WO2020020335A1 - 随机接入的方法和装置 - Google Patents

随机接入的方法和装置 Download PDF

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Publication number
WO2020020335A1
WO2020020335A1 PCT/CN2019/097877 CN2019097877W WO2020020335A1 WO 2020020335 A1 WO2020020335 A1 WO 2020020335A1 CN 2019097877 W CN2019097877 W CN 2019097877W WO 2020020335 A1 WO2020020335 A1 WO 2020020335A1
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WIPO (PCT)
Prior art keywords
information
random access
symbol
time domain
uplink information
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PCT/CN2019/097877
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English (en)
French (fr)
Inventor
徐伟杰
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to AU2019310816A priority Critical patent/AU2019310816A1/en
Priority to JP2021502577A priority patent/JP2021533606A/ja
Priority to KR1020217003430A priority patent/KR20210036930A/ko
Priority to EP19841289.2A priority patent/EP3820230B1/en
Priority to CN201980049641.7A priority patent/CN112514508A/zh
Publication of WO2020020335A1 publication Critical patent/WO2020020335A1/zh
Priority to US17/149,253 priority patent/US11576202B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/26025Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/2605Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607Cyclic extensions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • H04L27/2613Structure of the reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/0278Traffic management, e.g. flow control or congestion control using buffer status reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • H04W74/004Transmission of channel access control information in the uplink, i.e. towards network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding

Definitions

  • Embodiments of the present application relate to the field of communications technologies, and in particular, to a method and an apparatus for random access.
  • Random access is the most basic function of a cellular system, which makes it possible for a terminal device to establish a communication connection with a network device.
  • a new wireless (New Radio, NR) system or 5G system, 5G network
  • LTE Long Term Evolution
  • LTE Long Term Evolution
  • the embodiments of the present application provide a method and device for random access, which can reduce the signaling overhead of the random access process.
  • a random access method including: a terminal device sends a first message to a network device, the first message includes a random access preamble and uplink information, and the random access preamble is in a time domain Occupies at least one first symbol, and the PUSCH occupies at least one second symbol in the time domain, where a first symbol includes a first cyclic prefix CP and at least one first information segment, and a second symbol includes a second CP And at least one second piece of information.
  • a random access method including: a network device receives a first message sent by a terminal device, the first message includes a random access preamble and uplink information, and the random access preamble is in a time domain Occupy at least one first symbol on the PUSCH, and the PUSCH occupies at least one second symbol in the time domain, wherein a first symbol includes a first cyclic prefix CP and at least one first information segment, and a second symbol includes a second CP and at least one second information segment.
  • a terminal device is provided to execute the method in the first aspect or the implementations thereof.
  • the terminal device includes a functional module for executing the method in the above-mentioned first aspect or each implementation manner thereof.
  • a network device for executing the method in the second aspect or the implementation manners thereof.
  • the network device includes a function module for executing the method in the second aspect or the implementations thereof.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, and execute the method in the above-mentioned first aspect or its implementations.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or the implementations thereof.
  • a chip is provided for implementing any one of the first to second aspects or a method in each implementation thereof.
  • the chip includes a processor for invoking and running a computer program from a memory, so that a device installed with the chip executes any one of the first aspect to the second aspect described above or implementations thereof. method.
  • a computer-readable storage medium for storing a computer program that causes a computer to execute the method in any one of the first to second aspects described above or in its implementations.
  • a computer program product including computer program instructions that cause a computer to execute the method in any one of the first to second aspects described above or in various implementations thereof.
  • a computer program that, when run on a computer, causes the computer to execute the method in any one of the first to second aspects described above or in its implementations.
  • the same message sent by the terminal device to the network device may include the random access preamble and the PUSCH, which avoids using two signalings to send the random access preamble and the PUSCH to the network device. , which can reduce the signaling overhead of the random access process.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a four-step random access method according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a two-step random access method according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a random access method according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of multiple random access transmission formats provided by an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a network device according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a chip according to an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • GSM Global System for Mobile
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Frequency Division Duplex
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • LTE-A advanced long term evolution
  • NR system NR system evolution system
  • LTE-based access to unlicensed spectrum LTE-U
  • NR-U non-licensed NR-based access to unlicensed spectrum
  • UMTS Universal Mobile Telecommunication System
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Global Interoperability for Microwave Access
  • WLAN Wireless Local Area Network
  • None Fidelity Wireless Fidelity
  • WiFi next generation communication systems or other communication systems.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or a communication terminal or a terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located within the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • the network device may be a mobile switching center, relay station, access point, vehicle equipment, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in public land mobile networks (PLMN) that will evolve in the future.
  • PLMN public land mobile networks
  • the communication system 100 further includes at least one terminal device 120 located within a coverage area of the network device 110.
  • terminal equipment used herein includes, but is not limited to, connection via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection ; And / or another data connection / network; and / or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and / or another terminal device configured to receive / transmit communication signals; and / or Internet of Things (IoT) devices.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Line
  • WLAN wireless local area networks
  • DVB-H networks digital television networks
  • satellite networks satellite networks
  • AM- FM broadcast transmitter AM- FM broadcast transmitter
  • IoT Internet of Things
  • a terminal device configured to communicate through a wireless interface may be referred to as a “wireless communication terminal”, a “wireless terminal”, or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; personal communications systems (PCS) terminals that can combine cellular radiotelephones with data processing, facsimile, and data communications capabilities; can include radiotelephones, pagers, Internet / internal PDA with network access, web browser, notepad, calendar, and / or Global Positioning System (GPS) receiver; and conventional laptop and / or palm-type receivers or others including radiotelephone transceivers Electronic device.
  • PCS personal communications systems
  • GPS Global Positioning System
  • a terminal device can refer to an access terminal, user equipment (User Equipment), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Processing (PDA), and wireless communication.
  • terminal devices 120 may perform terminal direct device (D2D) communication.
  • D2D terminal direct device
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like in this embodiment of the present application is not limited thereto.
  • network entities such as a network controller, a mobility management entity, and the like in this embodiment of the present application is not limited thereto.
  • the device having a communication function in the network / system in the embodiments of the present application may be referred to as a communication device.
  • the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again.
  • the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller, a mobile management entity, and the like, which is not limited in the embodiments of the present application.
  • the embodiment of the present application only uses competition-based random access as an example for description, but the present application is not limited thereto, and the embodiment of the present application can also be applied to non-contention-based random access.
  • FIG. 2 is a schematic flowchart of a four-step random access method.
  • the terminal device sends a random access preamble (ie, message1, MSG1) to the network device on the random access channel.
  • a random access preamble ie, message1, MSG1
  • the network device sends a random access response (Random Access Response, RAR, ie message2, MSG2) to the terminal device after detecting the access preamble sent by the terminal device to inform the terminal device that it is sending message 3 ( message3, MSG3).
  • RAR Random Access Response
  • the RAR may carry timing advance (TA) information and a temporary wireless network temporary identifier (RNTI).
  • TA timing advance
  • RNTI temporary wireless network temporary identifier
  • the MSG2 message may be generated by a Media Access Control (MAC) layer of the network device.
  • MAC Media Access Control
  • One MSG2 message can correspond to the random access request response of multiple terminal devices at the same time.
  • the terminal device determines whether it belongs to its own RAR message. When it determines that it belongs to its own RAR message, it sends a message 3 (message3, MSG3) in the uplink resource designated by MSG2. Device-specific temporary identification information.
  • the network device may send a message 4 (message4, MSG4) to the terminal device.
  • the MSG4 includes a contention resolution message and uplink transmission resources allocated by the network device to the terminal device.
  • the terminal device After receiving the MSG4, the terminal device can detect whether the specific temporary identification information sent by the MSG3 is included in the contention resolution message sent by the network device. If it contains, it indicates that the random access process of the terminal device is successful, otherwise it is considered that the random process has failed, and the terminal device needs to initiate the random access process from the first step again.
  • MSG4 may be generated by a radio resource control (Radio Resource Control) layer of a network device.
  • Radio Resource Control Radio Resource Control
  • the delay of the four-step random access process is relatively large, which is not suitable for low-latency and high-reliability scenarios in 5G.
  • a two-step random access process scheme is proposed. In the two-step random access process, simply, it is equivalent to combining the first step and the third step of the four-step random access process into the first step in the two-step random access process, and the four-step random access The second and fourth steps of the process are combined into the second step of the two-step random access process.
  • FIG. 3 is a schematic diagram of a two-step random access process according to an embodiment of the present application.
  • the terminal device sends MSG1 to the network device.
  • This MSG1 includes a Preamble and a Physical Uplink Shared Channel (PUSCH).
  • PUSCH Physical Uplink Shared Channel
  • the PUSCH can carry terminal-specific identification information.
  • the network device sends a random access response MSG2 to the terminal device.
  • the MSG2 may carry TA information and temporary RNTI, and a contention resolution message, where the contention resolution message may include identification information of the terminal device.
  • FIG. 4 is a schematic flowchart of a random access method 400 according to an embodiment of the present application.
  • the method may be executed by a terminal device and may be applied to 310 in the method 300.
  • the method 400 includes at least part of the following.
  • the terminal device sends a first message to the network device, and the first message may include an uplink symbol carrying a Preamble and an uplink symbol carrying uplink information.
  • the 410 may correspond to 310 in the method 300.
  • the network device receives the first message sent by the terminal device.
  • the 420 may correspond to 320 in the method 300.
  • the first message includes the uplink symbol carrying the Preamble and the uplink symbol carrying the uplink information. It can be understood that the first message includes the Preamble and the uplink information.
  • the uplink symbol carrying the uplink information may be PUSCH, PUCCH, or other uplink channels or uplink reference signals that can be used to transmit uplink information, which is not limited in this application.
  • the uplink symbol carrying the uplink information is PUSCH as an example for description.
  • the following PUSCH may also be directly replaced with other uplink channels or reference signals that carry uplink information, such as PUCCH.
  • the Preamble occupies at least one first symbol in the time domain, and the PUSCH occupies at least one second symbol in the time domain.
  • a first symbol includes a first cyclic prefix (Cyclic Prefix, CP) and at least one first information segment.
  • a second symbol includes a second CP and at least one second information segment.
  • each of the first symbols may include at least one first CP and a plurality of the same first information segments.
  • the number of first CPs is smaller than the number of first information segments.
  • each of the first symbols may include a first CP and a plurality of identical information segments.
  • each of the second symbols may include at least one second CP and a plurality of identical second information pieces.
  • the number of second CPs is smaller than the number of second information segments.
  • each of the second symbols may include one second CP and a plurality of identical second information segments.
  • the number of CPs is less than the number of information segments. In this way, CP overhead in the PUSCH transmission process can be saved.
  • the first message including Preamble and PUSCH can be understood as: between the terminal device sending the Preamble and the PUSCH to the network device, there is no other message between the network device and the terminal device, and / or, the network device can target the Preamble and PUSCH At the same time, a random access response is sent to the terminal device.
  • the same information segment may indicate that the content in the information segment is the same, and the expression forms of the information segment are the same. That is, the first information segment in each first symbol can be repeated at least once, and the second information segment in each second symbol can be repeated at least once.
  • Preamble and PUSCH are Frequency Division Multiplexing (FDM) or Time Division Multiplexing (TDM).
  • FDM Frequency Division Multiplexing
  • TDM Time Division Multiplexing
  • the first symbol and the second symbol may be adjacent or non-adjacent in the time domain.
  • the first symbol may precede the second symbol in the time domain.
  • the first symbol may follow the second symbol in the time domain.
  • first symbol and the second symbol in the embodiments of the present application indicates a logical relationship, and there may be other symbols between the first symbol and the second symbol. At this time, the first symbol and the second symbol Not adjacent.
  • the time-domain positions of the first symbol and the second symbol may be the same, and the frequency-domain positions are different.
  • the number of CPs and / or the number of information segments included in different symbols may be the same or different.
  • the first symbol of the PUSCH includes one CP and two identical information segments, and the second symbol includes one CP and three identical information segments.
  • the first symbol of the PUSCH includes two CPs and two identical information segments, and the second symbol includes one CP and two identical information segments.
  • the first symbol of the PUSCH includes two CPs and two identical information segments
  • the second symbol includes two CPs and two identical information segments
  • the signals transmitted on each symbol may be the same or different, which is not specifically limited in this embodiment of the present application.
  • the information carried on the PUSCH may include information for distinguishing terminal devices, such as a terminal device identifier, an RNTI, and the like.
  • the RNTI may be selected by the terminal device from a set of RNTIs pre-configured by the network device for two-step RACH transmission.
  • the information carried on the PUSCH may include information for distinguishing the terminal device and a category to which an event sent by triggering a Physical Random Access Channel (Physical Random Access Channel, PRACH) belongs.
  • the events that trigger PRACH sending can include the following:
  • the terminal device needs to perform initial access.
  • the terminal device needs to re-establish the RRC connection.
  • the terminal device is in the RRC connection state and needs to be handed over from the serving cell to the target cell.
  • the terminal device is in the RRC connection state, but uplink synchronization is not achieved. At this time, the terminal device sends uplink data or receives downlink data.
  • the terminal device transitions from the RRC inactive state to the RRC connected state.
  • the terminal device is in the RRC connection state, and a positioning process needs to be performed at this time, but the terminal device does not have a TA.
  • the terminal device requests other system information (OSI).
  • OSI system information
  • the terminal device needs to recover the beam failure.
  • the terminal device may use multiple bits to indicate a category to which an event triggering PRACH transmission belongs. For example, you can use 3 bits to indicate the category to which the event that triggered the PRACH transmission belongs: "000” indicates that the terminal device needs initial access, "001” indicates that the terminal device needs to re-establish an RRC connection, and "010” indicates that the terminal device needs to perform a cell Switching, ..., "111” indicates that the terminal device needs to recover from Beam failure.
  • the information carried on the PUSCH may include information for distinguishing terminal devices, a category to which an event triggering PRACH transmission belongs, and information that needs to be transmitted to complete this event.
  • 3 bits "000" may be used to indicate that the terminal device needs initial access, and other bits may be used to indicate information that needs to be transmitted to complete the initial access, such as RRC RRC connection request generated by the layer.
  • connection reestablishment 3 bits “001” may be used to indicate that the terminal device needs to re-establish an RRC connection.
  • other bits may be used to indicate an RRC connection reestablishment request generated by the RRC layer.
  • 3 bits “010” may be used to indicate that the terminal device needs to perform the cell switching, and other bits may also be used to indicate the RRC handover completion message generated by the RRC layer.
  • the information carried on the PUSCH may further include, but is not limited to, a scheduling request (SR), a buffer status report (Buffer Status Report, BSR), and service data.
  • SR scheduling request
  • BSR buffer Status Report
  • service data service data
  • the subcarrier interval of the Preamble and the subcarrier interval of the PUSCH may be the same.
  • the subcarrier interval of the Preamble is 15kHZ
  • the subcarrier interval of the PUSCH is also 15kHZ.
  • the subcarrier interval of the Preamble is 30kHZ
  • the subcarrier interval of the PUSCH is also 30kHZ.
  • the subcarrier interval of the Preamble and the subcarrier interval of the PUSCH may be different.
  • the subcarrier interval of Preamble is 15kHZ
  • the subcarrier interval of PUSCH is 30kHZ.
  • the subcarrier interval of the Preamble is 60kHZ
  • the subcarrier interval of the PUSCH is 30kHZ.
  • the length of the first CP and the length of the second CP may be the same.
  • the length of the first CP and the length of the second CP may be different.
  • the length of the first CP may be greater than the length of the second CP.
  • the number of the second information segments may be determined based on the number of the first information segments.
  • the terminal device can obtain the number of the second information segments based on the number of the first information segments.
  • the number of the first information segments can be known in advance, or after receiving the preamble, the number of the first information segments can be known, and the number of the second information segments can be determined based on the number of the first information segments. .
  • the number of the first information segments may be determined based on the number of the second information segments.
  • the terminal device can obtain the number of the first information segments based on the number of the second information segments.
  • the number of the second information segments can be known in advance, or after receiving the uplink information, the number of the second information segments can be known, and the number of the first information segments can be determined based on the number of the second information segments. Quantity.
  • the first preset value may be preset by the system.
  • the terminal device or the network device may determine the number of the second information segments based on the number of the first information segments and a first preset value preset by the system.
  • the terminal device or the network device may determine the number of the first information segments based on the number of the second information segments and the first preset value preset by the system.
  • the first preset value may be determined by the network device.
  • the network device After the network device determines the first preset value, it may send information indicating the first preset value to the terminal device. After receiving the information, the terminal device may obtain a first preset value.
  • the first preset value may be determined by the terminal device.
  • the first preset value may be determined based on at least one of a PUSCH code rate, a modulation coding scheme (Modulation and Coding Scheme, MCS) of the PUSCH, and a frequency domain resource amount of the PUSCH.
  • MCS Modulation and Coding Scheme
  • the terminal device may determine the first preset value based on at least one of a code rate of the PUSCH, a modulation coding method of the PUSCH, and a frequency domain resource amount of the PUSCH.
  • the network device may also determine the first preset value based on at least one of a PUSCH code rate, a PUSCH modulation coding method, and a PUSCH frequency domain resource amount. After that, the network device may send an indication to the terminal device of the first preset value. Instructions. After receiving the instruction information, the terminal device may obtain a first preset value.
  • the network device or the terminal device may respectively determine the first preset value based on at least one of a PUSCH code rate, a PUSCH modulation and coding method, and a PUSCH frequency domain resource amount.
  • the method for determining the first preset value based on at least one of the PUSCH code rate, the PUSCH modulation and coding method, and the PUSCH frequency domain resource is not specifically limited in this embodiment. At least one of the PUSCH modulation coding method and the PUSCH frequency domain resource amount algorithm for determining the first preset value is covered by the protection scope of the present application.
  • the first preset value may be a positive integer. That is, the number of the second information segments is a multiple of the number of the first information segments, or the number of the first information segments is a multiple of the number of the second information segments.
  • the second preset value may be a positive integer.
  • the number of the second information segments may be determined based on the identifier of the Preamble. This operation can be implemented by a terminal device or a network device.
  • the identity of the Preamble may be carried in the first message.
  • the identifier of the Preamble may have a corresponding relationship with the number of the second information segments.
  • the terminal device or the network device may determine the number of the second information segments based on a correspondence between the identifier of the Preamble and the number of the second information segments and the identifier of the Preamble.
  • the correspondence between the identifier of the Preamble and the number of the second information segments may be a one-to-one relationship, that is, the identifier of a Preamble may correspond to the number of the second information segments.
  • the correspondence between the identifiers of the Preamble and the number of second information segments may be a many-to-one relationship, that is, the identifiers of multiple Preambles may correspond to the number of one second information segment.
  • candidate preambles are divided into N groups.
  • Each group of preambles includes multiple preambles, and each group of preambles corresponds to the number of second information segments.
  • the usable Preamble may be expressed as multiple groups, and the number of second information segments may be determined based on the data of the Preamble of each group.
  • the terminal device or network device can determine the number of second information segments based on the number of Preambles in the first group; when using the second Preamble, the terminal device or network device can determine the number of Preambles in the second group The number determines the number of second pieces of information.
  • the number of the second information segments may be determined based on a format corresponding to the Preamble. This operation can be implemented by a terminal device or a network device.
  • the format corresponding to the Preamble may be determined based on the PRACH configuration index.
  • the number of the second information segments may have a correspondence relationship with the format corresponding to the Preamble, and the terminal device or the network device may determine the number of the second information segments according to the correspondence between the number of the second information segments and the format corresponding to the Preamble. .
  • the number of the second information segments may be determined according to at least one of a code rate of the PUSCH, an MCS of the PUSCH, and a frequency domain resource amount of the PUSCH.
  • This operation can be implemented by a terminal device or a network device.
  • the lower the MCS level of the PUSCH the larger the number of second information segments.
  • the number of second information segments is 4; when the MCS level of PUSCH is 4, the number of second information segments is 2.
  • PUSCH occupies 2 resource blocks (Resource Blocks, RBs) in the frequency domain, and the number of second information segments is 2.
  • PUSCH occupies 1 RB in the frequency domain, and the number of second information segments is 4.
  • PUSCH is in the frequency domain.
  • the domain occupies 4 RBs, and the number of second information segments is 1.
  • the number of the second information segments may be preset by a standard or pre-configured by a network device.
  • the network device may determine the number of the second information segments according to a current network situation, such as a network congestion situation. After that, the network device may send configuration information to the terminal device before the terminal device sends the first message to indicate the number of the second information segment of the terminal device.
  • a current network situation such as a network congestion situation.
  • the number of second symbols occupied by the PUSCH in the time domain may be determined based on the number of first symbols occupied by the Preamble in the time domain.
  • This operation can be implemented by a terminal device or a network device.
  • the number of second symbols occupied by the PUSCH in the time domain may be determined based on the identity of the Preamble. This operation can be implemented by a terminal device or a network device.
  • the number of second symbols occupied by the PUSCH in the time domain may be determined based on a format corresponding to the Preamble. This operation can be implemented by a terminal device or a network device.
  • the number of second symbols occupied by the PUSCH in the time domain may be preset by a standard or pre-configured by a network device.
  • the number of second symbols occupied by the PUSCH in the time domain may be determined according to at least one of a code rate of the PUSCH, a modulation and coding mode of the PUSCH, and a frequency domain resource amount of the PUSCH.
  • This operation can be implemented by a terminal device or a network device.
  • the method in the embodiment of the present application may further include: the terminal device determines a random access transmission format from a plurality of random access transmission formats. At this time, the terminal device may send the first message to the network device according to the determined random access transmission format.
  • the network device may determine a random access transmission format from a plurality of random access transmission formats. Further, the network device may configure the determined random access transmission format to the terminal device.
  • the random access transmission format may represent information such as the number of symbols occupied by the Preamble or PUSCH in the time domain, the number of information segments included in each symbol, the CP length, and the interval of the Preamble or PUSCH subcarriers.
  • At least one of the following is different: the length of the first CP, the length of the second CP, the number of first symbols, the number of first information segments in the first symbol, The number of two symbols and the number of second pieces of information in the second symbol.
  • the random access transmission format may include a preamble transmission format and a PUSCH transmission format.
  • Preamble transmission format, and / or PUSCH transmission format is different, then random access transmission format is different; or random access transmission format is different, Preamble transmission format, and / or, PUSCH transmission format is different
  • FIG. 5 is a schematic diagram of three random access transmission formats.
  • different patterns represent different contents.
  • M denote the number of second symbols
  • N denote the number of second information segments
  • P denote the number of first information segments.
  • Preamble occupies a symbol in the time domain.
  • the symbol includes a first CP and a first information segment.
  • PUSCH occupies a symbol in the time domain.
  • the Preamble occupies one symbol in the time domain.
  • the symbol includes a first CP and two identical second information segments.
  • the PUSCH occupies one symbol in the time domain.
  • the symbol includes one second CP and two.
  • the Preamble occupies one symbol in the time domain.
  • the symbol includes a first CP and two identical first information segments.
  • the transmission format of the PUSCH part is the same, and the number of second information segments in the Preamble part is different, that is, the transmission format of the Preamble part is different. Therefore, the random access transmission format of the upper diagram and the middle diagram of FIG. 5 is different.
  • the transmission format of the Preamble part is the same as that of the following figure, and the number of second symbols occupied by the PUSCH in the time domain in the PUSCH part is different, that is, the transmission format of the PUSCH part is different. Therefore, the random access transmission format in the middle diagram of FIG. 5 and the lower diagram are different.
  • the transmission format of the Preamble part and the transmission format of the PUSCH part are different from each other in the upper figure of FIG. 5 and the lower figure. Therefore, the random access transmission format of the upper figure and the lower figure of FIG. 5 is different.
  • the terminal device may select a random access transmission format from a plurality of random access transmission formats.
  • the terminal device may randomly select a random access transmission format from a plurality of random access transmission formats.
  • the terminal device may select a random access transmission format from a plurality of random access transmission formats based on certain parameters.
  • the parameter may be the number of first information segments, the number of second symbols, or the number of second information segments.
  • the network device may select a random access transmission format from a plurality of random access transmission formats.
  • the network device then sends instruction information indicating the random access transmission format to the terminal device.
  • the terminal device After receiving the instruction information, the terminal device can determine the random access transmission format.
  • the random access transmission format used by the terminal device to send the first message for the current time is different from the random access transmission format used for sending the first message at least once before.
  • the number of second information segments corresponding to the random access transmission format used to send the first message at the current time may be greater than the number of second information segments corresponding to the random access transmission format used to send the first message at least once before. Quantity.
  • the random access transmission format used by the terminal device each time to send the first message may be the same.
  • the network device may send the second message to the terminal device.
  • the second message includes a random access response, the random access response carries uplink resources allocated by the network device to the terminal device, and a contention resolution message.
  • the uplink resources allocated by the network device to the terminal device can be more accurate.
  • the same message sent by the terminal device to the network device may include the random access preamble and the PUSCH, which avoids using two signalings to send the random access preamble and the PUSCH to the network device. , Which can reduce the signaling overhead of the random access process.
  • the size of the sequence numbers of the above processes does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not deal with the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the random access method according to the embodiment of the present application is described in detail above.
  • the random access device according to the embodiment of the present application will be described below with reference to FIGS. 6 to 8.
  • the technical features described in the method embodiment are applicable to the following. Device embodiment.
  • FIG. 6 shows a schematic block diagram of a terminal device 600 according to an embodiment of the present application. As shown in FIG. 6, the terminal device 600 includes:
  • the communication unit 610 is configured to send a first message to a network device.
  • the first message includes a random access preamble and uplink information.
  • the random access preamble occupies at least one first symbol in a time domain. At least one second symbol is occupied on the field, where a first symbol includes a first cyclic prefix CP and at least one first information segment, and a second symbol includes a second CP and at least one second information segment.
  • each of the at least one second symbol includes a second CP and a plurality of the same second information segments.
  • the number of the second information segments in the second symbol is determined based on the number of the first information segments in the first symbol
  • the number of second information segments in the second symbol is determined based on the identity of the random access preamble.
  • the number of second information segments in the second symbol is determined based on the format corresponding to the random access preamble; or
  • the number of second information segments in the second symbol is preset by the standard or pre-configured by the network device; or
  • the number of second information segments in the second symbol is determined according to at least one of a code rate of the uplink information, a modulation and coding scheme MCS of the uplink information, and a frequency domain resource amount of the uplink information.
  • the number of the second information segments in the second symbol is determined based on the number of the first information segments in the first symbol, where:
  • the ratio between the number of the second information segments and the number of the first information segments is a first preset value
  • the difference between the number of the second information segments and the number of the first information segments is a second preset value.
  • the number of second symbols occupied by the uplink information in the time domain is determined based on the number of first symbols occupied by the random access preamble in the time domain;
  • the number of second symbols occupied by the uplink information in the time domain is determined based on the identity of the random access preamble;
  • the number of second symbols occupied by the uplink information in the time domain is determined based on the format corresponding to the random access preamble;
  • the number of second symbols occupied by the uplink information in the time domain is preset by the standard or pre-configured by the network device; or
  • the number of second symbols occupied by the uplink information in the time domain is determined according to at least one of a code rate of the uplink information, a modulation and coding scheme MCS of the uplink information, and an amount of frequency domain resources of the uplink information.
  • the number of second symbols occupied by the uplink information in the time domain is determined based on the number of first symbols occupied by the random access preamble in the time domain, where:
  • the ratio between the number of the second symbols and the number of the first symbols is a third preset value
  • the difference between the number of the second symbols and the number of the first symbols is a fourth preset value.
  • the lengths of the first CP and the second CP are the same.
  • the length of the first CP is greater than the length of the second CP.
  • the communication unit 610 is further configured to:
  • a random access transmission format used for sending the first message at the current time is different from a random access transmission format used for sending the first message at least once before
  • At least one of the following is different: the length of the first CP, the number of second symbols occupied by uplink information in the time domain, the number of first information segments in the first symbol, and The number of second pieces of information in the second symbol.
  • the subcarrier interval of the random access preamble and the subcarrier of the uplink information are the same.
  • the uplink information includes at least one of an identifier of the terminal device 600, an SR, a BSR, and service data.
  • terminal device 600 may correspond to the terminal device in the method 400, and corresponding operations of the terminal device in the method 400 may be implemented. For brevity, details are not described herein again.
  • FIG. 7 shows a schematic block diagram of a network device 700 according to an embodiment of the present application.
  • the network device 700 includes:
  • the communication unit 710 is configured to receive a first message sent by a terminal device.
  • the first message includes a random access preamble and uplink information.
  • the random access preamble occupies at least one first symbol in a time domain, and the uplink information is in the time domain.
  • At least one second symbol is occupied, wherein a first symbol includes a first cyclic prefix CP and at least one first information segment, and a second symbol includes a second CP and at least one second information segment.
  • each of the at least one second symbol includes a second CP and a plurality of the same second information segments.
  • the number of the second information segments in the second symbol is determined based on the number of the first information segments in the first symbol
  • the number of second information segments in the second symbol is determined based on the identity of the random access preamble.
  • the number of second information segments in the second symbol is determined based on the format corresponding to the random access preamble; or
  • the number of second information segments in the second symbol is preset by the standard or pre-configured by the network device 700; or
  • the number of second information segments in the second symbol is determined according to at least one of a code rate of the uplink information, an MCS of the uplink information, and a frequency domain resource amount of the uplink information.
  • the number of the second information segments in the second symbol is determined based on the number of the first information segments in the first symbol, where:
  • the ratio between the number of the second information segments and the number of the first information segments is a first preset value
  • the difference between the number of the second information segments and the number of the first information segments is a second preset value.
  • the number of second symbols occupied by the uplink information in the time domain is determined based on the number of first symbols occupied by the random access preamble in the time domain;
  • the number of second symbols occupied by the uplink information in the time domain is determined based on the identity of the random access preamble;
  • the number of second symbols occupied by the uplink information in the time domain is determined based on the format corresponding to the random access preamble;
  • the number of second symbols occupied by the uplink information in the time domain is preset by the standard or pre-configured by the network device; or
  • the number of second symbols occupied by the uplink information in the time domain is determined according to at least one of a code rate of the uplink information, an MCS of the uplink information, and a frequency domain resource amount of the uplink information.
  • the number of second symbols occupied by the uplink information in the time domain is determined based on the number of first symbols occupied by the random access preamble in the time domain, where:
  • the ratio between the number of the second symbols and the number of the first symbols is a third preset value
  • the difference between the number of the second symbols and the number of the first symbols is a fourth preset value.
  • the lengths of the first CP and the second CP are the same.
  • the length of the first CP is greater than the length of the second CP.
  • the network device 700 may further include: a processing unit 720, configured to determine a random access transmission format from a plurality of random access transmission formats, and for different random access transmissions, The format is different from at least one of the following: the length of the first CP, the number of second symbols occupied by uplink information in the time domain, the number of first information segments in the first symbol, and the number of second information segments in the second symbol. Quantity
  • the communication unit 710 may also be used for:
  • the subcarrier interval of the random access preamble and the subcarrier of the uplink information are the same.
  • the uplink information includes at least one of a terminal equipment identifier, an SR, a BSR, and service data.
  • the network device 700 may correspond to the network device in the method 400, and corresponding operations of the network device in the method 400 may be implemented. For brevity, details are not described herein again.
  • FIG. 8 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application.
  • the communication device 800 shown in FIG. 8 includes a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 800 may further include a memory 820.
  • the processor 810 may call and run a computer program from the memory 820 to implement the method in the embodiment of the present application.
  • the memory 820 may be a separate device independent of the processor 810, or may be integrated in the processor 810.
  • the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, and specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the processor 810 may control the transceiver 830 to communicate with other devices, and specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the transceiver 830 may include a transmitter and a receiver.
  • the transceiver 830 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 800 may specifically be a network device according to an embodiment of the present application, and the communication device 800 may implement a corresponding process implemented by a network device in each method of the embodiments of the present application. .
  • the communication device 800 may specifically be a terminal device in the embodiment of the present application, and the communication device 800 may implement a corresponding process implemented by the terminal device in each method in the embodiments of the present application. For brevity, details are not described herein again. .
  • FIG. 9 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 900 shown in FIG. 9 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the chip 900 may further include a memory 920.
  • the processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.
  • the memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.
  • the chip 900 may further include an input interface 930.
  • the processor 910 may control the input interface 930 to communicate with other devices or chips. Specifically, the processor 910 may obtain information or data sent by other devices or chips.
  • the chip 900 may further include an output interface 940.
  • the processor 910 may control the output interface 940 to communicate with other devices or chips. Specifically, the processor 910 may output information or data to the other devices or chips.
  • the chip can be applied to the terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-level chip, a system chip, a chip system or a system-on-chip.
  • the processor in the embodiment of the present application may be an integrated circuit chip and has a signal processing capability.
  • each step of the foregoing method embodiment may be completed by using an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the above processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (Field, Programmable Gate Array, FPGA), or other Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • Various methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the foregoing method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory.
  • the volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchronous DRAM Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM Enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory Synchrobus RAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (Double SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct RAMbus RAM, DR RAM) and so on. That is, the memories in the embodiments of the present application are intended to include, but not limited to, these and any other suitable types of memories.
  • FIG. 10 is a schematic block diagram of a communication system 1000 according to an embodiment of the present application. As shown in FIG. 10, the communication system 1000 includes a terminal device 1010 and a network device 1020.
  • the terminal device 1010 may be used to implement the corresponding functions implemented by the terminal device in the foregoing method
  • the network device 1020 may be used to implement the corresponding functions implemented by the network device in the foregoing method.
  • details are not described herein again. .
  • An embodiment of the present application further provides a computer-readable storage medium for storing a computer program.
  • the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For simplicity, here No longer.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. No longer.
  • An embodiment of the present application further provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instruction causes the computer to execute a corresponding process implemented by the terminal device in each method in the embodiment of the present application. More details.
  • the computer program product may be applied to a network device in the embodiment of the present application, and the computer program instruction causes a computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. More details.
  • the embodiment of the present application also provides a computer program.
  • the computer program may be applied to a terminal device in the embodiment of the present application.
  • the computer program When the computer program is run on a computer, the computer is caused to execute a corresponding process implemented by the terminal device in each method in the embodiment of the present application. , Will not repeat them here.
  • the computer program may be applied to a network device in the embodiment of the present application.
  • the computer program When the computer program is run on a computer, the computer is caused to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. , Will not repeat them here.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be 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 or may not be physically separated, and the components displayed as units may or 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 objective of the solution of this embodiment.
  • 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 disk, mobile hard disk, read-only memory (Read-Only Memory) ROM, random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes .

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Abstract

一种随机接入的方法和装置,该方法包括:终端设备向网络设备发送第一消息,该第一消息包括随机接入前导码和上行信息,该随机接入前导码在时域上占用至少一个第一符号,该上行信息在时域上占用至少一个第二符号,其中,一个第一符号包括一个第一循环前缀CP和至少一个第一信息段,一个第二符号包括一个第二CP和至少一个第二信息段。本申请实施例的随机接入的方法和装置,可以减少随机接入过程的信令开销。

Description

随机接入的方法和装置 技术领域
本申请实施例涉及通信技术领域,具体涉及一种随机接入的方法和装置。
背景技术
随机接入是蜂窝系统具有的最基本的功能,它使终端设备与网络设备建立通信连接成为可能。在新无线(New Radio,NR)系统(或称5G系统、5G网络)中,采用了类似长期演进(Long Term Evolution,LTE)的四步随机接入过程,然而,传统的四步随机接入过程的信令开销比较大。
因此,如何减少随机接入过程的信令开销是亟需解决的问题。
发明内容
本申请实施例提供一种随机接入的方法和装置,可以减少随机接入过程的信令开销。
第一方面,提供了一种随机接入的方法,包括:终端设备向网络设备发送第一消息,该第一消息包括随机接入前导码和上行信息,该随机接入前导码在时域上占用至少一个第一符号,该PUSCH在时域上占用至少一个第二符号,其中,一个第一符号包括一个第一循环前缀CP和至少一个第一信息段,一个第二符号包括一个第二CP和至少一个第二信息段。
第二方面,提供了一种随机接入的方法,包括:网络设备接收终端设备发送的第一消息,该第一消息包括随机接入前导码和上行信息,该随机接入前导码在时域上占用至少一个第一符号,该PUSCH在时域上占用至少一个第二符号,其中,一个第一符号包括一个第一循环前缀CP和至少一个第一信息段,一个第二符号包括一个第二CP和至少一个第二信息段。
第三方面,提供了一种终端设备,用于执行上述第一方面或其各实现方式中的方法。
具体地,该终端设备包括用于执行上述第一方面或其各实现方式中的方法的功能模块。
第四方面,提供了一种网络设备,用于执行上述第二方面或其各实现方式中的方法。
具体地,该网络设备包括用于执行上述第二方面或其各实现方式中的方法的功能模块。
第五方面,提供了一种终端设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,执行上述第一方面或其各实现方式中的方法。
第六方面,提供了一种网络设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,执行上述第二方面或其各实现方式中的方法。
第七方面,提供了一种芯片,用于实现上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
具体地,该芯片包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有该芯片的设备执行如上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第八方面,提供了一种计算机可读存储介质,用于存储计算机程序,该计算机程序使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第九方面,提供了一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第十方面,提供了一种计算机程序,当其在计算机上运行时,使得计算机执行上述 第一方面至第二方面中的任一方面或其各实现方式中的方法。
通过上述技术方案,在随机接入过程中,终端设备向网络设备发送的同一消息中可以包括随机接入前导码和PUSCH,避免了使用两条信令向网络设备发送随机接入前导码和PUSCH,从而可以减少随机接入过程的信令开销。
附图说明
图1是本申请实施例提供的一种通信系统架构的示意性图。
图2是本申请实施例提供的一种四步随机接入方法的示意性流程图。
图3是本申请实施例提供的一种两步随机接入方法的示意性流程图。
图4是本申请实施例提供的一种随机接入的方法的示意性流程图。
图5是本申请实施例提供的多种随机接入传输格式的示意图。
图6是根据本申请实施例的终端设备的示意性框图。
图7是根据本申请实施例的网络设备的示意性框图。
图8是根据本申请实施例的通信设备的示意性框图。
图9是根据本申请实施例的芯片的示意性框图。
图10是根据本申请实施例的通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、LTE、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、NR系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum,LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum,NR-U)系统、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access,WiMAX)通信系统、无线局域网(Wireless Local Area Networks,WLAN)、无线保真(Wireless Fidelity,WiFi)、下一代通信系统或其他通信系统等。
示例性地,本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110,网络设备110可以是与终端设备120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端设备进行通信。可选地,该网络设备110可以是GSM系统或CDMA系统中的基站(Base Transceiver Station,BTS),也可以是WCDMA系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(Evolutional Node B,eNB或eNodeB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。作为在此使用的“终端设备”包括但不限于经由有线线路连接,如经由公共交换电话网络 (Public Switched Telephone Networks,PSTN)、数字用户线路(Digital Subscriber Line,DSL)、数字电缆、直接电缆连接;和/或另一数据连接/网络;和/或经由无线接口,如,针对蜂窝网络、无线局域网(Wireless Local Area Network,WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器;和/或另一终端设备的被设置成接收/发送通信信号的装置;和/或物联网(Internet of Things,IoT)设备。被设置成通过无线接口通信的终端设备可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话;可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System,PCS)终端;可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System,GPS)接收器的PDA;以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端设备可以指接入终端、用户设备(User Equipment,UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
可选地,终端设备120之间可以进行终端直连(Device to Device,D2D)通信。
图1示例性地示出了一个网络设备和两个终端设备,可选地,该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备,本申请实施例对此不做限定。
可选地,该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体,本申请实施例对此不作限定。
应理解,本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统100为例,通信设备可包括具有通信功能的网络设备110和终端设备120,网络设备110和终端设备120可以为上文所述的具体设备,此处不再赘述;通信设备还可包括通信系统100中的其他设备,例如网络控制器、移动管理实体等其他网络实体,本申请实施例中对此不做限定。
为了便于理解本申请实施例的方案,以下结合图2和图3描述基于竞争的四步随机接入过程和两步随机接入过程。
需要说明的是,本申请实施例仅以基于竞争的随机接入为例进行说明,但本申请并不限于此,本申请实施例还可以应用于基于非竞争的随机接入。
图2为四步随机接入方法的一种示意性流程图。
在210中,终端设备在随机接入信道向网络设备发送随机接入前导码(Preamble,也即message1,MSG1)。
在220中,网络设备检测到有终端设备发送的接入前导码之后,向终端设备发送随机接入响应(Random Access Response,RAR,也即message2,MSG2),以告知终端设备在发送消息3(message3,MSG3)时可以使用的上行资源信息。
其中,RAR中可以携带定时提前量(Time Alignment,TA)信息和临时无线网络临时标识(Radio Network Temporary Identifier,RNTI)。
可选地,MSG2消息可以由网络设备的媒体接入控制(Media Access Control,MAC)层产生。一条MSG2消息可以同时对应多个终端设备的随机接入请求响应。
在230中,终端设备在接收到MSG2后,判断是否属于自己的RAR消息,在判断为属于自己的RAR消息时,在MSG2指定的上行资源中发送消息3(message3,MSG3),该MSG3携带终端设备特定的临时标识信息。
在240中,网络设备在接收到MSG3消息之后,可以向终端设备发送消息4(message4, MSG4)。其中,该MSG4中包括竞争解决消息以及网络设备为终端设备分配的上行传输资源。
终端设备接收到MSG4后,可以检测在MSG3发送的特定的临时标识信息是否包含在网络设备发送的竞争解决消息中。若包含,则表明终端设备随机接入过程成功,否则认为随机过程失败,终端设备需要再次从第一步开始发起随机接入过程。
可选地,MSG4可以由网络设备的无线资源控制(Radio Resource Control)层产生。
四步随机接入过程的时延比较大,对于5G中的低时延高可靠场景是不合适的。考虑到低时延高可靠相关业务的特点,提出了两步随机接入过程的方案。在两步随机接入过程中,简单的说,相当于将四步随机接入过程的第一步和第三步合并为两步随机接入过程中的第一步,将四步随机接入过程的第二步和第四步合并为两步随机接入过程中的第二步。
图3是根据本申请实施例的两步随机接入过程的示意性图。
在310中,终端设备向网络设备发送MSG1。在该MSG1中,包括Preamble和物理上行共享信道(Physical Uplink Shared Channel,PUSCH)。其中,PUSCH可以携带终端设备特定的标识信息。
在320中,网络设备向终端设备发送随机接入响应MSG2。在该MSG2中,可以携带TA信息和临时RNTI,以及竞争解决消息,其中,竞争解决消息中可以包括终端设备的标识信息。
应理解,图3所示的方法300仅仅是两步随机接入过程的一种具体实现方式,不应对本申请的保护范围构成限定。
图4是根据本申请实施例的随机接入的方法400的示意性流程图,其中,该方法可以由终端设备执行,可以应用于方法300中的310。该方法400包括以下内容中的至少部分内容。
在410中,终端设备向网络设备发送第一消息,该第一消息可以包括承载Preamble的上行符号和承载上行信息的上行符号。其中,该410可以对应于方法300中的310。
在420中,网络设备接收终端设备发送的该第一消息。该420可以对应于方法300中的320。
其中,第一消息包括承载Preamble的上行符号和承载上行信息的上行符号可以理解为:第一消息包括Preamble和上行信息。
应理解,承载上行信息的上行符号可以是PUSCH,也可以是PUCCH,或是其他可用于传输上行信息的上行信道或上行参考信号,本申请对此并不限定。
为便于描述,在本申请实施例中,以承载上行信息的上行符号是PUSCH为例进行说明。但应理解,在不冲突的情况下,以下的PUSCH也可以直接替换为其他承载上行信息的上行信道或参考信号,例如PUCCH。
其中,Preamble在时域上占用至少一个第一符号,PUSCH在时域上占用至少一个第二符号,一个第一符号包括一个第一循环前缀(Cyclic Prefix,CP)和至少一个第一信息段,一个第二符号包括一个第二CP和至少一个第二信息段。
可选地,在本申请实施例中,第一符号中的每个符号可以包括至少一个第一CP和多个相同的第一信息段。其中,第一CP的数量小于第一信息段的数量。可选地,第一符号中的每个符号可以包括一个第一CP和多个相同的信息段。
同样地,第二符号中的每个符号可以包括至少一个第二CP和多个相同的第二信息段。其中,第二CP的数量小于第二信息段的数量。可选地,第二符号中的每个符号可以包括一个第二CP和多个相同的第二信息段。
CP的数量小于信息段的数量,如此,可以节省PUSCH传输过程中的CP开销。
应理解,第一消息包括Preamble和PUSCH可以理解为:终端设备在向网络设备发送Preamble和发送PUSCH之间,网络设备与终端设备之间没有其他消息,和/或,网络 设备可以针对Preamble和PUSCH同时向终端设备发送随机接入响应。
可选地,在本申请实施例中,相同的信息段可以表示信息段中的内容相同,且信息段的表现形式相同。也就是说,每个第一符号中的第一信息段至少可以重复一次,每个第二符号中的第二信息段至少可以重复一次。
可选地,Preamble和PUSCH频分复用(Frequency Division Multiplexing,FDM)或时分复用(Time Division Multiplexing,TDM)。
本申请实施例中,第一符号和第二符号之间可以具有多种位置关系,本申请实施例对此不做具体限定。
可选地,第一符号和第二符号在时域上可以相邻,也可以不相邻。
例如,第一符号在时域上可以在第二符号的前面。
例如,第一符号在时域上可以在第二符号的后面。
应理解,本申请实施例中的第一符号和第二符号的前后关系表示逻辑上的关系,第一符号和第二符号之间还可以有其他符号,此时,第一符号和第二符号不相邻。
可选地,第一符号和第二符号的时域位置可以相同,频域位置不同。
可选地,在PUSCH中,不同符号包括的CP数量和/或信息段的数量可以相同,也可以不同。
例如,PUSCH的第一个符号包括一个CP和两个相同的信息段,第二个符号包括一个CP和三个相同的信息段。
再例如,PUSCH的第一个符号包括两个CP和两个相同的信息段,第二个符号包括一个CP和两个相同的信息段。
再例如,PUSCH的第一个符号包括两个CP和两个相同的信息段,第二个符号包括两个CP和两个相同的信息段。
应理解,本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。
需要说明的是,当PUSCH包括多个符号时,每个符号上传输的信号可以是相同的,也可以不同,本申请实施例对此不作具体限定。
可选地,在本申请实施例中,PUSCH上承载的信息可以包括用于区分终端设备的信息,如终端设备标识、RNTI等。可选地,如果PUSCH上承载RNTI,该RNTI可以是终端设备从网络设备预配置的用于两步RACH传输的RNTI集合中选取的。
此时,PUSCH上承载的信息比特少,码率低,网络设备能正确解调的概率较大。
可选地,PUSCH上承载的信息可以包括用于区分终端设备的信息和触发物理随机接入信道(Physical Random Access Channel,PRACH)发送的事件所属的类别。其中,触发PRACH发送的事件可以包括以下几种:
终端设备需要进行初始接入。
或者,当无线链路失败后,终端设备需要重新建立RRC连接。
又或者,终端设备处于RRC连接态,需要从服务小区切换到目标小区。
又或者,终端设备处于RRC连接态,但没有实现上行链路同步,此时终端设备发送上行数据或者接收下行数据。
又或者,终端设备从RRC非激活态转换到RRC连接态。
又或者,终端设备处于RRC连接态,此时需要执行定位过程,但终端设备没有TA。
又或者,终端设备请求其他系统信息(Other System Information,OSI)。
又或者,终端设备需要进行波束(Beam)失败的恢复。
此时,可选地,终端设备可以使用多个比特用于表示触发PRACH发送的事件所属的类别。例如,可以用3个比特表示触发PRACH发送的事件所属的类别:“000”表示终端设备需要进行初始接入,“001”表示终端设备需要重新建立RRC连接,“010”表示终 端设备需要进行小区切换,……,“111”表示终端设备需要进行Beam失败的恢复。
可选地,PUSCH上承载的信息可以包括用于区分终端设备的信息、触发PRACH发送的事件所属的类别以及完成这一事件还需要传送的信息。
示例性地,对于终端设备的初始接入,可以使用3个比特“000”表示终端设备需要进行初始接入,此外,还可以使用其他比特以指示完成初始接入还需要传送的信息,如RRC层生成的RRC连接请求。
示例性地,对于连接重建,可以使用3个比特“001”表示终端设备需要重新建立RRC连接,此外,还可以使用其它比特以指示RRC层生成的RRC连接重建请求。
示例性地,对于终端设备的小区切换,可以使用3个比特“010”表示终端设备需要进行小区切换,此外,还可以使用其它比特以指示RRC层生成的RRC切换完成消息。
进一步地,PUSCH上承载的信息还可以包括但不限于调度请求(Scheduling Request,SR)、缓存状态报告(Buffer Status Report,BSR)、以及业务数据。
可选地,Preamble的子载波间隔和PUSCH的子载波间隔可以相同。
例如,Preamble的子载波间隔为15kHZ,PUSCH的子载波间隔也为15kHZ。
再例如,Preamble的子载波间隔为30kHZ,PUSCH的子载波间隔也为30kHZ。
可选地,Preamble的子载波间隔和PUSCH的子载波间隔可以不同。
例如,Preamble的子载波间隔为15kHZ,PUSCH的子载波间隔为30kHZ。
再例如,Preamble的子载波间隔为60kHZ,PUSCH的子载波间隔为30kHZ。
可选地,第一CP的长度和第二CP的长度可以相同。
此时,网络设备的处理相对简单。
可选地,当网络设备可以根据Preamble进行定时估计,并根据估计的定时对PUSCH进行处理时,第一CP的长度和第二CP的长度可以不同。如第一CP的长度可以大于第二CP的长度。
在一种实现方式中,第二信息段的数量可以是基于第一信息段的数量确定的。
对于终端侧而言,终端设备在确定了第一信息段的数量之后,可以基于第一信息段的数量得到第二信息段的数量。
对于网络侧而言,可以预先知道第一信息段的数量,或者也可以在接收到preamble之后,得知第一信息段的数量,并基于第一信息段的数量,确定第二信息段的数量。
或者,第一信息段的数量可以是基于第二信息段的数量确定的。
对于终端侧而言,终端设备在确定了第二信息段的数量之后,可以基于第二信息段的数量得到第一信息段的数量。
对于网络侧而言,可以预先知道第二信息段的数量,或者也可以在接收到上行信息之后,得知第二信息段的数量,并基于第二信息段的数量,确定第一信息段的数量。
作为一种示例,第一信息段的数量与第二信息段的数量之间的比值为第一预设值,可以理解为:第二信息段的数量/第一信息段的数量=第一预设值,或第一信息段的数量/第二信息段的数量=第一预设值。
可选地,第一预设值可以是系统预设的。
当第一信息段的数量已知时,终端设备或网络设备可以基于第一信息段的数量和系统预设的第一预设值,确定第二信息段的数量。
或者,当第二信息段的数量已知时,终端设备或网络设备可以基于第二信息段的数量和系统预设的第一预设值,确定第一信息段的数量。
可选地,第一预设值可以是网络设备确定的。
网络设备确定第一预设值后,可以向终端设备发送指示该第一预设值的信息。终端设备接收到该信息后,可以获取第一预设值。
可选地,第一预设值可以是终端设备确定的。
可选地,第一预设值可以是基于PUSCH的码率、PUSCH的调制编码方式(Modulation  and Coding Scheme,MCS)和PUSCH的频域资源量中的至少一个确定的。
其中,终端设备可以基于PUSCH的码率、PUSCH的调制编码方式和PUSCH的频域资源量中的至少一个确定第一预设值。
当然,网络设备也可以基于PUSCH的码率、PUSCH的调制编码方式和PUSCH的频域资源量中的至少一个确定第一预设值,之后,网络设备可以向终端设备发送指示第一预设值的指示信息。终端设备接收到该指示信息后,可以获取第一预设值。
或者,网络设备或终端设备可以各自分别基于PUSCH的码率、PUSCH的调制编码方式和PUSCH的频域资源量中的至少一个确定第一预设值。
应理解,本申请实施例对基于PUSCH的码率、PUSCH的调制编码方式和PUSCH的频域资源量中的至少一个确定第一预设值的方法不作具体限定,任何可以基于PUSCH的码率、PUSCH的调制编码方式和PUSCH的频域资源量中的至少一个确定第一预设值的算法都涵盖在本申请的保护范围之内。
在一种示例中,该第一预设值可以正整数。即第二信息段的数量是第一信息段数量的倍数,或第一信息段的数量是第二信息段数量的倍数。
例如,第一预设值可以为1,令第一信息段的数量为P,第二信息段的数量为N,则N=P。
例如,第一预设值可以为2,即N=2*P,或P=2*N。
作为一种示例,第二信息段的数量与第一信息段的数量之间的差值为第二预设值,可以理解为:第二信息段的数量-第一信息段的数量=第二预设值,或,第一信息段的数量-第二信息段的数量=第二预设值。
在一种示例中,该第二预设值可以为正整数。
例如,第二预设值可以为1,令第一信息段的数量为P,第二信息段的数量为N,则N=P-1,或P=N-1。
需要说明的是,第二预设值的确定方式可以参考第一预设值的确定方式,为了内容的简洁,此处不再赘述。
在一种实现方式中,第二信息段的数量可以是基于Preamble的标识确定的。该操作可以由终端设备实现,也可以由网络设备实现。
可选地,Preamble的标识可以携带在第一消息中。
可选地,Preamble的标识可以与第二信息段的数量具有对应关系。终端设备或网络设备可以基于Preamble的标识与第二信息段的数量的对应关系和Preamble的标识,确定第二信息段的数量。
其中,Preamble的标识与第二信息段的数量的对应关系可以是一对一的关系,即一个Preamble的标识可对应一个第二信息段的数量。
或者,Preamble的标识与第二信息段的数量的对应关系可以是多对一的关系,即多个Preamble的标识可对应一个第二信息段的数量。
例如,候选Preamble被分为N组,每组Preamble中包括多个Preamble,每组Preamble对应一个第二信息段的数量。
Preamble的标识与第二信息段的对应关系的确定可以参考第一预设值的确定方式,这里,为了避免赘述,省略其详细说明。
可选地,可使用的Preamble可以表示为多个组,第二信息段的数量可以基于每个组的Preamble的数据确定。
例如,可使用的Preamble共有3个,第一个Preamble和第三个Preamble表示为第一组,第二个Preamble表示为第二组。当使用第一个Preamble时,终端设备或网络设备可以根据第一组的Preamble的数量确定第二信息段的数量;当使用第二个Preamble时,终端设备或网络设备可以根据第二组的Preamble的数量确定第二信息段的数量。
在一种实现方式中,第二信息段的数量可以是基于Preamble对应的格式确定的。该 操作可以由终端设备实现,也可以由网络设备实现。
可选地,Preamble对应的格式的可以是基于PRACH配置索引确定的。
可选地,第二信息段的数量可以和Preamble对应的格式具有对应关系,终端设备或网络设备可以根据第二信息段的数量和Preamble对应的格式之间的对应关系确定第二信息段的数量。
在一种实现方式中,第二信息段的数量是可以是根据PUSCH的码率、PUSCH的MCS和PUSCH的频域资源量中的至少一个确定的。该操作可以由终端设备实现,也可以由网络设备实现。
可选地,PUSCH的码率越小,第二信息段的数量越多。
可选地,PUSCH的MCS的等级越小,第二信息段的数量越多。
例如,PUSCH的MCS的等级为2时,第二信息段的数量为4;PUSCH的MCS的等级为4时,第二信息段的数量为2.
可选地,PUSCH的频域资源量越小,第二信息段的数量越多。
例如,PUSCH在频域上占用2个资源块(Resource Block,RB),第二信息段的数量为2;PUSCH在频域上占用1个RB,第二信息段的数量为4;PUSCH在频域上占用4个RB,第二信息段的数量为1。
在一种实现方式中,第二信息段的数量可以是标准预设的或网络设备预先配置的。
可选地,网络设备可以根据当前的网络情况,如网络拥堵情况,确定第二信息段的数量。之后,网络设备可以在终端设备发送第一消息之前,向终端设备发送配置信息,以指示终端设备第二信息段的数量。
应理解,第一信息段的数量的确定方式可以参考第二信息段的数量的确定方式,此处不做过多描述。
在本申请实施例中,在一种实现方式中,PUSCH在时域上占用的第二符号的数量可以是基于Preamble在时域上占用的第一符号的数量确定的。该操作可以由终端设备实现,也可以由网络设备实现。
作为一种示例,第二符号的数量与第一符号的数量之间的比值为第三预设值,可以理解为:第二符号的数量/第一符号的数量=第三预设值,或,第一符号的数量/第二符号的数量=第三预设值。
作为一种示例,第二符号的数量与第一符号的数量之间的差值为第四预设值,可以理解为:第二符号的数量-第一符号的数量=第四预设值,或第一符号的数量-第二符号的数量=第四预设值。
在一种实现方式中,PUSCH在时域上占用的第二符号的数量可以是基于Preamble的标识确定的。该操作可以由终端设备实现,也可以由网络设备实现。
在一种实现方式中,PUSCH在时域上占用的第二符号的数量可以是基于Preamble对应的格式确定的。该操作可以由终端设备实现,也可以由网络设备实现。
在一种实现方式中,PUSCH在时域上占用的第二符号的数量可以是标准预设的或网络设备预先配置的。
在一种实现方式中,PUSCH在时域上占用的第二符号的数量可以是根据PUSCH的码率、PUSCH的调制编码方式和PUSCH的频域资源量中的至少一个确定。该操作可以由终端设备实现,也可以由网络设备实现。
应理解,以上虽然分别描述了第二信息段数量的确定方式和第二符号的数量的确定方式,但是并不意味着第二信息段数量的确定方式和第二符号的数量的确定方式是独立的,第二符号的数量的确定方式可以参考第二信息段的确定方式,当然,第一符号的数量的确定方式也可以参考第二信息段的确定方式。
作为一种可能的实施例,本申请实施例的方法还可以包括:终端设备从多个随机接入传输格式中确定随机接入传输格式。此时,终端设备可以根据确定的随机接入传输格 式,向网络设备发送第一消息。
或者,网络设备也可以从多个随机接入传输格式中确定随机接入传输格式。并且进一步地,网络设备可以向终端设备配置确定的随机接入传输格式。
可选地,随机接入传输格式可以表示Preamble或PUSCH在时域上占用的符号数量、每个符号包括的信息段的数量和CP长度、Preamble或PUSCH子载波间隔等信息。
其中,针对不同的随机接入传输格式,以下中的至少一种不同:第一CP的长度、第二CP的长度、第一符号的数量和第一符号中的第一信息段的数量、第二符号的数量和第二符号中第二信息段的数量。
可选地,在本申请实施例中,随机接入传输格式可以包括Preamble的传输格式和PUSCH的传输格式。Preamble的传输格式,和/或,PUSCH的传输格式不同,则随机接入传输格式不同;或随机接入传输格式不同,Preamble的传输格式,和/或,PUSCH的传输格式不同
图5是3种随机接入传输格式的示意图。在图5中,不同的图案表示不同内容。令M表示第二符号的数量,N表示第二信息段的数量,P表示第一信息段的数量。
上图中,Preamble在时域上占用一个符号,该符号包括一个第一CP和一个第一信息段,PUSCH在时域上占用一个符号,该符号包括一个第二CP和两个相同的第二信息段,即M=1,N=2,P=1。中间的图中,Preamble在时域上占用一个符号,该符号包括一个第一CP和两个相同的第二信息段,PUSCH在时域上占用一个符号,该符号包括一个第二CP和两个相同的第二信息段,即M=1,N=2,P=2。下图中,Preamble在时域上占用一个符号,该符号包括一个第一CP和两个相同的第一信息段,PUSCH在时域上占用两个符号,每个符号都包括一个第二CP和两个相同的信息段,即M=2,N=2,P=2。应理解,不同的符号上可以传输不同的信息,同一个符号的多个信息段传输相同的信息。
可以看到,在图5的上图和中间的图中,PUSCH部分的传输格式相同,Preamble部分中第二信息段的数量不同,也就是Preamble部分的传输格式不同。因此,图5的上图和中间的图的随机接入传输格式不同。
还可以看到,图5的中间的图和下图相比,Preamble部分的传输格式相同,PUSCH部分中PUSCH在时域上占用的第二符号的数量不同,也就是PUSCH部分的传输格式不同。因此,图5的中间的图和下图的随机接入传输格式不同。
还可以看到,图5的上图和下图相比,Preamble部分的传输格式和PUSCH部分的传输格式都不同,因此,图5的上图和下图的随机接入传输格式不同。
作为一种示例,终端设备可以从多个随机接入传输格式中,选择随机接入传输格式。
可选地,终端设备可以从多个随机接入传输格式中,随机选择一个随机接入传输格式。
可选地,终端设备可以基于一定的参数,从多个随机接入传输格式中,选择一个随机接入传输格式。比如,该参数可以为第一信息段的数量、第二符号的数量或第二信息段的数量等。
作为一种示例,网络设备可以从多个随机接入传输格式中,选择随机接入传输格式。然后网络设备向终端设备发送指示随机接入传输格式的指示信息,终端设备接收到该指示信息后,可以确定随机接入传输格式。
作为一种可能的实施例,终端设备当前次发送第一消息所采用的随机接入传输格式和之前至少一次发送第一消息所采用的随机接入传输格式不同。
可选地,当前次发送第一消息所采用的随机接入传输格式对应的第二信息段的数量可以大于之前至少一次发送第一消息所采用的随机接入传输格式对应的第二信息段的数量。
作为一种可能的实施例,终端设备每次发送第一消息所采用的随机接入传输格式可以都相同。
在网络设备接收到终端设备发送的第一消息后,网络设备可以向终端设备发送第二消息。
其中,第二消息包括随机接入响应,随机接入响应中携带网络设备为终端设备分配的上行资源,以及竞争解决消息。
应理解,若PUSCH上承载的信息包括用于区分终端设备的信息和触发PRACH发送的事件所属的类别时,网络设备为终端设备分配的上行资源可以更精确。
需要说明的是,本申请实施例的技术方案也可以应用于四步随机接入过程中,具体实现方式可以参考上述两步随机接入的实现方式,这里,不再进行赘述。
本申请实施例,在随机接入过程中,终端设备向网络设备发送的同一消息中可以包括随机接入前导码和PUSCH,避免了使用两条信令向网络设备发送随机接入前导码和PUSCH,从而可以减少随机接入过程的信令开销。
应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
上文中详细描述了根据本申请实施例的随机接入的方法,下面将结合图6至图8,描述根据本申请实施例的随机接入的装置,方法实施例所描述的技术特征适用于以下装置实施例。
图6示出了本申请实施例的终端设备600的示意性框图。如图6所示,该终端设备600包括:
通信单元610,用于向网络设备发送第一消息,该第一消息包括随机接入前导码和上行信息,该随机接入前导码在时域上占用至少一个第一符号,该上行信息在时域上占用至少一个第二符号,其中,一个第一符号包括一个第一循环前缀CP和至少一个第一信息段,一个第二符号包括一个第二CP和至少一个第二信息段。
可选地,在本申请实施例中,该至少一个第二符号中的每个符号包括一个第二CP和多个相同的第二信息段。
可选地,在本申请实施例中,该第二符号中第二信息段的数量是基于第一符号中第一信息段的数量确定的;或
第二符号中第二信息段的数量是基于随机接入前导码的标识确定的;或
第二符号中第二信息段的数量是基于随机接入前导码对应的格式确定的;或
第二符号中第二信息段的数量是标准预设的或网络设备预先配置的;或
第二符号中第二信息段的数量是根据上行信息的码率、上行信息的调制编码方式MCS和上行信息的频域资源量中的至少一个确定的。
可选地,在本申请实施例中,第二符号中第二信息段的数量是基于第一符号中第一信息段的数量确定的,其中,
第二信息段的数量与第一信息段的数量之间的比值为第一预设值;或
第二信息段的数量与第一信息段的数量之间的差值为第二预设值。
可选地,在本申请实施例中,上行信息在时域上占用的第二符号的数量是基于随机接入前导码在时域上占用的第一符号的数量确定的;或
上行信息在时域上占用的第二符号的数量是基于随机接入前导码的标识确定的;或
上行信息在时域上占用的第二符号的数量是基于随机接入前导码对应的格式确定的;或
上行信息在时域上占用的第二符号的数量是标准预设的或网络设备预先配置的;或
上行信息在时域上占用的第二符号的数量是根据上行信息的码率、上行信息的调制编码方式MCS和上行信息的频域资源量中的至少一个确定的。
可选地,在本申请实施例中,上行信息在时域上占用的第二符号的数量是基于随机接入前导码在时域上占用的第一符号的数量确定的,其中,
第二符号的数量与第一符号的数量之间的比值为第三预设值;或
第二符号的数量与第一符号的数量之间的差值为第四预设值。
可选地,在本申请实施例中,第一CP和第二CP的长度相同。
可选地,在本申请实施例中,第一CP的长度大于第二CP的长度。
可选地,在本申请实施例中,该终端设备600还可以包括:处理单元620,用于从多个随机接入传输格式中确定随机接入传输格式,其中,针对不同的随机接入传输格式,以下中的至少一种不同:第一CP的长度、上行信息在时域上占用的第二符号的数量、第一符号中第一信息段的数量和第二符号中第二信息段的数量;
该通信单元610进一步用于:
根据确定的随机接入传输格式,向网络设备发送第一消息。
可选地,在本申请实施例中,当前次发送第一消息所采用的随机接入传输格式和之前至少一次发送第一消息所采用的随机接入传输格式不同,
其中,针对不同的随机接入传输格式,以下中的至少一种不同:第一CP的长度、上行信息在时域上占用的第二符号的数量、第一符号中第一信息段的数量和第二符号中第二信息段的数量。
可选地,在本申请实施例中,随机接入前导码的子载波间隔和上行信息的子载波相同。
可选地,在本申请实施例中,上行信息包括该终端设备600标识、SR、BSR和业务数据中的至少一种。
应理解,该终端设备600可对应于方法400中的终端设备,可以实现该方法400中的终端设备的相应操作,为了简洁,在此不再赘述。
图7示出了本申请实施例的网络设备700的示意性框图。如图7所示,该网络设备700包括:
通信单元710,用于接收终端设备发送的第一消息,该第一消息包括随机接入前导码和上行信息,随机接入前导码在时域上占用至少一个第一符号,上行信息在时域上占用至少一个第二符号,其中,一个第一符号包括一个第一循环前缀CP和至少一个第一信息段,一个第二符号包括一个第二CP和至少一个第二信息段。
可选地,在本申请实施例中,至少一个第二符号中的每个符号包括一个第二CP和多个相同的第二信息段。
可选地,在本申请实施例中,第二符号中第二信息段的数量是基于第一符号中第一信息段的数量确定的;或
第二符号中第二信息段的数量是基于随机接入前导码的标识确定的;或
第二符号中第二信息段的数量是基于随机接入前导码对应的格式确定的;或
第二符号中第二信息段的数量是标准预设的或该网络设备700预先配置的;或
第二符号中第二信息段的数量是根据上行信息的码率、上行信息的MCS和上行信息的频域资源量中的至少一个确定的。
可选地,在本申请实施例中,第二符号中第二信息段的数量是基于第一符号中第一信息段的数量确定的,其中,
第二信息段的数量与第一信息段的数量之间的比值为第一预设值;或
第二信息段的数量与第一信息段的数量之间的差值为第二预设值。
可选地,在本申请实施例中,上行信息在时域上占用的第二符号的数量是基于随机接入前导码在时域上占用的第一符号的数量确定的;或
上行信息在时域上占用的第二符号的数量是基于随机接入前导码的标识确定的;或
上行信息在时域上占用的第二符号的数量是基于随机接入前导码对应的格式确定的;或
上行信息在时域上占用的第二符号的数量是标准预设的或网络设备预先配置的;或
上行信息在时域上占用的第二符号的数量是根据上行信息的码率、上行信息的MCS和上行信息的频域资源量中的至少一个确定的。
可选地,在本申请实施例中,上行信息在时域上占用的第二符号的数量是基于随机接入前导码在时域上占用的第一符号的数量确定的,其中,
第二符号的数量与第一符号的数量之间的比值为第三预设值;或
第二符号的数量与第一符号的数量之间的差值为第四预设值。
可选地,在本申请实施例中,第一CP和第二CP的长度相同。
可选地,在本申请实施例中,第一CP的长度大于所述第二CP的长度。
可选地,在本申请实施例中,该网络设备700还可以包括:处理单元720,用于从多个随机接入传输格式中确定随机接入传输格式,其中,针对不同的随机接入传输格式,以下中的至少一种不同:第一CP的长度、上行信息在时域上占用的第二符号的数量、第一符号中第一信息段的数量和第二符号中第二信息段的数量;
该通信单元710还可以用于:
向终端设备发送配置信息,该配置信息包括确定的随机接入传输格式。
可选地,在本申请实施例中,随机接入前导码的子载波间隔和上行信息的子载波相同。
可选地,在本申请实施例中,上行信息包括终端设备标识、SR、BSR和业务数据中的至少一种。
应理解,该网络设备700可对应于方法400中的网络设备,可以实现该方法400中的网络设备的相应操作,为了简洁,在此不再赘述。
图8是本申请实施例提供的一种通信设备800示意性结构图。图8所示的通信设备800包括处理器810,处理器810可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
可选地,如图8所示,通信设备800还可以包括存储器820。其中,处理器810可以从存储器820中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器820可以是独立于处理器810的一个单独的器件,也可以集成在处理器810中。
可选地,如图8所示,通信设备800还可以包括收发器830,处理器810可以控制该收发器830与其他设备进行通信,具体地,可以向其他设备发送信息或数据,或接收其他设备发送的信息或数据。
其中,收发器830可以包括发射机和接收机。收发器830还可以进一步包括天线,天线的数量可以为一个或多个。
可选地,该通信设备800具体可为本申请实施例的网络设备,并且该通信设备800可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该通信设备800具体可为本申请实施例的终端设备,并且该通信设备800可以实现本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
图9是本申请实施例的芯片的示意性结构图。图9所示的芯片900包括处理器910,处理器910可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
可选地,如图9所示,芯片900还可以包括存储器920。其中,处理器910可以从存储器920中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器920可以是独立于处理器910的一个单独的器件,也可以集成在处理器910中。
可选地,该芯片900还可以包括输入接口930。其中,处理器910可以控制该输入接口930与其他设备或芯片进行通信,具体地,可以获取其他设备或芯片发送的信息或数 据。
可选地,该芯片900还可以包括输出接口940。其中,处理器910可以控制该输出接口940与其他设备或芯片进行通信,具体地,可以向其他设备或芯片输出信息或数据。
可选地,该芯片可应用于本申请实施例中的终端设备,并且该芯片可以实现本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该芯片可应用于本申请实施例中的网络设备,并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
应理解,本申请实施例的处理器可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
可以理解,本申请实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)。应注意,本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解,上述存储器为示例性但不是限制性说明,例如,本申请实施例中的存储器还可以是静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)等等。也就是说,本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
图10是本申请实施例提供的一种通信系统1000的示意性框图。如图10所示,该通信系统1000包括终端设备1010和网络设备1020。
其中,该终端设备1010可以用于实现上述方法中由终端设备实现的相应的功能,以及该网络设备1020可以用于实现上述方法中由网络设备实现的相应的功能为了简洁,在 此不再赘述。
本申请实施例还提供了一种计算机可读存储介质,用于存储计算机程序。
可选地,该计算机可读存储介质可应用于本申请实施例中的终端设备,并且该计算机程序使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该计算机可读存储介质可应用于本申请实施例中的网络设备,并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
本申请实施例还提供了一种计算机程序产品,包括计算机程序指令。
可选地,该计算机程序产品可应用于本申请实施例中的终端设备,并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该计算机程序产品可应用于本申请实施例中的网络设备,并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选地,该计算机程序可应用于本申请实施例中的终端设备,当该计算机程序在计算机上运行时,使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
可选的,该计算机程序可应用于本申请实施例中的网络设备,当该计算机程序在计算机上运行时,使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
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。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部 分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,)ROM、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
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所述以权利要求的保护范围为准。

Claims (56)

  1. 一种随机接入的方法,其特征在于,包括:
    终端设备向网络设备发送第一消息,所述第一消息包括随机接入前导码和上行信息,所述随机接入前导码在时域上占用至少一个第一符号,所述上行信息在时域上占用至少一个第二符号,其中,一个第一符号包括一个第一循环前缀CP和至少一个第一信息段,一个第二符号包括一个第二CP和至少一个第二信息段。
  2. 根据权利要求1所述的方法,其特征在于,所述至少一个第二符号中的每个符号包括一个所述第二CP和多个相同的所述第二信息段。
  3. 根据权利要求1或2所述的方法,其特征在于,所述第二符号中所述第二信息段的数量是基于所述第一符号中所述第一信息段的数量确定的;或
    所述第二符号中所述第二信息段的数量是基于所述随机接入前导码的标识确定的;或
    所述第二符号中所述第二信息段的数量是基于所述随机接入前导码对应的格式确定的;或
    所述第二符号中所述第二信息段的数量是标准预设的或所述网络设备预先配置的;或
    所述第二符号中所述第二信息段的数量是根据所述上行信息的码率、所述上行信息的调制编码方式MCS和所述上行信息的频域资源量中的至少一个确定的。
  4. 根据权利要求3所述的方法,其特征在于,所述第二符号中所述第二信息段的数量是基于所述第一符号中所述第一信息段的数量确定的,其中,
    所述第二信息段的数量与所述第一信息段的数量之间的比值为第一预设值;或
    所述第二信息段的数量与所述第一信息段的数量之间的差值为第二预设值。
  5. 根据权利要求1至4中任一项所述的方法,其特征在于,所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码在时域上占用的所述第一符号的数量确定的;或
    所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码的标识确定的;或
    所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码对应的格式确定的;或
    所述上行信息在时域上占用的所述第二符号的数量是标准预设的或网络设备预先配置的;或
    所述上行信息在时域上占用的所述第二符号的数量是根据所述上行信息的码率、所述上行信息的调制编码方式MCS和所述上行信息的频域资源量中的至少一个确定的。
  6. 根据权利要求5所述的方法,其特征在于,所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码在时域上占用的所述第一符号的数量确定的,其中,
    所述第二符号的数量与所述第一符号的数量之间的比值为第三预设值;或
    所述第二符号的数量与所述第一符号的数量之间的差值为第四预设值。
  7. 根据权利要求1至6中任一项所述的方法,其特征在于,所述第一CP和所述第二CP的长度相同。
  8. 根据权利要求1至6中任一项所述的方法,其特征在于,所述第一CP的长度大于所述第二CP的长度。
  9. 根据权利要求1至8中任一项所述的方法,其特征在于,所述方法还包括:
    所述终端设备从多个随机接入传输格式中确定随机接入传输格式,其中,针对不同的随机接入传输格式,以下中的至少一种不同:所述第一CP的长度、所述上行信息在时 域上占用的所述第二符号的数量、所述第一符号中所述第一信息段的数量和所述第二符号中所述第二信息段的数量;
    终端设备向网络设备发送第一消息,包括:
    所述终端设备根据确定的所述随机接入传输格式,向所述网络设备发送所述第一消息。
  10. 根据权利要求1至9中任一项所述的方法,其特征在于,所述终端设备当前次发送第一消息所采用的随机接入传输格式和之前至少一次发送第一消息所采用的随机接入传输格式不同,
    其中,针对不同的随机接入传输格式,以下中的至少一种不同:所述第一CP的长度、所述上行信息在时域上占用的所述第二符号的数量、所述第一符号中所述第一信息段的数量和所述第二符号中所述第二信息段的数量。
  11. 根据权利要求1至10中任一项所述的方法,其特征在于,所述随机接入前导码的子载波间隔和所述上行信息的子载波相同。
  12. 根据权利要求1至11中任一项所述的方法,其特征在于,所述上行信息包括所述终端设备标识、触发所述PRACH发送的事件所属的类别、调度请求SR、缓存状态报告BSR和业务数据中的至少一种。
  13. 一种随机接入的方法,其特征在于,包括:
    网络设备接收终端设备发送的第一消息,所述第一消息包括随机接入前导码和上行信息,所述随机接入前导码在时域上占用至少一个第一符号,所述上行信息在时域上占用至少一个第二符号,其中,一个第一符号包括一个第一循环前缀CP和至少一个第一信息段,一个第二符号包括一个第二CP和至少一个第二信息段。
  14. 根据权利要求13所述的方法,其特征在于,所述至少一个第二符号中的每个符号包括一个所述第二CP和多个相同的所述第二信息段。
  15. 根据权利要求13或14所述的方法,其特征在于,所述第二符号中所述第二信息段的数量是基于所述第一符号中所述第一信息段的数量确定的;或
    所述第二符号中所述第二信息段的数量是基于所述随机接入前导码的标识确定的;或
    所述第二符号中所述第二信息段的数量是基于所述随机接入前导码对应的格式确定的;或
    所述第二符号中所述第二信息段的数量是根据所述上行信息的码率、所述上行信息的调制编码方式MCS和所述上行信息的频域资源量中的至少一个确定的。
  16. 根据权利要求15所述的方法,其特征在于,所述第二符号中所述第二信息段的数量是基于所述第一符号中所述第一信息段的数量确定的,其中,
    所述第二信息段的数量与所述第一信息段的数量之间的比值为第一预设值;或
    所述第二信息段的数量与所述第一信息段的数量之间的差值为第二预设值。
  17. 根据权利要求13至16中任一项所述的方法,其特征在于,所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码在时域上占用的所述第一符号的数量确定的;或
    所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码的标识确定的;或
    所述上行信息在时域上占用的所述第二符号的数量是根据所述上行信息的码率、所述上行信息的调制编码方式MCS和所述上行信息的频域资源量中的至少一个确定的。
  18. 根据权利要求17所述的方法,其特征在于,所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码在时域上占用的所述第一符号的数量确定的,其中,
    所述第二符号的数量与所述第一符号的数量之间的比值为第三预设值;或
    所述第二符号的数量与所述第一符号的数量之间的差值为第四预设值。
  19. 根据权利要求13至18中任一项所述的方法,其特征在于,所述第一CP和所述第二CP的长度相同。
  20. 根据权利要求13至18中任一项所述的方法,其特征在于,所述第一CP的长度大于所述第二CP的长度。
  21. 根据权利要求13至20中任一项所述的方法,其特征在于,所述方法还包括:
    所述网络设备从多个随机接入传输格式中确定随机接入传输格式,其中,针对不同的随机接入传输格式,以下中的至少一种不同:所述第一CP的长度、所述上行信息在时域上占用的所述第二符号的数量、所述第一符号中所述第一信息段的数量和所述第二符号中所述第二信息段的数量;
    所述网络设备向所述终端设备发送配置信息,所述配置信息包括确定的所述随机接入传输格式。
  22. 根据权利要求13至21中任一项所述的方法,其特征在于,所述随机接入前导码的子载波间隔和所述上行信息的子载波相同。
  23. 根据权利要求13至22中任一项所述的方法,其特征在于,所述上行信息包括所述终端设备标识、触发所述PRACH发送的事件所属的类别、调度请求SR、缓存状态报告BSR和业务数据中的至少一种。
  24. 一种终端设备,其特征在于,包括:
    通信单元,用于向网络设备发送第一消息,所述第一消息包括随机接入前导码和上行信息,所述随机接入前导码在时域上占用至少一个第一符号,所述上行信息在时域上占用至少一个第二符号,其中,一个第一符号包括一个第一循环前缀CP和至少一个第一信息段,一个第二符号包括一个第二CP和至少一个第二信息段。
  25. 根据权利要求24所述的终端设备,其特征在于,所述至少一个第二符号中的每个符号包括一个所述第二CP和多个相同的所述第二信息段。
  26. 根据权利要求24或25所述的终端设备,其特征在于,所述第二符号中所述第二信息段的数量是基于所述第一符号中所述第一信息段的数量确定的;或
    所述第二符号中所述第二信息段的数量是基于所述随机接入前导码的标识确定的;或
    所述第二符号中所述第二信息段的数量是基于所述随机接入前导码对应的格式确定的;或
    所述第二符号中所述第二信息段的数量是标准预设的或所述网络设备预先配置的;或
    所述第二符号中所述第二信息段的数量是根据所述上行信息的码率、所述上行信息的调制编码方式MCS和所述上行信息的频域资源量中的至少一个确定的。
  27. 根据权利要求26所述的终端设备,其特征在于,所述第二符号中所述第二信息段的数量是基于所述第一符号中所述第一信息段的数量确定的,其中,
    所述第二信息段的数量与所述第一信息段的数量之间的比值为第一预设值;或
    所述第二信息段的数量与所述第一信息段的数量之间的差值为第二预设值。
  28. 根据权利要求24至27中任一项所述的终端设备,其特征在于,所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码在时域上占用的所述第一符号的数量确定的;或
    所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码的标识确定的;或
    所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码对应的格式确定的;或
    所述上行信息在时域上占用的所述第二符号的数量是标准预设的或网络设备预先配 置的;或
    所述上行信息在时域上占用的所述第二符号的数量是根据所述上行信息的码率、所述上行信息的调制编码方式MCS和所述上行信息的频域资源量中的至少一个确定的。
  29. 根据权利要求28所述的终端设备,其特征在于,所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码在时域上占用的所述第一符号的数量确定的,其中,
    所述第二符号的数量与所述第一符号的数量之间的比值为第三预设值;或
    所述第二符号的数量与所述第一符号的数量之间的差值为第四预设值。
  30. 根据权利要求24至29中任一项所述的终端设备,其特征在于,所述第一CP和所述第二CP的长度相同。
  31. 根据权利要求24至29中任一项所述的终端设备,其特征在于,所述第一CP的长度大于所述第二CP的长度。
  32. 根据权利要求24至31中任一项所述的终端设备,其特征在于,所述终端设备还包括:
    处理单元,用于从多个随机接入传输格式中确定随机接入传输格式,其中,针对不同的随机接入传输格式,以下中的至少一种不同:所述第一CP的长度、所述上行信息在时域上占用的所述第二符号的数量、所述第一符号中所述第一信息段的数量和所述第二符号中所述第二信息段的数量;
    所述通信单元进一步用于:
    根据确定的所述随机接入传输格式,向所述网络设备发送所述第一消息。
  33. 根据权利要求24至32中任一项所述的终端设备,其特征在于,当前次发送第一消息所采用的随机接入传输格式和之前至少一次发送第一消息所采用的随机接入传输格式不同,
    其中,针对不同的随机接入传输格式,以下中的至少一种不同:所述第一CP的长度、所述上行信息在时域上占用的所述第二符号的数量、所述第一符号中所述第一信息段的数量和所述第二符号中所述第二信息段的数量。
  34. 根据权利要求24至33中任一项所述的终端设备,其特征在于,所述随机接入前导码的子载波间隔和所述上行信息的子载波相同。
  35. 根据权利要求24至34中任一项所述的终端设备,其特征在于,所述上行信息包括所述终端设备标识、触发所述PRACH发送的事件所属的类别、调度请求SR、缓存状态报告BSR和业务数据中的至少一种。
  36. 一种网络设备,其特征在于,包括:
    通信单元,用于接收终端设备发送的第一消息,所述第一消息包括随机接入前导码和上行信息,所述随机接入前导码在时域上占用至少一个第一符号,所述上行信息在时域上占用至少一个第二符号,其中,一个第一符号包括一个第一循环前缀CP和至少一个第一信息段,一个第二符号包括一个第二CP和至少一个第二信息段。
  37. 根据权利要求36所述的网络设备,其特征在于,所述至少一个第二符号中的每个符号包括一个所述第二CP和多个相同的所述第二信息段。
  38. 根据权利要求36或37所述的网络设备,其特征在于,所述第二符号中所述第二信息段的数量是基于所述第一符号中所述第一信息段的数量确定的;或
    所述第二符号中所述第二信息段的数量是基于所述随机接入前导码的标识确定的;或
    所述第二符号中所述第二信息段的数量是基于所述随机接入前导码对应的格式确定的;或
    所述第二符号中所述第二信息段的数量是根据所述上行信息的码率、所述上行信息的调制编码方式MCS和所述上行信息的频域资源量中的至少一个确定的。
  39. 根据权利要求38所述的网络设备,其特征在于,所述第二符号中所述第二信息段的数量是基于所述第一符号中所述第一信息段的数量确定的,其中,
    所述第二信息段的数量与所述第一信息段的数量之间的比值为第一预设值;或
    所述第二信息段的数量与所述第一信息段的数量之间的差值为第二预设值。
  40. 根据权利要求36至39中任一项所述的网络设备,其特征在于,所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码在时域上占用的所述第一符号的数量确定的;或
    所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码的标识确定的;或
    所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码对应的格式确定的;或
    所述上行信息在时域上占用的所述第二符号的数量是根据所述上行信息的码率、所述上行信息的调制编码方式MCS和所述上行信息的频域资源量中的至少一个确定的。
  41. 根据权利要求40所述的网络设备,其特征在于,所述上行信息在时域上占用的所述第二符号的数量是基于所述随机接入前导码在时域上占用的所述第一符号的数量确定的,其中,
    所述第二符号的数量与所述第一符号的数量之间的比值为第三预设值;或
    所述第二符号的数量与所述第一符号的数量之间的差值为第四预设值。
  42. 根据权利要求36至41中任一项所述的网络设备,其特征在于,所述第一CP和所述第二CP的长度相同。
  43. 根据权利要求36至41中任一项所述的网络设备,其特征在于,所述第一CP的长度大于所述第二CP的长度。
  44. 根据权利要求36至43中任一项所述的网络设备,其特征在于,所述网络设备还包括:
    处理单元,用于从多个随机接入传输格式中确定随机接入传输格式,其中,针对不同的随机接入传输格式,以下中的至少一种不同:所述第一CP的长度、所述上行信息在时域上占用的所述第二符号的数量、所述第一符号中所述第一信息段的数量和所述第二符号中所述第二信息段的数量;
    所述通信单元还用于:
    向所述终端设备发送配置信息,所述配置信息包括确定的所述随机接入传输格式。
  45. 根据权利要求36至44中任一项所述的网络设备,其特征在于,所述随机接入前导码的子载波间隔和所述上行信息的子载波相同。
  46. 根据权利要求36至45中任一项所述的网络设备,其特征在于,所述上行信息包括所述终端设备标识、触发所述PRACH发送的事件所属的类别、调度请求SR、缓存状态报告BSR和业务数据中的至少一种。
  47. 一种终端设备,其特征在于,包括:处理器和存储器,所述存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求1至12中任一项所述的方法。
  48. 一种网络设备,其特征在于,包括:处理器和存储器,所述存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求13至23中任一项所述的方法。
  49. 一种芯片,其特征在于,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求1至12中任一项所述的方法。
  50. 一种芯片,其特征在于,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求13至23中任一项所述的方法。
  51. 一种计算机可读存储介质,其特征在于,用于存储计算机程序,所述计算机程 序使得计算机执行如权利要求1至12中任一项所述的方法。
  52. 一种计算机可读存储介质,其特征在于,用于存储计算机程序,所述计算机程序使得计算机执行如权利要求13至23中任一项所述的方法。
  53. 一种计算机程序产品,其特征在于,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至12中任一项所述的方法。
  54. 一种计算机程序产品,其特征在于,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求13至23中任一项所述的方法。
  55. 一种计算机程序,其特征在于,所述计算机程序使得计算机执行如权利要求1至12中任一项所述的方法。
  56. 一种计算机程序,其特征在于,所述计算机程序使得计算机执行如权利要求13至23中任一项所述的方法。
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