Communication method and apparatus
Patent Information
- Application Number
- PCT/CN2026/085147
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-03-28
- Filing Date
- 2026-03-23
- Publication Date
- 2026-10-01
Smart Images
Figure CN2026085147_01102026_PF_FP_ABST
Abstract
Description
Communication methods and devices
[0001] This application claims priority to Chinese Patent Application No. 202510397872.4, filed with the State Intellectual Property Office of China on March 28, 2025, entitled "Communication Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field
[0002] This application relates to the field of wireless communication, and more particularly to communication methods and apparatus. Background Technology
[0003] The Internet of Things (IoT), as a significant trend in information technology development, is increasingly demonstrating its necessity and influence. By connecting various physical devices to the internet, the IoT enables intelligent interaction between these devices, bringing revolutionary changes to numerous fields such as industrial automation, smart cities, telemedicine, and environmental monitoring. With the explosive growth of global data and people's pursuit of intelligent lifestyles, the necessity and importance of IoT technology are becoming increasingly prominent. This technology can not only improve efficiency and reduce costs but also create new business models and value.
[0004] One major technical challenge for IoT devices is power supply. This means that IoT devices need high-capacity batteries to function properly, such as supporting communication. This makes it difficult to make IoT devices very small. Therefore, one development direction to extend the lifespan of IoT devices is to reduce their power consumption.
[0005] Currently, 5G mobile communication systems define the reference frequency for the radio frequency (RF) of new radio (NR). However, whether the RF reference frequency in NR still applies to low-power IoT devices during communication is currently undetermined. Therefore, determining the frequency position for communication in such IoT devices is a problem that needs to be solved. Summary of the Invention
[0006] This application provides a communication method and apparatus for determining a reference frequency. This reference frequency is associated with a first parameter related to the frequency range, a global frequency grid granularity, a new radio absolute radio frequency channel number (ARFCN), and a second parameter related to the ARFCN range. Optionally, a first offset may also be included. By introducing this first offset, or adjusting the value of the global frequency grid granularity, the filter center frequency can be kept consistent with the reference frequency, enabling complete transmission or reception of data for ambient Internet of Things (IoT) communication. Within a certain channel bandwidth, for the transmitting side, this avoids the problem of a small protection bandwidth on one side and a large protection bandwidth on the other due to the inconsistency between the filter center and the actual bandwidth occupied by the signal. This prevents an increase in the complexity of the transmitting side filter implementation. For the receiving side, there is no need to increase the filter bandwidth, thus avoiding the reception of more noise and interference due to increased filter bandwidth, and improving communication performance.
[0007] To achieve the above objectives, this application adopts the following technical solution:
[0008] In a first aspect, a communication method is provided. This method is applied to a first device, or the first device can be a component of a communication device (e.g., a processor, circuit, chip, or chip system), or a logic module or software capable of implementing all or part of the functions of the first device. The first device can be a terminal, a network device, or a relay device. The method includes: determining a first reference frequency. For example, the first reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, a second parameter, and a first offset. For example, the first parameter is an offset used to calculate a second reference frequency, and the second parameter is an offset used to calculate the ARFCN. For example, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter. The aforementioned first reference frequency is a reference frequency for a carrier used in environmental Internet of Things (IoT) communication. Data is then transmitted to a second device based on the first reference frequency.
[0009] This application can determine a first reference frequency. This first reference frequency is associated with a first parameter related to the frequency range, a global frequency grid granularity, an ARFCN, a second parameter related to the ARFCN range, and a first offset. By introducing this first offset, the filter center frequency can be kept consistent with the first reference frequency, ensuring complete reception of data used for IoT communication in the surrounding environment. Within a certain channel bandwidth, for the transmitting side, this avoids the problem of a small protection bandwidth on one side and a large protection bandwidth on the other due to the inconsistency between the filter center and the actual bandwidth occupied by the signal. This prevents an increase in the complexity of the transmitting side filter implementation. For the receiving side, there is no need to increase the filter bandwidth, thus avoiding the reception of more noise and interference due to increased filter bandwidth, and improving communication performance. In one possible design, the granularity of the channel grid in the carrier's operating frequency band can be 10kHz.
[0010] This application can be applied to communication scenarios with a channel grid granularity of 10kHz, so that carriers used for ambient IoT in this scenario can be flexibly deployed within the NR transmission bandwidth, and resource block boundary alignment can be maintained.
[0011] In one possible design, the first reference frequency is associated with a first parameter, global frequency grid granularity, ARFCN, a second parameter, and a first offset, and may include: the first reference frequency satisfying the following relationship, F AREF =F REF-Offs +ΔF Global (N REF -N REF-Offs )+Δ. For example, F AREF As the first reference frequency, F REF-Offs As the first parameter, ΔF Global For global frequency grid granularity, N REF For ARFCN, N REF-Offs The second parameter is Δ, and the first offset is ΔF. Global It can be 5kHz, N REF The step size can be 2.
[0012] This application provides a specific method for determining the first reference frequency, thereby obtaining a reference frequency for communication. This ensures that the filter center frequency is consistent with the first reference frequency. Within a certain channel bandwidth, for the transmitting side, it avoids the problem of one side having a small protection bandwidth and the other side having a large protection bandwidth due to the inconsistency between the filter center and the center of the actual bandwidth occupied by the signal. This prevents the increased complexity of the transmitting side filter implementation. For the receiving side, it avoids configuring filters with larger bandwidths, thereby avoiding the introduction of additional noise and interference and improving communication performance.
[0013] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-Offs The value can be 0, N REF-Offs The value can be 0.
[0014] This application provides the value range of some parameters related to the first reference frequency to be applicable to communication scenarios with different frequency domain resources, thereby improving universality.
[0015] In one possible design, the first offset could be -7.5kHz or 2.5kHz.
[0016] In one possible design, the value of the first offset may include one or more of -7.5kHz, -2.5kHz, 2.5kHz, and 7.5kHz.
[0017] This application provides a variety of selectable values for the first offset so that an accurate first reference frequency can be obtained based on the frequency of any possible channel grid, thereby improving communication performance.
[0018] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0019] This application provides the value range of some parameters related to the first reference frequency to be applicable to communication scenarios with different frequency domain resources, thereby improving universality.
[0020] In one possible design, the first reference frequency is the center frequency of the carrier wave.
[0021] This application uses the first reference frequency as the center frequency of the carrier, ensuring that the filter's center frequency is consistent with the first reference frequency, thus enabling complete reception of data used for IoT communication in the surrounding environment. Within a certain channel bandwidth, for the transmitting side, it avoids the problem of one side having a small protection bandwidth and the other side having a large protection bandwidth due to the inconsistency between the filter center and the actual bandwidth occupied by the signal. This prevents the increased complexity of the transmitting side filter implementation. For the receiving side, there is no need to increase the filter bandwidth, thereby avoiding the reception of more noise and interference due to increased filter bandwidth, and improving communication performance.
[0022] Secondly, a communication method is provided, which is applied to a first device, or the first device can be a component of a communication device (e.g., a processor, circuit, chip, or chip system), or a logic module or software capable of implementing all or part of the functions of the first device. The first device can be a terminal, a network device, or a relay device. The method includes: determining a second reference frequency. For example, the second reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, and a second parameter. For example, the first parameter is an offset used to calculate the second reference frequency, and the second parameter is an offset used to calculate the ARFCN. The aforementioned second reference frequency is a reference frequency for a carrier used for environmental IoT communication. For example, the global frequency grid granularity can be 2.5 kHz. Data is then transmitted to a second device based on the second reference frequency.
[0023] This application can determine a second reference frequency. This second reference frequency is associated with a first parameter related to the frequency range, the global frequency grid granularity, the ARFCN, and a second parameter related to the ARFCN range. By adjusting the global frequency grid granularity, without introducing additional offsets, the filter center frequency and the second reference frequency can be kept consistent, ensuring complete reception of data used for IoT communication in the surrounding environment. Within a certain channel bandwidth, for the transmitting side, this avoids the problem of a small protection bandwidth on one side and a large protection bandwidth on the other due to a mismatch between the filter center and the actual bandwidth occupied by the signal. This prevents increased complexity in the transmitting side filter implementation. For the receiving side, there is no need to increase the filter bandwidth, thus avoiding receiving more noise and interference due to increased filter bandwidth, and improving communication performance.
[0024] In one possible design, the granularity of the channel grid in the carrier's operating frequency band is 2.5 kHz.
[0025] This application can be applied to communication scenarios with a channel grid granularity of 2.5kHz, so that carriers used for ambient IoT in this scenario can be flexibly deployed within the NR transmission bandwidth, and resource block boundary alignment can be maintained.
[0026] In one possible design, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter, and may include: the second reference frequency satisfying the following relationship, F REF =F REF-Offs +ΔF Global (N REF -N REF-Offs For example, F REF For the second reference frequency, F REF-Offs As the first parameter, ΔF Global For global frequency grid granularity, N REF For ARFCN, NREF-Offs This is the second parameter. For example, N REF The step size can be 1.
[0027] This application increases the number of selectable positions for the channel grid by adjusting the values of some parameters without changing the reference frequency determination method. Therefore, it eliminates the need to introduce additional offsets, ensuring that the filter center frequency remains consistent with the first reference frequency. Within a certain channel bandwidth, for the transmitting side, this avoids situations where the filter center and the actual bandwidth occupied by the signal are inconsistent, resulting in a small protection bandwidth on one side and a large protection bandwidth on the other. This prevents increased complexity in the transmitting side filter implementation. For the receiving side, it avoids configuring filters with larger bandwidths, thereby preventing the introduction of additional noise and interference and improving communication performance.
[0028] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-Offs The value can be 0, N REF-Offs The value can be 0.
[0029] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0030] In one possible design, the second reference frequency is the center frequency of the carrier wave.
[0031] Thirdly, a communication method is provided, which is applied to a second device, or the second device can be a component of a communication device (e.g., a processor, circuit, chip, or chip system), or a logic module or software capable of implementing all or part of the functions of the second device. The second device can be a terminal or a network device. The method includes: receiving data from a first device in a first frequency band. The first frequency band includes a first reference frequency. For example, the first reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, a second parameter, and a first offset. For example, the first parameter is an offset used to calculate a second reference frequency, and the second parameter is an offset used to calculate the ARFCN. For example, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter. The aforementioned first reference frequency is a reference frequency for a carrier used in environmental IoT communication. Detection data.
[0032] In one possible design, the granularity of the channel grid in the carrier's operating frequency band can be 10 kHz.
[0033] In one possible design, the first reference frequency is associated with a first parameter, global frequency grid granularity, ARFCN, a second parameter, and a first offset, and may include: the first reference frequency satisfying the following relationship, F AREF =F REF-Offs +ΔF Global (N REF -N REF-Offs )+Δ. For example, F AREF As the first reference frequency, F REF-Offs As the first parameter, ΔF Global For global frequency grid granularity, N REF For ARFCN, N REF-Offs The second parameter is Δ, and the first offset is ΔF. Global It can be 5kHz, N REF The step size can be 2.
[0034] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-Offs The value can be 0, N REF-Offs The value can be 0.
[0035] In one possible design, the first offset could be -7.5kHz or 2.5kHz.
[0036] In one possible design, the value of the first offset may include one or more of -7.5kHz, -2.5kHz, 2.5kHz, and 7.5kHz.
[0037] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0038] In one possible design, the second reference frequency is the center frequency of the carrier wave.
[0039] Fourthly, a communication method is provided, which is applied to a second device, or the second device can be a component of a communication device (e.g., a processor, circuit, chip, or chip system), or a logic module or software capable of implementing all or part of the functions of the second device. The second device can be a terminal or a network device. The method includes: receiving data from a first device in a first frequency band. The first frequency band includes a second reference frequency. For example, the second reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, and a second parameter. For example, the first parameter is an offset used to calculate the second reference frequency, and the second parameter is an offset used to calculate the ARFCN. The aforementioned second reference frequency is a reference frequency for a carrier used for environmental IoT communication. For example, the global frequency grid granularity is 2.5 kHz. Detection data.
[0040] In one possible design, the granularity of the channel grid in the carrier's operating frequency band is 2.5 kHz.
[0041] In one possible design, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter, and may include: the second reference frequency satisfying the following relationship, F REF =F REF-Offs +ΔF Global (N REF -N REF-Offs For example, F REF For the second reference frequency, F REF-Offs As the first parameter, ΔF Global For global frequency grid granularity, N REF For ARFCN, N REF-Offs This is the second parameter. For example, N REF The step size can be 1.
[0042] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-Offs The value can be 0, N REF-Offs The value can be 0.
[0043] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0044] In one possible design, the second reference frequency is the center frequency of the carrier wave.
[0045] Fifthly, a communication device is provided, which may be a first device, a communication module implementing the functions corresponding to the first device, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip), a system-on-chip (SoC) containing a modem module, or a system-in-package (SIP) chip. It may also be a logic module or software capable of implementing all or part of the functions of the first device. The terminal device may be a terminal, a network device, or a relay device. The communication device includes: a processing unit configured to determine a first reference frequency. For example, the first reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, a second parameter, and a first offset. For example, the first parameter is an offset used to calculate a second reference frequency, and the second parameter is an offset used to calculate the ARFCN. For example, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter. The aforementioned first reference frequency is a reference frequency for a carrier used for environmental Internet of Things (IoT) communication. The processing unit is further configured to control a transceiver unit to send data to a second device based on the first reference frequency.
[0046] In one possible design, the granularity of the channel grid in the carrier's operating frequency band can be 10 kHz.
[0047] In one possible design, the first reference frequency is associated with a first parameter, global frequency grid granularity, ARFCN, a second parameter, and a first offset, and may include: the first reference frequency satisfying the following relationship, F AREF =F REF-Offs +ΔF Global (N REF -N REF-Offs )+Δ. For example, F AREF As the first reference frequency, F REF-Offs As the first parameter, ΔF Global For global frequency grid granularity, N REF For ARFCN, N REF-Offs The second parameter is Δ, and the first offset is ΔF. Global It can be 5kHz, N REF The step size can be 2.
[0048] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-Offs The value can be 0, N REF-Offs The value can be 0.
[0049] In one possible design, the first offset could be -7.5kHz or 2.5kHz.
[0050] In one possible design, the value of the first offset may include one or more of -7.5kHz, -2.5kHz, 2.5kHz, and 7.5kHz.
[0051] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0052] In one possible design, the first reference frequency is the center frequency of the carrier wave.
[0053] Sixthly, a communication device is provided, which may be a first device, a communication module implementing the functions corresponding to the first device, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It may also be a logic module or software capable of implementing all or part of the functions of the first device. The terminal device may be a terminal, a network device, or a relay device. The communication device includes: a processing unit configured to determine a second reference frequency. For example, the second reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, and a second parameter. For example, the first parameter is an offset used to calculate the second reference frequency, and the second parameter is an offset used to calculate the ARFCN. The aforementioned second reference frequency is a reference frequency for a carrier used for environmental IoT communication. For example, the global frequency grid granularity may be 2.5 kHz. The processing unit is further configured to control a transceiver unit to send data to a second device based on the second reference frequency.
[0054] In one possible design, the granularity of the channel grid in the carrier's operating frequency band is 2.5 kHz.
[0055] In one possible design, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter, and may include: the second reference frequency satisfying the following relationship, F REF =F REF-Offs +ΔF Global (N REF -N REF-Offs For example, F REF For the second reference frequency, F REF-Offs As the first parameter, ΔF Global For global frequency grid granularity, N REF For ARFCN, N REF-Offs This is the second parameter. For example, NREF The step size can be 1.
[0056] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-Offs The value can be 0, N REF-Offs The value can be 0.
[0057] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0058] In one possible design, the second reference frequency is the center frequency of the carrier wave.
[0059] In a seventh aspect, a communication device is provided. This communication device may be a second device, a communication module implementing the corresponding functions of the second device, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It may also be a logic module or software capable of implementing all or part of the functions of the second device. The terminal device may be a terminal or a network device. The communication device includes: a transceiver unit for receiving data from a first device on a first frequency band. The first frequency band includes a first reference frequency. For example, the first reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, a second parameter, and a first offset. For example, the first parameter is an offset used to calculate a second reference frequency, and the second parameter is an offset used to calculate the ARFCN. For example, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter. The aforementioned first reference frequency is a reference frequency for a carrier used for environmental IoT communication. A processing unit for detecting data.
[0060] In one possible design, the granularity of the channel grid in the carrier's operating frequency band can be 10 kHz.
[0061] In one possible design, the first reference frequency is associated with a first parameter, global frequency grid granularity, ARFCN, a second parameter, and a first offset, and may include: the first reference frequency satisfying the following relationship, F AREF =F REF-Offs +ΔF Global (N REF -N REF-Offs )+Δ. For example, F AREF As the first reference frequency, F REF-Offs As the first parameter, ΔFGlobal For global frequency grid granularity, N REF For ARFCN, N REF-Offs The second parameter is Δ, and the first offset is ΔF. Global It can be 5kHz, N REF The step value can be 2.
[0062] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-Offs The value can be 0, N REF-Offs The value can be 0.
[0063] In one possible design, the first offset could be -7.5kHz or 2.5kHz.
[0064] In one possible design, the value of the first offset may include one or more of -7.5kHz, -2.5kHz, 2.5kHz, and 7.5kHz.
[0065] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0066] In one possible design, the second reference frequency is the center frequency of the carrier wave.
[0067] Eighthly, a communication device is provided, which may be a second device, a communication module implementing the corresponding functions of the second device, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It may also be a logic module or software capable of implementing all or part of the functions of the second device. The terminal device may be a terminal or a network device. The communication device includes: a transceiver unit for receiving data from a first device on a first frequency band. The first frequency band includes a second reference frequency. For example, the second reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, and a second parameter. For example, the first parameter is an offset used to calculate the second reference frequency, and the second parameter is an offset used to calculate the ARFCN. The aforementioned second reference frequency is a reference frequency for a carrier used for environmental Internet of Things (IoT) communication. For example, the global frequency grid granularity is 2.5 kHz. A processing unit for detecting data.
[0068] In one possible design, the granularity of the channel grid in the carrier's operating frequency band is 2.5 kHz.
[0069] In one possible design, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter, and may include: the second reference frequency satisfying the following relationship, F REF =F REF-Offs +ΔF Global (N REF -N REF-Offs For example, F REF For the second reference frequency, F REF-Offs As the first parameter, ΔF Global For global frequency grid granularity, N REF For ARFCN, N REF-Offs This is the second parameter. For example, N REF The step size can be 1.
[0070] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-Offs The value can be 0, N REF-Offs The value can be 0.
[0071] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0072] In one possible design, the second reference frequency is the center frequency of the carrier wave.
[0073] A ninth aspect provides a communication device, which is a first device, a communication module implementing the functions corresponding to the first device, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It can also be a logic module or software capable of implementing all or part of the functions of the first device. The terminal device can be a terminal, a network device, or a relay device. The communication device includes: a processor configured to determine a first reference frequency. For example, the first reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, a second parameter, and a first offset. For example, the first parameter is an offset used to calculate a second reference frequency, and the second parameter is an offset used to calculate the ARFCN. For example, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter. The first reference frequency is a reference frequency for a carrier used for environmental Internet of Things (IoT) communication. The processor is further configured to control a transceiver to communicate and send data to a second device based on the first reference frequency.
[0074] In one possible design, the granularity of the channel grid in the carrier's operating frequency band can be 10 kHz.
[0075] In one possible design, the first reference frequency is associated with a first parameter, global frequency grid granularity, ARFCN, a second parameter, and a first offset, and may include: the first reference frequency satisfying the following relationship, F AREF =F REF-Offs +ΔF Global (N REF -N REF-Offs )+Δ. For example, F AREF As the first reference frequency, F REF-Offs As the first parameter, ΔF Global For global frequency grid granularity, N REF For ARFCN, N REF-Offs The second parameter is Δ, and the first offset is ΔF. Global It can be 5kHz, N REF The step size can be 2.
[0076] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-Offs The value can be 0, N REF-Offs The value can be 0.
[0077] In one possible design, the first offset could be -7.5kHz or 2.5kHz.
[0078] In one possible design, the value of the first offset may include one or more of -7.5kHz, -2.5kHz, 2.5kHz, and 7.5kHz.
[0079] In one possible design, the communication device also includes a memory. This memory is used to store the necessary program instructions and data for the communication device.
[0080] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0081] In one possible design, the first reference frequency is the center frequency of the carrier wave.
[0082] In a tenth aspect, a communication device is provided. This communication device may be a first device, a communication module implementing the functions corresponding to the first device, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It may also be a logic module or software capable of implementing all or part of the functions of the first device. The terminal device may be a terminal, a network device, or a relay device. The communication device includes a processor configured to determine a second reference frequency. For example, the second reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, and a second parameter. For example, the first parameter is an offset used to calculate the second reference frequency, and the second parameter is an offset used to calculate the ARFCN. The second reference frequency is a reference frequency for a carrier used for environmental Internet of Things (IoT) communication. For example, the global frequency grid granularity may be 2.5 kHz. The processor is further configured to control a transceiver to send data to a second device based on the second reference frequency.
[0083] In one possible design, the granularity of the channel grid in the carrier's operating frequency band is 2.5 kHz.
[0084] In one possible design, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter, and may include: the second reference frequency satisfying the following relationship, F REF =F REF-Offs +ΔF Global (N REF -N REF-Offs For example, F REF For the second reference frequency, F REF-Offs As the first parameter, ΔF Global For global frequency grid granularity, N REF For ARFCN, N REF-Offs This is the second parameter. For example, N REF The step size can be 1.
[0085] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-Offs The value can be 0, N REF-Offs The value can be 0.
[0086] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0087] In one possible design, the second reference frequency is the center frequency of the carrier wave.
[0088] In one possible design, the communication device also includes a memory. This memory is used to store the necessary program instructions and data for the communication device.
[0089] Eleventhly, a communication device is provided, which is a second device, a communication module implementing the corresponding functions of the second device, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It can also be a logic module or software capable of implementing all or part of the functions of the second device. The terminal device can be a terminal or a network device. The communication device includes: a transceiver for receiving data from a first device on a first frequency band. The first frequency band includes a first reference frequency. For example, the first reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, a second parameter, and a first offset. For example, the first parameter is an offset used to calculate a second reference frequency, and the second parameter is an offset used to calculate the ARFCN. For example, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter. The aforementioned first reference frequency is a reference frequency for a carrier used for environmental Internet of Things (IoT) communication. A processor for detecting data.
[0090] In one possible design, the granularity of the channel grid in the carrier's operating frequency band can be 10 kHz.
[0091] In one possible design, the first reference frequency is associated with a first parameter, global frequency grid granularity, ARFCN, a second parameter, and a first offset, and may include: the first reference frequency satisfying the following relationship, F AREF =F REF-Offs +ΔF Global (N REF -N REF-Offs )+Δ. For example, F AREF As the first reference frequency, F REF-Offs As the first parameter, ΔF Global For global frequency grid granularity, N REF For ARFCN, N REF-Offs The second parameter is Δ, and the first offset is ΔF. Global It can be 5kHz, N REF The step value can be 2.
[0092] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-OffsThe value can be 0, N REF-Offs The value can be 0.
[0093] In one possible design, the first offset could be -7.5kHz or 2.5kHz.
[0094] In one possible design, the value of the first offset may include one or more of -7.5kHz, -2.5kHz, 2.5kHz, and 7.5kHz.
[0095] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0096] In one possible design, the second reference frequency is the center frequency of the carrier wave.
[0097] In one possible design, the communication device also includes a memory. This memory is used to store the necessary program instructions and data for the communication device.
[0098] In a twelfth aspect, a communication device is provided, which may be a second device, a communication module implementing the corresponding functions of the second device, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It may also be a logic module or software capable of implementing all or part of the functions of the second device. The terminal device may be a terminal or a network device. The communication device includes: a transceiver for receiving data from a first device on a first frequency band. The first frequency band includes a second reference frequency. For example, the second reference frequency is associated with a first parameter, a global frequency grid granularity, an ARFCN, and a second parameter. For example, the first parameter is an offset used to calculate the second reference frequency, and the second parameter is an offset used to calculate the ARFCN. The aforementioned second reference frequency is a reference frequency for a carrier used for environmental Internet of Things (IoT) communication. For example, the global frequency grid granularity is 2.5 kHz. A processing unit for detecting data.
[0099] In one possible design, the granularity of the channel grid in the carrier's operating frequency band is 2.5 kHz.
[0100] In one possible design, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter, and may include: the second reference frequency satisfying the following relationship, F REF =F REF-Offs +ΔF Global (N REF -N REF-OffsFor example, F REF For the second reference frequency, F REF-Offs As the first parameter, ΔF Global For global frequency grid granularity, N REF For ARFCN, N REF-Offs This is the second parameter. For example, N REF The step size can be 1.
[0101] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000MHz, N REF The value of F can range from 0 to 599999. REF-Offs The value can be 0, N REF-Offs The value can be 0.
[0102] In one possible design scheme, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, F REF-Offs For 3000, N REF-Offs It is 600,000.
[0103] In one possible design, the second reference frequency is the center frequency of the carrier wave.
[0104] In one possible design, the communication device also includes a memory. This memory is used to store the necessary program instructions and data for the communication device.
[0105] In a thirteenth aspect, a communication system is provided, comprising: a first device and a second device. The first device is configured to perform the methods described in the first aspect and its various possible implementations; or, the first device is configured to perform the methods described in the second aspect and its various possible implementations. The second device is configured to perform the methods described in the third aspect and its various possible implementations; or, the second device is configured to perform the methods described in the fourth aspect and its various possible implementations.
[0106] In a fourteenth aspect, a chip is provided, comprising interface circuitry and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of the necessary computer programs or instructions for implementing the functions described in the first, second, third, and fourth aspects. The one or more processors are capable of executing the computer programs or instructions, which, when executed, cause the communication device to implement the methods in any possible design or implementation of the first, second, third, and fourth aspects. The interface circuitry is used to implement communication functions within the communication device and / or communication functions between the communication device and other devices or components.
[0107] In a fifteenth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores computer instructions; when the computer instructions are executed on a computer, the computer causes the computer to perform a communication method as designed in any of the foregoing aspects.
[0108] In a sixteenth aspect, a computer program product is provided. The computer program product includes a computer program or instructions that, when executed on a computer, cause the computer to perform a communication method as designed in any of the foregoing aspects.
[0109] The beneficial effects of the methods in any of the second to sixteenth aspects mentioned above can be referred to the description of the beneficial effects of the methods in the first aspect, and will not be repeated here. Attached Figure Description
[0110] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;
[0111] Figure 2 is a schematic diagram of a communication scenario provided in an embodiment of this application;
[0112] Figure 3 is a schematic diagram of another communication scenario provided by an embodiment of this application;
[0113] Figure 4 is a schematic diagram of the location relationship of frequency domain resources provided in an embodiment of this application;
[0114] Figure 5 is a schematic diagram of a channel grid relationship provided in an embodiment of this application;
[0115] Figure 6 is a schematic diagram of another channel grid relationship provided in an embodiment of this application;
[0116] Figure 7 is a schematic diagram of a communication method provided in an embodiment of this application;
[0117] Figure 8 is a schematic diagram of the relationship between the center frequency of a channel grid and a filter provided in an embodiment of this application;
[0118] Figure 9 is a schematic diagram of a communication device provided in an embodiment of this application;
[0119] Figure 10 is a schematic diagram of another communication device provided in an embodiment of this application. Detailed Implementation
[0120] Figure 1 is a schematic diagram of the architecture of a communication system 1000 provided in an embodiment of this application. As shown in Figure 1, the communication system 1000 includes a radio access network (RAN) 100, wherein the RAN 100 includes at least one RAN node (110a and 110b in Figure 1, collectively referred to as 110), and may also include at least one terminal (120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices. The terminal 120 is wirelessly connected to the RAN node 110. Terminals and RAN nodes can be interconnected via wired or wireless means. The communication system 1000 may also include a core network 200. The RAN node 110 is connected to the core network 200 via wireless or wired means. The core network device in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or they may be the same physical device integrating the logical functions of the core network device and the logical functions of the RAN node. The communication system 1000 may also include the Internet 300.
[0121] RAN100 can be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, a future communications network, or a future radio access system as defined in the 3rd generation partnership project (3GPP). RAN100 can also include two or more of the above-mentioned different radio access systems. RAN100 can also be an open RAN (O-RAN).
[0122] RAN nodes, also known as radio access network devices, radio access network equipment, RAN entities, or access nodes, are used to help terminals access communication systems wirelessly. In one application scenario, an RAN node can be a base station (BS), an evolved NodeB (eNodeB / eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a base station in a future communication network, an access node in a WiFi system, or a non-terrestrial network device, i.e., a device or satellite that can be deployed on a low-altitude or high-altitude platform. RAN nodes can be macro base stations (as shown in Figure 1, 110a), micro base stations or indoor stations (as shown in Figure 1, 110b), relay nodes, or master nodes. In some examples, a TRP can also be called a transmission reception point.
[0123] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing different functions of the base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). An RU can also be called a radio frequency unit. Here, the CU performs the functions of the base station's radio resource control protocol and packet data convergence protocol (PDCP), and can also perform the functions of the service data adaptation protocol (SDAP). The DU performs the functions of the base station's radio link control layer and medium access control (MAC) layer, and can also perform some or all of the physical layer functions. For specific descriptions of these protocol layers, refer to the relevant 3GPP technical specifications. The RU can be used to implement radio frequency signal transmission and reception. The CU and DU can be two independent RAN nodes, or they can be integrated into the same RAN node, such as within a baseband unit (BBU). RUs can be included in radio frequency devices, such as remote radio units (RRUs) or active antenna units (AAUs). CUs can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.
[0124] In different systems, RAN nodes may have different names. For example, in an open radio access network (O-RAN) system, a CU can be called an open CU (O-CU), a DU can be called an open DU (O-DU), and an RU can be called an open RU (O-RU). The RAN nodes in the embodiments of this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules. For example, an RAN node can be a server loaded with the corresponding software modules. The embodiments of this application do not limit the specific technology or device form used in the RAN nodes. For ease of description, a base station is used as an example of a RAN node in the following description.
[0125] A terminal is a device with wireless transceiver capabilities, capable of sending signals to or receiving signals from a base station. Terminals can also be referred to as terminal equipment, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, and smart homes. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technology or device form used in the terminal. The terminal can also be a chip that includes modulation and demodulation functions (such as a baseband chip), a system-on-chip (SoC) that includes a modem module, or a system-in-package (SIP) chip.
[0126] In some examples, the core network 200 may include any core network device such as the access and mobility management function (AMF) entity, the session management function (SMF) entity, the user plane function (UPF) entity, the sensing service control function (SSCF), the sensing data processing function (SDPF), and the unified data management (UDM).
[0127] Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base stations and terminals.
[0128] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. For terminals 120j that access the wireless access network 100 through 120i, terminal 120i is a base station; however, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol. In this case, relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be called communication devices with base station functions, and 120a-120j in Figure 1 can be called communication devices with terminal functions.
[0129] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.
[0130] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.
[0131] In a wireless communication system, communication devices are included, and these devices can communicate wirelessly using air interface resources. The communication devices can include network equipment and terminals; network equipment can also be called base station equipment, i.e., the aforementioned wireless access network equipment. Air interface resources can include at least one of time-domain resources, frequency-domain resources, code resources, and spatial-domain resources. The communication equipment can also be referred to as a communication device.
[0132] The solutions provided in this application can be applied to wireless communication between communication devices. Wireless communication can include: wireless communication between network devices and terminals, wireless communication between network devices, and wireless communication between terminals. In this application, the term "wireless communication" can also be simply referred to as "communication," and the term "communication" can also be described as "data transmission," "information transmission," or "transmission."
[0133] In the era of second-generation (2G) and third-generation (3G) mobile communication systems, the concept of the Internet of Things (IoT) was not yet fully formed. 3GPP had already begun providing support for machine-to-machine (M2M) communication. By introducing General Packet Radio System (GPRS) and Enhanced Data Rates for Global System for Mobile Communications Evolution (EDGE) technologies, 3GPP provided basic network connectivity capabilities for early IoT applications, such as data collection. With the advent of 3G, the Universal Mobile Telecommunications System (UMTS) further improved data transmission rates, providing more stable and higher-speed network support for M2M communication.
[0134] With the deployment of the 4th generation (4G) long-term evolution (LTE) network, 3GPP officially incorporated the Internet of Things (IoT) into its standardization work as an important component in Release 13. In this release, 3GPP introduced two key low-power wide-area network (LPWAN) technologies: narrowband internet of things (NB-IoT) and enhanced machine-type communication (eMTC). For example, NB-IoT is suitable for low-bandwidth, low-power, high-connectivity scenarios, such as smart metering and environmental monitoring. eMTC, on the other hand, is suitable for IoT applications with medium data rate requirements, such as wearable devices. These two technologies greatly expand the application scenarios of IoT and promote the diversification and popularization of IoT terminals.
[0135] With the advent of the 5G era, 3GPP has taken significant strides in the innovation of IoT technology. Among these, the three major application scenarios of 5G include enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communication (URLLC). These three scenarios have set new standards for the development of IoT terminals. For example, mMTC can focus on millions of device connections per square kilometer; URLLC can focus on providing ultra-low latency and high reliability communication services. These all place new demands on the design and functionality of IoT terminals.
[0136] Driven by 5G standards, 3GPP has also introduced new technologies such as reduced capability (RedCap) (or 5G lightweight) and extended reduced capability (eRedCap) (or enhanced 5G lightweight) to meet the data transmission rate and functionality requirements of different IoT applications. RedCap and eRedCap fill the gap between NB-IoT, eMTC, and traditional 5G terminals, providing more flexible options for scenarios such as industrial automation and high-definition time and frequency transmission.
[0137] With the widespread adoption of MTC and IoT communication in 5G NR systems, an increasing number of IoT devices are being deployed in people's lives. Examples include smart water meters, shared bicycles, smart cities, environmental monitoring systems, smart homes, and forest fire prevention devices—all devices focused on sensing and data collection. In the future, IoT devices may be ubiquitous. For instance, they may be embedded in clothing, packages, keys, and even virtually all offline items may become online with the help of IoT technology.
[0138] However, the widespread distribution and sheer number of IoT devices present significant challenges to the industry in achieving ubiquitous connectivity. One of the most pressing challenges is powering these devices. Currently, IoT is primarily driven by telecom operators, and IoT devices need to communicate with network equipment using standard cellular protocols. Since network equipment needs to cover as large an area as possible, IoT devices must be able to communicate even at considerable distances. This results in IoT devices consuming substantial amounts of power during wireless communication, sometimes up to 30mA. Consequently, current IoT devices still require high-capacity batteries, hindering their miniaturization and increasing their cost.
[0139] It is understood that the terms IoT device, IoT apparatus, IoT module, and IoT terminal in this application have the same meaning.
[0140] Low-power devices play a crucial role in IoT applications such as medical devices, smart homes, industrial sensors, and wearables. However, due to the limited size of these devices, extending their runtime is difficult to achieve simply by increasing battery capacity. Therefore, extending battery life can be achieved by reducing the power consumption of wireless communication. Radio transceivers are among the most power-consuming components.
[0141] Therefore, in order to further popularize the Internet of Things (IoT), smaller IoT devices cannot be equipped with high-capacity batteries. Smaller batteries, or even eliminating battery limitations altogether, are needed, along with reduced power consumption of the radio transceiver, to overcome the limitations of cost, size, and power consumption in IoT devices.
[0142] In the 3GPP R18 standards discussions, low-power research became a focal point. Regarding low-power research, 3GPP provided a study on ambient power-enabled internet of things (IoT). This study primarily discussed use cases and requirements. In the 3GPP R19 standards discussions, 3GPP proposed a study on solutions for ambient internet of things in NR. These studies focused on low-power IoT device scenarios. Of course, these studies also do not preclude the application of low-power technologies in scenarios such as smartphones, extended reality (XR), and smart glasses that require low power consumption.
[0143] In some embodiments, the global frequency raster in an NR system defines a set of radio frequency (RF) reference frequencies, which can be denoted as F. REF This RF reference frequency can be used in signaling to identify the location of RF channels, synchronization signals, and physical broadcast channel blocks (SSBs), as well as other elements. For example, a global frequency grid could be defined for all frequencies from 0 to 100 GHz. The granularity of the global frequency grid can be denoted as ΔF. Global .
[0144] In some cases, for frequency ranges from 0 to 24250 MHz, the RF reference frequency can be specified by a new radio absolute radio frequency channel number (NR-ARFCN) ranging from 0 to 2016666 in the global frequency grid. For example, NR-ARFCN and F... REF The relationship between them can be seen in Equation 1. F REF =F REF-Offs +ΔF Global (N REF -N REF-Offs )
[0145] ...Formula 1
[0146] Where, N REFThat is, the aforementioned NR-ARFCN, F REF-Offs It can be considered as F REF Offset, N REF-Offs It can be considered as N REF Offset. For example, Table 1 shows the correspondence between various parameters.
[0147] Table 1
[0148] In some embodiments, the channel grid of an NR system defines a subset of RF reference frequencies, which can be used to identify the location of RF channels in the uplink (UL) and downlink (DL). The RF reference frequency of an RF channel can be mapped to a resource element on a carrier. For each operating frequency band, a subset of frequencies from the global frequency grid can be applied to that operating frequency band, forming a granularity of ΔF. Raster The channel grid. The ΔF Raster It can be greater than or equal to ΔF Global Taking the NR operating frequency band of a 100kHz channel grid as an example, ΔF Raster =20×ΔF Global For example, frequency band n1, frequency band n2, etc. The channel grid and applicable NR-ARFCN for each NR operating frequency band (or NR deployment frequency band) in the NR system can be found in relevant technical descriptions, which define the allowed N values for certain operating frequency bands. REF The embodiments in this application will not be described in detail.
[0149] Referring to Table 2, the channel grids for some possible frequency bands and the applicable NR-ARFCNs are shown.
[0150] Table 2
[0151] The step size can also be called the step value. That is, when determining N... REF During the numerical process, two adjacent N REF The interval between them is this step size. Assume channel grid A and channel grid B are two adjacent channel grids. Then, determine the N used for channel grid A. REF,1 The N used to determine the channel grid B REF,2 The difference between them can be the length corresponding to that step size. Taking Table 2 as an example, this N REF,1 With N REF,2 The difference is 20.
[0152] For channel grids and applicable NR-ARFCNs for other NR operating frequency bands, please refer to the relevant technologies; the embodiments in this application will not be described in detail here.
[0153] It is understandable that, based on Formula 1 above and in conjunction with Tables 1 and 2, the specific value of the RF reference frequency can be determined. The mapping between the positions of this RF reference frequency and its location in the frequency domain resources can be used to identify the location of the RF channel. This mapping depends on the total number of resource blocks (RBs) actually allocated in the channel. This mapping is applicable to both UL and DL. Table 3 provides one possible mapping relationship.
[0154] Table 3
[0155] Where, N RB n represents the total number of RBs within the transmission bandwidth (such as the maximum transmission bandwidth). PRB For N RB The index of the physical resource block (PRB) within the n, where k is n. PRB The corresponding resource element (RE) index within the PRB. This is expressed as rounded down. In some cases, the transmission bandwidth can be a partial bandwidth (BWP).
[0156] In some embodiments, to reduce communication power consumption, certain IoT devices provide an enhanced channel grid for the NR operating frequency band with a 100kHz channel grid. The granularity of this enhanced channel grid can still be denoted as ΔF. Raster However, it should be understood that in scenarios involving enhanced channel grids, ΔF Raster =2×ΔF Global It can still be applied to frequency bands n1, n2, etc. Refer to Table 4, which shows the channel grids for some possible frequency bands and the applicable NR-ARFCNs.
[0157] Table 4
[0158] In some examples, support for frequency bands n1, n2, n3, and n5 can be mandatory for the terminal. For channel grids and applicable NR-ARFCNs for other NR operating frequency bands, please refer to relevant technologies; these will not be elaborated upon in the embodiments of this application.
[0159] However, F is defined in NR REF ΔF Raster N REF Whether this is applicable to IoT scenarios in the surrounding environment requires further analysis. Furthermore, there is currently no definitive answer on how to determine the RF reference frequency location in such scenarios.
[0160] Therefore, embodiments of this application provide a communication method for determining a first reference frequency. This first reference frequency is associated with a first parameter related to the frequency range, a global frequency grid granularity, a new radio absolute radio frequency channel number (ARFCN), a second parameter related to the ARFCN range, and a first offset. By introducing this first offset, a filter centered at the first reference frequency can completely receive data used for IoT communication in the surrounding environment. This eliminates the need to increase the filter bandwidth, thus avoiding increased noise and interference and improving communication performance.
[0161] The communication method and apparatus will be further described below with reference to the accompanying drawings. It is understood that the embodiments of this application use a first device and a second device as examples of the execution subjects in the interactive illustration, but this application does not limit the execution subjects of the interactive illustration. The method executed by the first device in this application can also be implemented by modules in the first device (e.g., circuits, processors, chips, or chip systems), or by logic nodes, logic modules, or software that can implement all or part of the functions of the first device. Similarly, the method executed by the second device in this application can also be implemented by modules in the second device (e.g., circuits, processors, chips, or chip systems), or by logic nodes, logic modules, or software that can implement all or part of the functions of the second device.
[0162] Figure 2 is a schematic diagram of a communication scenario provided in an embodiment of this application.
[0163] This scenario can be a RAN (Radio Access Network) scenario, where the CU (Curricular Unit) and DU (Dedicated Unit) interact via a midhaul link, and the DU and RU (Remote Utility Unit) interact via a fronthaul link. In some scenarios, access network equipment can also be divided into baseband units (BBUs) and remote radio units (RRUs). A BBU can be considered to include the functions of both the CU and DU, and an RRU can be considered a RU. Access network equipment can interact with core network elements via backhaul links. Access network equipment interacts with at least one terminal via the air interface.
[0164] In some embodiments, the BBU and RU may or may not be co-located, and this application does not limit this.
[0165] In some embodiments, DU and RU may or may not be co-located. In some examples, DU and RU can cooperate to implement the functions of the physical (PHY) layer. A CU can be connected to one or more DUs, and a DU can be connected to one or more RUs.
[0166] In some examples, a CU may include a CU control plane (CP) and a CU user plane (UP), denoted as CU-CP and CU-UP. CU-CP implements the CU's control plane functions, while CU-UP implements the CU's user plane functions.
[0167] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meanings. For more specific implementations of CU, DU, RU, etc., and the protocol stack functions they execute, please refer to relevant technologies; the embodiments in this application will not be elaborated upon here.
[0168] Figure 3 is a schematic diagram of another communication scenario provided by an embodiment of this application.
[0169] The embodiments of this application can also be applied to O-RAN network architecture. Therefore, Figure 3 shows a schematic diagram of a scenario under the O-RAN architecture. In the O-RAN architecture, the access network equipment can be divided into three functional entities: O-RU, O-DU, and O-CU. The O-RU is similar to the aforementioned RU, the O-DU is similar to the aforementioned DU, and the O-CU is similar to the aforementioned CU. The interfaces between the functional entities can be referred to the descriptions of the aforementioned embodiments, and will not be repeated here. The O-RAN network architecture may also include a near-real-time RAN intelligent controller (RIC) and service management and orchestration (SMO).
[0170] The near real-time RIC is primarily used to collect network information and perform necessary optimization tasks. The near real-time RIC communicates with the O-CU and O-DU via the E2 interface. The near real-time RIC may include a QoS management module, a radio connection management module, an interference management module, and a mobility management module.
[0171] The SMO can include multiple functional modules, such as non-real-time RIC, configuration, policy, design, and inventory modules. The main functions of the SMO can include cloud infrastructure operation, administration, and maintenance (OAM). For example, it can operate, maintain, and manage cloud infrastructure through the O2 interface. The SMO can also operate, maintain, and manage the RAN through the O1 interface. The SMO can also include a non-real-time RIC, such as one that combines artificial intelligence (AI) and big data analytics to achieve non-real-time macro-control and intervention of the O-RAN through the A1 interface. Each functional entity in the O-RAN can function as an independent entity, communicating with the SMO independently using the O1 interface. In some examples, the SMO and near-real-time RIC can communicate via either the A1 or O1 interface; the appropriate communication path can be selected based on the specific circumstances, which will not be elaborated further in this embodiment.
[0172] In some embodiments, the duplexing mode of NR is the operating frequency band of frequency division duplex (FDD), supplementary downlink (SDL), supplementary uplink (SUL), and a portion of the operating frequency band of time division duplex (TDD), with ΔF Raster =20×ΔF Global This means the channel grid is 100kHz. For terminals supporting ambient IoT, acting as receivers, there is no high-precision, high-frequency local oscillator. Therefore, to reduce reception complexity, limited bandwidth is generally used for communication. For example, the bandwidth for ambient IoT communication can range from hundreds of kilohertz to several megahertz. Corresponding to NR frequency domain resources, the resources used for ambient IoT communication may occupy one or more RBs.
[0173] In some examples, the minimum bandwidth of a single RB in an NR system is 180kHz, corresponding to a subcarrier spacing (SCS) of 15kHz. Of course, in other examples, considering different subcarrier spacings, the bandwidth of a single RB can be (2... μ(×180)kHz. Here, μ is related to the subcarrier spacing. For example, when the subcarrier spacing is 15kHz, μ = 0; when the subcarrier spacing is 30kHz, μ = 1, and so on. For details, please refer to relevant technologies; the embodiments in this application will not be elaborated further.
[0174] For a 100kHz channel grid operating frequency band in NR, the resources for ambient environment IoT can be deployed within the transmission bandwidth of one NR carrier. Since the smallest granularity of NR resource scheduling in the frequency domain is one RB, when the resources for ambient environment IoT are deployed within the transmission bandwidth of one NR carrier, the carrier used for ambient environment IoT communication needs to be aligned with the resource block boundary of the NR carrier. Otherwise, incomplete RBs will be unusable for NR, resulting in resource fragmentation and reduced spectrum utilization efficiency.
[0175] Referring to Figure 4, it can be seen that the carrier used for IoT communication in the surrounding environment needs to be aligned with the RB boundary of the NR carrier.
[0176] Assuming the channel grid used for IoT communication in the surrounding environment still uses the 100kHz channel grid from NR, the mapping relationship from the channel grid to resource elements also follows the NR method. Referring to Figure 5, the carrier transmission bandwidth has two cases: an odd number of RBs and an even number of RBs. For example, an even number of RBs in the bandwidth can be represented by the number of RBs in the carrier mod 2 = 0; an odd number of RBs in the bandwidth can be represented by the number of RBs in the carrier mod 2 = 1. Assuming the RB boundaries are aligned, the resource element positions mapped by the channel grid differ in these two cases.
[0177] Referring to Figure 5, the number of RBs in the NR carrier transmission bandwidth can be odd or even. Similarly, the number of RBs in the carrier transmission bandwidth used for ambient environment IoT communication can also be odd or even. Therefore, there are four possible scenarios: all odd, all even, and one odd and one even. In Figure 5, each box represents an RB, and the arrows inside each RB indicate the center frequency of each subcarrier within that RB.
[0178] Assuming a subcarrier spacing of 15kHz, the frequency corresponding to the channel grid of the carrier used for ambient IoT communication is denoted as f. p Now, considering the situation shown in Figure 5, let's assume that the number of RBs for both transmission bandwidths is either odd or even. Let the center frequency of the NR carrier be a certain channel grid, denoted as k*100 (in kHz), and the bandwidth of one RB be 180 kHz. Also, let the center frequency of the carrier used for ambient IoT communication be a certain channel grid, denoted as n*100 (in kHz). Then, we can let f... p=k*100±m*180=n*100. Where k and n can be any integers. It can be determined that m has some possible values. Of course, m should be any integer. For the case where the number of RBs for the two transmission bandwidths is one odd and one even, we can let f... p =k*100±(m*180+90)=n*100. In this case, there are no possible integers m.
[0179] Please refer to Table 5 for details.
[0180] Table 5
[0181] As can be seen, the second row in Table 5 corresponds to the case where the number of RBs for both transmission bandwidths is odd; the third row corresponds to the case where the number of RBs in the NR carrier is odd, and the number of RBs in the carrier used for ambient environment IoT communication is even; the fourth row corresponds to the case where the number of RBs for both transmission bandwidths is even; and the fifth row corresponds to the case where the number of RBs in the NR carrier is even, and the number of RBs in the carrier used for ambient environment IoT communication is odd. It is clear that the location of the carrier used for ambient environment IoT communication is very limited and subject to certain restrictions.
[0182] For example, if the parity of the number of RBs for the two transmission bandwidths in the second and fourth rows is the same, there are a limited number of RB locations that can be used to deploy carriers for ambient IoT communication. For instance, m=0 indicates the center RB of the NR carrier transmission bandwidth, which can be used to deploy carriers for ambient IoT communication. Also, carriers for ambient IoT communication can only be deployed every 5 RBs to the left and right. As another example, if the parity of the number of RBs for the two transmission bandwidths in the third and fifth rows is inconsistent, it means that no location can be found within the NR self-destruction area to deploy carriers for ambient IoT communication.
[0183] In some examples, the determination method in Table 5 can still be used. To allow carriers for ambient IoT communication to be deployed at any RB location within the NR, these RB locations can be determined to have offsets of themselves, in integer multiples of 100 kHz, summing to {0, ±10, ±20, ±30, ±40, ±50} kHz. Alternatively, an equivalent implementation could be to set the channel grid for the carriers used for ambient IoT communication to 10 kHz.
[0184] Optionally, taking a channel grid of 10kHz for a carrier used for ambient IoT communication as an example, the number of RBs in the carrier can be odd or even. In the scenario of ambient IoT communication, assuming the center frequency of the filter at the transmitting end or the filter at the receiving end is aligned with the 10kHz channel grid, the bandwidth on the side with the lower center frequency of the filter is not consistent with the bandwidth on the side with the higher center frequency. Referring to Figure 6, it can be seen that the position of the channel grid in the frequency domain resources is determined according to the method shown in Table 3. When the number of RBs is odd, the frequency position of the channel grid is the 7th subcarrier of the center RB (e.g., subcarrier 6 if starting with subcarrier 0). When the number of RBs is even, the frequency position of the channel grid is the 1st subcarrier of the next RB after half the total number of RBs (e.g., subcarrier 0 if starting with subcarrier 0).
[0185] It can be seen that the frequency position of the channel grid is not the center frequency of the RB. This means that the frequency position of the channel grid divides the bandwidth of the carrier used for ambient IoT communication into two parts, one of which has a smaller bandwidth than the other. For the filter, if its center frequency is aligned with the channel grid frequency, and assuming half of the filter's bandwidth is the same as a smaller portion of the carrier bandwidth used for ambient IoT communication, then some data transmitted within that bandwidth will not be accurately received by the filter. Conversely, if half of the filter's bandwidth is the same as a larger portion of the carrier bandwidth used for ambient IoT communication, then the filter needs to be configured with a larger bandwidth. This will cause the filter to receive more noise, or more noise and interference, thus affecting its receiving performance.
[0186] The solutions involved in the embodiments of this application will be described in more detail below.
[0187] Figure 7 is a schematic diagram of a communication method provided by an embodiment of this application.
[0188] This communication process is applicable to, but not limited to, the communication scenarios shown in Figures 1 to 3. This method can be applied to LTE, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, 5G or NR systems, future communication systems (such as future communication systems), V2X (where V2X can include vehicle-to-network (V2N), vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), long-term evolution-vehicle (LTE-V), vehicle-to-everything (V2X), MTC, IoT, long-term evolution-machine (LTE-M), machine-to-machine (M2M), and D2D wireless communication scenarios. The method may include the following steps:
[0189] S101, the first device determines the first reference frequency or the second reference frequency.
[0190] In some embodiments, the first device can be a terminal or a network device. Correspondingly, the second device can be a terminal or a network device. For example, the first device may be a terminal and the second device may be a network device. Another example is that the first device is a network device and the second device is a terminal. Yet another example is that, in the case where the second device is a terminal, the first device can also be a relay device. For instance, the terminal can be a terminal supporting ambient IoT; correspondingly, the relay device can be a relay device supporting ambient IoT. In some examples, the terminal mentioned in the embodiments of this application can be an NR terminal, a RedCap terminal, or an eRedCap terminal.
[0191] In various embodiments of this application, the first device is the transmitting end and the second device is the receiving end.
[0192] In some examples, the first device can determine a first reference frequency. This first reference frequency can be a reference frequency of a carrier used for environmental IoT communication, such as the RF reference frequency of a carrier used for ambient environment IoT communication mentioned in the foregoing embodiments. That is, the communication scenario in this application embodiment can be a communication scenario for ambient environment IoT. For example, the first reference frequency can be associated with a first parameter, global frequency grid granularity, ARFCN, a second parameter, and a first offset. For example, the first parameter is used to calculate the second reference frequency (e.g., the second reference frequency can be the RF reference frequency mentioned in the foregoing embodiments). REF The offset used for calculating F REF For example, the second reference frequency is associated with the first parameter, the global frequency grid granularity (ARFCN), and the second parameter. The first parameter can be the F mentioned in the foregoing embodiments. REF-Offs For example, the global frequency grid granularity can be ΔF as mentioned in the aforementioned embodiments. Global For example, ARFCN can be the N mentioned in the aforementioned embodiments. REF In other words, the ARFCN can be an NG-ARFCN. Of course, in other examples, the ARFCN can also be an ARFCN defined in other communication scenarios, and this application does not limit this. For example, the second parameter can be the offset used for calculating the N-axis. REF For example, if the ARFCN value ranges from 0 to 599999, the second parameter can be 0. The second parameter can be N as mentioned in the previous embodiment. REF-Offs For example, the first offset can be denoted as Δ.
[0193] In some cases, the first reference frequency, associated with the first parameter, global frequency grid granularity, ARFCN, second parameter, and first offset, can satisfy the relationship reflected in Equation 2. AREF =F REF-Offs +ΔF Global (N REF -N REF-Offs )+Δ
[0194] ...Formula 2
[0195] Among them, F AREF This refers to the first reference frequency mentioned in the foregoing embodiments. In some examples, ΔF Global It can be 5kHz, N REF The step value can be 2.
[0196] It can be seen that Formula 2 can also be equivalent to a combination of Formula 1 and Formula 3, such as determining F through Formula 1. REF Then, combine with formula 3 to determine F. AREF F AREF =F REF +Δ
[0197] ...Formula 3
[0198] This application provides a specific method for determining the first reference frequency, thereby obtaining a reference frequency for communication. This ensures that the filter center frequency is consistent with the first reference frequency. Within a certain channel bandwidth, for the transmitting side, this avoids situations where the filter center and the actual bandwidth occupied by the signal are inconsistent, resulting in a small protection bandwidth on one side and a large protection bandwidth on the other. This prevents increased complexity in the transmitting side filter implementation. For the receiving side, this avoids configuring filters with larger bandwidths, thereby preventing the introduction of additional noise and interference and improving communication performance.
[0199] In some cases, when the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000 MHz, N in Equation 2 above... REF The value range of N can be from 0 to 599999. For example, N REF The value is taken in the range of 0 to 599999, with a step size of 2. Of course, N... REF The value can be 0 and / or 599999. For example, F... REF-Offs The value of N can be 0. REF-Offs The value of can be 0. For example, in N REF-Offs F REF-Offs When all values of are 0, Formula 2 can also be expressed as F AREF =ΔF Global N REF +Δ. Of course, any other equivalent formula transformations are within the protection scope of the embodiments of this application, and will not be listed one by one in the embodiments of this application.
[0200] This application provides value ranges for some parameters related to the first reference frequency to be applicable to communication scenarios with different frequency domain resources, thereby improving universality.
[0201] In some cases, when the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, N in Formula 2 above... REF The value range can be from 600,000 to 2,016,666. For example, N REFThe value is taken within the range of 600,000 to 2016,666, with a step size of 2. Of course, N... REF The allowed values are 600000 and / or 2016666. For example, F... REF-Offs The value of N can be 3000. REF-Offs The value can be 600000.
[0202] In some embodiments, the granularity of the channel grid in the operating frequency band of the carrier used for IoT communication in the surrounding environment can be 10 kHz.
[0203] The embodiments of this application can be applied to communication scenarios with a channel grid granularity of 10kHz, so that carriers used for ambient IoT in this scenario can be flexibly deployed within the NR transmission bandwidth, and resource block boundary alignment can be maintained.
[0204] In some embodiments, the first offset can be -7.5 kHz. Alternatively, the first offset can be 2.5 kHz.
[0205] For example, as shown in Figure 6, to ensure that the receiver's filter can completely receive the communication signal on the carrier used for ambient environment IoT communication, the center frequency of the filter can be aligned with the center frequency of the carrier used for ambient environment IoT communication. Referring to Figure 8, the position of the filter's center frequency is given for different cases where the number of RBs included in the carrier used for ambient environment IoT communication is odd or even.
[0206] It can be seen that there is a frequency offset between the filter center frequency and the channel grid frequency. This offset can be the aforementioned first offset. The first device, acting as the transmitter, can determine a first reference frequency for transmitting communication signals, which can be aligned with the filter center frequency. Therefore, the first reference frequency can be determined by the channel grid frequency and the first offset.
[0207] As shown in Figure 8, the center frequency of the filter (such as the first reference frequency) differs from the frequency of the channel grid in the figure by half a subcarrier. Taking a subcarrier spacing of 15kHz as an example, the bandwidth of half a subcarrier is 7.5kHz. Therefore, the center frequency of the filter (such as the first reference frequency) can be obtained by subtracting 7.5kHz from the frequency of the channel grid in the figure. In this case, the first offset can be considered as -7.5kHz.
[0208] Considering the channel grid granularity is 10kHz, the filter's center frequency (such as the first reference frequency) can also be determined by the channel grid to its left. Taking Figure 8 as an example, the channel grid to the left of the filter's center frequency (such as the first reference frequency) can be represented by (n-1)*10. Therefore, the filter's center frequency (such as the first reference frequency) can be obtained by adding 2.5kHz to (n-1)*10. In this case, the first offset can be considered as 2.5kHz. Of course, n-1 can also be replaced with other letters, such as u, w, etc., and this application does not limit this. For example, the value of n can be a positive integer, and the value of n-1 can be a non-negative integer.
[0209] It is understandable that the sum of the absolute values of the two different values of the first offset can be equal to the granularity of the channel grid.
[0210] In other examples, considering that the frequency offset can be an increase or a decrease of the first offset, the first offset could also be 7.5 kHz. For example, the first offset could also be -2.5 kHz.
[0211] It is understood that the first offset may include any one or more of 7.5kHz, -7.5kHz, -2.5kHz, and 2.5kHz. The specific first device can determine which first offset to use based on the actual situation, and this application embodiment does not limit it.
[0212] This application provides various selectable values for the first offset so that an accurate first reference frequency can be obtained based on the frequency of any possible channel grid, thereby improving communication performance.
[0213] It is understood that the parameters in the above embodiments can be referred to the contents described in Tables 1, 3, 4 and 5 above.
[0214] In other embodiments, considering the need to introduce additional parameters, namely a first offset, in the aforementioned embodiments, to better adapt to 5G communication systems, the first device can determine a second reference frequency. This second reference frequency can be a reference frequency of a carrier used for environmental IoT communication, such as the RF reference frequency of the carrier used for ambient environment IoT communication mentioned in the aforementioned embodiments. For example, the second reference frequency can be associated with a first parameter, global frequency grid granularity, ARFCN, and a second parameter. It is understood that the first parameter, global frequency grid granularity, ARFCN, and second parameter are similar to those in the aforementioned embodiments. The difference lies in the ΔF in this embodiment. Global It is 2.5kHz.
[0215] In some examples, the granularity of the channel grid in the operating frequency band of the carrier used for ambient environment IoT communication can be 2.5 kHz. That is, ΔF Raster =ΔF Global .
[0216] The embodiments of this application can be applied to communication scenarios with a channel grid granularity of 2.5kHz, so that carriers used for ambient IoT in this scenario can be flexibly deployed within the NR transmission bandwidth, and resource block boundary alignment can be maintained.
[0217] In some examples, the second reference frequency is associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter, as described in Equation 1 above. In other words, the second reference frequency can satisfy the relationship shown in Equation 1. The second reference frequency can be the F mentioned in the aforementioned embodiments. REF In this case, ΔF in Formula 1 Global 2.5kHz, N REF The step size can be 1.
[0218] This embodiment of the application increases the number of selectable positions for the channel grid by adjusting the values of some parameters without adjusting the reference frequency determination method. Therefore, it eliminates the need to introduce additional offsets, ensuring that the filter center frequency remains consistent with the first reference frequency. Within a certain channel bandwidth, for the transmitting side, it avoids situations where the center of the filter and the actual bandwidth occupied by the signal are inconsistent, resulting in a small protection bandwidth on one side and a large protection bandwidth on the other. This prevents increased complexity in the transmitting side filter implementation. For the receiving side, it avoids configuring filters with larger bandwidths, thereby preventing the introduction of additional noise and interference and improving communication performance.
[0219] It is understood that, for embodiments where the first offset is not required, the parameters can be referred to the contents described in Tables 1, 3, 4 and 5 above, unless otherwise specified.
[0220] S102, the first device sends data to the second device. Correspondingly, the second device receives data from the first device.
[0221] For example, the first device can communicate with the second device based on either the first reference frequency or the second reference frequency determined in S101. For instance, the first device may transmit data on frequency domain resources centered at the first reference frequency. Alternatively, the first device may transmit data on frequency domain resources centered at the second reference frequency. The first reference frequency can be considered as the center frequency of a carrier used for environmental IoT communication.
[0222] Accordingly, the second device can receive data from the first device within the first frequency band. This first frequency band may include the aforementioned first reference frequency. This means the second device can receive data transmitted over frequency domain resources centered at the first reference frequency.
[0223] S103, Second equipment test data.
[0224] For example, the second device can process the data received in S102 accordingly, such as demodulating or restoring it to obtain the original data. Specific implementation details can be found in related technologies, and will not be elaborated further in this application.
[0225] This application embodiment can determine a first reference frequency. This first reference frequency is associated with a first parameter related to the frequency range, global frequency grid granularity, ARFCN, a second parameter related to the ARFCN range, and a first offset. By introducing this first offset, the filter center frequency can be kept consistent with the first reference frequency, ensuring complete reception of data used for IoT communication in the surrounding environment. Within a certain channel bandwidth, for the transmitting side, this avoids the problem of a small protection bandwidth on one side and a large protection bandwidth on the other due to the inconsistency between the filter center and the actual bandwidth occupied by the signal. This prevents increased complexity in the transmitting side filter implementation. For the receiving side, there is no need to increase the filter bandwidth, thus avoiding receiving more noise and interference due to increased filter bandwidth, and improving communication performance.
[0226] This application embodiment can determine a second reference frequency. This second reference frequency is associated with a first parameter related to the frequency range, the global frequency grid granularity, the ARFCN, and a second parameter related to the ARFCN range. By adjusting the global frequency grid granularity, without introducing additional offsets, the filter center frequency and the second reference frequency can be kept consistent, ensuring complete reception of data used for IoT communication in the surrounding environment. Within a certain channel bandwidth, for the transmitting side, this avoids the problem of a small protection bandwidth on one side and a large protection bandwidth on the other due to a mismatch between the filter center and the actual bandwidth occupied by the signal. This prevents increased complexity in the transmitting side filter implementation. For the receiving side, there is no need to increase the filter bandwidth, thus avoiding receiving more noise and interference due to increased filter bandwidth, and improving communication performance.
[0227] In some embodiments, the first device may determine a first reference frequency or a second reference frequency based on the parameters mentioned in the foregoing examples. One possibility is that the first device determines the frequency itself, such as by configuring the values of the corresponding parameters within the first device. Another possibility is that the first device receives configuration information sent by other devices, which indicates the values of the corresponding parameters. Alternatively, the configuration information may directly indicate the first or second reference frequency; this embodiment does not limit the scope of the application. For example, the other devices may be the second device or any device other than the second device.
[0228] In some cases, the first device is a relay device. This relay device can receive configuration information sent by network devices.
[0229] In this embodiment, the channel grid for the carrier used for ambient environment IoT communication is 10kHz, allowing the carrier for ambient environment IoT communication to be deployed at any RB position within the NR carrier. The frequency position of the carrier used for ambient environment IoT communication can have an offset value (i.e., a first offset) compared to the 10kHz channel grid, ensuring that the bandwidth on the side with the lower center frequency of the filter is the same as that on the side with the higher center frequency. This avoids the performance degradation problem caused by inconsistent bandwidth on both sides of the filter center.
[0230] It is understood that each of the above embodiments of this application can be implemented independently or in combination with each other; there is no absolute subordinate relationship between the embodiments, and they can be combined with each other under any conditions to obtain the corresponding effect.
[0231] It is understood that, in order to achieve the functions in the above embodiments, the terminal and network device include hardware structures and / or software modules corresponding to perform each function. Those skilled in the art should readily recognize that, based on the units and method steps described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.
[0232] Figures 9 and 10 are schematic diagrams of possible communication devices provided in embodiments of this application. The communication device may include modules or units for implementing the solutions in the above method embodiments. These communication devices can be used to implement the functions of the first or second device in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments. In embodiments of this application, the communication device may be the RAN node 110 shown in Figure 1, wherein the RAN node may also be referred to as an access network device, network device, or network apparatus. The communication device may also be a module (such as a chip) applied to a network device. The communication device may also be the terminal 120 shown in Figure 1. The communication device may also be a module (such as a chip) applied to the terminal.
[0233] In this embodiment of the application, the device for implementing the terminal's functions can be a terminal device or a device capable of supporting the terminal in implementing those functions, such as a chip system. This device can be installed in the terminal or used in conjunction with the terminal. Similarly, in this embodiment of the application, the device for implementing the network device's functions can be a network device or a device capable of supporting the network device in implementing those functions, such as a chip system. This device can be installed in the network device or used in conjunction with the network device.
[0234] In this embodiment of the application, the chip system may be composed of chips, or it may include chips and other discrete devices.
[0235] As shown in Figure 9, the communication device 900 includes a processing unit 910 and a transceiver unit 920. The communication device 900 is used to implement the functions of the first device and the second device in the method embodiment shown in Figure 7 above.
[0236] When the communication device 900 is used to implement the function of the first device in the method embodiment shown in FIG7: the processing unit 910 is used to determine a first reference frequency or a second reference frequency. The processing unit 910 is also used to control the transceiver unit 920 to send data to the second device based on the first reference frequency or the second reference frequency.
[0237] When the communication device 900 is used to implement the function of the second device in the method embodiment shown in FIG7: the transceiver unit 920 is used to receive data from the first device on the first frequency band. The processing unit 910 is used to detect the data.
[0238] For a more detailed description of the processing unit 910 and the transceiver unit 920 described above, please refer to the relevant description of the method embodiment shown in FIG7.
[0239] As shown in Figure 10, the communication device 1000 includes a processor 1010 and an interface circuit 1020. The processor 1010 and the interface circuit 1020 are coupled to each other. It is understood that the interface circuit 1020 can be a transceiver or an input / output interface. Optionally, the communication device 1000 may also include a memory 1030 for storing instructions executed by the processor 1010, or storing input data required by the processor 1010 to execute instructions, or storing data generated after the processor 1010 executes instructions. Sometimes, the interface circuit 1020 can also be understood as part of the processor 1010, in which case the communication device 1000 includes the processor 1010.
[0240] When the communication device 1000 is used to implement the method shown in FIG7, the processor 1010 is used to implement the function of the processing unit 910, and the interface circuit 1020 is used to implement the function of the transceiver unit 920.
[0241] When the aforementioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above method embodiments. The terminal chip receives information from the network device, which can be understood as the information being first received by other modules (such as an RF module or antenna) in the terminal, and then sent to the terminal chip by these modules. The terminal chip sends information to the network device, which can be understood as the information being sent down to other modules (such as an RF module or antenna) in the network device, and then sent back to the network device by these modules.
[0242] When the aforementioned communication device is a chip used in a network device, the network device chip implements the functions of the network device in the above method embodiments. The network device chip receives information from the terminal, which can be understood as the information being first received by other modules (such as an RF module or antenna) in the network device, and then sent to the network device chip by these modules. The network device chip sends information to the terminal, which can be understood as the information being sent down to other modules (such as an RF module or antenna) in the terminal, and then sent back to the terminal by these modules.
[0243] In this application, entity A sends information to entity B, either directly or indirectly through other entities. Similarly, entity B receives information from entity A, either directly or indirectly through other entities. Entities A and B can be RAN nodes or terminal devices, or modules within RAN nodes or terminal devices. Information transmission and reception can be between RAN nodes and terminal devices, such as between a base station and a terminal device; between two RAN nodes, such as between a CU and a DU; or between different modules within a single device, such as between a terminal device chip and other modules of the terminal device, or between a base station chip and other modules of the base station.
[0244] It is understood that the processor in the embodiments of this application can be a central processing unit (CPU), or one or more of other general-purpose processors, digital signal processors (DSPs), microprocessor units (MPUs), microcontroller units (MCUs), graphics processing units (GPUs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), artificial intelligence processors (AI processors), or neural processing units (NPUs); or, the processor mentioned in the embodiments of this application can be application-specific integrated circuits (ASICs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components (or parts), or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor, etc.
[0245] The method steps in the embodiments of this application can be implemented in hardware or in software instructions executable by a processor. The software instructions can consist of corresponding software modules, which can be stored in memory, such as volatile memory and / or non-volatile memory. The non-volatile memory can be flash memory, read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), or electrically erasable programmable read-only memory (EEPROM). The volatile memory can be a cache or random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes a variety of forms, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). The memory can also be in registers, hard disks, portable hard disks, compact disc (CD) ROMs, or any other form of storage medium well known in the art.
[0246] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) can be integrated into the processor. An exemplary storage medium is coupled to the processor, enabling the processor to read information from and write information to the storage medium. The storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Alternatively, the ASIC can reside in a base station or terminal device. The processor and storage medium can also exist as discrete components in a base station or terminal device.
[0247] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.
[0248] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.
[0249] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates an "or" relationship between the preceding and following related objects; in the formulas of this application, the character " / " indicates a "division" relationship between the preceding and following related objects. "Including at least one of A, B, and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B, and C.
[0250] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.
[0251] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
[0252] The terms "first" and "second," etc., used in the specification and drawings of the embodiments of this application are used to distinguish different objects or to distinguish different processing of the same object. The terms "first" and "second," etc., can distinguish identical or similar items with substantially the same function and effect. For example, "first device" and "second device" are merely to distinguish different devices and do not limit their order. Those skilled in the art will understand that the terms "first" and "second," etc., do not limit the quantity or execution order, and that "first" and "second," etc., do not necessarily imply that they are different.
[0253] Furthermore, the terms "comprising" and "having," and any variations thereof, used in the description of the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include other steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.
[0254] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner to facilitate understanding.
[0255] It is understood that the term "embodiment" used throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of the embodiments of this application. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It is understood that in the various embodiments of the embodiments of this application, the sequence number of each process does not imply the order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.
[0256] It is understood that in the embodiments of this application, "...when" and "if" both refer to the corresponding processing that will be carried out under certain objective circumstances, and are not limited to a time, nor do they require a judgment action during implementation, nor do they imply any other limitations.
[0257] It is understood that some optional features in the embodiments of this application can be implemented independently in certain scenarios without relying on other features, such as the current solution on which they are based, to solve the corresponding technical problems and achieve the corresponding effects. Alternatively, they can be combined with other features as needed in certain scenarios. Correspondingly, the apparatus given in the embodiments of this application can also implement these features or functions, which will not be elaborated here.
[0258] In the embodiments of this application, unless otherwise specified, the same or similar parts between the various embodiments can be referred to each other. In the various embodiments of this application, and in the various implementation methods / methods / implementations within each embodiment, unless otherwise specified or logically conflicting, the terminology and / or descriptions between different embodiments and between the various implementation methods / methods / implementations within each embodiment are consistent and can be mutually referenced. The technical features in different embodiments and the various implementation methods / methods / implementations within each embodiment can be combined to form new embodiments, implementation methods, methods, or implementation approaches based on their inherent logical relationships. The following descriptions of the embodiments of this application do not constitute a limitation on the scope of protection of the embodiments of this application.
Claims
1. A communication method, characterized in that, The method is applied to a first device, and the method includes: A first reference frequency is determined, wherein the first reference frequency is associated with a first parameter, a global frequency grid granularity, an absolute radio frequency channel number (ARFCN), a second parameter, and a first offset, the first parameter being an offset used to calculate a second reference frequency, the second parameter being an offset used to calculate the ARFCN, the second reference frequency being associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter, and the first reference frequency being a reference frequency for a carrier used for environmental IoT communication; Data is sent to the second device based on the first reference frequency.
2. The method according to claim 1, characterized in that, The granularity of the channel grid in the operating frequency band of the carrier is 10 kHz.
3. The method according to claim 1 or 2, characterized in that, The first reference frequency is associated with a first parameter, global frequency grid granularity, ARFCN, a second parameter, and a first offset, including: the first reference frequency satisfies the following relationship, F AREF =F REF-Offs +ΔF Global (N REF -N REF-Offs )+Δ; Wherein, the F AREF For the first reference frequency, the F REF-Offs For the first parameter, the ΔF Global For the global frequency grid granularity, N REF For the ARFCN, the N REF-Offs The second parameter is Δ, the first offset is ΔF. Global The N is 5kHz. REF The step size is 2.
4. The method according to claim 3, characterized in that, When the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000 MHz, the N REF The value range of F is from 0 to 599999. REF-Offs The value of N is 0. REF-Offs The value is 0.
5. The method according to any one of claims 1-4, characterized in that, The first offset is either -7.5kHz or 2.5kHz.
6. The method according to claim 3, characterized in that, When the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, the F REF-Offs The value is 3000, and the N is... REF-Offs It is 600,000.
7. The method according to any one of claims 1-6, characterized in that, The first reference frequency is the center frequency of the carrier.
8. A communication method, characterized in that, The method is applied to a first device, and the method includes: A second reference frequency is determined, wherein the second reference frequency is associated with a first parameter, a global frequency grid granularity, an absolute radio frequency channel number (ARFCN), and a second parameter, wherein the first parameter is an offset for calculating the second reference frequency, the second parameter is an offset for calculating the ARFCN, the second reference frequency is a reference frequency for a carrier used for environmental IoT communication, and the global frequency grid granularity is 2.5 kHz. Data is sent to the second device based on the second reference frequency.
9. The method according to claim 8, characterized in that, The granularity of the channel grid in the operating frequency band of the carrier is 2.5 kHz.
10. The method according to claim 8 or 9, characterized in that, The second reference frequency is associated with the first parameter, global frequency grid granularity, ARFCN, and the second parameter, including: the second reference frequency satisfies the following relationship, F REF =F REF-Offs +ΔF Global (N REF -N REF-Offs ); Wherein, the F REF For the second reference frequency, the F REF-Offs For the first parameter, the ΔF Global For the global frequency grid granularity, N REF For the ARFCN, the N REF-Offs For the second parameter, N REF The step size is 1.
11. The method according to claim 10, characterized in that, When the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000 MHz, the N REF The value range of F is from 0 to 599999. REF-Offs The value of N is 0. REF-Offs The value is 0.
12. The method according to claim 10, characterized in that, When the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, the F REF-Offs The value is 3000, and the N is... REF-Offs It is 600,000.
13. The method according to any one of claims 8-12, characterized in that, The second reference frequency is the center frequency of the carrier.
14. A communication method, characterized in that, The method is applied to a second device, and the method includes: Data is received from a first device in a first frequency band, the first frequency band including a first reference frequency, wherein the first reference frequency is associated with a first parameter, a global frequency grid granularity, an absolute radio frequency channel number (ARFCN), a second parameter, and a first offset, the first parameter being an offset for calculating a second reference frequency, the second parameter being an offset for calculating the ARFCN, the second reference frequency being associated with the first parameter, the global frequency grid granularity, the ARFCN, and the second parameter, and the first reference frequency being a reference frequency for a carrier used for environmental IoT communication; Detect the data.
15. The method according to claim 14, characterized in that, The granularity of the channel grid in the operating frequency band of the carrier is 10 kHz.
16. The method according to claim 14 or 15, characterized in that, The first reference frequency is associated with a first parameter, global frequency grid granularity, ARFCN, a second parameter, and a first offset, including: the first reference frequency satisfies the following relationship, F AREF =F REF-Offs +ΔF Global (N REF -N REF-Offs )+Δ; Wherein, the F AREF For the first reference frequency, the F REF-Offs For the first parameter, the ΔF Global For the global frequency grid granularity, N REF For the ARFCN, the N REF-Offs The second parameter is Δ, the first offset is ΔF. Global The N is 5kHz. REF The step size is 2.
17. The method according to claim 16, characterized in that, When the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000 MHz, the N REF The value range of F is from 0 to 599999. REF-Offs The value of N is 0. REF-Offs The value is 0.
18. The method according to any one of claims 14-17, characterized in that, The first offset is either -7.5kHz or 2.5kHz.
19. The method according to claim 16, characterized in that, When the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, the F REF-Offs The value is 3000, and the N is... REF-Offs It is 600,000.
20. The method according to any one of claims 14-19, characterized in that, The first reference frequency is the center frequency of the carrier.
21. A communication method, characterized in that, The method is applied to a second device, and the method includes: Data is received from a first device on a first frequency band, the first frequency band including a second reference frequency, wherein the second reference frequency is associated with a first parameter, a global frequency grid granularity, an absolute radio frequency channel number (ARFCN), and a second parameter, the first parameter being an offset for calculating the second reference frequency, the second parameter being an offset for calculating the ARFCN, the second reference frequency being a reference frequency for a carrier used for environmental IoT communication, and the global frequency grid granularity being 2.5 kHz; Detect the data.
22. The method according to claim 21, characterized in that, The granularity of the channel grid in the operating frequency band of the carrier is 2.5 kHz.
23. The method according to claim 21 or 22, characterized in that, The second reference frequency is associated with the first parameter, global frequency grid granularity, ARFCN, and the second parameter, including: the second reference frequency satisfies the following relationship, F REF =F REF-Offs +ΔF Global (N REF -N REF-Offs ); Wherein, the F REF For the second reference frequency, the F REF-Offs For the first parameter, the ΔF Global For the global frequency grid granularity, N REF For the ARFCN, the N REF-Offs For the second parameter, N REF The step size is 1.
24. The method according to claim 23, characterized in that, When the operating frequency band of the carrier corresponds to a frequency range of 0 to 3000 MHz, the N REF The value range of F is from 0 to 599999. REF-Offs The value of N is 0. REF-Offs The value is 0.
25. The method according to claim 23, characterized in that, When the operating frequency band of the carrier corresponds to a frequency range of 3000MHz to 24250MHz, the F REF-Offs The value is 3000, and the N is... REF-Offs It is 600,000.
26. The method according to any one of claims 21-25, characterized in that, The second reference frequency is the center frequency of the carrier.
27. A communication device, characterized in that, Includes a module for performing the method according to any one of claims 1-26.
28. A communication device, characterized in that, The device includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices and transmit them to the processor or to send signals from the processor to other communication devices, and the processor is used to implement the method as described in any one of claims 1-26 through logic circuits, executable code and / or instructions.
29. The apparatus according to claim 28, characterized in that, The device further includes a memory for storing the code or instructions.
30. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method as described in any one of claims 1-26.
31. A computer program product, comprising a computer program or instructions, characterized in that, When the computer program or instructions are executed by the communication device, they implement the method as described in any one of claims 1-26.