Signal sending method and apparatus, signal receiving method and apparatus, and device

Abstract

The present application relates to the technical field of communications, and discloses a signal sending method and apparatus, a signal receiving method and apparatus, and a device. The signal sending method comprises: a network side device determines a frequency domain resource mapping position of a first signal according to a first numerical value, maps a second signal to a corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, and sends the first signal, wherein the second signal is a WUS sequence to be transmitted; the first numerical value is greater than or equal to zero, and the first numerical value is smaller than or equal to a difference value between a first bandwidth and a second bandwidth; the first bandwidth is an initial bandwidth allocated by a system for the first signal; the second bandwidth is a minimum bandwidth for ensuring that the first signal is not distorted; and the size of the frequency domain resource for the mapping of the first signal is a difference value between the first bandwidth and the first numerical value.

Description

Signal sending and receiving method, device and equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202310014476.X filed in China on January 5, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a method, device and equipment for sending and receiving signals. Background Art

[0004] The 3rd Generation Partnership Project (3GPP) has started research work on introducing a low power wake up receiver / wake-up signal (LP WUR / WUS) into mobile communication systems since Rel-18.

[0005] Currently, the system allocates a relatively large bandwidth for WUS transmission and maps the WUS sequence to the frequency domain resources corresponding to the bandwidth for transmission. The applicant has found that this signal frequency domain resource mapping method wastes frequency domain resources and needs to be improved.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a signal sending and signal receiving method, apparatus, and device to reduce the occupation of frequency domain resources by WUS signals and avoid wasting frequency domain resources.

[0008] In a first aspect, a signal transmission method is provided, the method comprising:

[0009] The network-side device determines a frequency domain resource mapping position of the first signal based on a first value, wherein the first value is greater than or equal to zero, and the first value is less than or equal to a difference between a first bandwidth and a second bandwidth, the first bandwidth is an initial bandwidth allocated by the system to the first signal, the second bandwidth is a minimum bandwidth to ensure that the first signal is not distorted, and the size of the frequency domain resource mapped to the first signal is the difference between the first bandwidth and the first value;

[0010] The network-side device maps the second signal to the corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, wherein the second signal is a wake-up signal WUS sequence to be transmitted;

[0011] The network-side device sends the first signal.

[0012] In a second aspect, a signal receiving method is provided, the method comprising:

[0013] The terminal receives the first signal;

[0014] In which, the first signal is obtained by mapping the second signal to the corresponding frequency domain resource, the second signal is a wake-up signal WUS sequence, the frequency domain resource mapping position of the first signal is determined according to a first value, the first value is greater than or equal to zero, and the first value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first value.

[0015] According to a third aspect, a signal sending device is provided, the device comprising:

[0016] a position determination module, configured to determine a frequency domain resource mapping position of a first signal based on a first value, wherein the first value is greater than or equal to zero and is less than or equal to a difference between a first bandwidth and a second bandwidth, the first bandwidth being an initial bandwidth allocated by the system to the first signal, the second bandwidth being a minimum bandwidth to ensure that the first signal is not distorted, and a size of the frequency domain resource mapped to the first signal being the difference between the first bandwidth and the first value;

[0017] a resource mapping module, configured to map the second signal to the corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, wherein the second signal is a wake-up signal WUS sequence to be transmitted;

[0018] A signal sending module is used to send the first signal.

[0019] In a fourth aspect, a signal receiving device is provided, the device comprising:

[0020] A signal receiving module, configured to receive a first signal;

[0021] In which, the first signal is obtained by mapping the second signal to the corresponding frequency domain resource, the second signal is a wake-up signal WUS sequence, the frequency domain resource mapping position of the first signal is determined according to a first value, the first value is greater than or equal to zero, and the first value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first value.

[0022] In the fifth aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the signal sending method described in the first aspect are implemented.

[0023] In a sixth aspect, a terminal device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the signal receiving method described in the second aspect are implemented.

[0024] In the seventh aspect, a network side device is provided, including a processor and a communication interface, wherein the processor is used to determine the frequency domain resource mapping position of the first signal according to a first value, and map the second signal to the corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, wherein the second signal is a wake-up signal WUS sequence to be transmitted, the first value is greater than or equal to zero, and the first value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first value; the communication interface is used to send the first signal.

[0025] In the eighth aspect, a terminal device is provided, including a processor and a communication interface, wherein the communication interface is used to receive a first signal; wherein, the first signal is obtained by mapping the second signal to the corresponding frequency domain resource, the second signal is a wake-up signal WUS sequence, and the frequency domain resource mapping position of the first signal is determined according to a first value, the first value is greater than or equal to zero, and the first value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first value.

[0026] In the ninth aspect, a communication system is provided, comprising a network side device and a terminal, wherein the network side device is used to execute the steps of the signal sending method as described in the first aspect, and the terminal is used to execute the steps of the signal receiving method as described in the second aspect.

[0027] In a tenth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect or the second aspect are implemented.

[0028] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect or the second aspect.

[0029] In the twelfth aspect, a computer program / program product is provided, which is stored in a non-volatile storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect or the second aspect.

[0030] In an embodiment of the present application, the network side device determines the frequency domain resource mapping position of the first signal based on the first value, and maps the second signal (the wake-up signal WUS sequence to be transmitted) to the corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, wherein the first value is greater than or equal to zero, and the first value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first value. Since the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first value, this mapping method makes the bandwidth occupied by the first signal smaller than the first bandwidth, thereby reducing the occupation of frequency resources by the first signal, avoiding waste of frequency resources, and improving spectrum utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a block diagram of a wireless communication system provided in an embodiment of the present application.

[0032] FIG2 is a schematic diagram of the working principle of NR LP WUR / WUS provided in an embodiment of the present application.

[0033] FIG3 is a flow chart of a signal sending method provided in an embodiment of the present application.

[0034] FIG4 is a schematic diagram of the frequency domain resource mapping position of the first signal obtained by applying the signal sending method provided in an embodiment of the present application.

[0035] FIG5A is a schematic diagram of frequency-power variation of a first signal provided by an embodiment of the present application.

[0036] FIG5B is a schematic diagram of a mapping effect of a first signal provided by an embodiment of the present application.

[0037] FIG6A is a schematic diagram showing a mapping effect of a first signal according to another embodiment of the present application.

[0038] FIG6B is a second schematic diagram of the mapping effect of the first signal provided by another embodiment of the present application.

[0039] FIG7A is a schematic diagram of a mapping effect of a first signal provided in another embodiment of the present application.

[0040] FIG7B is a second schematic diagram of the mapping effect of the first signal provided by yet another embodiment of the present application.

[0041] FIG8 is a flow chart of a signal receiving method provided in an embodiment of the present application.

[0042] FIG9 is a schematic structural diagram of a signal sending device provided in an embodiment of the present application.

[0043] FIG10 is a schematic structural diagram of a signal receiving device provided in an embodiment of the present application.

[0044] FIG11 is a schematic structural diagram of a communication device of the present application.

[0045] FIG12 is a schematic diagram of the hardware structure of the terminal device provided in an embodiment of the present application.

[0046] FIG13 is a schematic diagram of the hardware structure of the network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0048] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0049] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and the NR terminology is used in most of the following description, but these technologies can also be applied to applications other than NR system applications, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0050] FIG1 shows a block diagram of a wireless communication system applicable to embodiments of the present application. The wireless communication system includes a terminal 11 and a network-side device 12 . The terminal 11 may be a mobile phone, a tablet personal computer, a laptop computer or a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device (Wearable Device), a vehicle user equipment (VUE), a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, etc. The wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function, or a radio access network unit. The access network device may include a base station, a WLAN access point, or a WiFi node, etc. The base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home node B, a home evolved node B, a transmission reception point (TRP), or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0051] FIG2 shows the working principle of a low power wake up receiver (LP WUR).

[0052] As shown in Figure 2, the receiving end (low-power wake-up receiver) includes a first module 21 and a second module 22. The first module 21 is a main communication module for receiving and sending communication data transmitted by the transmitting end, and the second module 22 is a low-power module for receiving a low-power wake-up signal (LP WUS) and a low-power beacon signal sent by the transmitting end. The low-power wake-up signal is used to wake up the main communication module of the receiving end, and the low-power beacon signal is used to provide time reference information and other information for receiving the low-power wake-up signal, and can also provide wake-up link management.

[0053] As shown in Figure 2, when the first module 21 is not awakened by the second module 22, it remains in the off state and does not send or receive data. When downlink data arrives, the second module 22 detects the wake-up signal sent by the transmitter, and the wake-up signal contains the terminal information. Then, the second module 22 triggers the first module 21 to switch from the off state to the working state to receive and send data. The second module 22 can be turned on continuously or discontinuously. When the second module 22 is turned on, it can receive low-power wake-up signals and / or low-power beacon signals.

[0054] The transmitting end is generally a network side device, and the receiving end is generally a terminal. In the embodiment of the present application, the technical solution provided by the embodiment of the present application is introduced by taking the transmitting end as a network side device and the receiving end as a terminal as an example.

[0055] The system allocates a relatively large bandwidth for WUS transmission and maps the WUS sequence to the frequency domain resources corresponding to this bandwidth for transmission. Applicants have discovered that due to the short WUS sequence, some signals within the allocated bandwidth have low power, contributing little to the overall signal power. If WUS signals are always transmitted using the large bandwidth allocated by the system, frequency domain resources are likely to be wasted.

[0056] In order to solve the above problems, an embodiment of the present application proposes a signal sending method to reduce the occupation of frequency domain resources by WUS. The saved bandwidth can be used for the transmission of other signals, thereby avoiding the waste of frequency domain resources and improving spectrum utilization efficiency.

[0057] As shown in FIG3 , a signal sending method proposed in an embodiment of the present application may include:

[0058] Step 301: The network-side device determines the frequency domain resource mapping position of the first signal based on a first numerical value, wherein the first numerical value is greater than or equal to zero, and the first numerical value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped to the first signal is the difference between the first bandwidth and the first numerical value.

[0059] For ease of understanding, the first signal can be represented by y, and the first bandwidth can be represented by M. sc The first value may be represented by bw, and the difference between the first bandwidth and the second bandwidth may be represented by BW. As an example, the first value may be specifically represented as: bw=0, 1, .., BW.

[0060] Generally speaking, the frequency domain resource mapping position of the first signal includes the starting position of the frequency domain resource mapping, the ending position of the frequency domain resource mapping, and the position between the starting position and the ending position, and the frequency domain resource size of the first signal mapping is the frequency domain width between the starting position and the ending position.

[0061] As an example, the network side device determines the frequency domain resource mapping position of the first signal based on the first numerical value, which may include: the network side device determines the starting position of the frequency domain resource mapping of the first signal based on the radio resource control (RRC) status of the terminal; the network side device determines the ending position of the frequency domain resource mapping of the first signal based on the starting position, the first numerical value and the first bandwidth.

[0062] Since the starting position of the frequency domain resource mapping of the first signal and the frequency domain resource size of the first signal mapping (the difference between the first bandwidth and the first value) are known, the ending position of the frequency domain resource mapping of the first signal mapping can be obtained through simple calculation. Therefore, determining the starting position of the frequency domain resource mapping of the first signal is the key.

[0063] Further, as an example, the network side device determines the starting position of the frequency domain resource mapping of the first signal based on the RRC state of the terminal, which may include: the network side device determines the reference position based on the RRC state of the terminal; the network side device determines the starting position of the frequency domain resource mapping of the first signal based on the reference position.

[0064] The relationship between the RRC state of the terminal and the reference location may include:

[0065] 1) When the RRC state of the terminal is an idle state or an inactive state, the reference location may include at least one of the following:

[0066] A. Reference point A (point A);

[0067] B. The lower boundary of the initial downlink bandwidth part (initial DL BWP) allocated by the system to the first signal.

[0068] 2) When the RRC state of the terminal is connected, the reference location may include at least one of the following:

[0069] A. Reference point A (point A);

[0070] B. The lower boundary of the initial downlink bandwidth part (initial DL BWP) allocated by the system to the first signal.

[0071] C. The lower boundary of the active downlink bandwidth part (active DL BWP) allocated by the system to the first signal.

[0072] The indication method of the reference point A may include but is not limited to at least one of the following:

[0073] 1) The offset of reference point A relative to a specified frequency domain location, for example, the offset of a common resource block (CRB) relative to reference point A (offsetToPointA);

[0074] 2) The absolute position of reference point A in the frequency domain (absoluteFrequencyPointA).

[0075] The lower boundary of the initial downlink bandwidth part or the lower boundary of the activated downlink bandwidth part may be indicated by using a physical resource block (PRB).

[0076] The network-side device determining the starting position of the frequency domain resource mapping of the first signal based on the reference position may include: the network-side device determining an offset of the starting position of the frequency domain resource mapping of the first signal relative to the reference position. The offset amount may be determined by protocol pre-definition, network-side device configuration, or other methods.

[0077] It should be noted that in addition to the RRC status of the terminal, the starting position of the resource mapping of the first signal can also be determined based on other factors to ensure that the starting position and ending position of the resource mapping of the first signal are within the first bandwidth. The embodiments of the present application do not limit this.

[0078] Optionally, when determining the frequency domain resource mapping position of the first signal, the relatively low-frequency portion within the first bandwidth is utilized as much as possible, and some high frequencies are discarded to ensure the demodulation performance of the first signal at the receiving end of the first signal. This is because the impact of some high frequencies within the first bandwidth (some high frequencies near the end position of the first bandwidth) on the waveform of the first signal is reflected in the details of the waveform. Without this part of the frequency, the overall outline information of the waveform can also be retained. Therefore, this resource mapping method can save frequency domain resources and improve frequency domain resource utilization while ensuring the demodulation performance of the first signal.

[0079] FIG4 shows a schematic diagram of the frequency domain resource mapping position of the first signal obtained by applying the signal transmission method provided in an embodiment of the present application. Referring to FIG4, it can be seen that, assuming that the starting position of the frequency domain resource mapping of the first signal y is k0, then the ending position of the frequency domain resource mapping of the first signal y can be expressed as k0+M sc In addition, it can be seen from FIG4 that when the first value bw is introduced to constrain the end position (k0+M sc -bw-1), relative to the end position of the first bandwidth (k0+M sc -1), the frequency domain resources actually occupied by the first signal are reduced, thereby avoiding waste of frequency domain resources and saving frequency domain resources.

[0080] As shown in Figure 4, M sc The quantization unit of bw can be resource block (RB). Of course, M sc The quantization unit of bw may also be the absolute frequency domain width. One RB may include 12 resource elements (REs).

[0081] Step 302: The network-side device maps the second signal to the corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, wherein the second signal is a wake-up signal (WUS) sequence to be transmitted.

[0082] It can be understood that after determining the frequency domain resource mapping positions of the first signal, the second signal is mapped to the frequency domain resources corresponding to these frequency domain resource mapping positions to obtain the first information.

[0083] As an example, the above step 302 may specifically include: the network-side device maps the second signal to the corresponding frequency domain resource according to the first mapping formula to obtain the first signal.

[0084] The first mapping formula may include but is not limited to any of the following:

[0085] In the above formula, y represents the first signal, x n represents the second signal, N represents the length of the second signal, M layer,symbol represents the target layer and target symbol of the mapping, k represents the frequency domain resource mapping position of the first signal, k=k0, k0+1, ..., k0+M sc -bw-1, k0 represents the starting position of the frequency domain resource mapping of the first signal, k0+M sc -bw-1 represents the end position of the frequency domain resource mapping of the first signal, k' represents the subcarrier position corresponding to the Fourier transform, M sc represents the first bandwidth, bw represents the first value, and w n,i Represents the matrix element at the corresponding position in the Fourier matrix, F _ Offset represents the offset of the frequency domain resource mapping position of the first signal.

[0086] The reason why F is introduced in the first mapping formula is _ Offset is because the difference in the reference point of the rotation (ifftshift) may cause the mapping result after rotation to not start from the zero frequency point. In order to compensate for the defect that the mapping result after rotation does not start from the zero frequency point, a constant can be added or subtracted during mapping, as shown in the above formula (2) and the above formula (4), adding or subtracting F _ If the rotation reference point is selected appropriately, the frequency domain resource can be moved to the zero frequency point by rotation after mapping using the mapping methods shown in the above formulas (1) and (3).

[0087] F _ The value of Offset is related to the rotation reference point. In an example, F _ The value of Offset may be half of the first bandwidth.

[0088] Optionally, the second signal is obtained based on a third signal, wherein the third signal is the original bit sequence to be transmitted. Specifically, the original bit sequence to be transmitted (the third signal) can be multiplied by the oversampling r to form an oversampling sequence, which is encoded using a coding method specified by the network-side device and then scrambled to form a second signal sequence. The coding method can be one of Manchester coding and repetition coding, and the scrambling method can be one of ZC sequence, gold sequence, m sequence, and binary phase shift keying (BPSK).

[0089] Optionally, the waveform of the third signal may be at least one chip waveform transmitted in an orthogonal frequency division multiplexing (OFDM) symbol.

[0090] Furthermore, the waveform of the third signal may include but is not limited to any of the following:

[0091] Multi-carrier On-Off Keying (OOK) waveform;

[0092] Multi-carrier Amplitude Shift Keying (ASK) waveform;

[0093] Multi-carrier Frequency Shift Keying (FSK) waveform.

[0094] Optionally, a method for determining the difference between the first bandwidth and the second bandwidth includes at least one of the following:

[0095] 1) Protocol pre-definition;

[0096] 2) Network side equipment configuration;

[0097] 3) determined according to the value of the first bandwidth and the value of the second bandwidth;

[0098] 4) determining according to the value of the first bandwidth and the proportional coefficient;

[0099] 5) determined according to the value of the second bandwidth and the proportional coefficient;

[0100] 6) Determined based on the bandwidth occupied by the first signal transmitted last time;

[0101] 7) Determined according to the parameter value reported by the terminal.

[0102] In which, the proportional coefficient is the occupancy ratio of the second bandwidth to the first bandwidth (for example, 80%); the parameter value reported by the terminal includes parameters related to the received power of the first signal, such as the received power information of WUS at certain frequency points, specifically, the 3dB cutoff frequency of the low-pass filter in the terminal, the target frequency point and received power information at which the received power is lower than the first threshold, and so on.

[0103] Generally speaking, the first bandwidth is known. Then, when determining the difference between the first bandwidth and the second bandwidth based on the parameter value reported by the terminal, the second bandwidth can be first determined based on the parameter value reported by the terminal, and then the difference between the first bandwidth and the second bandwidth can be determined. For example, if the parameter value reported by the terminal includes a target frequency point at which the received power is lower than the first threshold and received power information, the end position of the second bandwidth can be first determined based on the target frequency point (usually, the location of the target frequency point is the end position of the second bandwidth). Then, since the starting position of the second bandwidth is usually the same as the starting position of the first bandwidth, the difference between the end position of the second bandwidth and the end position of the first bandwidth can be determined as the difference between the first bandwidth and the second bandwidth.

[0104] Step 303: The network-side device sends the first signal.

[0105] Specifically, after receiving the first signal, the network-side device may send the first signal to the terminal to wake up the main communication module in the terminal.

[0106] A signal sending method proposed in an embodiment of the present application is that the network side device determines the frequency domain resource mapping position of the first signal according to a first numerical value, and maps the second signal (the wake-up signal WUS sequence to be transmitted) to the corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, wherein the first numerical value is greater than or equal to zero, and the first numerical value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first numerical value. Since the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first numerical value, this mapping method makes the bandwidth occupied by the first signal smaller than the first bandwidth, thereby reducing the occupation of frequency resources by the first signal, avoiding waste of frequency resources, and improving spectrum utilization efficiency.

[0107] In addition, when determining the frequency domain resource mapping position of the first signal, the relatively low-frequency portion within the first bandwidth is utilized as much as possible, and some high frequencies are discarded to ensure the demodulation performance of the first signal at the receiving end. This is because the impact of some high frequencies within the first bandwidth (some high frequencies near the end position of the first bandwidth) on the waveform of the first signal is reflected in the details of the waveform. Without these frequencies, the overall outline information of the waveform can still be retained. Therefore, this resource mapping method can save frequency domain resources and improve frequency domain resource utilization while ensuring the demodulation performance of the first signal.

[0108] The following describes a signal sending method provided by this application through three specific embodiments.

[0109] In the following three embodiments, the first signal is represented by y, and the first bandwidth is represented by M. sc Indicates that the first value can be represented by bw, and the difference between the first bandwidth and the second bandwidth can be represented by BW, bw = 0, 1, .., BW; the starting position of the frequency domain resource mapping of the first signal y is k0, and the ending position of the frequency domain resource mapping of the first signal y can be represented by k0+M sc -bw-1.

[0110] In Figures 5A, 5B, 6A, 6B, 7A, and 7B, the horizontal axis represents frequency and the vertical axis represents the received power of the first signal. In addition, in Figures 6A, 6B, 7A, and 7B, the solid line represents the received waveform of the first signal and the dotted line represents the filtering range of the low-pass filter.

[0111] Example 1

[0112] There are several ways to determine k0:

[0113] 1) When the terminal is in the RRC_idle state or the RRC_inactive state, the determination of k0 may include:

[0114] A.k0 may be an offset relative to point A, where the indication of point A includes offsetToPointA (which may be indicated by CRB) and absoluteFrequencyPointA (the absolute position of point A in the frequency domain).

[0115] B.k0 can also be an offset relative to the lower boundary of the initial DL BWP (which can be indicated by PRB).

[0116] 2) When the terminal is in the RRC_connected state, the determination of k0 may include:

[0117] A.k0 may be an offset relative to point A, where the indication of point A includes offsetToPointA (which may be indicated by CRB) and absoluteFrequencyPointA (the absolute position of point A in the frequency domain).

[0118] B.k0 can also be an offset relative to the lower boundary of the initial DL BWP (which can be indicated by PRB).

[0119] C.k0 may also be an offset relative to the lower boundary of the active DL BWP (which may be indicated by PRB).

[0120] Furthermore, as shown in Figure 5A, the first bandwidth is the initial bandwidth allocated by the system to the first signal (also called the full bandwidth of the first signal), that is, the frequency resource between A and C in Figure 5A; the second bandwidth refers to the small bandwidth of the first signal or the minimum bandwidth that can restore the first signal, that is, the frequency resource between A and B in Figure 5A; BW represents the difference between the first bandwidth and the second bandwidth, that is, the frequency resource between B and C in Figure 5A.

[0121] The value of BW can be determined by at least one of the following methods:

[0122] 1) Protocol pre-definition;

[0123] 2) Network side equipment configuration;

[0124] 3) determined according to the value of the first bandwidth and the value of the second bandwidth;

[0125] 4) determining according to the value of the first bandwidth and the proportional coefficient;

[0126] 5) determined according to the value of the second bandwidth and the proportional coefficient;

[0127] 6) Determined based on the bandwidth occupied by the first signal transmitted last time;

[0128] 7) Determined according to the parameter value reported by the terminal.

[0129] In which, the proportional coefficient is the occupancy ratio of the second bandwidth to the first bandwidth (for example, 80%); the parameter value reported by the terminal includes parameters related to the received power of the first signal, such as the received power information of WUS at certain frequency points, specifically, the 3dB cutoff frequency of the low-pass filter in the terminal, the target frequency point and received power information at which the received power is lower than the first threshold, and so on.

[0130] Furthermore, the second signal may be mapped to the corresponding frequency domain resource using the following formula (i.e., formula (1) above) to obtain the first signal:

[0131] Wherein, y represents the first signal, x n represents the second signal, N represents the length of the second signal, M layer,symbol represents the target layer and target symbol of the mapping, k represents the frequency domain resource mapping position of the first signal, k=k0, k0+1, ..., k0+M sc -bw-1, k0 represents the starting position of the frequency domain resource mapping of the first signal, k0+M sc -bw-1 represents the end position of the frequency domain resource mapping of the first signal, M sc represents the first bandwidth, bw represents the first value, and w n,i Represents the matrix element at the corresponding position in the Fourier matrix.

[0132] It can be seen from the above formula that if the value of bw (first value) is different, the size of the frequency domain resources occupied by the first signal obtained by mapping the second signal to the corresponding frequency domain resources is also different. Two cases are listed below:

[0133] Case 1: When bw=0, the first signal is mapped on the full bandwidth, that is, the actual mapping bandwidth (actual occupied bandwidth) of the first signal is equal to the first bandwidth. As shown in FIG5A , y occupies all frequency domain resources in the first bandwidth.

[0134] Case 2: When bw=0.5*BW, the actual mapping bandwidth of the first signal occupies only a portion of the first bandwidth. As shown in FIG5B , y occupies the frequency domain resources of the low-frequency portion of the first bandwidth.

[0135] In the above scenario 2, although the actual mapping bandwidth of the first signal is narrowed, most frequencies are retained and some high frequencies are discarded to ensure the demodulation performance of the first signal at the receiving end. This is because the impact of some high frequencies within the first bandwidth (the high frequencies near the end of the first bandwidth) on the waveform of the first signal is reflected in the details of the waveform. Without these frequencies, the overall outline of the waveform can still be retained. Therefore, this resource mapping method can save frequency domain resources and improve frequency domain resource utilization while ensuring the demodulation performance of the first signal.

[0136] Example 2

[0137] If the first signal is generated in the manner described in the above embodiment (obtained by mapping according to formula (1) above), then on the terminal side, after the first signal is low-pass filtered, it is possible that a portion of the useful signal is outside the filtering range of the low-pass filter, thereby resulting in a reduction in the received power of the first signal, as specifically shown in FIG6A .

[0138] Therefore, when the network side device generates the first signal, this situation can be taken into consideration and the following formula (one implementation of the above formula (2), F _ Offset=M sc / 2Map the second signal to the corresponding frequency domain resources to obtain the first signal:

[0139] Wherein, y represents the first signal, x n represents the second signal, N represents the length of the second signal, M layer,symbol represents the target layer and target symbol of the mapping, k represents the frequency domain resource mapping position of the first signal, k=k0, k0+1, ..., k0+M sc -bw-1, k0 represents the starting position of the frequency domain resource mapping of the first signal, k0+M sc -bw-1 represents the end position of the frequency domain resource mapping of the first signal, M sc represents the first bandwidth, bw represents the first value, and w n,i Represents the matrix element at the corresponding position in the Fourier matrix.

[0140] The first signal obtained by mapping the above formula has a received waveform on the terminal side as shown in Figure 6B (shown by the solid line in Figure 6B). It can be seen from Figure 6B that the higher-power frequency portion of the first signal can be within the filtering range of the low-pass filter, thereby avoiding the waste of part of the useful signal power, ensuring the strength of the received power of the first signal, and thus ensuring the demodulation performance of the first signal.

[0141] Example 3

[0142] If the first signal is generated in the manner described in the above embodiment (obtained by mapping according to formula (1) above), then on the terminal side, after the first signal is low-pass filtered, it is possible that a portion of the useful signal is outside the 3dB cutoff frequency fc of the low-pass filter, thereby resulting in a reduction in the received power of the first signal, as specifically shown in FIG7A .

[0143] Therefore, when the network side device generates the first signal, this situation can be taken into consideration and the following formula (another implementation of the above formula (2), F _ Offset=M sc / 2) mapping the second signal to the corresponding frequency domain resources to obtain the first signal:

[0144] Wherein, y represents the first signal, x n represents the second signal, N represents the length of the second signal, Mlayer,symbol represents the target layer and target symbol of the mapping, k represents the frequency domain resource mapping position of the first signal, k=k0, k0+1, ..., k0+M sc -bw-1, k0 represents the starting position of the frequency domain resource mapping of the first signal, k0+M sc -bw-1 represents the end position of the frequency domain resource mapping of the first signal, M sc represents the first bandwidth, bw represents the first value, and w n,i Represents the matrix element at the corresponding position in the Fourier matrix.

[0145] The first signal obtained by mapping the above formula has a received waveform on the terminal side as shown in Figure 7B (shown by the solid line in Figure 7B). It can be seen from Figure 7B that the higher-power frequency portion of the first signal can be within the filtering range of the low-pass filter, thereby avoiding the waste of part of the useful signal power, ensuring the strength of the received power of the first signal, and thus ensuring the demodulation performance of the first signal.

[0146] Based on the above-mentioned signal sending method, an embodiment of the present application also provides a signal receiving method, which is described below.

[0147] As shown in FIG8 , a signal receiving method provided in an embodiment of the present application may include:

[0148] Step 801. The terminal receives a first signal, wherein the first signal is obtained by mapping a second signal to a corresponding frequency domain resource, the second signal is a wake-up signal WUS sequence, and the frequency domain resource mapping position of the first signal is determined according to a first value, the first value is greater than or equal to zero, and the first value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the size of the frequency domain resource mapped by the first signal is the difference between the first bandwidth and the first value.

[0149] For details on obtaining the first signal, please refer to the above introduction to a signal sending method, which will not be repeated here.

[0150] Optionally, if the actual mapping bandwidth of the first signal received by the terminal is different from the scheduled bandwidth of the first signal, the terminal receiving the first signal may include any one of the following:

[0151] 1) receiving the first signal according to the scheduled bandwidth of the first signal;

[0152] 2) Receive the first signal according to the actual mapping bandwidth of the received first signal.

[0153] Among them, the scheduling bandwidth of the first signal is generally the above-mentioned first bandwidth, that is, the scheduling bandwidth of the first signal is the initial bandwidth allocated by the system to the first signal; the actual mapping bandwidth of the first signal is the bandwidth actually occupied by the first signal obtained according to the frequency domain resource mapping position mapping, and the size of the actual mapping bandwidth of the first signal is the difference between the first bandwidth and the first value.

[0154] It can be understood that if the terminal receives the first signal according to the actual mapping bandwidth of the received first signal, the first signal can be demodulated more accurately to obtain the second signal.

[0155] It should be noted that the signal transmission method provided in the embodiment shown in FIG3 may be executed by a signal transmission device. In the embodiments of the present application, the signal transmission device provided in the embodiments of the present application is described by taking a signal transmission device executing the signal transmission method as an example. The signal receiving method provided in the embodiment shown in FIG8 may be executed by a signal receiving device. In the embodiments of the present application, the signal receiving device provided in the embodiments of the present application is described by taking a signal receiving device executing the signal receiving method as an example.

[0156] The following describes a signal transmission device provided in an embodiment of the present application in conjunction with the accompanying drawings. Since the signal transmission device provided in an embodiment of the present application corresponds to a signal transmission method provided in an embodiment of the present application, the description of the signal transmission device provided in an embodiment of the present application is relatively brief. For details, please refer to the introduction of the method embodiment section above.

[0157] As shown in FIG9 , an embodiment of the present application provides a signal sending device 900 . The device 900 may include: a location determination module 901 , a resource mapping module 902 , and a signal sending module 903 .

[0158] The position determination module 901 is used to determine the frequency domain resource mapping position of the first signal based on a first numerical value, wherein the first numerical value is greater than or equal to zero, and the first numerical value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped to the first signal is the difference between the first bandwidth and the first numerical value.

[0159] Generally speaking, the frequency domain resource mapping position of the first signal includes the starting position of the frequency domain resource mapping, the ending position of the frequency domain resource mapping, and the position between the starting position and the ending position, and the frequency domain resource size of the first signal mapping is the frequency domain width between the starting position and the ending position.

[0160] As an example, the position determination module 901 can be used to: determine the starting position of the frequency domain resource mapping of the first signal according to the radio resource control (RRC) status of the terminal; and determine the ending position of the frequency domain resource mapping of the first signal based on the starting position, the first value and the first bandwidth.

[0161] Since the starting position of the frequency domain resource mapping of the first signal and the frequency domain resource size of the first signal mapping (the difference between the first bandwidth and the first value) are known, the ending position of the frequency domain resource mapping of the first signal mapping can be obtained through simple calculation. Therefore, determining the starting position of the frequency domain resource mapping of the first signal is the key.

[0162] Further, as an example, the position determination module 901 may be configured to: determine a reference position according to an RRC state of the terminal; and determine a starting position of frequency domain resource mapping of the first signal according to the reference position.

[0163] The relationship between the RRC state of the terminal and the reference location may include:

[0164] 1) When the RRC state of the terminal is an idle state or an inactive state, the reference location may include at least one of the following:

[0165] A. Reference point A (point A);

[0166] B. The lower boundary of the initial downlink bandwidth part (initial DL BWP) allocated by the system to the first signal.

[0167] 2) When the RRC state of the terminal is connected, the reference location may include at least one of the following:

[0168] A. Reference point A (point A);

[0169] B. The lower boundary of the initial downlink bandwidth part (initial DL BWP) allocated by the system to the first signal.

[0170] C. The lower boundary of the active downlink bandwidth part (active DL BWP) allocated by the system to the first signal.

[0171] The indication method of the reference point A may include but is not limited to at least one of the following:

[0172] 1) The offset of reference point A relative to a specified frequency domain location, for example, the offset of a common resource block (CRB) relative to reference point A (offsetToPointA);

[0173] 2) The absolute position of reference point A in the frequency domain (absoluteFrequencyPointA).

[0174] The lower boundary of the initial downlink bandwidth part or the lower boundary of the activated downlink bandwidth part may be indicated by using a physical resource block (PRB).

[0175] Furthermore, the position determination module 901 may be configured to determine an offset of a starting position of the frequency domain resource mapping of the first signal relative to the reference position. The offset may be determined by protocol pre-definition, network-side device configuration, or the like.

[0176] It should be noted that in addition to the RRC status of the terminal, the starting position of the resource mapping of the first signal can also be determined based on other factors to ensure that the starting position and ending position of the resource mapping of the first signal are within the first bandwidth. The embodiments of the present application do not limit this.

[0177] Optionally, when determining the frequency domain resource mapping position of the first signal, the relatively low-frequency portion within the first bandwidth is utilized as much as possible, and some high frequencies are discarded to ensure the demodulation performance of the first signal at the receiving end of the first signal. This is because the impact of some high frequencies within the first bandwidth (some high frequencies near the end position of the first bandwidth) on the waveform of the first signal is reflected in the details of the waveform. Without this part of the frequency, the overall outline information of the waveform can also be retained. Therefore, this resource mapping method can save frequency domain resources and improve frequency domain resource utilization while ensuring the demodulation performance of the first signal.

[0178] The resource mapping module 902 is configured to map the second signal to the corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, wherein the second signal is a WUS sequence to be transmitted.

[0179] It can be understood that after determining the frequency domain resource mapping positions of the first signal, the second signal is mapped to the frequency domain resources corresponding to these frequency domain resource mapping positions to obtain the first information.

[0180] As an example, the resource mapping module 902 may be specifically configured to map the second signal to corresponding frequency domain resources according to a first mapping formula to obtain the first signal.

[0181] The first mapping formula may include but is not limited to any of the following:

[0182] In the above formula, y represents the first signal, x n represents the second signal, N represents the length of the second signal, M layer,symbol represents the target layer and target symbol of the mapping, k represents the frequency domain resource mapping position of the first signal, k=k0, k0+1, ..., k0+M sc -bw-1, k0 represents the starting position of the frequency domain resource mapping of the first signal, k0+M sc -bw-1 represents the end position of the frequency domain resource mapping of the first signal, k' represents the subcarrier position corresponding to the Fourier transform, M sc represents the first bandwidth, bw represents the first value, and w n,i Represents the matrix element at the corresponding position in the Fourier matrix.

[0183] Optionally, the above-mentioned resource mapping module 902 can be specifically used to: map the second signal to the corresponding frequency domain resource according to the first mapping formula, and rotate (ifftshift) the mapping result according to the second numerical value to obtain the first signal, wherein the second numerical value is the offset F_Offset relative to the first bandwidth, for example, F_Offset can be half of the first bandwidth.

[0184] The reason for introducing a second value when rotating the mapping result is that the mapping result after rotation does not start from the zero frequency point due to the different rotation reference points. To compensate for the defect that the mapping result after rotation does not start from the zero frequency point, a constant (the second value mentioned above) can be added or subtracted during the rotation. If the rotation reference point is selected appropriately, the frequency domain resource can be directly shifted to the zero frequency point by rotating, as shown in the mapping method shown in formulas (1) and (3) above.

[0185] Optionally, the second signal is obtained based on a third signal, wherein the third signal is the original bit sequence to be transmitted. Specifically, the original bit sequence to be transmitted (the third signal) can be multiplied by the oversampling r to form an oversampling sequence, which is encoded using a coding method specified by the network-side device and then scrambled to form a second signal sequence. The coding method can be one of Manchester coding and repetition coding, and the scrambling method can be one of ZC sequence, gold sequence, m sequence, and binary phase shift keying (BPSK).

[0186] Optionally, the waveform of the third signal may be at least one chip waveform transmitted in an orthogonal frequency division multiplexing (OFDM) symbol.

[0187] Furthermore, the waveform of the third signal may include but is not limited to any of the following:

[0188] Multi-carrier On-Off Keying (OOK) waveform;

[0189] Multi-carrier Amplitude Shift Keying (ASK) waveform;

[0190] Multi-carrier Frequency Shift Keying (FSK) waveform.

[0191] Optionally, a method for determining the difference between the first bandwidth and the second bandwidth includes at least one of the following:

[0192] 1) Protocol pre-definition;

[0193] 2) Network side equipment configuration;

[0194] 3) determined according to the value of the first bandwidth and the value of the second bandwidth;

[0195] 4) determining according to the value of the first bandwidth and the proportional coefficient;

[0196] 5) determined according to the value of the second bandwidth and the proportional coefficient;

[0197] 6) Determined based on the bandwidth occupied by the first signal transmitted last time;

[0198] 7) Determined according to the parameter value reported by the terminal.

[0199] In which, the proportional coefficient is the occupancy ratio of the second bandwidth to the first bandwidth (for example, 80%); the parameter value reported by the terminal includes parameters related to the received power of the first signal, such as the received power information of WUS at certain frequency points, specifically, the 3dB cutoff frequency of the low-pass filter in the terminal, the target frequency point and received power information at which the received power is lower than the first threshold, and so on.

[0200] The signal sending module 903 is configured to send the first signal.

[0201] Specifically, the signal sending module 903 may send a first signal to the terminal to wake up the main communication module in the terminal.

[0202] A signal sending device proposed in an embodiment of the present application can determine the frequency domain resource mapping position of the first signal according to a first numerical value, and map the second signal (the wake-up signal WUS sequence to be transmitted) to the corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, wherein the first numerical value is greater than or equal to zero, and the first numerical value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first numerical value. Since the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first numerical value, this mapping method makes the bandwidth occupied by the first signal smaller than the first bandwidth, thereby reducing the occupation of frequency resources by the first signal, avoiding waste of frequency resources, and improving spectrum utilization efficiency.

[0203] In addition, when determining the frequency domain resource mapping position of the first signal, the relatively low-frequency portion within the first bandwidth is utilized as much as possible, and some high frequencies are discarded to ensure the demodulation performance of the first signal at the receiving end. This is because the impact of some high frequencies within the first bandwidth (some high frequencies near the end position of the first bandwidth) on the waveform of the first signal is reflected in the details of the waveform. Without these frequencies, the overall outline information of the waveform can still be retained. Therefore, this resource mapping method can save frequency domain resources and improve frequency domain resource utilization while ensuring the demodulation performance of the first signal.

[0204] The signal sending device 900 in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a network-side device.

[0205] As shown in FIG10 , an embodiment of the present application provides a signal receiving device 1000 . The device 1000 may include: a signal receiving module 1001 .

[0206] The signal receiving module 1001 is configured to receive a first signal.

[0207] In which, the first signal is obtained by mapping the second signal to the corresponding frequency domain resource, the second signal is a wake-up signal WUS sequence, the frequency domain resource mapping position of the first signal is determined according to a first value, the first value is greater than or equal to zero, and the first value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first value.

[0208] Optionally, if the actual mapping bandwidth of the first signal received by the signal receiving module 1001 is different from the scheduling bandwidth of the first signal, the signal receiving module 1001 may receive the first signal according to any one of the following:

[0209] 1) receiving the first signal according to the scheduled bandwidth of the first signal;

[0210] 2) Receive the first signal according to the actual mapping bandwidth of the received first signal.

[0211] Among them, the scheduling bandwidth of the first signal is generally the above-mentioned first bandwidth, that is, the scheduling bandwidth of the first signal is the initial bandwidth allocated by the system to the first signal; the actual mapping bandwidth of the first signal is the bandwidth actually occupied by the first signal obtained according to the frequency domain resource mapping position mapping, and the size of the actual mapping bandwidth of the first signal is the difference between the first bandwidth and the first value.

[0212] It can be understood that if the signal receiving module 1001 receives the first signal according to the actual mapping bandwidth of the received first signal, the first signal can be demodulated more accurately to obtain the second signal.

[0213] The signal receiving device 1000 in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal device.

[0214] As shown in Figure 11, an embodiment of the present application further provides a communication device 1100, including a processor 1101 and a memory 1102. The memory 1102 stores a program or instruction that can be run on the processor 1101. For example, when the communication device 1100 is a network-side device, the program or instruction is executed by the processor 1101 to implement the various steps of the signal transmission method embodiment shown in Figure 3 above, and can achieve the same technical effect. When the communication device 1100 is a terminal device, the program or instruction is executed by the processor 1101 to implement the various steps of the signal reception method embodiment shown in Figure 8 above, and can achieve the same technical effect.

[0215] An embodiment of the present application also provides a terminal device, which is used to implement the various steps of the signal receiving method embodiment corresponding to Figure 8 above.

[0216] An embodiment of the present application also provides a terminal, comprising a communication interface, wherein the communication interface is used to receive a first signal; wherein the first signal is obtained by mapping the second signal to the corresponding frequency domain resource, the second signal is a wake-up signal WUS sequence, and the frequency domain resource mapping position of the first signal is determined according to a first numerical value, the first numerical value is greater than or equal to zero, and the first numerical value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first numerical value. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Figure 12 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.

[0217] The terminal 1200 includes but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209 and at least some of the components of the processor 1210.

[0218] Those skilled in the art will appreciate that the terminal 1200 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1210 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG12 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0219] It should be understood that in an embodiment of the present application, the input unit 1204 may include a graphics processing unit (GPU) 12041 and a microphone 12042, and the graphics processor 12041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1207 includes a touch panel 12071 and at least one of other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include two parts: a touch detection device and a touch controller. Other input devices 12072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0220] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1201 may transmit the data to the processor 1210 for processing. Furthermore, the RF unit 1201 may send uplink data to the network-side device. Typically, the RF unit 1201 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0221] The memory 1209 can be used to store software programs or instructions and various data. The memory 1209 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1209 may include a volatile memory or a non-volatile memory, or the memory 1209 may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1209 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0222] Processor 1210 may include one or more processing units. Optionally, processor 1210 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1210.

[0223] Among them, the radio frequency unit 1201 is used to receive a first signal, wherein the first signal is obtained by mapping the second signal to the corresponding frequency domain resource, the second signal is a wake-up signal WUS sequence, and the frequency domain resource mapping position of the first signal is determined according to a first value, the first value is greater than or equal to zero, and the first value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first value.

[0224] It can be understood that if the terminal receives the first signal according to the actual mapping bandwidth of the received first signal, the first signal can be demodulated more accurately to obtain the second signal.

[0225] An embodiment of the present application further provides a network-side device, which is used to implement the various steps of the signal sending method embodiment corresponding to FIG. 3 above.

[0226] An embodiment of the present application also provides a network-side device, including a processor and a communication interface, wherein the processor is used to determine the frequency domain resource mapping position of the first signal based on a first numerical value, and map the second signal to the corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, wherein the second signal is a wake-up signal WUS sequence to be transmitted, the first numerical value is greater than or equal to zero, and the first numerical value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped by the first signal is the difference between the first bandwidth and the first numerical value; the communication interface is used to send the first signal.

[0227] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 13, network-side device 1300 includes an antenna 1301, a radio frequency device 1302, a baseband device 1303, a processor 1304, and a memory 1305. Antenna 1301 is connected to radio frequency device 1302. In the uplink direction, radio frequency device 1302 receives information via antenna 1301 and sends the received information to baseband device 1303 for processing. In the downlink direction, baseband device 1303 processes the information to be transmitted and sends it to radio frequency device 1302. Radio frequency device 1302 processes the received information and then sends it through antenna 1301.

[0228] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 1303 , which includes a baseband processor.

[0229] [Corrected on 20.02.2024 according to Rule 91] The baseband device 1303 may, for example, include at least one baseband board, on which a plurality of chips are arranged, as shown in FIG13 , one of the chips being, for example, a baseband processor, connected to the memory 1305 via a bus interface to call a program in the memory 1305 and execute the network device operations shown in the above method embodiments.

[0230] The network side device may further include a network interface 1306 , which is, for example, a common public radio interface (CPRI).

[0231] Specifically, the network side device 1300 of the embodiment of the present application also includes: instructions or programs stored in the memory 1305 and can be run on the processor 1304. The processor 1304 calls the instructions or programs in the memory 1305 to execute the method shown in Figure 3 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0232] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned signal sending method or signal receiving method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0233] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0234] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned signal sending method or signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0235] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0236] An embodiment of the present application further provides a computer program / program product, which is stored in a non-volatile storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned signal sending method or signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0237] An embodiment of the present application also provides a communication system, including: a network side device and a terminal device, wherein the network side device can be used to execute the steps of the signal sending method shown in Figure 3 above, and the terminal device can be used to execute the steps of the signal receiving method shown in Figure 8 above.

[0238] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0239] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the relevant technology, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network equipment, etc.) to execute the methods described in each embodiment of the present application.

[0240] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A signal sending method, the method comprising: The network side device determines the frequency domain resource mapping position of the first signal according to the first value, wherein the first value is greater than or equal to zero, and the first value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped to the first signal is the difference between the first bandwidth and the first value; The network side device maps the second signal to the corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, wherein the second signal is a wake-up signal WUS sequence to be transmitted; The network side device sends the first signal.

2. The method according to claim 1, wherein: The network side device determines the frequency domain resource mapping position of the first signal according to the first value, including: The network side device determines the starting position of the frequency domain resource mapping of the first signal according to the radio resource control RRC state of the terminal; The network-side device determines an end position of frequency domain resource mapping of the first signal according to the starting position, the first value, and the first bandwidth.

3. The method according to claim 2, wherein: The network side device determines, according to the radio resource control RRC state of the terminal, a starting position of the frequency domain resource mapping of the first signal, including: The network side device determines the reference location according to the radio resource control RRC state of the terminal; The network side device determines a starting position of frequency domain resource mapping of the first signal according to the reference position.

4. The method according to claim 3, wherein: When the RRC state of the terminal is an idle state or a deactivated state, the reference location includes at least one of the following: Reference point A; The lower boundary of the initial downlink bandwidth portion allocated by the system to the first signal.

5. The method according to claim 3, wherein: When the RRC state of the terminal is a connected state, the reference location includes at least one of the following: Reference point A; a lower boundary of an initial downlink bandwidth portion allocated by the system for the first signal; A lower boundary of the activated downlink bandwidth portion allocated by the system to the first signal.

6. The method according to claim 4 or 5, wherein: The indication method of the reference point A includes at least one of the following: The offset of reference point A relative to the specified frequency domain position; The absolute position of reference point A in the frequency domain.

7. The method according to any one of claims 3 to 5, wherein: The network side device determines, according to the reference position, a starting position of frequency domain resource mapping of the first signal, including: The network-side device determines an offset of a starting position of frequency-domain resource mapping of the first signal relative to the reference position.

8. The method according to claim 2, wherein: The network side device maps the second signal to the corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, including: The network side device maps the second signal to the corresponding frequency domain resource according to the first mapping formula to obtain the first signal; The first mapping formula includes any one of the following: Wherein, y represents the first signal, x n represents the second signal, N represents the length of the second signal, M layer,symbol represents the target layer and target symbol of the mapping, k represents the frequency domain resource mapping position of the first signal, k=k0, k0+1, ..., k0+M sc -bw-1, k0 represents the starting position of the frequency domain resource mapping of the first signal, k0+M sc -bw-1 represents the end position of the frequency domain resource mapping of the first signal, k' represents the subcarrier position corresponding to the Fourier transform, M sc represents the first bandwidth, bw represents the first value, and w n,i represents the matrix element at the corresponding position in the Fourier matrix, and F_Offset represents the offset of the frequency domain resource mapping position of the first signal.

9. The method according to claim 8, wherein: The value of F_Offset is half of the first bandwidth.

10. The method according to any one of claims 1-5, 8-9, wherein: The second signal is obtained according to the third signal; The third signal is an original bit sequence to be transmitted.

11. The method according to claim 10, wherein: The waveform of the third signal is at least one chip waveform transmitted in an orthogonal frequency division multiplexing (OFDM) symbol.

12. The method according to claim 11, wherein: The waveform of the third signal includes any one of the following: Multi-carrier on-off keying OOK waveform; Multi-carrier amplitude-shifted keying (ASK) waveform; Multi-carrier frequency shift keying FSK waveform.

13. The method according to any one of claims 1-5, 8-9, 11-12, wherein: The method for determining the difference between the first bandwidth and the second bandwidth includes at least one of the following: The protocol is predefined; Network side equipment configuration; Determining according to a value of the first bandwidth and a value of the second bandwidth; Determining according to the value of the first bandwidth and the proportionality coefficient; Determined according to the value of the second bandwidth and the proportionality coefficient; Determined according to the bandwidth occupied by the first signal transmitted last time; Determined according to the parameter value reported by the terminal; The proportional coefficient is the occupation ratio of the second bandwidth to the first bandwidth, and the parameter value reported by the terminal includes a parameter related to the receiving power of the first signal.

14. A signal receiving method, the method comprising: The terminal receives a first signal; in, The first signal is obtained by mapping the second signal to the corresponding frequency domain resources, the second signal is a wake-up signal WUS sequence, the frequency domain resource mapping position of the first signal is determined according to a first numerical value, the first numerical value is greater than or equal to zero, and the first numerical value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped to the first signal is the difference between the first bandwidth and the first numerical value.

15. The method according to claim 14, wherein: If the actual mapping bandwidth of the first signal received by the terminal is different from the scheduling bandwidth of the first signal, the receiving, by the terminal, of the first signal includes any one of the following: receiving the first signal according to the scheduled bandwidth of the first signal; The first signal is received according to an actual mapping bandwidth of the received first signal.

16. A signal sending device, comprising: a position determination module, configured to determine a frequency domain resource mapping position of a first signal according to a first value, wherein the first value is greater than or equal to zero, and the first value is less than or equal to a difference between a first bandwidth and a second bandwidth, the first bandwidth is an initial bandwidth allocated by the system to the first signal, the second bandwidth is a minimum bandwidth to ensure that the first signal is not distorted, and the size of the frequency domain resource mapped to the first signal is the difference between the first bandwidth and the first value; A resource mapping module, configured to map a second signal to a corresponding frequency domain resource according to the frequency domain resource mapping position to obtain the first signal, wherein the second signal is a wake-up signal WUS sequence to be transmitted; A signal sending module is used to send the first signal.

17. A signal receiving device, comprising: A signal receiving module, configured to receive a first signal; Among them, the first signal is obtained by mapping the second signal to the corresponding frequency domain resource, the second signal is a wake-up signal WUS sequence, the frequency domain resource mapping position of the first signal is determined according to a first numerical value, the first numerical value is greater than or equal to zero, and the first numerical value is less than or equal to the difference between the first bandwidth and the second bandwidth, the first bandwidth is the initial bandwidth allocated by the system to the first signal, the second bandwidth is the minimum bandwidth to ensure that the first signal is not distorted, and the frequency domain resource size mapped to the first signal is the difference between the first bandwidth and the first numerical value.

18. A network side device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the signal sending method according to any one of claims 1 to 13 are implemented.

19. A terminal comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the signal receiving method according to any one of claims 14 to 15 are implemented.

20. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the signal sending method according to any one of claims 1 to 13 or implements the steps of the signal receiving method according to any one of claims 14 to 15.

21. A computer program product, wherein the computer program product is executed by at least one processor to implement the signal sending method according to any one of claims 1 to 13 or the signal receiving method according to any one of claims 14 to 15.

22. An electronic device, comprising: the electronic device being configured to execute the signal sending method according to any one of claims 1 to 13 or implement the signal receiving method according to any one of claims 14 to 15.

23. A chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the signal sending method according to any one of claims 1 to 13 or the signal receiving method according to any one of claims 14 to 15.

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