Communication method and communication apparatus

Abstract

The present application relates to the technical field of communications, and provides a communication method and a communication apparatus. A network device flexibly selects a first root index and / or a first cyclic shift on the basis of an information bit of a wake-up signal, so as to use the first root index and / or the first cyclic shift to carry the information bit. Then, the network device may generate a first sequence on the basis of the first root index and / or the first cyclic shift, and perform modulation by using the first sequence to obtain a first signal. Then, the network device may transmit the first signal to a terminal device, so as to implement transmission of the wake-up signal.

Description

A communication method and communication device

[0001] This application claims priority to Chinese Patent Application No. 202510068858.X, filed on January 15, 2025, entitled "A Communication Method and Communication Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a communication method and communication device. Background Technology

[0003] Some user-defined devices (UEs) include a main communication unit and a wake-up receiver (WUR). During periods of low service demand, the UE disables the main communication unit and only activates the wake-up receiver to reduce power consumption. When network devices need to communicate with the UE, they can send a wake-up signal (WUS). Upon receiving the wake-up signal, the wake-up receiver in the UE triggers the main communication unit to activate, establishing a communication connection between the UE and the network device for data transmission.

[0004] Therefore, how to send a wake-up signal to enable the use of wake-up terminal devices has become an urgent problem to be solved. Summary of the Invention

[0005] This application provides a communication method and a communication device for transmitting a wake-up signal and avoiding spectrum comparison clustering.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0007] In a first aspect, this application provides a communication method applied to a network device. The network device determines a first index associated with information bits of a wake-up signal, or determines a first index associated with information bits of a wake-up signal and a first cyclic shift. The wake-up signal is used to wake up a terminal device. The network device can then generate a first sequence based on the first index. Alternatively, the network device can generate a first sequence based on the first index and the first cyclic shift. The network device then sends a first signal to the terminal device, the first signal being modulated based on the first sequence.

[0008] In this context, the first index associated with the information bits of the wake-up signal indicates that the information bits carrying the wake-up signal are represented by the first index. The first index and the first cyclic shift associated with the information bits of the wake-up signal indicate that the information bits carrying the wake-up signal are represented by the first index and the first cyclic shift.

[0009] In this application, the network device uses a first index associated with the information bits of the wake-up signal, or the first index and a first cyclic shift, to generate a first sequence, such that the first sequence carries the information bits of the wake-up signal. Then, the network device sends a first signal modulated based on the first sequence to the terminal device, thus transmitting the wake-up signal. Furthermore, it avoids spectral focusing, resulting in a flat spectrum during transmission.

[0010] Optionally, the first root index is included in a first set, which includes one or more root indices. The first cyclic shift is included in a second set, which includes one or more cyclic shifts.

[0011] In one possible design, the wake-up signal's information bits include information bit M1 and information bit M2. Information bit M1 can be carried by a first root index, and information bit M2 is carried by a first cyclic shift. The number of bits in information bit M1 is less than or equal to the number of bits N1 of the root index in the first set, and the number of bits in information bit M2 is less than or equal to the number of bits N2 of the cyclic shift in the second set. There is no overlap between information bit M1 and information bit M2. Based on this, a portion of the wake-up signal's information bits can be independently carried by the root index in the first set and the cyclic shift in the second set, improving the flexibility of the wake-up signal's information bit carrying. Furthermore, since the root index and the cyclic shift independently carry a portion of the information bits, the terminal device can determine the portion of the wake-up signal's information bits by obtaining the root index or the cyclic shift after demodulating the first signal.

[0012] Alternatively, the information bits of the aforementioned wake-up signal (i.e., information bits M1 and M2) can both be carried through the first root index, where the number of bits in the wake-up signal is less than or equal to the number of bits N1 of the root index in the first set. Based on this, when the number of bits in the wake-up signal is small, the information bits can be directly carried through the root index without needing to use cyclic shifting, thus improving the flexibility of information bit carrying. Furthermore, the terminal device can determine all the information bits of the wake-up signal by demodulating the first signal and obtaining the root index.

[0013] Alternatively, the information bits of the aforementioned wake-up signal (i.e., information bits M1 and M2) can both be carried through a first cyclic shift, where the number of bits in the wake-up signal is less than or equal to the number of bits N2 in the cyclic shift of the first set. Based on this, when the number of bits in the wake-up signal is small, the information bits can be directly carried through a cyclic shift without using a root index, thus improving the flexibility of information bit carrying. Furthermore, the terminal device can determine all the information bits of the wake-up signal by demodulating the first signal and obtaining the cyclic shift.

[0014] Optionally, information bit M1 in the aforementioned wake-up signal may be located before information bit M2, or information bit M1 may be located after information bit M2.

[0015] In one possible design, the number of root indices in the first set is greater than or equal to 2. Alternatively, the number of circular shifts in the second set is greater than or equal to 2.

[0016] In one possible design, the root index in the first set and / or the cyclic shift in the second set are predefined. Alternatively, the first set and / or the second set can be configured by the network device. Accordingly, the network device can send a first message to the terminal device, which indicates the root index in the first set and / or the cyclic shift in the second set. Based on this, flexible configuration of the root index in the first set and the cyclic shift in the second set is achieved.

[0017] In one possible design, the sorting priorities of the first and / or second sets are predefined. The sorting priority represents the priority of the information bits carrying the wake-up signal. Alternatively, the network device configures the sorting priorities of the first and / or second sets. Accordingly, the network device can send a second message to the terminal device, indicating the sorting priorities of the first and / or second sets. Based on this, flexible configuration of the sorting priorities of the root index in the first set and the cyclic shift in the second set is achieved.

[0018] Optionally, the first set has a higher sorting priority than the second set, thus allowing the root index to carry the valid information of the wake-up signal more preferentially. Alternatively, the second set has a higher sorting priority than the first set, thus allowing the circular shift to carry the valid information of the wake-up signal more preferentially.

[0019] In one possible design, if the number of bits in the wake-up signal information bits is less than or equal to the number of bits N1 of the root index in the first set, and the sorting priority of the first set is higher than that of the second set, it indicates that the root index is preferred to carry the valid information of the wake-up signal, and the root index can carry this valid information. In this case, the network device determines the first root index from the first set to generate the first sequence based on the first root index. Optionally, the network device may still use a cyclic shift (also called the first cyclic shift) to generate the first sequence. This first cyclic shift can be predefined, configured by the network device, or a cyclic shift in the first set (such as the first cyclic shift) may be used by default.

[0020] Alternatively, if the number of bits in the wake-up signal is less than or equal to the number of bits N2 in the cyclic shift in the second set, and the sorting priority of the second set is higher than the sorting priority of the first set, or if the number of bits in the information bits of the wake-up signal is greater than the number of bits N1 in the root index of the first set, or if the number of bits in the information bits of the wake-up signal is greater than the number of bits N2 in the cyclic shift in the second set, a first sequence is generated based on the first root index and the first cyclic shift.

[0021] In one possible design approach, if the number of bits in the wake-up signal is less than or equal to the number of bits N2 in the cyclic shift in the second set, and the sorting priority of the second set is higher than that of the first set, the network device can carry the information bits of the wake-up signal through the first cyclic shift instead of using the root sequence (or root index) to carry the valid information. Accordingly, the first root index can be predefined, configured by the network device, or a root index in the first set can be used as the first root index by default.

[0022] In one possible design, if the number of bits in the wake-up signal's information bits is less than or equal to the number of bits N1 of the root index in the first set, a first sequence is generated based on the first root index. The first root index carries the valid information of the wake-up signal. Furthermore, although only the first root index is used to carry the valid information of the wake-up signal, generating the first sequence still requires cyclic shifting. The cyclic shifting used can be a predefined cyclic shift, a cyclic shift configured by the network device, or a default cyclic shift from the second set, such as the first cyclic shift in the second set.

[0023] Alternatively, if the number of bits in the wake-up signal's information bits is greater than N1 bits in the root index of the first set, a first sequence is generated based on the first root index and the first cyclic shift. Both the first root index and the second cyclic shift are used to carry the valid information of the wake-up signal.

[0024] Alternatively, if the number of bits in the wake-up signal information bits is less than or equal to the number of bits N2 in the cyclic shift in the second set, a first sequence is generated based on the first cyclic shift. Furthermore, although only the first cyclic shift is used to carry the valid information of the wake-up signal, generating the first sequence still requires the use of a root. This root can be a predefined root, a root configured on the network device, or a default root from the first set, such as the first root in the second set.

[0025] Alternatively, if the number of bits in the wake-up signal's information bits is greater than N2 of the number of bits in the cyclic shift in the second set, a first sequence is generated based on the first root index and the first cyclic shift. Both the first root index and the first cyclic shift carry the wake-up signal's information bits.

[0026] In one possible design, the network device can send a third message to the terminal device. This third message is used to activate a first set or a portion of the root indices within the first set, and / or a second set or a portion of the cyclic shifts. Based on this, all or part of the root indices and cyclic shifts can be activated or cyclically shifted according to actual use, thereby achieving flexible configuration of the root index and cyclic shift sets.

[0027] Optionally, the aforementioned third message may be carried in data such as MAC-CE commands or downlink control information.

[0028] In one possible design approach, a first set is determined in the first information based on the starting root index and / or the ending root index, the first information including multiple root indices.

[0029] The first information can be predefined. Alternatively, the first information can be configured by the network device, and the network device can send a relevant message to the terminal indicating the first information. Optionally, the network device can also send a message indicating the starting root index and / or the ending root index to the terminal device, so that the terminal device can determine the first set. Alternatively, the network device can directly send a message indicating the first set to the terminal device.

[0030] In one possible design, the second set is determined in the second information based on the starting cyclic shift and / or the ending cyclic shift. The second information includes multiple cyclic shifts.

[0031] Alternatively, in the second information, the second set is determined based on the cyclic shift of the interval.

[0032] The second information can be predefined. Alternatively, the second information can be configured by the network device, and the network device can send a relevant message to the terminal indicating the second information. Optionally, the network device can also send a message indicating the starting root index and / or the ending root index to the terminal device, so that the terminal device can determine the second set. Alternatively, the network device can directly send a message indicating the second set to the terminal device.

[0033] In one possible design, when carrying the wake-up signal information bits via the first index, the value of the first cyclic shift can be predefined, or it can default to using the cyclic shift from the second set. Alternatively, the first cyclic shift can be configured by the network device, and correspondingly, the network device sends a fourth message to the terminal device, the fourth message indicating the value of the first cyclic shift.

[0034] Similarly, when carrying the wake-up signal information bits through the first cyclic shift, the value of the first root index can be predefined, or it can be the default root index from the first set. Alternatively, the first root index can be configured by the network device, and accordingly, the network device sends a message to the terminal device indicating the value of the first root index.

[0035] In one possible design approach, after determining the first root index, the network device can determine the second root index corresponding to the first root index based on the mapping relationship between the root indices of the network device and the terminal device. This second root index is then used to generate the first sequence. The bit information corresponding to the first and second root indices is identical, and the mapping relationship is determined based on a set value and an offset value. This avoids randomization interference.

[0036] In one possible design, after determining the first root index and the first cyclic shift, the network device can determine the second element corresponding to the first element based on the mapping relationship between elements between the network device and the terminal device. This second element is then used to generate the first sequence using the second root index and the second cyclic shift. The second element includes the second root index and the second cyclic shift. The bit information corresponding to the first element and the second element is the same. The mapping relationship is determined based on a set value and an offset value. This avoids randomization interference.

[0037] The first element is contained in the third set, which includes one or more elements, each of which includes a root index and a circular shift.

[0038] In one possible design approach, the aforementioned offset values ​​can be predefined or defaulted. The aforementioned settings (i.e., the number of rows and columns) can be configured by the network device. Accordingly, the network device can send a fifth message to the terminal device, which indicates the settings.

[0039] Alternatively, both the offset and the setpoint values ​​mentioned above are configured by the network device. Accordingly, the network device can send a sixth message to the terminal device, which indicates the setpoint and offset values.

[0040] Based on this, the mapping relationship between the index values ​​of terminal devices and network devices in different cells can be made different by changing the setting value and offset value.

[0041] The aforementioned settings affect the interlacing depth.

[0042] Secondly, this application provides a communication method applied to a terminal device. The terminal device receives a first signal sent by a network device, the first signal being modulated by the network device according to a first sequence. Then, the network device demodulates the first signal to obtain the first sequence. Next, the network device determines a first index, or determines the first index and a first cyclic shift, based on the first sequence. Then, the network device can obtain the information bits of a wake-up signal based on the first index, or the first index and the first cyclic shift.

[0043] Optionally, the first root index is contained in a first set, which includes one or more root indices. Alternatively, the first cyclic shift is contained in a second set, which includes one or more cyclic shifts.

[0044] Optionally, the number of root indices in the first set is greater than or equal to 2. Alternatively, the number of circular shifts in the second set is greater than or equal to 2.

[0045] In one possible design approach, the root index in the first set or the circular shift in the second set is predefined.

[0046] Alternatively, the terminal device may receive a first message sent by the network device, which indicates the root index in the first set or the circular shift in the second set.

[0047] In one possible design approach, the sorting priority of the first or second set mentioned above is predefined;

[0048] Alternatively, the terminal device may receive a second message sent by the network device, the second message indicating the sorting priority of the first set or the second set, so as to determine the sorting priority of the first set or the second set based on the second message.

[0049] In one possible design, the terminal device can also receive a third message sent by the network device, the third message being used to activate the first set or a portion of the root index in the first set, and / or, the second set or a portion of the second set, for cyclic shifting.

[0050] In one possible design, the value of the first cyclic shift is predefined, or it defaults to using the cyclic shift from the second set. Alternatively, the terminal device receives a fourth message from the network device, which indicates the value of the first cyclic shift.

[0051] In one possible design, the information bits for obtaining the wake-up signal based on the first index may include:

[0052] The terminal device obtains the wake-up signal information bits based on the bit information corresponding to the second index corresponding to the first index;

[0053] The second root index is determined by the terminal device based on the mapping relationship between the root index values ​​of the network device and the terminal device and the index value of the first root index; the bit information corresponding to the first root index and the second root index is the same; the mapping relationship is determined based on the set value and the offset value.

[0054] In one possible design, the first root index and the first circular shift are contained in the first element. The information bits for the wake-up signal, obtained based on the first root index and the first circular shift, include:

[0055] The terminal device can obtain the wake-up signal information bits based on the second root index and the bit information corresponding to the second circular shift in the second element corresponding to the first element.

[0056] The second element is determined based on the mapping relationship between the index values ​​of elements between network devices and terminal devices and the index value of the first element; the bit information corresponding to the first element and the second element is the same; the mapping relationship is determined based on the set value and the offset value.

[0057] The first element is contained in the third set, which contains one or more elements, each of which includes a root index and a circular shift.

[0058] In one possible design approach, the aforementioned offset value is predefined or a default value is used. The terminal device can receive a fifth message sent by the network device, which indicates the set value;

[0059] Alternatively, the terminal device receives a sixth message sent by the network device, which indicates the set value and offset value.

[0060] Thirdly, this application provides a communication device, including a module for performing the communication method as described in the first aspect above; and / or, a module for performing the communication method as described in the second aspect above.

[0061] Among them, the communication device can be used as a network device or a terminal device.

[0062] Fourthly, embodiments of this application provide a communication system that may include a network device and a terminal device. The network device is used to perform the communication method described in the first aspect above, and / or the terminal device is used to perform the communication method described in the second aspect above.

[0063] Fifthly, this application provides a communication device, comprising: at least one processor and an interface circuit, wherein the interface circuit is configured to receive signals from other communication devices outside the communication device and transmit them to the processor, or to send signals from the processor to other communication devices outside the communication device, wherein the processor is configured to implement the communication methods described in the first and / or second aspects above through logic circuits or execution code instructions.

[0064] In a sixth aspect, this application provides a computer-readable storage medium including a computer program or instructions that, when executed on a computer, cause the computer to perform the communication methods described in the first and / or second aspects above.

[0065] In a seventh aspect, this application provides a chip, including: an interface circuit and a logic circuit, wherein the interface circuit is used to receive signals from other chips outside the chip and transmit them to the logic circuit, or to send signals from the logic circuit to other chips outside the chip, and the logic circuit is used to implement the communication methods described in the first aspect and / or the second aspect above.

[0066] Eighthly, this application provides a computer program product comprising: a computer program or instructions that, when executed on a computer, cause the computer to perform the communication methods described in the first and / or second aspects above.

[0067] It is understood that any of the communication devices, communication systems, chips, computer-readable storage media, or computer program products provided above can be applied to the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects described in the corresponding methods. Furthermore, the communication method provided in the second aspect can also refer to the relevant descriptions and beneficial effects in the communication method provided in the first aspect, and will not be repeated here. Attached Figure Description

[0068] Figure 1 is a schematic diagram of a communication system provided in an embodiment of this application;

[0069] Figure 2A is a schematic diagram of a standby time provided in an embodiment of this application;

[0070] Figure 2B is a schematic diagram of the structure of a terminal device provided in an embodiment of this application;

[0071] Figure 3 is a schematic diagram of a signal provided in an embodiment of this application;

[0072] Figure 4 is a schematic diagram of an OOK modulation provided in an embodiment of this application;

[0073] Figure 5A is a schematic diagram of an OFDM symbol provided in an embodiment of this application;

[0074] Figure 5B is a schematic diagram of an OFDM symbol provided in an embodiment of this application;

[0075] Figure 6 is a flowchart illustrating a communication method provided in an embodiment of this application;

[0076] Figure 7A is a schematic diagram of object determination provided in an embodiment of this application;

[0077] Figure 7B is a schematic diagram of object determination provided in an embodiment of this application;

[0078] Figure 7C is a schematic diagram of object determination provided in an embodiment of this application;

[0079] Figure 8 is a schematic diagram of a mapping relationship provided in an embodiment of this application;

[0080] Figure 9 is a schematic diagram of a mapping relationship provided in an embodiment of this application;

[0081] Figure 10 is a schematic flowchart of a communication method provided in an embodiment of this application. Detailed Implementation

[0082] In the description of this application, unless otherwise stated, " / " indicates that the objects before and after are in an "or" relationship. For example, A / B can mean A or B. "And / or" in this application is merely a description of the relationship between the related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. A and B can be singular or plural.

[0083] In the description of this application, unless otherwise stated, "multiple" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0084] Furthermore, to facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first," "second," "1," "2," "A," "B," and "C" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first," "second," etc., do not limit the quantity or execution order, and that the terms "first," "second," etc., are not necessarily different.

[0085] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner to facilitate understanding.

[0086] It is understood that the term "embodiment" used throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, various embodiments throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It is understood that in the various embodiments of this application, the sequence number of each process does not imply the order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0087] It is understood that in this application, "...when" and "if" both refer to the corresponding processing that will be carried out under certain objective circumstances, and are not limited to a specific time, nor do they require a judgment action to be performed during implementation, nor do they imply any other limitations.

[0088] It is understood that some optional features in the embodiments of this application can be implemented independently in certain scenarios without relying on other features, such as the current solution on which they are based, to solve the corresponding technical problems and achieve the corresponding effects. Alternatively, they can be combined with other features as needed in certain scenarios. Correspondingly, the apparatus given in the embodiments of this application can also implement these features or functions, which will not be elaborated here.

[0089] In this application, unless otherwise specified, the same or similar parts between the various embodiments can be referred to each other. Unless otherwise specified or logically conflicting, the terminology and / or descriptions between different embodiments are consistent and can be mutually referenced. Different embodiments can be combined to form new embodiments based on their inherent logical relationships. The following descriptions of the embodiments of this application do not constitute a limitation on the scope of protection of this application.

[0090] To facilitate understanding of the embodiments of this application, the following is a brief explanation of several basic concepts involved in the embodiments of this application.

[0091] 1. Amplitude shift keying (ASK)

[0092] If the possible states of a digitally modulated signal correspond one-to-one with binary information symbols or their corresponding baseband signal states, then the modulated signal is called a binary digitally modulated signal. Keying using binary information symbols is called binary amplitude shift keying, denoted by ASK.

[0093] ASK is a relatively simple modulation method, equivalent to amplitude modulation in analog signals, except that it multiplies the carrier frequency signal with binary digits. Amplitude shift treats frequency and phase as constants, while amplitude is the variable; information bits are transmitted through the amplitude of the carrier wave.

[0094] 2. On-Off Keying (OOK) Modulation

[0095] OOK modulation is binary amplitude shift keying. OOK is a special case of ASK modulation, using a unipolar non-return-to-zero code sequence to control the on and off of a sinusoidal carrier. The modulation principle of OOK is to control one amplitude to 0 and the other amplitude to non-zero.

[0096] 3. ZC (Zadoff-Chu) sequence

[0097] The ZC sequence has a constant envelope property; it is essentially an exponential sequence with base e. Each sequence value represents a point on the unit circle, and each point only changes the phase.

[0098] This application provides a communication system, as shown in Figure 1, which includes network equipment and terminal equipment. A network device is a means deployed in a radio access network to provide wireless communication functions for terminal equipment. Network equipment can include various forms of macro base stations, micro base stations (also called small stations), relay stations, access points, etc. In systems employing different radio access technologies, the name of the network device may differ, such as a base transceiver station (BTS) in a Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) network, a node B (NB) in Wideband Code Division Multiple Access (WCDMA), and an evolved Node B (eNB) in Long Term Evolution (LTE). The network device can also be a radio controller in a cloud radio access network (CRAN) scenario. Network equipment can also be base station equipment in fifth-generation (5G) mobile communication systems or next-generation wireless communication networks, or network equipment in future evolved Public Land Mobile Network (PLMN) networks. Network equipment can also be wearable devices or vehicle-mounted devices. Network equipment can also be transmission and reception points (TRPs).

[0099] The aforementioned terminals (also known as terminal devices) can be environmental IoT devices, including various handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem with wireless communication capabilities. Terminals can be mobile stations (MS), subscriber units, cellular phones, smartphones, wireless data cards, personal digital assistant (PDA) computers, tablet computers, wireless modems, handsets, laptop computers, machine-type communication (MTC) terminals, etc.

[0100] The aforementioned communication systems can be applied to Long Term Evolution (LTE) systems, Universal Mobile Telecommunications System (UMTS) systems, Code Division Multiple Access (CDMA) systems, Wireless Local Area Network (WLAN) systems, or the Fifth Generation (5G) systems or next-generation wireless communication systems, etc.

[0101] A key performance indicator for terminals (such as IoT terminals) is device power consumption. Since Rel-16, the 3rd Generation Partnership Project (3GPP) has been researching energy-saving technologies for 5th-generation (5G) terminal devices. Table 1 shows the energy-saving characteristics of standardized terminals.

[0102] Table 1

[0103] However, due to limitations such as device size, devices (such as smartwatches) are typically equipped with small-capacity batteries (e.g., 200-600mAh). Referring to Table 2, which shows the idle power consumption and standby time of smartwatches, the standby time of smartwatches (such as 5G smartwatches) is relatively short, still far from the target standby time (e.g., 2 weeks). In practical applications, smartwatches are usually not always idle; service transmission / reception needs must also be considered, resulting in even shorter standby times. Furthermore, Figure 2A also shows that smartwatches have short standby times.

[0104] Table 2

[0105] Therefore, to save terminal power consumption, a wake-up receiver is introduced to process the wake-up signal based on the existing communication unit of the terminal, which can reduce power consumption while maintaining low latency. The existing communication unit of the terminal can serve as the main communication unit. That is, as shown in Figure 2B, the terminal can include a main communication unit and a wake-up receiver. When there is no service demand, the main communication unit in the terminal is in a closed state, and the wake-up receiver is in a closed state. When the network device needs to communicate with the terminal, the network device can send a wake-up signal to the terminal. After detecting the wake-up signal, the wake-up receiver in the terminal triggers the main communication unit to open and establish a communication connection with the network device, thereby enabling the network device and the terminal to send and receive service data using this communication connection.

[0106] After introducing the new signal, namely the WUS signal mentioned above, in order to meet the requirements of simple detection, reduced power consumption, and compatibility with existing waveforms to prevent interference with existing users (such as 5G users), as shown in Figure 3, the network device can allocate the bandwidth between OFDM data streams to the WUS signal. Subcarriers within the bandwidth allocated to the WUS signal are selected for modulation, and the modulated carrier signal is sent to the terminal.

[0107] The aforementioned wake-up signal can be a low-power wake-up signal (LP-WUS). Correspondingly, the aforementioned wake-up receiver can be a low-power wake-up receiver.

[0108] In some embodiments, the WUS signal described above can be modulated using the OOK method. As shown in the waveform diagram of the on / off keying modulation method in Figure 4, Vm(t) represents the digital signal to be transmitted, Acos(2πfct) is the unmodulated carrier, and Vam(t) is the OOK-modulated carrier signal. The digital signal can be the digital version of the WUS signal.

[0109] When the WUS signal is modulated using OOK mode, a single OFDM symbol can carry 1 bit of WUS signal information (denoted as OOK-1). As shown in Figure 5A, the bit information "1" occupies one OFDM symbol. Alternatively, a single OFDM symbol can carry multiple bits of information (denoted as OOK-4). For example, a single OFDM symbol can carry 4 bits of information; see Figure 5B, where the bit information "1001" occupies one OFDM symbol.

[0110] While network devices can determine the validity of a WUS signal by detecting high and low levels, this may lead to spectral clustering. Therefore, to ensure a flat spectrum when transmitting an OOK-modulated WUS signal, network devices can modulate the overlaid sequence onto OFDM subcarriers in the frequency domain for transmission.

[0111] The process of network devices sending wake-up signals to terminal devices via a sequence will be described in detail below with reference to Figure 6.

[0112] S101, The network device determines the first root index associated with the information bits of the wake-up signal, or the first root index and the first circular shift.

[0113] The first index carries the valid information (or is described as information bits) of the wake-up signal. Alternatively, the first index and the first cyclic shift (CS) carry the valid information of the wake-up signal. Optionally, the wake-up signal is used to wake up the terminal device to receive messages, such as updated system messages or short messages. Taking the wake-up signal as an example of waking up the terminal device to receive updated system messages, the information bits of the wake-up signal may include system message SI update transmission control information. This SI update transmission control information represents the information required to receive the updated system message, such as frequency domain resource information, time domain resource information, and modulation and coding scheme information required to receive the updated system message.

[0114] Alternatively, a wake-up signal is used to wake up the terminal device to establish a communication connection for the transmission of service data. The information bits of this wake-up signal may include the terminal device's identifier, service information, connection strategy, and other information. In general, the information bits of the wake-up signal mentioned above are related to the service.

[0115] In some embodiments, the information bits of the wake-up signal can be encoded information, such as bitmap or codepoint.

[0116] For example, the network device can encode the wake-up signal to determine the information bits of the wake-up signal, such as 0111. Then, the network device can determine a first index from a first set based on these information bits, using the first index to carry the valid information of the wake-up signal. Alternatively, the network device can determine the first index from the first set based on the information bits of the wake-up signal, and perform a first cyclic shift from a second set, using both the first index and the first cyclic shift to carry the valid information of the wake-up signal.

[0117] The first set mentioned above includes one or more root indices. The second set mentioned above includes one or more cyclic shifts. Each root index in the first set and each cyclic shift in the second set corresponds to different bit information. It should be understood that the number of cyclic shifts in the second set can also be 0, that is, bit information is not represented by cyclic shifts.

[0118] Optionally, the number of root indices in the first set is greater than or equal to 2. Correspondingly, the number of circular shifts in the second set can be 0, or one or more.

[0119] In some embodiments, the network device may also determine a first cyclic shift from a second set based on the information bits of the wake-up signal, so as to use the first cyclic shift to carry information bits instead of using the root to carry information bits. Optionally, the number of cyclic shifts in the second set is greater than or equal to 2. Correspondingly, the number of root indices in the first set can be 0, or one or more.

[0120] In summary, the number of root indices in the first set is greater than or equal to 2. Alternatively, the number of circular shifts in the second set is greater than or equal to 2.

[0121] Optionally, the root index in the first set and the cyclic shift in the second set can be predefined by the protocol. Both network devices and terminal devices can determine the first set and the second set through the protocol.

[0122] Alternatively, the root index in the first set and the cyclic shift in the second set can be configured by the network device. The network device can send a first message to the terminal device, which indicates the root index in the first set and / or the cyclic shift in the second set. For example, if the network device is configured with a first set, it can send a first message to the terminal device indicating the root index included in the first set. Or, for example, if the network device is configured with both a first set and a second set, it can send a first message to the terminal device indicating the root index in the first set and the cyclic shift in the second set.

[0123] In some embodiments, when the number of bits of the wake-up signal information bits is less than or equal to the number of bits N1 of the root index in the first set, the network device can carry the wake-up signal information bits using only the first root index, so as to generate the first sequence using the first root index. Optionally, in this case, although only the first root index is used to carry the valid information of the wake-up signal, generating the first sequence still requires the use of cyclic shifting. The cyclic shifting used, i.e., the first cyclic shifting, can be predefined, configured by the network device, or a cyclic shifting in the second set can be used as the first cyclic shifting by default. For details, please refer to the relevant description below.

[0124] Alternatively, if the number of bits in the wake-up signal information bits is less than or equal to the number of bits N2 in the cyclic shift in the second set, the network device can use only the first cyclic shift to carry the wake-up signal information bits for generating the first sequence. Optionally, in this case, the first root index used to generate the first sequence can be predefined, configured by the network device, or a root index in the first set can be used as the first root index by default, as described in the relevant description below.

[0125] Alternatively, if the number of bits in the wake-up signal information bits is greater than the number of bits N1 in the root index of the first set or greater than the number of bits N2 in the cyclic shift of the second set, the network device determines a first root index from the first set to carry part of the wake-up signal information bits (or information bits M1) using the first root index, and determines a first cyclic shift from the second set to carry other part of the wake-up signal information bits (or information bits M2) using the first cyclic shift, thereby generating a first sequence using the first root index and the first cyclic shift.

[0126] Optionally, information bit M1 in the wake-up signal can be located before or after information bit M2. This application does not impose any restrictions on the order of information bits M1 and M2. For example, if the wake-up signal information bits are 1011, information bit M1 is 10, and information bit M2 is 11, then the bit information corresponding to root2 is 10, so the first index can be root2 to carry information bit M1. And the bit information corresponding to cs3 is 11, so the first circular index can be cs3 to carry information bit M2.

[0127] In this embodiment, when the number of bits in the wake-up signal's information bits is small, the network device can select an object from a set whose number of bits is greater than or equal to the number of bits in the information bit to carry the information bit. This object can be a root index or a cyclic shift, thereby enabling flexible selection of the object carrying valid information and improving configuration flexibility. Furthermore, when the terminal device demodulates the root index or cyclic shift carrying valid information, it can obtain all the information bits of the wake-up signal.

[0128] When the wake-up signal has a large number of information bits, the network device can use the root index in the first set and the cyclic shift in the second set to carry different parts of the wake-up signal information bits, thus achieving configuration flexibility. Furthermore, since the root index and the cyclic shift independently carry different parts of the wake-up signal information bits, the terminal device can determine the specific information bits of the wake-up signal by demodulating either the root index or the cyclic shift.

[0129] In some embodiments, as described above, the root index in the first set and the cyclic shift in the second set can represent bit information. Therefore, the first set and the second set can have corresponding priorities (or sorting priorities) for carrying the effective information of the wake-up signal. The network device can preferentially use the object in the set with the higher sorting priority to carry the information bits of the wake-up signal. This object can refer to root, or cs.

[0130] The sorting priorities of the first and second sets mentioned above can be predefined by the protocol. Alternatively, the sorting priorities of the first and second sets can be configured by the network device. Accordingly, the network device sends a second message to the terminal device, which indicates the sorting priority of the first or second set, that is, whether to prioritize the root index or to cyclically shift the information bits carrying the wake-up signal.

[0131] In this context, the sorting priority of the first set can be higher than that of the second set. That is, network devices can preferentially use the root index to carry the wake-up signal information bits.

[0132] Alternatively, the second set may have a higher sorting priority than the first set. In other words, network devices can preferentially use cyclic shifts to carry the wake-up signal information bits.

[0133] In some embodiments, when a wake-up signal needs to be sent to a terminal device, if objects in the high-priority set can carry all the information bits of the wake-up signal, the network device does not need to continue using objects in the low-priority set to carry the information bits of the wake-up signal. However, if objects in the high-priority set cannot carry all the information bits of the wake-up signal, objects in the high-priority set are used first to carry the information bits of the wake-up signal, and then objects in the low-priority set are used to carry the remaining information bits of the wake-up signal.

[0134] For example, if the number of bits of the information bits of the wake-up signal is less than or equal to the number of bits N1 of the root index in the first set, and the sorting priority of the first set is higher than the sorting priority of the second set, it indicates that the root index in the first set can carry all the information bits of the wake-up signal. In this case, the network device can determine the first root index from the first set based on the information bits of the wake-up signal so as to generate the first sequence according to the first root sequence.

[0135] For example, as shown in Figure 7A, the root index in the first set has a bit length N1 of 2, and the root indices are root0, root1, root2, and root3. The bit information corresponding to root0 is 00, the bit information corresponding to root1 is 01, the bit information corresponding to root2 is 10, and the bit information corresponding to root3 is 11. The wake-up signal information bit is 10, and the bit length of the information bit is 2, which equals N1. Therefore, the network device only needs to determine the first root index. Since the information bit is the same as the bit information corresponding to root2, the network device can use root2 as the first root index.

[0136] Optionally, when the wake-up signal's valid information is not carried through cyclic shifting, since generating the first sequence requires cyclic shifting, the cyclic shift used (also called the first cyclic shift) can be a predefined cyclic shift, a cyclic shift configured by the network device (e.g., the network device's configured cyclic shift is 0 or other values), or a default cyclic shift from the second set, such as the first cyclic shift in the second set. Furthermore, if the first cyclic shift is configured by the network device, the network device can send a relevant message to the terminal device indicating the cyclic shift configured by the network device. Of course, if it is the default, the network device can send a message indicating the default cyclic shift, or it can choose not to send a message; this application does not limit this.

[0137] In addition, network devices typically use root indexes to carry valid information. Therefore, except when the number of bits of the wake-up signal information bits is less than or equal to the number of bits N1 of the root index in the first set, and the sorting priority of the first set is higher than the sorting priority of the second set, network devices can use root indexes and cyclic shifts to carry wake-up signal information bits.

[0138] Specifically, if the number of bits in the wake-up signal is less than or equal to the number of bits N2 in the cyclic shift in the second set, and the sorting priority of the second set is higher than that of the first set, or if the number of bits in the information bits of the wake-up signal is greater than the number of bits N1 in the root index of the first set, or if the number of bits in the information bits of the wake-up signal is greater than the number of bits N2 in the cyclic shift in the second set, the network device can determine the first root index from the first set and the first cyclic shift from the second set based on the information bits of the wake-up signal, so as to generate a first sequence according to the first root index and the first cyclic shift.

[0139] Alternatively, the network device may not use the root sequence to carry valid information, but instead use a cyclic shift to carry valid information. If the number of bits in the wake-up signal is less than or equal to the number of bits N2 in the cyclic shift in the second set, and the sorting priority of the second set is higher than that of the first set, the network device can determine the first cyclic shift from the second set to carry the wake-up signal information bits, instead of using the root sequence (or root index) to carry valid information. However, since generating the first sequence requires the use of the root, the root used (also called the first root index) can be predefined, configured by the network device, or a root index in the first set can be used by default, such as using the first root index in the first set as the first root index.

[0140] Additionally, if the first root index is configured by the network device, the network device can send a message to the terminal device indicating the root index configured by the network device. Of course, if it is the default, the network device can send a message indicating the default root index, or it can choose not to send a message; this application does not restrict this.

[0141] In some embodiments, when the number of bits in the wake-up signal's information bits is greater than the number of bits N1 of the root index in the first set, or when the number of bits in the wake-up signal's information bits is greater than the number of bits N2 of the cyclic shift in the second set, the network device can determine a first root index from the first set and a first cyclic shift from the second set based on the sorting priority of the first or second set and the information bits of the wake-up signal, so that the first root index and the second cyclic shift can be used to carry information bits. Wherein, the information bits with higher sorting priority are carried first, that is, the higher bits of the information bits are carried, which are the left-hand data portion of the information bits.

[0142] For example, as shown in Figure 7B or Figure 7C, the root index in the first set has a bit length N1 of 2, and the root indices are root0, root1, root2, and root3. The bit information corresponding to root0 is 00, the bit information corresponding to root1 is 01, the bit information corresponding to root2 is 10, and the bit information corresponding to root3 is 11. The cyclic shift in the second set has a bit length N2 of 2, and the cyclic shifts are cs0, cs1, cs2, and cs3. The bit information corresponding to cs0 is 00, the bit information corresponding to cs1 is 01, the bit information corresponding to cs2 is 10, and the bit information corresponding to cs3 is 11. The wake-up signal information bit is 1011, and the information bit has a bit length of 2, which is greater than N1 and greater than N2. Therefore, the network device needs to use the root index and cyclic shift to carry the information bit.

[0143] If the sorting priority of the first set is higher than that of the second set, it indicates that the root index is preferred to carry the information bits. Then, as shown in Figure 7B, the network device can carry 10 of information bit 1011 through root2 and carry 11 of information bit 1011 through cs3.

[0144] When the sorting priority of the first set is lower than that of the second set, it indicates that information bits outside the cycle are preferred. In this case, as shown in Figure 7C, the network device can carry 10 of information bit 1011 through cs2 and 11 of information bit 1011 through root3.

[0145] In some embodiments, when the number of bits in the wake-up signal's information bits is small, the network device can select an object from a set whose number of bits is greater than or equal to the number of bits in the information bit, based on the sorting priority of root and cs, to carry the information bit. This object can be a root index or a circular shift. As described earlier, when the number of bits in the wake-up signal's information bits is less than or equal to the number of bits N1 of the root index in the first set, the network device directly carries the information bit through the root index because the root index has a higher sorting priority. This achieves flexible selection of the object carrying the wake-up signal's information bits.

[0146] In some embodiments, the first set may include multiple root indices, and the network device may activate and use only some of the root indices in the first set. Simply put, the network device can reduce the number of root indices in the first set, that is, reduce the number of bits in the root indices of the first set, thereby achieving flexible configuration of the root indices in the first set. For example, the root indices in the first set may be root0 to root7, but considering that the number of bits in the wake-up signal information is relatively small, the network device may only activate and use root0 to root3 in the first set, which is equivalent to the root indices in the first set being root0 to root3.

[0147] Similarly, the second set mentioned above can include multiple cyclic shifts, and the network device can activate and use a portion of the cyclic shifts in the second set. Simply put, the network device can reduce the number of cyclic shifts in the second set, that is, reduce the number of bits in the cyclic shifts of the second set, thereby achieving flexible configuration of the cyclic shifts in the second set.

[0148] The network device sends a third message to the terminal device, which is used to activate a portion of the root index in the first set and / or a portion of the cyclic shift in the second set.

[0149] Alternatively, the network device may also activate all root indices in the first set and all cyclic shifts in the second set. Correspondingly, the aforementioned third message can be used to activate all root indices in the first set and / or all cyclic shifts in the second set. Of course, the third message can activate all root indices in the first set and / or some cyclic shifts in the second set. Alternatively, the third message can activate some root indices in the first set and / or all cyclic shifts in the second set. In summary, the aforementioned third message can be used to activate either the first set or some root indices in the first set, and / or the second set or some cyclic shifts in the second set.

[0150] Optionally, the third message can be carried in a MAC CE command. The first and second sets can be configured at the radio resource control (RRC) layer and activated via MAC CE. Alternatively, the third message can be carried in other data, such as downlink control information (DCI).

[0151] In this embodiment of the application, the network device can activate the actual root index and cyclic shift when the number of bits of the information bit of the wake-up signal is small, such as less than N1 or less than N2, thereby realizing flexible configuration of the set of root index and cyclic shift.

[0152] In some embodiments, the network device pre-configures first information, which may include multiple root indexes. The first information may be a set or a table. The network device can select root indexes from the first information based on the starting root index to determine the aforementioned first set. That is, the first set includes some or all of the root indexes in the first information, thereby enabling flexible configuration of the first set. For example, if the first information is a first table, and the first table includes root indexes root0 to root7, with the starting root index being root4, then the first set includes root indexes root4 to root7.

[0153] It should be understood that network devices can also determine the aforementioned first set by selecting the root index based on the ending root index in the first information. For example, if the first information is a first table, and the first table includes root indices root0 to root7 and ends with root3, then the first set includes root indices root0 to root3. Alternatively, the network device can determine the first set based on the starting and ending root indices in the first information. In general, network devices can determine the aforementioned first set based on the starting root index and / or the ending root index in the first information, thereby achieving flexible configuration of the first set.

[0154] Optionally, the network device can also determine the first set by a number of indices, where the number of indices represents the number of roots included in the first set. For example, the first set can be determined using the initial root index and the number of indices. This number of indices can be configured by the network device or predefined by the protocol.

[0155] Optionally, similar to the preceding text, the first information can be either configured by the network device or predefined by the protocol. Furthermore, after determining the first set, the network device can send a relevant message to the terminal device to indicate the specific root indices included in the first set. Alternatively, the network device can send information to the terminal device indicating the determination of the first set, such as the starting root index, the ending root index, and the number of indices mentioned above.

[0156] Similarly, the network device pre-configures second information, which may include multiple cyclic shifts. The second information can be a set or a table. The network device can determine the aforementioned second set based on the starting cyclic shift and / or the ending cyclic shift from the second information, thereby enabling flexible configuration of the second set.

[0157] Optionally, the network device can determine the cyclic shifts included in the second set not only by the starting and ending cyclic shifts, but also by the interval cyclic shifts in the second information. For example, if the second information includes cyclic shifts of cs0 to cs7 and interval cyclic shifts of cs0 and cs3, then the determined second set is cs0, cs1, cs2, and cs3.

[0158] Optionally, the network device can also determine the second set by a cyclic shift number, which represents the number of CSs included in the second set. For example, the second set can be determined by an initial cyclic shift number and a cyclic shift number. This cyclic shift number can be configured by the network device or predefined by the protocol.

[0159] Optionally, similar to the preceding text, the second information can be either configured by the network device or defined by the protocol. Furthermore, after determining the second set, the network device can send a relevant message to the terminal device to indicate the cyclic shifts included in the second set. Alternatively, the network device can send information to the terminal device indicating the determination of the second set, such as the aforementioned information on the start of the cyclic shift, the end of the cyclic shift, the interval of the cyclic shift, and the number of cyclic shifts.

[0160] It should be understood that the first and second pieces of information mentioned above can be the same information, such as the first table and the second table mentioned above being the same table. Alternatively, the first and second pieces of information can be different information.

[0161] In some embodiments, the starting root index, the starting cyclic shift, the ending root index, the ending cyclic shift, and the interval cyclic shift described above can be configured by the radio resource control (RRC) layer.

[0162] In this embodiment of the application, when the number of bits of the information bits of the wake-up signal is small, such as less than N1 or less than N2, the network device can reconfigure the first set and / or the second set by starting root index, starting cyclic shift, ending root index, ending cyclic shift, and interval cyclic shift, thereby realizing flexible configuration of the root index and cyclic shift set.

[0163] In some embodiments, as described above, when the first index can carry all the information bits of the wake-up signal, the network device can additionally configure a cyclic shift for combination. This cyclic shift can be 0, or it can be any other value. That is, the aforementioned first cyclic shift does not belong to the second set, but is configured by the network device. In other words, the first cyclic shift is not used to carry valid wake-up signal information. Correspondingly, the network device can send a fourth message to the terminal device, which indicates the value of the first cyclic shift. Alternatively, the value of the first cyclic shift may not be configured by the network device, but may be predefined by the protocol, or a cyclic shift from the second set used by default.

[0164] Based on this, network devices can carry the effective information of the wake-up signal through the root index when the number of bits in the wake-up signal information bit is small, such as when the number of bits in the information bit is less than N1. Furthermore, the root index and cyclic shift can be flexibly configured by combining preset values.

[0165] In some embodiments, when the number of bits in the wake-up signal information bits is small, the network device can use one or more of the strategies described above, such as prioritization, selecting a set of bits with a number of bits greater than or equal to the number of bits in the wake-up signal information bits, activating the actually used root set and / or cs set, reconfiguring the root set and / or cs set through information such as the starting root index, the starting cyclic shift, the ending root index, the ending cyclic shift, and the interval cyclic shift, or combining the root with additional cyclic shifts, to determine the object carrying the wake-up signal information bits. This object can be either the root or the cs set, enabling flexible determination of the root index and cyclic shifts. It should be understood that this strategy can be used independently or in combination, and this application does not limit it.

[0166] The previous section introduced how to determine the first root index using a first set and the first cyclic shift using a second set. Alternatively, the specific root and cyclic shift used to generate the first sequence can be determined through the mapping relationship between index values ​​between network devices and terminal devices. The following section will further describe how to determine the root and cyclic shift using this mapping relationship.

[0167] In another implementation, the network device carries the wake-up signal information bits through the root index in the first set, or the network device carries the wake-up signal information bits through the root index and cyclic shift in the third set. The third set includes one or more elements (or combinations), each element including a root index and a cyclic shift.

[0168] Similar to the previous discussion, network devices can determine whether to use the root index to carry the wake-up signal information bits, or to use both the root index and a circular shift, based on strategies such as the number of bits and sorting priority. For example, if the number of bits in the wake-up signal information bits is less than or equal to the number of bits N1 of the root index in the first set, the network device can use the first root index to carry the wake-up signal information bits. Otherwise, the network device uses both the first root index and the first circular shift to carry the wake-up signal information bits.

[0169] Subsequently, the network device can determine the mapped root index corresponding to the root index in the first set for the terminal device based on the mapping relationship between the index values ​​of the network device and the terminal device, so as to generate the first sequence using the mapped root index. Here, the mapping relationship of index values ​​refers to the mapping relationship of the index values ​​of the root indexes. For example, the network device determines the second root index corresponding to the first root index based on the mapping relationship of the index values ​​of the root indexes between the network device and the terminal device (or the mapping relationship of the root indexes), so as to generate the first sequence using the second root index. The bit information corresponding to the first root index and the second root index is the same. This mapping relationship of the root index is determined based on a set value and an offset value.

[0170] Alternatively, the network device can determine the mapped element corresponding to the element in the third set for the terminal device based on the mapping relationship of index values ​​between the network device and the terminal device, so as to generate a first sequence using the mapped element. Here, the mapping relationship of index values ​​refers to the mapping relationship of element index values. For example, the network device can determine the second element corresponding to the first element based on the mapping relationship of element index values ​​(or element mapping relationship) between the network device and the terminal device, so as to generate a first sequence based on the second root index and the second circular shift. The bit information corresponding to the first element and the second element is the same, and the mapping relationship of the elements is determined based on a set value and an offset value.

[0171] The aforementioned settings can be the number of rows R and / or the number of columns C. Both the number of rows R and the number of columns C can be configured by the network device. Alternatively, the network device can configure the number of rows R, and the number of columns C can be calculated based on the number of rows R. Or, the network device can configure the number of columns C, and the number of rows R can be calculated based on the number of columns C. Of course, the number of rows R and / or the number of columns C can also be predefined by the protocol, and this application does not limit them.

[0172] The aforementioned offset value can be predefined by the protocol, or a default value can be used (e.g., the default is the identifier of the cell to which the terminal device belongs, such as ID). Alternatively, the setting value may be configured by the network device. For example, if the setting value is configured by the network device and the offset value is predefined or default, the network device can send a fifth message to the terminal device, which indicates the setting value. Or, if both the setting value and the offset value are configured by the network device, the network device can send a sixth message to the terminal device, which indicates both the setting value and the offset value.

[0173] It should be understood that the determination process of the first root index, or the first root index and the first circular shift, can refer to the relevant description above, or it can be determined in a conventional manner. This application does not limit the determination process of the first root index and the first circular shift.

[0174] In some embodiments, the mapping relationship of the root index values ​​between the network device and the terminal device can be determined by an interleaving method, such as by Formula 1 or Formula 2. Specifically, for determining the mapping relationship by Formula 1, please refer to the relevant content of Example 1 below. For determining the mapping relationship by Formula 2, please refer to the relevant content of Example 2 below.

[0175] Example 1, the above formula is: f(x)=(r*C+c+n) shift )mod(N root Let x represent the index value of the root index (or root index A) in the first set. x = c * R + r, where c represents the column index (column position) of root index A in the first set, R represents the row number, and r represents the row index (row position) of root index A in the first set. The range of r is 0, 1, ..., R-1, and the range of c is 0, 1, ..., C-1. C represents the column number. n shift This represents the offset value. f(x) represents the index value of root index B corresponding to the index value of root index A. That is, f(x) is the index value after mapping the index value of root index A. In other words, there is a mapping relationship between root index A and the root index B corresponding to f(x), corresponding to the same bit information. N root This represents the number of root indices in the first set. It should be understood that the specific values ​​of r and c can be determined by using the range of values ​​for r, the range of values ​​for c, and the value of x, combined with the formula x = c * R + r.

[0176] For example, R = 2, C = 4, the offset is 0, and the root indices (or root index A) included in the first set are root0 to root7. Taking root index A as root1 as an example, the index value of root1 is 1, i.e., x = 1. The range of r is 0 and 1. The network device can determine c = 0 and r = 1 based on x = c * R + r using the range of r. f(x) = (r * C + c + n) shift )mod(N root = (1*4+0+0)mod(8) = 4. That is to say, there is a mapping relationship between the index value "1" and the index value "4", that is, the mapped root index corresponding to root1 is root4. In other words, there is a mapping relationship between the root index root1 of the network device and the root index root4 of the terminal device, corresponding to the same bit information. Specifically, the mapping relationship between the root indices of the network device and the terminal device determined by Formula 1 can be seen in Figure 8. In addition, when a wake-up signal needs to be sent, the network device determines that root1 is associated with the information bits of the wake-up signal. Afterwards, the network device can determine that the mapped root index corresponding to root1 (which can be understood as the first root index mentioned above) is root4 (which can be understood as the second root index mentioned above) through the mapping relationship between the root indices of the network device and the terminal device, that is, root1 and root4 correspond. Afterwards, the network device generates the first sequence based on root4 corresponding to root1, and the information bits carried by root4 corresponding to root1 are still 001. Correspondingly, after determining the first sequence, the terminal device determines that the bit information of root4 is 001, that is, the information bit is 001, based on the mapping relationship between the root index of the network device and the terminal device.

[0177] Optionally, the network device can be configured with the number of rows R, then the number of columns C = N. root / R.

[0178] Optionally, the mapping relationship determined by Formula 1 above can be used to represent the output of columns.

[0179] Example 2, Formula 2 above, f(x)=(c*R+r+n shift )mod(N root (Confirmed.) The meaning of the parameters in Formula 3 can be found in the relevant introduction to Formula 1 above. Furthermore, the process of determining the mapping relationship of the root index between network devices and terminal devices using Formula 2 can also be found in the relevant content of Example 1 above, and will not be repeated here.

[0180] Optionally, the network device can be configured with the number of columns C, then the number of rows R can be determined by C=N. root / R confirmed.

[0181] Optionally, the mapping relationship determined by Formula 2 above can represent a row-to-row list.

[0182] In some embodiments, the mapping relationship of the index values ​​of elements between the network device and the terminal device can be determined by an interleaving method, such as by Formula 3 or Formula 4. Specifically, the mapping relationship can be determined by Formula 3, as described in Example 3 below. The mapping relationship can be determined by Formula 4, as described in Example 4 below.

[0183] Formula three above is, Definitely. x represents the index of the element (or element A) in the third set. x = c * R + r, where c represents the column index (column position) of element A in the third set, R represents the row number of the element in the third set, and r represents the row index (row position) of element A in the third set. The range of r is 0, 1, ..., R-1, and the range of c is 0, 1, ..., C-1. C represents the column number of the element in the third set.

[0184] n shift This represents the offset value. f(x) represents the index value of element B corresponding to the index value of element A. That is, f(x) is the index value after mapping the index value of element A. In other words, there is a mapping relationship between element A and the element B corresponding to f(x), and they correspond to the same bit information. This represents the number of elements in the third set. It should be understood that the specific values ​​of r and c can be determined by using the range of values ​​for r and c, along with the value of x, and the formula x = c * R + r.

[0185] For example, R=2, C=2, the offset is 0, and the third set includes elements 0{root0, cs0}, 1{root0, cs1}, 2{root1, cs0}, and 3{root1, c1}. The bit information corresponding to element 0 is 00, the bit information corresponding to element 1 is 01, the bit information corresponding to element 2 is 10, and the bit information corresponding to element 3 is 11.

[0186] Taking element A as element 1 as an example, the index value of element 1 is 1, that is, x = 1. The range of values ​​for r is 0 and 1. The network device can determine c = 0 and r = 1 based on x = c * R + r by using the range of values ​​for r. In other words, there is a mapping relationship between index value "1" and index value "2". That is, the mapped element corresponding to element 1 is element 2. In other words, there is a mapping relationship between element 1 {root0, cs1} of the network device and element 2 {root1, cs0} of the terminal device, corresponding to the same bit information. Specifically, the mapping relationship between the elements of the network device and the terminal device determined by Formula 3 can be seen in Figure 9. Furthermore, when a wake-up signal needs to be sent, the network device determines that element 1 is associated with the information bits of the wake-up signal. Then, the network device can determine that the mapped element corresponding to element 1 is element 2 through the mapping relationship of the root indices between the network device and the terminal device. That is, element 1 (which can be understood as the first element mentioned above) corresponds to element 2 (which can be understood as the second element mentioned above). Then, the network device generates a first sequence based on element 2 corresponding to element 1. The information bits carried by element 2 corresponding to element 1 are still 01. Correspondingly, the terminal device determines that the bit information of element 2 is 01 based on the mapping relationship of the root indices between the network device and the terminal device. That is, the information bits are 01.

[0187] Optionally, the network device can be configured with the number of rows R, then the number of columns C = N. root / R.

[0188] Optionally, the mapping relationship determined by Formula 3 above can be used to represent the output of columns.

[0189] Example 4, Formula 4 above, Confirmed. The meaning of the parameters in Formula 4 can be found in the relevant introduction to Formula 3 above. Furthermore, the process of determining the mapping relationship between elements between network devices and terminal devices using Formula 4 can also be found in the relevant content of Example 3 above, and will not be repeated here.

[0190] Optionally, the network device can be configured with the number of columns C, then the number of rows R can be determined by C=N. root / R confirmed.

[0191] Optionally, the mapping relationship determined by Formula 4 above can represent a row-to-row list.

[0192] It should be noted that when a network device needs to send a wake-up signal, it directly determines the second index based on the established mapping relationship described above, and uses this second index to generate the first sequence. This second index corresponds to the first index. In simple terms, this mapping relationship is similar to the table shown in Figure 8. The network device can directly determine the second index from this table based on the valid information of the wake-up signal, without needing to perform calculations again using Formula 1 or Formula 2. Alternatively, the network device can first determine the first index, and then calculate the second index corresponding to the first index based on Formula 1 or Formula 2, thus determining the mapping relationship. That is, this application does not restrict the timing of determining the mapping relationship.

[0193] Similarly, when a network device needs to send a wake-up signal, it directly determines the second element based on the established mapping relationship described above, so as to generate the first sequence using the second element, which corresponds to the first element. In simple terms, this mapping relationship is similar to the table shown in Figure 9. The network device can directly determine the second element from this table based on the valid information of the wake-up signal, without needing to perform calculations again using Formula 3 or Formula 4. Alternatively, the network device can first determine the first element, and then calculate the corresponding second element based on Formula 3 or Formula 4, thus determining the mapping relationship. That is, this application does not impose any restrictions on the timing of determining the mapping relationship.

[0194] In some embodiments, network devices can configure different offset values ​​or interleaving depths (set values) to achieve inconsistent index values ​​used by different cells. That is, the mapping relationship between the index values ​​of terminal devices and network devices in different cells is different, avoiding randomization interference and thus preventing terminal devices that do not need to be woken up from being woken up.

[0195] In some embodiments, similar to the first and second sets described above, the third set may be predefined by the protocol or configured by the network device. Accordingly, after configuring the third set, the network device can send relevant information to the terminal device to indicate the elements in the third set. The specific process can be found in the relevant content above. Additionally, similar to the preceding text, the network device can also activate and use some or all of the elements in the third set. Alternatively, the network device can determine the third set from third information based on a starting index value, which may be predefined or configured by the network device. Of course, the third set can also be determined based on other information, such as an ending index value. Specifically, the process of determining the elements in the third set can be found in the preceding text.

[0196] Optionally, the first or second set mentioned above can be used as a third set. That is, the first and second sets can be the same set, which can include not only the root index but also the cyclic shift.

[0197] S102. The network device generates a first sequence based on the first root index, or generates a first sequence based on the first root index and the first cyclic shift.

[0198] For example, if the first index is already capable of carrying all the information bits of the wake-up signal, the network device can use the first sequence generated by the first index.

[0199] Alternatively, in the case where the information bits of the wake-up signal are carried by the first index and the first cyclic shift, the network device generates a first sequence using the first index and the first cyclic shift.

[0200] The first sequence mentioned above can be a ZC sequence.

[0201] S103. The network device obtains a first signal based on the first sequence modulation.

[0202] S104. The network device sends the first signal to the terminal device.

[0203] The first signal carries the information bits of the wake-up signal.

[0204] Optionally, the first signal can be modulated based on OOK, which in turn is modulated based on the first sequence. For example, the first sequence might be the ON symbol (high level) in OOK. Accordingly, the first signal can be a carrier signal modulated by OOK.

[0205] In some embodiments, the network device may divide the information bits of the aforementioned wake-up signal into one or more parts. For each part, the network device may determine a first sequence corresponding to that part, which carries the information bits of that part. Accordingly, the network device may modulate the aforementioned first signal based on one or more first sequences. For example, the first sequence is on the first ON symbol in OOK, the second sequence is on the second ON symbol in OOK, and so on.

[0206] Optionally, the aforementioned terminal devices may be one or more.

[0207] In this application, the network device obtains a first sequence carrying the information bits by determining the root index and / or cyclically shifting the information bits carrying the wake-up signal. Then, the network device sends first information modulated based on the first sequence to the terminal device to achieve the transmission of the wake-up signal, ensuring a flat spectrum during transmission. Furthermore, randomization interference can be avoided.

[0208] The process of a network device sending a first signal corresponding to a wake-up signal to a terminal device has been described above. The following section will further describe the process by which the terminal device determines the validity information of the wake-up signal using the first signal, thereby enabling it to determine that the network device has sent a wake-up signal based on this valid information. For example, as shown in Figure 10, this process may include:

[0209] S201. The terminal device receives a first signal sent by the network device, the first signal being obtained by the network device through modulation based on a first sequence.

[0210] S202. The terminal device obtains the first sequence based on the first signal.

[0211] S203. The terminal device obtains the first root index or the first root index and the first circular shift according to the first sequence.

[0212] S204. The terminal device obtains the wake-up signal information bits based on the first index, or the first index and the first cyclic shift.

[0213] For example, once the first index is obtained, the terminal device can determine the information bits of the wake-up signal based on the bit information corresponding to the first index.

[0214] Given the first index and the first circular shift, the terminal device can determine the wake-up signal information bits based on the bit information corresponding to the first index and the bit information corresponding to the first circular shift.

[0215] The first root index mentioned above belongs to the first set. The first circular shift belongs to the second set.

[0216] Optionally, upon obtaining the second root index corresponding to the first root index, the terminal device can determine the wake-up signal information bits based on the bit information corresponding to the second root index. The second root index is determined based on the mapping relationship between the root index values ​​of the network device and the terminal device, and the index value of the first root index. The bit information corresponding to the second root index is the same as that corresponding to the first root index in the first set.

[0217] Alternatively, if the second element corresponding to the first element is obtained, the terminal device can determine the information bits of the wake-up signal based on the bit information corresponding to the second element. Here, the first element belongs to the third set, and the first element includes a first root index and a first cyclic shift.

[0218] The second element is determined based on the mapping relationship between the index values ​​of elements between network devices and terminal devices and the index value of the first element. The bit information corresponding to the first element and the second element is the same.

[0219] The terminal device testing scheme can refer to the network device testing scheme described above. For example, the network device sends a first message to the terminal device. The first message indicates the root index in the first set or the cyclic shift in the second set. Then the network device can receive the first message. Of course, as mentioned earlier, the root index in the first set or the cyclic shift in the second set are predefined.

[0220] For example, a terminal device receives a second message from a network device, which indicates the sorting priority of the first or second set. Of course, as mentioned earlier, the sorting priority of the first or second set is predefined.

[0221] For example, the terminal device receives a third message from the network device, which is used to activate the first set or a portion of the root indices in the first set, and / or the second set or a portion of the cyclic shift. For another example, the terminal device receives a fourth message from the network device, which indicates the value of the first cyclic shift. Of course, the value of the first cyclic shift can be predefined, or it can default to using the cyclic shift from the second set.

[0222] In this embodiment of the application, after the terminal device demodulates the first signal to obtain the information bits of the wake-up signal, it can wake up the main communication unit in the terminal device and perform corresponding operations, such as establishing a communication connection with the network device, so that the terminal device and the network device can transmit service data through the communication connection.

[0223] In some embodiments, this application also provides a computer-readable storage medium including computer instructions that, when executed on an electronic device, cause the electronic device to perform the methods described above.

[0224] In some embodiments, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the method described above.

[0225] In some embodiments, this application also provides a wireless communication device, including:

[0226] A processor and a memory, wherein the memory is used to store program instructions, and the processor is used to execute the program instructions in the memory to implement the method described above.

[0227] In some embodiments, this application also provides an electronic device that can function as a terminal or network device, the electronic device comprising: a memory and a processor. The memory and processor are coupled together. The memory stores computer program code, which includes computer instructions. The transceiver is used to receive and transmit data. When the processor executes the computer instructions, it causes the electronic device to perform the method described above.

[0228] In some embodiments, this application also provides a communication system, which may include network devices and terminals (such as first-type terminals and second-type terminals) in any possible implementation of any of the above aspects.

[0229] It is understood that any of the wireless communication devices, terminals, network devices, electronic devices, computer-readable storage media or computer program products provided above can be applied to the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0230] These or other aspects of this application will become more readily apparent in the following description.

[0231] In addition, embodiments of this application also provide an apparatus, which may specifically be a chip, component or module. The apparatus may include a connected processor and a memory. The memory is used to store computer execution instructions. When the apparatus is running, the processor can execute the computer execution instructions stored in the memory to cause the chip to execute the cell reselection method executed by the terminal device in the above method embodiments.

[0232] In this embodiment, the terminal, computer storage medium, network device, computer program product or chip are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects of the corresponding methods provided above, and will not be repeated here.

[0233] Another embodiment of this application provides a system that may include the aforementioned terminal device and network device, and can be used to implement the aforementioned cell reselection method. The network device may be, for example, a base station, which can send system information and reference signals for cell measurement to the terminal device when the terminal device performs cell reselection.

[0234] Through the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0235] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0236] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0237] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0238] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, essentially or in other words, the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0239] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, Applied to network devices, the method includes: A first sequence is generated based on the first index, or the first index and the first cyclic shift, wherein the first index is associated with the information bits of the wake-up signal, or both the first index and the first cyclic shift are associated with the information bits of the wake-up signal. Send a first signal to a terminal device; wherein the first signal is obtained by modulation based on a first sequence.

2. The method according to claim 1, characterized in that, The first root index is contained in a first set, which includes one or more root indices; the first cyclic shift is contained in a second set, which includes one or more cyclic shifts. The wake-up signal information bits include information bit M1 and information bit M2. Information bit M1 is carried by the first root index, and information bit M2 is carried by the first cyclic shift. The number of bits of information bit M1 is less than or equal to the number of bits N1 of the root index in the first set, and the number of bits of information bit M2 is less than or equal to the number of bits N2 of the cyclic shift in the second set. or, The information bits of the wake-up signal are carried by the first root index, and the number of bits of the information bits is less than or equal to the number of bits N1 of the root index in the first set.

3. The method according to claim 1 or 2, characterized in that, The first root index is contained in a first set, which includes the root index; the first circular shift is contained in a second set, which includes the circular shift. The number of root indices in the first set is greater than or equal to 2; or the number of cyclic shifts in the second set is greater than or equal to 2.

4. The method according to any one of claims 1 to 3, characterized in that, The first root index is contained in a first set, which includes one or more root indices; the first cyclic shift is contained in a second set, which includes one or more cyclic shifts. The root index in the first set or the circular shift in the second set are predefined; Alternatively, the method may further include: sending a first message to the terminal device, the first message being used to indicate the root index in the first set or the cyclic shift in the second set.

5. The method according to any one of claims 1 to 4, characterized in that, The first root index is contained in a first set, which includes one or more root indices; the first cyclic shift is contained in a second set, which includes one or more cyclic shifts. The sorting priority of the first set or the second set is predefined; Alternatively, the method may further include: A second message is sent to the terminal device, the second message being used to indicate the sorting priority of the first set or the second set.

6. The method according to claim 5, characterized in that, The sorting priority of the first set is higher than that of the second set.

7. The method according to any one of claims 1 to 6, characterized in that, The step of generating the first sequence based on the first root index, or the first root index and the first cyclic shift, includes: If the number of bits in the information bits of the wake-up signal is less than or equal to the number of bits N1 of the root index in the first set, and the sorting priority of the first set is higher than the sorting priority of the second set, the first sequence is generated according to the first root index. Alternatively, if the number of bits in the wake-up signal is less than or equal to the number of bits N2 of the cyclic shift in the second set, and the sorting priority of the second set is higher than the sorting priority of the first set, or if the number of bits in the information bits of the wake-up signal is greater than the number of bits N1 of the root index in the first set, or if the number of bits in the information bits of the wake-up signal is greater than the number of bits N2 of the cyclic shift in the second set, the first sequence is generated based on the first root index and the first cyclic shift. Wherein, the first root index is contained in the first set, and the first set includes one or more root indices; the first cyclic shift is contained in the second set, and the second set includes one or more cyclic shifts.

8. The method according to any one of claims 1 to 7, characterized in that, The step of generating the first sequence based on the first root index, or the first root index and the first cyclic shift, includes: If the number of bits of the information bits of the wake-up signal is less than or equal to the number of bits N1 of the root index in the first set, the first sequence is generated according to the first root index. Alternatively, if the number of bits of the information bits of the wake-up signal is greater than the number of bits N1 of the root index in the first set, the first sequence is generated according to the first root index and the first cyclic shift; The first root index is contained in a first set, which includes one or more root indices; the first cyclic shift is contained in a second set, which includes one or more cyclic shifts.

9. The method according to any one of claims 1 to 8, characterized in that, The method further includes: Send a third message to the terminal device, the third message being used to activate a first set or a portion of the root indexes in the first set, and / or, a second set or a portion of the second set, for cyclic shifting; Wherein, the first root index is contained in the first set, and the first set includes one or more root indices; the first cyclic shift is contained in the second set, and the second set includes one or more cyclic shifts.

10. The method according to any one of claims 1 to 9, characterized in that, The method further includes: In the pre-configured first information, a first set is determined based on the starting root index and / or the ending root index, wherein the first information includes multiple root indices; The first root index is contained in the first set, which includes one or more root indices.

11. The method according to claim 10, characterized in that, The method further includes: In the pre-configured second information, a second set is determined based on the starting cyclic shift and / or the ending cyclic shift; the second information includes multiple cyclic shifts; Alternatively, the second set can be determined based on the cyclic shift of the interval in the second information of the preset configuration; The first cyclic shift is included in the second set, which includes one or more cyclic shifts.

12. The method according to any one of claims 1 to 10, characterized in that, The value of the first cyclic shift is predefined, or it is the default cyclic shift from the second set, which includes one or more cyclic shifts; Alternatively, the method may further include: sending a fourth message to the terminal device, the fourth message being used to indicate the value of the first cyclic shift.

13. The method according to claim 1, characterized in that, The step of generating the first sequence based on the first root index includes: Based on the mapping relationship of root indices between the network device and the terminal device, the second root index corresponding to the first root index is determined; wherein, the bit information corresponding to the first root index and the second root index is the same; the mapping relationship is determined based on a set value and an offset value; The first sequence is generated based on the second root index; The first root index is contained in the first set, which includes one or more root indices.

14. The method according to claim 1, characterized in that, The first root index and the first circular shift are contained in the first element; The step of generating the first sequence based on the first root index and the first cyclic shift includes: Based on the mapping relationship between elements between the network device and the terminal device, the second element corresponding to the first element is determined; wherein, the second element includes a second root index and a second cyclic shift; the bit information corresponding to the first element and the second element is the same; the mapping relationship is determined based on a set value and an offset value, and the first sequence is generated based on the second root index and the second cyclic shift; The first element is contained in a third set, which includes one or more elements, each of which includes a root index and a circular shift.

15. The method according to claim 12 or 14, characterized in that, The offset value is predefined or a default value is used. The method further includes sending a fifth message to the terminal device, the fifth message being used to indicate a set value. or, The method further includes: A sixth message is sent to the terminal device, the sixth message being used to indicate the set value and the offset value.

16. A communication method, characterized in that, Applied to a terminal device, the method includes: The network device receives a first signal, which is obtained by the network device modulating a first sequence. Based on the first signal, the first sequence is obtained; Based on the first sequence, obtain the first index, or obtain the first index and the first circular shift; The wake-up signal information bits are obtained based on the first root index, or the first root index and the first cyclic shift.

17. The method according to claim 16, characterized in that, The first root index is contained in a first set, which includes one or more root indices; the first cyclic shift is contained in a second set, which includes one or more cyclic shifts. The root index in the first set or the circular shift in the second set are predefined; Alternatively, the method further includes: receiving a first message sent by the network device, the first message being used to indicate a root index in the first set or a cyclic shift in the second set.

18. The method according to claim 16 or 17, characterized in that, The first root index is contained in a first set, which includes one or more root indices; the first cyclic shift is contained in a second set, which includes one or more cyclic shifts. The sorting priority of the first set or the second set is predefined; Alternatively, receive a second message sent by the network device, the second message being used to indicate the sorting priority of the first set or the second set.

19. The method according to any one of claims 16 to 18, characterized in that, The method further includes: Receive a third message sent by the network device, the third message being used to activate a first set or a portion of the root indexes in the first set, and / or, a second set or a portion of the second set, for cyclic shifting; Wherein, the first root index is contained in the first set, and the first set includes one or more root indices; the first cyclic shift is contained in the second set, and the second set includes one or more cyclic shifts.

20. The method according to any one of claims 16 to 19, characterized in that, The value of the first cyclic shift is predefined, or it is the default cyclic shift from the second set, which includes one or more cyclic shifts; Alternatively, the method may further include: receiving a fourth message sent by the network device, the fourth message being used to indicate the value of the first cyclic shift.

21. The method according to claim 16, characterized in that, The step of obtaining the information bits of the wake-up signal based on the first root index includes: The information bits of the wake-up signal are obtained based on the second index corresponding to the first index; The second root index is determined based on the mapping relationship between the root index values ​​of the network device and the terminal device and the index value of the first root index; the bit information corresponding to the first root index and the second root index is the same; the mapping relationship is determined based on a set value and an offset value; The first root index is contained in a first set, which includes one or more root indices.

22. The method according to claim 16, characterized in that, The first root index and the first cyclic shift are contained in the first element; obtaining the information bits of the wake-up signal based on the first root index and the first cyclic shift includes: The information bits of the wake-up signal are obtained by using the second root index and the second cyclic shift in the second element corresponding to the first element; The second element is determined based on the mapping relationship between the index values ​​of elements between the network device and the terminal device and the index value of the first element; the bit information corresponding to the first element and the second element is the same; the mapping relationship is determined based on a set value and an offset value; The first element is contained in a third set, which includes one or more elements, each of which includes a root index and a circular shift.

23. The method according to claim 21 or 22, characterized in that, The offset value is predefined or uses a default value. The method further includes: receiving a fifth message sent by the network device, the fifth message being used to indicate a set value. Alternatively, the method may further include: receiving a sixth message sent by the network device; wherein the sixth message is used to indicate the set value and the offset value.

24. A communication device, characterized in that, include: Module for performing the communication method as described in any one of claims 1-15; And / or, a module for performing the communication method as described in any one of claims 16-23.

25. A communication system, characterized in that, include: Network equipment and terminal equipment; The network device generates a first sequence based on a first index, or the first index and a first cyclic shift, wherein the first index is associated with the information bits of the wake-up signal, or both the first index and the first cyclic shift are associated with the information bits of the wake-up signal. The network device sends a first signal to the terminal device; wherein the first signal is obtained by modulation based on a first sequence; The terminal device receives the first signal; The terminal device obtains the first sequence based on the first signal; The terminal device obtains a first index or a first index and a first cyclic shift based on the first sequence. The terminal device obtains the wake-up signal information bits based on the first root index, or the first root index and the first cyclic shift.

26. A communication device, characterized in that, include: At least one processor and an interface circuit, the interface circuit being configured to receive signals from other communication devices besides the communication device and transmit them to the processor or to send signals from the processor to other communication devices besides the communication device, the processor being configured to implement the method as described in any one of claims 1-15 via logic circuits or executable code instructions; and / or, the processor being configured to implement the method as described in any one of claims 16-23 via logic circuits or executable code instructions.

27. A computer-readable storage medium, characterized in that, It includes a computer program or instructions that, when run on a computer, cause the computer to perform the method as described in any one of claims 1-15; and / or cause the computer to perform the method as described in any one of claims 16-23.

28. A chip, characterized in that, include: An interface circuit and a logic circuit, wherein the interface circuit is used to receive signals from other chips besides the chip and transmit them to the logic circuit, or to send signals from the logic circuit to other chips besides the chip, and the logic circuit is used to implement the method as described in any one of claims 1-15; and / or, the logic circuit is used to implement the method as described in any one of claims 16-23.

29. A computer program product, characterized in that, The computer program product includes: a computer program or instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-15; and / or cause the computer to perform the method as described in any one of claims 16-23.

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