WO2023050393A1 - 一种随机接入响应窗口的确定方法及其装置 - Google Patents

一种随机接入响应窗口的确定方法及其装置 Download PDF

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Publication number
WO2023050393A1
WO2023050393A1 PCT/CN2021/122387 CN2021122387W WO2023050393A1 WO 2023050393 A1 WO2023050393 A1 WO 2023050393A1 CN 2021122387 W CN2021122387 W CN 2021122387W WO 2023050393 A1 WO2023050393 A1 WO 2023050393A1
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Prior art keywords
random access
access response
response window
rtt
nprach
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PCT/CN2021/122387
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English (en)
French (fr)
Inventor
朱亚军
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北京小米移动软件有限公司
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Priority to CN202180002915.4A priority Critical patent/CN116210332A/zh
Priority to PCT/CN2021/122387 priority patent/WO2023050393A1/zh
Publication of WO2023050393A1 publication Critical patent/WO2023050393A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present application relates to the field of communication technologies, and in particular to a method and device for determining a random access response window.
  • Satellite communication is considered to be an important aspect of future wireless communication technology development. Satellite communication refers to the communication carried out by radio communication equipment on the ground using satellites as relays.
  • the satellite communication system consists of a satellite part and a ground part.
  • the characteristics of satellite communication are: the communication range is large; as long as it is within the range covered by the radio waves emitted by the satellite, communication can be carried out from any two points; it is not easily affected by land disasters (high reliability).
  • Embodiments of the present application provide a method and device for determining a random access response window, which can be applied to a long term evolution (long term evolution, LTE) system, a fifth generation (5th generation, 5G) mobile communication system, and a 5G new air interface ( new radio (NR) system, or other future new mobile communication systems and other communication systems, the number of repeated transmissions and round-trip time (Round-Trip Time, RTT) through the narrowband Physical Random Access Channel (Narrowband Physical Random Access Channel, NPRACH) Determining the opening position of the random access response window can avoid unnecessary additional time delay, thereby helping to reduce detection overhead and avoid resource waste.
  • LTE long term evolution
  • 5G fifth generation
  • NR new radio
  • the embodiment of the present application provides a method for determining a random access response window, the method including:
  • the open position of the random access response window can be determined by the number of repeated transmissions of the NPRACH and the RTT. In this way, unnecessary additional time delay can be avoided, thereby helping to reduce the detection overhead , to avoid wasting resources.
  • the determining the opening position of the random access response window includes:
  • An open position of a random access response window is determined according to the RTT, wherein the number of repeated transmissions of the NPRACH is smaller than a preset threshold.
  • the determining the opening position of the random access response window includes:
  • An open position of a random access response window is determined according to the RTT and the preset value, wherein the number of repeated transmissions of the NPRACH is greater than or equal to the preset threshold.
  • the opening position of the random access response window is: subframe n+RTT, where n is an integer.
  • the opening position of the random access response window is: subframe n+max ⁇ RTT, preset value ⁇ , where n is an integer.
  • the open position of the random access response window can be determined by the number of repeated transmissions of the NPRACH, the preset value, and the RTT. In this way, unnecessary additional time delay can be avoided, thereby effectively It is beneficial to reduce detection overhead and avoid waste of resources.
  • the last subframe containing the repeated transmission of the NPRACH is subframe n.
  • the first device is a terminal device
  • the second device is a network device.
  • the first device is a network device
  • the second device is a terminal device.
  • the embodiment of this application provides a communication device, which has part or all of the functions of the terminal device in the method described in the first aspect above, for example, the communication device may have part or all of the functions in this application
  • the functions in the embodiments may also have the functions of independently implementing any one of the embodiments in the present application.
  • the functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the structure of the communication device may include a transceiver module and a processing module, and the processing module is configured to support the communication device to perform corresponding functions in the foregoing method.
  • the transceiver module is used to support communication between the communication device and other equipment.
  • the communication device may further include a storage module, which is used to be coupled with the transceiver module and the processing module, and stores necessary computer programs and data of the communication device.
  • the processing module may be a processor
  • the transceiver module may be a transceiver or a communication interface
  • the storage module may be a memory.
  • the communication device includes:
  • a transceiver module configured to obtain the number of repeated transmissions of the narrowband physical random access channel NPRACH;
  • the transceiver module is further configured to obtain a round-trip time RTT between the apparatus and the second device;
  • a processing module configured to determine the opening position of the random access response window.
  • the processing module is further configured to determine an opening position of a random access response window according to the RTT, wherein the number of repeated transmissions of the NPRACH is less than a preset threshold.
  • processing module is also used for:
  • An open position of a random access response window is determined according to the RTT and the preset value, wherein the number of repeated transmissions of the NPRACH is greater than or equal to the preset threshold.
  • the open position of the random access response window is: subframe n+RTT, where n is an integer.
  • the opening position of the random access response window is: subframe n+max ⁇ RTT, preset value ⁇ , where n is an integer.
  • the last subframe containing the repeated transmission of the NPRACH is subframe n.
  • the device is a terminal device, and the second device is a network device.
  • the device is a network device, and the second device is a terminal device.
  • the embodiment of the present application provides a communication device, the communication device includes a processor and a memory, the memory stores a computer program; the processor executes the computer program stored in the memory, so that the communication device performs The method described in the first aspect above.
  • the embodiment of the present application provides a communication device, the device includes a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to make the The device executes the method described in the first aspect above.
  • the embodiment of the present application provides a system for determining a random access response window, the system includes the communication device described in the second aspect, or the system includes the communication device described in the third aspect, or the system It includes the communication device described in the fourth aspect, or the system includes the communication device described in the fifth aspect.
  • the embodiment of the present invention provides a computer-readable storage medium, which is used to store instructions used by the above-mentioned terminal equipment, and when the instructions are executed, the terminal equipment executes the method described in the above-mentioned first aspect .
  • the present application further provides a computer program product including a computer program, which, when run on a computer, causes the computer to execute the method described in the first aspect above.
  • the present application provides a chip system
  • the chip system includes at least one processor and an interface, used to support the terminal device to implement the functions involved in the first aspect, for example, determine or process the data and at least one of the information.
  • the chip system further includes a memory, and the memory is configured to store necessary computer programs and data of the terminal device.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • the present application provides a computer program that, when run on a computer, causes the computer to execute the method described in the first aspect above.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a base station side uplink and downlink timing alignment provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of misalignment of uplink and downlink timing on the base station side provided by an embodiment of the present application;
  • FIG. 4 is a schematic flowchart of a method for determining a random access response window provided in an embodiment of the present application
  • FIG. 5 is a schematic flowchart of a method for determining a random access response window provided in an embodiment of the present application
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a chip provided by an embodiment of the present application.
  • NTN Non-terrestrial Network
  • NTN adopts typical technologies such as satellite satellites and high-altitude platforms (High-Altitude Platformstation, HAPS) to participate in network deployment.
  • HAPS High-Altitude Platformstation
  • GEO Geostationary Earth Orbiting
  • PRACH Physical Random Access Channel
  • the PRACH is a channel for a terminal device to initiate uplink system access, and the terminal device will initiate a random access process on the PRACH channel independently or based on the instruction of the base station eNodeB.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • the communication system may include, but is not limited to, a network device and a terminal device.
  • the number and form of the devices shown in Figure 1 are for example only and do not constitute a limitation to the embodiment of the application. In practical applications, two or more network equipment, two or more terminal equipment.
  • the communication system shown in FIG. 1 includes one network device 101 and one terminal device 102 as an example.
  • LTE long term evolution
  • 5th generation 5th generation
  • 5G new radio new radio, NR
  • side link in this embodiment of the present application may also be referred to as a side link or a through link.
  • the network device 101 in this embodiment of the present application is an entity of a network for transmitting or receiving signals.
  • the network device 101 may be an evolved base station (evolved NodeB, eNB), a transmission point (transmission reception point, TRP), a next generation base station (next generation NodeB, gNB) in an NR system, or a base station in other future mobile communication systems Or an access node in a wireless fidelity (wireless fidelity, WiFi) system, etc.
  • eNB evolved NodeB
  • TRP transmission reception point
  • gNB next generation base station
  • gNB next generation NodeB
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.
  • the network device provided by the embodiment of the present application may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit), using CU-DU
  • the structure of the network device such as the protocol layer of the base station, can be separated, and the functions of some protocol layers are placed in the centralized control of the CU, and the remaining part or all of the functions of the protocol layer are distributed in the DU, and the CU centrally controls the DU.
  • the terminal device 102 in the embodiment of the present application is an entity on the user side for receiving or transmitting signals, such as a mobile phone.
  • the terminal equipment may also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal equipment (mobile terminal, MT) and so on.
  • the terminal device can be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control (industrial control), wireless terminal equipment in self-driving (self-driving), wireless terminal equipment in remote medical surgery (remote medical surgery), smart grid ( Wireless terminal devices in smart grid, wireless terminal devices in transportation safety, wireless terminal devices in smart city, wireless terminal devices in smart home, etc.
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.
  • eMBB Enhanced Mobile Broadband
  • URLLC Latency Communication
  • mMTC massive Machine Type Communication
  • Satellite communication refers to the communication carried out by radio communication equipment on the ground using satellites as relays.
  • the satellite communication system consists of a satellite part and a ground part.
  • the characteristics of satellite communication are: the communication range is large; as long as it is within the range covered by the radio waves emitted by the satellite, communication can be carried out from any two points; it is not easily affected by land disasters (high reliability).
  • satellite communication can have the following benefits:
  • Extended coverage For areas where the current cellular communication system cannot cover or has high coverage costs, such as oceans, deserts, and remote mountainous areas, satellite communications can be used to solve communication problems.
  • FIG. 2 is a schematic diagram of a base station side uplink and downlink timing alignment provided by an embodiment of the present application.
  • eNBDL is the base station side downlink communication
  • eNBUL is the base station side uplink communication
  • UEDL is the terminal side downlink communication
  • UEUL is the terminal side uplink communication
  • n is a reference subframe.
  • the reference point is located in the base station.
  • the terminal equipment needs to detect signals in advance, even if the reference point in UEUL is advanced, and Delay in the figure is the transmission delay, that is The time it takes for a signal to propagate in the terminal equipment and base station.
  • TA Timing Advance
  • Fig. 3 is a schematic diagram of misalignment of uplink and downlink timing on the base station side provided by an embodiment of the present application.
  • eNBDL refers to downlink communication on the base station side
  • eNBUL refers to uplink communication on the base station side
  • UEDL refers to downlink communication on the terminal side
  • UEUL refers to uplink communication on the terminal side
  • n is a reference point.
  • the reference point is not located in the base station.
  • the terminal equipment needs to detect signals in advance, even if the reference point in UEUL is advanced, Delay in the figure is the transmission delay.
  • n in the UEUL earlier than n in the UEUL by an amount of one TA. That is, make the reference point n in eNBDL and the reference point in eNBUL be in the same subframe.
  • the Koffset can be applied in various operations, such as: DCI-scheduled PUSCH transmission; HARQ feedback information transmission and MAC CE transmission, etc.
  • delay compensation can also be performed through the round-trip time (Round-Trip Time, RTT) between the terminal device and the network device UE-eNB to compensate the propagation delay from the terminal to the base station.
  • RTT Round-Trip Time
  • the range of the timing relationship used in different scenarios may be different, depending on the orbit information of the satellite and the position information of the reference point. Timing relationships may be in the range [0ms,560ms].
  • the terminal when the terminal sends the NPRACH sequence, the terminal opens the random response receiving window RA Response window to determine the time position as follows:
  • the starting position of the RA Response window is from the last subframe n+UE-eNB RTT+41ms containing the repeated transmission of the preamble preamble;
  • the starting position of the RA Response window is from the last subframe n+UE-eNB RTT+4ms containing the repeated transmission of the preamble preamble;.
  • FIG. 4 is a schematic flowchart of a method for determining a random access response window provided by an embodiment of the present application. Can be applied to terminal equipment. As shown in Figure 4, the method may include but not limited to the following steps:
  • Step S401 Obtain the number of repeated transmissions of the narrowband physical random access channel NPRACH.
  • the terminal device has a Global Navigation Satellite System (Global Navigation Satellite System, GNSS) positioning capability, and can determine the position of the satellite through the ephemeris.
  • GNSS Global Navigation Satellite System
  • the terminal device sends the NPRACH, it can automatically estimate the time advance amount TA, and perform pre-compensation in advance to determine the opening position of the RA Response window, specifically to determine the opening of the random response receiving window RA Response window according to the number of repeated transmissions of the NPRACH Location.
  • the NPRACH channel can obtain coverage enhancement through repeated propagation, and the number of repetitions can be ⁇ 1, 2, 4, 8, 16, 32, 64, 128 ⁇ .
  • the NPRACH cannot occupy the first three OFDM symbols of the 0th subframe for repeated transmission.
  • the method for obtaining the opening position of the random access response window may be determined according to the number of repeated transmissions of the NPRACH, and the corresponding determination method is different when the number of repeated transmissions is greater than a preset threshold and when the number of repeated transmissions is greater than a preset threshold.
  • Step S402 Obtain the round-trip time RTT between the first device and the second device.
  • the NTN has the advantages of wide coverage and simple networking. However, limited by the large orbital height (35786km), the satellite signal propagation delay is large, and the real-time service experience is poor. In order to compensate for the transmission delay, it is also necessary to determine the opening position of the RA Response window according to the transmission time of the satellite signal between the first device and the second device, that is, RTT.
  • the first device is a terminal device
  • the second device is a network device.
  • the first device is a network device
  • the second device is a terminal device.
  • Step S403 Determine the opening position of the random access response window.
  • the opening position of the random access response window can be determined.
  • the open position of the random access response window can be determined by the number of repeated transmissions of the NPRACH and the RTT. In this way, unnecessary additional time delay can be avoided, thereby helping to reduce the detection overhead , to avoid wasting resources.
  • the determining the opening position of the random access response window includes:
  • An open position of a random access response window is determined according to the RTT, wherein the number of repeated transmissions of the NPRACH is smaller than a preset threshold.
  • the NPRACH channel in order to expand the coverage of the signal, can obtain coverage enhancement through repeated propagation, and the number of repetitions can be ⁇ 1, 2, 4, 8, 16, 32, 64, 128 ⁇ .
  • the preset threshold is set to obtain a method for determining the open position of the random access response window according to the repeated transmission times of the NPRACH. If the number of repeated transmissions of the NPRACH is less than the preset threshold, the opening position of the random access response window may be determined according to the RTT. In a possible embodiment, the preset threshold is 64, and when the number of repeated transmissions of the NPRACH is less than 64, the opening position of the random access response window can be determined according to the RTT.
  • FIG. 5 is a schematic flowchart of a method for determining a random access response window provided in an embodiment of the present application. Can be applied to network equipment. As shown in Figure 5, the method may include but not limited to the following steps:
  • Step S501 Obtain a preset value.
  • the preset value is used to adjust the opening position of the random access response window, the preset value is a fixed time deviation, and the random access window can be determined more accurately according to the preset value.
  • Step S502 Determine the opening position of the random access response window according to the RTT and the preset value, wherein the number of repeated transmissions of the NPRACH is greater than or equal to the preset threshold.
  • the NPRACH channel in order to expand the coverage of the signal, can obtain coverage enhancement through repeated propagation, and the number of repetitions can be ⁇ 1, 2, 4, 8, 16, 32, 64, 128 ⁇ .
  • the preset threshold is set to obtain a method for determining the open position of the random access response window according to the repeated transmission times of the NPRACH. If the number of repeated transmissions of the NPRACH is greater than or equal to the preset threshold, the opening position of the random access response window may be determined according to the RTT and the preset value. In a possible embodiment, the preset threshold is 64, and when the number of repeated transmissions of the NPRACH is greater than or equal to 64, the opening position of the random access response window can be determined according to the RTT and the preset value .
  • the open position of the random access response window can be determined by the number of repeated transmissions of the NPRACH, the preset value, and the RTT. In this way, unnecessary additional time delay can be avoided, thereby effectively It is beneficial to reduce detection overhead and avoid waste of resources.
  • the open position of the random access response window is: subframe n+RTT, where n is an integer.
  • the opening position of the random access response window needs to be determined according to the RTT.
  • the preset threshold is 64
  • the number of repeated transmissions of the NPRACH is 32
  • the RTT is 200ms
  • the last subframe containing the repeated transmission of the NPRACH is subframe number 7, Then the open position of the random access response window is subframe 7+200ms.
  • the opening position of the random access response window is: subframe n+max ⁇ RTT, preset value ⁇ , where n is an integer.
  • the preset threshold is 64
  • the number of repeated transmissions of the NPRACH is 128, the RTT is 200ms, the preset value is 41ms, and the last subframe containing the repeated transmission of the NPRACH If the subframe number is 6, then the open position of the random access response window is subframe 6+200ms.
  • the preset threshold is 64
  • the number of repeated transmissions of the NPRACH is 128, the RTT is 33ms, the preset value is 41ms, and the last subsection containing the repeated transmission of the NPRACH If the frame is subframe number 6, then the open position of the random access response window is subframe 6+41ms.
  • the last subframe containing the repeated transmission of the NPRACH is subframe n.
  • the first device is a terminal device
  • the second device is a network device.
  • the first device is a network device
  • the second device is a terminal device.
  • the second device is a network device; if the first device is a network device, then the second device is a terminal device.
  • the methods provided in the embodiments of the present application are introduced from the perspectives of the network device and the terminal device respectively.
  • the network device and the terminal device may include a hardware structure and a software module, and realize the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • a certain function among the above-mentioned functions may be implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • FIG. 6 is a schematic structural diagram of a communication device 60 provided in an embodiment of the present application.
  • the communication device 60 shown in FIG. 6 may include a transceiver module 601 and a processing module 602 .
  • the transceiver module 601 may include a sending module and/or a receiving module, the sending module is used to realize the sending function, the receiving module is used to realize the receiving function, and the sending and receiving module 601 can realize the sending function and/or the receiving function.
  • the communication device 60 may be a terminal device (such as the terminal device in the foregoing method embodiments), may also be a device in the terminal device, and may also be a device that can be matched with the terminal device.
  • the communication device 60 may be a network device, or a device in the network device, or a device that can be matched with the network device.
  • the communication device 60 is a terminal device, including:
  • a transceiver module configured to obtain the number of repeated transmissions of the narrowband physical random access channel NPRACH;
  • the transceiver module is further configured to obtain a round-trip time RTT between the apparatus and the second device;
  • a processing module configured to determine the opening position of the random access response window.
  • the processing module is further configured to determine an opening position of a random access response window according to the RTT, wherein the number of repeated transmissions of the NPRACH is less than a preset threshold.
  • processing module is also used for:
  • An open position of a random access response window is determined according to the RTT and the preset value, where the number of repeated transmissions of the NPRACH is greater than or equal to the preset threshold.
  • the open position of the random access response window is: subframe n+RTT, where n is an integer.
  • the opening position of the random access response window is: subframe n+max ⁇ RTT, preset value ⁇ , where n is an integer.
  • the last subframe containing the repeated transmission of the NPRACH is subframe n.
  • the device is a terminal device, and the second device is a network device.
  • the device is a network device, and the second device is a terminal device.
  • FIG. 7 is a schematic structural diagram of another communication device 70 provided in an embodiment of the present application.
  • the communication device 70 may be a network device, or a terminal device (such as the terminal device in the foregoing method embodiments), or a chip, a chip system, or a processor that supports the network device to implement the above method, or it may also be a support terminal
  • a device is a chip, a chip system, or a processor that implements the above method.
  • the device can be used to implement the methods described in the above method embodiments, and for details, refer to the descriptions in the above method embodiments.
  • Communications device 70 may include one or more processors 701 .
  • the processor 701 may be a general-purpose processor or a special-purpose processor or the like. For example, it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs , to process data for computer programs.
  • the communication device 70 may further include one or more memories 702, on which a computer program 703 may be stored, and the processor 701 executes the computer program 703, so that the communication device 70 executes the method described in the foregoing method embodiments. method.
  • data may also be stored in the memory 702 .
  • the communication device 70 and the memory 702 can be set separately or integrated together.
  • the communication device 70 may further include a transceiver 704 and an antenna 705 .
  • the transceiver 704 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function.
  • the transceiver 704 may include a receiver and a transmitter, and the receiver may be called a receiver or a receiving circuit for realizing a receiving function; the transmitter may be called a transmitter or a sending circuit for realizing a sending function.
  • the communication device 70 may further include one or more interface circuits 706 .
  • the interface circuit 706 is used to receive code instructions and transmit them to the processor 701 .
  • the processor 701 executes the code instructions to enable the communication device 70 to execute the methods described in the foregoing method embodiments.
  • the communication device 70 is a terminal device (such as the terminal device in the foregoing method embodiments): the processor 701 is configured to execute step S403 in FIG. 4 .
  • the transceiver 704 is used to execute steps S401 and S402 in FIG. 4 .
  • the communication device 70 is a network device: the processor 701 is configured to execute step S403 in FIG. 4 .
  • the transceiver 704 is used to execute steps S401 and S402 in FIG. 4 .
  • the processor 701 may include a transceiver for implementing receiving and sending functions.
  • the transceiver may be a transceiver circuit, or an interface, or an interface circuit.
  • the transceiver circuits, interfaces or interface circuits for realizing the functions of receiving and sending can be separated or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit may be used for signal transmission or transmission.
  • the processor 701 may store a computer program 703 , and the computer program 703 runs on the processor 701 to enable the communication device 70 to execute the methods described in the foregoing method embodiments.
  • the computer program 703 may be solidified in the processor 701, and in this case, the processor 701 may be implemented by hardware.
  • the communication device 70 may include a circuit, and the circuit may implement the function of sending or receiving or communicating in the foregoing method embodiments.
  • the processors and transceivers described in this application can be implemented in integrated circuits (integrated circuits, ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board, PCB), electronic equipment, etc.
  • the processor and transceiver can also be fabricated using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the communication device described in the above embodiments may be a network device or a terminal device (such as the terminal device in the aforementioned method embodiments), but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be affected by Figure 7 Limitations.
  • a communication device may be a stand-alone device or may be part of a larger device.
  • the communication device may be:
  • a set of one or more ICs may also include storage components for storing data and computer programs;
  • ASIC such as modem (Modem);
  • the communication device may be a chip or a chip system
  • the chip shown in FIG. 8 includes a processor 801 and an interface 802 .
  • the number of processors 801 may be one or more, and the number of interfaces 802 may be more than one.
  • the chip further includes a memory 803 for storing necessary computer programs and data.
  • the embodiment of the present application also provides a system for determining a random access response window, the system includes a communication device as a terminal device (such as the terminal device in the foregoing method embodiment) and a communication device as a network device in the aforementioned embodiment of Figure 6 Alternatively, the system includes a communication device serving as a terminal device (such as the terminal device in the foregoing method embodiment) and a communication device serving as a network device in the foregoing embodiment in FIG. 7 .
  • the present application also provides a readable storage medium on which instructions are stored, and when the instructions are executed by a computer, the functions of any one of the above method embodiments are realized.
  • the present application also provides a computer program product, which implements the functions of any one of the above method embodiments when executed by a computer.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product comprises one or more computer programs. When the computer program is loaded and executed on the computer, all or part of the processes or functions according to the embodiments of the present application will be generated.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer program can be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program can be downloaded from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disk, SSD)) etc.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a high-density digital video disc (digital video disc, DVD)
  • a semiconductor medium for example, a solid state disk (solid state disk, SSD)
  • At least one in this application can also be described as one or more, and multiple can be two, three, four or more, and this application does not make a limitation.
  • the technical feature is distinguished by "first”, “second”, “third”, “A”, “B”, “C” and “D”, etc.
  • the technical features described in the “first”, “second”, “third”, “A”, “B”, “C” and “D” have no sequence or order of magnitude among the technical features described.
  • the corresponding relationships shown in the tables in this application can be configured or predefined.
  • the values of the information in each table are just examples, and may be configured as other values, which are not limited in this application.
  • the corresponding relationship shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, for example, splitting, merging, and so on.
  • the names of the parameters shown in the titles of the above tables may also adopt other names understandable by the communication device, and the values or representations of the parameters may also be other values or representations understandable by the communication device.
  • other data structures can also be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables can be used wait.
  • Predefined in this application can be understood as defining, predefining, storing, prestoring, prenegotiating, preconfiguring, curing, or prefiring.

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Abstract

本申请实施例公开了一种随机接入响应窗口的确定方法及其装置，可以应用于长期演进(long term evolution，LTE)系统、第五代(5th generation，5G)移动通信系统、5G新空口(new radio，NR)系统，或者其他未来的新型移动通信系统等通信系统，该方法包括：获取窄带物理随机接入信道NPRACH的重复传输次数；获取第一设备和第二设备之间的往返时间RTT；确定随机接入响应窗口的开启位置。通过实施本申请实施例，可以通过所述NPRACH的重复传输次数和所述RTT确定随机接入响应窗口的开启位置，通过这种方式，可以避免不必要的额外时延，从而有利于降低检测开销，避免资源浪费。

Description

一种随机接入响应窗口的确定方法及其装置 技术领域
本申请涉及通信技术领域，尤其涉及一种随机接入响应窗口的确定方法及其装置。
背景技术
卫星通信被认为是未来无线通信技术发展的一个重要方面。卫星通信是指地面上的无线电通信设备利用卫星作为中继而进行的通信。卫星通信系统由卫星部分和地面部分组成。卫星通信的特点是：通信范围大；只要在卫星发射的电波所覆盖的范围内，从任何两点之间都可进行通信；不易受陆地灾害的影响(可靠性高)。
在卫星通信中，由于终端设备与网络设备存在较长的信号传输距离，导致数据传输有较大的时间。对于存在有上下行关系的传输，通过引入定时偏移量Koffset来补偿传输时延。确定准确的随机接入响应窗口RA Response window，但不同的场景下传输需求的时延需求不同，可能会导致不必要的额外时延，提高检测的开销，造成资源的浪费。
发明内容
本申请实施例提供一种随机接入响应窗口的确定方法及其装置，可以应用于长期演进(long term evolution，LTE)系统、第五代(5th generation，5G)移动通信系统、5G新空口(new radio，NR)系统，或者其他未来的新型移动通信系统等通信系统，通过窄带物理随机接入信道(Narrowband Physical Random Access Channel，NPRACH)的重复传输次数和往返时间(Round-Trip Time，RTT)确定随机接入响应窗口的开启位置，可以避免不必要的额外时延，从而有利于降低检测开销，避免资源浪费。
第一方面，本申请实施例提供一种随机接入响应窗口的确定方法，该方法包括：
获取窄带物理随机接入信道NPRACH的重复传输次数；
获取第一设备和第二设备之间的往返时间RTT；
确定随机接入响应窗口的开启位置。
通过实施本申请实施例，可以通过所述NPRACH的重复传输次数和所述RTT确定随机接入响应窗口的开启位置，通过这种方式，可以避免不必要的额外时延，从而有利于降低检测开销，避免资源浪费。
可选的，所述确定随机接入响应窗口的开启位置，包括：
根据所述RTT确定随机接入响应窗口的开启位置，其中，所述NPRACH的重复传输次数小于预设阈值。
可选的，所述确定随机接入响应窗口的开启位置，包括：
获取预设值；
根据所述RTT和所述预设值确定随机接入响应窗口的开启位置，其中，所述NPRACH的重复传输次数大于或等于所述预设阈值。
可选的，所述随机接入响应窗口的开启位置为：子帧n+RTT，n为整数。
可选的，所述随机接入响应窗口的开启位置为：子帧n+max{RTT，预设值}，n为整数。
通过实施本申请实施例，可以通过所述NPRACH的重复传输次数、预设值和所述RTT确定随机接入响应窗口的开启位置，通过这种方式，可以避免不必要的额外时延，从而有利于降低检测开销，避免资源浪费。
可选的，所述最后一个包含所述NPRACH重复传输的子帧为子帧n。
可选的，所述第一设备为终端设备，所述第二设备为网络设备。
可选的，所述第一设备为网络设备，所述第二设备为终端设备。
第二方面，本申请实施例提供一种通信装置，该通信装置具有实现上述第一方面所述的方法中终端设备的部分或全部功能，比如通信装置的功能可具备本申请中的部分或全部实施例中的功能，也可以具备单独实施本申请中的任一个实施例的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种实现方式中，该通信装置的结构中可包括收发模块和处理模块，所述处理模块被配置为支持通信装置执行上述方法中相应的功能。所述收发模块用于支持通信装置与其他设备之间的通信。所述通信装置还可以包括存储模块，所述存储模块用于与收发模块和处理模块耦合，其保存通信装置必要的计算机程序和数据。
作为示例，处理模块可以为处理器，收发模块可以为收发器或通信接口，存储模块可以为存储器。在一种实现方式中，所述通信装置包括：
收发模块，用于获取窄带物理随机接入信道NPRACH的重复传输次数；
所述收发模块，还用于获取所述装置和第二设备之间的往返时间RTT；
处理模块，用于确定随机接入响应窗口的开启位置。
可选的，所述处理模块，还用于根据所述RTT确定随机接入响应窗口的开启位置，其中，所述NPRACH的重复传输次数小于预设阈值。
可选的，所述处理模块，还用于：
获取预设值；
根据所述RTT和所述预设值确定随机接入响应窗口的开启位置，其中，所述NPRACH的重复传输次数大于或等于所述预设阈值。
可选的，所述随机接入响应窗口的开启位置为：子帧n+RTT，n为整数。
可选的，所述随机接入响应窗口的开启位置为：子帧n+max{RTT，预设值}，n为整数。
可选的，最后一个包含所述NPRACH重复传输的子帧为子帧n。
可选的，所述装置为终端设备，所述第二设备为网络设备。
可选的，所述装置为网络设备，所述第二设备为终端设备。
第四方面，本申请实施例提供一种通信装置，该通信装置包括处理器和存储器，该存储器中存储有计算机程序；所述处理器执行该存储器所存储的计算机程序，以使该通信装置执行上述第一方面所述的方法。
第五方面，本申请实施例提供一种通信装置，该装置包括处理器和接口电路，该接口电路用于接收代码指令并传输至该处理器，该处理器用于运行所述代码指令以使该装置执行上述第一方面所述的方法。
第六方面，本申请实施例提供一种随机接入响应窗口的确定系统，该系统包括第二方面所述的通信装置，或者，该系统包括第三方面所述的通信装置，或者，该系统包括第四方面所述的通信装置，或者，该系统包括第五方面所述的通信装置。
第七方面，本发明实施例提供一种计算机可读存储介质，用于储存为上述终端设备所用的指令，当所述指令被执行时，使所述终端设备执行上述第一方面所述的方法。
第八方面，本申请还提供一种包括计算机程序的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面所述的方法。
第九方面，本申请提供一种芯片系统，该芯片系统包括至少一个处理器和接口，用于支持终端设备实现第一方面所涉及的功能，例如，确定或处理上述方法中所涉及的数据和信息中的至少一种。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存终端设备必要的计算机程序和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
第十方面，本申请提供一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面所述的方法。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1是本申请实施例提供的一种通信系统的架构示意图；
图2是本申请实施例提供的一种基站侧上下行定时对齐的示意图；
图3是本申请实施例提供的一种基站侧上下行定时不对齐的示意图；
图4是本申请实施例提供的一种随机接入响应窗口的确定方法的流程示意图；
图5是本申请实施例提供的一种随机接入响应窗口的确定方法的流程示意图；
图6是本申请实施例提供的一种通信装置的结构示意图；
图7是本申请实施例提供的另一种通信装置的结构示意图；
图8是本申请实施例提供的一种芯片的结构示意图。
具体实施方式
为了便于理解，首先介绍本申请涉及的术语。
1、非地面网络(Non-terrestrial Network，NTN)
NTN是相对于传统的地面网络而言，采用典型的如卫星satellites和高空平台(High-Altitude Platformstation，HAPS)参与布网的技术。以卫星通信为例，同步轨道卫星(Geostationary Earth Orbiting，GEO)理论上只需要3颗即可覆盖除两极地区外的全球范围，可以以较低的成本实现了较大的覆盖范围。
2、物理随机接入信道(Physical Random Access Channel，PRACH)
PRACH是终端设备发起上行系统接入的信道，终端设备会自主发起或是基于基站eNodeB的指示在PRACH信道上发起随机接入过程。
为了更好的理解本申请实施例公开的一种随机接入响应窗口的确定方法，下面首先对本申请实施例适用的通信系统进行描述。
请参见图1，图1为本申请实施例提供的一种通信系统的架构示意图。该通信系统可包括但不限于一个网络设备和一个终端设备，图1所示的设备数量和形态仅用于举例并不构成对本申请实施例的限定，实际应用中可以包括两个或两个以上的网络设备，两个或两个以上的终端设备。图1所示的通信系统以包括一个网络设备101和一个终端设备102为例。
需要说明的是，本申请实施例的技术方案可以应用于各种通信系统。例如：长期演进(long term evolution，LTE)系统、第五代(5th generation，5G)移动通信系统、5G新空口(new radio，NR)系统，或者其他未来的新型移动通信系统等。还需要说明的是，本申请实施例中的侧链路还可以称为侧行链路或直通链路。
本申请实施例中的网络设备101是网络的一种用于发射或接收信号的实体。例如，网络设备101可以为演进型基站(evolved NodeB，eNB)、传输点(transmission reception point，TRP)、NR系统中的下一代基站(next generation NodeB，gNB)、其他未来移动通信系统中的基站或无线保真(wireless fidelity，WiFi)系统中的接入节点等。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。本申请实施例提供的网络设备可以是由集中单元(central unit，CU)与分布式单元(distributed unit，DU)组成的，其中，CU也可以称为控制单元(control unit)，采用CU-DU的结构可以将网络设备，例如基站的协议层拆分开，部分协议层的功能放在CU集中控制，剩下部分或全部协议层的功能分布在DU中，由CU集中控制DU。
本申请实施例中的终端设备102是用户侧的一种用于接收或发射信号的实体，如手机。终端设备也可以称为终端设备(terminal)、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端设备(mobile terminal，MT)等。终端设备可以是具备通信功能的汽车、智能汽车、手机(mobile phone)、穿戴式设备、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self-driving)中的无线终端设备、远程手术(remote medical surgery)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备等等。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
新一代的增强现实(Augmented Reality，AR)、虚拟现实(Virtual Reality，VR)，车车通信等新型互联网应用的不断涌现对于无线通信技术提出了更高的要求，驱使无线通信技术的不断演进以满足应用的需求。当下，蜂窝移动通信技术正在处于新一代技术的演进阶段。新一代技术的一个重要特点就是要支持多种业务类型的灵活配置。由于不同的业务类型对于无线通信技术有不同的要求，如增强移动宽带(Enhanced Mobile Broadband，eMBB) 业务类型主要的要求侧重在大带宽，高速率等方面；高可靠低时延通信(Ultra Reliable Low Latency Communication，URLLC)业务类型主要的要求侧重在较高的可靠性以及低的时延方面；大规模机器类型通信(Massive MachineType Communication，mMTC)业务类型主要的要求侧重在大的连接数方面。因此新一代的无线通信系统需要灵活和可配置的设计来支持多种业务类型的传输。
在无线通信技术的研究中，卫星通信被认为是未来无线通信技术发展的一个重要方面。卫星通信是指地面上的无线电通信设备利用卫星作为中继而进行的通信。卫星通信系统由卫星部分和地面部分组成。卫星通信的特点是：通信范围大；只要在卫星发射的电波所覆盖的范围内，从任何两点之间都可进行通信；不易受陆地灾害的影响(可靠性高)。卫星通信作为目前地面的蜂窝通信系统的补充，可以有以下的好处：
(1)延伸覆盖：对于目前蜂窝通信系统无法覆盖或是覆盖成本较高的地区，如海洋，沙漠，偏远山区等，可以通过卫星通信来解决通信的问题。
(2)应急通信：在发生灾难如地震等的极端情况下导致蜂窝通信的基础设施不可用的条件下，使用卫星通信可以快速的建立通信连接。
(3)提供行业应用：比如对于长距离传输的时延敏感业务，可以通过卫星通信的方式来降低业务传输的时延。
可以预见，在未来的无线通信系统中，卫星通信系统和陆地上的蜂窝通信系统会逐步的实现深度的融合，真正的实现万物智联。
对于卫星通信的场景下，由于发送端与接收端存在较长的信号传输距离，导致数据传输有较大的时间。对于存在有上下行关系的传输，目前的标准化讨论中确定了引入Koffset的参数来补偿传输时延。
图2是本申请实施例提供的一种基站侧上下行定时对齐的示意图，如图4所示，eNBDL为基站侧下行通信、eNBUL为基站侧上行通信、UEDL为终端侧下行通信、UEUL为终端侧上行通信，n为参考子帧。参考点位于基站中，为了使eNBDL中的参考点n和eNBUL中的参考点处于同一子帧中，需要使终端设备提前检测信号，即使UEUL中的参考点提前，图中Delay为传输延迟，即信号在所述终端设备和基站中传播所用的时间。令所述UEUL中的n比所述UEUL中的n提前TA＝2×Delay的量，TA为时间提前量(Timing Advance，TA)。即可使eNBDL中的参考子帧n和eNBUL中的参考子帧n对齐。
图3是本申请实施例提供的一种基站侧上下行定时不对齐的示意图。如图5所示，eNBDL为基站侧下行通信、eNBUL为基站侧上行通信、UEDL为终端侧下行通信、UEUL为终端侧上行通信，n为参考点。参考点不位于基站中，为了使eNBDL中的参考点n和eNBUL中的参考点处于同一子帧中，需要使终端设备提前检测信号，即使UEUL中的参考点提前，图中Delay为传输延迟，即信号在所述终端设备和基站中传播所用的时间。令所述UEUL中的n比所述UEUL中的n提前一个TA的量。即可使eNBDL中的参考点n和eNBUL中的参考点处于同一子帧中。
所述Koffset可以应用在多种操作下，比如：DCI调度的PUSCH传输；HARQ反馈信息的传输以及MAC CE的传输等。对于某些上下行操作，还可以通过终端设备与网络设备UE-eNB的往返时间(Round-Trip Time，RTT)进行延迟补偿，来补偿终端到基站的传播时 延。
在卫星通信的场景下，不同的场景下采用的定时关系的范围可能是不一样的，取决于卫星的轨道信息以及参考点reference point的位置信息。定时关系的范围可能在[0ms,560ms]。
对于NB-IoT的终端，当终端发送了NPRACH序列，终端开启随机响应接收窗口RA Response window的时间位置确定方法如下：
如果NPRACH的重复传输次数大于或是等于64，那么RA Response window开始位置是从最后一个包含前导码preamble重复传输的子帧n+UE-eNB RTT+41ms；
如果NPRACH的重复传输次数小于64，那么RA Response window开始位置是从最后一个包含前导码preamble重复传输的子帧n+UE-eNB RTT+4ms；.
对于在NTN场景下支持的NB-IoT设备，如果通过UE-eNB RTT去确定RA Response window的开始位置，在某些场景下，会导致不必要的额外的时延的增加
可以理解的是，本申请实施例描述的通信系统是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着系统架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
下面结合附图对本申请所提供的随机接入响应窗口的确定方法及其装置进行详细地介绍。
请参见图4，图4是本申请实施例提供的一种随机接入响应窗口的确定方法的流程示意图。可应用于终端设备中。如图4所示，该方法可以包括但不限于如下步骤：
步骤S401：获取窄带物理随机接入信道NPRACH的重复传输次数。
本申请实施例中，所述终端设备具有全球导航卫星系统(Global Navigation SatelliteSystem，GNSS)定位能力，并且能够通过星历确定卫星的位置。所述终端设备在发送NPRACH时，能够自动估计时间提前量TA，并且提前进行预补偿，确定RA Response window的开启位置，具体为根据NPRACH的重复传输次数来确定随机响应接收窗口RA Response window的开启位置。为了扩展信号的覆盖范围，NPRACH信道可通过重复传播获得覆盖增强，重复次数可以是{1,2,4,8,16,32,64,128}。在一种可能的实施例中，NPRACH以64个无线帧为循环，在mod 64＝0的无线帧上的0号子帧进行传输，同样的内容在接下来连续的7个无线帧中的0号子帧进行重复传输，NPRACH不可占用0号子帧的前三个OFDM符号。根据所述NPRACH的重复传输次数可以确定获取随机接入响应窗口的开启位置的方法，所述重复传输次数大于预设阈值时和重复传输次数大于预设阈值时对应的确定方法不同。
步骤S402：获取第一设备和第二设备之间的往返时间RTT。
本申请实施例中，如背景技术所述的，NTN具有覆盖广、组网简单的优势。但是，但是受限于较大的轨道高度(35786km)，卫星信号传播时延大，实时业务体验差。为了补偿传输时延，还需要根据卫星信号在第一设备和第二设备之间的传输时间，也即RTT确定响应接收窗口RA Response window的开启位置。在一种可能的实施例中，所述第一设备为终端设备，所述第二设备为网络设备。在另一种可能的实施例中，所述第一设备为网络设备，所述第二设备为终端设备。
步骤S403：确定随机接入响应窗口的开启位置。
本申请实施例中，获取所述NPRACH的重复传输次数和所述RTT之后，即可确定获取随机接入响应窗口的开启位置。
通过实施本申请实施例，可以通过所述NPRACH的重复传输次数和所述RTT确定随机接入响应窗口的开启位置，通过这种方式，可以避免不必要的额外时延，从而有利于降低检测开销，避免资源浪费。
可选的，所述确定随机接入响应窗口的开启位置，包括：
根据所述RTT确定随机接入响应窗口的开启位置，其中，所述NPRACH的重复传输次数小于预设阈值。
本申请实施例中，为了扩展信号的覆盖范围，NPRACH信道可通过重复传播获得覆盖增强，重复次数可以是{1,2,4,8,16,32,64,128}。设置预设阈值来根据所述NPRACH的重复传输次数获取确定随机接入响应窗口的开启位置的方法。如果所述NPRACH的重复传输次数小于预设阈值，则可以根据RTT确定随机接入响应窗口的开启位置。在一种可能的实施例中，所述预设阈值为64，当所述NPRACH的重复传输次数小于64时，即可根据RTT确定随机接入响应窗口的开启位置。
请参见图5，图5是本申请实施例提供的一种随机接入响应窗口的确定方法的流程示意图。可应用于网络设备中。如图5所示，该方法可以包括但不限于如下步骤：
步骤S501：获取预设值。
本申请实施例中，所述预设值用于调整所述随机接入响应窗口的开启位置，所述预设值为固定的时间偏差，根据所述预设值可以更准确的确定所述随机接入响应窗口的开启位置。在一种可能的实施例中，所述预设值为41毫秒(ms)。
步骤S502：根据所述RTT和所述预设值确定随机接入响应窗口的开启位置，其中，所述NPRACH的重复传输次数大于或等于所述预设阈值。
本申请实施例中，为了扩展信号的覆盖范围，NPRACH信道可通过重复传播获得覆盖增强，重复次数可以是{1,2,4,8,16,32,64,128}。设置预设阈值来根据所述NPRACH的重复传输次数获取确定随机接入响应窗口的开启位置的方法。如果所述NPRACH的重复传输次数大于或等于所述预设阈值，则可以根据RTT和所述预设值确定随机接入响应窗口的开启位置。在一种可能的实施例中，所述预设阈值为64，当所述NPRACH的重复传输次数大于或等于64时，即可根据RTT和所述预设值确定随机接入响应窗口的开启位置。
通过实施本申请实施例，可以通过所述NPRACH的重复传输次数、预设值和所述RTT确定随机接入响应窗口的开启位置，通过这种方式，可以避免不必要的额外时延，从而有利于降低检测开销，避免资源浪费。
可选的，所述随机接入响应窗口的开启位置为：子帧n+RTT，n为整数。
本申请实施例中，所述NPRACH的重复传输次数小于预设阈值，则需要根据所述RTT确定所述随机接入响应窗口的开启位置。在一种可能的实施例中，所述预设阈值为64，所述NPRACH的重复传输次数为32次，RTT为200ms，最后一个包含所述NPRACH重复传输的子帧为子帧编号为7，则所述随机接入响应窗口的开启位置为子帧7+200ms。
可选的，所述随机接入响应窗口的开启位置为：子帧n+max{RTT，预设值}，n为整 数。
本申请实施例中，所述NPRACH的重复传输次数大于或等于预设阈值，则需要将所述RTT和所述预设值进行对比，以确定所述随机接入响应窗口的开启位置。在一种可能的实施例中，所述预设阈值为64，所述NPRACH的重复传输次数为128次，RTT为200ms，所述预设值41ms，最后一个包含所述NPRACH重复传输的子帧为子帧编号为6，则所述随机接入响应窗口的开启位置为子帧6+200ms。
在另一种可能的实施例中，所述预设阈值为64，所述NPRACH的重复传输次数为128次，RTT为33ms，所述预设值41ms，最后一个包含所述NPRACH重复传输的子帧为子帧编号为6，则所述随机接入响应窗口的开启位置为子帧6+41ms。
可选的，最后一个包含所述NPRACH重复传输的子帧为子帧n。
本申请实施例中，为了扩展信号的覆盖范围，NPRACH信道可通过重复传播获得覆盖增强，重复次数可以是{1,2,4,8,16,32,64,128}。在一种可能的实施例中，所述最后一个包含所述NPRACH重复传输的子帧编号为7，则所述n＝7。
可选的，所述第一设备为终端设备，所述第二设备为网络设备。
可选的，所述第一设备为网络设备，所述第二设备为终端设备。
本申请实施例中，如果所述第一设备为终端设备，则所述第二设备为网络设备；如果所述第一设备为网络设备，则所述第二设备为终端设备。
上述本申请提供的实施例中，分别从网络设备、终端设备的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，网络设备和终端设备可以包括硬件结构、软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能可以以硬件结构、软件模块、或者硬件结构加软件模块的方式来执行。
请参见图6，为本申请实施例提供的一种通信装置60的结构示意图。图6所示的通信装置60可包括收发模块601和处理模块602。收发模块601可包括发送模块和/或接收模块，发送模块用于实现发送功能，接收模块用于实现接收功能，收发模块601可以实现发送功能和/或接收功能。
通信装置60可以是终端设备(如前述方法实施例中的终端设备)，也可以是终端设备中的装置，还可以是能够与终端设备匹配使用的装置。或者，通信装置60可以是网络设备，也可以是网络设备中的装置，还可以是能够与网络设备匹配使用的装置。
通信装置60为终端设备，包括：
收发模块，用于获取窄带物理随机接入信道NPRACH的重复传输次数；
所述收发模块，还用于获取所述装置和第二设备之间的往返时间RTT；
处理模块，用于确定随机接入响应窗口的开启位置。
可选的，所述处理模块，还用于根据所述RTT确定随机接入响应窗口的开启位置，其中，所述NPRACH的重复传输次数小于预设阈值。
可选的，所述处理模块，还用于：
获取预设值；
根据所述RTT和所述预设值确定随机接入响应窗口的开启位置，其中，所述NPRACH 的重复传输次数大于或等于所述预设阈值。
可选的，所述随机接入响应窗口的开启位置为：子帧n+RTT，n为整数。
可选的，所述随机接入响应窗口的开启位置为：子帧n+max{RTT，预设值}，n为整数。
可选的，最后一个包含所述NPRACH重复传输的子帧为子帧n。
可选的，所述装置为终端设备，所述第二设备为网络设备。
可选的，所述装置为网络设备，所述第二设备为终端设备。
请参见图7，图7是本申请实施例提供的另一种通信装置70的结构示意图。通信装置70可以是网络设备，也可以是终端设备(如前述方法实施例中的终端设备)，也可以是支持网络设备实现上述方法的芯片、芯片系统、或处理器等，还可以是支持终端设备实现上述方法的芯片、芯片系统、或处理器等。该装置可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
通信装置70可以包括一个或多个处理器701。处理器701可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、基带芯片，终端设备、终端设备芯片，DU或CU等)进行控制，执行计算机程序，处理计算机程序的数据。
可选的，通信装置70中还可以包括一个或多个存储器702，其上可以存有计算机程序703，处理器701执行所述计算机程序703，以使得通信装置70执行上述方法实施例中描述的方法。可选的，所述存储器702中还可以存储有数据。通信装置70和存储器702可以单独设置，也可以集成在一起。
可选的，通信装置70还可以包括收发器704、天线705。收发器704可以称为收发单元、收发机、或收发电路等，用于实现收发功能。收发器704可以包括接收器和发送器，接收器可以称为接收机或接收电路等，用于实现接收功能；发送器可以称为发送机或发送电路等，用于实现发送功能。
可选的，通信装置70中还可以包括一个或多个接口电路706。接口电路706用于接收代码指令并传输至处理器701。处理器701运行所述代码指令以使通信装置70执行上述方法实施例中描述的方法。
通信装置70为终端设备(如前述方法实施例中的终端设备)：处理器701用于执行图4中的步骤S403。收发器704用于执行图4中的步骤S401，S402。
通信装置70为网络设备：处理器701用于执行图4中的步骤S403。收发器704用于执行图4中的步骤S401，S402。
在一种实现方式中，处理器701中可以包括用于实现接收和发送功能的收发器。例如该收发器可以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在一种实现方式中，处理器701可以存有计算机程序703，计算机程序703在处理器701上运行，可使得通信装置70执行上述方法实施例中描述的方法。计算机程序703可能 固化在处理器701中，该种情况下，处理器701可能由硬件实现。
在一种实现方式中，通信装置70可以包括电路，所述电路可以实现前述方法实施例中发送或接收或者通信的功能。本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor，PMOS)、双极结型晶体管(bipolar junction transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的通信装置可以是网络设备或者终端设备(如前述方法实施例中的终端设备)，但本申请中描述的通信装置的范围并不限于此，而且通信装置的结构可以不受图7的限制。通信装置可以是独立的设备或者可以是较大设备的一部分。例如所述通信装置可以是：
(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据，计算机程序的存储部件；
(3)ASIC，例如调制解调器(Modem)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；
(6)其他等等。
对于通信装置可以是芯片或芯片系统的情况，可参见图8所示的芯片的结构示意图。图8所示的芯片包括处理器801和接口802。其中，处理器801的数量可以是一个或多个，接口802的数量可以是多个。
可选的，芯片还包括存储器803，存储器803用于存储必要的计算机程序和数据。
本领域技术人员还可以了解到本申请实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件，或两者的结合进行实现。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员可以对于每种特定的应用，可以使用各种方法实现所述的功能，但这种实现不应被理解为超出本申请实施例保护的范围。
本申请实施例还提供一种随机接入响应窗口的确定系统，该系统包括前述图6实施例中作为终端设备(如前述方法实施例中的终端设备)的通信装置和作为网络设备的通信装置，或者，该系统包括前述图7实施例中作为终端设备(如前述方法实施例中的终端设备)的通信装置和作为网络设备的通信装置。
本申请还提供一种可读存储介质，其上存储有指令，该指令被计算机执行时实现上述任一方法实施例的功能。
本申请还提供一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一 方法实施例的功能。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序。在计算机上加载和执行所述计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机程序可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机程序可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以理解：本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围，也表示先后顺序。
本申请中的至少一个还可以描述为一个或多个，多个可以是两个、三个、四个或者更多个，本申请不做限制。在本申请实施例中，对于一种技术特征，通过“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”等区分该种技术特征中的技术特征，该“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”描述的技术特征间无先后顺序或者大小顺序。
本申请中各表所示的对应关系可以被配置，也可以是预定义的。各表中的信息的取值仅仅是举例，可以配置为其他值，本申请并不限定。在配置信息与各参数的对应关系时，并不一定要求必须配置各表中示意出的所有对应关系。例如，本申请中的表格中，某些行示出的对应关系也可以不配置。又例如，可以基于上述表格做适当的变形调整，例如，拆分，合并等等。上述各表中标题示出参数的名称也可以采用通信装置可理解的其他名称，其参数的取值或表示方式也可以通信装置可理解的其他取值或表示方式。上述各表在实现时，也可以采用其他的数据结构，例如可以采用数组、队列、容器、栈、线性表、指针、链表、树、图、结构体、类、堆、散列表或哈希表等。
本申请中的预定义可以理解为定义、预先定义、存储、预存储、预协商、预配置、固化、或预烧制。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟 悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (19)

  1. 一种随机接入响应窗口的确定方法，其特征在于，所述方法包括：
    获取窄带物理随机接入信道NPRACH的重复传输次数；
    获取第一设备和第二设备之间的往返时间RTT；
    确定随机接入响应窗口的开启位置。
  2. 根据权利要求1所述的方法，其特征在于，所述确定随机接入响应窗口的开启位置，包括：
    根据所述RTT确定随机接入响应窗口的开启位置，其中，所述NPRACH的重复传输次数小于预设阈值。
  3. 根据权利要求1所述的方法，其特征在于，所述确定随机接入响应窗口的开启位置，包括：
    获取预设值；
    根据所述RTT和所述预设值确定随机接入响应窗口的开启位置，其中，所述NPRACH的重复传输次数大于或等于所述预设阈值。
  4. 根据权利要求2所述的方法，其特征在于，所述随机接入响应窗口的开启位置为：子帧n+RTT，n为整数。
  5. 根据权利要求3所述的方法，其特征在于，所述随机接入响应窗口的开启位置为：子帧n+max{RTT，预设值}，n为整数。
  6. 根据权利要求4或5所述的方法，其特征在于，最后一个包含所述NPRACH重复传输的子帧为子帧n。
  7. 根据权利要求1-6中任一项所述的方法，其中，所述第一设备为终端设备，所述第二设备为网络设备。
  8. 根据权利要求1-6中任一项所述的方法，其中，所述第一设备为网络设备，所述第二设备为终端设备。
  9. 一种通信装置，其特征在于，包括：
    收发模块，用于获取窄带物理随机接入信道NPRACH的重复传输次数；
    所述收发模块，还用于获取所述装置和第二设备之间的往返时间RTT；
    处理模块，用于确定随机接入响应窗口的开启位置。
  10. 根据权利要求9所述的装置，其特征在于，
    所述处理模块，还用于根据所述RTT确定随机接入响应窗口的开启位置，其中，所述NPRACH的重复传输次数小于预设阈值。
  11. 根据权利要求9所述的装置，其特征在于，所述处理模块，还用于：
    获取预设值；
    根据所述RTT和所述预设值确定随机接入响应窗口的开启位置，其中，所述NPRACH的重复传输次数大于或等于所述预设阈值。
  12. 根据权利要求10所述的装置，其特征在于，所述随机接入响应窗口的开启位置为：子帧n+RTT，n为整数。
  13. 根据权利要求11所述的装置，其特征在于，所述随机接入响应窗口的开启位置为：子帧n+max{RTT，预设值}，n为整数。
  14. 根据权利要求12或13所述的装置，其特征在于，最后一个包含所述NPRACH重复传输的子帧为子帧n。
  15. 根据权利要求9-14中任一项所述的装置，其中，所述装置为终端设备，所述第二设备为网络设备。
  16. 根据权利要求9-14中任一项所述的装置，其中，所述装置为网络设备，所述第二设备为终端设备。
  17. 一种通信装置，其特征在于，所述装置包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行如权利要求1-8中任一项所述的方法。
  18. 一种通信装置，其特征在于，包括：处理器和接口电路；
    所述接口电路，用于接收代码指令并传输至所述处理器；
    所述处理器，用于运行所述代码指令以执行如权利要求1-8中任一项所述的方法。
  19. 一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使如权利要求1-8中任一项所述的方法被实现。
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