[go: up one dir, main page]

WO2025199766A1 - Dispositif et procédé de synchronisation - Google Patents

Dispositif et procédé de synchronisation

Info

Publication number
WO2025199766A1
WO2025199766A1 PCT/CN2024/083911 CN2024083911W WO2025199766A1 WO 2025199766 A1 WO2025199766 A1 WO 2025199766A1 CN 2024083911 W CN2024083911 W CN 2024083911W WO 2025199766 A1 WO2025199766 A1 WO 2025199766A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
scheduling information
time interval
time
terminal device
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/CN2024/083911
Other languages
English (en)
Chinese (zh)
Inventor
王昊
张世昌
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/CN2024/083911 priority Critical patent/WO2025199766A1/fr
Publication of WO2025199766A1 publication Critical patent/WO2025199766A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the chip includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned synchronization method.
  • An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the above-mentioned synchronization method.
  • An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the above-mentioned synchronization method.
  • Figure 1 is a schematic diagram of the environmental Internet of Things communication system structure.
  • FIG2 is a schematic diagram of a first topological structure according to an embodiment of the present application.
  • FIG3 is a schematic diagram of a second topological structure according to an embodiment of the present application.
  • FIG5 is a schematic diagram of a first device sending a first signal according to an embodiment of the present application.
  • FIG6 is a schematic diagram of a first device sending a first signal according to an embodiment of the present application.
  • FIG7 is a schematic diagram of Example 1 of the present application.
  • FIG8 is a schematic diagram of the second embodiment of the present application.
  • FIG9 is a schematic diagram of the third embodiment of the present application.
  • FIG10 is a schematic diagram of a fourth embodiment of the present application.
  • FIG14 is a schematic flowchart of a synchronization method 1400 according to an embodiment of the present application.
  • FIG18 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • D2D device-to-device
  • M2M machine-to-machine
  • MTC machine-type communication
  • V2V vehicle-to-vehicle
  • V2X vehicle-to-everything
  • the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.
  • CA carrier aggregation
  • DC dual connectivity
  • SA standalone
  • the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.
  • the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.
  • UE user equipment
  • a network device can provide services for a cell, and a terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources).
  • the cell can be a cell corresponding to a network device (for example, a base station).
  • 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.
  • the cellular Internet of Things is booming.
  • 3GPP 3rd Generation Partnership Project
  • IoT technologies such as Narrow Band Internet of Things (NB-IoT), Machine Type Communication (MTC), and Reduced Capability (RedCap).
  • NB-IoT Narrow Band Internet of Things
  • MTC Machine Type Communication
  • RedCap Reduced Capability
  • Object recognition such as logistics, production line product management, and supply chain management.
  • Environmental monitoring such as temperature, humidity, and harmful gas monitoring of working environment and natural environment.
  • Positioning such as indoor positioning, intelligent object search, and production line item positioning.
  • Intelligent control such as intelligent control of various electrical appliances in smart homes (turning on and off air conditioners, adjusting temperature), and intelligent control of various facilities in agricultural greenhouses (automatic irrigation and fertilization).
  • an A-IoT device can directly receive a carrier, data, or signal from a base station and send or backscatter data or a channel to the base station, as shown in the first topology (Topology 1) in Figure 2.
  • communication between an A-IoT device and a base station can be achieved through an intermediate node.
  • the intermediate node sends a carrier, data, or signal to the A-IoT device, and the A-IoT device sends or backscatters data or signals to the intermediate node, as shown in the second topology (Topology 2) in Figure 3.
  • the intermediate node can be a terminal device, a base station device, or an Integrated Access and Backhaul (IAB) node.
  • IAB Integrated Access and Backhaul
  • the ambient IoT may employ aperiodic synchronization signaling. Furthermore, since ambient IoT devices are passive, the transmission and reception of synchronization signals is constrained by low power consumption and low complexity.
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • FIG4 is a schematic flow chart of a synchronization method 400 according to an embodiment of the present application.
  • the method can optionally be applied to any of the systems shown in FIG1-3, but is not limited thereto.
  • the method includes at least part of the following contents.
  • the first device sends a first signal to the terminal device, where the first signal is used for time synchronization of the terminal device; wherein the interval between the first signal and the control and/or data information satisfies a first time interval, and the control and/or data information is sent after the first signal.
  • N may be associated with the first signal or a feature of the first signal.
  • FIG. 7 is a schematic diagram of the first embodiment of the present application.
  • the example shown in Figure 7 can be applied to the first topology (Topology 1).
  • the first device i.e., a network device, such as a base station
  • the terminal device is specifically an A-IoT device as an example.
  • the A-IoT device uses the first signal to complete time synchronization, and can then correctly receive subsequent information. Since the A-IoT device has a simple hardware structure and low processing power, a certain time interval needs to be reserved between the first signal and the subsequent transmission, i.e., the first time interval, for the A-IoT device to process the received first signal.
  • the standard may predefine a set of integer values, which includes one or more integer values, each of which may be associated with a first signal or certain characteristics of the first signal.
  • the characteristic of the first signal may be the length of a sequence.
  • an integer value N may be determined from the predefined set of integer values based on the first signal sent and a mapping rule (the preset rule is used to specify the association between the characteristics of the first signal and the first time interval); then the first device sends control and/or data information N time units after sending the first signal.
  • the mapping rule the preset rule is used to specify the association between the characteristics of the first signal and the first time interval
  • the first device sends control and/or data information N time units after sending the first signal.
  • the characteristics of the first signal are obtained; the first signal interval associated with the characteristics of the first signal is determined according to the mapping rule. If the integer value N is determined, the A-IoT device can determine the time domain position of the subsequent reception of the control/data information.
  • the A-IoT device when the A-IoT device detects the first signal, in addition to performing time synchronization according to the first signal, it can also determine the time domain position of subsequent received control/data according to the first time interval, thereby avoiding the A-IoT device being in an energy-consuming state of detecting signals all the time, and achieving energy-saving effects.
  • FIG 8 is a schematic diagram of the second embodiment of the present application.
  • the example shown in Figure 8 can be applied to the first topology (Topology 1).
  • the first device i.e., a network device, such as a base station
  • the terminal device is specifically an A-IoT device as an example.
  • the A-IoT device After the A-IoT device receives the first signal, it uses the first signal to complete time synchronization, and then it can correctly receive subsequent information. Between the first signal and the subsequent transmission A certain time interval needs to be reserved, that is, the first time interval, for the A-IoT device to process the received first signal.
  • the basic unit of the first time interval is a time unit, which can be an OFDM symbol, an OOK chip length, a time slot, a millisecond, etc.
  • the first time interval can be greater than or equal to N time units.
  • N is an integer and N ⁇ 0.
  • the value of N is predefined by the standard, or depends on the base station implementation, the A-IoT device terminal capabilities, or the type of A-IoT device.
  • the first device may also send a periodic synchronization signal (or referred to as a periodic signal).
  • a periodic signal or referred to as a periodic signal.
  • the first device sends the first signal while meeting the first time interval and can also ensure that the interval between the first signal and the periodic synchronization signal meets the second time interval.
  • the basic unit of the second time interval is a time unit, which can be an OFDM symbol, an OOK code chip length, a time slot, a millisecond, etc.
  • the second time interval can be greater than or equal to M time units, where M is an integer greater than or equal to 0.
  • the first device when the first device sends the first signal, the first device will only send the first signal when the time domain position of the first signal and the time interval between the most recent periodic synchronization signal are greater than or equal to M time units, and it is also necessary to ensure that the time interval between the first signal and the subsequently sent control and/or data information meets the first time interval.
  • the time interval between the first signal used to achieve synchronization and the periodic synchronization signal is prevented from being too short. This prevents frequent transmission of synchronization signals in a short period of time, saves energy consumption caused by the A-IoT device repeatedly detecting synchronization signals, and achieves energy conservation. Furthermore, after detecting the first signal, the A-IoT device can not only perform time synchronization based on the first signal, but also determine the time domain location of subsequent control/data reception based on the first time interval, thereby avoiding the A-IoT device being in an energy-consuming state of detecting signals, thereby achieving energy conservation.
  • Figure 9 is a schematic diagram of the third embodiment of the present application.
  • the example shown in Figure 9 can be applied to the first topology (Topology 1).
  • the first device i.e., a network device, such as a base station
  • the terminal device is specifically an A-IoT device as an example.
  • the A-IoT device uses the first signal to complete time synchronization, and can then correctly receive subsequent information. Since the A-IoT device has a simple hardware structure and low processing power, a certain time interval needs to be reserved between the first signal and the subsequent transmission, i.e., the first time interval, for the A-IoT device to process the received first signal.
  • the basic unit of the first time interval is a time unit, which can be an OFDM symbol, an OOK chip length, a time slot, a millisecond, etc.
  • the first time interval can be greater than or equal to N time units.
  • N is an integer and N ⁇ 0.
  • the value of N is predefined by the standard, or depends on the base station implementation, the A-IoT device terminal capabilities, or the type of A-IoT device.
  • the first signal may include one or more transmission opportunities, and different transmission opportunities represent different time domain positions.
  • the first signal includes X transmission opportunities, where X is a positive integer, and the specific value of X may be predefined by the standard.
  • the first device sends the first signal to meet the first time interval, that is, when sending the first signal, the first device must ensure that the time domain position of the last transmission opportunity and the interval between subsequent control and/or data transmission meet the first time interval; and, it also ensures that the interval between adjacent transmission opportunities of the first signal meets the third time interval.
  • the basic unit of the third time interval is a time unit, which may be an OFDM symbol, an OOK code chip length, a time slot, a millisecond, etc.
  • the third time interval is equal to K time units, where K is an integer greater than or equal to 0, and the specific value of K may be predefined by the standard.
  • the first signal includes multiple transmission opportunities, which are transmitted at multiple different time domain positions, which can reduce the situation where the A-IoT device misses the reception of the first signal due to the energy storage state.
  • the A-IoT device can not only receive the first signal for energy collection, but also use the subsequently repeatedly sent first signal to achieve time synchronization, thereby improving the success rate of synchronization.
  • the A-IoT device can not only perform time synchronization based on the first signal, but also determine the time domain position of the subsequent reception of control/data based on the first time interval, thereby avoiding the A-IoT device being in the energy consumption state of the detection signal all the time, and achieving the effect of energy saving.
  • the network device uses two different scheduling information to respectively schedule the first device to send the first signal and control and/or data information. For example, the network device sends scheduling information 1 and scheduling information 2 to the first device, wherein scheduling information 1 is used to schedule the first device to send the first signal and indicates relevant information of the first time interval, and scheduling information 2 is used to schedule the first device to send control and/or data information.
  • the first device receives scheduling information 1 and scheduling information 2, sends the first signal according to scheduling information 1, and determines the time domain position of the control and/or data information to be sent subsequently according to the relevant information of the first time interval indicated by scheduling information 1; the first device sends the control and/or data information at the time domain position according to scheduling signal 2.
  • the relevant information of the first time interval may be a specific time interval value determined by the network device based on the method in Embodiment 1 to Embodiment 4.
  • the information of the first time interval is specifically indicated by scheduling information
  • there may be two ways. One way is to use the time domain position where the scheduling information is sent as a reference point, then the value of the relevant information of the first time interval the first signal time domain offset + the first time interval.
  • the other way is to use the time domain position where the first signal is sent as a reference point, then the value of the relevant information of the first time interval is equal to the true value of the first time interval.
  • scheduling information 1 may not include information related to the first time interval.
  • the network device controls the time interval between the time of sending scheduling information 1 and the time of sending scheduling information 2 to control the first device to send control and/or data information after the first time interval after sending the first signal.
  • scheduling information 1 at least includes the first signal time domain offset, that is, the time domain offset between the time domain position of the scheduling information and the time domain position of the first signal.
  • the network device schedules the first device to transmit a first signal, which is used for time synchronization of the terminal device, and the interval between the first signal and the control and/or data information satisfies a first time interval.
  • the terminal device can achieve time synchronization by detecting the first signal. Furthermore, considering the extremely low power consumption and low complexity of the terminal device, by ensuring a transmission time interval between the first information and subsequently transmitted control and/or data information, a certain processing time can be given to the terminal device to complete the synchronization process.
  • the determination of N includes one or more of the following:
  • the N is associated with the first signal or a characteristic of the first signal.
  • the scheduling information includes one or more of the following:
  • the information related to the first time interval includes one or more of the following:
  • the first time interval The first time interval.
  • the scheduling information when the first signal includes multiple transmission opportunities, the scheduling information further includes one or more of the following:
  • the interval between adjacent transmission opportunities of the first signal is the interval between adjacent transmission opportunities of the first signal.
  • the scheduling information includes one or more of the following:
  • first scheduling information where the first scheduling information is used to schedule the first signal and/or indicate the first time interval
  • Second scheduling information where the second scheduling information is used to schedule the control and/or data information.
  • the scheduling information is carried in DCI.
  • the intermediate node comprises a terminal device.
  • the first signal comprises a non-periodic synchronization signal.
  • the terminal device includes an A-IoT device.
  • the specific manner in which the terminal device executes the synchronization method can be found in the relevant content of the terminal device in the aforementioned embodiment, and will not be described in detail.
  • FIG15 is a schematic block diagram of a first device 1500 according to an embodiment of the present application.
  • the first device 1500 may include:
  • the first transceiver unit 1510 is used to send a first signal to the terminal device, where the first signal is used for time synchronization of the terminal device; the interval between the first signal and the control and/or data information meets the first time interval, and the control and/or data information is sent after the first signal.
  • the determination of N includes one or more of the following:
  • the N is associated with the first signal or a characteristic of the first signal.
  • an interval between the first signal and the periodic synchronization signal satisfies a second time interval.
  • the second time interval is greater than or equal to M time units, where M is an integer greater than or equal to 0.
  • the first signal includes X transmission opportunities, where X is a positive integer.
  • an interval between adjacent transmission opportunities of the first signal satisfies a third time interval.
  • the third time interval is equal to K time units, where K is an integer greater than or equal to 0.
  • the first device includes a network device, or an intermediate node between the network device and the terminal device.
  • the first transceiver unit 1510 is further used to receive scheduling information from a network device, where the scheduling information is used to schedule the first device to send the first signal and/or schedule the first device to send the control and/or data information.
  • the terminal device includes an A-IoT device.
  • FIG17 is a schematic block diagram of a terminal device 1700 according to an embodiment of the present application.
  • the terminal device 1700 may include:
  • the terminal device further includes determining the first time interval, where the first time interval is greater than or equal to N time units, where N is an integer greater than or equal to 0.
  • the terminal device determines the first time interval using one or more of the following:
  • the type of the terminal device is the type of the terminal device
  • the first signal or a characteristic of the first signal is the first signal or a characteristic of the first signal.
  • the terminal device includes an A-IoT device.
  • the terminal device 1700 of the embodiment of the present application can implement the corresponding functions of the terminal device in the aforementioned method embodiment.
  • the processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the terminal device 1700 can be found in the corresponding descriptions in the above-mentioned method embodiments, which will not be repeated here.
  • the functions described by the various modules (sub-modules, units or components, etc.) in the terminal device 1700 of the embodiment of the application can be implemented by different modules (sub-modules, units or components, etc.) or by the same module (sub-module, unit or component, etc.).
  • the communication device 1800 may be a network device of an embodiment of the present application, and the communication device 1800 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.
  • the communication device 1800 may be the first device of the embodiment of the present application, and the communication device 1800 may implement the corresponding processes implemented by the first device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.
  • the communication device 1800 may be a terminal device of an embodiment of the present application, and the communication device 1800 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.
  • FIG19 is a schematic structural diagram of a chip 1900 according to an embodiment of the present application.
  • the chip 1900 includes a processor 1910. 1910 can call and run the computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 1900 may further include a memory 1920.
  • the processor 1910 may call and execute a computer program from the memory 1920 to implement the method executed by the first device, the network device, or the terminal device in the embodiment of the present application.
  • the memory 1920 may be a separate device independent of the processor 1910 , or may be integrated into the processor 1910 .
  • the chip 1900 may further include an input interface 1930.
  • the processor 1910 may control the input interface 1930 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

Landscapes

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

Abstract

La présente demande se rapporte à un procédé et à un dispositif de synchronisation. Le procédé comprend l'étape suivante : un premier dispositif envoie un premier signal à un dispositif terminal, le premier signal étant utilisé pour que le dispositif terminal réalise une synchronisation temporelle, l'intervalle entre le premier signal et des informations de commande et/ou de données satisfaisant un premier intervalle de temps, et les informations de commande et/ou de données étant envoyées après le premier signal. Au moyen des modes de réalisation de la présente demande, une synchronisation de dispositif dans l'Internet des Objets ambiant peut être obtenue.
PCT/CN2024/083911 2024-03-26 2024-03-26 Dispositif et procédé de synchronisation Pending WO2025199766A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/083911 WO2025199766A1 (fr) 2024-03-26 2024-03-26 Dispositif et procédé de synchronisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/083911 WO2025199766A1 (fr) 2024-03-26 2024-03-26 Dispositif et procédé de synchronisation

Publications (1)

Publication Number Publication Date
WO2025199766A1 true WO2025199766A1 (fr) 2025-10-02

Family

ID=97218007

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/083911 Pending WO2025199766A1 (fr) 2024-03-26 2024-03-26 Dispositif et procédé de synchronisation

Country Status (1)

Country Link
WO (1) WO2025199766A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230300849A1 (en) * 2016-05-27 2023-09-21 Cisco Technology, Inc. Control channel and data channel transmission/reception method and apparatus for nr system
CN117460059A (zh) * 2022-07-14 2024-01-26 华为技术有限公司 一种下行数据的控制信息的接收、发送方法及装置
WO2024050840A1 (fr) * 2022-09-09 2024-03-14 Oppo广东移动通信有限公司 Procédé de communication et appareil de communication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230300849A1 (en) * 2016-05-27 2023-09-21 Cisco Technology, Inc. Control channel and data channel transmission/reception method and apparatus for nr system
CN117460059A (zh) * 2022-07-14 2024-01-26 华为技术有限公司 一种下行数据的控制信息的接收、发送方法及装置
WO2024050840A1 (fr) * 2022-09-09 2024-03-14 Oppo广东移动通信有限公司 Procédé de communication et appareil de communication

Similar Documents

Publication Publication Date Title
WO2021057473A1 (fr) Procédé de planification de porteuse dans un réseau symbiotique, appareil, et support de stockage
US20220174602A1 (en) Data transmission method and apparatus
CN114902592A (zh) 传输初始接入配置信息的方法和装置
CN117812728A (zh) 一种上行唤醒的方法及装置
US20240389079A1 (en) Communication method and apparatus, computer-readable storage medium, computer program product, and chip
CN116548027A (zh) 无线通信的方法及设备
WO2024065267A1 (fr) Procédé et dispositif de communication sans fil
WO2023035144A1 (fr) Procédé de communication sans fil, dispositif terminal et dispositif de réseau
WO2022099711A1 (fr) Procédé de traitement d'informations, dispositif terminal, dispositif électronique et système de traitement d'informations
WO2024164168A1 (fr) Procédé de communication sans fil et dispositif
US20250267732A1 (en) Communication method, and device
WO2023173379A1 (fr) Procédés de transmission de données, premier dispositif et second dispositif
US20250097846A1 (en) Communication method and communication apparatus
WO2024239666A1 (fr) Transmission d'ondes porteuses
WO2025199766A1 (fr) Dispositif et procédé de synchronisation
US20250008561A1 (en) Data transmission method, first device, and second device
WO2025138137A1 (fr) Procédé de communication basé sur l'internet des objets environnemental, système de communication et support de stockage
US20250261112A1 (en) Information transmission method and apparatus
US20250365713A1 (en) Channel preemption methods and apparatuses, and communication device
US20250202672A1 (en) Communication method and apparatus
WO2024239726A1 (fr) Accès aléatoire pour dispositifs
WO2025118159A1 (fr) Procédé de traitement de signal, premier dispositif et second dispositif
WO2025118160A1 (fr) Procédé d'accès, premier dispositif et second dispositif
WO2025199879A1 (fr) Procédé et dispositif de transmission d'informations
WO2025156118A1 (fr) Procédé de communication basé sur l'internet des objets ambiant (ido-a), système de communication et support de stockage

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24931569

Country of ref document: EP

Kind code of ref document: A1