WO2018228562A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

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Publication number
WO2018228562A1
WO2018228562A1 PCT/CN2018/091651 CN2018091651W WO2018228562A1 WO 2018228562 A1 WO2018228562 A1 WO 2018228562A1 CN 2018091651 W CN2018091651 W CN 2018091651W WO 2018228562 A1 WO2018228562 A1 WO 2018228562A1
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WO
WIPO (PCT)
Prior art keywords
system information
terminal
indication
sent
window
Prior art date
Application number
PCT/CN2018/091651
Other languages
English (en)
Chinese (zh)
Inventor
耿婷婷
张宏平
曾清海
刘亚林
郭轶
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201710687843.7A external-priority patent/CN109151737A/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020197023535A priority Critical patent/KR20190103360A/ko
Priority to RU2019128215A priority patent/RU2019128215A/ru
Priority to JP2019545734A priority patent/JP2020517131A/ja
Priority to BR112019018750A priority patent/BR112019018750A2/pt
Priority to CA3049931A priority patent/CA3049931A1/fr
Priority to CN201880038558.5A priority patent/CN111034226A/zh
Priority to EP18818515.1A priority patent/EP3573353B1/fr
Publication of WO2018228562A1 publication Critical patent/WO2018228562A1/fr
Priority to US16/460,711 priority patent/US20190327665A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • the present application relates to the field of mobile communications technologies, and in particular, to a communication method and apparatus.
  • a CU-DU architecture is introduced, and the radio access network side of the distributed radio access network is divided into a central unit (CU). And Distributed Unit (DU).
  • RRC Radio Resource Control
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC medium access control
  • the CU and the DU also have other protocol stacks.
  • the RRC can also be divided.
  • the CU, PDCP, RLC, and MAC protocol stacks are divided into DUs and the like.
  • the present application provides the following technical solutions for implementing broadcast of system information through interaction between a CU and a DU.
  • the application provides a communication method, including: a distributed unit DU broadcasts a first indication and first system information, where the first indication is used to indicate that the first system information is broadcasted; The unit CU sends a second indication, the second indication being used to indicate that the first system information is broadcast.
  • the method after the DU broadcasts the first indication and the first system information, sends a second indication to the CU, to indicate that the first system information is broadcast, so that the CU can determine the DU that broadcasts the first system information, and further,
  • the updated first system information may be sent to the DU, so that the DU broadcasts the updated first system information in time to ensure that the first system information of the DU broadcast is up-to-date, and the broadcast is ensured. The correctness of the system information.
  • the present application provides a communication method, including: a distributed unit DU receives a third indication from a central unit CU, the third indication is used to indicate broadcast of first system information; and the DU broadcasts a fourth indication and The first system information is used to indicate that the first system information is broadcast.
  • the DU receives a third indication from the CU, which is used to indicate that the first system information is broadcasted, and ensures that the received first system information is the latest first system information saved in the CU, and ensures the correctness of the broadcasted system information.
  • the DU receives the first system information from the CU; or the DU receives the first system information and the location from the CU The scheduling information of the first system information.
  • the scheduling information includes at least one of the following: a period of the first system information, a system information window of the first system information, The time at which the first system information is transmitted and the number of times the first system information is transmitted.
  • the DU receives a first request from a terminal, the first request for requesting the first system information.
  • the first request is carried in an MSG1 message or carried in an MSG3 message.
  • the first system information is system information SI or a system information block SIB, and the SI includes a plurality of SIBs.
  • the application provides a device, which may be a chip in a DU or a DU.
  • the device has the function of implementing the DU in the foregoing method embodiment, and the function may be implemented by hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus includes a processing unit and a communication unit, and optionally, a storage unit.
  • the processing unit may be, for example, a processor
  • the communication unit may be, for example, a transceiver
  • the storage unit may be, for example, a memory.
  • the memory is configured to store a computer to execute an instruction
  • the processor is coupled to the memory via the bus, and when the device is in operation, the processor executes the computer-executed instruction stored in the memory to cause the device to execute A communication method as in the above first aspect.
  • the application provides a device, which may be a chip in a DU or a DU, and the device has the function of implementing the DU in the foregoing method embodiment, and the function may be implemented by hardware, or the corresponding software may be executed by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus includes a processing unit and a communication unit, and optionally, a storage unit.
  • the processing unit may be, for example, a processor
  • the communication unit may be, for example, a transceiver
  • the storage unit may be, for example, a memory.
  • the memory is configured to store a computer to execute an instruction
  • the processor is coupled to the memory via the bus, and when the device is in operation, the processor executes the computer-executed instruction stored in the memory to cause the device to execute A communication method as in the second aspect above.
  • the application provides a communication method, including: receiving, by a CU, a second indication from a DU, where the second indication is used to indicate that the first system information is broadcasted; and if the CU determines that the first system information is updated And determining that the DU is broadcasting the first system information, sending the updated first system information to the DU.
  • the method after the DU broadcasts the first system information, sends a second indication to the CU, to indicate that the first system information is broadcast, so that the CU can determine the DU that broadcasts the first system information, and further, when the CU updates the first system.
  • the updated first system information may be sent to the DU, so that the DU broadcasts the updated first system information in time to ensure that the first system information of the DU broadcast is up-to-date, and the correctness of the broadcasted system information is ensured. .
  • the application provides a communication method, including: a CU sending a third indication to a DU, where the third indication is used to indicate that the first system information is broadcasted; and the CU determines that the first system information is updated and Determining that the DU is broadcasting the first system information, and transmitting the updated first system information to the DU.
  • the method after the CU instructs the DU to broadcast the first system information, when the CU updates the first system information, the updated first system information may be sent to the DU, so that the DU broadcasts the updated first system information in time to ensure that the CU updates the first system information.
  • the first system information of the DU broadcast is up-to-date, ensuring the correctness of the broadcasted system information.
  • the CU sends scheduling information of the first system information to the DU; or, the CU sends the first system to the DU Scheduling information of the information and the first system information.
  • the scheduling information includes at least one of the following: a period of the first system information, a system information window of the first system information, The time at which the first system information is transmitted and the number of times the first system information is transmitted.
  • the CU receives a second request from the DU, the second request for requesting the first system information.
  • the first system information is system information SI or a system information block SIB, and the SI includes a plurality of SIBs.
  • the present application provides a device, which may be a chip in a CU or a CU, and has a function of implementing a CU in the foregoing method embodiment, and the function may be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus includes a processing unit and a communication unit, and optionally, a storage unit.
  • the processing unit may be, for example, a processor
  • the communication unit may be, for example, a transceiver
  • the storage unit may be, for example, a memory.
  • the memory is configured to store a computer to execute an instruction
  • the processor is coupled to the memory via the bus, and when the device is in operation, the processor executes the computer-executed instruction stored in the memory to cause the device to execute A communication method as in the above fifth aspect.
  • the present application provides a device, which may be a chip in a CU or a CU, and has a function of implementing a CU in the foregoing method embodiment, and the function may be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus includes a processing unit and a communication unit, and optionally, a storage unit.
  • the processing unit may be, for example, a processor
  • the communication unit may be, for example, a transceiver
  • the storage unit may be, for example, a memory.
  • the memory is configured to store a computer to execute an instruction
  • the processor is coupled to the memory via the bus, and when the device is in operation, the processor executes the computer-executed instruction stored in the memory to cause the device to execute A communication method as in the sixth aspect described above.
  • the present application further provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method of the first aspect described above.
  • the computer can be, for example, a DU.
  • the present application further provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method described in the second aspect above.
  • the computer can be, for example, a DU.
  • the present application further provides a computer readable storage medium having instructions stored therein that, when run on a computer, cause the computer to perform the method of the above fifth aspect.
  • the computer can be, for example, a CU.
  • the present application further provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method described in the sixth aspect above.
  • the computer can be, for example, a CU.
  • the application provides a computer program product.
  • the computer program product includes computer software instructions that are loadable by a processor to implement the flow in the communication method of any of the above first aspects.
  • the application provides a computer program product.
  • the computer program product comprises computer software instructions executable by a processor to implement the flow in the communication method of any of the above second aspects.
  • the application provides a computer program product.
  • the computer program product includes computer software instructions that can be loaded by a processor to implement the flow in the communication method of any of the above fifth aspects.
  • the application provides a computer program product.
  • the computer program product comprises computer software instructions executable by a processor to implement the flow in the communication method of any of the above sixth aspects.
  • the present application further provides a chip, which may be a chip in a DU, the chip includes a processing unit, a transceiver unit, and optionally, a storage unit, the chip may be used to enable the first aspect or The communication method of the second aspect is performed.
  • a chip which may be a chip in a DU, the chip includes a processing unit, a transceiver unit, and optionally, a storage unit, the chip may be used to enable the first aspect or The communication method of the second aspect is performed.
  • the present application further provides a chip, which may be a chip in a CU, the chip includes a processing unit, a transceiver unit, and optionally, a storage unit, and the chip may be used to make the fifth aspect or The communication method of the sixth aspect is performed.
  • a chip which may be a chip in a CU, the chip includes a processing unit, a transceiver unit, and optionally, a storage unit, and the chip may be used to make the fifth aspect or The communication method of the sixth aspect is performed.
  • the present application also provides the following technical solution for implementing broadcast of system information through interaction between the CU and the DU.
  • the present application provides a communication method, including: a distributed unit DU receiving a first indication from a centralized unit CU, the first indication being used to indicate broadcast of first system information; and the DU broadcasting a second indication and location The first system information is used to indicate that the first system information is broadcast.
  • the DU receives the first system information from the CU; or
  • the scheduling information is used to indicate a sending timing of the first system information.
  • the DU receives a third indication from the CU, where the third indication is used to indicate whether the first system information can be outside a system information window corresponding to the first system information.
  • the system information window is sent.
  • the DU broadcasts a fourth indication, where the fourth indication is used to indicate whether the first system information can be performed in a system information window other than the system information window corresponding to the first system information. send.
  • the DU broadcasts the second indication to include:
  • the DU broadcasts SIB1, and the SIB1 includes the second indication.
  • the scheduling information includes at least one of the following:
  • the present application provides a communication method, including: a central unit CU sends a first indication to a distributed unit DU, where the first indication is used to indicate that the first system information is broadcasted; and the CU determines the first When the system information is updated and it is determined that the DU is broadcasting the first system information, the updated first system information is sent to the DU.
  • the CU sends the first system information to the DU;
  • the CU sends the first system information and the scheduling information of the first system information to the DU.
  • the CU sends a third indication to the DU, where the third indication is used to indicate whether the first system information can be outside a system information window corresponding to the first system information.
  • the system information window is sent.
  • the CU receives a request message from the DU, the request message being used to request the first system information.
  • the scheduling information includes at least one of the following:
  • the application provides a device, which may be a chip in a DU or a DU.
  • the device has the function of implementing the DU in the foregoing method embodiment, and the function may be implemented by hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus includes a processing unit and a communication unit, and optionally, a storage unit.
  • the processing unit may be, for example, a processor
  • the communication unit may be, for example, a transceiver
  • the storage unit may be, for example, a memory.
  • the memory is configured to store a computer to execute an instruction
  • the processor is coupled to the memory via the bus, and when the device is in operation, the processor executes the computer-executed instruction stored in the memory to cause the device to execute A communication method as in the above first aspect.
  • the application provides a device, which may be a chip in a CU or a CU, and the device has a function of implementing a CU in the foregoing method embodiment, and the function may be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus includes a processing unit and a communication unit, and optionally, a storage unit.
  • the processing unit may be, for example, a processor
  • the communication unit may be, for example, a transceiver
  • the storage unit may be, for example, a memory.
  • the memory is configured to store a computer to execute an instruction
  • the processor is coupled to the memory via the bus, and when the device is in operation, the processor executes the computer-executed instruction stored in the memory to cause the device to execute A communication method as in the second aspect above.
  • the present application further provides a computer readable storage medium having instructions stored therein that, when run on a computer, cause the computer to perform the method of the first aspect described above.
  • the computer can be, for example, a DU.
  • the present application further provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method of the second aspect described above.
  • the computer can be, for example, a CU.
  • the application provides a computer program product.
  • the computer program product includes computer software instructions that are loadable by a processor to implement the flow in the communication method of any of the above first aspects.
  • the application provides a computer program product.
  • the computer program product comprises computer software instructions executable by a processor to implement the flow in the communication method of any of the above second aspects.
  • the present application further provides a chip, which may be a chip in a DU, the chip includes a processing unit, a transceiver unit, and optionally, a storage unit, the chip may be used to enable the communication of the first aspect. The method is executed.
  • the present application further provides a chip, which may be a chip in a CU, the chip includes a processing unit, a transceiver unit, and optionally, a storage unit, and the chip may be used to enable communication of the second aspect.
  • the method is executed.
  • the present application further provides the following technical solutions for improving the success rate of acquiring system information and reducing power consumption of the terminal, including:
  • the application provides a communication method, including: an access network device sending control information to a terminal, where the control information is used to indicate at least one system information block sent in a first time interval of the first system information window, and The time-frequency resource occupied by the at least one system information block; wherein the at least one system information block is part or all of the system information block in the system information block that can be sent in the first system information window, and then, the access network The device sends at least one system information block indicated by the control information on the time-frequency resource indicated by the control information in the first time interval.
  • the system information block sent by the access network device to the terminal in the first time interval is part of the system information block in the system information block that can be sent in the first system information window, the number of information blocks of the transmitting system can be reduced, thereby improving the terminal. Decoding success rate, reducing power consumption.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource shared by the at least one system information block.
  • the at least one system information block is jointly encoded. In this way, it is convenient to encode.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource occupied by the at least one system information block.
  • the at least one system information block is independently coded. In this way, the terminal can decode only the system information blocks it needs, without decoding the system information blocks that are not needed, and the system information block that needs to be decoded is reduced, so that the decoding success rate can be further improved.
  • the scheduling period of the system information blocks that can be transmitted in the first system information window is the same.
  • the scheduling period of the system information blocks that can be transmitted in the first system information window is different. In this way, the system information blocks originally belonging to different system information windows can be sent in the same system information window, which can solve the delay problem.
  • control information includes a respective system information block type of the at least one system information block.
  • control information includes a first bit bitmap, the bits of the first bit bitmap are in one-to-one correspondence with the system information blocks transmittable in the first system information window, and the at least one system information block The value of the corresponding bit is used to indicate that the at least one type of system information block is transmitted.
  • control information includes the SI RNTI corresponding to each of the at least one system information block.
  • the access network device receives a request message sent by the terminal, and the request message is used to request to acquire the at least one system information block.
  • the request message includes a second bit bitmap
  • the number of bits of the second bit bitmap is the number of system information blocks that the access network device can send
  • the second bit bitmap is used to request to obtain the at least A part or all of a system information block.
  • the access network device sends a third bit bitmap to the terminal, where the number of bits in the third bit bitmap is the number of system information blocks that the access network device can send, and the at least one system information The value of the bit corresponding to the block is used to indicate that the at least one system information block is sent, and the third bit bitmap is used to indicate that the access network device successfully receives the request message.
  • an embodiment of the present invention provides an access network device, where the access network device has the function of implementing an access network device in the foregoing method embodiment.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the access network device includes a processing unit and a transceiver unit, and the processing unit communicates with the terminal through the transceiver unit.
  • an embodiment of the present invention provides an access network device, including: a processor, a memory, where the memory is used to store a computer execution instruction, and the processor is connected to the memory through the bus, when the access network device is running.
  • the processor executes the computer-executed instructions stored by the memory to cause the access network device to perform the communication method of the first aspect described above.
  • the present application provides a communication method, including: receiving, by a terminal, control information from an access network device, where the control information is used to indicate at least one system information block sent in a first time interval of the first system information window, And a time-frequency resource occupied by the at least one system information block; wherein the at least one system information block is part or all of the system information block in the system information block that can be sent in the first system information window; the terminal receives according to the control information At least one system information block sent by the access network device through the time-frequency resource in the first time interval.
  • the system information block sent by the access network device to the terminal in the first time interval is part of the system information block in the system information block that can be sent in the first system information window, the number of information blocks of the transmitting system can be reduced, thereby improving the terminal. Decoding success rate, reducing power consumption.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource shared by the at least one system information block.
  • the at least one system information block is jointly encoded. In this way, it is convenient to encode.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource occupied by the at least one system information block.
  • the at least one system information block is independently coded. In this way, the terminal can decode only the system information blocks it needs, without decoding the system information blocks that are not needed, and the system information block that needs to be decoded is reduced, so that the decoding success rate can be further improved.
  • the scheduling period of the system information blocks that can be transmitted in the first system information window is the same.
  • the scheduling period of system information blocks that can be transmitted within the first system information window is different.
  • control information includes a respective system information block type of each of the at least one system information block.
  • control information includes a first bit bitmap, the bits of the first bit bitmap are in one-to-one correspondence with the system information blocks transmittable in the first system information window, and the at least one system information block The value of the corresponding bit is used to indicate that the at least one type of system information block is transmitted.
  • control information includes the SI RNTI corresponding to each of the at least one system information block.
  • the terminal sends a request message to the access network device, where the request message is used to request to acquire the at least one system information block.
  • the request message includes a second bit bitmap
  • the number of bits of the second bit bitmap is the number of system information blocks that the access network device can send
  • the second bit bitmap is used to request to obtain the at least A part or all of a system information block.
  • the terminal receives a third bit bitmap sent by the access network device, where the number of bits in the third bit bitmap is the number of system information blocks that the access network device can send, and the at least one system The value of the bit corresponding to the information block is used to indicate that the at least one system information block is sent, and the third bit bitmap is used to indicate that the access network device successfully receives the request message.
  • an embodiment of the present invention provides a terminal, where the terminal has a function of implementing a terminal in the foregoing method embodiment.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the terminal includes a processing unit and a transceiver unit, and the processing unit communicates with the access network device through the transceiver unit.
  • an embodiment of the present invention provides a terminal, including: a processor, a memory, a bus, and a communication interface; the memory is configured to store a computer execution instruction, and the processor is connected to the memory through the bus, when the terminal is running And executing, by the processor, the computer-executable instructions stored in the memory to cause the terminal to perform the communication method as in the fourth aspect above.
  • the application provides a communication method, including:
  • the distribution unit DU sends control information to the terminal, where the control information is used to indicate at least one system information block that is sent in the first time interval of the first system information window, and a time-frequency resource occupied by the at least one system information block;
  • the at least one system information block is part or all of the system information blocks in the system information block that can be sent in the first system information window; the DU sends the at least one system information block by using the time-frequency resource in the first time interval.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource shared by the at least one system information block.
  • the at least one system information block is jointly encoded.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource occupied by the at least one system information block.
  • the at least one system information block is independently coded.
  • the scheduling period of the above transmittable system information blocks is the same.
  • the scheduling period of system information blocks that can be transmitted within the first system information window is different.
  • control information includes a respective system information block type of the at least one system information block.
  • control information includes a first bit bitmap, and the bits of the first bit bitmap are in one-to-one correspondence with the system information blocks transmittable in the first system information window, and the at least one system information block The value of the corresponding bit is used to indicate that the at least one system information block is transmitted.
  • control information includes a SI RNTI corresponding to each of the at least one system information block.
  • the DU receives a first request message sent by the terminal, and the first request message is used to request to acquire the at least one system information block.
  • the DU receives system information from the CU, and the system information includes at least a system information block transmitable within the first system information window.
  • the DU sends a second request message to the CU, the second request message is used to request to acquire at least one type of system information, and the DU receives at least one type of system information sent by the CU.
  • the first request message includes a second bit bitmap
  • the number of bits of the second bit bitmap is the number of system information blocks that the access network device can transmit
  • the second bit bitmap is used for Requesting to obtain some or all of the at least one system information block.
  • the DU sends a third bit bitmap to the terminal, where the number of bits of the third bit bitmap is the number of system information blocks that can be sent by the access network device, corresponding to the at least one system information block.
  • the value of the bit is used to indicate that the at least one system information block is sent, and the third bit bitmap is used to indicate that the DU successfully receives the first request message.
  • an embodiment of the present invention provides a DU having a function of implementing a DU in the foregoing method embodiment.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the DU includes a processing unit and a transceiver unit, and the processing unit communicates with the terminal and the CU through the transceiver unit.
  • an embodiment of the present invention provides a DU, including: a processor, a memory, where the memory is used to store a computer execution instruction, the processor is connected to the memory through the bus, and when the DU is running, the processor executes The computer stored in the memory executes instructions to cause the DU to perform the communication method as in the seventh aspect above.
  • the present application further provides a communication method, including: receiving, by a terminal, control information from a distribution unit DU, where the control information is used to indicate at least one system information block sent in a first time interval of the first system information window, And a time-frequency resource occupied by the at least one system information block; wherein the at least one system information block is part or all of the system information block in the system information block that can be sent in the first system information window; the terminal receives according to the control information
  • the DU transmits the at least one system information block by the time-frequency resource in a first time interval.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource shared by the at least one system information block.
  • the at least one system information block is jointly encoded.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource occupied by the at least one system information block.
  • the at least one system information block is independently coded.
  • the scheduling period of the system information blocks that can be transmitted in the first system information window is the same.
  • the scheduling period of system information blocks that can be transmitted within the first system information window is different.
  • control information includes a respective system information block type of the at least one system information block.
  • control information includes a first bit bitmap, and the bits of the first bit bitmap are in one-to-one correspondence with the system information blocks transmittable in the first system information window, and the at least one The value of the bit corresponding to the system information block is used to indicate that the at least one system information block is transmitted.
  • control information includes a SI RNTI corresponding to each of the at least one system information block.
  • the terminal sends a first request message to the DU, where the first request message is used to request to acquire the at least one system information block.
  • the first request message includes a second bit bitmap
  • the number of bits of the second bit bitmap is the number of system information blocks that the access network device can transmit
  • the second bit bitmap is used for requesting acquisition. Part or all of the at least one system information block.
  • the terminal receives a third bit bitmap sent by the DU, where the number of bits in the third bit bitmap is the number of system information blocks that can be sent by the access network device, and the at least one The value of the bit corresponding to the system information block is used to indicate that the at least one system information block is sent, and the third bit bitmap is used to indicate that the DU successfully receives the first request message.
  • the terminal sends a request message to the CU, where the request message is used to request acquisition of at least one system information; and the terminal receives at least one system information sent by the DU.
  • an embodiment of the present invention provides a terminal, where the terminal has a function of implementing a terminal in the foregoing method embodiment.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the terminal includes a processing unit and a transceiver unit, and the processing unit communicates with the DU and the CU through the transceiver unit.
  • an embodiment of the present invention provides a terminal, including: a processor, a memory, where the memory is used to store a computer execution instruction, and the processor is connected to the memory through the bus, when the DU is running, the processor The computer executing the memory stores execution instructions to cause the terminal to perform the communication method as in the above tenth aspect.
  • the present application provides a communication method, including: receiving, by a CU, a second request message from a DU, where the second request message is used to request to acquire at least one type of system information; and the CU sends the requested at least one system information to the DU .
  • the CU independently encodes each system information in the at least one system information, and sends the encoded at least one system information to the DU.
  • the CU jointly encodes the at least one system information and sends the encoded at least one system information to the DU.
  • the present application further provides a communication method, including: receiving, by a CU, a request message from a terminal, the request message is used to request to acquire at least one type of system information; and the CU sends the at least one system information to the DU.
  • the CU independently encodes each system information in the at least one system information, and transmits the encoded at least one system information to the DU.
  • the CU jointly encodes the at least one system information and transmits the encoded at least one system information to the DU.
  • an embodiment of the present invention provides a CU having a function of implementing a CU in the foregoing method embodiment.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the CU includes a processing unit and a transceiver unit, and the processing unit communicates with the terminal and the DU through the transceiver unit.
  • an embodiment of the present invention provides a CU, including: a processor, a memory, where the memory is used to store a computer execution instruction, the processor is connected to the memory through the bus, and when the CU is running, the processor The computer executing the memory store executes instructions to cause the CU to perform the communication method of the thirteenth aspect.
  • the present application provides a computer storage medium for storing computer software instructions for use in an access network device, comprising a program designed to perform the above aspects for an access network device.
  • the present application provides a computer storage medium for storing computer software instructions for use in a terminal, the program comprising the terminal for designing the above aspects.
  • the present application provides a computer storage medium for storing computer software instructions for use in a DU, comprising a program designed to perform DU as described above.
  • the present application provides a computer storage medium for storing computer software instructions for use by a CU, including a program designed to perform the above aspects for a CU.
  • the application provides a computer program product.
  • the computer program product comprises computer software instructions executable by a processor to implement the flow in the communication method of any of the above first aspects.
  • the present application provides a computer program product.
  • the computer program product includes computer software instructions that are loadable by a processor to implement the flow in the communication method of any of the above first aspects.
  • the application provides a computer program product.
  • the computer program product comprises computer software instructions executable by a processor to implement the flow in the communication method of any of the above fourth aspects.
  • the application provides a computer program product.
  • the computer program product includes computer software instructions that can be loaded by a processor to implement the flow in the communication method of any of the above seventh aspects.
  • the application provides a computer program product.
  • the computer program product includes computer software instructions executable by a processor to implement the flow in the communication method of any of the above eleventh aspects.
  • the application provides a computer program product.
  • the computer program product includes computer software instructions executable by a processor to implement the flow in the communication method of any of the fourteenth aspects described above.
  • the present application further provides a chip, including a processor, a transceiver component, and the chip can be used to perform one of the foregoing aspects.
  • the chip further includes a storage unit.
  • the present application also provides the following technical solution for implementing broadcast of system information through interaction between the CU and the DU.
  • the present application provides a communication method, including: a distributed unit DU receives a first request from a terminal, the first request is used to request first system information; and the DU sends a second request to a central unit CU, The second request is for requesting the first system information; the DU receives a first indication from the CU, the first indication is used to indicate that the first system information is broadcasted; and the second broadcasts the second indication and the The first system information is used to indicate that the first system information is broadcast.
  • the DU receives the first system information from the CU.
  • the first system information includes one or more SIBs.
  • the one or more SIBs include SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, SIB9, SIB10, SIB11, or SIB12.
  • the DU broadcasts the second indication that the DU broadcasts the SIB1, and the SIB1 includes the second indication.
  • the SIB1 further includes scheduling information, where the scheduling information includes: a period of the first system information, a system information window of the first system information, and a first system information The start time, or the number of times the first system information is sent.
  • the present application provides a communication method, including: a central unit CU receiving a first request from a distributed unit DU, the first request for requesting first system information; and the CU sending a first to the DU Instructing, the first indication is for indicating to broadcast the first system information.
  • the CU sends the first system information to the DU.
  • the first system information includes one or more SIBs.
  • the one or more SIBs include SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, SIB9, SIB10, SIB11, or SIB12.
  • the present application provides a DU, including a processor and a communication interface, the processor is configured to read and run an instruction from a memory through the communication interface, so that the DU performs the first aspect or the first aspect described above Any of the possible ways of designing.
  • the DU also includes the memory.
  • the present application provides a CU, including a processor and a communication interface, the processor is configured to read and run an instruction from a memory through the communication interface, so that the CU performs the second aspect or the second aspect described above. Any of the possible ways of designing.
  • the CU also includes the memory.
  • the present application further provides a computer readable storage medium having instructions stored therein that, when run on a computer, cause the computer to perform the method of the first aspect described above.
  • the computer can be, for example, a DU.
  • the present application further provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method of the second aspect described above.
  • the computer can be, for example, a CU.
  • the application provides a computer program product.
  • the computer program product includes computer software instructions that are loadable by a processor to implement the flow in the communication method of any of the above first aspects.
  • the application provides a computer program product.
  • the computer program product comprises computer software instructions executable by a processor to implement the flow in the communication method of any of the above second aspects.
  • the present application further provides a chip, which may be a chip in a DU, the chip includes a processing unit, a transceiver unit, and optionally, a storage unit, the chip may be used to enable the communication of the first aspect. The method is executed.
  • the present application further provides a chip, which may be a chip in a CU, the chip includes a processing unit, a transceiver unit, and optionally, a storage unit, and the chip may be used to enable communication of the second aspect.
  • the method is executed.
  • FIG. 1 is a schematic diagram of a possible network architecture of the present application
  • FIG. 2 is a schematic diagram of a device provided by the present application.
  • FIG. 3a is a schematic diagram of a system information window provided by the present application.
  • FIG. 3b is a schematic diagram of another system information window provided by the present application.
  • FIG. 3c is a schematic diagram of another system information window provided by the present application.
  • FIG. 3d is a schematic diagram of another system information window provided by the present application.
  • FIG. 4 is a schematic diagram of a communication method provided by the present application.
  • FIG. 5 is a schematic diagram of another communication method provided by the present application.
  • FIG. 6 is a schematic diagram of another possible network architecture of the present application.
  • FIG. 7 is a schematic diagram of another communication method provided by the present application.
  • FIG. 8 is a schematic diagram of another communication method provided by the present application.
  • FIG. 9 is a schematic diagram of another communication method provided by the present application.
  • FIG. 10 is a schematic diagram of another communication method provided by the present application.
  • Figure 11 is a schematic view of another apparatus provided by the present application.
  • 12(a) to 12(h) are schematic diagrams showing a communication method provided by the present application.
  • FIG. 13 is a schematic structural diagram of a DU provided by the present application.
  • FIG. 14 is a schematic structural diagram of a CU provided by the present application.
  • an access network device notifies a terminal of various information about a system by using system information (SI), for example, network information of a cell in which the terminal is located, information of a registered area, information of a common channel, and others. Information about the community, etc.
  • SI system information
  • the system information can be classified into two types: one is necessary system information transmitted through periodic broadcast, such as minimum SI, and the minimum SI includes cell selection and initial Access information; another system information (other SI) sent for terminal-based requests, such as system information related to cell reselection, system information related to multimedia broadcast multicast service (MBMS), etc.
  • SI system information
  • MBMS multimedia broadcast multicast service
  • the terminal can send a request message to the access network device to obtain the other SI.
  • the access network device sends a other SI, such as a system information block, to the terminal based on the request message of the terminal, and jointly encodes all system information blocks having the same scheduling period, and then broadcasts and transmits the same.
  • a system information block such as a system information block
  • a schematic diagram of a possible network architecture of the present application includes at least one terminal 10 that communicates with the access network device 20 through a wireless interface. For the sake of clarity, only one access network device is shown in the figure. a terminal.
  • a terminal which can also be understood as a user equipment (UE), is a device that provides voice and/or data connectivity to a user, for example, a handheld device or an in-vehicle device having a wireless connection function or a wireless communication function.
  • UE user equipment
  • wearable devices computing devices, control devices or other processing devices connected to wireless modems, as well as various forms of mobile stations (MS), and the like.
  • MS mobile stations
  • Common terminals include: mobile phones, tablets, notebooks, handheld computers, wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • An access network device is a device that accesses a terminal to a wireless network, including but not limited to: an evolved node B (eNB), a radio network controller (RNC), and a node B ( Node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home node B, HNB), baseband unit , BBU), base station (g NodeB, gNB), transmission and receiving point (TRP), transmitting point (TP), mobile switching center, Wifi access point (AP), etc. It is a centralized unit (CU) and a distributed unit (DU) in the CU-DU architecture.
  • a schematic diagram of a device provided by the present application may include at least one processor 21, a communication bus 22, a memory 23, and at least one communication interface 24.
  • the processor 21 can be a general purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present invention.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication bus 22 may include a path for communicating information between the components described above.
  • the communication interface 24 uses devices such as any transceiver for communicating with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), and the like.
  • RAN Radio Access Network
  • WLAN Wireless Local Area Networks
  • the memory 23 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory can exist independently and be connected to the processor via a bus.
  • the memory can also be integrated with the processor.
  • the memory 23 is used to store application code for executing the solution of the present invention, and is controlled by the processor 21 for execution.
  • the processor 21 is configured to execute application code stored in the memory 23.
  • processor 21 may include one or more CPUs, such as CPU0 and CPU1 in FIG.
  • apparatus 200 can include multiple processors, such as processor 21 and processor 28 in FIG. Each of these processors can be a single-CPU processor or a multi-core processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • the device shown in FIG. 2 may be an implementation manner of a terminal in the system architecture shown in FIG. 1 , or may be a chip in a terminal in the system architecture shown in FIG. 1 , and the device may be used to execute The communication method of the present application.
  • the device 200 may further include an output device 25 and an input device 26.
  • Output device 25 is in communication with processor 21 and can display information in a variety of ways.
  • the output device 25 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. Wait.
  • Input device 26 is in communication with processor 21 and can accept user input in a variety of ways.
  • input device 26 can be a mouse, keyboard, touch screen device, or sensing device, and the like.
  • the device 200 can be a general purpose device or a dedicated device.
  • the device 200 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet, a wireless terminal device, a communication device, an embedded device, or the like in FIG. Structured equipment. This application does not limit the type of device 200.
  • PDA personal digital assistant
  • the terminal in FIG. 1 may be the device shown in FIG. 2, and one or more software modules are stored in the memory of the terminal.
  • the terminal can implement the communication method of the present application by implementing the software module through the processor and the program code in the memory.
  • the apparatus shown in FIG. 2 may also be an implementation manner of an access network device in the system architecture shown in FIG. 1, or may be in an access network device in the system architecture shown in FIG. A chip, the apparatus can be used to perform the communication method of the present application.
  • the access network device in FIG. 1 may be the device shown in FIG. 2, and one or more software modules are stored in a memory of the access network device.
  • the access network device can implement the communication method of the present application by implementing a software module through a processor and program code in the memory.
  • a system information block includes a plurality of types, for example, including SIB1, SIB2, SIB3, ..., SIB12, and other SIBs, for SIBs that can be scheduled based on a request of a terminal, such as SIB3, ..., SIB12.
  • the access network device may send the terminal to the terminal based on the request of the terminal.
  • the system information block may be sent to the terminal by the access network device shown in FIG.
  • SIB system information
  • SIB system information
  • the SIB has a scheduling period. Different SIBs may have the same scheduling period or different scheduling periods. For example, SIB3, SIB4, and SIB5 have the same scheduling period, both of which are 160 milliseconds (ms), such as SIB6, SIB7, and SIB8. Have the same scheduling period, both 320ms, and so on.
  • ms 160 milliseconds
  • SIB6, SIB7, and SIB8 Have the same scheduling period, both 320ms, and so on.
  • the SIB can be associated with a system information window (SI window), and one system information window includes one or more time intervals.
  • SI window system information window
  • the time interval may be a transmission time interval (TTI), or may be other time length parameters.
  • TTI transmission time interval
  • An SIB can be sent in one time interval or multiple time intervals within a system information window.
  • the present application has at least the following implementations:
  • Method 1 The scheduling period of the SIB in a system information window is the same
  • SIB3, SIB4, and SIB5 have the same scheduling period, both of which are 160 ms, which are all sent in the system information window W1, and can also be understood as SIB3.
  • SIB4 and SIB5 are associated with the system information window W1;
  • SIB6, SIB7, and SIB8 have the same scheduling period, both of which are 320 ms, both of which are transmitted in the system information window W2, and can also be understood as SIB6, SIB7, and SIB8 associated system information window W2, different
  • the system information window has the same length, that is, the same duration.
  • the system information window W1 includes one or more time intervals.
  • part or all of the SIB6, SIB7, and SIB8 may be in the system information window W1.
  • a time interval transmission may be sent in the first time interval of W1, may be sent in the last time interval of W1, may also be sent in a certain time interval in the middle of W1, and may also be in multiple time intervals of W1. Send and so on.
  • the time in which the time domain overlaps refers to an integer multiple of the least common multiple with different scheduling periods.
  • the scheduling period of SIB3, SIB4, and SIB5 is 160 ms
  • the scheduling period of SIB6, SIB7, and SIB8 is 320 ms
  • the least common multiple of the scheduling period is 320. Therefore, the time of overlapping time domain refers to an integer multiple of 320 ms such as 0 ms, 320 ms, 640 ms, and so on. time.
  • FIG. 3a A possible implementation for this problem is shown in Figure 3a, in which the system information windows with overlapping time domains are separated in the time domain.
  • the system information overlap existing in the time domain may be separated in the time domain according to the order of the system information blocks of different scheduling periods in the scheduling information.
  • the order of the SIB3, the SIB4, and the SIB5 in the scheduling information is that the order of the system information SI1, SIB6, SIB7, and SIB8 in the scheduling information is the system information SI2, and the system information window W2 is moved from the location of the system information window W1.
  • the system information window W1 and the system information window W2 are next to each other, and there is neither overlap nor gap, that is, the SIB in the system information window W1 is scheduled first, followed by the scheduling system information window W2.
  • SIB SIB.
  • Method 2 The scheduling period of the SIB in a system information window is different
  • the scheduling period of the SIBs in a system information window is different.
  • the scheduling periods of all the SIBs in the system information window are different, that is, the scheduling periods of any two SIBs are different, or the scheduling periods of some SIBs may be the same.
  • the scheduling period of some SIBs is different.
  • the system overlaps from the time domain, and the system starts.
  • the information window W1 occupies 0 to 60 ms
  • the system information window W2 occupies 61 to 120 ms. That is, the system information SIB3, SIB4, and SIB5 are transmitted to the terminal within 0 to 60 ms from the starting position, and the system information SIB6, SIB7, and SIB8 are at the distance.
  • the system sends the system information to the terminal within 61 to 120 ms.
  • the transmission delay condition is that the access network device needs to send the system information within 150 ms.
  • the system information SIB3 SIB4, SIB5, SIB6, SIB7, and SIB8 all satisfy the transmission delay condition.
  • SIB3, SIB4, and SIB5 are still transmitted in W1, and SIB6, SIB7, and SIB8 are transmitted in W2.
  • the delay threshold may be sent by the access network device to the terminal, or may be predefined by the protocol.
  • the access network device may indicate whether each SIB needs to meet the transmission delay condition.
  • the access network device can directly indicate whether the SIBs of different scheduling periods need to be sent in the same SI window at the time when the time domain overlaps, or whether the SIs of different scheduling periods need to overlap in the time domain. Sent in the same SI window. It can be understood that the access network device can further indicate whether the SI window corresponding to the SI needs to be reserved after the different SIs are sent in the same SI window. Or, after the SI is sent by other SI windows, whether the SI window corresponding to the SI needs to be reserved may also be a protocol pre-defined.
  • the access network device may send the SIB6, the SIB7, and the SIB8 to the terminal after the 100th ms, and thus exceeds the delay threshold of 100ms.
  • the SIB6 and the SIB7 in the W2 may be The SIB8 is also sent in W1, as shown in FIG. 3b, which is another schematic diagram of the system information window provided by the present application.
  • the system information in the system information window W2 is sent together in the system information window W1, so that Solve the delay problem.
  • the delay threshold may be sent by the access network device to the terminal, or may be predefined by the protocol.
  • the access network device may indicate whether each SIB needs to meet the transmission delay.
  • the order in the scheduling information is system information SI3.
  • the system information periods of the SIBs of the three different scheduling periods need to be sequentially shifted and transmitted.
  • the system information window W1 occupies 0 to 60 ms from the start time, and the system information window W2 occupies 61 to 120 ms.
  • the system information SIB3, SIB4, and SIB5 are transmitted to the terminal within 0 to 60 ms from the start position, and the system information SIB6, SIB7,
  • the SIB8 is transmitted to the terminal within 61 to 120 ms from the start position, and the system information SIB10 and SIB11 are transmitted to the terminal within 121 to 180 ms from the start position. That is, the system information window W1 occupies 0 to 60 ms, the system information window W2 occupies 61 to 120 ms, and the system information window W3 occupies 121 to 180 ms.
  • the access network device indicates that the SIB3, the SIB4, the SIB5, the SIB6, the SIB7, and the SIB8 need to meet the transmission delay condition, and the transmission delay condition, that is, the transmission delay needs to be less than or equal to 100ms; the SIB10 and the SIB11 do not need to meet the transmission delay. condition. If the delay threshold of the transmission delay of the system information is 100 ms, the transmission delay of SIB3, SIB4, and SIB5 is 100 ms, the transmission delay of SIB6, SIB7, and SIB8 does not satisfy 100 ms, and the transmission delay of SIB10 and SIB11 is 121. ⁇ 180ms, but SIB10 and SIB11 do not need to meet the transmission delay condition.
  • SIB6, SIB7, and SIB8 in W2 can also be transmitted in W1.
  • the system information window W2 does not transmit data
  • the system information window W2 is still retained, that is, the terminal still needs W1 to 121 to 180 ms to receive the SIB10 and the SIB11.
  • the system information window W2 can be cancelled, that is, the terminal can receive the SIB10 and the SIB11 from the system information window W3 of 61 to 120 ms.
  • the delay threshold may be sent by the access network device to the terminal, or may be predefined by the protocol.
  • the access network device can directly indicate whether the SIBs of different scheduling periods need to be sent in the same SI window at the time when the time domain overlaps, or whether the SIs of different scheduling periods need to overlap in the time domain. Sent in the same SI window. It can be understood that the access network device can further indicate whether the SI window corresponding to the SI needs to be reserved after the different SIs are sent in the same SI window. Or, after the SI is sent by other SI windows, whether the SI window corresponding to the SI needs to be reserved may also be a protocol pre-defined.
  • the access network device can directly put all the system information blocks of different periods. In the same system information window.
  • the network side also needs to indicate whether the SIBs indicating different scheduling periods need to be sent in the same SI window at the time when the time domain overlaps, or whether the SIs in different scheduling periods overlap in the time domain need to be in the same SI window. send.
  • the access network device can further indicate whether the SI window corresponding to the SI needs to be reserved after the different SIs are sent in the same SI window. Or, after the SI is sent by other SI windows, whether the SI window corresponding to the SI needs to be reserved may also be a protocol pre-defined.
  • SIBs with different scheduling periods can be associated with one system information window.
  • the SIBs scheduled in different system information windows at the moment may be placed at the beginning of the time. Scheduling within the system information window. For example, when the system information window W1 and the system information window W2 overlap in the time domain, the time domain overlap time starts, and the time domain W1 is before W2, and the SIB3, SIB4, SIB5, and system information window in the system information window W1 can be SIB6, SIB7, and SIB8 in W2 are all sent in the system information window W1. For the system information window where no time domain overlap occurs, only the original SIB is still sent, as shown in Fig. 3b, and some of the system information windows are in W1. Only system information SIB3, SIB4, SIB5 are still transmitted.
  • the above manner may be pre-agreed by the network side and the terminal, thereby ensuring that the terminal can acquire the system information block in the corresponding system information window.
  • the access network device may also indicate whether an SI window needs to be reserved.
  • whether the SI window corresponding to the SI needs to be reserved may be pre-defined by the protocol, and the UE determines whether the SI window corresponding to the SI is reserved according to a predefined manner of the protocol.
  • the scheduling period of SIB3, SIB4, and SIB5 is 160 ms, and the order in the scheduling information is system information SI1; the scheduling period of SIB6, SIB7, and SIB8 is 320 ms, and the order in the scheduling information is The scheduling period of the system information SI 2; SIB10 and SIB11 is 640 ms, and the order in the scheduling information is system information SI 3.
  • the system information window W1 occupies 0 to 60 ms, and the system information window W2 occupies 61 to 120 ms, that is, the system information SIB3, SIB4, and SIB5 are transmitted to the terminal within 0 to 60 ms from the starting position, and the system The information SIB6, SIB7, and SIB8 are transmitted to the terminal within 61 to 120 ms from the start position, and the system information SIB10 and SIB11 are transmitted to the terminal within 121 to 180 ms from the start position.
  • the access network device may further indicate whether the SI window corresponding to the SI2 is reserved at the time when the time domain overlaps, or overlap in the time domain. Whether the SI window corresponding to the SI2 is reserved may be a protocol pre-defined. The UE determines whether the SI window corresponding to the SI2 is reserved according to the indication of the access network device or a predefined manner of the protocol.
  • FIG. 3c and 3d a schematic diagram of a system information window in another high frequency scenario provided by the present application.
  • the system information window shown in Figure 3c corresponds to the system information window shown in Figure 3a.
  • the device shown in Figure 3c is generally applicable to high-frequency scenarios.
  • the access network device uses the beam to scan.
  • the duration of the system information window needs to be an integer multiple of the beam scanning period.
  • the access network device needs to scan six times to provide services to the terminal devices in all directions. The example is performed in one scan cycle.
  • the duration of the system information window W1 is long, and the SIB in the system information window W2 needs to wait for a long time to transmit, resulting in a large delay in system information transmission in W2.
  • a system information window as shown in FIG. 3d can be formed, as shown in FIG. 3d.
  • the illustrated communication method can solve the delay problem existing in the communication method shown in Fig. 3c.
  • the time for transmitting the system information block once in a system information window is called a time interval, and a time interval is associated with a control information, and the control information is sent by the access network device to the terminal, indicating that the system information window is sent in a certain time interval.
  • a method for transmitting a system information block may be: the access network device jointly encodes all system information blocks having the same scheduling period into one radio resource control (RRC) message, and then performs scheduling.
  • the RRC message is broadcast during the period.
  • the access network device jointly encodes SIB3, SIB4, and SIB5 into one RRC message, and then broadcasts in one or more time intervals within the system information window W1.
  • the request message requests at least one of the system information blocks in the same scheduling period.
  • the channel can be monitored in the corresponding system information window W1, and the required system information block can be obtained therefrom.
  • the terminal 1 needs to acquire the SIB3, the terminal 1 is The system information window W1 listens to the channel, acquires the RRC message, and obtains the SIB3, SIB4, and SIB5 by decoding the RRC message, and obtains the required SIB3 therefrom.
  • the terminal 2 needs to acquire the SIB7 and the SIB8, the terminal 2 is in the system information window.
  • the W2 listens to the channel and acquires the RRC message. By decoding the RRC message, the SIB6, the SIB7, and the SIB8 are obtained, and the required SIB7 and SIB8 are obtained therefrom.
  • the above implementation has the problem of high overhead and high failure rate of terminal decoding, because the access network device jointly encodes all the system information blocks that can be sent in the system information window into one RRC message, resulting in an increase in the information that the terminal needs to decode.
  • the large decoding failure rate also brings more overhead.
  • the present application provides a communication method, which is applicable to the system architecture shown in FIG. 1, and the method is applicable to any system information window diagram of FIG. 3a to FIG. 3d. include:
  • Step 401 The access network device sends control information to the terminal, where the terminal receives control information sent by the access network device.
  • the control information is used to indicate at least one system information block transmitted in a first time interval of the first system information window, and a time-frequency resource occupied by the at least one system information block.
  • the at least one system information block is a part of a system information block that can be sent in the first system information window, and the at least one system information block refers to a system information block that needs to be sent in the first time interval.
  • the system information block transmittable within the first system information window refers to a system information block that can be transmitted in the first system information window, or is understood to be a system information block that is determined by the network side to be transmitted within the first system information window.
  • the SIBs that can be sent in the first system information window are SIB3, SIB4, and SIB5, and the first system information window includes one or more time intervals, one of which is When the SIB is transmitted in the time interval, the time interval is referred to as a first time interval, and the SIB transmitted in the first time interval is a partial system information block in SIB3, SIB4, and SIB5. It can also be understood that the at least one system information block sent in the first time interval is a system information block that can be sent in the first system information window, and the SIBs that need to be sent in the first time interval have the same scheduling period.
  • SIB3, SIB4, and SIB5 may be transmitted at W1.
  • SIB3, SIB4, and SIB5 are each independently coded, for example, into three RRC messages.
  • the terminal can obtain the required SIB from it without receiving SIB3, SIB4 and SIB5.
  • the access network device may also send all SIBs of W1, where each SIB is independently coded, which is advantageous for other SIBs to be successfully received when partial SIB reception fails. For example, when the SIB3 fails to receive, SIB4 and SIB5 can be successfully received.
  • the SIBs that can be sent in the first system information window are SIB3, SIB4, SIB5, SIB6, SIB7, and SIB8, and are sent in the first time interval.
  • the SIB is a partial system information block in SIB3, SIB4, SIB5, SIB6, SIB7, and SIB8, and the scheduling period of the SIB to be transmitted in the first time interval may be different.
  • whether the system information window is selected in the manner shown in FIG. 3a or in the manner shown in FIG. 3b may be determined by the network side, or pre-agreed by the terminal and the network side. Generally, if the transmission delay of the system information is long, the system information may be sent in the manner shown in FIG. 3b, that is, when the transmission delay of the system information block in this application does not satisfy the transmission delay condition, the map may be adopted. The system information is sent in the manner shown in 3b.
  • control information may be located on the downlink control information (DCI), or on the physical downlink control channel (PDCCH), or on the enhanced physical downlink control channel (enhanced physical).
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • enhanced physical downlink control channel enhanced physical downlink control channel
  • EPDCCH downlink control channel
  • NPDCCH narrowband physical downlink control channel
  • the control information indicates two aspects, on the one hand, indicating one or several SIBs to be transmitted in the first time interval within the first system information window, and on the other hand, indicating the occupation of the SIBs to be transmitted.
  • the location of the time-frequency resource It can be understood that the positions of the time-frequency resources occupied by the SIBs to be transmitted may be different or the same.
  • Step 402 The access network device sends at least one system information block by using a time-frequency resource in a first time interval.
  • the at least one system information block is a system information block sent by the control information in a first time interval of the first system information window, where the time-frequency resource is a time-frequency resource occupied by the at least one system information block.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource shared by the at least one system information block, and the shared time-frequency resource refers to the at least one to be sent.
  • a time-frequency resource allocated by the system information block, the time-frequency resource is as a whole.
  • the joint coding may be used to jointly encode the SIBs to be transmitted in the first time interval, and share the same.
  • the time-frequency resources are sent to the terminal.
  • joint coding can also be understood as unified coding. Joint coding means that at least two SIBs to be transmitted in a time interval are jointly coded and transmitted to a terminal through a common time-frequency resource.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource occupied by the at least one system information block.
  • an independent coding manner may be adopted.
  • the SIBs to be sent in the first time interval are separately coded and respectively sent to the terminal through the time-frequency resources occupied by them.
  • joint coding may mean that multiple system information blocks are sent in one radio resource control (RRC) message
  • independent coding may mean that each system information block is separately sent in one radio resource control message.
  • Step 403 The terminal acquires the at least one system information block on the time-frequency resource occupied by the at least one system information block in the first time interval.
  • the access network device may perform some or all of the steps in the above embodiments, and the steps or operations are merely examples, and the present application may also perform other operations or variations of various operations. Moreover, the various steps may be performed in a different order as presented in the above-described embodiments, and in some implementations, it is possible that not all of the operations in the above-described embodiments are performed.
  • the system information block sent by the access network device to the terminal in the first time interval is part of the system information block in the system information block that can be sent in the first system information window, thereby reducing the number of sending system information blocks. , thereby improving the decoding success rate of the terminal and reducing power consumption.
  • the access network device indicates, by using the control information, the system information block to be sent in the first time interval, and the time-frequency resources occupied by the system information block sent in one time interval may be the same, or may be different.
  • the time-frequency resource of the system information block is indicated by the control information.
  • the terminal can obtain the desired system from the corresponding time-frequency resource location according to its own needs.
  • the information block can realize the system information block required for individual decoding, and does not need to decode all system information blocks that can be sent by one system information window, thereby improving the decoding success rate and reducing the overhead of the terminal.
  • the time-frequency resources occupied by the system information blocks transmitted in one time interval are the same, if the number of system information blocks transmitted in one time interval is less than the system information window in the time interval to which the time interval belongs, The number of system information blocks, although the terminal needs to decode all the received system information blocks, the number of system information blocks that need to be decoded is reduced, thereby improving the terminal decoding success rate and reducing overhead.
  • the system information block sent by the access network device to the terminal in the first time interval is all system information blocks in the system information block that can be sent in the first system information window, and is within a time interval.
  • the transmitted system information blocks respectively occupy different time-frequency resources.
  • the access network device sends all the system information blocks in the system information block that can be sent in the first system information window, but at different time frequencies
  • the system transmits the information, so the terminal can obtain the desired system information block from the corresponding time-frequency resource location according to its own needs, and can implement the system information block required for decoding separately, without decoding all the system information blocks sent by the access network device. Therefore, the terminal decoding success rate and the overhead can be improved.
  • the terminal may determine, according to the delay threshold and the indication information sent by the access network device, a system information window for receiving the system information block.
  • a system information window for receiving the system information block.
  • the access network device sends the control information to the terminal in at least the following manners:
  • the control information includes the type of the system information block to be sent and the time-frequency resource occupied by the system.
  • the type of the system information block to be transmitted and the time-frequency resource in the control information are explicitly included in the control information, and the time-frequency resources of each system information block may be the same or different.
  • the type of each system information block may be differentiated by the identity of the system information block. For example, if the system information block sent in the first time interval is SIB3 or SIB5, the information contained in the control information is displayed in a tabular form, as shown in Table 1-1, where the time frequency of SIB3 and SIB5 is located. The locations of the resources are the same; as shown in Table 1-2, where the time-frequency resources of SIB3 and SIB5 are located differently.
  • the time-frequency resource location where each SIB is located may be sent in the order of the number of the SIBs.
  • the time-frequency resource locations where the SIBs are located are sent in ascending order according to the sequence number of the SIB.
  • the table form only takes an example here, and does not mean that its specific implementation is limited to the form of a table.
  • Table 1-1 The first implementation of control information (occupying the same time-frequency resources)
  • the type of at least one type of system information block to be sent in the first time interval of the first system information window is carried in the control information, which is convenient to implement.
  • the control information includes a first bit bitmap and a time-frequency resource occupied by the system information block.
  • the control information indicates, by using the first bit bitmap, a type of at least one system information block to be sent in a first time interval of the first system information window, where the number of bits in the first bit bitmap is the first system.
  • the number of system information blocks that can be sent in the information window is as shown in FIG. 3a. If the first system information window is W1, since the system information blocks that can be sent in the first system information window are SIB3, SIB4, and SIB5, the first The bit number of the bit bitmap is 3; as shown in FIG. 3b, if the first system information window is W1, since the system information blocks that can be sent in the first system information window are SIB3, SIB4, SIB5, SIB6, SIB7, and SIB8, Then the number of bits in the first bit bitmap is 6.
  • the bit of the first bit bitmap corresponds to the system information block transmitable in the first system information window, and the bit corresponding to the at least one system information block sent in the first time interval in the first bit bitmap And a value, configured to send at least one system information block sent in the first time interval.
  • the bits of the first bit bitmap are from left to right, and the serial numbers of the corresponding SIBs are sequentially increased, or the bits of the first bit bitmap are from left to right, and the serial numbers of the corresponding SIBs are sequentially decreased. small.
  • the bit number of the bit bitmap is 3 bits, for example, the bit position.
  • the three bits of the figure are used to indicate whether to send SIB3, SIB4, or SIB5 from left to right, or may be used to indicate whether to send SIB5, SIB4, or SIB3 from left to right.
  • the three bits of the bit bitmap are used to indicate whether to send SIB3, SIB4, and SIB5 as an example, with "1" for transmission, and "0" for no transmission, if the access network device is the first at W1.
  • the SIB3 and SIB5 are transmitted in the time interval, and the bit bitmap is 101. If the access network device transmits SIB3 and SIB4 in the first time interval of W1, the bit bitmap is 110, and so on.
  • the system information blocks that can be transmitted in W1 are SIB3, SIB4, SIB5, SIB6, SIB7, and SIB8.
  • the number of bits in the bit bitmap is 6 bits, for example, 6 bits of the bit bitmap are used to indicate whether to transmit SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, respectively, from left to right, or may be, from left to right, respectively Send SIB5, SIB4, SIB5, SIB6, SIB7, and SIB8.
  • the 6 bits of the bit bitmap are used to indicate whether to send SIB3, SIB4, SIB5, SIB6, SIB7, and SIB8 as an example, with "1" for transmission, and "0" for no transmission, if the access network The device transmits SIB3, SIB5, and SIB6 in the first time interval of W1, and the bit bitmap is 101100. If the access network device sends SIB3, SIB4, and SIB7 in the first time interval of W1, the bit bitmap is 110010, and the like. .
  • control information also indicates the time-frequency resource location occupied by the system information block transmitted in the first time interval, and the time-frequency resources occupied by the system information blocks may be the same or different.
  • the system information block sent in the first time interval is SIB3 or SIB5
  • the information contained in the control information is displayed in a tabular form, as shown in Table 2-1, where the time frequency of SIB3 and SIB5 is located.
  • the location of the resource is the same; as shown in Table 2-2, where the time-frequency resources of the SIB3 and the SIB5 are located differently, for example, the time-frequency resource location where each SIB is located may be sent according to the sequence number of the SIB.
  • Table 2-2 the time-frequency resource location where each SIB is located is sent in ascending order according to the sequence number of the SIB.
  • the table form only takes an example here, and does not mean that its specific implementation is limited to the form of a table.
  • the time-frequency resource can be PDSCH.
  • the control information carries a bit bitmap to indicate the type of the system information block.
  • the signaling overhead can be saved.
  • each system information block needs at least 4 bits (2 to the 4th power equal to 16) for indicating, in the second mode, since the number of bits of the first bit bitmap is equal to the first system information window,
  • the number of system information blocks for example, the number of system information blocks that can be transmitted in the first system information window is three, and only a 3-bit bit bitmap is required, thereby reducing signaling overhead.
  • the control information includes the SI RNTI corresponding to the system information block sent in the first time interval and the time-frequency resource occupied by the system information block.
  • the control information includes at least one System Information Radio Network Temporary Identifier (SI RNTI), and each SI RNTI corresponds to one system information block, that is, the system information block sent in the first time interval.
  • SI RNTI System Information Radio Network Temporary Identifier
  • Different SI RNTIs are used for identification, and different time-frequency resources can be descrambled using different SI-RNTIs to obtain corresponding system information blocks. For example, if the system information block sent in the first time interval is SIB3 or SIB5, the information contained in the control information is displayed in a tabular form, as shown in Table 3-1, where the time frequency of SIB3 and SIB5 is located.
  • the location of the resource is the same; as shown in Table 3-2, where the time-frequency resources of the SIB3 and the SIB5 are located differently, for example, the time-frequency resource location where each SIB is located may be sent according to the sequence number of the SIB.
  • the time-frequency resource location where each SIB is located is sent in ascending order according to the sequence number of the SIB.
  • the table form only takes an example here, and does not mean that its specific implementation is limited to the form of a table.
  • Table 3-1 The third implementation of control information (occupying the same time-frequency resources)
  • SI RNTI3 can be used to descramble SIB3
  • SI RNTI5 can be used to descramble SIB5
  • time-frequency resource can be PDSCH.
  • different SI RNTIs are used to indicate different system information blocks, so that the terminal is not prone to errors and improve accuracy when descrambling.
  • the access network device further receives a request message sent by the terminal, where the request message is used to request to acquire at least one system information block, and since multiple terminals may send a request message to the access network, both requests are requested.
  • the system information block is obtained, so there is competition. If a terminal successfully competes, that is, the terminal successfully receives the request message sent by the terminal, the access network device sends a response message to the terminal, indicating that the request message is successfully received.
  • Step 501 The terminal sends a request message to the access network device, where the access network device receives the request message sent by the terminal.
  • the request message is used to request a system information block.
  • the request message may include a second bit bitmap, where the number of bits of the second bit bitmap is a quantity of system information blocks that the access network device can send, and the bit bitmap is used to indicate at least one of the requests.
  • a system information block that is, a terminal requests a system information block through a bit bitmap.
  • the number of system information blocks that can be sent by the access network device refers to the number of system information blocks that can be sent by the access network device based on the terminal request.
  • the number of system information blocks that the access network device can send based on the terminal request is 10
  • the number of bits of the second bit bitmap sent by the terminal to the access network device is 10, for example, the second bit bitmap.
  • the bits indicate SIB3 to SIB12 in order from left to right. If the bit bitmap transmitted by the terminal 1 to the access network device is 1000000000, it indicates that the terminal 1 requests SIB3.
  • the request message carries a specific SIB type, which is used to indicate the requested system information block.
  • Step 502 The access network device sends a response message to the terminal, where the terminal receives the response message sent by the access network device.
  • the terminal requests the system information block in a bit bitmap manner, for example, the request message sent by the terminal to the access network device includes the second bit bitmap
  • the second bit bitmap sent by the terminal may be directly sent to the terminal through the response message.
  • the terminal receives the second bit bitmap sent by the access network device, determining that the second bit bitmap is the same as the second bit bitmap sent by the terminal, the terminal determines that the corresponding system information block request is successfully sent, and thus does not need to send the request again. Message.
  • the terminal receives the system information block sent by the access network device in the corresponding system information window.
  • the access network device determines that the terminal 1 requests the success, the response message sent to the terminal includes The bit bitmap 1000000000, informing the terminal that the request is successful, the access network device will send SIB3.
  • the response message sent by the access network device to the terminal includes a third bit bitmap, where the number of bits of the third bit bitmap is a system information block that can be sent by the access network device.
  • the number, the value of the bit corresponding to the at least one system information block, is used to indicate that the at least one system information block is transmitted.
  • the third bit bitmap is used to indicate that the access network device successfully receives the request message, and after receiving the third bit bitmap sent by the access network device, the terminal further determines whether the requested system information block is successful.
  • step 501 the terminal 1 requests the access network device to request the system information block SIB3, and the terminal 2 requests the system information block SIB7, and the third bit bitmap sent by the access network device to the terminal 1 and the terminal 2 is 1000100000. , indicating that the system information blocks to be sent by the access network device in the time interval of the corresponding system information window are SIB3 and SIB7, respectively.
  • the terminal when receiving the response message sent by the access network device, the terminal obtains the third bit bitmap 1000100000 from it, and determines that the access network device will send the SIB3, so the terminal 1 determines that the access network device successfully receives.
  • the request message sent to the terminal 1 for the terminal 2, when receiving the response message sent by the access network device, the terminal obtains the third bit bitmap 1000100000 from the terminal, and determines that the access network device will send the SIB7, therefore, the terminal 2 It can be determined that the access network device successfully receives the request message sent by the terminal 2.
  • the terminal 1 determines that the SIB7 needs to be requested after receiving the third bit bitmap, since the terminal 1 determines that the access network device transmits the SIB7 according to the third bit bitmap, the terminal does not need to Resending the request message, because the terminal 1 has determined that the access network device will send the SIB7 based on the third bit bitmap in the response message sent by the access network device, and the terminal 1 only needs to be ready to receive in the corresponding system information window. Therefore, the implementation can reduce the signaling overhead of the terminal 1; likewise, for the terminal 2, the signaling overhead can also be reduced.
  • the terminal may directly send the SIB type sent by the terminal to the response message. terminal.
  • the access network device may send multiple SIB types to the terminal by using a response message.
  • the access network device sends a response message when the terminal sends the bitmap. It can be understood that the bit bitmap correspondingity in the above embodiment can be replaced with the SIB type at this time.
  • Step 503 The access network device sends control information to the terminal, where the terminal receives control information sent by the access network device.
  • Step 504 The access network device sends, by using the time-frequency resource, at least one system information block in the first time interval.
  • Step 505 The terminal acquires the at least one system information block on the time-frequency resource occupied by the at least one system information block in the first time interval.
  • Steps 503 to 505 are the same as steps 401 to 403 in FIG. 4 .
  • Steps 503 to 505 are the same as steps 401 to 403 in FIG. 4 .
  • steps 401 to 403 in FIG. 4 For details, refer to the foregoing description, and details are not described herein again.
  • the access network device may perform some or all of the steps in the above embodiments, and the steps or operations are merely examples, and the present application may also perform other operations or variations of various operations.
  • the various steps may be performed in different orders as presented in the above embodiments. In one possible implementation, not all operations in the above embodiments are performed.
  • the foregoing embodiment may be used for the interaction between the access network device and a terminal.
  • the manner in which the access network device sends the control information may be broadcast or sent on a common resource. Therefore, the foregoing embodiment further The interaction between the access network device and the multiple terminals may be performed, that is, the at least one system information block sent by the access network device in one time interval is for multiple terminals under the access network device.
  • the terminal 1 requests the access network device for the SIB3, and the terminal 2 requests the access network device for the SIB4. Since the scheduling periods of the SIB3 and the SIB4 are the same, the access network device can be in the same system information window.
  • the SIB3 and the SIB4 are transmitted in a time interval, that is, the access network device can simultaneously broadcast the SIB3 and the SIB4, so that the terminal 1 can detect that the access network device sends the SIB3 in the system information window, and then acquires the time frequency of the SIB3. Resources and decode SIB3 from time-frequency resources.
  • the terminal 2 can detect that the access network device sends the SIB4 in the same system information window, then acquires the time-frequency resource where the SIB4 is located, and decodes the SIB4 from the time-frequency resource.
  • the access network device may, according to the request message sent by the multiple terminals, the system information block with the same scheduling period requested by the terminal, or the system information block with different scheduling periods, in the same system information window. Broadcasting in the time interval, further, the system information block sent by the access network device may separately occupy different time-frequency resources, that is, the access network device independently encodes the system information block, so that the terminal acquires the desired system information.
  • the time-frequency resource needs to be decoded on the corresponding time-frequency resource to acquire the system information block without decoding the time-frequency resources occupied by all the system information blocks, thereby improving the success rate, and further, the system transmitted by the access network device
  • the information block may also occupy a common time-frequency resource, that is, the access network device jointly encodes the system information block.
  • the access network device separately encodes system information blocks in a system information window, and transmits different system information blocks through different time-frequency resources, so that the terminal can directly decode and acquire the required information.
  • the system information block can improve the decoding success rate.
  • the access network device jointly encodes the system information block of a system information window, but the encoded system information block only contains the system information block requested by the terminal, instead of the system information window supporting the transmission. All the system information blocks can reduce the signaling overhead of the access network device, reduce the amount of information decoded by the terminal, and improve the decoding success rate of the terminal; in another design, the access network device can also have different scheduling The periodic system information block is sent in the same system information window, which can reduce the transmission delay of the system information block.
  • a CU-DU architecture is introduced, and the radio access network side of the distributed radio access network is divided into a central unit (CU). And Distributed Unit (DU).
  • the CU supports at least a radio resource control (RRC) layer
  • the DU supports at least a radio link control (RLC) layer function and a medium access control (MAC) layer.
  • RRC radio resource control
  • MAC medium access control
  • the CU can also support the function of the Service Data Adaptation Protocol (SDAP) layer, or some or all of the functions of the Packet Data Convergence Protocol (PDCP) layer.
  • SDAP Service Data Adaptation Protocol
  • PDCP Packet Data Convergence Protocol
  • the packet data convergence protocol layer function may include a Packet Data Convergence Protocol (Control Plane, Control Channel, PDCP-C) function and a Packet Data Convergence Protocol (User plane, PDCP- U) function.
  • the CU can also be divided into a control plane (CU-CP) and a user plane (CU-UP), wherein the CU-CP is responsible for the control plane function, mainly including RRC and PDCP-C.
  • CU-UP is responsible for user plane functions, mainly including SDAP and PDCP-U.
  • SDAP is mainly responsible for processing the data of the core network and mapping the flow to the bearer.
  • the PDCP-U is mainly responsible for encryption and decryption of the user plane data, integrity protection, header compression, serial number maintenance, and data transmission.
  • the CU-CP and the CU-UP are connected through an E1 interface, and the CU-CP represents a base station connected to the core network through the Ng interface, and is connected through the F1-C and the DU, and the CU-UP is connected through the F1-U and the DU.
  • the PDCP-C can also be in the CU-UP. It is to be understood that the name of the CU, the DU or the interface is only used as an example. In the embodiment of the present application, the specific interface name is not limited.
  • the CU and the DU are also divided into other protocol stacks.
  • the RRC may be divided into the CU, and the PDCP, the RLC, and the MAC protocol stack are divided into the DU.
  • the specific protocol stack division between other CUs and DUs refer to TR 38.801v14.0.0.
  • one CU can be connected to multiple DUs.
  • the DU can be implemented by the apparatus shown in FIG. 2, and the CU can also be implemented by the apparatus shown in FIG. 2.
  • FIG. 6 another possible system architecture diagram applicable to the present application, where one CU is connected to multiple DUs, and the terminal can communicate wirelessly with the DU through the air interface.
  • the present invention provides another communication method, as shown in FIG. 7, including:
  • Step 701 The DU sends control information to the terminal, and the control information sent by the terminal DU.
  • Step 702 The DU sends at least one system information block by using a time-frequency resource in the first time interval.
  • Step 703 The terminal acquires the at least one system information block on the time-frequency resource occupied by the at least one system information block in the first time interval.
  • the DU may perform some or all of the steps in the above embodiments, and the steps or operations are merely examples, and the present application may also perform other operations or variations of various operations. Further, the various steps may be performed in a different order as presented in the above embodiments, and it is possible that not all of the operations in the above embodiments are performed.
  • the main difference between the embodiment shown in FIG. 7 and the embodiment shown in FIG. 4 is that the steps performed by the access network device in FIG. 4 are replaced by the DU in FIG. 7, that is, the DU directly communicates with the terminal.
  • the steps performed by the access network device in FIG. 4 are replaced by the DU in FIG. 7, that is, the DU directly communicates with the terminal.
  • Specific embodiments of the embodiment shown in FIG. 7 can be referred to the foregoing description.
  • the present application provides another communication method, as shown in FIG. 8, including:
  • Step 801 The terminal sends a first request message to the DU, where the DU receives the first request message sent by the terminal.
  • the first request message is used to request acquisition of at least one system information block.
  • the terminal may request at least one system information block in other system information (other SI), which refers to system information transmitted based on the terminal's request.
  • other SI refers to system information transmitted based on the terminal's request.
  • the terminal requests to acquire one or more of SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, SIB9, SIB10, SIB11, or SIB12.
  • SIB3 system information
  • SIB5 SIB6, SIB7, SIB8, SIB9, SIB10, SIB11, or SIB12.
  • SIB1 system information block
  • a request message may also be used to request acquisition of at least one system information of other system information.
  • Step 802 The DU sends a second request message to the CU, where the CU receives the second request message sent by the DU.
  • the sending, by the DU, the second request message to the CU has the following two implementation manners.
  • the DU after receiving the first request message, the DU obtains the type of the system information block in which the specific request is requested, for example, the DU determines.
  • the terminal requests the SIB3, the SIB4, and the SIB6, and the DU generates a second request message according to the content of the first request message, and sends the second request message to the CU for requesting to acquire the SIB3, the SIB4, and the SIB6.
  • the second request message carries the type indication information of the SIB to be requested.
  • the type indication information may be a type indicating the requested SIB, such as SIB3, SIB4, and SIB6; or the type indication information may also be in the form of a bit bitmap.
  • the number of bit bitmaps is the number of system information blocks that the network device can transmit. For example, the number of system information blocks that the access network device can send based on the terminal request is 10, and the bit bitmap bit in the second request message. The number is 10.
  • the bits of the bit bitmap indicate SIB3 to SIB12 from left to right, and the bit bitmap carried in the second request message is 1101000000, indicating that SIB3, SIB4, and SIB6 are requested.
  • the type indication information of the SIB carried in the second request message can also be used to indicate the SIB information that the CU needs to broadcast, so that the CU updates the scheduling information of the SIBs.
  • the DU after receiving the request message, the DU only knows that the request message is used to request the SIB, but cannot obtain the specific content therein. For example, the request message is used to request to acquire the SIB3 and the SIB4, but the DU does not know that the terminal needs to acquire the SIB3 and the SIB4. In this implementation manner, the DU generates a second request message according to the first request message sent by the terminal, and is used to request the acquisition. SIB.
  • the DU knows the specific type of the SIB that the terminal wants to obtain, so it can be considered that the terminal requests the SI to acquire the SIB.
  • the DU does not know that the terminal requests to obtain the information.
  • the specific type of SIB the DU does not know that the request message sent by the terminal is used to request the SIB, and the DU only transparently transmits the request message sent by the terminal to the CU.
  • Step 803 The CU sends at least one system information requested by the second request message to the DU, and the DU receives at least one system information from the CU.
  • the CU sends to the DU a system information block type and a system information block content, and the system information block may be independently coded or jointly coded.
  • the CU also needs to indicate which system information block types are jointly coded.
  • the DU requests SIB3, SIB4, and SIB6, and the CU jointly encodes SIB3 and SIB4, and the CU needs to notify the DU that SIB3 and SIB4 are jointly coded.
  • the DUs may be notified in the form of a bit bitmap which SIBs are jointly encoded.
  • the CU may also send scheduling information of the system information block, such as a period, an SI window, a number of transmissions, and a time to start broadcasting the SIB.
  • scheduling information of the system information block such as a period, an SI window, a number of transmissions, and a time to start broadcasting the SIB.
  • the CU may indicate which system information blocks or system information of the DU is broadcasted.
  • the indication manner may be directly indicating the type of the system information block or the system information, or may be a manner indication of the bit bitmap, or directly indicating whether each system information block or system information is broadcast and transmitted directly by using 1 bit.
  • the indication method in the present invention is not limited to the above three types.
  • the CU sends at least one type of system information requested by the second request message to the DU, and sends at least one type of system information to the DU, where the two steps may be separately sent in two CU-DU interface messages, and It can be sent together in a CU-DU interface message.
  • Step 804 The DU sends a response message to the terminal, where the terminal receives the response message sent by the DU.
  • steps 803 and 804 are only an example.
  • the DU may perform step 804 first and then perform step 803.
  • Step 805 The DU sends control information to the terminal, where the terminal receives the control information sent by the DU.
  • Step 806 The DU sends at least one system information block by using a time-frequency resource in the first time interval.
  • Step 807 The terminal acquires the at least one system information block on the time-frequency resource occupied by the at least one system information block in the first time interval.
  • the main difference between the steps 804 and 807 shown in FIG. 8 and the steps 502 to 505 of the embodiment shown in FIG. 5 is that the steps performed by the access network device in FIG. 5 are replaced by the DU in FIG. That is, the DU directly communicates with the terminal, and the specific implementation manners of the steps 804 to 807 can refer to the foregoing description.
  • the DU may perform some or all of the steps in the above embodiments, and the steps or operations are merely examples, and the present application may also perform other operations or variations of various operations. Furthermore, the various steps may be performed in a different order as presented in the above-described embodiments, and in one implementation, and not all of the operations in the above-described embodiments may be performed.
  • the DU interacts with the terminal, and the DU interacts with the CU.
  • the CU sends the independently coded system information block to the DU or sends the joint code according to the request of the DU.
  • the system information block implements the terminal-based request, and the system information block is sent by the DU to the terminal.
  • the present invention provides another communication method, as shown in FIG. 9, including:
  • Step 901 The CU sends a system information block that can be sent by the access network device to the DU, and the DU receives the system information block sent by the CU.
  • the system information block that can be sent by the access network device refers to all system information blocks that are supported to be sent based on the terminal request, and may be, for example, SIB3 to SIB12.
  • the manner in which the CU sends the system information block is independent coding, that is, each system information block is separately coded and sent to the DU. As an achievable manner, the CU pre-codes all transmittable system information blocks to the DU in advance.
  • Step 902 The DU receives and stores the received system information block.
  • Step 903 The terminal sends a request message to the DU, and the DU receives the request message sent by the terminal.
  • the request message is used to request to acquire at least one system information block.
  • Steps 904 to 907 are the same as steps 804 to 807 shown in FIG. 8, and may be referred to the foregoing description, and are not described again.
  • the DU may perform some or all of the steps in the above embodiments, and the steps or operations are merely examples, and the present application may also perform other operations or variations of various operations. Moreover, the various steps may be performed in a different order as presented in the above-described embodiments, and in some implementations, it is possible that the entire operation of the above-described embodiments is not performed.
  • all the system information blocks that can be sent by the access network device are sent to the DU by the CU in advance, and are stored locally by the DU.
  • the DU receives the request message of the terminal, Transmitting, according to the requested system information block in the request message, a corresponding system information block to the terminal, where the system information block sent to the terminal may be a system information block requested by the terminal, or may be a system requested by multiple terminals.
  • Information blocks which have the same or different scheduling periods and can be sent in one time interval.
  • the present invention provides another communication method, as shown in FIG. 10, including:
  • Step 1001 The terminal sends a request message to the CU, where the CU receives the request message sent by the terminal.
  • the request message is used to request to acquire at least one system information block.
  • Step 1002 The CU sends at least one system information to the DU, and the DU receives at least one system information from the CU.
  • the CU may send indication information to the DU, where the indication information may include a system information block type and a system information block content, and the system information block may be independently coded or jointly encoded.
  • the CU also needs to indicate which system information block types are jointly coded.
  • the scheduling period of SIB3 and SIB4 is 160 ms
  • the scheduling period of SIB6 is 320 ms.
  • the CU can jointly encode SIB3 and SIB4 and indicate the DU. Specifically, it may be indicated in the form of a bit bitmap which of the SIs are jointly encoded.
  • the CU needs to send the information of the SIB to the DU, and the specific scheduling information includes an SIB period, an SI window, a number of transmissions, a time to start broadcasting the SIB, and the like;
  • the CU may indicate which system information blocks or system information of the DU is broadcasted.
  • the indication manner may be directly indicating the type of the system information block or the system information, or may be a way of indicating the bitmap, or directly indicating whether each system information block or system information is broadcast and transmitted directly by using 1 bit.
  • the indication method in the present invention is not limited to the above three types.
  • step 1002 can be based on step 1001 or can be performed independently.
  • Step 1003 The CU sends a response message to the terminal, where the terminal receives the response message sent by the CU.
  • step 1002 and step 1003 are only an example. As an achievable manner, the CU may first perform step 1003 and then perform step 1002.
  • step 1001 and the step 1003 For the specific implementation of the step 1001 and the step 1003, reference may be made to the descriptions of the foregoing steps 501 and 502, except that the access network device in step 501 and step 502 corresponds to the CU in step 1001 and step 1003.
  • Step 1004 The DU sends control information to the terminal, and the terminal receives the control information sent by the DU.
  • the DU may determine the control information according to the indication information sent by the CU.
  • Step 1005 The DU sends at least one type of system information block by using a time-frequency resource in the first time interval.
  • the access network device in the step 401 to the step 402 is corresponding to the DU in the step 1004 to the step 1005.
  • Step 1006 The terminal acquires the at least one system information block on the time-frequency resource occupied by the at least one system information block in the first time interval.
  • the DU may perform some or all of the steps in the above embodiments, and the steps or operations are merely examples, and the present application may also perform other operations or variations of various operations. Moreover, the various steps may be performed in a different order as presented in the above-described embodiments, and in some implementations, it is possible that the entire operation of the above-described embodiments is not performed.
  • At least one type of system information that the DU sends to the terminal may have the same scheduling period, or some of the system information may have the same scheduling period, and part of the system information. There are different scheduling periods. When the system information has different scheduling periods, the transmission delay of the at least one system information does not satisfy the delay condition.
  • the DU sends the control information to the terminal reference may be made to the foregoing three methods for the access network device to send the control information to the terminal, and details are not described herein again.
  • the application may divide a function module into a terminal or an access network device or a DU or a CU according to the foregoing method example.
  • each function module may be divided according to each function, or two or more functions may be integrated into one process.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the present application is schematic, and is only a logical function division, and may be further divided in actual implementation.
  • FIG. 11 shows a schematic diagram of a device.
  • the device 1100 includes a processing unit 1101 and a transceiver unit 1102.
  • the device 1100 may be an access network device, and may be a terminal. It may be a DU or a CU, and the functions of the device 1100 are respectively described below.
  • the transceiver unit 1102 sends control information to the terminal, where the control information is used to indicate at least one system information block sent in a first time interval of the first system information window, and the a time-frequency resource occupied by at least one system information block; wherein the at least one system information block is part or all of a system information block in a system information block transmittable in the first system information window; the transceiver unit 1102 is Transmitting, by the time-frequency resource, the at least one system information block by the first time interval.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource shared by the at least one system information block.
  • the at least one system information block is jointly encoded. In this way, it is convenient to encode.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource occupied by the at least one system information block.
  • the at least one system information block is independently coded. In this way, the terminal can decode only the system information blocks it needs, without decoding the system information blocks that are not needed, and the system information block that needs to be decoded is reduced, so that the decoding success rate can be further improved.
  • the scheduling period of the system information blocks that can be transmitted in the first system information window is the same.
  • the scheduling period of the system information blocks that can be transmitted in the first system information window is different. In this way, the system information blocks originally belonging to different system information windows can be sent in the same system information window, which can solve the delay problem.
  • control information includes a respective system information block type of the at least one system information block.
  • control information includes a first bit bitmap, the bits of the first bit bitmap are in one-to-one correspondence with the system information blocks transmittable in the first system information window, and the at least one system information block The value of the corresponding bit is used to indicate that the at least one type of system information block is transmitted.
  • control information includes the SI RNTI corresponding to each of the at least one system information block.
  • the transceiver unit 1102 receives a request message sent by the terminal, and the request message is used to request to acquire the at least one system information block.
  • the request message includes a second bit bitmap
  • the number of bits of the second bit bitmap is the number of system information blocks that the access network device can send
  • the second bit bitmap is used to request to obtain the at least A part or all of a system information block.
  • the transceiver unit 1102 sends a third bit bitmap to the terminal, where the number of bits in the third bit bitmap is the number of system information blocks that the access network device can transmit, and the at least one system information block.
  • the value of the corresponding bit is used to indicate that the at least one system information block is sent, and the third bit bitmap is used to indicate that the access network device successfully receives the request message.
  • the transceiver unit 1102 receives control information from the access network device, where the control information is used to indicate at least one system information block sent in a first time interval of the first system information window, and the at least one Time-frequency resources occupied by system information blocks;
  • the at least one system information block is part or all of the system information blocks in the system information block that can be sent in the first system information window; the transceiver unit 1102 receives the access network device according to the control information and passes the foregoing time interval in the first time interval. At least one system information block sent by the frequency resource.
  • the transceiver unit 1102 receives a third bit bitmap sent by the access network device, where the number of bits in the third bit bitmap is the number of system information blocks that can be sent by the access network device, and the at least one The value of the bit corresponding to the system information block is used to indicate that the at least one system information block is sent, and the third bit bitmap is used to indicate that the access network device successfully receives the request message.
  • the transceiver unit 1102 sends control information to the terminal, where the control information is used to indicate at least one system information block sent in a first time interval of the first system information window, and the at least one system information block The occupied time-frequency resource; wherein the at least one system information block is part or all of the system information blocks in the system information block that can be sent in the first system information window; the transceiver unit 1102 passes the time in the first time interval.
  • the frequency resource transmits the at least one system information block.
  • the transceiver unit 1102 receives a first request message sent by the terminal, where the first request message is used to request to acquire the at least one system information block.
  • the transceiver unit 1102 receives system information from the CU, the system information including at least system information blocks transmittable within the first system information window.
  • the transceiver unit 1102 sends a second request message to the CU, where the second request message is used to request acquisition of at least one system information, and the DU receives at least one system information sent by the CU.
  • the transceiver unit 1102 sends a third bit bitmap to the terminal, where the number of bits in the third bit bitmap is the number of system information blocks that the access network device can transmit, and the at least one system information block.
  • the value of the corresponding bit is used to indicate that the at least one system information block is sent, and the third bit bitmap is used to indicate that the DU successfully receives the first request message.
  • the transceiver unit 1102 receives a second request message from the DU, the second request message is used to request acquisition of at least one type of system information, and the transceiver unit 1102 transmits the requested at least one system information to the DU.
  • the processing unit 1101 independently encodes each system information in the at least one system information, and transmits the encoded at least one system information to the DU through the transceiver unit 1102.
  • the processing unit 1101 jointly encodes the at least one system information, and sends the encoded at least one system information to the DU through the transceiver unit 1102.
  • the transceiver unit 1102 receives a request message from the terminal, where the request message is used to request acquisition of at least one type of system information; and the CU sends the at least one system information to the DU.
  • the device is presented in the form of dividing each functional module corresponding to each function, or the device is presented in a form that divides each functional module in an integrated manner.
  • a “module” herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that provide the functionality described above.
  • ASIC application-specific integrated circuit
  • Device In a simple embodiment, those skilled in the art will appreciate that the device 1100 can take the form shown in FIG.
  • the processing unit 1101 and the transceiver unit 1102 in FIG. 11 may be implemented by the processor 21 (and/or the processor 28) of FIG. 2 and the memory 23.
  • the processing unit 1101 and the transceiver unit 1102 may pass the processor. 21 (and/or processor 28) is executed by calling the application code stored in the memory 23, which is not limited in this application.
  • the present application also provides a computer storage medium for storing computer software instructions for use in the apparatus shown in Figures 2 and 11 above, including program code for performing the above-described method embodiments.
  • program code for performing the above-described method embodiments.
  • the application also provides a computer program product.
  • the computer program product includes computer software instructions that can be loaded by a processor to implement the methods of the above method embodiments.
  • the present application also provides a chip, including a processor, a transceiver component, which can be used to perform the method shown in FIG. 4, FIG. 5, and FIG. 7 to FIG.
  • the chip further includes a storage unit.
  • the present application also provides several other communication methods, which can be used to solve the technical problem in the background art, and the communication method is applicable to the system architecture shown in FIG. 6, that is, including one CU, one or more can communicate with the CU DU.
  • the CU or the DU shown in FIG. 6 may be the structure shown in FIG. 2, and the specific description is not described here.
  • system information is system information (SI) or system information aiton block (SIB), and one SI includes one or more SIBs having the same scheduling period.
  • SI system information
  • SIB system information aiton block
  • the DU and CU who modify the indicator in the scheduling information, the indicator is used to indicate which SIBs or SIs are being broadcast, and which SIBs or SIs are not currently being broadcast.
  • the SIB1 carries the foregoing scheduling information, and after receiving the SIB 1, the terminal can learn, according to the scheduling information, which SIBs or SIs are being broadcast, and a sending window corresponding to the SIB or the SI.
  • the terminal can learn, according to the scheduling information, which SIBs or SIs are being broadcast, and a sending window corresponding to the SIB or the SI.
  • Solution 1 the DU modifies the indicator, the CU generates system information, and the DU determines the broadcast.
  • the communication method provided by the embodiment of the present application includes the following steps:
  • Step 1 The DU determines whether to broadcast the first system information.
  • the DU when the DU receives the first request from the terminal, it decides to broadcast the first system information, where the first request is used to request the first system information.
  • the first request may be carried by the MSG1 or the MSG3.
  • the first system information requested in the MSG1 or the MSG3 may be obtained; for example, when the timer in the DU expires, the triggering DU determines to broadcast the first system information, and the like.
  • the DU may decide not to broadcast the first system information.
  • Step 2 The DU modifies the indicator.
  • the indicator may be referred to as a first indication, and the first indication is used to indicate whether the first system information is broadcast.
  • the DU can modify the indicator according to the result of step 1. For example, the first system information is not previously broadcast, and in step 1, the DU decides to broadcast the first system information, and the DU modifies the indicator to indicate that the first system information is broadcast. For another example, the first system information has been broadcast, and the DU decides in step 1 that the first system information is no longer broadcasted, and the DU modifies the indicator to indicate that the first system information is not broadcast.
  • Step 3 The DU broadcasts the modified indicator (which may also be referred to as a first indication) and the first system information.
  • the DU broadcasts the first indication and the first system information
  • the DU may separately broadcast the first indication and the first system information.
  • the terminal may receive the first indication, so that it can determine which system information is being broadcast, and receive the first system information on the corresponding time-frequency resource.
  • the DU when the DU broadcasts the first system information, if the DU has previously obtained the first system information from the CU and stored in the DU local, the DU may directly broadcast the first system information. If the DU does not store the first system information, the DU sends a second request to the CU for requesting the first system information, and the CU sends the first system information to the DU, and then the DU broadcasts the first system information.
  • the DU broadcasts the first system information according to the scheduling information of the first system information, where the scheduling information of the first system information may be obtained by the DU from the CU and stored in the DU local area. It may also be sent by the CU to the DU when sending the first system information to the DU.
  • the DU may pass some parameters in the first system information to the CU, so that the CU includes the foregoing parameters when generating the first system information.
  • step 4 the DU sends a second indication to the CU.
  • the second indication is for indicating whether the first system information is broadcast.
  • the second indication may be the above indicator.
  • the method further includes:
  • Step 5 If the CU determines that the first system information is updated and determines that the DU is broadcasting the first system information, the CU sends the updated first system information to the DU.
  • the updated first system information may be sent to the DU, so that the DU broadcasts the updated first system information in time, thereby ensuring that the first system information of the DU broadcast is up to date. To ensure the correctness of the broadcast system information.
  • the DU is currently broadcasting SIB6, and the DU sends a second indication to the CU indicating that the SIB6 is being transmitted, and when the CU determines that the SIB6 is currently updated, the updated SIB6 can be sent to the DU, so that the DU broadcasts the update in time. SIB6.
  • Solution 2 The DU modifies the indicator, the CU generates system information, and the CU decides to broadcast.
  • the communication method provided by the embodiment of the present application includes the following steps:
  • Step 1 The CU determines whether to broadcast the first system information.
  • the CU when the CU receives the second request from the DU, it decides to broadcast the first system information, and the second request is used to request the first system information.
  • the DU sends a second request to the CU upon receiving the first request from the terminal.
  • the first request message is used to request acquisition of at least one system information block.
  • the terminal may request at least one system information block in other system information (other SI), which refers to system information transmitted based on the terminal's request.
  • the terminal requests to acquire one or more of SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, SIB9, SIB10, SIB11, or SIB12.
  • the first request message is used to request acquisition of at least one system information (SI).
  • the DU can broadcast a mapping relationship between System Information (SI) and System Information Block (SIB) (for example, the first SI includes SIB3 and SIB4, and the second SI includes SIB5-SIB9), UE. If the information in the SIB5 is to be obtained, the UE may request to acquire the second SI according to the mapping relationship, that is, the first request message may be sent, where the first request message is used to request to acquire the second SI.
  • SI System Information
  • SIB System Information Block
  • the UE may obtain the information in the SIB4 and the SIB5, and the UE may request to acquire the first SI and the second SI according to the mapping relationship, that is, the first request message may be sent, where the first request message is used to request the first SI and second SI.
  • one SI may include one or more SIBs.
  • the DU may also send the foregoing mapping relationship to the CU, so that the CU can decide which SIBs to broadcast based on the SI requested by the UE, and notify the DU which SIBs need to be broadcast.
  • the second request may refer to the design of the first request above.
  • the DU may be aware of the first system information requested in the first request, and the first request may be carried by the MSG1 or the MSG3; the DU may also not know the first system information requested in the first request, for example,
  • the first request is carried by the MSG3, and the DU only transparently transmits the MSG3 to the CU.
  • the first request is carried by the MSG3, and the first request is an RRC message, for requesting to acquire the first system information, for example, requesting acquiring the system information type 1, the system information type 2, and other first system information, etc. For example, request to acquire system information block type 2, system information block type 3, and other first system information.
  • the DU transparently transmits the first request to the CU.
  • the CU when the CU receives the request for requesting the first system information from the terminal, it is determined to broadcast the first system information. For another example, when the timer in the CU times out, the CU is triggered to decide to broadcast the first system information and the like.
  • the CU may also be triggered to decide not to broadcast the first system information.
  • Step 2 The DU modifies the indicator.
  • the DU is instructed to modify the indicator.
  • the CU sends an indication message to the DU, indicating that the first system information is sent.
  • the CU may indicate which system information blocks or system information of the DU is broadcasted.
  • the indication manner may be directly indicating the type of the system information block or the system information, or may be a manner indication of the bit bitmap, or directly indicating whether each system information block or system information is broadcast and transmitted directly by using 1 bit.
  • the indication method in the present invention is not limited to the above three types.
  • the CU can decide which SIBs to broadcast based on the SI requested by the UE, and inform the DU which SIBs need to be broadcast, or can directly inform the DU which SIs need to be broadcast.
  • the indicator may be referred to as a first indication, and the indicator may indicate whether the first system information is broadcast.
  • the indicator of the system information block 3 indicates that the system information block is broadcast
  • the indicator of the system information block 4 indicates that the system information block is not broadcast
  • the UE is required to request the broadcast.
  • the DU can modify the indicator according to the result of step 1.
  • the first system information is not previously broadcast, and in step 1, the DU decides to broadcast the first system information, and the DU modifies the indicator to indicate that the first system information is broadcast.
  • the first system information has been broadcast, and the DU decides in step 1 that the first system information is no longer broadcasted, and the DU modifies the indicator to indicate that the first system information is not broadcast.
  • Step 3 The DU broadcasts the modified indicator (which may also be referred to as a first indication) and the first system information.
  • the DU broadcasts the first indication and the first system information
  • the DU may separately broadcast the first indication and the first system information.
  • the terminal may receive the first indication, so that it can determine which system information is being broadcast, and receive the first system information on the corresponding time-frequency resource.
  • the DU when the DU broadcasts the first system information, if the DU has previously obtained the first system information from the CU and is stored in the DU local, the DU may directly broadcast the first system information.
  • the CU sends to the DU a system information block type and a system information block content, and the system information block may be independently coded or jointly coded.
  • the CU may send one or more SIBs to the DU, and the SIs combine the SIBs into SIs. If the DU does not store the first system information, the DU sends a second request to the CU for requesting the first system information, and the CU sends the first system information to the DU, and then the DU broadcasts the first system information.
  • the DU broadcasts the first system information according to the scheduling information of the first system information, where the scheduling information of the first system information may be obtained by the DU from the CU and stored in the DU local area. It may also be sent by the CU to the DU when sending the first system information to the DU.
  • the DU may pass some parameters in the first system information to the CU, so that the CU includes the foregoing parameters when generating the first system information.
  • step 4 the DU sends a second indication to the CU.
  • the second indication is for indicating whether the first system information is broadcast.
  • the second indication may be the above indicator.
  • the method further includes:
  • Step 5 If the CU determines that the first system information is updated and determines that the DU is broadcasting the first system information, the CU sends the updated first system information to the DU.
  • the updated first system information may be sent to the DU, so that the DU broadcasts the updated first system information in time, thereby ensuring that the first system information of the DU broadcast is up to date. To ensure the correctness of the broadcast system information.
  • the DU is currently broadcasting SIB6, and the DU sends a second indication to the CU indicating that the SIB6 is being transmitted, and when the CU determines that the SIB6 is currently updated, the updated SIB6 can be sent to the DU, so that the DU broadcasts the update in time. SIB6.
  • the CU generates system information, which may be that the CU generates an SIB, and the SI forms the SI into the SI, that is, the actual content of the system information is generated by the CU.
  • Solution 3 The DU modifies the indicator, the DU generates system information, and the DU determines the broadcast.
  • the communication method provided by the embodiment of the present application includes the following steps:
  • Step 1 The DU determines whether to broadcast the first system information.
  • the DU when the DU receives the first request from the terminal, it decides to broadcast the first system information, where the first request is used to request the first system information.
  • the first request may be carried by the MSG1 or the MSG3.
  • the first system information requested in the MSG1 or the MSG3 may be obtained; for example, when the timer in the DU expires, the triggering DU determines to broadcast the first system information, and the like.
  • the DU may decide not to broadcast the first system information.
  • Step 2 The DU modifies the indicator.
  • the indicator may be referred to as a first indication, and the first indication is used to indicate whether the first system information is broadcast.
  • the DU can modify the indicator according to the result of step 1. For example, the first system information is not previously broadcast, and in step 1, the DU decides to broadcast the first system information, and the DU modifies the indicator to indicate that the first system information is broadcast. For another example, the first system information has been broadcast, and the DU decides in step 1 that the first system information is no longer broadcasted, and the DU modifies the indicator to indicate that the first system information is not broadcast.
  • Step 3 The DU broadcasts the modified indicator (which may also be referred to as a first indication) and the first system information.
  • the DU broadcasts the first indication and the first system information
  • the DU may separately broadcast the first indication and the first system information.
  • the terminal may receive the first indication, so that it can determine which system information is being broadcast, and receive the first system information on the corresponding time-frequency resource.
  • the DU when the DU broadcasts the first system information, the first system information is generated by the DU.
  • the CU may pass some parameters in the first system information to the DU, so that the DU includes the foregoing parameters when generating the first system information.
  • step 4 the DU sends a second indication to the CU.
  • the second indication is for indicating whether the first system information is broadcast.
  • the second indication may be the above indicator.
  • Solution 4 The DU modifies the indicator, the DU generates system information, and the CU decides to broadcast.
  • the communication method provided by the embodiment of the present application includes the following steps:
  • Step 1 The CU determines whether to broadcast the first system information.
  • the CU when the CU receives the second request from the DU, it decides to broadcast the first system information, and the second request is used to request the first system information.
  • the DU sends a second request to the CU upon receiving the first request from the terminal.
  • the DU may be aware of the first system information requested in the first request, and the first request may be carried by the MSG1 or the MSG3; the DU may also not know the first system information requested in the first request, for example, The first request is carried by the MSG3, and the DU only transparently transmits the MSG3 to the CU. It can be understood that, when the CU receives the request for requesting the first system information from the terminal, it is determined to broadcast the first system information. For another example, when the timer in the CU times out, the CU is triggered to decide to broadcast the first system information and the like.
  • the CU may also be triggered to decide not to broadcast the first system information.
  • Step 2 The DU modifies the indicator.
  • the DU is instructed to modify the indicator.
  • the indicator may be referred to as a first indication, and the indicator may indicate whether the first system information is broadcast.
  • the DU can modify the indicator according to the result of step 1. For example, the first system information is not previously broadcast, and in step 1, the DU decides to broadcast the first system information, and the DU modifies the indicator to indicate that the first system information is broadcast. For another example, the first system information has been broadcast, and the DU decides in step 1 that the first system information is no longer broadcasted, and the DU modifies the indicator to indicate that the first system information is not broadcast.
  • Step 3 The DU broadcasts the modified indicator (which may also be referred to as a first indication) and the first system information.
  • the DU broadcasts the first indication and the first system information
  • the DU may separately broadcast the first indication and the first system information.
  • the terminal may receive the first indication, so that it can determine which system information is being broadcast, and receive the first system information on the corresponding time-frequency resource.
  • the first system information is generated by the DU, and the scheduling information of the first system information is also generated by the DU.
  • the CU may pass some parameters in the first system information to the DU, so that the DU includes the foregoing parameters when generating the first system information.
  • step 4 the DU sends a second indication to the CU.
  • the second indication is for indicating whether the first system information is broadcast.
  • the second indication may be the above indicator.
  • the network can process the request of the first system information carried by the terminal through the MSG1 or the MSG3 in time, and broadcast the first system information requested by the terminal in time.
  • whether the various system information is broadcasted and synchronized between the CU and the DU is beneficial to the maintenance and update of the system.
  • Solution 5 The CU modifies the indicator, the CU generates system information, and the DU determines the broadcast.
  • the communication method provided by the embodiment of the present application includes the following steps:
  • Step 1 The DU determines whether to broadcast the first system information.
  • the DU when the DU receives the first request from the terminal, it decides to broadcast the first system information, where the first request is used to request the first system information.
  • the first request may be carried by the MSG1 or the MSG3.
  • the first system information requested in the MSG1 or the MSG3 may be obtained; for example, when the timer in the DU expires, the triggering DU determines to broadcast the first system information, and the like.
  • the DU may decide not to broadcast the first system information.
  • the DU may notify the CU of the result of the decision, so that the CU modifies the indicator.
  • the DU may send a request message to the CU, requesting the CU to send the first system information to the DU, and the request message may be regarded as a notification indicating that the CU modifies the indicator, and the CU may It is known that the first system information will be broadcast, so the indicator can be modified correctly.
  • the DU may send a notification message to the CU to notify the CU how to modify the indicator, for example, to notify the CU that the first system information will not be broadcast, or the first system information will be broadcast, and the CU according to the notification message
  • the indicator can be modified correctly.
  • Step 2 The CU modifies the indicator and sends an indicator to the DU.
  • the indicator may be referred to as a third indication, and the indicator may indicate whether the first system information is broadcast.
  • the CU can modify the indicator according to the result of step 1. For example, the first system information is not previously broadcast, and in step 1, the CU decides to broadcast the first system information, and the CU modifies the indicator to indicate that the first system information is broadcast. For another example, the first system information has been broadcast, and the CU decides in step 1 that the first system information is no longer broadcasted, and the CU modifies the indicator to indicate that the first system information is not broadcast.
  • Step 3 The DU broadcasts the modified indicator (which may also be referred to as a fourth indication) and the first system information.
  • the fourth indication is for indicating whether the first system information is broadcast.
  • the DU broadcasts the fourth indication and the first system information
  • the DU may separately broadcast the fourth indication and the first system information.
  • the terminal may receive the fourth indication, so that it can determine which system information is being broadcasted, and receive the first system information on the corresponding time-frequency resource.
  • the DU when the DU broadcasts the first system information, if the DU has previously obtained the first system information from the CU and is stored in the DU local, the DU may directly broadcast the first system information. If the DU does not store the first system information, the DU sends a second request to the CU for requesting the first system information, and the CU sends the first system information to the DU, and then the DU broadcasts the first system information.
  • the DU broadcasts the first system information according to the scheduling information of the first system information, where the scheduling information of the first system information may be obtained by the DU from the CU and stored in the DU local area. It may also be sent by the CU to the DU when sending the first system information to the DU.
  • the DU may pass some parameters in the first system information to the CU, so that the CU includes the foregoing parameters when generating the first system information.
  • the method further includes:
  • Step 4 If the CU determines that the first system information is updated and determines that the DU is broadcasting the first system information, the CU sends the updated first system information to the DU.
  • the updated first system information may be sent to the DU, so that the DU broadcasts the updated first system information in time, thereby ensuring that the first system information of the DU broadcast is up to date. To ensure the correctness of the broadcast system information.
  • the CU indicates, by the third indication, that the DU broadcasts the SIB6, and when the CU determines that the SIB6 is currently updated, the updated SIB6 may be sent to the DU, so that the DU broadcasts the updated SIB6 in time.
  • Solution 6 the CU modifies the indicator, the CU generates system information, and the CU decides to broadcast.
  • the communication method provided by the embodiment of the present application includes the following steps:
  • Step 1 The CU determines whether to broadcast the first system information.
  • the CU when the CU receives the second request from the DU, it decides to broadcast the first system information, and the second request is used to request the first system information.
  • the DU sends a second request to the CU upon receiving the first request from the terminal.
  • the DU may be aware of the first system information requested in the first request, and the first request may be carried by the MSG1 or the MSG3; the DU may also not know the first system information requested in the first request, for example, The first request is carried by the MSG3, and the DU only transparently transmits the MSG3 to the CU. It can be understood that, when the CU receives the request for requesting the first system information from the terminal, it is determined to broadcast the first system information. For another example, when the timer in the CU times out, the CU is triggered to decide to broadcast the first system information, and so on.
  • the CU may also be triggered to decide not to broadcast the first system information.
  • Step 2 The CU modifies the indicator and sends an indicator to the DU.
  • the indicator may be referred to as a third indication, and the indicator may indicate whether the first system information is broadcast.
  • the CU can modify the indicator according to the result of step 1. For example, the first system information is not previously broadcast, and in step 1, the CU decides to broadcast the first system information, and the CU modifies the indicator to indicate that the first system information is broadcast. For another example, the first system information has been broadcast, and the CU decides in step 1 that the first system information is no longer broadcasted, and the CU modifies the indicator to indicate that the first system information is not broadcast.
  • Step 3 The DU broadcasts the modified indicator (which may also be referred to as a fourth indication) and the first system information.
  • the fourth indication is for indicating whether the first system information is broadcast.
  • the DU broadcasts the fourth indication and the first system information
  • the DU may separately broadcast the fourth indication and the first system information.
  • the terminal may receive the fourth indication, so that it can determine which system information is being broadcasted, and receive the first system information on the corresponding time-frequency resource.
  • the DU when the DU broadcasts the first system information, if the DU has previously obtained the first system information from the CU and is stored in the DU local, the DU may directly broadcast the first system information. If the DU does not store the first system information, the DU sends a second request to the CU for requesting the first system information, and the CU sends the first system information to the DU, and then the DU broadcasts the first system information.
  • the DU broadcasts the first system information according to the scheduling information of the first system information, where the scheduling information of the first system information may be obtained by the DU from the CU and stored in the DU local area. It may also be sent by the CU to the DU when sending the first system information to the DU.
  • the DU may pass some parameters in the first system information to the CU, so that the CU includes the foregoing parameters when generating the first system information.
  • the method further includes:
  • Step 4 If the CU determines that the first system information is updated and determines that the DU is broadcasting the first system information, the CU sends the updated first system information to the DU.
  • the updated first system information may be sent to the DU, so that the DU broadcasts the updated first system information in time, thereby ensuring that the first system information of the DU broadcast is up to date. To ensure the correctness of the broadcast system information.
  • the CU indicates, by the third indication, that the DU broadcasts the SIB6, and when the CU determines that the SIB6 is currently updated, the updated SIB6 may be sent to the DU, so that the DU broadcasts the updated SIB6 in time.
  • the CU modifies the indicator, the DU generates system information, and the DU determines the broadcast.
  • the communication method provided by the embodiment of the present application includes the following steps:
  • Step 1 The DU determines whether to broadcast the first system information.
  • the DU when the DU receives the first request from the terminal, it decides to broadcast the first system information, where the first request is used to request the first system information.
  • the first request may be carried by the MSG1 or the MSG3.
  • the first system information requested in the MSG1 or the MSG3 may be obtained; for example, when the timer in the DU expires, the triggering DU determines to broadcast the first system information, and the like.
  • the DU may decide not to broadcast the first system information.
  • the DU may notify the CU of the result of the decision, so that the CU modifies the indicator.
  • the DU may send a request message to the CU, requesting the CU to send the first system information to the DU, and the request message may be regarded as a notification indicating that the CU modifies the indicator, and the CU may It is known that the first system information will be broadcast, so the indicator can be modified correctly.
  • the DU may send a notification message to the CU to notify the CU how to modify the indicator, for example, to notify the CU that the first system information will not be broadcast, or the first system information will be broadcast, and the CU according to the notification message
  • the indicator can be modified correctly.
  • Step 2 The CU modifies the indicator and sends an indicator to the DU.
  • the indicator may be referred to as a third indication, and the indicator may indicate whether the first system information is broadcast.
  • the CU can modify the indicator according to the result of step 1. For example, the first system information is not previously broadcast, and in step 1, the CU decides to broadcast the first system information, and the CU modifies the indicator to indicate that the first system information is broadcast. For another example, the first system information has been broadcast, and the CU decides in step 1 that the first system information is no longer broadcasted, and the CU modifies the indicator to indicate that the first system information is not broadcast.
  • Step 3 The DU broadcasts the modified indicator (which may also be referred to as a fourth indication) and the first system information.
  • the fourth indication is for indicating whether the first system information is broadcast.
  • the DU broadcasts the fourth indication and the first system information
  • the DU may separately broadcast the fourth indication and the first system information.
  • the terminal may receive the fourth indication, so that it can determine which system information is being broadcasted, and receive the first system information on the corresponding time-frequency resource.
  • the first system information is generated by the DU, and the scheduling information of the first system information is also generated by the DU.
  • the CU may pass some parameters in the first system information to the DU, so that the DU includes the foregoing parameters when generating the first system information.
  • Solution 8 the CU modifies the indicator, the DU generates system information, and the CU decides to broadcast.
  • the communication method provided by the present application includes the following steps:
  • Step 1 The CU determines whether to broadcast the first system information.
  • the CU when the CU receives the second request from the DU, it decides to broadcast the first system information, and the second request is used to request the first system information.
  • the DU sends a second request to the CU upon receiving the first request from the terminal.
  • the DU may be aware of the first system information requested in the first request, and the first request may be carried by the MSG1 or the MSG3; the DU may also not know the first system information requested in the first request, for example, The first request is carried by the MSG3, and the DU only transparently transmits the MSG3 to the CU. It can be understood that, when the CU receives the request for requesting the first system information from the terminal, it is determined to broadcast the first system information. For another example, when the timer in the CU times out, the CU is triggered to decide to broadcast the first system information, and so on.
  • the CU may also be triggered to decide not to broadcast the first system information.
  • Step 2 The CU modifies the indicator and sends an indicator to the DU.
  • the indicator may be referred to as a third indication, and the indicator may indicate whether the first system information is broadcast.
  • the CU can modify the indicator according to the result of step 1. For example, the first system information is not previously broadcast, and in step 1, the CU decides to broadcast the first system information, and the CU modifies the indicator to indicate that the first system information is broadcast. For another example, the first system information has been broadcast, and the CU decides in step 1 that the first system information is no longer broadcasted, and the CU modifies the indicator to indicate that the first system information is not broadcast.
  • Step 3 The DU broadcasts the modified indicator (which may also be referred to as a fourth indication) and the first system information.
  • the fourth indication is for indicating whether the first system information is broadcast.
  • the DU broadcasts the fourth indication and the first system information
  • the DU may separately broadcast the fourth indication and the first system information.
  • the terminal may receive the fourth indication, so that it can determine which system information is being broadcasted, and receive the first system information on the corresponding time-frequency resource.
  • the first system information is generated by the DU, and the scheduling information of the first system information is also generated by the DU.
  • the CU may pass some parameters in the first system information to the DU, so that the DU includes the foregoing parameters when generating the first system information.
  • the DU may further receive, by the CU, a first window indication, where the first window indication is used to indicate whether the first system information may be outside a system information window corresponding to the first system information.
  • the system information window is sent.
  • the DU may broadcast a second window indication, where the second window indicates whether the first system information can be sent in a system information window other than the system information window corresponding to the first system information.
  • the first window indication may be the same as the second window indication.
  • the DU or CU may perform some or all of the steps in the above embodiments, and the steps or operations are merely examples, and the present application may also perform other operations or variations of various operations. Further, the various steps may be performed in a different order as presented in the above embodiments, and it is possible that not all of the operations in the above embodiments are performed.
  • the CU sends the scheduling information of the first system information to the DU.
  • the scheduling information of the first system information includes at least one of the following: a period of the first system information, and information of the first system information.
  • System window SI window
  • the start time for transmitting the first system information may be the start time or valid time information of the SIB or SI transmission or change or the start of the modification period.
  • the DU can broadcast the first system information according to the scheduling information of the first system information.
  • the scheduling information may further include sending indication information, indicating whether the first system information needs to be broadcast, where the first system information is an SIB or an SI.
  • the scheduling information may further indicate whether the SIB or the SI is sent in the SI window of the SIB or the SI of the other scheduling period, or whether the SIB or the SI of the different scheduling periods need to be in the same time in the time domain overlapping time. SI window is sent.
  • the scheduling information may also indicate whether the original SI window of the SIB or the SI sent by the SIB of the other scheduling period of the SIB or SI of the other scheduling period at the time of the time domain overlap is reserved. Or, after the SIB or the SI is sent by the SIB of the SIB or the SI in the other scheduling period, whether the SI window corresponding to the SIB or the SI needs to be reserved may be a protocol pre-defined.
  • the time in which the time domain overlaps refers to an integer multiple of the least common multiple with different scheduling periods.
  • the CU may also indicate the physical channel type of the SIB or the SI, and the physical channel type may include a physical broadcast channel (PBCH) and a physical downlink shared channel (PDSCH). At least one of a special physical downlink shared channel, an Enhanced Physical Downlink shared channel (EPDSCH), or a new physical channel newly introduced by a new radio (NR).
  • PBCH physical broadcast channel
  • PDSCH physical downlink shared channel
  • EPDSCH Enhanced Physical Downlink shared channel
  • NR new radio
  • the special physical downlink shared channel may be physical downlink shared information applicable to a special terminal, such as NPDSCH (Narrowband Physical Downlink Shared Channel) for Narrowband Internet of Things (NB-IoT) terminal, and applicable MTC (Machine Type Communication) Or the MPDCCH (MTC Physical Downlink Shared Channel) of the enhanced MTC terminal.
  • NPDSCH Nearband Physical Downlink Shared Channel
  • NB-IoT Narrowband Internet of Things
  • MTC Machine Type Communication
  • MPDCCH MTC Physical Downlink Shared Channel
  • the physical channel that sends the master information block (MIB) is physical broadcast information, and may indicate that the physical channels of other SIBs or SIs other than the MIB are physical downlink shared channels, special physical downlink shared channels, and enhanced. At least one of a physical physical downlink shared channel (EPDSCH) or a new physical channel newly introduced by a new radio (NR).
  • EPDSCH physical physical downlink shared channel
  • NR new radio
  • the terminal when the terminal sends an SI request through the MSG3, it needs to introduce a new RRC signaling format or a new contention resolution (CR) format.
  • the new RRC message for the SI request needs to carry the first indication information for indicating the requested SI or SIB information.
  • the first indication information may be in the form of a bit bitmap, an enumerated form, or other forms.
  • the new RRC message for the SI request may not carry terminal identification information, such as TMSI, IMSI, S-TMSI, temporary random identifier, or other U identifier information determined based on TMSI, IMSI, S-TMSI.
  • the CR message may include a new RRC message for the SI request, or include terminal identification information and second indication information, or only the second indication information.
  • the second indication information may be the same as the first indication information in the new RRC message for the SI request, or may indicate the first indication information, or the second indication. The information is only used to confirm to the terminal that the network has received the SI request from the terminal.
  • the existing CR format may be used. Specifically, when the length of the information contained in the CR does not match the existing CR, the excess bits may be set to all 0s or all ones. Specifically, you can select the highest digit or the lowest digit or the number of digits in other departments as the extra digits.
  • a new CR format is introduced, such as introducing length indication information indicating the length information of the current CR.
  • the terminal sends an SI request, and there may be a situation in which the SI request fails to be sent or the SI fails to be received. For example, if the SI request is not sent successfully, or the SI request fails to receive the network confirmation message, or the network confirmation is received. Messages are unable to successfully receive SI.
  • the behavior of the terminal receiving the failure of the SI may be defined by the network. For example, the network broadcasts a timer. If the terminal fails to receive the SI, the terminal needs to wait for the timer to expire before sending the SI request.
  • the timer length can also be predefined by the protocol.
  • the network may send indication information indicating that the terminal performs cell reselection immediately when the SI request fails to be sent or the SI reception fails. Further, the terminal may consider that the current cell is barred, or consider that the current cell is barred within a period of time, the length of time is configured by the network, or the protocol is predefined.
  • the present application may divide a function module into a DU or a CU according to the above method example.
  • each function module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the present application is schematic, and is only a logical function division, and may be further divided in actual implementation.
  • FIG. 13 shows a schematic diagram of a DU structure
  • the DU 1300 includes a processing unit 1301 and a communication unit 1302, and the functions of the DU 1300 are respectively described below.
  • the processing unit 1301 is configured to control the communication unit 1302:
  • the processing unit 1301 is further configured to control the communication unit 1302:
  • the scheduling information is used to indicate a sending timing of the first system information.
  • the processing unit 1301 is further configured to control the communication unit 1302:
  • processing unit 1301 is further configured to:
  • the communication unit 1302 is controlled to broadcast the third indication.
  • the processing unit 1301 is specifically configured to control the communication unit 1302:
  • the SIB1 is broadcast, and the SIB1 includes the second indication.
  • the scheduling information includes at least one of the following:
  • the DU is presented in the form of dividing each functional module corresponding to each function, or the DU is presented in a form that divides each functional module in an integrated manner.
  • a “module” herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that provide the functionality described above. Device.
  • ASIC application-specific integrated circuit
  • FIG. 14 shows a schematic diagram of a CU structure including a processing unit 1401 and a communication unit 1402, and the functions of the CU 1400 are respectively described below.
  • the processing unit 1401 is configured to control the communication unit 1402:
  • processing unit 1401 is further configured to control the communication unit 1402:
  • processing unit 1401 is further configured to control the communication unit 1402:
  • processing unit 1401 is further configured to control the communication unit 1402:
  • the scheduling information includes at least one of the following:
  • the CU is presented in the form of dividing each functional module corresponding to each function, or the CU is presented in a form that divides each functional module in an integrated manner.
  • a “module” herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that provide the functionality described above. Device.
  • ASIC application-specific integrated circuit
  • the application also provides a computer readable storage medium having instructions stored therein that, when executed on a computer, cause the computer to perform the method performed by the DU described above.
  • the computer can be, for example, a DU.
  • the application also provides a computer readable storage medium having instructions stored therein that, when executed on a computer, cause the computer to perform the method performed by the CU described above.
  • the computer can be, for example, a CU.
  • the application provides a computer program product.
  • the computer program product includes computer software instructions executable by a processor to implement the flow in the communication method performed by the DU in any of the above embodiments.
  • the application provides a computer program product.
  • the computer program product includes computer software instructions that are loadable by a processor to implement the flow in the communication method performed by the CU in any of the above embodiments.
  • the present application also provides a chip, which may be a chip in a DU, the chip includes a processing unit, a transceiver unit, and optionally, the chip further includes a storage unit, and the chip may be used to enable any of the above-described execution by the DU.
  • the communication method is executed.
  • the present application also provides a chip, which may be a chip in a CU, the chip includes a processing unit, a transceiver unit, and optionally, the chip further includes a storage unit, and the chip may be used to enable any of the above-mentioned execution by the CU.
  • the communication method is executed.
  • Embodiment 1 a communication method, including:
  • the access network device sends control information to the terminal, where the control information is used to indicate at least one system information block sent in a first time interval of the first system information window, and a time frequency occupied by the at least one system information block a resource; wherein the at least one system information block is part or all of a system information block in a system information block transmittable in the first system information window;
  • the access network device sends the at least one system information block by using the time-frequency resource in the first time interval.
  • Embodiment 2 The method according to Embodiment 1, characterized in that
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource shared by the at least one system information block.
  • Embodiment 3 The method according to Embodiment 2, characterized in that
  • the at least one system information block is jointly encoded.
  • Embodiment 4 The method according to embodiment 1, characterized in that
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource occupied by each of the at least one system information block.
  • Embodiment 5 The method according to embodiment 4, characterized in that
  • the at least one system information block is independently encoded.
  • Embodiment 6 The method of any of embodiments 1 to 5, characterized in that
  • the scheduling period of the system information blocks transmittable in the first system information window is the same.
  • Embodiment 7 The method according to any one of embodiments 1 to 5, characterized in that
  • the scheduling period of the system information blocks that can be transmitted in the first system information window is different.
  • Embodiment 8 The method of any of embodiments 1 to 7, wherein
  • the control information includes a system information block type of each of the at least one system information block.
  • Embodiment 9 The method of any of embodiments 1 to 7, wherein
  • the control information includes a first bit bitmap, and the bit of the first bit bitmap corresponds to the system information block that can be sent in the first system information window, and corresponds to the at least one system information block.
  • the value of the bit is used to indicate that the at least one system information block is transmitted.
  • Embodiment 10 The method of any of embodiments 1 to 7, wherein
  • the control information includes a system information radio network temporary identifier SI RNTI corresponding to each of the at least one system information block.
  • the access network device receives a request message sent by the terminal, where the request message is used to request to acquire the at least one system information block.
  • Embodiment 12 The method of embodiment 11 wherein:
  • the request message includes a second bit bitmap, the number of bits of the second bit bitmap is a quantity of system information blocks that can be sent by the access network device, and the second bit bitmap is used to request to obtain the At least one or all of the system information blocks.
  • the access network device Transmitting, by the access network device, a third bit bitmap to the terminal, where the number of bits of the third bit bitmap is a quantity of system information blocks that can be sent by the access network device, and the at least one system The value of the bit corresponding to the information block is used to indicate that the at least one system information block is sent, and the third bit bitmap is used to indicate that the access network device successfully receives the request message.
  • Embodiment 14 is a communication method, comprising:
  • the terminal receives control information from the access network device, where the control information is used to indicate at least one system information block sent in a first time interval of the first system information window, and when the at least one system information block is occupied a frequency resource; wherein the at least one system information block is part or all of system information blocks in a system information block transmittable in the first system information window;
  • the terminal receives, according to the control information, the at least one system information block that is sent by the access network device by using the time-frequency resource in the first time interval.
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource shared by the at least one system information block.
  • Embodiment 16 The method of embodiment 15 wherein:
  • the at least one system information block is jointly encoded.
  • Embodiment 17 The method of embodiment 14 wherein:
  • the time-frequency resource occupied by the at least one system information block is a time-frequency resource occupied by each of the at least one system information block
  • Embodiment 18 The method of embodiment 17 wherein:
  • the at least one system information block is independently encoded.
  • the scheduling period of the system information blocks transmittable in the first system information window is the same.
  • Embodiment 20 The method of any of embodiments 14 to 18, wherein
  • the scheduling period of the system information blocks that can be transmitted in the first system information window is different.
  • the control information includes a system information block type of each of the at least one system information block.
  • Embodiment 22 The method of any of embodiments 14 to 20, wherein
  • the control information includes a first bit bitmap, and the bit of the first bit bitmap corresponds to the system information block that can be sent in the first system information window, and corresponds to the at least one system information block.
  • the value of the bit is used to indicate that the at least one system information block is transmitted.
  • Embodiment 23 The method of any of embodiments 14 to 20, wherein
  • the control information includes a system information radio network temporary identifier SI RNTI corresponding to each of the at least one system information block.
  • the terminal sends a request message to the access network device, where the request message is used to request to acquire the at least one system information block.
  • Embodiment 25 The method of embodiment 24, wherein
  • the request message includes a second bit bitmap, the number of bits of the second bit bitmap is a quantity of system information blocks that can be sent by the access network device, and the second bit bitmap is used to request to obtain the At least one or all of the system information blocks.
  • a third bit bitmap sent by the access network device where the number of bits in the bitmap is a quantity of system information blocks that can be sent by the access network device, and the at least one system information
  • the value of the bit corresponding to the block is used to indicate that the at least one system information block is sent
  • the third bit bitmap is used to indicate that the access network device successfully receives the request message.
  • Embodiment 27 An access network device, comprising: a memory and a processor, the memory for storing a computer program, the processor for calling and running the computer program from the memory, so that the access network device performs the implementation
  • Embodiment 28 A terminal, comprising: a memory and a processor, the memory for storing a computer program, the processor for calling and running the computer program from the memory, so that the terminal performs any of Embodiments 14 to 26 The communication method described.
  • Embodiment 1 A communication method, comprising:
  • the distributed unit DU receives a first request from the terminal, where the first request is used to request the first system information;
  • the DU broadcasts a second indication and the first system information, the second indication is used to indicate that the first system information is broadcast.
  • the DU receives the first system information from the CU.
  • Embodiment 4 The method according to embodiment 3, wherein the one or more SIBs comprise SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, SIB9, SIB10, SIB11, or SIB12.
  • the DU broadcasts SIB1, and the SIB1 includes the second indication.
  • SIB1 further includes scheduling information
  • scheduling information includes:
  • Embodiment 7 a communication method, comprising:
  • the central unit CU receives a first request from the distributed unit DU, the first request for requesting the first system information;
  • the CU sends a first indication to the DU, the first indication being used to indicate that the first system information is broadcast.
  • the CU sends the first system information to the DU.
  • Embodiment 10 The method according to embodiment 9, the one or more SIBs comprise SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, SIB9, SIB10, SIB11, or SIB12.
  • Embodiment 11 a distributed unit DU, comprising: a processor and a communication interface;
  • the processor is configured to read and run an instruction from the memory through the communication interface to cause the DU to perform the method of any of embodiments 1-6.
  • Embodiment 12 The DU of embodiment 11 further comprising the memory.
  • Embodiment 13 a centralized unit CU, comprising: a processor and a communication interface;
  • the processor is operative to read and run instructions from the memory through the communication interface to cause the CU to perform the method of any of embodiments 7-10.
  • Embodiment 14 The CU according to embodiment 13, characterized in that the memory is further included.
  • embodiments of the present application can be provided as a method, apparatus (device), or computer program product.
  • the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware aspects, which are collectively referred to herein as "module” or “system.”
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program is stored/distributed in a suitable medium, provided with other hardware or as part of the hardware, or in other distributed forms, such as over the Internet or other wired or wireless telecommunication systems.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

La présente invention concerne un procédé et un dispositif de communication. Le procédé comprend les étapes suivantes : réception par une unité distribuée (DU) d'un premier indicateur provenant d'une unité centrale (CU), le premier indicateur étant utilisé pour indiquer de premières informations système devant être diffusées ; et diffusion par la DU d'un second indicateur et des premières informations système, le second indicateur étant utilisé pour indiquer que les premières informations système sont diffusées. En conséquence, la DU peut diffuser correctement des informations système.
PCT/CN2018/091651 2017-06-16 2018-06-15 Procédé et dispositif de communication WO2018228562A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
KR1020197023535A KR20190103360A (ko) 2017-06-16 2018-06-15 통신 방법 및 장치
RU2019128215A RU2019128215A (ru) 2017-06-16 2018-06-15 Устройство и способ связи
JP2019545734A JP2020517131A (ja) 2017-06-16 2018-06-15 通信方法および装置
BR112019018750A BR112019018750A2 (pt) 2017-06-16 2018-06-15 método de comunicação, aparelho, meio de armazenamento legível por computador, produto de programa de computador, chip e sistema
CA3049931A CA3049931A1 (fr) 2017-06-16 2018-06-15 Procede et dispositif de communication
CN201880038558.5A CN111034226A (zh) 2017-06-16 2018-06-15 一种通信方法及装置
EP18818515.1A EP3573353B1 (fr) 2017-06-16 2018-06-15 Procédé et dispositif de communication
US16/460,711 US20190327665A1 (en) 2017-06-16 2019-07-02 Communication Method And Apparatus

Applications Claiming Priority (4)

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CN201710458756.4 2017-06-16
CN201710458756 2017-06-16
CN201710687843.7 2017-08-11
CN201710687843.7A CN109151737A (zh) 2017-06-16 2017-08-11 一种通信方法及装置

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CN114365547A (zh) * 2019-09-30 2022-04-15 华为技术有限公司 一种系统信息的传输方法和通信装置
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