Signal transmission method, communication apparatus, storage medium, and program product

Abstract

Embodiments of the present disclosure provide a signal transmission method, a communication apparatus, a storage medium, and a program product. The method comprises: transmitting a first signal, wherein the first signal is used for carrying at least one first sequence, and the first signal occupies at least one on-off keying (OOK) symbol or at least one orthogonal frequency division multiplexing (OFDM) symbol.

Description

Signal transmission methods, communication devices, storage media and software products

[0001] This disclosure claims priority to Chinese patent application No. 202410933466.0, filed on July 11, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a signal transmission method, communication device, storage medium, and program product. Background Technology

[0003] In the field of mobile communications, terminals can reduce power consumption and thus improve battery life by using sleep mode. For example, a terminal can periodically trigger a wake-up operation by detecting the presence of data transmission through the main receiver.

[0004] Low-power wake-up (LP-WU) is a low-power communication scheme for IoT devices. IoT devices can receive a low-power wake-up signal (LP-WU) through a separate receiver, triggering data transmission and reception by the main radio. When the IoT device does not detect the LP-WU signal, the main radio enters a deep sleep state, further reducing the terminal's power consumption. Summary of the Invention

[0005] On the one hand, a signal transmission method is provided. This method includes:

[0006] Send a first signal; the first signal is used to carry at least one first sequence; the first signal occupies at least one on / off keyed OOK symbol or at least one orthogonal frequency division multiplexing (OFDM) symbol.

[0007] Furthermore, another signal transmission method is provided. This method includes:

[0008] Receive a first signal; the first signal is used to carry at least one first sequence; the first signal occupies at least one on / off keying OOK symbol or at least one orthogonal frequency division multiplexing (OFDM) symbol.

[0009] On the other hand, a first node is provided. This node includes: a communication unit;

[0010] The communication unit is used to transmit a first signal; the first signal is used to carry at least one first sequence; the first signal occupies at least one on / off keying OOK symbol or at least one orthogonal frequency division multiplexing (OFDM) symbol.

[0011] On the other hand, a second node is provided. This node includes: a communication unit;

[0012] The communication unit is used to receive a first signal; the first signal is used to carry at least one first sequence; the first signal occupies at least one on / off keying OOK symbol or at least one orthogonal frequency division multiplexing (OFDM) symbol.

[0013] In another aspect, a communication device is provided. The communication device includes: a memory and a processor; the memory and the processor are coupled; the memory is used to store a computer program; the processor executes the computer program to implement the method described in any of the above embodiments.

[0014] In another aspect, a computer-readable storage medium is provided, on which computer program instructions are stored, which, when executed by a processor, implement the method described in any of the above embodiments.

[0015] In another aspect, a computer program product is provided, the computer program product including computer program instructions that, when executed by a processor, implement the method described in any of the above embodiments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 is an architecture diagram of a communication system according to some embodiments of the present disclosure.

[0018] Figure 2 is a flowchart of a signal processing method according to some embodiments of the present disclosure.

[0019] Figure 3 is a flowchart of another signal processing method according to some embodiments of the present disclosure.

[0020] Figure 4 is a flowchart of another signal processing method according to some embodiments of the present disclosure.

[0021] Figure 5 is a flowchart of another signal processing method according to some embodiments of the present disclosure.

[0022] Figure 6 is a flowchart of a signal transmission method according to some embodiments of the present disclosure.

[0023] Figure 7 is a structural diagram of a first signal according to some embodiments of the present disclosure.

[0024] Figure 8 is a flowchart of another signal transmission method according to some embodiments of the present disclosure.

[0025] Figure 9 is a structural diagram of a first node according to some embodiments of the present disclosure.

[0026] Figure 10 is a structural diagram of a second node according to some embodiments of the present disclosure.

[0027] Figure 11 is a structural diagram of a communication device according to some embodiments of the present disclosure. Detailed Implementation

[0028] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0029] It should be noted that in this disclosure, expressions such as "exemplarily" or "for example" are used to indicate that they are examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of expressions such as "exemplarily" or "for example" is intended to present the relevant concepts in a detailed manner.

[0030] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0031] In the description of this disclosure, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: only A, A and B, and only B. Furthermore, "at least one" means one or more, and "multiple" means two or more.

[0032] In the field of mobile communications, terminal communication involves issues such as latency, reliability, and availability. Furthermore, the energy efficiency of the terminal also affects the user experience. Currently, depending on individual usage time, terminals need to be charged weekly or daily. Typically, devices consume tens of milliwatts of power when in an idle / inactive state during radio resource control (RRC) operation, and hundreds of milliwatts during an RRC connection. Improving terminal battery life can effectively enhance the user experience.

[0033] As mentioned above, power consumption is affected by the terminal's state. Related technologies can periodically wake the terminal by configuring its wake-up cycle length (e.g., paging cycle). Currently, the wake-up cycle is typically configured using extended discontinuous reception (eDRX); however, this solution has high communication latency, affecting normal user operation.

[0034] Low-power wake-up (LP-WU) is a low-power communication scheme for IoT devices. IoT devices can receive a low-power wake-up signal (LP-WU) through a separate receiver, triggering data transmission and reception by the main radio. When the IoT device does not detect the LP-WU signal, the main radio enters a deep sleep state, further reducing the terminal's power consumption. Currently, there is no clearly defined transmission scheme for LP-WU signals in mobile communications.

[0035] Therefore, in the technical solution provided in this disclosure, the first node can send a first signal, which carries at least one first sequence. This first signal occupies at least one on-off keying (OOK) symbol or at least one orthogonal frequency division multiplexing (OFDM) symbol. Since OOK and OFDM symbols can carry low-power wake-up signals, this disclosure proposes a communication scheme that uses OOK and / or OFDM symbols in the time domain to transmit signals, enabling communication interaction between terminals during low-power wake-up.

[0036] The network architecture of the mobile communication network (including but not limited to 3G, 4G, 5G, and future mobile communication networks) in this disclosure embodiment may include at least a first communication node and a second communication node. It should be understood that, in this example, in the downlink, the first communication node may be a network-side device (e.g., including but not limited to a base station), and the second communication node may be a terminal-side device (e.g., including but not limited to a terminal). Of course, in the uplink, the first communication node may also be a terminal-side device, and the second communication node may also be a network-side device. In device-to-device communication between the two communication nodes, both the first and second communication nodes can be a base station or a terminal. The first and second communication nodes may be simply referred to as the first node and the second node, respectively.

[0037] For example, taking a first communication node as a base station and a second communication node as a terminal, as shown in Figure 1, Figure 1 is a communication system according to an embodiment of the present disclosure. The communication system includes a base station 101 and a terminal 102. There can be one or more base stations 101 and terminals 102, and the number is not limited.

[0038] Base station 101 is a device located on the access network side of the aforementioned communication system and having wireless transceiver function, or a chip or chip system that can be installed in the device. Base station 101 includes, but is not limited to: access points (APs) in WiFi systems, such as home gateways, routers, servers, switches, bridges, etc.; evolved NodeBs (eNBs); radio network controllers (RNCs); NodeBs (NBs); base station controllers (BSCs); base transceiver stations (BTSs); home base stations (e.g., home evolved NodeBs, or home NodeBs (HNBs)); base band units (BBUs); wireless relay nodes; wireless backhaul nodes; transmission and reception points (TRPs) or transmission points (TPs), etc.; it can also be a 5G base station, such as a gNB or transmission point (TRP or TP) in a new radio (NR) system, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system; or it can be a network node constituting a gNB or transmission point, such as a base band unit (BBU) or a distributed unit (DMU). Base station 101 includes various network configurations, such as a DU (Dedicated Unit), a roadside unit (RSU) with base station functionality, or NG radio access network (NG-Ran) equipment. Base station 101 also includes base stations in different networking modes, such as a master evolved NodeB (MeNB) and a secondary eNB (SeNB, or secondary gNB, SgNB). Base station 101 also includes different types, such as terrestrial base stations, airborne base stations, and satellite base stations.

[0039] Terminal 102 is a device with wireless communication capabilities that can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted. Terminal 102 can also be deployed on water (such as on ships). Terminal 102 can also be deployed in the air (e.g., on airplanes, balloons, and satellites). Terminal 102 is also known as user equipment (UE), mobile station (MS), mobile terminal (MT), and terminal equipment, and is a device that provides voice and / or data connectivity to users. For example, terminal 102 includes handheld devices and vehicle-mounted devices with wireless connectivity. Currently, terminal 102 can be: mobile phone, tablet computer, laptop computer, PDA, mobile internet device (MID), wearable device (e.g., smartwatch, smart bracelet, pedometer, etc.), in-vehicle device (e.g., car, bicycle, electric vehicle, airplane, ship, train, high-speed rail, etc.), virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, smart home device (e.g., refrigerator, television, air conditioner, electricity meter, etc.), smart robot, workshop equipment, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, or wireless terminal in smart home, flying device (e.g., smart robot, hot air balloon, drone, airplane), etc. In one exemplary application scenario of this disclosure, the terminal is a terminal that frequently operates on the ground, such as an in-vehicle device. In this embodiment of the disclosure, for ease of description, the chip deployed in the above-mentioned device, such as a system-on-a-chip (SOC), a baseband chip, or other chip with communication functions, may also be referred to as a terminal.

[0040] Base station 101 can wake up terminal 102 through a low-power wake-up mechanism.

[0041] For example, the low-power wake-up mechanism involves a low-power wake-up signal (LP-WUS), a low-power synchronization signal (LP-SS), and a low-power preamble (LP-Preamble).

[0042] LP-WUS is used to carry low-power wake-up information.

[0043] The functions of LP-SS include at least one of the following: performing radio resource management (RRM) measurements by detecting LP-SS, performing downlink synchronization by detecting LP-SS, and performing frequency offset correction by detecting LP-SS.

[0044] The functions of LP-Preamble include at least one of the following: performing RRM measurement by detecting LP-Preamble, performing downlink synchronization by detecting LP-Preamble, and performing frequency offset correction by detecting LP-Preamble.

[0045] In some embodiments, the transmission of LP-Preamble occurs before LP-WUS, and terminal 102 performs downlink synchronization and / or frequency offset correction by detecting LP-Preamble, thereby improving the detection performance of LP-WUS by terminal 102.

[0046] The waveform of the aforementioned signals (LP-WUS / LP-SS / LP-Preamble) can be generated using OOK modulation, and is referred to as OOK-based LP-WUS / LP-SS / LP-Preamble. Furthermore, in this disclosure, the aforementioned signals can be carried by multiple subcarriers; that is, when the number of subcarriers occupied by the OOK-based LP-WUS / LP-SS / LP-Preamble in the spectrum is greater than one, it is referred to as a multiple subcarrier (MC)-OOK-based LP-WUS / LP-SS / LP-Preamble.

[0047] In some embodiments, the present disclosure can generate MC-OOK based LP-WUS / LP-SS / LP-Preamble by means of method 1 or method 2.

[0048] Method 1: As shown in Figure 2, the data information transmitted on M OOK symbols is S M S M It contains M elements, namely SM The length is M, denoted as S. M =[s0,s1,s2,s3...,s M-1 The data information can include source information, verification information, and padding information, etc. This data information S M It can also be obtained after processing the data information to be transmitted. For example, data processing includes at least one of the following: segmentation, repetition, bit-level repetition, source coding, channel coding, modulation, interleaving, adding padding bits, adding cyclic redundancy check (CRC) bits, and rate matching. Data information S M It can be referred to as coded bit information, coded sequence information, or code word information.

[0049] Step 1: Transfer data information S M Convert to data information Q K , where Q K The length is K, where K is greater than or equal to 1.

[0050] For example, data information Q K It can satisfy either Formula 1 or Formula 2.

[0051] Where A0 represents Q K The first group of elements The number of elements, A1 represents Q. K The second group of elements The number of elements, and so on. A0 + A1 + ... A i +…+A M-1 =K. Parameter data in Formula 2 The value can be configured, 0≤i≤M-1.

[0052] S M element s in i Corresponding to Q K elements in or Q K A in i element or Some elements in the array can be configured as zero elements or predefined values.

[0053] Understandably, the Q shown above... KThe generation formula is only an example; other generation formulas that convert SM into data information QK of length K are not listed here.

[0054] Step 2: Process data information Q K The data information D is obtained by performing K-point Discrete Fourier Transform (DFT) / Fast Fourier Transform (FFT) operations. K =[d0,d1,d2,d3,...,d K-1 ].

[0055] In some embodiments, data information D can also be... K Perform at least one of the following operations:

[0056] For D K Perform an upward circular shift operation, the size of which is or Or K / 2;

[0057] For D K Perform a downward circular shift operation, the size of which is or Or K / 2;

[0058] For D K Perform a left circular shift operation, the size of which is or Or K / 2;

[0059] For D K Perform a right circular shift operation, the size of which is or Or K / 2.

[0060] in, This is the round-up operator. This is the floor operator.

[0061] For example, the above operations can be performed using the FFTSHIFT function, which is a function used to shift the zero-frequency component of the Fourier transform to the center of the spectrum. For a vector X, FFTSHIFT(X) swaps the left and right halves of X or swaps the top and bottom halves of X. For a matrix X, FFTSHIFT(X) swaps the first and third quadrants, and the second and fourth quadrants.

[0062] Step 3: Transfer data information D K The data is padded onto K subcarriers in the frequency domain and then subjected to an inverse Fourier transform to obtain the time-domain data T.N .

[0063] In some embodiments, the overall frequency domain bandwidth of the system includes N subcarriers and data information D. K For K subcarriers, the other subcarriers can be filled with other data to be transmitted. Then, an N-point inverse discrete Fourier transform (IDFT) / inverse fast Fourier transform (IFFT) operation is performed on the filled data on the N subcarriers to obtain time-domain data T with N sampling points. N =[t0,t1,t2,t3,...,t N-1 ]. N is greater than or equal to 1. T N =[t0,t1,t2,t3,...,t N-1 This refers to the sampling data of M OOK symbols.

[0064] For the sampling point data of the first OOK symbol out of M OOK symbols, This refers to the sampling data of the second OOK time-domain symbol out of M OOK time-domain symbols, and so on. This refers to the sampling point data of the Mth OOK time-domain symbol out of M OOK time-domain symbols.

[0065] In some embodiments, prior to performing the inverse Fourier transform, at least one of the following operations may be performed on the data padding on the N subcarriers:

[0066] Perform an upward circular shift operation on the data, with the shift size being... or Or N / 2;

[0067] Perform a downward circular shift operation on the data, with the shift size being... or Or N / 2;

[0068] Perform a left circular shift operation on the data, with the shift size being... or Or N / 2;

[0069] Perform a right circular shift operation on the data, with the shift size being... or Or N / 2.

[0070] in, This is the round-up operator. This is the floor operator.

[0071] Step 4: Based on the time-domain data T from N sampling points N =[t0,t1,t2,t3,...,t N-1 Add a cyclic prefix (CP), generate the first signal, and send the first signal.

[0072] The added cyclic prefix can be time-domain data T with N sampling points. N N at the tail cp The information from each sampling point, the generated first signal carries (N+N) cp The time-domain data consists of 10 sampling points. The first signal can be a wake-up signal, a synchronization signal, or a preamble signal, such as MC-OOK based LP-WUS / LP-SS / LP-Preamble.

[0073] Furthermore, in step 3 above, when the number of frequency domain subcarriers allocated for MC-OOK based LP-WUS / LP-SS / LP-Preamble is not K (for example, the allocated frequency domain subcarriers are K1, where K1 is not equal to K), as shown in Figure 3, step 3 above can be implemented through the following process.

[0074] (1) Data information D K =[d0,d1,d2,d3,…,d K-1 Perform data processing, and convert D K Convert to E K1 .

[0075] E K1 =[e0,e1,e2,e3,...,e K1-1 For example, conversion operations can include repeating, truncating, and drilling.

[0076] In some embodiments, E can also be used. K1 Perform at least one of the following operations:

[0077] For E K1 Perform an upward circular shift operation, the size of which is or Or K1 / 2;

[0078] For E K1 Perform a downward circular shift operation, the size of which is or Or K1 / 2;

[0079] For E K1 Perform a left circular shift operation, the size of which is or Or K1 / 2;

[0080] For E K1 Perform a right circular shift operation, the size of which is or Or K1 / 2.

[0081] in, This is the round-up operator. This is the floor operator.

[0082] (2) Transfer data information E K1 The data is filled onto K1 subcarriers in the frequency domain and then subjected to an inverse Fourier transform to obtain the time-domain data T. N .

[0083] Subsequent operations can be referred to steps 3-4 above, and will not be repeated here.

[0084] Method 2: As shown in Figure 4, the data information transmitted on M OOK symbols is S M S M It contains M elements, namely S M The length is M, denoted as S. M =[s0,s1,s2,s3...,s M-1 ].

[0085] Step 1: Transfer data information S M Convert to data information in, The length is Greater than or equal to 1.

[0086] For example, data information It can satisfy either Formula 3 or Formula 4.

[0087] Where A0 represents The first group of elements The number of elements, A1 represents The second group of elements The number of elements, and so on. Parameter data in Formula 4 The value can be configured, 0≤i≤M-1.

[0088] Step 2: Process the data information through the first processing module. The data information D is obtained through processing. K =[d0,d1,d2,d3,...,d K-1 ]T .

[0089] For example, data information D K Formula 5 can be satisfied.

[0090] in, Let F be the generalized inverse matrix, (F H F) -1 Represents matrix F H The inverse matrix of F, F H Denotes the conjugate transpose of matrix F. Representation matrix The transpose of .

[0091] F is a matrix consisting of K columns of elements in an IDFT matrix. A matrix with K rows and K columns. For example, an IDFT matrix can be represented by the following formula 6 or formula 7.

[0092] In this matrix, the K columns of the IDFT matrix that makes up F can be the Nth column elements of the IDFT matrix, and must consist of at least the data information D. K The positions or indices of the K subcarriers filled into the frequency domain are determined.

[0093] In some embodiments, D can also be used. K Perform at least one of the following operations:

[0094] For D K During the upward circular shift operation, the size of the circular shift is... or Or K / 2;

[0095] For D K During the downward circular shift operation, the size of the circular shift is... or Or K / 2;

[0096] For D K During a left circular shift operation, the size of the shift is... or Or K / 2;

[0097] For D K During a right circular shift operation, the size of the circular shift is... or Or K / 2.

[0098] in, This is the round-up operator. This is the floor operator.

[0099] Step 3: Transfer data information D K The data is padded onto K subcarriers in the frequency domain and then subjected to an inverse Fourier transform to obtain the time-domain data T. N .

[0100] In some embodiments, the overall frequency domain bandwidth of the system includes N subcarriers and data information D. K For K subcarriers, the other subcarriers can be filled with other data to be transmitted. Then, N-point IDFT / IFFT operations are performed on the filled data on the N subcarriers to obtain time-domain data T with N sampling points. N =[t0,t1,t2,t3,...,t N-1 ]. N is greater than or equal to 1. T N =[t0,t1,t2,t3,...,t N-1 This refers to the sampling data of M OOK symbols.

[0101] For the sampling point data of the first OOK symbol out of M OOK symbols, This refers to the sampling data of the second OOK time-domain symbol out of M OOK time-domain symbols, and so on. This refers to the sampling point data of the Mth OOK time-domain symbol out of M OOK time-domain symbols.

[0102] Step 4: Based on the time-domain data T from N sampling points N =[t0,t1,t2,t3,...,t N-1 Add a CP, generate the first signal, and send the first signal.

[0103] The added cyclic prefix can be time-domain data T with N sampling points. N N at the tail cp The information from each sampling point, the generated first signal carries (N+N) cp The time-domain data consists of 10 sampling points. The first signal can be a wake-up signal, a synchronization signal, or a preamble signal, such as MC-OOK based LP-WUS / LP-SS / LP-Preamble.

[0104] Furthermore, in step 3 above, when the number of frequency domain subcarriers allocated for MC-OOK based LP-WUS / LP-SS / LP-Preamble is not K (for example, the allocated frequency domain subcarriers are K1, where K1 is not equal to K), as shown in Figure 5, step 3 above can be implemented through the following process.

[0105] (1) Data information D is processed through the second processing module. K =[d0,d1,d2,d3,…,d K-1 Process D K Convert to E K1 .

[0106] E K1 =[e0,e1,e2,e3,...,e K1-1 For example, conversion operations can include repeating, truncating, and drilling.

[0107] (2) Transfer data information E K1 The data is filled onto K1 subcarriers in the frequency domain and then subjected to an inverse Fourier transform to obtain the time-domain data T. N .

[0108] Subsequent operations can be referred to steps 3-4 above, and will not be repeated here.

[0109] As one embodiment, the present disclosure embodiment can also process data information S in the following manner 1 or 2. M The data is processed to obtain data information Q. K or data information

[0110] Method 1: The data information transmitted on M OOK symbols is S M S M It contains M elements, namely S M The length is M, denoted as S. M =[s0,s1,s2,s3...,s M-1 ].

[0111] Step 1: Based on data information S M element s in i Generate Es i .

[0112] For example, Es i It can satisfy the following formulas 8, 9, 10, or 11.

[0113] Where, x i =0 or x i =s i y i =0 or y i =s i .

[0114] Step 2: Based on Es i Generate data information Q K or data information

[0115] Q K The length is K, where K is greater than or equal to 1. For example, K can be the number of subcarriers occupied by LP-WUS / LP-SS / LP-Preamble in the frequency domain.

[0116] It should be noted that the number of subcarriers corresponding to the protection bandwidth configured in the frequency domain for LP-WUS / LP-SS / LP-Preamble is not counted in the K subcarriers.

[0117] The length is in, It is an integer greater than or equal to 1. For example, The value of can be N. N is the number of subcarriers included in the system bandwidth.

[0118] Method 2: The data information transmitted on M OOK symbols is S M S M It contains M elements, namely S M The length is M, denoted as S. M =[s0,s1,s2,s3...,s M-1 ].

[0119] Step 1: Based on data information S M element s in i Generate Es i .

[0120] For example, Es i It can satisfy the following formulas: 12, 13, 14, or 15.

[0121] in, or for B in i Elements, for example It can be The last B in i There are n elements, 0 ≤ b i ≤B i -1.

[0122] or for C in i Elements, for example It can be The first C i There are elements, 0 ≤ ci ≤C i -1.

[0123] data The value can be configured, 0≤i≤M-1.

[0124] In some embodiments, data It consists of at least one of the following.

[0125] (1) Length is sequence

[0126] (2) Length is sequence for Center front an element or A zero element or A padding element, where the padding element can be any predefined element.

[0127] (3) Length is sequence for Mid-back an element or A zero element or A padding element.

[0128] For example, sequence It can be a binary random sequence, such as the Zadoff-Chu (ZC) sequence, the maximum length linear feedback shift register (M-sequence), or a pseudo noise (PN) sequence. It can also be a repetition of a binary random sequence.

[0129] In some embodiments, data It can be a combination of the above sequences, for example:

[0130] For example, data It can also be obtained by processing the elements of the above sequence. For example, one of the elements is Where 0≤a≤A i -1, can be used for Multiply by and / or divide by and / or add and / or subtract an element.

[0131] Step 2: Based on Es i Generate data information Q K or data information

[0132] Q K The length is K, where K is greater than or equal to 1. For example, K can be the number of subcarriers occupied by LP-WUS / LP-SS / LP-Preamble in the frequency domain.

[0133] It should be noted that the number of subcarriers corresponding to the protection bandwidth configured in the frequency domain for LP-WUS / LP-SS / LP-Preamble is not counted in the K subcarriers.

[0134] The length is in, It is an integer greater than or equal to 1. For example, The value of can be N. N is the number of subcarriers included in the system bandwidth.

[0135] It should be noted that the various embodiments of this disclosure can be referenced or learned from each other. For example, the same or similar steps, method embodiments, system embodiments and device embodiments can be referenced from each other without limitation.

[0136] Figure 6 is a flowchart of a signal transmission method according to an embodiment of the present disclosure. As shown in Figure 6, the method includes the following step 601.

[0137] Step 601: Send the first signal.

[0138] The first signal is used to carry at least one first sequence, and the first signal occupies at least one on / off keying OOK symbol or at least one orthogonal frequency division multiplexing (OFDM) symbol.

[0139] For example, the first signal can be a wake-up signal, a synchronization signal, or a preamble signal, such as LP-WUS, LP-SS, or LP-Preamble.

[0140] In some embodiments, there is a correspondence between OFDM symbols and OOK symbols, and the correspondence between OFDM symbols and OOK symbols satisfies at least one of the following:

[0141] An OFDM symbol includes at least one OOK symbol;

[0142] At least one OOK symbol occupies the same time-domain resources as one OFDM symbol;

[0143] The time-domain resources occupied by at least one OOK symbol are included in the time-domain resources corresponding to an OFDM symbol.

[0144] In some embodiments, the data information carried by at least one OOK symbol includes M elements, where M is a positive integer, and the M elements satisfy at least one of the following:

[0145] Includes at least one element whose value is the first value;

[0146] The number of elements whose value is the first value is half of the M elements;

[0147] The number of elements whose value is the first value is within the first interval;

[0148] The number of elements that take the second value is half of the M elements;

[0149] The number of elements with the second value is within the second interval;

[0150] The last element of the M elements has a value of 0 or -1.

[0151] For example, the M elements can be the data information S in the above embodiments. M =[s0,s1,s2,s3...,s M-1 Elements in ] . Data information S M This data information S can include source information, verification information, and padding information. M It can also be obtained after processing the data information to be transmitted. For example, data processing includes at least one of the following: segmentation, repetition, bit-level repetition, source coding, channel coding, modulation, interleaving, adding padding bits, adding CRC bits, and rate matching. Data information S M It can be referred to as coded bit information, coded sequence information, or code word information.

[0152] When half of the M elements is not an integer, it can be determined by rounding down or up. The first interval and the second interval can be determined by M and the bias. The first and second values ​​are used to represent two different values, such as 0 and 1, or 0 and -1, or 1 and -1, etc.

[0153] For example, the first interval can be [M / 2-X1, M / 2+Y1], where X1 and / or Y1 are integers greater than or equal to 0. For example, X1 and / or Y1 are 1 or 2. The second interval can be [M / 2-X2, M / 2+Y2], where X2 and / or Y2 are integers greater than or equal to 0. For example, X2 and / or Y2 are 1 or 2.

[0154] It should be noted that when the first signal occupies multiple OFDM symbols, some OFDM symbols may include M OOK symbols, other OFDM symbols may include other numbers of OOK symbols, or multiple OFDM symbols may each include M OFDM symbols.

[0155] In some embodiments, the length of the first sequence carried by the first signal is N. seq It occupies at least one OFDM symbol. One OFDM symbol includes M OOK symbols, and the M elements of the first sequence are carried in the M OOK symbols of one OFDM symbol. The expression of the M elements is at least one of the following:

[0156] In the technical solution provided in this disclosure, a first node can send a first signal, which carries at least one first sequence. This first signal occupies at least one on-off keying (OOK) symbol or at least one orthogonal frequency division multiplexing (OFDM) symbol. Since OOK and OFDM symbols can carry low-power wake-up signals, this disclosure proposes a communication scheme that uses OOK and / or OFDM symbols in the time domain to transmit signals, enabling communication interaction between terminals during low-power wake-up.

[0157] In some embodiments, the first sequence is determined by at least one of the following:

[0158] The corresponding second sequence;

[0159] The corresponding second sequence and at least one padding element;

[0160] The corresponding second sequence and at least one cyclic shift element, wherein the cyclic shift element is an element in the second sequence.

[0161] For example, at least one padding element is N1 elements, and at least one cyclic shift element is N2 elements, where N1 and N2 are positive integers. The N1 padding elements can be zero elements, and the N2 cyclic shift elements can be the first N2 elements or the last N2 elements in the second sequence, or the N2 elements of the first N3 elements and the last N4 elements in the second sequence, where N3 and N4 are positive integers.

[0162] The first N2 elements refer to the N2 elements starting from the first element of the second sequence, and the last N2 elements refer to the N2 elements counting backwards from the last element of the second sequence. The first N3 elements refer to the N3 elements starting from the first element of the second sequence, and the last N4 elements refer to the N4 elements counting backwards from the last element of the second sequence, where N3 and N4 are positive integers.

[0163] For example, the at least one cyclic shift element can be an element in the cyclic prefix and / or cyclic suffix of the second sequence. A cyclic prefix operation moves the signal from the tail of a signal to the head of a signal. A cyclic suffix operation moves the signal from the head of a signal to the tail of a signal.

[0164] For example, the first sequence can be formed by the cyclic prefix of the second sequence + the second sequence + the cyclic suffix of the second sequence. The first sequence can also be formed by the second sequence + the cyclic suffix of the second sequence. The first sequence can also be formed by the cyclic prefix of the second sequence + the second sequence + at least one padding element.

[0165] For example, the second sequence can be a binary sequence, a ZC sequence (Zadoff-Chu), a maximum length linear feedback shift register sequence (M sequence), or a pseudo noise sequence (PN sequence).

[0166] It should be noted that the binary sequence provided in this disclosure refers to a sequence composed of two different types of elements, such as a sequence composed of elements 0 and 1, a sequence composed of elements 0 and -1, a sequence composed of elements 1 and -1, etc.

[0167] Taking the M-sequence as an example, the M-sequence refers to the binary sequence generated by an n-stage shift register or its delay element through linear feedback. For an n-stage shift register, there can be a maximum of 2... n Since the all-zero state does not transition to other states, the longest period of the sequence corresponding to the n-stage shift register is 2. n-1. The feedback polynomial corresponding to an n-stage shift register affects the composition of the M-sequence generated by the n-stage shift register; different feedback polynomials correspond to different M-sequences. For example, the M-sequence generated by an n-stage shift register has a length N0 = 2. n -1.

[0168] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 4 OFDM symbols, i.e. 16 OOK symbols. The corresponding second sequence has a length N0 = 15, and the first sequence also includes a padding element of N1 = 1 bit (e.g., padding for 0 elements).

[0169] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 4 OFDM symbols, i.e. 16 OOK symbols. The corresponding second sequence length N0 = 15, and the first sequence also includes a cyclic shift element of N2 = 1 bit.

[0170] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =20, occupying 5 OFDM symbols, i.e. 20 OOK symbols. The corresponding second sequence length N0 = 15, and the first sequence also includes a cyclic shift element of N2 = 5 bits.

[0171] In some embodiments, at least one sequence carried by the first signal may correspond to the same first sequence. For example, the feedback polynomials of the second sequences corresponding to at least one first sequence are identical.

[0172] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 4 OFDM symbols, i.e., 16 OOK symbols. As shown in Table 1 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements in the first sequence.

[0173] Table 1 Binary Sequence List

[0174] Taking the first row as an example, the first sequence includes a total of 4 groups of M consecutive elements: [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], and [1, 0, 1, 0]. Each group contains M / 2 elements of 0 and 1.

[0175] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 4 OFDM symbols, i.e., 16 OOK symbols. As shown in Table 2 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements of the first sequence.

[0176] Table 2 Binary Sequence List

[0177] Taking the first row as an example, the first sequence includes a total of 4 groups of M consecutive elements: [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], and [1, 0, 1, 0]. Each group contains M / 2 elements of 0 and 1.

[0178] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 4 OFDM symbols, i.e., 16 OOK symbols. As shown in Table 3 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0179] Table 3 Binary Sequence List

[0180] Taking the first row as an example, the first sequence includes a total of 4 groups of M consecutive elements: [1, -1, 1, -1], [-1, -1, 1, 1], [1, -1, 1, -1], and [-1, -1, 1, 1]. Each group contains M / 2 elements of -1 and 1.

[0181] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =20, occupying 5 OFDM symbols, i.e., 20 OOK symbols. As shown in Table 4 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements in the first sequence.

[0182] Table 4 Binary Sequence List

[0183] Taking the first row as an example, the first sequence includes a total of 5 groups of M elements: [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], and [1, 0, 1, 0]. Each group contains M / 2 elements of 0 and 1.

[0184] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =20, occupying 5 OFDM symbols, i.e., 20 OOK symbols. As shown in Table 5 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0185] Table 5 Binary Sequence List

[0186] Taking the first row as an example, the first sequence includes a total of 5 groups of M elements: [1, 1, -1, -1], [-1, -1, 1, 1], [1, 1, -1, -1], [1, -1, 1, -1], [-1, 1, -1, 1]. Each group contains M / 2 elements of -1 and 1.

[0187] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =24, occupying 6 OFDM symbols, i.e., 24 OOK symbols. As shown in Table 6 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements in the first sequence.

[0188] Table 6 Binary Sequence List

[0189] Taking the first row as an example, the first sequence includes a total of 6 groups of M consecutive elements: [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], and [1, 0, 1, 0]. Each group contains M / 2 elements of 0 and 1.

[0190] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =24, occupying 6 OFDM symbols, i.e., 24 OOK symbols. As shown in Table 7 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0191] Table 7 Binary Sequence List

[0192] Taking the first row as an example, the first sequence includes a total of 6 groups of M consecutive elements: [1, 1, -1, -1], [-1, -1, 1, 1], [1, 1, -1, -1], [-1, 1, -1, 1], [-1, 1, 1, -1], [1, -1, -1, 1]. Each group contains M / 2 elements of -1 and 1.

[0193] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =28, occupying 7 OFDM symbols, i.e., 28 OOK symbols. As shown in Table 8 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements in the first sequence.

[0194] Table 8 Binary Sequence List

[0195] Taking the first row as an example, the first sequence includes a total of 7 groups of M elements: [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], and [1, 0, 1, 0]. Each group contains M / 2 elements of 0 and 1.

[0196] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =28, occupying 7 OFDM symbols, i.e., 28 OOK symbols. As shown in Table 9 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0197] Table 9 Binary Sequence List

[0198] Taking the first row as an example, the first sequence includes a total of 7 groups of M consecutive elements: [1, 1, -1, -1], [-1, -1, 1, 1], [1, 1, -1, -1], [-1, -1, 1, 1], [-1, 1, 1, -1], [1, -1, -1, 1], [-1, 1, -1, 1]. In each group, there are M / 2 elements of -1 and 1.

[0199] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq=32, occupying 8 OFDM symbols, i.e., 32 OOK symbols. As shown in Table 10 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements of the first sequence.

[0200] Table 10 Binary Sequence List

[0201] Taking the first row as an example, the first sequence includes a total of 8 groups of M elements: [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0], [1, 0, 1, 0]. Each group contains M / 2 elements of 0 and 1.

[0202] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =32, occupying 8 OFDM symbols, i.e., 32 OOK symbols. As shown in Table 11 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0203] Table 11 Binary Sequence List

[0204] Taking the first row as an example, the first sequence includes a total of 8 consecutive M elements: [1, 1, -1, -1], [-1, -1, 1, 1], [1, 1, -1, -1], [-1, -1, 1, 1], [1, -1, 1, -1], [-1, 1, -1, 1], [1, -1, 1, -1], [-1, 1, -1, 1]. In each group, there are M / 2 elements of -1 and 1.

[0205] For example, when one OFDM symbol includes M = 2 OOK symbols, the length N of the first sequence carried by the first signal is... seq =14, occupying 7 OFDM symbols, i.e., 14 OOK symbols. As shown in Table 12 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements of the first sequence.

[0206] Table 12 Binary Sequence List

[0207] Taking the first row as an example, the first sequence includes a total of 7 groups of M elements: [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0]. Each group contains M / 2 elements of 0 and 1.

[0208] For example, when one OFDM symbol includes M = 2 OOK symbols, the length N of the first sequence carried by the first signal is... seq =14, occupying 7 OFDM symbols, i.e., 14 OOK symbols. As shown in Table 13 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0209] Table 13 Binary Sequence List

[0210] Taking the first row as an example, the first sequence includes a total of 7 groups of M elements: [1, -1], [-1, 1], [1, -1], [-1, 1], [1, -1], [-1, 1], [1, -1]. In each group, there are M / 2 elements -1 and 1.

[0211] For example, when one OFDM symbol includes M = 2 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 8 OFDM symbols, i.e., 16 OOK symbols. As shown in Table 14 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements of the first sequence.

[0212] Table 14 Binary Sequence List

[0213] Taking the first row as an example, the first sequence includes a total of 7 groups of M elements: [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0]. Each group contains M / 2 elements of 0 and 1.

[0214] For example, when one OFDM symbol includes M = 2 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 8 OFDM symbols, i.e., 16 OOK symbols. As shown in Table 15 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0215] Table 15 Binary Sequence List

[0216] Taking the first row as an example, the first sequence includes a total of 8 groups of M elements: [1, -1], [-1, 1], [1, -1], [-1, 1], [1, -1], [-1, 1], [1, -1], [-1, 1]. Each group contains M / 2 elements of -1 and 1.

[0217] For example, when one OFDM symbol includes M = 2 OOK symbols, the length N of the first sequence carried by the first signal is... seq =28, occupying 14 OFDM symbols, i.e., 28 OOK symbols. As shown in Table 16 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements of the first sequence.

[0218] Table 16 Binary Sequence List

[0219] Taking the first row as an example, the first sequence includes 14 consecutive groups of M elements: [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0]. Each group contains M / 2 elements of 0 and 1.

[0220] For example, when one OFDM symbol includes M = 2 OOK symbols, the length N of the first sequence carried by the first signal is... seq =28, occupying 14 OFDM symbols, i.e., 28 OOK symbols. As shown in Table 17 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0221] Table 17 Binary Sequence List

[0222] Taking the first row as an example, the first sequence includes 14 consecutive groups of M elements: [1, -1], [-1, 1], [1, -1], [-1, 1], [1, -1], [-1, 1], [1, -1], [-1, 1], [1, -1], [1, -1], [1, -1], [-1, 1]. In each group, there are M / 2 elements -1 and 1.

[0223] For example, when one OFDM symbol includes M = 2 OOK symbols, the length N of the first sequence carried by the first signal is... seq=32, occupying 16 OFDM symbols, i.e., 32 OOK symbols. As shown in Table 18 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements in the first sequence.

[0224] Table 18 Binary Sequence List

[0225] Taking the first row as an example, the first sequence includes 14 consecutive M elements in total, namely [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0], [1,0]. Each group contains M / 2 elements of 0 and 1.

[0226] For example, when one OFDM symbol includes M = 2 OOK symbols, the length N of the first sequence carried by the first signal is... seq =32, occupying 16 OFDM symbols, i.e., 32 OOK symbols. As shown in Table 19 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0227] Table 19 Binary Sequence List

[0228] Taking the first row as an example, the first sequence includes a total of 16 consecutive groups of M elements: [1, -1], [-1, 1], [1, -1], [-1, 1], [1, -1], [-1, 1], [1, -1], [-1, 1], [1, -1], [-1, 1], [1, -1], [1, -1], [-1, 1], [-1, 1]. In each group, there are M / 2 elements of -1 and 1.

[0229] In some embodiments, different first sequences can be divided into multiple sets of first sequences to facilitate the classification and management of the first sequences.

[0230] For example, at least one first sequence is taken from a first sequence in one of a plurality of first sequence sets, and the feedback polynomials of the second sequences corresponding to the plurality of first sequence sets are different or configured separately or independently.

[0231] For example, the first sequence in the first sequence set constituted above can be used as the first signal of a base station or a cell (e.g., LP-WUS / LP-SS / LP-Preamble).

[0232] The first sequence in the first sequence set constituted above can also be used as the first signal of multiple base stations or multiple cells (e.g., LP-WUS / LP-SS / LP-Preamble).

[0233] In this way, multiple first sequences in the first sequence set can carry different information through different first sequences, thereby enabling the terminal to manage at the base station granularity or cell granularity.

[0234] In some embodiments, the first sequence described above may select either a padding element or a cyclic shifting element based on the configured number of elements or the number of OFDM symbols.

[0235] For example, the number of elements N in the first sequence config1 If the difference between the number of elements N0 in the corresponding second sequence and the first sequence is less than or equal to the first threshold Gap1, the first sequence consists of the corresponding second sequence and at least one padding element; and / or,

[0236] The number of elements N in the first sequence config1 If the difference between the number of elements N0 in the corresponding second sequence and the first sequence is greater than or equal to the second threshold Gap2, the first sequence consists of the corresponding second sequence and at least one cyclically shifted element.

[0237] The number of elements in the first sequence is N config1 This refers to the number of OOK symbols included in the resources configured for the first signal, or the maximum number of OOK symbols. For example, the resources configured for the first signal can be OFDM symbols, the number of configured OFDM symbols is 4, and the number of OOK symbols M included in one OFDM symbol is 4, then the number of OOK symbols included in the resources configured for the first signal is 4*4=16, or the maximum number of OOK symbols included in the resources configured for the first signal is 4*4=16. The first threshold Gap1 and / or the second threshold Gap2 are integers greater than or equal to 0. For example, the first threshold Gap1 and / or the second threshold Gap2 can be the number of OOK symbols M included in one OFDM symbol. The at least one cyclic shift element can be an element in the cyclic prefix and / or cyclic suffix of the second sequence.

[0238] For example, when the difference between the number of OFDM symbols configured in the first signal and the number of OFDM symbols carrying the first sequence is less than or equal to a third threshold gap3, the first sequence consists of a corresponding second sequence and at least one padding element; and / or,

[0239] When the difference between the number of OFDM symbols configured in the first signal and the number of OFDM symbols carrying the first sequence is greater than or equal to the fourth threshold Gap4, the first sequence consists of a corresponding second sequence and at least one cyclic shift element.

[0240] When an OFDM symbol contains M OOK symbols, the number of OFDM symbols carrying the first sequence is N0 / M, or (N0 / M) rounded up, or (N0 / M) rounded down. The third threshold Gap3 and / or the fourth threshold Gap4 are integers greater than or equal to 0. For example, the third threshold Gap3 and / or the fourth threshold Gap4 can be 1 or 2.

[0241] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 2 OFDM symbols, i.e. 16 OOK symbols. The corresponding second sequence has a length N0 = 15, and the first sequence also includes a padding element of N1 = 1 bit (e.g., padding for 0 elements).

[0242] As shown in Table 20 below, each column represents a binary sequence. It should be noted that the binary sequence table provided in this embodiment of the present disclosure only uses element -1 and element 1 to represent two different elements. The elements in the binary sequence can also be represented by other values. For example, element -1 can be replaced with 1 or 0, and element 1 can also be replaced with -1 or 0.

[0243] Table 20 Binary Sequence List

[0244] The first signal can be selected from columns 1-5 or columns 6-10. Taking the first column as an example, the sequence of the first 15 elements [-1, 1, -1, -1, 1, 1, -1, 1, -1, 1, 1, 1, 1, -1, -1] is the second sequence, and the 16th element -1 is the filler element.

[0245] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 2 OFDM symbols, i.e., 16 OOK symbols. The length of the corresponding second sequence is N0=15, and the first sequence also includes a cyclic shift element of N2=1 bits. Table 21 below shows the constructed binary sequence table.

[0246] Table 21 Binary Sequence List

[0247] The first signal can be selected from columns 1-3 or columns 4-6. Taking the first column as an example, the sequence of the first 15 elements [-1, 1, -1, -1, 1, 1, -1, 1, -1, 1, 1, 1, 1, -1, -1] is the second sequence, and the 16th element -1 is the cyclic shift element (e.g., the first element in the second sequence).

[0248] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =32, occupying 4 OFDM symbols, i.e., 32 OOK symbols. The corresponding second sequence length N0 = 31, and the first sequence also includes a padding element of N1 = 1 bit (e.g., padding with 0 elements). Table 22 below shows the constructed binary sequence table.

[0249] Table 22 Binary Sequence List

[0250] The first signal can be selected from columns 1 and 2. Taking the first column as an example, the sequence of the first 31 elements [1, 1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, 1, -1, -1, -1, -1, 1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1] is the second sequence, and the 32nd element -1 is the filler element.

[0251] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =32, occupying 4 OFDM symbols, i.e. 32 OOK symbols. The corresponding second sequence length N0 = 31, and the first sequence also includes a cyclic shift element of N2 = 1 bit.

[0252] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =64, occupying 8 OFDM symbols, i.e. 64 OOK symbols. The corresponding second sequence length N0 = 63, and the first sequence also includes N1 = 1 bit of padding elements (e.g., padding for 0 elements).

[0253] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =64, occupying 8 OFDM symbols, i.e. 64 OOK symbols. The corresponding second sequence length N0 = 63, and the first sequence also includes a cyclic shift element of N2 = 1 bit.

[0254] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =40, occupying 5 OFDM symbols, i.e. 40 OOK symbols. The corresponding second sequence length N0 = 31, and the first sequence also includes a cyclic shift element of N2 = 9 bits.

[0255] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =72, occupying 9 OFDM symbols, i.e. 72 OOK symbols. The corresponding second sequence length N0 = 63, and the first sequence also includes a cyclic shift element of N2 = 9 bits.

[0256] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 2 OFDM symbols, i.e., 16 OOK symbols. As shown in Table 23 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements of the first sequence.

[0257] Table 23 Binary Sequence List

[0258] Taking the first row as an example, the first sequence includes [1, 0, 1, 0, 1, 0, 1, 0] and [1, 0, 1, 0, 1, 0, 1, 0], a total of 2 groups of M consecutive elements, with M / 2 elements of 0 and 1 in each group.

[0259] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 2 OFDM symbols, i.e., 16 OOK symbols. As shown in Table 24 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements of the first sequence.

[0260] Table 24 Binary Sequence List

[0261] Taking the first row as an example, the first sequence includes [1, 0, 1, 0, 1, 0, 1, 0] and [1, 0, 1, 0, 1, 0, 1, 0], a total of 2 groups of M consecutive elements, with M / 2 elements of 0 and 1 in each group.

[0262] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =16, occupying 2 OFDM symbols, i.e., 16 OOK symbols. As shown in Table 25 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0263] Table 25 Binary Sequence List

[0264] Taking the first row as an example, the first sequence includes [1, 1, 1, -1, -1, -1, 1, -1] and [-1, -1, 1, -1, 1, -1, 1], a total of 2 groups of M consecutive elements, with M / 2 elements of -1 and 1 in each group.

[0265] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =24, occupying 3 OFDM symbols, i.e., 24 OOK symbols. As shown in Table 26 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements of the first sequence.

[0266] Table 26 Binary Sequence List

[0267] Taking the first row as an example, the first sequence includes [1, 0, 1, 0, 1, 0, 1, 0], [1, 0, 1, 0, 1, 0, 1, 0], and [1, 0, 1, 0, 1, 0, 1, 0], a total of 3 groups of M consecutive elements, with M / 2 elements of 0 and 1 in each group.

[0268] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =24, occupying 3 OFDM symbols, i.e., 24 OOK symbols. As shown in Table 27 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0269] Table 27 Binary Sequence List

[0270] Taking the first row as an example, the first sequence includes [1, 1, -1, -1, 1, 1, -1, -1], [-1, -1, -1, 1, -1, 1, 1, 1], and [1, -1, 1, -1, 1, -1, -1, 1], totaling two groups of M consecutive elements, with M / 2 elements of -1 and 1 in each group.

[0271] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =32, occupying 4 OFDM symbols, i.e., 32 OOK symbols. As shown in Table 28 below, each row represents a first sequence. "0" can be converted to "-1". There are M / 2 "1"s and M / 2 "0"s in the M consecutive elements in the first sequence.

[0272] Table 28 Binary Sequence List

[0273] Taking the first row as an example, the first sequence includes [1, 0, 1, 0, 1, 0, 1, 0], [1, 0, 1, 0, 1, 0, 1, 0], [1, 0, 1, 0, 1, 0, 1, 0], and [1, 0, 1, 0, 1, 0, 1, 0], a total of 4 groups of M consecutive elements, with M / 2 elements of 0 and 1 in each group.

[0274] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =32, occupying 4 OFDM symbols, i.e., 32 OOK symbols. As shown in Table 29 below, each row represents a first sequence. "-1" can be converted to "0". There are M / 2 "1"s and M / 2 "-1"s in the M consecutive elements of the first sequence.

[0275] Table 29 Binary Sequence List

[0276] Taking the first row as an example, the first sequence includes [1, -1, 1, 1, -1, 1, -1, -1], [1, -1, -1, -1, 1, -1, 1, 1], [1, -1, 1, 1, 1, -1, -1], [1, -1, -1, -1, -1, 1, 1, 1], a total of 4 groups of M consecutive elements, with M / 2 elements of -1 and 1 in each group.

[0277] In some embodiments, the first signal includes a preamble signal and / or a synchronization signal, wherein the first sequence carried by the synchronization signal consists of at least one of the following or multiple repetitions of at least one of the following:

[0278] The first sequence carried by the preamble signal;

[0279] The preamble signal carries a first sequence and at least one padding element;

[0280] The preamble carries a first sequence and at least one cyclic shift element; the cyclic shift element is an element in the second sequence;

[0281] The preamble carries a first sequence and a third sequence; the third sequence is composed of some elements from the first sequence carried by the preamble.

[0282] It should be noted that the aforementioned second sequence refers to the second sequence corresponding to the first sequence constituting the preamble signal. The at least one cyclic shift element can be an element in the cyclic prefix and / or cyclic suffix of the second sequence. A cyclic prefix operation moves the signal from the tail of a signal to the head of a signal. A cyclic suffix operation moves the signal from the head of a signal to the tail of a signal.

[0283] For example, given the number M of OOK symbols in an OFDM symbol, the length N of the first sequence corresponding to the preamble signal LP-Preamble is... seq The first sequence corresponding to the synchronization signal LP-SS can be multiple repetitions of the preamble signal LP-Preamble.

[0284] When the length of the binary sequence formed by multiple repetitions of the preamble signal LP-Preamble is insufficient to configure the length of the first sequence corresponding to the synchronization signal LP-SS, it can be supplemented by adding padding elements or cyclic shifting elements.

[0285] When the length of the binary sequence formed by multiple repetitions of the preamble signal LP-Preamble exceeds the length of the first sequence corresponding to the configured synchronization signal LP-SS, the length can be made equal to the length of the first sequence corresponding to the configured synchronization signal LP-SS by removing redundant elements. For example, elements can be deleted from the end of the binary sequence formed by multiple repetitions of the preamble signal LP-Preamble, or from the beginning of the binary sequence formed by multiple repetitions of the preamble signal LP-Preamble, or from within the binary sequence formed by multiple repetitions of the preamble signal LP-Preamble.

[0286] In some embodiments, the length of the first sequence carried by the first signal is determined at least based on the number of OOK symbols in the OFDM symbols.

[0287] For example, when the number of OOK symbols in an OFDM symbol is adjusted from M1 to P*M1, the length of the first sequence carried by the first signal is adjusted from N.seq1 Adjust to P*N seq1 .

[0288] N seq1 If P is greater than 0, then P is greater than 0. That is, the length of the first sequence carried by the first signal can be adjusted proportionally based on the change in the number of OOK symbols in the OFDM symbol.

[0289] As one embodiment, the first signal in this disclosure can also increase the data carrying capacity of the first signal through various types of OOK symbols, thereby improving communication efficiency.

[0290] In some embodiments, the type of the OOK symbol includes a first type and a second type.

[0291] The time-domain locations of Type I and Type II OOK symbols differ. For example, Type I OOK symbols are located within the OFDM symbol, while Type II OOK symbols are located within the cyclic prefix of the OFDM symbol. It should be noted that Type II OOK symbols can occupy all or part of the time-domain resources of the cyclic prefix within the OFDM symbol.

[0292] For frequency domain resources, the first type of OOK symbols and the second type of OOK symbols occupy the same frequency domain resources.

[0293] In some embodiments, the elements or information carried by the second type of OOK symbol are the same as those carried by the last first type of OOK symbol in the corresponding OFDM symbol. For example, as shown in FIG7, the first signal includes two first sequences, each first sequence being carried by eight first type OOK symbols and one second type OOK symbol. The time-domain positions of the first type OOK symbols OOK-1 to OOK-8 are located in the first OFDM symbol, the time-domain positions of the first type OOK symbols OOK-10 to OOK-17 are located in the second OFDM symbol, the time-domain position of the second type OOK symbol OOK-0 is located in the cyclic prefix of the first OFDM symbol, and the time-domain position of the second type OOK symbol OOK-9 is located in the cyclic prefix of the second OFDM symbol.

[0294] Based on the above technical solution, this disclosure can increase the data carrying capacity of the first signal by carrying elements or information on the cyclic prefix of the OFDM symbol, without affecting the current communication transmission method, thereby improving communication efficiency.

[0295] It should be noted that the first type of OOK symbol can be generated using the scheme provided in the above embodiments, which will not be elaborated here. The second type of OOK symbol can be determined based on the first type of OOK symbol.

[0296] In some embodiments, the elements or information carried by the second type of OOK symbol are generated in the following manner:

[0297] Generate a time-domain expression of the first length based on the time-domain expression of the last OOK symbol of the first type in the corresponding OFDM symbol; or

[0298] The first-length time-domain expression is generated based on the time-domain expression of the corresponding OFDM symbol.

[0299] For example, the time-domain expression of the first length in the time-domain expression of the last OOK symbol of the first type in the corresponding OFDM symbol can be the time-domain expression of the first length starting from the last OOK symbol of the first type, or the time-domain expression of the first length before the end time of the last OOK symbol of the first type.

[0300] The first length of the time domain expression in the time domain expression of the corresponding OFDM symbol can be the first length of the time domain expression at the beginning of the time domain expression of the OFDM symbol, or the time domain expression with the first length before the end time of the OFDM symbol.

[0301] In some embodiments, the first length is less than or equal to the length of the cyclic prefix in the OFDM symbol.

[0302] For example, when one OFDM symbol includes M = 4 OOK symbols, the length N of the first sequence carried by the first signal is... seq =15, occupying 3 OFDM symbols, i.e., 15 OOK symbols. The corresponding second sequence length N0 = 15. The number of OOK symbols of the first type is 12, and the number of OOK symbols of the second type is 3. Table 30 below shows the constructed binary sequence table.

[0303] Table 30 Binary Sequence List

[0304] The first signal can be selected from columns 1-3 or columns 4-6. Taking the first column as an example, the second type of OOK symbols carry the first element "1", the sixth element "-1", and the eleventh element "1" respectively. The sequence carried by the first OFDM symbol is [-1, -1, -1, 1], the sequence carried by the second OFDM symbol is [-1, 1, 1, -1], and the sequence carried by the third OFDM symbol is [-1, 1, 1, 1].

[0305] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq=18, occupying 2 OFDM symbols, i.e., 18 OOK symbols. The corresponding second sequence length N0 = 15, and the first sequence also includes N1 = 3 bits of padding elements (e.g., padding with 0 elements). The number of OOK symbols of the first type is 16, and the number of OOK symbols of the second type is 2. Table 31 below shows the constructed binary sequence table.

[0306] Table 31 Binary Sequence List

[0307] The first signal can be selected from columns 1-3 or columns 4-6. Taking the first column as an example, the second type of OOK symbols carry the first element "1" and the tenth element "-1". The sequence carried by the first OFDM symbol is [-1, -1, -1, 1, -1, -1, 1, 1], and the sequence carried by the second OFDM symbol is [1, -1, 1, 1, 1, -1, -1, -1].

[0308] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =18, occupying 2 OFDM symbols, i.e., 18 OOK symbols. The corresponding second sequence length N0 = 15, and the first sequence also includes a cyclic shift element of N2 = 3 bits. The number of OOK symbols of the first type is 16, and the number of OOK symbols of the second type is 2. Table 32 below shows the constructed binary sequence table.

[0309] Table 32 Binary Sequence List

[0310] The first signal can be selected from columns 1-3 or columns 4-6. Taking the first column as an example, the second type of OOK symbols carry the first element "1" and the tenth element "-1". The sequence carried by the first OFDM symbol is [-1, -1, -1, 1, -1, -1, 1, 1], and the sequence carried by the second OFDM symbol is [1, -1, 1, 1, 1, 1, -1, -1].

[0311] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =36, occupying 4 OFDM symbols, i.e., 36 OOK symbols. The corresponding second sequence length N0 = 31, and the first sequence also includes N1 = 5 bits of padding elements (e.g., padding with 0 elements). The number of OOK symbols of the first type is 32, and the number of OOK symbols of the second type is 4. Table 33 below shows the constructed binary sequence table.

[0312] Table 33 Binary Sequence List

[0313] The first signal can be selected from columns 1-4 or columns 5-8. Taking the first column as an example, the second type of OOK symbols carry the first element "1", the 10th element "-1", the 19th element "1", and the 28th element "-1". The sequence carried by the first OFDM symbol is [-1, 1, 1, 1, -1, 1, -1, 1], the sequence carried by the second OFDM symbol is [-1, -1, -1, 1, -1, -1, 1, -1], the sequence carried by the third OFDM symbol is [1, -1, -1, 1, 1, 1, 1, 1], and the sequence carried by the fourth OFDM symbol is [-1, -1, 1, -1, -1, -1, -1, -1].

[0314] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =36, occupying 4 OFDM symbols, i.e., 36 OOK symbols. The corresponding second sequence length N0 = 31, and the first sequence also includes a cyclic shift element of N1 = 5 bits. The number of OOK symbols of the first type is 32, and the number of OOK symbols of the second type is 4. Table 34 below shows the constructed binary sequence table.

[0315] Table 34 Binary Sequence List

[0316] The first signal can be selected from columns 1-3 or columns 4-6. Taking the first column as an example, the second type of OOK symbols carry the first element "1", the 10th element "1", the 19th element "-1", and the 28th element "1" respectively. The sequence carried by the first OFDM symbol is [1, 1, 1, 1, -1, -1, -1, 1], the sequence carried by the second OFDM symbol is [-1, 1, 1, 1, -1, 1, -1, 1], the sequence carried by the third OFDM symbol is [-1, -1, -1, 1, -1, -1, 1, -1], and the sequence carried by the fourth OFDM symbol is [1, -1, -1, 1, 1, 1, 1, 1].

[0317] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 35 below shows the constructed binary sequence table.

[0318] Table 35 Binary Sequence List

[0319] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "-1", the 19th element "1", the 28th element "-1", the 37th element "-1", the 46th element "1", and the 55th element "1". The sequence carried by the first OFDM symbol is [1, 1, -1, -1, -1, -1, -1, 1]. The sequence carried by the second OFDM symbol is [-1, -1, -1, 1, 1, -1, -1, -1]. The sequence carried by the third OFDM symbol is [-1, 1, -1, -1, 1, 1, 1, 1]. The sequence carried by the fourth OFDM symbol is [1, -1, -1, -1, 1, 1, 1, -1]. The sequence carried by the fifth OFDM symbol is [1, -1, -1, 1, -1, 1, 1, -1]. The sequence carried by the sixth OFDM symbol is [1, 1, -1, 1, 1, -1, -1, 1]. The sequence carried by the seventh OFDM symbol is [-1, 1, -1, 1, -1, 1, 1, 1].

[0320] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 36 below shows the constructed binary sequence table.

[0321] Table 36 Binary Sequence List

[0322] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "-1", the 19th element "1", the 28th element "1", the 37th element "1", the 46th element "-1", and the 55th element "-1". The sequence carried by the first OFDM symbol is [1, 1, -1, -1, -1, -1, -1, 1], the sequence carried by the second OFDM symbol is [1, 1, 1, 1, 1, 1, -1, -1], the sequence carried by the third OFDM symbol is [-1, 1, -1, 1, -1, -1, -1, 1], the sequence carried by the fourth OFDM symbol is [-1, -1, 1, 1, 1, 1, -1, 1], the sequence carried by the fifth OFDM symbol is [1, -1, 1, -1, 1, 1, -1, 1], the sequence carried by the sixth OFDM symbol is [-1, 1, 1, -1, 1, 1, -1, -1], and the sequence carried by the seventh OFDM symbol is [1, -1, -1, 1, -1, -1, -1, -1].

[0323] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 37 below shows the constructed binary sequence table.

[0324] Table 37 Binary Sequence List

[0325] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "1", the 19th element "1", the 28th element "-1", the 37th element "-1", the 46th element "1", and the 55th element "-1". The sequence carried by the first OFDM symbol is [-1, -1, -1, -1, -1, 1, 1, 1], the sequence carried by the second OFDM symbol is [1, 1, -1, 1, -1, 1, -1, 1], the sequence carried by the third OFDM symbol is [-1, -1, 1, 1, -1, 1, 1, 1], the sequence carried by the fourth OFDM symbol is [1, 1, -1, 1, -1, -1, 1, -1], the sequence carried by the fifth OFDM symbol is [1, 1, 1, -1, -1, 1, -1], the sequence carried by the sixth OFDM symbol is [1, 1, 1, -1, -1, 1, -1, 1], and the sequence carried by the seventh OFDM symbol is [-1, -1, 1, 1, -1, -1, -1, -1, -1].

[0326] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 38 below shows the constructed binary sequence table.

[0327] Table 38 Binary Sequence List

[0328] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "1", the 19th element "-1", the 28th element "-1", the 37th element "1", the 46th element "-1", and the 55th element "1". The sequence carried by the first OFDM symbol is [-1, -1, -1, -1, -1, 1, 1, 1], the sequence carried by the second OFDM symbol is [-1, -1, 1, -1, -1, 1, -1, 1], the sequence carried by the third OFDM symbol is [1, -1, -1, 1, 1, -1, 1, -1], the sequence carried by the fourth OFDM symbol is [-1, -1, 1, -1, -1, -1, 1, -1], the sequence carried by the fifth OFDM symbol is [1, -1, 1, 1, 1, 1, 1, 1], the sequence carried by the sixth OFDM symbol is [1, -1, 1, 1, 1, -1, -1], and the sequence carried by the seventh OFDM symbol is [1, -1, -1, 1, 1, 1, -1, 1].

[0329] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 39 below shows the constructed binary sequence table.

[0330] Table 39 Binary Sequence List

[0331] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "-1", the 19th element "-1", the 28th element "1", the 37th element "1", the 46th element "1", and the 55th element "-1". The sequence carried by the first OFDM symbol is [-1, -1, -1, -1, -1, 1, 1, 1], the sequence carried by the second OFDM symbol is [-1, -1, -1, 1, -1, -1, 1, -1], the sequence carried by the third OFDM symbol is [-1, 1, 1, -1, 1, 1, -1, -1], the sequence carried by the fourth OFDM symbol is [-1, 1, 1, -1, 1, -1, 1, 1], the sequence carried by the fifth OFDM symbol is [-1, 1, 1, 1, 1, -1, -1, 1], the sequence carried by the sixth OFDM symbol is [-1, -1, -1, 1, -1, 1, -1, 1], and the sequence carried by the seventh OFDM symbol is [-1, 1, 1, 1, 1, 1, 1, -1].

[0332] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 40 below shows the constructed binary sequence table.

[0333] Table 40 Binary Sequence List

[0334] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "1", the 19th element "-1", the 28th element "1", the 37th element "-1", the 46th element "-1", and the 55th element "1". The sequence carried by the first OFDM symbol is [1, 1, -1, -1, -1, -1, -1, 1]. The sequence carried by the second OFDM symbol is [-1, 1, 1, 1, -1, -1, 1, 1]. The sequence carried by the third OFDM symbol is [-1, -1, 1, 1, 1, -1, 1, -1]. The sequence carried by the fourth OFDM symbol is [1, 1, 1, 1, 1, -1, 1, 1]. The sequence carried by the fifth OFDM symbol is [1, -1, -1, -1, 1, -1, -1, -1]. The sequence carried by the sixth OFDM symbol is [1, -1, 1, 1, -1, -1, 1, -1]. The sequence carried by the seventh OFDM symbol is [-1, 1, -1, -1, 1, -1, -1, 1].

[0335] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 41 below shows the constructed binary sequence table.

[0336] Table 41 Binary Sequence List

[0337] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "-1", the 19th element "1", the 28th element "-1", the 37th element "-1", the 46th element "1", and the 55th element "1". The sequence carried by the first OFDM symbol is [1, 1, -1, -1, -1, -1, -1, 1]. The sequence carried by the second OFDM symbol is [-1, -1, -1, 1, 1, -1, -1, -1]. The sequence carried by the third OFDM symbol is [-1, 1, -1, -1, 1, 1, 1, 1]. The sequence carried by the fourth OFDM symbol is [1, -1, -1, -1, 1, 1, 1, -1]. The sequence carried by the fifth OFDM symbol is [1, -1, -1, 1, -1, 1, 1, -1]. The sequence carried by the sixth OFDM symbol is [1, 1, -1, 1, 1, -1, -1, 1]. The sequence carried by the seventh OFDM symbol is [-1, 1, -1, 1, -1, 1, 1, 1].

[0338] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 42 below shows the constructed binary sequence table.

[0339] Table 42 Binary Sequence List

[0340] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "-1", the 19th element "1", the 28th element "1", the 37th element "1", the 46th element "-1", and the 55th element "-1". The sequence carried by the first OFDM symbol is [1, 1, -1, -1, -1, -1, -1, 1], the sequence carried by the second OFDM symbol is [1, 1, 1, 1, 1, 1, -1, -1], the sequence carried by the third OFDM symbol is [-1, 1, -1, 1, -1, -1, -1, 1], the sequence carried by the fourth OFDM symbol is [-1, -1, 1, 1, 1, 1, -1, 1], the sequence carried by the fifth OFDM symbol is [1, -1, 1, -1, 1, 1, -1, 1], the sequence carried by the sixth OFDM symbol is [-1, 1, 1, -1, 1, 1, -1, -1], and the sequence carried by the seventh OFDM symbol is [1, -1, -1, 1, -1, -1, -1, -1].

[0341] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 43 below shows the constructed binary sequence table.

[0342] Table 43 Binary Sequence List

[0343] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "1", the 19th element "1", the 28th element "-1", the 37th element "-1", the 46th element "1", and the 55th element "-1". The sequence carried by the first OFDM symbol is [-1, -1, -1, -1, -1, 1, 1, 1], the sequence carried by the second OFDM symbol is [1, 1, -1, 1, -1, 1, -1, 1], the sequence carried by the third OFDM symbol is [-1, -1, 1, 1, -1, 1, 1, 1], the sequence carried by the fourth OFDM symbol is [1, 1, -1, 1, -1, -1, 1, -1], the sequence carried by the fifth OFDM symbol is [1, 1, 1, -1, -1, 1, -1], the sequence carried by the sixth OFDM symbol is [1, 1, 1, -1, -1, 1, -1, 1], and the sequence carried by the seventh OFDM symbol is [-1, -1, 1, 1, -1, -1, -1, -1, -1].

[0344] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 44 below shows the constructed binary sequence table.

[0345] Table 44 Binary Sequence List

[0346] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "1", the 19th element "-1", the 28th element "-1", the 37th element "1", the 46th element "-1", and the 55th element "1". The sequence carried by the first OFDM symbol is [-1, -1, -1, -1, -1, 1, 1, 1], the sequence carried by the second OFDM symbol is [-1, -1, 1, -1, -1, 1, -1, 1], the sequence carried by the third OFDM symbol is [1, -1, -1, 1, 1, -1, 1, -1], the sequence carried by the fourth OFDM symbol is [-1, -1, 1, -1, -1, -1, 1, -1], the sequence carried by the fifth OFDM symbol is [1, -1, 1, 1, 1, 1, 1, 1], the sequence carried by the sixth OFDM symbol is [1, -1, 1, 1, 1, -1, -1], and the sequence carried by the seventh OFDM symbol is [1, -1, -1, 1, 1, 1, -1, 1].

[0347] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 45 below shows the constructed binary sequence table.

[0348] Table 45 Binary Sequence List

[0349] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "-1", the 19th element "-1", the 28th element "1", the 37th element "1", the 46th element "1", and the 55th element "-1". The sequence carried by the first OFDM symbol is [-1, -1, -1, -1, -1, 1, 1, 1], the sequence carried by the second OFDM symbol is [-1, -1, -1, 1, -1, -1, 1, -1], the sequence carried by the third OFDM symbol is [-1, 1, 1, -1, 1, 1, -1, -1], the sequence carried by the fourth OFDM symbol is [-1, 1, 1, -1, 1, -1, 1, 1], the sequence carried by the fifth OFDM symbol is [-1, 1, 1, 1, 1, -1, -1, 1], the sequence carried by the sixth OFDM symbol is [-1, -1, -1, 1, -1, 1, -1, 1], and the sequence carried by the seventh OFDM symbol is [-1, 1, 1, 1, 1, 1, 1, -1].

[0350] For example, when one OFDM symbol includes M = 8 OOK symbols, the length N of the first sequence carried by the first signal is... seq =63, occupying 7 OFDM symbols, i.e., 63 OOK symbols. The corresponding second sequence length N0 = 63. The number of OOK symbols of the first type is 56, and the number of OOK symbols of the second type is 7. Table 46 below shows the constructed binary sequence table.

[0351] Table 46 Binary Sequence List

[0352] The first signal can be selected from columns 1-7. Taking the first column as an example, the second type of OOK symbol carries the first element "1", the 10th element "1", the 19th element "-1", the 28th element "1", the 37th element "-1", the 46th element "-1", and the 55th element "1". The sequence carried by the first OFDM symbol is [1, 1, -1, -1, -1, -1, -1, 1]. The sequence carried by the second OFDM symbol is [-1, 1, 1, 1, -1, -1, 1, 1]. The sequence carried by the third OFDM symbol is [-1, -1, 1, 1, 1, -1, 1, -1]. The sequence carried by the fourth OFDM symbol is [1, 1, 1, 1, 1, -1, 1, 1]. The sequence carried by the fifth OFDM symbol is [1, -1, -1, -1, 1, -1, -1, -1]. The sequence carried by the sixth OFDM symbol is [1, -1, 1, 1, -1, -1, 1, -1]. The sequence carried by the seventh OFDM symbol is [-1, 1, -1, -1, 1, -1, -1, 1].

[0353] Figure 8 is a flowchart of a signal transmission method according to an embodiment of the present disclosure. As shown in Figure 8, the method includes the following step 801.

[0354] Step 801: Receive the first signal.

[0355] The first signal is used to carry at least one first sequence; the first signal occupies at least one on / off keying OOK symbol or at least one orthogonal frequency division multiplexing (OFDM) symbol.

[0356] In some embodiments, the method further includes step 802.

[0357] Step 802: Decode the signals transmitted on the cyclic prefix and data portion of the OFDM symbol in the first signal to obtain the data information.

[0358] An OFDM symbol consists of a cyclic prefix and a data portion, which refers to the part of the OFDM symbol that follows the cyclic prefix.

[0359] For example, after receiving the first signal, the second node can obtain the sequence element information carried by the cyclic prefix and data portion of the OFDM symbol in the first signal by decoding the signal transmitted on the cyclic prefix and data portion of the OFDM symbol in the first signal.

[0360] Based on the above technical solution, the embodiments of this disclosure can decode the signals transmitted on the cyclic prefix and data portion of the OFDM symbol in the first signal, so as to carry elements or information on the cyclic prefix of the OFDM symbol, thereby increasing the data carrying capacity of the first signal without affecting the current communication transmission method and improving communication efficiency.

[0361] In some embodiments, the data information carried by at least one OOK symbol includes M elements; M is a positive integer, and the M elements satisfy at least one of the following:

[0362] Includes at least one element whose value is the first value;

[0363] The number of elements whose value is the first value is half of the M elements;

[0364] The number of elements whose value is the first value is within the first interval;

[0365] The number of elements that take the second value is half of the M elements;

[0366] The number of elements with the second value is within the second interval.

[0367] The last element of the M elements has a value of 0 or -1.

[0368] In some embodiments, the first sequence is determined by at least one of the following:

[0369] The corresponding second sequence;

[0370] The corresponding second sequence and at least one padding element;

[0371] The corresponding second sequence and at least one cyclic shift element; the cyclic shift element is an element in the second sequence.

[0372] In some embodiments, the feedback polynomials of the second sequences corresponding to at least one first sequence are the same.

[0373] In some embodiments, at least one first sequence is taken from a first sequence within one of a plurality of first sequence sets; the feedback polynomials of the second sequences corresponding to the plurality of first sequence sets are different or configured separately or independently.

[0374] In some embodiments, when the difference between the number of elements in the first sequence and the number of elements in the corresponding second sequence is less than or equal to a first threshold, the first sequence consists of the corresponding second sequence and at least one padding element; and / or,

[0375] If the difference between the number of elements in the first sequence and the number of elements in the corresponding second sequence is greater than or equal to a second threshold, the first sequence consists of the corresponding second sequence and at least one cyclically shifted element.

[0376] In some embodiments, when the difference between the number of OFDM symbols configured in the first signal configuration and the number of OFDM symbols carrying the first sequence is less than or equal to a third threshold, the first sequence consists of a corresponding second sequence and at least one padding element; and / or,

[0377] If the difference between the number of OFDM symbols configured in the first signal and the number of OFDM symbols carrying the first sequence is greater than or equal to a fourth threshold, the first sequence consists of a corresponding second sequence and at least one cyclic shift element.

[0378] In some embodiments, the first signal includes a preamble signal and / or a synchronization signal; the first sequence carried by the synchronization signal consists of at least one of the following or multiple repetitions of at least one of the following:

[0379] The first sequence carried by the preamble signal;

[0380] The preamble signal carries a first sequence and at least one padding element;

[0381] The preamble carries a first sequence and at least one cyclic shift element; the cyclic shift element is an element in the second sequence;

[0382] The preamble carries a first sequence and a third sequence; the third sequence is composed of some elements from the first sequence carried by the preamble.

[0383] In some embodiments, the length of the first sequence carried by the first signal is determined at least based on the number of OOK symbols in the OFDM symbols.

[0384] In some embodiments, when the number of OOK symbols in an OFDM symbol is adjusted from M1 to P*M1, the length of the first sequence carried by the first signal is adjusted from N. seq1 Adjust to P*N seq1 N seq1 If the value is greater than 0, then P is greater than 0.

[0385] In some embodiments, the types of OOK symbols include a first type and a second type; the time-domain position of the OOK symbol of the first type is located in the OFDM symbol, and the time-domain position of the OOK symbol of the second type is located in the cyclic prefix of the OFDM symbol.

[0386] In some embodiments, the second type of OOK symbol occupies all or part of the time domain resources of the cyclic prefix in the OFDM symbol.

[0387] In some embodiments, the first type of OOK symbol and the second type of OOK symbol occupy the same frequency domain resources.

[0388] In some embodiments, the elements or information carried by the second type of OOK symbol are the same as those carried by the last first type of OOK symbol in the corresponding OFDM symbol.

[0389] In some embodiments, the elements or information carried by the second type of OOK symbol are generated in the following manner:

[0390] Generate a time-domain expression of the first length based on the time-domain expression of the last OOK symbol of the first type in the corresponding OFDM symbol; or

[0391] The first-length time-domain expression is generated based on the time-domain expression of the corresponding OFDM symbol.

[0392] In some embodiments, the first length is less than or equal to the length of the cyclic prefix in the OFDM symbol.

[0393] For relevant explanations, please refer to the descriptions in the above technical solutions; they will not be repeated here.

[0394] It is understood that, in order to achieve the above-mentioned functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily recognize that, based on the algorithmic steps of the various examples described in conjunction with the embodiments of this disclosure, the embodiments of this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0395] This disclosure embodiment can divide the communication device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0396] For example, taking a communication device as the first node in the above method embodiment as an example, FIG9 is a structural diagram of a first node according to an embodiment of the present disclosure. The first node can execute the signal transmission method provided in the above method embodiment. As shown in FIG9, the first node 90 includes: a communication unit 901.

[0397] The communication unit 901 is used to transmit a first signal; the first signal is used to carry at least one first sequence; the first signal occupies at least one on / off keying OOK symbol or at least one orthogonal frequency division multiplexing OFDM symbol.

[0398] In some embodiments, the data information carried by at least one OOK symbol includes M elements; M is a positive integer, and the M elements satisfy at least one of the following:

[0399] Includes at least one element whose value is the first value;

[0400] The number of elements whose value is the first value is half of the M elements;

[0401] The number of elements whose value is the first value is within the first interval;

[0402] The number of elements that take the second value is half of the M elements;

[0403] The number of elements with the second value is within the second interval.

[0404] The last element of the M elements has a value of 0 or -1.

[0405] In some embodiments, the first sequence is determined by at least one of the following:

[0406] The corresponding second sequence;

[0407] The corresponding second sequence and at least one padding element;

[0408] The corresponding second sequence and at least one cyclic shift element; the cyclic shift element is an element in the second sequence.

[0409] In some embodiments, the feedback polynomials of the second sequences corresponding to at least one first sequence are the same.

[0410] In some embodiments, at least one first sequence is taken from a first sequence within one of a plurality of first sequence sets; the feedback polynomials of the second sequences corresponding to the plurality of first sequence sets are different or configured separately or independently.

[0411] In some embodiments, when the difference between the number of elements in the first sequence and the number of elements in the corresponding second sequence is less than or equal to a first threshold, the first sequence consists of the corresponding second sequence and at least one padding element; and / or,

[0412] If the difference between the number of elements in the first sequence and the number of elements in the corresponding second sequence is greater than or equal to a second threshold, the first sequence consists of the corresponding second sequence and at least one cyclically shifted element.

[0413] In some embodiments, when the difference between the number of OFDM symbols configured in the first signal configuration and the number of OFDM symbols carrying the first sequence is less than or equal to a third threshold, the first sequence consists of a corresponding second sequence and at least one padding element; and / or,

[0414] If the difference between the number of OFDM symbols configured in the first signal and the number of OFDM symbols carrying the first sequence is greater than or equal to a fourth threshold, the first sequence consists of a corresponding second sequence and at least one cyclic shift element.

[0415] In some embodiments, the first signal includes a preamble signal and / or a synchronization signal; the first sequence carried by the synchronization signal consists of at least one of the following or multiple repetitions of at least one of the following:

[0416] The first sequence carried by the preamble signal;

[0417] The preamble signal carries a first sequence and at least one padding element;

[0418] The preamble carries a first sequence and at least one cyclic shift element; the cyclic shift element is an element in the second sequence;

[0419] The preamble carries a first sequence and a third sequence; the third sequence is composed of some elements from the first sequence carried by the preamble.

[0420] In some embodiments, the length of the first sequence carried by the first signal is determined at least based on the number of OOK symbols in the OFDM symbols.

[0421] In some embodiments, when the number of OOK symbols in an OFDM symbol is adjusted from M1 to P*M1, the length of the first sequence carried by the first signal is adjusted from N. seq1 Adjust to P*N seq1 N seq1 If the value is greater than 0, then P is greater than 0.

[0422] In some embodiments, the types of OOK symbols include a first type and a second type; the time-domain position of the OOK symbol of the first type is located in the OFDM symbol, and the time-domain position of the OOK symbol of the second type is located in the cyclic prefix of the OFDM symbol.

[0423] In some embodiments, the second type of OOK symbol occupies all or part of the time domain resources of the cyclic prefix in the OFDM symbol.

[0424] In some embodiments, the first type of OOK symbol and the second type of OOK symbol occupy the same frequency domain resources.

[0425] In some embodiments, the elements or information carried by the second type of OOK symbol are the same as those carried by the last first type of OOK symbol in the corresponding OFDM symbol.

[0426] In some embodiments, the elements or information carried by the second type of OOK symbol are generated in the following manner:

[0427] Generate a time-domain expression of the first length based on the time-domain expression of the last OOK symbol of the first type in the corresponding OFDM symbol; or

[0428] The first-length time-domain expression is generated based on the time-domain expression of the corresponding OFDM symbol.

[0429] In some embodiments, the first length is less than or equal to the length of the cyclic prefix in the OFDM symbol.

[0430] For example, taking a communication device as the second node in the above method embodiment as an example, FIG10 is a structural diagram of a second node according to an embodiment of the present disclosure. The second node can execute the signal transmission method provided in the above method embodiment. As shown in FIG10, the second node 100 includes: a communication unit 1001.

[0431] The communication unit 1001 is used to receive a first signal; the first signal is used to carry at least one first sequence; the first signal occupies at least one on / off keying OOK symbol or at least one orthogonal frequency division multiplexing OFDM symbol.

[0432] In some embodiments, a processing unit 1002 is further included, which is used to decode the signals transmitted on the cyclic prefix and data portion of the OFDM symbol in the first signal to obtain data information.

[0433] In some embodiments, the data information carried by at least one OOK symbol includes M elements; M is a positive integer, and the M elements satisfy at least one of the following:

[0434] Includes at least one element whose value is the first value;

[0435] The number of elements whose value is the first value is half of the M elements;

[0436] The number of elements whose value is the first value is within the first interval;

[0437] The number of elements that take the second value is half of the M elements;

[0438] The number of elements with the second value is within the second interval.

[0439] The last element of the M elements has a value of 0 or -1.

[0440] In some embodiments, the first sequence is determined by at least one of the following:

[0441] The corresponding second sequence;

[0442] The corresponding second sequence and at least one padding element;

[0443] The corresponding second sequence and at least one cyclic shift element; the cyclic shift element is an element in the second sequence.

[0444] In some embodiments, the feedback polynomials of the second sequences corresponding to at least one first sequence are the same.

[0445] In some embodiments, at least one first sequence is taken from a first sequence within one of a plurality of first sequence sets; the feedback polynomials of the second sequences corresponding to the plurality of first sequence sets are different or configured separately or independently.

[0446] In some embodiments, when the difference between the number of elements in the first sequence and the number of elements in the corresponding second sequence is less than or equal to a first threshold, the first sequence consists of the corresponding second sequence and at least one padding element; and / or,

[0447] If the difference between the number of elements in the first sequence and the number of elements in the corresponding second sequence is greater than or equal to a second threshold, the first sequence consists of the corresponding second sequence and at least one cyclically shifted element.

[0448] In some embodiments, when the difference between the number of OFDM symbols configured in the first signal configuration and the number of OFDM symbols carrying the first sequence is less than or equal to a third threshold, the first sequence consists of a corresponding second sequence and at least one padding element; and / or,

[0449] If the difference between the number of OFDM symbols configured in the first signal and the number of OFDM symbols carrying the first sequence is greater than or equal to a fourth threshold, the first sequence consists of a corresponding second sequence and at least one cyclic shift element.

[0450] In some embodiments, the first signal includes a preamble signal and / or a synchronization signal; the first sequence carried by the synchronization signal consists of at least one of the following or multiple repetitions of at least one of the following:

[0451] The first sequence carried by the preamble signal;

[0452] The preamble signal carries a first sequence and at least one padding element;

[0453] The preamble carries a first sequence and at least one cyclic shift element; the cyclic shift element is an element in the second sequence;

[0454] The preamble carries a first sequence and a third sequence; the third sequence is composed of some elements from the first sequence carried by the preamble.

[0455] In some embodiments, the length of the first sequence carried by the first signal is determined at least based on the number of OOK symbols in the OFDM symbols.

[0456] In some embodiments, when the number of OOK symbols in an OFDM symbol is adjusted from M1 to P*M1, the length of the first sequence carried by the first signal is adjusted from N. seq1 Adjust to P*N seq1 N seq1If the value is greater than 0, then P is greater than 0.

[0457] In some embodiments, the types of OOK symbols include a first type and a second type; the time-domain position of the OOK symbol of the first type is located in the OFDM symbol, and the time-domain position of the OOK symbol of the second type is located in the cyclic prefix of the OFDM symbol.

[0458] In some embodiments, the second type of OOK symbol occupies all or part of the time domain resources of the cyclic prefix in the OFDM symbol.

[0459] In some embodiments, the first type of OOK symbol and the second type of OOK symbol occupy the same frequency domain resources.

[0460] In some embodiments, the elements or information carried by the second type of OOK symbol are the same as those carried by the last first type of OOK symbol in the corresponding OFDM symbol.

[0461] In some embodiments, the elements or information carried by the second type of OOK symbol are generated in the following manner:

[0462] Generate a time-domain expression of the first length based on the time-domain expression of the last OOK symbol of the first type in the corresponding OFDM symbol; or

[0463] The first-length time-domain expression is generated based on the time-domain expression of the corresponding OFDM symbol.

[0464] In some embodiments, the first length is less than or equal to the length of the cyclic prefix in the OFDM symbol.

[0465] In the case of implementing the functions of the integrated modules described above in hardware, this disclosure provides another structure of the communication device involved in the above embodiments. As shown in FIG11, the communication device 110 includes: a processor 1102 and a bus 1104. Exemplarily, the communication device 110 may also include a memory 1101; exemplarily, the communication device 110 may also include a communication interface 1103.

[0466] Processor 1102 can implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 1102 can be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. Processor 1102 can also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0467] Communication interface 1103 is used to connect with other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0468] The memory 1101 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0469] In one implementation, the memory 1101 can exist independently of the processor 1102. The memory 1101 can be connected to the processor 1102 via a bus 1104 and is used to store instructions or program code. When the processor 1102 calls and executes the instructions or program code stored in the memory 1101, it can implement the method described in any embodiment of this disclosure.

[0470] In another implementation, the memory 1101 can also be integrated with the processor 1102.

[0471] Bus 1104 can be an extended industry standard architecture (EISA) bus, etc. Bus 1104 can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in Figure 11, but this does not mean that there is only one bus or one type of bus.

[0472] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform the methods described in any of the above embodiments.

[0473] Exemplary examples show that the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices for storing information and / or other machine-readable storage media. The term "machine-readable storage media" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0474] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the methods described in any of the above embodiments.

[0475] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A signal transmission method, wherein, The method includes: Send a first signal; the first signal is used to carry at least one first sequence; the first signal occupies at least one on / off keyed OOK symbol or at least one orthogonal frequency division multiplexing (OFDM) symbol.

2. The method according to claim 1, wherein, The data information carried by the at least one OOK symbol includes M elements; M is a positive integer, and the M elements satisfy at least one of the following: Includes at least one element whose value is the first value; The number of elements that take the first value is half of the M elements; The number of elements whose value is the first value is within the first interval; The number of elements that take the second value is half of the M elements; The number of elements that take the second value is within the second interval; The last element among the M elements has a value of 0 or -1.

3. The method according to claim 1, wherein, The first sequence is determined by at least one of the following: The corresponding second sequence; The corresponding second sequence and at least one padding element; The corresponding second sequence and at least one cyclic shift element; the cyclic shift element is an element in the second sequence.

4. The method according to claim 3, wherein, The feedback polynomials of the second sequences corresponding to at least one first sequence are the same.

5. The method according to claim 3, wherein, The at least one first sequence is taken from a first sequence in one of a plurality of first sequence sets; the feedback polynomials of the second sequences corresponding to the plurality of first sequence sets are different or configured separately or independently.

6. The method according to claim 3, wherein, If the difference between the number of elements in the first sequence and the number of elements in the corresponding second sequence is less than or equal to a first threshold, the first sequence consists of the corresponding second sequence and the at least one filler element; and / or, If the difference between the number of elements in the first sequence and the number of elements in the corresponding second sequence is greater than or equal to a second threshold, the first sequence consists of the corresponding second sequence and the at least one cyclically shifted element.

7. The method according to claim 3, wherein, If the difference between the number of OFDM symbols configured in the first signal and the number of OFDM symbols carrying the first sequence is less than or equal to a third threshold, the first sequence consists of the corresponding second sequence and the at least one padding element; and / or, If the difference between the number of OFDM symbols configured in the first signal and the number of OFDM symbols carrying the first sequence is greater than or equal to a fourth threshold, the first sequence consists of the corresponding second sequence and the at least one cyclic shift element.

8. The method according to claim 1, wherein, The first signal includes a preamble signal and / or a synchronization signal; the first sequence carried by the synchronization signal consists of at least one of the following or multiple repetitions of at least one of the following: The preamble signal carries a first sequence; The preamble signal carries a first sequence and at least one padding element; The preamble signal carries a first sequence and at least one cyclic shift element; the cyclic shift element is an element in the second sequence; The preamble carries a first sequence and a third sequence; the third sequence is composed of some elements from the first sequence carried by the preamble.

9. The method according to claim 1, wherein, The length of the first sequence carried by the first signal is determined based at least on the number of OOK symbols in the OFDM symbols.

10. The method according to claim 9, wherein, The length of the first sequence carried by the first signal is determined at least based on the number of OOK symbols in the OFDM symbols, including: When the number of OOK symbols in the OFDM symbol is adjusted from M1 to P*M1, the length of the first sequence carried by the first signal is adjusted from N. seq1 Adjust to P*N seq1 N seq1 If the value is greater than 0, then P is greater than 0.

11. The method according to claim 1, wherein, The OOK symbols include a first type and a second type; wherein the time-domain position of the OOK symbol of the first type is located in the OFDM symbol, and the time-domain position of the OOK symbol of the second type is located in the cyclic prefix of the OFDM symbol.

12. The method according to claim 11, wherein, The second type of OOK symbol occupies all or part of the time-domain resources of the cyclic prefix in the OFDM symbol.

13. The method according to claim 11, wherein, The first type of OOK symbol and the second type of OOK symbol occupy the same frequency domain resources.

14. The method according to claim 11, wherein, The elements or information carried by the second type of OOK symbol are the same as those carried by the last first type of OOK symbol in the corresponding OFDM symbol.

15. The method according to claim 11, wherein, The elements or information carried by the second type of OOK symbol are generated in the following way: Generate a time-domain expression of the first length based on the time-domain expression of the last OOK symbol of the first type in the corresponding OFDM symbol; or The time-domain expression of the first length is generated based on the time-domain expression of the corresponding OFDM symbol.

16. The method according to claim 15, wherein, The first length is less than or equal to the length of the cyclic prefix in the OFDM symbol.

17. A signal transmission method, wherein, include: Receive the first signal; The first signal is used to carry at least one first sequence; The first signal occupies at least one on / off keying OOK symbol or at least one orthogonal frequency division multiplexing (OFDM) symbol.

18. The method according to claim 17, wherein, The method further includes: The data information is obtained by decoding the signals transmitted on the cyclic prefix and data portion of the OFDM symbol in the first signal.

19. The method according to claim 17, wherein, The data information carried by the at least one OOK symbol includes M elements; M is a positive integer, and the M elements satisfy at least one of the following: Includes at least one element whose value is the first value; The number of elements that take the first value is half of the M elements; The number of elements whose value is the first value is within the first interval; The number of elements that take the second value is half of the M elements; The number of elements that take the second value is within the second interval; The last element among the M elements has a value of 0 or -1.

20. The method of claim 17, wherein, The first sequence is determined by at least one of the following: The corresponding second sequence; The corresponding second sequence and at least one padding element; The corresponding second sequence and at least one cyclic shift element; the cyclic shift element is an element in the second sequence.

21. The method according to claim 20, wherein, The feedback polynomials of the second sequences corresponding to at least one first sequence are the same.

22. The method according to claim 20, wherein, The at least one first sequence is taken from a first sequence in one of a plurality of first sequence sets; the feedback polynomials of the second sequences corresponding to the plurality of first sequence sets are different or configured separately or independently.

23. The method of claim 20, wherein, If the difference between the number of elements in the first sequence and the number of elements in the corresponding second sequence is less than or equal to a first threshold, the first sequence consists of the corresponding second sequence and the at least one filler element; and / or, If the difference between the number of elements in the first sequence and the number of elements in the corresponding second sequence is greater than or equal to a second threshold, the first sequence consists of the corresponding second sequence and the at least one cyclically shifted element.

24. The method of claim 20, wherein, If the difference between the number of OFDM symbols configured in the first signal and the number of OFDM symbols carrying the first sequence is less than or equal to a third threshold, the first sequence consists of the corresponding second sequence and the at least one padding element; and / or, If the difference between the number of OFDM symbols configured in the first signal and the number of OFDM symbols carrying the first sequence is greater than or equal to a fourth threshold, the first sequence consists of the corresponding second sequence and the at least one cyclic shift element.

25. The method according to claim 17, wherein, The first signal includes a preamble signal and / or a synchronization signal; the first sequence carried by the synchronization signal consists of at least one of the following or multiple repetitions of at least one of the following: The preamble signal carries a first sequence; The preamble signal carries a first sequence and at least one padding element; The preamble signal carries a first sequence and at least one cyclic shift element; the cyclic shift element is an element in the second sequence; The preamble carries a first sequence and a third sequence; the third sequence is composed of some elements from the first sequence carried by the preamble.

26. The method according to claim 17, wherein, The length of the first sequence carried by the first signal is determined based at least on the number of OOK symbols in the OFDM symbols.

27. The method according to claim 26, wherein, The length of the first sequence carried by the first signal is determined at least based on the number of OOK symbols in the OFDM symbols, including: When the number of OOK symbols in the OFDM symbol is adjusted from M1 to P*M1, the length of the first sequence carried by the first signal is adjusted from N. seq1 Adjust to P*N seq1 N seq1 If the value is greater than 0, then P is greater than 0.

28. The method according to claim 17, wherein, The OOK symbols include a first type and a second type; wherein the time-domain position of the OOK symbol of the first type is located in the OFDM symbol, and the time-domain position of the OOK symbol of the second type is located in the cyclic prefix of the OFDM symbol.

29. The method according to claim 28, wherein, The second type of OOK symbol occupies all or part of the time-domain resources of the cyclic prefix in the OFDM symbol.

30. The method according to claim 28, wherein, The first type of OOK symbol and the second type of OOK symbol occupy the same frequency domain resources.

31. The method according to claim 28, wherein, The elements or information carried by the second type of OOK symbol are the same as those carried by the last first type of OOK symbol in the corresponding OFDM symbol.

32. The method according to claim 28, wherein, The elements or information carried by the second type of OOK symbol are generated in the following way: Generate a time-domain expression of the first length based on the time-domain expression of the last OOK symbol of the first type in the corresponding OFDM symbol; or The time-domain expression of the first length is generated based on the time-domain expression of the corresponding OFDM symbol.

33. The method according to claim 32, wherein, The first length is less than or equal to the length of the cyclic prefix in the OFDM symbol.

34. A communication device, wherein, The communication device includes: a memory and a processor; the memory and the processor are coupled; the memory is used to store instructions executable by the processor; when the processor executes the instructions, it performs the method according to any one of claims 1 to 16, or performs the method according to any one of claims 17 to 33.

35. A computer-readable storage medium, wherein, The computer-readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method according to any one of claims 1 to 16, or the method according to any one of claims 17 to 33.

36. A computer program product, wherein, The computer program product includes computer program instructions that, when executed by a processor, implement the method according to any one of claims 1 to 16, or perform the method according to any one of claims 17 to 33.

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