CN115103414A

CN115103414A - BWP switching method, device, equipment and storage medium

Info

Publication number: CN115103414A
Application number: CN202210695656.4A
Authority: CN
Inventors: 富饶
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-09-23

Abstract

The embodiment of the application provides a BWP switching method, a device, equipment and a storage medium, wherein terminal equipment receives indication information, and the indication information is used for indicating switching to a target BWP; acquiring a subcarrier interval of the current BWP; and determining target BWP radio frequency configuration information according to the indication information, and switching to the target BWP according to the subcarrier interval and the target BWP radio frequency configuration information. When BWP switching is carried out, switching can be directly carried out according to target BWP radio frequency configuration information, switching time is saved, and the low-delay requirement of a protocol can be met to the greatest extent.

Description

BWP switching method, device, equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a BWP switching method, apparatus, device, and storage medium.

Background

In a 5G New Radio (NR) system, a network device may configure 1 or more bandwidth parts (BWPs) for a terminal device. At the same time, the terminal device can only have one active BWP, and the terminal device can only receive or transmit data on the active BWP. When the terminal device needs to transmit more data, the network device may instruct the terminal device to switch to the BWP with wider bandwidth; when the terminal device needs to transmit less data, the network device may instruct the terminal device to switch to BWP with narrower bandwidth.

The delay constraint of BWP handover indicated by Downlink Control Information (DCI) is described in the 3rd generation partnership project (3 GPP) protocol 38.133: for terminal devices supporting 15kHz subcarrier spacing or 30kHz subcarrier spacing, the latency requirement for BWP handover is 1 ms. However, the protocol does not describe how to perform BWP handover to meet low latency requirements.

Disclosure of Invention

The embodiment of the application provides a BWP switching method, a BWP switching device, BWP switching equipment and a BWP switching storage medium, and meets the low-delay requirement specified in a protocol.

In a first aspect, an embodiment of the present application provides a BWP handover method, including:

receiving indication information for indicating a handover to a target BWP;

acquiring a subcarrier interval of the current BWP;

determining target BWP radio frequency configuration information according to the indication information;

and switching to the target BWP according to the subcarrier interval and the target BWP radio frequency configuration information.

In one possible implementation, the subcarrier spacing comprises a first subcarrier spacing or a second subcarrier spacing.

In one possible embodiment, the subcarrier spacing is the first subcarrier spacing; switching to a target BWP according to the subcarrier interval and the target BWP radio frequency configuration information; the method comprises the following steps:

if the current time slot is determined to have a task which is being executed, stopping configuring the task and stopping radio frequency in the first time slot;

at the first moment, switching to the target BWP according to the target BWP radio frequency configuration information; the first time slot is the next time slot of the current time slot; the first time is an intersection point of the first time slot and a second time slot, and the second time slot is a next time slot of the first time slot.

if the current time slot is determined not to have a task being executed, stopping configuring the task and stopping radio frequency in the current time slot;

at the second moment, switching to the target BWP according to the target BWP radio frequency configuration information; the second time is the intersection point of the current time slot and the first time slot.

In one possible embodiment, the subcarrier spacing is the second subcarrier spacing; switching to a target BWP according to the subcarrier interval and the target BWP radio frequency configuration information; the method comprises the following steps:

stopping the configuration task at the current time slot;

stopping the radio frequency in the first time slot;

at the first moment, switching to the target BWP according to the target BWP radio frequency configuration information; the first time is an intersection point of the first time slot and a second time slot, the first time slot is a next time slot of the current time slot, and the second time slot is a next time slot of the first time slot.

In one possible embodiment, the method further comprises:

determining target BWP link configuration information according to the indication information;

determining task information of the target BWP according to the target BWP link configuration information;

executing a task on the target BWP according to the task information.

In one possible embodiment, the target BWP link configuration information includes target BWP uplink configuration information or target BWP downlink configuration information.

In one possible embodiment, the method further comprises:

acquiring BWP configuration information;

preprocessing the BWP configuration information to obtain BWP radio frequency configuration information, BWP uplink configuration information and BWP downlink configuration information;

and resetting the BWP radio frequency configuration information, the BWP uplink configuration information and the BWP downlink configuration information according to the indication information.

In a second aspect, an embodiment of the present application provides a BWP switching device, including: a receiving module, an obtaining module, a determining module and a switching module, wherein,

the receiving module is configured to receive indication information, where the indication information is used to indicate a handover to a target BWP;

the obtaining module is configured to obtain a subcarrier interval of a current BWP;

the determining module is used for determining target BWP radio frequency configuration information according to the indication information;

the switching module is configured to switch to a target BWP according to the subcarrier spacing and the target BWP radio frequency configuration information.

In a third aspect, an embodiment of the present application provides an electronic device, including a processor, a memory;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory, causing the processor to perform the BWP switching method according to any one of the first aspects.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the BWP switching method according to any one of the first aspects.

In a fifth aspect, an embodiment of the present application provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the BWP switching method according to any one of the first aspect may be implemented.

The embodiment of the application provides a BWP switching method, a device, equipment and a storage medium, wherein terminal equipment receives indication information, and the indication information is used for indicating switching to a target BWP; acquiring a subcarrier interval of the current BWP; and determining target BWP radio frequency configuration information according to the indication information, and switching to the target BWP according to the subcarrier interval and the target BWP radio frequency configuration information. When switching BWP, switching can be directly carried out according to the target BWP radio frequency configuration information, thereby saving the switching time and meeting the low time delay requirement of the protocol to the maximum extent.

Drawings

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of different BWPs within the system bandwidth according to an embodiment of the present application;

fig. 3 is a first flowchart illustrating a BWP handover method according to an embodiment of the present application;

fig. 4A is a first schematic time slot diagram of BWP handover according to an embodiment of the present application;

fig. 4B is a schematic time slot diagram of BWP handover according to an embodiment of the present application;

fig. 5 is a flowchart illustrating a BWP switching method according to a second embodiment of the present application;

fig. 6 is a schematic structural diagram of BWP configuration information according to an embodiment of the present application;

fig. 7 is a third flowchart illustrating a BWP handover method according to an embodiment of the present application;

fig. 8 is a fourth flowchart illustrating a BWP handover method according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a BWP switching device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application, and it is obvious that the described embodiments are some but not all of the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

For ease of understanding, the concepts related to the embodiments of the present application will be explained first.

1. Network device

The device has a wireless transceiving function. Including but not limited to: an evolved node B (eNB or eNodeB) in a Long Term Evolution (LTE), a base station (gNodeB or gNB) or a transceiver node (TRP) in a New Radio (NR), a base station in a subsequent evolved system, an access node in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, and the like. The base station may be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. Multiple base stations may support the same technology network as mentioned above, or different technologies networks as mentioned above. The base station may contain one or more, co-sited or non co-sited TRPs.

2. Terminal device

The device has a wireless transceiving function. The terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in Industrial Control (Industrial Control), a vehicle-mounted terminal device, a wireless terminal in driverless Driving (Self Driving), a wireless terminal device in Remote Medical treatment (Remote Medical), a wireless terminal device in Smart Grid, a wireless terminal device in Transportation Safety (Transportation Safety), a wireless terminal device in Smart City (Smart City), a wireless terminal device in Smart Home (Smart Home), a wearable terminal device, and the like. The terminal device according to the embodiments of the present application may also be referred to as a terminal, a User Equipment (UE), an access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a remote User Equipment, a mobile device, a wireless communication device, a UE agent, or a UE apparatus. The terminal equipment may also be fixed or mobile.

3. Bandwidth part (BWP)

In the frequency domain, a BWP includes a positive consecutive integer number of resource units, such as a positive consecutive integer number of subcarriers, Resource Blocks (RBs), or Resource Block Groups (RBGs). The BWP may be a downlink BWP or an uplink BWP. The uplink BWP is used for the terminal to send signals to the network device, and the downlink BWP is used for the network device to send signals to the terminal.

In a 5G system, multiple BWPs may be configured within the overall system bandwidth. For each BWP, a parameter set (numerology) of the BWP may be configured independently by pre-configuration or by the network device signaling to the terminal device. The parameter sets may be the same or different for different BWPs. The parameter set may be defined by, but is not limited to, one or more of the following parameter information: subcarrier spacing, Cyclic Prefix (CP), information of slot, bandwidth of BWP, etc.

At most 4 dedicated BWPs can be configured for the uplink or the downlink, and for the same terminal device, only one BWP can be active in the uplink or the downlink at the same time, and the terminal device performs data transmission and reception and Physical Downlink Control Channel (PDCCH) retrieval on the active BWP.

4. BWP switching system

DCI-based BWP handover

The UE determines a target uplink BWP and a target downlink BWP to be switched according to a downlink control information DCI format 0_1 for scheduling uplink data and a partial Bandwidth indicator (Bandwidth part indicator) in the downlink control information DCI format1_1 for scheduling downlink data.

② BWP handover based on Radio Resource Control (RRC) information

And the UE determines a switched target uplink BWP and a switched target downlink BWP according to a first active uplink BWP-Id and a first active downlink BWP-Id in the RRC information.

Switching between BWP activation timing (BWP activity timer)

When the BWP inactivity timer of the UE is overtime, the UE switches the downlink BWP to a default downlink BWP, namely the downlink BWP corresponding to the default downlink BWP-Id in the configuration parameters of the serving cell.

The BWP handover in the embodiment of the present application is handover based on DCI.

5. Latency (T) of BWP handover _{BWPswitchDelay} )

The terminal device needs a certain processing time to complete BWP handover, and this processing time is called the delay of BWP handover. After receiving the scheduling DCI, the terminal equipment completes BWP switching after time delay. NR defines two different delay types according to the capability of the terminal device, as shown in table 1.

TABLE 1

Where μ is a parameter set index of a carrier of the PDCCH, and μ is 0,1,2, and 3 are respectively associated with subcarrier intervals of carriers transmitting the PDCCH, which are 15kHz, 30kHz, 60kHz, and 120 kHz.

If the subcarrier spacing is different for the old BWP and the new BWP, then the determination is based on which delay is large. For example, the old BWP is 60KHz (μ ═ 2), and the new BWP is 15KHz (μ ═ 0), then the delay of this BWP switching is 1 ms.

In addition, in order to facilitate clear description of technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items having substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

The technical scheme provided by the embodiment of the application can be applied to various communication systemsSystems, e.g. using fifth generation (5) ^th generation, 5G) communication technology, a New Radio (NR) communication system, a future evolution system or a multiple communication convergence system, and so on.

An application scenario to which the embodiment of the present application is applied is described below with reference to fig. 1.

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application. Referring to fig. 1, the communication system in this application scenario may include a network device 101 and at least one terminal device 102. The network device 101 can communicate (transmit signaling or transmit data) with a plurality of terminal devices 102.

The network device may configure BWPs with different bandwidth sizes for different terminal devices, and when one BWP is configured and activated, the data and control information sent upstream by the terminal device or the data and control information received downstream will be limited within the activated BWP. The terminal device can dynamically adjust the activated BWP according to the service condition, thereby saving the energy consumption of the terminal device.

The BWP configured in the system bandwidth will be described with reference to fig. 2.

Fig. 2 is a schematic structural diagram of different BWPs within the system bandwidth according to an embodiment of the present application. Please refer to fig. 2.

The network device configures 3 BWPs, BWP1, BWP2 and BWP3, respectively, for the terminal device within the system bandwidth. The sub-carrier interval of BWP1 is 15kHz, the bandwidth is 40MHz, and the terminal device can process a large amount of services in a short time in the BWP; the sub-carrier interval of BWP2 is 15kHz, the bandwidth is 10MHz, only the basic communication of the terminal device can be satisfied in the BWP; the BWP3 has a subcarrier spacing of 60kHz and a bandwidth size of 20 MHz. The use of specific 3 BWPs is as follows:

at the first moment, the terminal device is downloading the game installation package and needs a higher rate, so the network device configures BWP1 for the terminal device; at the second moment, the terminal device is playing an online game, and the required flow is small, so that the network device configures the BWP2 for the terminal device to meet the uplink and downlink speed requirements of the game; at the third moment, the network device finds that the bandwidth of BWP2 is subjected to strong bursty external interference, the signal quality is rapidly deteriorated, and the requirement of the terminal device for accessing the internet cannot be met, so the terminal device is urgently configured with BWP 3.

The terminal device can perform BWP handover according to the service requirement of the terminal device. The 3GPP protocol 38.133 describes the delay condition of BWP handover indicated by DCI, but how to perform BWP handover is not described in the protocol, so that the requirement of low delay can be met.

In view of this, embodiments of the present application provide a BWP handover method, which can directly perform handover according to target BWP radio configuration information when performing BWP handover, save handover time, and meet the low latency requirement of a protocol to the greatest extent.

Hereinafter, the technical means shown in the present application will be described in detail by specific examples. It should be noted that the following embodiments may exist independently or may be combined with each other, and the description of the same or displayed contents is not repeated in different embodiments.

Fig. 3 is a first flowchart illustrating a BWP handover method according to an embodiment of the present application. Referring to fig. 3, the method includes:

s301, receiving indication information, wherein the indication information is used for indicating switching to the target BWP.

The execution subject of the embodiment of the present application may be a terminal device, and may also be a BWP switching device provided in the terminal device. The BWP switching device may be implemented by software or by a combination of software and hardware.

The indication information may be received by: and receiving DCI, wherein the DCI comprises indication information.

The DCI may be DCI in which the scheduling terminal device receives Physical Downlink Shared Channel (PDSCH) data, and may be in a DCI format1_ 1; the scheduling terminal device may also receive a DCI of Physical Uplink Shared Channel (PUSCH) data, and the format of the DCI may be DCI format 0_ 1.

S302, obtaining the subcarrier interval of the current BWP.

The subcarrier spacing of the current BWP is the same as that of the target BWP.

The subcarrier spacing of the current BWP may be determined according to the configuration information of the current BWP.

The subcarrier spacing includes a first subcarrier spacing, which may be 15kHz, or a second subcarrier spacing, which may be 30 kHz.

S303, determining target BWP radio frequency configuration information according to the indication information.

The indication information may indicate an identification of the target BWP.

The target BWP radio frequency configuration information may include an identifier of the target BWP, a center frequency point of the target BWP, a subcarrier interval of the target BWP, a cyclic prefix, a bandwidth of the target BWP, and a frequency domain start position of the target BWP.

S304, switching to the target BWP according to the subcarrier interval and the target BWP radio frequency configuration information.

Different subcarrier intervals may correspond to different BWP switching schemes, and the difference between different BWP switching schemes is only that the time slots for switching are different.

For example, if the subcarrier spacing is the first subcarrier spacing, as shown in fig. 4A, DCI may be received in the current time slot n, and the current time slot n is switched to the target BWP at the second time, and a new task is executed in the first time slot n +1 and the target BWP; as shown in fig. 4B, DCI may be received in the current slot n, a switch may be made to the target BWP at the first time, and a new task may be executed in the second slot n +2 and the target BWP.

If the subcarrier spacing is the second subcarrier spacing, as shown in fig. 4B, DCI may be received in the current time slot n, and the target BWP is switched to the first time slot, and a new task is executed in the second time slot n +2 and the target BWP.

In the embodiment shown in fig. 3, the terminal device receives indication information indicating a handover to the target BWP; acquiring a subcarrier interval of the current BWP; determining target BWP radio frequency configuration information according to the indication information; and switching to the target BWP according to the subcarrier interval and the target BWP radio frequency configuration information. When BWP switching is carried out, switching can be directly carried out according to target BWP radio frequency configuration information, switching time is saved, and the low-delay requirement of a protocol can be met to the greatest extent.

Different subcarrier spacings may correspond to different BWP switching manners, and based on the embodiment shown in fig. 3, the BWP switching method will be described in detail below by taking different subcarrier spacings as an example.

Fig. 5 is a flowchart illustrating a BWP handover method according to an embodiment of the present application. Referring to fig. 5, taking the subcarrier spacing as the first subcarrier spacing as an example, the method includes:

s501, indication information is received, and the indication information is used for indicating switching to the target BWP.

It should be noted that the execution process of S501 may refer to the execution process of S301, and is not described herein again.

S502, obtaining the subcarrier interval of the current BWP.

It should be noted that the execution process of S502 may refer to the execution process of S302, and is not described herein again.

S503, determining the target BWP link configuration information and the target BWP radio frequency configuration information according to the indication information.

The target BWP link configuration information includes target BWP uplink configuration information or target BWP downlink configuration information.

The target BWP link configuration information and the target BWP radio configuration information may be determined according to the BWP identification indicated in the indication information, where the BWP identification indicated in the indication information is the identification of the target BWP.

And after receiving the DCI, the terminal equipment analyzes the DCI, resets the BWP configuration information after analyzing the DCI to be scheduled, and determines the target BWP link configuration information and the BWP link configuration information according to the reset BWP configuration information and the BWP identification indicated by the DCI.

The BWP configuration information includes BWP downlink configuration information, BWP uplink configuration information, and BWP link configuration information.

The terminal device may first obtain BWP configuration information, and preprocess the BWP configuration information to obtain BWP radio frequency configuration information, BWP uplink configuration information, and BWP downlink configuration information; and the BWP radio frequency configuration information, the BWP uplink configuration information and the BWP downlink configuration information can be reset according to the indication information.

The BWP uplink configuration information may include identification of different BWPs, Random Access Channel (RACH) configuration information, PUSCH configuration information, Physical Uplink Control Channel (PUCCH) configuration information, Sounding Reference Signal (SRS) configuration information, and uplink semi-persistent scheduling (SPS-UL) configuration information.

The BWP downlink configuration information may include an identifier of a different BWP, PDCCH configuration information, PDSCH configuration information, and downlink semi-persistent scheduling (SPS-DL) configuration information.

The terminal device may acquire the BWP configuration information in the following manner: and acquiring an RRC reconfiguration message, wherein the RRC reconfiguration message comprises the configuration information of all BWPs.

For ease of understanding, the structure of the BWP configuration information will be described in detail below with reference to fig. 6.

Fig. 6 is a schematic structural diagram of BWP configuration information according to an embodiment of the present application. Please refer to fig. 6, which illustrates an example of 4 BWPs. The terminal device receives the configuration information of 4 BWPs, pre-processes the configuration information, respectively obtains 4 BWP uplink configuration information, 4 BWP downlink configuration information, and 4 BWP radio configuration information, places the 4 BWP uplink configuration information in a physical layer (PHY) uplink module, places the 4 BWP downlink configuration information in a PHY downlink module, and places the 4 BWP radio configuration information in a PHY resource arbitration module.

The terminal device can divide the BWP configuration information into different modules by preprocessing the BWP configuration information, and can directly call corresponding information in different modules when BWP switching is carried out, thereby reducing the time delay required by BWP switching.

The target BWP link configuration information and the target BWP radio configuration information may also be determined according to the indication information after the configuration task is stopped.

S504, if the current time slot is determined to have the task being executed, the configuration task is stopped in the first time slot, and the radio frequency is stopped.

The task currently executed by the current time slot may be a configuration task of the previous time slot, or a PDSCH task or a PUSCH task that needs to be completed by the current time slot indicated by the DCI of the current time slot.

That is, the first time slot may configure a task for the second time slot, the second time slot may perform the task configured by the first time slot, and may configure a task for the third time slot.

The first time slot is the next time slot of the current time slot.

The configuration task may be a PDSCH task or a PUSCH task of the next slot.

S505, determining the task information of the target BWP according to the link configuration information of the target BWP.

The task information of the target BWP may be determined according to the target BWP link configuration information during the time slot when the radio frequency is stopped.

The task information may be PDSCH task information or PUSCH task information.

S506, at the first moment, switching to the target BWP according to the target BWP radio frequency configuration information.

The first time is the intersection point of the first time slot and the second time slot, and the second time slot is the next time slot of the first time slot.

And S507, executing the task on the target BWP according to the task information.

The task may be executed on the target BWP in the next slot where the radio frequency is stopped.

For example, if the configuration task and the radio frequency are stopped in the first time slot, the target BWP may be switched to at the first time slot, and the task may be executed on the target BWP in the second time slot.

In the embodiment shown in fig. 5, the terminal device receives indication information indicating a handover to the target BWP; acquiring a subcarrier interval of the current BWP; determining target BWP link configuration information and target BWP radio frequency configuration information according to the indication information; if the current time slot is determined to have a task which is being executed, stopping configuring the task and stopping radio frequency in the first time slot; determining task information of the target BWP according to the link configuration information of the target BWP; at the first moment, switching to the target BWP according to the target BWP radio frequency configuration information; according to the task information, the task is executed on the target BWP. When switching BWP, the switching can be directly carried out according to the target BWP radio frequency configuration information, and the terminal device only needs about 250 mus for completing the BWP switching, which is far lower than the requirement of 1ms specified by the protocol.

Fig. 5 illustrates a BWP handover procedure when the subcarrier spacing is the first subcarrier spacing and there is a task in execution in the current time slot, and fig. 7 is combined to describe the BWP handover procedure when the subcarrier spacing is the first subcarrier spacing and there is no task in execution in the current time slot.

Fig. 7 is a third flowchart illustrating a BWP switching method according to an embodiment of the present application. Referring to fig. 7, taking the subcarrier spacing as the first subcarrier spacing as an example, the method includes:

s701, receiving indication information, wherein the indication information is used for indicating switching to the target BWP.

It should be noted that the execution process of S701 may refer to the execution process of S301, and is not described herein again.

S702, acquiring the subcarrier interval of the current BWP.

It should be noted that the execution process of S702 may refer to the execution process of S302, and is not described herein again.

S703, determining the target BWP link configuration information and the target BWP radio frequency configuration information according to the indication information.

It should be noted that the execution process of S703 may refer to the execution process of S503, and is not described herein again.

S704, determining that the current time slot has no task being executed, stopping configuring the task and stopping radio frequency in the current time slot.

The indicated task of the DCI received in the current slot may be a task of a first slot, and at this time, if K0 or K2 is 0 or 1, the configuration task may be stopped in the current slot, where K0 is a slot interval between the downlink scheduling DCI and the PDSCH scheduled by the downlink scheduling DCI, and K2 is a slot interval between the uplink scheduling DCI and the PUSCH scheduled by the uplink scheduling DCI.

S705, determining the task information of the target BWP according to the link configuration information of the target BWP.

It should be noted that the execution process of S705 may refer to the execution process of S505, and is not described herein again.

And S706, switching to the target BWP at the second moment according to the target BWP radio frequency configuration information.

The second time is the intersection point of the current time slot and the first time slot.

And S707, executing the task on the target BWP according to the task information.

If the configuration task and the radio frequency are stopped in the current time slot, the target BWP can be switched to at the second moment, and the task is executed on the target BWP in the first time slot.

In the embodiment shown in fig. 7, the terminal device receives indication information indicating a handover to the target BWP; acquiring a subcarrier interval of the current BWP; determining target BWP link configuration information and target BWP radio frequency configuration information according to the indication information; stopping configuring the task and stopping the radio frequency in the current time slot if the current time slot is determined not to have the task being executed; determining task information of the target BWP according to the link configuration information of the target BWP; at the second moment, switching to the target BWP according to the target BWP radio frequency configuration information; according to the task information, the task is executed on the target BWP. When the BWP switching is carried out, the switching can be directly carried out according to the target BWP radio frequency configuration information, and the terminal device only needs about 250 mus to complete the BWP switching, which is far lower than the requirement of 1ms specified by the protocol.

The embodiments shown in fig. 5-7 illustrate the BWP handover procedure when the subcarrier spacing is the first subcarrier spacing, and the BWP handover procedure when the subcarrier spacing is the second subcarrier spacing is described below with reference to fig. 8.

Fig. 8 is a fourth flowchart illustrating a BWP switching method according to an embodiment of the present application. Referring to fig. 8, taking the subcarrier spacing as the second subcarrier spacing as an example, the method includes:

s801, receiving indication information, wherein the indication information is used for indicating switching to the target BWP.

It should be noted that the execution process of S801 may refer to the execution process of S301, and is not described herein again.

S802, obtaining the subcarrier interval of the current BWP.

It should be noted that the execution process of S802 may refer to the execution process of S302, and is not described herein again.

And S803, determining the target BWP link configuration information and the target BWP radio frequency configuration information according to the indication information.

It should be noted that the execution process of S803 may refer to the execution process of S503, and is not described herein again.

And S804, stopping the configuration task in the current time slot.

If there is no task to be executed in the current time slot, the configuration task in the first time slot may be stopped in the current time slot.

S805, determining the task information of the target BWP according to the target BWP link configuration information.

The task information of the target BWP may be determined based on the target BWP link configuration information after stopping the configuration task at the current time slot.

S806, stopping the radio frequency in the first time slot, and switching to the target BWP at the first time according to the target BWP radio frequency configuration information.

The first time is the intersection point of the first time slot and the second time slot, the first time slot is the next time slot of the current time slot, and the second time slot is the next time slot of the first time slot.

S807, a task is executed on the target BWP based on the task information.

It should be noted that the execution process of S808 may refer to the execution process of S507, and is not described herein again.

In the embodiment shown in fig. 8, indication information for indicating a handover to a target BWP is received; acquiring a subcarrier interval of the current BWP; determining target BWP link configuration information and target BWP radio frequency configuration information according to the indication information; stopping the configuration task at the current time slot; determining task information of the target BWP according to the link configuration information of the target BWP; stopping radio frequency in a first time slot, and switching to a target BWP at the first time according to the radio frequency configuration information of the target BWP; according to the task information, the task is executed on the target BWP. When the BWP switching is carried out, the switching can be directly carried out according to the target BWP radio frequency configuration information, and the terminal device only needs about 250 mus to complete the BWP switching, which is far lower than the requirement of 1ms specified by the protocol.

In addition to any of the above embodiments, the BWP switching method will be described below by way of example.

Example 1

The terminal device receives an RRC reconfiguration message, wherein the RRC reconfiguration message comprises 4 BWP configuration information, and the 4 BWP configuration information is preprocessed to respectively obtain 4 BWP uplink configuration information, 4 BWP downlink configuration information and 4 BWP radio frequency configuration information.

The terminal equipment receives DCI, wherein the DCI comprises indication information; analyzing the DCI, and resetting 4 BWP uplink configuration information, 4 BWP downlink configuration information and 4 BWP radio frequency configuration information after analyzing the DCI to be scheduled; and determining that the subcarrier interval is 15kHz according to the indication information, and judging whether the current slot n has a PDSCH task or a PUSCH task which is being executed.

If not, stopping the configuration task at the current slot n, acquiring target BWP link configuration information and target BWP radio frequency configuration information according to a BWP identifier indicated by DCI, generating the task information of the target BWP according to the target BWP link configuration information, stopping radio frequency at the current slot n, switching to the target BWP according to the target BWP radio frequency configuration information at a second moment, wherein the second moment is the intersection point of the current slot and the first slot, and executing a new PDSCH task or a PUSCH task at the first slot n + 1.

If yes, stopping configuration of the task in a first slot n +1, acquiring target BWP link configuration information and target BWP radio frequency configuration information according to a BWP identification indicated by DCI, generating task information of the target BWP according to the target BWP link configuration information, stopping radio frequency in the first slot n +1, switching to the target BWP according to the target BWP radio frequency configuration information at a first moment, wherein the first moment is an intersection point of the first slot and a second slot, and executing a new PDSCH task or a PUSCH task in the second slot n + 2.

Example 2

The terminal equipment receives DCI, wherein the DCI comprises indication information; analyzing the DCI, and resetting 4 BWP uplink configuration information, 4 BWP downlink configuration information and 4 BWP radio frequency configuration information after analyzing the DCI to be scheduled; determining the subcarrier interval to be 30kHz according to the indication information; whether the current slot n has a task being executed or not, stopping configuring the task at the current slot n; determining task information of the target BWP according to the link configuration information of the target BWP; and stopping radio frequency in a first slot n +1, switching to a target BWP at a first moment according to the radio frequency configuration information of the target BWP, wherein the first moment is the intersection point of the first slot and a second slot, and executing a new PDSCH task or a PUSCH task in the second slot n + 2.

The embodiment of the application provides different BWP switching methods for different subcarrier intervals, and the BWP switching can be completed by the different BWP switching methods only about 250 μ s, which is far lower than the 1ms requirement specified by the protocol.

Fig. 9 is a schematic structural diagram of a BWP switching device according to an embodiment of the present application. Referring to fig. 9, the BWP switching device 10 includes: a receiving module 11, a first obtaining module 12, a first determining module 13 and a switching module 14, wherein,

the receiving module 11 is configured to receive indication information, where the indication information is used to indicate a handover to a target BWP;

the first obtaining module 12 is configured to obtain a subcarrier interval of a current BWP;

the first determining module 13 is configured to determine target BWP radio frequency configuration information according to the indication information;

the switching module 14 is configured to switch to a target BWP according to the subcarrier spacing and the target BWP radio frequency configuration information.

In one possible embodiment, the subcarrier spacing is the first subcarrier spacing; the switching module 14 is specifically configured to:

In one possible embodiment, the subcarrier spacing is the second subcarrier spacing; the switching module 14 is specifically configured to:

stopping the configuration task at the current time slot;

stopping the radio frequency in the first time slot;

In a possible embodiment, the apparatus 10 further comprises a second determining module, a third determining module and an executing module, wherein,

the second determining module is configured to determine target BWP link configuration information according to the indication information;

the third determining module is configured to determine task information of a target BWP according to the target BWP link configuration information;

the execution module is configured to execute a task on the target BWP according to the task information.

In a possible embodiment, the apparatus 10 further comprises a second obtaining module, a preprocessing module, and a resetting module, wherein,

the second obtaining module is configured to obtain BWP configuration information;

the preprocessing module is used for preprocessing the BWP configuration information to obtain BWP radio frequency configuration information, BWP uplink configuration information and BWP downlink configuration information;

the resetting module is configured to reset the BWP radio frequency configuration information, the BWP uplink configuration information, and the BWP downlink configuration information according to the indication information.

The BWP switching device 10 provided in the embodiment of the present application can implement the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, and are not described again here.

Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application. Referring to fig. 10, the electronic device 20 may include: a transceiver 21, a memory 22, a processor 23. The transceiver 21 may include: a transmitter and/or a receiver. The transmitter may also be referred to as a sender, a transmitter, a sending port or a sending interface, and the like, and the receiver may also be referred to as a receiver, a receiving port or a receiving interface, and the like. Illustratively, the transceiver 21, the memory 22, and the processor 23 are connected to each other by a bus 24.

The memory 22 is used for storing program instructions;

the processor 23 is configured to execute the program instructions stored in the memory, so as to enable the electronic device 20 to execute any one of the BWP switching methods described above.

The transceiver 21 is used to perform a transceiving function of the electronic device 20 in the BWP switching method.

The electronic device may be a chip, a module, an Integrated Development Environment (IDE), or the like.

The electronic device shown in the embodiment of fig. 10 may execute the technical solution shown in the above method embodiment, and the implementation principle and the beneficial effect are similar, which are not described herein again.

An embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the BWP switching method described above.

Embodiments of the present application may also provide a computer program product, which includes a computer program, and when the computer program is executed by a processor, the BWP switching method described above can be implemented.

The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the application. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A bandwidth section BWP switching method, comprising:

receiving indication information for indicating a handover to a target BWP;

acquiring a subcarrier interval of the current BWP;

2. The method of claim 1, wherein the subcarrier spacing comprises a first subcarrier spacing or a second subcarrier spacing.

3. The method of claim 2, wherein the subcarrier spacing is the first subcarrier spacing; switching to a target BWP according to the subcarrier interval and the target BWP radio frequency configuration information; the method comprises the following steps:

4. The method of claim 2, wherein the subcarrier spacing is the first subcarrier spacing; switching to a target BWP according to the subcarrier interval and the target BWP radio frequency configuration information; the method comprises the following steps:

at the second moment, switching to the target BWP according to the target BWP radio frequency configuration information; the second moment is the intersection point of the current time slot and the first time slot.

5. The method of claim 2, wherein the subcarrier spacing is the second subcarrier spacing; switching to a target BWP according to the subcarrier interval and the target BWP radio frequency configuration information; the method comprises the following steps:

stopping the configuration task at the current time slot;

stopping radio frequency in a first time slot;

6. The method according to any one of claims 1-5, further comprising:

executing a task on the target BWP according to the task information.

7. The method according to claim 6, wherein the target BWP link configuration information comprises target BWP upstream configuration information or target BWP downstream configuration information.

8. The method according to any one of claims 1-7, further comprising:

acquiring BWP configuration information;

9. A BWP switching device, comprising: a receiving module, an obtaining module, a determining module and a switching module, wherein,

10. An electronic device, comprising: a memory, a processor;

the memory is used for storing computer execution instructions;

the processor executing computer-executable instructions stored by the memory causes the processor to perform the BWP switching method of any one of claims 1 to 8.

11. A computer readable storage medium having stored therein computer executable instructions for implementing the BWP switching method according to any one of claims 1 to 8 when executed by a processor.

12. A computer program product comprising a computer program which, when executed by a processor, implements the BWP switching method of any one of claims 1 to 8.