WO2023015506A1 - 切换方法及装置 - Google Patents

切换方法及装置 Download PDF

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Publication number
WO2023015506A1
WO2023015506A1 PCT/CN2021/112153 CN2021112153W WO2023015506A1 WO 2023015506 A1 WO2023015506 A1 WO 2023015506A1 CN 2021112153 W CN2021112153 W CN 2021112153W WO 2023015506 A1 WO2023015506 A1 WO 2023015506A1
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WIPO (PCT)
Prior art keywords
bwp
switching
paging
indication information
indication
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PCT/CN2021/112153
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English (en)
French (fr)
Inventor
李海涛
胡奕
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.)
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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 CN202180098767.0A priority Critical patent/CN117413585A/zh
Priority to PCT/CN2021/112153 priority patent/WO2023015506A1/zh
Publication of WO2023015506A1 publication Critical patent/WO2023015506A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • 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 present application relates to the communication field, and in particular to a handover method and device.
  • the bandwidth part (Bandwidth Part, referred to as BWP) is introduced in 5G new air interface (New Radio, referred to as NR), that is, a part of continuous bandwidth is allocated to terminal equipment in the entire large-bandwidth carrier.
  • the terminal only transmits and receives data within this part of the continuous bandwidth.
  • the connected terminal devices in the cell will not be configured on the same BWP. Since the base station needs to serve a large number of terminal devices, the base station needs to use a larger frequency domain range to send and receive service data of multiple terminal devices in the cell, which consumes a lot of power. When the base station needs to adjust the frequency domain range of data transmission and reception to save energy, in order to keep the terminal equipment consistent with the base station, it is necessary to perform BWP switching on the terminal equipment.
  • the base station needs to notify the terminal equipments in the cell that need to perform the BWP handover one by one, resulting in a large signaling overhead.
  • Embodiments of the present application provide a handover method and device to reduce signaling overhead of BWP handover when a base station needs to save energy.
  • the embodiment of the present application provides a handover method, which is applied to a terminal device, and the terminal device is in a connected state, and the method includes:
  • the embodiment of the present application provides a handover method applied to a network device, the method comprising:
  • the embodiment of the present application provides a switching device, including:
  • An acquisition module configured to acquire indication information based on paging monitoring
  • the switching module is configured to switch the BWP of the terminal device according to the indication information, and the terminal device is in a connected state.
  • the embodiment of the present application provides a switching device, including:
  • a sending module configured to send indication information based on paging monitoring, where the indication information is used to indicate to switch the BWP of the terminal device, and the terminal device is in a connected state.
  • the embodiment of the present application provides a terminal device, including: a transceiver, a processor, and a memory;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the switching method according to any one of the first aspect.
  • the embodiment of the present application provides a network device, including: a transceiver, a processor, and a memory;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the switching method according to any one of the second aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement the first aspect or The switching method according to any one of the second aspect.
  • an embodiment of the present application provides a computer program product, including a computer program.
  • the computer program is executed by a processor, the switching method according to any one of the first aspect or the second aspect is implemented.
  • the terminal equipment acquires indication information based on paging monitoring, and switches the BWP of the terminal equipment according to the indication information.
  • the instruction information is transmitted through the transmission of paging process-related data in paging monitoring.
  • the paging process-related data is transmitted on the air interface, the paging process-related data of terminal devices with the same paging opportunity are summarized into one piece, and passed The paging channel is transmitted to the terminal equipment.
  • the network device when the network device wants to reduce the frequency range of data transmission and reception to save energy, it only needs to transmit the data related to the paging process by sending the PDCCH once, and it can instruct all the terminal devices in the cell to complete the BWP handover to ensure the communication with the network device. In this way, PDCCH resources can be saved and signaling overhead can be reduced.
  • FIG. 1 is a schematic diagram of updating system information provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of BWP switching provided by the embodiment of the present application.
  • FIG. 4 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a handover method provided in an embodiment of the present application.
  • FIG. 6 is a first schematic diagram of BWP switching time provided by the embodiment of the present application.
  • FIG. 7 is a second schematic diagram of the BWP switching time provided by the embodiment of the present application.
  • FIG. 8 is a third schematic diagram of BWP switching time provided by the embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a switching method provided in an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a switching device provided in an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a switching device provided in an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • Terminal device It can be a device that includes wireless transceiver functions and can cooperate with network devices to provide users with communication services.
  • the terminal equipment may refer to user equipment (User Equipment, UE), an access terminal, 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, a wireless communication device, User Agent or User Device.
  • UE User Equipment
  • a terminal device 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), a wireless Handheld devices with communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in future 5G networks or networks after 5G, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • Network equipment can be equipment used to communicate with terminal equipment, for example, it can be a global system for mobile communication (Global System for Mobile Communication, GSM) or code division multiple access (Code Division Multiple Access, CDMA) communication system
  • the base station also can be the base station (NodeB, NB) in the Wideband Code Division Multiple Access (WCDMA) system
  • WCDMA Wideband Code Division Multiple Access
  • the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and a network side device in a future 5G network or a network after 5G or a future evolved public land mobile network (Public Land Mobile Network, PLMN) network equipment in the network, etc.
  • PLMN Public Land Mobile Network
  • the network device involved in the embodiment of the present application may also be called a radio access network (Radio Access Network, RAN) device.
  • the RAN device is connected with the terminal device, and is used to receive the data of the terminal device and send it to the core network device.
  • RAN equipment corresponds to different equipment in different communication systems, for example, in the 2G system, it corresponds to the base station and the base station controller, in the 3G system, it corresponds to the base station and the radio network controller (Radio Network Controller, RNC), and in the 4G system, it corresponds to the evolution Evolutionary Node B (eNB), which corresponds to the 5G system in the 5G system, such as the access network equipment (such as gNB, centralized unit CU, distributed unit DU) in New Radio (NR).
  • gNB centralized unit CU
  • DU New Radio
  • Physical downlink control channel physical downlink control channel, referred to as PDCCH, is a collection of physical resource elements, carrying uplink and downlink control information.
  • the PDCCH mainly carries channel control information of a physical uplink shared channel (PUSCH for short) and a physical downlink shared channel (PDSCH for short). In one subframe, there may be multiple PDCCHs.
  • the UE first needs to demodulate the downlink control information (DCI for short) in the PDCCH, and then it can demodulate the corresponding PDSCH at the corresponding resource position, including broadcast messages and paging messages.
  • DCI downlink control information
  • Wireless network temporary identity Radio Network Tempory Identity, RNTI for short.
  • the network device sends the RNTI-scrambled downlink control channel to the terminal device, and the terminal device can receive the downlink data channel based on the indication information in the RNTI-scrambled downlink control channel, where different RNTIs can correspond to different downlink data channels.
  • RNTIs There are multiple RNTIs in the communication system, and the embodiment of the present application mainly involves paging RNTI (paging RNTI, P-RNTI for short), and the P-RNTI is used to identify the transmission of paging messages, wherein the paging P-RNTI is all terminal equipment shared.
  • the terminal device can determine the resources occupied by the PDSCH corresponding to the P-RNTI through the PDCCH scrambled by the P-RNTI, so as to obtain the paging message carried on the PDSCH.
  • RRC state The terminal device and the network device communicate with each other through the wireless channel and exchange information with each other. Therefore, a control mechanism is needed between the terminal device and the network device to exchange information and reach an agreement.
  • This control mechanism is RRC.
  • RRC states include RRC idle state (RRC_IDLE) and RRC connected state (RRC_CONNECTED).
  • RRC inactive state RRC_INACTIVE
  • the terminal device is in a non-connected state with the network device, but the context of the terminal device is still partially reserved. At the same time, in the RRC inactive state, the terminal device can quickly switch to the RRC connection state through paging messages, etc. .
  • RRC_IDLE Mobility is UE-based cell selection and reselection, paging is initiated by CN, and the paging area is configured by CN. There is no UE AS context on the base station side. There is no RRC connection.
  • RRC_CONNECTED There is an RRC connection, and the UE AS context exists between the base station and the UE.
  • the network side knows the location of the UE at the specific cell level. Mobility is mobility controlled by the network side. Unicast data can be transmitted between the UE and the base station.
  • Mobility is UE-based cell selection and reselection, there is a connection between CN-NR, UE AS context exists on a certain base station, paging is triggered by RAN, and the RAN-based paging area is managed by RAN, and the network side knows The location of the UE is based on the paging area level of the RAN.
  • the paging of the NR system mainly has three application scenarios, which are paging initiated by the core network, paging initiated by the gNB, and system information update notification initiated by the gNB.
  • the paging initiated by the core network is mainly for UEs in the RRC_IDLE state
  • the paging initiated by the gNB is mainly for UEs in the RRC_INACTIVE state
  • the system information update notification initiated by the gNB may be for any UE in the RRC state.
  • the paging message is carried on the PDSCH.
  • the UE Before receiving the paging message, the UE first needs to monitor the PDCCH.
  • the PDCCH carries the P-RNTI
  • the UE obtains the demodulation information of the PDSCH from the PDCCH, and according to the information indicated on the PDCCH Demodulate the relevant parameters of the PDSCH to receive the PDSCH, so as to obtain the paging message carried on the PDSCH.
  • Downlink control information DCI, which can be used to indicate or transmit downlink scheduling information, for example, PDSCH for carrying paging messages can be scheduled.
  • the scheduling information can include frequency domain resources, time domain resources, power control commands, or modulation and coding methods.
  • the DCI may be paging DCI, and the paging DCI may represent the control information used to schedule the PDSCH carrying the paging message, or to indicate that the control information only carries short message control information, or to indicate the control information
  • the information only carries the scheduling information, or the control information used to indicate that the control information carries the short message and the scheduling information, or the control information used to indicate the short message.
  • the paging DCI may be scrambled using P-RNTI.
  • System Information update cycle In the NR system, system information (System Information, SI for short) includes a master information block (MIB, Master Information Block) and a series of system information blocks (SIB, System Information Block).
  • MIB Master Information Block
  • SIB System Information Block
  • SIB1 System Information Block
  • the UE can obtain the system information change indication by receiving the DCI of the P-RNTI.
  • system information can only be changed in a specific wireless frame, and the time of change is called Update Cycle.
  • Update Cycle In the same update cycle, system information with the same content will be sent according to its schedule.
  • the system information update period is configured in system information.
  • the network device When the network device changes the system information, it will notify the UE in the update cycle, that is, the network device will transmit the updated system information only in the next update cycle. Once the UE receives the system information change instruction, the UE will start to acquire new system information in the next update period, and before the UE acquires the new system information, it will always use the previous system information for transmission.
  • Figure 1 is a schematic diagram of system information update provided by the embodiment of the present application.
  • the network device when a network device wants to update system information, the network device first repeatedly sends a system information change instruction in the nth system information update cycle, and the system information The change indication is used to indicate that the UE needs to change system information. Then, the network device repeatedly sends the changed system information in the n+1th system information update cycle.
  • modificationPeriodCoeff is the system information update cycle coefficient
  • defaultPagingCycle is the default paging cycle.
  • the two parameters, modificationPeriodCoeff and defaultPagingCycle, are determined by network device broadcast.
  • the system information update period is applicable to the update of system information except SIB6, SIB7, SIB8, and positioning assistance data.
  • the short message in the Paging DCI is used to notify the system information update indication, and the PDCCH where the paging DCI is located is scrambled by the P-RNTI.
  • systemInfoModification in the short message is 1, it means that system information other than SIB6/SIB7/SIB8 needs to be updated, and the UE obtains the updated system information in the next system information update cycle.
  • etwsAndCmasIndication in the short message is 1, it means that the network will send ETWS and/or CMAS notifications, and the UE will re-read SIB1 and SIB6/SIB7/SIB8 immediately after receiving the short message.
  • FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • a network device 201 and a terminal device 202 are included, and wireless communication can be performed between the network device 201 and the terminal device 202 .
  • the network including the network device 201 and the terminal device 202 may also be referred to as a non-terrestrial communication network (Non-Terrestrial Network, NTN), where the NTN refers to the communication between the terminal device and the satellite (also referred to as a network device).
  • NTN non-terrestrial communication network
  • the NTN refers to the communication between the terminal device and the satellite (also referred to as a network device).
  • NR refers to a new generation of wireless access network technology, which can be applied to future evolution networks, such as the future fifth generation mobile communication (the 5th Generation Mobile Communication, 5G) system.
  • 5G Fifth Generation Mobile Communication
  • the solutions in the embodiments of the present application can also be applied to other wireless communication networks such as Wireless Fidelity (WIFI) and Long Term Evolution (LTE), and the corresponding names can also be used in other wireless communication networks.
  • WIFI Wireless Fidelity
  • LTE Long Term Evolution
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.
  • 5G enhanced mobile ultra-broadband
  • URLLC low-latency highly reliable communication
  • mMTC massive machine-type communication
  • eMBB still aims at users' access to multimedia content, services and data, and its demand is growing rapidly.
  • Typical applications of URLLC include: industrial automation, electric power automation, telemedicine operations (surgery), traffic safety guarantee, etc.
  • the typical characteristics of mMTC include: high connection density, small data volume, delay-insensitive services, low cost and long service life of modules, etc.
  • 5G NR further increases the system bandwidth on the basis of 4G.
  • the maximum bandwidth supported by a single carrier is 100MHz; for frequency bands above 6GHz, the maximum bandwidth supported by a single carrier is 400MHz.
  • the bandwidth that terminal equipment needs to use is often very limited. If the terminal equipment is always detected and measured on the entire bandwidth, it will bring great challenges to the power consumption of the terminal equipment, which is not conducive to the power saving of the terminal equipment. Therefore, the concept of BWP is introduced in 5GNR, that is, a part of continuous bandwidth is allocated in the entire large-bandwidth carrier for terminal devices to transmit and receive data. The terminal equipment only needs to perform relevant operations within the bandwidth of the network configuration, so as to achieve the effect of energy saving of the terminal equipment.
  • the network device can configure one or more BWPs for the terminal device on this serving cell through the RRC reconfiguration message, and the maximum number of configurable BWPs is 4 .
  • the terminal device can only have one activated uplink BWP and one activated downlink BWP on the serving cell, and the terminal device can only send and receive data on the activated BWP.
  • the terminal equipment may have a need to adjust the BWP.
  • a terminal device when a terminal device has a large traffic volume and wants to obtain high-speed services, it is necessary to use a BWP with a large bandwidth to transmit data for the terminal device; when the traffic volume of the terminal device is small, a BWP with a small bandwidth can be used for data transfer.
  • FIG. 3 is a schematic diagram of BWP switching provided by the embodiment of the present application.
  • the traffic volume of the terminal equipment is relatively large, at this time, the BWP activated by the terminal equipment can be switched to a BWP with a large bandwidth , that is, BWP1 in Figure 3.
  • the service volume of the terminal device is small, and at this time, the BWP activated by the terminal device can be switched to a BWP with a small bandwidth, that is, BWP2 in FIG. 3 .
  • the terminal device switches the activated BWP to BWP3 as shown in FIG. 3 , and so on.
  • the BWP activated by the terminal device on the serving cell can be changed through BWP switching.
  • BWP switching methods There are four BWP switching methods currently supported in the standard:
  • the first type is PDCCH-based BWP handover.
  • the handover method is a BWP handover controlled by a network device.
  • the network device notifies the single terminal device of the target BWP to be handed over by sending the cell-radio network temporary identity (C-RNTI) scrambled PDCCH to the single terminal device.
  • C-RNTI cell-radio network temporary identity
  • the second type is BWP handover based on RRC reconfiguration.
  • This handover method is also a BWP handover controlled by a network device.
  • the terminal device By carrying the firstActiveDownlinkBWP-Id or firstActiveUplinkBWP-Id in the RRC reconfiguration message, the terminal device is instructed to switch the activated BWP to the BWP corresponding to the firstActiveDownlinkBWP-Id or the BWP corresponding to the firstActiveUplinkBWP-Id.
  • the third type is BWP handover based on timer timeout.
  • This switching method is an implicit BWP switching.
  • the network device configures a timer bwp-InactivityTimer for each serving cell of the terminal device. If the downlink BWP currently activated by the terminal device is a BWP other than the default BWP (default BWP) and the initial BWP (initial BWP), each time the terminal device receives a PDCCH indicating uplink or downlink scheduling of the terminal device on the currently activated BWP , or the terminal device receives a PDCCH indicating that the terminal device is scheduled for uplink or downlink on the currently activated BWP, both start or restart the timer bwp-InactivityTimer. When the timer bwp-InactivityTimer times out, the terminal device automatically switches to the default BWP or initial BWP, where both default BWP and initial BWP are determined by RRC configuration.
  • the fourth type is BWP handover caused by random access initialization.
  • the terminal device if the terminal device does not configure a random access opportunity on the currently activated uplink BWP, the terminal device will automatically switch the UL BWP to the initial UL BWP, and at the same time switch the DL BWP to the initial DL BWP.
  • FIG. 4 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • a cell served by a base station 40 includes a terminal device 41, a terminal device 42, and a terminal device 43, wherein the terminal device 41, the terminal device 42, and the terminal Devices 43 are all in a connected state.
  • the connected terminal devices in the cell will not be configured on the same BWP.
  • the BWP currently activated by the terminal device 41 is BWP1
  • the BWP currently activated by the terminal device 42 is BWP2
  • the BWP currently activated by the terminal device 43 is BWP3 .
  • each terminal device only supports one activated BWP, from the perspective of the base station 40, due to serving a large number of terminal devices, the base station 40 may need to use a larger frequency range to send and receive business data of multiple terminal devices in the cell , that is, the range of the frequency domain receiver to be turned on by the base station 40 is much larger than the transceiving bandwidth (for example, the activated BWP bandwidth) of a single terminal device.
  • the transceiving bandwidth for example, the activated BWP bandwidth
  • Opening a larger bandwidth for sending and receiving can provide higher system capacity and transmission efficiency, but it is not conducive to energy saving of the base station.
  • the base station can reduce the frequency range of data transmission and reception (such as shrinking to the initial BWP bandwidth), then the receiver channel (such as the radio frequency channel) can be reduced accordingly, and the power consumption of the base station can be saved.
  • the base station 40 needs to notify the affected terminal equipment (such as terminal equipment 41, terminal equipment 42 and terminal equipment 43 in the example in Figure 4) one by one, that is, the base station needs to use C-RNTI scrambling
  • the PDCCH instructs a single terminal device to perform BWP handover. On the one hand, this will bring a large signaling overhead.
  • due to the limitation of PDCCH resources it may not be possible to complete the BWP handover of all affected terminal equipment in a short time, which will bring a large time. Delay, the energy saving of the base station cannot be achieved quickly.
  • an embodiment of the present application provides a BWP switching solution, which implements BWP switching of terminal equipment in a cell under the premise of saving PDCCH resources.
  • the scheme of this application will be introduced below.
  • FIG. 5 is a schematic flow diagram of a handover method provided in an embodiment of the present application. The method is applied to a terminal device, and the terminal device is in a connected state. As shown in FIG. 5 , the method may include:
  • a cell includes multiple terminal devices in the connected state, and usually these multiple terminal devices in the connected state are configured on different BWPs. Since the network device needs to serve a large number of terminal devices, the network device needs to use a relatively large frequency domain range to transmit service data of multiple terminal devices in the cell, which is not conducive to energy saving of the network device.
  • the network device needs to reduce the frequency range of data transmission and reception to save energy, in order to keep the terminal device consistent with the network device, the network device needs to instruct the terminal device to perform BWP switching.
  • the terminal device may acquire indication information from the network device based on paging monitoring.
  • the paging monitoring is used for the transmission of data related to the paging process.
  • the paging monitoring may include the monitored PDCCH scrambled by the P-RNTI from the network device, and may also include the PDSCH received according to the paging downlink control information in the PDCCH.
  • the terminal device may acquire indication information by monitoring the PDCCH scrambled by the P-RNTI, or may acquire indication information by receiving the PDSCH.
  • the terminal device can monitor the PDCCH scrambled by P-RNTI on the paging search space to obtain indication information .
  • the indication information may be located in the paging downlink control information, for example, and the terminal device obtains the paging downlink control information by monitoring the PDCCH scrambled by P-RNTI on the paging search space, so that the paging downlink control information Get this instruction from .
  • the indication information may also be included in the paging message. Since the paging message is carried on the PDSCH, the terminal device can obtain the paging downlink control information by monitoring the PDCCH scrambled by the P-RNTI, and receive the PDSCH through the paging downlink control information, thereby obtaining the paging message carried on the PDSCH, and The indication information in the paging message is obtained.
  • the terminal device After acquiring the indication information, the terminal device switches the currently activated BWP of the terminal device to a certain target BWP according to the indication information. Since the network device sends indication information based on paging monitoring to instruct the terminal equipment to perform BWP handover, the indication information obtained by the terminal equipment in the connected state in the cell is the same, so the terminal equipment in the connected state in the cell is performing BWP handover After that, it will switch to the same BWP. However, after the network device sends the indication information based on the paging monitoring, it can narrow the frequency range of data sending and receiving. Wherein, the network device may narrow the range of the frequency domain for sending and receiving to be the same as the BWP of the terminal device after switching, or may be larger than the BWP of the terminal device after switching.
  • the terminal device obtains indication information based on paging monitoring, and switches the BWP of the terminal device according to the indication information, transmits the indication information through the transmission of paging process-related data during paging monitoring, and performs paging on the air interface.
  • the paging process-related data of terminal devices with the same paging opportunity are aggregated into one piece and transmitted to the terminal device through the paging channel.
  • the network device when the network device wants to reduce the frequency range of data transmission and reception to save energy, it only needs to transmit the data related to the paging process by sending the PDCCH once, and it can instruct all the terminal devices in the cell to complete the BWP handover to ensure the communication with the network device. In this way, PDCCH resources can be saved and signaling overhead can be reduced.
  • the network device When the network device needs to reduce the frequency range of data transmission and reception to save energy, it needs to instruct the terminal device to perform BWP switching, that is, instruct the terminal device to switch the currently activated BWP to another BWP.
  • the network device sends indication information based on paging monitoring, and the paging monitoring includes the monitored PDCCH scrambled by the P-RNTI from the network device, or the PDSCH received according to the paging DCI in the PDCCH.
  • the indication information may be located in the pagingDCI.
  • the terminal device obtains the paging DCI by monitoring the PDCCH, so as to obtain the indication information.
  • there may or may not be a paging message.
  • the terminal device can obtain the indication information directly according to the paging DCI after obtaining the paging DCI.
  • the paging DCI is carried in the PDCCH.
  • the indication information can be located in the reserved bits in the paging DCI format 1_0 of the paging DCI.
  • Another possible implementation The way is that the indication information can also be located in the reserved bits in the paging DCI short message.
  • paging DCI format 1_0 For paging DCI format 1_0, the following information is transmitted through paging DCI format 1_0, and the CRC is scrambled by P-RNTI:
  • Short message - 8 bits If only paging scheduling information is carried, this bit field is reserved.
  • bit If only short messages are carried, this bit field is reserved, where, To control the size of resource set CORESET 0.
  • Time domain resource allocation - 4 bits. If only short messages are carried, this bit field is reserved.
  • the indication information may be located in the reserved bits in the paging DCI format 1_0.
  • Short messages for paging DCI including:
  • System Information Modification If set to 1: Indicates Broadcast Control Channel (BCCH for short) modification except SIB6, SIB7 and SIB8.
  • nrofPDCCH-MonitoringOccasionPerSSB-InPO Indicates that the UE may stop listening to the PDCCH occasion for paging in this paging occasion.
  • the indication information may be located in the reserved bits in the short message of the paging DCI.
  • the situation that the indication information is located in the pagingDCI when paging and monitoring the PDCCH including the monitored P-RNTI is introduced.
  • the paging monitoring may also include the PDSCH received according to the paging DCI in the PDCCH, and the indication information may be located in the paging message carried on the PDSCH.
  • the terminal device can obtain the paging DCI by monitoring the PDCCH, schedule the corresponding PDSCH according to the paging DCI, and obtain the paging message carried on the PDSCH, thereby obtaining the indication information.
  • the application scenario corresponding to the paging message is a notification of system information update initiated by a network device.
  • the terminal device schedules the PDSCH through the paging DCI, and obtains the paging message carried on the PDSCH, so as to obtain the indication information in the paging message.
  • 1-bit information may be extended in the paging RRC message as the indication information to instruct the terminal device to perform BWP switching.
  • the terminal device After acquiring the indication information, the terminal device switches the BWP according to the indication information, where the indication information may include at least one of a BWP switching indication and an identifier of the first BWP.
  • the indication information may only include the BWP switching indication, the indication information may only include the identifier of the first BWP, or the indication information may also include the BWP switching indication and the identifier of the first BWP.
  • the terminal device will perform a corresponding BWP switching operation according to the indication information, which will be introduced respectively below.
  • the first BWP is introduced.
  • the first BWP may be an initial BWP (initial BWP), or a BWP for network energy saving.
  • the initial BWP is pre-configured. If the network device instructs the terminal device to switch the current BWP to the initial BWP through the indication information, the network device may also reduce the frequency range of data transmission and reception after sending the indication information based on paging monitoring. Wherein, the network device may reduce the frequency domain range of data transceiving to the initial BWP, or may reduce the frequency domain range of data transceiving to a bandwidth slightly wider than the initial BWP.
  • the network energy saving BWP is the BWP configured on the network device.
  • the network device may broadcast the system information to configure the network energy saving BWP, and the terminal device acquires the network energy saving BWP by acquiring the broadcasted system information.
  • the network device may configure the network energy saving BWP through an RRC message, and the terminal device obtains the network energy saving BWP by obtaining the RRC message. If the network device instructs the terminal device to switch the current BWP to the network energy-saving BWP through the indication information, the network device may also reduce the frequency range of data transmission and reception after sending the indication information based on paging monitoring. Wherein, the network device may reduce the frequency domain range of data transceiving to the network energy saving BWP, or may reduce the frequency domain range of data transmitting and receiving to a bandwidth slightly wider than the network energy saving BWP.
  • the BWP switching instruction can be used to instruct the terminal device to receive system information in the next system information update period, and switch the current BWP to the first BWP according to the system information, wherein the system information includes the first Logo of BWP.
  • the indication information when the indication information is in the paging message, 1-bit information can be extended in the paging message as the BWP switching indication, and the terminal device obtains the BWP switching indication by obtaining the paging message; for example, when the indication information is in the paging DCI format 1_0, the reserved bits in paging DCI format 1_0 may include the BWP switching indication, and the terminal device obtains the BWP switching indication by obtaining the reserved bits in paging DCI format 1_0; for example, when the indication information is located in When the reserved bits in the short message in the paging DCI, the reserved bits in the short message in the paging DCI may include the BWP switching indication, and the terminal device obtains the BWP by obtaining the reserved bits in the short message in the paging DCI Toggle indication.
  • BWP switching may be performed according to the BWP switching instruction.
  • Figure 6 is a schematic diagram of the BWP switching time provided by the embodiment of the present application.
  • the terminal device obtains the indication information at time A within the SI update period n, and the indication information indicates that the terminal equipment will receive in the next system information update period system information, and switch the current BWP to the first BWP according to the system information, wherein the system information includes the identifier of the first BWP.
  • the terminal device receives the system information at the beginning of the next SI update period, that is, the SI update period n+1 (that is, time B in the example in FIG. 8 ), obtains the identifier of the first BWP in SIB1, and switches the currently activated BWP to onto the first BWP.
  • the first BWP is the initial BWP
  • the terminal device switches the current BWP to the initial BWP
  • the terminal device switches the current BWP to the network energy saving BWP to the network energy saving BWP.
  • BWP switching is performed, so that the indication information does not need to indicate the updated BWP, and the bits to be used in the indication information are reduced.
  • the BWP switching indication may also be used to instruct the terminal device to switch the current BWP to the first BWP. After acquiring the BWP switching instruction, the terminal device can switch the current BWP to the first BWP according to the BWP switching instruction.
  • the indication information when the indication information is in the paging message, 1-bit information may be extended in the RRC message of the paging message as the BWP switching indication, and the BWP switching indication is used to indicate switching the current BWP to the first BWP.
  • the terminal device After acquiring the BWP switching instruction, the terminal device switches the current BWP to the first BWP by default according to the BWP switching instruction.
  • the reserved bits in the paging DCI format 1_0 may include a BWP switching indication for instructing to switch the current BWP to the first BWP.
  • the terminal device obtains the BWP switching instruction by obtaining the reserved bits in the paging DCI format 1_0, according to the BWP switching instruction, the current BWP is switched to the first BWP by default.
  • the reserved bits in the short message in the paging DCI may include a BWP switching indication for instructing to switch the current BWP to the first BWP.
  • the terminal device obtains the BWP switching instruction by obtaining the reserved bit in the short message in the paging DCI, according to the BWP switching instruction, the current BWP is switched to the first BWP by default.
  • the terminal device switches the current BWP to the initial BWP according to the BWP switching instruction; when the first BWP is the network energy saving BWP, the terminal device switches the current BWP to the network energy saving BWP according to the BWP switching instruction. BWP.
  • the identifier of the first BWP is used to instruct the terminal device to switch the current BWP to the first BWP.
  • 1-bit information may be extended in the RRC message of the paging message as the identifier of the first BWP, and the identifier of the first BWP is used to indicate that the current BWP is switched to the first BWP.
  • the terminal device After acquiring the identifier of the first BWP, the terminal device switches the currently activated BWP to the first BWP according to the identifier of the first BWP.
  • the first BWP may be an initial BWP, or a BWP for network energy saving.
  • the indication information includes the identification of the initial BWP, which is used to indicate that the current BWP of the terminal device is switched to the initial BWP; when the first BWP is the network energy saving BWP, the indication information includes the network energy saving BWP The identifier of is used to indicate to switch the current BWP of the terminal device to the network energy-saving BWP.
  • the reserved bits in the paging DCI format 1_0 may include the identifier of the first BWP, which is used to indicate that the BWP is switched to the first BWP.
  • the terminal device obtains the identifier of the first BWP by obtaining the reserved bits in the paging DCI format 1_0, it switches the currently activated BWP to the first BWP according to the identifier of the first BWP.
  • the first BWP may be an initial BWP, or a BWP for network energy saving.
  • the indication information includes the identifier of the initial BWP, which is used to indicate that the BWP of the terminal device is switched to the initial BWP; when the first BWP is the network energy saving BWP, the indication information includes the identity of the network energy saving BWP The identifier is used to indicate to switch the BWP of the terminal device to the network energy-saving BWP.
  • the reserved bits in the short message in the paging DCI may include the identifier of the first BWP, which is used to indicate that the BWP is switched to the first BWP superior.
  • the terminal device acquires the identifier of the first BWP by acquiring the reserved bits in the short message in the paging DCI, it switches the currently activated BWP to the first BWP according to the identifier of the first BWP.
  • the first BWP may be an initial BWP, or a BWP for network energy saving.
  • the indication information includes the identifier of the initial BWP, which is used to indicate that the BWP of the terminal device is switched to the initial BWP; when the first BWP is the network energy saving BWP, the indication information includes the identity of the network energy saving BWP The identifier is used to indicate to switch the BWP of the terminal device to the network energy-saving BWP.
  • the instruction information includes the BWP switching instruction and the identifier of the first BWP
  • the BWP switching instruction and the identifier of the first BWP are used to instruct the terminal device to switch the current BWP to the first BWP.
  • the BWP switching instruction and the identifier of the first BWP may be located in the paging message, and are used to indicate switching the current BWP to the first BWP.
  • the terminal device After acquiring the BWP switching instruction and the first BWP identifier, the terminal device switches the currently activated BWP to the first BWP according to the BWP switching instruction and the first BWP identifier.
  • the first BWP may be an initial BWP, or a BWP for network energy saving.
  • the indication information includes the BWP switching indication and the identification of the initial BWP, which are used to instruct the current BWP of the terminal device to be switched to the initial BWP;
  • the indication information includes It includes a BWP switching instruction and an identifier of the network energy saving BWP, and is used to indicate switching the current BWP of the terminal device to the network energy saving BWP.
  • the reserved bits in paging DCI format 1_0 may include the BWP switching indication and the first BWP identifier, which are used to indicate that the current BWP is switched to the first BWP on BWP.
  • the terminal device After acquiring the BWP switching instruction and the first BWP identifier, the terminal device switches the currently activated BWP to the first BWP according to the BWP switching instruction and the first BWP identifier.
  • the first BWP may be the initial BWP, or the BWP for network energy saving.
  • the indication information includes the BWP switching indication and the identification of the initial BWP, which are used to instruct the current BWP of the terminal device to be switched to the initial BWP;
  • the indication information includes It includes a BWP switching instruction and an identifier of the network energy saving BWP, and is used to indicate switching the current BWP of the terminal device to the network energy saving BWP.
  • the reserved bits in the short message in the paging DCI may include a BWP switching indication and an identifier of the first BWP, which are used to indicate that the current BWP is switched onto the first BWP.
  • the terminal device After acquiring the BWP switching instruction and the first BWP identifier, the terminal device switches the currently activated BWP to the first BWP according to the BWP switching instruction and the first BWP identifier.
  • the first BWP may be an initial BWP, or a BWP for network energy saving.
  • the indication information includes the BWP switching indication and the identification of the initial BWP, which are used to instruct the current BWP of the terminal device to be switched to the initial BWP;
  • the indication information includes It includes a BWP switching instruction and an identifier of the network energy saving BWP, and is used to indicate switching the current BWP of the terminal device to the network energy saving BWP.
  • the indication information is used to indicate that the current BWP is switched to the first BWP
  • the terminal device acquires the indication information
  • the current BWP of the terminal device may be switched to the first BWP according to the indication information.
  • the terminal device acquires the indication information
  • it switches the current BWP of the terminal device to the first BWP at the first moment according to the indication information.
  • FIG. 7 is the second schematic diagram of the BWP switching time provided by the embodiment of the present application. As shown in Figure 7, at time A the terminal device obtains the instruction information, and the instruction information indicates to perform BWP switching, so that at time A the terminal device is currently activated The BWP is switched to the first BWP, wherein the time A shown in FIG. 7 is the first time, and in the embodiment of the present application, the first time is the time when the indication information is acquired.
  • BWP switching is performed at the moment when the indication information is acquired, which can realize fast BWP switching and reduce time delay.
  • FIG. 8 is a third schematic diagram of BWP switching time provided by the embodiment of the present application.
  • the terminal device acquires indication information, and the indication information indicates BWP switching.
  • the terminal device waits until the start of the next system information update period (ie, SI update period n+1) to perform BWP switching, and the start time of the next system information update period is time B in the example shown in FIG. 8 .
  • time B is the first time.
  • the solution illustrated in FIG. 8 can enable all terminal devices in the cell to perform BWP handover simultaneously, so as to be consistent with network devices.
  • FIG. 9 is a schematic flowchart of a handover method provided in an embodiment of the present application. The method is applied to a network device. As shown in FIG. 9 , the method includes:
  • S91 Send indication information based on paging monitoring, where the indication information is used to instruct to switch BWP of the terminal device, and the terminal device is in a connected state.
  • the paging monitoring includes at least one of the following:
  • the paging monitoring includes the sent P-RNTI scrambled PDCCH;
  • the indication information is located in the paging downlink control information.
  • the indication information is located in a reserved bit in the paging downlink control information format 1_0 in the paging downlink control information; or,
  • the indication information is located in a reserved bit in the short message of the paging downlink control information.
  • the paging monitoring includes a PDSCH sent according to paging downlink control information in the PDCCH;
  • the indication information is located in the paging message carried on the PDSCH.
  • the indication information includes at least one of the following:
  • the indication information includes the BWP switching indication; the BWP switching indication is used to instruct the terminal device to receive system information in the next system information update period, and update the current The BWP is switched to the first BWP, wherein the system information includes the identifier of the first BWP.
  • the indication information includes the BWP switching indication; the BWP switching indication is used to instruct the terminal device to switch the current BWP to the first BWP.
  • the indication information includes an identifier of the first BWP; the identifier of the first BWP is used to instruct the terminal device to switch the current BWP to the first BWP.
  • the indication information includes the BWP switching indication and the identifier of the first BWP; the BWP switching indication and the identifier of the first BWP are used to indicate that the terminal device will The BWP is switched to the first BWP.
  • the indication information is used to instruct the terminal device to switch the current BWP to the first BWP at the first moment.
  • the first moment is any one of the following:
  • the first BWP is any one of the following:
  • a network energy-saving BWP where the network energy-saving BWP is configured for a network device.
  • the network energy saving BWP is configured by the network device through system information; or,
  • the network energy saving BWP is configured by the network device through a radio resource control RRC message.
  • the method illustrated in FIG. 9 is an execution method at the network device side, and the specific implementation solution has been introduced in the foregoing embodiments, and will not be repeated here.
  • the terminal device obtains indication information based on paging monitoring, and switches the BWP of the terminal device according to the indication information, transmits the indication information through the transmission of paging process-related data during paging monitoring, and performs paging on the air interface.
  • the paging process-related data of terminal devices with the same paging opportunity are aggregated into one piece and transmitted to the terminal device through the paging channel.
  • the network device when the network device wants to reduce the frequency range of data transmission and reception to save energy, it only needs to transmit the data related to the paging process by sending the PDCCH once, and it can instruct all the terminal devices in the cell to complete the BWP handover to ensure the communication with the network device. In this way, PDCCH resources can be saved and signaling overhead can be reduced.
  • the BWP switching can be performed immediately when the indication information is obtained, so that the effect of fast BWP switching can be achieved, and the BWP switching can be performed at the beginning of the next system information update period, so that Make all terminal devices perform BWP switching at the same time, keeping consistent with the network device;
  • the instruction information indicates to switch BWP
  • the updated BWP can be obtained at the beginning of the next system information update period, and switched to the updated BWP, thereby reducing the Indicates the bits to use in the message.
  • FIG. 10 is a schematic structural diagram of a switching device provided in an embodiment of the present application. As shown in FIG. 10, the switching device 100 includes:
  • An acquisition module 101 configured to acquire indication information based on paging monitoring
  • the switching module 102 is configured to switch the BWP of the terminal device according to the indication information, and the terminal device is in a connected state.
  • the paging monitoring includes at least one of the following:
  • the physical downlink shared channel PDSCH received according to the paging downlink control information in the PDCCH.
  • the paging monitoring includes monitoring a PDCCH scrambled by a P-RNTI from a network device;
  • the indication information is located in the paging downlink control information.
  • the indication information is located in a reserved bit in the paging downlink control information format 1_0 in the paging downlink control information; or,
  • the indication information is located in a reserved bit in the short message of the paging downlink control information.
  • the paging monitoring includes a PDSCH received according to paging downlink control information in the PDCCH;
  • the indication information is located in the paging message carried on the PDSCH.
  • the indication information includes at least one of the following:
  • the indication information includes the BWP switching indication; the BWP switching indication is used to indicate receiving system information in the next system information update period, and switching the current BWP to the second system information according to the system information.
  • the indication information includes the BWP switching indication; the BWP switching indication is used to indicate switching the current BWP to the first BWP.
  • the indication information includes an identifier of the first BWP; the identifier of the first BWP is used to indicate to switch the current BWP to the first BWP.
  • the instruction information includes the BWP switching instruction and the first BWP identifier; the BWP switching instruction and the first BWP identifier are used to indicate that the current BWP is switched to the Describe the first BWP.
  • the indication information is used to indicate to switch the current BWP to the first BWP at the first moment.
  • the first moment is any one of the following:
  • the first BWP is any one of the following:
  • a network energy-saving BWP where the network energy-saving BWP is configured for a network device.
  • the network energy saving BWP is configured by the network device through system information; or,
  • the network energy saving BWP is configured by the network device through a radio resource control RRC message.
  • the switching device provided in the embodiment of the present application can execute the technical solutions shown in the above method embodiments, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 11 is a schematic structural diagram of a switching device provided in an embodiment of the present application. As shown in FIG. 11, the switching device 110 includes:
  • the sending module 111 is configured to send indication information based on paging monitoring, where the indication information is used to instruct to switch the BWP of the terminal device, and the terminal device is in a connected state.
  • the paging monitoring includes at least one of the following:
  • the paging monitoring includes the sent P-RNTI scrambled PDCCH;
  • the indication information is located in the paging downlink control information.
  • the indication information is located in a reserved bit in the paging downlink control information format 1_0 in the paging downlink control information; or,
  • the indication information is located in a reserved bit in the short message of the paging downlink control information.
  • the paging monitoring includes a PDSCH sent according to paging downlink control information in the PDCCH;
  • the indication information is located in the paging message carried on the PDSCH.
  • the indication information includes at least one of the following:
  • the indication information includes the BWP switching indication; the BWP switching indication is used to instruct the terminal device to receive system information in the next system information update period, and update the current The BWP is switched to the first BWP, wherein the system information includes the identifier of the first BWP.
  • the indication information includes the BWP switching indication; the BWP switching indication is used to instruct the terminal device to switch the current BWP to the first BWP.
  • the indication information includes an identifier of the first BWP; the identifier of the first BWP is used to instruct the terminal device to switch the current BWP to the first BWP.
  • the indication information includes the BWP switching indication and the identifier of the first BWP; the BWP switching indication and the identifier of the first BWP are used to indicate that the terminal device will The BWP is switched to the first BWP.
  • the indication information is used to instruct the terminal device to switch the current BWP to the first BWP at the first moment.
  • the first moment is any one of the following:
  • the first BWP is any one of the following:
  • a network energy-saving BWP where the network energy-saving BWP is configured for a network device.
  • the network energy saving BWP is configured by the network device through system information; or,
  • the network energy saving BWP is configured by the network device through a radio resource control RRC message.
  • the switching device provided in the embodiment of the present application can execute the technical solutions shown in the above method embodiments, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 12 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • a terminal device 120 may include: a transceiver 121 , a memory 122 , and a processor 123 .
  • the transceiver 121 may include: a transmitter and/or a receiver.
  • the transmitter may also be called a transmitter, a transmitter, a sending port, or a sending interface, and similar descriptions
  • the receiver may also be called a receiver, a receiver, a receiving port, or a receiving interface, or similar descriptions.
  • the transceiver 121 , the memory 122 , and the processor 123 are connected to each other through a bus 124 .
  • the memory 122 is used to store program instructions
  • the processor 123 is configured to execute the program instructions stored in the memory, so as to enable the terminal device 120 to execute any one of the handover methods shown above.
  • the receiver of the transceiver 121 can be used to perform the receiving function of the terminal device in the above handover method.
  • FIG. 13 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the network device 130 may include: a transceiver 131 , a memory 132 , and a processor 133 .
  • the transceiver 131 may include: a transmitter and/or a receiver.
  • the transmitter may also be called a transmitter, a transmitter, a sending port, or a sending interface, and similar descriptions
  • the receiver may also be called a receiver, a receiver, a receiving port, or a receiving interface, or similar descriptions.
  • the transceiver 131 , the memory 132 , and the processor 133 are connected to each other through a bus 134 .
  • Memory 132 is used to store program instructions
  • the processor 133 is configured to execute the program instructions stored in the memory, so as to enable the terminal device 130 to execute any one of the handover methods shown above.
  • the receiver of the transceiver 131 can be used to perform the receiving function of the terminal device in the above handover method.
  • An embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions are used to implement the foregoing switching method when executed by a processor.
  • An embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions are used to implement the foregoing switching method when executed by a processor.
  • the embodiment of the present application may further provide a computer program product, the computer program product may be executed by a processor, and when the computer program product is executed, any of the switching methods performed by the terminal device or network device shown above may be implemented.
  • the communication device, computer-readable storage medium, and computer program product in the embodiments of the present application can execute the handover method performed by the above-mentioned terminal device and network device.
  • the disclosed system, device and method can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the aforementioned computer program can be stored in a computer-readable storage medium.
  • the computer program When the computer program is executed by the processor, it implements the steps of the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

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Abstract

本申请实施例提供一种切换方法及装置，该方法应用于终端设备，终端设备处于连接态，该方法包括：基于寻呼监听获取指示信息，并根据指示信息切换终端设备的BWP，通过寻呼监听中寻呼过程相关数据的传输来传输指示信息，在空口进行寻呼过程相关数据的传输时，具有相同寻呼时机的终端设备的寻呼过程相关数据被汇总成一条，并通过寻呼信道传输给终端设备。因此，当网络设备要缩小数据收发的频域范围以节能时，只需要通过发送一次PDCCH进行寻呼过程相关数据的传输，就能够指示小区内所有的终端设备完成BWP切换，以保证与网络设备的一致，从而能够节省PDCCH资源，减小信令开销。

Description

切换方法及装置 技术领域
本申请涉及通信领域，尤其涉及一种切换方法及装置。
背景技术
为达到终端设备节能的效果，在5G新空口(New Radio，简称NR)中引入了带宽部分(Bandwidth Part，简称BWP)，即在整个大带宽的载波内划分出一部分连续的带宽给终端设备，终端只在这部分连续的带宽内进行数据收发。
通常，为了提高系统容量，小区内的连接态的终端设备不会被配置在相同的BWP上。由于基站要服务大量终端设备，因此基站需要使用更大的频域范围对小区内多个终端设备的业务数据进行收发，功率消耗较大。当基站需要调整数据收发的频域范围以节能时，为了使终端设备和基站保持一致，需要对终端设备进行BWP切换。
然而，目前的BWP切换方案，基站需要逐一通知小区内需要进行BWP切换的终端设备，导致信令开销较大。
发明内容
本申请实施例提供一种切换方法及装置，以减小目前基站需要节能时的BWP切换的信令开销。
第一方面，本申请实施例提供一种切换方法，应用于终端设备，所述终端设备处于连接态，所述方法包括：
基于寻呼监听获取指示信息；
根据所述指示信息，切换所述终端设备的带宽部分BWP。
第二方面，本申请实施例提供一种切换方法，应用于网络设备，所述方法包括：
基于寻呼监听发送指示信息，所述指示信息用于指示切换终端设备的BWP，所述终端设备处于连接态。
第三方面，本申请实施例提供一种切换装置，包括：
获取模块，用于基于寻呼监听获取指示信息；
切换模块，用于根据所述指示信息，切换终端设备的BWP，所述终端设备处于连接态。
第四方面，本申请实施例提供一种切换装置，包括：
发送模块，用于基于寻呼监听发送指示信息，所述指示信息用于指示切换终端设备的BWP，所述终端设备处于连接态。
第五方面，本申请实施例提供一种终端设备，包括：收发器、处理器、存储器；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如第一方面任一项所述的切换方法。
第六方面，本申请实施例提供一种网络设备，包括：收发器、处理器、存储器；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如第二方面任一项所述的切换方法。
第七方面，本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现如第一方面或第二方面任一项所述的切换方法。
第八方面，本申请实施例提供一种计算机程序产品，包括计算机程序，所述计算机程序被处理器执行时实现如第一方面或第二方面任一项所述的切换方法。
本申请实施例提供的切换方法及装置，终端设备基于寻呼监听获取指示信息，并根据指示信息切换终端设备的BWP。通过寻呼监听中寻呼过程相关数据的传输来传输指示信息，在空口进行寻呼过程相关数据的传输时，具有相同寻呼时机的终端设备的寻呼过程相关数据被汇总成一条，并通过寻呼信道传输给终端设备。因此，当网络设备要缩小数据收发的频域范围以节能时，只需 要通过发送一次PDCCH进行寻呼过程相关数据的传输，就能够指示小区内所有的终端设备完成BWP切换，以保证与网络设备的一致，从而能够节省PDCCH资源，减小信令开销。
附图说明
图1为本申请实施例提供的系统信息更新示意图；
图2为本申请实施例提供的应用场景的示意图；
图3为本申请实施例提供的BWP切换示意图；
图4为本申请实施例提供的应用场景示意图；
图5为本申请实施例提供的切换方法的流程示意图；
图6为本申请实施例提供的BWP切换时刻示意图一；
图7为本申请实施例提供的BWP切换时刻示意图二；
图8为本申请实施例提供的BWP切换时刻示意图三；
图9为本申请实施例提供的切换方法的流程示意图；
图10为本申请实施例提供的切换装置的结构示意图；
图11为本申请实施例提供的切换装置的结构示意图；
图12为本申请实施例提供的终端设备的结构示意图；
图13为本申请实施例提供的网络设备的结构示意图。
具体实施方式
为了便于理解，首先对本申请涉及的概念进行解释说明。
终端设备：可以为包含无线收发功能、且可以与网络设备配合为用户提供通讯服务的设备。具体地，终端设备可以指用户设备(User Equipment，UE)、接入终端、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。例如，终端设备可以是蜂窝电话、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网络或5G之后的网络中的终端设备等。
网络设备：网络设备可以是用于与终端设备进行通信的设备，例如，可以是全球移动通信系统(Global System for Mobile Communication，GSM)或码分多址(Code Division Multiple Access，CDMA)通信系统中的基站(Base Transceiver Station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，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)，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络或5G之后的网络中的网络侧设备或未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的网络设备等。
本申请实施例中涉及的网络设备也可称为无线接入网(Radio Access Network，RAN)设备。RAN设备与终端设备连接，用于接收终端设备的数据并发送给核心网设备。RAN设备在不同通信系统中对应不同的设备，例如，在2G系统中对应基站与基站控制器，在3G系统中对应基站与无线网络控制器(Radio Network Controller，RNC)，在4G系统中对应演进型基站(Evolutional Node B，eNB)，在5G系统中对应5G系统，如新无线(New Radio，NR)中的接入网设备(例如gNB，集中单元CU，分布式单元DU)。
物理下行控制信道：physical downlink control channel，简称PDCCH，是一组物理资源粒子的集合，承载上下行控制信息。PDCCH主要承载着物理上行共享信道(physical uplink shared channel，简称PUSCH)和物理下行共享信道(physical downlink shared channel，简称PDSCH)信道控制信息。在一个子帧内，可以有多个PDCCH。UE首先要解调PDCCH中的下行控制信息(downlink control information，简称DCI)，才能够在相应的资源位置上解调对应的PDSCH，包括广播消息、寻呼消息等。
无线网络临时标识：Radio Network Tempory Identity，简称RNTI。网络设备向终端设备发送RNTI加扰的下行控制信道，终端设备可以基于RNTI加扰的下行控制信道中的指示信息接收下行数据信道，其中，不同的RNTI可以对应不同的下行数据信道。通信系统中存在多种RNTI，本申请实施例中主要涉及寻呼RNTI(paging RNTI，简称P-RNTI)，P-RNTI用于标识寻呼消息的传输，其中，寻呼的P-RNTI是所有终端设备共用的。终端设备可以通过P-RNTI加扰的PDCCH确 定P-RNTI对应的PDSCH占用的资源，从而获取承载在PDSCH上的寻呼消息。
RRC状态：终端设备和网络设备之间通过无线信道相互通信，彼此交换信息，因此终端设备和网络设备之间需要一种控制机制来交换信息并达成一致，这种控制机制就是RRC。在LTE中，RRC状态包括RRC空闲态(RRC_IDLE)和RRC连接态(RRC_CONNECTED)。在5G NR中，除了RRC空闲态和RRC连接态外，还引入了RRC非激活态(RRC_INACTIVE)。在RRC非激活态下，终端设备与网络设备之间处于非连接状态，但是仍部分保留终端设备的上下文，同时在RRC非激活态下，终端设备可通过寻呼消息等快速切换到RRC连接态。
RRC_IDLE：移动性为基于UE的小区选择重选，寻呼由CN发起，寻呼区域由CN配置。基站侧不存在UE AS上下文。不存在RRC连接。
RRC_CONNECTED：存在RRC连接，基站和UE存在UE AS上下文。网络侧知道UE的位置是具体小区级别的。移动性是网络侧控制的移动性。UE和基站之间可以传输单播数据。
RRC_INACTIVE：移动性为基于UE的小区选择重选，存在CN-NR之间的连接，UE AS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UE的位置是基于RAN的寻呼区域级别的。
寻呼：NR系统的寻呼主要有3种应用场景，分别是核心网发起的寻呼、gNB发起的寻呼和gNB发起的系统信息更新的通知。核心网发起的寻呼主要是针对处于RRC_IDLE状态的UE，gNB发起的寻呼主要是针对处于RRC_INACTIVE状态的UE，而gNB发起的系统信息更新的通知则可能针对任意一个RRC状态的UE。
寻呼消息是承载在PDSCH上的，UE在接收寻呼消息之前，首先要监听PDCCH，当PDCCH上携带有P-RNTI时，UE从PDCCH上获取解调PDSCH的信息，并根据PDCCH上指示的解调PDSCH的相关参数去接收PDSCH，从而获取承载在PDSCH上的寻呼消息。
下行控制信息：DCI，可以用于指示或传输下行调度信息，例如可以调度用于承载寻呼消息的PDSCH，调度信息可以包括频域资源、时域资源、功率控制命令或调制编码方式等。本申请实施例中，DCI可以为paging DCI，paging DCI可以表示用于调度承载寻呼消息的PDSCH的控制信息，或用于指示该控制信息只携带短消息的控制信息，或用于指示该控制信息只携带调度信息，或用于指示该控制信息携带短消息和调度信息的控制信息，或用于指示短消息的控制信息。paging DCI可以是使用P-RNTI加扰的。
系统信息更新周期：在NR系统中，系统信息(System Information，简称SI)包括主信息块(MIB，Master Information Block)以及一系列的系统信息块(SIB，System Information Block)。当小区的一些系统参数发生变更时，例如SIB1中的部分参数发生变更时，UE可以通过接收P-RNTI的DCI获得系统信息变更指示。除了地震和海啸预警系统(Earthquake and Tsunami Warning System，简称ETWS)/商用移动预警系统(Commercial Mobile Alert System，简称CMAS)通知，系统信息只能在特定的无线帧进行变更，将变更的时间称作更新周期。在同一个更新周期内，将会根据其调度发送相同内容的系统信息。系统信息更新周期在系统信息中进行配置。
当网络设备改变了系统信息之后，将会在更新周期通知UE，即只有在下一个更新周期，网络设备才会传输更新后的系统信息。UE一旦收到系统信息变更指示，UE将从下一个更新周期内开始获取新的系统信息，而在UE获取到新的系统信息之前，将一直使用之前的系统信息进行传输。
图1为本申请实施例提供的系统信息更新示意图，如图1所示，当网络设备要更新系统信息时，网络设备先在第n个系统信息更新周期内重复发送系统信息变更指示，系统信息变更指示用于指示UE需要进行系统信息变更。然后，网络设备在第n+1个系统信息更新周期内重复发送变更的系统信息。
系统信息变更周期的边界定义为满足系统帧号(System Frame Number，简称SFN)SFN mod＝0的SFN，其中，m为一个系统信息更新周期包含的SFN个数。
m＝modificationPeriodCoeff*defaultPagingCycle，其中，modificationPeriodCoeff为系统信息更新周期系数，defaultPagingCycle为默认寻呼中周期。modificationPeriodCoeff和defaultPagingCycle这两个参数均由网络设备广播确定。
系统信息更新周期适用于除了SIB6,SIB7,SIB8，以及定位辅助数据以外的系统信息的更新。在NR中，Paging DCI中的短消息(short message)用于通知系统信息更新指示，paging DCI所在的PDCCH通过P-RNTI加扰。
如果short message中的systemInfoModification取值为1，表示对于除了SIB6/SIB7/SIB8之外的其他系统信息要进行更新，则UE在下一个系统信息更新周期获取更新后的系统信息。
如果short message中的etwsAndCmasIndication取值为1，表示网络要发送ETWS和/或CMAS通知，则UE在收到short message之后立即重新读取SIB1，以及SIB6/SIB7/SIB8。
下面，结合图2，对本申请中的切换方法所适用的场景进行说明。
图2为本申请实施例提供的应用场景的示意图。请参见图2，包括网络设备201和终端设备202，网络设备201和终端设备202之间可以进行无线通信。
其中，包括网络设备201和终端设备202的网络还可以称为非地面通信网络(Non-Terrestrial Network，NTN)，其中，NTN是指终端设备和卫星(还可以称为网络设备)之间的通信网络。
可以理解的是，本申请实施例的技术方案可应用于NR通信技术中，NR是指新一代无线接入网络技术，可以应用在未来演进网络，如未来第五代移动通信(the 5th Generation Mobile Communication，5G)系统中。本申请实施例中的方案还可以应用于无线保真(Wireless Fidelity，WIFI)和长期演进(Long Term Evolution，LTE)等其他无线通信网络中，相应的名称也可以用其他无线通信网络中的对应功能的名称进行替代。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
下面对本申请的相关技术背景进行说明。
当前，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，5G应运而生。5G的主要应用场景为：增强移动超宽带(eMBB)、低时延高可靠通信(URLLC)、大规模机器类通信(mMTC)。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，便如室内，市区，农村等，其能力和需求的差别也比较大。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。
为了能够提供更大的数据传输速率，提升用户体验，5G NR在4G基础上进一步增大了系统带宽。在5GNR中，对于6GHz以下频段，单载波支持的最大带宽为100MHz；对于6GHz以上频段，单载波支持的最大带宽为400MHz。
对于一个大的载波带宽，比如100MHz，终端设备需要使用的带宽往往非常有限。如果让终端设备始终在整个带宽上进行检测和测量，对终端设备的功耗将带来极大的挑战，不利于终端设备省电。因此，在5GNR中引入了BWP的概念，即在整个大带宽的载波内划分出一部分连续的带宽给终端设备进行数据收发。终端设备只需要在网络配置的这部分带宽内进行相关操作，从而起到终端设备节能的效果。
基于5G NR Rel-15标准规定，对于终端设备的每个服务小区，网络设备通过RRC重配置消息可以为终端设备在这个服务小区上配置一个或者多个BWP，可配置的最大BWP数目为4个。在每个时刻，终端设备在这个服务小区上只能有1个激活的上行BWP和1个激活的下行BWP，终端设备只能在激活的BWP上进行数据收发。考虑到终端设备业务的多样性以及不同业务特性的差异性等因素，终端设备可能会有调整BWP的需求。比如，当终端设备业务量较大希望获得高速率服务时，需要使用一个大带宽的BWP为这个终端设备进行数据传输；当终端设备业务量较小时，可以使用一个小带宽的BWP为这个终端设备进行数据传输。
图3为本申请实施例提供的BWP切换示意图，如图3所示，在0-t1时段，终端设备的业务量较大，此时可以将终端设备激活的BWP切换到一个大带宽的BWP上，即图3中的BWP1。在t1-t2时段，终端设备的业务量较小，此时可以将终端设备激活的BWP切换到一个小带宽的BWP上，即图3中的BWP2。在t2-t3时段，根据终端设备的业务需求，终端设备将激活的BWP切换到如图3示例的BWP3上等等。
根据图3的示例可知，通过BWP切换的方式可以改变终端设备在这个服务小区上激活的BWP。目前标准中支持的BWP切换方法有以下4种：
第一种，基于PDCCH的BWP切换。该切换方法是由网络设备控制的BWP切换。网络设备通过给单个终端设备发送小区无线网络临时标识(Cell-Radio Network Tempory Identity，简称C-RNTI)加扰的PDCCH，告知单个终端设备切换的目标BWP。
第二种，基于RRC重配置的BWP切换。该切换方法也是由网络设备控制的BWP切换。通过在RRC重配置消息中携带firstActiveDownlinkBWP-Id或者firstActiveUplinkBWP-Id，指示终端设备将激活的BWP切换为firstActiveDownlinkBWP-Id对应的BWP或者firstActiveUplinkBWP-Id 对应的BWP。
第三种，基于定时器超时的BWP切换。该切换方法为隐式方式的BWP切换。网络设备为终端设备的每个服务小区配置一个定时器bwp-InactivityTimer。如果终端设备当前激活的下行BWP是除默认BWP(default BWP)和初始BWP(initial BWP)以外的BWP，每次当终端设备在当前激活的BWP上收到指示该终端设备上行或下行调度的PDCCH，或者终端设备收到指示该终端设备在当前激活的BWP上上行或下行调度的PDCCH，都启动或重启定时器bwp-InactivityTimer。当定时器bwp-InactivityTimer超时时，终端设备自动切换到default BWP或者initial BWP，其中，default BWP和initial BWP均由RRC配置决定。
第四种，随机接入初始化引起的BWP切换。在RACH初始化过程中，如果终端设备在当前激活的上行BWP上没有配置随机接入时机，则终端设备自动将UL BWP切换到initial UL BWP，同时将DL BWP切换到initial DL BWP。
当前NR系统中，基站主要考虑终端设备业务量大小，基于C-RNTI加扰的PDCCH指示终端设备进行BWP切换，即业务量小时将终端设备切换到窄的BWP上，反之将终端设备切换到宽的BWP上。图4为本申请实施例提供的应用场景示意图，如图4所示，基站40服务的一个小区内包括终端设备41、终端设备42和终端设备43，其中，终端设备41、终端设备42和终端设备43均处于连接态。
通常，为了提高系统容量，小区内的连接态的终端设备不会被配置在相同的BWP上。例如，在图4的示例中，终端设备41当前激活的BWP为BWP1，终端设备42当前激活的BWP为BWP2，终端设备43当前激活的BWP为BWP3。即便当前每个终端设备只支持一个激活的BWP，但是从基站40的角度，由于要服务大量终端设备，基站40可能要使用更大的频域范围对小区内多个终端设备的业务数据进行收发，即基站40要打开的频域接收机范围远大于单个终端设备的收发带宽(例如激活的BWP带宽)。
打开更大的带宽进行收发可以提供更高的系统容量和传输效率，然而不利于基站节能。如果基站能够缩小数据收发的频域范围(例如收缩到initial BWP带宽上)，那么接收机通道(例如射频通道)就可以相应减小，就可以节省基站的功耗。然而，为了让终端设备和网络保持一致，基站40需要逐一通知受影响的终端设备(例如图4中示例的终端设备41、终端设备42和终端设备43)，即基站需要用C-RNTI加扰的PDCCH指示单个终端设备执行BWP切换。一方面，这会带来较大的信令开销，另一方面，可能由于PDCCH资源的限制，导致不能在短时间内完成所有受影响的终端设备的BWP切换，即会带来较大的时延，不能快速的做到基站节能。
基于上述技术问题，本申请实施例提供一种BWP切换方案，在节能PDCCH资源的前提下实现小区内的终端设备的BWP的切换。下面将对本申请的方案进行介绍。
图5为本申请实施例提供的切换方法的流程示意图，该方法应用于终端设备，终端设备处于连接态，如图5所示，该方法可以包括：
S51，基于寻呼监听获取指示信息。
在一个小区内包括多个连接态的终端设备，通常这多个连接态的终端设备被配置在不同的BWP上。由于网络设备需要服务大量终端设备，因此网络设备需要使用较大的频域范围对小区内的多个终端设备的业务数据进行首发，不利于网络设备的节能。
当网络设备需要缩小数据收发的频域范围以节能时，为了让终端设备和网络设备保持一致，网络设备需要指示终端设备进行BWP切换。
本申请实施例中，终端设备可以基于寻呼监听从网络设备获取指示信息。其中，寻呼监听用于寻呼过程相关数据的传输。寻呼监听可以包括监听的来自网络设备的P-RNTI加扰的PDCCH，还可以包括根据PDCCH中的寻呼下行控制信息接收的PDSCH。终端设备可以通过监听P-RNTI加扰的PDCCH获取指示信息，也可以通过接收PDSCH获取指示信息。
具体的，当连接态的终端设备当前激活的BWP上配置了公共搜索空间时，例如寻呼搜索空间时，终端设备可以在寻呼搜索空间上监听P-RNTI加扰的PDCCH，从而获取指示信息。在该实施方式中，指示信息例如可以位于寻呼下行控制信息中，终端设备通过在寻呼搜索空间上监听P-RNTI加扰的PDCCH获取到寻呼下行控制信息，从而在寻呼下行控制信息中获取到该指示信息。
当网络设备发送了寻呼消息时，指示信息也可以位于寻呼消息中。由于寻呼消息承载在PDSCH上，终端设备可以通过监听P-RNTI加扰的PDCCH获取寻呼下行控制信息，通过寻呼下行控制信息接收PDSCH，从而获取到承载于PDSCH上的寻呼消息，并获取到寻呼消息中的指示信息。
S52，根据指示信息，切换终端设备的带宽部分BWP。
终端设备获取该指示信息后，根据该指示信息，将终端设备当前激活的BWP切换至某一个目标BWP。由于网络设备是基于寻呼监听发送指示信息来指示终端设备进行BWP切换的，小区内的连接态的终端设备获取到的指示信息是相同的，因此小区内的连接态的终端设备在进行BWP切换后会切换到同一个BWP上。而网络设备在基于寻呼监听发送指示信息后，可以缩小数据收发的频域范围。其中，网络设备可以将收发的频域范围收缩到与终端设备切换后的BWP相同，也可以大于终端设备切换后的BWP。
本申请实施例提供的切换方法，终端设备基于寻呼监听获取指示信息，并根据指示信息切换终端设备的BWP，通过寻呼监听中寻呼过程相关数据的传输来传输指示信息，在空口进行寻呼过程相关数据的传输时，具有相同寻呼时机的终端设备的寻呼过程相关数据被汇总成一条，并通过寻呼信道传输给终端设备。因此，当网络设备要缩小数据收发的频域范围以节能时，只需要通过发送一次PDCCH进行寻呼过程相关数据的传输，就能够指示小区内所有的终端设备完成BWP切换，以保证与网络设备的一致，从而能够节省PDCCH资源，减小信令开销。
下面结合附图对本申请的方案进行详细介绍。
网络设备需要缩小数据收发的频域范围以节能时，需要指示终端设备进行BWP切换，即指示终端设备将当前激活的BWP切换至另一BWP上。本申请实施例中，网络设备基于寻呼监听发送指示信息，寻呼监听包括监听的来自网络设备的P-RNTI加扰的PDCCH，或者，根据PDCCH中的paging DCI接收的PDSCH。
当寻呼监听包括监听的来自网络设备的P-RNTI加扰的PDCCH时，指示信息可以位于pagingDCI中。终端设备通过监听PDCCH获取到paging DCI，从而获取该指示信息。该实施方式下，可以存在寻呼消息，也可以不存在寻呼消息。
当指示信息位于paging DCI中时，终端设备在获取paging DCI后，直接根据paging DCI就可以获取该指示信息。paging DCI是承载在PDCCH中的，当指示信息位于paging DCI中时，一种可能的实现方式是，指示信息可以位于paging DCI中的paging DCI format 1_0中的预留比特，另一种可能的实现方式是，指示信息也可以位于paging DCI的短消息中的预留比特。
针对paging DCI format 1_0，以下信息通过paging DCI format 1_0传输，CRC由P-RNTI加扰：
短消息指示符-2比特。
短消息-8比特。如果只携带paging的调度信息，则保留该比特字段。
Figure PCTCN2021112153-appb-000001
比特。如果只携带短消息，则保留该位字段，其中，
Figure PCTCN2021112153-appb-000002
为控制资源集CORESET 0的大小。
时域资源分配-4比特。如果只携带短消息，则保留该比特字段。
虚拟资源块(virtual resource block，简称VRB)到物理资源块(physical resource block，简称PRB)的映射-1比特。如果只携带短消息，则保留该比特字段。
调制和编码方案。如果只携带短消息，则保留该比特字段。
TB缩放-2比特。如果只携带短消息，则保留该比特字段。
预留比特-8比特，用于在具有共享频谱信道接入的小区中操作；否则为6位。
其中，指示信息可以位于paging DCI format 1_0中的预留比特中。
针对paging DCI的短消息，包括：
系统信息修改-如果设置为1：指示除SIB6、SIB7和SIB8之外的广播控制信道(Broadcast Control Channel，简称BCCH)修改。
etwsAndCmasIndication-如果设置为1：指示ETWS主要通知和/或ETWS次要通知和/或CMAS通知。
停止分页监控-如果存在nrofPDCCH-MonitoringOccasionPerSSB-InPO，该位只能用于共享频谱信道访问的操作。如果设置为1：指示UE可以停止监听PDCCH时机以在该寻呼时机中进行 寻呼。
预留比特-8比特，未在本规范版本中使用，如果收到，UE应忽略。
其中，指示信息可以位于paging DCI的短消息中的预留比特中。
上述实施例中介绍了寻呼监听包括监听的P-RNTI的PDCCH时指示信息位于pagingDCI中的情形。当存在寻呼消息时，寻呼监听还可以包括根据PDCCH中的paging DCI接收的PDSCH，指示信息可以位于承载于PDSCH的寻呼消息中。终端设备可以通过监听PDCCH获取到paging DCI，并根据paging DCI调度相应的PDSCH，获取承载在PDSCH上的寻呼消息，从而获取该指示信息。
由于本申请实施例中针对的是连接态的终端设备，因此寻呼消息对应的应用场景为网络设备发起的系统信息更新的通知。当指示信息位于寻呼消息中时，终端设备在获取paging DCI后，通过pagingDCI调度PDSCH，获取承载在PDSCH上的寻呼消息，从而在寻呼消息中获取该指示信息。具体的，当指示信息位于寻呼消息中时，寻呼的RRC消息中可以扩展1比特信息作为该指示信息，指示终端设备进行BWP切换。
终端设备获取指示信息后，根据指示信息切换BWP，其中，指示信息中可以包括BWP切换指示和第一BWP的标识中的至少一项。
具体的，指示信息中可以仅包括BWP切换指示，指示信息中可以仅包括第一BWP的标识，指示信息中也可以包括BWP切换指示和第一BWP的标识。当指示信息中包括的内容不同时，终端设备会根据指示信息进行相应的BWP切换操作，下面分别进行介绍。
首先对第一BWP进行介绍。
第一BWP可以为初始BWP(initial BWP)，也可以为网络节能BWP。其中，初始BWP为预先配置的，若网络设备通过指示信息指示终端设备将当前BWP切换至初始BWP，则网络设备在基于寻呼监听发送指示信息后，也可以缩小数据收发的频域范围。其中，网络设备可以缩小数据收发的频域范围至该初始BWP上，也可以缩小数据收发的频域范围至比该初始BWP略宽的带宽上。
网络节能BWP为网络设备配置的BWP。在一种实施方式中，网络设备可以通过系统信息广播配置该网络节能BWP，终端设备通过获取广播的系统信息，获取该网络节能BWP。在另一种实施方式中，网络设备可以通过RRC消息配置该网络节能BWP，终端设备通过获取RRC消息，获取该网络节能BWP。若网络设备通过指示信息指示终端设备将当前BWP切换至网络节能BWP，则网络设备在基于寻呼监听发送指示信息后，也可以缩小数据收发的频域范围。其中，网络设备可以缩小数据收发的频域范围至该网络节能BWP上，也可以缩小数据收发的频域范围至比该网络节能BWP略宽的带宽上。
下面将对指示信息包括的内容介绍。
当指示信息中包括BWP切换指示时，BWP切换指示可以用于指示终端设备在下一系统信息更新周期接收系统信息，并根据系统信息将当前BWP切换至第一BWP，其中，系统信息中包括第一BWP的标识。
例如，当指示信息位于寻呼消息中时，可以在寻呼消息中扩展1比特信息作为该BWP切换指示，终端设备通过获取寻呼消息获取该BWP切换指示；例如，当指示信息位于paging DCI format 1_0中的预留比特时，paging DCI format 1_0中的预留比特中可以包括该BWP切换指示，终端设备通过获取paging DCI format 1_0中的预留比特获取该BWP切换指示；例如，当指示信息位于paging DCI中的短消息中的预留比特时，paging DCI中的短消息中的预留比特中可以包括该BWP切换指示，终端设备通过获取paging DCI中的短消息中的预留比特获取该BWP切换指示。
在获取该BWP切换指示后，可以根据BWP切换指示执行BWP切换。
图6为本申请实施例提供的BWP切换时刻示意图一，如图6所示，终端设备在SI更新周期n内的时刻A获取了指示信息，该指示信息指示终端设备在下一系统信息更新周期接收系统信息，并根据系统信息将当前BWP切换至第一BWP，其中，系统信息中包括第一BWP的标识。
然后，终端设备在下一个SI更新周期即SI更新周期n+1开始的时刻(即图8中示例的时刻B)接收系统信息，获取SIB1中的第一BWP的标识，并将当前激活的BWP切换到第一BWP上。其中，第一BWP为初始BWP，终端设备将当前BWP切换到初始BWP上；第一BWP为网络节能BWP时，终端设备将当前BWP切换到网络节能BWP上。
通过在下一个系统信息更新周期开始时从系统信息中获取第一BWP的标识，进行BWP切换，从而指示信息中无需指示更新的BWP，减少了指示信息中所要使用的比特。
当指示信息中包括BWP切换指示时，BWP切换指示还可以用于指示终端设备将当前BWP 切换至第一BWP。终端设备在获取到该BWP切换指示后，根据该BWP切换指示即可将当前BWP切换至第一BWP。
例如，当指示信息位于寻呼消息中时，可以在寻呼消息的RRC消息中扩展1比特信息作为该BWP切换指示，BWP切换指示用于指示将当前BWP切换到第一BWP上。当终端设备获取到该BWP切换指示后，根据该BWP切换指示，默认将当前BWP切换到第一BWP上。
例如，当指示信息位于paging DCI format 1_0中的预留比特时，paging DCI format 1_0中的预留比特中可以包括BWP切换指示，用于指示将当前BWP切换到第一BWP上。当终端设备通过获取paging DCI format 1_0中的预留比特获取到该BWP切换指示后，根据该BWP切换指示，默认将当前BWP切换到第一BWP上。
例如，当指示信息位于paging DCI中的短消息中的预留比特时，paging DCI中的短消息中的预留比特中可以包括BWP切换指示，用于指示将当前BWP切换到第一BWP上。当终端设备通过获取paging DCI中的短消息中的预留比特获取到该BWP切换指示后，根据该BWP切换指示，默认将当前BWP切换到第一BWP上。
其中，当第一BWP为初始BWP时，终端设备根据该BWP切换指示将当前BWP切换至初始BWP；当第一BWP为网络节能BWP时，终端设备根据该BWP切换指示将当前BWP切换至网络节能BWP。
当指示信息中包括第一BWP的标识时，第一BWP的标识用于指示终端设备将当前BWP切换至第一BWP。
例如，可以在寻呼消息的RRC消息中扩展1比特信息作为该第一BWP的标识，第一BWP的标识用于指示将当前BWP切换到该第一BWP上。当终端设备获取到第一BWP的标识后，根据第一BWP的标识，将当前激活的BWP切换到该第一BWP上。其中，第一BWP可以为初始BWP，也可以为网络节能BWP。当第一BWP为初始BWP时，指示信息中包括初始BWP的标识，用于指示将终端设备当前的BWP切换到初始BWP上；当第一BWP为网络节能BWP时，指示信息中包括网络节能BWP的标识，用于指示将终端设备当前的BWP切换到网络节能BWP上。
例如，当指示信息位于paging DCI format 1_0中的预留比特时，paging DCI format 1_0中的预留比特中可以包括第一BWP的标识，用于指示将BWP切换到该第一BWP上。当终端设备通过获取paging DCI format 1_0中的预留比特获取到第一BWP的标识后，根据第一BWP的标识，将当前激活的BWP切换到该第一BWP上。其中，第一BWP可以为初始BWP，也可以为网络节能BWP。当第一BWP为初始BWP时，指示信息中包括初始BWP的标识，用于指示将终端设备的BWP切换到初始BWP上；当第一BWP为网络节能BWP时，指示信息中包括网络节能BWP的标识，用于指示将终端设备的BWP切换到网络节能BWP上。
例如，当指示信息位于paging DCI中的短消息中的预留比特时，paging DCI中的短消息中的预留比特中可以包括第一BWP的标识，用于指示将BWP切换到该第一BWP上。当终端设备通过获取paging DCI中的短消息中的预留比特获取到第一BWP的标识后，根据第一BWP的标识，将当前激活的BWP切换到该第一BWP上。其中，第一BWP可以为初始BWP，也可以为网络节能BWP。当第一BWP为初始BWP时，指示信息中包括初始BWP的标识，用于指示将终端设备的BWP切换到初始BWP上；当第一BWP为网络节能BWP时，指示信息中包括网络节能BWP的标识，用于指示将终端设备的BWP切换到网络节能BWP上。
当指示信息中包括BWP切换指示和第一BWP的标识时，BWP切换指示和第一BWP的标识用于指示终端设备将当前BWP切换至第一BWP。
例如，BWP切换指示和第一BWP的标识可以位于寻呼消息中，用于指示将当前BWP切换到该第一BWP上。当终端设备获取到BWP切换指示和第一BWP的标识后，根据BWP切换指示和第一BWP的标识，将当前激活的BWP切换到该第一BWP上。其中，第一BWP可以为初始BWP，也可以为网络节能BWP。当第一BWP为初始BWP时，指示信息中包括BWP切换指示和初始BWP的标识，用于指示将终端设备当前的BWP切换到初始BWP上；当第一BWP为网络节能BWP时，指示信息中包括BWP切换指示和网络节能BWP的标识，用于指示将终端设备当前的BWP切换到网络节能BWP上。
例如，当指示信息位于paging DCI format 1_0中的预留比特时，paging DCI format 1_0中的预留比特中可以包括BWP切换指示和第一BWP的标识，用于指示将当前BWP切换到该第一BWP上。当终端设备获取到BWP切换指示和第一BWP的标识后，根据BWP切换指示和第一BWP的标识，将当前激活的BWP切换到该第一BWP上。其中，第一BWP可以为初始BWP，也可以为 网络节能BWP。当第一BWP为初始BWP时，指示信息中包括BWP切换指示和初始BWP的标识，用于指示将终端设备当前的BWP切换到初始BWP上；当第一BWP为网络节能BWP时，指示信息中包括BWP切换指示和网络节能BWP的标识，用于指示将终端设备当前的BWP切换到网络节能BWP上。
例如，当指示信息位于paging DCI中的短消息中的预留比特时，paging DCI中的短消息中的预留比特中可以包括BWP切换指示和第一BWP的标识，用于指示将当前BWP切换到该第一BWP上。当终端设备获取到BWP切换指示和第一BWP的标识后，根据BWP切换指示和第一BWP的标识，将当前激活的BWP切换到该第一BWP上。其中，第一BWP可以为初始BWP，也可以为网络节能BWP。当第一BWP为初始BWP时，指示信息中包括BWP切换指示和初始BWP的标识，用于指示将终端设备当前的BWP切换到初始BWP上；当第一BWP为网络节能BWP时，指示信息中包括BWP切换指示和网络节能BWP的标识，用于指示将终端设备当前的BWP切换到网络节能BWP上。
当指示信息用于指示在将当前BWP切换至第一BWP时，在终端设备获取到指示信息后，可以根据指示信息切换终端设备当前BWP至第一BWP。具体的，终端设备在获取到指示信息后，在第一时刻根据该指示信息切换终端设备当前的BWP为第一BWP，其中，第一时刻有两种可能，下面分别进行介绍。
一种可能的实现方式是，终端设备在获取指示信息后，立即进行BWP切换，即第一时刻为获取该指示信息的时刻。图7为本申请实施例提供的BWP切换时刻示意图二，如图7所示，在时刻A终端设备获取了指示信息，该指示信息指示进行BWP切换，从而在时刻A上将终端设备当前激活的BWP切换至第一BWP上，其中，图7中示意的时刻A即为第一时刻，本申请实施例中，第一时刻为获取指示信息的时刻。
图7示例的方案，在获取指示信息的时刻就执行BWP切换，可以实现快速BWP切换，降低时延。
另一种可能的实现方式是，终端设备在获取指示信息后，等到下一个系统信息更新周期开始时执行BWP切换，即第一时刻为下一系统信息更新周期开始的时刻。图8为本申请实施例提供的BWP切换时刻示意图三，如图8所示，在SI更新周期n内的时刻A，终端设备获取了指示信息，指示信息指示进行BWP切换。然后，终端设备在获取指示信息后，等到下一个系统信息更新周期(即SI更新周期n+1)开始时执行BWP切换，下一个系统信息更新周期开始时刻即为图8示例的时刻B。在图8中，时刻B即为第一时刻。
图8示例的方案，能够使得小区内所有的终端设备同时执行BWP切换，从而与网络设备保持一致。
图9为本申请实施例提供的切换方法的流程示意图，该方法应用于网络设备，如图9所示，该方法包括：
S91，基于寻呼监听发送指示信息，指示信息用于指示切换终端设备的BWP，终端设备处于连接态。
在一种可能的实施方式中，所述寻呼监听包括以下中的至少一项：
发送的P-RNTI加扰的PDCCH；
根据所述PDCCH中的寻呼下行控制信息发送的PDSCH。
在一种可能的实施方式中，所述寻呼监听包括发送的P-RNTI加扰的PDCCH；
所述指示信息位于寻呼下行控制信息中。
在一种可能的实施方式中，所述指示信息位于所述寻呼下行控制信息中的寻呼下行控制信息格式1_0中的预留比特；或者，
所述指示信息位于所述寻呼下行控制信息的短消息中的预留比特。
在一种可能的实施方式中，所述寻呼监听包括根据所述PDCCH中的寻呼下行控制信息发送的PDSCH；
所述指示信息位于承载于所述PDSCH的寻呼消息中。
在一种可能的实施方式中，所述指示信息中包括以下中的至少一项：
BWP切换指示；
第一BWP的标识。
在一种可能的实施方式中，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示所述终端设备在下一系统信息更新周期接收系统信息，并根据所述系统信息将当前BWP切换 至第一BWP，其中，所述系统信息中包括所述第一BWP的标识。
在一种可能的实施方式中，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示所述终端设备将当前BWP切换至第一BWP。
在一种可能的实施方式中，所述指示信息包括所述第一BWP的标识；所述第一BWP的标识用于指示所述终端设备将当前BWP切换至所述第一BWP。
在一种可能的实施方式中，所述指示信息包括所述BWP切换指示和所述第一BWP的标识；所述BWP切换指示和所述第一BWP的标识用于指示所述终端设备将当前BWP切换至所述第一BWP。
在一种可能的实施方式中，所述指示信息用于指示所述终端设备在第一时刻将当前BWP切换至所述第一BWP。
在一种可能的实施方式中，所述第一时刻为以下中的任意一项：
获取所述指示信息的时刻；
下一系统信息更新周期开始的时刻。
在一种可能的实施方式中，所述第一BWP为以下中的任意一项：
初始BWP；
网络节能BWP，所述网络节能BWP为网络设备配置的。
在一种可能的实施方式中，所述网络节能BWP为所述网络设备通过系统信息配置的；或者，
所述网络节能BWP为所述网络设备通过无线资源控制RRC消息配置的。
图9示例的方法为网络设备侧的执行方法，具体的实现方案在上述实施例中已介绍，此处不再赘述。
本申请实施例提供的切换方法，终端设备基于寻呼监听获取指示信息，并根据指示信息切换终端设备的BWP，通过寻呼监听中寻呼过程相关数据的传输来传输指示信息，在空口进行寻呼过程相关数据的传输时，具有相同寻呼时机的终端设备的寻呼过程相关数据被汇总成一条，并通过寻呼信道传输给终端设备。因此，当网络设备要缩小数据收发的频域范围以节能时，只需要通过发送一次PDCCH进行寻呼过程相关数据的传输，就能够指示小区内所有的终端设备完成BWP切换，以保证与网络设备的一致，从而能够节省PDCCH资源，减小信令开销。进一步的，当指示信息指示切换到第一BWP时，可以在获取指示信息时立刻执行BWP切换，从而可以达到快速BWP切换的效果，还可以等到下一系统信息更新周期开始时刻执行BWP切换，从而使得所有的终端设备同时执行BWP切换，保持和网络设备一致；当指示信息指示切换BWP时，可以在下一系统信息更新周期开始时刻获取更新的BWP，并切换到更新的BWP上，从而可以减小指示信息中所要使用的比特。
图10为本申请实施例提供的切换装置的结构示意图，如图10所示，该切换装置100包括：
获取模块101，用于基于寻呼监听获取指示信息；
切换模块102，用于根据所述指示信息，切换终端设备的BWP，所述终端设备处于连接态。
在一种可能的实施方式中，所述寻呼监听包括以下中的至少一项：
监听的来自网络设备的寻呼无线网络临时标识P-RNTI加扰的物理下行控制信道PDCCH；
根据所述PDCCH中的寻呼下行控制信息接收的物理下行共享信道PDSCH。
在一种可能的实施方式中，所述寻呼监听包括监听的来自网络设备的P-RNTI加扰的PDCCH；
所述指示信息位于寻呼下行控制信息中。
在一种可能的实施方式中，所述指示信息位于所述寻呼下行控制信息中的寻呼下行控制信息格式1_0中的预留比特；或者，
所述指示信息位于所述寻呼下行控制信息的短消息中的预留比特。
在一种可能的实施方式中，所述寻呼监听包括根据所述PDCCH中的寻呼下行控制信息接收的PDSCH；
所述指示信息位于承载于所述PDSCH的寻呼消息中。
在一种可能的实施方式中，所述指示信息包括以下中的至少一项：
BWP切换指示；
第一BWP的标识。
在一种可能的实施方式中，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示在下一系统信息更新周期接收系统信息，并根据所述系统信息将当前BWP切换至第一BWP，其中，所述系统信息中包括所述第一BWP的标识。
在一种可能的实施方式中，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示将当前BWP切换至第一BWP。
在一种可能的实施方式中，所述指示信息包括所述第一BWP的标识；所述第一BWP的标识用于指示将当前BWP切换至所述第一BWP。
在一种可能的实施方式中，所述指示信息包括所述BWP切换指示和所述第一BWP的标识；所述BWP切换指示和所述第一BWP的标识用于指示将当前BWP切换至所述第一BWP。
在一种可能的实施方式中，所述指示信息用于指示在第一时刻将当前BWP切换至所述第一BWP。
在一种可能的实施方式中，所述第一时刻为以下中的任意一项：
获取所述指示信息的时刻；
下一系统信息更新周期开始的时刻。
在一种可能的实施方式中，所述第一BWP为以下中的任意一项：
初始BWP；
网络节能BWP，所述网络节能BWP为网络设备配置的。
在一种可能的实施方式中，所述网络节能BWP为所述网络设备通过系统信息配置的；或者，
所述网络节能BWP为所述网络设备通过无线资源控制RRC消息配置的。
本申请实施例提供的切换装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图11为本申请实施例提供的切换装置的结构示意图，如图11所示，该切换装置110包括：
发送模块111，用于基于寻呼监听发送指示信息，所述指示信息用于指示切换终端设备的BWP，所述终端设备处于连接态。
在一种可能的实施方式中，所述寻呼监听包括以下中的至少一项：
发送的P-RNTI加扰的PDCCH；
根据所述PDCCH中的寻呼下行控制信息发送的PDSCH。
在一种可能的实施方式中，所述寻呼监听包括发送的P-RNTI加扰的PDCCH；
所述指示信息位于寻呼下行控制信息中。
在一种可能的实施方式中，所述指示信息位于所述寻呼下行控制信息中的寻呼下行控制信息格式1_0中的预留比特；或者，
所述指示信息位于所述寻呼下行控制信息的短消息中的预留比特。
在一种可能的实施方式中，所述寻呼监听包括根据所述PDCCH中的寻呼下行控制信息发送的PDSCH；
所述指示信息位于承载于所述PDSCH的寻呼消息中。
在一种可能的实施方式中，所述指示信息中包括以下中的至少一项：
BWP切换指示；
第一BWP的标识。
在一种可能的实施方式中，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示所述终端设备在下一系统信息更新周期接收系统信息，并根据所述系统信息将当前BWP切换至第一BWP，其中，所述系统信息中包括所述第一BWP的标识。
在一种可能的实施方式中，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示所述终端设备将当前BWP切换至第一BWP。
在一种可能的实施方式中，所述指示信息包括所述第一BWP的标识；所述第一BWP的标识用于指示所述终端设备将当前BWP切换至所述第一BWP。
在一种可能的实施方式中，所述指示信息包括所述BWP切换指示和所述第一BWP的标识；所述BWP切换指示和所述第一BWP的标识用于指示所述终端设备将当前BWP切换至所述第一BWP。
在一种可能的实施方式中，所述指示信息用于指示所述终端设备在第一时刻将当前BWP切换至所述第一BWP。
在一种可能的实施方式中，所述第一时刻为以下中的任意一项：
获取所述指示信息的时刻；
下一系统信息更新周期开始的时刻。
在一种可能的实施方式中，所述第一BWP为以下中的任意一项：
初始BWP；
网络节能BWP，所述网络节能BWP为网络设备配置的。
在一种可能的实施方式中，所述网络节能BWP为所述网络设备通过系统信息配置的；或者，
所述网络节能BWP为所述网络设备通过无线资源控制RRC消息配置的。
本申请实施例提供的切换装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图12为本申请实施例提供的终端设备的结构示意图。请参见图12，终端设备120可以包括：收发器121、存储器122、处理器123。收发器121可包括：发射器和/或接收器。该发射器还可称为发送器、发射机、发送端口或发送接口等类似描述，接收器还可称为接收器、接收机、接收端口或接收接口等类似描述。示例性地，收发器121、存储器122、处理器123，各部分之间通过总线124相互连接。
存储器122用于存储程序指令；
处理器123用于执行该存储器所存储的程序指令，用以使得终端设备120执行上述任一所示的切换方法。
其中，收发器121的接收器，可用于执行上述切换方法中终端设备的接收功能。
图13为本申请实施例提供的网络设备的结构示意图。请参见图13，网络设备130可以包括：收发器131、存储器132、处理器133。收发器131可包括：发射器和/或接收器。该发射器还可称为发送器、发射机、发送端口或发送接口等类似描述，接收器还可称为接收器、接收机、接收端口或接收接口等类似描述。示例性地，收发器131、存储器132、处理器133，各部分之间通过总线134相互连接。
存储器132用于存储程序指令；
处理器133用于执行该存储器所存储的程序指令，用以使得终端设备130执行上述任一所示的切换方法。
其中，收发器131的接收器，可用于执行上述切换方法中终端设备的接收功能。
本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现上述切换方法。
本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现上述切换方法。
本申请实施例还可提供一种计算机程序产品，该计算机程序产品可以由处理器执行，在计算机程序产品被执行时，可实现上述任一所示的终端设备或者网络设备执行的切换方法。
本申请实施例的通信设备、计算机可读存储介质及计算机程序产品，可执行上述终端设备以及网络设备执行的切换方法，其具体的实现过程及有益效果参见上述，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。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
本领域普通技术人员可以理解：实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的计算机程序可以存储于一计算机可读取存储介质中。该计算机程序在被处理器执行时，实现包括上述各方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修 改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (60)

  1. 一种切换方法，其特征在于，应用于终端设备，所述终端设备处于连接态，所述方法包括：
    基于寻呼监听获取指示信息；
    根据所述指示信息，切换所述终端设备的带宽部分BWP。
  2. 根据权利要求1所述的切换方法，其特征在于，所述寻呼监听包括以下中的至少一项：
    监听的来自网络设备的寻呼无线网络临时标识P-RNTI加扰的物理下行控制信道PDCCH；
    根据所述PDCCH中的寻呼下行控制信息接收的物理下行共享信道PDSCH。
  3. 根据权利要求1或2所述的切换方法，其特征在于，所述寻呼监听包括监听的来自网络设备的P-RNTI加扰的PDCCH；
    所述指示信息位于寻呼下行控制信息中。
  4. 根据权利要求3所述的切换方法，其特征在于，所述指示信息位于所述寻呼下行控制信息中的寻呼下行控制信息格式1_0中的预留比特；或者，
    所述指示信息位于所述寻呼下行控制信息的短消息中的预留比特。
  5. 根据权利要求1或2所述的切换方法，其特征在于，所述寻呼监听包括根据PDCCH中的寻呼下行控制信息接收的PDSCH；
    所述指示信息位于承载于所述PDSCH的寻呼消息中。
  6. 根据权利要求1-5任一项所述的切换方法，其特征在于，所述指示信息中包括以下中的至少一项：
    BWP切换指示；
    第一BWP的标识。
  7. 根据权利要求6所述的切换方法，其特征在于，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示在下一系统信息更新周期接收系统信息，并根据所述系统信息将当前BWP切换至第一BWP，其中，所述系统信息中包括所述第一BWP的标识。
  8. 根据权利要求6所述的切换方法，其特征在于，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示将当前BWP切换至第一BWP。
  9. 根据权利要求6所述的切换方法，其特征在于，所述指示信息包括所述第一BWP的标识；所述第一BWP的标识用于指示将当前BWP切换至所述第一BWP。
  10. 根据权利要求6所述的切换方法，其特征在于，所述指示信息包括所述BWP切换指示和所述第一BWP的标识；所述BWP切换指示和所述第一BWP的标识用于指示将当前BWP切换至所述第一BWP。
  11. 根据权利要求8-10任一项所述的切换方法，其特征在于，所述指示信息用于指示在第一时刻将当前BWP切换至所述第一BWP。
  12. 根据权利要求11所述的切换方法，其特征在于，所述第一时刻为以下中的任意一项：
    获取所述指示信息的时刻；
    下一系统信息更新周期开始的时刻。
  13. 根据权利要求6-12任一项所述的切换方法，其特征在于，所述第一BWP为以下中的任意一项：
    初始BWP；
    网络节能BWP，所述网络节能BWP为网络设备配置的。
  14. 根据权利要求13所述的切换方法，其特征在于，所述网络节能BWP为所述网络设备通过系统信息配置的；或者，
    所述网络节能BWP为所述网络设备通过无线资源控制RRC消息配置的。
  15. 一种切换方法，其特征在于，应用于网络设备，所述方法包括：
    基于寻呼监听发送指示信息，所述指示信息用于指示切换终端设备的BWP，所述终端设备处于连接态。
  16. 根据权利要求15所述的切换方法，其特征在于，所述寻呼监听包括以下中的至少一项：
    发送的P-RNTI加扰的PDCCH；
    根据所述PDCCH中的寻呼下行控制信息发送的PDSCH。
  17. 根据权利要求15或16所述的切换方法，其特征在于，所述寻呼监听包括发送的P-RNTI加扰的PDCCH；
    所述指示信息位于寻呼下行控制信息中。
  18. 根据权利要求17所述的切换方法，其特征在于，所述指示信息位于所述寻呼下行控制信息中的寻呼下行控制信息格式1_0中的预留比特；或者，
    所述指示信息位于所述寻呼下行控制信息的短消息中的预留比特。
  19. 根据权利要求15或16所述的切换方法，其特征在于，所述寻呼监听包括根据PDCCH中的寻呼下行控制信息发送的PDSCH；
    所述指示信息位于承载于所述PDSCH的寻呼消息中。
  20. 根据权利要求15-19任一项所述的切换方法，其特征在于，所述指示信息中包括以下中的至少一项：
    BWP切换指示；
    第一BWP的标识。
  21. 根据权利要求20所述的切换方法，其特征在于，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示所述终端设备在下一系统信息更新周期接收系统信息，并根据所述系统信息将当前BWP切换至第一BWP，其中，所述系统信息中包括所述第一BWP的标识。
  22. 根据权利要求20所述的切换方法，其特征在于，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示所述终端设备将当前BWP切换至第一BWP。
  23. 根据权利要求20所述的切换方法，其特征在于，所述指示信息包括所述第一BWP的标识；所述第一BWP的标识用于指示所述终端设备将当前BWP切换至所述第一BWP。
  24. 根据权利要求20所述的切换方法，其特征在于，所述指示信息包括所述BWP切换指示和所述第一BWP的标识；所述BWP切换指示和所述第一BWP的标识用于指示所述终端设备将当前BWP切换至所述第一BWP。
  25. 根据权利要求22-24任一项所述的切换方法，其特征在于，所述指示信息用于指示所述终端设备在第一时刻将当前BWP切换至所述第一BWP。
  26. 根据权利要求25所述的切换方法，其特征在于，所述第一时刻为以下中的任意一项：
    发送所述指示信息的时刻；
    下一系统信息更新周期开始的时刻。
  27. 根据权利要求20-26任一项所述的切换方法，其特征在于，所述第一BWP为以下中的任意一项：
    初始BWP；
    网络节能BWP，所述网络节能BWP为所述网络设备配置的。
  28. 根据权利要求27所述的切换方法，其特征在于，所述网络节能BWP为所述网络设备通过系统信息配置的；或者，
    所述网络节能BWP为所述网络设备通过RRC消息配置的。
  29. 一种切换装置，其特征在于，包括：
    获取模块，用于基于寻呼监听获取指示信息；
    切换模块，用于根据所述指示信息，切换终端设备的BWP，所述终端设备处于连接态。
  30. 根据权利要求29所述的切换装置，其特征在于，所述寻呼监听包括以下中的至少一项：
    监听的来自网络设备的P-RNTI加扰的PDCCH；
    根据所述PDCCH中的寻呼下行控制信息接收的PDSCH。
  31. 根据权利要求29或30所述的切换装置，其特征在于，所述寻呼监听包括监听的来自网络设备的P-RNTI加扰的PDCCH；
    所述指示信息位于寻呼下行控制信息中。
  32. 根据权利要求31所述的切换装置，其特征在于，所述指示信息位于所述寻呼下行控制信息中的寻呼下行控制信息格式1_0中的预留比特；或者，
    所述指示信息位于所述寻呼下行控制信息的短消息中的预留比特。
  33. 根据权利要求29或30所述的切换装置，其特征在于，所述寻呼监听包括根据PDCCH中的寻呼下行控制信息接收的PDSCH；
    所述指示信息位于承载于所述PDSCH的寻呼消息中。
  34. 根据权利要求29-33任一项所述的切换装置，其特征在于，所述指示信息包括以下中的至少一项：
    BWP切换指示；
    第一BWP的标识。
  35. 根据权利要求34所述的切换装置，其特征在于，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示在下一系统信息更新周期接收系统信息，并根据所述系统信息将当前BWP切换至第一BWP，其中，所述系统信息中包括所述第一BWP的标识。
  36. 根据权利要求34所述的切换装置，其特征在于，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示将当前BWP切换至第一BWP。
  37. 根据权利要求34所述的切换装置，其特征在于，所述指示信息包括所述第一BWP的标识；所述第一BWP的标识用于指示将当前BWP切换至所述第一BWP。
  38. 根据权利要求34所述的切换装置，其特征在于，所述指示信息包括所述BWP切换指示和所述第一BWP的标识；所述BWP切换指示和所述第一BWP的标识用于指示将当前BWP切换至所述第一BWP。
  39. 根据权利要求36-38任一项所述的切换装置，其特征在于，所述指示信息用于指示在第一时刻将当前BWP切换至所述第一BWP。
  40. 根据权利要求39所述的切换装置，其特征在于，所述第一时刻为以下中的任意一项：
    获取所述指示信息的时刻；
    下一系统信息更新周期开始的时刻。
  41. 根据权利要求34-40任一项所述的切换装置，其特征在于，所述第一BWP为以下中的任意一项：
    初始BWP；
    网络节能BWP，所述网络节能BWP为网络设备配置的。
  42. 根据权利要求41所述的切换装置，其特征在于，所述网络节能BWP为所述网络设备通过系统信息配置的；或者，
    所述网络节能BWP为所述网络设备通过RRC消息配置的。
  43. 一种切换装置，其特征在于，包括：
    发送模块，用于基于寻呼监听发送指示信息，所述指示信息用于指示切换终端设备的BWP，所述终端设备处于连接态。
  44. 根据权利要求43所述的切换装置，其特征在于，所述寻呼监听包括以下中的至少一项：
    发送的P-RNTI加扰的PDCCH；
    根据所述PDCCH中的寻呼下行控制信息发送的PDSCH。
  45. 根据权利要求43或44所述的切换装置，其特征在于，所述寻呼监听包括发送的P-RNTI加扰的PDCCH；
    所述指示信息位于寻呼下行控制信息中。
  46. 根据权利要求45所述的切换装置，其特征在于，所述指示信息位于所述寻呼下行控制信息中的寻呼下行控制信息格式1_0中的预留比特；或者，
    所述指示信息位于所述寻呼下行控制信息的短消息中的预留比特。
  47. 根据权利要求43或44所述的切换装置，其特征在于，所述寻呼监听包括根据PDCCH中的寻呼下行控制信息发送的PDSCH；
    所述指示信息位于承载于所述PDSCH的寻呼消息中。
  48. 根据权利要求43-47任一项所述的切换装置，其特征在于，所述指示信息中包括以下中的至少一项：
    BWP切换指示；
    第一BWP的标识。
  49. 根据权利要求48所述的切换装置，其特征在于，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示所述终端设备在下一系统信息更新周期接收系统信息，并根据所述系统信息将当前BWP切换至第一BWP，其中，所述系统信息中包括所述第一BWP的标识。
  50. 根据权利要求48所述的切换装置，其特征在于，所述指示信息包括所述BWP切换指示；所述BWP切换指示用于指示所述终端设备将当前BWP切换至第一BWP。
  51. 根据权利要求48所述的切换装置，其特征在于，所述指示信息包括所述第一BWP的标识；所述第一BWP的标识用于指示所述终端设备将当前BWP切换至所述第一BWP。
  52. 根据权利要求48所述的切换装置，其特征在于，所述指示信息包括所述BWP切换指示和所述第一BWP的标识；所述BWP切换指示和所述第一BWP的标识用于指示所述终端设备将 当前BWP切换至所述第一BWP。
  53. 根据权利要求50-52任一项所述的切换装置，其特征在于，所述指示信息用于指示所述终端设备在第一时刻将当前BWP切换至所述第一BWP。
  54. 根据权利要求53所述的切换装置，其特征在于，所述第一时刻为以下中的任意一项：
    发送所述指示信息的时刻；
    下一系统信息更新周期开始的时刻。
  55. 根据权利要求48-54任一项所述的切换装置，其特征在于，所述第一BWP为以下中的任意一项：
    初始BWP；
    网络节能BWP，所述网络节能BWP为网络设备配置的。
  56. 根据权利要求55所述的切换装置，其特征在于，所述网络节能BWP为所述网络设备通过系统信息配置的；或者，
    所述网络节能BWP为所述网络设备通过RRC消息配置的。
  57. 一种终端设备，其特征在于，包括：收发器、处理器、存储器；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如权利要求1至14任一项所述的切换方法。
  58. 一种网络设备，其特征在于，包括：收发器、处理器、存储器；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如权利要求15至28任一项所述的切换方法。
  59. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现如权利要求1至14或15至28任一项所述的切换方法。
  60. 一种计算机程序产品，包括计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1至14或15至28任一项所述的切换方法。
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OPPO: ""Discussion on SI change indication for RRC_CONNECTED UE"", R2-1813780, 28 September 2018 (2018-09-28) *
QUALCOMM INCORPORATED: "Open Issues on BWP", 3GPP DRAFT; R1-1718580 OPEN ISSUES ON BWP, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Prague, Czech Republic; 20171009 - 20171013, 3 October 2017 (2017-10-03), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051353146 *

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