WO2019183837A1 - 获取系统信息的方法、终端设备和网络设备 - Google Patents

获取系统信息的方法、终端设备和网络设备 Download PDF

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Publication number
WO2019183837A1
WO2019183837A1 PCT/CN2018/080906 CN2018080906W WO2019183837A1 WO 2019183837 A1 WO2019183837 A1 WO 2019183837A1 CN 2018080906 W CN2018080906 W CN 2018080906W WO 2019183837 A1 WO2019183837 A1 WO 2019183837A1
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WO
WIPO (PCT)
Prior art keywords
network device
random access
pdu
system information
terminal device
Prior art date
Application number
PCT/CN2018/080906
Other languages
English (en)
French (fr)
Inventor
尤心
石聪
杨宁
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to EP18911440.8A priority Critical patent/EP3737160B1/en
Priority to JP2020542429A priority patent/JP7128896B6/ja
Priority to CN202010291829.7A priority patent/CN111526561B/zh
Priority to KR1020207023222A priority patent/KR102438912B1/ko
Priority to CN201880057085.3A priority patent/CN111095986A/zh
Priority to AU2018415756A priority patent/AU2018415756A1/en
Priority to PCT/CN2018/080906 priority patent/WO2019183837A1/zh
Publication of WO2019183837A1 publication Critical patent/WO2019183837A1/zh
Priority to US16/932,604 priority patent/US11463941B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • the embodiments of the present application relate to the field of communications, and more specifically, to a method, a terminal device, and a network device for acquiring system information.
  • the RMSI may include a Master Information Block (MIB), System Information Blocks (SIB1), and System Information Blocks (SIB2).
  • MIB Master Information Block
  • SIB1 System Information Blocks
  • SIB2 System Information Blocks
  • the terminal device can acquire the MIB through a Physical Broadcast Channel (PBCH), acquire SIB1 and SIB2 through a Physical Downlink Shared Channel (PDSCH), and other SIs other than the RMSI can pass.
  • PBCH Physical Broadcast Channel
  • PDSCH Physical Downlink Shared Channel
  • the random access process is acquired. Therefore, how to obtain system information through the random access process is a problem worth studying.
  • a method, a terminal device, and a network device for acquiring system information are provided, and system information can be acquired according to a random access response RAR.
  • the first aspect provides a method for acquiring system information, including: a terminal device sends a first random access preamble to a network device; and the terminal device receives a media access control MAC protocol data unit PDU sent by the network device. And the MAC PDU includes at least one random access response (RAR), and the terminal device determines, according to the at least one RAR, system information to be sent by the network device.
  • a terminal device sends a first random access preamble to a network device
  • the terminal device receives a media access control MAC protocol data unit PDU sent by the network device.
  • the MAC PDU includes at least one random access response (RAR)
  • RAR random access response
  • the terminal device may send a random access preamble for requesting acquisition of system information to the network device by using a random access procedure. Further, the network device may reply to the terminal device with a MAC PDU, where the MAC PDU includes at least one RAR, thereby The terminal device may determine system information to be sent by the network device according to the at least one RAR, so that system information may be received.
  • system information to be sent by the network device may include system information to be broadcasted by the network and/or system information sent by the network device by using high layer signaling, such as radio resource control (RRC) signaling.
  • RRC radio resource control
  • the application embodiment does not specifically limit the specific manner in which the network device transmits system information.
  • the first random access preamble may be used to notify the network device that the random access initiated by the terminal device is used to request to acquire system information, or the first random access preamble. It can be used to indicate that the terminal device wants to acquire system information through random access.
  • the first random access preamble may be a specific Preamble for requesting to acquire system information, and if the first random access preamble received by the network device is a specific Preamble, the terminal device may be determined.
  • the random access initiated is used to request the acquisition of the system information, and the specific Preamble may include one or more, which is not limited by the embodiment of the present application.
  • the first random access preamble is used to indicate system information that the terminal device requests to acquire.
  • the resource used by the terminal device to send the first random access preamble may be used to indicate that the terminal device requests the acquiring system.
  • the information may be determined by the network device according to the PRACH resource used by the terminal device to send the first random access preamble to determine the target system information that the terminal device wants to acquire.
  • PRACH physical random access channel
  • the terminal device sends the first random access preamble to the network device, where the terminal device sends the first random access preamble to the network device in a specific period.
  • the network device may determine that the terminal device initiates according to at least one of a random access preamble sent by the terminal device, or a resource used to send a random access preamble, or a time for sending a random access preamble. Random access is used to request access to the system. That is, at least one of a random access preamble sent by the terminal device, or a resource used for transmitting the random access preamble or a time for transmitting the random access preamble may be used to indicate that the terminal device initiates Random access is used to request access to system information.
  • the specific period is configured by the network device or determined according to an update period of system information.
  • the method further includes: the terminal device decoding the MAC PDU according to a specific random access radio network temporary identifier RA-RNTI.
  • the specific RA-RNTI is a reserved RA-RNTI configured by the network device.
  • the specific RA-RNTI is configured by the network device by using system information or radio resource control RRC signaling.
  • the at least one RAR includes indication information, where the indication information is used to indicate system information that the network device is to send.
  • the determining, by the terminal device, the system information to be sent by the network device according to the at least one RAR includes: the terminal device according to the indication information included in the at least one RAR, Determining system information to be sent by the network device.
  • the indication information is at least one random access preamble identifier RAPID, wherein each of the at least one RAPID is used to indicate at least one system information.
  • the MAC PDU includes at least one MAC sub-PDU, and the at least one MAC sub-PDU corresponds to the at least one RAR, where each RAPID is carried in a MAC sub-portion corresponding to each RAR.
  • the sub-packet header of the PDU, and the MAC sub-PDU does not include a data portion.
  • the terminal device can determine system information to be sent by the network device by using at least one RAPID carried in the MAC PDU replied by the network device, and further, can receive system information, for example, the terminal device can perform system according to its own requirements. The information is received, or all the system information is also received, which is not limited by the embodiment of the present application.
  • the indication information indicates, by using a bit mapping manner, system information to be sent by the network device.
  • the indication information is carried in a data portion of the MAC sub-PDU.
  • the sub-packet header of the MAC sub-PDU further includes a RAPID, configured to indicate a random access preamble corresponding to the at least one RAR.
  • the second aspect provides a method for acquiring system information, including: receiving, by a network device, a first random access preamble sent by a first terminal device, where the first random access preamble is used to request to acquire system information;
  • the network device replies to the medium access control MAC protocol data unit PDU, the MAC PDU includes at least one random access response RAR, and the at least one RAR is used to determine system information to be sent by the network device.
  • the network device may receive a random access preamble for the terminal device to request to acquire system information, and further, may reply the MAC PDU to the terminal device, where the MAC PDU may include at least one RAR, so that the terminal device may be according to the at least one RAR. , determining system information to be sent by the network device, and further, receiving system information
  • the at least one RAR includes indication information, where the indication information is used to indicate system information that the network device is to send.
  • the indication information is at least one RAPID, wherein each of the at least one RAPID is used to indicate at least one system information.
  • the MAC PDU includes at least one MAC sub-PDU, and the at least one MAC sub-PDU corresponds to the at least one RAR, where each RAPID is carried in a MAC sub-portion corresponding to each RAR.
  • the sub-packet header of the PDU, and the MAC sub-PDU does not include a data portion.
  • the indication information indicates, by using a bit mapping manner, system information to be sent by the network device.
  • the indication information is carried in a data portion of the MAC sub-PDU.
  • the sub-packet header of the MAC sub-PDU further includes a RAPID, configured to indicate a random access preamble corresponding to the at least one RAR.
  • the method further includes the network device encoding the MAC PDU according to a specific random access radio network temporary identifier RA-RNTI.
  • the receiving, by the network device, the first random access preamble sent by the first terminal device the network device receiving, by the network device, the first random connection sent by the first terminal device in a specific period Enter the preamble.
  • the method further includes:
  • the specific period is configured by the network device or determined according to an update period of system information.
  • a terminal device for performing the method of any of the above first aspect or any of the possible implementations of the first aspect.
  • the terminal device comprises means for performing the method of any of the first aspect or the first aspect of the first aspect described above.
  • a terminal device comprising: a memory, a processor, an input interface, and an output interface.
  • the memory, the processor, the input interface, and the output interface are connected by a bus system.
  • the memory is for storing instructions for executing the memory stored instructions for performing the method of any of the first aspect or the first aspect of the first aspect.
  • a network device for performing the method of any of the foregoing second aspect or any of the possible implementations of the second aspect.
  • the network device comprises means for performing the method of any of the possible implementations of the second aspect or the second aspect described above.
  • a network device comprising: a memory, a processor, an input interface, and an output interface.
  • the memory, the processor, the input interface, and the output interface are connected by a bus system.
  • the memory is for storing instructions for executing the memory stored instructions for performing the method of any of the possible implementations of the second aspect or the second aspect above.
  • a computer storage medium for storing computer software instructions for performing the method of any of the above first aspect or any of the possible implementations of the first aspect, comprising program.
  • a computer program product comprising instructions, when executed on a computer, causes the computer to perform the method of any of the above-described first aspect or any of the alternative implementations of the first aspect.
  • a ninth aspect a computer storage medium for storing computer software instructions for performing the method of any of the above second aspect or any of the possible implementations of the second aspect, comprising program.
  • a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the alternative aspects of the second aspect or the second aspect.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a method for acquiring system information according to an embodiment of the present application.
  • FIG. 3 shows a schematic diagram of an example of indication information according to an embodiment of the present application.
  • FIG. 4 shows another example of the indication information according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a method for acquiring system information according to another embodiment of the present application.
  • FIG. 6 shows a schematic block diagram of a terminal device of an embodiment of the present application.
  • FIG. 7 shows a schematic block diagram of a network device of another embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a terminal device of an embodiment of the present application.
  • FIG. 9 shows a schematic block diagram of a network device of another embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UPD Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • FIG. 1 shows a wireless communication system 100 to which an embodiment of the present application is applied.
  • the wireless communication system 100 can include a network device 110.
  • Network device 100 can be a device that communicates with a terminal device.
  • Network device 100 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area.
  • the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or may be a base station (NodeB, NB) in a WCDMA system, or may be an evolved base station in an LTE system.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • the network device can be a relay station, an access point, an in-vehicle device, a wearable device, A network side device in a future 5G network or a network device in a publicly available Public Land Mobile Network (PLMN) in the future.
  • PLMN Public Land Mobile Network
  • the wireless communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110.
  • Terminal device 120 can be mobile or fixed.
  • the terminal device 120 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless communication.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • FIG. 2 is a schematic flowchart of a method for acquiring system information according to an embodiment of the present application. As shown in FIG. 2, the method 200 may include:
  • the terminal device sends a first random access preamble to the network device.
  • the terminal device receives a media access control MAC protocol data unit PDU sent by the network device, where the MAC PDU includes at least one random access response RAR;
  • the terminal device determines, according to the at least one RAR, system information to be sent by the network device.
  • the first random access preamble may be used to notify the network device that the random access initiated by the terminal device is used to request to obtain system information, or The first random access preamble may be used to indicate that the terminal device wants to acquire system information by using random access.
  • the terminal device may send a random access preamble for requesting acquisition of system information to the network device by using a random access procedure. Further, the network device may reply to the terminal device for a Media Access Control (MAC) protocol.
  • MAC Media Access Control
  • a data unit (PDU) the MAC PDU includes at least one RAR, so that the terminal device can determine system information to be sent by the network device according to the at least one RAR, and further the terminal device can receive system information, for example, the terminal The device can receive system information according to its own needs.
  • system information to be sent by the network device may include system information to be broadcasted by the network and/or system information sent by the network device by using high layer signaling, such as radio resource control (RRC) signaling.
  • RRC radio resource control
  • the application embodiment does not specifically limit the specific manner in which the network device transmits system information.
  • the first random access preamble may be a specific preamble (Preamble) for requesting to acquire system information, if the first random access preamble received by the network device is The specific Preamble may be used to determine that the random access initiated by the terminal device is used to request to obtain system information, where the specific Preamble may include one or more, which is not limited by the embodiment of the present application.
  • Preamble a specific preamble
  • the first random access preamble sent by the terminal device may be used to indicate target system information that the terminal device requests to acquire, so that the network device may be configured according to the first random By accessing the preamble, the target system information that the terminal device wants to acquire can be determined, and then the system information can be received.
  • the random access preamble may be used to indicate one or a group of system information, or the random access preamble may have a corresponding relationship with system information, and therefore, through different random access.
  • the preamble can indicate different system information.
  • the resource used by the terminal device to send the first random access preamble may be used to indicate the terminal device request.
  • a physical random access channel (PRACH) resource may be used to indicate the terminal device request.
  • PRACH physical random access channel
  • the PRACH resource used by the terminal device to send the random access preamble may be used to indicate one or a group of system information, or the PRACH resource that sends the random access preamble may have a corresponding relationship with the system information, and therefore, different The PRACH resource can indicate corresponding system information.
  • the PRACH resource used by the terminal device to send the random access preamble for requesting to acquire the system information may also be a specific PRACH resource, and therefore, the network device may determine the terminal device by using the PRACH resource.
  • the random access initiated is used to request access to system information.
  • the S210 may include:
  • the terminal device sends the first random access preamble to the network device in a specific period.
  • the network device may be considered as a random access for requesting to acquire system information, or the network device may be according to the terminal.
  • the time when the device sends the random access preamble determines whether the random access is used to request to obtain system information. If the sending time of the random access preamble is within the specific period, the network device may be configured to request to obtain system information. Otherwise, it can be considered a normal random access procedure.
  • the network device may receive the random access preamble sent by the at least one terminal device, or, in the specific period, the network device may collect the random access preamble sent by the at least one terminal device, and further After the specific period, the network device may reply to a random access response (RAR), where the RAR may include a response to the random access preamble sent by the at least one terminal device, that is, the network device.
  • RAR random access response
  • the response of the random access preamble for the at least one terminal device may be encapsulated in one RAR, that is, the response of the random access preamble for the at least one terminal device is sent through one RAR, and thus, the signaling overhead can be reduced.
  • the specific period is configured by the network device, or determined according to a modification period of the system information, or specified by the communication system, or preset on the terminal device.
  • the embodiment of the present application does not limit this.
  • the specific period may be a period of time after the update period of the system information, or a period of time before the update period of the system information, or may be a period of the update period of the system information, etc. This example does not limit this.
  • the network device may determine, according to at least one of a random access preamble sent by the terminal device, or a resource used to send the random access preamble or a time to send a random access preamble, the random device initiated by the terminal device.
  • Access is used to request access to the system. That is, at least one of a random access preamble sent by the terminal device, or a resource used for transmitting the random access preamble or a time for transmitting the random access preamble may be used to indicate that the terminal device initiates Random access is used to request access to system information.
  • the network device may determine the random access initiated by the terminal device when the random access preamble sent by the terminal device is a specific Preamble, or the time when the random access preamble is sent falls within the specific period. Is used to request access to system information.
  • the terminal device may listen to the PDCCH and acquire the RAR that the network device replies.
  • the time-frequency resource location where the physical downlink control channel (PDCCH) is located may be indicated by Control Resource Set (CORSET) information, and therefore, the terminal device may be indicated by CORSET.
  • CORSET Control Resource Set
  • the resource listens to the PDCCH and obtains the RAR that the network device replies.
  • the receiving, by the terminal device, the MAC PDU replied by the network device may be after a specific period, that is, the MAC PDU replied by the network device may include sending to at least one terminal device in a specific period. The response of the random access preamble.
  • the network device may use the specific The identifier (for example, a Random Access Radio Network Temporary Identifier (RA-RNTI)) encodes the MAC PDU, so that the terminal device that receives the MAC PDU can also use the specific identifier, for example, The specific RA-RNTI decodes the MAC PDU and obtains the RAR included in the MAC PDU.
  • the identifier for example, a Random Access Radio Network Temporary Identifier (RA-RNTI)
  • RA-RNTI Random Access Radio Network Temporary Identifier
  • the specific RA-RNTI used to decode the MAC PDU is a reserved RA-RNTI, where the reserved RA-RNTI may be configured by the network device, or by the communication system.
  • the embodiment of the present application does not limit this.
  • the specific RA-RNTI may also be other RA-RNTIs as long as the existing functions of the RA-RNTI are not affected.
  • the specific RA-RNTI may be different from the value of other RA-RNTIs for random access, or the value of the specific RA-RNTI is not included in the value range of other RA-RNTIs. That is, the specific RA-RNTI is not used for the normal random access procedure.
  • the specific RA-RNTI is configured by the network device by using system information (for example, SIB1, or SIB2) or Radio Resource Control (RRC) signaling, or may be through other signaling.
  • system information for example, SIB1, or SIB2
  • RRC Radio Resource Control
  • the physical layer signaling configuration is not limited in this embodiment of the present application.
  • the system information to be sent by the network device may be determined according to at least one RAR included in the MAC PDU.
  • the at least one RAR may include indication information for indicating system information to be sent by the network device, and optionally, the indication information may be explicit or implicit indication information, for example, The indication information may be used to indicate an identifier or an index of the system information to be sent by the network device, and the manner of indicating the indication information in the embodiment of the present application is not specifically limited.
  • the indication information is at least one random access preamble identifier RAPID, wherein each RAPID of the at least one RAPID is used to indicate at least one system information.
  • each RAR may include a random access preamble identifier (RAPID), and the RAPID included in each RAR may be used to indicate one or more systems to be sent by the network device. information.
  • RAPID random access preamble identifier
  • the MAC PDU may include at least one MAC sub (sub) PDU, where the at least one MAC sub PDU corresponds to the at least one RAR, and the RAPID included in each RAR is carried in each RAR.
  • the sub-packet header of the corresponding MAC subPDU, and the MAC subPDU does not include the data part.
  • a MAC sub PDU corresponding to one RAR may be understood as the MAC sub PDU being the RAR itself, or it may be understood that one RAR is carried in one MAC sub PDU.
  • the MAC sub PDU corresponding to each RAR may include only a subheader, and does not include a payload portion.
  • the RAPID included in each RAR may be carried in a subheader of the MAC subPDU; or
  • the MAC sub-PDU corresponding to each RAR may also include a subheader and a payload.
  • the RAPID may be carried in the subheader of the MAC sub-PDU or in the payload of the MAC sub-PDU.
  • the MAC PDU may further include a backoff indicator (BI) indication field.
  • BI backoff indicator
  • the BI indication field is located in a first MAC subPDU of the MAC PDU.
  • the MAC PDU may include n RARs, which are denoted as RAR1 RARAR, corresponding to MAC sub-PDU 1 to MAC sub-PDU n, respectively.
  • the sub-PDUs may include a subheader part, and the RAPID included in each RAR may be carried in the subheader of the corresponding MAC sub-PDU.
  • the RAPID1 included in the RAR1 may be carried in the subheader of the MAC subPDU1
  • the RAPIDn included in the RARn may be carried in the MAC.
  • the subheader of subPDUn is medium. Thereby, the terminal device can determine the system information to be transmitted by the network device according to the RAPID included in each MAC subPDU.
  • E An extension field that indicates whether there are other domains in the MAC header.
  • T Type field, used to indicate whether the MAC sub-packet header contains RAPID or BI.
  • R Reserved bit, which can be set to "0".
  • a backoff time indication field used to indicate the maximum waiting time for the terminal device to re-initiate random access.
  • RAPID Used to indicate the random access preamble that has been sent.
  • the MAC PDU may further include a MAC sub PDU 0, where the first MAC sub PDU of the MAC PDU is used to carry the BI indication domain.
  • the MAC PDU may further include padding bits, for example, zero bits or reserved bits, and the like.
  • the terminal device may determine the system information to be sent by the network device by using at least one RAPID carried in the MAC PDU replied by the network device.
  • the system information to be sent by the network device may be the network device according to the at least one terminal device.
  • the system information to be sent may be determined according to a random access preamble sent by at least one terminal device in a specific period.
  • the system information to be sent may include the specific period.
  • the at least one terminal device requests some or all of the acquired system information, or may also include other SIs, which is not limited by the embodiment of the present application.
  • the terminal device After the terminal device determines which system information is to be broadcast by the network device, can the system information be received, for example, the terminal device can receive the system information according to the requirements of the terminal device.
  • System information is not specifically limited.
  • the terminal device may only receive the system information that it requests to obtain, or may also receive other system information than the system information that it requests to acquire at the same time.
  • the terminal device requests to acquire the SIB3, and the network device subsequently broadcasts. SIB3 and SIB4, the terminal device can only receive SIB1, or if the terminal device receives SIB3 and SIB4 according to its own needs.
  • Embodiment 2 The indication information indicates system information to be sent by the network device in a bit mapping manner.
  • the network device can directly indicate the system information to be sent through a bitmap.
  • the MAC PDU may include only one RAR.
  • the indication information included in the RAR may be carried in a MAC subPDU (indicated as case 1).
  • the MAC PDU includes one RAR, and the RAR may correspond to the MAC sub PDU1, and the indication information included in the RAR may be carried in the MAC sub PDU1, and the indication information may indicate whether multiple system information (for example, SIB3 to SIB6) is subsequently followed by a bitmap manner. Will broadcast.
  • the MAC PDU may also include multiple RARs.
  • the MAC PDU may include multiple MAC sub PDUs, which respectively correspond to multiple RARs, and each MAC sub-PDU corresponding to the RAR may include an indication information for indicating The system information to be sent by the network device (refer to the case 2).
  • the content indicated by the indication information included in each MAC sub-PDU may be the same, or may be different. .
  • the MAC PDU includes n RARs, and the n RARs respectively correspond to MAC subPDUs 1 to MAC subPDUs, where n is a positive integer greater than 1.
  • any one of the MAC subPDUs 1 to the MAC subPDUs may include
  • the indication information, the content indicated by the indication information included in the multiple MAC subPDUs may be the same.
  • the indication information included in the MAC subPDU1 to the MAC subPDUn may indicate multiple system information in a bitmap manner (for example, SIB3 to SIB6). Whether it will be broadcast later.
  • the content indicated by the indication information included in each MAC subPDU may be different.
  • the indication information included in each MAC subPDU may be used to indicate whether a corresponding group of SSBs will be broadcast subsequently, for example, MAC subPDU1.
  • the indication information included may be used to indicate whether the SIB3 to the SIB5 are to be broadcasted subsequently.
  • the indication information included in the MAC sub-PDU 2 may be used to indicate whether the SIB6 and the SIB7 are subsequently broadcasted.
  • the indication information included in the MAC sub-PDU 3 may be used to indicate the SIB8 to the SIB10. Whether it will be broadcast later.
  • the indication information included in each of the MAC sub-PDUs is used to indicate whether the SSBs are to be broadcasted by the network device, or the communication system, and the like.
  • the indication information that is included in the RAR may be carried in the subheader or the payload of the MAC sub-PDU, which is not specifically limited in this embodiment of the present application.
  • the MAC PDU may also include a backoff indicator (BI) indication field.
  • BI backoff indicator
  • the BI indication domain is located in the first MAC subPDU of the MAC PDU.
  • FIG. 4 is exemplified by case 1, and for case 2, indication may be made in a similar manner, and details are not described herein again.
  • the MAC PDU includes an RAR corresponding to the MAC sub PDU1, and the MAC sub PDU1 may include indication information.
  • the indication information may be carried in the payload portion of the MAC subPDU1 (ie, MAC RAR). Indicates which system information is broadcast in multiple system information.
  • the indication information may be used to indicate which system information in SI1 to SI6 is to be broadcasted later (corresponding to the example 1).
  • the SI corresponding bit may be used to indicate that the SI is a system to be sent.
  • the information may be used to indicate that the SI is system information to be transmitted when the bit corresponding to the SI is 0.
  • the indication information may be used to indicate which system information in the SIB3 to the SIB7 is to be broadcasted later (corresponding to the example 2).
  • the SIB may be used to indicate that the SIB is to be sent.
  • the system information may also be used to indicate that the SIB is system information to be sent when the bit corresponding to the SIB is 0.
  • the MAC subPDU 0 may also be included as the first MAC sub PDU of the MAC PDU, for carrying the BI.
  • the MAC PDU may further include padding bits, for example, zero bits or reserved bits, and the like.
  • a method for acquiring system information according to an embodiment of the present application is described in detail from the perspective of a terminal device.
  • the acquisition according to another embodiment of the present application is described in detail from the perspective of the network device.
  • the method of system information It should be understood that the description on the network device side and the description on the terminal device side correspond to each other. For a similar description, refer to the above. To avoid repetition, details are not described herein again.
  • FIG. 5 is a schematic flowchart of a method 500 for acquiring system information according to another embodiment of the present application.
  • the method 500 may be performed by a network device in the vehicle networking system shown in FIG. 1, as shown in FIG. 500 includes the following:
  • the network device receives a first random access preamble sent by the first terminal device, where the first random access preamble is used to request to acquire system information.
  • the network device replies to a media access control MAC protocol data unit PDU, where the MAC PDU includes at least one random access response (RAR), and the at least one RAR is used to determine system information to be sent by the network device.
  • RAR random access response
  • the at least one RAR includes indication information, where the indication information is used to indicate system information to be sent by the network device.
  • the indication information is at least one RAPID, wherein each RAPID of the at least one RAPID is used to indicate at least one system information.
  • the MAC PDU includes at least one MAC sub-PDU, where the at least one MAC sub-PDU corresponds to the at least one RAR, where each RAPID is carried by a sub- MAC sub-PDU of each RAR.
  • the MAC sub-PDU does not include a data portion.
  • the indication information indicates system information to be sent by the network device in a bit mapping manner.
  • the indication information is carried in a data portion of the MAC sub-PDU.
  • the sub-packet header of the MAC sub-PDU further includes a RAPID, configured to indicate a random access preamble corresponding to the at least one RAR.
  • the method 500 further includes:
  • the network device encodes the MAC PDU according to a specific random access wireless network temporary identity RA-RNTI.
  • the network device receives the first random access preamble sent by the first terminal device, including:
  • the network device receives the first random access preamble sent by the first terminal device in a specific period.
  • the method 500 further includes:
  • the particular period is configured by the network device or based on an update period of system information.
  • the embodiment of the method of the present application is described in detail below with reference to FIG. 2 to FIG. 5 .
  • the device embodiment of the present application is described in detail below with reference to FIG. 6 to FIG. 9 . It should be understood that the device embodiment and the method embodiment correspond to each other, similarly. The description of the method can be referred to the method embodiment.
  • FIG. 6 shows a schematic block diagram of a terminal device 600 in accordance with an embodiment of the present application.
  • the terminal device 600 includes:
  • the communication module 610 is configured to send a first random access preamble to the network device, and receive a media access control MAC protocol data unit PDU sent by the network device, where the MAC PDU includes at least one random access response RAR;
  • the determining module 620 is configured to determine, according to the at least one RAR, system information to be sent by the network device.
  • the terminal device 600 further includes:
  • a decoding module configured to decode the MAC PDU according to a specific random access wireless network temporary identifier RA-RNTI.
  • the particular RA-RNTI is a reserved RA-RNTI configured by the network device.
  • the specific RA-RNTI is configured by the network device through system information or radio resource control RRC signaling.
  • the at least one RAR includes indication information, where the indication information is used to indicate system information to be sent by the network device.
  • the determining module 620 is specifically configured to:
  • the indication information is at least one random access preamble identifier RAPID, wherein each RAPID of the at least one RAPID is used to indicate at least one system information.
  • the MAC PDU includes at least one MAC sub-PDU, where the at least one MAC sub-PDU corresponds to the at least one RAR, where each RAPID is carried by a sub- MAC sub-PDU of each RAR.
  • the MAC sub-PDU does not include a data portion.
  • the indication information indicates system information to be sent by the network device in a bit mapping manner.
  • the indication information is carried in a data portion of the MAC sub-PDU.
  • the sub-packet header of the MAC sub-PDU further includes a RAPID, configured to indicate a random access preamble corresponding to the at least one RAR.
  • the communications module 610 is further configured to:
  • the first random access preamble is transmitted to the network device in a specific period.
  • the particular period is configured by the network device or based on an update period of system information.
  • the first random access preamble is used to indicate system information that the terminal device requests to acquire.
  • terminal device 600 may correspond to the terminal device in the method embodiment of the present application, and the foregoing operations and/or functions of the respective units in the terminal device 600 respectively implement the method shown in FIG. 2 .
  • the corresponding process of the terminal device in 200 is not described here for brevity.
  • FIG. 7 is a schematic block diagram of a network device according to an embodiment of the present application.
  • the network device 700 of Figure 7 includes:
  • the communication module 710 is configured to receive a first random access preamble sent by the first terminal device, where the first random access preamble is used to request to acquire system information, and the media access control MAC protocol data unit PDU, the MAC address
  • the PDU includes at least one random access response RAR, and the at least one RAR is used to determine system information to be sent by the network device.
  • the at least one RAR includes indication information, where the indication information is used to indicate system information to be sent by the network device.
  • the indication information is at least one RAPID, wherein each RAPID of the at least one RAPID is used to indicate at least one system information.
  • the MAC PDU includes at least one MAC sub-PDU, where the at least one MAC sub-PDU corresponds to the at least one RAR, where each RAPID is carried by a sub- MAC sub-PDU of each RAR.
  • the MAC sub-PDU does not include a data portion.
  • the indication information indicates system information to be sent by the network device in a bit mapping manner.
  • the indication information is carried in a data portion of the MAC sub-PDU.
  • the sub-packet header of the MAC sub-PDU further includes a RAPID, configured to indicate a random access preamble corresponding to the at least one RAR.
  • the network device further includes:
  • an encoding module configured to encode the MAC PDU according to a specific random access wireless network temporary identifier RA-RNTI.
  • the communications module 710 is further configured to:
  • the communications module 710 is specifically configured to:
  • the particular period is configured by the network device or based on an update period of system information.
  • the network device 700 may correspond to (for example, may be configured or be itself) the network device described in the foregoing method 500, and each module or unit in the network device 700 is used to perform the network in the method 500, respectively. Detailed descriptions of the operations and processes performed by the device are omitted here to avoid redundancy.
  • the embodiment of the present application further provides a terminal device 800, which may be the terminal device 600 in FIG. 6, which can be used to execute a terminal device corresponding to the method 200 in FIG. content.
  • the terminal device 800 includes an input interface 810, an output interface 820, a processor 830, and a memory 840.
  • the input interface 810, the output interface 820, the processor 830, and the memory 840 can be connected by a bus system.
  • the memory 840 is configured to store programs, instructions or code.
  • the processor 830 is configured to execute a program, an instruction or a code in the memory 840 to control the input interface 810 to receive a signal, control the output interface 820 to send a signal, and complete the operations in the foregoing method embodiments.
  • the processor 830 may be a central processing unit (“CPU"), and the processor 830 may also be other general-purpose processors, digital signal processors ( DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 840 can include read only memory and random access memory and provides instructions and data to the processor 830. A portion of the memory 840 may also include a non-volatile random access memory. For example, the memory 840 can also store information of the device type.
  • each content of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 830 or an instruction in a form of software.
  • the content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 840, and the processor 830 reads the information in the memory 840 and completes the contents of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the determining module 620 and the decoding module included in the terminal device 600 in FIG. 6 may be implemented by the processor 830 of FIG. 8.
  • the communication module 610 included in the terminal device 600 in FIG. 6 may use the input of FIG. Interface 810 and the output interface 820 are implemented.
  • the embodiment of the present application further provides a network device 900, which may be the network device 700 in FIG. 7, which can be used to execute a network device corresponding to the method 500 in FIG. content.
  • the network device 900 includes an input interface 910, an output interface 920, a processor 930, and a memory 940.
  • the input interface 910, the output interface 920, the processor 930, and the memory 940 can be connected by a bus system.
  • the memory 940 is for storing programs, instructions or code.
  • the processor 930 is configured to execute a program, an instruction, or a code in the memory 940 to control the input interface 910 to receive a signal, control the output interface 920 to transmit a signal, and complete the operations in the foregoing method embodiments.
  • the processor 930 may be a central processing unit (“CPU"), and the processor 930 may also be other general-purpose processors, digital signal processors ( DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 940 can include read only memory and random access memory and provides instructions and data to the processor 930. A portion of the memory 940 can also include a non-volatile random access memory. For example, the memory 940 can also store information of the device type.
  • each content of the above method may be completed by an integrated logic circuit of hardware in the processor 930 or an instruction in a form of software.
  • the content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 940, and the processor 930 reads the information in the memory 940 and completes the contents of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the communication module 710 included in the network device 700 in FIG. 7 can be implemented by using the input interface 910 and the output interface 920 of FIG. 9.
  • the coding module included in the network device 700 in FIG. 7 can be used in FIG.
  • the processor 930 is implemented.
  • the embodiment of the present application further provides a computer readable storage medium storing one or more programs, the one or more programs including instructions, when the portable electronic device is included in a plurality of applications When executed, the portable electronic device can be caused to perform the method of the embodiment shown in Figures 2 through 5.
  • the embodiment of the present application also proposes a computer program comprising instructions which, when executed by a computer, enable the computer to execute the corresponding flow of the method of the embodiment shown in Figures 2 to 5.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本申请实施例公开了一种获取系统信息的方法、终端设备和网络设备,该方法包括:终端设备向网络设备发送第一随机接入前导码;所述终端设备接收所述网络设备发送的媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括至少一个随机接入响应RAR;所述终端设备根据所述至少一个RAR,确定所述网络设备待发送的系统信息。

Description

获取系统信息的方法、终端设备和网络设备 技术领域
本申请实施例涉及通信领域,并且更具体地,涉及获取系统信息的方法、终端设备和网络设备。
背景技术
在5G新无线(New Radio,NR)系统中,终端设备需要接入网络时,需要从网络获取系统信息(System Information,SI),例如,剩余最小系统信息(Remaining Minimum System Information,RMSI),其中,该RMSI可以包括主信息块(Master Information Block,MIB)、系统信息块1(System Information Blocks,SIB1)和系统信息块2(System Information Blocks,SIB2)。
在该NR系统中,终端设备可以通过物理广播信道(Physical Broadcast Channel,PBCH)获取MIB,通过物理下行共享信道(Physical Downlink Shared Channel,PDSCH)获取SIB1和SIB2,除RMSI之外的其他SI可以通过随机接入过程获取,因此,如何通过随机接入过程获取系统信息是一项值得研究的问题。
发明内容
提供了一种获取系统信息的方法、终端设备和网络设备,能够根据随机接入响应RAR获取系统信息。
第一方面,提供了一种获取系统信息的方法,包括:终端设备向网络设备发送第一随机接入前导码;所述终端设备接收所述网络设备发送的媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括至少一个随机接入响应RAR;所述终端设备根据所述至少一个RAR,确定所述网络设备待发送的系统信息。
因此,终端设备可以通过随机接入过程向网络设备发送用于请求获取系统信息的随机接入前导码,进一步的,网络设备可以向终端设备回复MAC PDU,该MAC PDU中包括至少一个RAR,从而终端设备可以根据该至少一个RAR确定网络设备待发送的系统信息,从而可以进行系统信息的接收。
可选地,该网络设备待发送的系统信息可以包括网络待广播的系统信息和/或网络设备通过高层信令(例如无线资源控制(Radio Resource Control,RRC)信令)发送的系统信息,本申请实施例并不特别限定网络设备发送系统信息的具体方式。
可选地,所述第一随机接入前导码可以用于通知网络设备该终端设备发起的此次随机接入是用于请求获取系统信息的,或者说,所述第一随机接入前导码可以用于指示所述终端设备想要通过随机接入获取系统信息。
可选地,所述第一随机接入前导码可以为用于请求获取系统信息的特定的Preamble,若网络设备接收到的该第一随机接入前导码为特定的Preamble,则可以确定终端设备发起的此次随机接入是用于请求获取系统信息的,其中,该特定的Preamble可以包括一个或多个,本申请实施例对此不作限定。
可选地,所述第一随机接入前导码用于指示所述终端设备请求获取的系统信息。
可选地,所述终端设备发送所述第一随机接入前导码所用的资源(即物理随机接入信道(Physical Random Access Channel,PRACH)资源)可以用于指示所述终端设备请求获取的系统信息,从而,网络设备可以根据终端设备发送该第一随机接入前导码所采用的PRACH资源确定该终端设备想要获取的目标系统信息。
在一些可能的实现方式中,所述终端设备向网络设备发送第一随机接入前导码,包括:所述终端设备在特定周期内向所述网络设备发送所述第一随机接入前导码。
因此,所述网络设备可以根据终端设备发送的随机接入前导码、或发送随机接入前导码所使用的资源或发送随机接入前导码的时间中的至少一项,确定所述终端设备发起的随机接入是用于请求获取系统的。也就是说,终端设备发送的随机接入前导码、或发送随机接入前导码所使用的资源或发送随机接入前导码的时间中的至少一项,都可以用于指示该终端设备发起的随机接入是用于请求获取系统信息的。
在一些可能的实现方式中,所述特定周期是由所述网络设备配置的,或者根据系统信息的更新周期确定的。
在一些可能的实现方式中,所述方法还包括:所述终端设备根据特定的随机接入无线网络临时标识RA-RNTI,解码所述MAC PDU。
在一些可能的实现方式中,所述特定的RA-RNTI是由所述网络设备配置的预留RA-RNTI。
在一些可能的实现方式中,所述特定的RA-RNTI是由所述网络设备通过系统信息或无线资源控制RRC信令配置的。
在一些可能的实现方式中,所述至少一个RAR中包括指示信息,所述指示信息用于指示所述网络设备待发送的系统信息。
在一些可能的实现方式中,所述终端设备根据所述至少一个RAR,确定所述网络设备待发送的系统信息,包括:所述终端设备根据所述至少一个RAR中包括的所述指示信息,确定所述网络设备待发送的系统信息。
在一些可能的实现方式中,所述指示信息为至少一个随机接入前导码标识RAPID,其中,所述至少一个RAPID中的每个RAPID用于指示至少一个系统信息。
在一些可能的实现方式中,所述MAC PDU包括至少一个MAC子PDU,所述至少一个MAC子PDU与所述至少一个RAR对应,所述每个RAPID承载于所述每个RAR对应的MAC子PDU的子包 头中,且所述MAC子PDU不包括数据部分。
因此,该终端设备可以通过网络设备回复的MAC PDU中承载的至少一个RAPID,确定网络设备待发送的系统信息,进一步的,可以进行系统信息的接收,例如,该终端设备可以根据自身需求进行系统信息的接收,或者也可以接收所有的系统信息,本申请实施例对此不作限定。
在一些可能的实现方式中,所述指示信息通过比特映射方式指示网络设备待发送的系统信息。
在一些可能的实现方式中,所述指示信息承载于所述MAC子PDU的数据部分中。
在一些可能的实现方式中,所述MAC子PDU的子包头中还包括RAPID,用于指示所述至少一个RAR对应的随机接入前导码。
第二方面,提供了一种获取系统信息的方法,包括:网络设备接收第一终端设备发送的第一随机接入前导码,所述第一随机接入前导码用于请求获取系统信息;所述网络设备回复媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括至少一个随机接入响应RAR,所述至少一个RAR用于确定所述网络设备待发送的系统信息。
因此,网络设备可以接收终端设备用于请求获取系统信息的随机接入前导码,进一步的,可以向终端设备回复MAC PDU,该MAC PDU可以包括至少一个RAR,从而终端设备可以根据该至少一个RAR,确定网络设备待发送的系统信息,进一步的,可以进行系统信息的接收
在一些可能的实现方式中,所述至少一个RAR中包括指示信息,所述指示信息用于指示所述网络设备待发送的系统信息。
在一些可能的实现方式中,所述指示信息为至少一个RAPID,其中,所述至少一个RAPID中的每个RAPID用于指示至少一个系统信息。
在一些可能的实现方式中,所述MAC PDU包括至少一个MAC子PDU,所述至少一个MAC子PDU与所述至少一个RAR对应,所述每个RAPID承载于所述每个RAR对应的MAC子PDU的子包头中,且所述MAC子PDU不包括数据部分。
在一些可能的实现方式中,所述指示信息通过比特映射方式指示网络设备待发送的系统信息。
在一些可能的实现方式中,所述指示信息承载于所述MAC子PDU的数据部分中。
在一些可能的实现方式中,所述MAC子PDU的子包头中还包括RAPID,用于指示所述至少一个RAR对应的随机接入前导码。
在一些可能的实现方式中,所述方法还包括:所述网络设备根据特定的随机接入无线网络临时标识RA-RNTI,编码所述MAC PDU。
在一些可能的实现方式中,所述网络设备接收第一终端设备发送的第一随机接入前导码,包括:所述网络设备接收所述第一终端设备在特定周期内发送的第一随机接入前导码。
在一些可能的实现方式中,所述方法还包括:
所述网络设备接收第二终端设备在所述特定周期内发送的第二随机接入前导码,所述第二随机接入前导码用于请求获取系统信息,所述至少一个RAR包括所述网络设备对所述第二终端设备发送的所述第二随机接入前导码的响应。
在一些可能的实现方式中,所述特定周期是由所述网络设备配置的,或者根据系统信息的更新周期确定的。
第三方面,提供了一种终端设备,用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地,该终端设备包括用于执行上述第一方面或第一方面的任一可能的实现方式中的方法的单元。
第四方面,提供了一种终端设备,该终端设备包括:存储器、处理器、输入接口和输出接口。其中,存储器、处理器、输入接口和输出接口通过总线系统相连。该存储器用于存储指令,该处理器用于执行该存储器存储的指令,用于执行上述第一方面或第一方面的任一可能的实现方式中的方法。
第五方面,提供了一种网络设备,用于执行上述第二方面或第二方面的任意可能的实现方式中的方法。具体地,该网络设备包括用于执行上述第二方面或第二方面的任一可能的实现方式中的方法的单元。
第六方面,提供了一种网络设备,该网络设备包括:存储器、处理器、输入接口和输出接口。其中,存储器、处理器、输入接口和输出接口通过总线系统相连。该存储器用于存储指令,该处理器用于执行该存储器存储的指令,用于执行上述第二方面或第二方面的任一可能的实现方式中的方法。
第七方面,提供了一种计算机存储介质,用于储存为执行上述第一方面或第一方面的任意可能的实现方式中的方法所用的计算机软件指令,其包含用于执行上述方面所设计的程序。
第八方面,提供了一种包括指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述第一方面或第一方面的任一可选的实现方式中的方法。
第九方面,提供了一种计算机存储介质,用于储存为执行上述第二方面或第二方面的任意可能的实现方式中的方法所用的计算机软件指令,其包含用于执行上述方面所设计的程序。
第十方面,提供了一种包括指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述第二方面或第二方面的任一可选的实现方式中的方法。
附图说明
图1示出了本申请实施例一个应用场景的示意图。
图2示出了本申请实施例的获取系统信息的方法的示意性流程图。
图3示出了根据本申请实施例的指示信息的一例示意图。
图4示出了根据本申请实施例的指示信息的另一例示意图。
图5示出了本申请另一实施例的获取系统信息的方法的示意性流程图。
图6示出了本申请实施例的终端设备的示意性框图。
图7示出了本申请另一实施例的网络设备的示意性框图。
图8示出了本申请实施例的终端设备的示意性框图。
图9示出了本申请另一实施例的网络设备的示意性框图。
具体实施方式
下面将结合附图,对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,简称为“GSM”)系统、码分多址(Code Division Multiple Access,简称为“CDMA”)系统、宽带码分多址(Wideband Code Division Multiple Access,简称为“WCDMA”)系统、通用分组无线业务(General Packet Radio Service,简称为“GPRS”)、长期演进(Long Term Evolution,简称为“LTE”)系统、LTE频分双工(Frequency Division Duplex,简称为“FDD”)系统、LTE时分双工(Time Division Duplex,简称为“TDD”)、通用移动通信系统(Universal Mobile Telecommunication System,简称为“UMTS”)、全球互联微波接入(Worldwide Interoperability for Microwave Access,简称为“WiMAX”)通信系统或未来的5G系统等。
图1示出了本申请实施例应用的无线通信系统100。该无线通信系统100可以包括网络设备110。网络设备100可以是与终端设备通信的设备。网络设备100可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端设备(例如UE)进行通信。可选地,该网络设备100可以是GSM系统或CDMA系统中的基站(Base Transceiver Station,BTS),也可以是WCDMA系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(Evolutional Node B,eNB或eNodeB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备、未来5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备等。
该无线通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。终端设备120可以是移动的或固定的。可选地,终端设备120可以指接入终端、用户设备(User Equipment,UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、未来5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
图2是根据本申请实施例的获取系统信息的方法的示意性流程图,如图2所示,该方法200可以包括:
S210,终端设备向网络设备发送第一随机接入前导码;
S220,所述终端设备接收所述网络设备发送的媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括至少一个随机接入响应RAR;
S230,所述终端设备根据所述至少一个RAR,确定所述网络设备待发送的系统信息。
可选地,在一些实施例中,该第一随机接入前导码(Random Access Preamble)可以用于通知网络设备该终端设备发起的此次随机接入是用于请求获取系统信息的,或者说,该第一随机接入前导码可以用于指示该终端设备想要通过随机接入获取系统信息。
因此,终端设备可以通过随机接入过程向网络设备发送用于请求获取系统信息的随机接入前导码,进一步的,该网络设备可以向终端设备回复媒体接入控制(Media Access Control,MAC)协议数据单元(Protocol Data Unit,PDU),该MAC PDU中包括至少一个RAR,从而终端设备可以根据该至少一个RAR确定网络设备待发送的系统信息,进一步终端设备可以进行系统信息的接收,例如,终端设备可以根据自身的需求进行系统信息的接收。
可选地,该网络设备待发送的系统信息可以包括网络待广播的系统信息和/或网络设备通过高层信令(例如无线资源控制(Radio Resource Control,RRC)信令)发送的系统信息,本申请实施例并不特别限定网络设备发送系统信息的具体方式。
可选地,在一些实施例中,该第一随机接入前导码可以为用于请求获取系统信息的特定的前导码(Preamble),若网络设备接收到的该第一随机接入前导码为特定的Preamble,则可以确定终端设备发起的此次随机接入是用于请求获取系统信息的,其中,该特定的Preamble可以包括一个或多个,本申请实施例对此不作限定。
可选地,在一些实施例中,该终端设备发送的该第一随机接入前导码可以用于指示该终端设备请求获取的目标系统信息,从而,网络设备可以根据终端设备发送的第一随机接入前导码即可确定该终端设备想要获取的目标系统信息,进而可以进行系统信息的接收。
可选地,在一些实施例中,随机接入前导码可以用于指示一个或一组系统信息,或者说,随机接入前导码与系统信息可以具有对应关系,因此,通过不同的随机接入前导码可以指示不同的系统信息。
可选地,在一些实施例中,该终端设备发送该第一随机接入前导码所用的资源(即物理随机接入信道(Physical Random Access Channel,PRACH)资源)可以用于指示该终端设备请求获取的系统信息,从而,网络设备可以根据终端设备发送该第一随机接入前导码所采用的PRACH资源确定该终端设备想要获取的目标系统信息。
例如,终端设备发送随机接入前导码所使用的PRACH资源可以用于指示一个或一组系统信息, 或者说,发送随机接入前导码的PRACH资源与系统信息可以具有对应关系,因此,通过不同的PRACH资源可以指示对应的系统信息。
可选地,在一些实施例中,终端设备发送用于请求获取系统信息的随机接入前导码所使用的PRACH资源也可以是特定的PRACH资源,因此,网络设备可以通过该PRACH资源确定终端设备发起的此次随机接入是用于请求获取系统信息的。
可选地,在一些实施例中,该S210可以包括:
该终端设备在特定周期内向该网络设备发送该第一随机接入前导码。
可选地,在本申请实施例中,对于终端设备在该特定周期内发起的随机接入,该网络设备可以认为是用于请求获取系统信息的随机接入,或者说,网络设备可以根据终端设备发送随机接入前导码的时间确定此次随机接入是否用于请求获取系统信息,若随机接入前导码的发送时间在该特定周期内,该网络设备可以认为是用于请求获取系统信息,否则,可以认为是正常的随机接入过程。
在该特定周期内,网络设备可以接收至少一个终端设备发送的随机接入前导码,或者说,在该特定周期内,该网络设备可以收集至少一个终端设备发送的随机接入前导码,进一步地,在该特定周期后,该网络设备可以回复随机接入响应(Random Access Response,RAR),该RAR可以包括对该至少一个终端设备发送的随机接入前导码的响应,也就是说,网络设备可以将针对至少一个终端设备的随机接入前导码的响应封装在一个RAR中发送,即通过一个RAR发送针对至少一个终端设备的随机接入前导码的响应,因此,能够降低信令开销。
可选地,在本申请实施例中,该特定周期是由该网络设备配置的,或者根据系统信息的更新周期(modification period)确定的,或者通信系统规定的,或预设在该终端设备上的等,本申请实施例对此不作限定。
可选地,该特定周期可以为系统信息的更新周期之后的一段时间,或者,系统信息的更新周期之前的一段时间,或者也可以为该系统信息的更新周期中的一段时间等,本申请实施例对此不作限定。
因此,该网络设备可以根据终端设备发送的随机接入前导码、或发送随机接入前导码所使用的资源或发送随机接入前导码的时间中的至少一项,确定该终端设备发起的随机接入是用于请求获取系统的。也就是说,终端设备发送的随机接入前导码、或发送随机接入前导码所使用的资源或发送随机接入前导码的时间中的至少一项,都可以用于指示该终端设备发起的随机接入是用于请求获取系统信息的。
例如,该网络设备可以在该终端设备发送的该随机接入前导码为特定的Preamble,或发送该随机接入前导码的时间落入该特定周期内时,确定该终端设备发起的随机接入是用于请求获取系统信息的。
在S210之后,进一步地,终端设备可以侦听PDCCH,获取网络设备回复的RAR。
可选地,物理下行控制信道(Physical Downlink Control Channel,PDCCH)所在的时频资源位置可以是通过控制资源集(Control Resource Set,CORSET)信息来指示的,因此,终端设备可以在CORSET所指示的资源上侦听PDCCH,获取网络设备回复的RAR。
可选地,在一些实施例中,该终端设备接收网络设备回复的MAC PDU可以是在特定周期之后,也就是说,该网络设备回复的MAC PDU可以包括对特定周期内的至少一个终端设备发送的随机接入前导码的响应。
可选地,由于该网络设备回复的MAC PDU可以包括对该特定周期内的至少一个终端设备的随机接入前导码的响应,为便于不同的终端设备解码该MAC PDU,该网络设备可以使用特定的标识(例如,随机接入无线网络临时标识(Random Access Radio Network Temporary Identifier,RA-RNTI))编码该MAC PDU,从而,接收到该MAC PDU的终端设备也可以使用该特定的标识,例如,特定的RA-RNTI解码该MAC PDU,获取该MAC PDU中包括的RAR。
可选地,在本申请实施例中,用于解码该MAC PDU的该特定的RA-RNTI是预留RA-RNTI,该预留RA-RNTI可以是由该网络设备配置的,或者由通信系统规定的,本申请实施例对此不作限定。或者该特定的RA-RNTI也可以为其他RA-RNTI,只要不影响该RA-RNTI的已有功能即可。
应理解,该特定的RA-RNTI可以与用于随机接入的其他RA-RNTI的取值不同,或者说,该特定的RA-RNTI的取值不包括在其他RA-RNTI的取值范围内,即该特定的RA-RNTI不用于正常的随机接入过程。
可选地,该特定的RA-RNTI是由该网络设备通过系统信息(例如,SIB1,或SIB2)或无线资源控制(Radio Resource Control,RRC)信令配置的,或者也可以是通过其他信令,例如物理层信令配置的,本申请实施例对此不作限定。
终端设备解码该MAC PDU后,进一步地,可以根据该MAC PDU包括的至少一个RAR确定网络设备待发送的系统信息。
可选地,在一些实施例中,该至少一个RAR中可以包括指示信息,用于指示网络设备待发送的系统信息,可选地,该指示信息可以为显式或隐式的指示信息,例如,该指示信息可以指示该网络设备待发送的系统信息的标识或索引,本申请实施例对于该指示信息的指示方式不作具体限定。
以下,结合具体实施例,说明该指示信息的指示方式。
实施例1:该指示信息为至少一个随机接入前导码标识RAPID,其中,该至少一个RAPID中的每个RAPID用于指示至少一个系统信息。
在该实施例1中,每个RAR中可以包括一个随机接入前导码标识(Random Access Preamble Identifier,RAPID),每个RAR包括的该RAPID可以用于指示网络设备待发送的一个或多个系统信息。
可选地,在该实施例1中,该MAC PDU可以包括至少一个MAC子(sub)PDU,该至少一个MAC subPDU与该至少一个RAR对应,该每个RAR包括的RAPID承载于该每个RAR对应的MAC subPDU的子包头中,且该MAC subPDU不包括数据部分。
应理解,在本申请实施例中,一个MAC subPDU与一个RAR对应可以理解为该MAC subPDU为该RAR本身,或者也可以理解为,一个RAR承载于一个MAC subPDU中。
可选地,在该实施例中,每个RAR对应的MAC subPDU可以只包括subheader,不包括数据(payload)部分,此情况下,每个RAR包括的RAPID可以承载于MAC subPDU的subheader中;或者每个RAR对应的MAC subPDU也可以包括subheader和payload部分,此情况下,该RAPID可以承载于MAC subPDU的subheader中,也可以承载于MAC subPDU的payload中,本申请实施例对此不作限定。
可选地,在本申请实施例中,该MAC PDU还可以包括退避时间(backoff Indicator,BI)指示域,通常来说,该BI指示域位于该MAC PDU的第一个MAC subPDU中。
结合图3,说明该实施例1,在图3所示的实施例中,该MAC PDU可以包括n个RAR,记为RAR1~RARn,分别对应MAC子PDU 1~MAC子PDU n,每个MAC子PDU都可以包括subheader部分,每个RAR包括的RAPID可以承载于对应的MAC子PDU的subheader中,例如,对于RAR1包括的RAPID1可以承载于MAC subPDU1的subheader中,RARn包括的RAPIDn可以承载于MAC subPDUn的subheader中等。从而,终端设备可以根据每个MAC subPDU中包括的RAPID确定网络设备待发送的系统信息。
应理解,在图3中,MAC subPDU子包头中的各个字段含义如下:
E:扩展字段,用于指示MAC头中是否还有其他的域。
T:类型字段,用于指示MAC子包头中包含的是RAPID还是BI。
R:预留比特,可以设置为“0”。
BI:回退时间指示字段,用于指示终端设备重新发起随机接入的最大等待时间。
RAPID:用于指示已发送的随机接入前导码。
可选地,该图3所示的示例中,该MAC PDU还可以包括MAC subPDU 0,位于该MAC PDU的第一个MAC subPDU,用于承载BI指示域。
可选地,在图3所示的示例中,该MAC PDU还可以包括填充比特,例如,零比特或预留比特等。
因此,该终端设备可以通过网络设备回复的MAC PDU中承载的至少一个RAPID,确定网络设备待发送的系统信息,可选地,该网络设备待发送的系统信息可以为网络设备根据至少一个终端设备的请求确定的,例如,该待发送的系统信息可以是根据特定周期内至少一个终端设备发送的随机接入前导码确定的,可选地,该待发送的系统信息可以包括该特定周期内该至少一个终端设备请求获取的 系统信息中的部分或全部,或者也可以包括其他SI,本申请实施例对此不作限定。
该终端设备确定网络设备后续会广播哪些系统信息后,进一步地,可以进行系统信息的接收吗,例如,终端设备可以根据自身的需求进行系统信息的接收,本申请实施例对于该终端设备接收哪些系统信息不作具体限定。
可选地,该终端设备可以只接收其请求获取的系统信息,或者也可以同时接收其请求获取的系统信息之外的其他系统信息,例如,该终端设备请求获取SIB3,该网络设备后续会广播SIB3和SIB4,则,该终端设备可以只接收SIB1,或者若该终端设备根据自身需求接收SIB3和SIB4。
实施例2:该指示信息通过比特映射方式指示网络设备待发送的系统信息。
即,网络设备可以通过比特映射(bitmap)方式直接指示待发送的系统信息。
可选地,在该实施例2中,MAC PDU可以只包括一个RAR,此情况下,该RAR包括的指示信息可以承载于一个MAC subPDU中(记为情况1)。例如,MAC PDU包括一个RAR,该RAR可以对应MAC subPDU1,则该RAR包括的指示信息可以承载于MAC subPDU1中,该指示信息可以通过bitmap方式指示多个系统信息(例如,SIB3~SIB6)后续是否会广播。
或者,该MAC PDU也可以包括多个RAR,此情况下,该MAC PDU可以包括多个MAC subPDU,分别对应该多个RAR,每个RAR对应的MAC subPDU都可以包括一个指示信息,用于指示网络设备待发送的系统信息(记为情况2),此情况下,可选地,每个MAC subPDU包括的指示信息所指示的内容可以相同,或者也可以不同,本申请实施例对此不作限定。
例如,该MAC PDU包括n个RAR,该n个RAR分别对应MAC subPDU1~MAC subPDUn,其中,n为大于1的正整数,此情况下,MAC subPDU1~MAC subPDUn中的任一MAC subPDU都可以包括指示信息,该多个MAC subPDU所包括的指示信息所指示的内容可以相同,例如,该MAC subPDU1~MAC subPDUn中包括的指示信息都可以通过bitmap方式指示多个系统信息(例如,SIB3~SIB6)后续是否会广播。或者,每个MAC subPDU所包括的指示信息所指示的内容也可以不同,可选地,每个MAC subPDU所包括的指示信息可以用于指示对应的一组SSB后续是否会广播,例如,MAC subPDU1所包括的指示信息可以用于指示SIB3~SIB5后续是否会广播,MAC subPDU2所包括的指示信息可以用于指示SIB6~SIB7后续是否会广播,MAC subPDU3所包括的指示信息可以用于指示SIB8~SIB10后续是否会广播等。
可选地,每个MAC subPDU所包括的指示信息用于指示哪些SSB后续是否会广播可以是由网络设备配置的,或者通信系统规定的等,本申请实施例对此不作限定。
可选地,在本申请实施例中,该RAR包括的指示信息可以承载于该MAC subPDU的subheader或payload中,本申请实施例对此不作具体限定。
可选地,在该实施例2中,该MAC PDU也可以包括退避时间(backoff Indicator,BI)指示域, 通常来说,该BI指示域位于该MAC PDU的第一个MAC subPDU中。
以下,结合图4,说明该实施例2。应理解,图4是以情况1作为示例的,对于情况2,可以采用类似的方式进行指示,这里不再赘述。
在图4所示的示例中,MAC PDU包括一个RAR,对应MAC subPDU1,该MAC subPDU1中可以包括指示信息,可选地,该指示信息可以承载于MAC subPDU1的payload部分(即MAC RAR),用于指示多个系统信息中哪些系统信息会广播。
例如,该指示信息可以用于指示SI1~SI6中哪些系统信息后续会广播(对应示例1),作为示例而非限定,SI对应的比特位为1时可以用于指示该SI为待发送的系统信息,或者也可以是该SI对应的比特位为0时用于指示该SI为待发送的系统信息。
再例如,该指示信息可以用于指示SIB3~SIB7中哪些系统信息后续会广播(对应示例2),作为示例而非限定,SIB对应的比特位为1时可以用于指示该SIB为待发送的系统信息,或者也可以是该SIB对应的比特位为0时用于指示该SIB为待发送的系统信息。
可选地,该图4所示的示例中,还可以包括MAC subPDU 0为该MAC PDU的第一个MAC subPDU,用于承载BI。
可选地,在图4所示的示例中,该MAC PDU还可以包括填充比特,例如,零比特或预留比特等。
上文结合图2至图4,从终端设备的角度详细描述了根据本申请实施例的获取系统信息的方法,下文结合图5,从网络设备的角度详细描述根据本申请另一实施例的获取系统信息的方法。应理解,网络设备侧的描述与终端设备侧的描述相互对应,相似的描述可以参见上文,为避免重复,此处不再赘述。
图5是根据本申请另一实施例的获取系统信息的方法500的示意性流程图,该方法500可以由图1所示的车联网系统中的网络设备执行,如图5所示,该方法500包括如下内容:
S510,网络设备接收第一终端设备发送的第一随机接入前导码,所述第一随机接入前导码用于请求获取系统信息;
S520,所述网络设备回复媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括至少一个随机接入响应RAR,所述至少一个RAR用于确定所述网络设备待发送的系统信息。
可选地,在一些实施例中,该至少一个RAR中包括指示信息,该指示信息用于指示该网络设备待发送的系统信息。
可选地,在一些实施例中,该指示信息为至少一个RAPID,其中,该至少一个RAPID中的每个RAPID用于指示至少一个系统信息。
可选地,在一些实施例中,该MAC PDU包括至少一个MAC子PDU,该至少一个MAC子PDU与该至少一个RAR对应,该每个RAPID承载于该每个RAR对应的MAC子PDU的子包头中,且该 MAC子PDU不包括数据部分。
可选地,在一些实施例中,该指示信息通过比特映射方式指示网络设备待发送的系统信息。
可选地,在一些实施例中,该指示信息承载于该MAC子PDU的数据部分中。
可选地,在一些实施例中,该MAC子PDU的子包头中还包括RAPID,用于指示该至少一个RAR对应的随机接入前导码。
可选地,在一些实施例中,该方法500还包括:
该网络设备根据特定的随机接入无线网络临时标识RA-RNTI,编码该MAC PDU。
可选地,在一些实施例中,该网络设备接收第一终端设备发送的第一随机接入前导码,包括:
该网络设备接收该第一终端设备在特定周期内发送的第一随机接入前导码。
可选地,在一些实施例中,该方法500还包括:
该网络设备接收第二终端设备在该特定周期内发送的第二随机接入前导码,该第二随机接入前导码用于请求获取系统信息,该至少一个RAR包括该网络设备对该第二终端设备发送的该第二随机接入前导码的响应。
可选地,在一些实施例中,该特定周期是由该网络设备配置的,或者根据系统信息的更新周期确定的。
上文结合图2至图5,详细描述了本申请的方法实施例,下文结合图6至图9,详细描述本申请的装置实施例,应理解,装置实施例与方法实施例相互对应,类似的描述可以参照方法实施例。
图6示出了根据本申请实施例的终端设备600的示意性框图。如图6所示,该终端设备600包括:
通信模块610,用于向网络设备发送第一随机接入前导码,以及接收该网络设备发送的媒体接入控制MAC协议数据单元PDU,该MAC PDU包括至少一个随机接入响应RAR;
确定模块620,用于根据该至少一个RAR,确定该网络设备待发送的系统信息。
可选地,在一些实施例中,该终端设备600还包括:
解码模块,用于根据特定的随机接入无线网络临时标识RA-RNTI,解码该MAC PDU。
可选地,在一些实施例中,该特定的RA-RNTI是由该网络设备配置的预留RA-RNTI。
可选地,在一些实施例中,该特定的RA-RNTI是由该网络设备通过系统信息或无线资源控制RRC信令配置的。
可选地,在一些实施例中,该至少一个RAR中包括指示信息,该指示信息用于指示该网络设备待发送的系统信息。
可选地,在一些实施例中,该确定模块620具体用于:
根据该至少一个RAR中包括的该指示信息,确定该网络设备待发送的系统信息。
可选地,在一些实施例中,该指示信息为至少一个随机接入前导码标识RAPID,其中,该至少 一个RAPID中的每个RAPID用于指示至少一个系统信息。
可选地,在一些实施例中,该MAC PDU包括至少一个MAC子PDU,该至少一个MAC子PDU与该至少一个RAR对应,该每个RAPID承载于该每个RAR对应的MAC子PDU的子包头中,且该MAC子PDU不包括数据部分。
可选地,在一些实施例中,该指示信息通过比特映射方式指示网络设备待发送的系统信息。
可选地,在一些实施例中,该指示信息承载于该MAC子PDU的数据部分中。
可选地,在一些实施例中,该MAC子PDU的子包头中还包括RAPID,用于指示该至少一个RAR对应的随机接入前导码。
可选地,在一些实施例中,该通信模块610还用于:
在特定周期内向该网络设备发送该第一随机接入前导码。
可选地,在一些实施例中,该特定周期是由该网络设备配置的,或者根据系统信息的更新周期确定的。
可选地,在一些实施例中,该第一随机接入前导码用于指示该终端设备请求获取的系统信息。
应理解,根据本申请实施例的终端设备600可对应于本申请方法实施例中的终端设备,并且终端设备600中的各个单元的上述和其它操作和/或功能分别为了实现图2所示方法200中终端设备的相应流程,为了简洁,在此不再赘述。
图7是根据本申请实施例的网络设备的示意性框图。图7的网络设备700包括:
通信模块710,用于接收第一终端设备发送的第一随机接入前导码,该第一随机接入前导码用于请求获取系统信息;以及回复媒体接入控制MAC协议数据单元PDU,该MAC PDU包括至少一个随机接入响应RAR,该至少一个RAR用于确定该网络设备待发送的系统信息。
可选地,在一些实施例中,该至少一个RAR中包括指示信息,该指示信息用于指示该网络设备待发送的系统信息。
可选地,在一些实施例中,该指示信息为至少一个RAPID,其中,该至少一个RAPID中的每个RAPID用于指示至少一个系统信息。
可选地,在一些实施例中,该MAC PDU包括至少一个MAC子PDU,该至少一个MAC子PDU与该至少一个RAR对应,该每个RAPID承载于该每个RAR对应的MAC子PDU的子包头中,且该MAC子PDU不包括数据部分。
可选地,在一些实施例中,该指示信息通过比特映射方式指示网络设备待发送的系统信息。
可选地,在一些实施例中,该指示信息承载于该MAC子PDU的数据部分中。
可选地,在一些实施例中,该MAC子PDU的子包头中还包括RAPID,用于指示该至少一个RAR对应的随机接入前导码。
可选地,在一些实施例中,该网络设备还包括:
编码模块,用于根据特定的随机接入无线网络临时标识RA-RNTI,编码该MAC PDU。
可选地,在一些实施例中,该通信模块710还用于:
接收该第一终端设备在特定周期内发送的第一随机接入前导码。
可选地,在一些实施例中,该通信模块710具体用于:
接收第二终端设备在该特定周期内发送的第二随机接入前导码,该第二随机接入前导码用于请求获取系统信息,该至少一个RAR包括该网络设备对该第二终端设备发送的该第二随机接入前导码的响应。
可选地,在一些实施例中,该特定周期是由该网络设备配置的,或者根据系统信息的更新周期确定的。
具体地,该网络设备700可以对应(例如,可以配置于或本身即为)上述方法500中描述的网络设备,并且,该网络设备700中的各模块或单元分别用于执行上述方法500中网络设备所执行的各动作或处理过程,这里,为了避免赘述,省略其详细说明。
如图8所示,本申请实施例还提供了一种终端设备800,所述终端设备800可以为图6中的终端设备600,其能够用于执行与图2中方法200对应的终端设备的内容。所述终端设备800包括:输入接口810、输出接口820、处理器830以及存储器840,所述输入接口810、输出接口820、处理器830和存储器840可以通过总线系统相连。所述存储器840用于存储包括程序、指令或代码。所述处理器830,用于执行所述存储器840中的程序、指令或代码,以控制输入接口810接收信号、控制输出接口820发送信号以及完成前述方法实施例中的操作。
应理解,在本申请实施例中,所述处理器830可以是中央处理单元(Central Processing Unit,简称为“CPU”),所述处理器830还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者所述处理器也可以是任何常规的处理器等。
所述存储器840可以包括只读存储器和随机存取存储器,并向处理器830提供指令和数据。存储器840的一部分还可以包括非易失性随机存取存储器。例如,存储器840还可以存储设备类型的信息。
在实现过程中,上述方法的各内容可以通过处理器830中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的内容可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。所述存储介质位于存储器840,处理器830读取存储器840中的信息,结合其硬件完成上述方法的内容。为避免重复,这里不再详细描述。
一个具体的实施方式中,图6中终端设备600包括的确定模块620和解码模块可以用图8的处理器830实现,图6中终端设备600包括的通信模块610可以用图8的所述输入接口810和所述输出接口820实现。
如图9所示,本申请实施例还提供了一种网络设备900,所述网络设备900可以为图7中的网络设备700,其能够用于执行与图5中方法500对应的网络设备的内容。所述网络设备900包括:输入接口910、输出接口920、处理器930以及存储器940,所述输入接口910、输出接口920、处理器930和存储器940可以通过总线系统相连。所述存储器940用于存储包括程序、指令或代码。所述处理器930,用于执行所述存储器940中的程序、指令或代码,以控制输入接口910接收信号、控制输出接口920发送信号以及完成前述方法实施例中的操作。
应理解,在本申请实施例中,所述处理器930可以是中央处理单元(Central Processing Unit,简称为“CPU”),所述处理器930还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者所述处理器也可以是任何常规的处理器等。
所述存储器940可以包括只读存储器和随机存取存储器,并向处理器930提供指令和数据。存储器940的一部分还可以包括非易失性随机存取存储器。例如,存储器940还可以存储设备类型的信息。
在实现过程中,上述方法的各内容可以通过处理器930中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的内容可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。所述存储介质位于存储器940,处理器930读取存储器940中的信息,结合其硬件完成上述方法的内容。为避免重复,这里不再详细描述。
一个具体的实施方式中,图7中网络设备700包括的通信模块710可以用图9的所述输入接口910和所述输出接口920实现,图7中网络设备700包括的编码模块可以用图9的处理器930实现。
本申请实施例还提出了一种计算机可读存储介质,该计算机可读存储介质存储一个或多个程序,该一个或多个程序包括指令,该指令当被包括多个应用程序的便携式电子设备执行时,能够使该便携式电子设备执行图2至图5所示实施例的方法。
本申请实施例还提出了一种计算机程序,该计算机程序包括指令,当该计算机程序被计算机执行时,使得计算机可以执行图2至图5所示实施例的方法的相应流程。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方 法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应所述理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者所述技术方案的部分可以以软件产品的形式体现出来,所述计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应所述以权利要求的保护范围为准。

Claims (50)

  1. 一种获取系统信息的方法,其特征在于,包括:
    终端设备向网络设备发送第一随机接入前导码;
    所述终端设备接收所述网络设备发送的媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括至少一个随机接入响应RAR;
    所述终端设备根据所述至少一个RAR,确定所述网络设备待发送的系统信息。
  2. 根据权利要求1所述的方法,其特征在于,所述方法还包括:
    所述终端设备根据特定的随机接入无线网络临时标识RA-RNTI,解码所述MAC PDU。
  3. 根据权利要求2所述的方法,其特征在于,所述特定的RA-RNTI是由所述网络设备配置的预留RA-RNTI。
  4. 根据权利要求2或3所述的方法,其特征在于,所述特定的RA-RNTI是由所述网络设备通过系统信息或无线资源控制RRC信令配置的。
  5. 根据权利要求1至4中任一项所述的方法,其特征在于,所述至少一个RAR中包括指示信息,所述指示信息用于指示所述网络设备待发送的系统信息。
  6. 根据权利要求5所述的方法,其特征在于,所述终端设备根据所述至少一个RAR,确定所述网络设备待发送的系统信息,包括:
    所述终端设备根据所述至少一个RAR中包括的所述指示信息,确定所述网络设备待发送的系统信息。
  7. 根据权利要求5或6所述的方法,其特征在于,所述指示信息为至少一个随机接入前导码标识RAPID,其中,所述至少一个RAPID中的每个RAPID用于指示至少一个系统信息。
  8. 根据权利要求7所述的方法,其特征在于,所述MAC PDU包括至少一个MAC子PDU,所述至少一个MAC子PDU与所述至少一个RAR对应,所述每个RAPID承载于所述每个RAR对应的MAC子PDU的子包头中,且所述MAC子PDU不包括数据部分。
  9. 根据权利要求5或6所述的方法,其特征在于,所述指示信息通过比特映射方式指示网络设备待发送的系统信息。
  10. 根据权利要求9所述的方法,其特征在于,所述指示信息承载于所述MAC子PDU的数据部分中。
  11. 根据权利要求10所述的方法,其特征在于,所述MAC子PDU的子包头中还包括RAPID,用于指示所述至少一个RAR对应的随机接入前导码。
  12. 根据权利要求1至11中任一项所述的方法,其特征在于,所述终端设备向网络设备发送第一随机接入前导码,包括:
    所述终端设备在特定周期内向所述网络设备发送所述第一随机接入前导码。
  13. 根据权利要求12所述的方法,其特征在于,所述特定周期是由所述网络设备配置的,或者根据系统信息的更新周期确定的。
  14. 根据权利要求1至13中任一项所述的方法,其特征在于,所述第一随机接入前导码用于指示所述终端设备请求获取的系统信息。
  15. 一种获取系统信息的方法,其特征在于,包括:
    网络设备接收第一终端设备发送的第一随机接入前导码,所述第一随机接入前导码用于请求获取系统信息;
    所述网络设备回复媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括至少一个随机接入响应RAR,所述至少一个RAR用于确定所述网络设备待发送的系统信息。
  16. 根据权利要求15所述的方法,其特征在于,所述至少一个RAR中包括指示信息,所述指示信息用于指示所述网络设备待发送的系统信息。
  17. 根据权利要求16所述的方法,其特征在于,所述指示信息为至少一个RAPID,其中,所述至少一个RAPID中的每个RAPID用于指示至少一个系统信息。
  18. 根据权利要求17所述的方法,其特征在于,所述MAC PDU包括至少一个MAC子PDU,所述至少一个MAC子PDU与所述至少一个RAR对应,所述每个RAPID承载于所述每个RAR对应的MAC子PDU的子包头中,且所述MAC子PDU不包括数据部分。
  19. 根据权利要求16所述的方法,其特征在于,所述指示信息通过比特映射方式指示网络设备待发送的系统信息。
  20. 根据权利要求19所述的方法,其特征在于,所述指示信息承载于所述MAC子PDU的数据部分中。
  21. 根据权利要求20所述的方法,其特征在于,所述MAC子PDU的子包头中还包括RAPID,用于指示所述至少一个RAR对应的随机接入前导码。
  22. 根据权利要求15至21中任一项所述的方法,其特征在于,所述方法还包括:
    所述网络设备根据特定的随机接入无线网络临时标识RA-RNTI,编码所述MAC PDU。
  23. 根据权利要求15至22中任一项所述的方法,其特征在于,所述网络设备接收第一终端设备发送的第一随机接入前导码,包括:
    所述网络设备接收所述第一终端设备在特定周期内发送的第一随机接入前导码。
  24. 根据权利要求23所述的方法,其特征在于,所述方法还包括:
    所述网络设备接收第二终端设备在所述特定周期内发送的第二随机接入前导码,所述第二随机接入前导码用于请求获取系统信息,所述至少一个RAR包括所述网络设备对所述第二终端设备发送的 所述第二随机接入前导码的响应。
  25. 根据权利要求23或24所述的方法,其特征在于,所述特定周期是由所述网络设备配置的,或者根据系统信息的更新周期确定的。
  26. 一种终端设备,其特征在于,包括:
    通信模块,用于向网络设备发送第一随机接入前导码,以及接收所述网络设备发送的媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括至少一个随机接入响应RAR;
    确定模块,用于根据所述至少一个RAR,确定所述网络设备待发送的系统信息。
  27. 根据权利要求26所述的终端设备,其特征在于,所述终端设备还包括:
    解码模块,用于根据特定的随机接入无线网络临时标识RA-RNTI,解码所述MAC PDU。
  28. 根据权利要求27所述的终端设备,其特征在于,所述特定的RA-RNTI是由所述网络设备配置的预留RA-RNTI。
  29. 根据权利要求27或28所述的终端设备,其特征在于,所述特定的RA-RNTI是由所述网络设备通过系统信息或无线资源控制RRC信令配置的。
  30. 根据权利要求26至29中任一项所述的终端设备,其特征在于,所述至少一个RAR中包括指示信息,所述指示信息用于指示所述网络设备待发送的系统信息。
  31. 根据权利要求30所述的终端设备,其特征在于,所述确定模块具体用于:
    根据所述至少一个RAR中包括的所述指示信息,确定所述网络设备待发送的系统信息。
  32. 根据权利要求30或31所述的终端设备,其特征在于,所述指示信息为至少一个随机接入前导码标识RAPID,其中,所述至少一个RAPID中的每个RAPID用于指示至少一个系统信息。
  33. 根据权利要求32所述的终端设备,其特征在于,所述MAC PDU包括至少一个MAC子PDU,所述至少一个MAC子PDU与所述至少一个RAR对应,所述每个RAPID承载于所述每个RAR对应的MAC子PDU的子包头中,且所述MAC子PDU不包括数据部分。
  34. 根据权利要求30或31所述的终端设备,其特征在于,所述指示信息通过比特映射方式指示网络设备待发送的系统信息。
  35. 根据权利要求34所述的终端设备,其特征在于,所述指示信息承载于所述MAC子PDU的数据部分中。
  36. 根据权利要求35所述的终端设备,其特征在于,所述MAC子PDU的子包头中还包括RAPID,用于指示所述至少一个RAR对应的随机接入前导码。
  37. 根据权利要求26至36中任一项所述的终端设备,其特征在于,所述通信模块还用于:
    在特定周期内向所述网络设备发送所述第一随机接入前导码。
  38. 根据权利要求37所述的终端设备,其特征在于,所述特定周期是由所述网络设备配置的, 或者根据系统信息的更新周期确定的。
  39. 根据权利要求26至38中任一项所述的终端设备,其特征在于,所述第一随机接入前导码用于指示所述终端设备请求获取的系统信息。
  40. 一种网络设备,其特征在于,包括:
    通信模块,用于接收第一终端设备发送的第一随机接入前导码,所述第一随机接入前导码用于请求获取系统信息;以及
    回复媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括至少一个随机接入响应RAR,所述至少一个RAR用于确定所述网络设备待发送的系统信息。
  41. 根据权利要求40所述的网络设备,其特征在于,所述至少一个RAR中包括指示信息,所述指示信息用于指示所述网络设备待发送的系统信息。
  42. 根据权利要求41所述的网络设备,其特征在于,所述指示信息为至少一个RAPID,其中,所述至少一个RAPID中的每个RAPID用于指示至少一个系统信息。
  43. 根据权利要求42所述的网络设备,其特征在于,所述MAC PDU包括至少一个MAC子PDU,所述至少一个MAC子PDU与所述至少一个RAR对应,所述每个RAPID承载于所述每个RAR对应的MAC子PDU的子包头中,且所述MAC子PDU不包括数据部分。
  44. 根据权利要求41所述的网络设备,其特征在于,所述指示信息通过比特映射方式指示网络设备待发送的系统信息。
  45. 根据权利要求44所述的网络设备,其特征在于,所述指示信息承载于所述MAC子PDU的数据部分中。
  46. 根据权利要求45所述的网络设备,其特征在于,所述MAC子PDU的子包头中还包括RAPID,用于指示所述至少一个RAR对应的随机接入前导码。
  47. 根据权利要求40至46中任一项所述的网络设备,其特征在于,所述网络设备还包括:
    编码模块,用于根据特定的随机接入无线网络临时标识RA-RNTI,编码所述MAC PDU。
  48. 根据权利要求40至47中任一项所述的网络设备,其特征在于,所述通信模块还用于:
    接收所述第一终端设备在特定周期内发送的第一随机接入前导码。
  49. 根据权利要求48所述的网络设备,其特征在于,所述通信模块具体用于:
    接收第二终端设备在所述特定周期内发送的第二随机接入前导码,所述第二随机接入前导码用于请求获取系统信息,所述至少一个RAR包括所述网络设备对所述第二终端设备发送的所述第二随机接入前导码的响应。
  50. 根据权利要求48或49所述的网络设备,其特征在于,所述特定周期是由所述网络设备配置的,或者根据系统信息的更新周期确定的。
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