WO2020063482A1 - Procédé et dispositif de transmission de signaux d'accès aléatoire - Google Patents

Procédé et dispositif de transmission de signaux d'accès aléatoire Download PDF

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Publication number
WO2020063482A1
WO2020063482A1 PCT/CN2019/107042 CN2019107042W WO2020063482A1 WO 2020063482 A1 WO2020063482 A1 WO 2020063482A1 CN 2019107042 W CN2019107042 W CN 2019107042W WO 2020063482 A1 WO2020063482 A1 WO 2020063482A1
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Prior art keywords
random access
access signal
information
index
terminal device
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PCT/CN2019/107042
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English (en)
Chinese (zh)
Inventor
刘建琴
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华为技术有限公司
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Publication of WO2020063482A1 publication Critical patent/WO2020063482A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for transmitting a random access signal.
  • a terminal device In order for a terminal device to access the network, it is necessary to first obtain downlink synchronization with the cell through a cell search process, and then establish a connection with the cell and obtain uplink synchronization through a random access procedure.
  • the random access process first requires the terminal device to send random access signals at specific time-frequency resource locations, and these specific time-frequency resource locations are configured by the network device and indicated to the terminal device.
  • a physical random access channel (physical random access channel (PRACH)) configuration table under the authorized spectrum is defined, which includes the time-frequency resource location of the terminal device sending a random access signal.
  • Configuration Different from the licensed spectrum scenario, in the unlicensed spectrum scenario, the data transmission of network equipment or terminal equipment is based on the listen-before-talk (LBT) mechanism, that is, before sending data, the network equipment or terminal equipment must first Listening to the channel. Only when the channel is monitored successfully, will there be a chance to perform data downlink or uplink transmission. The LBT results are often uncertain. Therefore, the related configuration in the PRACH table in the licensed spectrum scenario cannot be directly applied in the unlicensed spectrum scenario. Therefore, for an unlicensed spectrum scenario in NR, a special configuration scheme needs to be designed.
  • LBT listen-before-talk
  • the present application provides a method and device for transmitting a random access signal, and provides a configuration scheme for transmission of a random access signal in an unlicensed spectrum scenario.
  • the present application provides a method for transmitting a random access signal.
  • the method includes: a terminal device receiving system information from a network device, where the system information is used to indicate a transmission period, a transmission format, and a system frame number of the random access signal.
  • the terminal device receives first control information from the network device, and the first control information is used to indicate a subframe number or a slot number or a starting orthogonal frequency division multiplexing OFDM symbol for transmitting the random access signal .
  • the network device indicates one or more of a transmission cycle, a transmission format, or a system frame number of the random access signal to the terminal device through the system information. Further, according to the result of the channel monitoring, the network device indicates to the terminal device, through the first control information, a subframe number or a slot number or a start symbol for transmitting a random access signal. In this way, the subframe number, slot number, or start symbol that the network device indicates to the terminal device is configured based on the result of the channel monitoring, so it can be applied to random access in an unlicensed spectrum scenario.
  • the method further includes: the terminal device determines, according to the system information and the first control information, a first time unit for sending a random access signal in a first period, the first The period is any one of the transmission periods of the random access signal indicated by the system information.
  • the first period includes at least two time units.
  • the terminal device listens to the channel on at least two time units included in the first period. When the monitoring channel succeeds on the second time unit that is located before the first time unit in the period, the terminal device determines the second time unit as the time unit that sends the random access signal in the first period.
  • the terminal device after the terminal device determines the time unit for transmitting the random access signal in the first period according to the system information and the first control information, the terminal device adjusts the time unit for transmitting the random access signal according to the LBT result.
  • the method further includes: the terminal device determines, according to the system information and the first control information, a first time unit for sending a random access signal in a first period, the first The period is any one of the transmission periods of the random access signal indicated by the system information.
  • the first period includes at least two time units.
  • the method further includes: the terminal device receives adjustment information from the network device, and the adjustment information is used to indicate a first time unit for transmitting a random access signal in a first period It is adjusted to a fourth time unit, and the fourth time unit is located in the first period.
  • the method further includes: the terminal device determines the fourth time unit as a time unit for transmitting a random access signal in the first period according to the adjustment information.
  • the network device after the network device indicates the time unit for transmitting the random access signal in the first period through the system information and the first control information, the network device is instructed to adjust the time unit according to the LBT result.
  • the random access signal has multiple candidate transmission formats, and each candidate transmission format in the multiple candidate transmission formats is in a configuration table of the random access signal. The proportion is determined according to the duration of sending the random access signal corresponding to each candidate transmission format.
  • the first control information is specifically used to indicate an index of one or more subframe numbers for transmitting a random access signal, and the index of the one or more subframe numbers is absolute An index of a subframe number or a relative subframe number; or, the first control information is specifically used to indicate an index of one or more timeslot numbers for transmitting a random access signal, and when the index of the one or more timeslot numbers is absolute An index of a slot number or a relative slot number; or, the first control information is specifically used to indicate an index of one or more OFDM symbols transmitting the random access signal, and the index of the one or more OFDM symbols is an absolute OFDM symbol Or relative OFDM symbol index.
  • the method further includes: receiving channel occupation time COT information from the network device, where the COT information is used to indicate information about a transmission time period preempted by the network device, and the transmission
  • the time period information includes a start time of the transmission time period and / or a duration of the transmission time period.
  • the method further includes: when the first control information is used to indicate an index of a relative subframe number for transmitting a random access signal, the terminal device according to the COT information and The index of the relative subframe number determines the absolute subframe number of the random access signal transmission; or when the first control information is used to indicate the index of the relative slot number of the random access signal transmission, the terminal device according to the COT information and The index of the relative slot number determines the absolute slot number of the random access signal.
  • the relative subframe number or relative slot number configured by the network device is the relative time within the transmission time period successfully seized by the LBT. Therefore, the relative time is determined in the time domain that can be used to send a random access signal. Resource location, which can improve the transmission efficiency of random access signals.
  • the COT information includes one or more bits
  • the terminal device receives the COT information from the network device, including: the terminal device receives demodulation of the physical broadcast channel PBCH from the network device
  • the reference signal DMRS or the tracking reference signal TRS, the DMRS or TRS of the PBCH carries COT information; or the terminal device receives the second control information from the network device, and the second control information carries the COT information.
  • the network device may be carried through the PBCH, DMRS, and TRS.
  • the network device may carry the second control information.
  • the second control information may be carried by a downlink control channel. Further optionally, the second control information may be public control information.
  • the common control information refers to control information common to all terminal devices in a cell where the terminal device is located.
  • the present application provides a method for transmitting a random access signal.
  • the method includes: a network device sends system information to a terminal device, and the system information is used to indicate a transmission period, a transmission format, and a system frame number of the random access signal.
  • the network device sends first control information to the terminal device, where the first control information is used to indicate a subframe number or a slot number or a start orthogonal frequency division multiplexing OFDM symbol for transmitting a random access signal.
  • the method further includes: the network device sends adjustment information to the terminal device, where the adjustment information is used to indicate a first time unit for transmitting a random access signal in a first period Adjusted to the fourth time unit.
  • the first cycle is any one of the transmission cycles of the random access signal indicated by the system information.
  • the first cycle includes at least two time units. The first time unit and the fourth time unit belong to the first cycle. .
  • the random access signal has multiple candidate transmission formats, and each candidate transmission format in the multiple candidate transmission formats is described in a configuration table of the random access signal. The proportion is determined according to the duration of sending a random access signal corresponding to each candidate transmission format.
  • the first control information is specifically used to indicate an index of one or more subframe numbers for transmitting a random access signal, and the index of the one or more subframe numbers is absolute An index of a subframe number or a relative subframe number; or, the first control information is specifically used to indicate an index of one or more timeslot numbers for transmitting a random access signal, and when the index of the one or more timeslot numbers is absolute An index of a slot number or a relative slot number; or, the first control information is specifically used to indicate an index of one or more OFDM symbols transmitting a random access signal, and the index of the one or more OFDM symbols is an absolute OFDM symbol or a relative The index of the OFDM symbol.
  • the method further includes: the network device sends the channel occupation time COT information to the terminal device, where the COT information is used to indicate the transmission time period information preempted by the network device,
  • the information of the transmission time period includes a start time of the transmission time period and / or a duration of the transmission time period.
  • the COT information includes one or more bits
  • the network device sends the COT information to the terminal device, including: the network device sends demodulation of the physical broadcast channel PBCH to the terminal device
  • the reference signal DMRS or the tracking reference signal TRS, the DMRS or TRS of the PBCH carries COT information; or, the network device sends second control information to the terminal device, and the second control information carries the COT information.
  • the present application provides a method for transmitting a random access signal.
  • the method includes: a terminal device receiving system information from a network device, where the system information is used to indicate a relative subframe number or relative time when transmitting the random access signal. Slot number; the terminal device determines a time domain resource location for transmitting a random access signal according to the system information.
  • the present application provides a method for transmitting a random access signal.
  • the method includes: a terminal device receiving downlink control information from a network device, where the downlink control information is used to indicate a relative subframe number or Relative slot number; the terminal device determines a time domain resource location for transmitting a random access signal according to the downlink control information.
  • the network device indicates the relative subframe number or the relative slot number for transmitting the random access signal to the terminal device through the system information or downlink control information, which can improve the transmission of the random access signal. effectiveness.
  • the present application provides a communication device having the functions of a terminal device in any possible implementation manner of the first aspect, the third aspect, or the fourth aspect. These functions can be implemented by hardware, or they can also be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units corresponding to these functions.
  • the present application provides a communication device having the functions of a network device in any possible implementation manner of the second aspect, the third aspect, or the fourth aspect. These functions can be implemented by hardware, or they can also be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units corresponding to these functions.
  • the present application provides a terminal device including a transceiver, a processor, and a memory.
  • the processor is used to control the transceiver to send and receive signals
  • the memory is used to store the computer program
  • the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the method in the first aspect or any possible implementation manner of the first aspect.
  • the present application provides a network device, including a transceiver, a processor, and a memory.
  • the processor is used to control the transceiver to send and receive signals
  • the memory is used to store the computer program
  • the processor is used to call and run the computer program stored in the memory, so that the network device executes the method in the second aspect or any possible implementation manner of the second aspect.
  • the present application provides a computer-readable storage medium.
  • the computer-readable storage medium stores instructions. When the instructions are run on a computer, the computer is caused to execute the first aspect or any possible implementation of the first aspect. Way in the way.
  • the present application provides a computer-readable storage medium.
  • the computer-readable storage medium stores instructions. When the instructions are run on a computer, the computer is caused to execute the second aspect or any possible implementation manner of the second aspect. Method.
  • the present application provides a chip provided by the present application, including a processor.
  • the processor is configured to read and execute a computer program stored in the memory to perform the foregoing first aspect or the method in any possible implementation manner of the first aspect.
  • the chip should include a memory, and the memory is connected to the processor.
  • the chip further includes a communication interface, and the processor is connected to the communication interface.
  • the communication interface is used to receive data and / or information that needs to be processed.
  • the processor obtains the data and / or information from the communication interface, processes the data and / or information, and outputs the processing result through the communication interface.
  • the communication interface may be an input-output interface.
  • the present application provides a chip including a processor.
  • the processor is configured to read and execute the computer program stored in the memory to perform the method in the second aspect or any possible implementation manner of the second aspect.
  • the chip should include a memory, and the memory is connected to the processor.
  • the chip further includes a communication interface, and the processor is connected to the communication interface.
  • the communication interface is used to receive data and / or information that needs to be processed.
  • the processor obtains the data and / or information from the communication interface, processes the data and / or information, and outputs the processing result through the communication interface.
  • the communication interface may be an input-output interface.
  • the foregoing memory and the memory may be physically independent units, or the memory may be integrated with the processor.
  • the present application provides a computer program product.
  • the computer program product includes computer program code.
  • the computer program code runs on a computer, the computer causes the computer to execute the first aspect and any one of the possible implementation manners. Methods.
  • the present application provides a computer program product.
  • the computer program product includes computer program code.
  • the computer program code runs on a computer, the computer causes the computer to execute the second aspect and any possible implementation manner of the second aspect. Method.
  • the network device indicates one or more of a transmission period, a transmission format, or a system frame number of the random access signal to the terminal device through the system information. Further, according to the result of the channel monitoring, the network device indicates to the terminal device, through the first control information, a subframe number or a slot number or a start symbol for transmitting a random access signal. In this way, the subframe number, slot number, or start symbol that the network device indicates to the terminal device is configured based on the result of channel monitoring, so that it can be applied to random access in an unlicensed spectrum scenario.
  • FIG. 1 is a schematic diagram of a wireless communication system applicable to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a method for transmitting a random access signal provided by the present application.
  • FIG. 3 is a schematic diagram of a device for transmitting a random access signal provided by the present application.
  • FIG. 4 is a schematic diagram of a device for transmitting a random access signal provided by the present application.
  • FIG. 5 is a schematic structural block diagram of a terminal device applicable to an embodiment of the present application.
  • FIG. 6 is a schematic structural block diagram of a network device applicable to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a wireless communication system 100 applicable to an embodiment of the present application.
  • the wireless communication system 100 may include at least one network device 101, and the network device 101 performs wireless communication with one or more terminal devices (for example, the terminal device 102 and the terminal device 103 shown in FIG. 1).
  • the wireless communication system 100 involved in the present application includes, but is not limited to, a global mobile communication (GSM) system, a code division multiple access (CDMA) system, and a wideband code division multiple access (wideband code).
  • division multiple access (WCDMA) system general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division Duplex (time division duplex (TDD)), universal mobile communication system (UMTS), worldwide interconnected microwave access (worldwide interoperability for microwave access, WiMAX) communication systems, next-generation mobile communication systems (e.g., 5G)
  • GSM global mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE LTE frequency division duplex
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile communication system
  • WiMAX worldwide interconnected microwave access
  • next-generation mobile communication systems e
  • the terminal devices involved in the embodiments of the present application may be user equipment (UE), terminals, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile devices , User terminal, terminal, wireless communication device, user agent, or user device.
  • Terminal equipment can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital processing (PDA), and wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or public land mobile network (PLMN) in future evolution Terminal equipment, etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital processing
  • PLMN public land mobile network
  • the network equipment involved in the embodiments of the present application may be a global system (GSM) system or a base station (BTS) in a code division multiple access (CDMA) system. It can be a base station (nodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evolved nodeB, eNB, or eNodeB) in an LTE system, or cloud wireless A wireless controller in a cloud access network (CRAN) scenario.
  • the network device may also be a relay station, an access point, a vehicle-mounted device, a wearable device, etc. of a future communication system (for example, 5G).
  • the technical solution provided in this application is applicable to random access of terminal equipment in an unlicensed spectrum scenario.
  • the random access process requires a network device to configure a time domain resource location for a terminal device to transmit a random access signal. For example, a transmission cycle of a random access signal, a system frame number, a sub-frame number, or a slot number.
  • This application provides several ways for a network device to indicate to a terminal device the location of a time domain resource for transmitting a random access signal, which are described below respectively.
  • the network device instructs the terminal device on the time domain resource location to send the random access signal through the system message and the downlink control information.
  • FIG. 2 is a schematic flowchart of a method 200 for transmitting a random access signal provided by the present application.
  • the network device sends system information to the terminal device.
  • the terminal device receives system information from a network device.
  • the system information is used to indicate one or more of a transmission cycle, a transmission format, and a system frame number of the random access signal.
  • the random access signal may also be called a RACH, a RACH signal, a preamble, or the like.
  • the transmission timing of the random access signal may be called an access timing (RACH Occasion, RO) and the like.
  • RO access timing
  • the network device may configure one or more ROs for the terminal device in a system frame, a subframe, or a RACH slot.
  • the transmission cycle, transmission format, and system frame number have the same meanings as in the prior art.
  • the transmission period can be 10ms, 20ms, 40ms, 80ms, 160ms.
  • Transmission formats can be divided into long-sequence transmission formats and short-sequence transmission formats.
  • the transmission format of the long sequence may include transmission formats 0 to 3.
  • the short sequence transmission format can include A1, A2, A3, B1, B4, A1 / B1, A2 / B2, A3 / B3, C0, C2.
  • a system frame number (system frame number, SFN) refers to a system frame number used to transmit RACH among at least one system frame number included in a RACH transmission cycle, and is therefore also referred to as a RACH system frame number.
  • the system frame number is a relative frame number of at least one system frame included in a RACH transmission period.
  • system information herein may be remaining minimum system information (RMSI), which is also called system information block 1 (SIB1).
  • RMSI remaining minimum system information
  • SIB1 system information block 1
  • the network device sends the first control information to the terminal device, and the terminal device receives the first control information from the network device.
  • the first control information is used to indicate a subframe number or a slot number or a start orthogonal frequency division multiplexing OFDM symbol for transmitting a random access signal.
  • the subframe number of the random access signal refers to the subframe number of the RACH transmission.
  • one subframe is usually 1 ms.
  • the slot number of the random access signal is also called a RACH slot number.
  • the random access timeslot number is the sequence number of the timeslots contained in a system frame.
  • the random access slot number can be any one of 0,1,2, ..., 8,9.
  • the subcarrier interval is 30 kHz, a system frame contains 20 time slots.
  • the random access slot number can be any one of 0,1,2, ..., 18,19.
  • the subcarrier interval is 60 kHz
  • one system frame contains 40 time slots.
  • the random access slot number can be any one of 0,1,2, ..., 38,39.
  • Each RACH slot may include one or more RACH occasions (RACH occasions, RO).
  • the starting OFDM symbol of a random access signal is also called a RACH starting symbol.
  • the RACH start symbol is one OFDM symbol among a plurality of OFDM symbols included in one RACH slot.
  • the value of the RACH start symbol can be any one of 0,1, ..., 12,13.
  • the value of the RACH start symbol can be 0, 1, ..., 6 , Any one of 7.
  • the first control information in the embodiment of the present application may be downlink control information (downlink control information).
  • the network device indicates one or more of a transmission cycle, a transmission format, or a system frame number of the random access signal to the terminal device through the system information. Further, according to the result of the channel monitoring, the network device indicates to the terminal device, through the first control information, a subframe number or a slot number or a start symbol for transmitting a random access signal. In this way, the subframe number, slot number, or start symbol that the network device indicates to the terminal device is configured based on the result of the channel monitoring, so it can be applied to random access in an unlicensed spectrum scenario.
  • the result of channel access can be dynamically and adaptively tracked, thereby increasing the unlicensed spectrum The efficiency of random access in scenarios.
  • the method 200 may further include steps 230 and 240.
  • the terminal device determines a time domain resource location for sending a random access signal according to the received system information and the first control information.
  • time domain resource location is also the RO described above.
  • the terminal device sends a random access signal to the network device at the determined time domain resource location.
  • the terminal device determines a time domain resource location for sending the random access signal according to the system information and the first control information, including determining a system frame number, a subframe number, or a time slot number for sending the random access signal.
  • the following describes how the terminal device determines the system frame number of the random access signal.
  • this arbitrary transmission cycle is hereinafter referred to as a first cycle.
  • the first period includes one or more time units.
  • the time unit may be a time unit such as a system frame, a subframe, a time slot, or an OFDM symbol, which is not limited herein.
  • the terminal may determine that a time unit for sending a random access signal in a first period configured by the network device is a first time unit.
  • the first time unit may be any one of one or more time units included in the first period.
  • the network device configures the time unit for transmitting random access signals in the first cycle as the first time unit, it cannot guarantee that Resources are seized in the first time unit, or in other words, there is no guarantee that LBT will succeed in the first time unit. Therefore, after determining the first time unit of the random access signal transmission in the first cycle, the terminal device may also adjust the time unit of the random access signal transmission in the first cycle by way 1 and / or mode 2 described below. .
  • the terminal device adopts the method 1 and / or the method 2, which means that the terminal device can adjust the time unit for transmitting the random access signal only by using the method 1 or adjust the time unit for transmitting the random access signal only by using the method 2. .
  • the terminal device adjusts the time unit for transmitting the random access signal by combining the mode 1 and the mode 2.
  • the terminal device adjusts a time unit for sending a random access signal in the first period according to a channel monitoring result.
  • the terminal device may first determine a time unit for sending a random access signal in a first cycle configured by the network device according to the system information and / or the first control information. Further, the terminal device monitors the channel on one or more time units included in the first period. If the terminal device successfully monitors the channel on another time unit (hereinafter referred to as the second time unit) located before the first time unit, the terminal device determines the second time unit as a time unit that sends a random access signal in the first period . In other words, the terminal device adjusts the first time unit for sending the random access signal in the first period to the second time unit.
  • the second time unit another time unit located before the first time unit
  • the terminal device will send a random access signal to the network device on the second time unit.
  • the second time unit is also located in the first period, and the second time unit may be any time unit located before the first time unit in the first period.
  • the terminal device determines, according to the system information and / or the first control information, that a time unit for sending a random access signal in a first period configured by the network device is a system frame x.
  • the terminal device listens to the channel in a system frame in the first cycle. If the terminal device successfully monitors the channel on system frame y, and system frame y precedes system frame x in time, the terminal device will assume that the system frame that sends the random access signal in the first cycle is adjusted from system frame x to system frame y.
  • the system frame x and the system frame y are both system frames located in the first period. Where y ⁇ 0 and y is an integer
  • a system frame is known to be 10 ms.
  • one transmission cycle includes two system frames, which are denoted as system frame 0 and system frame 1.
  • the system frame number of the random access signal configured by the network device is 1, and the terminal device successfully monitors the channel on system frame 0, then the terminal device will assume the system that sends the random access signal in this period.
  • the frame number is adjusted to system frame 0.
  • the terminal device will assume that the time unit of sending the random access signal in the first cycle is adjusted to the third time unit.
  • the third time unit is a time unit located after the first time unit and adjacent to the first time unit, and the third time unit is also located in the first period.
  • the terminal device determines, according to the system information and / or the first control information, that a time unit for sending a random access signal in a first period configured by the network device is a system frame x.
  • the terminal device listens to the channel on the system frame in the first cycle. If the terminal device fails to monitor the channel on the system frame x, the terminal device will assume that the system frame that sends the random access signal in the first cycle is automatically extended from the system frame x to the next system frame x + 1.
  • the system frame x and the system frame x + 1 are both system frames located in the first period. Among them, x ⁇ 0, and x is an integer.
  • the transmission period of the random access signal is 20 ms, and a system frame is known to be 10 ms, two transmission frames are included in one transmission period, which are denoted as system frame 0 and system frame 1, respectively.
  • system frame 0 the transmission period of the random access signal
  • system frame 1 the transmission period of the random access signal configured by the network device
  • the terminal device fails to monitor the channel on system frame 0.
  • the frame number is automatically adjusted to system frame 1.
  • the terminal device fails to listen to the channel on the system frame x + 1, the terminal device will assume that the system frame x + 1 that sends a random access signal in the first cycle is continued to be extended to the next system frame x + 2. And so on, until the monitoring channel is successful. At this time, the terminal device will assume that a system frame (for example, recorded as a system frame x + n) that successfully monitors the channel is determined as a system frame that sends a random access signal in the first period.
  • the system frame x + n is located in the first period in time, and n is a positive integer.
  • the terminal device fails to monitor the channel on all time units in the first cycle, it enters the next cycle.
  • the process by which the terminal device determines the time unit for sending a random access signal is the same as the above-mentioned first cycle, and is not repeated here.
  • the terminal device after the terminal device fails to monitor the channel on the first time unit, it automatically extends the time unit transmitting the random access signal to the next time unit.
  • the time unit for transmitting the random access signal is extended to any time unit after the first time unit without The extension is limited to the step size of 1, which is not limited in this application.
  • the above description uses the time unit as a system frame as an example.
  • the time unit as a subframe, a time slot, or an OFDM symbol
  • the time domain resource position of the random access mentioned above is dynamically adjusted according to the LBT result.
  • the method is still feasible and applicable. For example, assuming that in a certain period, the subframe number for sending random access signals in a system frame configured by a network device is 0, and the terminal device fails to monitor the channel on subframe 0, the terminal device will assume that the The subframe number of the random access signal is automatically adjusted to subframe 1 or any other subframe that is predefined.
  • the number of the subframes in which a random access signal is sent in a system frame configured by the network device is 1, and the terminal device successfully monitors the channel in subframe 0, the terminal device will assume that the subframe in which the random access signal is sent in this period The number is automatically adjusted to subframe 0 or any other subframe that is predefined.
  • the network device instructs the terminal device to adjust a time unit for sending a random access signal in the first period according to a channel monitoring result.
  • the network unit configures the time unit for sending the random access signal in the first period to the terminal device through the system information and / or the first control information as the first time unit. After that, the network device listens to the channel. If the network device successfully monitors the channel at other time units in the first cycle, the network device sends adjustment information to the terminal device, and the adjustment information is used to instruct the terminal device to adjust the first time unit that sends the random access signal in the first cycle. It is the fourth time unit, and the fourth time unit is located in time in the first period.
  • the fourth time unit here is only numbered for distinguishing from the second time unit and the third time unit in the above manner 1.
  • the fourth time unit refers to a time unit in which the network device successfully monitors the channel. Therefore, the fourth time unit may be any time unit other than the first time unit in the first period.
  • the fourth time unit may be located before the first time unit, or may be located after the first time unit, which is not limited in this application.
  • the adjustment information may be transmitted by the network device through system information, RRC signaling, DCI signaling, phase reference signals (TRS), and channel state information reference signals (CSI-RS). Any one or more of the demodulation reference signal or the common control information of the physical broadcast channel is indicated to the terminal device, which is not limited in this application.
  • the adjustment information is indicated to the terminal device by the DMRS of the TRS, CSI-RS, or PBCH, optionally, it is carried by the initialization value, cyclic shift value, or scrambling code of the TRS sequence, CSI-RS sequence, or DMCH sequence of PBCH The adjustment information.
  • the network device instructs the terminal device on the time domain resource location for transmitting the random access signal by using the system information and / or the first downlink control information.
  • the network device indicates to the terminal device the location of the time domain resource that sends the random access signal in a semi-static manner through the system information.
  • the time domain resource location for transmitting random access signals can be configured or indicated by the network device through system information. Before the network device performs the next configuration, the terminal device can periodically reuse the same time domain resource location.
  • the terminal device determines the time unit for transmitting a random access signal in a transmission period according to the semi-static indication of the network device, it needs to correct the The time unit for transmitting the random access signal during the transmission period configured by the network device is adjusted.
  • the process for the terminal device to adjust the time unit used to transmit the random access signal in a transmission cycle can refer to the adjustment of the first time unit described in Mode 1 and Mode 2 above. The process is exactly the same, and is not repeated here. .
  • the system information described in Mode B may be RMSI.
  • the network device indicates the system frame number of the random access signal to the terminal device through the RMSI semi-statically.
  • the system frame number is determined semi-statically based on the RMSI first. Subsequently, the system frame number is adjusted according to the channel monitoring result. Finally, a random access signal is transmitted to the network device on the system frame number where the channel is successfully monitored.
  • the network device indicates the location of the time domain resource for transmitting the random access signal to the terminal device through the system information or the downlink control information.
  • the network device indicates to the terminal device at least one of a relative subframe number or a relative slot number for transmitting the random access signal through the system information.
  • the relative sub-frame number refers to the sub-frame number indicated by the system information, which is the relative sub-frame number in the transmission time period preempted by the network device.
  • the relative time slot number refers to a time slot number indicated by the system information, which is a relative time slot number in a transmission time period preempted by the network device.
  • the random access signal RACH may support multiple candidate transmission formats. These candidate transmission formats may include A1, B1, C0, A1 + B1, A2 + B2, A2, B2, C2, and so on.
  • the definition of each transmission format is the same as the definition of these transmission formats supported by RACH in the licensed spectrum scenario.
  • the proportion of different transmission formats in the configuration table may correspond to the duration of sending RACH corresponding to each transmission format.
  • a transmission format with a longer duration occupies a smaller proportion in the RACH configuration table, and a transmission format with a shorter duration occupies a larger proportion in the RACH configuration table.
  • a transmission format with a longer duration occupies fewer lines in the RACH configuration table, and a transmission format with a shorter duration occupies more lines in the RACH configuration table.
  • the relationship between the proportion and size of each transmission format in the RACH configuration table in the unlicensed spectrum scenario may be shown in the following formula (1).
  • A1 / B1 / C1 represents A1 or B1 or C1.
  • A2 / B2 / C2 means A2 or B2 or C2. That is, in the formula (1), the character "/" represents the meaning of "or”.
  • the proportion of any one of the transmission formats A1, B1, or C1 in the RACH configuration table is greater than or equal to the transmission format A1 + B1.
  • the proportion of the transmission format A1 + B1 in the RACH configuration table is greater than or equal to any one of the transmission formats A2, B2, or C2.
  • the transmission format A2 + B2 occupies the smallest proportion in the RACH configuration table.
  • the proportion of any of the transmission formats A1, B1, or C1 in the RACH configuration table is 20%
  • the proportion of transmission format A1 + B1 in the RACH configuration table is 15%
  • the transmission format A2 Either B2 or C2 occupies 8% of the RACH configuration table
  • the transmission format A2 + B2 occupies 1% of the RACH configuration table.
  • PRACH ConfigIndex is a value from 0 to m (for example, 0 to 255), where m is a positive integer greater than 0.
  • PRACH ConfigIndex Each value corresponds to a row in the PRACH ConfigIndex, and each row corresponds to a random access signal such as the transmission format of the random access signal, the system frame number, the transmission period, and the specific time slot position or subframe position of the random access signal in the system frame.
  • Configuration parameters In other words, the PRACH ConfigIndex defines a pattern of random access resources that appear periodically.
  • Table 1 is an example of a part of the RACH configuration table.
  • the random access signal is composed of a cyclic prefix (CP), a length of a preamble sequence, and a GP.
  • CP cyclic prefix
  • GP is the difference between the preamble sequence and the PRACH slot length.
  • T_CP the length of the CP
  • T_SEQ the length of the leader sequence
  • T_GP the length of the GP
  • small cells generally refer to small base stations other than macro base stations, and may include micro base stations, nano base stations, pico cells, femtocells, and the like.
  • Normal cell indicates a normal Acer station.
  • a small cell may refer to a cell with a relatively small coverage radius.
  • a normal cell may refer to a cell with a medium or normal coverage radius.
  • ratio given in formula (1) is only an example, and the embodiment of the present application does not limit the ratio of each transmission format in the RACH configuration table.
  • the time-frequency resource location of a network device configured to send a random access signal will be affected by the uncertainty of the LBT result. There is no guarantee that a part of the time-frequency resource location will always be transmitted. Therefore, in order to increase the random access opportunity of the terminal device and improve the efficiency of random access, in the above step 220, the content indicated by the first control information may specifically include the following possibilities.
  • the first control information is used to indicate an index of one or more subframe numbers for transmitting a random access signal, and the index of the one or more subframe numbers is an index relative to the subframe number;
  • the first control information is used to indicate an index of one or more timeslot numbers for transmitting a random access signal, and the index of the one or more timeslot numbers is an index of a relative timeslot number; or,
  • the first control information is used to indicate a starting OFDM symbol for transmitting a random access signal.
  • the relative subframe number or the relative slot number or the relative OFDM symbol refers to the subframe number, the slot number, or the OFDM symbol indicated by the first control information, which is a relative subframe number in the transmission time period COT preempted by the network device Or relative slot number or relative OFDM symbol.
  • the network device may indicate the relative subframe number or the relative time slot number by sending the first control information to the terminal device.
  • one system frame includes 10 subframes, and each subframe is 1 ms.
  • the transmission time period preempted by the network device is 2ms
  • the transmission time period may include two subframes. If the two subframes are numbered 0 and 1, respectively, the relative subframe number in the transmission time period may be Subframe number 0 and subframe number 1. That is to say, if the network device indicates the relative sub-frame 0 in the transmission time period to the terminal device, it indicates that the network device indicates a more definitive time domain position in the transmission time period. The first 1ms or the second 1ms in the transmission time period.
  • the relative time slot numbers in the transmission time period can be time slot number 0, time slot number 1, and time slot number. 2 and slot number 3. If the network device indicates the relative slot number 2 to the terminal device, the terminal device may determine the time domain position where the random access signal is transmitted as the third slot number of the 2ms.
  • the network device indicates the location of the time-frequency resource for transmitting the random access signal by using the relative subframe number or the relative slot number, which can increase the random access efficiency of the terminal device.
  • the reason is that compared with the absolute sub-frame number or absolute slot number indicated by the network device, the network device cannot predict because it is affected by the uncertainty of channel access on the unlicensed spectrum, that is, the randomness of the LBT result. On which specific subframe will LBT succeed (that is, to obtain a channel access opportunity), resulting in blindly configured absolute subframes or absolute time slot positions of network devices that cannot actually send random access signals.
  • the relative subframe number or relative slot number configured in this application is the relative time within the transmission time period successfully seized by the LBT. Therefore, it is possible to determine the location of the time domain resource for sending the random access signal, thereby improving the random access. Transmission efficiency of incoming signals.
  • the first control information may also be used to indicate an index of one or more subframe numbers for transmitting a random access signal, and the index of the one or more subframe numbers is an absolute subframe. The index of the number.
  • the first control information may also be used to indicate an index of one or more timeslot numbers for transmitting a random access signal, and the index of the one or more timeslot numbers is an index of an absolute timeslot number.
  • the first control information may also be used to indicate an index of one or more OFDM symbols for transmitting a random access signal, and the index of the one or more OFDM symbols is an index of absolute OFDM.
  • the first control information may also be used to indicate an index of one or more system frame numbers for transmitting a random access signal.
  • the network device When the network device indicates the relative subframe number or the relative slot number or the relative OFDM symbol to the terminal device, further, the network device further needs to send channel occupation time (COT) information to the terminal device.
  • COT channel occupation time
  • the COT information is used to indicate information of a signal transmission time period preempted by the network device, and the information of the transmission time period includes a start time of the transmission time period and / or a duration of the transmission time period.
  • the terminal device determines an absolute subframe number for transmitting a random access signal according to the received COT information and the relative subframe number.
  • the terminal device determines an absolute slot number for transmitting a random access signal according to the received COT information and the relative slot number.
  • the terminal device determines an absolute OFDM symbol for transmitting a random access signal according to the received COT information and the relative OFDM symbol.
  • the relative subframe number may be a relative subframe number in the COT, or the relative slot number is a relative slot number in the COT. It is understandable that the relative subframe number or the relative slot The number may also be a relative subframe number or a relative slot number in other predefined time periods, which is not limited herein.
  • the terminal device may also implicitly determine a system frame number for transmitting a random access signal according to the COT information indicated by the network device.
  • the COT information is indicated to the terminal device through the first control information, it means that the determination of the system frame number for transmitting a random access signal is implicitly determined by the first control information, and therefore is dynamic.
  • the network device when the network device indicates the relative subframe number or the relative slot number to the terminal device through the first control information, according to a field in the first control information indicating a time domain resource location for transmitting a random access signal (hereinafter Recorded as an indication field) is always present, the network device may have the following two designs.
  • the network device specifically configures an indication field in the first control information.
  • This indication field exists regardless of whether the network device preempts the COT or indicates to the terminal device a relative subframe number or a relative slot number. .
  • the indication field carries one or several bits for indication. If the network device indicates an absolute subframe number or an absolute slot number or an absolute OFDM symbol, the indication field may be set to invalid.
  • Whether the indication field is set in the first control information depends on whether the network device preempts the COT.
  • the network device preempts the COT, the network device indicates the relative subframe number or relative slot number or relative OFDM symbol to the terminal device. At this time, the network device sets an indication field in the first control information. If the network device does not preempt the COT, or the network device indicates the absolute subframe number or the absolute slot number or the absolute OFDM symbol to the terminal device, the network device does not set the indication field in the first control information.
  • the embodiment of the present application does not limit which design of the above (1) and (2) is specifically adopted by the network device.
  • the COT information includes one or several bits.
  • the network device may choose to send COT information to the terminal device in different ways.
  • the network device may carry the COT information through some reference signals.
  • a network device sends a PBCH DMRS or TRS to a terminal device, and the sequence initialization value of the PBCH DMRS or TRS carries COT information.
  • the sequence cyclic shift value of the PBCH DMRS or TRS carries COT information.
  • the scrambling code sequence of the PBCH, DMRS or TRS carries COT information.
  • a system frame can be divided into multiple segments according to the length of the supported COT, and the multiple segment information is carried through different TRS sequences.
  • the 10ms contained in a system frame can be divided into 5 interval segments, respectively segment 1 (interval segment 1, the same below): 0 to 1 ms, segment 2: 2 to 3 ms, segment 3: 4 ⁇ 5ms, segment 4: 6-7ms, segment 5: 8-9ms.
  • the COT preempted during the LBT success can be any one of the five intervals.
  • segment 1 corresponds to a 2 ms interval corresponding to 0 ms-1 ms of the system frame
  • segment 2 corresponds to a 2 ms interval corresponding to 2 ms to 3 ms of the system frame
  • segment 3 corresponds to 2 ms corresponding to 4 ms to 5 ms of the system frame.
  • Interval segment. The rest can be deduced by analogy. Based on different segment information, initialization values or cyclic shift values of different TRS sequences can be obtained, thereby generating different TRS sequences.
  • Table 2 is an example of the relative subframe or slot number of the random access signal within the COT configured by the RMSI.
  • the subframe numbers 0 ', 1', and 2 ' indicate the relative subframe numbers of the random access signal in the COT after the LBT succeeds.
  • nSFN represents the absolute system frame number of the random access signal transmission, x is the transmission period of the random access signal / 10, and y is the relative system frame number of the random access signal in one transmission period.
  • the network device should ensure that each row in the RACH configuration table meets the chance of at least M RACH transmissions.
  • the product in the last two columns in Table 2 should be greater than or equal to M.
  • the product of the last two columns of each row in Table 2 is greater than or equal to 12, that is, the corresponding configuration of each row can guarantee at least 12 opportunities for RACH transmission.
  • the value of M may be predefined, may be configured by a network device, or may be determined implicitly.
  • the network device will be implicitly associated with different M values according to the LBT type, which is not limited in this application.
  • M 2, 4, 8, 12, or 24.
  • the network device sends the second control information to the terminal device, and the second control information carries the COT information.
  • the second control information may be public control information.
  • the meaning of the common control information is control information common to all terminal devices in the cell.
  • the second control information may also be control information of a terminal device group.
  • the control information of the terminal device group refers to control information common to a group of terminal devices.
  • the second control information is carried by a downlink control channel.
  • the method 200 for transmitting a random access signal and various possible implementations thereof provided in the present application have been described in detail with reference to FIG. 1 and FIG. 2.
  • the apparatus, terminal equipment, and network equipment for transmitting random access signals provided in this application are described below.
  • FIG. 3 is a schematic diagram of an apparatus 500 for transmitting a random access signal provided by the present application.
  • the apparatus 500 includes a communication unit 510.
  • the communication unit 510 is configured to receive system information from a network device, where the system information is used to indicate one or more of a transmission cycle, a transmission format, and a system frame number of a random access signal;
  • the communication unit 510 is further configured to receive first control information from the network device, where the first control information is used to indicate a subframe number or a slot number or a start orthogonal frequency division multiplexing OFDM symbol for transmitting a random access signal.
  • the communication unit 510 may include a receiving unit and a transmitting unit, and has a function of receiving and transmitting at the same time.
  • the device 500 and the terminal device in the method embodiment completely correspond, and the corresponding units of the device 500 are configured to perform the corresponding steps performed by the terminal device in the above method 200 and its various embodiments.
  • the communication unit 510 in the apparatus 500 performs the steps of receiving and / or transmitting in the method embodiment, for example, the step 210 of receiving the system information from the network device in FIG. 2 or the step of receiving the first control information from the network device 220.
  • a step of receiving second control information or COT information from a network device, or the like is performed.
  • the apparatus 500 may also be a chip or an integrated circuit installed in a terminal device.
  • the communication unit 510 may be a transceiver.
  • the transceiver may include a transmitter and a receiver, which collectively implement the receiving and transmitting functions.
  • the communication unit 510 may also be an input / output interface.
  • the apparatus 500 further includes a processing unit 520.
  • the processing unit 520 is configured to execute steps in the device 500 that are performed by the device 500 except for receiving and sending.
  • the processing unit 520 may be a processor.
  • the processing unit 510 is configured to perform step 220. That is, according to the system information and the first control information received by the communication unit 510, a time-frequency resource location for transmitting a random access signal is determined.
  • the processing unit 520 is configured to determine a first time unit for sending a random access signal in a first period according to the system information and the first control information, and the first period is a transmission period of the random access signal indicated by the system information.
  • Any one of the first cycle includes at least two time units; the communication unit 510 is further configured to monitor the channel on at least two time units included in the first cycle; the processing unit 520 is further configured to determine that the communication unit 510 is at the first time When the monitoring channel succeeds on the second time unit before the unit, the second time unit is determined as a time unit for sending a random access signal in the first period.
  • the processing unit 520 is configured to determine a first time unit for sending a random access signal in a first period according to the system information and the first control information, and the first period is a transmission period of the random access signal indicated by the system information.
  • Any one of the first cycle includes at least two time units; the communication unit 510 is further configured to monitor the channel on at least two time units included in the first cycle; the processing unit 520 is further configured to determine that the communication unit 510 is at the first time When the monitoring channel on the unit fails, a third time unit located after the first time unit and adjacent to the first time unit is determined as a time unit that sends a random access signal in the first period.
  • the communication unit 510 is further configured to receive adjustment information from a network device.
  • the adjustment information refer to the method embodiment, and details are not described herein again.
  • the communication unit 520 is further configured to receive channel occupation time COT information from the network device, and the COT information is used to indicate information about a transmission time period preempted by the network device, and the transmission time period information includes a start time of the transmission time period And / or the duration of the transmission period.
  • the processing unit 520 when the first control information is used to indicate an index of a relative subframe number for transmitting a random access signal, the processing unit 520 is further configured to determine, based on the COT information and an index of the relative subframe number, a method for transmitting the random access signal. Absolute subframe number; or, when the first control information is used to indicate an index of a relative slot number for transmitting a random access signal, the processing unit 520 is further configured to determine the transmission random access according to the COT information and the index of the relative slot number. The absolute time slot number of the incoming signal; or,
  • the processing unit 520 is further configured to determine, according to the COT information and an index of a relative OFDM symbol, a signal in which the random access signal is transmitted. Absolute OFDM symbol.
  • the relative subframe number is a relative subframe number in the COT
  • the relative slot number is a relative slot number in the COT
  • the relative OFDM symbol is a relative OFDM symbol in the COT.
  • the communication unit 610 is further configured to receive a demodulation reference signal DMRS or a tracking reference signal TRS of a physical broadcast channel PBCH from a network device, and the DMRS or TRS of the PBCH carries the COT information; or,
  • the communication unit 610 is further configured to receive the second control information from the network device, and the second control information carries the COT information.
  • FIG. 4 is a schematic diagram of an apparatus 600 for transmitting a random access signal provided by the present application.
  • the device 600 includes a communication unit 610.
  • the communication unit 610 is configured to send system information to the terminal device, where the system information is used to indicate one or more of a transmission cycle, a transmission format, and a system frame number of the random access signal;
  • the communication unit 610 is further configured to send first control information to the terminal device, where the first control information is used to indicate a subframe number or a slot number or a start orthogonal frequency division multiplexing OFDM symbol for transmitting a random access signal.
  • the apparatus 600 corresponds exactly to the network device in the method embodiment, and the corresponding units of the apparatus 600 are configured to perform the corresponding steps performed by the network device in the above method 200 and its various embodiments.
  • the communication unit 610 in the apparatus 600 is configured to perform the steps of sending and / or receiving in the method embodiment.
  • the communication unit 610 performs step 210 of sending system information to the terminal device in FIG. 2, or performs step 220 of sending first control information to the terminal device.
  • the communication unit 610 further performs a step of sending COT information or second control information to the terminal device.
  • the apparatus 600 may also be a chip or an integrated circuit installed in a network device.
  • the communication unit 610 may be a transceiver.
  • the transceiver includes a transmitter and a receiver, which together implement the receiving and transmitting functions.
  • the communication unit 610 may also be an input / output interface.
  • the apparatus 600 further includes a processing unit 620.
  • the processing unit 620 is configured to execute steps in the device 600 that are performed by the device 600 except for receiving and sending.
  • the processing unit 620 is configured to generate system information, first control information, or second control information.
  • the processing unit 620 may be a processor.
  • the communication unit 610 is further configured to send adjustment information to the terminal device.
  • the adjustment information refer to the method embodiment, and details are not described herein again.
  • the communication unit 610 is further configured to send channel occupation time COT information to the terminal device, where the COT information is used to indicate information of a transmission time period preempted by the network device, and the information of the transmission time period includes the The start time of the transmission time period and / or the duration of the transmission time period.
  • the communication unit 610 is further configured to send a demodulation reference signal DMRS or a tracking reference signal TRS of the physical broadcast channel PBCH to the terminal device, and the DMRS or TRS of the PBCH carries the COT information; or,
  • FIG. 5 is a schematic structural block diagram of a terminal device 700 applicable to an embodiment of the present application.
  • the terminal device 700 includes: one or more processors 701, one or more memories 702, and one or more transceivers 703.
  • the processor 701 is configured to control the transceiver 703 to send and receive signals
  • the memory 702 is configured to store a computer program
  • the processor 701 is configured to call and run the computer program from the memory 702 to execute the method 200 for sending and receiving feedback information provided in the present application. And corresponding processes and / or operations performed by the terminal device in each embodiment. I won't repeat them here.
  • FIG. 6 is a schematic structural block diagram of a network device 3000 applicable to an embodiment of the present application.
  • the network device 3000 may be applied to the wireless communication system shown in FIG. 1 described above, and performs the functions of the network device in the method embodiment of the present application.
  • the network device 3000 may be, for example, a base station.
  • the network device 3000 may include one or more radio frequency units, such as a remote radio unit (RRU) 3100 and one or more baseband units (BBU).
  • the baseband unit can also be referred to as a digital unit (DU) 3200.
  • the RRU 3100 may be referred to as a transceiver unit, and corresponds to the communication unit 610 in FIG. 4.
  • the transceiver unit 3100 may also be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 3101 and a radio frequency unit 3102.
  • the transceiver unit 3100 may include a receiving unit and a transmitting unit.
  • the receiving unit may correspond to a receiver (or a receiver or a receiving circuit), and the transmitting unit may correspond to a transmitter (or a transmitter or a transmitting circuit).
  • the RRU 3100 part is mainly used to transmit and receive radio frequency signals and convert radio frequency signals to baseband signals, for example, to send system information, first control information, adjustment information, COT information, and second control information to a terminal device.
  • the BBU 3200 part is mainly used for baseband processing and controlling base stations.
  • the RRU 3100 and the BBU 3200 may be physically located together, or may be physically separated, that is, a distributed base station.
  • the BBU 3200 is the control center of the network equipment 3000, and may also be called a processing unit, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spread spectrum.
  • the BBU processing unit
  • the BBU may be used to control the base station to execute the operation process performed by the network device in the foregoing method embodiment, for example, generating system information, first control information, adjustment information, COT information, or second control information.
  • the BBU 3200 may be composed of one or more boards, and multiple boards may jointly support a wireless access network (for example, an LTE network) of a single access system, or may separately support different access systems. Wireless access network (for example, LTE network, 5G network or other network).
  • the BBU 3200 further includes a memory 3201 and a processor 3202.
  • the memory 3201 is configured to store necessary instructions and data.
  • the processor 3202 is configured to control the network device 3000 to perform necessary actions.
  • the processor 3202 is configured to control the network device 3000 to perform an operation process performed by the network device in the foregoing method embodiment.
  • the memory 3201 and the processor 3202 may serve one or more single boards. That is, the memory and processor can be set separately on each board. It is also possible that multiple boards share the same memory and processor. In addition, the necessary circuits can be set on each board.
  • the network device 3000 shown in FIG. 6 can implement the functions of the network device involved in the method embodiment.
  • the operations and / or functions of each unit in the network device 3000 are respectively to implement the corresponding processes performed by the network device in the method embodiment of the present application. To avoid repetition, detailed descriptions are appropriately omitted here.
  • the above BBU 3200 can be used to perform the actions implemented by the network device described in the foregoing method embodiments, for example, generating association relationship indication information.
  • the RRU 3100 can be used to perform the actions that the network device described in the foregoing method embodiment sends to or receives from the terminal device. For example, system information, first control information, and the like are sent to the terminal device. For details, refer to the description in the foregoing method embodiment, and details are not described herein again.
  • the present application also provides a computer-readable storage medium.
  • the computer-readable storage medium stores computer instructions, and when the computer instructions are run on a computer, the computer is caused to execute a method for transmitting a random access signal according to an embodiment of the present application. Corresponding operations and / or processes performed by the terminal device in the method 200 and its various embodiments.
  • the present application also provides a computer program product.
  • the computer program product includes computer program code.
  • the computer program code runs on a computer, the computer causes the computer to execute the method 200 for transmitting a random access signal according to the embodiments of the present application and implementations thereof.
  • the present application also provides a chip, including a processor.
  • the processor is configured to read and run a computer program stored in a memory to execute the method 200 for transmitting a random access signal provided in the present application and corresponding operations and / or processes performed by a terminal device in various embodiments.
  • the chip further includes a memory connected to the processor, and the processor is configured to read and execute a computer program in the memory.
  • the chip further includes a communication interface, and the processor is connected to the communication interface.
  • the communication interface is configured to receive data and / or information to be processed, and the processor obtains the data and / or information from the communication interface and processes the data and / or information.
  • the communication interface may be an input-output interface.
  • the present application provides a computer-readable storage medium.
  • the computer-readable storage medium stores computer instructions.
  • the computer instructions When executed on a computer, the computer is caused to execute a method for transmitting a random access signal according to an embodiment of the present application.
  • the present application also provides a computer program product.
  • the computer program product includes computer program code.
  • the computer program code runs on a computer, the computer causes the computer to execute the method 200 for transmitting a random access signal according to the embodiments of the present application and implementations thereof.
  • the present application also provides a chip, including a processor.
  • the processor is configured to call and run a computer program stored in the memory to execute the method 200 for sending and receiving feedback information in the embodiments of the present application and corresponding operations and / or processes performed by network devices in the embodiments.
  • the chip further includes a memory connected to the processor, and the processor is configured to read and execute a computer program in the memory.
  • the chip further includes a communication interface, and the processor is connected to the communication interface.
  • the communication interface is configured to receive data and / or information to be processed, and the processor obtains the data and / or information from the communication interface and processes the data and / or information.
  • the communication interface may be an input-output interface.
  • the processor may be a central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more technologies for controlling the present application.
  • Integrated circuit of program execution may be a digital signal processor device, a microprocessor device, an analog-to-digital converter, a digital-to-analog converter, and the like.
  • the processor may allocate control and signal processing functions of the terminal device or network device among these devices according to their respective functions.
  • the processor may have a function of operating one or more software programs, and the software programs may be stored in a memory.
  • the functions of the processor may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the memory can be read-only memory (ROM), other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types of information and instructions that can store Dynamic storage devices can also be electrically erasable programmable read-only memory (EEPROM-ready-only memory (EEPROM)), read-only compact discs (compact disc-read-only memory (CD-ROM)) or other optical disc storage, optical disc storage (CD-ROM) (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media, or other magnetic storage devices, or they can be used to carry or store the desired program code in the form of instructions or data structures and can Any other media etc. accessed by the computer.
  • the memory and the memory involved in the foregoing embodiments may be physically independent units, or the memory may also be integrated with the processor.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be another division manner in actual implementation.
  • multiple units or components can be combined or integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may not be physically separated, and the components displayed as units may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the technical solution of the present application.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application.
  • the aforementioned storage media include: U disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or compact discs and other media that can store program codes .

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

Abstract

La présente invention concerne un procédé et un dispositif de transmission de signaux d'accès aléatoire, qui fournissent une solution de configuration pour la transmission de signaux d'accès aléatoire dans le scénario d'un spectre de fréquences non autorisé. Le procédé comprend les étapes suivantes : un dispositif de terminal reçoit des informations de système en provenance d'un dispositif de réseau, les informations de système étant utilisées pour indiquer un ou plusieurs éléments parmi une période de transmission, un format de transmission et un nombre de trames de système d'un signal d'accès aléatoire ; et le dispositif de terminal reçoit des premières informations de commande provenant du dispositif de réseau, les premières informations de commande étant utilisées pour indiquer un nombre de sous-trames, un nombre de créneaux temporels ou un symbole de multiplexage par répartition orthogonale de la fréquence (OFDM) initial pour transmettre le signal d'accès aléatoire.
PCT/CN2019/107042 2018-09-29 2019-09-20 Procédé et dispositif de transmission de signaux d'accès aléatoire WO2020063482A1 (fr)

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CN201811149786.8A CN110972294B (zh) 2018-09-29 2018-09-29 传输随机接入信号的方法和装置
CN201811149786.8 2018-09-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111526503A (zh) * 2020-04-29 2020-08-11 中国电子科技集团公司第五十四研究所 一种geo卫星物联网鉴权方法和系统
CN113825189A (zh) * 2020-06-20 2021-12-21 华为技术有限公司 一种切换控制方法及通信装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113677012A (zh) * 2020-05-15 2021-11-19 维沃移动通信有限公司 随机接入信号的传输方法和终端
CN113973370A (zh) * 2020-07-23 2022-01-25 大唐移动通信设备有限公司 随机接入前导码序列的发送、接收方法、终端及网络设备
CN117204080A (zh) * 2021-04-16 2023-12-08 华为技术有限公司 一种应用免授权频谱的通信方法及装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080117887A1 (en) * 2006-11-09 2008-05-22 Innowireless Co., Ltd. Wimax system analyzer having ras emulation function and method of acquiring ul synchronization and testing pss using the same
CN102724757A (zh) * 2011-03-30 2012-10-10 中兴通讯股份有限公司 一种控制信道信息处理方法和系统
CN104685803A (zh) * 2013-09-13 2015-06-03 华为技术有限公司 一种信息传输的方法、装置及系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016122279A1 (fr) * 2015-01-30 2016-08-04 Samsung Electronics Co., Ltd. Procédé et dispositif pour la gestion de blocs d'informations système, canal physique de diffusion dans un réseau de communication sans fil
EP3316648B1 (fr) * 2015-08-10 2019-12-18 Huawei Technologies Co., Ltd. Procédé et appareil d'accès aléatoire
CN105704834B (zh) * 2016-04-01 2019-03-22 宇龙计算机通信科技(深圳)有限公司 非授权载波上前导码的配置方法、发送方法和相关设备
CN108024310B (zh) * 2016-11-04 2020-09-11 华为技术有限公司 用于传输数据的方法、终端设备和网络设备
US10791577B2 (en) * 2017-03-24 2020-09-29 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for random access in a wireless communication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080117887A1 (en) * 2006-11-09 2008-05-22 Innowireless Co., Ltd. Wimax system analyzer having ras emulation function and method of acquiring ul synchronization and testing pss using the same
CN102724757A (zh) * 2011-03-30 2012-10-10 中兴通讯股份有限公司 一种控制信道信息处理方法和系统
CN104685803A (zh) * 2013-09-13 2015-06-03 华为技术有限公司 一种信息传输的方法、装置及系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LG ELECTRONICS: "R1-1808506, Physical layer design of UL signals and channels for NR unlicensed operation", 3GPP TSG RAN WGI MEETING #94, 24 August 2018 (2018-08-24), XP051515884 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111526503A (zh) * 2020-04-29 2020-08-11 中国电子科技集团公司第五十四研究所 一种geo卫星物联网鉴权方法和系统
CN111526503B (zh) * 2020-04-29 2022-06-24 中国电子科技集团公司第五十四研究所 一种geo卫星物联网鉴权方法和系统
CN113825189A (zh) * 2020-06-20 2021-12-21 华为技术有限公司 一种切换控制方法及通信装置
CN113825189B (zh) * 2020-06-20 2023-05-16 华为技术有限公司 一种切换控制方法及通信装置

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