Signal processing method and related apparatus

Abstract

Provided in the present application is a signal processing method. The method comprises: a terminal receiving a low-power indication signal sent by a network device; and the terminal demodulating the low-power indication signal on the basis of a waveform used by the low-power indication signal, wherein information of the waveform is obtained on the basis of at least one of the following ways: obtained on the basis of the low-power indication signal, obtained on the basis of a preamble signal, obtained on the basis of signaling, and obtained on the basis of a waveform supported by the terminal. Since the terminal can obtain, in at least one way, the waveform used by the low-power indication signal, the terminal can demodulate the low-power indication signal, thereby realizing functions such as low-power wake-up of the terminal. For example, the terminal is in a sleep state and can be woken up by a low-power wake-up signal, thereby reducing the power consumption of the terminal.

Description

Signal processing method and related device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on April 3, 2024, with application number 2024104085483 and invention name “Signal processing method and related device”, the entire contents of which are incorporated by reference into this application. Technical Field

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

[0003] A key challenge for IoT terminals is device power consumption. Since Rel-16, the 3rd Generation Partnership Project (3GPP) has been researching energy-saving technologies for fifth-generation (5G) mobile communication devices. While existing technologies can significantly reduce the power consumption of 5G devices, there's still a significant gap between these technologies and the power consumption requirements of IoT devices, such as the standby time requirements of over one year for industrial sensor terminals and over two weeks for wearable terminals.

[0004] How to reduce the power consumption of the terminal is a problem that needs to be solved. Summary of the Invention

[0005] This application provides a signal processing method and related devices to solve the problem of how to reduce the power consumption of a terminal. The disclosed technical solutions are as follows:

[0006] A first aspect of the present application provides a signal processing method, applied to a terminal, comprising: receiving a low-power indication signal; and demodulating the low-power indication signal based on a waveform used by the low-power indication signal, wherein the waveform information is obtained based on at least one of the following methods: based on the low-power indication signal, based on a preamble signal, based on signaling, and based on a waveform supported by the terminal. Because the terminal can obtain the waveform used by the low-power indication information in at least one manner, the terminal can demodulate the low-power indication signal, thereby enabling functions such as low-power wake-up of the terminal. Therefore, the terminal can be in a sleep state and can be awakened by a low-power wake-up signal to reduce the power consumption of the terminal.

[0007] In some implementations, before demodulating the low power indication signal based on the waveform used by the low power indication signal, the method further includes: obtaining waveform information based on the low power indication signal to facilitate the terminal to demodulate the low power indication signal.

[0008] In some implementations, obtaining waveform information based on the low-power indication signal includes: obtaining waveform indication information by demodulating the low-power indication signal, where the waveform indication information is used to indicate the waveform. As part of the low-power indication signal, the waveform indication information facilitates flexible waveform selection by the network device and facilitates notification of the terminal's purpose.

[0009] In some implementations, the low power consumption indication signal includes waveform indication information and low power consumption indication information.

[0010] In some implementations, the waveform indication information includes: N bits of information representing a waveform, where N is an integer greater than 0; or 1 bit of information representing a first-type waveform or a second-type waveform; or an overlaid sequence, where the overlaid sequence is an overlaid sequence of a target bit in the N bits of information, where the overlaid sequence and / or the N bits of information represent a waveform, and the target bit is a first value such as 0 or 1. All of the above methods are conducive to carrying waveform indication information in the low-power indication signal.

[0011] In some implementations, obtaining waveform information based on the low-power indication signal includes: determining the waveform as a second-category waveform based on the waveform indication information; and determining the waveform as a first waveform within the second-category waveform based on the length of a unit time domain resource occupied by the low-power indication signal. Determining the waveform used by the low-power indication signal based on both the waveform indication information and the length of the unit time domain resource occupied by the low-power indication signal allows for flexible waveform indication while reducing low-power indication signal overhead.

[0012] In some implementations, obtaining the waveform indication information by demodulating the low power consumption indication signal includes: demodulating the low power consumption signal based on a preconfigured demodulation method to obtain the waveform indication information.

[0013] In some implementations, the method further includes obtaining subcarrier spacing information based on the waveform indication information.

[0014] In some implementations, obtaining the waveform information based on the low power indication signal includes: obtaining the waveform information based on the length of the unit time domain resource occupied by the low power indication signal (such as the symbol length or code chip length of OFDM). This implicit waveform indication method is beneficial to reducing the overhead of the low power indication signal.

[0015] In some implementations, the unit time domain resource occupied by the first waveform and the unit time domain resource occupied by the second waveform have the same length; and before demodulating the low-power indication signal based on the waveform used by the low-power indication signal, the method further includes: receiving waveform indication signaling, the waveform indication signaling being used to indicate the first waveform or the second waveform. This combination of explicit waveform indication and implicit waveform indication helps balance the flexibility of waveform acquisition and the overhead of the low-power indication signal.

[0016] In some implementations, before demodulating the low power indication signal based on the waveform used by the low power indication signal, it also includes: receiving a preamble signal and obtaining waveform information based on the preamble signal, which is beneficial to reducing the overhead of the low power indication signal.

[0017] In some implementations, obtaining waveform information based on the preamble signal includes obtaining waveform information based on the type or length of a sequence used in the preamble signal; or obtaining waveform information based on a sequence used in the preamble signal, where the sequence is a preset type or a pre-set sequence. These approaches facilitate increasing the flexibility of the preamble signal.

[0018] In some implementations, the method further includes obtaining subcarrier spacing information based on the pilot signal.

[0019] In some implementations, before demodulating the low power indication signal based on the waveform used by the low power indication signal, it also includes: receiving signaling, the signaling includes waveform information, and obtaining the waveform information based on the signaling, which is conducive to reducing the overhead of the low power indication signal.

[0020] In some implementations, the terminal is in an idle state or an inactive state, and the signaling includes at least one of a system message and a DCI, thereby providing multiple ways for the terminal in the idle state or the inactive state to obtain waveform information.

[0021] In some implementations, the terminal is in a connected state, and the signaling includes: a system message; or a combination of a system message and a first signaling, the first signaling including a media access control control element Mac CE or a downlink control message DCI; or Mac CE, DCI or radio resource control RRC signaling, thereby providing multiple ways for the connected terminal to obtain waveform information.

[0022] In some implementations, before demodulating the low power indication signal based on the waveform used by the low power indication signal, it also includes: sending capability information to the network device, the capability information indicating the waveform supported by the terminal; demodulating the low power indication signal based on the waveform used by the low power indication signal, including: demodulating the low power indication signal based on the waveform indicated by the capability information, indicating the waveform supported by the terminal through the capability information, which is conducive to saving resources occupied by the indication waveform.

[0023] In some implementations, the capability information indicates multiple waveforms; and based on the waveform indicated by the capability information, the low power consumption indication signal is demodulated, including: based on a pre-agreed waveform among the multiple waveforms, or a waveform indicated by the network device among the multiple waveforms, the low power consumption indication signal is demodulated, so that the network device uses a better waveform to send the low power consumption indication signal.

[0024] In some implementations, before demodulating the low power consumption indication signal based on the waveform used by the low power consumption indication signal, it also includes: obtaining waveform information based on the length of the unit time domain resource occupied by the low power consumption indication signal, or the message received by the terminal, the waveform information indicates one of the waveforms pre-configured for the terminal.

[0025] The second aspect of the present application provides a signal processing method, which is applied to a network device, including: sending a signal to a terminal, the signal including a low-power indication signal, the low-power indication signal using a first waveform, and the information of the first waveform is obtained by the terminal through at least one of the following methods: a low-power indication signal, a preamble of the low-power indication signal, signaling, and a waveform supported by the terminal.

[0026] In some implementations, the low power consumption indication signal includes: waveform indication information and low power consumption indication information, and the waveform indication information indicates the first waveform.

[0027] In some implementations, the waveform indication information includes: N bits of information representing a first waveform, where N is an integer greater than 0; or 1 bit of information representing a first type of waveform or a second type of waveform; or an overlaid sequence, where the overlaid sequence is an overlaid sequence of a target bit in the N bits of information, where the overlaid sequence and / or the N bits of information represent a waveform, and the target bit is a first value, such as 0 or 1. As part of the low-power indication signal, the waveform indication information facilitates flexible waveform selection by the network device and facilitates notification of the terminal's purpose.

[0028] In some implementations, the waveform indication information is modulated using a preconfigured method, and the preconfigured method is preconfigured in the terminal.

[0029] In some implementations, the low power indication signal has a length corresponding to the first waveform, where the length is the length of the unit time domain resource occupied by the low power indication signal. Using a length indicating waveform is beneficial for reducing the overhead of the low power indication signal.

[0030] In some implementations, the unit time domain resource occupied by the first waveform and the unit time domain resource occupied by the second waveform have the same length, and the method further includes: sending waveform indication signaling to the terminal, the waveform indication signaling being used to indicate the first waveform. A waveform indication method that combines waveform indication information with a length method is beneficial for balancing the flexibility of waveform acquisition methods and the overhead of low-power indication signals.

[0031] In some implementations, the signal further includes: a pilot signal, the pilot signal indicating the first waveform.

[0032] The waveform information is obtained, which is beneficial to reducing the overhead of the low power indication signal.

[0033] In some implementations, the preamble signal includes a sequence, wherein the sequence type is the type corresponding to the first waveform, or the sequence length is the length corresponding to the first waveform, or the sequence is a sequence corresponding to the first waveform in a preset type corresponding to the first waveform, or the sequence is a pre-set sequence corresponding to the first waveform. These implementations facilitate increasing the flexibility of the preamble signal.

[0034] In some implementations, before sending the signal to the terminal, the method further includes: sending signaling to the terminal, the signaling indicating the first waveform. Indicating the waveform through signaling is helpful in reducing the overhead of the low power consumption indication signal.

[0035] In some implementations, the terminal is in an idle state or an inactive state; the signaling includes: at least one of a system message and a DCI; the terminal is in a connected state, and the signaling includes: a system message; or, a combination of a system message and a first signaling, the first signaling includes a media access control control element Mac CE or a downlink control message DCI; or, Mac CE, DCI or radio resource control RRC signaling, thereby providing multiple ways for the terminal to obtain waveform information.

[0036] In some implementations, before sending a signal to a terminal, the method further includes: receiving capability information sent by the terminal, the capability information indicating waveforms supported by the terminal, the waveforms supported by the terminal including a first waveform; and sending a signal to the terminal including: sending a low power consumption indication signal to the terminal based on the first waveform indicated by the capability information. Indicating waveforms supported by the terminal through the capability information helps save resources occupied by indicating waveforms.

[0037] In some implementations, the capability information indicates multiple waveforms; based on the first waveform indicated by the capability information, a low power consumption indication signal is sent to the terminal, including: based on the multiple waveforms of the first type indicated by the capability information, using the first waveform of the first type pre-agreed with the terminal, sending a low power consumption indication signal to the terminal, which is conducive to improving the flexibility of waveform indication.

[0038] In some implementations, the capability information indicates multiple waveforms; and sending a low-power indication signal to the terminal based on a first waveform indicated by the capability information includes: selecting a first waveform from the multiple waveforms of a first type indicated by the capability information, and sending the low-power indication signal to the terminal; and further includes indicating the first waveform to the terminal. Combining the selection based on capability information with the waveform indication method facilitates using a more optimal waveform based on the capabilities of the terminal.

[0039] In some implementations, the terminal includes: a terminal in a terminal group, the terminal being in a non-connected state; sending a low power consumption indication signal to the terminal based on a first waveform indicated by capability information, including: sending a low power consumption indication signal to the terminal based on a first waveform supported by all terminals in the terminal group, which is facilitating transmission of the low power consumption indication signal to the terminal group.

[0040] In some implementations, the first waveform is pre-configured in the network device; the first waveform is indicated to the terminal through the length of the low power indication signal, where the length is the length of the unit time domain resource occupied by the low power indication signal; or, the first waveform is indicated by a message sent to the terminal.

[0041] The third aspect of the present application provides an electronic device, comprising: a memory and a processor; the memory is used to store program code; the processor is used to run the program code, so that the electronic device implements the signal processing method provided by the first aspect or the second aspect of the present application.

[0042] The fourth aspect of the present application provides a readable storage medium having instructions stored thereon. When the instructions are executed on an electronic device, the electronic device executes the signal processing method provided in the first aspect or the second aspect of the present application.

[0043] The fifth aspect of the present application provides a computer program product. When the computer program product runs on an electronic device, the electronic device implements the signal processing method provided in the first aspect or the second aspect of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 is an example diagram of the standby time of a 5G smartwatch with different DRX cycles;

[0046] FIG2 is a schematic diagram of a low-power wake-up mechanism;

[0047] FIG3 is a schematic diagram of a WUS generation method;

[0048] FIG4 is a waveform diagram of an on-off keying modulation method;

[0049] FIG5 is a schematic diagram of generating WUS using OOK-1;

[0050] FIG6 is a schematic diagram of generating WUS using OOK-4;

[0051] FIG7 is a flowchart of a signal processing method provided in an embodiment of the present application;

[0052] FIG8 is a diagram illustrating a structure of a low-power wake-up signal according to an embodiment of the present application;

[0053] FIG9 is a flowchart of another signal processing method provided in an embodiment of the present application;

[0054] FIG10 is an example diagram of the correspondence between the low-power wake-up signal and the symbol length provided in an embodiment of the present application;

[0055] FIG11 is a flowchart of another signal processing method provided in an embodiment of the present application;

[0056] FIG12 is a diagram illustrating a structure of a low-power wake-up signal and a preamble signal according to an embodiment of the present application;

[0057] FIG13 is a flowchart of another signal processing method provided in an embodiment of the present application;

[0058] FIG14 is a flowchart of another signal processing method provided in an embodiment of the present application;

[0059] FIG15 is a schematic structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] The terms "first", "second" and "third" in the specification, claims and drawings of this application are used to distinguish different objects rather than to limit a specific order.

[0061] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0062] Table 1 shows the standardized terminal energy-saving features:

[0063] Table 1

[0064] During the research process, the inventors found that although the above energy-saving features can significantly reduce the power consumption of 5G terminals, there is still a large gap from the power consumption requirements of IoT terminals.

[0065] Taking smartwatches as an example, due to device size limitations, they typically use small batteries (e.g., 200-600 mAh). Table 2 shows examples of idle power consumption and standby time for 4G and 5G smartwatches. Figure 1 shows the standby time for 5G smartwatches with different discontinuous reception (DRX) cycles (i.e., 0.64s, 1.28s, and 2.56s).

[0066] Table 2

[0067] Combining Figure 1 and Table 2, it's clear that the smartwatch's standby time still falls far short of the two-week target. Furthermore, this assumes the smartwatch is always in idle mode, with no uplink or downlink traffic. In real-world scenarios, considering both receiving and sending traffic, the standby time will be even shorter.

[0068] In order to reduce the power consumption of smart terminals and increase the standby time, the inventors found during the research process: taking Figure 2 as an example, the terminal can be split into a main communication unit and a wake-up receiver unit. When there is no business demand, the terminal turns off the main communication unit and only turns on the wake-up receiver unit. When the network needs to communicate with the terminal, it can send a low-power wake-up signal. After successfully detecting the wake-up signal, the wake-up receiver unit triggers the main communication unit to turn on and establish a communication connection with the network to complete the sending and receiving of business.

[0069] During the research process, the inventors also found that the introduced wake-up signal needs to meet the following two requirements: on the one hand, the terminal needs to have a simple way to detect the wake-up signal to achieve the purpose of reducing power consumption; on the other hand, the wake-up signal needs to be compatible with existing communication mechanisms to avoid interfering with communication.

[0070] Taking Figure 3 as an example, OFDM is used for communication between the terminal and the network. One way to introduce a wake-up signal is to allocate the bandwidth between the OFDM data streams to the wake-up signal (WUS), modulate the subcarrier in the bandwidth allocated to the WUS, and send the modulated carrier signal to the terminal, thereby meeting the above requirements.

[0071] Binary on-off keying (OOK) modulation can be used to generate the WUS shown in Figure 3. OOK is a special case of Amplitude Shift Keying (ASK) modulation, as shown in Figure 4. If one amplitude is zero and the other amplitude is non-zero, it is OOK, also known as binary amplitude keying (2ASK), which uses a unipolar non-return-to-zero code sequence to control the on and off of the sinusoidal carrier. In Figure 4, V m(t) is the digital signal to be sent, A cos(2πfct) is the unmodulated carrier, V am(t) It is the carrier signal of OOK modulation. The modulation principle of OOK is to control one amplitude to 0 and the other amplitude to non-zero.

[0072] As shown in FIG3 and FIG4 , in some implementations, there are two ways to generate a WUS based on OOK:

[0073] The first method is shown in Figure 5, and is referred to as OOK-1:

[0074] ·One OFDM symbol contains a single bit. The subcarriers used for LP-WUS are (Single-bit in 1 OFDM symbol, SCs of LP-WUS are):

[0075] -OOK=1 means all subcarriers are modulated;

[0076] -OOK=0 means all SCs are zero power (from base-band point of view).

[0077] The second method is shown in Figure 6, and is referred to as OOK-4.

[0078] Transform M-bit OOK in time domain:

[0079] -N SCs of OOK-1 are generated by a transformation (DFT / Least square);

[0080] -N' samples are generated from M-bits;

[0081] - signal modification may or may NOT be used;

[0082] - truncation or other additional modification may or may NOT be used, if not used, N is the same as N';

[0083] -N' can be the same as K.

[0084] Taking the above two generation methods as examples, it can be seen that the waveforms used by LPWUS are divided into two types: OOK-1 and OOK-4. In the case of OOK-4, M values ​​are divided into 1, 2, 4, and 8.

[0085] The communication system includes a terminal and a network device. When the network device generates a WUS and sends the WUS to the terminal to wake up the terminal, how to demodulate the WUS is a problem that needs to be solved for the terminal.

[0086] Demodulating WUS can be understood as identifying the waveform used by LPWUS and parsing the information carried in LPWUS based on the identified waveform.

[0087] Based on the above objectives, an embodiment of the present application provides a signal processing method for use in a communication system.

[0088] The communication system includes a terminal and a network device. The terminal may be the terminal shown in FIG2 . In this scenario, the signal sent by the network device to the terminal is a low-power wake-up signal, and the signal demodulated by the terminal is a low-power wake-up signal.

[0089] The communication system can also be a device in the Ambient Internet of Things (Ambient IoT). In this scenario, the signals sent by network devices to terminals and the signals that terminals need to receive and demodulate are Ambient IoT downlink signals. In another scenario, the signals sent by network devices to terminals and the signals that terminals need to receive and demodulate are low-power-synchronization signals (LP-SS).

[0090] The signals in the above scenarios are collectively referred to as low-power indication signals. That is, low-power indication signals include but are not limited to low-power wake-up signals, Ambient IoT downlink signals, and LP-SS.

[0091] In the following embodiments of the present application, an example is given in which the signal sent by the network device to the terminal is a low-power wake-up signal, and the signal received and demodulated by the terminal is a low-power wake-up signal.

[0092] The terminals in the communication system can be ambient IoT devices, including various handheld devices with wireless communication capabilities, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem. Terminals can be mobile stations (MS), subscriber units (SUs), cellular phones, smartphones, wireless data cards, personal digital assistants (PDAs), computers, tablet computers, wireless modems, handheld devices (Handsets), laptop computers, machine type communication (MTC) terminals, etc.

[0093] A network device is a device deployed in a wireless access network to provide wireless communication functions for terminal devices. Network devices may include various forms of macro base stations, micro base stations (also known as small stations), relay stations, access points, etc. In systems using different wireless access technologies, the names of network devices may be different, such as Base Transceiver Station (BTS) in the Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) network, Node B (NB) in Wideband Code Division Multiple Access (WCDMA), and Evolved Node B (eNB) in Long Term Evolution (LTE). A network device may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. A network device may also be a base station device in a fifth generation mobile communication system (5G) network or next generation wireless communication, or a network device in a future evolved Public Land Mobile Network (PLMN) network. The network device can also be a wearable device or a vehicle-mounted device. The network device can also be a transmission and reception point (TRP).

[0094] The communication between the terminal and the network equipment can be applicable to the Long Term Evolution (LTE) system, the Universal Mobile Telecommunications System (UMTS) system, the Code Division Multiple Access (CDMA) system, the Wireless Local Area Network (WLAN) or the fifth generation mobile communication system (5G) or the next generation wireless communication system.

[0095] FIG7 is a flow chart of a signal processing method provided in an embodiment of the present application, including the following steps:

[0096] S11. The network device sends LPWUS configuration information to the terminal.

[0097] The configuration information is at least used to instruct to enable the low-power wake-up function of the terminal, which will not be described in detail here.

[0098] S12. The network device sends LPWUS to the terminal.

[0099] In this embodiment, the LPWUS carries waveform indication information and low power consumption wake-up information.

[0100] Taking Figure 8 as an example, in LPWUS, the waveform indication information precedes the low-power wake-up information. Combined with Figure 2, the low-power wake-up information is used to wake up the terminal's main communication unit. It can be understood that in order for the terminal to parse the low-power wake-up information from the LPWUS, it needs to know the waveform used by the LPWUS. The waveform indication information is used to indicate the waveform used by the LPWUS.

[0101] In the embodiments of the present application, a waveform can be understood as the waveform of a signal obtained using an OOK modulation scheme, taking the aforementioned OOK-1 and OOK-4 as examples, but not limiting thereof. An OOK-1 waveform can be understood as the waveform of a signal obtained using the OOK-1 modulation scheme under OFDM, while an OOK-4 waveform can be understood as the waveform of a signal obtained using the OOK-4 modulation scheme under OFDM.

[0102] Therefore, the terminal needs to first demodulate from LPWUS to obtain waveform indication information, then obtain the waveform used by LPWUS based on the waveform indication information, and obtain low-power wake-up information based on the waveform used by LPWUS.

[0103] Based on the above principle of the terminal demodulating LPWUS, in this embodiment, the network device needs to select the modulation mode of the waveform indication information and the content of the waveform indication information.

[0104] The modulation method of the waveform indication information is used to modulate the waveform indication information, and the terminal needs to use a corresponding demodulation method to demodulate to obtain the waveform indication information.

[0105] In some implementations, the network device is pre-configured with the waveform indication information in which the modulation mode is OOK, and the length of the OOK symbol (or chip) is equal to the length of the OFDM symbol (or chip). Examples of such implementations are OOK-1 or OOK-4 with M=1.

[0106] In some other implementations, the modulation mode of the waveform indication information pre-configured in both the network device and the terminal is OOK-1 or OOK-4 and M=1.

[0107] In some implementations, the waveform indication information is used not only to indicate the waveform used by the LPWUS, but also to indicate the subcarrier spacing of the LPWUS, such as 15k or 30k, etc., which needs to be indicated.

[0108] In some implementations, the content of the waveform indication information includes N bits of information, where N is an integer greater than 0.

[0109] An example value of N is 2. For example, N 00 represents OOK-1, N 01 represents OOK-4 and M=1, N 10 represents OOK-4 and M=2, and N 11 represents OOK-4 and M=4.

[0110] Another example of a value of N is 1. In this case, N is used to distinguish OOK-1 from OOK-4 and M=1. For example, N being 0 indicates OOK-1, and N being 1 indicates OOK-4 and M=1.

[0111] It is understandable that 1 bit of information can only distinguish between OOK-1 and OOK-4 with M=1. In this case, one way is that the content of the waveform indication information can only indicate OOK-1 or OOK-4 with M=1, and no longer use the case where OOK-4 and M is a value other than 4. Another way is to use different symbol (or code chip) lengths of the low-power indication signal to distinguish the case where M>1 of OOK-4. Specifically, in this step, the network device encodes the content of the waveform indication information in combination with the Manchester encoding method, and the terminal uses the corresponding method to decode it.

[0112] In some implementations, the waveform indication information includes a preconfigured sequence. A preconfigured sequence is a sequence of fixed values, meaning each bit has the same preconfigured value, with different sequence lengths representing different waveforms. An example of a preconfigured sequence is an overlaid sequence of target bits in N-bit information. In this case, the overlaid sequence represents the waveform used by the LPWUS, or the overlaid sequence and the N-bit information represent the waveform used by the LPWUS. The target bit is a bit whose value is a first value, such as a target bit of 0 or 1.

[0113] It can be understood that, as shown in FIG5 , the overlaid sequence value is a sequence modulated by 1 in OOK-1 (taking the high level in one OFDM symbol in FIG5 as an example). Modulation can be understood as performing calculations, processing, or transformations, and is not limited here.

[0114] As shown in Figure 6, the Overlaid sequence value is a sequence in which 1 in the time domain sequence (taking 1 in 1001 shown in Figure 6 as an example) is up-sampled and multiplied (an example of modulation) in OOK-4 (as performed by the signal generation and modification in Figure 6), or other forms of sequence in which 1 in the time domain sequence is modulated before IFFT is performed in OOK-4.

[0115] That is, the overlaid sequence may be a sequence obtained by modulating 1 in the time domain sequence in any step before IFFT.

[0116] The above modulation of 1 is only an example, and other bits such as 0 can also be modulated, which is not limited here.

[0117] Overlaid sequences may or may not use Manchester encoding.

[0118] S13. The terminal demodulates LPWUS.

[0119] As mentioned above, the terminal first obtains waveform indication information from LPWUS demodulation, obtains the waveform used by LPWUS indicated by the waveform indication information (ie, the content of the waveform indication information), and then obtains low power consumption wake-up information based on the waveform used by LPWUS.

[0120] In some implementations, the demodulation mode pre-configured with waveform indication information in the terminal is OOK, and the length of the symbol (or chip) obtained by OOK is equal to the length of the OFDM symbol (or chip). Examples of such implementations are OOK-1 or OOK-4 with M=1.

[0121] In some other implementations, the demodulation mode pre-configured with waveform indication information in the terminal is OOK-1 or OOK-4 and M=1.

[0122] It can be understood that, regardless of the method, the demodulation method of the waveform indication information pre-configured by the terminal corresponds to the modulation method of the waveform indication information pre-configured in the network device. For example, if the modulation method of the waveform indication information pre-configured by the network device is OOK-1, then the demodulation method of the waveform indication information pre-configured by the terminal is OOK-1, and cannot be OOK-4 and M=1.

[0123] In some implementations, the correspondence between the content of the waveform indication information and the waveform used by the LPWUS is pre-configured in the terminal and is the same as the correspondence used by the network device.

[0124] The signal processing method provided in this embodiment enables the network device to indicate the selection of a waveform in real time, which helps the network device flexibly select a waveform based on other factors such as channel conditions, thereby improving network spectrum efficiency.

[0125] FIG9 is a flow chart of another signal processing method provided in an embodiment of the present application. Compared with the flow chart shown in FIG7 , there is no need to set waveform indication information. FIG9 includes the following steps:

[0126] S21. The network device sends LPWUS configuration information to the terminal.

[0127] S22. The network device sends LPWUS to the terminal.

[0128] In this embodiment, the LPWUS carries the wake-up information. The length of the unit time domain resource occupied by the LPWUS indicates the waveform used by the LPWUS. The length of the unit time domain resource occupied includes a symbol length or a chip length.

[0129] In some implementations, as shown in FIG10 , one waveform is retained between OOK-1 and OOK-4 with M=1, and the length of the retained waveform is equal to the length of one OFDM symbol (or chip). OOK-4 with M=2 corresponds to a first length, and OOK-4 with M=4 corresponds to a second length. The first length is greater than the second length, and both the first length and the second length are less than the length of one OFDM symbol.

[0130] In some implementations, the information of one type retained between the two types of OOK-1 and OOK-4 with M=1 is pre-configured in the network device, or is selected by the network device.

[0131] S23. The terminal demodulates LPWUS.

[0132] Specifically, the terminal first obtains the waveform used by the LPWUS based on the length of the LPWUS, and then parses the low-power wake-up information based on the waveform used by the LPWUS. It is understandable that the correspondence between the length of the LPWUS and the waveform used by the LPWUS is pre-configured in the terminal.

[0133] In some implementations, information about one of the two waveforms, OOK-1 and OOK-4 with M=1, is pre-configured in the terminal. In other implementations, information about one of the two waveforms, OOK-1 and OOK-4 with M=1, is sent by a network device to the terminal via a message. Examples of the message include, but are not limited to, system messages, Radio Resource Control (RRC), Medium Access Control (MAC) Control Element (CE), or Downlink Control Information (DCI) signaling.

[0134] The process described in this embodiment does not require indication information, thus saving LPWUS overhead.

[0135] FIG11 is a flow chart of another signal processing method provided in an embodiment of the present application, which differs from the flow chart shown in FIG7 in that the waveform used by the LPWUS is indicated based on a preamble signal.

[0136] The following steps are included in Figure 11:

[0137] S31. The network device sends LPWUS configuration information to the terminal.

[0138] S32. The network device sends a preamble signal and LPWUS to the terminal.

[0139] In some implementations, as shown in FIG12 , the preamble signal precedes the LPWUS signal. In this embodiment, the LPWUS signal carries the low-power wake-up information. FIG12 differs from FIG8 in that the preamble signal is used to indicate the waveform indication information.

[0140] In some implementations, a sequence is used as a preamble signal, and different types of sequences indicate different waveforms. For example, the types of sequences that can be used as preamble signals include ZC sequences, M sequences, and PSS sequences. The ZC sequence represents OOK-1, and the M sequence represents OOK-4 with M=1.

[0141] In other implementations, a fixed type of sequence is used as the preamble signal, and different sequences within this type indicate different waveforms. For example, the preamble signals are all ZC sequences, and different sequences within the ZC sequence (with the same or different root sequences) represent different waveforms. For another example, two different sequences within the PSS sequence represent OOK-1 and OOK-4 with M=1 waveforms, respectively. Alternatively, when the root sequence is the same, sequences generated by different cyclic shifts represent different waveforms.

[0142] In yet another implementation, different sequences are used to indicate different waveforms. For example, 000000 is used to indicate OOK-1, and 111111 is used to indicate OOK-4, with M=1.

[0143] In some other implementations, sequences of different lengths are used to represent different waveforms.

[0144] S33. The terminal demodulates the preamble signal to obtain waveform information, and then decodes the LPWUS based on the waveform information to obtain low-power wake-up information.

[0145] The method provided in this embodiment, in addition to enabling the network device to indicate waveform selection in real time, is also beneficial in reducing the overhead of the LPWUS compared to the method of configuring N bits of information representing waveforms in the LPWUS.

[0146] It can be understood that, in addition to indicating the waveform used by the LPWUS, the preamble signal may also indicate subcarrier spacing information.

[0147] FIG13 is a flow chart of another signal processing method disclosed in an embodiment of the present application. The difference from the above embodiment is that the network device uses signaling to indicate the waveform used by the LPWUS to the terminal.

[0148] The following steps are included in Figure 13:

[0149] S41. The network device sends LPWUS configuration information to the terminal.

[0150] S42. The network device sends a signaling to the terminal.

[0151] The signaling indicates the waveform and may also indicate the subcarrier spacing.

[0152] In some implementations, the terminal is in an idle state or an inactive state. The network device may use one of the following three methods to send a signaling message carrying the indication information to the terminal:

[0153] A. Send a system message to the terminal, the system message including waveform indication information. An example of a system message is a system information block (SIB). For example, N bits of indication information are added to SIB1 to indicate the waveform used by the LPWUS in at least one cell.

[0154] B. Send a system message to the terminal, where the system message includes candidate waveform indication information. The candidate waveform indication information is used to indicate waveforms that can be used by the LPWUS (ie, candidate waveforms).

[0155] The Group Common Downlink Control Message (Group Common DCI) sent to the terminal includes waveform indication information and subcarrier spacing information. The waveform indication information indicates the waveform used by the LPWUS among the candidate waveforms.

[0156] C. Sending a Group Common DCI to the terminal, where the Group Common DCI includes at least one of waveform indication information and subcarrier spacing information. It will be understood that the DCI used in the embodiments of the present application may be DCI 2-6 in addition to the Group Common DCI described above, or a new DCI may be added as signaling for transmitting waveform indication information, and the new DCI may be recorded as DCI 2-15, etc.

[0157] In some other implementations, when the terminal is in a connected state, the network device may use one of the following three methods to send signaling carrying indication information to the terminal:

[0158] D. Send a system message to the terminal, the system message including waveform indication information. An example of a system message is SIB1. For example, N bits of indication information are added to SIB1 to indicate the waveform used by the LPWUS in at least one cell.

[0159] E. Send a system message to the terminal, including candidate waveform indication information. The Mac CE or Group Common DCI sent to the terminal includes waveform indication information and subcarrier spacing information.

[0160] F. Send Mac CE, Group Common DCI, dedicated DCI, or RRC signaling to the terminal, where the signaling includes at least one of waveform indication information and subcarrier spacing information.

[0161] It can be understood that the signaling in this embodiment may only indicate the subcarrier spacing, while the waveform may be indicated using the method provided in other embodiments.

[0162] S43. The network device sends LPWUS to the terminal.

[0163] S44. The terminal demodulates LPWUS according to the waveform indicated by the signaling to obtain low power consumption wake-up information.

[0164] It is understood that in some implementations, before S44, the terminal further performs a step of parsing the signaling to obtain waveform information. In other implementations, such as S44, after receiving the LPWUS, the terminal parses the signaling and the LPWUS together.

[0165] The signal processing method provided in this embodiment indicates the waveform used by the LPWUS through signaling, which is beneficial to reducing the overhead of the LPWUS.

[0166] FIG14 is a flow chart of another signal processing method disclosed in an embodiment of the present application. The difference from the aforementioned embodiment is that different waveforms are used based on the capabilities of the terminal.

[0167] The following steps are included in Figure 14:

[0168] S51. The terminal sends capability information to the network device.

[0169] The capability information indicates the LPWUS waveforms supported by the terminal. If the capability information indicates OOK-1, it indicates that the terminal supports OOK-1. If the capability information indicates OOK-4, it indicates that the terminal supports OOK-4. The capability information can also indicate both OOK-1 and OOK-4, indicating that the terminal supports both OOK-1 and OOK-4.

[0170] In some implementations, because OOK-1 is easy to implement, OOK-1 is used as a waveform type supported by all terminals.

[0171] S52: The network device sends an LPWUS to the terminal based on the capability information.

[0172] It is understood that the network device generates and sends the LPWUS to the terminal based on the waveform indicated by the capability information. For example, if the capability information indicates OOK-1, the network device uses OOK-1 to generate the LPWUS. If the capability information indicates OOK-4 and M=1, the network device uses OOK-4 and M=1 to generate the LPWUS. Alternatively, the capability information may indicate OOK-4, and the network device may use a waveform in OOK-4 that was pre-agreed with the terminal to generate the LPWUS. Alternatively, the network device may use one of the OOK-4 methods to generate the LPWUS and, in combination with the methods provided in the aforementioned embodiments, inform the terminal of the waveform used by the LPWUS.

[0173] For another example, the capability information indicates OOK-1 and OOK-4. The network device selects either OOK-1 or OOK-4, generates LPWUS, and informs the terminal of the waveform used by LPWUS in combination with the method provided in the above embodiment.

[0174] In some implementations, when a terminal is in a connected state, the network device generates an LPWUS based on the capability information reported by the terminal and sends it to the terminal. In other implementations, when a terminal is in a non-connected state and is one of a terminal group, the network device generates an LPWUS based on the capabilities supported by multiple terminals in the terminal group and sends it to the terminal group. For example, if all terminals in the terminal group support OOK-4, the LPWUS is generated using OOK-4. For another example, if some terminals in the terminal group support OOK-4, while other terminals do not support OOK-4 and only support OOK-1, the network device generates an LPWUS using OOK-1.

[0175] S53: The terminal demodulates LPWUS using a supported waveform to obtain low power consumption wake-up information.

[0176] For example, if the terminal only supports OOK-1, OOK-1 is used to demodulate LPWUS. For another example, if the terminal supports OOK-4, a waveform pre-determined with the network device in OOK-4 is used to demodulate LPWUS, or LPWUS is demodulated based on the waveform indicated by the indication information sent by the network device.

[0177] In the method provided in this embodiment, the network device uses the modulation waveform of LPWUS based on the capabilities of the terminal, which can reduce the resources occupied by the indication waveform.

[0178] In the embodiment shown in FIG. 5 , the step of the network device sending the LPWUS configuration information to the terminal is not shown, and may be performed or not performed based on actual conditions, which is not limited here.

[0179] In addition to the signal processing method provided in the above embodiments, the embodiments of the present application also provide a signal processing method that integrates the methods in the above embodiments.

[0180] In some implementations, the waveform used by the pre-configured low-power indication signal in the network device is OOK-1 or OOK-4 and M=1. Based on the configuration, the network device uses OOK-1 or OOK-4 and M=1 to send a low-power indication signal to the terminal. In this case, the network device needs to indicate the waveform to be used to the terminal. The network device may indicate the waveform used by the low-power indication signal to the terminal based on the methods provided in the aforementioned embodiments, such as the network device indicating the waveform used by the low-power indication signal to the terminal in an implicit manner based on the length of the unit time domain resource. For example, the network device may use an explicit method such as a message such as signaling to indicate the waveform used by the low-power indication signal to the terminal. It may also use a combination of multiple methods to indicate the waveform used by the low-power indication signal to the terminal.

[0181] It is understandable that the above is only one implementation method for integrating multiple methods of informing the terminal of the waveform used by the low power consumption indication signal, and is not intended to be limiting. The steps provided in the above embodiments can be arbitrarily combined to obtain new methods.

[0182] FIG15 is a schematic structural diagram of a terminal provided in an embodiment of the present application.

[0183] Taking a mobile phone as an example, the terminal includes a processor 10, an external memory interface 20, a display screen 30, an internal memory 40, an antenna 1, an antenna 2, a mobile communication module 50, and a wireless communication module 60, etc.

[0184] It should be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the terminal. In other embodiments, the terminal may include more or fewer components than shown, or some components may be combined or separated, or arranged differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0185] The processor 10 may include one or more processing units, including at least an application processor (AP) and a modem. The different processing units may be independent devices or integrated into one or more processors. The processing units may be comprised of at least one chip, one of which is a baseband processing chip, which includes one or more modems.

[0186] In the embodiment of the present application, the modem is used to implement the steps or functions implemented by the terminal in the above-mentioned signal processing method.

[0187] The external memory interface 20 can be used to connect an external memory card, such as a Micro SD card, to expand the terminal's storage capacity. The external memory card communicates with the processor 10 via the external memory interface 20 to implement data storage. For example, files such as music and videos can be stored on the external memory card.

[0188] The internal memory 40 can be used to store computer executable program codes, which include instructions. The processor 10 executes the instructions stored in the internal memory 40 to execute various functional applications and data processing of the terminal.

[0189] The wireless communication function of the terminal can be implemented through antenna 1, antenna 2, mobile communication module 50, wireless communication module 60, modem processor and baseband processor.

[0190] Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the terminal can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In other embodiments, the antennas can be used in conjunction with a tuning switch.

[0191] The mobile communication module 50 can provide solutions for wireless communications including 2G / 3G / 4G / 5G applied on the terminal. The mobile communication module 50 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 50 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 50 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 50 can be set in the processor 10. In some embodiments, at least some of the functional modules of the mobile communication module 50 can be set in the same device as at least some of the modules of the processor 10. In some embodiments, the terminal initiates or receives a call request through the mobile communication module 50 and the antenna 1.

[0192] The above is only a specific embodiment of the present application, but the scope of protection of this application is not limited to this. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A signal processing method, characterized in that: Applied to a terminal, the method includes: receiving a low power consumption indication signal; Based on the waveform used by the low power consumption indication signal, the low power consumption indication signal is demodulated, and the information of the waveform is obtained based on at least one of the following methods: based on the low power consumption indication signal, based on the preamble signal, based on signaling, and based on the waveform supported by the terminal.

2. The method according to claim 1, characterized in that Before demodulating the low power consumption indication signal based on the waveform used by the low power consumption indication signal, the method further includes: The waveform information is obtained based on the low power consumption indication signal.

3. The method according to claim 2, characterized in that The obtaining the waveform information based on the low power consumption indication signal includes: By parsing the low power consumption indication signal, waveform indication information is obtained, where the waveform indication information is used to indicate the waveform.

4. The method according to claim 3, characterized in that The low power consumption indication signal includes: The waveform indication information and the low power consumption indication information.

5. The method according to claim 3 or 4, characterized in that The waveform indication information includes: represents N bits of information of the waveform, where N is an integer greater than 0; or 1-bit information indicating the first type of waveform or the second type of waveform; or, An overlaid sequence is an overlaid sequence of a target bit in the N-bit information. The overlaid sequence and / or the N-bit information represent the waveform, and the target bit is a first value.

6. The method according to claim 5, characterized in that The obtaining the waveform information based on the low power consumption indication signal includes: determining, based on the waveform indication information, that the waveform is the second type of waveform; Based on the length of the unit time domain resource occupied by the low power consumption indication signal, it is determined that the waveform is the first waveform in the second type of waveform.

7. The method according to any one of claims 3 to 6, characterized in that: Obtaining waveform indication information by demodulating the low power consumption indication signal includes: Based on a pre-configured demodulation mode, the low-power consumption signal is demodulated to obtain waveform indication information.

8. The method according to any one of claims 3 to 7, characterized in that: Also includes: Based on the waveform indication information, subcarrier spacing information is obtained.

9. The method according to claim 2, characterized in that The obtaining the waveform information based on the low power consumption indication signal includes: The waveform information is obtained based on the length of the unit time domain resource occupied by the low power consumption indication signal.

10. The method according to claim 9, characterized in that The unit time domain resource occupied by the first waveform and the unit time domain resource occupied by the second waveform have the same length; Before demodulating the low power consumption indication signal based on the waveform used by the low power consumption indication signal, the method further includes: A waveform indication signaling is received, where the waveform indication signaling is used to indicate the first waveform or the second waveform.

11. The method according to claim 1, wherein Before demodulating the low power consumption indication signal based on the waveform used by the low power consumption indication signal, the method further includes: receiving the pilot signal; Information on the waveform is obtained based on the pilot signal.

12. The method according to claim 11, characterized in that The obtaining the waveform information based on the pilot signal includes: obtaining the waveform information based on the type or length of the sequence used by the pilot signal; or The waveform information is obtained based on a sequence used by the pilot signal, where the sequence is a sequence of a preset type or a pre-set sequence.

13. The method according to claim 11 or 12, characterized in that Also includes: Subcarrier spacing information is obtained based on the pilot signal.

14. The method according to claim 1, wherein Before demodulating the low power consumption indication signal based on the waveform used by the low power consumption indication signal, the method further includes: receiving the signaling, wherein the signaling includes information about the waveform; The waveform information is obtained based on the signaling.

15. The method according to claim 14, characterized in that The terminal is in an idle state or an inactive state; The signaling includes at least one of a system message and a DCI.

16. The method according to claim 14, characterized in that The terminal is in a connected state; The signaling includes: System messages; or, A combination of a system message and a first signaling, wherein the first signaling includes a media access control element Mac CE or a downlink control message DCI; or Mac CE, DCI or radio resource control RRC signaling.

17. The method according to claim 1, wherein Before demodulating the low power consumption indication signal based on the waveform used by the low power consumption indication signal, the method further includes: Sending capability information to a network device, the capability information indicating waveforms supported by the terminal; The demodulating the low power consumption indication signal based on the waveform used by the low power consumption indication signal includes: The low power consumption indication signal is demodulated based on the waveform indicated by the capability information.

18. The method according to claim 17, characterized in that The capability information indicates a plurality of waveforms; The demodulating the low power consumption indication signal based on the waveform indicated by the capability information includes: The low power consumption indication signal is demodulated based on a pre-agreed waveform among the multiple waveforms, or a waveform indicated by the network device among the multiple waveforms.

19. The method according to claim 1, wherein Before demodulating the low power consumption indication signal based on the waveform used by the low power consumption indication signal, the method further includes: The waveform information is obtained based on the length of the unit time domain resource occupied by the low power consumption indication signal or the message received by the terminal, where the waveform information indicates one of the waveforms pre-configured for the terminal.

20. A signal processing method, characterized in that: Applied to a network device, the method includes: A signal is sent to a terminal, where the signal includes a low power consumption indication signal, where the low power consumption indication signal uses a first waveform, and information of the first waveform is obtained by the terminal in at least one of the following ways: the low power consumption indication signal, a preamble of the low power consumption indication signal, signaling, and a waveform supported by the terminal.

21. The method according to claim 20, characterized in that The low power consumption indication signal includes: Waveform indication information and low power consumption indication information, wherein the waveform indication information indicates the first waveform.

22. The method according to claim 21, characterized in that The waveform indication information includes: represents N bits of information of the first waveform, where N is an integer greater than 0; or 1-bit information indicating the first type of waveform or the second type of waveform; or, An overlaid sequence is an overlaid sequence of a target bit in the N-bit information. The overlaid sequence and / or the N-bit information represent the waveform, and the target bit is a first value.

23. The method according to claim 21, characterized in that The waveform indication information is modulated using a preconfigured method, and the preconfigured method is preconfigured in the terminal.

24. The method according to claim 20, characterized in that The low power consumption indication signal has a length corresponding to the first waveform, and the length is the length of a unit time domain resource occupied by the low power consumption indication signal.

25. The method according to claim 24, characterized in that The unit time domain resource occupied by the first waveform and the unit time domain resource occupied by the second waveform have the same length; The method further comprises: A waveform indication signaling is sent to the terminal, where the waveform indication signaling is used to indicate the first waveform.

26. The method according to claim 20, wherein The signal also includes: A preamble signal indicates the first waveform.

27. The method according to claim 26, characterized in that The pilot signal includes: A sequence, wherein the type of the sequence is the type corresponding to the first waveform, or the length of the sequence is the length corresponding to the first waveform, or the sequence is a sequence corresponding to the first waveform in a preset type corresponding to the first waveform, or the sequence is a pre-set sequence corresponding to the first waveform.

28. The method according to claim 20, wherein Before sending the signal to the terminal, the method further includes: Sending signaling to a terminal, where the signaling indicates the first waveform.

29. The method according to claim 28, characterized in that The terminal is in an idle state or an inactive state; The signaling includes: at least one of a system message and a DCI; The terminal is in a connected state, and the signaling includes: a system message; or a combination of a system message and a first signaling, wherein the first signaling includes a media access control control element Mac CE or a downlink control message DCI; or Mac CE, DCI or radio resource control RRC signaling.

30. The method according to claim 20, wherein Before sending the signal to the terminal, the method further includes: receiving capability information sent by the terminal, where the capability information indicates waveforms supported by the terminal, where the waveforms supported by the terminal include the first waveform; The sending of a signal to the terminal includes: Based on the first waveform indicated by the capability information, the low power consumption indication signal is sent to the terminal.

31. The method according to claim 30, characterized in that The capability information indicates a plurality of waveforms; The sending the low power consumption indication signal to the terminal based on the first waveform indicated by the capability information includes: Based on a plurality of waveforms of a first type indicated by the capability information, the low power consumption indication signal is sent to the terminal using the first waveform of the first type pre-agreed with the terminal.

32. The method according to claim 30, wherein The capability information indicates a plurality of waveforms; The sending the low power consumption indication signal to the terminal based on the first waveform indicated by the capability information includes: selecting the first waveform from a plurality of waveforms of a first type indicated by the capability information, and sending the low power consumption indication signal to the terminal; The method further comprises: The first waveform is indicated to the terminal.

33. The method according to claim 30, wherein The terminal includes: a terminal in a terminal group, the terminal being in a non-connected state; The sending the low power consumption indication signal to the terminal based on the first waveform indicated by the capability information includes: Based on the first waveform supported by all terminals in the terminal group, the low power consumption indication signal is sent to the terminal.

34. The method according to claim 20, wherein The first waveform is pre-configured in the network device; Indicating the first waveform to the terminal through a length, where the length is the length of a unit time domain resource occupied by the low power consumption indication signal; Alternatively, the first waveform is indicated by a message sent to the terminal.

35. An electronic device, characterized in that: The electronic device includes: a memory and a processor; the memory is used to store program code; the processor is used to run the program code, so that the electronic device implements the signal processing method according to any one of claims 1 to 34.

36. A readable storage medium, characterized in that Instructions are stored thereon, and when the instructions are executed on an electronic device, the electronic device executes the signal processing method according to any one of claims 1 to 34.

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