WO2021212283A1 - 一种请求系统广播信息的方法及装置、终端设备 - Google Patents

一种请求系统广播信息的方法及装置、终端设备 Download PDF

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Publication number
WO2021212283A1
WO2021212283A1 PCT/CN2020/085703 CN2020085703W WO2021212283A1 WO 2021212283 A1 WO2021212283 A1 WO 2021212283A1 CN 2020085703 W CN2020085703 W CN 2020085703W WO 2021212283 A1 WO2021212283 A1 WO 2021212283A1
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WIPO (PCT)
Prior art keywords
indication information
system broadcast
indicate
request
serving cell
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PCT/CN2020/085703
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English (en)
French (fr)
Inventor
王淑坤
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2020/085703 priority Critical patent/WO2021212283A1/zh
Priority to CN202080098937.0A priority patent/CN115315988A/zh
Publication of WO2021212283A1 publication Critical patent/WO2021212283A1/zh

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    • 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
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of mobile communication technology, and in particular to a method and device for requesting system broadcast information, and terminal equipment.
  • SI System Information
  • the mechanism of sending system broadcast information on demand does not consider the multi-radio access technology-dual connectivity (MR-DC) scenario and the carrier aggregation scenario (Carrier Aggregation, CA). How to work in this scenario The realization of on-demand sending of system broadcast information needs to be clear.
  • MR-DC multi-radio access technology-dual connectivity
  • CA Carrier Aggregation
  • the embodiments of the present application provide a method and device for requesting system broadcast information, and terminal equipment.
  • the terminal device sends a system broadcast request message, where the system broadcast request message carries first indication information, and the first indication information is used to indicate one or more cells that need to request system broadcast information.
  • the apparatus for requesting system broadcast information provided by the embodiment of the present application is applied to terminal equipment, and the apparatus includes:
  • the sending unit is configured to send a system broadcast request message, where the system broadcast request message carries first indication information, and the first indication information is used to indicate one or more cells that need to request system broadcast information.
  • the terminal device provided in the embodiment of the present application includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the above-mentioned method of requesting system broadcast information.
  • the chip provided in the embodiment of the present application is used to implement the above-mentioned method for requesting system broadcast information.
  • the chip includes a processor, which is used to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned method for requesting system broadcast information.
  • the computer-readable storage medium provided by the embodiment of the present application is used to store a computer program that enables the computer to execute the above-mentioned method for requesting system broadcast information.
  • the computer program product provided by the embodiment of the present application includes computer program instructions that cause the computer to execute the above-mentioned method for requesting system broadcast information.
  • the computer program provided by the embodiment of the present application when it runs on a computer, causes the computer to execute the above-mentioned method of requesting system broadcast information.
  • the terminal device requests system broadcast information (ie SI) from the network side, it indicates that the request is required in the system broadcast request message One or more cells in which the system broadcasts information, so that it can be clarified which target cells the terminal device needs to request system broadcast information, thus perfecting the mechanism of sending system broadcast information on demand in the MR-DC scenario or the CA scenario.
  • SI system broadcast information
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a flowchart of sending system broadcast information on demand according to an embodiment of the present application
  • FIG. 3 is a schematic flowchart of a method for requesting system broadcast information according to an embodiment of the application
  • FIG. 4 is a schematic diagram of the structural composition of an apparatus for requesting system broadcast information provided by an embodiment of the application;
  • FIG. 5 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a chip of an embodiment of the present application.
  • Fig. 7 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • 5G communication system or future communication system etc.
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminals located in the coverage area.
  • the network device 110 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or
  • the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network side device in a 5G network, or a network device in a future communication system, etc.
  • the communication system 100 also includes at least one terminal 120 located within the coverage area of the network device 110.
  • the "terminal” used here includes, but is not limited to, connection via a wired line, such as via a public switched telephone network (PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, and direct cable connection; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter; and/or a device of another terminal configured to receive/send communication signals; and/or an Internet of Things (IoT) device.
  • PSTN public switched telephone network
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscribe
  • a terminal set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal can refer to access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user Device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminals 120.
  • the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminals.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminals. This embodiment of the present application There is no restriction on this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal 120 with communication functions, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; communication
  • the device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • 5G Enhanced Mobile Broadband
  • URLLC Ultra-Reliable Low-Latency Communications
  • mMTC Massive Machine-Type Communications
  • eMBB still targets users to obtain multimedia content, services and data, and its demand is growing very rapidly.
  • eMBB may be deployed in different scenarios, such as indoors, urban areas, rural areas, etc., its capabilities and requirements are also quite different, so it cannot be generalized and must be analyzed in detail in conjunction with specific deployment scenarios.
  • Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), traffic safety protection, etc.
  • Typical features of mMTC include: high connection density, small data volume, delay-insensitive services, low-cost modules and long service life.
  • NR In the early deployment of NR, complete NR coverage is difficult to obtain, so the typical network coverage is wide-area LTE coverage and NR island coverage mode. Moreover, a large amount of LTE is deployed below 6GHz, and there is very little spectrum below 6GHz that can be used for 5G. Therefore, NR must study the spectrum application above 6GHz, and the high frequency band has limited coverage and fast signal fading. At the same time, in order to protect mobile operators' early investment in LTE, a tight interworking mode between LTE and NR is proposed.
  • EN-DC LTE-NR Dual Connectivity
  • an LTE base station eNB serves as a master node (Master Node, MN)
  • an NR base station gNB or en-gNB
  • SN secondary node
  • other DC modes will be supported, namely NE-DC, 5GC-EN-DC, and NR DC.
  • the NR base station serves as the MN
  • the eLTE base station serves as the SN to connect to the 5GC core network.
  • the eLTE base station serves as MN, and the NR base station serves as SN to connect to the 5GC core network.
  • the NR base station serves as the MN, and the NR base station serves as the SN to connect to the 5GC core network.
  • the technical solutions of the embodiments of the present application can not only be applied to a dual-connectivity architecture (such as MR-DC architecture), but also can be applied to a multiple connectivity (Multiple Connectivity, MC) architecture.
  • MC Multiple Connectivity
  • the MC architecture may be an MR-MC architecture.
  • CA means that by jointly scheduling and using resources on multiple component carriers (Component Carrier, CC), the NR system can support a larger bandwidth and thus can achieve a higher system peak rate.
  • Component Carrier CC
  • the continuity of the aggregated carriers on the spectrum it can be divided into continuous carrier aggregation and non-continuous carrier aggregation; according to whether the bands of the aggregated carriers are the same, it is divided into intra-band carrier aggregation And inter-band carrier aggregation.
  • CA there is one and only one primary carrier (Primary Cell Component, PCC), and PCC provides RRC signaling connection, non-access stratum (NAS) function, security, etc.
  • the Physical Downlink Control Channel (PUCCH) exists on the PCC and only exists on the PCC.
  • PCC Primary Cell Component
  • SCC Secondary Cell Component
  • SCC secondary Cell Component
  • the PCC and the SCC are both called serving cells, where the cell on the PCC is the primary cell (PCell), and the cell on the SCC is the secondary cell (SCell).
  • the standard stipulates that the aggregated carriers support a maximum of 5, that is, the maximum bandwidth after aggregation is 100MHZ, and the aggregated carriers belong to the same base station.
  • C-RNTI Cell-Radio Network Temporary Identifier
  • the base station ensures that the C-RNTI does not conflict in the cell where each carrier is located. Since both asymmetric carrier aggregation and symmetric carrier aggregation are supported, the carriers required to be aggregated must have downlink carriers, but may not have uplink carriers. Moreover, for the primary carrier cell, there must be a physical downlink control channel (PDCCH) and PUCCH of the cell, and only the primary carrier cell has a PUCCH, and other secondary carrier cells may have a PDCCH.
  • PDCH physical downlink control channel
  • RRC Radio Resource Control
  • RRC_INACTIVE Radio Resource Control
  • RRC_IDLE state (abbreviated as idle state): mobility is cell selection and reselection based on terminal equipment, paging is initiated by the Core Network (CN), and the paging area is configured by the CN. There is no terminal device context on the base station side, and no RRC connection.
  • CN Core Network
  • RRC_CONNECTED state (referred to as connected state for short): there is an RRC connection, and there is a terminal device context on the base station side and the terminal device side.
  • the network side knows that the location of the terminal equipment is of a specific cell level. Mobility is the mobility controlled by the network side. Unicast data can be transmitted between the terminal equipment and the base station.
  • RRC_INACTIVE state (abbreviated as inactive state): mobility is cell selection reselection based on terminal equipment, there is a connection between CN-NR, the context of terminal equipment exists on a certain base station, and paging is triggered by RAN The RAN-based paging area is managed by the RAN, and the network side knows that the location of the terminal equipment is based on the RAN paging area level.
  • SI can include a master information block (Master Information Block, MIB) and at least one system information block (System Information Block, SIB). ), such as SIB1, SIB2, SIB3,..., SIB18, etc.
  • MIB Master Information Block
  • SIB System Information Block
  • SIB1 SIB2, SIB3,..., SIB18, etc.
  • MIB and SIB1 other SIBs may be requested on demand.
  • the base station will issue SI only after receiving the SI request from the terminal device.
  • 201a the base station sends MIB to the terminal device
  • 201b the base station sends SIB1 to the terminal device
  • 202 the terminal device sends a system broadcast request message (ie SystemInformationRequest message) to the base station
  • 203 the base station sends a system information message to the terminal device ( That is SystemInformation message).
  • the SIB1 carries the indication information whether each SI is being broadcasted, and the terminal device can learn which SIBs need to make an SI request by reading the SIB1.
  • the way of the SI request includes an MSG1-based SI request (MSG1-based SI request) and an MSG3-based SI request (MSG3-based SI request).
  • the MSG1-based SI request is implemented based on a reserved preamble (Preamble) and/or random access channel resource (RACH resource), where RACH resource refers to RACH opportunity (RACH Occasion, RO) resources.
  • Preamble preamble
  • RACH resource random access channel resource
  • RACH resource refers to RACH opportunity (RACH Occasion, RO) resources.
  • RRCSystemInfoRequest RRCSystemInfoRequest
  • the terminal device learns whether to use the MSG1-based SI request or the MSG3-based SI request by reading the system information (ie SIB1). If the base station provides the configuration information (ie si-Request-Config) requested by the SI in the system information (ie SIB1), the terminal device uses the MSG1-based SI request, otherwise, the MSG3-based SI request is used.
  • the base station provides the configuration information (ie si-Request-Config) requested by the SI in the system information (ie SIB1)
  • the terminal device uses the MSG1-based SI request, otherwise, the MSG3-based SI request is used.
  • the terminal device After receiving the SI request confirmation from the base station, the terminal device receives the SI in the current modification period, and the terminal device receives the SI until the end of the modification period or until the SI is received. If a random access failure occurs during the SI request process, then the behavior of the terminal device depends on its own implementation.
  • R15 does not support connected terminal devices to request system broadcast information.
  • R16 connected terminal devices request system broadcast information.
  • dedicated signaling i.e. DedicatedSIBRequest message
  • SIB is used as the granularity (i.e. per SIB) to request system broadcast. information.
  • the mechanism of sending system broadcast information on demand does not consider MR-DC or CA scenarios. Because there are multiple cell distributions in MR-DC or CA scenarios, for example, in the MR-DC scenario, there is a master cell group (Master cell group) on the MN side. Cell Group, MCG). Further, the MCG includes one PCell and one or more SCells. There is a Secondary Cell Group (SCG) on the SN side. Further, the SCG includes one primary and secondary cell (PSCell), and optionally, one or more SCells. For another example, in a CA scenario, there is one PCell and one or more SCells. How the connected terminal device requests the system broadcast information of PSCells and SCells needs to be clarified. For this reason, the following technical solutions of the embodiments of the present application are proposed.
  • system broadcast request message in the embodiment of the present application may also be referred to as “system information request message” or “SI request message”.
  • system broadcast information in the embodiment of the present application may also be referred to as “system information (ie SI)” or “system information block (ie SIB)”.
  • the technical solutions of the embodiments of the present application can be applied to an MR-DC scenario or a CA scenario.
  • the MCG on the MN side.
  • the MCG includes one PCell and one or more SCells.
  • the SCG on the SN side.
  • the SCG includes a primary and secondary cell (PSCell), and optionally, one or more SCells.
  • PSCell primary and secondary cell
  • SCell secondary cell
  • FIG. 3 is a schematic flowchart of a method for requesting system broadcast information according to an embodiment of the application. As shown in FIG. 3, the method for requesting system broadcast information includes the following steps:
  • Step 301 The terminal device sends a system broadcast request message, where the system broadcast request message carries first indication information, and the first indication information is used to indicate one or more cells that need to request system broadcast information.
  • the terminal device is a terminal device in a connected state.
  • the terminal device may also be a terminal device in another RRC state.
  • the system broadcast request message is a dedicated SIB request (DedicatedSIBRequest) message.
  • the terminal device may send the system broadcast request message in the following manner.
  • Method 1 The terminal device sends a system broadcast request message to the PCell.
  • the PCell is the primary cell on the MN side.
  • the PCell is the primary cell in the aggregated multiple carriers.
  • the system broadcast request message carries first indication information, and the first indication information is used to indicate one or more cells that need to request system broadcast information.
  • the one or more cells include at least one of the following: PSCell, at least one SCell on the MN side, and at least one SCell on the SN side.
  • the one or more cells include one or more SCells in aggregated carriers.
  • the first indication information includes one or more serving cell indexes; each serving cell index in the one or more serving cell indexes is used to indicate a need The cell that requests the system to broadcast information.
  • the first indication information includes a first bitmap, and each bit in the first bitmap corresponds to a serving cell (or corresponds to a serving cell index), and the value of the bit is Setting to the first value indicates that the serving cell corresponding to the bit needs to request system broadcast information.
  • the first value is, for example, 1. Based on this, the value of a certain bit in the first bitmap is set to 1, which means that the serving cell corresponding to the bit needs to request system broadcast information. In addition, if the value of a certain bit in the first bitmap is set to 0 (that is, the second value), it means that the serving cell corresponding to the bit does not need to request system broadcast information.
  • system broadcast request message further carries second indication information, and the second indication information is used to indicate the SIB type that each cell of the one or more cells needs to request.
  • the network side (such as the base station) can determine which cells (that is, which serving cells) need to request system broadcast information through the received first indication information. Further, the network side (such as the base station) can determine which SIBs of each of these cells are requested by the terminal device through the received second indication information.
  • the second indication information includes a second bitmap, each bit in the second bitmap corresponds to a SIB type, and the value of the bit is used to indicate the bit Whether the corresponding SIB type needs to be requested.
  • the value of the bit is 1 which means that the SIB type corresponding to the bit needs to be requested, and the value of the bit is 0 which means that the SIB type corresponding to the value of the bit does not need to be requested.
  • the first indication information is used to indicate one of the following: PCell, PSCell, PCell, and PSCell (ie both); where,
  • the first indication information indicates the PCell
  • the first indication information is used to indicate that the cell that needs to request system broadcast information is the PCell
  • the first indication information indicates the PSCell
  • the first indication information is used to indicate that the cell that needs to request system broadcast information is the PSCell
  • the first indication information indicates the PCell and the PSCell
  • the first indication information is used to indicate that the cells that need to request system broadcast information are the PCell and the PSCell.
  • system broadcast request message further carries second indication information, and the second indication information is used to indicate that each of the one or more cells indicated by the first indication information needs to request SIB type.
  • the network side (such as the base station) can determine which cells (that is, which serving cells) need to request system broadcast information through the received first indication information. Further, the network side (such as the base station) can determine which SIBs of each of these cells are requested by the terminal device through the received second indication information.
  • the second indication information includes a second bitmap, each bit in the second bitmap corresponds to a SIB type, and the value of the bit is used to indicate the bit Whether the corresponding SIB type needs to be requested.
  • the value of the bit is 1 which means that the SIB type corresponding to the bit needs to be requested, and the value of the bit is 0 which means that the SIB type corresponding to the value of the bit does not need to be requested.
  • the first indication information is used to indicate one of the following: MCG, SCG, MCG, and SCG (ie both); wherein,
  • the first indication information indicates the MCG
  • the first indication information is used to indicate that the cells that need to request system broadcast information are all serving cells on the MCG side; or,
  • the first indication information indicates the SCG
  • the first indication information is used to indicate that the cells that need to request system broadcast information are all serving cells on the SCG side; or,
  • the first indication information indicates MCG and SCG
  • the first indication information is used to indicate that the cells that need to request system broadcast information are all serving cells on the MCG side and all serving cells on the SCG side.
  • system broadcast request message further carries second indication information, and the second indication information is used to indicate that each of the one or more cells indicated by the first indication information needs to request SIB type.
  • the network side (such as the base station) can determine which cells (that is, which serving cells) need to request system broadcast information through the received first indication information. Further, the network side (such as the base station) can determine which SIBs of each of these cells are requested by the terminal device through the received second indication information.
  • the second indication information includes a second bitmap, each bit in the second bitmap corresponds to a SIB type, and the value of the bit is used to indicate the bit Whether the corresponding SIB type needs to be requested.
  • the value of the bit is 1 which means that the SIB type corresponding to the bit needs to be requested, and the value of the bit is 0 which means that the SIB type corresponding to the value of the bit does not need to be requested.
  • the first indication information is used to indicate that the cell that needs to request system broadcast information is one or more serving cells on the MCG side; and/or, the first indication information is used to indicate the need The cell requesting system broadcast information is one or more serving cells on the SCG side.
  • the first indication information includes MCG indication information and one or more first serving cell indexes, and each first serving cell index in the one or more first serving cell indexes is used to indicate a request The serving cell on the MCG side of the system broadcasting information; and/or, the first indication information includes SCG indication information and one or more second serving cell indexes, each of the one or more second serving cell indexes The second serving cell index is used to indicate a serving cell on the SCG side that needs to request system broadcast information.
  • system broadcast request message further carries second indication information, and the second indication information is used to indicate that each of the one or more cells indicated by the first indication information needs to request SIB type.
  • the network side (such as the base station) can determine which cells (that is, which serving cells) need to request system broadcast information through the received first indication information. Further, the network side (such as the base station) can determine which SIBs of each of these cells are requested by the terminal device through the received second indication information.
  • the second indication information includes a second bitmap, each bit in the second bitmap corresponds to a SIB type, and the value of the bit is used to indicate the bit Whether the corresponding SIB type needs to be requested.
  • the value of the bit is 1 which means that the SIB type corresponding to the bit needs to be requested, and the value of the bit is 0 which means that the SIB type corresponding to the value of the bit does not need to be requested.
  • Method 2 The terminal device sends a system broadcast request message to the PSCell.
  • the PSCell is the primary cell on the SN side.
  • the terminal device sends a system broadcast request message to the PSCell through SRB3.
  • SRB3 refers to the interactive signaling between the terminal equipment and the SN.
  • the system broadcast request message carries first indication information, and the first indication information is used to indicate one or more cells that need to request system broadcast information.
  • the one or more cells include at least one of the following: a PSCell and at least one SCell on the SN side.
  • the first indication information includes one or more second serving cell indexes; each of the one or more second serving cell indexes is used to indicate one The serving cell on the SCG side that needs to request system broadcast information.
  • the first indication information is used to indicate that the cell that needs to request system broadcast information is a PSCell.
  • the system broadcast request message further carries second indication information, and the second indication information is used to indicate the one indicated by the first indication information.
  • the SIB type the SIB type of the SIB
  • the network side (such as the base station) can determine which cells (that is, which serving cells) need to request system broadcast information through the received first indication information. Further, the network side (such as the base station) can determine which SIBs of each of these cells are requested by the terminal device through the received second indication information.
  • the second indication information includes a second bitmap, each bit in the second bitmap corresponds to a SIB type, and the value of the bit is used to indicate the bit Whether the corresponding SIB type needs to be requested.
  • the value of a bit is 1 which means that the SIB type corresponding to the bit needs to be requested, and the value of the bit is 0 which means that the SIB type corresponding to the value of the bit does not need to be requested.
  • one or more cells that need to request system broadcast information indicated in the first indication information, and/or each cell indicated in the second indication information can be determined in the following ways:
  • the terminal device determines, based on at least one of the following, the target cell that needs to request system broadcast information (that is, the one or more cells that need to request system broadcast information indicated in the first indication information) and/or the SIB type that the target cell needs to request : PDU session identifier corresponding to the DRB, at least one serving cell identifier associated with the logical channel identifier, at least one serving cell identifier associated with the DRB identifier, at least one serving cell associated with the logical channel, and at least one serving cell associated with the DRB.
  • the terminal device determines whether the DRB corresponding to the PDU session is established on the MN side, the SCG side, or both the MN side and the SCG side. Correspondingly, the terminal device can request the serving cell on the MN side, or the serving cell on the SCG side, or the serving cells on the MN side and the SCG side to issue the corresponding SIB.
  • a certain logical channel identifier is configured on the network side to be associated with a certain serving cell identity, and when the terminal device determines that the service identified by the LCID needs to use a certain SIB, it requests the serving cell associated with the LCID The serving cell indicated by the identifier delivers the SIB.
  • LCID logical channel identifier
  • FIG. 4 is a schematic diagram of the structural composition of an apparatus for requesting system broadcast information provided by an embodiment of the application, which is applied to terminal equipment.
  • the apparatus for requesting system broadcast information includes:
  • the sending unit 401 is configured to send a system broadcast request message, where the system broadcast request message carries first indication information, and the first indication information is used to indicate one or more cells that need to request system broadcast information.
  • the sending unit 401 is configured to send a system broadcast request message to the PCell.
  • the first indication information includes one or more serving cell indexes; each serving cell index in the one or more serving cell indexes is used to indicate a cell that needs to request system broadcast information;
  • the first indication information includes a first bitmap, each bit in the first bitmap corresponds to a serving cell, and the value of the bit is set to the first value to indicate the service corresponding to the bit The cell needs to request the system to broadcast information.
  • the first indication information is used to indicate one of the following: PCell, PSCell, PCell, and PSCell; wherein,
  • the first indication information indicates the PCell
  • the first indication information is used to indicate that the cell that needs to request system broadcast information is the PCell
  • the first indication information indicates the PSCell
  • the first indication information is used to indicate that the cell that needs to request system broadcast information is the PSCell
  • the first indication information indicates the PCell and the PSCell
  • the first indication information is used to indicate that the cells that need to request system broadcast information are the PCell and the PSCell.
  • the first indication information is used to indicate one of the following: MCG, SCG, MCG, and SCG; wherein,
  • the first indication information indicates the MCG
  • the first indication information is used to indicate that the cells that need to request system broadcast information are all serving cells on the MCG side; or,
  • the first indication information indicates the SCG
  • the first indication information is used to indicate that the cells that need to request system broadcast information are all serving cells on the SCG side; or,
  • the first indication information indicates MCG and SCG
  • the first indication information is used to indicate that the cells that need to request system broadcast information are all serving cells on the MCG side and all serving cells on the SCG side.
  • the first indication information is used to indicate that a cell that needs to request system broadcast information is one or more serving cells on the MCG side; and/or,
  • the first indication information is used to indicate that a cell that needs to request system broadcast information is one or more serving cells on the SCG side.
  • the first indication information includes MCG indication information and one or more first serving cell indexes, and each first serving cell index of the one or more first serving cell indexes is used for Indicate a serving cell on the MCG side that needs to request system broadcast information; and/or,
  • the first indication information includes SCG indication information and one or more second serving cell indexes, and each second serving cell index in the one or more second serving cell indexes is used to indicate a need to request system broadcast information The serving cell on the SCG side.
  • the sending unit 401 is configured to send a system broadcast request message to the PSCell.
  • the sending unit 401 is configured to send a system broadcast request message to the PSCell through SRB3.
  • the first indication information includes one or more second serving cell indexes; each second serving cell index in the one or more second serving cell indexes is used to indicate a request The serving cell on the SCG side where the system broadcasts information.
  • the first indication information is used to indicate that a cell that needs to request system broadcast information is a PSCell.
  • the system broadcast request message further carries second indication information, and the second indication information is used to indicate the SIB type that each cell of the one or more cells needs to request.
  • the device further includes:
  • the determining unit 402 is configured to determine the target cell that needs to request system broadcast information and/or the SIB type that the target cell needs to request based on at least one of the following: PDU session identifier corresponding to DRB, at least one serving cell identifier associated with logical channel identifier, DRB Identify the associated at least one serving cell identifier, the at least one serving cell associated with the logical channel, and the at least one serving cell associated with the DRB.
  • the system broadcast request message is a DedicatedSIBRequest message.
  • the terminal device is a terminal device in a connected state.
  • FIG. 5 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application.
  • the communication device may be a terminal device or a network device.
  • the communication device 500 shown in FIG. 5 includes a processor 510.
  • the processor 510 can call and run a computer program from the memory to implement the method in the embodiments of the present application.
  • the communication device 500 may further include a memory 520.
  • the processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.
  • the memory 520 may be a separate device independent of the processor 510, or may be integrated in the processor 510.
  • the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 530 may include a transmitter and a receiver.
  • the transceiver 530 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 500 may specifically be a network device of an embodiment of the present application, and the communication device 500 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here. .
  • the communication device 500 may specifically be a mobile terminal/terminal device of an embodiment of the application, and the communication device 500 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the application.
  • I won’t repeat it here.
  • Fig. 6 is a schematic structural diagram of a chip of an embodiment of the present application.
  • the chip 600 shown in FIG. 6 includes a processor 610, and the processor 610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 600 may further include a memory 620.
  • the processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the chip 600 may further include an input interface 630.
  • the processor 610 can control the input interface 630 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 600 may further include an output interface 640.
  • the processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.
  • FIG. 7 is a schematic block diagram of a communication system 700 according to an embodiment of the present application. As shown in FIG. 7, the communication system 700 includes a terminal device 710 and a network device 720.
  • the terminal device 710 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 720 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments may be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application , For the sake of brevity, I won’t repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For the sake of brevity, I will not repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the 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, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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Abstract

本申请实施例提供一种请求系统广播信息的方法及装置、终端设备，该方法包括：终端设备发送系统广播请求消息，所述系统广播请求消息携带第一指示信息，所述第一指示信息用于指示需要请求系统广播信息的一个或多个小区。

Description

一种请求系统广播信息的方法及装置、终端设备 技术领域
本申请实施例涉及移动通信技术领域，具体涉及一种请求系统广播信息的方法及装置、终端设备。
背景技术
为了减少基站默认广播的系统信息(System Information，SI)的数量，从而节省无线资源，引入按需发送系统广播信息的机制，具体地，基站只有在收到终端设备的SI请求后才会下发SI。
目前，按需发送系统广播信息的机制没有考虑多无线接入技术-双连接(Multi-RAT-Dual Connectivity，MR-DC)场景和载波聚合场景(Carrier Aggregation，CA)，如何在这种场景下实现按需发送系统广播信息需要明确。
发明内容
本申请实施例提供一种请求系统广播信息的方法及装置、终端设备。
本申请实施例提供的请求系统广播信息的方法，包括：
终端设备发送系统广播请求消息，所述系统广播请求消息携带第一指示信息，所述第一指示信息用于指示需要请求系统广播信息的一个或多个小区。
本申请实施例提供的请求系统广播信息的装置，应用于终端设备，所述装置包括：
发送单元，用于发送系统广播请求消息，所述系统广播请求消息携带第一指示信息，所述第一指示信息用于指示需要请求系统广播信息的一个或多个小区。
本申请实施例提供的终端设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述的请求系统广播信息的方法。
本申请实施例提供的芯片，用于实现上述的请求系统广播信息的方法。
具体地，该芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该芯片的设备执行上述的请求系统广播信息的方法。
本申请实施例提供的计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述的请求系统广播信息的方法。
本申请实施例提供的计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行上述的请求系统广播信息的方法。
本申请实施例提供的计算机程序，当其在计算机上运行时，使得计算机执行上述的请求系统广播信息的方法。
通过上述技术方案，在MR-DC场景或CA场景下，由于存在多个小区的分布，终端设备在向网络侧请求系统广播信息(也即SI)时，在系统广播请求消息中指示出需要请求系统广播信息的一个或多个小区，如此，可以明确终端设备需要请求系统广播信息的目标小区有哪些，从而完善了MR-DC场景或CA场景下的按需发送系统广播信息的机制。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是本申请实施例提供的一种通信系统架构的示意性图；
图2是本申请实施例提供的按需发送系统广播信息的流程图；
图3为本申请实施例提供的请求系统广播信息的方法的流程示意图；
图4为本申请实施例提供的请求系统广播信息的装置的结构组成示意图；
图5是本申请实施例提供的一种通信设备示意性结构图；
图6是本申请实施例的芯片的示意性结构图；
图7是本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、系统、5G通信系统或未来的通信系统等。
示例性的，本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110，网络设备110可以是与终端120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端进行通信。可选地，该网络设备110可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器，或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来通信系统中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端120。作为在此使用的“终端”包括但不限于经由有线线路连接，如经由公共交换电话网络(Public Switched Telephone Networks，PSTN)、数字用户线路(Digital Subscriber Line，DSL)、数字电缆、直接电缆连接；和/或另一数据连接/网络；和/或经由无线接口，如，针对蜂窝网络、无线局域网(Wireless Local Area Network，WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器；和/或另一终端的被设置成接收/发送通信信号的装置；和/或物联网(Internet of Things，IoT)设备。被设置成通过无线接口通信的终端可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话；可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System，PCS)终端；可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System，GPS)接收器的PDA；以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端可以指接入终端、用户设备(User Equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop， WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端或者未来演进的PLMN中的终端等。
可选地，终端120之间可以进行终端直连(Device to Device，D2D)通信。
可选地，5G通信系统或5G网络还可以称为新无线(New Radio，NR)系统或NR网络。
图1示例性地示出了一个网络设备和两个终端，可选地，该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端，本申请实施例对此不做限定。
可选地，该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例对此不作限定。
应理解，本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统100为例，通信设备可包括具有通信功能的网络设备110和终端120，网络设备110和终端120可以为上文所述的具体设备，此处不再赘述；通信设备还可包括通信系统100中的其他设备，例如网络控制器、移动管理实体等其他网络实体，本申请实施例中对此不做限定。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
为便于理解本申请实施例的技术方案，以下对本申请实施例相关的技术方案进行说明。
随着人们对速率、延迟、高速移动性、能效的追求以及未来生活中业务的多样性、复杂性，为此第三代合作伙伴计划(3 rd Generation Partnership Project，3GPP)国际标准组织开始研发5G。5G的主要应用场景为：增强移动超宽带(enhanced Mobile Broadband，eMBB)、低时延高可靠通信(Ultra-Reliable Low-Latency Communications，URLLC)、大规模机器类通信(massive Machine-Type Communications，mMTC)。
一方面，eMBB仍然以用户获得多媒体内容、服务和数据为目标，其需求增长十分迅速。另一方面，由于eMBB可能部署在不同的场景中，例如室内，市区，农村等，其能力和需求的差别也比较大，所以不能一概而论，必须结合具体的部署场景详细分析。URLLC的典型应用包括：工业自动化，电力自动化，远程医疗操作(手术)，交通安全保障等。mMTC的典型特点包括：高连接密度，小数据量，时延不敏感业务，模块的低成本和长使用寿命等。
在NR早期部署时，完整的NR覆盖很难获取，所以典型的网络覆盖是广域的LTE覆盖和NR的孤岛覆盖模式。而且大量的LTE部署在6GHz以下，可用于5G的6GHz以下频谱很少。所以NR必须研究6GHz以上的频谱应用，而高频段覆盖有限、信号衰落快。同时为了保护移动运营商前期在LTE投资，提出了LTE和NR之间紧耦合(tight interworking)的工作模式。
Figure PCTCN2020085703-appb-000001
双连接(Dual Connectivity，DC)
为了能够尽快实现5G网络部署和商业应用，3GPP首先完成第一个5G版本，即EN-DC(LTE-NR Dual Connectivity)。在EN-DC中，LTE基站(eNB)作为主节点(Master Node，MN)，NR基站(gNB或en-gNB)作为辅节点(Secondary Node，SN)，连接EPC核心网。在R15后期，将支持其他DC模式，即NE-DC，5GC-EN-DC，NR DC。在NE-DC中，NR基站作为MN，eLTE基站作为SN，连接5GC核心网。在5GC-EN-DC中，eLTE 基站作为MN，NR基站作为SN，连接5GC核心网。在NR DC中，NR基站作为MN，NR基站作为SN，连接5GC核心网。
本申请实施例的技术方案，不仅可以应用于双连接架构(如MR-DC架构)，还可以应用于多连接(Multiple Connectivity，MC)架构，典型地，MC架构可以是MR-MC架构。
Figure PCTCN2020085703-appb-000002
载波聚合
为了满足高速率的需求，5G中也支持CA技术。CA即通过联合调度和使用多个成员载波(Component Carrier，CC)上的资源，使得NR系统可以支持更大的带宽，从而能够实现更高的系统峰值速率。根据所聚合载波的在频谱上的连续性可以分为，连续性载波聚合和非连续性载波聚合；根据聚合的载波所在的频段(band)是否相同，分为频段内(Intra-band)载波聚合和频段间(inter-band)载波聚合。
在CA中，有且只有一个主载波(Primary Cell Component，PCC)，PCC提供RRC信令连接，非接入层(Non-Access Stratrum，NAS)功能，安全等。物理上行控制信道(Physical Downlink Control Channel，PUCCH)在PCC上且只在PCC上存在。在CA中，可以有一个或多个辅载波(Secondary Cell Component，SCC)，SCC只提供额外的无线资源。PCC和SCC同称为服务小区，其中，PCC上的小区为主小区(PCell)，SCC上的小区为辅小区(SCell)。标准上还规定聚合的载波最多支持5个，即聚合后的最大带宽为100MHZ，并且聚合载波属于同一个基站。所有的聚合载波使用相同的小区无线网络临时标识(Cell-Radio Network Temporary Identifier，C-RNTI)，基站实现保证C-RNTI在每个载波所在的小区不发生冲突。由于支持不对称载波聚合和对称载波聚合两种，所以要求聚合的载波一定有下行载波，可以没有上行载波。而且对于主载波小区来说一定有本小区的物理下行控制信道(Physical Downlink Control Channel，PDCCH)和PUCCH，而且只有主载波小区有PUCCH，其他辅载波小区可能有PDCCH。
Figure PCTCN2020085703-appb-000003
RRC状态
5G为了降低空口信令和快速恢复无线连接，快速恢复数据业务的目的，定义了一个新的无线资源控制(Radio Resource Control，RRC)状态，即RRC非激活(RRC_INACTIVE)状态。这种状态有别于RRC空闲(RRC_IDLE)状态和RRC激活(RRC_ACTIVE)状态。其中，
1)RRC_IDLE状态(简称为空闲(idle)态)：移动性为基于终端设备的小区选择重选，寻呼由核心网(Core Network，CN)发起，寻呼区域由CN配置。基站侧不存在终端设备上下文，不存在RRC连接。
2)RRC_CONNECTED状态(简称为连接(connected)态)：存在RRC连接，基站侧和终端设备侧存在终端设备上下文。网络侧知道终端设备的位置是具体小区级别的。移动性是网络侧控制的移动性。终端设备和基站之间可以传输单播数据。
3)RRC_INACTIVE状态(简称为非激活(inactive)态)：移动性为基于终端设备的小区选择重选，存在CN-NR之间的连接，终端设备上下文存在某个基站上，寻呼由RAN触发，基于RAN的寻呼区域由RAN管理，网络侧知道终端设备的位置是基于RAN的寻呼区域级别的。
Figure PCTCN2020085703-appb-000004
按需发送系统广播信息的机制
为了减少基站默认广播的SI的数量，从而节省无线资源，引入按需发送系统广播信息的机制，SI可以包含主信息块(Master Information Block，MIB)和至少一个系统信息块(System Information Block，SIB)，例如SIB1、SIB2、SIB3、…….、SIB18等。可选地，除了MIB和SIB1以外，其他SIB都可以是按需请求的，具体地，基站只有在收到终端设备的SI请求后才会下发SI。参照图2，201a：基站向终端设备发送MIB； 201b：基站向终端设备发送SIB1；202：终端设备向基站发送系统广播请求消息(即SystemInformationRequest消息)；203：基站向终端设备发送系统信息消息(即SystemInformation消息)。
其中，SIB1中携带有每个SI是否正在被广播的指示信息，终端设备通过读取SIB1可以获知哪些SIB需要进行SI请求。其中，SI请求的方式包括基于MSG1的SI请求(MSG1-based SI请求)和基于MSG3的SI请求(MSG3-based SI请求)。
这里，MSG1-based SI请求基于预留的前导码(Preamble)和/或随机接入信道资源(RACH resource)来实现，其中，RACH resource是指RACH时机(RACH Occasion，RO)资源。
这里，对于MSG3-based SI请求，不需要预留Preamble和RACH resource，通过RRC系统信息请求(RRCSystemInfoRequest)消息(即MSG3)来实现。
终端设备通过读取系统信息(即SIB1)来获知采用MSG1-based SI请求还是MSG3-based SI请求。如果基站在系统信息(即SIB1)提供了SI请求的配置信息(即si-Request-Config)，则终端设备使用MSG1-based SI请求，否则使用MSG3-based SI请求。
终端设备在收到基站的SI请求确认后，在当前的修改周期接收SI，终端设备接收SI直到修改周期结束或者直到收到SI。如果SI请求过程中发生了随机接入失败，则之后终端设备的行为取决于自身实现。
R15不支持连接态的终端设备请求系统广播信息。R16支连接态的终端设备请求系统广播信息，具体地，定义了专用信令(即DedicatedSIBRequest消息)用于请求系统广播信息，在专用信令中以SIB为粒度(即per SIB)来请求系统广播信息。
目前，按需发送系统广播信息的机制没有考虑MR-DC场景或者CA场景，由于MR-DC场景或者CA场景下存在多个小区分布，例如MR-DC场景下，MN侧有主小区组(Master Cell Group，MCG)，进一步，MCG包括一个PCell以及一个或多个SCell。SN侧有辅小区组(Secondary Cell Group，SCG)，进一步，SCG包括一个主辅小区(PSCell)，可选地，还包括一个或多个SCell。再例如CA场景下，有一个PCell以及一个或多个SCell。连接态的终端设备如何对PSCell和SCells的系统广播信息进行请求需要明确，为此，提出了本申请实施例的以下技术方案。
需要说明的是，本申请实施例中的“系统广播请求消息”也可以称为“系统信息请求消息”或者“SI请求消息”。
需要说明的是，本申请实施例中的“系统广播信息”也可以称为“系统信息(即SI)”或者“系统信息块(即SIB)”。
需要说明的是，本申请实施例的技术方案可以应用于MR-DC场景或者CA场景。对于MR-DC场景，MN侧有MCG，进一步，MCG包括一个PCell以及一个或多个SCell。SN侧有SCG，进一步，SCG包括一个主辅小区(PSCell)，可选地，还包括一个或多个SCell。对于CA场景，有一个PCell以及一个或多个SCell。
图3为本申请实施例提供的请求系统广播信息的方法的流程示意图，如图3所示，所述请求系统广播信息的方法包括以下步骤：
步骤301：终端设备发送系统广播请求消息，所述系统广播请求消息携带第一指示信息，所述第一指示信息用于指示需要请求系统广播信息的一个或多个小区。
本申请实施例中，所述终端设备为处于连接态的终端设备。不局限于此，所述终端设备还可以是处于其他RRC状态的终端设备。
在一可选方式中，所述终端设备为处于连接态的终端设备的情况下，所述系统广播请求消息为专用SIB请求(DedicatedSIBRequest)消息。
本申请实施例中，所述终端设备可以通过以下方式发送系统广播请求消息。
●方式一：所述终端设备向PCell发送系统广播请求消息。
在一可选方式中，对于MR-DC场景，PCell为MN侧的主小区。在另一可选方式中，对于CA场景，PCell为聚合的多个载波中的主小区。
本申请实施例中，所述系统广播请求消息携带第一指示信息，所述第一指示信息用于指示需要请求系统广播信息的一个或多个小区。
这里，对于MR-DC场景，所述一个或多个小区包括以下至少之一：PSCell、MN侧的至少一个SCell、SN侧的至少一个SCell。对于CA场景，所述一个或多个小区包括聚合的载波中的一个或多个SCell。
A)在一可选方式中，所述第一指示信息包括一个或多个服务小区索引(serving cell index)；所述一个或多个服务小区索引中的每个服务小区索引用于指示一个需要请求系统广播信息的小区。或者，所述第一指示信息包括第一比特图，所述第一比特图中的每个比特位对应一个服务小区(serving cell)(或者对应一个服务小区索引)，所述比特位的取值设置为第一值表示该比特位对应的服务小区需要请求系统广播信息。
这里，所述第一值例如是1，基于此，第一比特图中的某个比特位的取值设置为1，则表示该比特位对应的服务小区需要请求系统广播信息。此外，如果第一比特图中的某个比特位的取值设置为0(即第二值)，则表示该比特位对应的服务小区不需要请求系统广播信息。
进一步，可选地，所述系统广播请求消息还携带第二指示信息，所述第二指示信息用于指示所述一个或多个小区中的每个小区需要请求的SIB类型。
网络侧(如基站)通过接收到的第一指示信息可以确定哪些小区(即哪些服务小区)需要请求系统广播信息。进一步，网络侧(如基站)通过接收到的第二指示信息可以确定终端设备请求这些小区中每个小区的哪些SIB。
在一可选方式中，所述第二指示信息包括第二比特图，所述第二比特图中的每个比特位与一个SIB类型对应，所述比特位的取值用于指示该比特位对应的SIB类型是否需要请求。例如：比特位的取值为1代表该比特位对应的SIB类型需要请求，比特位的取值为0代表该比特位的取值对应的SIB类型不需要请求。
B)在一可选方式中，所述第一指示信息用于指示以下之一：PCell、PSCell、PCell和PSCell(即both)；其中，
所述第一指示信息指示PCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PCell；或者，
所述第一指示信息指示PSCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PSCell；或者，
所述第一指示信息指示PCell和PSCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PCell和PSCell。
进一步，可选地，所述系统广播请求消息还携带第二指示信息，所述第二指示信息用于指示所述第一指示信息所指示的一个或多个小区中的每个小区需要请求的SIB类型。
网络侧(如基站)通过接收到的第一指示信息可以确定哪些小区(即哪些服务小区)需要请求系统广播信息。进一步，网络侧(如基站)通过接收到的第二指示信息可以确定终端设备请求这些小区中每个小区的哪些SIB。
在一可选方式中，所述第二指示信息包括第二比特图，所述第二比特图中的每个比特位与一个SIB类型对应，所述比特位的取值用于指示该比特位对应的SIB类型是否需 要请求。例如：比特位的取值为1代表该比特位对应的SIB类型需要请求，比特位的取值为0代表该比特位的取值对应的SIB类型不需要请求。
C)在一可选方式中，所述第一指示信息用于指示以下之一：MCG、SCG、MCG和SCG(即both)；其中，
所述第一指示信息指示MCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的所有服务小区；或者，
所述第一指示信息指示SCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为SCG侧的所有服务小区；或者，
所述第一指示信息指示MCG和SCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的所有服务小区和SCG侧的所有服务小区。
进一步，可选地，所述系统广播请求消息还携带第二指示信息，所述第二指示信息用于指示所述第一指示信息所指示的一个或多个小区中的每个小区需要请求的SIB类型。
网络侧(如基站)通过接收到的第一指示信息可以确定哪些小区(即哪些服务小区)需要请求系统广播信息。进一步，网络侧(如基站)通过接收到的第二指示信息可以确定终端设备请求这些小区中每个小区的哪些SIB。
在一可选方式中，所述第二指示信息包括第二比特图，所述第二比特图中的每个比特位与一个SIB类型对应，所述比特位的取值用于指示该比特位对应的SIB类型是否需要请求。例如：比特位的取值为1代表该比特位对应的SIB类型需要请求，比特位的取值为0代表该比特位的取值对应的SIB类型不需要请求。
D)在一可选方式中，所述第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的一个或多个服务小区；和/或，所述第一指示信息用于指示需要请求系统广播信息的小区为SCG侧的一个或多个服务小区。
具体地，所述第一指示信息包括MCG指示信息以及一个或多个第一服务小区索引，所述一个或多个第一服务小区索引中的每个第一服务小区索引用于指示一个需要请求系统广播信息的MCG侧的服务小区；和/或，所述第一指示信息包括SCG指示信息以及一个或多个第二服务小区索引，所述一个或多个第二服务小区索引中的每个第二服务小区索引用于指示一个需要请求系统广播信息的SCG侧的服务小区。
进一步，可选地，所述系统广播请求消息还携带第二指示信息，所述第二指示信息用于指示所述第一指示信息所指示的一个或多个小区中的每个小区需要请求的SIB类型。
网络侧(如基站)通过接收到的第一指示信息可以确定哪些小区(即哪些服务小区)需要请求系统广播信息。进一步，网络侧(如基站)通过接收到的第二指示信息可以确定终端设备请求这些小区中每个小区的哪些SIB。
在一可选方式中，所述第二指示信息包括第二比特图，所述第二比特图中的每个比特位与一个SIB类型对应，所述比特位的取值用于指示该比特位对应的SIB类型是否需要请求。例如：比特位的取值为1代表该比特位对应的SIB类型需要请求，比特位的取值为0代表该比特位的取值对应的SIB类型不需要请求。
●方式二：所述终端设备向PSCell发送系统广播请求消息。
在一可选方式中，对于MR-DC场景，PSCell为SN侧的主小区。所述终端设备通过SRB3向PSCell发送系统广播请求消息。这里，SRB3是指终端设备与SN之间的交互信令。
本申请实施例中，所述系统广播请求消息携带第一指示信息，所述第一指示信息用于指示需要请求系统广播信息的一个或多个小区。
这里，对于MR-DC场景，所述一个或多个小区包括以下至少之一：PSCell、SN侧的至少一个SCell。
I)在一可选方式中，所述第一指示信息包括一个或多个第二服务小区索引；所述一个或多个第二服务小区索引中的每个第二服务小区索引用于指示一个需要请求系统广播信息的SCG侧的服务小区。
II)在一可选方式中，所述第一指示信息用于指示需要请求系统广播信息的小区为PSCell。
在上述I)和/或II)方案的基础上，可选地，所述系统广播请求消息还携带第二指示信息，所述第二指示信息用于指示所述第一指示信息所指示的一个或多个小区中的每个小区需要请求的SIB类型。
网络侧(如基站)通过接收到的第一指示信息可以确定哪些小区(即哪些服务小区)需要请求系统广播信息。进一步，网络侧(如基站)通过接收到的第二指示信息可以确定终端设备请求这些小区中每个小区的哪些SIB。
在一可选方式中，所述第二指示信息包括第二比特图，所述第二比特图中的每个比特位与一个SIB类型对应，所述比特位的取值用于指示该比特位对应的SIB类型是否需要请求。例如：比特位的取值为1代表该比特位对应的SIB类型需要请求，比特位的取值为0代表该比特位的取值对应的SIB类型不需要请求。
对于上述方式一或方式二的方案，可选地，所述第一指示信息中所指示的需要请求系统广播信息的一个或多个小区，和/或所述第二指示信息中所指示的每个小区需要请求的SIB类型，可以通过以下方式确定：
所述终端设备基于以下至少之一确定需要请求系统广播信息的目标小区(即第一指示信息中所指示的需要请求系统广播信息的一个或多个小区)和/或目标小区需要请求的SIB类型：DRB对应的PDU会话标识、逻辑信道标识关联的至少一个服务小区标识、DRB标识关联的至少一个服务小区标识、逻辑信道关联的至少一个服务小区、DRB关联的至少一个服务小区。
在一个示例中，如果网络侧配置了DRB1关联的PDU会话需要获取某个SIB，则终端设备判断该PDU会话对应的DRB建立在MN侧还是SCG侧，还是同时建立在MN侧和SCG侧。相应地，终端设备可以请求MN侧的服务小区、或者SCG侧的服务小区、或者MN侧和SCG侧的服务小区下发相应的SIB。
在另一个示例中，网络侧配置了某个逻辑信道标识(LCID)关联某个服务小区标识，则终端设备在判断出该LCID标识的业务需要使用某个SIB时，请求该LCID关联的服务小区标识所指示的服务小区下发该SIB。
图4为本申请实施例提供的请求系统广播信息的装置的结构组成示意图，应用于终端设备，如图4所示，所述请求系统广播信息的装置包括：
发送单元401，用于发送系统广播请求消息，所述系统广播请求消息携带第一指示信息，所述第一指示信息用于指示需要请求系统广播信息的一个或多个小区。
在一可选方式中，所述发送单元401，用于向PCell发送系统广播请求消息。
在一可选方式中，所述第一指示信息包括一个或多个服务小区索引；所述一个或多个服务小区索引中的每个服务小区索引用于指示一个需要请求系统广播信息的小区；或者，所述第一指示信息包括第一比特图，所述第一比特图中的每个比特位对应一个服务小区，所述比特位的取值设置为第一值表示该比特位对应的服务小区需要请求系统广播信息。
在一可选方式中，所述第一指示信息用于指示以下之一：PCell、PSCell、PCell和PSCell；其中，
所述第一指示信息指示PCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PCell；或者，
所述第一指示信息指示PSCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PSCell；或者，
所述第一指示信息指示PCell和PSCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PCell和PSCell。
在一可选方式中，所述第一指示信息用于指示以下之一：MCG、SCG、MCG和SCG；其中，
所述第一指示信息指示MCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的所有服务小区；或者，
所述第一指示信息指示SCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为SCG侧的所有服务小区；或者，
所述第一指示信息指示MCG和SCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的所有服务小区和SCG侧的所有服务小区。
在一可选方式中，所述第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的一个或多个服务小区；和/或，
所述第一指示信息用于指示需要请求系统广播信息的小区为SCG侧的一个或多个服务小区。
在一可选方式中，所述第一指示信息包括MCG指示信息以及一个或多个第一服务小区索引，所述一个或多个第一服务小区索引中的每个第一服务小区索引用于指示一个需要请求系统广播信息的MCG侧的服务小区；和/或，
所述第一指示信息包括SCG指示信息以及一个或多个第二服务小区索引，所述一个或多个第二服务小区索引中的每个第二服务小区索引用于指示一个需要请求系统广播信息的SCG侧的服务小区。
在一可选方式中，所述发送单元401，用于向PSCell发送系统广播请求消息。
在一可选方式中，所述发送单元401，用于通过SRB3向PSCell发送系统广播请求消息。
在一可选方式中，所述第一指示信息包括一个或多个第二服务小区索引；所述一个或多个第二服务小区索引中的每个第二服务小区索引用于指示一个需要请求系统广播信息的SCG侧的服务小区。
在一可选方式中，所述第一指示信息用于指示需要请求系统广播信息的小区为PSCell。
在一可选方式中，所述系统广播请求消息还携带第二指示信息，所述第二指示信息用于指示所述一个或多个小区中的每个小区需要请求的SIB类型。
在一可选方式中，所述装置还包括：
确定单元402，用于基于以下至少之一确定需要请求系统广播信息的目标小区和/或目标小区需要请求的SIB类型：DRB对应的PDU会话标识、逻辑信道标识关联的至少一个服务小区标识、DRB标识关联的至少一个服务小区标识、逻辑信道关联的至少一个服务小区、DRB关联的至少一个服务小区。
在一可选方式中，所述系统广播请求消息为DedicatedSIBRequest消息。
在一可选方式中，所述终端设备为处于连接态的终端设备。
本领域技术人员应当理解，本申请实施例的上述请求系统广播信息的装置的相关描述可以参照本申请实施例的请求系统广播信息的方法的相关描述进行理解。
图5是本申请实施例提供的一种通信设备500示意性结构图。该通信设备可以是终 端设备，也可以是网络设备，图5所示的通信设备500包括处理器510，处理器510可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图5所示，通信设备500还可以包括存储器520。其中，处理器510可以从存储器520中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器520可以是独立于处理器510的一个单独的器件，也可以集成在处理器510中。
可选地，如图5所示，通信设备500还可以包括收发器530，处理器510可以控制该收发器530与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器530可以包括发射机和接收机。收发器530还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备500具体可为本申请实施例的网络设备，并且该通信设备500可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备500具体可为本申请实施例的移动终端/终端设备，并且该通信设备500可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
图6是本申请实施例的芯片的示意性结构图。图6所示的芯片600包括处理器610，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图6所示，芯片600还可以包括存储器620。其中，处理器610可以从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。
可选地，该芯片600还可以包括输入接口630。其中，处理器610可以控制该输入接口630与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片600还可以包括输出接口640。其中，处理器610可以控制该输出接口640与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的网络设备，并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该芯片可应用于本申请实施例中的移动终端/终端设备，并且该芯片可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
图7是本申请实施例提供的一种通信系统700的示意性框图。如图7所示，该通信系统700包括终端设备710和网络设备720。
其中，该终端设备710可以用于实现上述方法中由终端设备实现的相应的功能，以及该网络设备720可以用于实现上述方法中由网络设备实现的相应的功能为了简洁，在此不再赘述。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成 可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选的，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的移动终端/终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选的，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序产品可应用于本申请实施例中的移动终端/终端设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序可应用于本申请实施例中的移动终端/终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，)ROM、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (35)

  1. 一种请求系统广播信息的方法，所述方法包括：
    终端设备发送系统广播请求消息，所述系统广播请求消息携带第一指示信息，所述第一指示信息用于指示需要请求系统广播信息的一个或多个小区。
  2. 根据权利要求1所述的方法，其中，所述终端设备发送系统广播请求消息，包括：
    所述终端设备向主小区PCell发送系统广播请求消息。
  3. 根据权利要求2所述的方法，其中，
    所述第一指示信息包括一个或多个服务小区索引serving cell index；所述一个或多个服务小区索引中的每个服务小区索引用于指示一个需要请求系统广播信息的小区；或者，
    所述第一指示信息包括第一比特图，所述第一比特图中的每个比特位对应一个服务小区serving cell，所述比特位的取值设置为第一值表示该比特位对应的服务小区需要请求系统广播信息。
  4. 根据权利要求2所述的方法，其中，所述第一指示信息用于指示以下之一：PCell、主辅小区PSCell、PCell和PSCell；其中，
    所述第一指示信息指示PCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PCell；或者，
    所述第一指示信息指示PSCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PSCell；或者，
    所述第一指示信息指示PCell和PSCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PCell和PSCell。
  5. 根据权利要求2所述的方法，其中，所述第一指示信息用于指示以下之一：主小区组MCG、辅小区组SCG、MCG和SCG；其中，
    所述第一指示信息指示MCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的所有服务小区；或者，
    所述第一指示信息指示SCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为SCG侧的所有服务小区；或者，
    所述第一指示信息指示MCG和SCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的所有服务小区和SCG侧的所有服务小区。
  6. 根据权利要求2所述的方法，其中，
    所述第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的一个或多个服务小区；和/或，
    所述第一指示信息用于指示需要请求系统广播信息的小区为SCG侧的一个或多个服务小区。
  7. 根据权利要求6所述的方法，其中，
    所述第一指示信息包括MCG指示信息以及一个或多个第一服务小区索引，所述一个或多个第一服务小区索引中的每个第一服务小区索引用于指示一个需要请求系统广播信息的MCG侧的服务小区；和/或，
    所述第一指示信息包括SCG指示信息以及一个或多个第二服务小区索引，所述一个或多个第二服务小区索引中的每个第二服务小区索引用于指示一个需要请求系统广播信息的SCG侧的服务小区。
  8. 根据权利要求1所述的方法，其中，所述终端设备发送系统广播请求消息，包括：
    所述终端设备向PSCell发送系统广播请求消息。
  9. 根据权利要求8所述的方法，其中，所述终端设备向PSCell发送系统广播请求消息，包括：
    所述终端设备通过SRB3向PSCell发送系统广播请求消息。
  10. 根据权利要求8或9所述的方法，其中，所述第一指示信息包括一个或多个第二服务小区索引；所述一个或多个第二服务小区索引中的每个第二服务小区索引用于指示一个需要请求系统广播信息的SCG侧的服务小区。
  11. 根据权利要求8至10中任一项所述的方法，其中，所述第一指示信息用于指示需要请求系统广播信息的小区为PSCell。
  12. 根据权利要求1至11中任一项所述的方法，其中，所述系统广播请求消息还携带第二指示信息，所述第二指示信息用于指示所述一个或多个小区中的每个小区需要请求的SIB类型。
  13. 根据权利要求1至12中任一项所述的方法，其中，所述方法还包括：
    所述终端设备基于以下至少之一确定需要请求系统广播信息的目标小区和/或目标小区需要请求的SIB类型：DRB对应的PDU会话标识、逻辑信道标识关联的至少一个服务小区标识、DRB标识关联的至少一个服务小区标识、逻辑信道关联的至少一个服务小区、DRB关联的至少一个服务小区。
  14. 根据权利要求1至13中任一项所述的方法，其中，所述系统广播请求消息为专用SIB请求DedicatedSIBRequest消息。
  15. 根据权利要求1至14中任一项所述的方法，其中，所述终端设备为处于连接态的终端设备。
  16. 一种请求系统广播信息的装置，所述装置包括：
    发送单元，用于发送系统广播请求消息，所述系统广播请求消息携带第一指示信息，所述第一指示信息用于指示需要请求系统广播信息的一个或多个小区。
  17. 根据权利要求16所述的装置，其中，所述发送单元，用于向PCell发送系统广播请求消息。
  18. 根据权利要求17所述的装置，其中，
    所述第一指示信息包括一个或多个服务小区索引；所述一个或多个服务小区索引中的每个服务小区索引用于指示一个需要请求系统广播信息的小区；或者，
    所述第一指示信息包括第一比特图，所述第一比特图中的每个比特位对应一个服务小区serving cell，所述比特位的取值设置为第一值表示该比特位对应的服务小区需要请求系统广播信息。
  19. 根据权利要求17所述的装置，其中，所述第一指示信息用于指示以下之一：PCell、PSCell、PCell和PSCell；其中，
    所述第一指示信息指示PCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PCell；或者，
    所述第一指示信息指示PSCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PSCell；或者，
    所述第一指示信息指示PCell和PSCell的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为PCell和PSCell。
  20. 根据权利要求17所述的装置，其中，所述第一指示信息用于指示以下之一：MCG、SCG、MCG和SCG；其中，
    所述第一指示信息指示MCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的所有服务小区；或者，
    所述第一指示信息指示SCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为SCG侧的所有服务小区；或者，
    所述第一指示信息指示MCG和SCG的情况下，该第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的所有服务小区和SCG侧的所有服务小区。
  21. 根据权利要求17所述的装置，其中，
    所述第一指示信息用于指示需要请求系统广播信息的小区为MCG侧的一个或多个服务小区；和/或，
    所述第一指示信息用于指示需要请求系统广播信息的小区为SCG侧的一个或多个服务小区。
  22. 根据权利要求21所述的装置，其中，
    所述第一指示信息包括MCG指示信息以及一个或多个第一服务小区索引，所述一个或多个第一服务小区索引中的每个第一服务小区索引用于指示一个需要请求系统广播信息的MCG侧的服务小区；和/或，
    所述第一指示信息包括SCG指示信息以及一个或多个第二服务小区索引，所述一个或多个第二服务小区索引中的每个第二服务小区索引用于指示一个需要请求系统广播信息的SCG侧的服务小区。
  23. 根据权利要求16所述的装置，其中，所述发送单元，用于向PSCell发送系统广播请求消息。
  24. 根据权利要求23所述的装置，其中，所述发送单元，用于通过SRB3向PSCell发送系统广播请求消息。
  25. 根据权利要求23或24所述的装置，其中，所述第一指示信息包括一个或多个第二服务小区索引；所述一个或多个第二服务小区索引中的每个第二服务小区索引用于指示一个需要请求系统广播信息的SCG侧的服务小区。
  26. 根据权利要求23至25中任一项所述的装置，其中，所述第一指示信息用于指示需要请求系统广播信息的小区为PSCell。
  27. 根据权利要求16至26中任一项所述的装置，其中，所述系统广播请求消息还携带第二指示信息，所述第二指示信息用于指示所述一个或多个小区中的每个小区需要请求的SIB类型。
  28. 根据权利要求16至27中任一项所述的装置，其中，所述装置还包括：
    确定单元，用于基于以下至少之一确定需要请求系统广播信息的目标小区和/或目标小区需要请求的SIB类型：DRB对应的PDU会话标识、逻辑信道标识关联的至少一个服务小区标识、DRB标识关联的至少一个服务小区标识、逻辑信道关联的至少一个服务小区、DRB关联的至少一个服务小区。
  29. 根据权利要求16至28中任一项所述的装置，其中，所述系统广播请求消息为DedicatedSIBRequest消息。
  30. 根据权利要求16至29中任一项所述的装置，其中，所述终端设备为处于连接态的终端设备。
  31. 一种终端设备，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至15中任一项所述的方法。
  32. 一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至15中任一项所述的方法。
  33. 一种计算机可读存储介质，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至15中任一项所述的方法。
  34. 一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至15中任一项所述的方法。
  35. 一种计算机程序，所述计算机程序使得计算机执行如权利要求1至15中任一项所述的方法。
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