WO2021184354A1 - Procédé, appareil et dispositif de transmission d'informations, et support de stockage - Google Patents

Procédé, appareil et dispositif de transmission d'informations, et support de stockage Download PDF

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Publication number
WO2021184354A1
WO2021184354A1 PCT/CN2020/080409 CN2020080409W WO2021184354A1 WO 2021184354 A1 WO2021184354 A1 WO 2021184354A1 CN 2020080409 W CN2020080409 W CN 2020080409W WO 2021184354 A1 WO2021184354 A1 WO 2021184354A1
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Prior art keywords
information
frequency domain
domain resource
data channel
time
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PCT/CN2020/080409
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English (en)
Chinese (zh)
Inventor
贺传峰
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Oppo广东移动通信有限公司
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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 PCT/CN2020/080409 priority Critical patent/WO2021184354A1/fr
Priority to CN202080093641.XA priority patent/CN114982356A/zh
Publication of WO2021184354A1 publication Critical patent/WO2021184354A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to an information transmission method, device, device, and storage medium.
  • the new radio-light (NR-light) system is proposed to expand and optimize 5G’s support for the Internet of Things. It can meet the needs of other services besides enhanced mobile broadband (eMBB) services.
  • eMBB enhanced mobile broadband
  • the terminals that support these services can be called low-capacity terminals, which have the characteristics of reduced bandwidth, relaxed processing time, and reduced number of antennas, thereby reducing power consumption and cost.
  • the terminal device In the initial access process in the existing NR system, the terminal device first receives the physical downlink control channel (PDCCH) through the master information block (MIB), and the PDCCH is a type 0 (type 0) PDCCH It carries control channel resource set (CORESET) and search space (search space) information, so that it can obtain the physical downlink shared channel that carries system information block 1 (SIB1). , PDSCH) scheduling information.
  • PDCCH physical downlink control channel
  • MIB master information block
  • CORESET control channel resource set
  • search space search space
  • the terminals supported by the NR-light system are low-capacity terminals, based on the initial access process of the NR system described above, it is necessary to detect type 0 PDCCH first, and then obtain the scheduling information of the PDSCH carrying SIB1, resulting in large power consumption of the terminal and complex detection. The problem.
  • the embodiments of the present application provide an information transmission method, device, equipment, and storage medium, which solve the problems of large power consumption and complicated detection of the terminal in the initial access process of the existing terminal.
  • an embodiment of the present application provides an information transmission method, which is applied to a terminal device, and the method includes:
  • the scheduling information includes at least one of frequency domain resource information and time domain resource information.
  • an embodiment of the present application provides an information transmission method, which is applied to a network device, and the method includes:
  • the scheduling information includes at least one of frequency domain resource information and time domain resource information.
  • an embodiment of the present application provides an information transmission device, including: a receiving module and a processing module;
  • the receiving module is configured to receive instruction information through a physical broadcast channel
  • the processing module is configured to determine scheduling information of a data channel according to the indication information, the data channel carrying system messages, and the scheduling information includes at least one of frequency domain resource information and time domain resource information.
  • an embodiment of the present application provides an information transmission device, including: a processing module and a sending module;
  • the processing module is configured to determine scheduling information of a data channel, and the data channel carries system messages;
  • the sending module is configured to send the indication information of the scheduling information through a physical broadcast channel
  • the scheduling information includes at least one of frequency domain resource information and time domain resource information.
  • an embodiment of the present application provides a terminal device, including:
  • Processor memory, receiver, and interface for communication with network equipment
  • the memory stores computer execution instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the method according to the first aspect.
  • the foregoing processor may be a chip.
  • an embodiment of the present application provides a network device, including:
  • Processor memory, transmitter, and interface for communication with terminal equipment
  • the memory stores computer execution instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the method according to the second aspect.
  • the foregoing processor may be a chip.
  • an embodiment of the present application provides a computer-readable storage medium having computer-executable instructions stored in the computer-readable storage medium.
  • the computer-executable instructions are executed by a processor, they are used to implement the first aspect.
  • an embodiment of the present application provides a computer-readable storage medium having computer-executable instructions stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement the description of the second aspect Methods.
  • an embodiment of the present application provides a program, which is used to execute the method described in the first aspect when the program is executed by a processor.
  • an embodiment of the present application provides a program, when the program is executed by a processor, it is used to execute the method described in the second aspect.
  • an embodiment of the present application provides a computer program product, including program instructions, and the program instructions are used to implement the method described in the first aspect.
  • an embodiment of the present application provides a computer program product, including program instructions, and the program instructions are used to implement the method described in the second aspect.
  • an embodiment of the present application provides a chip, which includes a processing module and a communication interface, and the processing module can execute the method described in the first aspect.
  • the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the first aspect.
  • a storage module such as a memory
  • the storage module is used to store instructions
  • the processing module is used to execute the instructions stored in the storage module
  • the execution of the instructions stored in the storage module causes the processing module to perform the first aspect. The method described.
  • an embodiment of the present application provides a chip, which includes a processing module and a communication interface, and the processing module can execute the method described in the second aspect.
  • the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the second aspect The method described.
  • a storage module such as a memory
  • the storage module is used to store instructions
  • the processing module is used to execute the instructions stored in the storage module
  • the execution of the instructions stored in the storage module causes the processing module to execute the second aspect The method described.
  • a fifteenth aspect of this application provides a communication system, including: network equipment and terminal equipment;
  • the terminal device is the device described in the third aspect
  • the network device is the device described in the fourth aspect.
  • the network equipment first determines the scheduling information of the data channel, and the data channel carries the system message, and then sends the indication of the scheduling information through the physical broadcast channel
  • the terminal device determines the scheduling information of the data channel according to the instruction information received through the physical broadcast channel.
  • the scheduling information includes at least one of frequency domain resource information and time domain resource information. The terminal device does not need to detect the control channel, and can also obtain the scheduling information of the data channel carrying the system message, which simplifies the detection complexity and reduces the power consumption of the terminal.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of this application.
  • Figure 2 is a schematic diagram of the distribution of time domain and frequency domain resources included in a synchronization signal block
  • Figure 3 is a schematic diagram of frequency domain resource allocation based on RBG
  • Figure 4 is a schematic diagram of resource distribution with frequency domain resource allocation as type 1;
  • FIG. 5 is a schematic diagram of interaction in Embodiment 1 of the information transmission method provided by this application.
  • Embodiment 2 is a schematic diagram of interaction of Embodiment 2 of the information transmission method provided by this application;
  • FIG. 7 is a schematic diagram of the first bandwidth where the data channel is located and the frequency domain position of the first bandwidth;
  • FIG. 8 is another schematic diagram of the first bandwidth where the data channel is located and the frequency domain position of the first bandwidth
  • FIG. 9 is another schematic diagram of the distribution of the first bandwidth and the frequency domain position of the first bandwidth where the data channel is located;
  • Embodiment 10 is a schematic diagram of interaction in Embodiment 3 of the information transmission method provided by this application;
  • FIG. 11 is a schematic structural diagram of Embodiment 1 of an information transmission device provided by this application.
  • FIG. 12 is a schematic structural diagram of Embodiment 2 of the information transmission device provided by this application.
  • FIG. 13 is a schematic diagram of the structure of the terminal device provided by this application.
  • FIG. 14 is a schematic diagram of the structure of the network equipment provided by this application.
  • FIG. 15 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of this application.
  • the communication system may include a network device 110 and a plurality of terminal devices 120 located within the coverage area of the network device 110.
  • FIG. 1 exemplarily shows one network device 110 and two terminal devices 120.
  • the communication system may include multiple network devices 110, and the coverage of each network device may include other numbers of terminal devices 120.
  • the embodiment of the present application may include network devices 110 and terminal devices included in the communication system.
  • the number of 120 is not limited.
  • the terminal device 120 is connected to the network device 110 in a wireless manner.
  • the network device 110 and the multiple terminal devices 120 may use unlicensed spectrum for wireless communication.
  • direct terminal connection (device to device, D2D) communication may be performed between the terminal devices 120.
  • Figure 1 is only a schematic diagram.
  • the communication system may also include other network equipment, such as core network equipment, wireless relay equipment, and wireless backhaul equipment, or may include other networks such as network controllers, mobility management entities, etc. Entity, the embodiment of this application is not limited to this.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE frequency division duplex FDD
  • TDD LTE Time division duplex
  • LTE-A advanced long term evolution
  • NR new radio
  • evolution system of NR system LTE on unlicensed frequency bands (LTE-based access to unlicensed spectrum, LTE-U) system, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed frequency bands, universal mobile telecommunication system (UMTS), global Connected microwave access (worldwide interoperability for microwave access, WiMAX) communication systems, wireless local area networks (WLAN), wireless fidelity (WiFi), next-generation communication systems or other communication systems, etc.
  • WiMAX wireless local area networks
  • WiFi wireless fidelity
  • next-generation communication systems or other communication systems etc.
  • D2D device to device
  • M2M machine to machine
  • MTC machine type communication
  • V2V vehicle to vehicle
  • the network equipment involved in the embodiments of this application may be a common base station (such as NodeB or eNB or gNB), a new radio controller (NR controller), a centralized network element (centralized unit), a new radio base station, Radio remote module, micro base station, relay, distributed unit, reception point (transmission reception point, TRP), transmission point (transmission point, TP), or any other equipment.
  • a common base station such as NodeB or eNB or gNB
  • NR controller new radio controller
  • a centralized network element centralized unit
  • a new radio base station Radio remote module
  • micro base station relay, distributed unit, reception point (transmission reception point, TRP), transmission point (transmission point, TP), or any other equipment.
  • TRP transmission reception point
  • TP transmission point
  • the terminal device may be any terminal.
  • the terminal device may be a user equipment for machine-type communication. That is to say, the terminal equipment can also be called user equipment (UE), mobile station (MS), mobile terminal (mobile terminal), terminal (terminal), etc.
  • the terminal equipment can be connected via wireless
  • the radio access network (RAN) communicates with one or more core networks.
  • the terminal device may be a mobile phone (or called a "cellular" phone), a computer with a mobile terminal, etc., for example, the terminal device may also They are portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network.
  • UE user equipment
  • MS mobile station
  • mobile terminal mobile terminal
  • terminal terminal
  • the terminal equipment can be connected via wireless
  • the radio access network (RAN) communicates with one or more core networks.
  • the terminal device may be a mobile phone (or called a "cellular" phone), a computer with a mobile terminal, etc., for example, the terminal device may also They are portable
  • network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
  • the embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.
  • communication between network equipment and terminal equipment and between terminal equipment and terminal equipment can be conducted through licensed spectrum, or through unlicensed spectrum, or through licensed spectrum and communication at the same time. Unlicensed spectrum for communication.
  • Between network equipment and terminal equipment and between terminal equipment and terminal equipment can communicate through the frequency spectrum below 7 gigahertz (gigahertz, GHz), can also communicate through the frequency spectrum above 7 GHz, and can also use the frequency spectrum below 7 GHz and Communication is performed in the frequency spectrum above 7GHz.
  • the embodiment of the present application does not limit the spectrum resource used between the network device and the terminal device.
  • “multiple” refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone.
  • the character “/” generally indicates that the associated objects before and after are in an "or” relationship.
  • Synchronization signal block SSB (SS/PBCH block) in NR
  • SS/PBCH block is the abbreviation of synchronization signal block (synchronization signal block, SS block) and physical broadcast channel block (physical broadcast channel block, PBCH block).
  • common channels and common signals need to cover the entire cell by means of multi-beam scanning, which is convenient for terminal equipment in the cell to receive.
  • the multi-beam transmission of the synchronization signal (synchronization signal, SS) is realized by defining the SS/PBCH burst set (SS/PBCH burst set).
  • An SS/PBCH burst set contains one or more SS/PBCH blocks.
  • An SS/PBCH block is used to carry the synchronization signal and broadcast channel of a beam. Therefore, the number of synchronization signal beams that can be included in an SS/PBCH burst set is the same as the number of synchronization signal blocks in the cell (SS block number).
  • the maximum number of SS block number L is related to the frequency band of the system. Specifically, for the frequency band up to 3 GHz, L is equal to 4 (For frequency range up to 3 GHz, L is 4); for the frequency range (frequency band) from 3 GHz to 6 GHz, L is equal to 8 (For frequency range from 3 GHz to 6 GHz, L is 8); For the frequency range (frequency band) from 6 GHz to 52.6 GHz, L is equal to 64 (For frequency range from 6 GHz to 52.6 GHz, L is 64).
  • FIG. 2 is a schematic diagram of the distribution of time domain and frequency domain resources included in a synchronization signal block.
  • the time domain information includes: OFDM symbol 0 to OFDM symbol 3, and the frequency domain information includes 0 to 239 subcarriers.
  • one SS/PBCH block (SSB) includes orthogonal frequency division multiplexing (OFDM) and is distributed as follows: one symbol of the primary synchronization signal (primary synchronization signal, PSS), and one symbol of the secondary synchronization signal A combination of (Secondary Synchronization Signal, SSS) and two physical broadcast channels (physical broadcast channel, PBCH), and a two-symbol PBCH.
  • the time-frequency resources occupied by the PBCH include a demodulation reference signal (DMRS), and the DMRS is used for demodulation of the PBCH.
  • DMRS demodulation reference signal
  • PSS occupies 56-182 subcarriers in the frequency domain
  • PBCH occupies 0-239 subcarriers in the frequency domain
  • SSS occupies 56-182 subcarriers in the frequency domain
  • PBCH occupies the frequency domain 0-47 and 192-239 subcarriers.
  • all SS/PBCH blocks in the SS/PBCH burst set are sent within a time window of 5ms, and are sent repeatedly at a certain cycle, which is configured by the high-level parameter synchronization signal block timer (SSB-timing) .
  • the value of the period includes 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, etc.
  • the UE determines the index of the SSB through the received SS/PBCH block, and the value range of the SSB index (SSB index) is [0, L-1], where L Is the maximum number of SSBs corresponding to the frequency band where the SSB is located.
  • the SSB index corresponds to the relative position of the SSB within the 5ms time window, and the UE determines the frame synchronization information according to the SSB index and the half-frame indication carried in the PBCH.
  • the index of the SS/PBCH block is indicated by the DMRS of the PBCH or the information carried by the PBCH.
  • PBCH carries master information block (master information block, MIB).
  • the MIB includes the information field of SIB1 configuration (pdcch-ConfigSIB1) carried by PDCCH. Specifically, it includes control resource 0 of type 0 PDCCH (type 0 PDCCH) Set (control resource set, CORESET 0) information.
  • the CORESET 0 information is used to indicate the resource block (resource block, RB) of the type 0 PDCCH in the frequency domain and the symbol in the time domain.
  • the pdcch-ConfigSIB1 information field in the MIB information carried by the PBCH includes the CORESET#0 information of the type 0 PDCCH.
  • Table 1 shows the correspondence between the index indicated by the CORESET 0 information and the number of RBs and the number of symbols of CORESET 0.
  • Table 1 is mainly for the frequency band with the minimum channel bandwidth of 5MHz or 10MHz, and when the subcarrier spacing of ⁇ SS/PBCHblock, PDCCH ⁇ is ⁇ 15, 15 ⁇ kHz, the search space of Type0-PDCCH is set to carry Set of resource blocks and CORESET time slot symbols (Set of resource blocks and slot symbols of CORESET for Type0-PDCCH search space set when ⁇ SS/PBCH block,PDCCH ⁇ SCS is ⁇ 15,15 ⁇ kHz for frequencybands with minimum channel bandwidth 5MHz or 10MHz).
  • the CORESET 0 information indicates one of the indexes in Table 1. According to the index, the number of RBs and the number of symbols of CORESET 0 and the RB offset compared to SSB can be obtained.
  • the bandwidth of CORESET 0 can be configured as 24, 48, 96 RBs, and the frequency domain position of CORESET#0 is offset from the frequency domain position of SSB The number of RBs moved.
  • the pdcch-ConfigSIB1 information field in the MIB information carried by the PBCH may also include type 0 PDCCH search space 0 (Search space 0) information.
  • the Search space 0 information is used to determine the monitoring timing of the type 0 PDCCH.
  • the monitoring timing of type 0 PDCCH is determined by the following method: the multiplexing mode of SSB (SS/PBCH block) and CORESET is pattern 1, and the terminal device monitors the common search space of Type 0-PDCCH on two consecutive time slots.
  • each SSB numbered i corresponds to a listening window
  • the number n 0 of the starting time slot of the listening window is determined by the following formula:
  • I the number of time slots in a radio frame
  • ⁇ is a parameter related to subcarrier spacing. Indicates rounding down, that is Represents the largest integer smaller than i ⁇ M.
  • M and O can be indicated by the Search space 0 information in the PBCH.
  • the value of O includes ⁇ 0,2,5,7 ⁇
  • the value of O includes ⁇ 0,2.5,5,7.5 ⁇
  • the value of M includes ⁇ 1/2,1,2 ⁇ .
  • Table 2 shows the parameters for PDCCH monitoring occasions when the common search space (CSS) of Type0-PDCCH is set to SSB and CORESET adopts multiplexing mode 1 and frequency range FR1.
  • CSS common search space
  • FR1 the Search space 0 indication information is shown in the following table:
  • the radio frame number SFN C where the listening window is located should be further determined:
  • SFN C when according to When the number of time slots calculated is less than the number of time slots contained in a radio frame, SFN C is an even number of radio frames; When the calculated number of time slots is greater than the number of time slots included in a radio frame, SFN C is an odd number of radio frames.
  • the scheduling information of the PDSCH carrying the System Information Block Type1-Bandwidth-reduced (SIB1-BR) with reduced bandwidth does not need to be carried by the control channel, and the PDSCH is on a certain radio frame and subframe number. send.
  • SIB1-BR System Information Block Type1-Bandwidth-reduced
  • the narrowband where the frequency domain resource of the PDSCH is located is hopped between the narrowbands in the downlink bandwidth according to a rule.
  • the frequency domain resources of the PDSCH occupy 6 narrow-band physical resource blocks (PRB).
  • PRB physical resource blocks
  • the start symbol of the PDSCH in the subframe is determined according to the downlink bandwidth of the cell, and the scheduling information of the PDSCH carrying SIB1-BR is carried by MIB information.
  • the scheduling information of the PDSCH carrying SIB1-BR includes the number of PDSCH retransmissions and the transport block size.
  • the information field indicates the number of PDSCH retransmissions and the transport block size.
  • the information field is the value of the scheduling information SIB1-BR (Value of schedulingInfoSIB1-BR), the range is an integer 0-31. Refer to Table 3 and Table 4 for details.
  • Table 3 shows the number of repetitions ( Number of repetitions for PDSCH carrying System Information BlockType1-BR for BL/CE UE), that is, the number of PDSCH retransmissions indicated by the value of the scheduling information SIB1-BR.
  • Table 4 shows the transport block size (TBS) table for PDSCH carrying SystemInformationBlockType1-BR) of the PDSCH carrying bandwidth reduction type 1, that is, the transport block indicated by the value of the scheduling information SIB1-BR (transport block index I TBS) size.
  • TBS transport block size
  • the PDSCH carrying the SIB1-BR is transmitted according to a scheduling period of 80 ms, repeated transmission is performed in each period, and the radio frame and subframe in which the retransmission is located is determined according to the cell identifier and the number of retransmissions.
  • the PDSCH carrying the SIB1-BR is permanently modulated in a quadrature phase shift keying (quadrature phase shift keying, QPSK) mode.
  • the base station when the base station schedules downlink data transmission through the downlink control information (DCI) (DCI format 1_0 or DCI format 1_1) of the downlink grant (DL grant), the PDSCH scheduling information is carried in the DCI.
  • the scheduling The information includes time domain resource allocation information and frequency domain resource allocation information.
  • the time domain resource allocation information is indicated by the time domain resource allocation (TDRA) field.
  • the TDRA field contains 4 bits and can indicate 16 different rows in a resource allocation table, and each row contains different resource allocations.
  • Combinations such as the starting symbol S of PDSCH, length L, k0, and different types.
  • k0 represents the number of slots offset between the slot where the DCI is located and the slot where the PDSCH is located.
  • the starting symbol and length of the PDSCH are no longer fixed, but the starting symbol S and the length L of the PDSCH in the scheduling time slot are indicated through the TDRA field in the DCI.
  • the values of S and L are not arbitrary, but are jointly coded to form a start and length indicator (the start and length indicator, SLIV) value.
  • SLIV start and length indicator
  • the specific values of the SLIV value are shown in Table 5.
  • Table 5 shows valid S and L combinations (Valid S and L combinations).
  • Type A there are two ways of time domain resource allocation: Type A and Type B.
  • Type A is mainly oriented to slot-based services, S is relatively high, and L is relatively long.
  • Type B is mainly oriented to the services of ultra-reliable and low-latency communications (URLLC), which requires high latency. Therefore, the location of S is relatively free to transmit URLLC services that arrive at any time. L is shorter and can be used. Reduce transmission delay.
  • URLLC ultra-reliable and low-latency communications
  • the Type0 frequency domain resource allocation method has the concept of a resource block group (RBG).
  • RBG resource block group
  • RRC radio resource control
  • Configuration 1 and Configuration 2 The specific number of RBs together is called An RBG is related to the radio resource control (radio resource control, RRC) configuration (Configuration 1 and Configuration 2) and the bandwidth Part Size (Bandwidth Part Size), as shown in Table 6, Table 6 is the nominal RBG The size P (Nominal RBG size P).
  • each RBG has a 1-bit correspondence. If this bit is set to 1, it means that the RBG is allocated to the PDSCH. Assuming that the bandwidth of the BWP is 14 RBs, the RRC configuration RBG is Configuration 1, and looking up Table 6, the size of the RBG is 2.
  • FIG. 3 is a schematic diagram of frequency domain resource allocation based on RBG. As shown in FIG. 3, the RBG in the filling part represents the RBG allocated to the terminal device. At this time, the frequency domain resource allocation can be represented by "0101010".
  • the Type1 frequency domain resource allocation method forms a resource indication value (RIV) by jointly encoding the starting position (S) and the length (L) of the resource. Among them, a group of (S, L) corresponds to one RIV one-to-one, and the terminal device can deduce the corresponding (S, L) through the RIV.
  • RIV resource indication value
  • FIG. 4 is a schematic diagram of frequency domain resource allocation of Type1.
  • the start RB of frequency allocation is RB No. 2 (the third RB, from bottom to top), and then 7 RBs are continuously occupied.
  • the network equipment indicates the resource distribution of the scheduling information of the PDSCH carrying SIB1 through the DCI format 1_0:
  • the network device uses DCI format 1_0 to indicate the scheduling information of the PDSCH carrying SIB1.
  • the frequency domain resource allocation method adopts type 1. Specifically, the number of occupied bits of PDSCH scheduling information is specifically:
  • the number of bits occupied by frequency domain resource allocation information is in, Is the bandwidth of CORESET 0, that is, the number of resource blocks (broadband) in the downlink bandwidth part;
  • Time domain resource allocation information occupies 4 bits; virtual RB to physical RB mapping mode occupies 1 bit; modulation and coding mode occupies 5 bits; redundant version occupies 2 bits; system message indication occupies 1 bit; reserved bits are 15 bits.
  • CORESET 0 is indicated by 4 bits in the MIB information, and its meaning is type 0 PDCCH control resource collection, including the number of RBs and symbols of CORESET 0, as well as the frequency domain position, that is, the phase RB offset than SSB.
  • the time domain resource allocation information of the PDSCH carrying SIB1 when the time domain resource allocation information of the PDSCH carrying SIB1 is indicated through DCI format 1_0, the time domain resource allocation information includes 4 bits, which are used to indicate the start symbol S and the length L of the PDSCH in the scheduling slot .
  • Table 7 is a conventional CP, the time domain resource allocation information of the PDSCH of type A is defaulted.
  • 4-bit information is used to indicate 16 kinds of index values, and each index corresponds to the combination of the start symbol S and the length L.
  • the time slot where the PDSCH is located is determined by the time slot where the PDCCH is detected by the terminal and the K0 value indicated in the DCI.
  • the search space 0 information is used to determine the monitoring timing of type 0 PDCCH, and each monitoring timing includes two consecutive Time slot monitoring.
  • the terminal device detects the PDCCH on the time slot corresponding to the monitoring occasion, and if it detects the DCI scheduling the PDSCH carrying the SIB1, it determines the time slot where the PDSCH transmission is located according to the K0 information in the DCI.
  • the NR system is mainly designed to support enhanced mobile broadband (eMBB) services, which can meet the needs of high-speed, high-spectrum efficiency, and large-bandwidth services.
  • eMBB enhanced mobile broadband
  • the terminal supporting the above-mentioned services has lower capabilities, for example, the supported bandwidth is reduced, the processing time is relaxed, and the number of antennas is reduced.
  • the NR system is optimized for these services and corresponding low-capacity terminals, and the optimized system is called the NR-light system.
  • the terminal device receives the CORESET and search space information of the type0 PDCCH through the MIB, thereby receiving the type0 PDCCH to receive the SIB1, that is, if the terminal device wants to receive the SIB1, it first needs to detect the type0PDCCH.
  • the scheduling information of the PDSCH carrying SIB1 is then obtained, but for terminals that support low capabilities, there will be problems of large power consumption and complex detection of the terminal.
  • the embodiments of the present application provide an information transmission method.
  • the network device base station
  • the terminal device determines the scheduling information of the data channel according to the instruction information received through the physical broadcast channel.
  • the scheduling information includes at least one of frequency domain resource information and time domain resource information, so that the terminal The device does not need to detect the control channel, and can also obtain the scheduling information of the data channel carrying system messages, which simplifies the detection complexity and reduces the power consumption of the terminal.
  • the technical idea of the technical solution of the present application is: in the LTE system, there are already certain terminals designed to support large connections, low power consumption, and low cost, such as MTC and narrowband internet. of things, NB-IoT) Therefore, in the NR-light system, the MTC system can be referred to to simplify the process of the terminal receiving SIB1. For example, the terminal does not need to detect type 0 PDCCH, but can also obtain the scheduling information of the PDSCH carrying SIB1. Therefore, how to obtain the scheduling information of the PDSCH carrying SIB1 in the NR-light system is a technical problem to be solved in this application.
  • FIG. 5 is a schematic diagram of interaction of Embodiment 1 of the information transmission method provided by this application. The method is explained by the information interaction between the terminal equipment and the network equipment. Referring to FIG. 5, in this embodiment, the method may include the following steps:
  • the network device determines scheduling information of a data channel, and the data channel carries system messages.
  • the system message is carried through the data channel, for example, SIB1, SIB2, SIB3 to SIB9, and so on.
  • SIB1, SIB2, SIB3 to SIB9 the data channel
  • the following briefly introduces some messages in SIB1, SIB2, SIB3 to SIB9.
  • the specific content or function of each of the above-mentioned messages is in the prior art, and will not be repeated here.
  • SIB1 is also called a scheduling block and can carry some cell selection information; SIB2 contains information such as common channels and pilots; SIB3 contains cell reselection parameters and so on.
  • system message element is placed in a "system information block (SIB)" for broadcast.
  • SIB system information block
  • a system information block can combine system information elements of the same nature, and different system information blocks can have different characteristics.
  • the network device may send configuration information, for example, scheduling information of the data channel, to the terminal device. Therefore, the network device first needs to determine the scheduling information of the data channel.
  • the scheduling information of the data channel includes frequency domain resource information, time domain resource information, virtual RB to physical RB mapping mode, modulation and coding mode, and redundancy version. , The number of retransmissions, and so on.
  • the network device sends the indication information of the scheduling information through the physical broadcast channel.
  • the scheduling information includes at least one of frequency domain resource information and time domain resource information.
  • the network device may not send the scheduling information of the data channel through the PDCCH, but may carry it through the physical broadcast channel PBCH. Specifically, after the network device determines at least one type of scheduling information, it can send indication information of the scheduling information through the PBCH, so that the terminal device can determine the corresponding scheduling information according to the received indication information.
  • the frequency domain resource information may indicate the frequency domain resource information occupied by the terminal device and the network device during data transmission
  • the time domain resource information may indicate the time domain resource information occupied by the terminal device and the network device during data transmission.
  • the scheduling information corresponding to the indication information carried by the network equipment through the PBCH needs to include at least one of frequency domain resource information and time domain resource information.
  • the network device sends the indication information of frequency domain resource information through the PBCH; in another embodiment of the present application, the network device sends the indication information of time domain resource information through the PBCH; In still another embodiment of the present application, the network device sends frequency domain resource information and time domain resource information indication information, etc. through the PBCH.
  • the embodiments of the present application do not limit the specific content of the scheduling information sent through the PBCH.
  • the network device may also send indications of information such as modulation and coding mode and/or redundancy version through the PBCH.
  • Information, etc., about the specific content of the scheduling information sent through the PBCH can be determined according to the actual situation, and will not be repeated here.
  • the indication information of the scheduling information is mainly information used to indicate the scheduling information.
  • the indication information of the frequency domain resource information may be at least one of the bandwidth of the data channel, the frequency domain position information of the bandwidth, the frequency domain resource allocation information within the bandwidth, etc.
  • the indication information of the time domain resource information may It is at least one of the time slot where the data channel is located, the starting symbol and the number of symbols in the time slot, and so on.
  • the indication information of different scheduling information is different, which can be determined according to the actual situation, which is not limited in the embodiment of the present application.
  • the terminal device determines the scheduling information of the data channel according to the instruction information received through the physical broadcast channel.
  • the terminal device can correspondingly receive the above indication information through the physical broadcast channel, and then determine the corresponding scheduling information according to the indication information , And then determine all the scheduling information of the data channel based on the determined scheduling information and/or preset information.
  • the terminal device may first determine the frequency domain resource information of the data channel according to the indication information, and then based on preset information or at least one of the frequency domain resource information A correspondence relationship with other information determines the other information included in the scheduling information of the data channel.
  • the terminal device can first determine the time domain resource information of the data channel according to the indication information, and then based on preset information or at least one of the time domain resource information and other information. The corresponding relationship of the information determines other information included in the scheduling information of the data channel.
  • the other information in this embodiment may be other information in the scheduling information included in the data channel except for the scheduling information corresponding to the indication information.
  • the specific manifestation of the other information can be determined according to actual conditions. Go into details again.
  • the network device determines the scheduling information of the data channel, the data channel carries the system message, and sends the indication information of the scheduling information through the physical broadcast channel, and the terminal equipment according to the indication information received through the physical broadcast channel , Determine scheduling information of the data channel, where the scheduling information includes at least one of frequency domain resource information and time domain resource information.
  • the terminal device can receive the time domain resource information and/or frequency domain resource information of the data channel carrying system messages without detecting the control channel, which reduces the power consumption and detection complexity of the terminal device.
  • FIG. 6 is a schematic diagram of interaction of Embodiment 2 of the information transmission method provided by this application.
  • the frequency domain resource information is carried by a physical broadcast channel, as shown in FIG. 6, the above S502 can be implemented through the following steps:
  • the network device determines frequency domain indication information of the frequency domain resource information.
  • the frequency domain indication information includes at least one of the following information: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.
  • the frequency domain indication information of the frequency domain resource information may be determined first.
  • the frequency domain indication information may include at least one of the following information: the first bandwidth where the data channel is located, the frequency domain location information of the first bandwidth, and the frequency domain resource allocation information within the first bandwidth. That is, the network device may use at least one of the first bandwidth where the data channel is located, the frequency domain location information of the first bandwidth, and the frequency domain resource allocation information in the first bandwidth as the indication information of the frequency domain resource information.
  • the frequency domain indication information includes one of the first bandwidth where the data channel is located, the frequency domain location information of the first bandwidth, the frequency domain resource allocation information in the first bandwidth, etc.
  • the frequency domain indication information may include two of the first bandwidth where the data channel is located, the frequency domain location information of the first bandwidth, and the frequency domain resource allocation information within the first bandwidth
  • the frequency domain indication information may include all of the first bandwidth where the data channel is located, the frequency domain location information of the first bandwidth, and the frequency domain resource allocation information in the first bandwidth Wait.
  • the frequency domain resource allocation mode of the above frequency domain resource allocation information is type 1.
  • the frequency domain resource allocation information includes: the number of resource blocks or the number of resource block groups.
  • the frequency domain resource allocation information includes: the number of resource blocks and the location information of the starting resource block; or, the frequency domain resource allocation information includes: the number of resource block groups and the location of the starting resource block group information.
  • the network device indicates the frequency domain resource information of the PDSCH through the frequency domain indication information carried by the PBCH, and the PDSCH can carry system messages such as SIB1.
  • the network device in order to indicate the frequency domain resource information of the PDSCH carrying SIB1 through the PBCH, the network device first needs to obtain frequency domain indication information, that is, the first bandwidth occupied by the data channel and the frequency domain location information of the first bandwidth, and Frequency domain resource allocation information in the first broadband.
  • the specific design of the frequency domain indication information can refer to the records in the existing NR system, that is, the first bandwidth is similar to the bandwidth in the CORESET 0 information, and the frequency domain position information of the first bandwidth is similar to the CORESET 0 information.
  • the frequency domain location information of the bandwidth, and the frequency domain resource allocation information in the first broadband is similar to the frequency domain resource allocation information of type 1 in the bandwidth in the CORESET 0 information.
  • the network device may jointly encode the first bandwidth and the frequency domain position information of the first bandwidth, so as to represent the value combination of the first bandwidth and the frequency domain position information of the first bandwidth.
  • 3 bits are required to represent the value combination information, and then the information is carried by the PBCH.
  • the PBCH also needs to carry the frequency domain resource allocation information in the first broadband.
  • the CORESET 0 broadband can include 24RB, 48RB, and 96RB.
  • a bandwidth It can also include 24RB, 48RB, and 96RB.
  • the frequency domain resource allocation information corresponding to 96 RBs requires 13 bits.
  • the resources occupied are too large. Therefore, in this embodiment, the granularity of frequency domain resource allocation can be increased. For example, a defined RBG is used for resource allocation, and the number of RBs included in the first bandwidth of the frequency domain indication information is divided into a number of RBGs.
  • the 96 RBs are 24 RBGs.
  • the frequency domain resource allocation information requires 9 bits. That is, in this embodiment, for any starting RB or RBG+any number of RBs or RBGs in the first bandwidth, it is possible to determine how many combinations there are, and then calculate the required number of bits according to the above formula.
  • the frequency domain resource allocation information may only include the number of RBs or RBGs allocated by the frequency domain resource.
  • the position of each RB or each RBG within the first bandwidth may be predefined.
  • the frequency domain resource allocation information may include the number of RB/RBG allocated by the frequency domain resource, and the starting RB/RBG of the frequency domain resource.
  • the number of RBs and the value of the starting RB can be in a combined form, and the combination of the number of RBs and the starting RB is a limited number.
  • the number of RBGs and the value of the starting RBG may also be in a combined form, where the number of RBGs and the combination of the starting RBG are also limited.
  • the allocation method in this embodiment sacrifices the flexibility of frequency domain resource allocation, but reduces the number of bits required for frequency domain resource allocation information, and reduces resource consumption.
  • ⁇ number of allocated RBs, starting RB ⁇ can only be ⁇ 24,0 ⁇ , ⁇ 24 ,16 ⁇ , ⁇ 24,32 ⁇ , that is, the number of allocated RBs must be less than or equal to the number of RBs included in the first bandwidth.
  • the number of bits of the information carried by the PBCH can be reduced, and the information redundancy carried by the PBCH can be reduced.
  • the first bandwidths on different time units are the same, and the frequency domain positions of the first bandwidths on different time units are the same.
  • FIG. 7 is a schematic diagram of the first bandwidth where the data channel is located and the frequency domain position of the first bandwidth.
  • the schematic diagram illustrates the frequency domain positions of the first bandwidth and the first bandwidth on three time slots (time slot 1 to time slot 3). Referring to FIG. 7, the first bandwidth on time slot 1 to time slot 3 is the same, and the frequency domain position of the first bandwidth on time slot 1 to time slot 3 is the same.
  • the difficulty of indicating the frequency domain indication information can be reduced, thereby reducing the resource allocation requirements.
  • the first bandwidths on at least two time units are different, and/or the frequency domain positions of the first bandwidths on at least two time units are different.
  • the solution can be interpreted as the following situation: first, the first bandwidth on at least two time units is different; second, the frequency of the first bandwidth on at least two time units The domain positions are different; third, the first bandwidths on at least two time units are different and the frequency domain positions of the first bandwidths on at least two time units are different.
  • the first bandwidth difference on at least two time units can be understood as the first bandwidth difference on at least two time units in all time units, and the frequency domain positions of the first bandwidth on at least two time units are different. It can be understood that at least two time units have different frequency domain positions of the first bandwidth in all time units.
  • FIG. 8 is another schematic diagram of the first bandwidth where the data channel is located and the frequency domain position of the first bandwidth. Similar to FIG. 7, the schematic diagram is still described with the first bandwidth and the frequency domain positions of the first bandwidth on three time slots (time slot 1 to time slot 3). Referring to Figure 8, the first bandwidth on time slot 1 and time slot 2 is the same, but the first bandwidth on time slot 3 is different from the first bandwidth on time slot 1 and time slot 2. The frequency domain position of the first bandwidth on slot 2 is the same, and the frequency domain position of the first bandwidth on time slot 3 is different from the frequency domain position of the first bandwidth on time slot 1 and time slot 2.
  • FIG. 9 is another schematic diagram of the distribution of the first bandwidth and the frequency domain position of the first bandwidth where the data channel is located.
  • the schematic diagram is still described with the frequency domain positions of the first bandwidth and the first bandwidth on the three time slots (time slot 1 to time slot 3).
  • the first bandwidths on time slot 1, time slot 2 and time slot 3 are all different, and the frequency domain positions of the first bandwidth on time slot 1, time slot 2 and time slot 3 are all different.
  • the frequency domain indication information can indicate the frequency domain position on the first bandwidth and frequency hopping can also be performed over time, that is, the frequency domain position of the first bandwidth on different time units is different, and it can also indicate The frequency domain positions of the first bandwidth on different time units are the same, and it may also indicate that the first bandwidth on different time units and the frequency domain positions on the first bandwidth are different.
  • the embodiment of the present application does not limit the specific relationship between the first bandwidth and the frequency domain position of the first bandwidth on different time units, which can be determined according to actual conditions, and will not be repeated here.
  • the network device sends the indication information including the frequency domain indication information through the physical broadcast channel.
  • the network device after the network device determines the frequency domain indication information according to the above step S601, it can broadcast the frequency domain indication information through the PBCH.
  • the terminal device determines the frequency domain indication information of the frequency domain resource information according to the foregoing indication information.
  • the frequency domain indication information of the frequency domain resource information can be determined by analyzing the indication information.
  • the frequency domain indication information includes at least one of the following information: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.
  • the terminal device determines frequency domain resource information of the data channel according to the frequency domain indication information.
  • the terminal device when the terminal device determines the frequency domain indication information of the frequency domain resource information, it may determine the frequency domain resource information of the data channel based on the frequency domain indication information.
  • the frequency domain resource information includes at least one of the following information: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.
  • the above-mentioned frequency domain indication information is at least one of the first bandwidth, the frequency domain location information of the first bandwidth, and the frequency domain resource allocation information in the first bandwidth, then it can be determined based on the known such determination. Other unknown frequency domain resource information.
  • the network device carries the frequency domain resource information of the PDSCH through the PBCH. If the time domain resource information of the PDSCH is not carried through the PBCH, the time domain resource information can be passed through preset information or preset information. Define the way to indicate.
  • the time domain resource information of the data channel is indicated by the preset first information.
  • the first information includes at least one of the following information: radio frame number, time slot number, cell identification, synchronization signal block index, retransmission times, start symbol and number of symbols of the time slot where the data channel is located, Time slot indication information.
  • the time domain resource information includes at least one of the following information: the time slot where the data channel is located, the start symbol of the data channel in the time slot, and the number of symbols.
  • the radio frame number may be the number of the radio frame where the data channel is located
  • the time slot number is the number of the time slot where the data channel is located
  • the cell identifier may be the identifier of the cell where the terminal device is located
  • the synchronization signal block index It may be the index value of the synchronization signal block used by the terminal device and the network device for information exchange
  • the number of retransmissions may refer to the number of retransmissions performed by the terminal device this time and this time.
  • the time slot indication information may be parameters used to calculate time slot information, for example, the period and offset of the time slot where the data channel is located, the time offset between the time slot and the PBCH, and so on.
  • the specific embodiment of the time slot indication information can be determined according to the actual situation, and will not be repeated here.
  • At least one type of information in the time domain resource information has a corresponding relationship with the frequency domain resource information.
  • the network device can use a predefined way to indicate the time domain resource allocation information.
  • the time slot in which the PDSCH is located has a corresponding relationship with the specific composition of the time slot, or the specific composition of the time slot can be fixed and used in the scheduling time slot.
  • the combination of the values of the start symbol S and the length L, or the combination of the values of the start symbol S and the length L and the frequency domain resource information in the scheduling information for example, a type of frequency domain resource information of the PDSCH carried by the PBCH
  • the value corresponds to a kind of time domain resource allocation information.
  • the information transmission method may further include the following steps:
  • the terminal device determines the time domain resource information of the data channel according to preset first information.
  • the first information includes at least one of the following information: radio frame number, time slot number, cell identification, synchronization signal block index, retransmission times, start symbol and number of symbols of the time slot where the data channel is located, time Gap indication information.
  • the time domain resource information includes at least one of the following information: the time slot where the data channel is located, the start symbol of the data channel in the time slot, and the number of symbols.
  • the terminal device and the network device pre-appoint the first information used to determine the time domain resource information
  • the terminal device can be based on the preset first information.
  • One information, the time domain resource information of the data channel is calculated.
  • the information included in the above-mentioned first information has a certain correspondence with the time-domain resource information, so that when the terminal device acquires or determines at least one of the first information, it can be based on the correspondence between the two, Determine the time domain resource information.
  • the time domain resource information of the data channel refers to the time domain resources occupied by the data channel, which may include the time unit where the data channel is located, for example, a time slot, or the time unit (time slot) where the data channel is located.
  • the terminal device determines the scheduling information of the data channel based on the foregoing steps, that is, the time-domain resource information and frequency-domain resource information where the data channel is located, it can determine the time-frequency resources required by the terminal device and the network device for data transmission.
  • the network device determines the frequency domain indication information of the frequency domain resource information, and transmits the indication information including the frequency domain indication information through a physical broadcast channel, and the terminal device determines the frequency domain according to the above indication information.
  • the frequency domain indicator information of the resource information determines the frequency domain resource information of the data channel according to the frequency domain indicator information, and in this embodiment, the terminal device can determine the time domain resource of the data channel according to the preset first information information.
  • the terminal equipment and the network equipment can send the frequency domain resource information of the data channel carrying system information through the PBCH, which can also receive the frequency domain resource information of the data channel carrying system information without detecting the control channel. Reduce the power consumption and detection complexity of terminal equipment.
  • FIG. 10 is a schematic diagram of interaction in Embodiment 3 of the information transmission method provided by this application.
  • the above S502 can be implemented through the following steps:
  • the network device determines the time domain indication information of the time domain resource information.
  • the time domain indication information includes at least one of the following information: the time slot where the data channel is located, the start symbol and the length of the time slot where the data channel is located.
  • the time domain indication information of the time domain resource information may be determined first.
  • the time domain indication information includes at least one of the following information: the time slot where the data channel is located, the start symbol and the length of the time slot where the data channel is located. That is, the time domain indicator information includes the time slot where the data channel is located, or the time domain indicator information includes the start symbol and length in the time slot where the data channel is located, or the time domain indicator information includes the time slot where the data channel is located. The starting symbol and length of the time slot where the slot and data channel are located.
  • the embodiment of the present application does not limit the specific content included in the time domain indication information, which can be determined according to actual conditions, and will not be repeated here.
  • the time domain resource information carried by the PBCH may include time domain resource allocation information.
  • the network device may reuse the 4-bit time domain resource allocation information in the existing NR system.
  • the value combination of the start symbol S and the length L included in the time slot of the data channel can be restricted to reduce the time domain resource allocation information. Number of bits.
  • the time domain resource information carried by the PBCH also includes the time slot information where the PDSCH carrying SIB1 is located.
  • the network device may reuse the existing Search space 0 information of the type 0 PDCCH, and use the time slot set indicated by the Search space 0 information as the time slot where the PDSCH is transmitted.
  • the network device can also limit the value combinations included in the Search space 0 information to reduce the number of bits of the time slot information where the PDSCH is located.
  • the network device sends the indication information including the time domain indication information through the physical broadcast channel.
  • the network device after the network device determines the time domain indication information according to the above step S1001, it can broadcast the time domain indication information through the PBCH.
  • the terminal device determines the time domain indication information of the time domain resource information according to the foregoing indication information.
  • the time domain indication information includes at least one of the following information: the time slot where the data channel is located, the start symbol and the length of the time slot where the data channel is located.
  • the terminal device when the terminal device receives the instruction information sent by the network device through the PBCH, by analyzing the instruction information, the time domain instruction information of the time domain resource information can be determined.
  • the time domain indication information includes at least one of the following information: the time slot where the data channel is located, the start symbol and the length of the time slot where the data channel is located. That is, in some scenarios, the time domain indicator information may only include the time slot in which the data channel is located or the start symbol and length in the time slot where the data channel is located in the above information. In other scenarios, the time domain indicator information It can include the time slot where the data channel is located, or the start symbol and length of the time slot where the data channel is located.
  • the terminal device determines the time domain resource information of the data channel according to the time domain indication information.
  • the terminal device when the terminal device receives the time domain indication information of the time domain resource, for example, the time slot where the data channel is located, the start symbol and length of the time slot where the data channel is located, etc., It can determine the time domain resource information of the time domain data channel based on at least one of the foregoing information.
  • the time domain resource information includes the information of the time slot where the data channel is located, that is, the information of the time slot where the PDSCH is located.
  • the information of the time slot where the data channel is located can be based on at least one of the following information Sure:
  • the network device carries the time domain resource information of the PDSCH through the PBCH. If the frequency domain resource information of the PDSCH is not carried through the PBCH, the frequency domain resource information can be passed through preset information or preset information. Define the way to indicate.
  • the frequency domain resource information of the data channel is indicated by the preset second information.
  • the second information includes at least one of the following information: frequency domain location information of the synchronization signal block, the number of resources contained in the frequency domain resources of the data channel, the location of frequency domain resources contained in the frequency domain resources of the data channel, and the frequency domain. Offset information.
  • the frequency domain resource information includes at least one of the following information: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.
  • the frequency domain position information of the synchronization signal block may enable the network equipment and the terminal equipment to communicate with the beam position information;
  • the frequency domain resources of the data channel include the number of resources, for example, RB
  • the frequency domain resource position contained in the frequency domain resource of the data channel refers to the position information of the frequency domain resource in the first bandwidth;
  • the frequency domain offset information may be a parameter used to calculate the frequency resource, for example, the frequency resource position of the data channel
  • the specific manifestation of the frequency domain offset information can be determined according to the actual situation, so I won’t repeat it here.
  • At least one type of information in the frequency domain resource information has a corresponding relationship with the time domain resource information.
  • the time domain resource information of the PDSCH is carried by the PBCH, but the frequency domain resource information of the PDSCH is not carried by the PBCH, but is determined according to other information or a predefined manner.
  • the frequency domain resource position of the PDSCH is determined according to the frequency domain position of the SSB and a predefined method; the number of RBs contained in the frequency domain resource of the PDSCH is predefined, for example, the frequency domain resource of the PDSCH is equal to 24 RBs, or the frequency domain resource of the PDSCH
  • the frequency domain resource is equal to the number of RBs in the SSB, that is, 20 RBs.
  • the number of RBs contained in the frequency domain resources of the PDSCH and/or the position of the frequency domain resources may also have a corresponding relationship with the time domain resource information of the PDSCH carried by the PBCH.
  • the value of one type of time domain resource information of the PDSCH carried by the PBCH corresponds to one type of frequency domain resource allocation information.
  • the information transmission method may further include the following steps:
  • the terminal device determines frequency domain resource information of the data channel according to preset second information.
  • the second information includes at least one of the following information: frequency domain location information of the synchronization signal block, the number of resources included in the frequency domain resources of the data channel, and the frequency domain resources included in the frequency domain resources of the data channel Position and frequency domain offset information.
  • the frequency domain resource information includes at least one of the following information: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.
  • the terminal device and the network device pre-appoint the second information for determining the frequency domain resource information
  • the terminal device may be based on the preset first information. Second, the frequency domain resource information of the data channel is calculated.
  • the frequency domain resource information of the data channel refers to the frequency domain resources occupied by the data channel, which may include the first bandwidth where the data channel is located, the frequency domain position information of the first bandwidth, and the frequency domain within the first bandwidth. Resource allocation information, etc.
  • the network device determines the time domain indication information of the time domain resource information, and sends the indication information including the time domain indication information through the physical broadcast channel, so that the terminal device determines the time according to the indication information.
  • Time domain resource information and then determine the time domain resource information of the data channel according to the time domain indication information.
  • the terminal device when the physical broadcast channel does not carry the frequency domain resource information of the data channel, the terminal device according to the preset The second information determines the frequency domain resource information of the data channel.
  • the time domain resource indication of the data channel carrying the SIB1 is realized through the PBCH, and there is no need to detect the time domain resource information of the PDSCH, which reduces the power consumption and detection complexity of the terminal equipment.
  • the embodiment of the present application does not limit the scheduling information of the data channel carried by the PBCH.
  • the embodiment shown in FIG. 6 mainly introduces the scheme of frequency domain resource information of the data channel carried by the PBCH.
  • the exemplary embodiment mainly introduces the solution of the time domain resource information of the data channel carried by the PBCH.
  • the network device may carry the frequency domain resource and time domain resource information of the data channel through the PBCH. The specific implementation of the frequency domain resource and time domain resource information that bears the data channel can be combined with the record of the embodiment shown in FIG. 6 and FIG. 10, and will not be repeated here.
  • the scheduling information of the data channel carried by the PBCH further includes at least one of the following information:
  • Virtual resource block to physical resource block mapping mode For example, Virtual resource block to physical resource block mapping mode, modulation and coding mode, redundancy version information, retransmission times.
  • the information needs to meet at least one of the following conditions:
  • the information is pre-configured, the first information has a corresponding relationship with the time domain resource information or the frequency domain resource information carried by the physical broadcast channel, and the information has a corresponding relationship with other information included in the scheduling information.
  • the PDSCH scheduling related information further includes a virtual RB-to-physical RB mapping mode, modulation and coding mode, and redundancy version, one or more of which may or may not be carried by the PBCH.
  • the virtual RB to physical RB mapping method when the information is not carried by the PBCH, specifically, the virtual RB to physical RB mapping method can be fixed in an interleaved or non-interleaved manner, or the virtual RB to physical RB mapping method It has a corresponding relationship with the time-domain resource information or frequency-domain resource information carried by the PBCH, or the mapping method of virtual RB to physical RB has a corresponding relationship with the modulation and coding method, or the mapping method of virtual RB to physical RB has a redundancy version. Correspondence, or, there is a correspondence between the virtual RB to physical RB mapping method and the number of PDSCH retransmissions.
  • the modulation and coding method when the information is not carried by the PBCH, the modulation and coding method can be a fixed modulation and coding method, or the modulation and coding method has a corresponding relationship with the time domain resource information or frequency domain resource information carried by the PBCH, or modulation There is a corresponding relationship between the encoding method and the retransmission times information carried by the PBCH.
  • the redundancy version when the information is not carried by the PBCH, the redundancy version can be a fixed redundancy version, or the redundancy version has a corresponding relationship with the time domain resource information or frequency domain resource information carried by the PBCH, or the redundancy version The remaining version has a corresponding relationship with the modulation and coding method.
  • the number of retransmissions of PDSCH when the information is not carried by PBCH, the number of retransmissions of PDSCH can be predefined, such as a fixed setting, or the number of retransmissions of PDSCH corresponds to the frequency band, or the number of retransmissions of PDSCH
  • the number of transmissions has a corresponding relationship with the time domain resource information or frequency domain resource information carried by the PBCH, or the number of PDSCH retransmissions has a corresponding relationship with the modulation and coding scheme, or the number of PDSCH retransmissions has a corresponding relationship with the redundancy version.
  • the PBCH can also carry PDSCH scheduling information in addition to time domain resource information and frequency domain resource information, which realizes a way to obtain related scheduling information without detecting PDCCH, reducing the number of terminals.
  • the power consumption and detection complexity of the equipment improve the transmission performance of PDSCH.
  • the part of the information included in the scheduling information is used to determine the other part of the information included in the scheduling information, which reduces the number of bits that the PBCH carries the scheduling information and reduces the information carried by the PBCH redundancy.
  • FIG. 11 is a schematic structural diagram of Embodiment 1 of an information transmission device provided by this application.
  • the device can be integrated in the terminal device, and can also be realized by the terminal device.
  • the device may include: a receiving module 1101 and a processing module 1102.
  • the receiving module 1101 is configured to receive instruction information through a physical broadcast channel
  • the processing module 1102 is configured to determine scheduling information of a data channel according to the indication information, the data channel carrying system messages, and the scheduling information includes at least one of frequency domain resource information and time domain resource information.
  • the processing module 1102 is specifically configured to determine the frequency domain indication information of the frequency domain resource information according to the indication information, and determine the frequency domain indication information according to the frequency domain indication information.
  • the frequency domain indication information includes at least one of the following information: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.
  • the frequency domain resource allocation mode of the frequency domain resource allocation information is type 1.
  • the frequency domain resource allocation information includes: the number of resource blocks or the number of resource block groups.
  • the frequency domain resource allocation information includes: the number of resource blocks and the location information of the starting resource block;
  • the frequency domain resource allocation information includes: the number of resource block groups and the location information of the starting resource block group.
  • the first bandwidths on different time units are the same, and the frequency domain positions of the first bandwidths on different time units are the same.
  • the first bandwidths on at least two time units are different, and/or the frequency domain positions of the first bandwidths on at least two time units are different.
  • the processing module 1102 is further configured to determine the time domain resource information of the data channel according to the preset first information:
  • the first information includes at least one of the following information:
  • the time domain resource information includes at least one of the following information:
  • the time slot where the data channel is located the start symbol and the number of symbols of the data channel in the time slot.
  • At least one type of information in the time domain resource information has a corresponding relationship with the frequency domain resource information.
  • the processing module 1102 is specifically configured to determine the time domain indication information of the time domain resource information according to the indication information, and determine the time domain indication information according to the time domain indication information.
  • Time domain resource information of the data channel
  • the time domain indication information includes at least one of the following information: the time slot where the data channel is located, the start symbol and the length of the time slot where the data channel is located.
  • the information of the time slot where the data channel is located is determined according to at least one of the following information:
  • the processing module 1102 is further configured to determine the frequency domain resource information according to preset second information
  • the second information includes at least one of the following information:
  • Frequency domain position information of the synchronization signal block the number of resources included in the frequency domain resource of the data channel, the frequency domain resource position included in the frequency domain resource of the data channel, and frequency domain offset information;
  • the frequency domain resource information includes at least one of the following information:
  • the first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth are defined by the first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.
  • At least one type of information in the frequency domain resource information has a corresponding relationship with the time domain resource information.
  • the scheduling information further includes at least one of the following information:
  • Virtual resource block to physical resource block mapping mode For example, Virtual resource block to physical resource block mapping mode, modulation and coding mode, redundancy version information, retransmission times.
  • the device provided in this embodiment is used to implement the technical solution on the terminal device side in the embodiment shown in FIG. 5, FIG. 6 or FIG.
  • FIG. 12 is a schematic structural diagram of Embodiment 2 of an information transmission device provided by this application.
  • the device can be integrated in the network equipment, and can also be realized through the network equipment.
  • the device may include: a processing module 1201 and a sending module 1202.
  • the processing module 1201 is configured to determine scheduling information of a data channel, and the data channel carries system messages;
  • the sending module 1202 is configured to send the indication information of the scheduling information through a physical broadcast channel
  • the scheduling information includes at least one of frequency domain resource information and time domain resource information.
  • the processing module 1201 is further configured to determine frequency domain indication information of the frequency domain resource information, where the frequency domain indication information includes at least one of the following information: first bandwidth , Frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth;
  • the sending module 1202 is further configured to send the indication information including the frequency domain indication information through the physical broadcast channel.
  • the frequency domain resource allocation mode of the frequency domain resource allocation information is type 1.
  • the frequency domain resource allocation information includes: the number of resource blocks or the number of resource block groups.
  • the frequency domain resource allocation information includes: the number of resource blocks and the location information of the starting resource block;
  • the frequency domain resource allocation information includes: the number of resource block groups and the location information of the starting resource block group.
  • the first bandwidths on different time units are the same, and the frequency domain positions of the first bandwidths on different time units are the same.
  • the first bandwidths on at least two time units are different, and/or the frequency domain positions of the first bandwidths on at least two time units are different.
  • the time domain resource information of the data channel is indicated by the preset first information
  • the first information includes at least one of the following information:
  • the time domain resource information includes at least one of the following information:
  • the time slot where the data channel is located the start symbol and the number of symbols of the data channel in the time slot.
  • At least one type of information in the time domain resource information has a corresponding relationship with the frequency domain resource information.
  • the processing module 1201 is further configured to determine the time domain indication information of the time domain resource information, and the time domain indication information includes at least one of the following information: The time slot where the data channel is located, the start symbol and the length of the time slot where the data channel is located;
  • the sending module 1202 is configured to send the indication information including the time domain indication information through the physical broadcast channel.
  • the information of the time slot where the data channel is located is indicated by at least one of the following information:
  • the frequency domain resource information is indicated by preset second information
  • the second information includes at least one of the following information:
  • Frequency domain position information of the synchronization signal block the number of resources included in the frequency domain resource of the data channel, the frequency domain resource position included in the frequency domain resource of the data channel, and frequency domain offset information;
  • the frequency domain resource information includes at least one of the following information:
  • the first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth are defined by the first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.
  • At least one type of information in the frequency domain resource information has a corresponding relationship with the time domain resource information.
  • the scheduling information further includes at least one of the following information:
  • Virtual resource block to physical resource block mapping mode For example, Virtual resource block to physical resource block mapping mode, modulation and coding mode, redundancy version information, retransmission times.
  • the device provided in this embodiment is used to implement the technical solution on the network device side in the embodiment shown in FIG. 5, FIG. 6 or FIG.
  • the division of the various modules of the above device is only a division of logical functions, and may be fully or partially integrated into a physical entity during actual implementation, or may be physically separated.
  • these modules can all be implemented in the form of software called by processing elements; they can also be implemented in the form of hardware; part of the modules can be implemented in the form of calling software by processing elements, and some of the modules can be implemented in the form of hardware.
  • the processing module may be a separate processing element, or it may be integrated in a chip of the above-mentioned device for implementation.
  • each step of the above method or each of the above modules can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (FPGA), etc.
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • FPGA field programmable gate arrays
  • the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program codes.
  • CPU central processing unit
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the computer may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • FIG. 13 is a schematic diagram of the structure of the terminal device provided by this application.
  • the terminal device may include: a processor 1301, a memory 1302, a receiver 1303, and an interface 1304 for communicating with a network device.
  • the memory 1302 stores computer execution instructions
  • the processor 1301 executes the computer-executable instructions stored in the memory 1302, so that the processor 1301 executes the technical solution on the terminal device side in the embodiment shown in FIG. 5, FIG. 6 or FIG. 10.
  • FIG. 14 is a schematic diagram of the structure of the network device provided by this application.
  • the network device may include: a processor 1401, a memory 1402, a transmitter 1403, and an interface 1404 for communicating with a terminal device.
  • the memory 1402 stores computer execution instructions
  • the processor 1401 executes the computer-executable instructions stored in the memory 1402, so that the processor 1401 executes the technical solution on the network device side in the embodiment shown in FIG. 5, FIG. 6 or FIG. 10.
  • processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the memory in the embodiments 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 can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • FIG. 15 is a schematic block diagram of a communication system provided by an embodiment of the present application. As shown in FIG. 15, the communication system 1500 includes a terminal device 1501 and a network device 1502.
  • the terminal device 1501 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 1502 can be used to implement the corresponding function implemented by the network device in the above method.
  • the terminal device 1501 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 1502 can be used to implement the corresponding function implemented by the network device in the above method.
  • the present application also provides a computer-readable storage medium in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, they are used to implement the foregoing description of FIG. 5, FIG. 6 or FIG. 10
  • the technical solution on the terminal device side in the embodiment is shown.
  • the present application also provides a computer-readable storage medium in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, they are used to implement the foregoing description of FIG. 5, FIG. 6 or FIG. 10
  • the technical solution on the network device side in the embodiment is shown.
  • the embodiment of the present application also provides a program, which is used to execute the technical solution of the terminal device in the embodiment shown in FIG. 5, FIG. 6 or FIG. 10 when the program is executed by the processor.
  • the embodiment of the present application also provides a program, when the program is executed by the processor, it is used to execute the technical solution on the network device side (base station) in the embodiment shown in FIG. 5, FIG. 6 or FIG. 10.
  • the embodiment of the present application also provides a computer program product, including program instructions, which are used to implement the technical solutions on the terminal device side in the embodiments shown in FIG. 5, FIG. 6 or FIG. 10.
  • the embodiment of the present application also provides a computer program product, including program instructions, which are used to implement the technical solution on the network device side (base station) in the embodiment shown in FIG. 5, FIG. 6 or FIG. 10.
  • the embodiment of the present application also provides a chip, which includes a processing module and a communication interface, and the processing module can execute the technical solution on the terminal device side in the embodiment shown in FIG. 5, FIG. 6 or FIG. 10.
  • the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the aforementioned FIG. 5 ,
  • a storage module such as a memory
  • the storage module is used to store instructions
  • the processing module is used to execute the instructions stored in the storage module
  • the execution of the instructions stored in the storage module causes the processing module to execute the aforementioned FIG. 5 ,
  • FIG. 5 The technical solution on the terminal device side in the embodiment shown in FIG. 6 or FIG. 10.
  • the embodiment of the present application also provides a chip, which includes a processing module and a communication interface, and the processing module can execute the technical solution on the network device side in the embodiment shown in FIG. 5, FIG. 6 or FIG. 10.
  • the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the aforementioned FIG. 5 ,
  • a storage module such as a memory
  • the storage module is used to store instructions
  • the processing module is used to execute the instructions stored in the storage module
  • the execution of the instructions stored in the storage module causes the processing module to execute the aforementioned FIG. 5 ,
  • FIG. 5 The technical solution on the network device side in the embodiment shown in FIG. 6 or FIG. 10.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It 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, and may be in electrical, mechanical or other forms.
  • the processor may be a central processing unit (English: Central Processing Unit, abbreviated as: CPU), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, referred to as DSP), application specific integrated circuit (English: Application Specific Integrated Circuit, referred to as ASIC), etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps in the method disclosed in this application can be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • All or part of the steps in the foregoing method embodiments may be implemented by a program instructing relevant hardware.
  • the aforementioned program can be stored in a readable memory.
  • the program executes the steps of the above-mentioned method embodiments; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, abbreviated as: ROM), RAM, flash memory, hard disk, Solid state hard disk, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.

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Abstract

Les modes de réalisation de l'invention concernent un procédé, un appareil et un dispositif de transmission d'informations, ainsi qu'un support de stockage, qui sont appliqués au domaine technique des communications. Le procédé comprend les étapes suivantes : un dispositif réseau (une station de base) détermine d'abord les informations de planification d'un canal de données, le canal de données transportant un message système, puis les informations d'indication des informations de planification sont envoyées au moyen d'un canal de diffusion physique ; et par conséquent, un dispositif terminal détermine les informations de planification du canal de données en fonction des informations d'indication reçues au moyen du canal de diffusion physique. Dans les modes de réalisation de l'invention, les informations de planification comprennent des informations de ressources de domaine fréquentiel et/ou des informations de ressources de domaine temporel. Ainsi, un dispositif terminal peut toujours acquérir les informations de planification d'un canal de données transportant un message système sans détecter un canal de commande, ce qui simplifie la complexité de détection et réduit la consommation d'énergie du terminal.
PCT/CN2020/080409 2020-03-20 2020-03-20 Procédé, appareil et dispositif de transmission d'informations, et support de stockage WO2021184354A1 (fr)

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