Communication method and related apparatus

Abstract

Embodiments of the present application provide a communication method and a related apparatus. The method comprises: if a communication parameter is greater than a first threshold, generating a low power-wake up signal (LP-WUS) on the basis of a first bit mapping mode; or if the communication parameter is less than a second threshold, generating an LP-WUS on the basis of a second bit mapping mode, wherein the LP-WUS is used for determining whether to wake up a main receiver, and the LP-WUS carries a target bit sequence; and sending the LP-WUS. By means of the embodiments of the present application, the communication performance during LP-WUS-based communication can be improved.

Description

A communication method and related device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 6, 2024, with application number 202410174750.4 and invention name “A communication method and related device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the field of communication technology, and in particular to a communication method and related devices. Background Art

[0003] The design and development of fifth-generation (5G) mobile communication systems are targeted at mobile phones and vertical use cases. In addition to latency, reliability, and availability, user equipment (UE) energy efficiency is crucial for 5G. Currently, 5G devices may require weekly or daily charging, depending on individual usage. Typically, 5G devices consume tens of milliwatts in the radio resource control (RRC) idle or inactive state and hundreds of milliwatts in the RRC connected state. Designing for extended battery life is essential for improved energy efficiency and a better user experience. Energy efficiency is even more critical for UEs without a continuous power source, such as those using small rechargeable batteries and single-coin cells. In vertical use cases, sensors and actuators are widely deployed for monitoring, measurement, and charging. Their batteries are typically non-rechargeable and expected to last at least several years. In some IoT scenarios, such as wearable devices including smartwatches, rings, e-health devices, and medical monitoring equipment, maintaining a battery life of one to two weeks while maintaining performance is challenging with typical battery capacities. Power consumption depends on the configured wake-up cycle length. For example, in the RRC idle state, power consumption depends on the configured paging cycle. A longer paging cycle means the UE will spend more time in sleep mode, which results in energy savings. To meet the aforementioned battery life requirements, a high-value extended discontinuous reception (eDRX) cycle is expected to be used, with a large value. However, while using eDRX to achieve higher energy efficiency, it also results in higher latency, making it unsuitable for services that require both long battery life and low latency. For example, in a fire and firefighting use case, fire shutters should be closed and fire sprinklers should be activated by actuators within 1-2 seconds after sensors detect a fire. A longer eDRX cycle would not meet the latency requirements. eDRX is clearly not suitable for scenarios with high latency requirements. Therefore, research on technologies that can support both ultra-low power consumption mechanisms and ultra-low latency is crucial. Currently, UEs need to wake up periodically during each discontinuous reception (DRX) cycle. When a UE is awake but no signaling or data services are being transmitted during the awake period, it is considered an invalid awake state, and the power consumption during this period dominates the UE's overall power consumption. If the UE wakes up only when signaling or data services are required, such as when receiving its own paging message, the UE's power consumption can be significantly reduced. This energy saving is also an important means of further improving the user experience.

[0004] Higher energy savings can be achieved by introducing a separate low power (LP) wake-up receiver (WUR). The specific workflow is shown in Figure 1. First, the LP-WUR is turned on by default, and the main receiver remains off. The LP-WUR is used to receive a low power wake-up signal (WUS), which is used to trigger the wake-up of the main receiver. The main receiver is used for data transmission and reception and can be turned off or set to deep sleep unless turned on. Monitoring the power consumption of the LP-WUS depends on the LP-WUS design and the hardware modules of the wake-up receiver for signal detection and processing. This research mainly targets LP-WUS or LP-WUR for power-sensitive, small devices, including IoT use cases (such as industrial sensors, controllers) and wearable devices. Other use cases are not excluded, such as XR / smart glasses and smartphones.

[0005] How to design a signal mapping method for LP-WUS to improve communication performance is a technical problem being studied by those skilled in the art. Summary of the Invention

[0006] The embodiments of the present application disclose a communication method and related devices, which can improve communication performance.

[0007] In a first aspect, an embodiment of the present application provides a communication method, the method comprising:

[0008] If the communication parameter is greater than the first threshold, generating a low power wake-up signal LP-WUS according to a first bit mapping method; or

[0009] If the communication parameter is less than the second threshold, an LP-WUS is generated according to a second bit mapping method. The LP-WUS is used to determine whether to wake up the primary receiver. The LP-WUS carries a target bit sequence, wherein:

[0010] The first bit mapping mode represents the target bit sequence by N bit states corresponding to N groups of time segments, each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when a comparison relationship between on-off keying (OOK) signals of two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when a comparison relationship between OOK signals of two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol;

[0011] The second bit mapping mode represents a first bit sequence through M bit states corresponding to M groups of time segments, where each group of time segments in the M groups of time segments includes two consecutive time segments, wherein when a comparison relationship between on-off keying (OOK) signals of two time segments in each group of time segments in the M groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when a comparison relationship between OOK signals of two time segments in each group of time segments in the M groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol, and information carried by the time segment including the first symbol in the M groups of time segments is used to indicate a second bit sequence, and the first bit sequence and the second bit sequence are used to constitute the target bit sequence;

[0012] The LP-WUS is sent.

[0013] In the above method, the network device uses the first threshold and the second threshold to determine which mapping method to use to generate the LP-WUS. The terminal device also uses the first threshold and the second threshold to determine which method to use to decrypt the bit sequence in the LP-WUS. Therefore, the mapping methods selected by the network device and the terminal device can be consistent, avoiding the problem that the LP-WUS generated by the network device cannot be decrypted by the terminal device or requires multiple attempts to decrypt it, thereby improving the efficiency and accuracy of understanding the LP-WUS.

[0014] In combination with the first aspect, in a possible implementation manner of the first aspect, the information carried by the time segment including the first symbol includes an OFDM sequence selected from R candidate OFDM sequences, where R is an integer greater than 1.

[0015] In combination with the first aspect, or any one of the above-mentioned possible implementations of the first aspect, in another possible implementation of the first aspect, the signal amplitude or signal energy of the first symbol is greater than the preset amplitude, and the signal amplitude or signal energy of the second symbol is less than the preset amplitude.

[0016] In combination with the first aspect, or any of the foregoing possible implementations of the first aspect, in another possible implementation of the first aspect,

[0017] The first relationship includes: the OOK signal in the first time segment in each group of time segments is a first symbol, and the OOK signal in the second time segment in each group of time segments is a second symbol;

[0018] The second relationship includes: the OOK signal in the first time segment in each group of time segments is the second symbol, and the OOK signal in the second time segment in each group of time segments is the first symbol.

[0019] In combination with the first aspect, or any one of the foregoing possible implementations of the first aspect, in another possible implementation of the first aspect, the first threshold and the second threshold are the same; or the first threshold is greater than the second threshold.

[0020] In combination with the first aspect, or any of the foregoing possible implementations of the first aspect, in another possible implementation of the first aspect, the communication parameters include one or more of channel state information, signal-to-noise ratio, channel quality, signal quality, power consumption requirement, delay requirement, coverage requirement, wake-up probability requirement, signal-to-interference-and-noise ratio, and sensitivity requirement.

[0021] In combination with the first aspect, or any of the foregoing possible implementations of the first aspect, in another possible implementation of the first aspect, the method further includes:

[0022] sending first indication information, wherein the first indication information is used to indicate a rule for generating the LP-WUS, the rule being that when the communication parameter is greater than the first threshold, the LP-WUS is generated according to the first bit mapping mode; and when the communication parameter is less than the second threshold, the LP-WUS is generated according to the second bit mapping mode; or

[0023] Second indication information is sent, wherein the first indication information is used to indicate that the LP-WUS is generated according to a first bit mapping manner or is used to indicate that the LP-WUS is generated according to a second bit mapping manner.

[0024] In a second aspect, an embodiment of the present application provides a communication method, including:

[0025] Receive low power wake-up signal LP-WUS;

[0026] If the communication parameter is greater than the first threshold, demodulating the LP-WUS according to the first bit mapping method; or

[0027] If the communication parameter is less than the second threshold, the LP-WUS is demodulated according to the second bit mapping mode, the LP-WUS is used to determine whether to wake up the main receiver, and the LP-WUS carries the target bit sequence, wherein:

[0028] The first bit mapping mode represents the target bit sequence by N bit states corresponding to N groups of time segments, each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when a comparison relationship between on-off keying (OOK) signals of two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when a comparison relationship between OOK signals of two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol;

[0029] The second bit mapping method represents a first bit sequence through M bit states corresponding to M groups of time segments, where each group of time segments in the M groups of time segments includes two consecutive time segments, wherein when the comparison relationship between the on-off keying (OOK) signals of the two time segments in each group of time segments in the M groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when the comparison relationship between the OOK signals of the two time segments in each group of time segments in the M groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol, and information carried by the time segment including the first symbol in the M groups of time segments is used to indicate a second bit sequence, and the first bit sequence and the second bit sequence are used to constitute the target bit sequence.

[0030] In the above method, the network device uses the first threshold and the second threshold to determine which mapping method to use to generate the LP-WUS. The terminal device also uses the first threshold and the second threshold to determine which method to use to decrypt the bit sequence in the LP-WUS. Therefore, the mapping methods selected by the network device and the terminal device can be consistent, avoiding the problem that the LP-WUS generated by the network device cannot be decrypted by the terminal device or requires multiple attempts to decrypt it, thereby improving the efficiency and accuracy of understanding the LP-WUS.

[0031] In combination with the second aspect, in another possible implementation of the second aspect, the information carried by the time segment including the first symbol includes an OFDM sequence selected from R candidate OFDM sequences, where R is an integer greater than 1.

[0032] In combination with the second aspect, or any one of the above-mentioned possible implementations of the second aspect, in another possible implementation of the second aspect, the signal amplitude or signal energy of the first symbol is greater than the preset amplitude, and the signal amplitude or signal energy of the second symbol is less than the preset amplitude.

[0033] In combination with the second aspect, or any of the foregoing possible implementations of the second aspect, in another possible implementation of the second aspect,

[0034] The first relationship includes: the OOK signal in the first time segment in each group of time segments is a first symbol, and the OOK signal in the second time segment in each group of time segments is a second symbol;

[0035] The second relationship includes: the OOK signal in the first time segment in each group of time segments is the second symbol, and the OOK signal in the second time segment in each group of time segments is the first symbol.

[0036] In combination with the second aspect, or any one of the foregoing possible implementations of the second aspect, in another possible implementation of the second aspect, the first threshold and the second threshold are the same; or the first threshold is greater than the second threshold.

[0037] In combination with the second aspect, or any of the foregoing possible implementations of the second aspect, in another possible implementation of the second aspect, the communication parameters include one or more of channel state information, signal-to-noise ratio, channel quality, signal quality, power consumption requirement, delay requirement, coverage requirement, wake-up probability requirement, signal-to-interference-and-noise ratio, and sensitivity requirement.

[0038] In combination with the second aspect, or any of the foregoing possible implementations of the second aspect, in another possible implementation of the second aspect, the method further includes:

[0039] Receive first indication information, wherein the first indication information is used to indicate a rule for generating the LP-WUS, the rule being that when the communication parameter is greater than the first threshold, the LP-WUS is generated according to the first bit mapping method; and when the communication parameter is less than the second threshold, the LP-WUS is generated according to the second bit mapping method.

[0040] In a third aspect, the present invention provides a communication method, comprising:

[0041] A low power wake-up signal LP-WUS is generated according to the third bit mapping method. The LP-WUS is used to determine whether to wake up the main receiver. The LP-WUS carries a target bit sequence and a reserved bit sequence, wherein:

[0042] The third bit mapping method includes representing the target bit sequence by N bit states corresponding to N groups of time segments, each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when the comparison relationship between the on-off keying OOK signals of the two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when the comparison relationship between the OOK signals of the two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol, P bit states corresponding to P groups of time segments among the N groups of time segments indicate a third bit sequence, where P is a positive integer less than N, information carried by the time segments including the first symbol among the P groups of time segments is used to indicate a fourth bit sequence, and the third bit sequence and the fourth bit sequence are used to constitute the target bit sequence; F bit states corresponding to F groups of time segments other than the P groups of time segments among the N groups of time segments indicate a fifth bit sequence, information carried by the time segments including the first symbol among the F groups of time segments is used to indicate a sixth bit sequence, and the fifth bit sequence and the sixth bit sequence are used to constitute a reserved bit sequence;

[0043] The LP-WUS is sent.

[0044] In the above method, the network device generates LP-WUS by combining two bit mapping methods. Since the terminal device demodulates the target bit sequence used to determine whether to wake up the main receiver through one of the two bit mapping methods, there may still be a reserved bit sequence. The embodiment of the present application indicates the indicator, synchronization information, terminal device-related ID information and other information through the reserved bit sequence. This information can improve the communication quality. For example, the sequence detection is more sensitive to the time-frequency deviation, and synchronization information is introduced for fine synchronization to ensure that the impact of time-frequency deviation is minimized when receiving the terminal device-related ID information.

[0045] With reference to the third aspect, in a possible implementation of the third aspect, the length of the bit sequence carried by the LP-WUS is 16.

[0046] In combination with the third aspect, or any one of the above-mentioned possible implementations of the third aspect, in another possible implementation of the third aspect, the reserved bit sequence includes one or more parts of a first part, a second part and a third part, wherein the first part is used to carry first indication information, the second part is used to carry synchronization information, and the third part is used to carry the repeatedly sent target bit sequence.

[0047] In combination with the third aspect, or any of the foregoing possible implementations of the third aspect, in another possible implementation of the third aspect, the first indication information is used to indicate one or more of the following:

[0048] the number of bits occupied by at least one of the target bit sequence, the second part, and the third part;

[0049] a starting position of at least one of the target bit sequence, the second part, and the third part;

[0050] The frame format of the LP-WUS.

[0051] In combination with the third aspect, or any of the foregoing possible implementations of the third aspect, in yet another possible implementation of the third aspect, the reserved bit sequence further includes a fourth part;

[0052] The fourth part is used to carry information related to other devices, wherein the terminal type of the other device is the same as that of the terminal device, and the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the other device is different from the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the terminal device.

[0053] In combination with the third aspect, or any of the foregoing possible implementations of the third aspect, in another possible implementation of the third aspect, different LP-WUS frame formats indicate different bit sequence mapping orders in the LP-WUS, and the LP-WUS frame formats include one or more of the following:

[0054] the target bit sequence, the first part, the second part, and the third part;

[0055] the first part, the target bit sequence, the second part, and the third part;

[0056] the first part, the target bit sequence, the third part, and the second part;

[0057] the target bit sequence, the first part, the second part, the third part, and the fourth part;

[0058] The first part, the target bit sequence, the second part, the third part, and the fourth part;

[0059] The first part, the target bit sequence, the third part, the second part, and the fourth part.

[0060] In a fourth aspect, an embodiment of the present application provides a communication method, the method comprising:

[0061] Receive low power wake-up signal LP-WUS;

[0062] The LP-WUS is demodulated according to a third bit mapping manner, the LP-WUS being used to determine whether to wake up the primary receiver, the LP-WUS carrying a target bit sequence and a reserved bit sequence, wherein:

[0063] The third bit mapping method includes representing the target bit sequence by N bit states corresponding to N groups of time segments, each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when the comparison relationship between the on-off keying OOK signals of the two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when the comparison relationship between the OOK signals of the two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol, P bit states corresponding to P groups of time segments among the N groups of time segments indicate a third bit sequence, where P is a positive integer less than N, and information carried by the time segments including the first symbol in the P groups of time segments is used to indicate a fourth bit sequence, and the third bit sequence and the fourth bit sequence are used to constitute the target bit sequence; F bit states corresponding to F groups of time segments other than the P groups of time segments among the N groups of time segments indicate a fifth bit sequence, and information carried by the time segments including the first symbol in the F groups of time segments is used to indicate a sixth bit sequence, and the fifth bit sequence and the sixth bit sequence are used to constitute a reserved bit sequence.

[0064] In the above method, the network device generates LP-WUS by combining two bit mapping methods. Since the terminal device demodulates the target bit sequence used to determine whether to wake up the main receiver through one of the two bit mapping methods, there may still be a reserved bit sequence. The embodiment of the present application indicates the indicator, synchronization information, terminal device-related ID information and other information through the reserved bit sequence. This information can improve the communication quality. For example, the sequence detection is more sensitive to the time-frequency deviation, and synchronization information is introduced for fine synchronization to ensure that the impact of time-frequency deviation is minimized when receiving the terminal device-related ID information.

[0065] In combination with the fourth aspect, in another possible implementation of the fourth aspect, the length of the bit sequence carried by the LP-WUS is 16.

[0066] In combination with the fourth aspect, or any one of the above-mentioned possible implementations of the fourth aspect, in another possible implementation of the fourth aspect, the reserved bit sequence includes one or more parts of a first part, a second part, and a third part, wherein the first part is used to carry first indication information, the second part is used to carry synchronization information, and the third part is used to carry the repeatedly sent target bit sequence.

[0067] In combination with the fourth aspect, or any of the foregoing possible implementations of the fourth aspect, in another possible implementation of the fourth aspect, the first indication information is used to indicate one or more of the following:

[0068] the number of bits occupied by at least one of the target bit sequence, the second part, and the third part;

[0069] a starting position of at least one of the target bit sequence, the second part, and the third part;

[0070] The frame format of the LP-WUS.

[0071] In combination with the fourth aspect, or any of the foregoing possible implementations of the fourth aspect, in yet another possible implementation of the fourth aspect, the reserved bit sequence further includes a fourth part;

[0072] The fourth part is used to carry information related to other devices, wherein the terminal type of the other device is the same as that of the terminal device, and the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the other device is different from the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the terminal device.

[0073] In combination with the fourth aspect, or any of the foregoing possible implementations of the fourth aspect, in another possible implementation of the fourth aspect, different LP-WUS frame formats indicate different bit sequence mapping orders in the LP-WUS, and the LP-WUS frame formats include one or more of the following:

[0074] the target bit sequence, the first part, the second part, and the third part;

[0075] the first part, the target bit sequence, the second part, and the third part;

[0076] the first part, the target bit sequence, the third part, and the second part;

[0077] the target bit sequence, the first part, the second part, the third part, and the fourth part;

[0078] The first part, the target bit sequence, the second part, the third part, and the fourth part;

[0079] The first part, the target bit sequence, the third part, the second part, and the fourth part.

[0080] In a fifth aspect, an embodiment of the present application provides a communication device, which may be a network device or a device or functional module in a network device, wherein:

[0081] The communication device includes a module for executing the method described in the first aspect or any possible implementation manner of the first aspect.

[0082] Alternatively, the communication device includes a module for executing the method described in the third aspect or any possible implementation manner of the third aspect.

[0083] Alternatively, the communication device includes a processor, and the processor is used to execute the method described in the first aspect or any possible implementation manner of the first aspect.

[0084] Alternatively, the communication device includes a processor, and the processor is used to execute the method described in the third aspect or any possible implementation manner of the third aspect.

[0085] In a sixth aspect, an embodiment of the present application provides a communication device, which may be a terminal device or a device or functional module in a terminal device, wherein:

[0086] The communication device includes a module for executing the method described in the second aspect or any possible implementation manner of the second aspect.

[0087] Alternatively, the communication device includes a module for executing the method described in the fourth aspect or any possible implementation manner of the fourth aspect.

[0088] Alternatively, the communication device includes a processor, and the processor is used to execute the method described in the second aspect or any possible implementation manner of the second aspect.

[0089] Alternatively, the communication device includes a processor, and the processor is used to execute the method described in the fourth aspect or any possible implementation of the fourth aspect.

[0090] In a seventh aspect, an embodiment of the present application provides a communication device, characterized in that it includes a logic circuit and an interface, the logic circuit and the interface are coupled; the interface is used to input and / or output information, wherein:

[0091] The logic circuit is configured to execute the method described in the first aspect or any possible implementation of the first aspect, or,

[0092] The logic circuit is configured to execute the method described in the second aspect or any possible implementation of the second aspect, or,

[0093] The logic circuit is configured to execute the method described in the third aspect or any possible implementation of the third aspect, or,

[0094] The logic circuit is used to execute the method described in the fourth aspect or any possible implementation of the fourth aspect.

[0095] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, wherein:

[0096] When the computer program is executed, it can implement the method of the first aspect or any possible implementation manner of the first aspect, or,

[0097] When the computer program is executed, it can implement the method of the second aspect or any possible implementation manner of the second aspect, or,

[0098] When the computer program is executed, it can implement the third aspect or any possible implementation method of the third aspect, or,

[0099] When the computer program is executed, it can implement the method of the fourth aspect or any possible implementation manner of the fourth aspect.

[0100] In a ninth aspect, an embodiment of the present application provides a communication system, the communication system including a network device and a terminal device, wherein:

[0101] The network device is configured to execute the method described in the first aspect or any possible implementation of the first aspect, and the terminal device is configured to execute the method described in the second aspect or any possible implementation of the second aspect; or

[0102] The network device is used to execute the method described in the third aspect or any possible implementation of the third aspect, and the terminal device is used to execute the method described in the fourth aspect or any possible implementation of the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0103] The following is an introduction to the drawings used in the embodiments of this application.

[0104] FIG1 is a schematic diagram of the working principle of an LP-WUR provided in an embodiment of the present application;

[0105] FIG2 is a schematic diagram of the structure of a communication system provided in an embodiment of the present application;

[0106] FIG3 is a schematic diagram of a bit sequence indication provided by an embodiment of the present application;

[0107] FIG4 is a schematic diagram of a bit sequence indication provided by an embodiment of the present application;

[0108] FIG5 is a schematic diagram of a receiver architecture provided by an embodiment of the present application;

[0109] FIG6A is a schematic diagram of a bit sequence indication provided by an embodiment of the present application;

[0110] FIG6B is a schematic diagram of a bit sequence indication provided by an embodiment of the present application;

[0111] FIG7A is a schematic diagram of a receiver architecture provided by an embodiment of the present application;

[0112] FIG7B is a schematic diagram of a bit sequence indication provided by an embodiment of the present application;

[0113] FIG7C is a schematic diagram of a receiver architecture provided by an embodiment of the present application;

[0114] FIG7D is a schematic diagram of a bit sequence indication provided by an embodiment of the present application;

[0115] FIG7E is a schematic diagram of a bit sequence indication provided by an embodiment of the present application;

[0116] FIG8A is a schematic diagram of a bit sequence indication provided by an embodiment of the present application;

[0117] FIG8B is a schematic diagram of a bit sequence indication provided by an embodiment of the present application;

[0118] FIG8C is a schematic diagram of a bit sequence indication provided by an embodiment of the present application;

[0119] FIG9 is a flow chart of a communication method provided in an embodiment of the present application;

[0120] FIG10 is a schematic diagram of a mapping method selection method provided in an embodiment of the present application;

[0121] FIG11 is a schematic diagram of a mapping method selection method provided in an embodiment of the present application;

[0122] FIG12 is a flow chart of a communication method provided in an embodiment of the present application;

[0123] FIG13 is a schematic diagram of a LP-WUS frame format provided in an embodiment of the present application;

[0124] FIG14 is a schematic diagram of a LP-WUS frame format provided in an embodiment of the present application;

[0125] FIG15 is a schematic diagram of a LP-WUS frame format provided in an embodiment of the present application;

[0126] FIG16 is a schematic diagram of a LP-WUS frame format provided in an embodiment of the present application;

[0127] FIG17 is a schematic diagram of a LP-WUS frame format provided in an embodiment of the present application;

[0128] FIG18 is a schematic diagram of a LP-WUS frame format provided in an embodiment of the present application;

[0129] FIG19 is a schematic diagram showing an indication of ID information provided in an embodiment of the present application;

[0130] FIG20 is a schematic diagram showing an indication of ID information provided in an embodiment of the present application;

[0131] FIG21 is a schematic diagram showing an indication of ID information provided in an embodiment of the present application;

[0132] FIG22 is a schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0133] FIG23 is a schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0134] Figure 24 is a structural diagram of a network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0135] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0136] The terms "first" and "second" in the specification, claims, and drawings of this application are used only to distinguish different objects and are not used to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to the process, method, product, or device.

[0137] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It will be understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0138] In this application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three and more than three, and "and / or" is used to describe the association relationship of associated objects, indicating that three relationships can exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. "Or" means that two relationships can exist, such as only A exists, only B exists; when A and B are not mutually exclusive, it can also mean that three relationships exist, such as only A exists, only B exists, and A and B exist at the same time. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c".

[0139] The technical solutions provided in the embodiments of the present application can be applied to various communication systems, for example, the Internet of Things (IoT) system, the narrowband Internet of Things (NB-IoT) system, the long term evolution (LTE) system, the fifth generation (5G) communication system, the sixth generation (6G) communication system, and new communication systems that will emerge in the future development of communications. Among them, IoT can include, for example, the Internet of Vehicles. The communication methods in the Internet of Vehicles system can be collectively referred to as vehicle-to-everything (V2X, where X can represent anything). For example, the V2X can include: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, or vehicle-to-network (V2N) communication. In Figure 2 below, a terminal device (e.g., a Tx UE) and a terminal device (e.g., a Rx UE) can communicate using device-to-device (D2D), machine-to-machine (M2M), or V2X technologies. Optionally, the technical solutions provided in the embodiments of the present application can also be applied to non-terrestrial networks (NTN) communications (also referred to as non-terrestrial network communications).

[0140] Please refer to Figure 2, which is a schematic diagram of the structure of a communication system provided in an embodiment of the present application. The communication system includes a core network device 210, a wireless access network device 220, and at least one terminal device (such as terminal device 230 and terminal device 240 in Figure 2). The terminal device is connected to the wireless access network device via wireless communication, and the wireless access network device is connected to the core network device via wireless or wired communication. The core network device and the wireless access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device can be integrated into the same physical device, or a physical device can integrate some of the functions of the core network device and some of the functions of the wireless access network device. The terminal device can be fixed or mobile. Figure 2 is only a schematic diagram. The communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in Figure 2. The embodiments of the present application do not limit the number of core network devices, wireless access network devices, and terminal devices included in the mobile communication system.

[0141] A radio access network device is an access device that a terminal device uses to wirelessly access the mobile communication system. A radio access network device may also be referred to as an access network device, access device, RAN device, network device, etc. For example, a radio access network device may be a next-generation node B (gNB), a next-generation evolved node B (ng-eNB), or a radio access network device in 6G communications. A radio access network device may be any device with wireless transceiver capabilities, including but not limited to the base stations shown above (including base stations deployed on satellites). The radio access network device may also be a device with base station capabilities in 6G. As an example, the radio access network device may be an access node, wireless relay node, wireless backhaul node, etc. in a wireless local area network (Wi-Fi) system. As another example, the radio access network device may be a wireless controller in a cloud radio access network (CRAN) scenario. As yet another example, the radio access network device may be a wearable device or an in-vehicle device capable of providing wireless communication services. As another example, the wireless access network device may also be a small station, a transmission reception point (TRP) (or also referred to as a transmission point), etc. In systems with different wireless access technologies, the names of communication devices with wireless access network device functions may vary, and the embodiments of the present application will not list them one by one.

[0142] A terminal device is a device with wireless transceiver capabilities. The terminal device can communicate with access network equipment (or also referred to as access equipment or network equipment shown below) in a radio access network (RAN). The terminal device can also be referred to as user equipment (UE), access terminal, terminal, subscriber unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, user agent, user device, mobile station (MS), mobile terminal (MT), etc. In one possible implementation, the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted, or can also be deployed on water, including on ships, etc. In another possible implementation, the terminal device can be a handheld device with wireless communication function (such as a mobile phone), a vehicle-mounted device, a wearable device, a sensor, a terminal in the Internet of Things, a terminal in the Internet of Vehicles, a drone, a tablet computer, a computer with wireless transceiver function, VR terminal device, AR terminal device, wireless terminal in industrial control, wireless terminal in remote surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, terminal device of any form in 5G network or future network, etc., which is not limited here.

[0143] The embodiments of the present application can be applied to downlink signal transmission, uplink signal transmission, and device-to-device (D2D) signal transmission. For downlink signal transmission, the transmitting device is a wireless access network device, and the corresponding receiving device is a terminal device. For uplink signal transmission, the transmitting device is a terminal device, and the corresponding receiving device is a wireless access network device. For D2D signal transmission, the transmitting device is a terminal device, and the corresponding receiving device is also a terminal device. The signal transmission direction is not limited here.

[0144] Wireless access network equipment and terminal devices, as well as terminal devices and other terminal devices, can communicate via licensed spectrum, unlicensed spectrum, or both. Wireless access network equipment and terminal devices, as well as other terminal devices, can communicate via spectrum below 6 GHz, spectrum above 6 GHz, or both. In short, the spectrum resources used are not limited here.

[0145] One possible implementation is that the terminal device includes a main receiver, which can implement some or all of the LP-WUR functionality. For example, the module for implementing the LP-WUR functionality can be included in the main receiver. In another example, the module included in the LP-WUR is part of a template included in the main receiver. When the terminal device is in a low-power state, the terminal device can enable the LP-WUR.

[0146] One possible implementation is: the terminal device includes a main receiver and a first receiver, the main receiver can implement some functions of LP-WUR, and the first receiver can implement some functions of LP-WUR. For example, the module for implementing the LP-WUR function may include a first partial module and a second partial module, the first partial module may be included in the main receiver, and the second partial module may be included in the first receiver. For another example, the module in LP-WUR includes a first partial module and a second partial module, the first partial module is a partial module in the module included in the main receiver, and the second partial module is a partial module in the module included in the first receiver. Among them, when the terminal device is in a low power consumption state, the terminal device can turn on LP-WUR.

[0147] One possible implementation is: the terminal device includes a main receiver and an LP-WUR.

[0148] For ease of description, the above-mentioned wireless access network device can be referred to as a network device. The embodiment of the present application takes the scenario where the network device and the terminal device use LP-WUS to communicate as an example to describe the bit mapping method and related principles of LP-WUS. Specifically, waveform on-off keying (OOK) (such as OOK-1 and / or OOK-4) is introduced. LP-WUS is based on OOK modulation, and at the same time, the signal part of OOK carries one or more orthogonal frequency division multiplexing (OFDM) sequences. Furthermore, these OFDM sequences can carry information. Based on this, several bit mapping methods of LP-WUS are listed below:

[0149] A first bit mapping mode is used to represent the target bit sequence by N bit states corresponding to N groups of time segments, where each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when the comparison relationship between the on-off keying (OOK) signals of the two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when the comparison relationship between the OOK signals of the two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and in each group of time segments, one time segment includes a first symbol, and the other time segment includes a second symbol, wherein:

[0150] The first relationship includes: the OOK signal in the first time segment in each group of time segments is a first symbol, and the OOK signal in the second time segment in each group of time segments is a second symbol;

[0151] The second relationship includes: the OOK signal in the first time segment in each group of time segments is the second symbol, and the OOK signal in the second time segment in each group of time segments is the first symbol.

[0152] Optionally, the signal amplitude or signal energy of the first symbol is greater than the preset amplitude, for example, the normalized signal amplitude or normalized signal energy of the first symbol is 0.7. Optionally, the first symbol is the on portion of the OOK signal. Optionally, the first symbol is the portion with a signal in the OOK signal.

[0153] Optionally, the signal amplitude or signal energy of the second symbol is less than the preset amplitude, for example, the signal amplitude or signal energy of the second symbol is 0. Optionally, the second symbol is an off portion of the OOK signal. Optionally, the second symbol is a portion without a signal in the OOK signal.

[0154] The preset amplitude here can be a reference value for measuring signal amplitude or signal energy, determined based on empirical values ​​or prior information. The specific setting depends on the specific scenario and is not limited here. Optionally, the preset amplitude is predefined by the protocol. Optionally, the preset amplitude is sent by the network device to the terminal device via signaling.

[0155] In the embodiments of the present application, the length of a time segment can be set as needed. For example, the length of the time segment is determined based on the data rate. For example, the time segment can be 1 symbol, or multiple symbols, or 1 / 2 symbol, or 1 / 4 symbol, or 1 / 6 symbol, or 1 / 8 symbol, etc. In the drawings of the embodiments of the present application, "time segment" is simply referred to as "segment."

[0156] In addition, N is a positive integer greater than or equal to 1. For example, N=8. For example, N=16. For example, N=20.

[0157] Regarding the above-mentioned first bit mapping method, for ease of understanding, the following example is given: If, among the 8 time segments, time segment 1 is less than the preset amplitude, time segment 2 is greater than the preset amplitude, time segment 3 is greater than the preset amplitude, time segment 4 is less than the preset amplitude, time segment 5 is greater than the preset amplitude, time segment 6 is less than the preset amplitude, time segment 7 is less than the preset amplitude, and time segment 8 is greater than the preset amplitude, then time segment 1 and time segment 2 form a group of time segments, recorded as group A, time segment 3 and time segment 4 form a group of time segments, recorded as group B, and time segment 4 is greater than the preset amplitude. Segments 5 and 6 form a group of time segments, denoted as Group C. Segments 7 and 8 form a group of time segments, denoted as Group D. In this case, N is 4. It can be seen that Group A satisfies the second relationship, Group B satisfies the first relationship, Group C satisfies the first relationship, and Group D satisfies the second relationship. Therefore, assuming the first bit state is 0 and the second bit state is 1, the bit corresponding to Group A satisfying the second relationship is 1, the bit corresponding to Group B satisfying the first relationship is 0, the bit corresponding to Group C satisfying the first relationship is 0, and the bit corresponding to Group D satisfying the second relationship is 1. Therefore, according to the first bit mapping method described above, the target bit sequence represented by the four bit states corresponding to the four time segments of Groups A, B, C, and D is 1001, as shown in Figure 4.

[0158] Alternatively, the second bit state may correspond to the first relationship being met, and the first bit state may correspond to the second relationship being met. Alternatively, the first relationship and the second relationship may also be other comparative relationships, which are not limited here.

[0159] The first bit mapping method described above uses Manchester coding, but in fact, Manchester coding can also be omitted. If the first bit mapping method does not use Manchester coding, the first bit mapping method can be implemented according to the following principle: the target bit sequence is represented by signals on S time segments, and if the OOK signal in one of the S time segments is the first symbol, then the one time segment corresponds to the first bit state; if the OOK signal in one of the S time segments is the second symbol, then the one time segment corresponds to the second bit state. Wherein, S is a positive integer greater than or equal to 1.

[0160] For ease of understanding, the following example illustrates this: assuming S is equal to 4, among the four time segments, time segment 1 is greater than the preset threshold, meaning the symbol on this time segment is the first symbol; time segment 2 is less than the preset threshold, meaning the symbol on this time segment is the second symbol; time segment 3 is less than the preset threshold, meaning the symbol on this time segment is the second symbol; and time segment 4 is greater than the preset threshold, meaning the symbol on this time segment is the first symbol. Assuming the first bit state is 0 and the second bit state is 1, then the bit state corresponding to time segment 1 is 1, the bit state corresponding to time segment 2 is 0, the bit state corresponding to time segment 3 is 0, and the bit state corresponding to time segment 4 is 1. Therefore, the first bit mapping method does not employ Manchester encoding, and the target bit sequence represented by the signals on the four time segments of time segment 1, time segment 2, time segment 3, and time segment 4 is 1001, as shown in FIG3 .

[0161] In one solution, the first bit mapping method requires the receiving terminal device to have envelope detection capabilities. Figure 5 shows a schematic diagram of the receiver architecture corresponding to a terminal device with envelope detection capabilities. In Figure 5, the envelope detection module can detect the bit sequence indicated by the received LP-WUS (i.e., the input signal) and then compare the detected bit sequence with a locally stored bit sequence via the digital baseband DBB to determine whether to wake up the terminal device's main receiver. It can be understood that the terminal device pre-stores the bit sequence corresponding to waking up the main receiver. If the bit sequence indicated in the LP-WUS is the same as the stored bit sequence, the terminal device's main receiver is awakened.

[0162] In another solution, the first bit mapping method requires that the terminal device serving as the receiving end possess sequence detection capabilities. Figure 7C illustrates a receiver architecture corresponding to a terminal device with sequence detection capabilities. In Figure 7C, the DBB module can detect the bit sequence indicated by the received LP-WUS (i.e., input signal) and then compare the detected bit sequence with a locally stored bit sequence to determine whether to wake up the terminal device's primary receiver. It is understood that the terminal device pre-stores the bit sequence corresponding to waking up the primary receiver, and if the bit sequence indicated in the LP-WUS matches the stored bit sequence, the terminal device's primary receiver is awakened.

[0163] The second bit mapping method represents the first bit sequence by M bit states corresponding to M groups of time segments, and each group of time segments in the M groups of time segments includes two consecutive time segments, wherein, when the comparison relationship between the on-off keying OOK signals of the two time segments in each group of time segments in the M groups of time segments is the first relationship, each group of time segments corresponds to the first bit state, and when the comparison relationship between the OOK signals of the two time segments in each group of time segments in the M groups of time segments is the second relationship, each group of time segments corresponds to the second bit state, and one time segment in each group of time segments includes the first symbol and the other time segment includes the second symbol. Wherein M is a positive integer less than or equal to N. The concepts of the first relationship, the second relationship, the second symbol, the preset amplitude, etc. have been explained above and will not be repeated here.

[0164] To facilitate understanding, let's take an example: assuming that, among four time segments, time segment 1 is less than a preset amplitude, time segment 2 is greater than the preset amplitude, time segment 3 is greater than the preset amplitude, and time segment 4 is less than the preset amplitude, then time segments 1 and 2 form a group of time segments, denoted as Group A, and time segments 3 and 4 form a group of time segments, denoted as Group B. In this case, M equals 2. It can be seen that Group A satisfies the second relationship, and Group B satisfies the first relationship. Therefore, assuming the first bit state is 0 and the second bit state is 1, the bit state corresponding to Group A satisfying the second relationship is 1, and the bit state corresponding to Group B satisfying the first relationship is 0. Therefore, according to the above principle, the first bit sequence represented by the two bit states corresponding to Groups A and B is 10, as shown in the first bit sequence in Figure 6A.

[0165] In addition, the information carried by the time segments in the M groups of time segments that include the first symbol is used to indicate the second bit sequence. For example, if time segment 2 is greater than a preset amplitude and time segment 3 is greater than a preset amplitude, both time segments 2 and 3 include the first symbol and therefore carry information. Carrying information here can also be understood as carrying a specific sequence. For example, the first symbol carries one of multiple candidate sequences (such as an OFDM sequence). Each of the multiple candidate sequences corresponds to bit information, so carrying a particular sequence is equivalent to carrying the bit information corresponding to that sequence. For example, if time segment 2 carries the signal sequence #0, indicating that the corresponding bit state is 0, and time segment 3 carries the signal sequence #1, indicating that the corresponding bit state is 1. Therefore, the second bit sequence is 01, as shown in the second bit sequence in Figure 6A. For another example, if time segment 2 carries the signal sequence #1 among the four candidate sequences, indicating that the corresponding bit state is 01, and time segment 3 carries the signal sequence #0 among the four candidate sequences, indicating that the corresponding bit state is 00. Therefore, the second bit sequence is 0100, and so on. Optionally, the information carried by the time segment including the first symbol can be carried by an OFDM sequence selected from R candidate OFDM sequences. For example, the R OFDM sequences are sequence#0 and sequence#1. The second bit sequence carried by the time segment including the first symbol is 1 bit long. The bit state corresponding to sequence#0 is 0, and the bit state corresponding to sequence#1 is 1. If the time segment 2 including the first symbol chooses to carry sequence#0, it is equivalent to carrying bit state 0, and the time segment 3 including the first symbol chooses to carry sequence#1, it is equivalent to carrying bit state 1. Therefore, the second bit sequence indicated by the information carried by time segment 2 and time segment 3 is 01. Optionally, R is an integer greater than 1. If R is equal to 4, the second bit sequence carried by the time segment including the first symbol is 2 bits long. If R is equal to 8, the second bit sequence carried by the time segment including the first symbol is 3 bits long. And so on.

[0166] In this embodiment of the present application, the first bit sequence and the second bit sequence are used to form the target bit sequence. For example, taking the example shown in FIG. 6A above, if the first bit sequence is 10 and the second bit sequence is 01, then the target bit sequence composed of the first bit sequence 10 and the second bit sequence 01 can be 1001. The manner in which the first bit sequence and the second bit sequence are combined is not limited herein.

[0167] Optionally, the OFDM sequence is one or more of the following: zc sequence, small m sequence, PDCCH sequence, gold sequence, QPSK modulation sequence, 16QAM modulation sequence, 64QAM modulation sequence, etc.

[0168] The above second bit mapping method adopts Manchester coding, but in fact Manchester coding may not be adopted. If the second bit mapping method does not adopt Manchester coding, the second bit mapping method can be implemented according to the following principle: the first bit sequence is represented by signals on T time segments, if the OOK signal on one of the T time segments is the first symbol, then the one time segment corresponds to the first bit state, if the OOK signal on one of the T time segments is the second symbol, then the one time segment corresponds to the second bit state, and the information carried by the time segment including the first symbol on the T time segments is used to indicate the second bit sequence, and the first bit sequence and the second bit sequence are used to constitute the target bit sequence.

[0169] To facilitate understanding, let's use an example: assuming T is 2, and of the two time segments, time segment 1 is greater than a preset threshold, meaning the symbol in that time segment is the first symbol, while time segment 2 is less than the preset threshold, meaning the symbol in that time segment is the second symbol. Assuming the first bit state is 0 and the second bit state is 1, then the bit state corresponding to time segment 1 is 1, and the bit state corresponding to time segment 2 is 0, resulting in the first bit sequence being 10. T is a positive integer greater than or equal to 1.

[0170] In addition, the information carried by the time segment including the first symbol in the T time segments is used to indicate the second bit sequence. For example, time segment 1 is greater than a preset amplitude. Therefore, time segment 1 includes the first symbol and therefore carries information. For example, if time segment 1 carries a signal indicating bit state 01, then the second bit sequence is 01, as shown in Figure 6B. Optionally, the information carried by the time segment including the first symbol can be carried by an OFDM sequence selected from R candidate OFDM sequences. For example, these R OFDM sequences are sequence #0, sequence #1, sequence #2, and sequence #3, where sequence #0 corresponds to bit state 00, sequence #1 corresponds to bit state 01, sequence #2 corresponds to bit state 10, and sequence #3 corresponds to bit state 11. If time segment 1 including the first symbol chooses to carry sequence #1, it is equivalent to carrying bit state 01, and therefore the information carried by time segment 2 indicates the second bit sequence 01. Optionally, R is an integer greater than 1. If R is equal to 8, the length of the second bit sequence carried by the time segment including the first symbol is 3 bits, and so on.

[0171] In this embodiment of the present application, the first bit sequence and the second bit sequence are used to form the target bit sequence. For example, taking the example shown in FIG. 6B above, if the first bit sequence is 10 and the second bit sequence is 01, then the target bit sequence composed of the first bit sequence 10 and the second bit sequence 01 can be 1001. The manner in which the first bit sequence and the second bit sequence are combined is not limited herein.

[0172] Optionally, the OFDM sequence is one or more of the following: zc sequence, small m sequence, PDCCH sequence, gold sequence, QPSK modulation sequence, 16QAM modulation sequence, 64QAM modulation sequence, etc.

[0173] Compared with the first bit mapping method, the second bit mapping method requires less overhead to indicate the same number of bits. As shown in Figure 6B, if LP-WUS needs to indicate 4 bits, only 2 time segments are needed to complete the indication, while the case shown in Figure 3 of the first bit mapping method requires 4 time segments. Therefore, under the condition of the same time segments, the second bit mapping method occupies fewer time domain resources.

[0174] The second bit mapping method requires that the receiving terminal device possess both envelope detection and sequence detection capabilities. Figure 7A illustrates a receiver architecture corresponding to a terminal device with both envelope detection and sequence detection capabilities. In Figure 7A, the envelope detection module can detect the first bit sequence indicated by the received LP-WUS (i.e., the input signal). The digital baseband DBB can obtain a second bit sequence through sequence detection. The digital baseband DBB then further combines the first and second bit sequences to obtain the bit sequence indicated by the LP-WUS. The decision regarding whether to wake up the primary receiver is then made based on the bit sequence indicated by the LP-WUS. It is understood that the terminal device pre-stores the bit sequence corresponding to waking up the primary receiver. If the bit sequence indicated in the LP-WUS matches the stored bit sequence, a signal is output to wake up the primary receiver.

[0175] In bit mapping mode X, the target bit sequence is indicated by the information carried by the time segments including the first symbol among V time segments, where V is a positive integer. For example, time segment 2 is greater than a preset amplitude, and time segment 3 is greater than a preset amplitude. Therefore, time segments 2 and 3 both include the first symbol, and thus time segments 2 and 3 carry information. For example, time segment 2 carries a signal indicating a bit state of 10, and time segment 3 carries a signal indicating a bit state of 01. Therefore, the target bit sequence is 1001. Optionally, as shown in FIG7B , the information carried by the time segments including the first symbol can be carried by an OFDM sequence selected from V candidate OFDM sequences. For example, these V OFDM sequences are sequence #0 and sequence #1, sequence #2, and sequence #3. Sequence #0 corresponds to bit 00, sequence #1 corresponds to bit 01, sequence #2 corresponds to bit 10, and sequence #3 corresponds to bit 11. If time segment 2, including the first symbol, chooses to carry sequence #2, it is equivalent to carrying bit state 10, and if time segment 3, including the first symbol, chooses to carry sequence #1, it is equivalent to carrying bit state 01. Therefore, the target bit sequence indicated by the information carried by time segments 2 and 3 is 1001. Optionally, V is an integer greater than 1. If V is 8, the target bit sequence carried by the time segment including the first symbol is 3 bits long. The same applies to the rest.

[0176] Optionally, mapping mode X requires the receiving terminal device to have sequence detection capabilities. Figure 7C illustrates a receiver architecture corresponding to a terminal device with sequence detection capabilities. In Figure 7C, the DBB module can detect the bit sequence indicated by the received LP-WUS (i.e., input signal) and then compare the detected bit sequence with a locally stored bit sequence to determine whether to wake up the terminal device's primary receiver. It is understood that the terminal device pre-stores the bit sequence corresponding to waking up the primary receiver. If the bit sequence indicated in the LP-WUS is the same as the stored bit sequence, the terminal device's primary receiver is awakened.

[0177] In bit mapping mode W, the information carried by the time segments containing the first symbol among the W time segments represents a first bit sequence, and the information carried by the time segments containing the second symbol among the W time segments represents a second bit sequence. The target bit sequence includes the first bit sequence and the second bit sequence. W is a positive integer. Each time segment containing the second symbol carries a bit state of 00. For example, time segment 1 is less than a preset amplitude, time segment 2 is greater than the preset amplitude, time segment 3 is greater than the preset amplitude, and time segment 4 is less than the preset amplitude. Therefore, time segments 1 and 4 both contain the second symbol, and time segments 2 and 3 both contain the first symbol. Therefore, time segments 2 and 3 carry information. For example, time segment 1 indicates a bit state of 00, time segment 2 carries a signal indicating a bit state of 10, time segment 3 carries a signal indicating a bit state of 10, and time segment 4 indicates a bit state of 00. Therefore, the target bit sequence is 00101000, or 00001010, or 10100000. The order of arrangement of the bit sequences carried by the time segments corresponding to the first symbol and the second symbol may be that all bit sequences including the first segment are arranged first, and all bit sequences including the second segment are arranged last. Or the order of arrangement of the bit sequences carried by the time segments corresponding to the first symbol and the second symbol may be that all bit sequences including the second segment are arranged first, and all bit sequences including the first segment are arranged last. Or the order of arrangement of the bit sequences carried by the time segments corresponding to the first symbol and the second symbol may be that they are arranged alternately according to the order of the time segments. Optionally, as shown in FIG7D , the information carried by the time segment including the first symbol may be carried by an OFDM sequence selected from V candidate OFDM sequences, for example, these V OFDM sequences are sequence#0, sequence#1, sequence#2, and sequence#3. Among them, sequence#0 corresponds to bit 00, sequence#1 corresponds to bit 01, sequence#2 corresponds to bit 10, and sequence#3 corresponds to bit 11. If time segment 2, including the first symbol, chooses to carry sequence #2, it is equivalent to carrying bit state 10, and if time segment 3, including the first symbol, chooses to carry sequence #2, it is equivalent to carrying bit state 10. Therefore, the target bit sequence indicated by the information carried by time segments 2 and 3 is 00101000. Optionally, V is an integer greater than 1. If V is 8, the target bit sequence carried by the time segment including the first symbol is 3 bits long. The same applies to the remaining bits.

[0178] In bit mapping mode Q, the information carried by the time segments containing the first symbol in the Q groups of time segments represents the first bit sequence, and the information carried by the time segments containing the second symbol in the Q groups of time segments represents the second bit sequence. The target bit sequence includes the first bit sequence and the second bit sequence. Q is a positive integer. Each time segment containing the second symbol carries a bit state of 0. For example, time segment 1 is less than a preset amplitude, time segment 2 is greater than the preset amplitude, time segment 3 is greater than the preset amplitude, and time segment 4 is less than the preset amplitude. Therefore, time segments 1 and 4 both contain the second symbol, and time segments 2 and 3 both contain the first symbol. Therefore, time segments 2 and 3 carry information. For example, time segment 1 indicates a bit state of 0, time segment 2 carries a signal indicating a bit state of 10, time segment 3 carries a signal indicating a bit state of 10, and time segment 4 indicates a bit state of 0. Therefore, the target bit sequence is 010100, or 001010, or 101000. The order of arrangement of the bit sequences carried by the time segments corresponding to the first symbol and the second symbol may be that all bit sequences of the first segment are arranged first, and all bit sequences of the second segment are arranged last. Or the order of arrangement of the bit sequences carried by the time segments corresponding to the first symbol and the second symbol may be that all bit sequences of the second segment are arranged first, and all bit sequences of the first segment are arranged last. Or the order of arrangement of the bit sequences carried by the time segments corresponding to the first symbol and the second symbol may be that they are arranged alternately according to the order of the time segments. Optionally, as shown in FIG7E , the information carried by the time segment including the first symbol may be carried by an OFDM sequence selected from V candidate OFDM sequences, for example, these V OFDM sequences are sequence#0, sequence#1, sequence#2, and sequence#3. Among them, sequence#0 corresponds to bit 00, sequence#1 corresponds to bit 01, sequence#2 corresponds to bit 10, and sequence#3 corresponds to bit 11. If time segment 2, including the first symbol, chooses to carry sequence #2, it is equivalent to carrying bit state 10, and if time segment 3, including the first symbol, chooses to carry sequence #2, it is equivalent to carrying bit state 10. Therefore, the target bit sequence indicated by the information carried by time segments 2 and 3 is 00101000. Optionally, V is an integer greater than 1. If V is 8, the target bit sequence carried by the time segment including the first symbol is 3 bits long. The same applies to the remaining bits.

[0179] One possible implementation: If Manchester encoding is used, the use of bit mapping mode Q is implicitly indicated. The time segment including the second symbol indicates a bit state of 0. If Manchester encoding is not used, the use of bit mapping mode W is implicitly indicated. The time segment including the second symbol indicates a bit state of 00 or 000. The length of the bits carried in the second symbol is related to the length of the bits carried in the first symbol. For example, the length of the bits carried in the second symbol is the same as the length of the bits carried in the first symbol.

[0180] Optionally, the network device indicates via signaling whether the LP-WUS uses Manchester encoding. Optionally, the network device indicates via signaling whether the LP-WUS uses Manchester encoding. Optionally, the network device indicates via signaling the number of bits carried by the time segment containing the second symbol in the LP-WUS. For example, the network device indicates via signaling that the number of bits carried by the time segment containing the second symbol in the LP-WUS is 2, 1, 3, or 4. The bit state corresponding to each bit carried by the time segment containing the second symbol is 0.

[0181] Optionally, the signaling in the embodiments of the present application may be one or more of RRC signaling, MAC-CE signaling, DCI signaling, PDCCH channel, PDSCH channel, synchronization signal block SSB, channel state information reference signal CSI-RS signal, LP-WUS signal, low power synchronization signal LP-SS, etc.

[0182] In the embodiment of the present application, "sequence detection" can also be expressed as "correlation detection", "correlation calculation", "time domain correlation calculation", "frequency domain correlation calculation", etc., the purpose of which is to obtain the size (or strength) of the correlation between two sequences.

[0183] In the embodiment of the present application, the sequences carried in the time segment including the first symbol may be the same or different, as long as the sequence in the time segment where the first symbol is located is aligned with the locally stored sequence when the network device generates the LP-WUS.

[0184] In the embodiment of the present application, indication can also be replaced by "indicate", "determine", etc.

[0185] The embodiment of the present application further provides a selection scheme for the above bit mapping mode, that is, under what circumstances is the first bit mapping mode selected to generate (or demodulate) the LP-WUS, under what circumstances is the second bit mapping mode selected to generate (or demodulate) the LP-WUS, and under what circumstances is the mapping mode X selected to generate (or demodulate) the LP-WUS. The following examples are provided for illustration:

[0186] Option 1: The network device generates the LP-WUS according to different bit mapping methods based on the different receiver architectures of the terminal device. For example, if the receiver architecture of the terminal device only has an envelope detection module and does not have the ability to perform sequence detection, the LP-WUS is generated according to the first bit mapping method. For example, if the receiver architecture of the terminal device has a sequence detection module, the network device generates the LP-WUS according to the second bit mapping method or mapping method X. Accordingly, at the receiving end, if the terminal device has the sequence detection capability, the LP-WUS is demodulated according to the second bit mapping method or mapping method X or mapping method W or mapping method Q; if the terminal device does not have the sequence detection capability, the LP-WUS is demodulated according to the first bit mapping method.

[0187] Option 2: The network device comprehensively considers the first bit mapping method and the second bit mapping method, and generates the LP-WUS waveform according to the first bit mapping method by default, while carrying a specific sequence in the signal part according to the second bit mapping method. As shown in Figure 8C, assuming that LP-WUS occupies 4 segments (or symbols), the network device sends 4 segments according to the first bit mapping method. Correspondingly, at the receiving end, for a terminal device with envelope detection LP-WUS, detecting all 4 segments can obtain a 4-bit bit state 1001. For a terminal with sequence detection capability LP-WUS, only the first 2 segments need to be detected to obtain a 4-bit bit state 1001. Specifically, by detecting whether there is a signal in the first two segments (that is, whether there is the first symbol), a 2-bit bit state (1 0) can be obtained, and then the sequence of segment 1 with a signal in the first two segments (such as an OFDM sequence) can be detected to obtain an additional 2-bit bit state (0 1). In this way, it can simultaneously meet the needs of terminals with only envelope detection capability and terminals with sequence detection capability. However, for a terminal with sequence detection capability, the following two segments are redundant and do not need to be used to carry a terminal ID (UE ID) or a terminal subgroup ID (UE group ID).

[0188] This method is compatible with LP-WUS demodulation by terminal devices with and without sequence detection capabilities. However, for terminal devices with sequence detection capabilities, the required bit sequence may be decoded from the first part of the fragments to determine whether to wake up the main receiver, so the last part of the fragments is wasted.

[0189] Option 3: Network devices generate LP-WUS signals using the second bit mapping method. The receiving terminal device must have sequence detection capabilities to demodulate the LP-WUS signals. This approach simplifies network implementation and maximizes spectral efficiency.

[0190] This method requires the terminal device to decode the bit sequence in the LP-WUS through sequence detection, and the power consumption of sequence detection is relatively high.

[0191] Please refer to FIG. 9 , which shows a communication method provided in an embodiment of the present application. The method focuses on how to map bits in the LP-WUS. The method can be implemented based on the architecture shown in FIG. 2 or other architectures. The method includes but is not limited to the following steps:

[0192] Step S901: The network device generates an LP-WUS.

[0193] The network device determines the relationship between the communication parameter and the first threshold, and determines the relationship between the communication parameter and the second threshold. The communication parameters here are used to reflect the communication quality. For example, the communication parameters may include one or more of channel state information, signal-to-noise ratio (SNR), channel quality, signal quality, power consumption requirement, delay requirement, coverage requirement, wake-up probability requirement, signal-to-interference-and-noise ratio (SINR), sensitivity requirement, etc. Different parameters in the communication parameters can be considered as different types of parameters. The parameter type of the preset threshold (such as the first threshold and the second threshold) is consistent with the communication parameter. The value of the preset threshold can be obtained by the network device based on the wireless environment, prior parameters, etc. in which the terminal device is located. Optionally, in some scenarios where the environment changes slowly, such as low mobility scenarios, the cell quality changes very slowly, then the network device can choose to semi-statically or dynamically instruct the terminal device to update the preset threshold when there is a need.

[0194] The communication parameter may be obtained based on SSB, SRS, or CSI-RS measurement, or may be obtained based on a measurement result of a redesigned measurement signal.

[0195] Optionally, when the communication parameters include multiple types of parameters, the comparison of their magnitudes can be performed by comparing the communication parameters with the parameters of the same type within the preset threshold (the first threshold or the second threshold) one by one. Alternatively, multiple types of parameters within the communication parameters can be fused to obtain a composite parameter, and multiple types of parameters within the preset threshold can be fused to obtain a composite threshold, and then the composite parameter can be compared with the fused parameter. However, in the specific description, the comparison will generally be described as comparing the communication parameters with the first threshold and the second threshold.

[0196] If the communication parameter is greater than the first threshold, generating an LP-WUS through a first bit mapping method;

[0197] If the communication parameter is less than the second threshold, generating the LP-WUS by using the second bit mapping mode or mapping mode X or mapping mode Q or mapping mode W;

[0198] In an optional solution, the first threshold is equal to the second threshold. Therefore, the bit mapping mode to be selected can be determined based on the relative size of the communication parameter and the first threshold, as shown in Figure 10 (taking the communication parameter and the first threshold as SNR as an example).

[0199] In an optional solution, the first threshold TH A Greater than the second threshold TH B In this case, if the communication parameter is less than the first threshold TH A and is greater than the second threshold TH B , the most recently used bit mapping method is used to generate the LP-WUS. For example, if the network device used the first bit mapping method to generate the LP-WUS most recently, the first bit mapping method is also used to generate the LP-WUS this time. If the network device used the second bit mapping method to generate the LP-WUS most recently, the second bit mapping method is also used to generate the LP-WUS this time, as shown in FIG11 (taking the communication parameter, the first threshold, and the second threshold as SNR as an example).

[0200] Optionally, when the communication parameter is equal to the first threshold, one solution is to generate the LP-WUS through the first bit mapping method, another solution is to generate the LP-WUS through the second bit mapping method or the third bit mapping method, and of course it may also be generated through other methods.

[0201] Among them, the preset threshold (such as the first threshold and the second threshold) can be pre-defined, such as specified in the protocol; the preset threshold can also be generated by the network device according to a pre-set rule, and of course can also be obtained through other methods, which are not limited here.

[0202] Step S902: The network device sends an LP-WUS.

[0203] Step S903: The terminal device receives the LP-WUS.

[0204] Step S904: The terminal device demodulates the LP-WUS.

[0205] The terminal device also determines the relationship between the communication parameter and the first threshold, and determines the relationship between the communication parameter and the second threshold. The communication parameters used by the terminal device can also be obtained based on SSB or SRS or CSI-RS measurements, or can be obtained based on the measurement results of a redesigned measurement signal. The preset thresholds used by the terminal device (such as the first threshold and the second threshold) can be predefined, such as those specified in the protocol; the preset thresholds can also be generated by the terminal device according to a preset rule. In this case, the rules and input parameters used by the terminal device to generate the preset thresholds are the same as the rules and input parameters used by the network device to generate them; the preset thresholds can also be configured to the terminal device after being generated by the network device, such as the network device dynamically indicating to the terminal device through signaling. Of course, the preset thresholds can also be carried in a signal or channel, can be semi-statically configured, or can be periodically configured. For example, the signaling mentioned here can be RRC, or Media Access Control Control Element (MAC-CE), or downlink control information (DCI), or uplink control information (UCI). This is not limited here. The signal or channel may be a physical downlink control channel (Physical Downlink Control Channel, PDCCH) or a physical downlink shared channel (Physical Downlink Shared, PDSCH).

[0206] It can be understood that the terminal device and the network device compare the communication parameters with the preset threshold in the same manner and on the same principle.

[0207] Optionally, the network device may send first indication information to the terminal device, where the first indication information is used to indicate a rule for generating the LP-WUS, where the rule is that when the communication parameter is greater than the first threshold, the LP-WUS is generated according to the first bit mapping mode; and when the communication parameter is less than the second threshold, the LP-WUS is generated according to the second bit mapping mode.

[0208] Accordingly, based on the rule, the terminal device demodulates the LP-WUS using the first bit mapping method if the communication parameter is greater than the first threshold, and demodulates the LP-WUS using the second bit mapping method or the third bit mapping method if the communication parameter is less than the second threshold.

[0209] Optionally, the rules for generating the LP-WUS may also be pre-defined in the protocol.

[0210] In the embodiments of the present application, "demodulation" can also be replaced by descriptions such as "analysis" and "decoding".

[0211] In an optional implementation, the network device indicates which bit mapping method the terminal device should use to decode the LP-WUS. For example, the network device sends a second indication message to the terminal device, and the second indication message indicates which mapping method the terminal device should use to decode the bit sequence in the LP-WUS.

[0212] For example, the network uses a single bit indication. For example, a bit state of 0 indicates that the network device generates the LP-WUS using the bit-first mapping method of envelope detection. For example, a bit state of 0 indicates that the LP-WUS generated by the network device carries only one sequence in the signal portion. For example, a bit state of 0 indicates that the LP-WUS generated by the network device does not carry any information in the signal portion. For example, a bit state of 1 indicates that the network device generates the LP-WUS using the bit-second mapping method of sequence detection.

[0213] For example, the network uses 2 bits for indication. For example, a bit state of 00 indicates that the LP-WUS generated by the network carries only one sequence in the portion with a signal. For example, a bit state of 00 indicates that the LP-WUS generated by the network does not carry any information in the portion with a signal. For example, a bit state of 01 indicates that the LP-WUS generated by the network carries information through a sequence in the portion with a signal, and that the LP-WUS generated by the network carries two sequences in the portion with a signal. For example, a bit state of 10 indicates that the LP-WUS generated by the network carries information through a sequence in the portion with a signal, and that the LP-WUS generated by the network carries four sequences in the portion with a signal. For example, a bit state of 11 indicates that the LP-WUS generated by the network carries information through a sequence in the portion with a signal, and that the LP-WUS generated by the network carries eight sequences in the portion with a signal.

[0214] For example, the network uses 1 bit to indicate. For example, the parameter corresponding to this bit does not appear, indicating that the network uses the bit-first bit mapping method of envelope detection to generate the LP-WUS. For example, the parameter corresponding to this bit does not appear, indicating that the LP-WUS generated by the network carries only one sequence in the part with signal. For example, the parameter corresponding to this bit does not appear, indicating that the LP-WUS generated by the network does not carry information in the part with signal. For example, the parameter corresponding to this bit appears and the bit state is 0, indicating that the LP-WUS generated by the network carries information through a sequence in the part with signal, and the LP-WUS generated by the network carries two sequences in the part with signal. For example, the parameter corresponding to this bit appears and the bit state is 0, indicating that the LP-WUS generated by the network carries information through a sequence in the part with signal, and the LP-WUS generated by the network carries four sequences in the part with signal.

[0215] If the first indication information indicates that the LP-WUS is generated according to the first bit mapping method, the terminal device needs to demodulate the LP-WUS through the first bit mapping method; if the first indication information indicates that the LP-WUS is generated according to the second bit mapping method, the terminal device needs to demodulate the LP-WUS through the second bit mapping method; if other methods are indicated, the LP-WUS is demodulated through other methods.

[0216] Step S905: The terminal device wakes up the main receiver.

[0217] Specifically, if the locally stored bit sequence corresponding to waking up the main receiver is the same as the bit sequence decoded from LP-WUS, a signal is output to wake up the main receiver; if the locally stored bit sequence corresponding to waking up the main receiver is different from the bit sequence decoded from LP-WUS, the signal continues to be received through LP-WUR without waking up the main receiver.

[0218] Optionally, the method shown in Figure 9 may have a premise, that is, the terminal device has both envelope detection capability (that is, there is an envelope detection module) and sequence detection capability (that is, there is a sequence detection module); accordingly, the network device can also know the capabilities of the terminal device.

[0219] In the method described in FIG. 9 , the network device uses the first and second thresholds to determine the mapping method to use for generating the LP-WUS. The terminal device also uses the first and second thresholds to determine the method to use for decrypting the bit sequence in the LP-WUS. Therefore, the mapping methods selected by the network device and the terminal device can be consistent. This avoids the problem where the LP-WUS generated by the network device cannot be decrypted by the terminal device, or requires multiple attempts to decrypt the LP-WUS. This improves the efficiency and accuracy of decrypting the LP-WUS.

[0220] It should be noted that the scheme shown in Figure 9 describes the following: if the communication parameter is greater than the first threshold, the LP-WUS is generated using the first bit mapping method; if the communication parameter is less than the second threshold, the LP-WUS is generated using the second bit mapping method or the third bit mapping method. This is done because in some scenarios, the communication state is poor, and using the second mapping method can reduce the impact of the communication state. Therefore, the scheme shown in Figure 9 can improve the efficiency and accuracy of LP-WUS decoding. However, in some scenarios, if the segment containing the first symbol carries a large number of bits, a better communication state (such as SNR) is required for completion. Therefore, for such scenarios, the following scheme can be implemented: if the communication parameter is greater than the first threshold, the LP-WUS is generated using the second bit mapping method or the third bit mapping method; if the communication parameter is less than the second threshold, the LP-WUS is generated using the first bit mapping method. The relevant implementation details can be referred to the previous description.

[0221] Please refer to FIG. 12 , which shows a communication method provided in an embodiment of the present application. The method focuses on how to map bits in the LP-WUS. The method can be implemented based on the architecture shown in FIG. 2 or other architectures, and includes but is not limited to the following steps:

[0222] Step S1201: The network device generates an LP-WUS.

[0223] Specifically, the network device generates the LP-WUS using the above-mentioned "Option 2" method, as follows:

[0224] The network device integrates the principles of the first bit mapping method and the second bit mapping method, and generates the LP-WUS waveform by default according to the first bit mapping method, and carries a specific sequence in the signal part (that is, the part containing the first symbol) according to the second bit mapping method. Carrying a specific sequence (or carrying information) can be carrying one of multiple candidate sequences (such as an OFDM sequence). Each sequence in the multiple candidate sequences corresponds to bit information, so carrying a certain sequence is equivalent to carrying the bit information corresponding to the sequence. In the embodiment of the present application, the solution obtained by combining the first bit mapping method and the second bit mapping method can be called the third bit mapping method, as follows:

[0225] The target bit sequence is represented by N bit states corresponding to N groups of time segments, where each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when the comparison relationship between the on-off keying (OOK) signals of the two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when the comparison relationship between the OOK signals of the two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and one time segment in each group of time segments includes a first symbol and another time segment includes a second symbol. This part can refer to the description of the first bit mapping method and will not be repeated here. As shown in Figure 8A, the target bit sequence 1001 can be indicated by implicit method 1 using 8 time segments.

[0226] Optionally, the OFDM sequence is one or more of the following: zc sequence, small m sequence, PDCCH sequence, gold sequence, QPSK modulation sequence, 16QAM modulation sequence, 64QAM modulation sequence, etc.

[0227] Furthermore, the P bit states corresponding to the P groups of time segments in the N groups of time segments indicate a third bit sequence, where P is a positive integer less than N. The information carried by the time segments including the first symbol in the P groups of time segments is used to indicate a fourth bit sequence. Again, taking the example shown in FIG8A , N is equal to 8 and P is equal to 4. Therefore, the third bit sequence indicated by the four bit states corresponding to these four groups of time segments is 10, and the fourth bit sequence indicated by the information carried by the time segments including the first symbol in these four groups of time segments is 01. Furthermore, the third bit sequence and the fourth bit sequence are used to form the target bit sequence. Again, taking the example shown in FIG8A , the third bit sequence 10 and the fourth bit sequence 01 can form the target bit sequence 1001.

[0228] In addition, the F bit states corresponding to the F groups of time segments other than the P group of time segments in the N groups of time segments indicate a fifth bit sequence, and the information carried by the time segments including the first symbol in the F groups of time segments is used to indicate a sixth bit sequence, and the fifth bit sequence and the sixth bit sequence are used to constitute a reserved bit sequence; taking the case shown in Figure 8A as an example, the F groups of time segments other than the P group of time segments in the N groups of time segments are time segments 5, time segments 6, time segments 7, and time segments 8. The fifth bit sequence indicated by these time segments according to the first bit mapping method is 01, and the time segments including the first symbol in these time segments are time segments 5 and time segments 8. As can be seen from Figure 8A, the information carried by time segment 5 indicates bit 1, and the information carried by time segment 8 indicates bit 0. Therefore, the sixth bit sequence indicated by time segment 5 and time segment 8 is 10. Therefore, the reserved bit sequence composed of the fifth bit sequence and the sixth bit sequence can be 1001.

[0229] Optionally, the sixth bit sequence may also be used as a reserved bit sequence, depending on specific needs.

[0230] The third bit mapping method described above uses Manchester encoding, but in fact, Manchester encoding can also be omitted. If the third bit mapping method does not use Manchester encoding, the third bit mapping method can be implemented according to the following principle: the target bit sequence is represented by signals on S time segments. If the OOK signal on one of the S time segments is the first symbol, then the time segment corresponds to the first bit state; if the OOK signal on one of the S time segments is the second symbol, then the time segment corresponds to the second bit state. As shown in Figure 8B, S is equal to 4, and the target bit sequence indicated by the first symbol and / or the second symbol in these four time segments is 1001.

[0231] J time segments among the S time segments are used to indicate the third bit sequence, and the information carried by the time segment including the first symbol in the J time segments is used to indicate the fourth bit sequence. As shown in FIG8B , J is equal to 2, that is, the J time segments are time segment 1 and time segment 2, where the third bit sequence indicated by time segment 1 and time segment 2 through the first symbol and / or the second symbol is 10, and the time segment including the first symbol among time segment 1 and time segment 2 is time segment 1, and the information carried by time segment 1 is sequence #1, so the indicated bit is 01, that is, the fourth bit sequence is 01; the third bit sequence 10 and the fourth sequence 01 can constitute the target bit sequence 1001; therefore, the J time segments among the S time segments also indicate the target bit sequence 1001.

[0232] Of these S time segments, excluding J time segments, the remaining K time segments are time segments 3 and 4. The fifth bit sequence indicated by the first symbol and / or second symbol in time segments 3 and 4 is 01. The time segment carrying the first symbol in time segments 3 and 4 is time segment 4. It can be seen that time segment 4 carries sequence #2, so the indicated bit is 10. Therefore, the sixth bit sequence corresponding to time segments 3 and 4 is 10. Therefore, the fifth bit sequence 01 and the sixth bit sequence 10 can constitute a reserved bit sequence. Alternatively, the sixth bit sequence can be directly used as the reserved bit sequence.

[0233] The first bit sequence and the second bit sequence are used to form the target bit sequence.

[0234] It can be seen that the N groups of time segments indicate the target bit sequence through the first bit mapping method, and the P bit sequences in the N groups of bit sequences also indicate the target bit sequence through the second bit mapping method. In addition, the F bit sequences other than the P bit sequences in the N groups of bit sequences indicate the reserved bit sequence through the second bit mapping method, which can also be called the bit information indicated by the idle segment.

[0235] It can be seen from the above description that for the LP-WUS generated by the above-mentioned "method 2", for terminal devices with sequence detection capabilities, a part of the LP-WUS segments are idle (i.e., reserved bit sequences). The following focuses on how to reasonably use the idle segments (or symbols) in the LP-WUS. Optionally, the reserved bit sequence includes one or more parts of the first part, the second part, and the third part, wherein the first part is used to carry the first indication information indicator, the second part is used to carry synchronization information, and the third part is used to carry the repeatedly sent target bit sequence, which is used to indicate the terminal device ID or the group ID of the terminal device, which may be collectively referred to as ID information below. Optionally, the first indication information is used to indicate one or more of the following:

[0236] the number of bits occupied by at least one of the target bit sequence, the second part, and the third part;

[0237] a starting position of at least one of the target bit sequence, the second part, and the third part;

[0238] The frame format of the LP-WUS.

[0239] In an optional solution, the bit sequence mapping order of the LP-WUS frame format includes but is not limited to the following order:

[0240] Sequence 1: the target bit sequence, the first part, the second part, and the third part;

[0241] Sequence 2: the first part, the target bit sequence, the second part, and the third part;

[0242] Sequence 3: the first part, the target bit sequence, the third part, and the second part;

[0243] Sequence 4: the target bit sequence, the first part, the second part, the third part, and the fourth part;

[0244] Sequence 5: the first part, the target bit sequence, the second part, the third part, and the fourth part;

[0245] Sequence 6: the first part, the target bit sequence, the third part, the second part, and the fourth part.

[0246] Optionally, there may be frame format subsets, each of which includes at least two sequential frame formats. When indicating a particular frame format, the number (or identifier) ​​of the frame format in the frame format subset to which it belongs may be indicated, and the number of the frame format in the frame format subset to which it belongs may be indicated. For example, there is frame format subset #1 {sequence 1, sequence 2, sequence 3} and frame format subset #2 {sequence 4, sequence 5, sequence 6}. If frame format subset #1 is numbered 0 and frame format subset #2 is numbered 1, sequence 1 is numbered 00, sequence 2 is numbered 01, sequence 3 is numbered 10, sequence 4 is numbered 00, sequence 5 is numbered 01, and sequence 6 is numbered 10, then to indicate sequence 3, 0 may be first signaled to correspond to frame format subset #1 {sequence 1, sequence 2, sequence 3}, and then 10 may be signaled to correspond to sequence 3. The form of the signaling is not limited here, and reference may be made to the previous description.

[0247] For ease of understanding, several optional frame formats are provided below as examples:

[0248] Frame format #1: {indicator, synchronization information, ID information}, as shown in Figure 13, or,

[0249] {synchronization information, indicator, ID information}, as shown in Figure 14, where:

[0250] indicator: indicates one or more of the following information:

[0251] The number of OFDM sequences carried by the signal portion (i.e., the portion including the first symbol) in the LP-WUS;

[0252] bits used for synchronization;

[0253] The starting position of the ID information related to the terminal device carried;

[0254] Frame format;

[0255] Synchronization information: Since sequence detection is more sensitive to time-frequency offset, a portion of the LP-WUS bits is used for fine synchronization.

[0256] ID information: that is, ID information related to the terminal device, such as the identity ID of the terminal device (such as UE ID) or the subgroup ID to which the terminal device belongs (such as UE group ID).

[0257] Furthermore, when the bit information in the above-mentioned idle segment is used to indicate multiple pieces of information, these multiple pieces of information are generated through different sequences respectively. Accordingly, the terminal device also stores different sequences locally and decodes these multiple pieces of information according to different sequences. For example, the multiple pieces of information include an indicator, synchronization information, and ID information related to the terminal device. Then, the indicator, synchronization information, and ID information related to the terminal device correspond to three different sequences (there may actually be more than three). The terminal device stores these three sequences locally. Afterwards, the terminal device uses each of these three sequences to match the received signal and demodulate the transmitted information, that is, demodulates the indicator, synchronization information, and ID information related to the terminal device. It can be understood that through this indication method, the number of bits occupied by the LP-WUS can be further reduced.

[0258] Further optionally, when the indicator carries the number of sequences carried by the portion with a signal in the LP-WUS, different sequences (such as OFDM sequences) can be used to represent different quantities. For example, sequence A corresponds to the number 3. Then, when the signal in the indicator is demodulated through sequence A, it can be determined that the number of sequences carried by the portion with a signal in the LP-WUS in the indicator is 3.

[0259] Frame format #2: {indicator, synchronization information, ID information, ID information}, as shown in Figure 15; or,

[0260] {synchronization information, indicator, ID information, ID information}, as shown in Figure 16, where:

[0261] indicator: indicates one or more of the following information:

[0262] The number of OFDM sequences carried by the signal portion (including the first symbol portion) of the LP-WUS;

[0263] bits used for synchronization;

[0264] The starting position of the ID information related to the terminal device carried;

[0265] Frame format;

[0266] The number of repetitions of ID information. It should be noted that when there are multiple ID information of the same terminal device, it is considered that there is a repetition. For example, if there are only 3, the number of repetitions is 3. The repeated ID information can be the same or different (the same terminal device may correspond to a fixed ID and several temporary IDs, and these IDs are different).

[0267] Synchronization information: Since sequence detection is more sensitive to time-frequency offset, a portion of the LP-WUS bits is used for fine synchronization.

[0268] ID information: that is, ID information related to the terminal device, such as the identity ID of the terminal device (such as UE ID) or the subgroup ID to which the terminal device belongs (such as UE group ID).

[0269] Furthermore, when the bit information in the above-mentioned idle segment is used for multiple pieces of information, these multiple pieces of information are generated in corresponding different sequences. Accordingly, the terminal device also stores different sequences locally and decodes these multiple pieces of information according to different sequences. For example, the multiple pieces of information include an indicator, synchronization information, and ID information related to the terminal device. Then, the indicator, synchronization information, and ID information related to the terminal device correspond to three different sequences (there may actually be more than three). The terminal device stores these three sequences locally. Afterwards, the terminal device uses each of these three sequences to match the received signal and demodulate the transmitted information, that is, demodulates the indicator, synchronization information, and ID information related to the terminal device. It can be understood that through this indication method, the number of bits occupied by the LP-WUS can be further reduced.

[0270] Further optionally, when the indicator carries the number of additional sequences carried by the part with a signal in the LP-WUS, different sequences can be used to represent different quantities. For example, sequence A corresponds to the number 3. Then, when the signal in the indicator is demodulated through sequence A, it can be determined that the number of additional sequences carried by the part with a signal in the LP-WUS in the indicator is 3.

[0271] Further optionally, when the part of the indicator carrying the LP-WUS with a signal carries the number of repetitions of the ID information, different sequences can be used to represent different numbers. For example, sequence B corresponds to number 2. Then, when the signal in the indicator is demodulated through sequence B, it can be determined that the number of repetitions of the ID information carried by the part of the indicator carrying the LP-WUS with a signal is 2.

[0272] Frame format #3: {indicator, ID information, other device-related information}, as shown in Figure 17, or,

[0273] {indicator, synchronization information, ID information, other device-related information}, or,

[0274] {synchronization information, indicator, ID information, and other device-related information}, as shown in Figure 18, where:

[0275] indicator: indicates one or more of the following information:

[0276] The number of OFDM sequences carried by the signal portion (i.e., the portion containing the first symbol) in the LP-WUS;

[0277] bits used for synchronization;

[0278] The starting position of the ID information related to the terminal device carried;

[0279] Frame format;

[0280] The number of repetitions of ID information. It should be noted that when there are multiple ID information of the same terminal device, it is considered that there is a repetition. For example, if there are only 3, the number of repetitions is 3. The repeated ID information can be the same or different (the same terminal device may correspond to a fixed ID and several temporary IDs, and these IDs are different).

[0281] Resource factor: the ratio of resources allocated to the terminal device and other devices. The terminal device here refers to a terminal with LP-WUR and capable of receiving the above-mentioned LP-WUS, and other devices refer to devices other than the terminal device. Optionally, the other device and the above-mentioned terminal device are of the same terminal type, and the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the other device is different from the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the terminal device. Optionally, the terminal device and the other terminal are both low-power receivers, or low-power terminals, and the receiver modules of the two are the same.

[0282] Synchronization information: Since sequence detection is more sensitive to time-frequency offset, a portion of the LP-WUS bits is used for fine synchronization.

[0283] ID information: that is, ID information related to the terminal device, such as the identity ID of the terminal device (such as UE ID) or the subgroup ID to which the terminal device belongs (such as UE group ID).

[0284] Information related to other devices: such as the identity ID of other devices (such as UE ID), or the subgroup ID to which other devices belong (such as UE group ID), etc.

[0285] Furthermore, when the bit information in the above-mentioned idle segment is used to indicate multiple pieces of information, these multiple pieces of information are generated through corresponding different sequences. Accordingly, the terminal device also stores different sequences locally and decodes these multiple pieces of information according to different sequences. For example, the multiple pieces of information include an indicator, synchronization information, and ID information related to the terminal device. Then, the indicator, synchronization information, and ID information related to the terminal device correspond to three different sequences (possibly more than three). The terminal device stores these three sequences locally. Afterwards, the terminal device uses each of these three sequences to match the received signal and demodulate the transmitted information, that is, demodulates the indicator, synchronization information, and ID information related to the terminal device. It can be understood that through this indication method, the number of bits occupied by the LP-WUS can be further reduced.

[0286] Further optionally, when the indicator carries the number of additional sequences carried by the part with a signal in the LP-WUS, different sequences can be used to represent different quantities. For example, sequence A corresponds to the number 3. Then, when the signal in the indicator is demodulated through sequence A, it can be determined that the number of additional sequences carried by the part with a signal in the LP-WUS in the indicator is 3.

[0287] Further optionally, when the part of the indicator carrying the LP-WUS with a signal carries the number of repetitions of the ID information, different sequences can be used to represent different numbers. For example, sequence B corresponds to number 2. Then, when the signal in the indicator is demodulated through sequence B, it can be determined that the number of repetitions of the ID information carried by the part of the indicator carrying the LP-WUS with a signal is 2.

[0288] Further optionally, when the part of the indicator carrying the LP-WUS with a signal carries a resource factor, different sequences can be used to represent different resource factors. For example, if the resource factor corresponding to sequence C is 1:2, then when the signal in the indicator is demodulated through sequence C, it can be determined that the resource factor carried by the part of the indicator carrying the LP-WUS with a signal is 1:2.

[0289] In an optional solution, when the above-mentioned ID information includes multiple IDs, these multiple IDs can be carried in a TDMA manner.

[0290] For example, the ID information includes two terminal device IDs, such as UE ID#0 and UE ID#1, where UE ID#0 occupies symbol #4 to symbol #7, and UE ID#1 occupies symbol #8 to symbol #11.

[0291] For another example, the ID information includes the group IDs of two terminal devices, such as subgroup ID#0 and subgroup ID#1, and uses a bitmap to carry different subgroup IDs corresponding to the terminal devices. For example, there are 2 bits, and these 2 bits are independent. The bit state of the first bit indicates whether the main receiver of the terminal device belonging to subgroup ID#0 needs to be awakened, and the bit state of the second bit indicates whether the main receiver of the terminal device belonging to subgroup ID#1 needs to be awakened. 2 bits can simultaneously indicate the awakening status of terminal devices (such as UE) belonging to two subgroups.

[0292] For another example, the ID information includes the terminal device ID and the group ID of the terminal device, such as UE ID and subgroup ID.

[0293] As shown in Figure 19, the ID information in LP-WUS is repeated, and group#1 to group#16 carry the ID information of the terminal device. The advantage of this is that it can improve coverage and better adapt to OOK modulated LP-WUS.

[0294] As shown in Figure 20, the ID information in the LP-WUS carries the subgroup IDs of different groups. Different subgroup IDs (taking two as an example) are carried by groups #1 to #8 and groups #9 to #16, respectively. Different subgroup IDs are transmitted using TDMA, with bit blocks periodically transmitted, and the period is equal to the bit group period. The advantage of this is that each LP-WUS carries fewer useful bits, which is beneficial for energy saving of terminal devices and is more suitable for the configuration of LP-WUS with on-top of OOK modulation.

[0295] As shown in Figure 21, the ID information in the LP-WUS carries the subgroup IDs of different groups. Different subgroup IDs (taking two as an example) are carried by group#1 to group#8 and group#9 to group#16, respectively. Different subgroup IDs are sent using a round-robin method. This has the advantage of achieving diversity gain and ensuring terminal fairness.

[0296] Step S1202: The network device sends an LP-WUS.

[0297] Step S1203: The terminal device receives the LP-WUS.

[0298] Step S1204: The terminal device demodulates the LP-WUS.

[0299] Specifically, the terminal device decides how to demodulate the bit sequence indicated by the LP-WUS based on its own capabilities. If the terminal device does not have the sequence detection capability, it demodulates the target bit sequence through the above-mentioned first bit mapping method. If the terminal device has the sequence detection capability, it demodulates the bit sequence of a part of the fragment as the target bit sequence through the above-mentioned second bit mapping method, and demodulates the bit sequence of the remaining fragment through the second mapping method, that is, the reserved bit sequence mentioned above.

[0300] In the embodiment of the present application, the target bit sequence is used to determine whether to wake up the main receiver.

[0301] In step S1202, if the reserved bit sequence indicates information such as an indicator, synchronization information, and ID information related to the terminal device, the terminal device can also demodulate the information and perform corresponding processing based on the information.

[0302] For example, the terminal device can demodulate and obtain the information in the above-mentioned frame format #1, frame format #2 or frame format #3.

[0303] Step S1205: The terminal device wakes up the main receiver.

[0304] Specifically, if the locally stored bit sequence corresponding to waking up the main receiver is the same as the target bit sequence decoded from LP-WUS, a signal is output to wake up the main receiver; if the locally stored bit sequence corresponding to waking up the main receiver is different from the target bit sequence decoded from LP-WUS, the signal continues to be received through LP-WUR without waking up the main receiver.

[0305] In the method described in Figure 12, the network device generates LP-WUS by combining two bit mapping methods. Since the terminal device demodulates the target bit sequence used to determine whether to wake up the main receiver through one of the two bit mapping methods, there may still be a reserved bit sequence. The embodiment of the present application indicates the indicator, synchronization information, terminal device-related ID information and other information through the reserved bit sequence. This information can improve the communication quality. For example, the sequence detection is more sensitive to the time-frequency deviation, and the synchronization information is introduced for precise synchronization to ensure that the impact of the time-frequency deviation is minimized when receiving the terminal device-related ID information.

[0306] The following describes a communication device according to an embodiment of the present application.

[0307] The present application divides the functional modules of the communication device according to the above-mentioned method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in this application is schematic and is only a logical functional division. There may be other division methods in actual implementation. The communication device of the embodiment of the present application will be described in detail below with reference to Figures 22 to 24.

[0308] Figure 22 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in Figure 22, the communication device includes a processing module 1801 and a transceiver module 1802. The transceiver module 1802 can implement corresponding communication functions, and the processing module 1801 is used to process data. For example, the transceiver module 1802 can also be referred to as an interface, a communication interface, or a communication module.

[0309] In some embodiments of the present application, the communication device can be used to perform the actions performed by the network device in the above method embodiments. For example, the network device can be the device itself or a chip or functional module that can be configured in the device. The transceiver module 1802 is used to perform the operations related to the network device's transceiver in the above method embodiments, and the processing module 1801 is used to perform the operations related to the network device's processing in the above method embodiments. The processing module 1801 can perform the corresponding operations by calling a computer program or by performing the corresponding operations through a corresponding hardware circuit. The transceiver module 1802 can perform the transceiver operations independently or under the control of the processing module 1801.

[0310] Exemplarily, the communication device shown in FIG22 may be a network device or a component in a network device. The processing module 1801 and the transceiver module 1802 in the communication device may respectively perform the following operations:

[0311] If the communication parameter is greater than the first threshold, the processing module 1801 generates a low power wake-up signal LP-WUS according to the first bit mapping method; or

[0312] If the communication parameter is less than the second threshold, the processing module 1801 generates an LP-WUS according to the second bit mapping method. The LP-WUS is used to determine whether to wake up the primary receiver. The LP-WUS carries a target bit sequence, where:

[0313] The first bit mapping mode represents the target bit sequence by N bit states corresponding to N groups of time segments, each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when a comparison relationship between on-off keying (OOK) signals of two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when a comparison relationship between OOK signals of two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol;

[0314] The second bit mapping mode represents a first bit sequence through M bit states corresponding to M groups of time segments, where each group of time segments in the M groups of time segments includes two consecutive time segments, wherein when a comparison relationship between on-off keying (OOK) signals of two time segments in each group of time segments in the M groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when a comparison relationship between OOK signals of two time segments in each group of time segments in the M groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol, and information carried by the time segment including the first symbol in the M groups of time segments is used to indicate a second bit sequence, and the first bit sequence and the second bit sequence are used to constitute the target bit sequence;

[0315] The transceiver module 1802 sends the LP-WUS.

[0316] In an optional solution, the information carried by the time segment including the first symbol includes an OFDM sequence selected from R candidate OFDM sequences, where R is an integer greater than 1.

[0317] In an optional solution, the signal amplitude or signal energy of the first symbol is greater than a preset amplitude, and the signal amplitude or signal energy of the second symbol is less than the preset amplitude.

[0318] In yet another alternative,

[0319] The first relationship includes: the OOK signal in the first time segment in each group of time segments is a first symbol, and the OOK signal in the second time segment in each group of time segments is a second symbol;

[0320] The second relationship includes: the OOK signal in the first time segment in each group of time segments is the second symbol, and the OOK signal in the second time segment in each group of time segments is the first symbol.

[0321] In yet another alternative,

[0322] The first threshold and the second threshold are the same; or

[0323] The first threshold is greater than the second threshold.

[0324] In another optional solution, the communication parameters include one or more of channel state information, signal-to-noise ratio, channel quality, signal quality, power consumption requirement, delay requirement, coverage requirement, wake-up probability requirement, signal-to-interference-and-noise ratio, and sensitivity requirement.

[0325] In another alternative:

[0326] The transceiver module 1802 sends first indication information, where the first indication information is used to indicate a rule for generating the LP-WUS, where the rule is that when the communication parameter is greater than the first threshold, the LP-WUS is generated according to the first bit mapping method; and when the communication parameter is less than the second threshold, the LP-WUS is generated according to the second bit mapping method; or

[0327] The transceiver module 1802 sends second indication information, wherein the first indication information is used to indicate that the LP-WUS is generated according to the first bit mapping method or is used to indicate that the LP-WUS is generated according to the second bit mapping method.

[0328] Using Figure 22, in other embodiments of the present application, illustratively, the communication device shown in Figure 22 may be a terminal device or a component in a terminal device, and the processing module 1801 and the transceiver module 1802 in the communication device may respectively perform the following operations:

[0329] The transceiver module 1802 receives a low power consumption wake-up signal LP-WUS;

[0330] If the communication parameter is greater than the first threshold, the processing module 1801 demodulates the LP-WUS according to the first bit mapping method; or

[0331] If the communication parameter is less than the second threshold, the processing module 1801 demodulates the LP-WUS according to the second bit mapping method. The LP-WUS is used to determine whether to wake up the main receiver. The LP-WUS carries the target bit sequence, where:

[0332] The first bit mapping mode represents the target bit sequence by N bit states corresponding to N groups of time segments, each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when a comparison relationship between on-off keying (OOK) signals of two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when a comparison relationship between OOK signals of two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol;

[0333] The second bit mapping method represents a first bit sequence through M bit states corresponding to M groups of time segments, where each group of time segments in the M groups of time segments includes two consecutive time segments, wherein when the comparison relationship between the on-off keying (OOK) signals of the two time segments in each group of time segments in the M groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when the comparison relationship between the OOK signals of the two time segments in each group of time segments in the M groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol, and information carried by the time segment including the first symbol in the M groups of time segments is used to indicate a second bit sequence, and the first bit sequence and the second bit sequence are used to constitute the target bit sequence.

[0334] In an optional solution, the information carried by the time segment including the first symbol includes an OFDM sequence selected from R candidate OFDM sequences, where R is an integer greater than 1.

[0335] In an optional solution, the signal amplitude or signal energy of the first symbol is greater than a preset amplitude, and the signal amplitude or signal energy of the second symbol is less than the preset amplitude.

[0336] In one alternative,

[0337] The first relationship includes: the OOK signal in the first time segment in each group of time segments is a first symbol, and the OOK signal in the second time segment in each group of time segments is a second symbol;

[0338] The second relationship includes: the OOK signal in the first time segment in each group of time segments is the second symbol, and the OOK signal in the second time segment in each group of time segments is the first symbol.

[0339] In one alternative,

[0340] The first threshold and the second threshold are the same; or

[0341] The first threshold is greater than the second threshold.

[0342] In an optional solution, the communication parameters include one or more of channel state information, signal-to-noise ratio, channel quality, signal quality, power consumption requirement, delay requirement, coverage requirement, wake-up probability requirement, signal-to-interference-and-noise ratio, and sensitivity requirement.

[0343] In one alternative:

[0344] The transceiver module 1802 receives first indication information, wherein the first indication information is used to indicate a rule for generating the LP-WUS, wherein the rule is that when the communication parameter is greater than the first threshold, the LP-WUS is generated according to the first bit mapping method; when the communication parameter is less than the second threshold, the LP-WUS is generated according to the second bit mapping method.

[0345] Using Figure 22, in other embodiments of the present application, the communication device shown in Figure 22 may be a network device or a component in a network device, and the processing module 1801 and the transceiver module 1802 in the communication device may respectively perform the following operations:

[0346] The processing module 1801 generates a low power wake-up signal LP-WUS according to the third bit mapping method. The LP-WUS is used to determine whether to wake up the main receiver. The LP-WUS carries a target bit sequence and a reserved bit sequence, wherein:

[0347] The third bit mapping method includes representing the target bit sequence by N bit states corresponding to N groups of time segments, each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when the comparison relationship between the on-off keying OOK signals of the two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when the comparison relationship between the OOK signals of the two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol, P bit states corresponding to P groups of time segments among the N groups of time segments indicate a third bit sequence, where P is a positive integer less than N, information carried by the time segments including the first symbol among the P groups of time segments is used to indicate a fourth bit sequence, and the third bit sequence and the fourth bit sequence are used to constitute the target bit sequence; F bit states corresponding to F groups of time segments other than the P groups of time segments among the N groups of time segments indicate a fifth bit sequence, information carried by the time segments including the first symbol among the F groups of time segments is used to indicate a sixth bit sequence, and the fifth bit sequence and the sixth bit sequence are used to constitute a reserved bit sequence;

[0348] The transceiver module 1802 sends the LP-WUS.

[0349] In an optional solution, the length of the bit sequence carried by the LP-WUS is 16.

[0350] In an optional scheme, the reserved bit sequence includes one or more parts of a first part, a second part and a third part, wherein the first part is used to carry first indication information, the second part is used to carry synchronization information, and the third part is used to carry the repeatedly sent target bit sequence.

[0351] In an optional solution, the first indication information is used to indicate one or more of the following:

[0352] the number of bits occupied by at least one of the target bit sequence, the second part, and the third part;

[0353] a starting position of at least one of the target bit sequence, the second part, and the third part;

[0354] The frame format of the LP-WUS.

[0355] In an optional solution, the reserved bit sequence further includes a fourth part;

[0356] The fourth part is used to carry information related to other devices, wherein the terminal type of the other device is the same as that of the terminal device, and the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the other device is different from the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the terminal device.

[0357] In an optional solution, different LP-WUS frame formats indicate different bit sequence mapping orders in the LP-WUS, and the LP-WUS frame formats include one or more of the following:

[0358] the target bit sequence, the first part, the second part, and the third part;

[0359] the first part, the target bit sequence, the second part, and the third part;

[0360] the first part, the target bit sequence, the third part, and the second part;

[0361] the target bit sequence, the first part, the second part, the third part, and the fourth part;

[0362] The first part, the target bit sequence, the second part, the third part, and the fourth part;

[0363] The first part, the target bit sequence, the third part, the second part, and the fourth part.

[0364] Using Figure 22, in other embodiments of the present application, illustratively, the communication device shown in Figure 22 may be a terminal device or a component in a terminal device, and the processing module 1801 and the transceiver module 1802 in the communication device may respectively perform the following operations:

[0365] The transceiver module 1802 receives a low power consumption wake-up signal LP-WUS;

[0366] The processing module 1801 demodulates the LP-WUS according to the third bit mapping mode. The LP-WUS is used to determine whether to wake up the primary receiver. The LP-WUS carries a target bit sequence and a reserved bit sequence, wherein:

[0367] The third bit mapping method includes representing the target bit sequence by N bit states corresponding to N groups of time segments, each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when the comparison relationship between the on-off keying OOK signals of the two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when the comparison relationship between the OOK signals of the two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol, P bit states corresponding to P groups of time segments among the N groups of time segments indicate a third bit sequence, where P is a positive integer less than N, and information carried by the time segments including the first symbol in the P groups of time segments is used to indicate a fourth bit sequence, and the third bit sequence and the fourth bit sequence are used to constitute the target bit sequence; F bit states corresponding to F groups of time segments other than the P groups of time segments among the N groups of time segments indicate a fifth bit sequence, and information carried by the time segments including the first symbol in the F groups of time segments is used to indicate a sixth bit sequence, and the fifth bit sequence and the sixth bit sequence are used to constitute a reserved bit sequence.

[0368] In an optional solution, the length of the bit sequence carried by the LP-WUS is 16.

[0369] In an optional scheme, the reserved bit sequence includes one or more parts of a first part, a second part and a third part, wherein the first part is used to carry first indication information, the second part is used to carry synchronization information, and the third part is used to carry the repeatedly sent target bit sequence.

[0370] In an optional solution, the first indication information is used to indicate one or more of the following:

[0371] the number of bits occupied by at least one of the target bit sequence, the second part, and the third part;

[0372] a starting position of at least one of the target bit sequence, the second part, and the third part;

[0373] The frame format of the LP-WUS.

[0374] In an optional solution, the reserved bit sequence further includes a fourth part;

[0375] The fourth part is used to carry information related to other devices, wherein the terminal type of the other device is the same as that of the terminal device, and the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the other device is different from the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the terminal device.

[0376] In an optional solution, different LP-WUS frame formats indicate different bit sequence mapping orders in the LP-WUS, and the LP-WUS frame formats include one or more of the following:

[0377] the target bit sequence, the first part, the second part, and the third part;

[0378] the first part, the target bit sequence, the second part, and the third part;

[0379] the first part, the target bit sequence, the third part, and the second part;

[0380] the target bit sequence, the first part, the second part, the third part, and the fourth part;

[0381] The first part, the target bit sequence, the second part, the third part, and the fourth part;

[0382] The first part, the target bit sequence, the third part, the second part, and the fourth part.

[0383] The specific descriptions of the transceiver module and the processing module shown in the above embodiments are only examples. For the specific functions or execution steps of the transceiver module and the processing module, please refer to the above method embodiments and will not be described in detail here.

[0384] The communication device of the embodiment of the present application is described above. The following describes possible product forms of the communication device. Any product having the functions of the communication device described in FIG22 falls within the scope of protection of the embodiment of the present application.

[0385] The following description is for illustrative purposes only and does not limit the product form of the communication device of the embodiment of the present application to this description.

[0386] In one possible implementation, in the communication device shown in Figure 22, the processing module 1801 can be one or more processors, the transceiver module 1802 can be a transceiver, or the transceiver module 1802 can also be a sending module and a receiving module, the sending module can be a transmitter, and the receiving module can be a receiver, and the sending module and the receiving module are integrated into a single device, such as a transceiver. In the embodiment of the present application, the processor and the transceiver can be coupled, etc., and the embodiment of the present application does not limit the connection method between the processor and the transceiver. During the execution of the above method, the process of sending information in the above method can be the process of the processor outputting the above information. When outputting the above information, the processor outputs the above information to the transceiver so that the transceiver can transmit it. After being output by the processor, the above information may also need to undergo other processing before reaching the transceiver. Similarly, the process of receiving information in the above method can be the process of the processor receiving the input information. When the processor receives the input information, the transceiver receives the above information and inputs it into the processor. Furthermore, after the transceiver receives the above information, the above information may need to be processed further before being input into the processor.

[0387] As shown in Figure 23, the communication device 190 includes one or more processors 1920 and a transceiver 1910. For example, the transceiver 1910 is configured to execute the functions or steps implemented by the transceiver module 1802 shown in Figure 22, and the processor 1920 is configured to execute the functions or steps implemented by the processing module 1801 shown in Figure 22. For detailed descriptions of the processor 1920 and the transceiver 1910, please refer to Figure 22 or the method embodiments shown above and will not be described in detail here.

[0388] In the above-mentioned embodiments, the description of the relevant steps and information can be referred to the introduction in the above method embodiment, and will not be described in detail here.

[0389] In various implementations of the communication device shown in FIG23 , the transceiver may include a receiver and a transmitter, wherein the receiver is configured to perform a receiving function (or operation) and the transmitter is configured to perform a transmitting function (or operation). The transceiver is configured to communicate with other devices / apparatuses via a transmission medium.

[0390] Optionally, the communication device 190 may further include one or more memories 1930 for storing program instructions and / or data. The memory 1930 is coupled to the processor 1920. The coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 1920 may operate in conjunction with the memory 1930. The processor 1920 may execute program instructions stored in the memory 1930. Optionally, at least one of the above-mentioned one or more memories may be included in the processor.

[0391] The specific connection medium between the transceiver 1910, processor 1920, and memory 1930 is not limited in the embodiments of the present application. In Figure 23, the memory 1930, processor 1920, and transceiver 1910 are connected via a bus 1940. The bus is represented by a bold line in Figure 23. The connection methods between other components are merely schematic and are not limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, Figure 23 only uses a single bold line, but this does not mean that there is only one bus or only one type of bus.

[0392] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., and may implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of the present application may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor, etc.

[0393] In the embodiment of the present application, memory may include but is not limited to non-volatile memories such as hard disk drive (HDD) or solid-state drive (SSD), random access memory (RAM), erasable programmable read-only memory (EPROM), read-only memory (ROM) or portable read-only memory (CD-ROM), etc. Memory is any storage medium that can be used to carry or store program code in the form of instructions or data structures, and can be read and / or written by a computer (such as the communication device shown in the present application), but is not limited thereto. The memory in the embodiment of the present application can also be a circuit or other arbitrarily capable of realizing a storage function, for storing program instructions and / or data.

[0394] The processor 1920 is primarily used to process communication protocols and communication data, control the entire communication device, execute software programs, and process software program data. The memory 1930 is primarily used to store software programs and data. The transceiver 1910 may include a control circuit and an antenna. The control circuit is primarily used to convert baseband signals into radio frequency signals and process radio frequency signals. The antenna is primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as a touch screen, display, and keyboard, are primarily used to receive user input and output data to the user.

[0395] When the communication device is powered on, the processor 1920 can read the software program in the memory 1930, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 1920 performs baseband processing on the data to be transmitted and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves via the antenna. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal via the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1920. The processor 1920 converts the baseband signal into data and processes the data.

[0396] In another implementation, the RF circuit and antenna may be provided independently of the processor performing baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be remotely arranged independent of the communication device.

[0397] The communication device shown in the embodiment of the present application may also have more components than those in Figure 23, and the embodiment of the present application is not limited to this. The method performed by the processor and transceiver shown above is only an example. For the specific steps performed by the processor and transceiver, please refer to the method described above.

[0398] In another possible implementation, in the communication device shown in Figure 22, the processing module 1801 can be one or more logic circuits, and the transceiver module 1802 can be an input / output interface, or also called a communication interface, or an interface circuit, or an interface, etc. Alternatively, the transceiver module 1802 can also be a sending module and a receiving module, the sending module can be an output interface, and the receiving module can be an input interface, and the sending module and the receiving module are integrated into one module, such as an input / output interface. As shown in Figure 24, the communication device shown in Figure 24 includes a logic circuit 2001 and an interface 2002. That is, the above-mentioned processing module 1801 can be implemented with a logic circuit 2001, and the transceiver module 1802 can be implemented with an interface 2002. Among them, the logic circuit 2001 can be a chip, a processing circuit, an integrated circuit or a system on chip (SoC) chip, etc., and the interface 2002 can be a communication interface, an input / output interface, a pin, etc. For example, Figure 24 is illustrated using the above-mentioned communication device as a chip, and the chip includes a logic circuit 2001 and an interface 2002.

[0399] In the embodiment of the present application, the logic circuit and the interface may also be coupled to each other. The embodiment of the present application does not limit the specific connection method of the logic circuit and the interface. For example, the logic circuit 2001 can be used to execute the functions or steps implemented by the processing module 1801 shown in Figure 22, and the interface 2002 can be used to execute the functions or steps implemented by the transceiver module 1802 shown in Figure 22. For a detailed description of the logic circuit 2001 and the interface 2002, please refer to Figure 22 or the method embodiment shown above, and will not be described in detail here.

[0400] The above description of the communication device is only an example. For the specific description of the communication device shown in Figure 24, please refer to the above method embodiment or Figure 22 or Figure 23, which will not be described in detail here.

[0401] The communication device shown in the embodiment of the present application can implement the method provided in the embodiment of the present application in the form of hardware, or can implement the method provided in the embodiment of the present application in the form of software, etc., and the embodiment of the present application is not limited to this.

[0402] In the above embodiments, the description of the relevant steps and information can refer to the introduction of the above method embodiment, and will not be described in detail here. For the specific implementation of each embodiment shown in Figure 24, you can also refer to the above embodiments, and will not be described in detail here.

[0403] An embodiment of the present application also provides a communication system, which includes a network device and a terminal device, wherein the network device and the terminal device interact to execute all or part of the steps in any of the aforementioned method embodiments.

[0404] In addition, the present application also provides a computer program, which is used to implement the operations and / or processing performed by each communication device in the method provided by the present application.

[0405] The present application also provides a computer-readable storage medium having computer code stored therein. When the computer code is run on a computer, the computer executes the operations and / or processing performed by each communication device in the method provided by the present application.

[0406] The present application also provides a computer program product, which includes computer code or computer program. When the computer code or computer program is run on a computer, the operations and / or processes performed by the method provided in the present application are executed.

[0407] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or can be electrical, mechanical or other forms of connection.

[0408] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the technical effects of the solutions provided in the embodiments of the present application.

[0409] In addition, the functional modules in the various embodiments of the present application may be integrated into a processing module, or each module may exist physically separately, or two or more modules may be integrated into a single module. The above-mentioned integrated modules may be implemented in the form of hardware or software functional modules.

[0410] If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned readable storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0411] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: If the communication parameter is greater than the first threshold, generating a low power wake-up signal LP-WUS according to a first bit mapping method; or If the communication parameter is less than the second threshold, an LP-WUS is generated according to the bit mapping mode X. The LP-WUS is used to determine whether to wake up the primary receiver. The LP-WUS carries a target bit sequence, wherein: The first bit mapping mode represents the target bit sequence by N bit states corresponding to N groups of time segments, each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when a comparison relationship between on-off keying (OOK) signals of two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when a comparison relationship between OOK signals of two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol; The bit mapping mode X represents the target bit sequence by information carried by a time segment including the first symbol in V time segments, where V is a positive integer; The LP-WUS is sent.

2. The method according to claim 1, characterized in that The information carried by the time segment including the first symbol includes an OFDM sequence selected from R candidate OFDM sequences, where R is an integer greater than 1.

3. The method according to claim 1-2, characterized in that The signal amplitude or signal energy of the first symbol is greater than a preset amplitude, and the signal amplitude or signal energy of the second symbol is less than the preset amplitude.

4. The method according to any one of claims 1 to 3, characterized in that The first relationship includes: the OOK signal in the first time segment in each group of time segments is a first symbol, and the OOK signal in the second time segment in each group of time segments is a second symbol; The second relationship includes: the OOK signal in the first time segment in each group of time segments is the second symbol, and the OOK signal in the second time segment in each group of time segments is the first symbol.

5. The method according to any one of claims 1 to 4, characterized in that The first threshold and the second threshold are the same; or The first threshold is greater than the second threshold.

6. The method according to any one of claims 1 to 5, characterized in that The communication parameters include one or more of channel state information, signal-to-noise ratio, channel quality, signal quality, power consumption requirement, delay requirement, coverage requirement, wake-up probability requirement, signal-to-interference-and-noise ratio, and sensitivity requirement.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: sending first indication information, wherein the first indication information is used to indicate a rule for generating the LP-WUS, the rule being that when the communication parameter is greater than the first threshold, the LP-WUS is generated according to the first bit mapping mode; and when the communication parameter is less than the second threshold, the LP-WUS is generated according to the bit mapping mode X; or Send second indication information, wherein the second indication information is used to indicate that the LP-WUS is generated according to the first bit mapping method or to indicate that the LP-WUS is generated according to the bit mapping method X.

8. A communication method, characterized in that: include: Receive low power wake-up signal LP-WUS; If the communication parameter is greater than the first threshold, the LP-WUS is generated according to the first bit mapping method; or If the communication parameter is less than the second threshold, the LP-WUS is generated according to the bit mapping mode X, the LP-WUS is used to determine whether to wake up the primary receiver, and the LP-WUS carries the target bit sequence, wherein: The first bit mapping mode represents the target bit sequence by N bit states corresponding to N groups of time segments, each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when a comparison relationship between on-off keying (OOK) signals of two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when a comparison relationship between OOK signals of two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, and one time segment in each group of time segments includes a first symbol, and the other time segment includes a second symbol; The bit mapping mode X represents the target bit sequence through information carried by a time segment including a first symbol in V time segments, where V is a positive integer.

9. The method according to claim 8, characterized in that The information carried by the time segment including the first symbol includes an OFDM sequence selected from R candidate OFDM sequences, where R is an integer greater than 1.

10. The method according to claim 8 or 9, characterized in that The signal amplitude or signal energy of the first symbol is greater than a preset amplitude, and the signal amplitude or signal energy of the second symbol is less than the preset amplitude.

11. The method according to any one of claims 8 to 10, characterized in that: The first relationship includes: the OOK signal in the first time segment in each group of time segments is a first symbol, and the OOK signal in the second time segment in each group of time segments is a second symbol; The second relationship includes: the OOK signal in the first time segment in each group of time segments is the second symbol, and the OOK signal in the second time segment in each group of time segments is the first symbol.

12. The method according to any one of claims 8 to 11, characterized in that The first threshold and the second threshold are the same; or The first threshold is greater than the second threshold.

13. The method according to any one of claims 8 to 12, characterized in that: The communication parameters include one or more of channel state information, signal-to-noise ratio, channel quality, signal quality, power consumption requirement, delay requirement, coverage requirement, wake-up probability requirement, signal-to-interference-and-noise ratio, and sensitivity requirement.

14. The method according to any one of claims 8 to 13, characterized in that The method further comprises: receiving first indication information, wherein the first indication information is used to indicate a rule for generating the LP-WUS, the rule being that the LP-WUS is generated according to the first bit mapping mode when the communication parameter is greater than the first threshold, and is generated according to the bit mapping mode X when the communication parameter is less than the second threshold; or Second indication information is received, wherein the second indication information is used to indicate that the LP-WUS is generated according to the first bit mapping method or is used to indicate that the LP-WUS is generated according to the bit mapping method X.

15. A communication method, characterized in that: include: A low power wake-up signal LP-WUS is generated according to a fourth bit mapping method, where the LP-WUS is used to determine whether to wake up the main receiver, and the LP-WUS carries a target bit sequence and a reserved bit sequence, wherein: The fourth bit mapping manner includes representing the target bit sequence by N bit states corresponding to N groups of time segments, where each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when a comparison relationship between on-off keying (OOK) signals of two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when a comparison relationship between OOK signals of two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, one time segment in each group of time segments includes a first symbol, and another time segment includes a second symbol, and information carried by time segments including the first symbol in P groups of time segments in the N groups of time segments is used to indicate the target bit sequence, where P is a positive integer less than N; F bit states corresponding to F groups of time segments in the N groups of time segments excluding the P groups of time segments indicate a fifth bit sequence, and information carried by the time segments including the first symbol in the F groups of time segments indicates a sixth bit sequence, and the fifth bit sequence and the sixth bit sequence are used to constitute the reserved bit sequence or to represent the reserved bit sequence through the sixth bit sequence; The LP-WUS is sent.

16. The method according to claim 15, characterized in that The length of the bit sequence carried by the LP-WUS is 16.

17. The method according to claim 15 or 16, characterized in that The reserved bit sequence includes one or more parts of a first part, a second part and a third part, wherein the first part is used to carry first indication information, the second part is used to carry synchronization information, and the third part is used to carry the repeatedly sent target bit sequence.

18. The method according to claim 17, characterized in that The first indication information is used to indicate one or more of the following: the number of bits occupied by at least one of the target bit sequence, the second part, and the third part; a starting position of at least one of the target bit sequence, the second part, and the third part; The frame format of the LP-WUS.

19. The method according to claim 17, wherein The reserved bit sequence also includes a fourth part; The fourth part is used to carry information related to other devices, wherein the terminal type of the other device is the same as that of the terminal device, and the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the other device is different from the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the terminal device.

20. The method according to claim 18, wherein Different LP-WUS frame formats indicate different bit sequence mapping orders in the LP-WUS. The LP-WUS frame formats include one or more of the following: the target bit sequence, the first part, the second part, and the third part; the first part, the target bit sequence, the second part, and the third part; the first part, the target bit sequence, the third part, and the second part; the target bit sequence, the first part, the second part, the third part, and the fourth part; The first part, the target bit sequence, the second part, the third part, and the fourth part; The first part, the target bit sequence, the third part, the second part, and the fourth part.

21. A communication method, characterized in that: include: Receive low power wake-up signal LP-WUS; The LP-WUS is used to determine whether to wake up the primary receiver, and the LP-WUS carries the target bit sequence and the reserved bit sequence based on a fourth bit mapping method, wherein: The fourth bit mapping manner includes representing the target bit sequence by N bit states corresponding to N groups of time segments, where each group of time segments in the N groups of time segments includes two consecutive time segments, wherein when a comparison relationship between on-off keying (OOK) signals of two time segments in each group of time segments in the N groups of time segments is a first relationship, each group of time segments corresponds to a first bit state, and when a comparison relationship between OOK signals of two time segments in each group of time segments in the N groups of time segments is a second relationship, each group of time segments corresponds to a second bit state, one time segment in each group of time segments includes a first symbol, and another time segment includes a second symbol, and information carried by time segments including the first symbol in P groups of time segments in the N groups of time segments is used to indicate the target bit sequence, where P is a positive integer less than N; and F bit states corresponding to F groups of time segments in the N groups of time segments excluding the P groups of time segments indicate a fifth bit sequence, and information carried by time segments including the first symbol in the F groups of time segments indicates a sixth bit sequence, and the fifth bit sequence and the sixth bit sequence are used to constitute the reserved bit sequence or to represent the reserved bit sequence through the sixth bit sequence.

22. The method according to claim 21, characterized in that The length of the bit sequence carried by the LP-WUS is 16.

23. The method according to claim 21 or 22, characterized in that The reserved bit sequence includes one or more parts of a first part, a second part and a third part, wherein the first part is used to carry first indication information, the second part is used to carry synchronization information, and the third part is used to carry the repeatedly sent target bit sequence.

24. The method according to claim 23, wherein The first indication information is used to indicate one or more of the following: the number of bits occupied by at least one of the target bit sequence, the second part, and the third part; a starting position of at least one of the target bit sequence, the second part, and the third part; The frame format of the LP-WUS.

25. The method according to claim 23, wherein The reserved bit sequence also includes a fourth part; The fourth part is used to carry information related to other devices, wherein the terminal type of the other device is the same as that of the terminal device, and the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the other device is different from the fifth-generation communication system temporary mobile user identity 5G-S-TMSI of the terminal device.

26. A communication device, characterized in that: The communication device includes a module for executing the method according to any one of claims 1-7 and 15-20; or the communication device includes a processor, and the processor is used to execute the method according to any one of claims 1-7 and 15-20.

27. A communication device, characterized in that: The communication device includes a module for executing the method according to any one of claims 8-14 and 21-25; or, the communication device includes a processor, and the processor is used to execute the method according to any one of claims 8-14 and 21-25.

28. A communication device, characterized in that: comprising a logic circuit and an interface, wherein the logic circuit and the interface are coupled; The interface is used to input and / or output information, and the logic circuit is used to execute the method according to any one of claims 1 to 25.

29. A computer-readable storage medium, characterized in that The computer-readable storage medium is used to store a computer program. When the computer program is executed, the method according to any one of claims 1 to 25 is performed.

30. A communication system, characterized in that: The method comprises a network device and a terminal device, wherein the network device is used to execute the method according to any one of claims 1-7 and 15-20, and the terminal device is used to execute the method according to any one of claims 8-14 and 21-25.

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