Method, apparatus, and readable storage medium for transmitting or receiving a signal

Abstract

The present disclosure is applied to the technical field of wireless communication, and provides a method, an apparatus and a readable storage medium for transmitting or receiving a signal. A method for transmitting a signal, performed by a network device, includes transmitting a signal to a user device, the signal including a plurality of bits, and a plurality of M bits sequentially arranged in the plurality of bits, each M bit corresponding to one time domain signal according to a mapping relationship, the mapping relationship being: M - 1 different non-all-zero M bits M - one-to-one correspondence with two different amplitude orthogonal frequency division multiplexing (OFDM) time domain signals, or M - 1 different non-all-zero M bits M - Meet one-to-one correspondence with OFDM time domain signals having one different time domain signal energy, and one all-zero M bits correspond to one space-time domain signal, where M is a positive integer.

Description

[Technical Field]

[0001] The present disclosure relates to the technical field of wireless communication, and in particular to a method, apparatus, and readable storage medium for transmitting or receiving signals. [Background technology]

[0002] To save power consumption in a user device, a main transceiver and a low-power receiver are configured within the user device. After putting the main transceiver into a sleep state, the user device has the low-power receiver monitor a low-power wake-up signal (LP WUS). After monitoring the LP WUS, the user device wakes up the main transceiver and can receive and transmit data via the main transceiver. The power consumption of the low-power receiver is much smaller than that of the main transceiver, thereby achieving power savings. Summary of the Invention [Problem to be solved by the invention]

[0003] The present disclosure discloses a method, an apparatus, and a readable storage medium for transmitting or receiving a signal. [Means for solving the problem]

[0004] In a first aspect, there is provided a method of transmitting a signal performed by a network device, said method comprising: transmitting a signal to a user device; The signal includes a plurality of bits, and among a plurality of M bits sequentially arranged in the plurality of bits, each M bit corresponds to one time domain signal according to a mapping relationship; The mapping relationship is: M - 1 different non-all-zero M bits M - one-to-one correspondence with two different amplitude orthogonal frequency division multiplexing (OFDM) time domain signals, or M- 1 different non-all-zero M bits M -Meeting one-to-one correspondence with OFDM time domain signals having different time domain signal energies; One all-zero M bits corresponds to one space-time domain signal, where M is a positive integer.

[0005] In some possible embodiments, the amplitude is the maximum amplitude or the average amplitude, and the energy is the accumulated energy in the frequency domain.

[0006] In some possible embodiments, the frequency domain of the OFDM time domain signal includes N subcarriers, the frequency domain includes a low frequency guard band and a high frequency guard band, the low frequency guard band includes X subcarriers, the high frequency guard band includes Y subcarriers, the low frequency guard band and the high frequency guard band are not used to transmit information, N is an integer greater than 1, X is a positive integer, and Y is a positive integer.

[0007] In some possible embodiments, the value of X is the same as the value of Y, or the value of X differs from the value of Y by one.

[0008] In some possible embodiments, the frequency region includes a center subcarrier, the center subcarrier not being used to transmit information.

[0009] In some possible embodiments, the N subcarriers include K subcarriers, and the K subcarriers are used to transmit at least one complex-valued symbol, and the at least one complex-valued symbol is used to determine a maximum amplitude or an average amplitude of the OFDM time-domain signal, or is used to determine an accumulated energy in the frequency domain of the OFDM time-domain signal.

[0010] In some possible embodiments, the complex-valued symbols are Binary Phase Shift Keying (BPSK) modulation symbols, Quadrature Phase Shift Keying (QPSK) modulation symbols, and Quadrature Amplitude Modulation (QAM) modulation symbols, It is one of the following.

[0011] In some possible embodiments, sending the configuration information to the user device; The configuration information is used to set the value of the complex-valued symbol.

[0012] In some possible embodiments, the OFDM time domain signal is a signal obtained by modulating the complex-valued symbols corresponding to the K subcarriers, the modulation process including an Inverse Discrete Fourier Transform (IDFT).

[0013] In some possible embodiments, the modulation process comprises: The method further includes at least one of adding a cyclic prefix (CP) and symbol randomization.

[0014] In some possible embodiments, the method further comprises repeatedly transmitting the M bits over multiple time domain symbols.

[0015] In some possible embodiments, the signal is a low power wake-up signal (LP WUS).

[0016] In a second aspect, there is provided a method of receiving a signal performed by a user device, said method comprising: receiving a signal transmitted by a network device; The signal includes a plurality of bits, and among a plurality of M bits sequentially arranged in the plurality of bits, each M bit corresponds to one time domain signal according to a mapping relationship; The mapping relationship is: M - 1 different non-all-zero M bits M- one-to-one correspondence with two different amplitude orthogonal frequency division multiplexing (OFDM) time domain signals, or M - 1 different non-all-zero M bits M -Meeting one-to-one correspondence with OFDM time domain signals having different time domain signal energies; One all-zero M bits corresponds to one space-time domain signal, where M is a positive integer.

[0017] In some possible embodiments, the amplitude is the maximum amplitude or the average amplitude, and the energy is the accumulated energy in the frequency domain.

[0018] In some possible embodiments, the frequency domain of the OFDM time domain signal includes N subcarriers, the frequency domain includes a low frequency guard band and a high frequency guard band, the low frequency guard band includes X subcarriers, the high frequency guard band includes Y subcarriers, the low frequency guard band and the high frequency guard band are not used to transmit information, N is an integer greater than 1, X is a positive integer, and Y is a positive integer.

[0019] In some possible embodiments, the value of X is the same as the value of Y, or the value of X differs from the value of Y by one.

[0020] In some possible embodiments, the frequency region includes a center subcarrier, the center subcarrier not being used to transmit information.

[0021] In some possible embodiments, the N subcarriers include K subcarriers, and the K subcarriers are used to transmit at least one complex-valued symbol, and the at least one complex-valued symbol is used to determine a maximum amplitude or an average amplitude of the OFDM time-domain signal, or is used to determine an accumulated energy in the frequency domain of the OFDM time-domain signal.

[0022] In some possible embodiments, the complex-valued symbols are Binary Phase Shift Keying (BPSK) modulation symbols, Quadrature Phase Shift Keying (QPSK) modulation symbols, and Quadrature Amplitude Modulation (QAM) modulation symbols, It is one of the following.

[0023] In some possible embodiments, the method further comprises receiving configuration information transmitted by the network device; The configuration information is used to set the value of the complex-valued symbol.

[0024] In some possible embodiments, the OFDM time domain signal is a signal obtained by modulating the complex-valued symbols corresponding to the K subcarriers, the modulation process including an Inverse Discrete Fourier Transform (IDFT).

[0025] In some possible embodiments, the modulation process comprises: The method further includes at least one of adding a cyclic prefix (CP) and symbol randomization.

[0026] In some possible embodiments, the method further comprises repeatedly receiving the M bits over multiple time domain symbols.

[0027] In some possible embodiments, the signal is a low power wake-up signal (LP WUS).

[0028] In some possible embodiments, the method comprises: performing amplitude detection on the signal and determining the sequentially arranged plurality of M bits contained in the signal based on an amplitude threshold; or The method further includes performing energy detection on the signal and determining the sequentially arranged plurality of M bits contained in the signal based on an energy threshold.

[0029] In a third aspect, there is provided an apparatus for transmitting a signal, said apparatus comprising: a transceiver module configured to transmit a signal to a user device; The signal includes a plurality of bits, and among a plurality of M bits sequentially arranged in the plurality of bits, each M bit corresponds to one time domain signal according to a mapping relationship; The mapping relationship is: M - 1 different non-all-zero M bits M - one-to-one correspondence with two different amplitude orthogonal frequency division multiplexing (OFDM) time domain signals, or M - 1 different non-all-zero M bits M -Meeting one-to-one correspondence with OFDM time domain signals having different time domain signal energies; One all-zero M bits corresponds to one space-time domain signal, where M is a positive integer.

[0030] In some possible embodiments, the amplitude is the maximum amplitude or the average amplitude, and the energy is the accumulated energy in the frequency domain.

[0031] In a fourth aspect, there is provided an apparatus for receiving a signal, said apparatus comprising: a transceiver module configured to receive signals transmitted by the network device; The signal includes a plurality of bits, and among a plurality of M bits sequentially arranged in the plurality of bits, each M bit corresponds to one time domain signal according to a mapping relationship; The mapping relationship is: M - 1 different non-all-zero M bits M - one-to-one correspondence with two different amplitude orthogonal frequency division multiplexing (OFDM) time domain signals, or M - 1 different non-all-zero M bits M -Meeting one-to-one correspondence with OFDM time domain signals having different time domain signal energies; One all-zero M bits corresponds to one space-time domain signal, where M is a positive integer.

[0032] In some possible embodiments, the amplitude is the maximum amplitude or the average amplitude, and the energy is the accumulated energy in the frequency domain.

[0033] In a fifth aspect, there is provided a communications device including a processor and a memory, wherein: the memory is used to store a computer program; The processor executes the computer program to implement the first aspect or any possible design of the first aspect.

[0034] In a sixth aspect, there is provided a communications device including a processor and a memory, wherein: the memory is used to store a computer program; The processor executes the computer program to implement the second aspect or any possible design of the second aspect.

[0035] In a seventh aspect, there is provided a computer readable storage medium having stored thereon instructions which, when called and executed on a computer, cause the computer to perform the first aspect above or any possible design of the first aspect.

[0036] In an eighth aspect, there is provided a computer readable storage medium having stored thereon instructions which, when called and executed on a computer, cause the computer to perform the second aspect above or any possible design of the second aspect.

[0037] In a ninth aspect, there is provided a communication system, said communication system including a user device for implementing the first aspect or any of the possible designs of the first aspect described above, and a network device for implementing the second aspect or any of the possible designs of the second aspect described above.

[0038] In the present disclosure, in consideration of the low power consumption and simple structure of a receiver for receiving the signal, M bits are used as a basic unit to accommodate the envelope detection capability of the receiver. Thus, the signal includes a plurality of sequentially arranged basic units, and M bits of each basic unit correspond to one time-domain signal according to a mapping relationship. Thus, each non-all-zero M bits corresponds to one OFDM time-domain signal, and the signal is generated using an OFDM signal generation method, effectively utilizing the envelope detection capability of the receiver and providing a signal with an appropriate format that matches the capability of the receiver. [Brief explanation of the drawings]

[0039] The drawings described herein are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of the present disclosure. The schematic examples and descriptions of the embodiments of the present disclosure are used to explain the embodiments of the present disclosure and do not constitute undue limitations on the embodiments of the present disclosure.

[0040] The drawings herein are incorporated into the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, illustrate principles used to explain the present disclosure. [Figure 1] 1 is a schematic diagram of the architecture of a wireless communication system provided by an embodiment of the present disclosure. [Figure 2] 1 is a schematic diagram of the interaction of transmitting and receiving signals provided by an embodiment of the present disclosure. [Figure 3] 1 is a flowchart of a method for transmitting a signal provided by an embodiment of the present disclosure. [Figure 4] 1 is a flowchart of a method for receiving a signal provided by an embodiment of the present disclosure. [Figure 5] FIG. 1 is a block diagram of a device for receiving a signal provided by an embodiment of the present disclosure. [Figure 6] FIG. 10 is a block diagram of another signal receiving device provided by an embodiment of the present disclosure. [Figure 7] FIG. 1 is a block diagram of a device for transmitting a signal provided by an embodiment of the present disclosure. [Figure 8] FIG. 10 is a block diagram of another signal transmitting device provided by an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0041] Hereinafter, the embodiments of the present disclosure will be further described in conjunction with the drawings and specific embodiments.

[0042] Illustrative examples are described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, like numbers in different drawings refer to the same or similar elements unless otherwise indicated. The embodiments described in the following illustrative examples do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the present invention as detailed in the appended claims.

[0043] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. Also, as used herein, the term "and / or" is understood to refer to and include all possible combinations of at least one of the associated listed items.

[0044] In the embodiments of the present disclosure, terms such as first, second, and third may be used to describe various pieces of information, but it is understood that the information should not be limited to these terms. These terms are used only to distinguish between the same types of information. For example, the first instruction information may be referred to as the second instruction information, and similarly, the second instruction information may be referred to as the first instruction information, without departing from the scope of the embodiments of the present disclosure. Depending on the context, the words "if" and "if" used herein may be interpreted as "when," "when," or "depending on."

[0045]

[0013] The embodiments of the present disclosure are described in detail below. Examples of the embodiments are illustrated in the accompanying drawings. The same or similar reference numerals represent the same or similar elements throughout the drawings. The embodiments described below with reference to the accompanying drawings are illustrative and are intended to explain the present disclosure and should not be understood as limiting the present disclosure.

[0046] As shown in FIG. 1, the method provided by the embodiment of the present disclosure can be applied to a wireless communication system 100 including a user device 101 and a network device 102, and the number of devices included is not limited.

[0047] It is understood that the above wireless communication system 100 can be applied to both low frequency and high frequency scenarios, including, but not limited to, a Long Term Evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a worldwide interoperability for microwave access (WiMAX) communication system, a cloud radio access network (CRAN) system, a future 5th-generation (5G) system, a new radio (NR) communication system, or a future evolved public land mobile network (PLMN) system.

[0048] The user device 101 shown above may be a terminal, access user device, user device unit, user device station, mobile station (MS), remote station, remote user device, mobile terminal, wireless communication device, user device agent, etc. The user device 101 may have wireless transmission and reception capabilities to communicate (e.g., wirelessly communicate) with one or more network devices of one or more communication systems and receive network services provided by the network devices, including but not limited to the illustrated network device 102.

[0049] Here, the user device 101 may be a mobile phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a user device in a future 5G network, or a user device in a future evolving PLMN network, etc.

[0050] For example, the network device 102 may be an access network device (or access network station). Here, the access network device refers to a device that provides a network access function, such as a radio access network (RAN) base station. Specifically, the access network device may include a base station (BS), a base station, and a radio resource management device for controlling the base station. The network device may also include a relay station (relay device), an access point, a base station in a future 5G network, a base station in a future evolved PLMN network, or an NR base station. The network device 102 may also be a wearable device or an in-vehicle device. The network device 102 may also be a communication chip having a communication module.

[0051] The low-power receiver in the UE has low energy consumption and a simple structure, so the low-power receiver can analyze the LP WUS by envelope detection, which is amplitude detection or energy detection, and identifies the information carried by the signal based on different amplitudes or different energies of the received signal. Therefore, it is conceivable to generate the LP WUS using an Orthogonal Frequency Division Multiplexing (OFDM) signal generation method.

[0052] An embodiment of the present disclosure provides a method for transmitting and receiving signals, and Fig. 2 is a flowchart of transmitting and receiving signals shown according to an exemplary embodiment. As shown in Fig. 2, the method includes S201 to S202.

[0053] In S201, a network device sends a signal to a UE, the signal including a plurality of bits, and a plurality of M bits sequentially arranged in the plurality of bits, each of the M bits corresponding to a time domain signal according to a mapping relationship.

[0054] In some possible embodiments, the signal includes a plurality of groups arranged sequentially, each group including M bits, and the M bits in each group correspond to one time domain signal according to a mapping relationship.

[0055] In some possible embodiments, the mapping relationship is: M Regarding different M bits, 2 M There are two different M bits: M -Contains one non-all-zero M-bit and one all-zero M-bit.

[0056] The mapping relationship is: M - 1 different non-all-zero M bits M - one-to-one correspondence with two different amplitude orthogonal frequency division multiplexing (OFDM) time domain signals, or M - 1 different non-all-zero M bits M -Meeting one-to-one correspondence with OFDM time domain signals having different time domain signal energies; One all-zero M bits corresponds to one space-time domain signal, where M is a positive integer.

[0057] In some possible embodiments, the amplitude is the maximum amplitude or the average amplitude, and the energy is the accumulated energy in the frequency domain.

[0058] In some possible embodiments, the frequency domain of said OFDM time domain signal comprises N subcarriers.

[0059] To prevent interference between adjacent frequency bands, the frequency region includes a low-frequency guard band and a high-frequency guard band, the low-frequency guard band and the high-frequency guard band are not used to transmit information, the low-frequency guard band includes X subcarriers, the high-frequency guard band includes Y subcarriers, X is an integer greater than 0, and Y is an integer greater than 0.

[0060] Since one resource block (RB) contains 12 subcarriers, for a time domain signal occupying an integer number of RBs, if the signal occupies an odd number of subcarriers, the number of subcarriers occupied by its high guard band and low guard band differs by 1, and therefore the value of X differs from the value of Y by 1. If the signal occupies an even number of subcarriers, the high guard band and low guard band occupy the same number of subcarriers, and therefore the value of X is the same as the value of Y.

[0061] The UE can use a zero intermediate frequency receiver (ZFR) that can directly convert the RF signal back to the original transmission signal without passing through an intermediate frequency. To reduce reception interference of the ZFR, the frequency range includes at least one center subcarrier that is not used to transmit information.

[0062] If the signal occupies an even number of subcarriers, the central subcarrier may include an even number of central subcarriers, for example, two central subcarriers. If the signal occupies an odd number of subcarriers, the central subcarrier may include an odd number of central subcarriers, for example, one central subcarrier.

[0063] In some possible embodiments, the frequency domain of the OFDM time-domain signal includes N subcarriers, the N subcarriers include K subcarriers, and the K subcarriers are used to transmit at least one complex-valued symbol. When a network device transmits an OFDM time-domain signal with the same scaling factor, different complex-valued symbols correspond to different OFDM time-domain signals, so the at least one complex-valued symbol can be used to determine the maximum amplitude or average amplitude of the OFDM time-domain signal, or to determine the accumulated energy in the frequency domain of the OFDM time-domain signal. The complex-valued symbol may be a zero-valued symbol or a non-zero-valued symbol.

[0064] In one example, the K subcarriers are used to transmit a group of symbols, the group of symbols including at least one complex-valued symbol, and the complex-valued symbols in the group of symbols may include two or more identical complex-valued symbols.

[0065] Each subcarrier on the K subcarriers can carry a complex-valued symbol of zero or non-zero value.

[0066] Optionally, the complex-valued symbols are symbols defined by a protocol.

[0067] Optionally, the network device transmits configuration information to the user device for configuring the value of said complex-valued symbol.

[0068] The complex-valued symbols are Binary Phase Shift Keying (BPSK) modulation symbols, Quadrature Phase Shift Keying (QPSK) modulation symbols, and Quadrature Amplitude Modulation (QAM) modulation symbols, It is one of the following.

[0069] In some possible embodiments, the OFDM time domain signal is a signal obtained by modulating the at least one complex-valued symbol corresponding to the K subcarriers, and the modulation process includes an Inverse Discrete Fourier Transform (IDFT).

[0070] Optionally, the modulation process also includes adding a cyclic prefix (CP).

[0071] For example, the OFDM time-domain signal is a time-domain signal after IDFT is performed on the at least one complex-valued symbol corresponding to the K subcarriers and a CP is added.

[0072] Optionally, the modulation process also includes a symbol randomization process.

[0073] For example, the OFDM time domain signal is a time domain signal after IDFT is performed on the at least one complex-valued symbol corresponding to the K subcarriers and symbol randomization processing is performed.

[0074] Optionally, the modulation process further includes adding a CP and performing a symbol randomization process.

[0075] For example, the OFDM time domain signal is a time domain signal after IDFT is performed on the at least one complex-valued symbol corresponding to the K subcarriers, a CP is added, and symbol randomization processing is performed.

[0076] In some possible embodiments, the signal includes a plurality of sequentially arranged groups, each group including M bits, and the M bits of each group are transmitted in one OFDM time domain symbol. To improve coverage, the same group may be repeatedly transmitted on multiple OFDM time domain symbols, i.e., any M bits of the plurality of M bits may be repeatedly transmitted on multiple OFDM time domain symbols.

[0077] At S202, the UE analyzes the signal.

[0078] In some possible embodiments, the UE analyzes each of the M bits contained in the signal.

[0079] In some possible embodiments, the UE performs amplitude detection on the signal and determines the sequentially ordered number of M bits contained in the signal based on an amplitude threshold, where the amplitude threshold is one or more.

[0080] Alternatively, the UE performs energy detection on the signal and determines the sequentially arranged M bits contained in the signal based on an energy threshold, where the energy threshold is one or more.

[0081] In some possible embodiments, the UE determines the amplitude or energy threshold based on a synchronization signal or a training sequence applied to a receiver used to receive the signal transmitted by the network device.

[0082] In one example, if the receiver is a LP WUS receiver, the UE determines the amplitude threshold or the energy threshold based on a synchronization signal or a training sequence applied to the LP WUS receiver.

[0083] In some possible embodiments, the signals of S201 and S202 are LP WUS signals.

[0084] In the embodiment of the present disclosure, in consideration of the low power consumption and simple structure of a receiver receiving the signal, M bits are used as a basic unit to accommodate the envelope detection capability of the receiver, whereby the signal includes a plurality of sequentially arranged basic units, and M bits of each basic unit correspond to one time-domain signal according to a mapping relationship, whereby each non-all-zero M bits corresponds to one OFDM time-domain signal, thereby generating the signal using an OFDM signal generation method, effectively utilizing the envelope detection capability of the receiver, and providing a signal of an appropriate format that matches the capability of the receiver.

[0085] Next, the generation method of the LP WUS signal will be explained with some examples: Example 1: The LP WUS signal contains a total of 30 bits. The value of M is 2. Every 2 bits are transmitted on one OFDM time-domain symbol, so the LP WUS signal occupies a total of 15 time-domain symbols. Example 2: The LP WUS signal contains a total of 30 bits. The value of M is 1. Each bit is transmitted on one OFDM time-domain symbol, and the LP WUS signal occupies a total of 30 time-domain symbols. Example 3: The LP WUS signal contains a total of 30 bits, where M is 2. Every 2 bits are repeatedly transmitted over two OFDM time-domain symbols, so the LP WUS signal occupies a total of 30 time-domain symbols. Example 4: The LP WUS signal contains a total of 30 bits, where M is 1. Each bit is repeatedly transmitted over two OFDM time-domain symbols, so the LP WUS signal occupies a total of 60 time-domain symbols. In the above example, the values ​​of the other parameters may be N=24, L1=6, L2=7, and K=11.

[0086] An embodiment of the present disclosure provides a method for transmitting a signal performed by a network device, and Figure 3 is a flowchart of transmitting a signal shown according to an exemplary embodiment. As shown in Figure 3, the method includes: S301.

[0087] In step S301, a signal is sent to a UE, the signal including a plurality of bits, and a plurality of M bits sequentially arranged in the plurality of bits, each of the M bits corresponding to a time domain signal according to a mapping relationship.

[0088] The content of S301 is similar to that of S201, so please refer to S201, and the description will not be repeated here.

[0089] An embodiment of the present disclosure provides a method for receiving signals performed by a UE, and Figure 4 is a flowchart of receiving signals shown according to an exemplary embodiment. As shown in Figure 4, the method includes S401 to S4202.

[0090] In step S401, a signal transmitted by a network device is received, the signal including a plurality of bits, and a plurality of M bits sequentially arranged in the plurality of bits, each of the M bits corresponding to a time domain signal according to a mapping relationship.

[0091] The details regarding the signals in S401 are similar to those in S201, so please refer to S201, and the description will not be repeated here.

[0092] In S402, the signal is analyzed.

[0093] The content of S402 is similar to that of S202, so please refer to S202, and the description will not be repeated here.

[0094] Based on a similar concept to the above method embodiment, an embodiment of the present disclosure further provides a communication device that includes the functions of the network device in the above method embodiment and executes the steps performed by the network device provided by the above embodiment. This function can be implemented by hardware, software, or by hardware executing corresponding software. This hardware or software includes one or more modules corresponding to the above functions.

[0095] In some possible embodiments, a communication device 500 as shown in FIG. 5 may be a network device according to the above-described method embodiment and may perform the steps performed by the network device in the above-described method embodiment.

[0096] The communication device 500 includes a transceiver module 501 and a processing module 502 .

[0097] The transceiver module 501 is configured to transmit a signal to a user device, the signal including a plurality of bits, and a plurality of M bits sequentially arranged in the plurality of bits, each M bit corresponding to a time domain signal according to a mapping relationship; The mapping relationship is: M - 1 different non-all-zero M bits M - one-to-one correspondence with two different amplitude orthogonal frequency division multiplexing (OFDM) time domain signals, or M - 1 different non-all-zero M bits M -Meeting one-to-one correspondence with OFDM time domain signals having different time domain signal energies; One all-zero M bits corresponds to one space-time domain signal, where M is a positive integer.

[0098] In some possible embodiments, the amplitude is the maximum amplitude or the average amplitude, and the energy is the accumulated energy in the frequency domain.

[0099] In some possible embodiments, the frequency domain of the OFDM time domain signal includes N subcarriers, the frequency domain includes a low frequency guard band and a high frequency guard band, the low frequency guard band includes X subcarriers, the high frequency guard band includes Y subcarriers, the low frequency guard band and the high frequency guard band are not used to transmit information, N is an integer greater than 1, X is a positive integer, and Y is a positive integer.

[0100] In some possible embodiments, the value of X is the same as the value of Y, or the value of X differs from the value of Y by one.

[0101] In some possible embodiments, the frequency region includes a center subcarrier, the center subcarrier not being used to transmit information.

[0102] In some possible embodiments, the N subcarriers include K subcarriers, and the K subcarriers are used to transmit at least one complex-valued symbol, and the at least one complex-valued symbol is used to determine a maximum amplitude or an average amplitude of the OFDM time-domain signal, or is used to determine an accumulated energy in the frequency domain of the OFDM time-domain signal.

[0103] In some possible embodiments, the complex-valued symbols are Binary Phase Shift Keying (BPSK) modulation symbols, Quadrature Phase Shift Keying (QPSK) modulation symbols, and Quadrature Amplitude Modulation (QAM) modulation symbols, It is one of the following.

[0104] In some possible embodiments, the transceiver module 501 is further configured to transmit configuration information to a user device, said configuration information being used to configure the values ​​of said complex-valued symbols.

[0105] In some possible embodiments, the OFDM time domain signal is a signal obtained by modulating the complex-valued symbols corresponding to the K subcarriers, the modulation process including an Inverse Discrete Fourier Transform (IDFT).

[0106] In some possible embodiments, the modulation process comprises: The method further includes at least one of adding a cyclic prefix (CP) and symbol randomization.

[0107] In some possible embodiments, the transceiver module 501 is further configured to repeatedly transmit said M bits over multiple time domain symbols.

[0108] In some possible embodiments, the signal is a low power wake-up signal (LP WUS).

[0109] When the communication device is a network device, its configuration may be as shown in FIG. 6. As shown in FIG. 6, the device 600 includes a memory 601, a processor 602, a transceiver component 603, and a power supply component 606. Here, the memory 601 is coupled to the processor 602 and may be used to store programs and data required for the communication device 600 to realize each function. The processor 602 is configured to support the communication device 600 to execute corresponding functions in the above-mentioned methods, and these functions may be realized by calling the programs stored in the memory 601. The transceiver component 603 may be a wireless transceiver used to support the communication device 600 to receive signaling and / or data and transmit signaling and / or data via a wireless air interface. The transceiver component 603, also referred to as a transceiver unit or communication unit, may include a radio frequency component 604 and one or more antennas 605, where the radio frequency component 604 is a remote radio unit (RRU) used for transmitting radio frequency signals and converting radio frequency signals to and from baseband signals, and the one or more antennas 605 may be used for emitting and receiving radio frequency signals.

[0110] When the communication device 600 needs to transmit data, the processor 602 can perform baseband processing on the data to be transmitted and then output the baseband signal to the radio frequency unit, and the radio frequency unit can perform radio frequency processing on the baseband signal and then transmit the radio frequency signal in the form of electromagnetic waves through an antenna. When data is transmitted to the communication device 600, the radio frequency unit can receive the radio frequency signal through the antenna, convert the radio frequency signal to a baseband signal, and output the baseband signal to the processor 602, and the processor 602 converts the baseband signal to data and processes the data.

[0111] Based on the same concept as the above method embodiment, an embodiment of the present disclosure further provides a communication device that includes the UE functions in the above method embodiment and executes the steps performed by the UE provided by the above embodiment. This function can be implemented by hardware, software, or by hardware executing corresponding software. This hardware or software includes one or more modules corresponding to the above functions.

[0112] In some possible embodiments, a communications device 700 as shown in FIG. 7 may be a UE according to the above-described method embodiments and may perform the steps performed by the UE in the above-described method embodiments.

[0113] The communication device 700 includes a transceiving module 701 and a processing module 702 .

[0114] The transceiver module 701 is configured to receive a signal transmitted by a network device, the signal including a plurality of bits, and a plurality of M bits sequentially arranged in the plurality of bits, each M bit corresponding to a time domain signal according to a mapping relationship; The mapping relationship is: M - 1 different non-all-zero M bits M - one-to-one correspondence with two different amplitude orthogonal frequency division multiplexing (OFDM) time domain signals, or M - 1 different non-all-zero M bits M -Meeting one-to-one correspondence with OFDM time domain signals having different time domain signal energies; One all-zero M bits corresponds to one space-time domain signal, where M is a positive integer.

[0115] In some possible embodiments, the amplitude is the maximum amplitude or the average amplitude, and the energy is the accumulated energy in the frequency domain.

[0116] In some possible embodiments, the frequency domain of the OFDM time domain signal includes N subcarriers, the frequency domain includes a low frequency guard band and a high frequency guard band, the low frequency guard band includes X subcarriers, the high frequency guard band includes Y subcarriers, the low frequency guard band and the high frequency guard band are not used to transmit information, N is an integer greater than 1, X is a positive integer, and Y is a positive integer.

[0117] In some possible embodiments, the value of X is the same as the value of Y, or the value of X differs from the value of Y by one.

[0118] In some possible embodiments, the frequency region includes a center subcarrier, the center subcarrier not being used to transmit information.

[0119] In some possible embodiments, the N subcarriers include K subcarriers, and the K subcarriers are used to transmit at least one complex-valued symbol, and the at least one complex-valued symbol is used to determine a maximum amplitude or an average amplitude of the OFDM time-domain signal, or is used to determine an accumulated energy in the frequency domain of the OFDM time-domain signal.

[0120] In some possible embodiments, the complex-valued symbols are Binary Phase Shift Keying (BPSK) modulation symbols, Quadrature Phase Shift Keying (QPSK) modulation symbols, and Quadrature Amplitude Modulation (QAM) modulation symbols, It is one of the following.

[0121] In some possible embodiments, the transceiver module 701 is further configured to receive configuration information transmitted by a network device, the configuration information being used to set the value of the complex-valued symbol.

[0122] In some possible embodiments, the OFDM time domain signal is a signal obtained by modulating the complex-valued symbols corresponding to the K subcarriers, the modulation process including an Inverse Discrete Fourier Transform (IDFT).

[0123] In some possible embodiments, the modulation process comprises: The method further includes at least one of adding a cyclic prefix (CP) and symbol randomization.

[0124] In some possible embodiments, the transceiver module 701 is configured to repeatedly receive said M bits over multiple time domain symbols.

[0125] In some possible embodiments, the signal is a low power wake-up signal (LP WUS).

[0126] In some possible embodiments, the processing module 702 is configured to perform amplitude detection on the signal and determine a sequentially arranged number of M bits contained in the signal based on an amplitude threshold, or to perform energy detection on the signal and determine a sequentially arranged number of M bits contained in the signal based on an energy threshold.

[0127] If the communication device is a user device, its configuration may be as shown in Figure 8. The device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0128] Referring to FIG. 8, device 800 may include one or more components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input / output (I / O) interface 812, a sensor component 814, and a communication component 816.

[0129] The processing component 802 typically controls the overall operation of the device 800, such as operations related to display, phone calls, data communication, camera operation, and recording operation. The processing component 802 may include one or more processors 820 that execute instructions to complete all or some of the steps of the above-described methods. The processing component 802 may also include one or more modules to facilitate interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

[0130] The memory 804 includes: Device The memory 804 is configured to store various types of data to support operation on the device 800. Examples of this data include instructions for any applications or methods to operate on the device 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 may be implemented by any type of volatile or non-volatile storage device, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk, or a combination thereof.

[0131] The power supply component 806 provides power to the various components of the device 800. The power supply component 806 may include a power management system, one or more power sources, and other components associated with the generation, management, and distribution of power for the device 800.

[0132] The multimedia component 808 includes a screen that provides an output interface between the device 800 and a user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors for sensing touches, slides, and gestures on the touch panel. The touch sensors can detect not only the boundaries of a touch or slide motion, but also the duration and pressure associated with the touch or slide motion. In some embodiments, the multimedia component 808 includes one front camera and / or one rear camera. Device When the device 800 is in an operating mode, such as a photo mode or a video mode, the front and / or rear cameras can receive external multimedia data. Each front and rear camera may be a fixed optical lens system or may have a focal length and optical zoom capability.

[0133] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC) configured to receive external audio signals when the device 800 is in an operation mode such as a phone call mode, a recording mode, or a voice recognition mode. The received audio signals can be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 further includes a speaker for outputting audio signals.

[0134] The I / O interface 812 provides an interface between the processing component 802 and a peripheral interface module, which may be a keyboard, a click wheel, buttons, etc. These buttons may include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0135] The sensor component 814 includes one or more sensors and is used to provide various status assessments to the device 800. For example, the sensor component 814 may include: Device The sensor component 814 can detect the on / off state of the device 800, the relative positioning of components, such as the display and keypad of the device 800, and can further detect changes in the position of the device 800 or one of its components, the presence or absence of contact between the user and the device 800, the orientation or acceleration / deceleration of the device 800, and temperature changes of the device 800. The sensor component 814 can include a proximity sensor configured to detect the presence of a nearby object in the absence of physical contact. The sensor component 814 may further include an optical sensor, such as a CMOS or CCD image sensor for use in imaging applications. In some embodiments, the sensor component 814 may further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0136] The communication component 816 is configured to facilitate wired or wireless communication between the device 800 and other devices. The device 800 can access a wireless network based on a communication standard, such as Wi-Fi, 4G, or 5G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0137] In an exemplary embodiment, the apparatus 800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components and configured to perform the above methods.

[0138] In an exemplary embodiment, a non-transitory computer-readable storage medium containing instructions, such as a memory 804 containing instructions, is further provided, which can be executed by a processor 820 of the device 800 to complete the method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0139] Other embodiments of the present disclosure will be readily apparent to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modifications, uses, or adaptations of the present disclosure that follow the general principles of the embodiments of the present disclosure and include common general knowledge or ordinary technical means in the art that are not disclosed in the present disclosure. It is to be understood that the specification and examples are exemplary only, with the true scope and spirit of the embodiments of the present disclosure being indicated by the following claims.

[0140] It should be understood that the embodiments of the present disclosure are not limited to the exact structures described above and illustrated in the drawings, and that various modifications and changes can be made without departing from the scope thereof, which is limited only by the appended claims. [Industrial Applicability]

[0141] Considering the low power consumption and simple structure of a receiver receiving the signal, M bits are used as a basic unit to accommodate the envelope detection capability of the receiver, whereby the signal includes a plurality of sequentially arranged basic units, and M bits of each basic unit correspond to one time-domain signal according to a mapping relationship, whereby each non-all-zero M bits corresponds to one OFDM time-domain signal, whereby the signal is generated using an OFDM signal generation method, effectively utilizing the envelope detection capability of the receiver, and providing a signal of an appropriate format that matches the capability of the receiver.

Claims

1. 1. A method of transmitting a signal performed by a network device, comprising: transmitting a signal to a user device; The signal includes a plurality of bits, and among the plurality of M bits sequentially arranged in the plurality of bits, each M bit corresponds to one time domain signal according to a mapping relationship; The mapping relationship is: M - 1 different non-all-zero M bits M - one-to-one correspondence with Orthogonal Frequency Division Multiplexing (OFDM) time domain signals with one different amplitude, or M - 1 different non-all-zero M bits M - satisfying a one-to-one correspondence with OFDM time-domain signals having one different time-domain signal energy; One all-zero M bits corresponds to one space-time domain signal, where M is a positive integer.

10. A method for transmitting a signal, comprising:

2. The amplitude is the maximum amplitude or the average amplitude, and the energy is the cumulative energy in the frequency domain.

2. The method of claim 1 .

3. The frequency domain of the OFDM time domain signal includes N subcarriers, the frequency domain includes a low frequency guard band and a high frequency guard band, the low frequency guard band includes X subcarriers, the high frequency guard band includes Y subcarriers, the low frequency guard band and the high frequency guard band are not used to transmit information, N is an integer greater than 1, X is a positive integer, and Y is a positive integer.

3. The method according to claim 1 or 2.

4. The value of X is the same as the value of Y, or the value of X differs from the value of Y by 1.

4. The method of claim 3.

5. The frequency region includes a center subcarrier, and the center subcarrier is not used to transmit information.

4. The method of claim 3.

6. The N subcarriers include K subcarriers, The K subcarriers are used to transmit at least one complex-valued symbol, and the at least one complex-valued symbol is used to determine a maximum amplitude or an average amplitude of the OFDM time-domain signal, or to determine an accumulated energy in the frequency domain of the OFDM time-domain signal.

6. The method according to any one of claims 3 to 5.

7. The complex-valued symbols are Binary Phase Shift Keying (BPSK) modulation symbols, Quadrature Phase Shift Keying (QPSK) modulation symbols, and Quadrature Amplitude Modulation (QAM) modulation symbols, It is one of 7. The method of claim 6.

8. sending the configuration information to the user device; The configuration information is used to set the value of the complex-valued symbol.

8. The method according to any one of claims 6 to 7.

9. The OFDM time domain signal is a signal obtained by modulating the complex-valued symbols corresponding to the K subcarriers, and the modulation process includes an inverse discrete Fourier transform (IDFT).

9. The method according to any one of claims 6 to 8.

10. The modulation process includes: Further includes at least one of adding a cyclic prefix (CP) and symbol randomization.

10. The method of claim 9.

11. and repeatedly transmitting the M bits over multiple time domain symbols.

11. The method according to any one of claims 1 to 10.

12. The signal is a low power wake-up signal (LP WUS).

12. The method according to any one of claims 1 to 11.

13. 1. A method of receiving a signal performed by a user device, comprising: receiving a signal transmitted by a network device; The signal includes a plurality of bits, and among the plurality of M bits sequentially arranged in the plurality of bits, each M bit corresponds to one time domain signal according to a mapping relationship; The mapping relationship is: M - 1 different non-all-zero M bits M - one-to-one correspondence with Orthogonal Frequency Division Multiplexing (OFDM) time domain signals with one different amplitude, or M - 1 different non-all-zero M bits M - satisfying a one-to-one correspondence with OFDM time-domain signals having one different time-domain signal energy; One all-zero M bits corresponds to one space-time domain signal, where M is a positive integer.

10. A method for receiving a signal, comprising:

14. The amplitude is the maximum amplitude or the average amplitude, and the energy is the cumulative energy in the frequency domain.

14. The method of claim 13.

15. The frequency domain of the OFDM time domain signal includes N subcarriers, the frequency domain includes a low frequency guard band and a high frequency guard band, the low frequency guard band includes X subcarriers, the high frequency guard band includes Y subcarriers, the low frequency guard band and the high frequency guard band are not used to transmit information, N is an integer greater than 1, X is a positive integer, and Y is a positive integer.

15. The method according to claim 13 or 14.

16. The value of X is the same as the value of Y, or the value of X differs from the value of Y by 1.

16. The method of claim 15.

17. The frequency region includes a center subcarrier, and the center subcarrier is not used to transmit information.

17. The method of claim 16.

18. The N subcarriers include K subcarriers, The K subcarriers are used to transmit at least one complex-valued symbol, and the at least one complex-valued symbol is used to determine a maximum amplitude or an average amplitude of the OFDM time-domain signal, or to determine an accumulated energy in the frequency domain of the OFDM time-domain signal.

18. The method according to any one of claims 15 to 17.

19. The complex-valued symbols are Binary Phase Shift Keying (BPSK) modulation symbols, Quadrature Phase Shift Keying (QPSK) modulation symbols, and Quadrature Amplitude Modulation (QAM) modulation symbols, It is one of 20. The method of claim 18.

20. receiving configuration information sent by the network device; The configuration information is used to set the value of the complex-valued symbol.

20. The method according to any one of claims 17 to 19.

21. The OFDM time domain signal is a signal obtained by modulating the complex-valued symbols corresponding to the K subcarriers, and the modulation process includes an inverse discrete Fourier transform (IDFT).

20. The method according to any one of claims 17 to 19.

22. The modulation process includes: Further includes at least one of adding a cyclic prefix (CP) and symbol randomization.

22. The method of claim 21 .

23. and receiving the M bits repeatedly over a plurality of time domain symbols.

23. The method according to any one of claims 14 to 22.

24. The signal is a low power wake-up signal (LP WUS).

24. The method according to any one of claims 14 to 23.

25. performing amplitude detection on the signal and determining the sequentially arranged plurality of M bits contained in the signal based on an amplitude threshold; or and performing energy detection on the signal and determining the sequentially arranged plurality of M bits contained in the signal based on an energy threshold.

25. The method according to any one of claims 14 to 24.

26. 1. A device for transmitting a signal, comprising: a transceiver module configured to transmit a signal to a user device; The signal includes a plurality of bits, and among the plurality of M bits sequentially arranged in the plurality of bits, each M bit corresponds to one time domain signal according to a mapping relationship; The mapping relationship is: M - 1 different non-all-zero M bits M - one-to-one correspondence with Orthogonal Frequency Division Multiplexing (OFDM) time domain signals with one different amplitude, or M - 1 different non-all-zero M bits M - satisfying a one-to-one correspondence with OFDM time-domain signals having one different time-domain signal energy; One all-zero M bits corresponds to one space-time domain signal, where M is a positive integer.

1. A device for transmitting a signal, comprising:

27. 1. A device for receiving a signal, comprising: a transceiver module configured to receive signals transmitted by the network device; The signal includes a plurality of bits, and among the plurality of M bits sequentially arranged in the plurality of bits, each M bit corresponds to one time domain signal according to a mapping relationship; The mapping relationship is: M - 1 different non-all-zero M bits M - one-to-one correspondence with Orthogonal Frequency Division Multiplexing (OFDM) time domain signals with one different amplitude, or M - 1 different non-all-zero M bits M - satisfying a one-to-one correspondence with OFDM time-domain signals having one different time-domain signal energy; One all-zero M bits corresponds to one space-time domain signal, where M is a positive integer.

1. A device for receiving a signal, comprising:

28. 1. A communication device, comprising: a processor and a memory, the memory is used to store a computer program; The processor executes the computer program to implement the method of any one of claims 1 to 12 or 13 to 25. A communication device characterized by:

29. A computer-readable storage medium, comprising: The instructions are stored on a computer, and when the instructions are called and executed on the computer, the computer performs the method of any one of claims 1 to 12 or 13 to 25. A computer-readable storage medium comprising:

30. 1. A communication system comprising: A user device for carrying out the method of any one of claims 1 to 12, and A network device for carrying out the method according to any one of claims 13 to 25. A communication system comprising:

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