CN117413585A

CN117413585A - Switching method and device

Info

Publication number: CN117413585A
Application number: CN202180098767.0A
Authority: CN
Inventors: 李海涛; 胡奕
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2024-01-16
Also published as: WO2023015506A1

Abstract

The embodiment of the application provides a switching method and a switching device, wherein the method is applied to terminal equipment, and the terminal equipment is in a connection state, and the method comprises the following steps: the method comprises the steps of acquiring indication information based on paging monitoring, switching BWP of terminal equipment according to the indication information, transmitting the indication information through transmission of paging process related data in the paging monitoring, and summarizing the paging process related data of the terminal equipment with the same paging time into one piece and transmitting the piece to the terminal equipment through a paging channel when the paging process related data is transmitted on an air interface. Therefore, when the network device is to reduce the frequency domain range of data transmission and reception to save energy, it is only necessary to transmit the data related to the paging process by sending the PDCCH once, so as to instruct all the terminal devices in the cell to complete BWP switching, thereby ensuring the consistency with the network device, and further saving PDCCH resources and reducing signaling overhead.

Description

Switching method and device

Technical Field

The present disclosure relates to the field of communications, and in particular, to a switching method and apparatus.

Background

In order to achieve the energy-saving effect of the terminal equipment, a Bandwidth Part (BWP) is introduced into a New air interface (New Radio, abbreviated as NR), that is, a Part of continuous Bandwidth is divided into the whole carrier with large Bandwidth for the terminal equipment, and the terminal only performs data transceiving in the Part of continuous Bandwidth.

In general, in order to increase system capacity, terminal devices in a connected state within a cell are not configured on the same BWP. Because the base station needs to serve a large number of terminal devices, the base station needs to use a larger frequency domain range to transmit and receive service data of a plurality of terminal devices in a cell, and the power consumption is larger. 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 device and the base station consistent, BWP switching needs to be performed on the terminal device.

However, in the present BWP handover scheme, the base station needs to notify the terminal devices in the cell that need to perform BWP handover one by one, resulting in a large signaling overhead.

Disclosure of Invention

The embodiment of the application provides a switching method and a switching device, which are used for reducing signaling overhead of BWP switching when a base station needs energy conservation at present.

In a first aspect, an embodiment of the present application provides a handover method, applied to a terminal device, where the terminal device is in a connected state, the method includes:

acquiring indication information based on paging monitoring;

and switching the bandwidth part BWP of the terminal equipment according to the indication information.

In a second aspect, an embodiment of the present application provides a handover method, applied to a network device, where the method includes:

And sending indication information based on paging monitoring, wherein the indication information is used for indicating the BWP of the switching terminal equipment, and the terminal equipment is in a connected state.

In a third aspect, an embodiment of the present application provides a switching device, including:

the acquisition module is used for acquiring indication information based on paging monitoring;

and the switching module is used for switching the BWP of the terminal equipment according to the indication information, wherein the terminal equipment is in a connection state.

In a fourth aspect, an embodiment of the present application provides a switching device, including:

and the sending module is used for sending indication information based on paging monitoring, wherein the indication information is used for indicating the BWP of the switching terminal equipment, and the terminal equipment is in a connection state.

In a fifth aspect, an embodiment of the present application provides a terminal device, including: a transceiver, a processor, a memory;

the memory stores computer-executable instructions;

the processor executing computer-executable instructions stored in the memory, causing the processor to perform the handover method of any one of the first aspect.

In a sixth aspect, embodiments of the present application provide a network device, including: a transceiver, a processor, a memory;

the memory stores computer-executable instructions;

The processor executing computer-executable instructions stored in the memory, causes the processor to perform the handover method of any of the second aspects.

In a seventh aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for implementing the handover method according to any one of the first or second aspects when the computer-executable instructions are executed by a processor.

In an eighth aspect, embodiments of the present application provide a computer program product comprising a computer program which, when executed by a processor, implements a handover method as in any of the first or second aspects.

According to the switching method and device provided by the embodiment of the application, the terminal equipment acquires the indication information based on paging monitoring, and the BWP of the terminal equipment is switched according to the indication information. The indication information is transmitted through the transmission of the paging process related data in the paging monitoring, and when the paging process related data is transmitted on an air interface, the paging process related data of the terminal equipment with the same paging time are summarized into one piece and transmitted to the terminal equipment through a paging channel. Therefore, when the network device is to reduce the frequency domain range of data transmission and reception to save energy, it is only necessary to transmit the data related to the paging process by sending the PDCCH once, so as to instruct all terminal devices in the cell to complete BWP switching, thereby ensuring the consistency with the network device, and further saving PDCCH resources and reducing signaling overhead.

Drawings

Fig. 1 is a schematic diagram of system information update provided in an embodiment of the present application;

fig. 2 is a schematic diagram of an application scenario provided in an embodiment of the present application;

fig. 3 is a schematic diagram of BWP switching provided in an embodiment of the present application;

fig. 4 is a schematic view of an application scenario provided in an embodiment of the present application;

fig. 5 is a flow chart of a switching method provided in an embodiment of the present application;

fig. 6 is a schematic diagram of a BWP switching time provided in an embodiment of the present application;

fig. 7 is a second schematic diagram of BWP switching timing provided in the embodiment of the present application;

fig. 8 is a schematic diagram three of BWP switching timing provided in the embodiment of the present application;

fig. 9 is a flow chart of a switching method provided in an embodiment of the present application;

fig. 10 is a schematic structural diagram of a switching device according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a switching device according to 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 according to an embodiment of the present application.

Detailed Description

For ease of understanding, concepts related to the present application are explained first.

Terminal equipment: the device comprises a wireless receiving and transmitting function and can be matched with network equipment to provide communication service for users. In particular, a terminal device may refer to a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. For example, the terminal device may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network or a network after 5G, etc.

Network equipment: the network device may be a device for communicating with the terminal device, for example, may be a base station (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile Communication, GSM) or code division multiple access (Code Division Multiple Access, CDMA) communication system, may be a base station (NodeB, NB) in a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, may be an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a future 5G network or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, or the like.

The network devices involved in embodiments of the present application may also be referred to as radio access network (Radio Access Network, RAN) devices. The RAN equipment is connected with the terminal equipment and is used for receiving the data of the terminal equipment and sending the data to the core network equipment. The RAN devices correspond to different devices in different communication systems, e.g. to base stations and base station controllers in 2G systems, to base stations and Radio network controllers (Radio Network Controller, RNC) in 3G systems, to evolved base stations (Evolutional Node B, eNB) in 4G systems, and to access network devices (e.g. gNB, centralized unit CU, distributed unit DU) in 5G systems, such as New Radio, NR.

Physical downlink control channel: physical downlink control channel, PDCCH for short, is a set of physical resource elements, and carries uplink and downlink control information. The PDCCH mainly carries channel control information of a physical uplink shared channel (physical uplink shared channel, abbreviated PUSCH) and a physical downlink shared channel (physical downlink shared channel, abbreviated PDSCH). Within one subframe, there may be a plurality of PDCCHs. The UE first demodulates downlink control information (downlink control information, abbreviated as DCI) in the PDCCH to demodulate the corresponding PDSCH, including broadcast messages, paging messages, etc., at the corresponding resource location.

Wireless network temporary identification: radio Network Tempory Identity, RNTI for short. The network device sends the downlink control channel scrambled by the RNTI to the terminal device, and the terminal device can receive the downlink data channel based on the indication information in the downlink control channel scrambled by the RNTI, wherein different RNTIs can correspond to different downlink data channels. There are multiple RNTIs in the communication system, and in this embodiment of the present application, the paging RNTI (P-RNTI) is mainly referred to as a P-RNTI, which is used for identifying transmission of paging messages, where the P-RNTI is shared by all terminal devices. The terminal equipment can determine the resources occupied by the PDSCH corresponding to the P-RNTI through the PDCCH scrambled by the P-RNTI, thereby acquiring the paging message carried on the PDSCH.

RRC state: the terminal device and the network device communicate with each other through a wireless channel to exchange information with each other, and thus a control mechanism, which is RRC, is required to exchange information and agree between the terminal device and the network device. In LTE, the RRC states include an RRC IDLE state (rrc_idle) and an RRC CONNECTED state (rrc_connected). In 5G NR, an RRC INACTIVE state (rrc_inactive) is introduced in addition to an RRC idle state and an RRC connected state. In the RRC inactive state, the terminal device and the network device are in an unconnected state, but the context of the terminal device is still partially preserved, and in the RRC inactive state, the terminal device can be rapidly switched to the RRC connected state through a paging message or the like.

Rrc_idle: mobility is based on cell selection reselection of the UE, paging is initiated by the CN and paging areas are configured by the CN. The base station side does not have the UE AS context. There is no RRC connection.

Rrc_connected: there is an RRC connection and the base station and UE have a UE AS context. The network side knows that the location of the UE is cell specific. Mobility is network-side controlled mobility. Unicast data may be transmitted between the UE and the base station.

Rrc_inactive: mobility is cell selection reselection based on UE, there is a connection between CN-NRs, UE AS context exists on a certain base station, paging is triggered by RAN, paging area based on RAN is managed by RAN, network side knows UE location is based on paging area level of RAN.

Paging: the paging of the NR system mainly has 3 application scenes, namely paging initiated by a core network, paging initiated by gNB and notification of system information update initiated by gNB. The paging initiated by the core network is mainly aimed at the UE in the rrc_idle state, the paging initiated by the gNB is mainly aimed at the UE in the rrc_inactive state, and the notification of the system information update initiated by the gNB may be aimed at any one UE in the RRC state.

The paging message is carried on the PDSCH, the UE firstly monitors the PDCCH before receiving the paging message, when the PDCCH carries the P-RNTI, the UE acquires the information of demodulating the PDSCH from the PDCCH, and receives the PDSCH according to the relevant parameters of demodulating the PDSCH indicated on the PDCCH, thereby acquiring the paging message carried on the PDSCH.

Downlink control information: DCI may be used to indicate or transmit downlink scheduling information, for example, PDSCH used to carry paging messages may be scheduled, where the scheduling information may include frequency domain resources, time domain resources, power control commands, modulation coding schemes, and so on. In this embodiment of the present application, the DCI may be paging DCI, where the paging DCI may represent control information for scheduling a PDSCH carrying paging messages, or be used for indicating that the control information only carries short messages, or be used for indicating that the control information only carries scheduling information, or be used for indicating that the control information carries short messages and control information of scheduling information, or be used for indicating that the control information carries control information of short messages. The paging DCI may be scrambled using the P-RNTI.

System information update period: in an 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 (SIBs, system Information Block). When some system parameters of the cell are changed, for example, when part of parameters in SIB1 are changed, the UE may obtain a system information change indication by receiving DCI of the P-RNTI. Except for the notification of earthquake and tsunami warning system (Earthquake and Tsunami Warning System, ETWS)/commercial mobile warning system (Commercial Mobile Alert System, CMAS), the system information can be changed only in a specific radio frame, and the changing time is called an update period. In the same update period, the system information of the same content is transmitted according to the schedule. The system information update period is configured in the system information.

After the network device changes the system information, the UE is informed in the update period, i.e. the network device transmits the updated system information only in the next update period. Once the UE receives the system information change instruction, the UE will acquire new system information from the next update period, and before the UE acquires the new system information, the UE will transmit using the previous system information.

Fig. 1 is a schematic diagram of updating system information provided in the embodiment of the present application, as shown in fig. 1, when a network device is to update system information, the network device repeatedly sends a system information change instruction in an nth system information update period, where the system information change instruction is used to instruct a UE to perform a system information change. Then, the network device repeatedly transmits the changed system information in the (n+1) th system information update period.

The boundary of the system information change period is defined as SFN satisfying a system frame number (System Frame Number, abbreviated as SFN) SFN mod=0, where m is the number of SFNs included in one system information update period.

m=modifiationperiodic paging cycle, wherein modifiationperiodic periodic is a system information update period coefficient, and default paging cycle is a default paging period. Both parameters, modifiationperiodic and defaultPagingCycle, are broadcast by the network device.

The system information update period is applicable to the update of system information other than SIB6, SIB7, SIB8, and positioning assistance data. In NR, a short message (short message) in Paging DCI is used to inform a system information update indication, and a PDCCH in which Paging DCI is located is scrambled by a P-RNTI.

If the systeminfoModification value in the short message is 1, which means that other system information except SIB6/SIB7/SIB8 needs to be updated, the UE acquires the updated system information in the next system information updating period.

If the etwsandcmaseindication in the short message takes a value of 1, which indicates that the network is about to send the ETWS and/or CMAS notification, the UE re-reads SIB1 and SIB6/SIB7/SIB8 immediately after receiving the short message.

Next, a scenario to which the switching method in the present application is applied will be described with reference to fig. 2.

Fig. 2 is a schematic diagram of an application scenario provided in an embodiment of the present application. Referring to fig. 2, the network device 201 and the terminal device 202 are included, and wireless communication is possible between the network device 201 and the terminal device 202.

Wherein the network comprising the network device 201 and the terminal device 202 may also be referred to as a Non-terrestrial communication network (Non-Terrestrial Network, NTN), wherein NTN refers to a communication network between the terminal device and a satellite (which may also be referred to as a network device).

It can be appreciated that the technical solution of the embodiments of the present application may be applied to NR communication technologies, where NR refers to a new generation radio access network technology, and may be applied to future evolution networks, such as the fifth generation mobile communication (the 5th Generation Mobile Communication,5G) system. The scheme in the embodiment of the application can also be applied to other wireless communication networks such as wireless fidelity (Wireless Fidelity, WIFI), long-term evolution (Long Term Evolution, LTE) and the like, and corresponding names can be replaced by names of corresponding functions in the other wireless communication networks.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

The following is a description of the related art background of the present application.

Currently, 5G has evolved with the pursuit of speed, delay, high speed mobility, energy efficiency, and diversity, complexity of business in future life. The main application scenario of 5G is: enhanced mobile ultra-wideband (emmbb), low latency high reliability communication (URLLC), large-scale machine type communication (mctc). embbs still target users to obtain multimedia content, services, and data, and their demand is growing very rapidly. On the other hand, since the eMBB may be deployed in different scenarios, such as indoor, urban, rural, etc., the difference in capacity and demand is also relatively large. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety guarantee and the like. Typical characteristics of mctc include: high connection density, small data volume, delay insensitive traffic, low cost and long service life of the module, etc.

In order to provide a larger data transmission rate and improve user experience, the 5G NR further increases the system bandwidth on a 4G basis. In 5GNR, for frequency bands below 6GHz, the maximum bandwidth supported by a single carrier is 100MHz; for the frequency band above 6GHz, the maximum bandwidth supported by a single carrier is 400MHz.

For a large carrier bandwidth, such as 100MHz, the bandwidth that the terminal device needs to use is often very limited. If the terminal equipment is enabled to detect and measure on the whole bandwidth all the time, great challenges are brought to the power consumption of the terminal equipment, and the power saving of the terminal equipment is not facilitated. Therefore, the concept of BWP is introduced in 5 GNRs, that is, a part of continuous bandwidth is divided in the whole carrier with large bandwidth to transmit and receive data to and from the terminal device. The terminal equipment only needs to perform related operation in the part of the bandwidth configured by the network, thereby playing the role of energy saving of the terminal equipment.

Based on the 5G NR Rel-15 standard, it is provided that, for each serving cell of the terminal device, the network device may configure one or more BWP on this serving cell for the terminal device by means of an RRC reconfiguration message, the maximum number of configurable BWP being 4. At each moment, the terminal device can only have 1 active uplink BWP and 1 active downlink BWP on the serving cell, and the terminal device can only perform data transceiving on the active BWP. Considering the diversity of services of the terminal device and the variability of different service characteristics, the terminal device may have a need for adjusting BWP. For example, when a terminal device has a large traffic volume and desires to obtain a high-rate service, a large-bandwidth BWP needs to be used for data transmission for the terminal device; when the traffic of the terminal device is small, a small bandwidth BWP may be used for data transmission for this terminal device.

Fig. 3 is a schematic diagram of BWP switching provided in the embodiment of the present application, as shown in fig. 3, in the period of 0-t1, the traffic volume of the terminal device is larger, and at this time, the BWP activated by the terminal device may be switched to a BWP with a large bandwidth, i.e., BWP1 in fig. 3. During the period t1-t2 the traffic volume of the terminal device is small, at which time the terminal device activated BWP may be switched to a BWP of small bandwidth, i.e. BWP2 in fig. 3. In the period t2-t3, the terminal device switches the active BWP onto BWP3 as illustrated in fig. 3, etc., according to the service requirements of the terminal device.

As can be seen from the example of fig. 3, the BWP activated by the terminal device on this serving cell may be changed by means of BWP handover. The BWP switching methods supported in the current standard are 4 kinds:

first, BWP switching based on PDCCH. The switching method is a BWP switching controlled by the network device. The network device informs the target BWP of the single terminal device handover by transmitting a Cell-radio network temporary identity (C-RNTI) scrambled PDCCH to the single terminal device.

Second, BWP handover based on RRC reconfiguration. The switching method is also a BWP switch controlled by the network device. By carrying the firstactiondownbwp-Id or firstactionupbwp-Id in the RRC reconfiguration message, the terminal device is instructed to switch the activated BWP to the BWP corresponding to the firstactiondownbwp-Id or the BWP corresponding to the firstactionupbwp-Id.

Third, BWP switching is based on timer timeout. The switching method is a BWP switching in an implicit manner. The network device configures a timer bwp-InactivityTimer for each serving cell of the terminal device. If the current active downlink BWP of the terminal device is a BWP other than default BWP (default BWP) and initial BWP (initial BWP), the timer BWP-Inactigytimer is started or restarted each time the terminal device receives a PDCCH indicating uplink or downlink scheduling of the terminal device on the current active BWP, or the terminal device receives a PDCCH indicating uplink or downlink scheduling of the terminal device on the current active BWP. When the timer BWP-InactyityTimer times out, the terminal device automatically switches to default BWP or initial BWP, wherein both default BWP and initial BWP are determined by RRC configuration.

Fourth, a BWP handover is initiated by random access initialization. In the RACH initialization procedure, if the terminal device does not configure a random access occasion on the currently activated uplink BWP, the terminal device automatically switches UL BWP to initial UL BWP and simultaneously switches DL BWP to initial DL BWP.

In the current NR system, the base station mainly considers the traffic size of the terminal device, and instructs the terminal device to perform BWP handover based on the PDCCH scrambled by the C-RNTI, that is, the terminal device is switched to a narrow BWP when the traffic is small, and otherwise, the terminal device is switched to a wide BWP. Fig. 4 is a schematic application scenario provided in the embodiment of the present application, as shown in fig. 4, a cell served by a base station 40 includes a terminal device 41, a terminal device 42, and a terminal device 43, where the terminal device 41, the terminal device 42, and the terminal device 43 are all in a connection state.

In general, in order to increase system capacity, terminal devices in a connected state within a cell are not configured on the same BWP. For example, in the example of fig. 4, the BWP currently activated by terminal device 41 is BWP1, the BWP currently activated by terminal device 42 is BWP2, and the BWP currently activated by terminal device 43 is BWP3. Even though each terminal device currently supports only one active BWP, from the perspective of the base station 40, the base station 40 may need to use a larger frequency domain range for transceiving traffic data of a plurality of terminal devices in a cell due to a large number of terminal devices to be served, i.e. the frequency domain receiver range to be opened by the base station 40 is much larger than the transceiving bandwidth (e.g. active BWP bandwidth) of a single terminal device.

Opening a larger bandwidth for transceiving may provide higher system capacity and transmission efficiency, however, being detrimental to base station power saving. If the base station is capable of narrowing the frequency domain of data transmission and reception (e.g., narrowing to the initial BWP bandwidth), the receiver channel (e.g., the radio frequency channel) can be correspondingly reduced, and the power consumption of the base station can be saved. However, in order for the terminal device and the network to be consistent, the base station 40 needs to inform the affected terminal devices (e.g., terminal device 41, terminal device 42, and terminal device 43 illustrated in fig. 4) one by one, i.e., the base station needs to instruct a single terminal device to perform BWP handover with the PDCCH scrambled with the C-RNTI. On the one hand, this brings about a large signaling overhead, and on the other hand, the BWP switching of all the affected terminal devices may not be completed in a short time due to the limitation of PDCCH resources, that is, a large delay may be brought, and the base station energy saving may not be achieved rapidly.

Based on the above technical problems, the embodiments of the present application provide a BWP switching scheme, which implements BWP switching of terminal devices in a cell on the premise of saving PDCCH resources. The following will describe the scheme of the present application.

Fig. 5 is a flow chart of a handover method provided in an embodiment of the present application, where the method is applied to a terminal device, and the terminal device is in a connected state, as shown in fig. 5, and the method may include:

s51, acquiring indication information based on paging monitoring.

A plurality of connected state terminal devices are included in one cell, and typically the plurality of connected state terminal devices are configured on different BWP. Because the network device needs to serve a large number of terminal devices, the network device needs to use a larger frequency domain range to perform the first time of service data of a plurality of terminal devices in a cell, which is not beneficial to energy saving of the network device.

When the network device needs to reduce the frequency domain range of data transmission and reception to save energy, in order to keep the terminal device and the network device consistent, the network device needs to instruct the terminal device to perform BWP handover.

In the embodiment of the application, the terminal device may acquire the indication information from the network device based on paging listening. Wherein paging listening is used for transmission of paging procedure related data. The paging listening may include a PDCCH scrambled by a P-RNTI from the network device being listened to, and may further include a PDSCH received according to paging downlink control information in the PDCCH. The terminal equipment can acquire the indication information by monitoring the PDCCH scrambled by the P-RNTI, and can also acquire the indication information by receiving the PDSCH.

Specifically, when a common search space is configured on the BWP currently activated by the terminal device in the connected state, for example, a paging search space, the terminal device may monitor the PDCCH scrambled by the P-RNTI on the paging search space, thereby acquiring the indication information. In this embodiment, the indication information may be located in paging downlink control information, for example, and the terminal device acquires the paging downlink control information by monitoring a PDCCH scrambled by the P-RNTI on the paging search space, thereby acquiring the indication information in the paging downlink control information.

The indication information may also be located in the paging message when the network device sends the paging message. Because the paging message is carried on the PDSCH, the terminal equipment can acquire the paging downlink control information by monitoring the PDCCH scrambled by the P-RNTI, and receive the PDSCH by the paging downlink control information, thereby acquiring the paging message carried on the PDSCH and acquiring the indication information in the paging message.

S52, switching the bandwidth part BWP of the terminal device according to the indication information.

After the terminal device obtains the indication information, the terminal device switches the currently activated BWP to a certain target BWP according to the indication information. Since the network device instructs the terminal device to perform BWP handover based on the paging listening transmission instruction information, the instruction information acquired by the terminal device in the connection state in the cell is the same, and thus the terminal device in the connection state in the cell may be handed over to the same BWP after performing BWP handover. And the network equipment can reduce the frequency domain range of data transceiving after sending the indication information based on paging monitoring. The network device may shrink the frequency domain range of the transceiving to be the same as or larger than the BWP after the terminal device is switched.

According to the switching method provided by the embodiment of the application, the terminal equipment acquires the indication information based on paging monitoring, and switches BWP of the terminal equipment according to the indication information, the indication information is transmitted through transmission of paging process related data in the paging monitoring, and when the paging process related data is transmitted on an air interface, the paging process related data of the terminal equipment with the same paging time are summarized into one piece and transmitted to the terminal equipment through a paging channel. Therefore, when the network device is to reduce the frequency domain range of data transmission and reception to save energy, it is only necessary to transmit the data related to the paging process by sending the PDCCH once, so as to instruct all the terminal devices in the cell to complete BWP switching, thereby ensuring the consistency with the network device, and further saving PDCCH resources and reducing signaling overhead.

The following describes the scheme of the present application in detail with reference to the accompanying drawings.

When the network device needs to reduce the frequency domain range of data transceiving to save energy, the terminal device needs to be instructed to perform BWP handover, i.e. instruct the terminal device to switch the currently activated BWP to another BWP. In the embodiment of the application, the network device sends the indication information based on paging interception, wherein the paging interception comprises a monitored PDCCH scrambled by a P-RNTI from the network device, or a PDSCH received according to paging DCI in the PDCCH.

When paging listening includes a monitored P-RNTI scrambled PDCCH from a network device, the indication information may be located in a paging dci. The terminal equipment acquires the paging DCI by monitoring the PDCCH, thereby acquiring the indication information. In this embodiment, a paging message may or may not be present.

When the indication information is located in the paging DCI, the terminal equipment can obtain the indication information directly according to the paging DCI after obtaining the paging DCI. The paging DCI is carried in the PDCCH, and when the indication information is located in the paging DCI, one possible implementation manner is that the indication information may be located in a reserved bit in paging DCI format 1_0 in the paging DCI, and another possible implementation manner is that the indication information may also be located in a reserved bit in a short message of the paging DCI.

For paging DCI format 1_0, the following information is transmitted through paging DCI format 1_0, the CRC is scrambled by the P-RNTI:

short message indicator-2 bits.

Short message-8 bits. If only paging scheduling information is carried, the bit field is reserved.

Bits. If only short messages are carried, the bit field is reserved, wherein,to control the size of resource set CORESET 0.

Time domain resource allocation-4 bits. If only short messages are carried, the bit field is reserved.

Mapping of virtual resource blocks (virtual resource block, VRBs for short) to physical resource blocks (physical resource block, PRBs for short) -1 bit. If only short messages are carried, the bit field is reserved.

Modulation and coding scheme. If only short messages are carried, the bit field is reserved.

TB scales by-2 bits. If only short messages are carried, the bit field is reserved.

Reserved bits-8 bits for operation in cells with shared spectrum channel access; otherwise, it is 6 bits.

Wherein the indication information may be located in a reserved bit in paging DCI format 1_0.

A short message for paging DCI comprising:

system information modification-if set to 1: indicating broadcast control channel (Broadcast Control Channel, abbreviated BCCH) modifications other than SIB6, SIB7 and SIB 8.

etwsandcmaseindication-if set to 1: indicating an ETWS primary notification and/or an ETWS secondary notification and/or a CMAS notification.

Stop paging monitoring-if there is nrofPDCCH-monitoringoccidionssb-InPO, this bit can only be used for shared spectrum channel access operations. If set to 1: the UE is instructed to stop listening to PDCCH occasions for paging in the paging occasion.

Reserved bit-8 bits, not used in the present version of the specification, should be ignored by the UE if received.

The indication information may be located in a reserved bit in a short message of the paging DCI.

The above embodiments describe the case where the indication information is located in the paging dci when paging listening to the PDCCH including the listening P-RNTI. When there is a paging message, the paging listening may further include a PDSCH received according to paging DCI in the PDCCH, and the indication information may be located in the paging message carried on the PDSCH. The terminal equipment can acquire the paging DCI by monitoring the PDCCH, and can acquire the paging message borne on the PDSCH according to the corresponding PDSCH of the paging DCI scheduling, so as to acquire the indication information.

In the embodiment of the present application, the terminal device in a connected state is targeted, so that the application scenario corresponding to the paging message is a notification of system information update initiated by the network device. When the indication information is located in the paging message, the terminal equipment obtains the indication information in the paging message by scheduling the PDSCH through the paging DCI after obtaining the paging DCI and obtaining the paging message loaded on the PDSCH. Specifically, when the indication information is located in the paging message, 1-bit information may be extended in the paging RRC message as the indication information, so as to instruct the terminal device to perform BWP handover.

After the terminal device obtains the indication information, the BWP is switched according to the indication information, wherein the indication information may include at least one of BWP switching indication and identification of the first BWP.

Specifically, the indication information may include only the BWP switch indication, the indication information may include only the identifier of the first BWP, and the indication information may also include the BWP switch indication and the identifier of the first BWP. When the contents included in the indication information are different, the terminal device performs corresponding BWP switching operation according to the indication information, which will be described below.

First, the first BWP will be described.

The first BWP may be initial BWP (initial BWP) or may be a network energy-saving BWP. Wherein the initial BWP is preconfigured, and 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 domain range of data transmission and reception after sending the indication information based on paging listening. The network device may reduce the frequency domain of data transmission and reception to the initial BWP, or may reduce the frequency domain of data transmission and reception to a bandwidth slightly wider than the initial BWP.

The network energy-saving BWP is a BWP configured by the network device. In one embodiment, the network device may configure the network energy-saving BWP through system information broadcasting, and the terminal device acquires the network energy-saving BWP by acquiring the broadcasted system information. In another embodiment, the network device may configure the network energy saving BWP through an RRC message, and the terminal device acquires the network energy saving BWP by acquiring 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 domain range of data transmission and reception after sending the indication information based on paging listening. The network device may reduce the frequency domain of data transmission and reception to the network energy-saving BWP, or may reduce the frequency domain of data transmission and reception to a bandwidth slightly wider than the network energy-saving BWP.

The content included in the indication information will be described below.

When the BWP switch indication is included in the indication information, the BWP switch indication may be used to instruct the terminal device to receive the 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 identification of the first BWP.

For example, when the indication information is located in the paging message, 1-bit information may be extended in the paging message as the BWP switch indication, and the terminal device acquires the BWP switch indication by acquiring the paging message; for example, when the indication information is located in the reserved bit in paging DCI format 1_0, the BWP switch indication may be included in the reserved bit in paging DCI format 1_0, and the terminal device acquires the BWP switch indication by acquiring the reserved bit in paging DCI format 1_0; for example, when the indication information is located in a reserved bit in a short message in the paging DCI, the BWP handover indication may be included in the reserved bit in the short message in the paging DCI, and the terminal device acquires the BWP handover indication by acquiring the reserved bit in the short message in the paging DCI.

After the BWP switch indication is acquired, BWP switch may be performed according to the BWP switch indication.

Fig. 6 is a schematic diagram of a BWP switching time provided in the embodiment of the present application, as shown in fig. 6, where the terminal device obtains indication information at time a in the SI update period n, and the indication information indicates that the terminal device receives system information in the next system information update period, and switches the current BWP to the first BWP according to the system information, where the system information includes an identifier of the first BWP.

Then, the terminal device receives the system information at the time when the next SI update period, i.e., SI update period n+1, starts (i.e., time B illustrated in fig. 8), acquires the identity of the first BWP in SIB1, and switches the currently activated BWP onto the first BWP. Wherein the first BWP is an initial BWP, and the terminal device switches the current BWP to the initial BWP; when the first BWP is a network energy saving BWP, the terminal device switches the current BWP onto the network energy saving BWP.

By acquiring the identification of the first BWP from the system information at the beginning of the next system information update period, BWP switching is performed, so that no updated BWP is required to be indicated in the indication information, and bits to be used in the indication information are reduced.

When the BWP switch indication is included in the indication information, the BWP switch indication may also be used to instruct the terminal device to switch the current BWP to the first BWP. After the terminal device obtains the BWP switch indication, the terminal device can switch the current BWP to the first BWP according to the BWP switch indication.

For example, when the indication information is located in the paging message, 1-bit information may be extended in the RRC message of the paging message as the BWP switch indication for indicating switching of the current BWP onto the first BWP. And after the terminal equipment acquires the BWP switching indication, switching the current BWP to the first BWP by default according to the BWP switching indication.

For example, when the indication information is located in the reserved bit in paging DCI format 1_0, a BWP switch indication may be included in the reserved bit in paging DCI format 1_0 for indicating that the current BWP is switched onto the first BWP. After the terminal device acquires the BWP switch indication by acquiring the reserved bit in paging DCI format 1_0, the current BWP is switched to the first BWP by default according to the BWP switch indication.

For example, when the indication information is located in a reserved bit in a short message in the paging DCI, a BWP switch indication may be included in the reserved bit in the short message in the paging DCI, for indicating that the current BWP is switched to the first BWP. After the terminal device acquires the BWP switching indication by acquiring the reserved bit in the short message in the paging DCI, the current BWP is switched to the first BWP by default according to the BWP switching indication.

Wherein, when the first BWP is an initial BWP, the terminal device switches the current BWP to the initial BWP according to the BWP switch indication; when the first BWP is a network energy saving BWP, the terminal device switches the current BWP to the network energy saving BWP according to the BWP switch indication.

When the indication information includes an identification of the first BWP, the identification of the first BWP is used to instruct the terminal device to switch the current BWP to the first BWP.

For example, 1-bit information may be extended in the RRC message of the paging message as an identification of the first BWP, which is used to indicate that the current BWP is switched onto the first BWP. When the terminal device acquires the identifier of the first BWP, the currently activated BWP is switched to the first BWP according to the identifier of the first BWP. The first BWP may be an initial BWP or a network energy-saving BWP. When the first BWP is an initial BWP, the indication information includes an identification of the initial BWP, for indicating that the current BWP of the terminal device is switched to the initial BWP; when the first BWP is a network energy saving BWP, the indication information includes an identification of the network energy saving BWP for indicating that the current BWP of the terminal device is switched to the network energy saving BWP.

For example, when the indication information is located in the reserved bit in paging DCI format 1_0, an identification of the first BWP may be included in the reserved bit in paging DCI format 1_0 for indicating that BWP is switched onto the first BWP. After the terminal device acquires the identity of the first BWP by acquiring the reserved bit in paging DCI format 1_0, the currently active BWP is switched to the first BWP according to the identity of the first BWP. The first BWP may be an initial BWP or a network energy-saving BWP. When the first BWP is an initial BWP, the indication information includes an identification of the initial BWP, for indicating to switch the BWP of the terminal device to the initial BWP; when the first BWP is a network energy saving BWP, the indication information includes an identification of the network energy saving BWP for indicating that the BWP of the terminal device is switched to the network energy saving BWP.

For example, when the indication information is located in a reserved bit in a short message in the paging DCI, an identifier of a first BWP may be included in the reserved bit in the short message in the paging DCI, for indicating that the BWP is switched to the first BWP. After the terminal device acquires the identifier of the first BWP by acquiring the reserved bit in the short message in the paging DCI, the currently activated BWP is switched to the first BWP according to the identifier of the first BWP. The first BWP may be an initial BWP or a network energy-saving BWP. When the first BWP is an initial BWP, the indication information includes an identification of the initial BWP, for indicating to switch the BWP of the terminal device to the initial BWP; when the first BWP is a network energy saving BWP, the indication information includes an identification of the network energy saving BWP for indicating that the BWP of the terminal device is switched to the network energy saving BWP.

When the BWP switch indication and the identification of the first BWP are included in the indication information, the BWP switch indication and the identification of the first BWP are used to instruct the terminal device to switch the current BWP to the first BWP.

For example, a BWP switch indication and an identification of the first BWP may be located in the paging message for indicating that the current BWP is switched onto the first BWP. And after the terminal equipment acquires the BWP switching indication and the identification of the first BWP, switching the currently activated BWP to the first BWP according to the BWP switching indication and the identification of the first BWP. The first BWP may be an initial BWP or a network energy-saving BWP. When the first BWP is an initial BWP, the indication information includes a BWP switching indication and an identification of the initial BWP, for indicating that the current BWP of the terminal device is switched to the initial BWP; when the first BWP is a network energy saving BWP, the indication information includes a BWP switch indication and an identification of the network energy saving BWP for indicating that the current BWP of the terminal device is switched to the network energy saving BWP.

For example, when the indication information is located in the reserved bit in paging DCI format 1_0, a BWP switch indication and an identification of the first BWP may be included in the reserved bit in paging DCI format 1_0 for indicating that the current BWP is switched onto the first BWP. And after the terminal equipment acquires the BWP switching indication and the identification of the first BWP, switching the currently activated BWP to the first BWP according to the BWP switching indication and the identification of the first BWP. The first BWP may be an initial BWP or a network energy-saving BWP. When the first BWP is an initial BWP, the indication information includes a BWP switching indication and an identification of the initial BWP, for indicating that the current BWP of the terminal device is switched to the initial BWP; when the first BWP is a network energy saving BWP, the indication information includes a BWP switch indication and an identification of the network energy saving BWP for indicating that the current BWP of the terminal device is switched to the network energy saving BWP.

For example, when the indication information is located in a reserved bit in a short message in the paging DCI, a BWP switch indication and an identification of a first BWP may be included in the reserved bit in the short message in the paging DCI, for indicating that the current BWP is switched to the first BWP. And after the terminal equipment acquires the BWP switching indication and the identification of the first BWP, switching the currently activated BWP to the first BWP according to the BWP switching indication and the identification of the first BWP. The first BWP may be an initial BWP or a network energy-saving BWP. When the first BWP is an initial BWP, the indication information includes a BWP switching indication and an identification of the initial BWP, for indicating that the current BWP of the terminal device is switched to the initial BWP; when the first BWP is a network energy saving BWP, the indication information includes a BWP switch indication and an identification of the network energy saving BWP for indicating that the current BWP of the terminal device is switched to the network energy saving BWP.

When the indication information is used to indicate that the current BWP is switched to the first BWP, the terminal device may switch the current BWP to the first BWP according to the indication information after the terminal device acquires the indication information. Specifically, after the terminal device obtains the indication information, the terminal device switches the current BWP of the terminal device to the first BWP according to the indication information at a first time, where the first time has two possibilities, which are described below.

A possible implementation manner is that the terminal device immediately performs BWP switching after acquiring the indication information, i.e. the first time is the time of acquiring the indication information. Fig. 7 is a second schematic diagram of BWP switching time provided in the embodiment of the present application, as shown in fig. 7, at time a, the terminal device obtains indication information, where the indication information indicates that BWP switching is performed, so that the BWP currently activated by the terminal device is switched to the first BWP at time a, where time a shown in fig. 7 is a first time, and in this embodiment of the present application, the first time is the time when the indication information is obtained.

The solution illustrated in fig. 7 performs BWP switching at the moment of acquiring the indication information, so that fast BWP switching can be implemented, and the time delay is reduced.

Another possible implementation manner is that the terminal device waits until the start of the next system information update period after acquiring the indication information to perform BWP handover, i.e. the first time is the time when the next system information update period starts. Fig. 8 is a schematic diagram three of BWP switching time provided in the embodiment of the present application, as shown in fig. 8, at time a in the SI update period n, the terminal device obtains indication information, where the indication information indicates that BWP switching is performed. Then, after acquiring the indication information, the terminal device waits until the next system information update period (i.e., SI update period n+1) starts, and the next system information update period start time is time B illustrated in fig. 8. In fig. 8, time B is the first time.

The solution illustrated in fig. 8 enables all terminal devices within a cell to perform BWP handover simultaneously, thereby keeping in agreement with the network device.

Fig. 9 is a flowchart of a handover method according to an embodiment of the present application, where the method is applied to a network device, as shown in fig. 9, and the method includes:

s91, sending indication information based on paging monitoring, wherein the indication information is used for indicating the BWP of the switching terminal equipment, and the terminal equipment is in a connection state.

In one possible implementation, the paging listening includes at least one of:

the transmitted P-RNTI scrambled PDCCH;

PDSCH transmitted according to the paging downlink control information in the PDCCH.

In one possible implementation, the paging listening includes a transmitted P-RNTI scrambled PDCCH;

the indication information is located in paging downlink control information.

In a possible implementation manner, the indication information is located in a reserved bit in a paging downlink control information format 1_0 in the paging downlink control information; or,

and the indication information is positioned at reserved bits in the short message of the paging downlink control information.

In a possible implementation manner, the paging listening includes PDSCH sent according to paging downlink control information in the PDCCH;

The indication information is located in a paging message carried on the PDSCH.

In a possible implementation manner, the indication information includes at least one of the following:

BWP switch indication;

identification of the first BWP.

In a possible implementation, the indication information includes the BWP switch indication; the BWP switch indication is configured to instruct the terminal device to receive system information in a next system information update period, and switch the current BWP to a first BWP according to the system information, where the system information includes an identifier of the first BWP.

In a possible implementation, the indication information includes the BWP switch indication; the BWP switch indication is used to instruct the terminal device to switch the current BWP to the first BWP.

In a possible implementation, the indication information includes an identification of the first BWP; the identification of the first BWP is used to instruct the terminal device to switch the current BWP to the first BWP.

In a possible implementation manner, the indication information includes the BWP switch indication and an identification of the first BWP; the BWP switch indication and the identification of the first BWP are used to instruct the terminal device to switch the current BWP to the first BWP.

In a possible implementation, the indication information is used to instruct the terminal device to switch the current BWP to the first BWP at the first moment.

In one possible embodiment, the first time is any one of the following:

the moment of acquiring the indication information;

the next system information update period starts.

In one possible embodiment, the first BWP is any one of the following:

initial BWP;

network energy saving BWP configured for the network device.

In a possible implementation manner, the network energy-saving BWP is configured by the network device through system information; or,

the network energy-saving BWP is configured for 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 a specific implementation scheme is described in the foregoing embodiment, which is not described herein again.

According to the switching method provided by the embodiment of the application, the terminal equipment acquires the indication information based on paging monitoring, and switches BWP of the terminal equipment according to the indication information, the indication information is transmitted through transmission of paging process related data in the paging monitoring, and when the paging process related data is transmitted on an air interface, the paging process related data of the terminal equipment with the same paging time are summarized into one piece and transmitted to the terminal equipment through a paging channel. Therefore, when the network device is to reduce the frequency domain range of data transmission and reception to save energy, it is only necessary to transmit the data related to the paging process by sending the PDCCH once, so as to instruct all the terminal devices in the cell to complete BWP switching, thereby ensuring the consistency with the network device, and further saving PDCCH resources and reducing signaling overhead. Further, when the indication information indicates to switch to the first BWP, the BWP switching may be performed immediately when the indication information is acquired, so that an effect of fast BWP switching may be achieved, and the BWP switching may be performed until the next system information update period starts, so that all terminal devices perform the BWP switching at the same time, and keep consistent with the network device; when the indication information indicates to switch BWP, the updated BWP may be acquired at the start of the next system information update period and switched to the updated BWP, so that bits to be used in the indication information may be reduced.

Fig. 10 is a schematic structural diagram of a switching device according to an embodiment of the present application, and as shown in fig. 10, the switching device 100 includes:

an acquisition module 101, configured to acquire indication information based on paging listening;

and a switching module 102, configured to switch the BWP of the terminal device according to the indication information, where the terminal device is in a connected state.

In one possible implementation, the paging listening includes at least one of:

a physical downlink control channel PDCCH scrambled by a paging radio network temporary identifier P-RNTI from the network equipment is monitored;

and receiving a physical downlink shared channel PDSCH according to the paging downlink control information in the PDCCH.

In one possible implementation, the paging listening comprises a monitored P-RNTI scrambled PDCCH from a network device;

the indication information is located in paging downlink control information.

In one possible implementation, the paging listening includes PDSCH received according to paging downlink control information in the PDCCH;

The indication information is located in a paging message carried on the PDSCH.

In one possible embodiment, the indication information includes at least one of:

BWP switch indication;

identification of the first BWP.

In a possible implementation, the indication information includes the BWP switch indication; the BWP switch indication is used for indicating that system information is received in a next system information update period, and switching the current BWP to the first BWP according to the system information, wherein the system information comprises an identifier of the first BWP.

In a possible implementation, the indication information includes the BWP switch indication; the BWP switch indication is used to indicate a switch of the current BWP to the first BWP.

In a possible implementation, the indication information includes an identification of the first BWP; the identification of the first BWP is used to indicate that the current BWP is switched to the first BWP.

In a possible implementation manner, the indication information includes the BWP switch indication and an identification of the first BWP; the BWP switch indication and the identification of the first BWP are used to indicate switching of a current BWP to the first BWP.

In a possible implementation, the indication information is used to indicate that the current BWP is switched to the first BWP at the first moment.

In one possible embodiment, the first time is any one of the following:

the moment of acquiring the indication information;

the next system information update period starts.

In one possible embodiment, the first BWP is any one of the following:

initial BWP;

network energy saving BWP configured for the network device.

The switching device provided in the embodiment of the present application may execute the technical solution shown in the foregoing method embodiment, and its implementation principle and beneficial effects are similar, and will not be described herein again.

Fig. 11 is a schematic structural diagram of a switching device according to an embodiment of the present application, as shown in fig. 11, the switching device 110 includes:

a sending module 111, configured to send indication information based on paging listening, where the indication information is used to indicate a BWP of a terminal device, and the terminal device is in a connected state.

In one possible implementation, the paging listening includes at least one of:

The transmitted P-RNTI scrambled PDCCH;

the indication information is located in paging downlink control information.

the indication information is located in a paging message carried on the PDSCH.

BWP switch indication;

identification of the first BWP.

In one possible embodiment, the first time is any one of the following:

the moment of acquiring the indication information;

the next system information update period starts.

In one possible embodiment, the first BWP is any one of the following:

initial BWP;

network energy saving BWP configured for the network device.

Fig. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application. Referring to fig. 12, the terminal device 120 may include: a transceiver 121, a memory 122, a processor 123. The transceiver 121 may include: a transmitter and/or a receiver. The transmitter may also be referred to as a transmitter, transmit port, transmit interface, or the like, and the receiver may also be referred to as a receiver, receive port, receive interface, or the like. Illustratively, the transceiver 121, the memory 122, and the processor 123 are interconnected by a bus 124.

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 cause the terminal device 120 to execute any of the above-described handover methods.

The receiver of the transceiver 121 may be used to perform the receiving function of the terminal device in the above-mentioned handover method.

Fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present application. Referring to fig. 13, the network device 130 may include: a transceiver 131, a memory 132, a processor 133. The transceiver 131 may include: a transmitter and/or a receiver. The transmitter may also be referred to as a transmitter, transmit port, transmit interface, or the like, and the receiver may also be referred to as a receiver, receive port, receive interface, or the like. Illustratively, the transceiver 131, the memory 132, and the processor 133 are interconnected by 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 cause the terminal device 130 to execute any of the above-described handover methods.

The receiver of the transceiver 131 may be configured to perform the receiving function of the terminal device in the above-mentioned handover method.

Embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for implementing the above-described handover method when the computer-executable instructions are executed by a processor.

Embodiments of the present application may also provide a computer program product, which may be executed by a processor, and when the computer program product is executed, may implement a handover method executed by any of the above-mentioned terminal devices or network devices.

The communication device, the computer readable storage medium and the computer program product of the embodiments of the present application may execute the handover method executed by the terminal device and the network device, and specific implementation processes and beneficial effects thereof are referred to above and are not described herein again.

In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The aforementioned computer program may be stored in a computer readable storage medium. The computer program, when executed by a processor, implements steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

A handover method, applied to a terminal device, where the terminal device is in a connected state, the method comprising:

acquiring indication information based on paging monitoring;

and switching the bandwidth part BWP of the terminal equipment according to the indication information.
The handover method according to claim 1, wherein the paging listening comprises at least one of:

a physical downlink control channel PDCCH scrambled by a paging radio network temporary identifier P-RNTI from the network equipment is monitored;

and receiving a physical downlink shared channel PDSCH according to the paging downlink control information in the PDCCH.
The handover method according to claim 1 or 2, wherein the paging listening comprises a P-RNTI scrambled PDCCH from a network device being listening;

The indication information is located in paging downlink control information.
The handover method according to claim 3, wherein the indication information is located in a reserved bit in a paging downlink control information format 1_0 in the paging downlink control information; or,

and the indication information is positioned at reserved bits in the short message of the paging downlink control information.
The handover method according to claim 1 or 2, wherein the paging listening comprises PDSCH received according to paging downlink control information in PDCCH;

the indication information is located in a paging message carried on the PDSCH.
The handover method according to any one of claims 1-5, wherein the indication information includes at least one of:

BWP switch indication;

identification of the first BWP.
The handover method according to claim 6, wherein the indication information includes the BWP handover indication; the BWP switch indication is used for indicating that system information is received in a next system information update period, and switching the current BWP to the first BWP according to the system information, wherein the system information comprises an identifier of the first BWP.
The handover method according to claim 6, wherein the indication information includes the BWP handover indication; the BWP switch indication is used to indicate a switch of the current BWP to the first BWP.
The handover method according to claim 6, wherein the indication information includes an identification of the first BWP; the identification of the first BWP is used to indicate that the current BWP is switched to the first BWP.
The handover method according to claim 6, wherein the indication information includes the BWP handover indication and an identification of the first BWP; the BWP switch indication and the identification of the first BWP are used to indicate switching of a current BWP to the first BWP.
The switching method according to any one of claims 8-10, wherein the indication information is used to indicate that the current BWP is switched to the first BWP at the first moment.
The handover method according to claim 11, wherein the first time is any one of:

the moment of acquiring the indication information;

the next system information update period starts.
The switching method according to any one of claims 6-12, wherein the first BWP is any one of the following:

Initial BWP;

network energy saving BWP configured for the network device.
The handover method according to claim 13, wherein the network energy-saving BWP is configured by system information for the network device; or,

the network energy-saving BWP is configured for the network device through a radio resource control RRC message.
A method of handover, for use with a network device, the method comprising:

and sending indication information based on paging monitoring, wherein the indication information is used for indicating the BWP of the switching terminal equipment, and the terminal equipment is in a connected state.
The handover method according to claim 15, wherein the paging listening comprises at least one of:

the transmitted P-RNTI scrambled PDCCH;

PDSCH transmitted according to the paging downlink control information in the PDCCH.
The handover method according to claim 15 or 16, wherein the paging listening comprises a transmitted P-RNTI scrambled PDCCH;

the indication information is located in paging downlink control information.
The handover method according to claim 17, wherein the indication information is located in a reserved bit in a paging downlink control information format 1_0 in the paging downlink control information; or,

And the indication information is positioned at reserved bits in the short message of the paging downlink control information.
The handover method according to claim 15 or 16, wherein the paging listening comprises PDSCH transmitted according to paging downlink control information in PDCCH;

the indication information is located in a paging message carried on the PDSCH.
The handover method according to any one of claims 15-19, wherein the indication information includes at least one of:

BWP switch indication;

identification of the first BWP.
The handover method according to claim 20, wherein the indication information includes the BWP handover indication; the BWP switch indication is configured to instruct the terminal device to receive system information in a next system information update period, and switch the current BWP to a first BWP according to the system information, where the system information includes an identifier of the first BWP.
The handover method according to claim 20, wherein the indication information includes the BWP handover indication; the BWP switch indication is used to instruct the terminal device to switch the current BWP to the first BWP.
The handover method according to claim 20, wherein the indication information includes an identification of the first BWP; the identification of the first BWP is used to instruct the terminal device to switch the current BWP to the first BWP.
The handover method according to claim 20, wherein the indication information includes the BWP handover indication and an identification of the first BWP; the BWP switch indication and the identification of the first BWP are used to instruct the terminal device to switch the current BWP to the first BWP.
The handover method according to any one of claims 22-24, wherein the indication information is used to instruct the terminal device to switch a current BWP to the first BWP at a first time instant.
The handover method according to claim 25, wherein the first time is any one of:

the moment of sending the indication information;

the next system information update period starts.
The switching method according to any one of claims 20-26, wherein the first BWP is any one of the following:

initial BWP;

and network energy-saving BWP configured for the network device.
The handover method according to claim 27, wherein the network energy-saving BWP is configured by system information for the network device; or,

the network energy-saving BWP is configured for the network device through an RRC message.
A switching device, comprising:

the acquisition module is used for acquiring indication information based on paging monitoring;

and the switching module is used for switching the BWP of the terminal equipment according to the indication information, wherein the terminal equipment is in a connection state.
The handover apparatus of claim 29, wherein the paging listening comprises at least one of:

the monitored P-RNTI from the network equipment scrambles the PDCCH;

PDSCH received according to the paging downlink control information in the PDCCH.
The switching apparatus according to claim 29 or 30, wherein the paging listening comprises a listening P-RNTI scrambled PDCCH from a network device;

the indication information is located in paging downlink control information.
The switching apparatus according to claim 31, wherein the indication information is located in a reserved bit in paging downlink control information format 1_0 in the paging downlink control information; or,

and the indication information is positioned at reserved bits in the short message of the paging downlink control information.
The switching apparatus according to claim 29 or 30, wherein the paging listening comprises PDSCH received according to paging downlink control information in PDCCH;

The indication information is located in a paging message carried on the PDSCH.
The switching device according to any one of claims 29-33, wherein the indication information comprises at least one of:

BWP switch indication;

identification of the first BWP.
The switching device according to claim 34, wherein the indication information comprises the BWP switching indication; the BWP switch indication is used for indicating that system information is received in a next system information update period, and switching the current BWP to the first BWP according to the system information, wherein the system information comprises an identifier of the first BWP.
The switching device according to claim 34, wherein the indication information comprises the BWP switching indication; the BWP switch indication is used to indicate a switch of the current BWP to the first BWP.
The switching device according to claim 34, wherein the indication information comprises an identification of the first BWP; the identification of the first BWP is used to indicate that the current BWP is switched to the first BWP.
The switching device according to claim 34, wherein the indication information comprises the BWP switch indication and an identification of the first BWP; the BWP switch indication and the identification of the first BWP are used to indicate switching of a current BWP to the first BWP.
The switching device according to any one of claims 36-38, wherein the indication information is used to indicate that a current BWP is switched to the first BWP at a first moment.
The switching device of claim 39, wherein the first time is any one of:

the moment of acquiring the indication information;

the next system information update period starts.
The switching device according to any one of claims 34-40, wherein the first BWP is any one of the following:

initial BWP;

network energy saving BWP configured for the network device.
The switching apparatus of claim 41 wherein the network energy-efficient BWP is configured by system information for the network device; or,

the network energy-saving BWP is configured for the network device through an RRC message.
A switching device, comprising:

and the sending module is used for sending indication information based on paging monitoring, wherein the indication information is used for indicating the BWP of the switching terminal equipment, and the terminal equipment is in a connection state.
The handover apparatus of claim 43, wherein the paging listening comprises at least one of:

The transmitted P-RNTI scrambled PDCCH;

PDSCH transmitted according to the paging downlink control information in the PDCCH.
The handover apparatus of claim 43 or 44, wherein the paging listening comprises a transmitted P-RNTI scrambled PDCCH;

the indication information is located in paging downlink control information.
The switching apparatus according to claim 45, wherein the indication information is located in a reserved bit in paging downlink control information format 1_0 in the paging downlink control information; or,

and the indication information is positioned at reserved bits in the short message of the paging downlink control information.
The handover apparatus of claim 43 or 44, wherein the paging listening comprises a PDSCH transmitted according to paging downlink control information in a PDCCH;

the indication information is located in a paging message carried on the PDSCH.
The switching device according to any one of claims 43 to 47, wherein the indication information includes at least one of:

BWP switch indication;

identification of the first BWP.
The switching device of claim 48, wherein the indication information includes the BWP switching indication; the BWP switch indication is configured to instruct the terminal device to receive system information in a next system information update period, and switch the current BWP to a first BWP according to the system information, where the system information includes an identifier of the first BWP.
The switching device of claim 48, wherein the indication information includes the BWP switching indication; the BWP switch indication is used to instruct the terminal device to switch the current BWP to the first BWP.
The switching device of claim 48, wherein the indication information includes an identification of the first BWP; the identification of the first BWP is used to instruct the terminal device to switch the current BWP to the first BWP.
The switching device of claim 48, wherein the indication information includes the BWP switch indication and an identification of the first BWP; the BWP switch indication and the identification of the first BWP are used to instruct the terminal device to switch the current BWP to the first BWP.
The switching device according to any one of claims 50-52, wherein the indication information is used to instruct the terminal device to switch a current BWP to the first BWP at a first moment.
The switching device of claim 53, wherein the first time is any one of:

the moment of sending the indication information;

the next system information update period starts.
The switching device according to any one of claims 48-54, wherein the first BWP is any one of the following:

initial BWP;

network energy saving BWP configured for the network device.
The switching apparatus of claim 55, wherein the network energy-saving BWP is configured by system information for the network device; or,

the network energy-saving BWP is configured for the network device through an RRC message.
A terminal device, comprising: a transceiver, a processor, a memory;

the memory stores computer-executable instructions;

the processor executing computer-executable instructions stored in the memory, causing the processor to perform the handover method of any one of claims 1 to 14.
A network device, comprising: a transceiver, a processor, a memory;

the memory stores computer-executable instructions;

the processor executing computer-executable instructions stored in the memory, causing the processor to perform the handover method of any one of claims 15 to 28.
A computer readable storage medium having stored therein computer executable instructions for implementing the handover method of any of claims 1 to 14 or 15 to 28 when executed by a processor.
A computer program product comprising a computer program which, when executed by a processor, implements the handover method of any of claims 1 to 14 or 15 to 28.