WO2023143548A1 - 通信方法、装置、设备以及存储介质 - Google Patents

通信方法、装置、设备以及存储介质 Download PDF

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Publication number
WO2023143548A1
WO2023143548A1 PCT/CN2023/073651 CN2023073651W WO2023143548A1 WO 2023143548 A1 WO2023143548 A1 WO 2023143548A1 CN 2023073651 W CN2023073651 W CN 2023073651W WO 2023143548 A1 WO2023143548 A1 WO 2023143548A1
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WIPO (PCT)
Prior art keywords
frequency unit
frequency
uplink
downlink
offset
Prior art date
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Application number
PCT/CN2023/073651
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English (en)
French (fr)
Inventor
罗之虎
吴毅凌
刘烈海
金哲
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to JP2024544974A priority Critical patent/JP7832342B2/ja
Priority to EP23746425.0A priority patent/EP4451774A4/en
Publication of WO2023143548A1 publication Critical patent/WO2023143548A1/zh
Priority to US18/788,150 priority patent/US20240388407A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present application relates to the technical field of communication, and in particular, to a communication method, device, device and storage medium.
  • MTC machine-type communication
  • IoT Internet of Things
  • RFID radio frequency identification
  • WUR wake-up receiver/wake-up radio
  • the communication method, device, device, and storage medium provided in the embodiments of the present application provide a solution for how to determine a frequency unit for inter-device communication.
  • an embodiment of the present application provides a communication method, the method comprising: a first device determines a first frequency unit; the first device communicates with a second device on the first frequency unit; wherein, the first The granularity of the first channel grid corresponding to the frequency unit is smaller than or equal to the granularity of the second channel grid corresponding to the second frequency unit, the second frequency unit is used for communication between the first device and the third device, and the first frequency unit and The second frequency domain unit is located in the same working frequency band.
  • the first frequency unit used for communication between the first device and the second device is determined, and the first frequency unit is used for the first device and the third device.
  • the second frequency unit where the device communicates is located in the same working frequency band, and the granularity of the first channel grid corresponding to the first frequency unit is smaller than or equal to the granularity of the second channel grid.
  • the embodiment of the present application provides a solution for determining the frequency unit, so that the first device and the second device can communicate through the first frequency unit; on the other hand, when determining the frequency unit, the channel grid The granularity of the first channel grid corresponding to the first frequency unit can be set smaller, thereby improving the flexibility of deployment of the first frequency unit.
  • the communication between the first device and other devices may be sending signals or receiving signals.
  • the frequency position of the first channel grid in the first frequency unit corresponds to the frequency position of a resource element in the first frequency unit, and the index of the resource element in the frequency domain is based on the The transmission bandwidth of the first frequency unit or the transmission bandwidth of the second frequency unit is determined.
  • the first device determines the resource element corresponding to the first channel grid The frequency position of the element.
  • the resource block of the first frequency unit is aligned with the resource block boundary of the second frequency unit, or the subcarrier of the first frequency unit is aligned with the subcarrier boundary of the second frequency unit .
  • the RBs of the first frequency unit should be aligned with the RB boundaries of the second frequency unit to avoid resource fragmentation and reduce spectrum utilization efficiency; the subcarriers of the first frequency unit can be aligned with the RBs of the second frequency unit Subcarrier boundaries are aligned to avoid interference to data transmission within the transmission bandwidth of the second frequency unit due to subcarrier non-orthogonality.
  • the first frequency unit is included in the transmission bandwidth of the second frequency unit, and the resource block of the first frequency unit is aligned with the resource block boundary of the second frequency unit; or, the second frequency unit A frequency unit is included in the guard band of the second frequency unit, and the subcarriers of the first frequency unit are aligned with the subcarrier boundaries of the second frequency unit; or, the first frequency unit is not included in the second frequency unit , the frequency domain interval between the first frequency unit and the second frequency unit is smaller than a threshold, and the subcarriers of the first frequency unit are aligned with the subcarrier boundaries of the second frequency unit.
  • the RBs of the first frequency unit should be aligned with the RB boundaries of the second frequency unit, which can avoid resource fragmentation, Reduce the efficiency of spectrum use; and when the first frequency unit is not included in the transmission bandwidth of the second frequency unit, the subcarriers of the first frequency unit can be aligned with the subcarrier boundaries of the second frequency unit, which can avoid factor carrier errors Interference causes interference to data transmission within the transmission bandwidth of the second frequency unit.
  • the granularity of the first channel grid is determined according to at least one of the following: a deployment mode of the first frequency unit; and a subcarrier spacing of the first frequency unit.
  • the granularity of the first channel grid is determined according to the deployment mode of the first frequency unit and/or the subcarrier spacing of the first frequency unit, so that the granularity of the first channel grid can be applied to the current
  • the granularity of the first channel grid does not need to be set too small under the condition that the flexibility of the deployment of the first frequency unit is satisfied.
  • the granularity of the second channel grid is 100 kHz, and the granularity of the first channel grid is an integer multiple of 5 kHz, 10 kHz or 20 kHz.
  • the flexibility of deploying the first frequency unit can be improved.
  • the radio frequency reference frequency is determined based on the above offset, so as to realize the determination of the smaller first channel grid granularity, and improve the flexibility of the deployment of the first frequency unit.
  • the first frequency unit includes an uplink frequency unit for transmitting uplink signals, and/or, a downlink frequency unit for transmitting downlink signals; the first device determines the first frequency unit, including : The first device determines the uplink frequency unit according to the uplink frequency position and the uplink offset; and/or, the first device determines the downlink frequency domain unit according to the downlink frequency position and the downlink offset; the first device determine the first frequency Before the unit, it includes: the first device according to the frequency band type of the downlink frequency unit, the first capability of the second device, the type of the second device, the time domain resource type of the signal carried by the downlink frequency unit, the At least one of the time-domain resource types where the signal carried by the uplink frequency unit is located, determine the uplink offset and/or the downlink offset, wherein the first capability is whether to support frequency shifting of the uplink signal to the An uplink transmission frequency band other than the downlink transmission frequency band where the downlink frequency unit is located.
  • the first device determines the first frequency unit according to the uplink offset and/or the downlink offset, and avoids subcarriers of the first frequency unit from being different from subcarriers of other communication systems (such as the LTE system). Carrier boundaries are not aligned (that is, sub-carriers are not orthogonal), resulting in mutual interference of data transmitted between communication systems.
  • the downlink frequency unit is located in the downlink transmission frequency band, the first capability is to support frequency shifting of the uplink signal to an uplink transmission frequency band outside the downlink transmission frequency band, and the uplink offset is the first A value or a second value; or, the first capability does not support frequency shifting of the uplink signal to an uplink transmission frequency band other than the downlink transmission frequency band, and the uplink offset is the first value; or, the downlink frequency The unit is located in the uplink transmission frequency band, and the downlink offset and the uplink offset are both the first value or the second value.
  • the second device when the second device supports moving the uplink signal to the uplink transmission frequency band, it may be in the same transmission frequency band as the uplink carrier of other communication systems (such as the LTE system). In this case, it is necessary to determine the uplink offset.
  • the offset is the second value (that is, the first frequency unit needs to be shifted) or the first value (that is, the first frequency unit does not need to be shifted), so as to avoid misalignment of subcarrier boundaries between the two.
  • the downlink transmission frequency band and the uplink transmission frequency band are located in the same working frequency band.
  • the communication method provided by this embodiment is more suitable for determining the uplink offset and/or the downlink offset in the FDD mode.
  • the downlink transmission frequency band and the uplink transmission frequency band are located in different working frequency bands.
  • the uplink offset and/or the downlink offset are determined.
  • the uplink transmission frequency band is used for LTE uplink communication, and the uplink offset is a second value; or, the uplink transmission frequency band is not used for LTE uplink communication, and the uplink offset is a first value .
  • the first frequency unit needs to be offset to achieve alignment with the subcarrier boundary of the frequency unit of the LTE system, and the uplink transmission frequency band is not used for LTE uplink communication
  • the uplink transmission frequency band is not used for LTE uplink communication
  • the first frequency unit is located in the TDD operating frequency band
  • the downlink signal occupies downlink time domain resources
  • the uplink signal occupies uplink time domain resources
  • the downlink offset and the uplink offset are both is the first value or the second value
  • the downlink signal and the uplink signal both occupy downlink time domain resources, and the downlink offset and the uplink offset are both the first value
  • the downlink signal and the uplink signal both Occupying uplink time domain resources, the downlink offset and the uplink offset are both the first value or the second value.
  • the uplink signal carried by the uplink frequency unit and the uplink signal of other communication systems may both be transmitted on the uplink time domain resources, it is necessary to further determine whether the first frequency unit needs to be based on The uplink/downlink offset performs frequency offset to avoid misalignment of subcarrier boundaries between the first frequency unit and frequency units of other communication systems.
  • the uplink time domain resource is used for LTE uplink communication, and the downlink offset and the uplink offset are a second value; or, the uplink time domain resource is not used for LTE uplink communication, the The downlink offset and the uplink offset are first values.
  • the first frequency unit needs to perform frequency offset based on the uplink/downlink offset to avoid the first frequency unit and the LTE frequency unit
  • the subcarrier boundaries are not aligned, otherwise no frequency offset is required.
  • the first value is 0, and the second value is 7.5kHz.
  • the uplink offset/downlink offset is 0, which means that the first frequency unit does not need to be offset based on the uplink offset/downlink offset; the first frequency unit does not need to be based on
  • the uplink offset/downlink offset is offset, the uplink offset/downlink offset is 7.5 kHz to ensure that the first frequency unit is aligned with the subcarrier boundary of the LTE system.
  • the method further includes: the first device receiving first configuration information, where the first configuration information is used to indicate one of the following: the uplink offset; the downlink offset; the downlink The frequency domain interval between the frequency position and the uplink frequency position.
  • the system overhead of the first device is reduced.
  • the second frequency unit is located in the uplink transmission frequency band, the uplink frequency unit in the first frequency unit is located in the transmission bandwidth of the second frequency unit, and the downlink frequency unit in the first frequency unit Located in the guard band of the second frequency unit; or, the second frequency unit is located in the downlink transmission frequency band, the downlink frequency unit is located in the transmission bandwidth of the second frequency unit, and the uplink frequency unit is located in the guard band of the second frequency unit In-band; or, the first frequency unit is located in the TDD working frequency band, the downlink signal transmitted by the downlink frequency unit and the uplink signal corresponding to the downlink signal transmitted by the uplink frequency unit both occupy downlink time domain resources, and the downlink frequency unit is located in Within the transmission bandwidth of the second frequency unit, the uplink frequency unit is located within the guard band of the second frequency unit; or, the first frequency unit is located in the TDD operating frequency band, the downlink signal transmitted by the downlink frequency unit and the uplink frequency unit The transmitted uplink signals corresponding to the downlink
  • the downlink frequency unit and uplink frequency unit in the first frequency unit are respectively deployed in the transmission bandwidth or guard band of the second frequency unit , to avoid the problem of signal interference caused by the first frequency unit and the second frequency unit due to different directions of transmission and reception.
  • the method further includes: the first device sends first configuration information to the second device, where the first configuration information is used to indicate at least one of the following: the uplink offset; the downlink The frequency domain interval between the frequency position and the uplink frequency position; the uplink frequency unit.
  • the flexible configuration of the first device to the second device can be realized, while reducing the system overhead of the second device; on the other hand, the first device provides the second device with its own capabilities An undeterminable parameter to facilitate communication between the second device and the first device.
  • an embodiment of the present application provides a communication device, and the communication device can perform the steps in the first aspect above.
  • the communication device may include: a processing unit, configured to determine a first frequency unit; a transceiver unit, configured to communicate with a second device on the first frequency unit; wherein, the first frequency unit corresponds to The granularity of the first channel grid is smaller than or equal to the granularity of the second channel grid corresponding to the second frequency unit, the second frequency unit is used for communication between the communication device and the third device, and the first frequency unit is connected to the second frequency unit.
  • the frequency domain units are located in the same working frequency band.
  • an embodiment of the present application provides a communication device, including: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and perform the communication as described in the first aspect or methods in each possible implementation.
  • an embodiment of the present application provides a chip, including: a processor, configured to call and execute computer instructions from a memory, so that a device equipped with the chip executes the method in the first aspect or in each possible implementation manner .
  • an embodiment of the present application provides a computer-readable storage medium for storing computer program instructions, and the computer program causes a computer to execute the method in the first aspect or in each possible implementation manner.
  • an embodiment of the present application provides a computer program product, including computer program instructions, where the computer program instructions cause a computer to execute the method in the first aspect or in each possible implementation manner.
  • Fig. 1 shows a kind of communication system applicable to the embodiment of the present application
  • FIG. 2a is a schematic diagram of an RFID communication system provided by the present application.
  • Figure 2b is a schematic diagram of a separate architecture RFID communication system provided by the present application.
  • FIG. 2c is a schematic diagram of a centralized RFID communication system provided by the present application.
  • Figure 3a is a schematic diagram of a WUR communication provided by the present application.
  • FIG. 3b is a schematic diagram of another WUR communication provided by the present application.
  • Fig. 4 is a schematic diagram of envelope detection provided by the present application.
  • FIG. 5 is a schematic diagram of a reflective communication provided by the present application.
  • FIG. 6 is a schematic diagram of a common resource block provided by the present application.
  • FIG. 7 is a schematic diagram of a frequency-domain positional relationship between a partial bandwidth and a carrier provided by the present application.
  • FIG. 8 is a schematic diagram of an interaction process of a communication method 400 provided in an embodiment of the present application.
  • FIG. 9a is a schematic diagram of a frequency unit deployment mode provided by an embodiment of the present application.
  • FIG. 9b is a schematic diagram of another frequency unit deployment mode provided by the embodiment of the present application.
  • FIG. 9c is a schematic diagram of another frequency unit deployment mode provided by the embodiment of the present application.
  • FIG. 10 is a schematic diagram of a frequency unit provided by an embodiment of the present application.
  • FIG. 11 is an interaction flowchart of a communication method 500 provided in an embodiment of the present application.
  • FIG. 12a is a schematic diagram of an FDD mode uplink/downlink transmission provided by an embodiment of the present application.
  • FIG. 12b is a schematic diagram of another FDD mode uplink/downlink transmission provided by the embodiment of the present application.
  • FIG. 12c is a schematic diagram of another FDD mode uplink/downlink transmission provided by the embodiment of the present application.
  • FIG. 13a is a schematic diagram of uplink/downlink transmission in a TDD mode provided by an embodiment of the present application.
  • FIG. 13b is a schematic diagram of another TDD mode uplink/downlink transmission provided by the embodiment of the present application.
  • FIG. 13c is a schematic diagram of another TDD mode uplink/downlink transmission provided by the embodiment of the present application.
  • Fig. 14a is a schematic diagram of an uplink/downlink frequency unit deployment mode provided by an embodiment of the present application.
  • Fig. 14b is a schematic diagram of another uplink/downlink frequency unit deployment mode provided by the embodiment of the present application.
  • Fig. 14c is a schematic diagram of another uplink/downlink frequency unit deployment mode provided by the embodiment of the present application.
  • Fig. 14d is a schematic diagram of another uplink/downlink frequency unit deployment mode provided by the embodiment of the present application.
  • Fig. 15 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • Fig. 16 is another schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication method provided by this application can be applied to various communication systems, such as: Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) system, advanced long term evolution (Advanced long term evolution, LTE-A) system, new air interface (New Radio, NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum (LTE-U) system, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, non-terrestrial network (Non-Terrestrial Networks, NTN) system, universal mobile communication system (Universal Mobile Telecommunications System, UMTS), Wireless Local Area Networks (Wireless Local Area Networks, WLAN), Wireless Fidelity (Wireless Fidelity, WIFI), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packe
  • the terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • PLMN Public Land Mobile Network
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • a virtual reality (Virtual Reality, VR) terminal device an augmented reality (Augmented Reality, AR) terminal Equipment
  • wireless terminal equipment in industrial control wireless terminal equipment in self driving
  • wireless terminal equipment in remote medical wireless terminal equipment in smart grid
  • wireless terminal equipment in transportation safety wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories.
  • the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver) in GSM or CDMA Station, BTS), or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an access point, or a vehicle-mounted device, a wearable Equipment and network equipment or base station (gNB) in the NR network or network equipment in the future evolved PLMN network or network equipment in the NTN network.
  • AP Access Point
  • BTS Global System for Mobile communications
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolved base station
  • gNB wearable Equipment and network equipment or base station
  • the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the transmission resources for example, frequency domain resources, or spectrum resources
  • the cell may be a network device (
  • the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell)
  • the small cell here may include: a metro cell (Metro cell), a micro cell (Micro
  • Fig. 1 shows a schematic diagram of a communication system applicable to the communication method of the embodiment of the present application.
  • the communication system 100 may include network devices and terminal devices, and the number of network devices and terminal devices may be one or more, such as network devices 111 and 112 and terminal devices 121 to 128 shown in FIG. 1 , in the communication system 100, the network device 111 can communicate with one or more of the terminal devices 121 to 126 through a wireless air interface, and the network device 111 can communicate with one or more of the terminal devices 127 and 128 through the network device 112 communicate with a terminal device.
  • the terminal devices 124 to 126 can form the communication system 101.
  • the terminal device 124 can communicate with one or more of the terminal devices 125 and 126 through wireless air interfaces
  • the network device 112 and the terminal device 127 and 128 may form a communication system 102, in which the network device 112 may communicate with one or more terminal devices among the terminal devices 127 and 128 through a wireless air interface.
  • FIG. 1 is only an example, showing two network devices and eight terminal devices in the communication system 100, three terminal devices in the communication system 101, and one network device and two terminal devices in the communication system 102. . But this should not constitute any limitation to the present application. Any of the above communication systems may include more or less network devices, or more or less terminal devices. This embodiment of the present application does not limit it.
  • IoT Internet of Things
  • passive IoT In order to further popularize IoT, to implant IoT modules into the human body or smaller objects, it is necessary to use smaller batteries or even completely get rid of the limitations of batteries, or to design a method to reduce the power consumption of radio transceivers, and then To overcome the limitations of cost, size, power consumption, etc. of IoT devices. Therefore, passive (Passive) IoT and WUR are introduced into the 5G NR system. Passive IoT came into being after being inspired by the current mass and mature use of RFID technology. Because the power module is omitted, the volume of passive RFID products can reach centimeters The level is even smaller, and its own structure is simple, low cost, low failure rate, and long service life.
  • RFID technology It is a non-contact automatic identification technology, which can automatically identify target objects and obtain relevant data through radio frequency signals.
  • an RFID system consists of a reader and a tag.
  • the reader charges the tag by sending an excitation signal to the tag, and the tag receives the signaling sent by the reader and sends a reflected signal to the reader in a reflective communication manner.
  • the reader can identify the tag's identity document (ID), and perform operations such as reading and writing the tag.
  • ID identity document
  • the excitation signal sent by the reader to the tag may be the downlink signal or one of the downlink signals hereinafter, and the reflected signal may be the uplink signal or one of the uplink signals hereinafter.
  • the tag sends a reflected signal to the reader in a reflective communication manner, specifically, the tag uses the carrier provided by the downlink signal to transmit the uplink signal.
  • the separated reader includes a helper and a receiver.
  • the helper sends an excitation signal to the tag through the forward link, and the receiver receives the reflected signal from the tag through the reverse link.
  • the receiver generates RFID-related downlink signaling, and sends the downlink signaling to the helper through the forward link, and then the helper in Forwarding on the forward link.
  • Method 2c in addition to the excitation and reflection of signals between the reader and the tag through the forward link and the reverse link, the reader also communicates with the centralized control unit (such as Base station) for communication, the centralized control unit can schedule and control the resources and transmission behavior of the forward link used by the reader.
  • the centralized control unit such as Base station
  • the communication between the helper and the receiver in the above-mentioned method 1, and between the reader and the centralized control unit in the above-mentioned method 2 can be performed through NR technology.
  • WUR technology The primary connection radio (PCR) with high power consumption can also be called the main receiver. After entering the dormant state, it uses the Companion Radio (Companion Radio) with low power consumption, also known as wake-up The receiver (WUR) monitors the wake-up frame sent by the AP, and wakes up the PCR after monitoring the wake-up frame.
  • Companion Radio Companion Radio
  • WUR monitors the wake-up frame sent by the AP, and wakes up the PCR after monitoring the wake-up frame.
  • a main receiver 311 and a wake-up receiver 312 are deployed in a receiver device 310 .
  • the transmitter device 320 such as an AP or terminal device
  • the main receiver is turned off, also known as being in a dormant state, and the wake-up receiver is turned on; as shown in FIG. 3b, when the transmitter device 320 sends data, first Send wake-up data (such as the above-mentioned wake-up frame), and the receiving end device 310 activates the main receiver 312 after receiving the wake-up data through the wake-up receiver 311, so that the main receiver is turned on, also known as being in an active state. At this time, the receiving end device 310 passes The main receiver 311 receives the data sent by the transmitter device 320 after waking up the data.
  • the information bits of the wake-up machine are modulated into on-off keying (OOK) symbols.
  • OOK demodulation does not require any channel equalization in the frequency domain and time domain, so the receiving end device listens by waking up the receiver for non-coherent detection (such as envelope detection). With non-coherent detection, the receiver device does not need to maintain/track the oscillation rate with high precision. Therefore, a phase-locked loop can be avoided, further reducing power consumption at the receiving side.
  • OOK symbol is only an example of a WUR wake-up frame, and does not constitute any limitation to this application. Certainly.
  • the RFID technology applied in the NR system can be called passive (Passive) IoT.
  • the Passive IoT provided by this application is similar to the RFID transmission mechanism.
  • Passive IoT Passive IoT devices (such as tags) can be passive (Batter Free), that is, Passive IoT devices are not equipped with themselves or do not mainly rely on batteries or wired power sources for power supply.
  • the fact that Passive IoT devices do not have a power module does not mean that no electricity is required.
  • Passive IoT devices can obtain energy from ambient light, heat, and radio frequency, thereby supporting IoT data perception, wireless transmission, and distributed computing. wait.
  • Passive IoT devices can also be passive or semi-passive.
  • Energy storage passive devices have energy storage devices.
  • the semi-passive device has a battery, but the battery power supply is only for the auxiliary support of the circuit in the tag that requires power to maintain data or the voltage required for the tag chip to work.
  • the tag circuit itself consumes little power to supply power, and the battery size is relatively small.
  • Fig. 4 and Fig. 5 exemplarily show schematic diagrams of uplink and downlink communication methods in Passive IoT communication.
  • FIG. 4 exemplarily shows a schematic diagram of a Passive IoT downlink communication method.
  • the tag sends an AM signal to the reader through the downlink, and the tag receives the AM signal, and an envelope detector can be used to perform envelope detection on the AM signal to obtain the low-frequency signal.
  • the main components of the envelope detector include the diode shown in Figure 4 and the resistor-capacitance circuit (resistor-capacitance circuit, RC), also known as the oscillator circuit.
  • the envelope detection circuit shown in FIG. 4 is a schematic diagram of the most traditional basic circuit structure, and the evolution structure of the envelope detection circuit will not be repeated here.
  • the embodiment of the present application does not limit the structure of the envelope detection circuit adopted by the tag.
  • FIG. 5 exemplarily shows a schematic diagram of a Passive IoT uplink communication method.
  • the tag itself cannot provide power, and it is unconditionally connected to a wired power source for the tag to transmit data. Therefore, the tag needs to obtain energy from the external environment, and then provide the tag for data transmission, data processing and other operations.
  • the tag when it receives the carrier signal sent by the reader, it can use the energy obtained from the electromagnetic field generated in the space to drive the chip to transmit the information stored by itself.
  • the tag can also drive the chip to store the information stored by itself by acquiring energy such as ambient light and heat. teleport out.
  • tags can also be passive or semi-passive devices for energy storage.
  • Passive IoT is only an exemplary name, and when it is replaced by other expressions, it also belongs to the protection scope of this application.
  • an embodiment of the present application provides a solution for determining a frequency unit, so that the first device and the second device can communicate in an NR system, an LTE system or other similar communication systems.
  • the frequency unit determination scheme provided by this application is not limited to the above-mentioned RFID, WUR or similar technologies, no matter what For the communication between devices, the frequency unit used for communication can be determined based on the solution provided by the embodiment of the present application.
  • the frequency unit for communication between the first device and different devices (for example, the first frequency unit for communicating with the second device and the second frequency unit for communicating with the third device) is located at For the same working frequency band, when determining the frequency unit, consider the granularity of the channel grid, for example, set the granularity of the first channel grid corresponding to the first frequency unit to be smaller, so as to improve the flexibility of frequency unit deployment.
  • FR1 indicates the low frequency band
  • FR2 indicates the millimeter wave high frequency band.
  • NR can work in the working frequency band of FR1 as shown in Table 1 below, and FR1 includes multiple working frequency bands of NR.
  • Each working frequency band has a corresponding serial number, a lower frequency boundary and an upper frequency boundary for uplink transmission (such as a terminal to a base station), a lower frequency boundary and an upper frequency boundary for a downlink transmission (such as a base station to a terminal transmission), and a duplex mode.
  • the lower frequency boundary F UL_low of uplink transmission is 1920MHz
  • the upper frequency boundary F UL_high of uplink transmission is 1980MHz
  • the lower frequency boundary F DL_low of downlink transmission is 2110MHz.
  • the upper frequency boundary F DL_high is 2170MHz, and the duplex mode it adopts is frequency division duplexing (frequency division duplexing, FDD); as shown in Table 1, the working frequency band numbered n39, its downlink transmission and downlink transmission The frequency boundaries are both 1880MHz, and the upper frequency boundaries for uplink transmission and downlink transmission are both 1920MHz, and the duplex mode adopted is time division duplexing (time division duplexing, TDD).
  • FDD frequency division duplexing
  • the duplex mode adopted by NR can also include supplementary downlink (supplementary downlink, SDL) as shown in Table 1, which is used to increase the downlink coverage of NR, and supplementary uplink (supplementary uplink) , SUL), used to increase the uplink coverage of NR.
  • SDL supplementary downlink
  • SUL supplementary uplink
  • Parameter set (numerology): In the NR system, in order to adapt to a variety of OFDM waveforms with different subcarrier spacing, a parameter set is introduced, so that the subcarrier spacing is not limited and can be adapted according to different usage scenarios.
  • ⁇ f is the subcarrier spacing
  • ⁇ is an integer greater than or equal to 0.
  • Antenna port An antenna port is defined such that the channel of one symbol transmitted on that antenna port can be inferred from the channel of another symbol transmitted on the same antenna port, in other words, the experience of different signals transmitted on the same antenna port The channel environment is the same.
  • Resource grid (resource grid) or resource grid: a resource grid corresponds to a parameter set and carrier, the resource grid includes subcarriers and OFDM symbols, where, Indicates the number of resource blocks (resource element, RB) in one resource grid when the subcarrier spacing is configured as ⁇ . Indicates the number of subcarriers in one RB. optional, consecutive subcarriers.
  • the starting resource block of the resource grid is a common resource block (CRB).
  • CRB common resource block
  • Resource element Each element in the resource grid used for antenna port p and subcarrier spacing configuration ⁇ is called a resource element, and is uniquely identified by (k,l) p, ⁇ , where k is The index of the RE in the frequency domain, l is the position of the symbol of the RE in the time domain relative to a certain reference point.
  • the resource element (k,l) p, ⁇ corresponds to a physical resource and complex value When there is no risk of confusion, or when no specific antenna port or subcarrier spacing is specified, the indices p and ⁇ may be discarded, resulting in Or a k,l .
  • Common resource blocks For the subcarrier spacing configuration ⁇ , the common resource blocks are numbered upwards from 0 in the frequency domain. The center frequency point of the subcarrier 0 of the common resource block 0 of the subcarrier spacing configuration ⁇ coincides with the common reference point A of the resource grid, see Figure 6.
  • Physical resource blocks The physical resource blocks of the subcarrier spacing configuration ⁇ are defined in a partial bandwidth (bandwidth part, BWP).
  • BWP For a given parameter set ⁇ i in a BWP i on a given (given) carrier (carrier), the BWP is a subset of continuous CRBs. The frequency position relationship between the BWP and the carrier can be shown in FIG. 7 .
  • an end-device can have up to four BWPs configured in the downlink, one of which is active at a given time; an end-device can be configured with up to four BWPs in the uplink, of which one The upstream BWP is active at a given time. If a terminal device is configured with a supplementary uplink, the terminal device may additionally configure up to four bandwidth parts in the supplementary uplink, where a single supplementary uplink BWP is active at a given time.
  • the global frequency grid defines a set of radio frequency (radio frequency, RF) reference frequencies F REF .
  • RF reference frequencies are used in signaling to identify the location of RF channels, synchronization signal (SS) blocks, and other elements.
  • a global frequency grid is defined for all frequencies from 0 to 100GHz. The granularity of the global frequency grid is ⁇ F Global .
  • the RF reference frequency is specified by the NR absolute radio frequency channel number (NR-ARFCN) within the range (0-2016666) on the global frequency grid.
  • NR-ARFCN NR absolute radio frequency channel number
  • F REF (MHz) The relationship between NR-ARFCN and RF reference frequency F REF (MHz) is given by the following equation, where F REF-Offs and N Ref-Offs are given in Table 3 and N REF is NR-ARFCN.
  • F REF F REF-Offs + ⁇ F Global (N REF –N REF-Offs )
  • the channel grid defines a subset of RF reference frequencies, which can be used to identify the RF channel position in uplink transmission and downlink transmission.
  • the RF reference frequency of an RF channel is mapped to a resource element on a carrier.
  • a frequency subset from the global frequency raster is applied to that band and forms a channel raster with a granularity of ⁇ F Raster , which may be equal to or greater than ⁇ F Global .
  • ⁇ F Raster 20 ⁇ F Global , such as working frequency bands n1, n2 and so on.
  • Table 5.4.2.3-1 For the channel grid and applicable NR-ARFCN of each operating frequency band in the NR system, refer to Table 5.4.2.3-1 in 3GPP TS38.101-1 V17.3.0, and for the NR-ARFCN allowed on frequency band n46 and frequency band n47, refer to 3GPP respectively TS38.101-1 V17.3.0 Table 5.4.2.3-2 and Table 5.4.2.3-3. Considering space limitations, Table 4 below is only an excerpt from the above Table 5.4.2.3-1.
  • resource block resource block
  • the mapping relationship between the RF reference frequency and the resource elements is applicable to the uplink (uplink, UL) and downlink (downlink, DL) of the NR system.
  • a mod b means the remainder obtained by dividing a by b.
  • the first, second and various numbers are only for convenience of description, and are not used to limit the scope of the embodiments of the present application. For example, distinguishing between different devices, frequency units, channel grids, etc.
  • the "protocol” involved in the embodiment of the present application may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which is not limited in the present application.
  • the first device may be, for example, the above-mentioned tag, or a terminal device equipped with tag-related devices (or have tag-related functions); the second device may be the above-mentioned reader, or a terminal device equipped with reader-related devices (or have reader-related functions) terminal equipment, or network equipment deployed with reader-related devices.
  • the first device is a terminal device equipped with a tag-related device
  • the second device is a terminal device equipped with a reader-related device
  • the first device may be the terminal device 125 or 126 in Figure 1
  • the second device may be Terminal device 124 in FIG.
  • the first device when the first device is a terminal device equipped with a tag and the second device is a network device equipped with a reader, the first device may be one of the terminal devices 121 to 123 in FIG. 1 Either, the second device may be the network device 111 in FIG. 1 , or the first device may be the terminal device 127 or 128 in FIG. 1 , and the second device may be the network device 112 in FIG. 1 .
  • the first device may be the above-mentioned wake-up machine, or a terminal device deployed with the wake-up machine
  • the second device may be, for example, a network device (such as a base station, an AP, etc.) or a terminal device.
  • the first device is a terminal device equipped with a wake-up machine and the second device is a terminal device
  • the first device may be the terminal device 125 or 126 in FIG. 1
  • the second device may be the terminal device 124 in FIG.
  • the first device When the first device is a terminal device equipped with a wake-up machine and the second device is a network device, the first device can be any one of the terminal devices 121 to 123 in Figure 1, and the second device can be the The network device 111 , or the first device may be the terminal device 127 or 128 in FIG. 1 , and the second device may be the network device 112 in FIG. 1 .
  • the embodiment of the present application also includes a third device, and the first device communicates with the second device and the third device by using different frequency units respectively.
  • the third device may be a network device or a terminal device, which is not limited in this application.
  • the first device shown in the following embodiments may also be replaced with components in the first device, such as a chip, a chip system, or other functional modules capable of invoking programs and executing programs.
  • the second device may also be replaced with components in the second device, such as a chip, a chip system, or other functional modules capable of invoking programs and executing programs.
  • the third device may also be replaced with components in the third device, such as a chip, a chip system, or other functional modules capable of invoking programs and executing programs.
  • FIG. 8 is a schematic diagram of an interaction process of a communication method 400 provided in an embodiment of the present application. As shown in FIG. 8, the method 400 may include some or all of the steps in S410-1, S410-2, S420-1 and S420-2. Each step in the method 400 will be described in detail below.
  • the first device determines the first frequency unit
  • the second device determines the first frequency unit
  • the first device sends a downlink signal to the second device at the first frequency unit; correspondingly, the second device receives the downlink signal from the first device at the first frequency unit;
  • the second device sends an uplink signal to the first device at the first frequency unit; correspondingly, the first device receives the uplink signal from the second device at the first frequency unit.
  • the first device determines that the first frequency unit is used to communicate with the second device.
  • This communication may be sending or receiving signals.
  • This application does not limit the execution order of the above S410-1 and S410-2.
  • the above S410-2 may be performed before S410-1.
  • the above S420-1 and S420-2 may be performed alternatively, or may be performed sequentially, for example, the second device sends an uplink signal to the first device after receiving the downlink signal sent by the first device.
  • the second device sends an uplink signal to the first device after receiving the downlink signal sent by the first device.
  • the second device sends an uplink signal to the first device after receiving the downlink signal sent by the first device.
  • the granularity of the first channel grid corresponding to the first frequency unit is smaller than or equal to the granularity of the second channel grid corresponding to the second frequency unit, and the second frequency unit is used for communication between the first device and the third device.
  • a frequency unit and the second frequency domain unit are located in the same working frequency band.
  • the first frequency unit may be a carrier, or a BWP.
  • the first frequency unit may be a carrier configured for Passive IoT (referred to as Passive IoT carrier); another example, the first device and the second device communicate based on WUR technology
  • the first frequency unit may be a carrier configured for the WUR (WUR carrier for short).
  • WUR carrier for short.
  • the above-mentioned Passive IoT carrier and WUR carrier may be the same carrier or different carriers.
  • the first frequency unit may be a frequency unit used for uplink transmission, such as an uplink frequency unit; or the first frequency unit may be a frequency unit used for downlink transmission, such as a downlink frequency unit; or the first frequency unit includes The frequency unit and the frequency unit used for downlink transmission, in other words, the first frequency unit includes an uplink frequency unit and a downlink frequency unit.
  • the uplink frequency unit and the downlink frequency unit may be the same frequency unit, that is, the first frequency unit is a frequency unit used for both uplink transmission and downlink transmission.
  • the above S420-2 may include that the first device receives an uplink signal from the second device on the uplink frequency unit, and correspondingly, the second device transmits an uplink signal to the first device on the uplink frequency unit.
  • the device sends an uplink signal; when the first frequency unit is a downlink frequency unit, the above S420-1 may include, the first The device sends a downlink signal to the second device on the downlink frequency unit, and correspondingly, the second device receives the downlink signal from the first device on the downlink frequency unit; when the first frequency unit includes an uplink frequency unit and a downlink frequency unit, The first device sends a downlink signal to the second device on the downlink frequency unit of the first frequency unit, and receives an uplink signal from the second device on the uplink frequency unit of the first frequency unit.
  • the downlink signal may be, for example, a wake-up signal, and the first device may send the wake-up signal to the second device in the downlink frequency unit.
  • the downlink signal may be a carrier signal, or the downlink signal may be downlink signaling and/or data, and the uplink signal may be a reflected signal based on the carrier signal.
  • the first device sends a carrier signal to the second device at the downlink frequency unit, and receives the reflected signal sent by the second device based on the carrier signal in the way of reflection communication at the uplink frequency unit.
  • the signal sent by the first device There is overlap in the time domain between the carrier signal and the reflected signal sent by the second device.
  • the carrier signal is used to provide a carrier for uplink reflection, or to provide energy for passive tags
  • the waveform corresponding to the carrier signal can be a sine wave or a cosine wave at a given frequency, Or, the waveform corresponding to the carrier signal is not amplitude and/or phase modulated, or the waveform corresponding to the carrier signal is amplitude and/or phase modulated, but the overall amplitude is not enough to be interpreted as transmission data by the receiving side.
  • the waveform corresponding to the downlink signaling/data is amplitude and/or phase modulated, and the overall amplitude is sufficient to be interpreted as transmission data by the receiving side.
  • the second device may determine the first frequency unit or obtain the first frequency unit from receiving first configuration information sent by the first device.
  • the second frequency unit may also be a carrier, for example, the second frequency unit may be an NR carrier configured in the NR system. Similar to the first frequency unit, the second frequency unit may be a frequency unit for uplink transmission, or a frequency unit for downlink transmission, or include a frequency unit for uplink transmission and a frequency unit for downlink transmission.
  • the fact that the first frequency unit and the second frequency unit are located in the same operating frequency band may refer to: the uplink frequency unit in the first frequency unit and the second frequency unit are located in the same The working frequency band; or the downlink frequency unit in the first frequency unit and the second frequency unit are in the same working frequency band; or the uplink frequency unit, the downlink frequency unit, and the second frequency unit in the first frequency unit are all in the same working frequency band.
  • the first frequency unit and the second frequency unit are located in the same working Frequency bands may include at least one of the following examples:
  • Example 1 The uplink frequency unit in the first frequency unit and the frequency unit used for uplink transmission in the second frequency unit are located in the same working frequency band;
  • Example 2. The downlink frequency unit in the first frequency unit is the same as the frequency unit used for uplink transmission in the second frequency unit.
  • the frequency unit for downlink transmission is located in the same working frequency band; example 3, the uplink frequency unit in the first frequency unit and the frequency unit used for downlink transmission in the second frequency unit are located in the same working frequency band; example 4, the downlink in the first frequency unit
  • the frequency unit is located in the same working frequency band as the frequency unit used for uplink transmission in the second frequency unit.
  • the first frequency unit and the second frequency unit are located in the same operating frequency band and include at least three of the above examples 1 to 4, it means the uplink frequency unit and downlink frequency unit of the first frequency unit, and the second frequency unit is used for The frequency unit for uplink transmission and the frequency unit for downlink transmission are both located in the same working frequency band.
  • the working frequency band where the first frequency unit and the second frequency unit are located may be, for example, the NR working frequency band in Table 1 above.
  • both the first frequency unit and the second frequency unit may be deployed in a working frequency band corresponding to n1.
  • the first frequency unit may have different deployment modes.
  • the second frequency unit (such as NR carrier) includes a transmission bandwidth (such as NR transmission bandwidth) and a guard band (such as NR guard band), and the transmission bandwidth of the second frequency unit includes N RB RBs , such as RB#0 to RB#N RB-1 .
  • the first frequency unit can be deployed within the transmission bandwidth of the second frequency unit, and the first frequency unit can occupy one or more RBs in the second frequency unit, as shown in Figure 9a, where the first frequency unit occupies the second frequency unit RB#1; or the first frequency unit may be deployed in the guard band of the second frequency unit, see Figure 9b; or the frequency domain interval between the first frequency unit and the second frequency unit is smaller than a threshold, see Figure 9c.
  • the resource element corresponding to the first channel grid of the first frequency unit in the first frequency unit may be a resource element in the middle of the first frequency unit, and the index of the RB where the resource element is located may satisfy Formulas in Table 5
  • N' RB is the number of RBs included in the transmission bandwidth of the first frequency unit
  • the resource element corresponding to the second channel grid of the second frequency unit in the second frequency unit may be the resource element in the middle of the second frequency unit
  • the The index of the RB where the resource element is located can satisfy the formula in Table 5
  • the frequency domain resource relationship between the first frequency unit and the second frequency unit further includes the following three possible examples.
  • the RB of the first frequency unit should be on the boundary with the RB of the second frequency unit align.
  • the subcarriers of the first frequency unit can be aligned with the subcarrier boundaries of the second frequency unit to avoid the factor carrier non-orthogonal Interference is caused to data transmission within the transmission bandwidth of the second frequency unit.
  • the frequency domain resources occupied by the first frequency unit do not overlap with the transmission bandwidth of the second frequency unit, and the mismatch between the RBs of the first frequency unit and the RB boundaries of the second frequency unit will not affect the spectrum of the second frequency unit.
  • the use efficiency is affected, so it may not be limited whether the RBs of the first frequency unit are aligned with the RBs of the second frequency unit.
  • the subcarriers of the first frequency unit can be separated from the subcarriers of the second frequency unit
  • the carrier boundaries are aligned, and it is not limited whether the RBs of the first frequency unit and the RBs of the second frequency unit are aligned.
  • the deployment mode of the first frequency unit in the foregoing second example and the third example may be referred to as deployment outside the transmission bandwidth hereinafter.
  • the frequency position of the first channel grid in the first frequency unit corresponds to the frequency position of a resource element in the first frequency unit.
  • the following two methods can be used: example.
  • the index of the position of the one resource element in the frequency domain may be determined according to the transmission bandwidth of the first frequency unit.
  • the transmission bandwidth of the first frequency unit includes N' RB RBs
  • the index of the resource element is 0, and the index of the physical resource block is
  • the frequency position corresponding to the first channel grid is the physical resource block index of The index of the resource element is 6.
  • the frequency domain index of the position of the one resource element may be determined according to the transmission bandwidth N RB of the second frequency unit.
  • the transmission bandwidth of the first frequency unit includes N RB RBs.
  • the index of the physical resource block is
  • the index of the resource element is 0, and the index of the physical resource block is
  • the granularity of the first channel grid corresponding to the first frequency unit and the granularity of the channel grid corresponding to the second frequency unit may be the same or different.
  • the granularity of the first channel grid is smaller than Or equal to the granularity of the second channel grid, to avoid reducing the flexibility of deployment of the first frequency unit due to the excessive granularity of the first channel grid.
  • the position of the arrow is the frequency position of the second frequency unit, that is, the frequency position of a resource element in the second frequency unit corresponding to the frequency position where the second channel grid is located.
  • the position of the arrow is the frequency position of the first frequency unit, that is, the frequency position of a resource element in the first frequency unit corresponding to the frequency position where the first channel grid is located.
  • the frequency position of the first channel grid corresponds to RE#6 in RB#M; for another example, the transmission bandwidth of the first frequency unit
  • the frequency position of the first channel grid corresponds to RE#0 in RB#M.
  • M and N above are positive integers. Generally, M is less than or equal to N.
  • the parity of N RB and N' RB is consistent: see (a) for the second frequency unit, (c) for the first frequency unit, or (b) for the second frequency unit, and (d) for the first frequency unit ; or the parity of N RB and N' RB is inconsistent: for example, see (a) for the second frequency unit, see (d) for the first frequency unit, or see (b) for the second frequency unit, and (c) for the first frequency unit .
  • the possible value f p of the frequency corresponding to the first channel grid is shown in Table 6 below.
  • k, n, and m are all integers
  • k*100 is the frequency corresponding to the second channel grid
  • m*180 represents the bandwidth of an integer multiple of RBs.
  • the index of the middle resource block (RB) is 0, the index of the RB whose frequency is higher than the RB is a positive value, and the index of the RB whose frequency is lower than the RB is a negative value, when the parity of the transmission bandwidth of the second frequency unit is consistent with that of the first frequency unit, only some limited RB positions in the second frequency unit can be used to deploy the first frequency unit.
  • m represents the index of the RB.
  • the middle RB within the transmission bandwidth of the second frequency unit can It is used to deploy the first frequency unit, and the positions at intervals of 5 RBs can be used to deploy the first frequency unit.
  • the parity of the N RB and the N' RB is inconsistent, no frequency position for deploying the first frequency unit can be found within the NR carrier.
  • the index of the position of the resource element in the frequency domain is determined according to the transmission bandwidth of the second frequency unit, so as to avoid the resource element being included in the transmission bandwidth of the first frequency unit.
  • the situation that the first frequency unit cannot be configured or in other words, avoid the situation where the number of RBs included in the transmission bandwidth of the first frequency unit and the number of RBs included in the second frequency unit
  • configuring the first frequency unit causes the RB boundaries of the first frequency unit to be misaligned with the RB boundaries of the second frequency unit.
  • the second frequency unit can be used to configure the first frequency unit
  • the frequency position is also very limited.
  • this embodiment considers further reducing the granularity of the first channel grid.
  • the value of m in the f p formula is 0, 1, 2, 3..., and try the value of n to calculate k*100 ⁇ m*180, or k*100 ⁇ ( m*180+90), and the deviation between n*100, the deviation is 0, ⁇ 10, ⁇ 20, ⁇ 30, ⁇ 40, ⁇ 50 (kHz), then in order to make the first frequency unit can be deployed in the second
  • the first channel grid may be set to 10 kHz.
  • first channel grid being 10 kHz is only an example, and does not constitute any limitation to the present application.
  • various values of the granularity of the first channel grid can improve the flexibility of the deployment of the first frequency unit, for example, the first channel grid
  • the granularity may also be 5 kHz, 20 kHz, etc.
  • the subcarrier spacing is 30kHz
  • the first channel grid and the second channel grid are both 100kHz
  • RB Take the bandwidth of 180kHz as an example, in the case of ensuring that the RB of the first frequency unit is aligned with the RB boundary of the second frequency unit, possible values of frequencies corresponding to the first channel grid are shown in Table 7 below.
  • the deviation of each possible value of the frequency f p corresponding to the first channel grid from an integer multiple of 100kHz is the same as when the subcarrier spacing is 30kHz, that is, when the subcarrier spacing is 60kHz, the first
  • the granularity of the channel grid may also be 5 kHz, 10 kHz or 20 kHz.
  • the number of RBs included in the transmission bandwidth of the first frequency unit is the same as the number of RBs included in the transmission bandwidth of the second frequency unit.
  • the first device may include the number of RBs included in the transmission bandwidth of the second frequency unit.
  • the parity of the number determines the number of RBs included in the transmission bandwidth of the first frequency unit, so that the parity of the number of RBs included in the transmission bandwidth of the first frequency unit is consistent with the parity of the number of RBs included in the transmission bandwidth of the second frequency unit. Further, the flexibility of deploying the first frequency unit is improved.
  • the scenario of the above-mentioned first example that is, the first frequency unit is deployed within the transmission bandwidth of the second frequency unit is used as an example for illustration.
  • the following will take the scenario of the second example or the third example above, that is, the first frequency unit is deployed in the guard band of the second frequency unit, or the frequency domain interval between the first frequency unit and the second frequency unit is smaller than the threshold Take this as an example.
  • the subcarriers of the first frequency unit Aligning with the subcarrier boundary of the second frequency unit can avoid interference to data transmission within the transmission bandwidth of the second frequency unit due to non-orthogonality between the first frequency unit and the second frequency unit.
  • the analysis results are only shown by taking the transmission bandwidth of NR carriers as 5 MHz and 10 MHz as examples. Assume that within the transmission bandwidth of the second frequency unit, the frequency corresponding to the RB at the middle RB position is 0 Hz, and the frequency is higher than the RB The frequency of the RB is a positive value, and the frequency of the RB with a frequency lower than the RB is a secondary value. It can be seen from the above table 8 that the f p that satisfies an integral multiple of 100kHz is very limited, for example, only in the transmission bandwidth of the second frequency unit is 5MHz .
  • the transmission bandwidth of the second frequency unit is other values, the possible positions of f p can be calculated by using a similar method. Due to space limitations, they will not be listed here. In a similar way of sampling, it is concluded that when the transmission bandwidth of the second frequency unit is other values, the frequency positions where f p is an integer multiple of 100kHz are also very limited, that is, the positions where the first frequency unit can be deployed are very limited.
  • the possible values of the frequency f p corresponding to the first channel grid shown in the above table 8 and not shown in table 8 but calculated in a similar manner the frequency f p corresponding to the first channel grid
  • the deviation from integer multiples of 100kHz is 0, ⁇ 5, ⁇ 10, ⁇ 15, ⁇ 20, ⁇ 25, ⁇ 30, ⁇ 35, ⁇ 40, ⁇ 45, ⁇ 50 (kHz).
  • the granularity of the first channel grid may be 5 kHz.
  • Table 9 takes the second frequency unit as an NR carrier as a possible example.
  • n1, n2, n3 and n5 are listed in this table. It should be understood that for other operating frequency bands where the granularity of the second channel grid (such as the NR channel grid) is 100 kHz, the granularity of the first channel grid is 5 kHz.
  • the deviation of the frequency f p corresponding to the first channel grid from integer multiples of 100kHz is 0, ⁇ 10, ⁇ 20, ⁇ 30, ⁇ 40, ⁇ 50 (kHz),
  • the granularity of the first channel grid may be 10 kHz, and of course it may also be 5 kHz.
  • the deviation of the frequency f p corresponding to the first channel grid from an integer multiple of 100kHz is 0, ⁇ 20, ⁇ 40 (kHz), in this case
  • the granularity of the first channel grid can be 20kHz, and of course it can also be 5kHz or 10kHz.
  • the granularity of the first channel grid is related to at least one of the deployment mode of the first frequency unit and the subcarrier spacing of the first frequency unit. Based on this, the first device may determine the granularity of the first channel grid according to at least one of the deployment mode of the first frequency unit and the subcarrier spacing of the first frequency unit.
  • the subcarrier spacing of the first frequency unit may be a subcarrier spacing agreed upon by the first frequency unit, or a subcarrier spacing configured in the first frequency unit.
  • the correspondence between the channel grid of the first frequency unit and the subcarrier spacing of the first frequency unit may include:
  • the subcarrier spacing is 15kHz, and the channel grid is 5kHz;
  • the subcarrier spacing is 30kHz, and the channel grid is 10kHz;
  • the subcarrier interval is 60kHz, and the channel grid is 20kHz.
  • the correspondence between the channel grid of the first frequency unit, the subcarrier spacing of the first frequency unit, and the deployment mode of the first frequency unit may include:
  • the subcarrier spacing is 15kHz, deployed within the transmission bandwidth, and the channel grid is 10kHz;
  • the subcarrier spacing is 15kHz, deployed outside the transmission bandwidth, and the channel grid is 5kHz;
  • the subcarrier spacing is 30kHz, deployed within the transmission bandwidth, and the channel grid is 20kHz;
  • the subcarrier spacing is 30kHz, deployed outside the transmission bandwidth, and the channel grid is 10kHz;
  • the subcarrier spacing is 60kHz, deployed within the transmission bandwidth, and the channel grid is 20kHz;
  • the subcarrier spacing is 60kHz, deployed outside the transmission bandwidth, and the channel grid is 20kHz;
  • the above correspondence can be predefined or preconfigured, and the first device can determine the granularity of the first channel grid according to the above correspondence; or, the granularity of the first channel grid can be a predefined value, such as 5kHz, 10kHz Or an integer multiple of 20kHz.
  • the value of offset is ⁇ -50, -45, -40, -35, -30, -25, -20, -15, -10, -5, 0,5,10,15,20, One of 25,30,35,40,45,50 ⁇ kHz.
  • the first frequency unit may be determined by the first device, or the first frequency unit is obtained by the first device from the second configuration information received by the fourth device; for the second device, In other words, the first frequency unit may be determined by the second device, or the first frequency unit may be the second device sent from the first device.
  • the first configuration information sent is obtained.
  • the fourth device may be a network device, such as a base station, a macro base station, and the like.
  • the first frequency unit used for communication between the first device and the second device is determined, and the first frequency unit is used for communication between the first device and the third device.
  • the second frequency unit is located in the same working frequency band, and the granularity of the first channel grid corresponding to the first frequency unit is smaller than or equal to the granularity of the second channel grid.
  • the embodiment of the present application provides a solution for determining the frequency unit, so that the first device and the second device can communicate through the first frequency unit; on the other hand, when determining the frequency unit, the channel grid For example, the granularity of the first channel grid corresponding to the first frequency unit is set smaller, so as to improve the flexibility of deployment of the first frequency unit.
  • a DC subcarrier is not reserved in the downlink frequency unit.
  • the overall uplink carrier is shifted by half a subcarrier (for example, 7.5kHz).
  • the problem of DC subcarrier performance degradation caused by local oscillator leakage is dealt with by network equipment or terminal equipment, while there is no DC subcarrier reserved in the downlink carrier, and there is no overall offset for the uplink carrier half a subcarrier.
  • the downlink frequency units of the two communication systems have no offset, so the subcarrier boundaries are aligned; however, an uplink frequency in the two communication systems
  • the unit is offset by half a subcarrier, and the other uplink frequency unit is not offset, resulting in the two communication systems not aligning the subcarrier boundaries (that is, the subcarriers are not orthogonal), which in turn causes mutual interference between the communication systems during data transmission .
  • FIG. 11 is an interaction flowchart of a communication method 500 provided in an embodiment of the present application. As shown in FIG. 11, the communication method 500 further includes some or all of the following steps:
  • the first device at least one of the domain resource types to determine the uplink offset and/or downlink offset;
  • the first device determines the uplink frequency unit according to the uplink frequency position and the uplink offset;
  • the second device determines the uplink frequency unit according to the uplink frequency position and the uplink offset;
  • the first device determines a downlink frequency unit according to the downlink frequency position and the downlink offset;
  • the second device determines the downlink frequency unit according to the downlink frequency position and the downlink offset;
  • the first device sends a downlink signal to the second device in the downlink frequency unit; correspondingly, the second device receives the downlink signal from the first device in the downlink frequency unit;
  • the second device sends an uplink signal to the first device at the uplink frequency unit; correspondingly, the first device receives the uplink signal from the second device at the uplink frequency unit.
  • This embodiment does not limit the execution order of S520-1, S520-2, S530-1, and S530-2.
  • the above S540-1 and S540-2 may be performed alternatively, or may be performed sequentially, for example, the second device sends an uplink signal to the first device after receiving the downlink signal sent by the first device.
  • the first frequency unit may include an uplink frequency unit for transmitting uplink signals, and/or a downlink frequency unit for transmitting downlink signals.
  • the first device determining the first frequency unit may include: S520-1, the first device determines the uplink frequency unit according to the uplink frequency position and the uplink offset, and/or , S530-1. The first device determines the downlink frequency position and the downlink offset row frequency unit.
  • the uplink frequency position may be stipulated in the agreement, or predefined in the first device, or preconfigured by the fourth device for the first device, which is not limited in this application.
  • the downlink frequency position is similar to this and will not be repeated here.
  • Passive IoT there is often a frequency domain interval between the uplink frequency position and the downlink frequency position.
  • the frequency domain interval can also be stipulated in the protocol, or predefined in the first device, or pre-configured by the fourth device for the first device.
  • the first device may first determine the uplink offset and/or the downlink offset based on the above S510, so that the first device determines the first frequency unit based on the uplink offset/downlink offset, Avoid misalignment of subcarrier boundaries between communication systems in the shared frequency spectrum, causing interference to data transmission.
  • the frequency band type where the downlink frequency unit is located may include, for example, an uplink transmission frequency band in FDD mode, a downlink transmission frequency band in FDD mode, an SDL transmission frequency band, a SUL transmission frequency band, a TDD transmission frequency band, and the like.
  • the uplink transmission frequency band and the SUL transmission frequency band in the FDD mode are collectively referred to as the uplink transmission frequency band
  • the downlink transmission frequency band and the SDL transmission frequency band in the FDD mode are collectively referred to as the downlink transmission frequency band.
  • the above-mentioned first capability is whether the second device supports frequency shifting of the uplink signal to an uplink transmission frequency band other than the downlink transmission frequency band where the downlink frequency unit is located.
  • the second device may be a tag.
  • Types of second devices may include active tags and passive tags.
  • the type of the second device may reflect the above-mentioned first capability. For example, when the type of the second device is a passive tag, the second device does not have the ability to shift the frequency of the uplink signal to the downlink transmission frequency band where the downlink frequency unit is located. Capabilities outside the uplink transmission frequency band.
  • the foregoing time-domain resource types may include, for example, uplink time-domain resources (eg, uplink time slots) and downlink time-domain resources (eg, downlink time slots) in TDD mode.
  • uplink time-domain resources eg, uplink time slots
  • downlink time-domain resources eg, downlink time slots
  • the first device determines the uplink offset and/or the downlink offset based on at least one of the frequency band type where the downlink frequency unit is located and the first capability of the second device (or the type of the second device):
  • the downlink frequency unit is located in the downlink transmission frequency band, and the second device supports frequency shifting of the uplink signal to an uplink transmission frequency band outside the downlink transmission frequency band, and the uplink offset is a first value or a second value; or, The downlink frequency unit is located in a downlink transmission frequency band, and the second device does not support frequency shifting of the uplink signal to an uplink transmission frequency band other than the downlink transmission frequency band, and the uplink offset is the first value.
  • whether the second device supports shifting the frequency of the uplink signal to an uplink transmission frequency band other than the downlink transmission frequency band may be indicated by the first capability of the second device, or may be determined by the type of the second device.
  • the downlink transmission frequency band may be the downlink transmission frequency band or the SDL transmission frequency band in the FDD mode
  • the uplink transmission frequency band may be the uplink transmission frequency band and the SUL transmission frequency band in the FDD mode.
  • the downlink transmission frequency band is the downlink transmission frequency band in FDD mode and the uplink transmission frequency band is the uplink transmission frequency band in FDD mode
  • the downlink transmission frequency band and the uplink transmission frequency band are located in the same working frequency band.
  • uplink transmission The frequency band is the uplink working frequency band in the NR working frequency band n1
  • the downlink transmission frequency band is the downlink working frequency band in the NR working frequency band n1.
  • the NR working frequency band n1 is only an example, and it can be replaced with a working frequency band corresponding to any FDD mode in Table 1, such as n2, n3 . . .
  • the downlink transmission frequency band and the uplink transmission frequency band may not be paired transmission frequency bands, or in other words, the uplink transmission frequency band and the downlink transmission frequency band may be located in different working frequency bands, or in other words, the frequency band numbers of the uplink transmission frequency band and the downlink transmission frequency band (such as n1, n2, n3...) are different.
  • the downlink transmission frequency band is the downlink in FDD mode
  • the transmission frequency band, the upload transmission frequency band is the SUL transmission frequency band, and for example, the downlink transmission frequency band is the downlink working frequency band in the NR working frequency band n1, and the uplink transmission frequency band is the uplink working frequency band in the NR working frequency band n2.
  • the above-mentioned uplink transmission frequency band may be, for example, a section of frequency spectrum shared with LTE, then when the uplink transmission frequency band is used for LTE uplink communication, in order to ensure that the uplink frequency unit is aligned with the subcarrier boundary of the LTE frequency unit, the uplink offset Set as the second value, the second value may be, for example, 7.5kHz; in the case that the above-mentioned uplink transmission frequency band is not used for LTE uplink communication, the uplink offset is the first value, and the first value may be, for example, 0.
  • the second frequency unit includes an NR uplink carrier that transmits an NR uplink signal and/or an NR downlink carrier that transmits an NR downlink signal
  • the first frequency unit includes a Passive IoT uplink carrier that transmits a Passive IoT uplink signal and/or transmits a Passive IoT IoT downlink signal Passive IoT downlink carrier
  • the first frequency unit is located in the shared spectrum between NR and LTE.
  • the Passive IoT downlink carrier is located in the downlink transmission frequency band, and the second device supports frequency shifting of the Passive IoT uplink signal to the uplink transmission frequency band corresponding to the downlink transmission frequency band where the Passive IoT downlink carrier is located.
  • both the Passive IoT uplink carrier and the LTE uplink carrier are located in the uplink transmission frequency band, and the uplink offset of the Passive IoT uplink carrier is 7.5kHz; of course, if it is determined that the uplink transmission frequency band is not used for LTE uplink communication, then Uplink offset can be 0.
  • the NR uplink carrier is similar to the Passive IoT uplink carrier, and the uplink offset of the NR uplink carrier is the same as that of the Passive IoT uplink carrier.
  • the Passive IoT downlink carrier is located in the downlink transmission frequency band, and the second device does not support frequency shifting of the Passive IoT uplink signal to an uplink transmission frequency band other than the downlink transmission frequency band where the Passive IoT downlink carrier is located.
  • the Passive IoT uplink carrier is still located in the downlink transmission frequency band, and the downlink transmission frequency band is not used for LTE uplink communication, then the uplink offset of the Passive IoT uplink carrier is 0.
  • the downlink frequency unit is located in the downlink transmission frequency band, and the downlink transmission frequency band is not used for LTE uplink communication, so the downlink offset may be 0.
  • the downlink frequency unit is located in the uplink transmission frequency band, and the downlink offset and the uplink offset are both the first value or the second value.
  • the above-mentioned uplink transmission frequency band may be, for example, a section of frequency spectrum shared with LTE, then when the uplink transmission frequency band is used for LTE uplink communication, in order to ensure that the downlink frequency unit and the uplink frequency unit are aligned with the subcarrier boundaries of the LTE frequency unit, Both the downlink offset and the uplink offset are set to a second value, the second value may be, for example, 7.5kHz; in the case that the above-mentioned uplink transmission frequency band is not used for LTE uplink communication, the downlink offset and the uplink offset are all set as a first value, which may be 0, for example.
  • the second frequency unit includes NR uplink carriers transmitting NR uplink signals and/or NR downlink carriers transmitting NR downlink signals
  • the first frequency unit includes Passive IoT uplink carriers transmitting Passive IoT uplink signals and/or transmission Passive IoT downlink signal Passive IoT downlink carrier
  • the first frequency unit is located in the shared spectrum between NR and LTE.
  • the Passive IoT uplink carrier is located in the downlink transmission frequency band.
  • both the Passive IoT downlink carrier and the Passive IoT uplink carrier, and the LTE uplink carrier are located in the uplink transmission frequency band, then the downlink offset of the Passive IoT downlink carrier and The uplink offset of the Passive IoT uplink carrier is 7.5kHz; of course, if it is determined that the uplink transmission frequency band is not used for LTE uplink communication, the downlink offset and uplink offset can both be 0.
  • the NR downlink carrier is located in the downlink transmission frequency band, so the downlink offset of the NR downlink carrier can be 0; the NR uplink carrier is similar to the Passive IoT uplink carrier, and the uplink offset of the NR uplink carrier is the same as Passive IoT The uplink offsets of the uplink carriers are the same.
  • the first device determines the uplink offset and downlink offset based on the time-domain resource type of the signal carried by the downlink frequency unit and the time-domain resource type of the signal carried by the uplink frequency unit. Shift:
  • the downlink signal carried by the downlink frequency unit occupies downlink time-domain resources
  • the uplink signal carried by the uplink frequency unit occupies uplink time-domain resources.
  • the above-mentioned downlink offset and uplink offset are both the first value or the second value.
  • the second frequency unit includes an NR uplink carrier that transmits an NR uplink signal and/or an NR downlink carrier that transmits an NR downlink signal
  • the first frequency unit includes a Passive IoT uplink carrier that transmits a Passive IoT uplink signal and/or transmits a Passive IoT IoT downlink signal Passive IoT downlink carrier
  • the first frequency unit is located in the shared spectrum between NR and LTE.
  • the Passive IoT downlink signal is transmitted in the downlink time slot, and the Passive IoT uplink signal is transmitted in the uplink time slot.
  • both the Passive IoT uplink signal and the LTE uplink signal are transmitted in the uplink time slot, then
  • the uplink offset of the Passive IoT uplink carrier and the downlink offset of the Passive IoT downlink carrier are both 7.5kHz; of course, if it is determined that the uplink time slot is not used for LTE uplink communication, the uplink offset and downlink offset can be Both are 0.
  • the NR uplink carrier is similar to the Passive IoT uplink carrier, and the uplink offset of the NR uplink carrier is the same as that of the Passive IoT uplink carrier.
  • Example 2 In the case where the downlink signal carried by the downlink frequency unit and the uplink signal carried by the downlink frequency unit both occupy downlink time domain resources, the above-mentioned downlink offset and uplink offset are both first values. It is still assumed that the second frequency unit includes NR uplink carriers transmitting NR uplink signals and/or NR downlink carriers transmitting NR downlink signals, and the first frequency unit includes Passive IoT uplink carriers transmitting Passive IoT uplink signals and/or transmitting Passive IoT downlink signals Passive IoT downlink carrier, the first frequency unit is located in the shared spectrum between NR and LTE.
  • the Passive IoT downlink signal and the Passive IoT uplink signal are both transmitted in the downlink time slot, and the downlink time slot is not used for LTE uplink communication, then the uplink offset of the Passive IoT uplink carrier and the downlink offset of the Passive IoT downlink carrier Shifts are all 0.
  • Example 3 In the case where the downlink signal carried by the downlink frequency unit and the uplink signal carried by the uplink frequency unit both occupy uplink time domain resources, the above-mentioned downlink offset and uplink offset are both the first value or the second value. It is still assumed that the second frequency unit includes NR uplink carriers transmitting NR uplink signals and/or NR downlink carriers transmitting NR downlink signals, and the first frequency unit includes Passive IoT uplink carriers transmitting Passive IoT uplink signals and/or transmitting Passive IoT downlink signals Passive IoT downlink carrier, the first frequency unit is located in the shared spectrum between NR and LTE.
  • the Passive IoT downlink signal and the Passive IoT uplink signal are both transmitted in the uplink time slot.
  • both the Passive IoT uplink signal and the LTE uplink signal are transmitted in the uplink time slot
  • the uplink offset of the Passive IoT uplink carrier and the downlink offset of the Passive IoT downlink carrier are both 7.5kHz; if the uplink If the time slot is not used for LTE uplink communication, the uplink offset and downlink offset can both be 0.
  • the NR uplink carrier is similar to the Passive IoT uplink carrier, and the uplink offset of the NR uplink carrier is the same as that of the Passive IoT uplink carrier.
  • the downlink signal carried by the downlink frequency unit may be a carrier signal or downlink signaling/data.
  • the uplink offset of the above-mentioned uplink frequency unit may be the offset of the RF reference frequency ( FRER ) corresponding to the uplink frequency unit, and similarly, the downlink offset of the downlink frequency unit may be that of the downlink frequency unit The offset of the RF reference frequency.
  • the first device may determine the above-mentioned downlink frequency unit based on the downlink frequency position and the downlink offset, for example, the first device determines the downlink frequency unit according to the sum of the downlink frequency position and the downlink offset, and the uplink offset may be is a positive or negative value.
  • the first device may determine the above-mentioned uplink frequency unit based on the uplink frequency position and the uplink offset, for example, the first device determines the uplink frequency unit according to the sum of the uplink frequency position and the uplink offset. Or the first device may determine the above-mentioned uplink frequency unit based on the downlink frequency position, the uplink offset, and the frequency domain interval between the uplink frequency position and the downlink frequency position. The sum of frequency domain intervals between the uplink frequency position and the downlink frequency position determines the uplink frequency unit.
  • the uplink offset can be a positive value or a negative value
  • the frequency domain interval between the uplink frequency position and the downlink frequency position can be a positive value or a negative value.
  • each frequency information can be determined by the first device, or can be sent by the fourth device to The first device performs configuration, or may be defined by a protocol, so that the first device can determine the first frequency unit according to part or all of the frequency information.
  • the fourth device may send second configuration information to the first device, where the second configuration information is used to indicate at least one of the following: downlink frequency position, downlink offset, uplink frequency position, uplink offset and uplink frequency The frequency domain separation between the position and the downlink frequency position.
  • the first device may be implemented as a base station, and the fourth device may be implemented as a macro base station, or the first device may be implemented as a terminal device, and the fourth device may be implemented as a base station.
  • the second device may receive the first configuration information sent by the first device, and the second device may determine the first frequency unit according to the first configuration information.
  • the first configuration information may indicate a downlink frequency unit
  • the second device may receive a downlink signal from the first device on the downlink frequency unit.
  • the first configuration information may indicate a frequency domain interval between a downlink frequency position and an uplink frequency position, a downlink frequency unit, and an uplink offset.
  • the second device may determine the uplink frequency unit according to the frequency interval between the downlink frequency position and the uplink frequency position, the downlink frequency unit and the uplink offset.
  • the second device may determine the uplink frequency unit according to the frequency between the downlink frequency position and the uplink frequency position.
  • the sum of domain interval, downlink frequency unit and uplink offset determines the uplink frequency unit.
  • the first configuration information may indicate an uplink frequency unit
  • the second device may send an uplink signal to the first device on the uplink frequency unit.
  • the frequency information in the above-mentioned downlink frequency unit, uplink frequency unit, frequency domain interval between the downlink frequency position and the uplink frequency position, downlink frequency unit and uplink offset may also be defined by the protocol, or It may be predefined in the second device.
  • the first configuration information may not include part or all of the frequency information defined by the protocol and predefined in the second device.
  • the first device determines the first frequency unit according to the uplink offset and/or the downlink offset, so as to prevent the subcarriers of the first frequency unit from being different from those of other communication systems (such as the LTE system)
  • the boundaries of the subcarriers are not aligned (that is, the subcarriers are not orthogonal), which leads to mutual interference of data transmitted between communication systems.
  • the second device since the uplink transmission of Passive IoT adopts reflection communication, that is, the second device receives the downlink carrier signal at the same time while sending the uplink reflection signal, Then, the uplink transmission signal and the downlink carrier signal overlap in the time domain, so that the uplink transmission signal and the downlink carrier signal may both be located in the uplink time domain resource of the TDD transmission frequency band or both be located in the downlink time of the TDD transmission frequency point.
  • the ability of the second device to shift the frequency of the uplink reflected signal relative to the downlink carrier signal is limited.
  • the uplink carrying the uplink signal may be located in the uplink transmission frequency band, or both may be located in the downlink transmission frequency band. Both of the above two aspects may cause signal interference problems caused by different directions of sending and receiving between Passive IoT and NR.
  • the second frequency unit is a frequency unit used for uplink transmission.
  • the second frequency unit is located in the uplink transmission frequency band.
  • the uplink frequency unit in the first frequency unit is in the same direction as the second frequency unit.
  • the uplink frequency unit may be located in the transmission bandwidth of the second frequency unit, and the downlink frequency unit in the first frequency unit is located in the guard band of the second frequency unit due to a different direction from the second frequency unit.
  • the second frequency unit is a frequency unit used for downlink transmission, in other words, the second frequency unit is located in the downlink transmission frequency band. Since the uplink frequency unit in the first frequency unit is not in the same direction as the second frequency unit, it can be located in the guard band of the second frequency unit, and the downlink frequency unit in the first frequency unit can be located in the same direction as the second frequency unit. within the transmission bandwidth of the second frequency unit.
  • the first frequency unit is located in the TDD operating frequency band
  • the downlink signal transmitted by the downlink frequency unit and the uplink signal corresponding to the downlink signal transmitted by the uplink frequency unit both occupy downlink time domain resources
  • the downlink frequency unit is located in the second frequency unit Within the transmission bandwidth
  • the uplink frequency unit is located within the guard band of the second frequency unit.
  • the first frequency unit is located in the TDD operating frequency band
  • the downlink signal transmitted by the downlink frequency unit and the uplink signal corresponding to the downlink signal transmitted by the uplink frequency unit both occupy uplink time domain resources
  • the downlink frequency unit is located in the second frequency unit
  • the uplink frequency unit is located in the guard band of the second frequency unit.
  • the downlink frequency unit and uplink frequency unit in the first frequency unit are respectively deployed in the transmission bandwidth or guard band of the second frequency unit to avoid the first
  • the frequency unit and the second frequency unit have the problem of signal interference due to different directions of sending and receiving.
  • Fig. 15 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the apparatus 600 may include: a transceiver unit 610 and a processing unit 620 .
  • the communication apparatus 600 may correspond to the first device in the above method embodiment, for example, may be the first device, or a component configured in the first device (eg, a chip or a chip system, etc.).
  • the communication device 600 may correspond to the first device in the methods shown in FIG. 8 and FIG. A unit of a method performed by a device. Moreover, each unit in the communication device 600 and the above-mentioned other operations and/or functions are for implementing the corresponding processes of the methods in FIG. 8 and FIG. 11 .
  • the communication device 600 may include a transceiving unit 610 and a processing unit 620.
  • the transceiving unit 610 performs processing related to information transceiving, and the processing unit 620 performs other processing except information transceiving.
  • the processing unit 620 can be used to determine the first frequency unit; the transceiver unit 610 can be used to communicate with the second device on the first frequency unit; wherein , the granularity of the first channel grid corresponding to the first frequency unit is smaller than or equal to the granularity of the second channel grid corresponding to the second frequency unit, the second frequency unit is used for communication between the communication device and the third device, and the second frequency unit is used for communication between the communication device and the third device.
  • a frequency unit and the second frequency domain unit are located in the same working frequency band.
  • the communication apparatus 600 may also correspond to the second device in the above method embodiment, for example, may be the second device, or a component configured in the second device (eg, a chip or a chip system, etc.).
  • the transceiver unit 610 in the communication device 600 can be realized by a transceiver, for example, it can correspond to the transceiver 710 in the communication device 700 shown in FIG. 16
  • the processing unit 620 in the communication device 600 can be realized by at least one processor , for example, may correspond to the processor 720 in the communication device 700 shown in FIG. 16 .
  • the transceiver unit 610 in the communication device 600 can be implemented through an input/output interface, a circuit, etc.
  • the communication The processing unit 620 in the device 600 may be implemented by a processor, a microprocessor, or an integrated circuit integrated on the chip or the chip system.
  • Fig. 16 is another schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 700 may include: a transceiver 710 , a processor 720 and a memory 730 .
  • the transceiver 710, the processor 720 and the memory 730 communicate with each other through an internal connection path, the memory 730 is used to store instructions, and the processor 720 is used to execute the instructions stored in the memory 730 to control the transceiver 710 to send signals and /or to receive a signal.
  • the communication apparatus 700 may correspond to the first device or the second device in the above method embodiments, and may be used to execute various steps and/or processes performed by the first device or the second device in the above method embodiments.
  • the memory 730 may include read-only memory and random-access memory, and provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory.
  • the memory 730 can be an independent device, or can be integrated in the processor 720 .
  • the processor 720 may be used to execute instructions stored in the memory 730, and when the processor 720 executes the instructions stored in the memory, the processor 720 is used to execute the above-mentioned method embodiment corresponding to the first device or the second device individual steps and/or processes.
  • the communications apparatus 700 is the first device in the foregoing embodiments.
  • the communications apparatus 700 is the second device in the foregoing embodiments.
  • the transceiver 710 may include a transmitter and a receiver.
  • the transceiver 710 may further include antennas, and the number of antennas may be one or more.
  • the processor 720, the memory 730 and the transceiver 710 may be devices integrated on different chips.
  • the processor 720 and the memory 730 may be integrated in a baseband chip, and the transceiver 710 may be integrated in a radio frequency chip.
  • the processor 720, the memory 730 and the transceiver 710 may also be devices integrated on the same chip. This application is not limited to this.
  • the communication apparatus 700 is a component configured in the first device, such as a chip, a chip system, and the like.
  • the communication apparatus 700 is a component configured in the second device, such as a chip, a chip system, and the like.
  • the transceiver 720 may also be a communication interface, such as an input/output interface, a circuit, and the like.
  • the transceiver 720 , the processor 710 and the memory 730 may be integrated into the same chip, such as a baseband chip.
  • the present application also provides a processing device, including at least one processor, and the at least one processor is used to execute the computer program stored in the memory, so that the processing device executes the first setting in the above method embodiment A second device for performing the method.
  • the embodiment of the present application also provides a processing device, including a processor and an input/output interface.
  • the input-output interface is coupled with the processor.
  • the input and output interface is used for inputting and/or outputting information.
  • the information includes at least one of instructions and data.
  • the processor is configured to execute a computer program, so that the processing device executes the method performed by the first device in the above method embodiment and the second device.
  • the embodiment of the present application also provides a processing device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program from the memory, so that the processing device executes the method performed by the first device in the above method embodiment and the second device.
  • the above processing device may be one or more chips.
  • the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC), or a system chip (system on chip, SoC). It can be a central processor unit (CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (micro controller unit) , MCU), can also be a programmable controller (programmable logic device, PLD) or other integrated chips.
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processor
  • microcontroller micro controller unit
  • PLD programmable logic device
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components .
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which acts as external cache memory.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM direct memory bus random access memory
  • direct rambus RAM direct rambus RAM
  • the present application also provides a computer program product, the computer program product including: computer program code, when the computer program code is run on the computer, the computer is made to execute the first step in the above method embodiments A method performed by a device or a second device.
  • the application also provides a computer-readable storage medium, the calculation
  • the machine-readable storage medium stores program code, and when the program code is run on the computer, the computer is made to execute the method performed by the first device or the second device in the above method embodiments.
  • the present application further provides a communication system, where the communication system may include the foregoing first device and the second device.

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Abstract

本申请提供一种通信方法、装置、设备以及存储介质。该方法包括：第一设备确定第一频率单元，且第一设备在该第一频率单元上和第二设备进行通信。其中，第一频率单元对应的第一信道栅格的粒度小于或等于第二频率单元对应的第二信道栅格的粒度，第二频率单元用于第一设备和第三设备通信，第一频率单元与第二频域单元位于同一个工作频带。一方面，本申请实施例为频率单元的确定提供了一种解决方案，使第一设备和第二设备可以通过第一频率单元实现通信；另一方面，在确定频率单元时，考虑信道栅格的粒度，将第一频率单元对应的第一信道栅格的粒度设置的更小，从而提高第一频率单元部署的灵活性。

Description

通信方法、装置、设备以及存储介质
本申请要求于2022年1月30交中国专利局、申请号为202210114704.6、申请名称为“通信方法、装置、设备以及存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法、装置、设备以及存储介质。
背景技术
随着机器型通信(machine-type communication,MTC)和物联(internet of things,IoT)通信的广泛应用。通过在有些通信系统中，如长期演进(Long Term Evolution，LTE)系统、新空口(New Radio，NR)系统中，支持射频识别(radio frequency identification，RFID)和唤醒接收机/唤醒无线电(wake-up receiver or wake-up radio，WUR)等技术，来降低IoT应用成本和功耗。为了满足这种需求，如何将RFID、WUR技术应用于各通信系统是当前亟待解决的问题。而无论基于何种技术，对于设备间的通信，都需要先确定用于通信的频率单元。
发明内容
本申请实施例提供的一种通信方法、装置、设备以及存储介质，为如何确定设备间通信的频率单元提供一种解决方案。
第一方面，本申请实施例提供一种通信方法，该方法包括：第一设备确定第一频率单元；该第一设备在该第一频率单元上和第二设备进行通信；其中，该第一频率单元对应的第一信道栅格的粒度小于或等于第二频率单元对应的第二信道栅格的粒度，该第二频率单元用于第一设备和第三设备通信，该第一频率单元与该第二频域单元位于同一个工作频带。
通过第一方面提供的通信方法，在第一设备与不同设备进行通信时，确定第一设备与第二设备进行通信的第一频率单元，该第一频率单元与用于第一设备和第三设备进行通信的第二频率单元位于同一工作频带，且第一频率单元对应的第一信道栅格的粒度小于或等于第二信道栅格的粒度。一方面，本申请实施例为频率单元的确定提供了一种解决方案，使第一设备和第二设备可以通过第一频率单元实现通信；另一方面，在确定频率单元时，考虑信道栅格的粒度，可以将第一频率单元对应的第一信道栅格的粒度设置的更小，从而提高第一频率单元部署的灵活性。
上述第一设备与其他设备进行通信，可以是发送信号，也可以是接收信号。
在一种可能的实施方式中，该第一频率单元内的第一信道栅格所在的频率位置对应该第一频率单元内一个资源元素的频率位置，该资源元素在频域上的索引根据该第一频率单元的传输带宽或者该第二频率单元的传输带宽确定。
通过该实施方式提供的通信方法，便于第一设备确定第一信道栅格对应的资源元 素的频率位置。
在一种可能的实施方式中，该第一频率单元的资源块和该第二频率单元的资源块边界对齐，或者，该第一频率单元的子载波和该第二频率单元的子载波边界对齐。
通过该实施方式提供的通信方法，第一频率单元的RB应与第二频率单元的RB边界对齐，避免造成资源碎片，降低频谱使用效率；第一频率单元的子载波可以和第二频率单元的子载波边界对齐，避免因子载波不正交导致对第二频率单元的传输带宽内的数据传输造成干扰。
在一种可能的实施方式中，该第一频率单元包括于该第二频率单元的传输带宽内，该第一频率单元的资源块和该第二频率单元的资源块边界对齐；或者，该第一频率单元包括于该第二频率单元的保护带内，该第一频率单元的子载波和该第二频率单元的子载波边界对齐；或者，该第一频率单元不包括于该第二频率单元，该第一频率单元和该第二频率单元之间的频域间隔小于阈值，该第一频率单元的子载波和该第二频率单元的子载波边界对齐。
通过该实施方式提供的通信方法，第一频率单元包括于第二频率单元的传输带宽内的情况下，第一频率单元的RB应与第二频率单元的RB边界对齐，可以避免造成资源碎片、降低频谱使用效率；而第一频率单元不包括于第二频率单元的传输带宽内的情况下，第一频率单元的子载波可以和第二频率单元的子载波边界对齐，可以避免因子载波不正交导致对第二频率单元的传输带宽内的数据传输造成干扰。
在一种可能的实施方式中，该第一信道栅格的粒度为根据以下至少之一确定：该第一频率单元的部署模式；该第一频率单元的子载波间隔。
通过该实施方式提供的通信方法，根据第一频率单元的部署模式和/或第一频率单元的子载波间隔，确定第一信道栅格的粒度，使第一信道栅格的粒度能够适用于当前通信，例如在满足第一频率单元部署的灵活性的情况下，第一信道栅格的粒度不需设置的过小。
在一种可能的实施方式中，在同一个工作频带内，该第二信道栅格的粒度为100kHz，该第一信道栅格的粒度为5kHz、10kHz或20kHz的整数倍。
通过该实施方式提供的通信方法，可以提高第一频率单元部署的灵活性。
在一种可能的实施方式中，该第一频率单元对应的射频参考频率FREF满足：FREF＝FREF-Offs+ΔFGlobal(NREF–NREF-Offs)+offset；其中，FREF-Offs为射频参考频率偏移值，ΔFGlobal为全局信道栅格的粒度，NREF为新空口绝对无线电频率信道编号NR-ARFCN，NREF-Offs为NR-ARFCN偏移值，offset为频率偏移量，offset的取值为{-50，-45，-40，-35，-30，-25，-20，-15，-10，-5，0,5,10,15,20,25,30,35,40,45,50}kHz中的一项。
通过该实施方式提供的通信方法，基于如上取值的offset，确定射频参考频率，以实现对较小的第一信道栅格粒度的确定，提高了第一频率单元部署的灵活性。
在一种可能的实施方式中，该第一频率单元包括用于传输上行信号的上行频率单元，和/或，用于传输下行信号的下行频率单元；该第一设备确定第一频率单元，包括：该第一设备根据上行频率位置和上行偏移量，确定该上行频率单元；和/或，该第一设备根据下行频率位置和下行偏移量，确定该下行频域单元；该第一设备确定第一频率 单元之前，包括：该第一设备根据该下行频率单元所在的频带类型、该第二设备的第一能力、该第二设备的类型、该下行频率单元承载的信号所在的时域资源类型、该上行频率单元承载的信号所在的时域资源类型中的至少一项，确定该上行偏移量和/或该下行偏移量，其中，该第一能力为是否支持将该上行信号移频至该下行频率单元所在的下行传输频带之外的上行传输频带。
通过该实施方式提供的通信方法，第一设备根据上行偏移量和/或下行偏移量，确定第一频率单元，避免第一频率单元的子载波与其他通信系统(例如LTE系统)的子载波边界不对齐(也即子载波不正交)，而导致各通信系统之间传输数据相互干扰的情况。
在一种可能的实施方式中，该下行频率单元位于该下行传输频带，该第一能力为支持将该上行信号移频至该下行传输频带之外的上行传输频带，该上行偏移量为第一数值或第二数值；或者，该第一能力为不支持将该上行信号移频至该下行传输频带之外的上行传输频带，该上行偏移量为该第一数值；或者，该下行频率单元位于上行传输频带，该下行偏移量和该上行偏移量均为第一数值或第二数值。
通过该实施方式提供的通信方法，在第二设备支持将上行信号搬移至上行传输频带时，与其他通信系统(例如LTE系统)的上行载波可能处于同一传输频带，此种情况下需要确定上行偏移量为第二数值(即第一频率单元需要偏移)或者为第一数值(即第一频率单元不需要偏移)，以避免二者之间子载波边界不对齐。
在一种可能的实施方式中，该下行传输频带和该上行传输频带位于同一工作频带。
通过该实施方式提供的通信方法，更适用于FDD模式下，上行偏移量和/或下行偏移量的确定。
在一种可能的实施方式中，该下行传输频带和该上行传输频带位于不同工作频带。
通过该实施方式提供的通信方法，针对下行传输频带和上行传输频带不是FDD模式下成对的传输频带的场景，确定上行偏移量和/或下行偏移量。
在一种可能的实施方式中，该上行传输频带用于LTE上行通信，该上行偏移量为第二数值；或，该上行传输频带不用于LTE上行通信，该上行偏移量为第一数值。
通过该实施方式提供的通信方法，在上行传输频带用于LTE上行通信时，第一频率单元需要偏移以实现与LTE系统的频率单元的子载波边界对齐，在上行传输频带不用于LTE上行通信时，第一频率单元与LTE系统的频率单元之间不存在子载波边界对齐的问题，不需要进行偏移。
在一种可能的实施方式中，该第一频率单元位于TDD工作频带，该下行信号占用下行时域资源，且该上行信号占用上行时域资源，该下行偏移量和该上行偏移量均为第一数值或第二数值；或者该下行信号和该上行信号均占用下行时域资源，该下行偏移量和该上行偏移量均为第一数值；或者该下行信号和该上行信号均占用上行时域资源，该下行偏移量和该上行偏移量均为第一数值或第二数值。
通过该实施方式提供的通信方法，在上行频率单元承载的上行信号与其他通信系统(例如LTE系统)的上行信号可能均在上行时域资源上传输时，需要进一步确定第一频率单元是否需要基于上/下行偏移量进行频率偏移，避免第一频率单元与其他通信系统的频率单元子载波边界不对齐。
在一种可能的实施方式中，该上行时域资源用于LTE上行通信，该下行偏移量和该上行偏移量为第二数值；或，该上行时域资源不用于LTE上行通信，该下行偏移量和该上行偏移量为第一数值。
通过该实施方式提供的通信方法，在确定上行时域资源用于LTE上行通信的情况下，确定第一频率单元需要基于上/下行偏移量进行频率偏移避免第一频率单元与LTE频率单元子载波边界不对齐，反之则不需要进行频率偏移。
在一种可能的实施方式中，该第一数值为0，该第二数值为7.5kHz。
通过该实施方式提供的通信方法，上行偏移量/下行偏移量为0，表示第一频率单元不需要基于上行偏移量/下行偏移量进行偏移；在第一频率单元不需要基于上行偏移量/下行偏移量进行偏移时，上行偏移量/下行偏移量为7.5kHz可以保证第一频率单元与LTE系统的子载波边界对齐。
在一种可能的实施方式中，该方法还包括：该第一设备接收第一配置信息，该第一配置信息用于指示以下之一：该上行偏移量；该下行偏移量；该下行频率位置与所述上行频率位置之间的频域间隔。
通过该实施方式提供的通信方法，降低了第一设备的系统开销。
在一种可能的实施方式中，该第二频率单元位于上行传输频带，该第一频率单元中的上行频率单元位于该第二频率单元的传输带宽内，该第一频率单元中的下行频率单元位于该第二频率单元的保护带内；或者，该第二频率单元位于下行传输频带，该下行频率单元位于该第二频率单元的传输带宽内，该上行频率单元位于该第二频率单元的保护带内；或者，该第一频率单元位于TDD工作频带，该下行频率单元传输的下行信号和该上行频率单元传输的、该下行信号对应的上行信号均占用下行时域资源，该下行频率单元位于该第二频率单元的传输带宽内，该上行频率单元位于该第二频率单元的保护带内；或者，该第一频率单元位于TDD工作频带，该下行频率单元传输的下行信号和该上行频率单元传输的、该下行信号对应的上行信号均占用上行时域资源，该下行频率单元位于该第二频率单元的保护带内，该上行频率单元位于该第二频率单元的保护带内。
通过该实施方式提供的通信方法，针对可能存在收发不同向问题的各种场景，将第一频率单元中的下行频率单元和上行频率单元分别部署于第二频率单元的传输带宽内或者保护带内，避免第一频率单元与第二频率单元由于收发不同向而导致信号干扰的问题。
在一种可能的实施方式中，该方法还包括：该第一设备向该第二设备发送第一配置信息，该第一配置信息用于指示以下至少之一：该上行偏移量；该下行频率位置与该上行频率位置之间的频域间隔；该上行频率单元。
通过该实施方式提供的通信方法，一方面，可以实现第一设备对第二设备的灵活配置，同时降低了第二设备的系统开销；另一方面，第一设备为第二设备提供自身能力下无法确定的参数，以便于实现第二设备与第一设备之间的通信。
第二方面，本申请实施例提供一种通信装置，该通信装置可以执行上述第一方面中的各个步骤。比如，该通信装置可以包括：处理单元，用于确定第一频率单元；收发单元，用于在该第一频率单元上和第二设备进行通信；其中，该第一频率单元对应 的第一信道栅格的粒度小于或等于第二频率单元对应的第二信道栅格的粒度，该第二频率单元用于该通信装置和第三设备通信，该第一频率单元与该第二频域单元位于同一个工作频带。
上述第二方面以及上述第二方面的各可能的实施方式所提供的通信装置，其有益效果可以参见上述第一方面以及第一方面的各可能的实施方式所带来的有益效果，在此处不再赘述。
第三方面，本申请实施例提供一种通信设备，包括：处理器和存储器，该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行如第一方面或各可能的实现方式中的方法。
第四方面，本申请实施例提供一种芯片，包括：处理器，用于从存储器中调用并运行计算机指令，使得安装有该芯片的设备执行如第一方面或各可能的实现方式中的方法。
第五方面，本申请实施例提供一种计算机可读存储介质，用于存储计算机程序指令，该计算机程序使得计算机执行如第一方面或各可能的实现方式中的方法。
第六方面，本申请实施例提供一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行如第一方面或各可能的实现方式中的方法。
附图说明
图1示出了适用于本申请实施例的一种通信系统；
图2a为本申请提供的一种RFID通信系统的示意图；
图2b为本申请提供的一种分离式架构的RFID通信系统的示意图；
图2c为本申请提供的一种集中式架构的RFID通信系统的示意图；
图3a为本申请提供的一种WUR通信的示意图；
图3b为本申请提供的另一种WUR通信的示意图；
图4为本申请提供的一种包络检波示意图；
图5为本申请提供的一种反射通信的示意图；
图6为本申请提供的一种公共资源块的示意图；
图7为本申请提供的一种部分带宽与载波之间频域位置关系的示意图；
图8为本申请实施例提供的一种通信方法400的交互流程示意图；
图9a为本申请实施例提供的一种频率单元部署模式的示意图；
图9b为本申请实施例提供的另一种频率单元部署模式的示意图；
图9c为本申请实施例提供的另一种频率单元部署模式的示意图；
图10为本申请实施例提供的一种频率单元的示意图；
图11为本申请实施例提供的一种通信方法500的交互流程图；
图12a为本申请实施例提供的一种FDD模式上/下行传输的示意图；
图12b为本申请实施例提供的另一种FDD模式上/下行传输的示意图；
图12c为本申请实施例提供的另一种FDD模式上/下行传输的示意图；
图13a为本申请实施例提供的一种TDD模式上/下行传输的示意图；
图13b为本申请实施例提供的另一种TDD模式上/下行传输的示意图；
图13c为本申请实施例提供的另一种TDD模式上/下行传输的示意图；
图14a为本申请实施例提供的一种上/下行频率单元部署模式的示意图；
图14b为本申请实施例提供的另一种上/下行频率单元部署模式的示意图；
图14c为本申请实施例提供的另一种上/下行频率单元部署模式的示意图；
图14d为本申请实施例提供的另一种上/下行频率单元部署模式的示意图；
图15是本申请实施例提供的通信装置的示意性框图；
图16是本申请实施例提供的通信装置的另一示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请提供的通信方法可以应用于各种通信系统，例如：宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、新空口(New Radio，NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)系统、非地面通信网络(Non-Terrestrial Networks，NTN)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WIFI)、第五代通信(5th-Generation，5G)系统或其他通信系统等。
终端设备可以是WLAN中的站点(STATION，ST)，可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、下一代通信系统例如NR网络中的终端设备，或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的终端设备等。
在本申请实施例中，终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备或智慧家庭(smart home)中的无线终端设备等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。
在本申请实施例中，网络设备可以是用于与移动设备通信的设备，网络设备可以是WLAN中的接入点(Access Point，AP)，GSM或CDMA中的基站(Base Transceiver  Station，BTS)，也可以是WCDMA中的基站(NodeB，NB)，还可以是LTE中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者车载设备、可穿戴设备以及NR网络中的网络设备或者基站(gNB)或者未来演进的PLMN网络中的网络设备或者NTN网络中的网络设备等。
在本申请实施例中，网络设备可以为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(Small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
应理解，本申请对于网络设备和终端设备的具体形式均不做限定。
为便于理解本申请实施例，首先结合图1详细说明适用于本申请实施例的通信系统。图1示出了适用于本申请实施例的通信方法的通信系统的示意图。如图1所示，通信系统100可以包括网络设备和终端设备，网络设备和终端设备的数量均可以是一个或者多个，例如图1中所示的网络设备111和112、终端设备121至128，在该通信系统100中，网络设备111可以与终端设备121至126中的一个或多个终端设备通过无线空口通信，网络设备111可以通过网络设备112与终端设备127和128中的一个或多个终端设备进行通信。此外，终端设备124至126可以组成通信系统101，在该通信系统101中，终端设备124可以与终端设备125和126中的一个或多个终端设备通过无线空口通信、网络设备112与终端设备127和128可以组成通信系统102，在该通信系统102中，网络设备112可以与终端设备127和128中的一个或多个终端设备通过无线空口通信。
应理解，通信系统101可以是通信系统100的子系统，或者独立于通信系统100的通信系统；通信系统102可以是通信系统100的子系统，或者独立于通信系统100的通信系统。
还应理解，图1仅为示例，示出了通信系统100中两个网络设备和八个终端设备，通信系统101中的三个终端设备，通信系统102中的一个网络设备和两个终端设备。但这不应对本申请构成任何限定。上述任一通信系统可以包括更多或更少的网络设备，或者包括更多或更少的终端设备。本申请实施例对此不做限定。
随着5G NR系统MTC和物联(internet of things，IoT)通信的普及，越来越多的IoT设备已经部署在人们的生活中。例如：智能水表、共享单车，以及智慧城市、环境监测、智能家居、森林防火等以传感和数据采集为目标的设备等等。而未来，IoT设备将是无处不在的，可能会嵌入每一件衣服、每一个包裹、每一把钥匙，几乎所有的离线物品都将在物联网技术的赋能下实现在线。
为了能进一步普及IoT，把IoT模块植入人体内，或者更小的物件中，则必须使用更小的电池甚至彻底摆脱电池的限制，或者是设计一种降低无线电收发器功耗的方法，进而来克服IoT设备的成本、尺寸、功耗等的限制问题。因此，在5G NR系统中引入无源(Passive)IoT和WUR。Passive IoT是从目前大量且成熟使用RFID技术中得出启发后应运而生。因为省去了电源模块，所以无源RFID产品的体积可以达到厘米量 级甚至更小，而且自身结构简单，成本低，故障率低，使用寿命较长。
下面首先对RFID技术和WUR技术进行说明。
一、RFID技术：是一种非接触式的自动识别技术，其可以通过射频信号自动识别目标对象并获取相关数据。
通常情况下，RFID系统由阅读器(reader)和标签(tag)组成。结合图2a所示，阅读器通过向标签发送激励信号为标签进行充能，标签接收阅读器发送的信令，并以反射通信的方式向阅读器发送反射信号。通过这种方式，阅读器可以识别标签的标识(identity document，ID)，以及对标签进行读写等操作。
需要说明的是，阅读器向标签发送的激励信号可以是下文中的下行信号或下行信号中的一种，反射信号可以是下文中的上行信号或上行信号中的一种。标签以反射通信的方式向阅读器发送反射信号，具体可以是，标签利用下行信号提供的载波进行上行信号的传输。
目前，为了扩展RFID的有效工作距离，通常采用以下两种方式：
方式1、分离式架构：结合图2b所示，分离式的阅读器包括辅助器(helper)和接收器(receiver)。helper通过前向链路向标签发送激励信号，receiver通过反向链路从标签接收反射信号，另外receiver生成RFID相关的下行信令，并通过前传链路向helper发送下行信令，再由helper在前向链路上进行转发。
方式2、集中式或一体式架构：结合图2c所示，除了阅读器与标签间通过前向链路和反向链路进行信号的激励和反射之外，阅读器还与集中控制单元(如基站)进行通信，集中控制单元可以对阅读器使用的前向链路的资源和发送行为进行的调度、控制等。
本申请实施例中，为了实现在NR系统中支持RFID，上述方式1中的helper和receiver之间，以及上述方式2中的阅读器和集中控制单元之间可以通过NR技术进行通信。
二、WUR技术：功耗大的主连接无线电(primary connection radio，PCR)，也可以称作主接收机，进入休眠状态后，通过功耗低的伴连接无线电(Companion Radio)，也称作唤醒接收机(WUR)监听AP发送的唤醒帧，在监听到唤醒帧后对PCR进行唤醒。
结合图3a所示，接收端设备310中部署有主接收机311和唤醒接收机312。在发射端设备320(例如AP或者终端设备)未发送数据时，主接收机关闭，也称作处于休眠状态，唤醒接收机开启；结合图3b所示，在发射端设备320发送数据时，首先发送唤醒数据(例如上述唤醒帧)，接收端设备310通过唤醒接收机311接收到唤醒数据后激活主接收机312，使主接收机开启，也称作处于激活状态，此时接收端设备310通过主接收机311接收发射端设备320在唤醒数据后发送的数据。
需要说明的是，唤醒机的信息比特被调制成开关键(on-off keying，OOK)符号。在接收端设备侧，OOK解调不需要频域和时域上的任何信道均衡，因此接收端设备通过唤醒接收机进行非相干检测(如包络检测)进行监听。使用非相干检测，接收端设备不需要保持/跟踪高精度的振荡速率。因此，可以避免锁相环，进一步降低接收侧功耗。
应理解的是，OOK符号仅为WUR唤醒帧的一种示例，并不对本申请构成任何限 定。
针对NR系统中应用的RFID技术，例如可以称作无源(Passive)IoT。本申请提供的Passive IoT与RFID的传输机制类似。在Passive IoT中，Passive IoT设备(例如标签)可以是无源(Batter Free)的，即Passive IoT设备自身不配备或不主要依赖于电池或者有线电源来供电。但是，Passive IoT设备不具备电源模块并不意味着不需要用电，Passive IoT设备可以从环境光、热量、射频中获取能量，从而支撑起物联网数据的感知、无线传输和分布式的计算等等。Passive IoT设备也可以是储能无源的，还可以是半无源的。储能无源设备有储能设备。半无源设备有电池，但电池供电仅对标签内要求供电维持数据的电路或者标签芯片工作所需电压的辅助支持，本身耗电很少的标签电路供电，电池尺寸也相对较小。
参考图4和图5，图4和图5示例性示出Passive IoT通信中的上下行通信方法示意图。
如图4所示，图4示例性示出Passive IoT下行通信方法示意图。
标签通过下行链路向阅读器发送调幅信号，标签接收该调幅信号，可以采用包络检波器，对该调幅信号进行包络检波，获取其中的低频信号。包络检波器的主要组成部分包括图4所示的二极管和电阻-电容电路(resistor-capacitance circuit，RC)，也即振荡电路。
可以理解的是，图4所示出的包络检波电路为最传统的基础电路结构示意图，关于包络检波电路的演进结构，在此在暂不赘述。本申请实施例对标签采用的包络检波电路结构不作限制。
如图5所示，图5示例性示出Passive IoT上行通信方法示意图。
标签自身无法提供电源，也无条件连接有线电源，来供标签进行数据传输。所以标签需要从外接环境中获取能量，进而提供标签进行数据传输，以及数据处理等其他操作。
具体的，当标签接收阅读器发出的载波信号，可以利用空间中产生的电磁场得到的能量，驱动芯片将自身存储的信息传送出去。
可以理解的是，图5所示的Passive IoT通信中上行通信方法仅为示例，在本申请另一些实施例中，标签还可以通过获取环境光、热等能量，来驱动芯片将自身存储的信息传送出去。如前所述，标签也可以是储能无源设备或者半无源设备。
应理解，Passive IoT仅为一种示例性的名称，当其替换为其他表述时也属于本申请保护范围。
还应理解，上述Passive IoT场景下的信息交互流程、信令格式仅为一种示例，而非限制性的说明。
目前，为了使RFID、WUR或者其类似技术能够应用于各通信系统，第一设备(例如阅读器、AP、发送侧终端设备)之间，如何在NR系统中确定频率单元，并在该频率单元上进行上行数据或下行数据的传输是当前亟待解决的问题。
针对上述问题，本申请实施例提供一种频率单元的确定方案，使第一设备和第二设备之间能够在NR系统、LTE系统或其他类似的通信系统中进行通信。当然，本申请提供的频率单元的确定方案不限于上述RFID、WUR或其类似的技术，无论基于何 种技术，对于设备间的通信，均可以基于本申请实施例提供的方案确定用于通信的频率单元。
进一步地，本申请实施例中，第一设备与不同设备之间通信的频率单元(例如用于与第二设备通信的第一频率单元和用于与第三设备通信的第二频率单元)位于同一个工作频带，在确定频率单元时，考虑信道栅格的粒度，比如将第一频率单元对应的第一信道栅格的粒度设置的更小，从而提高频率单元部署的灵活性。
为便于理解本申请实施例，首先对本申请中涉及的术语作简单说明。
1、工作频带：
在5G NR中，定义了两种频率范围，包括频率范围(frequency range，FR)1个FR2。其中FR1表示低频频段，FR2表示毫米波高频频段。
例如，NR可以工作在如下表1所示的FR1的工作频带，FR1包括多个NR的工作频带。各工作频带有对应的编号、上行传输(例如终端到基站的传输)的下频率边界和上频率边界、下行传输(例如基站到终端的传输)的下频率边界和上频率边界、双工模式。如表1所示，编号为n1的工作频带，其上行传输的下频率边界FUL_low为1920MHz、上行传输的上频率边界FUL_high为1980MHz，其下行传输的下频率边界FDL_low为2110MHz、下行传输的上频率边界FDL_high为2170MHz，其采用的双工模式为频分双工(frequency division duplexing，FDD)；再如表1所示，编号为n39的工作频带，其上行传输和下行传输的下频率边界均为1880MHz、上行传输和下行传输的上频率边界均为1920MHz，其采用的双工模式为时分双工(time division duplexing，TDD)。
表1



除上述FDD和TDD的双工模式之外，NR采用的双工模式还可以包括如表1所示的补充下行(supplementary downlink，SDL)，用于增加NR的下行覆盖，以及补充上行(supplementary uplink，SUL)，用于增加NR的上行覆盖。SDL和SUL均是独立的非成对存在的工作频带。
2、参数集(numerology)：在NR系统中，为适应多种不同子载波间隔的OFDM波形，引入了参数集，使得子载波间隔不受局限，能够根据不同的使用场景进行适配。
NR系统支持的传输参数集如下表2所示：
表2
其中，Δf为子载波间隔，μ为大于或等于0的整数。
2、天线端口：天线端口被定义为使得在该天线端口上传输的一个符号的信道可以从在相同天线端口上传输的另一个符号的信道推断出来，换言之，同一天线端口传输的不同信号所经历的信道环境是一样的。
3、资源格(resource grid)或称作资源网格：一个资源格对应于一个参数集和载波，该资源格包括个子载波和个OFDM符号，其中，表示子载波间隔配置为μ时一个资源格内的资源块(resource element，RB)数。表示一个RB中的子载波数。可选的，个连续子载波。
应理解，每个传输方向(上行链路或下行链路)有一组资源格。对于给定的天线端口p、子载波间隔配置μ和传输方向(下行链路或上行链路)，存在一个资源格。
资源格的起始资源块为公共资源块(common resource block,CRB)。
4、资源元素(resource element，RE)：用于天线端口p和子载波间隔配置μ的资源格中的每个元素称为资源元素，并由(k,l)p,μ唯一标识，其中k是RE在频域中的索引，l为RE的符号在时域中相对于某参考点的位置。资源元素(k,l)p,μ对应一个物理资源和 复数值当没有混淆的风险，或者没有指定特定的天线端口或子载波间隔时，索引p和μ可能会被丢弃，导致或ak,l。
5、公共资源块(common resource blocks)：对于子载波间隔配置μ，公共资源块在频域中从0开始向上编号。子载波间隔配置μ的公共资源块0的子载波0的中心频点与资源格的公共参考点point A重合，参见图6。
6、物理资源块(physical resource blocks)：子载波间隔配置μ的物理资源块定义在一个部分带宽(bandwidth part，BWP)内。
7、BWP：对于一个给定(given)载波(carrier)上的BWP i中的给定参数集μi，BWP是连续的CRBs的子集。BWP和载波之间的频率位置关系可以如图7所示。
一般来说，一个终端设备在下行链路中可以配置多达四个BWP，其中一个下行BWP在给定时间处于活动状态；一个终端设备在上行链路中可以配置多达四个BWP，其中一个上行BWP在给定时间处于活动状态。如果终端设备配置有补充(supplementary)上行链路，则该终端设备在补充上行链路中可以另外配置多达四个带宽部分，其中单个补充上行BWP在给定时间是活动的。
8、全局频率栅格(global frequency raster)
NR系统中，全局频率栅格定义了一组射频(radio frequency，RF)参考频率FREF。RF参考频率用于信令中以识别RF信道、同步信号(synchronization signal，SS)块和其他元素的位置。全局频率栅格是为0到100GHz的所有频率定义的。全局频率栅格的粒度为ΔFGlobal。
频率范围为0-24250MHz时，RF参考频率由全球频率栅格上范围(0～2016666)内的NR绝对无线电频率信道编号(NR absolute radio frequency channel number，NR-ARFCN)指定。NR-ARFCN和RF参考频率FREF(MHz)之间的关系由以下等式给出，其中FREF-Offs和NRef-Offs在表3中给出，NREF是NR-ARFCN。
FREF＝FREF-Offs+ΔFGlobal(NREF–NREF-Offs)
表3
9、信道栅格
NR系统中，信道栅格定义了射频参考频率的子集，可用于识别上行传输和下行传输中的射频信道位置。一个RF信道的RF参考频率映射到载波上的一个资源元素上。对于每个工作频段，来自全局频率栅格的频率子集适用于该频段，并形成粒度为ΔFRaster的信道栅格，其可能等于或大于ΔFGlobal。比如，对于具有100kHz信道栅格的NR工作频段，ΔFRaster＝20×ΔFGlobal，比如工作频带n1，n2等。NR系统中每个工作频带的信道栅格及可应用的NR-ARFCN参见3GPP TS38.101-1 V17.3.0中表格5.4.2.3-1，频带n46和频带n47上允许的NR-ARFCN分别参见3GPP TS38.101-1 V17.3.0 中表格5.4.2.3-2和表格5.4.2.3-3。考虑篇幅限制，如下表4仅为上述表格5.4.2.3-1的节选。
表4
信道栅格上的RF参考频率与相应资源元素之间的映射可以参见如下表5，基于表5所示的映射关系，可确定RF信道位置。该映射取决于RF信道中分配的资源块(resource block，RB)总数NRB，例如，RF信道中分配的NRB为偶数，则RF信道位于物理资源块编号为资源元素索引为k＝0的资源元素上，或者，RF信道中分配的NRB为奇数，则RF信道位于物理资源块索引为资源元素索引为k＝6的资源元素上。
该RF参考频率与资源元素的映射关系适用于NR系统的上行链路(uplink，UL)和下行链路(downlink，DL)。
表5
其中，a mod b表示a除以b得到的余数。
为便于理解本申请实施例，做出如下几点说明：
第一，在下文示出的实施例中，第一、第二以及各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围。例如，区分不同的设备、频率单元、信道栅格等。
第二，本申请实施例中涉及的“协议”可以是指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。
第三，在本申请实施例中，“当……时”、“在……的情况下”、“若”以及“如果”等描述均指在某种客观情况下设备(如，网络设备或者终端设备)会做出相应的处理，并非是限定时间，且也不要求设备(如，网络设备或者终端设备)在实现时一定要有判断的动作，也不意味着存在其它限定。
下面将结合附图对本申请实施例提供的侧行传输方法做详细说明。
应理解，下文仅为便于理解和说明，以第一设备、第二设备之间的交互为例详细说明本申请实施例所提供的方法。
其中，第一设备例如可以是上述标签，或者部署有标签相关装置(或者说具有标签相关功能)的终端设备；第二设备可以是上述阅读器，或者部署有阅读器相关装置(或者说具有阅读器相关功能)的终端设备，或者部署有阅读器相关装置的网络设备。当第一设备是部署有标签相关装置的终端设备，第二设备是部署有阅读器相关装置的终端设备时，该第一设备可以是图1中的终端设备125或126，第二设备可以是图1中的终端设备124；当第一设备是部署有标签的终端设备，第二设备是部署有阅读器的网络设备时，该第一设备可以是图1中的终端设备121至123中的任意一个，第二设备可以是图1中的网络设备111，或者第一设备可以是图1中的终端设备127或128，第二设备可以是图1中的网络设备112。
第一设备例如可以是上述唤醒机，或者部署有唤醒机的终端设备，第二设备例如可以是网络设备(例如基站、AP等)或者终端设备。当第一设备是部署有唤醒机的终端设备，第二设备是终端设备时，该第一设备可以是图1中的终端设备125或126，第二设备可以是图1中的终端设备124；当第一设备是部署有唤醒机的终端设备，第二设备是网络设备时，该第一设备可以是图1中的终端设备121至123中的任意一个，第二设备可以是图1中的网络设备111，或者第一设备可以是图1中的终端设备127或128，第二设备可以是图1中的网络设备112。
本申请实施例中还包括第三设备，第一设备与第二设备和第三设备之间分别采用不同的频率单元进行通信。第三设备可以是网络设备或终端设备，本申请对此不做限定。
但应理解，这不应对本申请提供的方法的执行主体构成任何限定。只要能够通过 运行记录有本申请实施例提供的方法的代码的程序，以根据本申请实施例提供的方法，便可以作为本申请实施例提供的方法的执行主体。例如，下文实施例所示的第一设备也可以替换为该第一设备中的部件，比如芯片、芯片系统或其他能够调用程序并执行程序的功能模块。第二设备也可以替换为该第二设备中的部件，比如芯片、芯片系统或其他能够调用程序并执行程序的功能模块等。第三设备也可以替换为该第三设备中的部件，比如芯片、芯片系统或其他能够调用程序并执行程序的功能模块等。
图8为本申请实施例提供的一种通信方法400的交互流程示意图。如图8所示，该方法400可以包括S410-1、S410-2、S420-1和S420-2中的部分或者全部步骤。下面对方法400中的各个步骤做详细说明。
S410-1，第一设备确定第一频率单元；
S410-2，第二设备确定第一频率单元；
S420-1，第一设备在第一频率单元向第二设备发送下行信号；相应的，第二设备在第一频率单元接收来自第一设备的下行信号；
S420-2，第二设备在第一频率单元向第一设备发送上行信号；相应的，第一设备在第一频率单元接收来自第二设备的上行信号。
换一句话说，该第一设备确定该第一频率单元用于与该第二设备通信。该通信可以是发送信号，也可以是接收信号。
本申请对上述S410-1和S410-2的执行顺序不作限定。当第二设备需要根据第一设备的配置确定第一频率单元时，上述S410-2可以在S410-1之前执行。
上述S420-1和S420-2可以择一执行，或者依次执行，例如第二设备接收第一设备发送的下行信号后，向第一设备发送上行信号。以实现第一设备与第二设备在第一频率单元上进行通信。
其中，该第一频率单元对应的第一信道栅格的粒度小于或等于第二频率单元对应的第二信道栅格的粒度，该第二频率单元用于第一设备和第三设备通信，第一频率单元与第二频域单元位于同一个工作频带。
该第一频率单元可以是载波，也可以是BWP。例如第一设备和第二设备基于Passive IoT技术进行通信时，第一频率单元可以是针对Passive IoT配置的载波(简称Passive IoT载波)；再例如，第一设备和第二设备基于WUR技术进行通信时，第一频率单元可以是针对WUR配置的载波(简称WUR载波)。上述Passive IoT载波和WUR载波可以是相同的载波或不同的载波。
该第一频率单元可以是用于上行传输的频率单元，如上行频率单元；或者第一频率单元可以是用于下行传输的频率单元，如下行频率单元；或者第一频率单元包括用于上行传输的频率单元和用于下行传输的频率单元，换言之，第一频率单元包括上行频率单元和下行频率单元。在一些实施例中，上行频率单元和下行频率单元可以是同一个频率单元，也即，第一频率单元为既用于上行传输的频率单元又用于下行传输的频率单元。
在第一频率单元为上行频率单元时，上述S420-2可以包括，第一设备在上行频率单元上接收来自于第二设备的上行信号，相应的，第二设备在上行频率单元上向第一设备发送上行信号；在第一频率单元为下行频率单元时，上述S420-1可以包括，第一 设备在下行频率单元上向第二设备发送下行信号，相应的，第二设备在下行频率单元上接收来自于第一设备的下行信号；在第一频率单元包括上行频率单元和下行频率单元时，第一设备在第一频率单元的下行频率单元上向第二设备发送下行信号，并在第一频率单元的上行频率单元上接收来自于第二设备的上行信号。
当第一频率单元是WUR载波时，下行信号例如可以是唤醒信号，第一设备可以在下行频率单元向第二设备发送该唤醒信号。
当第一频率单元是Passive IoT载波时，下行信号可以是载波信号，或下行信号可以是下行信令和/或数据，上行信号可以是基于载波信号的反射信号。例如，第一设备在下行频率单元向第二设备发送载波信号，并在上行频率单元接收第二设备基于该载波信号以反射通信的方式发送的反射信号，此种情况下，第一设备发送的载波信号和第二设备发送的反射信号在时域上存在重合。
上述载波信号和下行信令/数据的区别在于：载波信号用于为上行反射提供载波，或者可以为无源标签提供能量，载波信号对应的波形可以是给定频率下的正弦波或余弦波，或者，载波信号对应的波形没有经过幅度和/或相位调制，或者，载波信号对应的波形经过幅度和/或相位调制，但整体的幅度不足以被接收侧解释为传输数据。下行信令/数据对应的波形经过幅度和/或相位调制，整体的幅度足以被接收侧解释为传输数据。
可以理解的是，第二设备与第一设备进行通信之前，第二设备可以确定第一频率单元或者从接收第一设备发送的第一配置信息中获取第一频率单元。
第二频率单元同样也可以是载波，例如第二频率单元可以是NR系统中配置的NR载波。与第一频率单元类似的，第二频率单元可以是用于上行传输的频率单元，或者用于下行传输的频率单元，或者包括用于上行传输的频率单元和用于下行传输的频率单元。
在第一频率单元包括上行频率单元和下行频率单元的情况下，第一频率单元和第二频率单元位于同一工作频带可以是指：第一频率单元中的上行频率单元与第二频率单元位于同一工作频带；或者第一频率单元中的下行频率单元与第二频率单元位于同一工作频带；或者第一频率单元中的上行频率单元、下行频率单元，和第二频率单元均位于同一工作频带。
在第一频率单元包括上行频率单元和下行频率单元、第二频率单元包括用于上行传输的频率单元和用于下行传输的频率单元的情况下，第一频率单元和第二频率单元位于同一工作频带可以包括以下示例中的至少之一：
示例1、第一频率单元中的上行频率单元与第二频率单元中用于上行传输的频率单元位于同一工作频带；示例2、第一频率单元中的下行频率单元与第二频率单元中用于下行传输的频率单元位于同一工作频带；示例3、第一频率单元中的上行频率单元与第二频率单元中用于下行传输的频率单元位于同一工作频带；示例4、第一频率单元中的下行频率单元与第二频率单元中用于上行传输的频率单元位于同一工作频带。
当第一频率单元和第二频率单元位于同一工作频带包含以上示例1至4中的至少3种时，表示第一频率单元的上行频率单元、下行频率单元，和，第二频率单元中用于上行传输的频率单元和用于下行传输的频率单元，均位于同一工作频带。
假设通信方法400应用于NR通信系统，第一频率单元和第二频率单元所在的工作频带例如可以是前述表1中的NR工作频带。例如，第一频率单元和第二频率单元均可以部署于n1对应的工作频带。
可选的，第一频率单元可以有不同的部署模式。参见图9a至图9c所示，第二频率单元(例如NR载波)包括传输带宽(例如NR传输带宽)和保护带(例如NR保护带)，第二频率单元的传输带宽内包括NRB个RB，例如RB#0至RB#NRB-1。第一频率单元例如可以部署于第二频率单元的传输带宽内，第一频率单元在第二频率单元中可以占用一个或多个RB，如图9a中第一频率单元在第二频率单元中占用RB#1；或者第一频率单元可以部署于第二频率单元的保护带内，参见图9b；或者第一频率单元和第二频率单元之间的频域间隔小于阈值，参见图9c。结合图9a至图9c可知，第一频率单元的第一信道栅格在第一频率单元中对应的资源元素可以是第一频率单元中间的资源元素，且该资源元素所在的RB的索引可以满足表5中的公式其中N′RB为第一频率单元的传输带宽包括的RB数；第二频率单元的第二信道栅格在第二频率单元中对应的资源元素可以是第二频率单元中间的资源元素，且该资源元素所在的RB的索引可以满足表5中的公式
针对上述第一频率单元和第二频率单元在频域上部署的相对位置关系，第一频率单元与第二频率单元之间的频域资源关系还包括以下三种可能的示例。
第一种示例，在第一频率单元部署于第二频率单元的传输带宽内的情况下，为了避免造成资源碎片，降低频谱使用效率，第一频率单元的RB应与第二频率单元的RB边界对齐。
第二种示例，在第一频率单元部署于第二频率单元的保护带内的情况下，第一频率单元的子载波可以和第二频率单元的子载波边界对齐，避免因子载波不正交导致对第二频率单元的传输带宽内的数据传输造成干扰。此种情况下，第一频率单元占用的频域资源与第二频率单元的传输带宽不重合，第一频率单元的RB和第二频率单元的RB边界不对齐不会对第二频率单元的频谱使用效率造成影响，因此可以不限定第一频率单元的RB和第二频率单元的RB是否边界对齐。
第三种示例，在第一频率单元与第二频率单元之间的频域间隔小于阈值的情况下，与上述第二种示例类似，第一频率单元的子载波可以和第二频率单元的子载波边界对齐，并且不限定第一频率单元的RB和第二频率单元的RB是否边界对齐。
上述第二种示例和第三种示例中第一频率单元的部署模式在下文中可以称作传输带宽外部署。
第一频率单元内的第一信道栅格所在的频率位置对应该第一频率单元内一个资源元素的频率位置。确定该一个资源元素的位置在频域上的索引，可以通过如下两种示 例。
示例一，该一个资源元素的位置在频域上的索引可以根据第一频率单元的传输带宽确定。如表5所示，假设第一频率单元的传输带宽包括N'RB个RB，在N'RB为奇数(即N'RB mod2＝1)时，资源元素的索引为6，物理资源块索引为在N'RB为偶数(即N'RB mod2＝0)时，资源元素的索引为0，物理资源块索引为例如，图9a中，第一信道栅格对应的频率位置为物理资源块索引为资源元素的索引为6。
示例二，该一个资源元素的位置在频域上的索引可以根据第二频率单元的传输带宽NRB确定。如表5所示，第一频率单元的传输带宽包括NRB个RB，在NRB为奇数(即NRB mod2＝1)时，资源元素的索引为6，物理资源块索引为在N'RB为偶数(即NRB mod2＝0)时，资源元素的索引为0，物理资源块索引为
可以理解的是，上述示例一适用于上述第一种示例、第二种示例或第三种示例中的场景，即第一频率单元部署于第二频率单元的传输带宽内、第二频率单元的保护带内或第一频率单元与第二频率单元之间的频域间隔小于阈值时，第一设备均可以基于第一频率单元的传输带宽确定第一信道栅格在对应的资源元素的位置，也即确定第一频率单元；上述示例二一般适用于上述第一种示例中的场景，即第一频率单元部署于第二频率单元的传输带内时，第一设备可以考虑基于第二频率单元的传输带宽确定第一信道栅格对应的资源元素的位置，也即确定第一频率单元。下文中将针对上述第一种示例、第二种示例和第三种示例中的场景，上述示例一、示例二的第一频率单元的确定方式，以及信道栅格的粒度，进行进一步地说明，以实现在保证频谱使用效率和避免子载波不正交的前提下，使第一频率单元的部署更加灵活。
本申请实施例中，第一频率单元对应的第一信道栅格的粒度和第二频率单元对应的信道栅格的粒度可以相同也可以不同，本申请实施例中第一信道栅格的粒度小于或等于第二信道栅格的粒度，避免由于第一信道栅格的粒度过大，而导致降低第一频率单元部署的灵活性。
接续上述第一种示例，结合图10，基于第一信道栅格的粒度和第二信道栅格的粒度相同的情况，对第一频率单元部署的灵活性进行说明。
如图10所示，第二频率单元(例如NR载波)占用的RB数NRB可以为奇数，或者说NRB mod 2＝1，例如，(a)中第二频率单元的传输带宽包括的RB数NRB＝2N+1；或者 第二频率单元占用的RB数NRB可以为偶数，或者说NRB mod 2＝0，例如，(b)中第二频率单元的传输带宽包括的RB数NRB＝2N。其中，箭头位置为第二频率单元的频率位置，也即第二信道栅格所在的频率位置所对应的第二频率单元内一个资源元素的频率位置。例如，第二频率单元的传输带宽包括的RB数NRB＝2N+1时，第二信道栅格所在的频率位置对应RB#N中RE#6；再例如，第二频率单元的传输带宽包括的RB数NRB＝2N时，第二信道栅格所在的频率位置对应RB#N中RE#0。
如图10所示，第一频率单元占用的RB数N'RB也可以为奇数，或者说N′RB mod 2＝1，例如(c)中第一频率单元的传输带宽包括的RB数N'RB＝2M+1；或者第一频率单元占用的RB数N'RB为偶数，或者说N′RB mod 2＝0，例如d中第一频率单元的传输带宽包括的RB数N'RB＝2M。其中，箭头位置为第一频率单元的频率位置，也即第一信道栅格所在的频率位置所对应的第一频率单元内一个资源元素的频率位置。例如，第一频率单元的传输带宽包括的RB数N'RB＝2M+1时，第一信道栅格所在的频率位置对应RB#M中RE#6；再例如，第一频率单元的传输带宽包括的RB数NRB＝2M时，第一信道栅格所在的频率位置对应RB#M中RE#0。
上述M和N均为正整数。一般来说，M小于或等于N。
图10中的(a)、(b)、(c)、(d)所示，可以得到关于第一频率单元和第二频率单元各自占用的RB数奇偶性的四种场景。例如，NRB和N'RB奇偶性一致：如第二频率单元参见(a)、第一频率单元参见图(c)，或第二频率单元参见(b)、第一频率单元参见(d)；或者NRB和N'RB奇偶性不一致：如第二频率单元参见(a)、第一频率单元参见图(d)，或第二频率单元参见(b)、第一频率单元参见(c)。
基于上述四种场景，以子载波间隔为15kHz、第一信道栅格和第二信道栅格均为100kHz、RB的带宽为180kHz为例，在保证第一频率单元的RB和第二频率单元的RB边界对齐的情况下，第一信道栅格对应的频率的可能值fp如下表6所示。其中，k、n、m均为整数，k*100为第二信道栅格对应的频率，m*180表示整数倍个RB的带宽。
表6
如表6所示，假设第二频率单元的传输带宽内，中间的资源块(RB)的索引为0，频率高于该RB的RB的索引为正值，频率低于该RB的RB的索引为负值，当第二频率单元的传输带宽和第一频率单元的传输带宽的奇偶性一致时，第二频率单元中只有一些有限的RB位置可用于部署第一频率单元。其中，m表示RB的索引。当NRB和N'RB奇偶性一致时，m＝0,±5,±10,±15,…表示第二频率单元的传输带宽内的中间的RB可 用于部署第一频率单元，以及，每间隔5个RB的位置可用于部署第一频率单元。当NRB和N'RB奇偶性不一致时，在NR载波内无法找到可用于部署第一频率单元的频率位置。
在一些实施例中，可以根据前述示例二提供的方法，即根据第二频率单元的传输带宽确定该一个资源元素的位置在频域上的索引，以避免在第一频率单元的传输带宽所包括的RB数和第二频率单元的传输带宽所包括的RB数奇偶不一致的情况下，无法配置第一频率单元的情况，或者说，避免在第一频率单元的传输带宽所包括的RB数和第二频率单元的传输带宽所包括的RB数奇偶不一致的情况下，配置第一频率单元导致第一频率单元的RB边界和第二频率单元的RB边界不对齐。
然而，结合如上表6所示，即使第一频率单元的传输带宽所包括的RB数和第二频率单元的传输带宽所包括的RB数奇偶不一致，第二频率单元中可用于配置第一频率单元的频率位置也十分有限。为了进一步提高第一频率单元的部署灵活性，本实施例考虑进一步减小第一信道栅格的粒度。
例如，结合上述表6所示，将fp公式中的m取值0、1、2、3……，并尝试n的取值，计算k*100±m*180，或k*100±(m*180+90)，与n*100之间的偏差，得到偏差为0,±10,±20,±30,±40,±50(kHz)，那么为了使第一频率单元可以部署于第二频率单元内的任意RB位置，可以将第一信道栅格设置为10kHz。
应理解，上述第一信道栅格为10kHz仅为一种示例，并不对本申请构成任何限定。第一信道栅格的粒度小于第二信道栅格的粒度的情况下，第一信道栅格的粒度的多种取值均可以提高第一频率单元部署的灵活性，例如第一信道栅格的粒度还可以是5kHz、20kHz等等。
例如，在图10中(a)(b)(c)(d)分别结合形成的四种场景中，以子载波间隔为30kHz、第一信道栅格和第二信道栅格均为100kHz、RB的带宽为180kHz为例，在保证第一频率单元的RB和第二频率单元的RB边界对齐的情况下，第一信道栅格对应的频率的可能值如下表7所示。
表7
结合表7所示，进一步分析可知，第一信道栅格对应的频率fp的各可能值距离100kHz的整数倍的偏差为0,±20,±40(kHz)，为了使第一频率单元可以部署于第二频率单元内的任意RB位置，可以将第一信道栅格的粒度设置为20kHz，当然第一信道 栅格也可以设置为10kHz或5kHz。
子载波间隔为60kHz时，第一信道栅格对应的频率fp的各可能值距离100kHz的整数倍的偏差，与子载波间隔为30kHz时的相同，也即子载波间隔为60kHz时，第一信道栅格的粒度也可以是5kHz、10kHz或20kHz。
在一些实施例中，第一频率单元的传输带宽包括的RB数和第二频率单元的传输带宽包括的RB数的奇偶性一致，例如第一设备可以根据第二频率单元的传输带宽包括的RB数的奇偶性，确定第一频率单元的传输带宽包括的RB数，使第一频率单元的传输带宽包括的RB数的奇偶性与第二频率单元的传输带宽包括的RB数的奇偶性一致。进而提高第一频率单元部署的灵活性。
上述图10以及表6相关的示例中，主要以上述第一种示例的场景，即第一频率单元部署于第二频率单元的传输带宽内为例进行说明。下面将以上述第二种示例或第三种示例的场景，即第一频率单元部署于第二频率单元的保护带内，或者第一频率单元与第二频率单元之间的频域间隔小于阈值为例进行说明。
前已述及，在第一频率单元部署于第二频率单元的保护带内，或者第一频率单元与第二频率单元之间的频域间隔小于阈值的情况下，第一频率单元的子载波和第二频率单元的子载波边界对齐，可以避免由于第一频率单元和第二频率单元不正交，对第二频率单元的传输带宽内的数据传输造成干扰。
假设第一信道栅格的粒度和第二信道栅格的粒度均为100kHz，子载波间隔为15kHz，下面结合，结合如下表8所示，对满足信道栅格为100kHz的整数倍的可用频率位置进行分析。
表8
参见表8，仅以NR载波的传输带宽为5MHz和10MHz为例展示分析结果。假设第二频率单元的传输带宽内，中间RB位置处RB对应的频率为0Hz，频率高于该RB 的RB的频率为正值，频率低于该RB的RB的频率为付值，从上表8可以看出满足100kHz整数倍的fp非常有限，例如仅在第二频率单元的传输带宽为5MHz、第一频域单元的传输带宽包括的RB数为偶数的情况下，fp＝±4800(kHz)处，可以部署第一频率单元。第二频率单元的传输带宽为其它数值时，可以采用类似的方法计算出fp的各可能位置。限于篇幅，这里不再一一列举。采样相似的方式，得出的结论是第二频率单元的传输带宽为其它数值时，满足fp为100kHz整数倍的频率位置同样非常有限，也即可以部署第一频率单元的位置非常有限。
进一步分析，上述表8示出的，以及表8中未示出的但基于类似方式计算得到的第一信道栅格对应的频率fp的各可能值，第一信道栅格对应的频率fp距离100kHz整数倍的偏差为0,±5,±10,±15,±20,±25,±30,±35,±40,±45,±50(kHz)。为了使得第一频率单元能部署于第二频率单元的保护带内的任意位置，第一信道栅格的粒度可以为5kHz。表9以第二频率单元为NR载波作为一种可能的示例，由于篇幅受限，该表格中只列举了工作频带n1、n2、n3和n5。应理解，对于其它第二信道栅格(如NR信道栅格)的粒度为100kHz的工作频带，第一信道栅格的粒度为5kHz也适用。
表9
基于与上述类似的原因，子载波为30kHz时，第一信道栅格对应的频率fp距离100kHz整数倍的偏差为0,±10,±20,±30,±40,±50(kHz)，此种情况下，第一信道栅格的粒度可以为10kHz，当然也可以为5kHz。对于子载波间隔60kHz，第一信道栅格对应的频率fp距离100kHz整数倍的偏差为0,±20,±40(kHz)，此种情况 下，第一信道栅格的粒度可以为20kHz，当然也可以为5kHz或10kHz。
基于上述表6至表9以及各相关示例，第一信道栅格的粒度与第一频率单元的部署模式，和，第一频率单元的子载波间隔中的至少之一相关。基于此，第一设备可以根据第一频率单元的部署模式，和，第一频率单元的子载波间隔中的至少之一确定第一信道栅格的粒度。
需要说明的是，第一频率单元的子载波间隔可以是第一频率单元约定的子载波间隔，或者第一频率单元内配置的子载波间隔。
例如，第一频率单元的信道栅格与第一频率单元的子载波间隔之间的对应关系可以包括：
1)子载波间隔15kHz，信道栅格为5kHz；
2)子载波间隔30kHz，信道栅格为10kHz；
3)子载波间隔60kHz，信道栅格为20kHz。
又例如，第一频率单元的信道栅格与第一频率单元的子载波间隔、第一频率单元的部署模式之间的对应关系可以包括：
1)子载波间隔15kHz，传输带宽内部署，信道栅格为10kHz；
2)子载波间隔15kHz，传输带宽外部署，信道栅格为5kHz；
3)子载波间隔30kHz，传输带宽内部署，信道栅格为20kHz；
4)子载波间隔30kHz，传输带宽外部署，信道栅格为10kHz；
5)子载波间隔60kHz，传输带宽内部署，信道栅格为20kHz；
6)子载波间隔60kHz，传输带宽外部署，信道栅格为20kHz；
上述对应关系可以是预定义的或者预配置的，第一设备可以根据上述对应关系确定第一信道栅格的粒度；或者，第一信道栅格的粒度可以为预定义的值，例如5kHz、10kHz或20kHz的整数倍。
在一些实施例中，第一频率单元对应的射频参考频率FREF满足：FREF＝FREF-Offs+ΔFGlobal(NREF–NREF-Offs)+offset；其中，FREF-Offs为射频参考频率偏移值，ΔFGlobal为全局信道栅格的粒度，NREF为NR-ARFCN，NREF-Offs为NR-ARFCN偏移值，offset为频率偏移量。
其中，FREF-Offs和NREF-Offs的取值可以参见下表10：
表10
示例性的，offset的取值为{-50，-45，-40，-35，-30，-25，-20，-15，-10，-5，0,5,10,15,20,25,30,35,40,45,50}kHz中的一项。
示例性的，对于第一设备而言，第一频率单元可以是第一设备确定的，或者第一频率单元是第一设备从第四设备接收的第二配置信息获取的；对于第二设备而言，第一频率单元可以是第二设备确定的，或者第一频率单元可以是第二设备从第一设备发 送的第一配置信息获取的。可选的，第四设备可以是网络设备，例如基站、宏基站等。
因此，本申请实施例在第一设备与不同设备进行通信时，确定第一设备与第二设备进行通信的第一频率单元，该第一频率单元与用于第一设备和第三设备进行通信的第二频率单元位于同一工作频带，且第一频率单元对应的第一信道栅格的粒度小于或等于第二信道栅格的粒度。一方面，本申请实施例为频率单元的确定提供了一种解决方案，使第一设备和第二设备可以通过第一频率单元实现通信；另一方面，在确定频率单元时，考虑信道栅格的粒度，比如将第一频率单元对应的第一信道栅格的粒度设置的更小，从而提高第一频率单元部署的灵活性。
在一些通信系统(例如LTE系统)中，为减少网络设备侧或终端设备侧本振泄露带来直流(direct current，DC)子载波性能恶化的问题，下行频率单元内预留一个DC子载波不发送信息，上行载波整体偏移半个子载波(如7.5kHz)。在另一些通信系统(例如NR系统)中，通过网络设备或终端设备对本振泄露带来DC子载波性能恶化的问题进行处理，而下行载波中没有预留DC子载波，上行载波没有整体偏移半个子载波。当上述两种通信系统(如LTE系统和NR系统)共享频谱资源时，两种通信系统的下行频率单元均没有偏移，因此子载波边界是对齐的；然而两种通信系统中的一个上行频率单元偏移了半个子载波，另一个上行频率单元没有偏移，导致两种通信系统由于子载波边界没有对齐(即子载波不正交)，进而在数据传输时造成各通信系统之间相互干扰。
下面对在上述共享频谱中如何确定第一频率单元进行示例性的说明。
图11为本申请实施例提供的一种通信方法500的交互流程图。如图11所示，该通信方法500还包括以下部分或者全部步骤：
S510，第一设备根据下行频率单元所在的频带类型、第二设备的第一能力、第二设备的类型、下行频率单元承载的信号所在的时域资源类型、上行频率单元承载的信号所在的时域资源类型中的至少一项，确定上行偏移量和/或下行偏移量；
S520-1，第一设备根据上行频率位置和上行偏移量，确定上行频率单元；
S520-2，第二设备根据上行频率位置和上行偏移量，确定上行频率单元；
S530-1，第一设备根据下行频率位置和下行偏移量，确定下行频率单元；
S530-2，第二设备根据下行频率位置和下行偏移量，确定下行频率单元；
S540-1，第一设备在下行频率单元向第二设备发送下行信号；相应的，第二设备在下行频率单元接收来自第一设备的下行信号；
S540-2，第二设备在上行频率单元向第一设备发送上行信号；相应的，第一设备在上行频率单元接收来自第二设备的上行信号。
本实施例对上述S520-1、S520-2、S530-1和S530-2的执行顺序不作限定。
上述S540-1和S540-2可以择一执行，或者依次执行，例如第二设备接收第一设备发送的下行信号后，向第一设备发送上行信号。
如前所述，第一频率单元可以包括用于传输上行信号的上行频率单元，和/或，用于传输下行信号的下行频率单元。那么，上述图8所示实施例中S410-1第一设备确定第一频率单元可以包括：S520-1，第一设备根据上行频率位置和上行偏移量，确定该上行频率单元，和/或，S530-1，第一设备根据下行频率位置和下行偏移量，确定该下 行频率单元。
其中，上行频率位置可以是协议约定的，或者第一设备中预定义的，或者第四设备对第一设备预配置的，本申请对此不作限定。下行频率位置与此类似，不再赘述。在Passive IoT中，上行频率位置和下行频率位置往往存在频域间隔，该频域间隔同样可以是协议约定的，或者第一设备中预定义的，或者第四设备对第一设备预配置的。
基于此，本申请实施例中第一设备可以先基于上述S510确定上行偏移量和/或下行偏移量，以便于第一设备基于上行偏移量/下行偏移量确定第一频率单元，避免共享频谱中各通信系统之间的子载波边界不对齐，对数据传输造成干扰。
下行频率单元所在的频带类型例如可以包括：FDD模式下的上行传输频带、FDD模式下的下行传输频带、SDL传输频带、SUL传输频带、TDD传输频带等。在下文中，将FDD模式下的上行传输频带和SUL传输频带统称为上行传输频带，将FDD模式下的下行传输频带和SDL传输频带统称为下行传输频带。
上述第一能力为第二设备是否支持将上行信号移频至下行频率单元所在的下行传输频带之外的上行传输频带。
示例性的，在Passive IoT场景下，第二设备可以是标签。第二设备的类型可以包括有源标签和无源标签。在一些示例中，第二设备的类型可以反映出上述第一能力，例如第二设备的类型是无源标签时，第二设备不具备将上行信号移频至下行频率单元所在的下行传输频带之外的上行传输频带的能力。
上述时域资源类型例如可以包括TDD模式下的上行时域资源(例如上行时隙)、下行时域资源(例如下行时隙)。
下面通过几个示例对上述S510进行说明：
一、第一设备基于下行频率单元所在的频带类型、第二设备的第一能力(或第二设备的类型)中至少之一，确定上行偏移量和/或下行偏移量：
一种示例是，下行频率单元位于下行传输频带，且第二设备支持将上行信号移频至该下行传输频带之外的上行传输频带，上行偏移量为第一数值或第二数值；或者，下行频率单元位于下行传输频带，且第二设备不支持将该上行信号移频至该下行传输频带之外的上行传输频带，该上行偏移量为该第一数值。
需要说明的是，第二设备是否支持将上信号频移至下行传输频带之外的上行传输频带，可以是第二设备的第一能力指示的，或者可以是第二设备的类型决定的。
如前所述，下行传输频带可以是FDD模式下的下行传输频带或SDL传输频带，上传传输频带可以是FDD模式下的上行传输频带和SUL传输频带。
应理解，当下行传输频带是FDD模式下的下行传输频带、上传传输频带是FDD模式下的上行传输频带时，下行传输频带和上行传输频带位于同一工作频带，例如表1所示的，上行传输频带为NR工作频带n1中的上行工作频带、下行传输频带为NR工作频带n1中的下行工作频带。其中，NR工作频带n1仅为示例，其可以替换为表1中任一FDD模式对应的工作频带，例如n2、n3……。
当然，下行传输频带和上行传输频带可以不是成对的传输频带，或者说，上行传输频带和下行传输频带可以位于不同工作频带，或者说，上行传输频带和下行传输频带的频带号(如n1、n2、n3……)不同。例如，下行传输频带是FDD模式下的下行 传输频带，上传传输频带是SUL传输频带，又例如，下行传输频带是NR工作频带n1中的的下行工作频带，上行传输频带时NR工作频带n2中的上行工作频带。
进一步地，上述上行传输频带例如可以是与LTE共享的一段频谱，那么在上行传输频带用于LTE上行通信时，为了保证上行频率单元与LTE的频率单元的子载波边界对齐，将上行偏移量设置为第二数值，第二数值例如可以是7.5kHz；在上述上行传输频带不用于LTE上行通信的情况下，上行偏移量为第一数值，第一数值例如可以是0。
举例而言，假设第二频率单元包括传输NR上行信号的NR上行载波和/或传输NR下行信号的NR下行载波、第一频率单元包括传输Passive IoT上行信号的Passive IoT上行载波和/或传输Passive IoT下行信号Passive IoT下行载波，第一频率单元位于NR与LTE的共享频谱中。结合图12a至图12b对上述一种示例进行说明。
参见图12a，Passive IoT下行载波位于下行传输频带，且第二设备支持将Passive IoT上行信号移频至Passive IoT下行载波所在的下行传输频带对应的上行传输频带。此种情况下，Passive IoT上行载波与LTE上行载波均位于该上行传输频带，则Passive IoT上行载波的上行偏移量为7.5kHz；当然，若确定该上行传输频带不用于LTE的上行通信，则上行偏移量可以为0。可选的，NR上行载波与Passive IoT上行载波类似，NR上行载波的上行偏移量与Passive IoT上行载波的上行偏移量相同。
参见图12b，Passive IoT下行载波位于下行传输频带，且第二设备不支持将Passive IoT上行信号移频至Passive IoT下行载波所在的下行传输频带之外的上行传输频带。此种情况下，Passive IoT上行载波仍位于下行传输频带，且该下行传输频带不用于LTE的上行通信，则Passive IoT上行载波的上行偏移量为0。
在上述一种示例中，下行频率单元位于下行传输频带，且下行传输频带不用于LTE的上行通信，因此下行偏移量可以为0。
另一种示例是，下行频率单元位于上行传输频带，下行偏移量和上行偏移量均为第一数值或第二数值。
进一步地，上述上行传输频带例如可以是与LTE共享的一段频谱，那么在上行传输频带用于LTE上行通信时，为了保证下行频率单元和上行频率单元，与LTE的频率单元的子载波边界对齐，将下行偏移量和上行偏移量均设置为第二数值，第二数值例如可以是7.5kHz；在上述上行传输频带不用于LTE上行通信的情况下，将下行偏移量和上行偏移量均设置为第一数值，第一数值例如可以是0。
举例而言，仍假设第二频率单元包括传输NR上行信号的NR上行载波和/或传输NR下行信号的NR下行载波、第一频率单元包括传输Passive IoT上行信号的Passive IoT上行载波和/或传输Passive IoT下行信号Passive IoT下行载波，第一频率单元位于NR与LTE的共享频谱中。结合图12c对上述一种示例进行说明。
参见图12c，Passive IoT上行载波位于下行传输频带，此种情况下，Passive IoT下行载波和Passive IoT上行载波，与LTE上行载波均位于该上行传输频带，则Passive IoT下行载波的下行偏移量和Passive IoT上行载波的上行偏移量均为7.5kHz；当然，若确定该上行传输频带不用于LTE的上行通信，则下行偏移量和上行偏移量均可以为0。可选的，NR下行载波位于下行传输频带，因此NR下行载波的下行偏移量可以是0；NR上行载波与Passive IoT上行载波类似，NR上行载波的上行偏移量与Passive IoT 上行载波的上行偏移量相同。
二、第一频率单元位于TDD工作频带时，第一设备基于下行频率单元承载的信号所在的时域资源类型、上行频率单元承载的信号所在的时域资源类型，确定上行偏移量和下行偏移量：
示例1、下行频率单元承载的下行信号占用下行时域资源，且上行频率单元承载的上行信号占用上行时域资源，上述下行偏移量和上行偏移量均为第一数值或第二数值。举例而言，假设第二频率单元包括传输NR上行信号的NR上行载波和/或传输NR下行信号的NR下行载波、第一频率单元包括传输Passive IoT上行信号的Passive IoT上行载波和/或传输Passive IoT下行信号Passive IoT下行载波，第一频率单元位于NR与LTE的共享频谱中。结合图13a所示，Passive IoT下行信号在下行时隙中传输，Passive IoT上行信号在上行时隙中传输，此种情况下，Passive IoT上行信号与LTE上行信号均在上行时隙中传输，则Passive IoT上行载波的上行偏移量和Passive IoT下行载波的下行偏移量均为7.5kHz；当然，若确定该上行时隙不用于LTE的上行通信，则上行偏移量和下行偏移量可以均为0。可选的，NR上行载波与Passive IoT上行载波类似，NR上行载波的上行偏移量与Passive IoT上行载波的上行偏移量相同。
示例2、下行频率单元承载的下行信号和下行频率单元承载的上行信号均占用下行时域资源的情况下，上述下行偏移量和上行偏移量均为第一数值。仍假设第二频率单元包括传输NR上行信号的NR上行载波和/或传输NR下行信号的NR下行载波、第一频率单元包括传输Passive IoT上行信号的Passive IoT上行载波和/或传输Passive IoT下行信号Passive IoT下行载波，第一频率单元位于NR与LTE的共享频谱中。结合图13b所示，Passive IoT下行信号和Passive IoT上行信号均在下行时隙中传输，下行时隙不用于LTE上行通信，则Passive IoT上行载波的上行偏移量和Passive IoT下行载波的下行偏移量均为0。
示例3、下行频率单元承载的下行信号和上行频率单元承载的上行信号均占用上行时域资源的情况下，上述下行偏移量和上行偏移量均为第一数值或第二数值。仍假设第二频率单元包括传输NR上行信号的NR上行载波和/或传输NR下行信号的NR下行载波、第一频率单元包括传输Passive IoT上行信号的Passive IoT上行载波和/或传输Passive IoT下行信号Passive IoT下行载波，第一频率单元位于NR与LTE的共享频谱中。结合图13c所示，Passive IoT下行信号和Passive IoT上行信号均在上行时隙中传输。此种情况下，Passive IoT上行信号与LTE上行信号均在上行时隙中传输，则Passive IoT上行载波的上行偏移量和Passive IoT下行载波的下行偏移量均为7.5kHz；若确定该上行时隙不用于LTE的上行通信，则上行偏移量和下行偏移量可以均为0。可选的，NR上行载波与Passive IoT上行载波类似，NR上行载波的上行偏移量与Passive IoT上行载波的上行偏移量相同。
可选的，上述任一示例中，在Passive IoT场景中，下行频率单元承载的下行信号可以是载波信号或下行信令/数据。
可以理解的，上述上行频率单元的上行偏移量可以是上行频率单元对应的RF参考频率(FRER)的偏移量，类似的，下行频率单元的下行偏移量可以是下行频率单元对应的RF参考频率的偏移量。
示例性的，第一设备可以基于下行频率位置和下行偏移量，确定上述下行频率单元，例如第一设备根据下行频率位置与下行偏移量之和，确定下行频率单元，上行偏移量可以是正值或者负值。
示例性的，第一设备可以基于上行频率位置和上行偏移量，确定上述上行频率单元，例如第一设备根据上行频率位置与上行偏移量之和，确定上行频率单元。或者第一设备可以基于下行频率位置、上行偏移量、上行频率位置与下行频率位置之间的频域间隔，确定上述上行频率单元，例如第一设备根据下行频域位置、上行偏移量、上行频率位置与下行频率位置之间的频域间隔之和，确定上行频率单元。其中，上行偏移量可以为正值或负值，上行频率位置与下行频率位置之间的频域间隔可以为正值或负值。
上述下行频率位置、下行偏移量、上行频率位置、上行偏移量上行频率位置与下行频率位置之间的频域间隔，其中各频率信息可以由第一设备确定，或者可以由第四设备向第一设备进行配置，或者可以由协议定义，以使第一设备能够根据部分或者全部频率信息确定第一频率单元。
可选的，第四设备可以向第一设备发送第二配置信息，该第二配置信息用于指示以下至少之一：下行频率位置、下行偏移量、上行频率位置、上行偏移量上行频率位置与下行频率位置之间的频域间隔。
例如第一设备可以实现为基站、第四设备可以实现为宏基站，或者第一设备可以实现为终端设备、第四设备可以实现为基站。
第二设备可以接收第一设备发送的第一配置信息，第二设备可以根据该第一配置信息确定第一频率单元。
在一些实施例中，该第一配置信息可以指示下行频率单元，第二设备可以在该下行频率单元上接收来自第一设备的下行信号。
在另一些实施例中，该第一配置信息可以指示下行频率位置与上行频率位置之间的频域间隔、下行频率单元和上行偏移量。第二设备可以根据下行频率位置与上行频率位置之间的频域间隔、下行频率单元和上行偏移量，确定上行频率单元，例如第二设备可以根据下行频率位置与上行频率位置之间的频域间隔、下行频率单元和上行偏移量之和，确定上行频率单元。
在又一些实施例中，该第一配置信息可以指示上行频率单元，第二设备可以在该上行频率单元上向第一设备发送上行信号。
需要说明的是，上述下行频率单元、上行频率单元、下行频率位置与上行频率位置之间的频域间隔、下行频率单元和上行偏移量中的部分或者全部频率信息也可以由协议定义，或者可以是第二设备中预定义的，此种情况下，第一配置信息可以不包括协议定义的以及第二设备中预定义的部分或者全部频率信息。
在上述图11所示的实施例中，第一设备根据上行偏移量和/或下行偏移量，确定第一频率单元，避免第一频率单元的子载波与其他通信系统(例如LTE系统)的子载波边界不对齐(也即子载波不正交)，而导致各通信系统之间传输数据相互干扰的情况。
前已述及，在Passive IoT的通信场景中，一方面，由于Passive IoT的上行传输采用反射通信，也即第二设备在发送上行的反射信号期间，同时接收下行的载波信号， 那么，上行的发送信号和下行的载波信号在时域上存在重叠，使得上行的发送信号和下行的载波信号可能均位于TDD传输频带的上行时域资源内或均位于TDD传输频点的下行时域资源内；第二方面，第二设备将上行的反射信号相对于下行的载波信号进行频率搬移的能力是有限的，换言之，当第二设备的频率搬移能力较低时，承载上行信号的上行频率单元和承载下行信号的下行频率单元可能均位于上行传输频带内，或者均位于下行传输频带内。上述两个方面，均可能由于Passive IoT和NR之间收发不同向而导致的信号干扰的问题。
针对上述问题，本实施例中，考虑将与第二频率单元传输不同向的频率单元部署于保护带内，避免第一频率单元与第二频率单元收发不同向的问题。参见图14a至图14d。
参见图14a，第二频率单元为用于上行传输的频率单元，换言之，第二频率单元位于上行传输频带，此种情况下，第一频率单元中的上行频率单元与第二频率单元同向，该上行频率单元可以位于第二频率单元的传输带宽内，第一频率单元中的下行频率单元由于和第二频率单元不同向而位于第二频率单元的保护带内。
参见图14b，第二频率单元为用于下行传输的频率单元，换言之，第二频率单元位于下行传输频带。第一频率单元中的上行频率单元由于和第二频率单元不同向，可以位于第二频率单元的保护带内，而第一频率单元中的下行频率单元由于和第二频率单元同向，可以位于第二频率单元的传输带宽内。
参见图14c，第一频率单元位于TDD工作频带，下行频率单元传输的下行信号和上行频率单元传输的、与下行信号对应的上行信号均占用下行时域资源，下行频率单元位于第二频率单元的传输带宽内，上行频率单元位于第二频率单元的保护带内。
参见图14d，第一频率单元位于TDD工作频带，下行频率单元传输的下行信号和上行频率单元传输的、与下行信号对应的上行信号均占用上行时域资源，下行频率单元位于第二频率单元的保护带内，上行频率单元位于第二频率单元的保护带内。
本实施例中，针对可能存在收发不同向问题的各种场景，将第一频率单元中的下行频率单元和上行频率单元分别部署于第二频率单元的传输带宽内或者保护带内，避免第一频率单元与第二频率单元由于收发不同向而导致信号干扰的问题。
以上，结合图8至图14d详细说明了本申请实施例提供的方法。以下，结合图15至图16详细说明本申请实施例提供的装置。
图15是本申请实施例提供的通信装置的示意性框图。如图15所示，该装置600可以包括：收发单元610和处理单元620。
可选地，该通信装置600可对应于上文方法实施例中的第一设备，例如，可以为第一设备，或者配置于第一设备中的部件(如，芯片或芯片系统等)。
应理解，该通信装置600可对应于根据本申请实施例的图8和图11所示的方法中的第一设备，通信装置600可以包括用于执行图8和图11中的方法中第一设备执行的方法的单元。并且，该通信装置600中的各单元和上述其他操作和/或功能分别为了实现图8和图11中的方法的相应流程。
该通信装置600可以包括收发单元610和处理单元620，收发单元610执行信息收发相关的处理，处理单元620则执行除了信息收发之外的其他处理。
比如，当通信装置600用于执行图8和图11中的方法时，处理单元620可用于确定第一频率单元；收发单元610可用于在该第一频率单元上和第二设备进行通信；其中，该第一频率单元对应的第一信道栅格的粒度小于或等于第二频率单元对应的第二信道栅格的粒度，该第二频率单元用于该通信装置和第三设备通信，该第一频率单元与该第二频域单元位于同一个工作频带。
该通信装置600也可以对应于上文方法实施例中的第二设备，例如，可以为第二设备，或者配置于第二设备中的部件(如，芯片或芯片系统等)。
该通信装置600中的收发单元610可以通过收发器实现，例如可对应于图16中所示的通信装置700中的收发器710，该通信装置600中的处理单元620可通过至少一个处理器实现，例如可对应于图16中示出的通信装置700中的处理器720。
当该通信装置600为配置于通信设备(如第一设备或第二设备)中的芯片或芯片系统时，该通信装置600中的收发单元610可以通过输入/输出接口、电路等实现，该通信装置600中的处理单元620可以通过该芯片或芯片系统上集成的处理器、微处理器或集成电路等实现。
图16是本申请实施例提供的通信装置的另一示意性框图。如图16所示，该通信装置700可以包括：收发器710、处理器720和存储器730。其中，收发器710、处理器720和存储器730通过内部连接通路互相通信，该存储器730用于存储指令，该处理器720用于执行该存储器730存储的指令，以控制该收发器710发送信号和/或接收信号。
应理解，该通信装置700可以对应于上述方法实施例中的第一设备或第二设备，并且可以用于执行上述方法实施例中第一设备或第二设备执行的各个步骤和/或流程。可选地，该存储器730可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。存储器730可以是一个单独的器件，也可以集成在处理器720中。该处理器720可以用于执行存储器730中存储的指令，并且当该处理器720执行存储器中存储的指令时，该处理器720用于执行上述与第一设备或第二设备对应的方法实施例的各个步骤和/或流程。
可选地，该通信装置700是前文实施例中的第一设备。
可选地，该通信装置700是前文实施例中的第二设备。
其中，收发器710可以包括发射机和接收机。收发器710还可以进一步包括天线，天线的数量可以为一个或多个。该处理器720和存储器730与收发器710可以是集成在不同芯片上的器件。如，处理器720和存储器730可以集成在基带芯片中，收发器710可以集成在射频芯片中。该处理器720和存储器730与收发器710也可以是集成在同一个芯片上的器件。本申请对此不作限定。
可选地，该通信装置700是配置在第一设备中的部件，如芯片、芯片系统等。
可选地，该通信装置700是配置在第二设备中的部件，如芯片、芯片系统等。
其中，收发器720也可以是通信接口，如输入/输出接口、电路等。该收发器720与处理器710和存储器730都可以集成在同一个芯片中，如集成在基带芯片中。
本申请还提供了一种处理装置，包括至少一个处理器，所述至少一个处理器用于执行存储器中存储的计算机程序，以使得所述处理装置执行上述方法实施例中第一设 备执行的方法第二设备。
本申请实施例还提供了一种处理装置，包括处理器和输入输出接口。所述输入输出接口与所述处理器耦合。所述输入输出接口用于输入和/或输出信息。所述信息包括指令和数据中的至少一项。所述处理器用于执行计算机程序，以使得所述处理装置执行上述方法实施例中第一设备执行的方法第二设备。
本申请实施例还提供了一种处理装置，包括处理器和存储器。所述存储器用于存储计算机程序，所述处理器用于从所述存储器调用并运行所述计算机程序，以使得所述处理装置执行上述方法实施例中第一设备执行的方法第二设备。
应理解，上述处理装置可以是一个或多个芯片。例如，该处理装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。
应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行上述方法实施例中第一设备或第二设备执行的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读存储介质，该计算 机可读存储介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行上述方法实施例中第一设备或第二设备执行的方法。
根据本申请实施例提供的方法，本申请还提供一种通信系统，该通信系统可以包括前述的第一设备和第二设备。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (36)

  1. 一种通信方法，其特征在于，所述方法包括：
    第一设备确定第一频率单元；
    所述第一设备在所述第一频率单元上和第二设备进行通信；
    其中，所述第一频率单元对应的第一信道栅格的粒度小于或等于第二频率单元对应的第二信道栅格的粒度，所述第二频率单元用于第一设备和第三设备通信，所述第一频率单元与所述第二频域单元位于同一个工作频带。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第一设备向所述第二设备发送第一配置信息，所述第一配置信息用于指示以下至少之一：
    上行偏移量；
    下行频率位置与上行频率位置之间的频域间隔；
    上行频率单元。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一频率单元内的第一信道栅格所在的频率位置对应所述第一频率单元内一个资源元素的频率位置，所述资源元素在频域上的索引根据所述第一频率单元的传输带宽或者所述第二频率单元的传输带宽确定。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，所述第一频率单元的资源块和所述第二频率单元的资源块边界对齐，或者，所述第一频率单元的子载波和所述第二频率单元的子载波边界对齐。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，
    所述第一频率单元包括于所述第二频率单元的传输带宽内，所述第一频率单元的资源块和所述第二频率单元的资源块边界对齐；
    或者，
    所述第一频率单元包括于所述第二频率单元的保护带内，所述第一频率单元的子载波和所述第二频率单元的子载波边界对齐；
    或者，
    所述第一频率单元不包括于所述第二频率单元，所述第一频率单元和所述第二频率单元之间的频域间隔小于阈值，所述第一频率单元的子载波和所述第二频率单元的子载波边界对齐。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，所述第一信道栅格的粒度为根据以下至少之一确定：
    所述第一频率单元的部署模式；
    所述第一频率单元的子载波间隔。
  7. 根据权利要求1至5任一项所述的方法，其特征在于，在同一个工作频带内，所述第二信道栅格的粒度为100kHz，所述第一信道栅格的粒度为5kHz、10kHz或20kHz的整数倍。
  8. 根据权利要求1至7任一项所述的方法，其特征在于，所述第一频率单元对应 的射频参考频率FREF满足：FREF＝FREF-Offs+ΔFGlobal(NREF–NREF-Offs)+offset；其中，FREF-Offs为射频参考频率偏移值，ΔFGlobal为全局信道栅格的粒度，NREF为新空口绝对无线电频率信道编号NR-ARFCN，NREF-Offs为NR-ARFCN偏移值，offset为频率偏移量，offset的取值为{-50，-45，-40，-35，-30，-25，-20，-15，-10，-5，0,5,10,15,20,25,30,35,40,45,50}kHz中的一项。
  9. 根据权利要求1至8任一项所述的方法，其特征在于，所述第一频率单元包括用于传输上行信号的上行频率单元，和/或，用于传输下行信号的下行频率单元；
    所述第一设备确定第一频率单元，包括：
    所述第一设备根据上行频率位置和上行偏移量，确定所述上行频率单元；和/或，
    所述第一设备根据下行频率位置和下行偏移量，确定所述下行频域单元；
    所述第一设备确定第一频率单元之前，包括：
    所述第一设备根据所述下行频率单元所在的频带类型、所述第二设备的第一能力、所述第二设备的类型、所述下行频率单元承载的信号所在的时域资源类型、所述上行频率单元承载的信号所在的时域资源类型中的至少一项，确定所述上行偏移量和/或所述下行偏移量，其中，所述第一能力为是否支持将所述上行信号移频至所述下行频率单元所在的下行传输频带之外的上行传输频带。
  10. 根据权利要求9所述的方法，其特征在于，
    所述下行频率单元位于所述下行传输频带，
    所述第一能力为支持将所述上行信号移频至所述下行传输频带之外的上行传输频带，所述上行偏移量为第一数值或第二数值；或者，所述第一能力为不支持将所述上行信号移频至所述下行传输频带之外的上行传输频带，所述上行偏移量为所述第一数值；
    或者，所述下行频率单元位于上行传输频带，
    所述下行偏移量和所述上行偏移量均为第一数值或第二数值。
  11. 根据权利要求10所述的方法，其特征在于，所述下行传输频带和所述上行传输频带位于同一工作频带。
  12. 根据权利要求10或11所述的方法，其特征在于，
    所述上行传输频带用于长期演进LTE上行通信，所述上行偏移量为第二数值；或，
    所述上行传输频带不用于LTE上行通信，所述上行偏移量为第一数值。
  13. 根据权利要求9所述的方法，其特征在于，
    所述第一频率单元位于TDD工作频带，所述下行信号占用下行时域资源，且所述上行信号占用上行时域资源，所述下行偏移量和所述上行偏移量均为第一数值或第二数值；或者
    所述下行信号和所述上行信号均占用下行时域资源，所述下行偏移量和所述上行偏移量均为第一数值；或者
    所述下行信号和所述上行信号均占用上行时域资源，所述下行偏移量和所述上行偏移量均为第一数值或第二数值。
  14. 根据权利要求13所述的方法，其特征在于，
    所述上行时域资源用于LTE上行通信，所述下行偏移量和所述上行偏移量为第二 数值；或，
    所述上行时域资源不用于LTE上行通信，所述下行偏移量和所述上行偏移量为第一数值。
  15. 根据权利要求10至14任一项所述的方法，其特征在于，所述第一数值为0，所述第二数值为7.5kHz。
  16. 根据权利要求1至15任一项所述的方法，其特征在于，
    所述第二频率单元位于上行传输频带，所述第一频率单元中的上行频率单元位于所述第二频率单元的传输带宽内，所述第一频率单元中的下行频率单元位于所述第二频率单元的保护带内；或者，
    所述第二频率单元位于下行传输频带，所述下行频率单元位于所述第二频率单元的传输带宽内，所述上行频率单元位于所述第二频率单元的保护带内；或者，
    所述第一频率单元位于TDD工作频带，所述下行频率单元传输的下行信号和所述上行频率单元传输的、所述下行信号对应的上行信号均占用下行时域资源，所述下行频率单元位于所述第二频率单元的传输带宽内，所述上行频率单元位于所述第二频率单元的保护带内；或者，
    所述第一频率单元位于TDD工作频带，所述下行频率单元传输的下行信号和所述上行频率单元传输的、所述下行信号对应的上行信号均占用上行时域资源，所述下行频率单元位于所述第二频率单元的保护带内，所述上行频率单元位于所述第二频率单元的保护带内。
  17. 一种通信装置，其特征在于，包括：
    处理单元，用于确定第一频率单元；
    收发单元，用于在所述第一频率单元上和第二设备进行通信；
    其中，所述第一频率单元对应的第一信道栅格的粒度小于或等于第二频率单元对应的第二信道栅格的粒度，所述第二频率单元用于所述通信装置和第三设备通信，所述第一频率单元与所述第二频域单元位于同一个工作频带。
  18. 根据权利要求17所述的装置，其特征在于，所述收发单元还用于：
    向所述第二设备发送第一配置信息，所述第一配置信息用于指示以下至少之一：
    上行偏移量；
    下行频率位置与上行频率位置之间的频域间隔；
    上行频率单元。
  19. 根据权利要求17至18任一项所述的装置，其特征在于，所述第一频率单元内的第一信道栅格所在的频率位置对应所述第一频率单元内一个资源元素的频率位置，所述资源元素在频域上的索引根据所述第一频率单元的传输带宽或者所述第二频率单元的传输带宽确定。
  20. 根据权利要求17至19任一项所述的装置，其特征在于，所述第一频率单元的资源块和所述第二频率单元的资源块边界对齐，或者，所述第一频率单元的子载波和所述第二频率单元的子载波边界对齐。
  21. 根据权利要求17至20任一项所述的装置，其特征在于，
    所述第一频率单元包括于所述第二频率单元的传输带宽内，所述第一频率单元的 资源块和所述第二频率单元的资源块边界对齐；
    或者，
    所述第一频率单元包括于所述第二频率单元的保护带内，所述第一频率单元的子载波和所述第二频率单元的子载波边界对齐；
    或者，
    所述第一频率单元不包括于所述第二频率单元，所述第一频率单元和所述第二频率单元之间的频域间隔小于阈值，所述第一频率单元的子载波和所述第二频率单元的子载波边界对齐。
  22. 根据权利要求17至21任一项所述的装置，其特征在于，所述第一信道栅格的粒度为根据以下至少之一确定：
    所述第一频率单元的部署模式；
    所述第一频率单元的子载波间隔。
  23. 根据权利要求17至21任一项所述的装置，其特征在于，在同一个工作频带内，所述第二信道栅格的粒度为100kHz，所述第一信道栅格的粒度为5kHz、10kHz或20kHz的整数倍。
  24. 根据权利要求17至23任一项所述的装置，其特征在于，所述第一频率单元对应的射频参考频率FREF满足：FREF＝FREF-Offs+ΔFGlobal(NREF–NREF-Offs)+offset；其中，FREF-Offs为射频参考频率偏移值，ΔFGlobal为全局信道栅格的粒度，NREF为新空口绝对无线电频率信道编号NR-ARFCN，NREF-Offs为NR-ARFCN偏移值，offset为频率偏移量，offset的取值为{-50，-45，-40，-35，-30，-25，-20，-15，-10，-5，0,5,10,15,20,25,30,35,40,45,50}kHz中的一项。
  25. 根据权利要求17至24任一项所述的装置，其特征在于，所述第一频率单元包括用于传输上行信号的上行频率单元，和/或，用于传输下行信号的下行频率单元；
    所述第一设备确定第一频率单元，包括：
    所述第一设备根据上行频率位置和上行偏移量，确定所述上行频率单元；和/或，
    所述第一设备根据下行频率位置和下行偏移量，确定所述下行频域单元；
    所述第一设备确定第一频率单元之前，包括：
    所述第一设备根据所述下行频率单元所在的频带类型、所述第二设备的第一能力、所述第二设备的类型、所述下行频率单元承载的信号所在的时域资源类型、所述上行频率单元承载的信号所在的时域资源类型中的至少一项，确定所述上行偏移量和/或所述下行偏移量，其中，所述第一能力为是否支持将所述上行信号移频至所述下行频率单元所在的下行传输频带之外的上行传输频带。
  26. 根据权利要求25所述的装置，其特征在于，
    所述下行频率单元位于所述下行传输频带，
    所述第一能力为支持将所述上行信号移频至所述下行传输频带之外的上行传输频带，所述上行偏移量为第一数值或第二数值；或者，所述第一能力为不支持将所述上行信号移频至所述下行传输频带之外的上行传输频带，所述上行偏移量为所述第一数值；
    或者，所述下行频率单元位于上行传输频带，
    所述下行偏移量和所述上行偏移量均为第一数值或第二数值。
  27. 根据权利要求26所述的装置，其特征在于，所述下行传输频带和所述上行传输频带位于同一工作频带。
  28. 根据权利要求26或27所述的装置，其特征在于，
    所述上行传输频带用于长期演进LTE上行通信，所述上行偏移量为第二数值；或，
    所述上行传输频带不用于LTE上行通信，所述上行偏移量为第一数值。
  29. 根据权利要求25所述的装置，其特征在于，
    所述第一频率单元位于TDD工作频带，所述下行信号占用下行时域资源，且所述上行信号占用上行时域资源，所述下行偏移量和所述上行偏移量均为第一数值或第二数值；或者
    所述下行信号和所述上行信号均占用下行时域资源，所述下行偏移量和所述上行偏移量均为第一数值；或者
    所述下行信号和所述上行信号均占用上行时域资源，所述下行偏移量和所述上行偏移量均为第一数值或第二数值。
  30. 根据权利要求29所述的装置，其特征在于，
    所述上行时域资源用于LTE上行通信，所述下行偏移量和所述上行偏移量为第二数值；或，
    所述上行时域资源不用于LTE上行通信，所述下行偏移量和所述上行偏移量为第一数值。
  31. 根据权利要求26至30任一项所述的装置，其特征在于，所述第一数值为0，所述第二数值为7.5kHz。
  32. 根据权利要求17至31任一项所述的装置，其特征在于，
    所述第二频率单元位于上行传输频带，所述第一频率单元中的上行频率单元位于所述第二频率单元的传输带宽内，所述第一频率单元中的下行频率单元位于所述第二频率单元的保护带内；或者，
    所述第二频率单元位于下行传输频带，所述下行频率单元位于所述第二频率单元的传输带宽内，所述上行频率单元位于所述第二频率单元的保护带内；或者，
    所述第一频率单元位于TDD工作频带，所述下行频率单元传输的下行信号和所述上行频率单元传输的、所述下行信号对应的上行信号均占用下行时域资源，所述下行频率单元位于所述第二频率单元的传输带宽内，所述上行频率单元位于所述第二频率单元的保护带内；或者，
    所述第一频率单元位于TDD工作频带，所述下行频率单元传输的下行信号和所述上行频率单元传输的、所述下行信号对应的上行信号均占用上行时域资源，所述下行频率单元位于所述第二频率单元的保护带内，所述上行频率单元位于所述第二频率单元的保护带内。
  33. 一种通信设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至16中任一项所述的方法。
  34. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机指 令，使得安装有所述芯片的设备执行如权利要求1至16中任一项所述的方法。
  35. 一种计算机可读存储介质，其特征在于，用于存储计算机程序指令，所述计算机程序使得计算机执行如权利要求1至16中任一项所述的方法。
  36. 一种计算机程序产品，其特征在于，包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至16中任一项所述的方法。
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