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WO2025208269A1 - Procédé et appareil d'indication d'informations, dispositif et support de stockage - Google Patents

Procédé et appareil d'indication d'informations, dispositif et support de stockage

Info

Publication number
WO2025208269A1
WO2025208269A1 PCT/CN2024/085189 CN2024085189W WO2025208269A1 WO 2025208269 A1 WO2025208269 A1 WO 2025208269A1 CN 2024085189 W CN2024085189 W CN 2024085189W WO 2025208269 A1 WO2025208269 A1 WO 2025208269A1
Authority
WO
WIPO (PCT)
Prior art keywords
information
sequence
data channel
length
control channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/085189
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English (en)
Chinese (zh)
Inventor
丁伊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2024/085189 priority Critical patent/WO2025208269A1/fr
Publication of WO2025208269A1 publication Critical patent/WO2025208269A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the embodiments of the present application relate to the field of communication technology, and in particular to an information indication method, apparatus, device, and storage medium.
  • Zero-power Internet of Things can also be called Ambient power enabled IoT, or Ambient IoT for short.
  • the embodiments of the present application provide an information indication method, apparatus, device, and storage medium.
  • the technical solution is as follows:
  • the first information is indicated through at least one of a sequence, a control channel, and a data channel.
  • an information indication device comprising:
  • the processing module is configured to indicate the first information through at least one of a sequence, a control channel, and a data channel.
  • a communication device comprising a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program to implement the above-mentioned information indication method.
  • a computer-readable storage medium in which a computer program is stored.
  • the computer program is configured to be executed by a processor to implement the above-mentioned information indication method.
  • Communication information such as control information
  • Communication information is indicated through at least one of a sequence, a control channel, and a data channel.
  • This method is adaptable to different frame structures and can flexibly utilize sequences and/or different communication channels to effectively indicate communication information.
  • FIG2 is a schematic diagram of the basic structure of a zero-power communication system provided by an embodiment of the present application.
  • FIG3 is a schematic diagram of a radio frequency energy harvesting principle provided by an embodiment of the present application.
  • FIG4 is a schematic diagram of a backscatter communication principle provided by an embodiment of the present application.
  • FIG5 is a schematic diagram of a resistive load modulation circuit structure provided by an embodiment of the present application.
  • FIG6 is a schematic diagram of two A-IOT deployment scenarios provided in one embodiment of the present application.
  • FIG7 is a schematic diagram of a warehouse inventory task provided by one embodiment of the present application.
  • FIG8 is a schematic diagram of two frame structures provided by an embodiment of the present application.
  • FIG9 is a flowchart of an information indication method provided by an embodiment of the present application.
  • FIG10 is a schematic diagram of waveform changes of transmission information provided by an embodiment of the present application.
  • FIG11 is a schematic diagram of a working cycle provided by an embodiment of the present application.
  • FIG12 is a schematic diagram of a data channel structure provided by an embodiment of the present application.
  • FIG13 is a block diagram of an information indication device provided by one embodiment of the present application.
  • FIG14 is a schematic structural diagram of a communication device provided in one embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • NR New Radio
  • LTE-B LTE on unlicensed spectrum
  • the terminal device 10 may refer to a UE (User Equipment), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user apparatus.
  • UE User Equipment
  • an access terminal a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user apparatus.
  • the terminal device 10 may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5GS (5th Generation System) or a terminal device in a future evolved PLMN (Public Land Mobile Network), etc., and the embodiments of the present application are not limited thereto.
  • the above-mentioned devices are collectively referred to as terminal devices.
  • the number of terminal devices 10 is generally multiple, and one or more terminal devices 10 may be distributed in a cell managed by each access network device 20.
  • Terminal equipment can also be referred to as terminal or UE for short. Those skilled in the art will understand that Its meaning.
  • the access network device 20 is a device deployed in the access network to provide wireless communication functions for the terminal device 10.
  • the access network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc.
  • the names of devices with access network device functions may be different.
  • gNodeB or gNB With the evolution of communication technology, the name "access network device" may change.
  • access network devices For the convenience of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal device 10 are collectively referred to as access network devices.
  • a communication relationship can be established between the terminal device 10 and the core network network element 30 through the access network device 20.
  • the access network device 20 may be an Evolved Universal Terrestrial Radio Access Network (EUTRAN) or one or more eNodeBs in the EUTRAN.
  • EUTRAN Evolved Universal Terrestrial Radio Access Network
  • the access network device 20 may be a Radio Access Network (RAN) or one or more gNBs in the RAN.
  • RAN Radio Access Network
  • the "network device" refers to the access network device 20, such as a base station.
  • Core network elements 30 are deployed in the core network. Their primary functions are to provide user connectivity, user management, and service bearer services. They act as the bearer network interface to external networks.
  • core network elements in a 5G NR system may include elements such as the Access and Mobility Management Function (AMF), the User Plane Function (UPF), and the Session Management Function (SMF).
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • SMF Session Management Function
  • the access network device 20 and the core network element 30 communicate with each other via an air interface technology, such as the NG interface in a 5G NR system.
  • the access network device 20 and the terminal device 10 communicate with each other via an air interface technology, such as the Uu interface.
  • the "5G NR system" in the embodiments of the present application may also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning.
  • the technical solutions described in the embodiments of the present application may be applicable to LTE systems, 5G NR systems, and subsequent evolution systems of 5G NR systems (e.g., B5G (Beyond 5G) systems, 6G systems (6th Generation Systems, sixth generation mobile communication systems)), and other communication systems such as NB-IoT (Narrow Band Internet of Things) systems, but this application does not limit this.
  • B5G Beyond 5G
  • 6G systems 6th Generation Systems, sixth generation mobile communication systems
  • NB-IoT Narrow Band Internet of Things
  • a network device can provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) on a carrier used by the cell.
  • the cell can be a cell corresponding to a network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell.
  • the small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • Zero-power Internet of Things can also be called Ambient power enabled IoT, or Ambient IoT (environmental Internet of Things) for short. In some technical literature, it is also called passive IoT (passive Internet of Things).
  • Ambient IoT device refers to an IoT device that uses various environmental energies (such as wireless radio frequency energy, light energy, solar energy, thermal energy, mechanical energy, and other environmental energies) to drive itself. This type of device may have no energy storage capacity or a very limited energy storage capacity (such as using a capacitor with a capacity of tens of uF). Compared with existing IoT devices, Ambient IoT devices have many advantages such as no conventional battery, no maintenance, small size, low complexity and low cost, and a long life cycle.
  • Zero-power communication uses energy harvesting and backscattering communication technology.
  • the zero-power communication network consists of network devices and zero-power devices, as shown in Figure 2.
  • the network device is used to send wireless power supply signals, downlink communication signals to the zero-power devices, and receive backscattering signals from the zero-power devices.
  • a basic zero-power device includes an energy harvesting module, a backscattering communication module, and a power supply module.
  • the zero-power device may also have a memory or sensor to store some basic information (such as object identification, etc.) or obtain sensor data such as ambient temperature and humidity.
  • the RF energy harvesting module uses the principle of electromagnetic induction to harvest electromagnetic wave energy from space, thereby obtaining the energy needed to operate zero-power devices. This energy is used to drive low-power demodulation and modulation modules, sensors, and memory readout. Therefore, zero-power devices do not require traditional batteries.
  • a zero-power communication terminal receives wireless signals sent by the network, modulates the wireless signals, loads the information to be sent, and radiates the modulated signals from the antenna.
  • This information transmission process is called backscatter communication.
  • Backscatter and load modulation functions are inseparable.
  • Load modulation adjusts and controls the circuit parameters of the zero-power device's oscillation circuit according to the rhythm of the data stream, causing parameters such as the impedance of the electronic tag to change accordingly, thereby completing the modulation process.
  • Load modulation technology mainly includes two methods: resistive load modulation and capacitive load modulation.
  • resistive load modulation a resistor is connected in parallel to the load, and the resistor is turned on or off based on the control of the binary data stream, as shown in Figure 5 below.
  • the on-off switching of the resistor causes the circuit voltage to change, thus implementing amplitude shift keying (ASK) modulation. That is, the amplitude of the backscattered signal of the zero-power device is adjusted to achieve signal modulation and transmission.
  • ASK amplitude shift keying
  • capacitive load modulation the circuit resonant frequency can be changed by switching the capacitor on and off, realizing frequency shift keying (FSK) modulation, that is, signal modulation and transmission are achieved by adjusting the operating frequency of the backscattered signal of the zero-power device.
  • FSK frequency shift keying
  • the zero-power device uses load modulation to modulate the incoming signal, thereby realizing the backscatter communication process. Therefore, the zero-power device has significant advantages:
  • the terminal does not actively transmit signals, so it does not require complex RF links, such as PA (Power Amplifier), RF filters, etc.
  • PA Power Amplifier
  • RF filters etc.
  • the terminal does not need to actively generate high-frequency signals, so it does not need a high-frequency crystal oscillator;
  • zero-power communication can be widely used in various industries, such as logistics for vertical industries, smart warehousing, smart agriculture, energy and electricity, industrial Internet, etc.; it can also be applied to personal applications such as smart wearables and smart homes.
  • zero-power devices Based on the energy source and usage of zero-power devices, zero-power devices can be divided into the following types:
  • Zero-power devices do not require internal batteries. When they approach network devices (such as the reader/writer of an RFID (Radio Frequency Identification) system), they are within the near-field range formed by the radiation from the network device's antenna. Therefore, the zero-power device's antenna generates an induced current through electromagnetic induction, which drives the low-power chip circuit of the zero-power device. This implements tasks such as demodulating the forward link signal (downlink, the link from the network device to the zero-power device) and modulating the backward link signal (uplink, the link from the zero-power device to the network device). For backscatter links, the zero-power device uses backscattering to transmit signals.
  • network devices such as the reader/writer of an RFID (Radio Frequency Identification) system
  • the zero-power device's antenna generates an induced current through electromagnetic induction, which drives the low-power chip circuit of the zero-power device. This implements tasks such as demodulating the forward link signal (downlink, the link from the network device to the zero-power device)
  • the passive zero-power device does not require a built-in battery to drive either the forward link or the reverse link, and is a truly zero-power device.
  • Passive zero-power devices do not require batteries, and the RF circuit and baseband circuit are very simple. For example, they do not require devices such as LNA (Low Noise Amplifier), PA, crystal oscillator, ADC (Analog-to-Digital Converter), etc. Therefore, they have many advantages such as small size, light weight, very low price, and long service life.
  • LNA Low Noise Amplifier
  • PA Low Noise Amplifier
  • PA crystal oscillator
  • ADC Analog-to-Digital Converter
  • Semi-passive zero-power devices do not have conventional batteries installed, but use RF (Radio Frequency) energy.
  • the harvesting module collects radio wave energy, or uses solar, light, thermal, or kinetic energy harvesting modules to collect energy, and stores the collected energy in an energy storage unit (such as a capacitor).
  • the energy storage unit then drives the low-power chip circuitry of the zero-power device, performing tasks such as demodulating forward link signals and modulating backward link signals. For backscatter links, the zero-power device uses backscattering to transmit signals.
  • the semi-passive zero-power device does not require a built-in battery to drive either the forward link or the reverse link. Although it uses energy stored in capacitors during operation, the energy comes from the radio energy collected by the energy harvesting module. Therefore, it is also a truly zero-power device.
  • Semi-passive zero-power devices inherit many advantages of passive zero-power devices, so they have many advantages such as small size, light weight, very low price, and long service life.
  • the zero-power devices used in some scenarios can also be active zero-power devices.
  • Such terminals can have built-in batteries (conventional batteries, such as dry batteries, rechargeable lithium batteries, etc.).
  • the battery is used to drive the low-power chip circuit of the zero-power device. It realizes the demodulation of the forward link signal and the modulation of the reverse link signal.
  • the zero-power device uses the backscatter implementation method to transmit the signal. Therefore, the zero power consumption of this type of terminal is mainly reflected in the fact that the signal transmission of the reverse link does not require the terminal's own power, but uses the backscatter method.
  • the active zero-power device uses a battery, due to the sampling of ultra-low power communication technology, the power consumption is very low, so compared with the existing technology, the battery life can be greatly improved.
  • Active zero-power devices with built-in batteries to power the RFID chip, increase the tag's read and write distance and improve communication reliability. Therefore, they are suitable for scenarios with relatively high requirements for communication distance and read latency.
  • zero-power IoT like other IoT business types, will also focus on uplink business. Therefore, based on the way zero-power terminals send data, they can be divided into the following types:
  • These zero-power devices use the aforementioned backscattering method to transmit uplink data. They lack active transmitters, only backscattering transmitters. Therefore, when these terminals transmit data, they require network equipment to provide a carrier, which they then use to perform backscattering to achieve data transmission.
  • These zero-power devices use active transmitters with active transmission capabilities for uplink data transmission. Therefore, when sending data, these zero-power devices can use their own active transmitters to send data without the need for network equipment to provide a carrier.
  • active transmitters suitable for zero-power devices include ultra-low-power ASK and ultra-low-power FSK transmitters. Based on current implementations, these transmitters can reduce overall power consumption to 400-600uW when transmitting a 100uW signal.
  • This type of terminal supports both backscatter and active transmitters.
  • the terminal can determine which uplink signal transmission method to use: backscatter or active transmitter, based on various conditions (such as battery life and available ambient energy) or based on network device scheduling.
  • IoT Internet of Things
  • 3GPP 3rd Generation Partnership Project
  • NB-IoT Narrow Band Internet of Things
  • MTC Machine Type Communication
  • RedCap RedCap
  • Certain IoT scenarios may encounter extreme environments such as high temperature, extremely low temperature, high humidity, high voltage, high radiation, or high-speed movement. Examples include ultra-high voltage substations, high-speed train track monitoring, environmental monitoring in high-altitude cold regions, and industrial production lines. In these scenarios, existing IoT terminals will not function due to the operating environment limitations of conventional power supplies. Furthermore, extreme operating environments are not conducive to IoT maintenance, such as battery replacement.
  • IoT terminals are sufficiently affordable to enhance their competitiveness compared to alternative technologies. For example, in logistics or warehousing, to facilitate the management of large quantities of circulating items, IoT terminals can be attached to each item. Communication between the terminal and the logistics network enables precise management of the entire logistics process and lifecycle. These scenarios require IoT terminals to be competitively priced.
  • Object recognition such as logistics, production line product management, and supply chain management
  • Positioning such as indoor positioning, intelligent object search, and production line item positioning
  • Category 1 A-IoT devices ⁇ 1uW peak power consumption, with energy storage, an initial sampling frequency offset of 10X ppm, no uplink or downlink power amplifiers, and uplink transmissions via backscattering of an external carrier.
  • X ranges from 4 to 5, i.e., [4, 5].
  • Category 2 A-IOT devices These devices have peak power consumption of less than a few hundred uW, have energy storage, an initial sampling frequency offset of 10X ppm, may be equipped with uplink and/or downlink power amplifiers, and can generate uplink transmissions internally (i.e., actively transmit) or send uplink transmissions by backscattering an external carrier.
  • X ranges from 4 to 5, i.e., [4, 5].
  • A-IOT mainly considers the following two deployment scenarios/topologies, as shown in Figure 6:
  • the base station directly performs two-way signaling and/or data communication with the A-IOT device.
  • the base station sending the A-IOT device and the base station receiving the A-IOT may be two different base stations.
  • A-IoT devices communicate bidirectionally with an intermediate node, which relays signaling and/or data between the base station (BS) and the A-IoT device.
  • the intermediate node was ultimately determined to be a user equipment (UE) under network control, located indoors.
  • UE user equipment
  • Figure 7 shows the inventory counting mechanism in the existing RFID system, namely the slot-based aloha mechanism.
  • the length, starting position, and ending position of each slot are not fixed because the RFID system is an asynchronous system.
  • the starting position and ending position of each slot in an inventory round are fixed.
  • the end position is actually defined based on the Query and QueryRep (QueryRepeat) instructions.
  • time slot 0 in Figure 7 is the end time of the reader (reader, which can be understood as the base station or intermediate node in AIOT) sending the Query instruction to the end time of the next QueryRep instruction.
  • the starting and ending points of each slot are the end times of the QueryRep instructions of the previous slot and the current slot.
  • tag a generates a counter of 0, so it can be accessed directly in slot 0.
  • tags b and c generate a counter of 2, but they need to receive two QueryRep commands before the counter reaches 0, that is, in slot 2. Therefore, tags b and c are accessed in slot 2.
  • the initial value of the counter also corresponds to the index of a slot within an inventory round (if the slot index starts at 0). That is, an inventory round consists of 2 ⁇ Q slots, indexed from 0 to (2 ⁇ Q-1).
  • different tags are accessed in different slots by randomly generating counter values.
  • tag a When a tag accesses a slot, for example, tag a accesses slot 0 in Figure 7, tag a first sends a 16-bit random sequence RN16 to the reader as a temporary identifier. After receiving RN16, the reader returns a Response to tag a, which includes the same RN16. If the RN16 received by tag a matches the RN16 it previously sent, tag a sends the EPC (Electronic Product Code) to the reader. After receiving the EPC, the reader sends a Queryrep. This signaling indicates to tag a that the EPC has been received and that tag a's inventory has been successful. It also indicates to all tags that their counter values should be decremented by 1, starting a new slot where other tags can access.
  • EPC Electronic Product Code
  • tag b and tag c both report RN16 in slot 2, so a collision occurs, and both need to wait until inventory round 2 to report information.
  • the weaker RN16 won't interfere with the stronger RN16 enough to affect its demodulation. Therefore, the stronger RN16 can still successfully demodulate. Consequently, the tag inventory for the stronger RN16 succeeds, while the tag inventory for the weaker RN16 fails.
  • the reader receives a high-power RN16 for tag b and a low-power RN16 for tag c, the reader will demodulate the RN16 for tag b and send the RN16 containing tag b to tag b.
  • Tag b then reports the EPC, and the inventory succeeds.
  • a collision can cause the inventory of some A-IoT devices to fail, requiring them to wait until the next round.
  • Figure 8 shows a schematic diagram of two frame structures provided by an embodiment of the present application, wherein sub-figure 1 is one frame structure and sub-figure 2 is another frame structure.
  • sub-figure 1 is one frame structure
  • sub-figure 2 is another frame structure.
  • the two frame structures shown in Sub- Figures 1 and 2 have in common that a preamble (leading sequence) is designed before the control and/or data channel for timing calibration.
  • the preamble can also be used to indicate simple control information.
  • the difference lies in whether a separate control channel is designed.
  • a separate control channel is designed for transmitting control information, while the data channel is used to carry data.
  • the two channels have different functions, and the control channel and data channel can use different bit rates and different encoding methods.
  • no separate control channel is designed, so the data channel can carry both control information and data.
  • the control information is carried in the MAC CE (Media Access Control Element) of the data channel.
  • MAC CE Media Access Control Element
  • Step 910 The communication device indicates first information through at least one of a sequence, a control channel, and a data channel.
  • the sequence can be used for timing calibration or for indicating control information. Timing calibration is used to ensure clock synchronization between different devices in a wireless communication system, thereby achieving accurate data transmission and communication coordination.
  • the sequence is a preamble.
  • a control channel is a channel used to transmit control information in a communication system.
  • a data channel is a channel used to transmit data in a communication system.
  • Data can be in the form of a TB (Transport Block), a PDU (Protocol Data Unit), a packet, etc.
  • Control information includes, but is not limited to, the control information format, service type, transmission type, chip length, frame length, coding information, A-IOT device identification, cell identification, duty cycle information, energy-saving wake-up information, A-IOT device type, and scheduling request information described below.
  • Control information can also be referred to as signaling information or control signaling. Generally speaking, control information has fewer bits than data.
  • the data channel may also be used to transmit control information.
  • the communication device when the communication device is a network device or an intermediate node, the first information is indicated to the A-IOT device. In this case, it corresponds to the A-IOT downlink transmission described above.
  • the network device may be a base station, and the intermediate node may be a terminal device, such as a UE under network control.
  • the following will specifically explain how to indicate the first information according to at least one of the sequence, control channel, and data channel for three scenarios: applicable to both A-IOT downlink transmission and A-IOT uplink transmission, applicable only to A-IOT downlink transmission, and applicable only to A-IOT uplink transmission.
  • the first information may be indicated to the network device or the intermediate node.
  • the first information may be indicated to the network device or the intermediate node.
  • the first information includes a control information format.
  • the communication device indicates the control information format through a sequence.
  • Each control information format corresponds to one or more sequences.
  • the control information format is used to indicate the specific structure and specifications of the control information during the communication process.
  • Different control information formats can correspond to one or more specific sequences as needed.
  • the first sequence and the second sequence can correspond to the first control information format
  • the third sequence can correspond to the second control information format, wherein the first sequence, the second sequence, and the third sequence are different sequences
  • the first control information format and the second control information format are different control information formats.
  • the correspondence between sequences and control information formats can be configured by the network, preconfigured, or predefined by a standard, and this application does not limit this.
  • control information format is indicated by a sequence, and the control information is carried by a control channel.
  • control information format is indicated by a sequence, and the control information is carried by a data channel.
  • the above method can indicate the control information format through the sequence, and the receiving end can accurately decode the control information by determining the control information format.
  • control information format is related to at least one of the following: the length of the control information, and the indication field included in the control information.
  • the above method can indicate the length and indication field of the control information through a sequence.
  • the receiving end can determine the length and indication field of the control information, and identify the bit information corresponding to the control information from the transmission signal based on the length of the control information.
  • the specific content of the control information can be determined based on the indication field of the control information, such as the type of the control information, so as to perform corresponding operations.
  • the first information includes a service type.
  • the communication device indicates the service type through a sequence.
  • Each service type corresponds to one or more sequences.
  • DT services data transmission flows in a unidirectional manner, from a sending device to a receiving device, which then receives and processes the data.
  • DT services primarily involve sending downlink commands to enable A-IOT devices to perform specific actions. For example, in a smart home scenario, a "turn on the air conditioner" command is sent to an A-IOT device, and the A-IOT device executes the corresponding action.
  • the first and second sequences may correspond to DT service types
  • the third sequence may correspond to DO-DTT services
  • the fourth sequence may correspond to DO-A services, where the first, second, third, and fourth sequences are different sequences.
  • the correspondence between sequences and service types may be configured by the network, preconfigured, or predefined by a standard, and this application does not limit this.
  • the first sequence may correspond to multicast
  • the second sequence may correspond to multicast
  • the third sequence may correspond to broadcast, wherein the first sequence, the second sequence, and the third sequence are different sequences.
  • the correspondence between sequences and transmission types may be configured by the network, preconfigured, or predefined by a standard, and this application does not limit this.
  • the first sequence may correspond to a first chip length
  • the second sequence may correspond to a second chip length
  • the correspondence between sequences and chip lengths may be configured by the network, preconfigured, or predefined by a standard, and this application does not limit this.
  • the chip length is the length of bit 0 and/or bit 1; or, the chip length is the length of a high level and/or a low level.
  • the length of bit 0 is the same as the length of bit 1.
  • the chip length may be the time length of bit 0 and bit 1, that is, the chip length indicated by the communication device through the sequence is both the length of bit 0 and the length of bit 1. For example, if the communication device indicates through the sequence that the chip length is 1 millisecond, then the lengths of bit 0 and bit 1 are both 1 millisecond.
  • the length of bit 0 and the length of bit 1 are in a multiple relationship.
  • the chip length includes the length of bit 0 or bit 1, that is, the communication device only needs to indicate the length of bit 0 or bit 1 through the sequence.
  • the communication device can indicate that the chip length of bit 0 is 1 millisecond through the sequence, and assuming the multiple relationship is 2, the multiple relationship can be a multiple of bit 1 relative to bit 0, or a multiple of bit 0 relative to bit 1.
  • the multiple relationship is a multiple of bit 1 relative to bit 0, it can be determined that the chip length of bit 1 is 2 milliseconds.
  • the multiple relationship can be configured by the network, preconfigured, or predefined by the standard, and this application does not limit this.
  • the length of the low level is the same as the length of the high level.
  • the chip length can be the duration of the low level and the high level, that is, the chip length indicated by the communication device through the sequence is both the length of the high level and the length of the low level. For example, if the communication device indicates through the sequence that the chip length is 1 millisecond, then the length of the high level and the length of the low level are both 1 millisecond.
  • the length of the low level and the length of the high level are in a multiple relationship.
  • the chip length includes the length of the high level or the low level, that is, the communication device only needs to indicate the length of the high level or the low level through the sequence.
  • the communication device can indicate that the chip length of the low level through the sequence is 1 millisecond, and assuming that the multiple relationship is 2, the multiple relationship can be a multiple of the high level relative to the low level, or a multiple of the low level relative to the high level.
  • the multiple relationship is a multiple of the high level relative to the low level, then the chip length of the high level can be determined.
  • the multiple relationship may be configured by the network, preconfigured, or predefined by a standard, and this application does not limit this.
  • the above method can indicate the chip length through a sequence, and the receiving end can accurately demodulate the information carried by the control channel and/or data channel by determining the chip length.
  • the information carried by the control channel and/or data channel can be demodulated by determining the length of bit 0 and/or bit 1, or by the length of the high level and/or low level.
  • the A-IOT device or network device or intermediate node can determine the corresponding code chip length based on the first information.
  • the transmission signal is the frame structure shown in sub-figure 1 in Figure 8, it is used to demodulate the information carried by the control channel and the data channel according to the code chip length.
  • the transmission signal is the frame structure shown in sub-figure 2 in Figure 8, it is used to demodulate the information carried by the data channel according to the code chip length.
  • the frame length comprises at least one of: the length of the sequence and data channel; the length of the sequence, control channel and data channel; the length of the data channel; the length of the control channel and data channel.
  • the frame length refers to the number of information bits.
  • the frame length may be the number of bits of information carried by a communication channel, and optionally also includes the number of bits contained in a sequence, where the communication channel is a data channel and/or a control channel.
  • the length of the sequence and the data channel may be the sum of the number of bits contained in the sequence and the number of bits of information carried by the data channel.
  • a sequence can be used to indicate the frame length, and the receiving end can accurately demodulate the information carried by the control channel and/or data channel by determining the frame length.
  • the sequence can flexibly indicate different frame lengths, and the receiving end can accurately determine the end position of the frame based on the indicated frame length, thereby enabling the receiving end to accurately demodulate the information carried by the control channel and/or data channel.
  • the A-IOT device or network device or intermediate node can determine the corresponding frame length based on the first information.
  • the frame length is the length of the sequence and the data channel, it is used to demodulate the information carried by the sequence and the data channel in the frame structure shown in sub- Figure 2 of Figure 8 according to the length of the sequence and the data channel;
  • the frame length is the length of the sequence, the control channel and the data channel, it is used to demodulate the information carried by the sequence, the control channel and the data channel in the frame structure shown in sub- Figure 1 of Figure 8 according to the length of the sequence, the control channel and the data channel;
  • the frame length is the length of the data channel, it is used to demodulate the information carried by the data channel in the frame structure shown in sub- Figure 2 of Figure 8 according to the length of the data channel;
  • the frame length is the length of the control channel and the data channel, it is used to demodulate the information carried by the control channel and the data channel in the frame structure shown in sub- Figure 1 of Figure 8 according to
  • the first information includes coding information, and the communication device indicates the coding information through a sequence, and each type of coding information corresponds to one or more sequences.
  • the encoding information includes at least one of the following: Manchester encoding, Miller encoding, and pulse interval modulation (PIE).
  • PIE pulse interval modulation
  • the first sequence may correspond to Manchester coding; the second sequence may correspond to Miller coding; and the third sequence may correspond to pulse interval coding; wherein the first sequence, the second sequence, and the third sequence are different sequences.
  • the correspondence between sequences and coding information may be configured by the network, preconfigured, or predefined by a standard, and this application does not limit this.
  • the sequence can indicate the coding information
  • the receiving end can accurately decode the information carried by the control channel and/or data channel by determining the coding information.
  • the receiving end can determine the coding mode, and thus accurately decode the information carried by the control channel and/or data channel according to different coding modes.
  • the communication device can be a network device or an intermediate node, and the first information can be indicated to the A-IOT device.
  • the first information includes an A-IOT device identifier, and the communication device indicates the A-IOT device identifier through a sequence and a control channel; or, indicates the A-IOT device identifier through a sequence and a data channel.
  • A-IOT device identification refers to the information used to uniquely identify and recognize A-IOT devices, which can include the MAC address, device model, manufacturer information, unique identification code, EPC, RN16, etc. This identification information can help the system manage, locate and identify A-IOT devices, ensuring the normal operation and security of A-IOT devices.
  • the above method can indicate the A-IOT device identification through the sequence and control channel or through the sequence and data channel.
  • the A-IOT device can determine whether the transmission signal is a signal sent to its own device through the A-IOT device identification. For example, in the DT scenario, when the A-IOT device determines that the transmission signal is not a signal sent to itself, it will not execute the command included in the transmission signal. When the A-IOT device determines that the transmission signal is a signal sent to its own device, it will execute the command included in the transmission signal. This method can ensure the secure transmission and correct reception of information.
  • a portion of the A-IOT device identification is indicated by a sequence, and another portion of the A-IOT device identification is indicated by a control channel or a data channel.
  • the A-IOT device identification includes a total of Y bits, and the lowest K bits in the sequence are used to indicate a portion of the A-IOT device identification, i.e., K bits, where K and Y are positive integers and K is less than Y.
  • the other portion of the A-IOT device identification, i.e., Y-K bits can be indicated by a control channel or a data channel.
  • the values of K and Y can be predefined by a standard.
  • a portion of the A-IOT device identifier is indicated by a sequence, and another portion of the A-IOT device identifier is indicated by a control channel.
  • the K bits are indicated by the sequence, and the Y-K bits are indicated by the control channel.
  • a portion of the A-IOT device identifier is indicated by a sequence, and another portion of the A-IOT device identifier is indicated by a data channel.
  • the K bits are indicated by a sequence, and the Y-K bits are indicated by a data channel.
  • the A-IOT device can compare the partial A-IOT device identifier contained in the sequence with its own device identifier to preliminarily determine whether the transmission signal is a signal sent to itself. If there is a mismatch, the information carried by the subsequent data channel will not be demodulated. If there is a match, the information carried by the subsequent data channel will continue to be demodulated to obtain the complete A-IOT device identifier, thereby ultimately determining whether it is a signal sent to itself. If there is a match, the transmission signal is determined to be a signal sent to itself; if there is a mismatch, the transmission signal is determined not to be a signal sent to itself.
  • the above method indicates part of the A-IOT device identifier through a sequence and the other part of the A-IOT device identifier through a control channel or a data channel.
  • the A-IOT device identifier itself is matched with the A-IOT device identifier in two steps: the first step is a preliminary match, and the second step is a complete match.
  • This method on the one hand, can effectively reduce the error rate in communication and ensure the accuracy and reliability of transmitted data by matching the A-IOT device identifier in steps; on the other hand, it helps to reduce the invalid decoding of the transmission signal by the A-IOT device, thereby improving communication efficiency.
  • the first information includes a cell identifier, and the communication device indicates the cell identifier through a sequence and a control channel; or, indicates the cell identifier through a sequence and a data channel.
  • a cell is a relatively small, isolated area within a wireless communication network that provides communication services to devices.
  • a cell ID is an identifier that uniquely identifies a cell, typically expressed as numbers or characters.
  • the above method can indicate the cell identifier through the sequence and control channel or through the sequence and data channel.
  • the A-IOT device can determine whether it is the transmission signal of the target cell through the cell identifier.
  • the target cell can be the cell where the A-IOT device is located, the target cell can also be the service cell of the A-IOT device, or the target cell can also be the cell corresponding to the cell identifier stored by the A-IOT device.
  • the cell identity is indicated by a sequence and a control channel.
  • M bits are indicated by the sequence and N-M bits are indicated by the control channel.
  • the A-IOT device can compare the partial cell identifier contained in the sequence with the cell identifier stored in itself, so as to preliminarily determine whether to receive the transmission signal of the cell. If there is no match, the information carried by the subsequent control channel and the data channel will not be demodulated; if there is a match, the information carried by the subsequent control channel will continue to be demodulated to obtain the complete cell identifier, so as to determine whether it is the target cell.
  • the A-IOT device can compare the partial cell identifier contained in the sequence with the cell identifier stored in itself, so as to preliminarily determine whether to receive the transmission signal of the cell. If there is no match, the information carried by the subsequent data channel will not be demodulated; if there is a match, the information carried by the subsequent data channel will be demodulated. The information is demodulated to obtain the complete cell ID, thereby determining whether it is the target cell. If it matches, it is the target cell; if it does not match, it is not the target cell.
  • the first information includes duty cycle information, and the communication device indicates the duty cycle information through a sequence; or, indicates the duty cycle information through a control channel; or, indicates the duty cycle information through a data channel.
  • Figure 11 shows a schematic diagram of a duty cycle provided by an embodiment of the present application.
  • the A-IOT device receives a sequence, it determines the corresponding duty cycle configuration parameters based on the sequence to determine the duty cycle information.
  • the correspondence between the sequence and the duty cycle configuration parameters can be configured by the network, pre-configured, or pre-defined by the standard, and this application does not limit this.
  • the A-IOT device determines the corresponding duty cycle configuration parameters based on the duty cycle index included in the control information in the data channel to determine the duty cycle information.
  • the duty cycle information includes at least one of the following: duration of the duty cycle, length of active time in the duty cycle, and length of inactive time in the duty cycle.
  • the duration of a working cycle refers to the time interval between the start of the current activation and the start of the next activation.
  • the length of the active time refers to the length of time the A-IOT device is active during the working cycle
  • the length of the inactive time refers to the length of time the A-IOT device is inactive during the working cycle.
  • the A-IOT device In the active state, the A-IOT device is awake and able to perform tasks, such as signal reception. In the inactive state, the A-IOT device is dormant and does not perform tasks, such as signal reception.
  • the above method can indicate duty cycle information via a sequence, control channel, or data channel.
  • A-IOT devices can effectively plan resource utilization and improve energy efficiency. Specifically, by determining the duration of the duty cycle, the duration of the activation period, and the duration of the inactive period, A-IOT devices can monitor during the active period, such as monitoring the transmission signals of network devices or intermediate nodes, and sleep during the inactive period. This method helps reduce device energy consumption, extend battery life, and reduce dependence on energy. It can also optimize device performance, improve system stability and responsiveness, and reduce maintenance costs and extend device life.
  • the first information includes energy-saving wake-up information, and the communication device indicates the energy-saving wake-up information through a sequence.
  • a network device or intermediate node sends a frame structure 1101 or a frame structure 1102 to an A-IOT device.
  • the A-IOT device uses the energy-saving wake-up signal to determine whether it has been awakened. Once awakened, the A-IOT device needs to perform monitoring activities.
  • the energy-saving wake-up information is used to instruct to perform monitoring during the activation time of the next working cycle, or to instruct not to perform monitoring during the activation time of the next working cycle.
  • the first sequence may be used to indicate monitoring during the activation time of the next working cycle
  • the second sequence may be used to indicate not monitoring during the activation time of the next working cycle, wherein the first sequence and the second sequence are different sequences.
  • the correspondence between the sequence and the energy-saving wake-up information may be configured by the network, preconfigured, or predefined by a standard, and this application is not limited thereto.
  • the communication device is a network device or an intermediate node
  • the control channel can be an A-IOT downlink control channel or a PRDCCH (Physical reader to device control channel).
  • the data channel can be an A-IOT downlink data channel, a PRDSCH (Physical reader to device shared channel), or a PRDCH (Physical reader to device channel).
  • the first information includes an A-IOT device type.
  • the communication device indicates the A-IOT device type through a sequence.
  • Each A-IOT device type corresponds to one or more sequences.
  • the A-IOT device type includes at least one of the following: a first type and a second type, and the first type of A-IOT device and the second type of A-IOT device have different peak power consumptions.
  • the first sequence may correspond to the first type
  • the second sequence may correspond to the second type, wherein the first sequence and the second sequence are different sequences.
  • the correspondence between sequences and device types may be configured by the network, preconfigured, or predefined by a standard, and this application does not limit this.
  • the first information includes request scheduling information, and the communication device indicates the request scheduling information through a sequence; or, indicates the request scheduling information through a control channel; or, indicates the request scheduling information through a data channel.
  • the request information is used to send a request to a network device or an intermediate node to obtain data transmission resources or scheduling instructions.
  • the request scheduling information is indicated through a sequence or a control channel.
  • indicating the request scheduling information through a sequence means indirectly indicating the request scheduling information by indicating the sequence based on the correspondence between the sequence and the request scheduling information.
  • Indicating the request scheduling information through a control channel means indicating the request scheduling information through the control information carried by the control channel.
  • the request scheduling information is indicated through a sequence or a data channel.
  • indicating the request scheduling information through a sequence means indirectly indicating the request scheduling information by indicating the sequence based on the correspondence between the sequence and the request scheduling information.
  • Indicating the request scheduling information through a data channel means indicating the request scheduling information through the control information carried by the data channel.
  • the correspondence between the sequence and the request scheduling information can be configured by the network, pre-configured, or pre-defined by the standard, and this application does not limit the sequence.
  • the request scheduling information can also be indicated by data carried by the data channel.
  • the above method can indicate the request scheduling information through a sequence or control channel or data channel, and the network device or intermediate node can perform corresponding scheduling and processing according to the needs of the A-IOT device by determining the request scheduling information.
  • the scheduling request information is used to indicate the amount of A-IOT uplink data requested for scheduling.
  • the data volume of the A-IOT uplink data requested for scheduling refers to the bits or bytes corresponding to the uplink data to be transmitted or the sequence length of the uplink data to be transmitted.
  • the above-mentioned request scheduling information can be replaced by a buffer status report (Buffer Status Report, BSR).
  • BSR Buffer Status Report
  • a communication device indicates the EPC length via an RN16 sequence.
  • the communication device may be an A-IOT device, and the A-IOT device indicates the EPC length to a network device or an intermediate node via an RN16 sequence.
  • the EPC length refers to the number of bits in the EPC of the A-IOT device or the sequence length of the EPC.
  • tag a sends a frame structure to the reader.
  • the frame structure includes an RN16 sequence, where the RN16 sequence is a 16-bit sequence.
  • the reader can determine the length of the EPC corresponding to the RN16 sequence, thereby scheduling corresponding transmission resources for tag a to transmit the EPC of tag a.
  • the correspondence between the RN16 sequence and the EPC length can be configured by the network, preconfigured, or predefined by the standard, and this application does not limit this.
  • the scheduling request information may also include a transmission delay requirement, which indicates requirements regarding the maximum allowable transmission delay, the time interval between data packet arrivals, and other aspects.
  • a transmission delay requirement is a critical parameter that can impact the reliability and real-time nature of data transmission. This application does not limit the specific content of the scheduling request information.
  • the data channel carries control information and data, and the control information and data each have their own CRC (Cyclic Redundancy Check).
  • CRC is a checksum method used to detect errors during data transmission. Specifically, the sender divides the data and takes the remainder to generate a checksum. The receiver then performs the same checksum on the received data and compares the checksum to determine if any errors occurred during transmission.
  • control information and the data each have their own CRC.
  • the CRC of the control information is a first CRC and the CRC of the data is a second CRC.
  • the lengths of the first CRC and the second CRC may be the same or different.
  • the length of the first CRC may be 8 bits
  • the length of the second CRC may be 8 bits
  • the length of the second CRC may be 16 bits
  • the length of the second CRC may be 24 bits, which is not limited in this application.
  • the technical solution provided by this application indicates communication information, such as control information, through at least one of a sequence, a control channel, and a data channel.
  • This method is adaptable to different frame structures and can flexibly utilize sequences and/or different communication channels to effectively indicate communication information.
  • FIG 13 shows a block diagram of an information indication device provided by one embodiment of the present application.
  • This device has the function of implementing the above-mentioned information indication method. The function can be implemented by hardware or by hardware executing corresponding software.
  • This device can be the communication device described above, or it can be provided in a communication device. As shown in Figure 13, the device 1300 may include: a processing module 1310.
  • the processing module 1310 is configured to indicate first information through at least one of a sequence, a control channel, and a data channel.
  • the first information includes a control information format; the processing module 1310 is configured to indicate the control information format through the sequence, and each control information format corresponds to one or more sequences.
  • control information format is related to at least one of the following: the length of the control information, and the indication field included in the control information.
  • the first information includes a service type; the processing module 1310 is configured to indicate the service type through the sequence, and each service type corresponds to one or more sequences.
  • the service type includes at least one of the following: DT service, DO-DTT service, and DO-A service.
  • the first information includes a transmission type; the processing module 1310 is configured to indicate the transmission type through the sequence, and each transmission type corresponds to one or more sequences.
  • the transmission type includes at least one of the following: unicast, multicast, and broadcast.
  • the first information includes chip length; the processing module 1310 is configured to indicate the chip length through the sequence, and each chip length corresponds to one or more sequences.
  • the chip length is the length of bit 0 and/or bit 1; or, the chip length is the length of a high level and/or a low level.
  • the first information includes a frame length; the processing module 1310 is configured to indicate the frame length through the sequence, and each frame length corresponds to one or more sequences.
  • the frame length includes at least one of: the length of the sequence and the data channel; the length of the sequence, the control channel and the data channel; the length of the data channel; the length of the control channel and the data channel.
  • the encoding information includes at least one of the following: Manchester encoding, Miller encoding, and pulse interval encoding (PIE).
  • PIE pulse interval encoding
  • the first information includes an A-IOT device identifier; the processing module 1310 is configured to indicate the A-IOT device identifier through the sequence and the control channel; or, indicate the A-IOT device identifier through the sequence and the data channel.
  • a portion of the A-IOT device identification is indicated by the sequence, and another portion of the A-IOT device identification is indicated by the control channel or the data channel.
  • the first information includes a cell identifier; the processing module 1310 is configured to indicate the cell identifier through the sequence and the control channel; or, indicate the cell identifier through the sequence and the data channel.
  • a portion of the cell identity is indicated by the sequence, and another portion of the cell identity is indicated by the control channel or the data channel.
  • the first information includes energy-saving wake-up information; and the processing module 1310 is configured to indicate the energy-saving wake-up information through the sequence.
  • the first information includes an A-IOT device type; the processing module 1310 is configured to indicate the A-IOT device type through the sequence, and each A-IOT device type corresponds to one or more sequences.
  • the A-IOT device type includes at least one of the following: a first type and a second type, and the A-IOT device of the first type and the A-IOT device of the second type have different peak power consumption.
  • the requested scheduling information is used to indicate the data volume of the A-IOT uplink data requested to be scheduled.
  • the communication device is an A-IOT device, and the first information is indicated to a network device or an intermediate node.
  • the data channel carries control information and data, and the control information and the data each have their own CRC.
  • the device provided in the above embodiment realizes its function, it only uses the division of the above-mentioned functional modules as an example.
  • the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.
  • the communication device can be the aforementioned network device, intermediate node, or A-IOT device.
  • the communication device 1400 may include: at least one of a processor 1401, a transceiver 1402, and a memory 1403.
  • the processor 1401 is configured to implement various processing functions of the communication device 1400, such as the functions of the aforementioned processing module 1310.
  • the transceiver 1402 may include a receiver and a transmitter.
  • the receiver and the transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.
  • the memory 1403 may be connected to the processor 1401 and the transceiver 1402 .
  • the memory 1403 may be used to store a computer program executed by the processor, and the processor 1401 is used to execute the computer program to implement each step in the above method embodiment.
  • the communication device 1400 is the network device or the intermediate node described in the above embodiments, and the processor 1401 is configured to indicate the first information through at least one of a sequence, a control channel, and a data channel.
  • the communication device 1400 is the A-IOT device in the above embodiments, and the processor 1401 is configured to indicate the first information through at least one of a sequence, a control channel, and a data channel.
  • the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static access memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.
  • the present application also provides a computer-readable storage medium having a computer program stored therein, which is used to be executed by a processor to implement the above-mentioned information indication method.
  • the computer-readable storage medium may include: ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives), or an optical disk.
  • the random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).
  • An embodiment of the present application further provides a chip, which includes a programmable logic circuit and/or program instructions, and when the chip is running, is used to implement the above-mentioned information indication method.
  • An embodiment of the present application also provides a computer program product, which includes computer instructions.
  • the computer instructions are stored in a computer-readable storage medium, and a processor reads and executes the computer instructions from the computer-readable storage medium to implement the above-mentioned information indication method.
  • predefined may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including a terminal device and a network device), and the present application does not limit the specific implementation method.
  • predefined may refer to information defined in a protocol.
  • Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another.
  • the storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention se rapporte au domaine technique des communications. Elle concerne un procédé et un appareil d'indication d'informations, un dispositif et un support de stockage. Le procédé comprend les étapes suivantes : un dispositif de communication indique des premières informations au moyen d'une séquence et/ou d'un canal de commande et/ou d'un canal de données (910). Selon le procédé, des informations de communication telles que des informations de commande sont indiquées au moyen de la séquence et/ou du canal de commande et/ou du canal de données. Le procédé est adapté à différentes structures de trame, et la séquence et/ou les différents canaux de communication peuvent être utilisés de manière flexible de façon à indiquer efficacement des informations de communication.
PCT/CN2024/085189 2024-04-01 2024-04-01 Procédé et appareil d'indication d'informations, dispositif et support de stockage Pending WO2025208269A1 (fr)

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PCT/CN2024/085189 WO2025208269A1 (fr) 2024-04-01 2024-04-01 Procédé et appareil d'indication d'informations, dispositif et support de stockage

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