband wake-up signal under the frequency division multiplexing supporting multiple narrowband wake-up signals.

[0323] Since the wake-up signal is monitored periodically, the monitoring timing of the wake-up signal (equivalent to the time position index) carries part of the information of the terminal device identification (such as UE ID), and the terminal device identification can be used to indicate / distinguish / identify the terminal device. Therefore, in "Method 1-1", this application can consider frequency division multiplexing of multiple narrowband wake-up signals, and the frequency position index or time domain position index carries part of the information of the terminal device identification.

[0324] Based on this, this application provides a communication method, taking the interaction between a network device and a terminal device as an example. The network device can be a chip, chip module, or communication module, and the terminal device can be a chip, chip module, communication module, or low-power receiver, without specific limitation. The following describes "Scenario A" and "Scenario B."

[0325]

Scenario A

[0326] In "Scenario A", FIG2 is a flow chart of a communication method according to an embodiment of the present application, which specifically includes the following steps:

[0327] S210. The network device sends 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 an identification portion of the first terminal device.

[0328] Correspondingly, the terminal device monitors the wake-up signal at a frequency domain position or a time domain position.

[0329] The wake-up signal here may be a narrowband wake-up signal.

[0330] 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, so 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 monitor 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. Frequency division multiplexing of multiple wake-up signals can increase the grouping of wake-up signals (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 reduce the information carried by the narrowband wake-up signal, and further helps to reduce the sequence length of the narrowband wake-up signal (time domain resource overhead).

[0331] 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.

[0332] Optionally, the time domain position may be a time domain unit such as a symbol, a time slot, a subframe, or a mini-time slot.

[0333] Optionally, the frequency domain position may be represented by a frequency domain position index.

[0334] Optionally, the time domain position can be used for time domain position index representation.

[0335] Optionally, the first terminal device identification portion may correspond to a frequency domain position terminal device group.

[0336] In this way, the network device can send a wake-up signal to different terminal device groups at different frequency domain positions. The terminal device can monitor the wake-up signal at the corresponding frequency domain position according to the terminal device group it belongs to.

[0337] Optionally, a frequency domain location terminal device group refers to a group of terminal devices having the same frequency domain location. Terminal devices monitoring the wake-up signal at the frequency domain location belong to the same frequency domain location terminal device group.

[0338] In addition, the "terminal device group" mentioned in this application may be a "terminal device grouping." That is, the "group," "group," and "group" mentioned in this embodiment may be equivalent to each other.

[0339] Optionally, the first terminal device identification portion may correspond to a time domain location terminal device group.

[0340] In this way, the network device can send a wake-up signal to different terminal device groups at different time domain positions. The terminal device can monitor the wake-up signal at a corresponding time domain position according to the terminal device group to which it belongs.

[0341] Optionally, a time domain location terminal device group refers to a group of terminal devices having the same time domain location. Terminal devices monitoring the wake-up signal at the time domain location belong to the same time domain location terminal device group.

[0342] It's worth noting that the aforementioned "time domain location terminal device groups" and / or "frequency domain location terminal device groups" can be viewed as a grouping method specifically designed for wake-up signals. This method associates time domain locations and / or frequency domain locations with specifically designed groups to increase flexibility. Each time domain location and / or frequency domain location can be viewed as a monitoring opportunity.

[0343] Furthermore, the frequency domain location terminal device group may be a supergroup (supergroup or hypergroup) of the monitoring opportunity terminal device group or a subgroup (subgroup) of the monitoring opportunity terminal device group.

[0344] It should be noted that terminal devices can be grouped by monitoring opportunity, that is, different monitoring opportunities correspond to different monitoring opportunity terminal device groups. When the frequency domain location terminal device group is a supergroup of the monitoring opportunity terminal device group, the frequency domain location terminal device group includes one or more monitoring opportunity terminal device groups; when the frequency domain location terminal device group is a subgroup of the monitoring opportunity terminal device group, the monitoring opportunity terminal device group includes one or more frequency domain location terminal device groups.

[0345] Furthermore, the time-domain location terminal device group may be a supergroup of the monitoring opportunity terminal device group or a subgroup of the monitoring opportunity terminal device group.

[0346] It should be noted that terminal devices can be grouped by monitoring opportunity, i.e., different monitoring opportunities correspond to different monitoring opportunity terminal device groups. When the time-domain location terminal device group is a supergroup of the monitoring opportunity terminal device group, the time-domain location terminal device group includes one or more monitoring opportunity terminal device groups; when the time-domain location terminal device group is a subgroup of the monitoring opportunity terminal device group, the monitoring opportunity terminal device group includes one or more time-domain location terminal device groups.

[0347] Optionally, with respect to 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 may be a supergroup of the time domain location terminal device group or a subgroup of the time domain location terminal device group.

[0348] Optionally, there can be 2, 4 or 8 frequency domain positions.

[0349] In this way, the frequency domain position can correspond to 2, 4 or 8 terminal device groups, which can avoid the excessive complexity of resource allocation caused by too many terminal device groups. In addition, 2, 4, and 8 can correspond to 1, 2, and 3 bits in the terminal device identifier respectively, which facilitates system design.

[0350] Optionally, there can be 2, 4, or 8 time domain positions.

[0351] In this way, the time domain position can correspond to 2, 4 or 8 terminal device groups, which can avoid the excessive complexity of resource allocation caused by too many terminal device groups, and 2, 4, and 8 can correspond to 1, 2, and 3 bits in the terminal device identifier respectively, which facilitates system design.

[0352]

Scenario B

[0353] In "Scenario B", FIG3 is a flow chart of a communication method according to an embodiment of the present application, which specifically includes the following steps:

[0354] S310. The network device sends a wake-up signal on a frequency domain position subset or a time domain position subset. The frequency domain position subset corresponds to the identification part of the first terminal device. The frequency domain position subset includes multiple frequency domain positions, and the time domain position subset includes multiple time domain positions.

[0355] Correspondingly, the terminal device monitors the wake-up signal on the frequency domain position subset or the time domain position subset.

[0356] The wake-up signal here may be a narrowband wake-up signal.

[0357] It can be seen that since the frequency domain position subset or the time domain position subset can correspond 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 monitor their respective wake-up signals on different frequency domain position subsets or different time domain position subsets, thereby realizing frequency division multiplexing of multiple wake-up signals. Among them, the grouping of wake-up signals can be increased (the number of information bits carried can be increased) by frequency division multiplexing of multiple wake-up signals. When multiple narrowband wake-up signals are frequency-division multiplexed, the frequency position can also carry information, which is beneficial to reduce the information carried by the narrowband wake-up signal, and further helps to reduce the sequence length of the narrowband wake-up signal (time domain resource overhead).

[0358] Optionally, the frequency domain position subset may be multiple carriers, multiple cells, multiple subbands, multiple RBs, or multiple bandwidth parts, etc.

[0359] Optionally, the multiple time domain positions may be multiple symbols, multiple time slots, multiple subframes, multiple mini time slots, etc.

[0360] Optionally, the frequency domain position subset may be represented by a frequency domain position subset index.

[0361] Optionally, the time domain position subset may be represented by a time domain position subset index.

[0362] Optionally, the first terminal device identification part may correspond to a frequency domain position subset terminal device group.

[0363] In this way, the network device can send a wake-up signal to different terminal device groups at different frequency domain position subsets, for example, sending a wake-up signal at all frequency domain position subsets. The terminal device can monitor for the wake-up signal at the corresponding frequency domain position subset based on the terminal device group it belongs to, for example, only confirming that the wake-up signal has been detected when the signal is detected at all frequency domain position subsets.

[0364] Optionally, a frequency domain position subset terminal device group refers to a group of terminal devices having the same frequency domain position subset. Terminal devices monitoring the wake-up signal in the frequency domain position subset belong to the same frequency domain position subset terminal device group.

[0365] Optionally, the first terminal device identification part may correspond to a time domain position subset terminal device group.

[0366] In this way, the network device can send a wake-up signal to different terminal device groups at different time domain location subsets, for example, sending a wake-up signal at all time domain location subsets. The terminal device can monitor for the wake-up signal at the corresponding time domain location subset based on the terminal device group it belongs to, for example, only confirming that the wake-up signal has been detected when the signal is detected at all time domain location subsets.

[0367] Optionally, a time domain location subset terminal device group refers to a group of terminal devices having the same time domain location subset. Terminal devices monitoring the wake-up signal in the time domain location subset belong to the same time domain location subset terminal device group.

[0368] Optionally, the frequency domain position subset terminal device group may be a supergroup of the monitoring opportunity terminal device group or a subgroup of the monitoring opportunity terminal device group.

[0369] It should be noted that when the frequency domain position subset terminal device group is a supergroup of the monitoring opportunity terminal device group, the frequency domain position subset terminal device group may include one or more monitoring opportunity terminal device groups; when the frequency domain position subset terminal device group is a subgroup of the monitoring opportunity terminal device group, the monitoring opportunity terminal device group may include one or more frequency domain position subset terminal device groups.

[0370] Optionally, the time domain location subset terminal device group may be a supergroup of the monitoring opportunity terminal device group or a subgroup of the monitoring opportunity terminal device group.

[0371] It should be noted that when the time domain position subset terminal device group is a supergroup of the monitoring opportunity terminal device group, the time domain position subset terminal device group may include one or more monitoring opportunity terminal device groups; when the time domain position subset terminal device group is a subgroup of the monitoring opportunity terminal device group, the monitoring opportunity terminal device group may include one or more time domain position subset terminal device groups.

[0372] Optionally, for the relationship between the frequency domain position subset terminal device group and the time domain position subset terminal device group, the frequency domain position subset terminal device group can be a supergroup of the time domain position subset terminal device group or a subgroup of the time domain position subset terminal device group.

[0373] Optionally, the frequency domain position subset may include 2, 4 or 8 frequency domain positions.

[0374] In this way, the frequency domain position can correspond to 2, 4 or 8 terminal device groups, which can avoid the excessive complexity of resource allocation caused by too many terminal device groups. In addition, 2, 4, and 8 can correspond to 1, 2, and 3 bits in the terminal device identifier respectively, which facilitates system design.

[0375] Optionally, the time domain position subset may include 2, 4 or 8 time domain positions.

[0376] In this way, the frequency domain position can correspond to 2, 4 or 8 terminal device groups, which can avoid the excessive complexity of resource allocation caused by too many terminal device groups. In addition, 2, 4, and 8 can correspond to 1, 2, and 3 bits in the terminal device identifier respectively, which facilitates system design.

[0377] [Method 1-2]

[0378] In “Scheme 1-2”, the present application needs to study the time-frequency resource location of the narrowband wake-up signal under the frequency division multiplexing supporting multiple narrowband wake-up signals.

[0379] Since the wake-up signal is monitored periodically, the monitoring timing 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 "Method 1-2", this application can consider 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 timing of the wake-up signal carries the second part of the information of the terminal device identifier.

[0380] Based on this, this application provides a communication method, taking the interaction between a network device and a terminal device as an example. The network device can be a chip, chip module, or communication module, and the terminal device can be a chip, chip module, communication module, or low-power receiver, without specific limitation. The following describes "Scenario A" and "Scenario B."

[0381]

Scenario a

[0382] In "Scenario A", FIG4 is a flow chart of another communication method according to an embodiment of the present application, which specifically includes the following steps:

[0383] 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 the first terminal device identification part, and the time domain position corresponds to the second terminal device identification part; or, the first combination corresponds to the third terminal device identification part.

[0384] Correspondingly, the terminal device monitors the wake-up signal on the first combination.

[0385] The wake-up signal here may be a narrowband wake-up signal.

[0386] 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 the 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.

[0387] 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 on different first combinations; correspondingly, the terminal device can monitor the wake-up signal on different first combinations.

[0388] Optionally, the frequency domain position may be represented by a frequency domain position index.

[0389] Optionally, the time domain position can be used for time domain position index representation.

[0390] 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.

[0391] Optionally, the first terminal device identification portion may correspond to a frequency domain position terminal device group.

[0392] In this way, the network device can send a wake-up signal to different terminal device groups at different frequency domain positions. The terminal device can monitor the wake-up signal at the corresponding frequency domain position according to the terminal device group it belongs to.

[0393] Furthermore, the frequency domain location terminal device group may be a supergroup of the monitoring opportunity terminal device group or a subgroup of the monitoring opportunity terminal device group.

[0394] It should be noted that terminal devices can be grouped by monitoring opportunity, that is, different monitoring opportunities correspond to different monitoring opportunity terminal device groups. When the frequency domain location terminal device group is a supergroup of the monitoring opportunity terminal device group, the frequency domain location terminal device group includes one or more monitoring opportunity terminal device groups; when the frequency domain location terminal device group is a subgroup of the monitoring opportunity terminal device group, the monitoring opportunity terminal device group includes one or more frequency domain location terminal device groups.

[0395] Optionally, the second terminal device identification portion may correspond to a time domain location terminal device group.

[0396] In this way, the network device can send a wake-up signal to different terminal device groups at different time domain positions. The terminal device can monitor the wake-up signal at a corresponding time domain position according to the terminal device group to which it belongs.

[0397] Furthermore, the time-domain location terminal device group may be a supergroup of the monitoring opportunity terminal device group or a subgroup of the monitoring opportunity terminal device group.

[0398] It should be noted that terminal devices can be grouped by monitoring opportunity, i.e., different monitoring opportunities correspond to different monitoring opportunity terminal device groups. When the time-domain location terminal device group is a supergroup of the monitoring opportunity terminal device group, the time-domain location terminal device group includes one or more monitoring opportunity terminal device groups; when the time-domain location terminal device group is a subgroup of the monitoring opportunity terminal device group, the monitoring opportunity terminal device group includes one or more time-domain location terminal device groups.

[0399] The monitoring opportunity terminal device group includes one or more time domain position terminal device groups. It can be understood that one monitoring opportunity includes one or more time domain positions.

[0400] Optionally, with respect to 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 may be a supergroup of the time domain location terminal device group or a subgroup of the time domain location terminal device group.

[0401] Optionally, the third terminal device identification part may correspond to a terminal device group in the time-frequency domain.

[0402] The time-frequency domain position can be understood as a combination of the time domain position and the frequency domain position.

[0403] In this way, the network device can send a wake-up signal to different terminal device groups at different time-frequency domain locations. The terminal device can monitor the wake-up signal at the corresponding time-frequency domain location based on the terminal device group it belongs to.

[0404] Furthermore, the time-frequency domain location terminal device group may be a supergroup of the monitoring opportunity terminal device group or a subgroup of the monitoring opportunity terminal device group.

[0405] It should be noted that terminal devices can be grouped by monitoring opportunity, that is, different monitoring opportunities correspond to different monitoring opportunity terminal device groups. When the time-frequency domain location terminal device group is a supergroup of the monitoring opportunity terminal device group, the time-frequency domain location terminal device group includes one or more monitoring opportunity terminal device groups; when the time-frequency domain location terminal device group is a subgroup of the monitoring opportunity terminal device group, the monitoring opportunity terminal device group includes one or more time-frequency domain location terminal device groups.

[0406] Optionally, there can be 2, 4 or 8 frequency domain positions.

[0407] In this way, the frequency domain position can correspond to 2, 4 or 8 terminal device groups, which can avoid the excessive complexity of resource allocation caused by too many terminal device groups. In addition, 2, 4, and 8 can correspond to 1, 2, and 3 bits in the terminal device identifier respectively, which facilitates system design.

[0408] Optionally, there can be 2, 4, or 8 time domain positions.

[0409] In this way, the time domain position can correspond to 2, 4 or 8 terminal device groups, which can avoid the excessive complexity of resource allocation caused by too many terminal device groups, and 2, 4, and 8 can correspond to 1, 2, and 3 bits in the terminal device identifier respectively, which facilitates system design.

[0410] Optionally, the first combination may be 4, 8 or 16.

[0411] In this way, the first combination can correspond to 4, 8 or 16 terminal device groups, which can avoid the excessive complexity of resource allocation caused by too many terminal device groups, and 4, 8, and 16 can correspond to 2, 3, and 4 bits in the terminal device identifier respectively, which facilitates system design.

[0412] Optionally, if there are 4 first combinations, there are 2 frequency domain positions and 2 time domain positions.

[0413] In this way, there are 4 total combinations of frequency domain positions and time domain positions, and the frequency domain positions carry valid information, and the time domain positions also carry valid information, which is beneficial to improving resource utilization.

[0414] 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.

[0415] In this way, there are 8 total combinations of frequency domain positions and time domain positions, and the frequency domain positions carry valid information, and the time domain positions also carry valid information, which is beneficial to improving resource utilization.

[0416] 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.

[0417] In this way, there are 8 total combinations of frequency domain positions and time domain positions, and the frequency domain positions carry valid information, and the time domain positions also carry valid information, which is beneficial to improving resource utilization.

[0418]

Scenario b

[0419] In "Scenario B", FIG5 is a flow chart of another communication method according to an embodiment of the present application, which specifically includes the following steps:

[0420] 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 the third terminal device identification part, and the first combination is a combination of frequency domain position and time domain position.

[0421] Correspondingly, the terminal device listens for the wake-up signal on a subset of the first combination.

[0422] The wake-up signal here may be a narrowband wake-up signal.

[0423] 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 device 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.

[0424] Optionally, the frequency domain position may be represented by a frequency domain position index.

[0425] Optionally, the time domain position can be used for time domain position index representation.

[0426] 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.

[0427] Optionally, the third terminal device identification part may correspond to a time-frequency domain position subset terminal device group.

[0428] In this way, the network device can send a wake-up signal to different terminal device groups at different time-frequency domain position subsets. The terminal device can monitor the wake-up signal at the corresponding time-frequency domain position subset according to the terminal device group it belongs to.

[0429] Furthermore, the time-frequency domain position subset terminal device group may be a supergroup of the monitoring opportunity terminal device group or a subgroup of the monitoring opportunity terminal device group.

[0430] It should be noted that terminal devices can be grouped by monitoring opportunity, that is, different monitoring opportunities correspond to different monitoring opportunity terminal device groups. When the time-frequency domain position subset terminal device group is a supergroup of the monitoring opportunity terminal device group, the time-frequency domain position subset terminal device group includes one or more monitoring opportunity terminal device groups; when the time-frequency domain position subset terminal device group is a subgroup of the monitoring opportunity terminal device group, the monitoring opportunity terminal device group includes one or more time-frequency domain position subset terminal device groups.

[0431] Optionally, there can be 2, 4 or 8 frequency domain positions.

[0432] In this way, the frequency domain position can correspond to 2, 4 or 8 terminal device groups, which can avoid the excessive complexity of resource allocation caused by too many terminal device groups. In addition, 2, 4, and 8 can correspond to 1, 2, and 3 bits in the terminal device identifier respectively, which facilitates system design.

[0433] Optionally, there can be 2, 4, or 8 time domain positions.

[0434] In this way, the time domain position can correspond to 2, 4 or 8 terminal device groups, which can avoid the excessive complexity of resource allocation caused by too many terminal device groups, and 2, 4, and 8 can correspond to 1, 2, and 3 bits in the terminal device identifier respectively, which facilitates system design.

[0435] Optionally, the first combination may be 4, 8 or 16.

[0436] In this way, the first combination can correspond to 4, 8 or 16 terminal device groups, which can avoid the excessive complexity of resource allocation caused by too many terminal device groups, and 4, 8, and 16 can correspond to 2, 3, and 4 bits in the terminal device identifier respectively, which facilitates system design.

[0437] Optionally, if there are 4 first combinations, there are 2 frequency domain positions and 2 time domain positions.

[0438] In this way, there are 4 total combinations of frequency domain positions and time domain positions, and the frequency domain positions carry valid information, and the time domain positions also carry valid information, which is beneficial to improving resource utilization.

[0439] 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.

[0440] In this way, there are 8 total combinations of frequency domain positions and time domain positions, and the frequency domain positions carry valid information, and the time domain positions also carry valid information, which is beneficial to improving resource utilization.

[0441] 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.

[0442] In this way, there are 8 total combinations of frequency domain positions and time domain positions, and the frequency domain positions carry valid information, and the time domain positions also carry valid information, which is beneficial to improving resource utilization.

[0443] [Scheme 2]

[0444] In "Solution 2", this embodiment needs to mention "monitoring opportunity terminal device groups". Among them, the monitoring opportunity terminal device groups can use some existing terminal device grouping methods, that is, associate time domain positions and / or frequency domain positions with existing groups to simplify the design.

[0445] Optionally, a monitoring opportunity terminal device group can be a group of terminal devices with the same PO or PMO. The terminal devices that monitor paging or paging PDCCH at the monitoring opportunity belong to the same monitoring opportunity terminal device group. In this case, 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 group of paging-related PDCCH monitoring opportunities.

[0446] Optionally, a monitoring opportunity terminal device group can be a group of terminal devices with the same PEI-O or PEI-MO. The terminal devices that monitor PEI or PEIPDCCH at the monitoring opportunity belong to the same monitoring opportunity terminal device group. In this case, 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 group of PEI-MOs.

[0447] Optionally, a monitoring opportunity terminal device group may be a subgroup of terminal devices in the PEI. The PEI may indicate a subgroup of the PO UE group, that is, the PO UE group may be subdivided, for example, using a bitmap, with one bit corresponding to one subgroup.

[0448] The following embodiments of the present application will illustrate relevant research on frequency division multiplexing of multiple narrowband wake-up signals from the perspective of specific implementation methods.

[0449]

Method 2-1

[0450] In "Method 2-1", when multiple narrowband wake-up signals are frequency-division multiplexed, frequency deviation (the low accuracy of the clock of the low-power receiver) will cause interference between the multiple narrowband wake-up signals, so a guard band needs to be introduced, but the guard band will also increase system overhead.

[0451] In light of the above, the preamble sent by network devices allows terminal devices to synchronize time and frequency, thereby reducing frequency deviation and, consequently, guard band. However, each narrowband wake-up signal has a preamble. While this can reduce the guard band, the preamble itself also increases system overhead. Therefore, this presents a trade-off.

[0452] Based on this, for multiple narrowband wake-up signals of frequency division multiplexing, the present application can adopt a "shared" preamble part, which can not only reduce the frequency deviation, but also avoid excessive preamble parts to save signaling / resource overhead.

[0453] FIG6 is a flow chart 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. The network device may be a chip, a chip module, or a communication module, and the terminal device may be a chip, a chip module, a communication module, or a low-power receiver, without specific limitation. The method specifically includes the following steps:

[0454] S610. The network device sends a leading part, which precedes the wake-up signal corresponding to one or more monitoring opportunity terminal device groups; or, the leading part precedes the wake-up signal corresponding to one or more frequency domain position terminal device groups; or, the leading part precedes the wake-up signal corresponding to one or more time domain position terminal device groups; or, the leading part precedes the wake-up signal corresponding to one or more time-frequency domain position device groups.

[0455] Correspondingly, the terminal device receives the leading part.

[0456] The leading portion may be a leading portion of a narrowband wake-up signal.

[0457] The leading part can be used for time-frequency synchronization.

[0458] As can be seen, since the wake-up signals of the terminal device groups divided by one or more monitoring opportunities / one or more time domain locations / one or more frequency domain locations share the same preamble, this preamble is equivalent to a "shared" preamble. In this way, by sharing the preamble, frequency deviation can be reduced and excessive preambles can be avoided, saving signaling and resource overhead.

[0459] Optionally, there is a time interval between the leading portion and the first wake-up signal of the wake-up signals corresponding to one or more monitoring opportunity terminal device groups.

[0460] In this way, when processing the preamble, the low-power receiver can enable a high-precision clock to improve time-frequency synchronization accuracy, and when monitoring the wake-up signal, the low-power receiver can enable a low-precision clock to reduce power consumption. Because this clock switching takes time, a time interval (time interval), or guard period, is required before the first wake-up signal. Of course, this application is not limited to clock switching, and may also involve switching of other hardware parts or components.

[0461] Optionally, there is a time interval between the leading part and the first wake-up signal in the wake-up signals corresponding to one or more frequency domain location terminal device groups.

[0462] It can be seen that since the relevant switching takes time, there needs to be a time interval, or protection period, before the first wake-up signal.

[0463] Optionally, there is a time interval between the leading portion and the first wake-up signal in the wake-up signals corresponding to one or more time-domain location terminal device groups.

[0464] It can be seen that since the relevant switching takes time, there needs to be a time interval, or protection period, before the first wake-up signal.

[0465] Optionally, there is a time interval between the leading part and the first wake-up signal in the wake-up signals corresponding to one or more time-frequency domain location terminal device groups.

[0466] It can be seen that since the relevant switching takes time, there needs to be a time interval, or protection period, before the first wake-up signal.

[0467] Furthermore, the time interval may be one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols.

[0468] In this way, the OFDM symbol count is adopted to simplify the design, and the OFDM symbols not used for the wake-up signal can be used for other signals / channels.

[0469] Preferably, the one or more OFDM symbols may include 1 or 2 OFDM symbols.

[0470] In this way, the present application can control the protection period to be as short as possible and simplify resource allocation.

[0471] Furthermore, the time interval may be configured by the network.

[0472] In this way, the network can plan the time interval used by the current cell according to the terminal device capabilities.

[0473] Furthermore, the time interval may be determined by pre-configuration, protocol provisions, or autonomously by the terminal device.

[0474] In this way, the present application can configure the time interval in a flexible and multiple manners, thereby improving flexibility.

[0475] Furthermore, the time interval is not less than the minimum time interval reported by the terminal device.

[0476] In this way, the terminal device can report the minimum time interval based on its own low-power receiver (hardware) capabilities, such as bandwidth, filter switching time, etc. The network then plans the time interval used in the current cell or tracking area based on the capabilities reported by the terminal devices using low-power receivers to ensure that these terminal devices can complete the handover smoothly.

[0477] Optionally, the frequency domain resource of the leading part may be a frequency extension of a wake-up signal corresponding to one or more monitoring opportunity terminal device groups.

[0478] In this way, the frequency domain resources of the leading part shared by the terminal device groups divided by one or more monitoring opportunities are the same as the bandwidth of the frequency domain resources corresponding to all wake-up signals of the terminal device groups divided by one or more monitoring opportunities, which facilitates system design and resource allocation.

[0479] Optionally, the frequency domain resource of the leading part is a frequency extension of the wake-up signal corresponding to one or more frequency domain location terminal device groups.

[0480] In this way, the frequency domain resources of the leading part shared by one or more terminal device groups divided by frequency domain positions are the same as the bandwidth of the frequency domain resources corresponding to all wake-up signals of one or more terminal device groups divided by frequency domain positions, which facilitates system design and resource allocation.

[0481] Optionally, the frequency domain resource of the leading part is a frequency extension of the wake-up signal corresponding to one or more time domain location terminal device groups.

[0482] In this way, the frequency domain resources of the leading part shared by one or more terminal device groups divided by time domain positions are the same as the bandwidth of the frequency domain resources corresponding to all wake-up signals of one or more terminal device groups divided by time domain positions, which facilitates system design and resource allocation.

[0483] Optionally, the frequency domain resource of the leading part is a frequency extension of the wake-up signal corresponding to one or more time-frequency domain position terminal device groups.

[0484] In this way, the frequency domain resources of the leading part shared by one or more terminal device groups divided by time and frequency domain positions are the same as the bandwidth of the frequency domain resources corresponding to all wake-up signals of one or more terminal device groups divided by time and frequency domain positions, which facilitates system design and resource allocation.

[0485] [Scheme 3]

[0486] In "Scheme 3", the following embodiments of this application will illustrate the relevant research on the design of synchronization signals from multiple implementation methods. Among them, various implementation methods can be arbitrarily combined to form new implementation methods, and such new implementation methods are also within the scope of protection claimed in this application, and will not be described in detail.

[0487] In some scenarios, synchronization signals need to be sent using beam sweeping to improve coverage. Beam sweeping can be accomplished by time-division multiplexing a series of synchronization signals, with synchronization signals being sent at multiple time-domain locations. When there are multiple beams, beam sweeping can also be accomplished by frequency-division multiplexing a series of synchronization signals, with synchronization signals being sent at multiple frequency-domain locations.

[0488] It is worth noting that some low-power receivers can receive orthogonal frequency division multiplexing (OFDM) signals, which means they 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 synchronization signal blocks. Therefore, the "synchronization signal" below is not limited to low-power synchronization signals, but can also be a synchronization signal block, which means that the synchronization signal below can be replaced by a synchronization signal block. Here, the synchronization signal block is a broad synchronization signal block, which can be the synchronization signal block in the current 5G system or the synchronization signal block in future systems.

[0489]

Method 3-1

[0490] In "Method 3-1", the terminal device can receive the synchronization signal at the frequency domain position.

[0491] This allows terminal devices to receive different synchronization signals at different frequency domain locations. Different synchronization signals correspond to different beams, allowing terminal devices to synchronize on different beams. This addresses frequency selectivity and reduces time domain overhead in the beam direction. Network devices can then send synchronization signals at corresponding frequency domain locations.

[0492] In this way, network equipment can send different synchronization signals at different frequency domain positions. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead in the beam direction.

[0493] In addition, the terminal device can obtain the beam identifier based on 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.

[0494] Correspondingly, the network device can send a beam identifier through a synchronization signal so that the terminal device can obtain a time identifier through the beam identifier.

[0495] Optionally, the time identifier may be a 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 a number / index of the synchronization signal in a time arrangement.

[0496] 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 based on the preset relationship.

[0497] Optionally, when the time identifier is the number / index of the time unit, the beam identifier can 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, the beam identifier is modulo the number of frequency domain positions to obtain the number / index of the time unit, that is, the time identifier.

[0498] 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 frequency domain position of the synchronization signal and then according to the number / index of the synchronization signal in the time arrangement. Then, the beam identifier can be modulo the number of frequency domain positions to obtain the number / index of the synchronization signal in the time arrangement, and this number / index is the time identifier.

[0499] Optionally, the number of frequency domain positions may be given by a higher-level parameter or a preset value.

[0500] Optionally, the beam identifier, the time identifier, and the frequency domain identifier have a preset relationship, wherein the frequency domain identifier is a number / index of a frequency position. In this way, the terminal device derives the time identifier from the beam identifier and the frequency domain identifier based on the preset relationship.

[0501]

Method 3-2

[0502] In "Method 3-2", the terminal device can receive the synchronization signal at a frequency domain position subset, and the frequency domain position subset includes multiple frequency domain positions.

[0503] In this way, the terminal device can receive different synchronization signals on different frequency domain position subsets. 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 in the beam direction.

[0504] Correspondingly, the network device may send synchronization signals at a subset of frequency domain locations.

[0505] In this way, network equipment can send different synchronization signals on different subsets of frequency domain positions. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead in the beam direction.

[0506] Optionally, the frequency domain position subset can be a frequency domain position set, or a part of a frequency domain position set, i.e., a subset. The frequency domain position is the basic unit of the frequency domain, and the synchronization signal resources are located at multiple frequency domain positions, which increases flexibility.

[0507] In addition, the terminal device can obtain the beam identifier based on 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.

[0508] Correspondingly, the network device can send a beam identifier through a synchronization signal so that the terminal device can obtain a time identifier through the beam identifier.

[0509] Optionally, the time identifier may be a 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 a number / index of the synchronization signal in a time arrangement.

[0510] Optionally, the beam identifier and the time identifier have a preset relationship, so that the terminal device can derive the time identifier from the beam identifier.

[0511] Optionally, when the time identifier is the number / index of the time unit, the beam identifier can be arranged first according to the frequency domain position subset of the synchronization signal and then according to the number / index of the time unit. Then, the beam identifier can be modulo the number of frequency domain position subsets to obtain the number / index of the time unit, that is, the time identifier.

[0512] 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 frequency 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 is modulo the number of frequency domain position subsets to obtain the number / index of the synchronization signal in the time arrangement, and this number / index is the time identifier.

[0513] Optionally, the number of frequency domain position subsets may be given by a high-level parameter or a preset value.

[0514] Optionally, the beam identifier, the time identifier, and the frequency domain identifier have a preset relationship, wherein the frequency domain identifier is the number / index of the frequency position subset. In this way, the terminal device derives the time identifier from the beam identifier and the frequency domain identifier based on the preset relationship.

[0515]

Method 3-3

[0516] In "Method 3-3", the terminal device can receive the synchronization signal at the time-frequency position.

[0517] In this way, the terminal device can receive different synchronization signals at different time-frequency positions. 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.

[0518] Correspondingly, the network device can send synchronization signals at the time and frequency positions.

[0519] In this way, network equipment can send different synchronization signals at different time-frequency positions. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead in the beam direction.

[0520] 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. Different synchronization signals correspond to different beams, so that the terminal device can obtain the selected beam identifier for subsequent beam reporting, etc.

[0521] In addition, the terminal device can obtain the beam identifier based on 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.

[0522] Correspondingly, the network device can send a beam identifier through a synchronization signal so that the terminal device can obtain a time identifier through the beam identifier.

[0523] Optionally, the time identifier may be a 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 a number / index of the synchronization signal in a time arrangement.

[0524] 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 based on the preset relationship.

[0525] Optionally, when the time identifier is the number / index of the 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 is modulo the number of time domain positions to obtain the number / index of the time unit, that is, the time identifier.

[0526] 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, the beam identifier can be modulo the number of time domain positions to obtain the number / index of the synchronization signal in the time arrangement, and this number / index is the time identifier.

[0527] Optionally, the number of time domain positions can be given by a high-level parameter or a preset value.

[0528] Optionally, the beam identifier, the time identifier, and the time domain identifier have a preset relationship, wherein the time domain identifier is a number / index of a time domain position. In this way, the terminal device derives the time identifier from the beam identifier and the time domain identifier based on the preset relationship.

[0529]

Method 3-4

[0530] In "Mode 3-4", the terminal device receives a synchronization signal at a time domain position subset, where the time domain position subset includes multiple time domain positions.

[0531] In this way, the terminal device can receive different synchronization signals on different time domain position subsets. 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.

[0532] Correspondingly, the network device may send a synchronization signal on a time domain position subset, where the time domain position subset includes multiple time domain positions.

[0533] In this way, network equipment can send different synchronization signals on different time-frequency position subsets. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead in the beam direction.

[0534] Optionally, the time domain position subset can be the time domain position set, or a part of the time domain position set, ie, a subset. The time domain position is the basic unit of the time domain, and the synchronization signal resources are in multiple time domain positions, which increases flexibility.

[0535] In addition, the terminal device can obtain the beam identifier based on 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.

[0536] Correspondingly, the network device can send a beam identifier through a synchronization signal so that the terminal device can obtain a time identifier through the beam identifier.

[0537] Optionally, the time identifier may be a 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 a number / index of the synchronization signal in a time arrangement.

[0538] 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 based on the preset relationship.

[0539] Optionally, when the time identifier is the number / index of the time unit, the beam identifier can 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 is modulo the number of time domain position subsets to obtain the number / index of the time unit, that is, the time identifier.

[0540] 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 subset of the synchronization signal and then according to the number / index of the synchronization signal in the time arrangement. Then, the beam identifier can be modulo the number of time domain position subsets to obtain the number / index of the synchronization signal in the time arrangement, and this number / index is the time identifier.

[0541] Optionally, the number of time domain position subsets may be given by a high-level parameter or a preset value.

[0542] Optionally, the beam identifier, the time identifier, and the time domain identifier have a preset relationship, wherein 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 based on the preset relationship.

[0543] [Methods 3-5]

[0544] In "Method 3-5", the terminal device can receive the synchronization signal on the second combination, which is a combination of the frequency domain position and the time domain position.

[0545] In this way, the terminal device can receive different synchronization signals at different combinations of frequency domain positions and time domain positions. 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 in the beam direction.

[0546] Correspondingly, the network device may send a synchronization signal on the second combination.

[0547] In this way, network equipment can send different synchronization signals at different combinations of frequency domain positions and time domain positions. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead in the beam direction.

[0548] In addition, the terminal device can obtain the beam identifier based on 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.

[0549] Correspondingly, the network device can send a beam identifier through a synchronization signal so that the terminal device can obtain a time identifier through the beam identifier.

[0550] Optionally, the time identifier may be a 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 a number / index of the synchronization signal in a time arrangement.

[0551] 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 based on the preset relationship.

[0552] 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 is modulo the number of the second combination to obtain the number / index of the time unit, that is, the time identifier.

[0553] 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 can be modulo the number of the second combination to obtain the number / index of the synchronization signal in the time arrangement, and the number / index is the time identifier.

[0554] Optionally, the second combination quantity may be given by a high-level parameter or a preset value.

[0555] Optionally, the beam identifier, the time identifier, and the second combination identifier have a preset relationship, wherein 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 based on the preset relationship.

[0556] [Methods 3-6]

[0557] In “Mode 3-6”, the terminal device may receive the synchronization signal on a subset of the second combinations, where the subset of the second combinations includes a plurality of second combinations.

[0558] In this way, the terminal device can receive different synchronization signals on different subsets of the second combination. 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 in the beam direction.

[0559] Correspondingly, the network device sends a synchronization signal on the subset of the second combination.

[0560] In this way, the network device can send different synchronization signals on different subsets of the second combination. 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 in the beam direction.

[0561] Optionally, the subset of the second combination can be the set of the second combination, or a portion of the set of the second combination, i.e., a subset. The second combination is a basic unit of time / frequency domain resources. In this way, the resources of the synchronization signal are based on multiple basic units, increasing flexibility.

[0562] In addition, the terminal device can obtain the beam identifier based on 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.

[0563] Correspondingly, the network device sends a beam identifier through a synchronization signal, so that the terminal device obtains the time identifier through the beam identifier.

[0564] Optionally, the time identifier may be a 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 a number / index of the synchronization signal in a time arrangement.

[0565] 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 based on the preset relationship.

[0566] Optionally, when the time identifier is the number / index of the 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 is modulo the number of subsets of the second combination to obtain the number / index of the time unit, that is, the time identifier.

[0567] Optionally, when the time identifier is the number / index of the synchronization signal in the time arrangement, the beam identifier can be first arranged 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, the beam identifier can be modulo the number of subsets of the second combination to obtain the number / index of the synchronization signal in the time arrangement, and the number / index is the time identifier.

[0568] Optionally, the number of subsets of the second combination may be given by a high-level parameter or a preset value.

[0569] Optionally, the beam identifier and the time identifier have a preset relationship with the subset identifier of the second combination, wherein the subset identifier of the second combination is the number / index of the subset of the second combination. In this way, the terminal device derives the time identifier from the beam identifier and the subset identifier of the second combination based on the preset relationship.

[0570]

Methods 3-7

[0571] In "Method 3-7", the terminal device can obtain it through the broadcast channel in the synchronization signal block.

[0572] 5. Example Description of a Communication Device

[0573] The above mainly introduces the solution of the embodiment of the present application from the perspective of the method side. It is understandable that, in order to implement the above functions, the network device includes a hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form 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 be beyond the scope of this application.

[0574] The embodiments of the present application can divide the network device into functional units according to the above-mentioned method examples. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into a processing unit. The above-mentioned 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 embodiments of the present application is schematic and is only a logical functional division. In actual implementation, other division methods can be used.

[0575] In the case of using integrated units, FIG7 is a block diagram of functional units of a communication device according to an embodiment of the present application. The communication device 700 includes: a sending unit 701 .

[0576] Optionally, the sending unit 701 may be a module unit for sending signals, data, information, sequences, etc., and there is no specific limitation on this.

[0577] Optionally, the communication device 700 may further include a processing unit. The processing unit may be a processor or a controller, such as 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 the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processing unit may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0578] Optionally, the communication device 700 may further include a storage unit for storing computer program codes or instructions executed by the communication device 700. The storage unit may be a memory.

[0579] Optionally, the communication device 700 may be a chip or a chip module.

[0580] Optionally, the sending unit 701 may be integrated into other units.

[0581] For example, the sending unit 701 may be integrated into the communication unit.

[0582] It should be noted that the communication unit may be a communication interface, a transceiver, a transceiver circuit, etc.

[0583] Optionally, the sending unit 701 is configured to execute any step executed by the network device / chip / chip module / transmitter of the network device in the above method embodiment, as described in detail below.

[0584] In a specific implementation, the sending unit 701 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. Since the above application involves multiple methods, each method will be described in detail below.

[0585] In "Case 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, and the frequency domain position or the time domain position corresponds to the identification part of the first terminal device.

[0586] It can be seen that since the frequency domain position or time domain position can correspond to the first terminal device identification portion, and different frequency domain positions or different time domain positions can correspond to different first terminal device identification portions, 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 monitor their respective wake-up signals at different frequency domain positions or different time domain positions, thereby achieving frequency division multiplexing of multiple wake-up signals.

[0587] In "Case B" of "Method 1-1", the sending unit 701 is used to send a wake-up signal on a frequency domain position subset or a time domain position subset, the frequency domain position subset corresponds to the first terminal device identification part, the frequency domain position subset includes multiple frequency domain positions, and the time domain position subset includes multiple time domain positions.

[0588] It can be seen that since the frequency domain position subset or the time domain position subset can correspond 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 monitor their respective wake-up signals on different frequency domain position subsets or different time domain position subsets, thereby realizing frequency division multiplexing of multiple wake-up signals.

[0589] In "Case a" of "Method 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 the first terminal device identification part, and the time domain position corresponds to the second terminal device identification part; or, the first combination corresponds to the third terminal device identification part.

[0590] 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 the 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 monitor the wake-up signal at different frequency domain positions and different time domain positions. Or,

[0591] Since the first combination can be associated with the third terminal device identification part, the network device can wake up the terminal device with different third terminal device identifications on different first combinations; correspondingly, the terminal device can monitor the wake-up signal on different first combinations.

[0592] In "Case b" of "Method 1-2", the sending unit 701 is used to send a wake-up signal on a subset of the first combination, and the subset of the first combination includes multiple first combinations; the first combination corresponds to the third terminal device identification part, and the first combination is a combination of frequency domain position and time domain position.

[0593] 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 device 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.

[0594] In "Mode 2-1", the sending unit 701 is used to send a leading part, which is before the wake-up signal corresponding to one or more monitoring opportunity terminal device groups; or, the leading part is before the wake-up signal corresponding to one or more frequency domain position terminal device groups; or, the leading part is before the wake-up signal corresponding to one or more time domain position terminal device groups; or, the leading part is before the wake-up signal corresponding to one or more time-frequency domain position device groups.

[0595] As can be seen, since the wake-up signals of the terminal device groups divided by one or more monitoring opportunities / one or more time domain locations / one or more frequency domain locations share the same preamble, this preamble is equivalent to a "shared" preamble. In this way, by sharing the preamble, frequency deviation can be reduced and excessive preambles can be avoided, saving signaling and resource overhead.

[0596] In "Mode 3-1", the sending unit 701 is used to send a synchronization signal at a frequency domain position.

[0597] In this way, network equipment can send different synchronization signals at different frequency domain positions. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead in the beam direction.

[0598] In "Mode 3-2", the sending unit 701 is used to send a synchronization signal on a subset of frequency domain positions.

[0599] In this way, network equipment can send different synchronization signals on different subsets of frequency domain positions. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the frequency selectivity of the beam direction, and reduce the time domain overhead in the beam direction.

[0600] In "Mode 3-3", the sending unit 701 is used to send a synchronization signal at a time-frequency position.

[0601] In this way, network equipment can send different synchronization signals at different time-frequency positions. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead in the beam direction.

[0602] In "Mode 3-4", the sending unit 701 is used to send a synchronization signal on a time domain position subset, where the time domain position subset includes multiple time domain positions.

[0603] In this way, network equipment can send different synchronization signals on different time-frequency position subsets. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the frequency / time selectivity of the beam direction, and reduce the resource overhead in the beam direction.

[0604] In "Mode 3-5", the sending unit 701 is configured to send a synchronization signal on the second combination.

[0605] In this way, network equipment can send different synchronization signals at different combinations of frequency domain positions and time domain positions. Different synchronization signals correspond to different beams, so that terminal devices can obtain synchronization on different beams, solve the time / frequency selectivity of the beam direction, and reduce the resource overhead in the beam direction.

[0606] 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.

[0607] In this way, the network device can send different synchronization signals on different subsets of the second combination. 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 in the beam direction.

[0608] It should be noted that the specific implementation of each operation in the embodiment shown in FIG. 7 can be found in the description of the method embodiment shown above, and will not be described in detail here.

[0609] 6. Example of Yet Another Communication Device

[0610] In the case of using integrated units, FIG8 is a block diagram of functional units of another communication device according to an embodiment of the present application. The communication device 800 includes: a monitoring unit 801 .

[0611] Optionally, the monitoring unit 801 may be a module unit for monitoring signals, data, information, etc., and there is no specific limitation on this.

[0612] Optionally, the communication device 800 may further include a processing unit. The processing unit may be a processor or a controller, such as 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 the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processing unit may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0613] Optionally, the communication device 800 may further include a storage unit for storing computer program codes or instructions executed by the communication device 800. The storage unit may be a memory.

[0614] Optionally, the communication device 800 may be a chip or a chip module.

[0615] Optionally, the monitoring unit 801 may be integrated into other units.

[0616] For example, the monitoring unit 801 may be integrated into a communication unit. It should be noted that the communication unit may be a communication interface, a transceiver, a transceiver circuit, and the like.

[0617] Optionally, the monitoring unit 801 is configured to execute any step executed by the terminal device / chip / chip module / receiver of the terminal device in the above method embodiment, which will be described in detail below.

[0618] In a specific implementation, the monitoring unit 801 is used to perform the steps in the above method embodiment, and when performing an action such as sending, it can optionally call other units to complete the corresponding operation. The following is a detailed description. Since the above application involves multiple methods, each method is described in detail below.

[0619] In "Scenario A" of "Method 1-1", the monitoring unit 801 is used to monitor the 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 the identification part of the first terminal device.

[0620] It can be seen that since the frequency domain position or time domain position can correspond to the first terminal device identification portion, and different frequency domain positions or different time domain positions can correspond to different first terminal device identification portions, 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 monitor their respective wake-up signals at different frequency domain positions or different time domain positions, thereby achieving frequency division multiplexing of multiple wake-up signals.

[0621] In "Case B" of "Method 1-1", the monitoring unit 801 is used to monitor the wake-up signal on the frequency domain position subset or the time domain position subset, the frequency domain position subset corresponds to the first terminal device identification part, the frequency domain position subset includes multiple frequency domain positions, and the time domain position subset includes multiple time domain positions.

[0622] It can be seen that since the frequency domain position subset or the time domain position subset can correspond 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 monitor their respective wake-up signals on different frequency domain position subsets or different time domain position subsets, thereby realizing frequency division multiplexing of multiple wake-up signals.

[0623] In "Case a" of "Method 1-2", the monitoring unit 801 is used to monitor the wake-up signal on the first combination, where the first combination is a combination of frequency domain position and time domain position; 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, the first combination corresponds to the third terminal device identification part.

[0624] 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 the 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 monitor the wake-up signal at different frequency domain positions and different time domain positions. Or,

[0625] Since the first combination can be associated with the third terminal device identification part, the network device can wake up the terminal device with different third terminal device identifications on different first combinations; correspondingly, the terminal device can monitor the wake-up signal on different first combinations.

[0626] In "Case b" of "Method 1-2", the monitoring unit 801 is used to monitor the wake-up signal on a subset of the first combination, and the subset of the first combination includes multiple first combinations; the first combination corresponds to the third terminal device identification part, and the first combination is a combination of frequency domain position and time domain position.

[0627] 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 device 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.

[0628] In "Method 2-1", the monitoring unit 801 is used to receive a leading part, which is before the wake-up signal corresponding to one or more monitoring opportunity terminal device groups; or, the leading part is before the wake-up signal corresponding to one or more frequency domain position terminal device groups; or, the leading part is before the wake-up signal corresponding to one or more time domain position terminal device groups; or, the leading part is before the wake-up signal corresponding to one or more time-frequency domain position device groups.

[0629] As can be seen, since the wake-up signals of the terminal device groups divided by one or more monitoring opportunities / one or more time domain locations / one or more frequency domain locations share the same preamble, this preamble is equivalent to a "shared" preamble. In this way, by sharing the preamble, frequency deviation can be reduced and excessive preambles can be avoided, saving signaling and resource overhead.

[0630] In "Mode 3-1", the monitoring unit 801 is used to send a synchronization signal at a frequency domain position.

[0631] In this way, the terminal device can receive different synchronization signals at different frequency domain positions. 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 in the beam direction.

[0632] In "Mode 3-2", the monitoring unit 801 is used to send a synchronization signal on a subset of frequency domain positions.

[0633] In this way, the terminal device can receive different synchronization signals on different subsets of frequency domain positions. 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 in the beam direction.

[0634] In "Mode 3-3", the monitoring unit 801 is used to send a synchronization signal at a time-frequency position.

[0635] In this way, the terminal device can receive different synchronization signals at different time-frequency positions. 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.

[0636] In "Mode 3-4", the monitoring unit 801 is configured to send a synchronization signal on a time domain position subset, where the time domain position subset includes multiple time domain positions.

[0637] In this way, the terminal device can receive different synchronization signals on different time-frequency position subsets. 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.

[0638] In "Mode 3-5", the monitoring unit 801 is used to send a synchronization signal on the second combination.

[0639] In this way, the terminal device can receive different synchronization signals at different combinations of frequency domain positions and time domain positions. 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 in the beam direction.

[0640] In "Mode 3-6", the monitoring unit 801 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.

[0641] In this way, the terminal device can receive different synchronization signals on different subsets of the second combination. 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 in the beam direction.

[0642] It should be noted that the specific implementation of each operation in the embodiment shown in FIG8 can be found in the description of the method embodiment shown above, and will not be described in detail here.

[0643] VII. Example of a Network Device

[0644] Please refer to Figure 9, which is a schematic diagram of the structure of a network device according to an embodiment of the present application. 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.

[0645] Optionally, the memory 920 includes but is not limited to random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) or portable read-only memory (CD-ROM), and the memory 920 is used to store the program code executed by the network device 900 and the data transmitted.

[0646] Optionally, the network device 900 further includes a communication interface for receiving and sending data.

[0647] Optionally, the processor 910 may be one or more central processing units (CPUs). In the case where 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).

[0648] 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 device, a transistor logic device, a hardware component or any combination thereof.

[0649] 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 described in detail.

[0650] 8. Example of a terminal device

[0651] Please refer to Figure 10, which is a schematic diagram of the structure of a terminal device according to an embodiment of the present application. 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.

[0652] Optionally, the memory 1020 includes but is not limited to random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) or portable read-only memory (CD-ROM), and the memory 1020 is used to store the program code executed by the terminal device 1000 and the transmitted data.

[0653] Optionally, the terminal device 1000 further includes a communication interface for receiving and sending data.

[0654] Optionally, the processor 1010 may be one or more central processing units (CPUs). When the processor 1010 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).

[0655] Optionally, the processor 1010 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 device, a transistor logic device, a hardware component or any combination thereof.

[0656] In 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 embodiment shown above, which will not be repeated here.

[0657] 9. Other related examples

[0658] Optionally, the above method embodiments may be applied to or within a network device. That is, the execution subject of the above method embodiments may be a network device, such as a chip, chip module, module, or transmitter of a network device, without specific limitation.

[0659] An embodiment of the present application also provides a chip, including a processor, a memory, and a computer program or instructions stored in the memory, wherein the processor executes the computer program or instructions to implement the steps described in the above method embodiment.

[0660] An embodiment of the present application also provides a chip module, including a transceiver component and a chip, wherein the chip includes a processor, a memory, and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps described in the above method embodiment.

[0661] An embodiment of the present application further provides a computer-readable storage medium storing a computer program or instructions, which implements the steps described in the above method embodiment when executed.

[0662] An embodiment of the present application further provides a computer program product, including a computer program or instructions, which implement the steps described in the above method embodiment when executed.

[0663] An embodiment of the present application also provides a communication system, including the above-mentioned network device and terminal device.

[0664] It should be noted that, for the above-mentioned various embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations. Those skilled in the art should know that this application is not limited by the order of the actions described, 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 required by the embodiments of the present application.

[0665] In the above embodiments, the embodiments of the present application have different focuses on the description of each embodiment. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0666] The steps of the method or algorithm described in the embodiments of the present application can be implemented in hardware or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, which can be stored in RAM, flash memory, ROM, EPROM, electrically erasable programmable read-only memory (EEPROM), registers, hard disks, mobile hard disks, CD-ROMs, 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 an integral part of the processor. The processor and 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 storage medium can also be present in a terminal device or a management device as discrete components.

[0667] Those skilled in the art will appreciate 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, they 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 device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0668] The modules / units included in the devices and products described in the above embodiments may be software modules / units, hardware modules / units, or partly software modules / units and partly hardware modules / units. For example, for the devices and products applied to or integrated in the chip, the modules / units included therein may all be implemented in the form of hardware such as circuits, or at least part of the modules / units may be implemented in the form of software programs, which run on the processor integrated inside the chip, and the remaining (if any) modules / units may be implemented in the form of hardware such as circuits; for the devices and products applied to or integrated in the chip module, the modules / units included therein may all be implemented in the form of hardware such as circuits, and different modules / units may be located in the same component (such as chip, circuit module, etc.) or different components of the chip module, or at least part of the modules / units may be It is implemented in the form of a software program, which runs on the processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in the terminal equipment, the various modules / units contained therein can be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or different components in the terminal equipment, or, at least some modules / units can be implemented in the form of a software program, which runs on the processor integrated inside the terminal equipment, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits.

[0669] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above description is only a specific implementation method of the embodiments of the present application and is not intended to limit the scope of protection 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 should be included in the scope of protection of the embodiments of the present application.

Claims

1. A communication method, characterized in that, Comprising: 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, Comprising: 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, wherein 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, Comprising: 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, Comprising: 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, characterized in that, 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, characterized in that, 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, characterized in that, 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, wherein 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 expansion 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 expansion 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 expansion 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 expansion 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, where the subset of frequency-domain positions includes a plurality of frequency-domain positions; or, Receiving a synchronization signal at a time-domain position, where the time-domain position corresponds to a beam identifier; or, Receiving 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, 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, Receiving a synchronization signal on a subset of the second combination, where the subset of the second combination includes 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, where the frequency-domain position or the time-domain position corresponds 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, where the subset of frequency-domain positions or the subset of time-domain positions corresponds to a first terminal device identifier 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 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; the frequency-domain position corresponds to a first terminal device identifier part, and the time-domain position corresponds to a second terminal device identifier part; or, the first combination corresponds 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, where the subset of the first combination includes a plurality of 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; Or, 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, the preamble part is before the wake-up signal corresponding to a terminal device group in one or more frequency-domain positions; or, the preamble part is before the wake-up signal corresponding to a terminal device group in one or more time-domain positions; or, the preamble part is before the wake-up signal corresponding to a terminal 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, where the frequency-domain position corresponds to a beam identifier; or send 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 send a synchronization signal at a time-domain position, where the time-domain position corresponds to a beam identifier; or send 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 send 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 send a synchronization signal on a subset of the second combination, where the subset of the second combination includes a plurality of second combinations.

26. The device according to claim 25, characterized in that, The first terminal device identifier part corresponds to a frequency-domain position terminal device group or a time-domain position terminal device group; or, The first terminal device identifier part corresponds to a frequency-domain position subset terminal device group or a time-domain position subset terminal device group.

27. The device according to claim 26, wherein The frequency-domain position terminal device group is a supergroup of the listening occasion terminal device group or a subgroup of the listening occasion terminal device group; or, The time-domain position terminal device group is a supergroup of the listening occasion terminal device group or a subgroup of the listening occasion terminal device group; or, The frequency-domain position subset terminal device group is a supergroup of the listening occasion terminal device group or a subgroup of the listening occasion terminal device group; or, The time-domain position subset terminal device group is a supergroup of the listening occasion terminal device group or a subgroup of the listening occasion terminal device group.

28. The device according to any one of claims 25 - 27, characterized in that, There are 2, 4, or 8 frequency-domain positions; or, There are 2, 4, or 8 time-domain positions.

29. The device according to claim 25, characterized in that, The first terminal device identification part corresponds to the frequency-domain position terminal device group.

30. The device according to claim 29, wherein The frequency-domain position terminal device group is a supergroup of the listening occasion terminal device group or a subgroup of the listening occasion terminal device group.

31. The device according to claim 25, characterized in that, The second terminal device identification part corresponds to the time-domain position terminal device group.

32. The device according to claim 31, wherein The time-domain position terminal device group is a supergroup of the listening occasion terminal device group or a subgroup of the listening occasion terminal device group.

33. The device according to claim 25, characterized in that, The third terminal device identification part corresponds to the time-frequency domain position terminal device group.

34. The device according to claim 33, characterized in that, The time-frequency domain position terminal device group is a supergroup of the listening occasion terminal device group or a subgroup of the listening occasion terminal device group.

35. The device according to claim 25, characterized in that, There are 4, 8, or 16 of the first combinations.

36. The device according to claim 25, 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 occasion 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.

37. The device according to claim 36, characterized in that, The time interval is one or more orthogonal frequency division multiplexing (OFDM) symbols.

38. The device according to claim 36, wherein The time interval is configured by the network.

39. The device according to claim 36, characterized in that, The time interval is not less than the minimum time interval reported by the terminal device.

40. The device according to any one of claims 25, 36 - 39, characterized in that, The frequency-domain resource of the preamble part is the frequency extension of the wake-up signals corresponding to one or more listening occasion terminal device groups; or, The frequency-domain resource of the preamble part is the frequency extension of the wake-up signals 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 signals 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 signals corresponding to one or more time-frequency domain position terminal device groups.

41. The device according to claim 25, characterized in that, The synchronization signal includes a low-power synchronization signal or a synchronization signal block.

42. A communication device, characterized in that, Including: A listening unit, configured to listen for wake-up signals in the frequency domain position or the time domain position, where the frequency domain position or the time domain position corresponds to the first terminal device identification part; Or, A listening unit, configured to 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; or, 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; 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 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 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 listening unit, configured to receive a preamble part, where the preamble part is before the wake-up signal corresponding to a terminal device group at one or more listening opportunities; or, the preamble part is before the wake-up signal corresponding to a terminal device group at one or more frequency-domain positions; or, the preamble part is before the wake-up signal corresponding to a terminal device group at one or more time-domain positions; or, the preamble part is before the wake-up signal corresponding to a terminal device group at one or more time-frequency domain positions; Or, A listening unit, configured to receive a synchronization signal at 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 at 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.

43. The device according to claim 42, wherein, 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 frequency-domain position subset terminal device group or a time-domain position subset terminal device group.

44. The apparatus according to claim 43, characterized in that, The 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; or, The time-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; or, The frequency-domain position subset terminal device group is a supergroup of the listening opportunity terminal device group or a subgroup of the listening opportunity terminal device group; or, The time-domain position subset terminal device group is a supergroup of the listening opportunity terminal device group or a subgroup of the listening opportunity terminal device group.

45. The device according to any one of claims 42-44, characterized in that, The number of the frequency-domain positions is 2, 4, or 8; or, The number of the time-domain positions is 2, 4, or 8.

46. The device according to claim 42, characterized in that, The first terminal device identification part corresponds to a frequency-domain position terminal device group.

47. The device according to claim 46, characterized in that, The 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.

48. The device according to claim 42, characterized in that, The second terminal device identification part corresponds to the time-domain position terminal device group.

49. The device according to claim 48, characterized in that, The time-domain position terminal device group is a supergroup of the listening occasion terminal device group or a subgroup of the listening occasion terminal device group. The apparatus according to claim 42, wherein, The third terminal device identification part corresponds to the time-frequency domain position terminal device group.

51. The device according to claim 50, characterized in that, The time-frequency domain position terminal device group is a supergroup of the listening occasion terminal device group or a subgroup of the listening occasion terminal device group.

52. The device according to claim 42, characterized in that, There are 4, 8 or 16 of the first combinations.

53. The device according to claim 42, 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 occasion 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.

54. The device according to claim 53, wherein, The time interval is one or more orthogonal frequency division multiplexing (OFDM) symbols.

55. The device according to claim 53, characterized in that, The time interval is configured by the network.

56. The apparatus according to claim 53, wherein The time interval is not less than the minimum time interval reported by the terminal device.

57. The device according to any one of claims 42, 53 - 56, characterized in that, The frequency-domain resource of the preamble part is the frequency extension of the wake-up signals corresponding to one or more listening occasion terminal device groups; or, The frequency-domain resource of the preamble part is the frequency extension of the wake-up signals 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 signals 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 signals corresponding to one or more time-frequency domain position terminal device groups.

58. The apparatus according to claim 42, wherein, The synchronization signal includes a low-power synchronization signal or a synchronization signal block.

59. 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.

60. 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.

61. 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.

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

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