Communication method and apparatus, and storage medium

Abstract

The present disclosure provides a communication method and apparatus, and a storage medium. According to the present disclosure, a terminal sends an uplink transmission comprising a first sequence to a network device, so that the network device can implement frequency offset estimation on the basis of the first sequence comprised in the uplink transmission, so as to implement frequency offset compensation for the uplink transmission. The first sequence can be located in a middle part of the uplink transmission, or, the first sequence can be located at the end of the uplink transmission, so as to assist the network device in implementing frequency offset estimation more accurately, reduce the influence caused by frequency offset errors, and improve the transmission performance of the uplink transmission.

Description

Communication method, device, and storage medium Technical Field

[0001] The present disclosure relates to the field of communications, and in particular to a communication method and device, and a storage medium. Background Art

[0002] As an IoT technology based on ultra-low power consumption and self-sufficient energy, the Ambient Internet of Things (AIoT) can fully utilize environmental energy and technological advantages to achieve long-term operation and flexible deployment of equipment. It is suitable for various application scenarios such as tag inventory and perception data reporting, providing greater possibilities for the development of the IoT.

[0003] However, the duration of uplink transmission in AIoT is relatively long, and the sampling frequency offset (SFO) after continuous long-term uplink transmission is large, resulting in poor uplink transmission performance.

[0004] Summary of the Invention

[0005] In order to improve the transmission performance of uplink transmission with a long duration (such as uplink transmission of AIoT), the embodiments of the present disclosure provide a communication method and device, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided a communication method, applied to a terminal, the method comprising:

[0007] Sending an uplink transmission including a first sequence to a network device, where the first sequence is used for frequency offset estimation and the first sequence is located at a first position of the uplink transmission;

[0008] The first position is located in the middle of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

[0009] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, applied to a network device, the method comprising:

[0010] receiving an uplink transmission sent by a terminal, where the uplink transmission includes a first sequence for frequency offset estimation, and the first sequence is located at a first position of the uplink transmission;

[0011] The first position is located in the middle of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

[0012] According to a third aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0013] a transceiver module configured to send an uplink transmission including a first sequence to a network device, the first sequence being used for frequency offset estimation, the first sequence being located at a first position of the uplink transmission;

[0014] The first position is located in the middle of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

[0015] According to a fourth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0016] a transceiver module configured to receive an uplink transmission sent by a terminal, the uplink transmission including a first sequence for frequency offset estimation, the first sequence being located at a first position of the uplink transmission;

[0017] The first position is located in the middle of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

[0018] According to a fifth aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0019] one or more processors;

[0020] The terminal is used to execute the communication method provided by the first aspect.

[0021] According to a sixth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0022] one or more processors;

[0023] The network device is used to execute the communication method provided in the second aspect.

[0024] According to the seventh aspect of an embodiment of the present disclosure, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the communication method provided by the first aspect, and the network device is configured to implement the communication method provided by the second aspect.

[0025] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is provided, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method provided by the first aspect or the second aspect.

[0026] In an embodiment of the present disclosure, a terminal sends an uplink transmission including a first sequence to a network device, and the network device receives the uplink transmission sent by the terminal, thereby performing frequency offset estimation based on the first sequence included in the uplink transmission, thereby achieving frequency offset compensation for the uplink transmission. The first sequence can be located in the middle of the uplink transmission, or at the end of the uplink transmission, to help the network device more accurately estimate the frequency offset, reduce the impact of frequency offset errors, and improve the transmission performance of the uplink transmission.

[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0029] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0030] FIG2 is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure.

[0031] FIG3A is a schematic diagram of a sending structure of an uplink transmission according to an embodiment of the present disclosure.

[0032] FIG3B is a schematic diagram of a sending structure of an uplink transmission according to an embodiment of the present disclosure.

[0033] FIG3C is a schematic diagram showing the positions of first sequences of uplink transmissions of different lengths according to an embodiment of the present disclosure.

[0034] FIG3D is a schematic diagram illustrating a receiving situation when a terminal switches state according to an embodiment of the present disclosure.

[0035] FIG4A is a flow chart showing a communication method according to an embodiment of the present disclosure.

[0036] FIG4B is a flow chart illustrating a communication method according to an embodiment of the present disclosure.

[0037] FIG5A is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.

[0038] FIG5B is a schematic diagram of the structure of a network device proposed according to an embodiment of the present disclosure.

[0039] FIG6A is a schematic structural diagram of a communication device 6100 according to an embodiment of the present disclosure.

[0040] FIG6B is a schematic structural diagram of a chip 6200 according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0041] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0042] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of at least one of the associated listed items.

[0043] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various messages, these messages should not be limited to these terms. These terms are only used to distinguish messages of the same type from each other. For example, a first message may also be referred to as a second message, and similarly, a second message may be referred to as a first message without departing from the scope of this disclosure. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0044] The embodiments of the present disclosure provide a communication method, a device, and a storage medium.

[0045] In a first aspect, an embodiment of the present disclosure provides a communication method, applied to a terminal, the method comprising:

[0046] An uplink transmission including a first sequence is sent to a network device, the first sequence is used for frequency offset estimation, and the first sequence is located at a first position of the uplink transmission; wherein the first position is located in the middle part of the uplink transmission and / or the first position is located at the end of the uplink transmission.

[0047] In the above embodiment, a terminal sends an uplink transmission including a first sequence to a network device, so that the network device can perform frequency offset estimation based on the first sequence included in the uplink transmission, thereby achieving frequency offset compensation for the uplink transmission. The first sequence can be located in the middle of the uplink transmission, or at the end of the uplink transmission, to help the network device more accurately estimate the frequency offset, reduce the impact of frequency offset errors, and improve uplink transmission performance.

[0048] In combination with some embodiments of the first aspect, in some embodiments, the first position is located in the middle part of the uplink transmission, the first position is agreed upon by the protocol, or the first position is configured by the network device.

[0049] In the above embodiment, by providing two methods for configuring the first position when the first position is located in the middle part of the uplink transmission, it is possible to adopt either method to implement the configuration of the first position located in the middle part of the uplink transmission according to technical requirements, thereby improving the flexibility of the first position configuration method.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, the first position is located in the middle part of the uplink transmission, and the first position is agreed upon by the protocol. The method further includes:

[0051] Determine the first location based on a specific location agreed upon in the agreement; or

[0052] The first position is determined according to indication information agreed upon in the protocol, where the indication information is used to indicate an appearance time of the first sequence in uplink transmission.

[0053] In the above embodiment, two implementation methods of the first position located in the middle part of the uplink transmission through protocol agreement are provided, so that the specific position of the first position can be directly configured according to technical requirements, or the indication information for determining the first position can be configured to improve the flexibility of the configuration process of the first position.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, the first position is located in the middle part of the uplink transmission, and the first position is configured by the network device. The method further includes:

[0055] Determining the first location based on a specific location configured for the network device; or

[0056] The first position is determined according to indication information sent by the network device, where the indication information is used to indicate an appearance time of the first sequence in uplink transmission.

[0057] In the above embodiment, two implementation methods are provided for configuring the first position located in the middle part of the uplink transmission through the network device, so that the specific position of the first position can be directly configured according to technical requirements, or the indication information for determining the first position can be configured to improve the flexibility of the configuration process of the first position.

[0058] In conjunction with some embodiments of the first aspect, in some embodiments, the indication information is used to indicate the occurrence time of the first sequence in uplink transmission, including:

[0059] The indication information is used to indicate that a first sequence occurs when the number of repetitions of uplink transmission reaches a first number; or

[0060] The indication information is used to indicate that the first sequence appears when the number of transmit time slots for uplink transmission reaches a second number; or

[0061] The indication information is used to indicate that the first sequence appears when the number of bits sent in the uplink transmission reaches a third number; or

[0062] The indication information is used to indicate that the first sequence appears when the number of sent symbols of uplink transmission reaches a fourth number.

[0063] In the above embodiment, multiple optional implementations of the indication information indicating the appearance time of the first sequence in the uplink transmission are provided so that the indication information can be set according to technical requirements, thereby improving the flexibility of the indication information configuration process.

[0064] In combination with some embodiments of the first aspect, in some embodiments, the measurement dimension of the time length of the first sequence includes any of the following: absolute time; the number of time slots; the number of symbols; the number of useful information bits; the number of binary on-off keying (OOK) symbols; the number of amplitude-shift keying (ASK) symbols; the number of frequency-shift keying (FSK) symbols; and the number of phase-shift keying (PSK) symbols.

[0065] In the above embodiment, multiple optional measurement dimensions of the time length of the first sequence are provided so that the time length of the first sequence can be measured with an appropriate measurement dimension according to technical requirements, thereby improving the flexibility of the communication process.

[0066] In combination with some embodiments of the first aspect, in some embodiments, the number of first sequences corresponding to uplink transmissions of different time lengths is different; or, the first sequence lengths corresponding to uplink transmissions of different time lengths are different; or, the first positions corresponding to uplink transmissions of different time lengths are different; or, the sequence information of the first sequences corresponding to uplink transmissions of different time lengths is different.

[0067] In the above embodiment, for uplink transmissions of different time lengths, first sequences of different numbers, lengths, positions, and information may be configured so that the first sequences can adapt to uplink transmissions of various lengths.

[0068] In combination with some embodiments of the first aspect, in some embodiments, the sequence information of the first sequence is agreed upon by a protocol, or the sequence information of the first sequence is configured by a network device.

[0069] In the above embodiment, two optional implementations for configuring the sequence information of the first sequence are provided so that the sequence information of the first sequence can be configured according to technical requirements, thereby improving the flexibility of the sequence information configuration process of the first sequence.

[0070] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0071] Before sending an uplink transmission including a first sequence to a network device, a second sequence is sent to the network device, where the second sequence is used for frequency offset estimation; wherein the sequence information of the first sequence is different from the sequence information of the second sequence, or the sequence information of the first sequence is the low byte portion of the sequence information of the second sequence, or the sequence information of the first sequence is the high byte portion of the sequence information of the second sequence.

[0072] In the above embodiment, by sending the second sequence for frequency offset estimation before sending the uplink transmission, and sending the first sequence for frequency offset estimation during or at the end of the uplink transmission, the accuracy of frequency offset estimation is further improved, the impact of frequency offset error is reduced, and the transmission performance of the uplink transmission is improved. In addition, by providing multiple optional methods for configuring the sequence information of the first sequence and the sequence information of the second sequence, the sequence information of the first sequence can be configured to be different from that of the second sequence, or the sequence information of the first sequence can be configured as the low-byte portion of the sequence information of the second sequence, or the sequence information of the first sequence can be configured as the high-byte portion of the sequence information of the second sequence, thereby improving the flexibility of the sequence information configuration process.

[0073] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0074] When the sending duration of the uplink transmission reaches a first threshold, the terminal is controlled to switch from the first state to the second state; wherein the terminal is used to send uplink transmission in the first state, and the terminal is also used to receive downlink transmission in the second state.

[0075] In the above embodiment, when the sending duration of the uplink transmission reaches the first threshold, the terminal is controlled to switch from the first state to the second state so that the terminal can receive the downlink transmission in the second state, thereby improving the integrity and flexibility of the communication process.

[0076] In combination with some embodiments of the first aspect, in some embodiments, the calculation dimension of the sending duration of the uplink transmission is agreed upon by the protocol, or the calculation dimension of the sending duration of the uplink transmission is configured by the network device.

[0077] In the above embodiment, two optional implementation methods for configuring the calculation dimensions of the uplink transmission sending duration are provided, so that the configuration of the calculation dimensions of the uplink transmission sending duration can be implemented by either method according to technical requirements, thereby improving the flexibility of the configuration process of the calculation dimensions of the uplink transmission sending duration.

[0078] In combination with some embodiments of the first aspect, in some embodiments, the calculation dimensions of the transmission duration of the uplink transmission include any one of the following: the absolute time that the uplink transmission has been carried out; the number of time slots of the uplink transmission; the number of symbols of the uplink transmission; the number of useful information bits sent by the uplink transmission; the number of binary on-off keying OOK symbols sent by the uplink transmission; the number of amplitude keying modulation ASK symbols sent by the uplink transmission; the number of frequency keying modulation FSK symbols sent by the uplink transmission; the number of phase keying modulation PSK symbols sent by the uplink transmission.

[0079] In the above embodiment, multiple optional calculation dimensions of the uplink transmission transmission duration are provided so that the uplink transmission transmission duration can be calculated with appropriate calculation dimensions according to technical requirements, thereby improving the flexibility of the communication process.

[0080] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0081] The terminal has switched from the first state to the second state, the metering unit is started, and the metering unit is configured with a second threshold;

[0082] When the metering unit reaches the second threshold, the control terminal switches from the second state back to the first state.

[0083] In the above embodiment, by starting the metering unit when the terminal has switched from the first state to the second state, duration monitoring is achieved through the metering unit, so that when the metering unit times out (that is, reaches the second threshold), it can automatically switch back to the first state and continue to send uplink transmission to ensure the smooth progress of the uplink transmission process and the integrity of the communication process.

[0084] In conjunction with some embodiments of the first aspect, in some embodiments, the terminal has switched from the first state to the second state, and starting the metering unit includes:

[0085] The terminal has switched from the first state to the second state, and after sending a pause symbol through uplink transmission, the metering unit is started; or

[0086] The terminal has switched from the first state to the second state, and after sending a pause symbol for a first duration through uplink transmission, the metering unit is started.

[0087] In the above embodiment, multiple optional starting modes of the metering unit are provided to improve the flexibility of the metering unit starting process.

[0088] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0089] The terminal has switched back to the first state from the second state, and continues to send uplink transmission in response to receiving the excitation signal.

[0090] In the above embodiment, when the terminal has switched from the second state back to the first state, the continued sending of uplink transmission is triggered by the excitation signal to ensure the smooth progress of the uplink transmission process and the integrity of the communication process.

[0091] In combination with some embodiments of the first aspect, in some embodiments, the measuring unit is a timer, or the measuring unit is a counter.

[0092] In the above embodiments, multiple optional forms of metering units are provided so that a suitable metering unit can be selected according to technical requirements.

[0093] In combination with some embodiments of the first aspect, in some embodiments, the counting dimension of the metering unit includes any one of the following: absolute time; number of time slots; number of symbols; number of useful information bits; number of OOK symbols; number of ASK symbols; number of FSK symbols; number of PSK symbols.

[0094] In the above embodiment, multiple optional measurement dimensions of the measurement unit are provided so that duration measurement can be implemented with appropriate measurement dimensions according to technical requirements, thereby improving the flexibility of the communication process.

[0095] In conjunction with some embodiments of the first aspect, in some embodiments, when the sending duration of the uplink transmission reaches a first threshold, controlling the terminal to switch from the first state to the second state includes:

[0096] The sending duration of the uplink transmission reaches a first threshold, and the terminal has performed a complete uplink transmission, and the terminal is controlled to switch from the first state to the second state.

[0097] In the above embodiment, when the uplink transmission duration reaches the first threshold and the terminal has performed a complete uplink transmission, the terminal is controlled to switch the downlink transmission state to ensure the integrity of the uplink transmission process.

[0098] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0099] periodically receiving a second sequence for synchronization sent by the network device; or

[0100] The second sequence for synchronization sent by the network device is periodically received, and the downlink signaling sent by the network device is received after the second sequence is received.

[0101] In the above embodiment, two methods are provided for interacting the second sequence for synchronization between the terminal and the network device, that is, the second sequence for synchronization can be periodically interacted with separately, or the second sequence for synchronization can be periodically interacted with while the second sequence is followed by corresponding downlink signaling, so as to improve the flexibility of the communication process.

[0102] In combination with some embodiments of the first aspect, in some embodiments, the uplink transmission is an uplink transmission data packet, or the uplink transmission is an uplink transmission block.

[0103] In the above embodiment, multiple optional forms of uplink transmission are provided so that the specific form of uplink transmission can be configured according to technical requirements, thereby improving the flexibility of the communication process.

[0104] In a second aspect, an embodiment of the present disclosure provides a communication method, applied to a network device, comprising:

[0105] An uplink transmission sent by a receiving terminal includes a first sequence for frequency offset estimation, and the first sequence is located at a first position of the uplink transmission; wherein the first position is located in the middle part of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

[0106] In the above embodiment, by receiving an uplink transmission including a first sequence sent by a terminal, the network device can perform frequency offset estimation based on the first sequence included in the uplink transmission, thereby achieving frequency offset compensation for the uplink transmission. The first sequence can be located in the middle of the uplink transmission, or at the end of the uplink transmission, to help the network device more accurately estimate the frequency offset, reduce the impact of frequency offset errors, and improve uplink transmission performance.

[0107] In combination with some embodiments of the second aspect, in some embodiments, the first position is located in the middle part of the uplink transmission, the first position is agreed upon by the protocol, or the first position is configured by the network device.

[0108] In conjunction with some embodiments of the second aspect, in some embodiments, the first position is located in the middle part of the uplink transmission, and the first position is configured by the network device. The method further includes:

[0109] sending a specific position configured for the first sequence to the terminal; or

[0110] Indication information is sent to the terminal, where the indication information is used to indicate an appearance time of the first sequence in uplink transmission, and the indication information is also used by the terminal to determine the first position.

[0111] With reference to some embodiments of the second aspect, in some embodiments, the indication information is used to indicate the occurrence time of the first sequence in uplink transmission, including:

[0112] The indication information is used to indicate that a first sequence occurs when the number of repetitions of uplink transmission reaches a first number; or

[0113] The indication information is used to indicate that the first sequence appears when the number of transmit time slots for uplink transmission reaches a second number; or

[0114] The indication information is used to indicate that the first sequence appears when the number of bits sent in the uplink transmission reaches a third number; or

[0115] The indication information is used to indicate that the first sequence appears when the number of sent symbols of uplink transmission reaches a fourth number.

[0116] In combination with some embodiments of the second aspect, in some embodiments, the measurement dimension of the time length of the first sequence includes any one of the following: absolute time; the number of time slots; the number of symbols; the number of useful information bits; the number of binary on-off keying (OOK) symbols; the number of amplitude shift keying (ASK) symbols; the number of frequency shift keying (FSK) symbols; and the number of phase shift keying (PSK) symbols.

[0117] In combination with some embodiments of the second aspect, in some embodiments, the number of first sequences corresponding to uplink transmissions of different time lengths is different; or, the first sequence lengths corresponding to uplink transmissions of different time lengths are different; or, the first positions corresponding to uplink transmissions of different time lengths are different; or, the sequence information of the first sequences corresponding to uplink transmissions of different time lengths is different.

[0118] In combination with some embodiments of the second aspect, in some embodiments, the sequence information of the first sequence is agreed upon by a protocol, or the sequence information of the first sequence is configured by a network device.

[0119] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0120] Before the uplink transmission sent by the receiving terminal, the receiving terminal sends a second sequence, where the second sequence is used for frequency offset estimation; wherein the sequence information of the first sequence is different from the sequence information of the second sequence, or the sequence information of the first sequence is the low byte portion of the sequence information of the second sequence, or the sequence information of the first sequence is the high byte portion of the sequence information of the second sequence.

[0121] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0122] The terminal is in a first state, and an excitation signal is sent to the terminal; wherein the terminal is used to send uplink transmission in the first state, and the excitation signal is used to instruct the terminal to start sending uplink transmission.

[0123] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0124] periodically sending a second sequence for synchronization to the terminal; or

[0125] A second sequence for synchronization is periodically sent to the terminal, and downlink signaling is sent to the terminal after the second sequence is sent.

[0126] In combination with some embodiments of the second aspect, in some embodiments, the uplink transmission is an uplink transmission data packet, or the uplink transmission is an uplink transmission block.

[0127] In a third aspect, an embodiment of the present disclosure provides a terminal, including:

[0128] The transceiver module is configured to send an uplink transmission including a first sequence to a network device, the first sequence is used for frequency offset estimation, and the first sequence is located at a first position of the uplink transmission; wherein the first position is located in the middle part of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

[0129] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0130] The transceiver module is configured to receive an uplink transmission sent by a terminal, wherein the uplink transmission includes a first sequence for frequency offset estimation, and the first sequence is located at a first position of the uplink transmission; wherein the first position is located in the middle part of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

[0131] In a fifth aspect, an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the terminal is used to execute the communication method provided in the above-mentioned first aspect and any one of the first aspects.

[0132] In a sixth aspect, an embodiment of the present disclosure proposes a network device, comprising: one or more processors; wherein the network device is used to execute the communication method provided in the above-mentioned second aspect and any one of the second aspects.

[0133] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, including a terminal and a network device, wherein the terminal is configured to implement the communication method provided in the above-mentioned first aspect and any one of the first aspects, and the network device is configured to implement the communication method provided in the above-mentioned second aspect and any one of the second aspects.

[0134] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes a communication method as provided in the first aspect and any one of the first aspects, the second aspect and any one of the second aspects.

[0135] In the ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the communication method provided in the first aspect and any one of the first aspects, the second aspect and any one of the second aspects.

[0136] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the communication method provided in the first aspect and any one of the first aspects, the second aspect and any one of the second aspects.

[0137] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the communication method provided in the first aspect and any one of the first aspect, the second aspect and any one of the second aspect.

[0138] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0139] The present disclosure provides a communication method and apparatus, and a storage device. In some embodiments, the terms "communication method" and "information processing method," "frequency offset determination method," and "frequency offset estimation method" are interchangeable; the terms "communication apparatus" and "information processing apparatus," "frequency offset determination apparatus," and "frequency offset estimation apparatus" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0140] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0141] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0142] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0143] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0144] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0145] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0146] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0147] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0148] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0149] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0150] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0151] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0152] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0153] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0154] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0155] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0156] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0157] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0158] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0159] FIG1 is a schematic diagram illustrating the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 .

[0160] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device (such as an AIoT device), a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0161] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0162] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0163] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0164] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0165] In some embodiments, the core network device may be a device including multiple network elements, or may be multiple devices or device groups, each including all or part of multiple network elements. The network elements may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0166] In some embodiments, the core network device may include a first network element, such as an access and mobility management function (AMF). In some embodiments, the first network element is used for user access management and mobility management, but is not limited thereto.

[0167] In some embodiments, the core network device may include a second network element, such as a session management function (SMF). In some embodiments, the second network element is used for session management of the control plane and the user plane, but is not limited thereto.

[0168] In some embodiments, the core network device may include a third network element, such as a user plane function (UPF). In some embodiments, the third network element is used for user plane data forwarding, traffic statistics, and quality of service (QoS) management, but is not limited thereto.

[0169] In some embodiments, the core network device may include a fourth network element, such as a Policy Control Function (PCF). In some embodiments, the fourth network element is used to implement user control policy management, including but not limited to QoS control, service access control, etc.

[0170] In some embodiments, the core network device may include a fifth network element, such as a unified data management function (UDM). In some embodiments, the fifth network element is used to implement user subscription data management, roaming control, etc., but is not limited thereto.

[0171] In some embodiments, the core network device may include a sixth network element, such as an authentication server function (AUSF). In some embodiments, the sixth network element is used to implement user identity authentication, but is not limited thereto.

[0172] In some embodiments, each of the above network elements may be independent of the core network device.

[0173] In some embodiments, each of the above network elements may be part of a core network device.

[0174] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0175] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0176] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0177] In the AIoT scenario, terminals (i.e., AIoT devices, such as tag devices) can send uplink transmissions based on backscatter. However, the power of uplink transmission based on backscatter is very limited, so the transmission of uplink transmissions in AIoT (including but not limited to packets and transport blocks (TB)) needs to last for a long time in the time domain. At the same time, in order to meet the network coverage requirements, the AIoT network needs to support a bit-level or packet-level (or TB-level) time domain replication mechanism to further increase the duration of uplink transmission.

[0178] However, due to the low-cost requirements of AIoT devices, they are often configured with low-cost crystal oscillators. This results in increasing sampling frequency offset (SFO) after long periods of continuous uplink transmission, leading to poor uplink transmission performance. In view of this, embodiments of the present disclosure provide a communication method to help network devices more accurately estimate frequency offset to improve uplink transmission performance.

[0179] The above is only an exemplary description of the application scenarios of the present disclosure. In more possible implementations, the solution provided by the embodiments of the present disclosure can be applied not only in AIoT scenarios, but also in other scenarios with longer uplink transmission durations. The embodiments of the present disclosure do not limit the specific application scenarios.

[0180] In addition, it should be noted that the solution provided by the embodiments of the present disclosure can not only be applied to communication scenarios such as the Internet of Things, but can also be applied to any communication scenarios such as 4G, 5G, the sixth generation mobile communication system (6G), the Internet of Vehicles and their improved versions, and the embodiments of the present disclosure are not limited to this.

[0181] FIG2 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2 , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0182] Step S2101: A terminal in a first state sends a second sequence for frequency offset estimation to a network device.

[0183] The terminal may be used to send uplink transmission in the first state.

[0184] Optionally, the uplink transmission may be an uplink transmission data packet, or the uplink transmission may be an uplink transmission block, which is not limited in the embodiment of the present disclosure.

[0185] In some embodiments, the name of the first state is not limited, and it can be, for example, "uplink transmission state", "uplink sending state", etc.

[0186] In some embodiments, the terminal may send a second sequence to the network before sending an uplink transmission to the network device, wherein the second sequence may be used for frequency offset estimation.

[0187] Optionally, the sequence information of the second sequence may be agreed upon by a protocol, or may be configured by a network device. Regardless of whether the sequence information of the second sequence is agreed upon by a protocol or configured by a network device, the second sequence may consist of any number of bits.

[0188] Taking the sequence information of the second sequence as agreed upon by the protocol as an example, the second sequence may be a series of symbols specified by the protocol, and the second sequence may be 16 bits (bits), but is not limited thereto, and the second sequence may also be composed of other numbers of bits.

[0189] In some embodiments, the name of the second sequence is not limited, and it can be, for example, a "first pilot sequence", a "preamble sequence", etc.

[0190] In some embodiments, the network device may receive the second sequence sent by the terminal to perform frequency offset estimation and compensation based on the received second sequence.

[0191] In some embodiments, the network device may estimate the frequency offset between itself and the terminal by analyzing the received second sequence, so as to perform subsequent frequency offset compensation operations according to the estimated frequency offset.

[0192] For example, the network device may estimate the signal frequency difference between it and the terminal due to clock asynchrony by analyzing the second sequence, so as to perform subsequent frequency offset compensation operations according to the estimated frequency offset.

[0193] In some embodiments, the network device can adjust the frequency of the signal received from the terminal based on the estimated frequency deviation so that the adjusted frequency is consistent with the reference frequency of the base station, thereby eliminating signal distortion and interference caused by the frequency deviation and improving communication quality and reliability.

[0194] Step S2102: The terminal in the first state sends an uplink transmission including a first sequence for frequency offset estimation to a network device.

[0195] Optionally, the uplink transmission may be an uplink transmission data packet, or the uplink transmission may be an uplink transmission block.

[0196] The first sequence may be located at the first position of the uplink transmission. Optionally, the first position may be located in the middle of the uplink transmission, and / or the first transmission may be located at the end of the uplink transmission.

[0197] In some embodiments, the first position is located at the end of the uplink transmission, and the first sequence can be directly inserted at the end of the uplink transmission.

[0198] In some embodiments, for the first sequence located at the end of uplink transmission, the name of the first sequence is not limited, and it can be, for example, a "second pilot sequence", a "post-amble", etc.

[0199] As for the first position located in the middle of the uplink transmission, the specific position of the first position is not fixed, and it can be any position in the middle of the uplink transmission.

[0200] In some embodiments, for the first sequence located in the middle part of the uplink transmission, the name of the first sequence is not limited, and it can be, for example, a "third pilot sequence", a "mid-amble", etc.

[0201] In some embodiments, the first position is located in the middle of the uplink transmission. The first position may be agreed upon by a protocol, or the first position may be configured by a network device.

[0202] Optionally, the specific first position may be agreed upon through a protocol, or the specific first position may be configured through a network device.

[0203] In some embodiments, the first position is agreed upon in a protocol, and a specific position as the first position may be specified in the protocol, and the terminal may determine the first position according to the specific position agreed upon in the protocol.

[0204] In some embodiments, the first position is configured by a network device, and the network device may send a specific position configured for the first sequence to the terminal, so that the terminal may determine the first position according to the specific position configured by the network device.

[0205] Optionally, the first position corresponding to uplink transmissions of various possible time lengths may be specified by a protocol, that is, the position of the first sequence in uplink transmissions of various possible lengths may be specified by a protocol. Alternatively, the first position corresponding to uplink transmissions of various possible time lengths may be configured by a network device, that is, the position of the first sequence in uplink transmissions of various possible lengths may be configured by a network device.

[0206] Optionally, the calculation dimension of the time length of the uplink transmission is agreed upon by the protocol, or the calculation dimension of the time length of the uplink transmission is configured by the network device.

[0207] Optionally, the calculation dimension of the time length of the uplink transmission is any one of absolute time (such as milliseconds), the number of time slots, the number of symbols, the number of useful information bits, the number of binary on-off keying (OOK) symbols, the number of amplitude shift keying (ASK) symbols, the number of frequency shift keying (FSK) symbols, and the number of phase shift keying (PSK) symbols. The embodiment of the present disclosure does not limit the calculation dimension of the uplink transmission time length.

[0208] For example, through protocol agreement or network device configuration, the position where the sent length of the uplink transmission reaches 112 bits can be used as the first first position, the position where the sent length of the uplink transmission reaches 224 bits can be used as the second first position, and so on. In other words, a first sequence can be inserted after every 112 bits sent in the uplink transmission for frequency offset estimation.

[0209] Taking the uplink transmission as 256 bits, the first sequence as 8 bits, and the second sequence as 16 bits as an example, the sending structure of the uplink transmission can be referred to Figure 3A. Figure 3A is a schematic diagram of the sending structure of the uplink transmission according to an embodiment of the present disclosure. As shown in Figure 3A, the uplink transmission can be sent after the 16-bit second sequence (that is, the preamble) is sent. After each 112 bits of the uplink transmission are sent, an 8-bit first sequence (that is, mid-amble) can be inserted in the middle of the uplink transmission for frequency offset estimation and frequency offset compensation.

[0210] The above-mentioned Figure 3A is illustrated by taking the middle part of the uplink transmission as the first position as an example. In more possible implementation methods, for the case where the first position includes the middle part and the end of the uplink transmission, the uplink transmission is still 256 bits, the first sequence is 8 bits, and the second sequence is 16 bits as an example. The sending structure of the uplink transmission can be referred to Figure 3B. Figure 3B is a schematic diagram of the sending structure of the uplink transmission shown in an embodiment of the present disclosure. As shown in Figure 3B, the uplink transmission can be sent after the 16-bit second sequence (that is, preamble) is sent. After the uplink transmission sends 108 bits, an 8-bit first sequence (that is, mid-amble) can be inserted in the middle of the uplink transmission for frequency offset estimation and frequency offset compensation, so as to continue to send the 108-bit uplink transmission. After the uplink transmission sends another 108 bits, an 8-bit first sequence (that is, post-amble) is inserted at the end of the uplink transmission for frequency offset estimation and frequency offset compensation.

[0211] Optionally, the determination rule of the first position may be agreed upon through a protocol, or the determination rule of the first position may be configured through a network device.

[0212] In some embodiments, the first position is agreed upon by the protocol, and indication information can be agreed upon in the protocol. The indication information can be used to indicate the appearance time of the first sequence in the uplink transmission, and the terminal can determine the first position according to the indication information agreed upon by the protocol.

[0213] In some embodiments, the first position is configured by a network device, and the network device can send indication information to the terminal, and the indication information can be used to indicate the appearance time of the first sequence in the uplink transmission, so that the terminal can determine the first position based on the indication information sent by the network device.

[0214] Optionally, a protocol may specify a time length after which a first sequence located in the middle of an uplink transmission appears. Alternatively, a network device may configure a time length after which a first sequence located in the middle of an uplink transmission appears.

[0215] Optionally, protocol provisions or network device configurations can be used to stipulate that a first sequence appears after a first number of uplink transmission repetitions, or to stipulate that a first sequence appears after a second number of time slots are sent, or to stipulate that a first sequence appears after a third number of bits are sent, or to stipulate that a first sequence appears after a fourth number of symbols are sent.

[0216] That is, the indication information can be used to indicate that the first sequence appears when the number of repeated transmissions of the uplink transmission reaches a first number; or, the indication information can be used to indicate that the first sequence appears when the number of transmission time slots of the uplink transmission reaches a second number; or, the indication information can be used to indicate that the first sequence appears when the number of transmission bits of the uplink transmission reaches a third number; or, the indication information can be used to indicate that the first sequence appears when the number of transmission symbols of the uplink transmission reaches a fourth number.

[0217] For example, a protocol agreement or network configuration may be used to specify that a first sequence located in the middle of an uplink transmission appears after N repetitions, M slots, R bits, or S OOK symbols. N, M, R, and S can all be arbitrary values ​​and are not limited in this disclosure.

[0218] It should be noted that, in the case where the first position configuration is achieved through protocol agreement or network device configuration indication information, the length of the uplink transmission may not be restricted, including but not limited to, not restricting the length of the uplink data packet or the size of the uplink transmission block.

[0219] The terminal can then realize the position of the first sequence in uplink transmissions of various lengths according to protocol agreement or indication information configured by the network device.

[0220] Among them, the introduction of the calculation dimension of the uplink transmission time length can be found in the above embodiment and will not be repeated here.

[0221] In some embodiments, the time length of the first sequence may be agreed upon by a protocol, or the time length of the first sequence may be configured by a network device.

[0222] Optionally, the measurement dimension of the time length of the first sequence may include any one of absolute time (such as milliseconds), the number of time slots, the number of symbols, the number of useful information bits, the number of OOK symbols, the number of ASK symbols, the number of FSK symbols, and the number of PSK symbols. The embodiment of the present disclosure does not limit the measurement dimension of the time length of the first sequence.

[0223] In some embodiments, the sequence information of the first sequence may be agreed upon by a protocol, or the sequence information of the first sequence may be configured by a network device.

[0224] Optionally, regardless of whether the sequence information of the first sequence is agreed upon by the protocol or configured by the network device, the sequence information of the first sequence may be composed of any number of bits. For example, the first sequence may be a series of symbols agreed upon by the protocol, or the first sequence may be a series of symbols configured by the network device.

[0225] Optionally, the sequence information of the first sequence may be completely different from the sequence information of the second sequence. For example, the sequence information of the first sequence may be a string of symbols specified by the protocol that is completely different from the sequence information of the second sequence, such as [1 0 0 1 1 1 0 0].

[0226] Alternatively, the sequence information of the first sequence may be the low byte portion of the sequence information of the second sequence. Taking the second sequence as 16 bits as an example, the first sequence may be the low 8 bits portion of the first sequence.

[0227] Alternatively, the sequence information of the first sequence may be the high byte portion of the sequence information of the second sequence. Taking the second sequence as 16 bits as an example, the first sequence may be the high 8 bits portion of the first sequence.

[0228] In addition, it should be noted that the first sequence located in the middle part of the uplink transmission and the first sequence located at the end of the uplink transmission can be composed of symbols of the same bit, or the first sequence located in the middle part of the uplink transmission and the first sequence located at the end of the uplink transmission can be composed of symbols of different bits.

[0229] In addition, if the first sequence located in the middle part of the uplink transmission and the first sequence located at the end of the uplink transmission are composed of symbols of the same bit, then the first sequence located in the middle part of the uplink transmission can be the same as the first sequence located at the end of the uplink transmission, or different from the first sequence located at the end of the uplink transmission.

[0230] Optionally, the number of first sequences corresponding to uplink transmissions of different time lengths is different; or, the first sequence lengths corresponding to uplink transmissions of different time lengths are different; or, the first positions corresponding to uplink transmissions of different time lengths are different; or, the sequence information of the first sequences corresponding to uplink transmissions of different time lengths is different.

[0231] For example, for different types of terminals or terminals with different coverage levels, the duration of their uplink transmissions may vary. Therefore, different numbers of first sequences can be configured for them. Furthermore, the length, position, and sequence information of the first sequences can also vary. See Figure 3C, which is a schematic diagram illustrating the positions of first sequences of different lengths for uplink transmissions according to an embodiment of the present disclosure.

[0232] In some embodiments, the network device may receive an uplink transmission sent by a terminal, where the middle portion and / or the end of the uplink transmission includes a first sequence, so that the network device may perform frequency offset estimation and compensation based on the first sequence.

[0233] In some embodiments, the network device may further estimate the frequency offset between it and the terminal by analyzing the received first sequence, so as to perform further frequency offset compensation operations based on the estimated frequency offset to improve the accuracy of frequency offset estimation, thereby further improving communication quality.

[0234] Step S2103: The sending duration of the uplink transmission reaches a first threshold, and the terminal is controlled to switch from the first state to the second state.

[0235] In some embodiments, an uplink (UL) gap may be set so that the terminal automatically switches from a first state to a second state after the uplink transmission duration reaches a certain length. The terminal may be configured to receive downlink transmissions in the second state.

[0236] In some embodiments, the name of the second state is not limited, and it can be, for example, "downlink transmission state", "downlink receiving state", etc.

[0237] In some embodiments, the calculation dimension of the sending duration of the uplink transmission is agreed upon by the protocol, or the calculation dimension of the sending duration of the uplink transmission is configured by the network device.

[0238] In some embodiments, the calculation dimensions of the sending duration of the uplink transmission may include any one of the absolute time the uplink transmission has been carried out (such as milliseconds), the number of time slots of the uplink transmission, the number of symbols of the uplink transmission, the number of useful information bits sent by the uplink transmission, the number of OOK symbols sent by the uplink transmission, the number of ASK symbols sent by the uplink transmission, the number of FSK symbols sent by the uplink transmission, and the number of PSK symbols sent by the uplink transmission. The embodiments of the present disclosure do not limit the calculation dimensions of the sending duration of the uplink transmission.

[0239] In some embodiments, the terminal may determine the transmission duration of the uplink transmission based on the uplink transmission start time and the current time, thereby determining whether the transmission duration of the uplink transmission reaches the first threshold.

[0240] In some embodiments, the terminal may be configured with a metering unit (which may be referred to as a first metering unit), the first metering unit may be configured with a first threshold, and the terminal may start the first metering unit at the start of the uplink transmission, thereby calculating the sending duration of the uplink transmission through the metering unit. When the first metering unit times out, it can be determined that the sending duration of the uplink transmission reaches the first threshold.

[0241] Optionally, the first threshold may be agreed upon by a protocol, or the first threshold may be configured by a network device.

[0242] Optionally, the first metering unit may be a timer, or the first metering unit may be a counter.

[0243] In step S2104, the terminal has switched from the first state to the second state, and the metering unit is started.

[0244] In some embodiments, the terminal may start a new metering unit (which may be referred to as a second metering unit) when the terminal has switched from the first state to the second state.

[0245] Alternatively, the terminal may clear the first metering unit and reconfigure the first metering unit (including but not limited to reconfiguring the timeout threshold of the first metering unit) to use the reconfigured metering unit as the second metering unit.

[0246] Optionally, the second metering unit may be configured as a second threshold value, and the second threshold value may be agreed upon by a protocol, or the second threshold value may be configured by a network device.

[0247] Optionally, the first threshold and the second threshold may be the same or different, which is not limited in the present embodiment. If the first threshold and the second threshold are the same, the timeout threshold of the first metering unit may not be reconfigured.

[0248] In some embodiments, when the terminal has switched from the first state to the second state, the terminal may start the second metering unit after sending a pause symbol through uplink transmission.

[0249] In some embodiments, when the terminal has switched from the first state to the second state, the terminal may start the second metering unit after sending a pause symbol for a first duration through uplink transmission.

[0250] Optionally, the first duration may be agreed upon in a protocol, or the first duration may be configured by a network device.

[0251] Optionally, the measurement dimension of the first time length can be any one of absolute time (such as milliseconds), the number of time slots, the number of symbols, the number of useful information bits, the number of OOK symbols, the number of ASK symbols, the number of FSK symbols, and the number of PSK symbols. The embodiment of the present disclosure does not limit the measurement dimension of the first time length.

[0252] Optionally, the second metering unit may be a timer, or the second metering unit may be a counter.

[0253] Optionally, whether it is the first metering unit or the second metering unit, its counting dimension can be any one of absolute time (such as milliseconds), the number of time slots, the number of symbols, the number of useful information bits, the number of OOK symbols, the number of ASK symbols, the number of FSK symbols, and the number of PSK symbols. The embodiment of the present disclosure does not limit the counting dimension of the metering unit.

[0254] In some embodiments, the terminal may be controlled to switch from the first state to the second state when the transmission duration of the uplink transmission reaches a first threshold and the terminal has performed a complete uplink transmission.

[0255] For example, the terminal may switch to the second state only after performing a complete repetition transmission (ie, a complete transmission or repeated transmission).

[0256] In some embodiments, when the terminal is in the second state, the terminal may receive downlink transmission sent by the network device.

[0257] Optionally, the network device may periodically send the second sequence for synchronization to the terminal. That is, the network device may periodically send the second sequence for synchronization to the terminal alone.

[0258] Accordingly, the terminal may periodically receive the second sequence for synchronization sent by the network device.

[0259] Optionally, the network device may also periodically send a second sequence for synchronization to the terminal, and send downlink signaling to the terminal after sending the second sequence. That is, the network device may periodically send a second sequence for synchronization to the terminal, and the second sequence may be followed by corresponding downlink signaling.

[0260] Accordingly, the terminal may periodically receive the second sequence for synchronization sent by the network device, and receive downlink signaling sent by the network device after receiving the second sequence.

[0261] Step S2105: When the metering unit reaches the second threshold, the control terminal switches from the second state back to the first state.

[0262] In some embodiments, when the second metering unit times out, it can be determined that the metering unit has reached the second threshold. At this time, the terminal can automatically switch from the second state to the first state.

[0263] Step S2106: The terminal that has switched back to the first state continues to send downlink transmission to the network device.

[0264] In some embodiments, when the terminal has switched from the second state back to the first state, the terminal may continue to send uplink transmission in response to receiving an excitation signal (such as a Carrier Wave).

[0265] Refer to Figure 3D, which is a schematic diagram of the receiving situation when a terminal state is switched according to an embodiment of the present disclosure. As shown in Figure 3D, uplink transmission can be performed through multiple sub-channels (sub-channel, sub-channel #1, sub-channel #2, and sub-channel #3 are taken as examples in Figure 3D), and multiple sub-channels can share the UL gap, that is, multiple sub-channels can be set with the same UL gap, so that downlink transmission (such as DL preamble) can be received within the UL gap during the uplink transmission process of each sub-channel.

[0266] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0267] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0268] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0269] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0270] In some embodiments, terms such as "pilot", "pilot signal", "synchronization signal (SS)", "synchronization signal block (SSB)", and "reference signal (RS)" can be used interchangeably.

[0271] In some embodiments, terms such as "time position", "moment", "time point", and "time" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0272] In some embodiments, terms such as "sub-channel", "resource block (RB)", "physical resource block (PRB)", "sub-carrier group (SCG)", "resource element group (REG)", "PRB pair", "RB pair", "resource element (RE)", and "sub-carrier" can be used interchangeably.

[0273] In some embodiments, terms such as "slot", "sub-slot", "mini-slot", "symbol", "symbol", "frame", "radio frame", "subframe", and "transmission time interval (TTI)" can be used interchangeably.

[0274] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0275] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0276] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0277] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0278] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0279] According to the solution provided by the embodiment of the present disclosure, the terminal can not only send a preamble sequence (that is, the second sequence, preamble) before sending a UL data packet or TB, but also insert an intermediate pilot sequence (that is, the first sequence, mid-amble) in the middle of sending a UL data packet or TB, or, the terminal can insert an intermediate pilot sequence at the end of sending a UL data packet or TB to improve the accuracy of frequency offset estimation.

[0280] In some embodiments, the length of time for uplink transmission can be specified by a protocol or configured by a network device (such as a base station), and the length of time for uplink transmission can be measured by the number of slots, the number of symbols, the number of useful information bits sent, the number of OOK symbols, the number of ASK symbols, the number of FSK symbols, the number of PSK symbols, etc.

[0281] In some embodiments, the position of the intermediate pilot sequence corresponding to each possible data packet length may be configured through a protocol agreement or a network device.

[0282] For example, assuming that the length of a data packet is 256 bits, an 8-bit intermediate pilot sequence may be inserted into the middle of the transmitted data packet after each 112 bits are transmitted for frequency offset estimation and compensation.

[0283] Optionally, the intermediate pilot sequence inserted in the middle of UL transmission can be a series of symbols corresponding to bits specified by the protocol, such as [1 0 0 1 1 1 0 0]. The intermediate pilot sequence can be a sequence completely different from the preamble, or it can be the lower 8 bits or upper 8 bits of the preamble.

[0284] Optionally, in addition to inserting a pilot sequence in the middle of UL transmission, a corresponding pilot sequence (ie, a tail pilot sequence, post-amble) may be inserted at the end of UL transmission. This sequence may also be 8 bits and may be the same as or different from the mid-amble.

[0285] In some embodiments, multiple UL uplink data packet lengths or TB sizes can be specified by protocol or configured by network equipment. For each data packet length or TB size, the corresponding pilot sequence location, length and specific sequence information can be specified or configured.

[0286] Optionally, a corresponding mid-amble may appear after N repetitions, or M slots, or R bits, or S OOK symbols, as specified by a protocol or configured by a network device.

[0287] At this time, the protocol or network equipment does not limit the length or TB size of the data packet.

[0288] Optionally, for different terminal (such as tag device) types or coverage levels, different numbers, lengths, positions and specific sequence information of intermediate pilot sequences may be configured.

[0289] In some embodiments, a UL gap may also be set so that the terminal can switch to a downlink receiving state after a certain length of UL transmission to receive a corresponding synchronization signal.

[0290] Optionally, the length of UL transmission for a period of time can be calculated in milliseconds, or in the number of slots, or in the number of bits of useful information, or in the number of OOK symbols, or in the number of ASK symbols, or in the number of FSK symbols, or in the number of PSK symbols, and so on.

[0291] Optionally, the gap length for switching to the downlink reception state can be monitored by a timer or counter. For example, the terminal can start a timer or counter to monitor the gap length in the downlink reception state. The time counting unit of the timer or counter can be calculated in milliseconds, or in the number of slots, or in the number of bits of useful information, or in the number of OOK symbols, or in the number of ASK symbols, or in the number of FSK symbols, or in the number of PSK symbols, etc.

[0292] Optionally, the terminal may start a corresponding timer or counter after a pause symbol sent by UL; or, the terminal may start a corresponding timer or counter a certain time (calculated in milliseconds, number of slots, number of OOK symbols, etc.) after a pause symbol sent by UL.

[0293] Optionally, after the timer or counter times out, the terminal may switch back to the uplink sending state, and when the excitation signal (Carrier Wave) is received again, the terminal may continue uplink sending.

[0294] Optionally, the terminal may switch to the downlink receiving state, ie, start a corresponding timer or counter, after performing a complete repetition transmission (ie, a complete transmission or repeated transmission).

[0295] Optionally, the network device may periodically send a preamble for synchronization, and the preamble may be followed by corresponding downlink signaling, or the preamble may be sent in a standalone manner.

[0296] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2106. For example, step S2102 can be implemented as an independent embodiment, step S2103 can be implemented as an independent embodiment, steps 1+3 can be implemented as an independent embodiment, steps S2101+S2102 can be implemented as an independent embodiment, steps S2103+S2104+S2105 can be implemented as an independent embodiment, steps S2103+S2104+S2105+S2106 can be implemented as an independent embodiment, steps S2102+S2103+S2104+S2105 can be implemented as an independent embodiment, and steps S2102+S2103+S2104+S2105+S2106 can be implemented as an independent embodiment, but are not limited thereto.

[0297] In some embodiments, step S2103 and step S2104 may be performed simultaneously.

[0298] In some embodiments, steps S2101, S2103, S2104, S2105, and S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0299] In some embodiments, steps S2101, S2102, S2104, S2105, and S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0300] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0301] FIG4A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0302] Step S4101: Send the second sequence.

[0303] The optional implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0304] The second sequence is used for frequency offset estimation, so that frequency offset compensation can be achieved based on the second sequence.

[0305] In some embodiments, the terminal may send the second sequence to the network device, but is not limited thereto and may also send the second sequence to other entities.

[0306] In some embodiments, the terminal may send the second sequence to the network device while in the second state.

[0307] The terminal is used to send uplink transmission in the second state.

[0308] Optionally, the uplink transmission is an uplink transmission data packet, or the uplink transmission is an uplink transmission block.

[0309] In some embodiments, the network device may receive the second sequence sent by the terminal, thereby implementing frequency offset estimation and frequency offset compensation based on the received second sequence.

[0310] Step S4102: Send an uplink transmission including a first sequence.

[0311] The optional implementation of step S4102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0312] The first sequence is used for frequency offset estimation, so that frequency offset compensation can be achieved based on the first sequence.

[0313] In some embodiments, the terminal may send an uplink transmission including the first sequence to the network device, but is not limited thereto, and may also send an uplink transmission including the first sequence to other entities.

[0314] In some embodiments, the terminal may send an uplink transmission including the first sequence to the network device when the terminal is in the second state.

[0315] The first sequence is located at a first position of the uplink transmission. Optionally, the first position is located in the middle of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

[0316] The first position is located in the middle part of the uplink transmission. Optionally, the first position is agreed upon by the protocol, or the first position is configured by the network device.

[0317] In some embodiments, the first position is located in the middle part of the uplink transmission. The first position is agreed upon by the protocol, and the terminal can determine the first position according to the specific position agreed upon by the protocol.

[0318] In some embodiments, the first position is located in the middle part of the uplink transmission. The first position is agreed upon by the protocol. The terminal can determine the first position according to the indication information agreed upon by the protocol. The indication information is used to indicate the appearance time of the first sequence in the uplink transmission.

[0319] In some embodiments, the first position is located in the middle part of the uplink transmission, and the first position is configured by the network device. The terminal can determine the first position according to the specific position configured by the network device.

[0320] In some embodiments, the first position is located in the middle part of the uplink transmission, and the first position is configured by the network device. The terminal can determine the first position based on the indication information sent by the network device, and the indication information is used to indicate the appearance time of the first sequence in the uplink transmission.

[0321] Optionally, the indication information is used to indicate the time when the first sequence appears in the uplink transmission, and may include any one of the following: indication information is used to indicate that the first sequence appears when the number of repeated transmissions of the uplink transmission reaches a first number, indication information is used to indicate that the first sequence appears when the number of transmission time slots of the uplink transmission reaches a second number, indication information is used to indicate that the first sequence appears when the number of transmission bits of the uplink transmission reaches a third number, and indication information is used to indicate that the first sequence appears when the number of transmission symbols of the uplink transmission reaches a fourth number.

[0322] In some embodiments, the time length of the first sequence is agreed upon by a protocol, or the time length of the first sequence may be configured by a network device.

[0323] Optionally, the measurement dimension of the time length of the first sequence may include any one of absolute time, number of time slots, number of symbols, number of useful information bits, number of OOK symbols, number of ASK symbols, number of FSK symbols, and number of PSK symbols.

[0324] In some embodiments, the sequence information of the first sequence may be agreed upon by a protocol, or the sequence information of the first sequence may be configured by a network device.

[0325] Optionally, the sequence information of the first sequence is different from the sequence information of the second sequence, or the sequence information of the first sequence is the low byte part of the sequence information of the second sequence, or the sequence information of the first sequence is the high byte part of the sequence information of the second sequence.

[0326] Optionally, the number of first sequences corresponding to uplink transmissions of different time lengths is different; or, the first sequence lengths corresponding to uplink transmissions of different time lengths are different; or, the first positions corresponding to uplink transmissions of different time lengths are different; or, the sequence information of the first sequences corresponding to uplink transmissions of different time lengths is different.

[0327] In some embodiments, the network device may receive an uplink transmission sent by a terminal, thereby implementing frequency offset estimation and frequency offset compensation based on a first sequence located at a first position of the uplink transmission.

[0328] Step S4103: The sending duration of the uplink transmission reaches a first threshold, and the first state is switched to the second state.

[0329] The optional implementation of step S4103 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0330] The terminal is used to send uplink transmission in the first state.

[0331] In some embodiments, the calculation dimension of the sending duration of the uplink transmission is agreed upon by the protocol, or the calculation dimension of the sending duration of the uplink transmission is configured by the network device.

[0332] Optionally, the calculation dimensions of the transmission duration of the uplink transmission include any one of the absolute time the uplink transmission has been carried out, the number of time slots of the uplink transmission, the number of symbols of the uplink transmission, the number of useful information bits sent by the uplink transmission, the number of OOK symbols sent by the uplink transmission, the number of ASK symbols sent by the uplink transmission, the number of FSK symbols sent by the uplink transmission, and the number of PSK symbols sent by the uplink transmission.

[0333] Step S4104: The first state is switched to the second state, and the metering unit is started.

[0334] The optional implementation of step S4104 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0335] In some embodiments, the terminal has switched from the first state to the second state, and the terminal may start the metering unit after sending a pause symbol through uplink transmission.

[0336] In some embodiments, the terminal has switched from the first state to the second state, and the terminal may start the metering unit after sending a pause symbol for a first duration through uplink transmission.

[0337] Optionally, the measuring unit is a timer, or the measuring unit is a counter.

[0338] Optionally, the counting dimension of the metering unit includes any one of absolute time, number of time slots, number of symbols, number of useful information bits, number of OOK symbols, number of ASK symbols, number of FSK symbols, and number of PSK symbols.

[0339] In some embodiments, when the sending duration of the uplink transmission reaches a first threshold and the terminal has performed a complete uplink transmission, the terminal may switch from the first state to the second state.

[0340] In some embodiments, the terminal in the second state may periodically receive a second sequence for synchronization sent by the network device.

[0341] In some embodiments, the terminal in the second state may periodically receive a second sequence for synchronization sent by the network device, and receive downlink signaling sent by the network device after receiving the second sequence.

[0342] Step S4105: The metering unit reaches the second threshold and switches from the second state back to the first state.

[0343] The optional implementation of step S4105 can refer to the optional implementation of step S2105 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0344] Step S4106, continue sending uplink transmission.

[0345] The optional implementation of step S4106 can refer to the optional implementation of step S2106 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0346] In some embodiments, the terminal has switched from the second state back to the first state, and in response to receiving the excitation signal, continues to send uplink transmission.

[0347] The communication method involved in the embodiments of the present disclosure may include at least one of steps S4101 to S4106. For example, step S4102 can be implemented as an independent embodiment, step S4103 can be implemented as an independent embodiment, steps 1+3 can be implemented as an independent embodiment, steps S4101+S4102 can be implemented as an independent embodiment, steps S4103+S4104+S4105 can be implemented as an independent embodiment, steps S4103+S4104+S4105+S4106 can be implemented as an independent embodiment, steps S4102+S4103+S4104+S4105 can be implemented as an independent embodiment, and steps S4102+S4103+S4104+S4105+S4106 can be implemented as an independent embodiment, but are not limited thereto.

[0348] In some embodiments, step S4103 and step S4104 may be performed simultaneously.

[0349] In some embodiments, steps S4101, S4103, S4104, S4105, and S4106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0350] In some embodiments, steps S4101, S4102, S4104, S4105, and S4106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0351] FIG4B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0352] Step S4201: Obtain a second sequence.

[0353] The optional implementation of step S4201 can refer to step S2101 in Figure 2, the optional implementation of step S4101 in Figure 4A, and other related parts in the embodiments involved in Figures 2 and 4A, which will not be repeated here.

[0354] In some embodiments, the network device receives the second sequence sent by the terminal, but is not limited thereto and may also receive the second sequence sent by other entities.

[0355] In some embodiments, the network device may receive a second sequence sent by a terminal in the first state.

[0356] In some embodiments, the network device obtains a second sequence specified by the protocol.

[0357] In some embodiments, the network device obtains the second sequence from upper layer(s).

[0358] In some embodiments, the network device performs processing to obtain the second sequence.

[0359] In some embodiments, step S4201 is omitted, and the network device autonomously implements the functions indicated by the second sequence, or the above functions are default or by default.

[0360] The second sequence is used for frequency offset estimation, so that frequency offset compensation can be achieved based on the second sequence.

[0361] The terminal is configured to send an uplink transmission in the second state. Optionally, the uplink transmission is an uplink transmission data packet, or the uplink transmission is an uplink transmission block.

[0362] Step S4202: Acquire uplink transmission including a first sequence.

[0363] Optional implementations of step S4202 can be found in step S2102 of FIG. 2 , optional implementations of step S4102 of FIG. 4A , and other related parts in the embodiments involved in FIG. 2 and FIG. 4A , which will not be described in detail here.

[0364] In some embodiments, the network device receives an uplink transmission including the first sequence sent by a terminal, but is not limited thereto, and may also receive an uplink transmission including the first sequence sent by other entities.

[0365] In some embodiments, the network device may receive an uplink transmission including a first sequence sent by a terminal in a first state.

[0366] In some embodiments, the network device obtains an uplink transmission including a first sequence specified by a protocol.

[0367] In some embodiments, the network device obtains an uplink transmission including a first sequence from an upper layer(s).

[0368] In some embodiments, the network device performs processing to obtain an uplink transmission including the first sequence.

[0369] In some embodiments, step S4201 is omitted, and the network device autonomously implements the functions indicated by the uplink transmission including the first sequence, or the above functions are default or acquiescent.

[0370] The first sequence is used for frequency offset estimation, so that frequency offset compensation can be achieved based on the first sequence.

[0371] The first sequence is located at a first position of the uplink transmission. Optionally, the first position is located in the middle of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

[0372] The first position is located in the middle part of the uplink transmission. Optionally, the first position is agreed upon by the protocol, or the first position is configured by the network device.

[0373] In some embodiments, the first position is located in the middle part of the uplink transmission, the first position is configured by the network device, and the network device can send a specific position configured for the first sequence to the terminal.

[0374] In some embodiments, the first position is located in the middle part of the uplink transmission. The first position is configured by the network device. The network device can send indication information to the terminal. The indication information is used to indicate the appearance time of the first sequence in the uplink transmission. The indication information is also used by the terminal to determine the first position.

[0375] Optionally, the indication information is used to indicate the time when the first sequence appears in the uplink transmission, and may include any one of the following: indication information is used to indicate that the first sequence appears when the number of repeated transmissions of the uplink transmission reaches a first number, indication information is used to indicate that the first sequence appears when the number of transmission time slots of the uplink transmission reaches a second number, indication information is used to indicate that the first sequence appears when the number of transmission bits of the uplink transmission reaches a third number, and indication information is used to indicate that the first sequence appears when the number of transmission symbols of the uplink transmission reaches a fourth number.

[0376] In some embodiments, the time length of the first sequence is agreed upon by a protocol, or the time length of the first sequence may be configured by a network device.

[0377] Optionally, the measurement dimension of the time length of the first sequence may include any one of absolute time, number of time slots, number of symbols, number of useful information bits, number of OOK symbols, number of ASK symbols, number of FSK symbols, and number of PSK symbols.

[0378] In some embodiments, the sequence information of the first sequence may be agreed upon by a protocol, or the sequence information of the first sequence may be configured by a network device.

[0379] Optionally, the sequence information of the first sequence is different from the sequence information of the second sequence, or the sequence information of the first sequence is the low byte part of the sequence information of the second sequence, or the sequence information of the first sequence is the high byte part of the sequence information of the second sequence.

[0380] Optionally, the number of first sequences corresponding to uplink transmissions of different time lengths is different; or, the first sequence lengths corresponding to uplink transmissions of different time lengths are different; or, the first positions corresponding to uplink transmissions of different time lengths are different; or, the sequence information of the first sequences corresponding to uplink transmissions of different time lengths is different.

[0381] Step S4203: Send downlink transmission.

[0382] The optional implementation of step S4203 can be found in steps S2103, S2104, S2105 of Figure 2, the optional implementation of steps S4103, S4104, S4105 of Figure 4A, and other related parts in the embodiments involved in Figures 2 and 4A, which will not be repeated here.

[0383] In some embodiments, the network device may send downlink transmissions to a terminal, but is not limited thereto and may also send downlink transmissions to other entities.

[0384] In some embodiments, the network device may send a downlink transmission to a terminal in the second state.

[0385] The terminal is used to receive downlink transmission in the second state.

[0386] In some embodiments, the network device may periodically send a second sequence for synchronization to the terminal.

[0387] In some embodiments, the network device may periodically send a second sequence for synchronization to the terminal, and send downlink signaling to the terminal after sending the second sequence.

[0388] Step S4204, continue receiving uplink transmission.

[0389] Optional implementations of step S4204 may refer to step S2106 in FIG. 2 , optional implementations of step S4106 in FIG. 4A , and other related parts in the embodiments involved in FIG. 2 and FIG. 4A , which will not be described in detail here.

[0390] In some embodiments, the network device may send an excitation signal to the terminal, where the excitation signal is used to instruct the terminal to start sending uplink transmission.

[0391] In some embodiments, the network device may send an excitation signal to the terminal in the first state.

[0392] The communication method involved in the embodiments of the present disclosure may include at least one of steps S4201 to S4204. For example, step S4202 can be implemented as an independent embodiment, step S4203 can be implemented as an independent embodiment, steps 1+4 can be implemented as independent embodiments, steps S4201+S4202 can be implemented as independent embodiments, steps S4203+S4204 can be implemented as independent embodiments, and steps S4202+S4203+S4204 can be implemented as independent embodiments, but are not limited thereto.

[0393] In some embodiments, steps S4201, S4203, and S4204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0394] In some embodiments, steps S4201, S4202, and S4204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0395] In the embodiment of the present disclosure, step S4201 can be combined with step S4101 of Figure 4A, step S4202 can be combined with step S4202 of Figure 4A, step S4203 can be combined with steps S4103, S4104, and S4105 of Figure 4A, and step S4204 can be combined with step S4106 of Figure 4A.

[0396] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network device, etc.) in any of the above methods.

[0397] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0398] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0399] Figure 5A is a structural diagram of a terminal proposed according to an embodiment of the present disclosure. As shown in Figure 5A, the terminal 5100 may include at least a transceiver module 5101. In some embodiments, the transceiver module 5101 is configured to send an uplink transmission including a first sequence to a network device, the first sequence is used for frequency offset estimation, and the first sequence is located at a first position of the uplink transmission; wherein the first position is located in the middle part of the uplink transmission, and / or the first position is located at the end of the uplink transmission. Optionally, the transceiver module 5101 is used to execute at least one of the communication steps such as sending and / or receiving (for example, step S2101, step S2102, step S2106, but not limited thereto) performed by the terminal in any of the above methods, which will not be repeated here.

[0400] Optionally, the terminal 5100 may also include other modules. For example, the terminal 5100 may also include a processing module. The above processing module is used to execute at least one of the other steps (for example, step S2103, step S2104, step S2105, but not limited to these) performed by the terminal in any of the above methods, which will not be repeated here.

[0401] Figure 5B is a structural diagram of a network device proposed according to an embodiment of the present disclosure. As shown in Figure 5B, the network device 5200 may include at least a transceiver module 5201. In some embodiments, the transceiver module 5201 is configured to receive an uplink transmission sent by a terminal, and the uplink transmission includes a first sequence for frequency offset estimation, and the first sequence is located at a first position of the uplink transmission; wherein the first position is located in the middle part of the uplink transmission, and / or the first position is located at the end of the uplink transmission. Optionally, the transceiver module 5201 is used to execute at least one of the communication steps such as sending and / or receiving (for example, step S2101, step S2102, step S2106, but not limited thereto) performed by the network device in any of the above methods, which will not be repeated here.

[0402] Optionally, the network device 5200 may further include other modules. For example, the network device 5200 may further include a processing module. The processing module is used to execute at least one of the other steps performed by the network device in any of the above methods, which will not be repeated here.

[0403] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0404] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0405] Figure 6A is a schematic diagram of the structure of a communication device 6100 according to an embodiment of the present disclosure. Communication device 6100 can be a terminal (e.g., user equipment, etc.), a network device (e.g., access network equipment, core network equipment, etc.), a chip, chip system, or processor that supports a network device to implement any of the above methods, or a chip, chip system, or processor that supports a terminal to implement any of the above methods. Communication device 6100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0406] As shown in Figure 6A, the communication device 6100 includes one or more processors 6101. Processor 6101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, baseband chip, terminal device, terminal device chip, DU or CU, etc.), execute programs, and process program data. The communication device 6100 is used to perform any of the above methods.

[0407] In some embodiments, the communication device 6100 further includes one or more memories 6102 for storing instructions. Optionally, all or part of the memories 6102 may be located outside the communication device 6100.

[0408] In some embodiments, the communication device 6100 further includes one or more transceivers 6103. When the communication device 6100 includes one or more transceivers 6103, the transceiver 6103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S2102, step S2106, but not limited thereto), and the processor 6101 performs at least one of the other steps (for example, step S2103, step S2104, step S2105, but not limited thereto).

[0409] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0410] In some embodiments, the communication device 600 may include one or more interface circuits 6104. Optionally, the interface circuit 6104 is connected to the memory 6102. The interface circuit 6104 may be configured to receive signals from the memory 6102 or other devices, and may be configured to send signals to the memory 6102 or other devices. For example, the interface circuit 6104 may read instructions stored in the memory 6102 and send the instructions to the processor 6101.

[0411] The communication device 6100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited to FIG6A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0412] Figure 6B is a schematic diagram of the structure of a chip 6200 according to an embodiment of the present disclosure. For communication device 6100, which may be a chip or a chip system, see the schematic diagram of chip 6200 shown in Figure 6B, but the present invention is not limited thereto. Chip 6200 includes one or more processors 6201, and chip 6200 is configured to execute any of the above methods.

[0413] In some embodiments, the chip 6200 further includes one or more interface circuits 6202. Optionally, the interface circuit 6202 is connected to the memory 6203. The interface circuit 6202 can be used to receive signals from the memory 6203 or other devices, and can be used to send signals to the memory 6203 or other devices. For example, the interface circuit 6202 can read instructions stored in the memory 6203 and send the instructions to the processor 6201.

[0414] In some embodiments, the interface circuit 6202 executes at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S2102, step S2106, but not limited to these), and the processor 6201 executes at least one of the other steps (for example, step S2103, step S2104, step S2105, but not limited to these).

[0415] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0416] In some embodiments, the chip 6200 further includes one or more memories 6203 for storing instructions. Alternatively, all or part of the memories 6203 may be outside the chip 6200.

[0417] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0418] The present disclosure also provides a program product that, when executed by a communication device 6100, causes the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product. Furthermore, the present disclosure also provides a computer program that, when executed on a computer, causes the computer to perform any of the above methods.

[0419] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0420] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is defined by the appended claims.

Claims

1. A communication method, characterized in that, Applied to a terminal, the method includes: Sending an uplink transmission including a first sequence for frequency offset estimation to a network device, where the first sequence is located at a first position of the uplink transmission; Wherein, the first position is located in the middle part of the uplink transmission, and / or, the first position is located at the end of the uplink transmission.

2. The method according to claim 1, wherein The first position is located in the middle part of the uplink transmission, and the first position is agreed upon by the protocol or configured by the network device.

3. The method according to claim 2, wherein The first position is located in the middle part of the uplink transmission, and the first position is agreed upon by the protocol. The method further includes: Determining the first position according to a specific position agreed upon by the protocol; or Determining the first position according to indication information agreed upon by the protocol, where the indication information is used to indicate the occurrence time of the first sequence in the uplink transmission.

4. The method according to claim 2, wherein The first position is located in the middle part of the uplink transmission, and the first position is configured by the network device. The method further includes: Determining the first position according to a specific position configured by the network device; or Determining the first position according to indication information sent by the network device, where the indication information is used to indicate the occurrence time of the first sequence in the uplink transmission.

5. The method according to claim 3 or 4, characterized in that, The indication information is used to indicate the occurrence time of the first sequence in the uplink transmission, including: The indication information is used to indicate that the first sequence appears when the number of repeated transmissions of the uplink transmission reaches a first quantity; or The indication information is used to indicate that the first sequence appears when the number of transmission time slots of the uplink transmission reaches a second quantity; or The indication information is used to indicate that the first sequence appears when the number of transmitted bits of the uplink transmission reaches a third quantity; or The indication information is used to indicate that the first sequence appears when the number of transmitted symbols of the uplink transmission reaches a fourth quantity.

6. The method according to any one of claims 1 to 5, characterized in that The measurement dimension of the time length of the first sequence includes any one of the following: Absolute time; Number of time slots; Number of symbols; Number of useful information bits; Number of binary on-off keying (OOK) symbols; Number of amplitude shift keying (ASK) symbols; Number of frequency shift keying (FSK) symbols; Number of phase shift keying (PSK) symbols.

7. The method according to any one of claims 1 to 6, characterized in that, The number of first sequences corresponding to uplink transmissions with different time lengths is different; or, the lengths of the first sequences corresponding to uplink transmissions with different time lengths are different; or, the first positions corresponding to uplink transmissions with different time lengths are different; or, the sequence information of the first sequences corresponding to uplink transmissions with different time lengths is different.

8. The method according to any one of claims 1 to 7, characterized in that, The sequence information of the first sequence is agreed upon by the protocol or configured by the network device.

9. The method according to any one of claims 1 to 8, characterized in that, The method further includes: Before sending an uplink transmission including a first sequence to the network device, sending a second sequence to the network device, The second sequence is used for frequency offset estimation; Wherein, the sequence information of the first sequence is different from the sequence information of the second sequence, or the sequence information of the first sequence is the low byte part of the sequence information of the second sequence, or the sequence information of the first sequence is the high byte part of the sequence information of the second sequence.

10. The method according to any one of claims 1 to 9, characterized in that, The method further includes: When the transmission duration of the uplink transmission reaches a first threshold, the control terminal switches from a first state to a second state; Wherein, the terminal is used to send uplink transmissions in the first state, and the terminal is also used to receive downlink transmissions in the second state.

11. The method according to claim 10, wherein The calculation dimension of the transmission duration of the uplink transmission is agreed upon by the protocol, or the calculation dimension of the transmission duration of the uplink transmission is configured by the network device.

12. The method according to claim 11, wherein The calculation dimension of the transmission duration of the uplink transmission includes any one of the following: The absolute time for which the uplink transmission has been carried out; The number of time slots of the uplink transmission; The number of symbols of the uplink transmission; The number of useful information bits sent in the uplink transmission; The number of binary on-off keying (OOK) symbols sent in the uplink transmission; The number of amplitude shift keying (ASK) symbols sent in the uplink transmission; The number of frequency shift keying (FSK) symbols sent in the uplink transmission; The number of phase shift keying (PSK) symbols sent in the uplink transmission.

13. The method according to any one of claims 10 to 12, characterized in that, The method further includes: When the terminal has switched from the first state to the second state, start a metering unit, and the metering unit is configured with a second threshold; When the metering unit reaches the second threshold, control the terminal to switch back from the second state to the first state.

14. The method according to claim 13, wherein When the terminal has switched from the first state to the second state and starts the metering unit, it includes: When the terminal has switched from the first state to the second state, after sending a pause symbol through the uplink transmission, start the metering unit; or When the terminal has switched from the first state to the second state, after a first duration of sending a pause symbol through the uplink transmission, start the metering unit.

15. The method according to claim 13 or 14, characterized in that, The method further includes: When the terminal has switched back from the second state to the first state, in response to receiving an excitation signal, continue to send the uplink transmission.

16. The method according to any one of claims 13 to 15, characterized in that The metering unit is a timer or a counter.

17. The method according to any one of claims 13 to 16, characterized in that The counting dimension of the metering unit includes any one of the following: Absolute time; Number of time slots; Number of symbols; Number of useful information bits; Number of OOK symbols; Number of ASK symbols; Number of FSK symbols; Number of PSK symbols.

18. The method according to any one of claims 10 to 17, characterized in that, When the transmission duration of the uplink transmission reaches a first threshold and controls the terminal to switch from the first state to the second state, it includes: When the transmission duration of the uplink transmission reaches the first threshold and the terminal has completed a complete uplink transmission, control the terminal to switch from the first state to the second state.

19. The method according to any one of claims 10 to 18, characterized in that, The method further includes: Periodically receive a second sequence sent by the network device for synchronization; or Periodically receive a second sequence sent by the network device for synchronization, and receive a downlink signaling sent by the network device after receiving the second sequence.

20. The method according to any one of claims 1 to 19, characterized in that The uplink transmission is an uplink transmission data packet or an uplink transmission block.

21. A communication method, characterized in that, Applied to a network device, the method includes: Receive an uplink transmission sent by a terminal, where the uplink transmission includes a first sequence for frequency offset estimation, and the first sequence is located at a first position of the uplink transmission; Wherein, the first position is located in the middle part of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

22. The method according to claim 21, wherein The first position is located in the middle part of the uplink transmission, and the first position is agreed upon by the protocol or configured by the network device.

23. The method according to claim 22, wherein The first position is located in the middle part of the uplink transmission, and the first position is configured by the network device. The method further includes: Sending to the terminal a specific position configured for the first sequence; or Sending to the terminal indication information for indicating the occurrence time of the first sequence in the uplink transmission, where the indication information is further used by the terminal to determine the first position.

24. The method according to claim 23, wherein The indication information for indicating the occurrence time of the first sequence in the uplink transmission includes: The indication information is used to indicate that the first sequence appears when the number of repeated transmissions of the uplink transmission reaches a first quantity; or The indication information is used to indicate that the first sequence appears when the number of transmission time slots of the uplink transmission reaches a second quantity; or The indication information is used to indicate that the first sequence appears when the number of transmitted bits of the uplink transmission reaches a third quantity; or The indication information is used to indicate that the first sequence appears when the number of transmitted symbols of the uplink transmission reaches a fourth quantity.

25. The method according to any one of claims 21 to 24, characterized in that, The measurement dimension of the time length of the first sequence includes any one of the following: Absolute time; Number of time slots; Number of symbols; Number of useful information bits; Number of binary on-off keying (OOK) symbols; Number of amplitude shift keying (ASK) modulation symbols; Number of frequency shift keying (FSK) modulation symbols; Number of phase shift keying (PSK) modulation symbols.

26. The method according to any one of claims 21 to 25, characterized in that, The number of first sequences corresponding to uplink transmissions with different time lengths is different; or the lengths of the first sequences corresponding to uplink transmissions with different time lengths are different; or the first positions corresponding to uplink transmissions with different time lengths are different; or the sequence information of the first sequences corresponding to uplink transmissions with different time lengths is different.

27. The method according to any one of claims 21 to 26, characterized in that, The sequence information of the first sequence is agreed upon by the protocol or configured by the network device.

28. The method according to any one of claims 21 to 27, characterized in that, The method further includes: Before receiving the uplink transmission sent by the terminal, receiving a second sequence sent by the terminal, where the second sequence is used for frequency offset estimation; Wherein, the sequence information of the first sequence is different from the sequence information of the second sequence, or the sequence information of the first sequence is the low byte part of the sequence information of the second sequence, or the sequence information of the first sequence is the high byte part of the sequence information of the second sequence.

29. The method according to any one of claims 21 to 28, characterized in that, The method further includes: When the terminal is in a first state, sending an excitation signal to the terminal; Wherein, the terminal is used to send the uplink transmission in the first state, and the excitation signal is used to instruct the terminal to start sending the uplink transmission.

30. The method according to any one of claims 21 to 29, characterized in that, The method further includes: Periodically sending a second sequence for synchronization to the terminal; or Periodically sending a second sequence for synchronization to the terminal and sending a downlink signaling to the terminal after sending the second sequence.

31. The method according to any one of claims 21 to 30, characterized in that, The uplink transmission is an uplink transmission data packet or an uplink transmission block.

32. A terminal, characterized in that, Includes: A transceiver module, configured to send an uplink transmission including a first sequence for frequency offset estimation to a network device, where the first sequence is located at a first position of the uplink transmission; wherein the first position is located in the middle part of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

33. A network device, characterized in that, Comprising: A transceiver module, configured to receive an uplink transmission sent by a terminal, where the uplink transmission includes a first sequence for frequency offset estimation, and the first sequence is located at a first position of the uplink transmission; wherein the first position is located in the middle part of the uplink transmission, and / or the first position is located at the end of the uplink transmission.

34. A terminal, characterized in that, Comprising: One or more processors; wherein the terminal is used to execute the communication method according to any one of claims 1-20.

35. A network device, characterized in that, Comprising: One or more processors; wherein the network is used to execute the communication method according to any one of claims 21-31.

36. A communication system, characterized in that, Comprising a terminal and a network device, wherein the terminal is configured to implement the communication method according to any one of claims 1-20, and the network device is configured to implement the communication method according to any one of claims 21-31.

37. A storage medium storing instructions, characterized in that, When the instruction runs on a communication device, the communication device is caused to execute the communication method according to any one of claims 1-20 or 21-31.

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