CN110475297B

CN110475297B - BWP-based processing method, device, system, related equipment and storage medium

Info

Publication number: CN110475297B
Application number: CN201810442519.3A
Authority: CN
Inventors: 谢芳; 陈晶晶; 刘光毅
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2018-05-10
Filing date: 2018-05-10
Publication date: 2022-04-08
Anticipated expiration: 2038-05-10
Also published as: WO2019214452A1; CN110475297A

Abstract

The invention discloses a processing method, a device, a system, a related device and a storage medium based on partial Bandwidth (BWP). The method comprises the following steps: a network side sends the determined BWP information corresponding to the terminal in a target cell to the terminal in the switching process; the terminal receives BWP information sent by the network side in the switching process; an operating bandwidth at the target cell is determined.

Description

BWP-based processing method, device, system, related equipment and storage medium

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a processing method, apparatus, system, related device and storage medium based on a partial Bandwidth (BWP).

Background

A Fifth Generation mobile communication (5G) system operates on a large bandwidth of 100MHz to 400MHz, and consumes a large amount of power if a User Equipment (UE) operates on the full bandwidth. Therefore, to help the UE in the connected state save power consumption and take into account that some UEs may not have the capability of supporting the full bandwidth, the BWP concept is introduced in the 5G technology, i.e. the base station can configure the connected UE to operate only on a part of the bandwidth, such as 20 MHz.

On the other hand, in the 5G system, the handover procedure takes the handover procedure of the LTE system as a baseline (baseline), that is, the handover procedure includes processes such as measurement configuration, measurement reporting, handover request, handover confirmation, and UE initiating random access in the target cell.

However, in the 5G system, for the UE requiring cell handover, the target base station configures the UE with BWP after the UE enters the connected state in the target cell. Thus, the UE needs to wait for a period of time in the target cell to enter the BWP mode of operation, which increases latency and increases power consumption of the UE.

Disclosure of Invention

To solve the existing technical problems, embodiments of the present invention provide a BWP-based processing method, apparatus, system, related device and storage medium.

The technical scheme of the embodiment of the invention is realized as follows:

the embodiment of the invention provides a BWP-based processing method, which is applied to a terminal and comprises the following steps:

receiving BWP information sent by a network side in a switching process;

an operating bandwidth at the target cell is determined.

In the foregoing solution, when receiving BWP information sent by the network side, the method further includes:

and receiving the frequency domain position information of the measurement reference symbol sent by the network side.

In the above solution, when receiving BWP information sent by the network side, the method further includes:

and receiving a SubCarrier Spacing (SCS) of the measurement reference symbol sent by the network side.

In the above scheme, a handover command carrying relevant information of a measurement reference symbol sent by the network side is received.

In the foregoing solution, the receiving BWP information sent by the network side includes:

and receiving a switching command carrying the received BWP information sent by the network side.

In the above solution, the received BWP information is at least one of the following information configured by the target base station for the terminal:

all BWP information;

initial BWP information;

activated BWP information;

default BWP information;

other BWP information in all BWPs configured, except the initial BWP, the active BWP and the default BWP.

In the above solution, when the received BWP information at least contains active BWP and/or default BWP information, the method further includes:

receiving a Timer for activating BWP configured for the terminal by the target base station; and when the terminal does not have data transmission or is not scheduled beyond the Timer duration on the activated BWP, switching to the default BWP.

In the above scheme, a handover command carrying first indication information sent by the network side is received;

and determining all the BWP information configured for the terminal by the target base station by using the first indication information and the BWP information configured for the terminal by the source base station.

In the above scheme, a handover command carrying second indication information sent by the network side is received;

and determining the activated BWP information configured for the terminal by the target base station by using the second indication information and the activated BWP information configured for the terminal by the source base station.

In the above scheme, a handover command carrying third indication information sent by the network side is received;

and determining the default BWP information configured for the terminal by the target base station by using the third indication information and the default BWP information configured for the terminal by the source base station.

In the above solution, the received BWP information is at least two BWP information configured for the terminal by the target base station;

the determining the working bandwidth in the target cell includes:

determining the activated BWP information by one of:

taking the BWP information of a specific position in a sequence formed by the at least two pieces of BWP information as activated BWP information;

searching for fourth indication information from a sequence formed by the at least two pieces of BWP information; determining activated BWP information according to the position of the fourth indication information in the sequence;

determining activated BWP information from a sequence formed by the at least two BWP information according to the received bitmap information;

an operating bandwidth at the target cell is determined based on the determined active BWP information.

An embodiment of the present invention further provides a BWP-based processing method, which is applied to a network-side device, and the method includes:

sending the determined BWP information corresponding to the terminal in a target cell to the terminal in the switching process; the transmitted BWP information is used to determine the operating bandwidth for the terminal to determine at the target cell.

In the foregoing solution, when sending the determined BWP information to the terminal, the method further includes:

and sending the frequency domain position information of the measurement reference symbol to the terminal.

In the foregoing solution, when sending the determined BWP location information to the terminal, the method further includes:

and sending SCS of the measurement reference symbols to the terminal.

In the foregoing solution, the sending frequency domain location information of a sounding reference symbol to the terminal includes:

and sending a switching command carrying the relevant information of the measurement reference symbol to the terminal.

In the foregoing solution, the sending the determined BWP information to the terminal includes:

and sending a switching command carrying the BWP information to the terminal.

In the above solution, the sent BWP information is at least one of the following information configured by the target base station for the terminal:

all BWP information;

initial BWP information;

activated BWP information;

default BWP information;

In the above solution, when the sent BWP information at least includes active BWP and/or default BWP information, the method further includes:

sending a Timer for activating BWP configured by the terminal of the target base station to the terminal; and when the terminal does not have data transmission or is not scheduled beyond the Timer duration on the activated BWP, switching to the default BWP.

In the foregoing solution, sending a handover command carrying the determined BWP information to the terminal includes:

sending a switching command carrying first indication information to the terminal; the first indication information is used for the terminal to determine all BWP information configured for the terminal by the target base station by using the first indication information and BWP information configured for the terminal by the source base station.

In the foregoing solution, the sending the handover command carrying the determined BWP information to the terminal includes:

sending a switching command carrying second indication information to the terminal; the second indication information is used for the terminal to determine the activated BWP information configured for the terminal by the target base station by using the second indication information and the activated BWP information configured for the terminal by the source base station.

sending a switching command carrying third indication information to the terminal; the third indication information is used for the terminal to determine the default BWP information configured for the terminal by the target base station by using the third indication information and the default BWP information configured for the terminal by the source base station.

In the above solution, the determined BWP information is at least two BWP information configured for the terminal by the target base station; when the determined BWP information is transmitted to the terminal, the method further includes:

transmitting indication information of activated BWP information to the terminal; the indication information of the activated BWP information includes one of information:

fourth indication information located in a sequence formed by the at least two BWP information; the fourth indication information is used for the terminal to determine activated BWP information in the sequence;

bitmap information; the bitmap information is used for the terminal to determine activated BWP information in the sequence.

An embodiment of the present invention further provides a BWP-based processing apparatus, including:

a receiving unit, configured to receive BWP information sent by a network side in a handover process;

a first determining unit, configured to determine an operating bandwidth in a target cell.

In the foregoing solution, the receiving unit is further configured to receive frequency domain position information of a sounding reference symbol sent by a network side when receiving BWP information sent by the network side.

the first determining unit is specifically configured to determine the activated BWP information by one of the following methods:

a second determining unit, configured to determine that the terminal performs cell switching;

a sending unit, configured to send, to a terminal in a handover procedure, BWP information corresponding to a target cell of the determined terminal; the transmitted BWP information is used to determine the operating bandwidth for the terminal to determine at the target cell.

In the foregoing solution, the sending unit is further configured to send, to the terminal, frequency-domain position information of a sounding reference symbol when sending the determined BWP information to the terminal.

In the above solution, the determined BWP information is at least two BWP information configured for the terminal by the target base station; the sending unit is further configured to:

when the determined BWP information is sent to the terminal, indication information of activated BWP information is sent to the terminal; the indication information of the activated BWP information includes one of information:

An embodiment of the present invention further provides a terminal, including:

a first communication interface, configured to receive BWP information sent by a network side in a handover process;

a first processor for determining an operating bandwidth at a target cell.

In the foregoing solution, the first communication interface is further configured to receive frequency domain position information of a sounding reference symbol sent by a network side when receiving BWP information sent by the network side.

the first processor is specifically configured to determine activated BWP information by one of:

An embodiment of the present invention further provides a network device, including:

the second processor is used for determining that the terminal carries out cell switching;

the second communication interface is used for sending the determined BWP information corresponding to the terminal in the target cell to the terminal in the switching process; the transmitted BWP information is used to determine the operating bandwidth for the terminal to determine at the target cell.

In the foregoing solution, the second communication interface is further configured to send, to the terminal, frequency-domain position information of a measurement reference symbol when sending the determined BWP information to the terminal.

In the above solution, the determined BWP information is at least two BWP information configured for the terminal by the target base station; the second communication interface is further configured to:

An embodiment of the present invention further provides a BWP-based processing system, including: a terminal, a source base station and a target base station; wherein,

the target base station is configured to send, to the terminal through the source base station in a handover process, BWP information corresponding to the determined terminal in the target cell after the source base station determines that the terminal performs cell handover;

the terminal is used for receiving BWP information sent by a network side in a switching process; and determines the operating bandwidth at the target cell.

In the foregoing solution, the source base station is configured to send a handover request command carrying at least one of the following information of the terminal to the target base station: bandwidth capability information supported by the terminal; BWP information configured for the terminal itself;

the target base station is further configured to receive the handover request command sent by the source base station, and determine BWP information corresponding to the terminal in the target cell and a sending mode of the determined BWP.

In the above solution, the source base station configures at least two BWP messages for the terminal; the source base station is further configured to send indication information of activated BWP information to the target base station; the indication information of the activated BWP information includes one of information:

fifth indication information located in a sequence formed by the at least two BWP information; the fifth indication information is used for the target base station to determine activated BWP information in the sequence;

bitmap information; the bitmap information is used for the target base station to determine activated BWP information in the sequence;

or, the target base station is configured to use the BWP information at a specific position in a sequence formed by the at least two BWP information as the active BWP information.

In the above solution, the target base station is configured to send a handover request response or a handover command to the source base station, where the handover request response or the handover command carries BWP information corresponding to the terminal in the target cell;

the source base station is used for receiving the switching request response or the switching command; and transmitting the BWP information in the received request response or the switching command to the terminal, or transmitting the BWP information corresponding to the terminal in the target cell to the terminal through an air interface.

An embodiment of the present invention further provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any method on the terminal side or implements the steps of any method on the network side.

In the BWP-based processing method, apparatus, system, related device and storage medium provided in the embodiments of the present invention, in a cell handover process, a network side sends BWP information corresponding to a target cell to a terminal, and the terminal receives the BWP information sent by the network side in the handover process; the working bandwidth in the target cell is determined, and the network side sends the BWP information in the target cell to the terminal in the switching process, so that the terminal can determine the working bandwidth as soon as possible by using the received BWP information, the time for searching the working bandwidth in the target cell can be greatly reduced, the power consumption generated in the searching process is greatly reduced, the time delay and the power consumption are further optimized, and the user experience is improved.

Drawings

FIG. 1 is a flowchart illustrating a BWP-based processing method of a terminal side according to an embodiment of the present invention;

FIG. 2 is a flowchart illustrating a BWP-based processing method on the network side according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating a BWP-based processing method according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a cell handover process according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a BWP-based processing apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of an alternative BWP-based processing apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a terminal structure according to an embodiment of the present invention;

FIG. 8 is a diagram illustrating a network device according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a BWP-based processing system according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

In the 5G system, the switching process takes the switching process of the LTE system as baseline, so that for the UE in the switching process, the target base station only configures information such as a target cell, a special cell radio network temporary identifier (C-RNTI), special random access resources and the like for the UE through a switching command at present. When the UE enters the connected state in the target cell, the target base station may configure BWP for the UE, so that the UE searches for the working bandwidth in the target cell before the target base station configures BWP for the UE, the search time and the power consumption of the UE are greatly increased, and the performance is not optimized from the viewpoint of the time delay and the power consumption of the UE.

Based on this, in various embodiments of the invention: and the network side sends the BWP information corresponding to the terminal in the target cell to the terminal in the cell switching process so that the terminal can determine the working bandwidth in the target cell as soon as possible.

According to the scheme provided by the embodiment of the invention, the network side sends the BWP information of the target cell to the terminal in the switching process, so that the terminal can determine the working bandwidth as soon as possible by using the received BWP information, the time for searching the working bandwidth in the target cell can be greatly reduced, the power consumption generated in the searching process is greatly reduced, the time delay and the power consumption are further optimized, and the user experience is improved.

An embodiment of the present invention provides a BWP-based processing method, as shown in fig. 1, applied to a terminal, where the method includes:

step 101: receiving BWP information sent by a network side in a switching process;

here, the terminal receives BWP information sent by the network side during the cell handover process, specifically, the received BWP information is sent after the terminal determines that the terminal performs cell handover and determines that the terminal corresponds to the BWP information of the target cell on the terminal network side.

In an embodiment, the timing for the network side to send the BWP information may be: the source base station determines that the terminal needs to perform cell switching and sends a switching request command to a target base station; the target base station receives the handover request command and allocates BWP information corresponding to the target cell (i.e. determines BWP information corresponding to the target cell) to the terminal.

In practical applications, in addition to sending BWP information, the network side generally sends frequency domain location information of the sounding reference symbols to the terminal, and further sends SCS, so that the terminal can obtain the sounding reference symbols according to the relevant information, and thereby determine the signal quality of the operating bandwidth (which may be understood as active BWP, or may be understood as operating BWP) in the target cell by using the sounding reference symbols. In addition, in practical applications, the measurement reference symbols may also be used to synchronize with the target cell, or synchronize with an active BWP in the target cell.

Based on this, in an embodiment, the method may further include:

Further, receiving the SCS of the measurement reference symbol sent by the network side.

In an embodiment, the receiving BWP information sent by the network side includes:

Correspondingly, the handover command may also carry information related to the sounding reference symbol (frequency domain location information and SCS), so that the terminal can obtain the information in time.

In practical application, the measurement reference symbol may be: a Synchronization Signal Block (SSB) that does not carry Remaining Minimum System Information (RMSI) (also referred to as SIB1) location Information, or an SSB that carries RMSI location Information (also referred to as a cell defining SSB), or a reference Synchronization Signal Block (reference SSB), or a Channel State Information reference symbol (CSI-RS, Channel State Information-reference Signal), and the like.

In an embodiment, the received BWP information is at least one of the following information configured by the target base station for the terminal:

all BWP information;

initial BWP information;

activated BWP information;

default BWP information;

Wherein, all BWP information means: all the BWP information configured for the terminal by the target base station includes: initial BWP information, active BWP information, default BWP information, and other BWP information.

The initial BWP is the BWP used by the terminal when initially accessing the target cell, that is, the bandwidth corresponding to the terminal when initially accessing the target cell is determined by using the initial BWP.

The activated BWP is used for the terminal to transmit uplink and/or downlink data, that is, the terminal transmits uplink and/or downlink data on the working bandwidth corresponding to the activated BWP.

When the BWP information at least includes active BWP and/or default BWP information, the target base station further configures a Timer for activating BWP for the terminal; and when the terminal does not have data transmission or is not scheduled on the activated BWP beyond the time duration of the Timer, the terminal is switched to the default BWP.

That is, when there is no service data or no scheduling information transmission on the activated BWP exceeding the Timer duration, the terminal switches to the default BWP.

Based on this, in an embodiment, the method may further include:

and receiving the Timer for activating the BWP configured for the terminal by the target base station.

For default BWP information, there may be only Downlink (DL) and no Uplink (UL).

In practice, in order to save transmission resources, BWP information may be indicated in various ways. In particular, the amount of the solvent to be used,

for all the BWP information, the terminal may receive a handover command carrying first indication information, such as 1bit, sent by the network side;

and the terminal determines all the BWP information configured for the terminal by the target base station by utilizing the first indication information and the BWP information configured for the terminal by the source base station.

For the activated BWP information, the terminal may receive a handover command carrying second indication information, such as 1bit, sent by the network side;

and the terminal determines the activated BWP information configured for the terminal by the target base station by using the second indication information and the activated BWP information configured for the terminal by the source base station.

For the default BWP information, the terminal may receive a handover command carrying third indication information, such as 1bit, sent by the network side;

In practical applications, the BWP information may be at least one of the following information:

frequency domain location and bandwidth information;

SCS；

information of upstream/downstream BWP.

Wherein, for the frequency domain position information, for example: a central frequency point, a highest or lowest suitable starting point position frequency point; the ARFCN, GSCN, the number of PRBs from a certain reference point location (e.g., point A), etc. can be used. For the bandwidth information, the bandwidth may be directly used, or the number of Physical Resource Blocks (PRBs), the number of Resource Elements (REs), the number of SCS, and the like may be used.

For frequency domain location and bandwidth information, the frequency domain and location information indicated by a number (e.g., indicating which table the BWP is) may also be used.

For SCS, if the uplink SCS and the downlink SCS are different, respectively indicating;

the information for the upstream/downstream BWP may include: BWP ID, configuration information of uplink and downlink channels, resource information of uplink random access, etc.

Step 102: an operating bandwidth at the target cell is determined.

Of course, the terminal determines its own operating bandwidth in the target cell by using the received BWP information.

Here, in practical application, if the target base station configures at least two BWPs for the terminal, which BWP is currently active BWP may be indicated in an implicit or explicit manner, and then for the terminal, the received BWP information is the at least two BWP information configured for the terminal by the target base station, and the active BWP information may be determined in one of the following manners:

the terminal takes the BWP information at a specific position in a sequence formed by the at least two pieces of BWP information as activated BWP information;

the terminal searches for fourth indication information, such as 1bit, from a sequence formed by the at least two pieces of BWP information, and adds the indication information before or after the activated BWP information; determining activated BWP information according to the position of the fourth indication information in the sequence;

the terminal determines activated BWP information, such as 0100, indicating configured 4 BWPs from a sequence formed by the at least two BWP information according to the received bitmap information, where the second is the current activated BWP;

the terminal determines an operating bandwidth in the target cell based on the determined active BWP information.

Correspondingly, an embodiment of the present invention further provides a BWP-based processing method, which is applied to a network-side device, and as shown in fig. 2, the method includes:

step 201: determining that a terminal performs cell switching;

step 202: and sending the determined BWP information corresponding to the terminal in the target cell to the terminal in the switching process.

Here, as previously described, the transmitted BWP information is used to determine the operating bandwidth for the terminal to determine at the target cell.

In practical applications, besides sending BWP information, the network side generally sends frequency domain location information of the sounding reference symbols to the terminal, and further sends SCS, so that the terminal can obtain the sounding reference symbols according to the relevant information, and thereby determine the signal quality of the operating bandwidth (which may be understood as active BWP, or may be understood as operating BWP) in the target cell by using the sounding reference symbols. In addition, in practical applications, the measurement reference symbols may also be used to synchronize with the target cell, or synchronize with an active BWP in the target cell.

Based on this, in an embodiment, the method may further include:

Further, the method may further include:

and sending SCS of the measurement reference symbols to the terminal.

In an embodiment, the sending the determined BWP information to the terminal includes:

and sending a switching command carrying the BWP information to the terminal.

In an embodiment, the sent BWP information is at least one of the following information configured by the target base station for the terminal:

all BWP information;

initial BWP information;

activated BWP information;

default BWP information;

In actual application, when the received BWP information at least includes active BWP and/or default BWP information, the target base station further configures a Timer for activating BWP for the terminal; and when the terminal does not have data transmission or is not scheduled on the activated BWP beyond the time duration of the Timer, the terminal is switched to the default BWP.

Based on this, in an embodiment, the method may further include:

and sending the Timer for activating the BWP configured by the terminal of the target base station to the terminal.

for all the BWP information, the network side device sends a handover command carrying first indication information, such as 1bit, to the terminal; the first indication information is used for the terminal to determine all BWP information configured for the terminal by the target base station by using the first indication information and BWP information configured for the terminal by the source base station.

For the activated BWP information, the network side device sends a handover command carrying second indication information, such as 1bit, to the terminal; the second indication information is used for the terminal to determine the activated BWP information configured for the terminal by the target base station by using the second indication information and the activated BWP information configured for the terminal by the source base station.

For the default BWP information, the network side device sends a handover command carrying third indication information, such as 1bit, to the terminal; the third indication information is used for the terminal to determine the default BWP information configured for the terminal by the target base station by using the third indication information and the default BWP information configured for the terminal by the source base station.

In practical application, if the target base station configures at least two BWPs for the terminal, it may indicate, in an implicit or explicit manner, which BWP is the currently active BWP, which specifically includes:

when the determined BWP information is transmitted to the terminal, the method further includes:

fourth indication information, such as 1bit, located in a sequence formed by the at least two BWP information, the fourth indication information being added before or after the activated BWP information; the fourth indication information is used for the terminal to determine activated BWP information in the sequence;

bitmap information; the bitmap information is used for the terminal to determine activated BWP information in the sequence, such as 0100, which indicates 4 configured BWPs, and the second is the current activated BWP.

In addition, the activated BWP information may be disposed at a specific position, such as the foremost or rearmost, in the sequence formed by the at least two BWP information.

Correspondingly, an embodiment of the present invention further provides a BWP-based processing method, as shown in fig. 3, where the method includes:

step 301: after a source base station determines that a terminal performs cell switching, a target base station sends BWP information corresponding to the determined terminal in a target cell to the terminal through the source base station in the switching process;

here, in an embodiment, after the source base station determines that the terminal needs to perform cell handover, the source base station sends a handover request command carrying at least one of the following information of the terminal to the target base station:

bandwidth capability information supported by the terminal; BWP information configured for the terminal itself;

after receiving the handover request command, the target base station determines, based on the information carried in the handover request command, how to send the BWP information, that is, how to send the BWP information, where the terminal sends the BWP information.

Wherein, the bandwidth capability supported by the terminal means: which bandwidths are supported by the terminal, e.g., 100MHz, 200MHz, etc.

Of course, the handover request command may also carry existing information, such as: capability information of the terminal, measurement configuration information of the terminal, radio resource configuration information, and the like.

In practical application, if the source base station configures multiple BWPs for the terminal, it may indicate, in an implicit or explicit manner, which BWP is the currently active BWP:

the source base station may further transmit indication information of activated BWP information to the target base station; the indication information of the activated BWP information includes one of information:

fifth indication information, such as 1bit, etc., located in the sequence formed by the at least two BWP information, the indication information is added before or after the activated BWP information; the fifth indication information is used for the target base station to determine activated BWP information in the sequence;

bitmap information; the bitmap information is used for the target base station to determine activated BWP information in the sequence, such as 0100, which indicates 4 configured BWPs, and the second is the current activated BWP.

In addition, the source base station may set the activated BWP information at a specific position, such as the foremost or rearmost position, in the sequence formed by the at least two BWP information.

Accordingly, the target base station takes the BWP information of a specific location in the sequence formed by the at least two BWP information as the activated BWP information.

After the target base station completes the configuration of the BWP for the terminal, the target base station sends a request response carrying the BWP information corresponding to the terminal in the target cell to the source base station;

after receiving the handover request response, the source base station may directly transmit the BWP information in the received handover request response to the terminal, or send the BWP information corresponding to the terminal in the target cell to the terminal over an air interface.

Here, sending the BWP information corresponding to the terminal in the target cell to the terminal over an air interface means: the source base station may send BWP information to the terminal over the air along with other information such as C-RNTI used by the terminal in the target cell, random access resources, system messages, etc.

When the target base station sends the handover command, for the BWP information, in addition to the foregoing manner, if the BWP configured by the target base station for the terminal partially coincides with the BWP configured by the source base station (which may be referred to as BWP in the source cell), the target base station may indicate by using a bitmap manner, and if 1001, it indicates that the first and last BWPs in the source cell are continuously configured in the target cell;

in addition, in practical application, when the target base station configures BWP for the terminal, the target base station also configures the frequency domain position of the srs, and as mentioned above, the frequency domain position information of the srs is also carried in the handover command.

Step 302: the terminal receives the BWP information sent by the network side and determines the working bandwidth of the target cell.

In a 5G system, the base station is called a gNB.

It should be noted that: the related processing of the target base station, the source base station and the terminal can be understood by referring to the foregoing description, and will not be described herein.

After the solution of the embodiment of the present invention is adopted, a complete cell switching process, as shown in fig. 4, may include:

step 400: a source gNB (Source gNB) performs Measurement configuration (Measurement configuration.) on the UE;

step 401: the UE sends a Measurement Report (Measurement Report) to the Source gNB;

step 402: after receiving the measurement report, the Source gNB makes a handover Decision (HO Decision) according to the measurement report;

step 403: the Source gNB sends a handover Request command (HO Request) to a target gNB (target gNB);

here, the command carries BWP information corresponding to the UE in the source cell.

Step 404: after receiving the command, the Target gNB performs acceptance control (acceptance control);

in this step, Target gNB configures BWP for UE.

Step 405: the Target gNB returns a handover Request acceptance (HO Request ACK) message to the Source gNB;

here, the returned message carries BWP information corresponding to the UE in the target cell.

Step 406: the Source gNB sends a handover Command (HO Command) to the UE;

here, the HO Command carries BWP information corresponding to the UE in the target cell.

Step 407: after receiving the command, the UE synchronizes with the Target gNB and performs a random access process (Synchronization and random access);

step 408: the Target gNB sends uplink resource allocation (UL) and Time Advance (TA) to the UE;

step 409: the UE sends an RRC reconfiguration complete (RRC conn.

By adopting the method of the embodiment of the invention, in the cell switching process, the network side sends the BWP information corresponding to the terminal in the target cell to the terminal, and the terminal receives the BWP information sent by the network side in the switching process; the working bandwidth in the target cell is determined, and the network side sends the BWP information in the target cell to the terminal in the switching process, so that the terminal can determine the working bandwidth as soon as possible by using the received BWP information, the time for searching the working bandwidth in the target cell can be greatly reduced, the power consumption generated in the searching process is greatly reduced, the time delay and the power consumption are further optimized, and the user experience is improved.

To implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a BWP processing apparatus, which is disposed on a terminal, and as shown in fig. 5, the apparatus includes:

a receiving unit 51, configured to receive BWP information sent by the network side in the handover process;

a first determining unit 52, configured to determine an operating bandwidth at the target cell.

Based on this, in an embodiment, the receiving unit 51 is further configured to receive frequency domain position information of the sounding reference symbol sent by the network side.

Further, the receiving unit 51 is further configured to receive an SCS of the sounding reference symbol sent by the network side.

In an embodiment, the receiving unit 51 is specifically configured to:

all BWP information;

initial BWP information;

activated BWP information;

default BWP information;

Based on this, in an embodiment, the receiving unit 51 is further configured to receive a Timer for activating BWP configured for the terminal by the target base station.

for all the BWP information, the receiving unit 51 may receive a handover command carrying first indication information sent by the network side, such as 1 bit;

the first determining unit 52 determines all BWP information configured for the terminal by the target base station, using the first indication information and the BWP information configured for the terminal by the source base station.

For the activated BWP information, the receiving unit 51 may receive a handover command carrying second indication information sent by the network side, such as 1 bit;

the first determining unit 52 determines the activated BWP information configured for the terminal by the target base station, using the second indication information and the activated BWP information configured for the terminal by the source base station.

For the above default BWP information, the receiving unit 51 may receive a handover command carrying third indication information sent by the network side, such as 1 bit;

the first determining unit 52 determines the default BWP information configured for the terminal by the target base station by using the third indication information and the default BWP information configured for the terminal by the source base station.

In an embodiment, the received BWP information is at least two BWP information configured for the terminal by the target base station;

the first determining unit 52 is specifically configured to determine the activated BWP information by one of the following methods:

In practical applications, the receiving unit 51 may be implemented by a communication interface in a BWP-based device; the first determination unit 52 may be implemented by a processor in a BWP-based processing device.

To implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a BWP-based processing apparatus, disposed on a network-side device, as shown in fig. 6, where the apparatus includes:

a second determining unit 61, configured to determine that the terminal performs cell switching;

a sending unit 62, configured to send, to a terminal in a handover procedure, the determined BWP information corresponding to the terminal in the target cell; the transmitted BWP information is used to determine the operating bandwidth for the terminal to determine at the target cell.

In practical applications, besides sending BWP information, the network side generally sends frequency domain location information of the sounding reference symbol to the terminal, and further sends SCS to enable the terminal to obtain the sounding reference symbol, so as to determine the signal quality of the operating bandwidth (which may be understood as active BWP, or operating BWP) in the target cell by using the sounding reference symbol. In addition, in practical applications, the measurement reference symbols may also be used to synchronize with the target cell, or synchronize with an active BWP in the target cell.

Based on this, in an embodiment, the sending unit 62 is further configured to send frequency domain position information of the sounding reference symbol to the terminal when sending the determined BWP information to the terminal.

Further, the sending unit 62 is further configured to send the SCS for measuring reference symbols to the terminal.

In an embodiment, the sending unit 62 is specifically configured to:

and sending a switching command carrying the BWP information to the terminal.

all BWP information;

initial BWP information;

activated BWP information;

default BWP information;

Based on this, in an embodiment, the sending unit 62 is further configured to send, to the terminal, a Timer configured by the target base station for activating BWP configured by the terminal.

for all the BWP information, the sending unit 62 sends a switching command carrying first indication information, such as 1bit, to the terminal; the first indication information is used for the terminal to determine all BWP information configured for the terminal by the target base station by using the first indication information and BWP information configured for the terminal by the source base station.

For the activated BWP information, the sending unit 62 sends a switching command carrying second indication information, such as 1bit, to the terminal; the second indication information is used for the terminal to determine the activated BWP information configured for the terminal by the target base station by using the second indication information and the activated BWP information configured for the terminal by the source base station.

For the default BWP information, the sending unit 62 sends a switching command carrying third indication information, such as 1bit, to the terminal; the third indication information is used for the terminal to determine the default BWP information configured for the terminal by the target base station by using the third indication information and the default BWP information configured for the terminal by the source base station.

In an embodiment, the determined BWP information is at least two BWP information configured for the terminal by the target base station; the sending unit 62 is further configured to:

In practical applications, the second determining unit 61 may be implemented by a processor in a BWP-based processing device, and the sending unit 62 may be implemented by a communication interface in the BWP-based processing device.

It should be noted that: the BWP-based processing apparatus provided in the above embodiments is only exemplified by the above division of the program modules when performing BWP-based processing, and in practical applications, the above processing allocation may be completed by different program modules according to needs, that is, the internal structure of the apparatus is divided into different program modules to complete all or part of the above-described processing. In addition, the BWP-based processing apparatus provided in the foregoing embodiments and the BWP-based processing method embodiments belong to the same concept, and details of the implementation process thereof are shown in the method embodiments and will not be described herein again.

Based on the above hardware implementation of each program module, to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a terminal, as shown in fig. 7, where the terminal 70 includes:

a first communication interface 71, which can perform information interaction with a network device;

and the first processor 72 is connected with the first communication interface 71 to implement information interaction with a network device, and is used for executing the method provided by one or more technical solutions when running a computer program. And the computer program is stored on the first memory 73.

Specifically, the first communication interface 71 is configured to receive BWP information sent by the network side in the handover process;

the first processor 72 is configured to determine an operating bandwidth at the target cell.

In an embodiment, the first communication interface 71 is further configured to receive frequency domain location information of a sounding reference symbol sent by the network side.

In an embodiment, the first communication interface 71 is further configured to receive an SCS of the sounding reference symbol sent by the network side.

In an embodiment, the first communication interface 71 is specifically configured to:

all BWP information;

initial BWP information;

activated BWP information;

default BWP information;

Based on this, in an embodiment, the first communication interface 71 is further configured to receive a Timer for activating BWP configured for the terminal by the target base station.

for all the BWP information, the first communication interface 71 may receive a handover command carrying first indication information, such as 1bit, sent by the network side;

the first processor 72 determines all BWP information configured for the terminal by the target base station using the first indication information and the BWP information configured for the terminal by the source base station.

For the activated BWP information, the first communication interface 71 may receive a handover command carrying second indication information, such as 1bit, sent by the network side;

the first processor 72 determines the active BWP information configured for the terminal by the target base station using the second indication information and the active BWP information configured for the terminal by the source base station.

For the default BWP information, the first communication interface 71 may receive a handover command carrying third indication information, such as 1bit, sent by the network side;

the first processor 72 determines the default BWP information configured for the terminal by the target base station using the third indication information and the default BWP information configured for the terminal by the source base station.

the first processor 72 is specifically configured to determine the activated BWP information by one of the following methods:

Of course, in practical applications, the terminal 70 may further include: a user interface 74. The various components in the terminal 70 are coupled together by a bus system 75. It will be appreciated that the bus system 75 is used to enable communications among the components. The bus system 75 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 75 in fig. 7.

The user interface 74 may include a display, keyboard, mouse, trackball, click wheel, keys, buttons, touch pad or touch screen, etc.

The first memory 73 in the embodiment of the present invention is used to store various types of data to support the operation of the terminal 70.

The method disclosed in the above embodiments of the present invention may be applied to the first processor 72, or implemented by the first processor 72. The first processor 72 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the first processor 72. The first Processor 72 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The first processor 72 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the first memory 73, and the first processor 72 reads the information in the first memory 73 and, in conjunction with its hardware, performs the steps of the method described above.

In an exemplary embodiment, the terminal 70 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field-Programmable Gate arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

To implement the method according to the embodiment of the present invention, and based on the hardware implementation of the program module, the embodiment of the present invention further provides a network device, as shown in fig. 8, where the device 80 includes:

a second communication interface 81 capable of performing information interaction with a terminal;

and the second processor 82 is connected with the second communication interface 81 to implement information interaction with a terminal, and is used for executing the method provided by one or more of the above technical solutions when running a computer program. And the computer program is stored on the second memory 83.

Specifically, the second processor 82 is configured to determine that the terminal performs cell handover;

the second communication interface 81 is configured to send, to a terminal in a handover process, BWP information corresponding to the determined terminal in a target cell; the transmitted BWP information is used to determine the operating bandwidth for the terminal to determine at the target cell.

In an embodiment, the second communication interface 81 is further configured to send, to the terminal, frequency-domain position information of a sounding reference symbol when sending the determined BWP information to the terminal.

In an embodiment, the second communication interface 81 is further configured to send an SCS for measuring reference symbols to the terminal.

In an embodiment, the second communication interface 81 is specifically configured to:

and sending a switching command carrying the BWP information to the terminal.

all BWP information;

initial BWP information;

activated BWP information;

default BWP information;

In an embodiment, the second communication interface 81 is further configured to send, to the terminal, a Timer for activating BWP configured by the target base station and configured by the terminal.

for all the BWP information, the second communication interface 81 sends a switching command carrying first indication information, such as 1bit, to the terminal; the first indication information is used for the terminal to determine all BWP information configured for the terminal by the target base station by using the first indication information and BWP information configured for the terminal by the source base station.

For the activated BWP information, the second communication interface 81 sends a switching command carrying second indication information, such as 1bit, to the terminal; the second indication information is used for the terminal to determine the activated BWP information configured for the terminal by the target base station by using the second indication information and the activated BWP information configured for the terminal by the source base station.

For the default BWP information, the second communication interface 81 sends a switching command carrying third indication information, such as 1bit, to the terminal; the third indication information is used for the terminal to determine the default BWP information configured for the terminal by the target base station by using the third indication information and the default BWP information configured for the terminal by the source base station.

In an embodiment, the determined BWP information is at least two BWP information configured for the terminal by the target base station; the second communication interface 81 is further configured to:

In addition, the second processor 82 may further set the activated BWP information at a specific position, such as the foremost or rearmost position, in the sequence formed by the at least two BWP information.

Of course, in actual practice, the various components in network device 80 are coupled together by bus system 84, as shown in FIG. 8. It will be appreciated that the bus system 84 is used to enable communications among the components. The bus system 84 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 84 in fig. 8.

The second memory 83 in the embodiment of the present invention is used to store various types of data to support the operation of the network device 80.

The method disclosed in the above embodiments of the present invention may be applied to the second processor 82, or implemented by the second processor 82. The second processor 82 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the second processor 82. The second processor 82 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 82 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 83, and the second processor 82 reads the information in the second memory 83, and in combination with its hardware, performs the steps of the foregoing method.

In an exemplary embodiment, the network device 80 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

It is understood that the memories (such as the first memory 73 and the second memory 83) in the embodiments of the present invention may be volatile memories or nonvolatile memories, and may include both volatile and nonvolatile memories. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The described memory for embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

To implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a BWP-based processing system, as shown in fig. 9, where the system includes: a terminal 91, a source base station 92 and a target base station 93; wherein,

the target base station 93 is configured to send, to the terminal 91 through the source base station 92 in a handover process, BWP information corresponding to the determined target cell of the terminal 91 after the source base station 92 determines that the terminal performs cell handover;

the terminal 91 is configured to receive BWP information sent by a network side in a handover process; and determines the operating bandwidth at the target cell.

In an embodiment, the source base station 92 is configured to send a handover request command carrying at least one of the following information of the terminal to the target base station 93: bandwidth capability information supported by the terminal; BWP information configured for the terminal itself;

the target base station 93 is further configured to receive the handover request command sent by the source base station, and determine, based on information carried in the handover request command, BWP information corresponding to the terminal in the target cell and a determined sending manner of the BWP, that is, how to send the BWP information, that is, send the BWP information in the above manner.

The source base station 92 configures at least two BWP messages for the terminal; the source base station 92 is further configured to send indication information of activated BWP information to the target base station 93; the indication information of the activated BWP information includes one of information:

fifth indication information located in a sequence formed by the at least two BWP information; the fifth indication information is used for the target base station 93 to determine activated BWP information in the sequence;

bitmap information; the bitmap information is used for the target base station 93 to determine activated BWP information in the sequence;

or, the target base station 93 is configured to use the BWP information at a specific position in a sequence formed by the at least two BWP information as the activated BWP information.

In an embodiment, the target base station 93 is configured to send, to the source base station 92, a handover request response or a handover command carrying BWP information corresponding to the terminal 91 in the target cell;

the source base station 92 is configured to receive the handover request response or the handover command; and transmitting the BWP information in the received request response or handover command to the terminal 91, or transmitting the BWP information corresponding to the target cell of the terminal 91 to the terminal 91 through an air interface.

It should be noted that: the specific processing of the terminal 91, the source base station 92 and the target base station 93 can be understood with reference to the method.

In an exemplary embodiment, the embodiment of the present invention further provides a storage medium, which may specifically be a computer readable storage medium, such as the first memory 73 including a computer program, which is executable by the first processor 72 of the terminal 70 to complete the steps of the foregoing terminal method, or the second memory 83 including a computer program, which is executable by the second processor 82 of the network device 80 to complete the steps of the foregoing network device side method.

The computer readable storage medium can be FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

It should be noted that: the technical schemes described in the embodiments of the present invention can be combined arbitrarily without conflict.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A partial bandwidth BWP based processing method, applied to a terminal, the method comprising:

receiving BWP information sent by a network side in a switching process;

determining the working bandwidth in the target cell; wherein,

when the BWP information sent by the network side is received, the method further includes:

receiving frequency domain position information of a measurement reference symbol sent by the network side;

and receiving the subcarrier interval of the measurement reference symbol sent by the network side.

2. The method according to claim 1, wherein a handover command carrying information related to a sounding reference symbol sent by the network side is received.

3. The method according to claim 1, wherein the receiving BWP information sent by the network side comprises:

4. Method according to any of claims 1 to 3, wherein the received BWP information is at least one of the following information configured for the terminal by the target base station:

all BWP information;

initial BWP information;

activated BWP information;

default BWP information;

5. The method according to claim 4, wherein when the received BWP information contains at least active BWP and/or default BWP information, the method further comprises:

receiving a Timer for activating BWP configured for the terminal by the target base station; and when the terminal does not have data transmission or is not scheduled on the activated BWP beyond the time duration of the Timer, switching to the default BWP.

6. The method according to claim 4, characterized by receiving a handover command carrying first indication information sent by the network side;

7. The method according to claim 4, wherein a handover command carrying second indication information sent by the network side is received;

8. The method according to claim 4, wherein a handover command carrying third indication information sent by the network side is received;

9. The method according to claim 1, wherein the received BWP information is at least two BWP information configured for the terminal by the target base station;

the determining the working bandwidth in the target cell includes:

determining the activated BWP information by one of:

10. A BWP-based processing method, applied to a network-side device, the method comprising:

sending the determined BWP information corresponding to the terminal in a target cell to the terminal in the switching process; the transmitted BWP information is used for determining the working bandwidth for the terminal to determine in the target cell; wherein,

sending frequency domain position information of the measurement reference symbol to the terminal;

and sending the subcarrier spacing of the measurement reference symbols to the terminal.

11. The method of claim 10, wherein the sending frequency domain location information of sounding reference symbols to the terminal comprises:

12. The method according to claim 10, wherein said sending the determined BWP information to the terminal comprises:

and sending a switching command carrying the BWP information to the terminal.

13. Method according to any of claims 10 to 12, wherein the transmitted BWP information is at least one of the following information configured by the target base station for the terminal:

all BWP information;

initial BWP information;

activated BWP information;

default BWP information;

14. The method according to claim 13, wherein when the transmitted BWP information at least contains active BWP and/or default BWP information, the method further comprises:

15. The method according to claim 13, wherein sending a handover command carrying the determined BWP information to the terminal comprises:

16. The method according to claim 13, wherein said sending a handover command carrying the determined BWP information to the terminal comprises:

17. The method according to claim 13, wherein said sending a handover command carrying the determined BWP information to the terminal comprises:

18. The method according to claim 10, wherein the determined BWP information is at least two BWP information configured for the terminal by the target base station; when the determined BWP information is transmitted to the terminal, the method further includes:

19. A BWP based processing apparatus, wherein said apparatus comprises:

a first determining unit, configured to determine an operating bandwidth in a target cell; wherein,

the receiving unit is further configured to receive frequency domain position information of a sounding reference symbol sent by a network side when receiving BWP information sent by the network side; and receiving the subcarrier interval of the measurement reference symbol sent by the network side.

20. The apparatus of claim 19, wherein the received BWP information is at least two BWP information configured for the terminal by the target base station;

21. A BWP based processing apparatus, wherein said apparatus comprises:

a sending unit, configured to send, to a terminal in a handover procedure, BWP information corresponding to a target cell of the determined terminal; the transmitted BWP information is used for determining the working bandwidth for the terminal to determine in the target cell; wherein,

the sending unit is further configured to send frequency domain position information of the measurement reference symbol to the terminal when sending the determined BWP information to the terminal; and transmitting the subcarrier spacing of the measurement reference symbol to the terminal.

22. The apparatus of claim 21, wherein the determined BWP information is at least two BWP information configured for the terminal by a target base station; the sending unit is further configured to:

23. A terminal, characterized in that the terminal comprises:

a first processor for determining an operating bandwidth at a target cell; wherein,

the first communication interface is further configured to receive frequency domain position information of a sounding reference symbol sent by a network side when receiving BWP information sent by the network side; and receiving the subcarrier interval of the measurement reference symbol sent by the network side.

24. The terminal of claim 23, wherein the received BWP information is at least two BWP information configured for the terminal by the target base station;

25. A network device, the device comprising:

the second communication interface is used for sending the determined BWP information corresponding to the terminal in the target cell to the terminal in the switching process; the transmitted BWP information is used for determining the working bandwidth for the terminal to determine in the target cell; wherein,

the second communication interface is further configured to send frequency domain position information of a measurement reference symbol to the terminal when sending the determined BWP information to the terminal; and transmitting the subcarrier spacing of the measurement reference symbol to the terminal.

26. The apparatus of claim 25, wherein the determined BWP information is at least two BWP information configured for the terminal by a target base station; the second communication interface is further configured to:

27. A BWP based processing system, said system comprising: a terminal, a source base station and a target base station; wherein,

the target base station is configured to send, to the terminal through the source base station in a handover process, BWP information corresponding to the determined terminal in the target cell after the source base station determines that the terminal performs cell handover; when sending the determined BWP information to the terminal, sending frequency domain position information of a measurement reference symbol to the terminal, and sending a subcarrier interval of the measurement reference symbol to the terminal;

the terminal is used for receiving BWP information sent by a network side in a switching process; determining the working bandwidth in the target cell; when receiving BWP information sent by a network side, receiving frequency domain position information of a measurement reference symbol sent by the network side, and receiving a subcarrier interval of the measurement reference symbol sent by the network side.

28. The system according to claim 27, wherein said source base station is configured to send a handover request command carrying at least one of the following information of the terminal to said target base station: bandwidth capability information supported by the terminal; BWP information configured for the terminal itself;

29. The system according to claim 28, wherein said source base station configures said terminal with at least two BWP messages; the source base station is further configured to send indication information of activated BWP information to the target base station; the indication information of the activated BWP information includes one of information:

30. The system according to claim 27, wherein the target base station is configured to send a handover request response or a handover command to the source base station, where the handover request response or the handover command carries BWP information corresponding to the terminal in the target cell;

31. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 9, or for performing the steps of the method of any one of claims 10 to 18, when the computer program is executed by a processor.