CN112601254A

CN112601254A - BWP switching method and terminal equipment

Info

Publication number: CN112601254A
Application number: CN202011480647.0A
Authority: CN
Inventors: 王燕
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-04-02

Abstract

The embodiment of the invention discloses a method for switching BWP (broadband access protocol) and terminal equipment, which are applied to the technical field of communication and can solve the problem that when the application on the terminal equipment is used, if the bandwidth is not suitable for the current application, the power consumption of the terminal equipment is increased or the data transmission rate is influenced. The method comprises the following steps: operating at a first fractional bandwidth BWP; if the target application running in the foreground in the terminal device is an application allowing the use of the target BWP, sending a BWP switching request message to the network device; the BWP handover request message is used to request the network device to handover to a target BWP, where the target BWP is a second BWP with a bandwidth greater than the first BWP, or the target BWP is a third BWP with a bandwidth less than the first BWP.

Description

BWP switching method and terminal equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for switching BWPs and a terminal device.

Background

At present, a terminal device performs BWP switching according to a reconfiguration message or a Downlink Control Information (DCI) instruction issued by a network device. Different applications on the terminal device have different functions, so that the requirements for the data transmission rate are different, and when the applications on the terminal device are used, if the bandwidth is not suitable for the current application, the power consumption of the terminal device is increased, or the data transmission rate is affected.

Disclosure of Invention

Embodiments of the present invention provide a method for switching BWP and a terminal device, so as to solve the problem in the prior art that when an application on the terminal device is used, if a bandwidth is not suitable for a current application, power consumption of the terminal device may be increased or a data transmission rate may be affected.

In order to solve the above technical problem, the embodiment of the present invention is implemented as follows:

in a first aspect, a method for switching BWP is provided, including: operating at a first fractional bandwidth BWP;

if the target application running in the foreground in the terminal device is an application allowing the use of the target BWP, sending a BWP switching request message to a network device;

wherein the BWP handover request message is configured to request the network device to handover to the target BWP, and the target BWP is a second BWP with a bandwidth greater than the first BWP or a third BWP with a bandwidth less than the first BWP.

In a second aspect, a terminal device is provided, which includes:

a processing module configured to operate at a first fractional bandwidth BWP;

a sending module, configured to send a BWP handover request message to a network device if a target application running in the foreground in the terminal device is an application that allows use of a target BWP;

In a third aspect, a terminal device is provided, including: a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing a method of switching BWP as described in the first aspect.

In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the method of switching BWP as in the first aspect.

When the terminal device operates in the first partial bandwidth BWP, the terminal device may detect whether a target application currently running in a foreground is an application that allows use of the target BWP, and if so, the terminal device may send a BWP handover request message to the network device; the BWP handover request message is used to request the network device to handover to a target BWP, where the target BWP is a second BWP with a bandwidth greater than the first BWP or a third BWP with a bandwidth less than the first BWP. With this scheme, the terminal device may transmit a BWP handover request message for requesting handover to the target BWP to the network device upon determining that the currently running target application is an application that is allowed to use the target BWP, so that the terminal device may handover to the target BWP that is more suitable for the application that the terminal device is running, and thus may reduce power consumption of the terminal device or increase a data transmission rate.

Drawings

Fig. 1 is a schematic diagram of a 5G application scenario provided in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a BWP allocation provided by an embodiment of the present invention;

fig. 3 is a block diagram of a wireless communication system according to an embodiment of the present invention;

fig. 4 is a first flowchart illustrating a BWP switching method according to an embodiment of the present invention;

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

fig. 6 is a first schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.

It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

First, the related technical content of the embodiment of the invention is introduced:

partial BandWidth (BWP) is one of the most critical concepts that 5G differs from 4G, and BWP can be called "slice" of wireless resources, which can make 5G flexibly support various types of terminal devices in various scenarios.

A big difference between 5G and 4G is that the carrier spectrum bandwidth of 5G is larger than that of 4G. The following first says from 4G:

the 3GPP R7 protocol specifies that the carrier bandwidth of 4G is 20MHz at most; carrier aggregation is introduced at R10, a maximum of 5 carriers are supported, and the maximum operating bandwidth of 4G is extended to 100 MHz. This bandwidth can support a peak download rate of 1 Gbps. In the enhanced standard (i.e., LTE Advanced Pro) version of 3GPP, the maximum number of carrier aggregation is increased to 32, so that the 4G can support a bandwidth of 640MHz altogether, and a network device (base station) as a system device with a large volume and strong performance can support such a large bandwidth, and a terminal device that can communicate with the base station cannot support such a large bandwidth as multiple carriers due to the limitations of transmission power and endurance capability, so that at present, even a high-end 4G mobile phone usually supports at most 5 carrier aggregation, and supports a bandwidth of 100MHz at most.

With the arrival of 5G, the carrier bandwidth has been expanded more. Each carrier can support 100MHz at most, millimeter waves even reach 400MHz per carrier, and 5G can support 16 carrier aggregation at most according to the protocol, so that 5G can support a super-large frequency spectrum bandwidth of 1.6GHz to 6.4GHz at most.

Fig. 1 is a schematic diagram of an application scenario of 5G, and although the larger the spectral bandwidth is, the higher the peak rate can be supported, the initial requirement of 5G is to satisfy three important scenarios described by the triangle vertices shown in fig. 1: enhanced Mobile Broadband (eMBB), Massive machine type Communication (mMTC), Ultra-Reliable and Low Latency Communication (uRLLC).

1. eMBB: high transmission rates are required.

2. mMTC: in the 5G era, everything is interconnected, and various Internet of things applications such as smart cities and smart families are needed.

3. And (3) uRLLC: industrial automation, automatic driving, and the like are future trends.

The ultra-large frequency spectrum bandwidth is only suitable for an eMBB scene, and the Internet of things vertical industry scenes such as mMTC and uRLLC do not need too high speed, and do not need too large bandwidth. That is, from 5G, the mobile phone is no longer the most important type of terminal device, and more are smart water meter, smart electric meter, smart air conditioner, unmanned aerial vehicle, auto-pilot automobile, industrial robot, etc., and what these terminal devices need may not be high download rate, but low cost, large connection, low time delay, high reliability, etc.

Based on this requirement of the 5G scenario, if all types of terminal devices are made to support large bandwidth, the cost is very high. Even for terminal devices such as mobile phones, the service rate of common applications such as telephone, instant messaging (WeChat), online games and small video streams is not high, and the service bearer can be satisfied by using carriers of 5MHz or less. Because the transmitting power of the terminal equipment is generally not high, if signals are transmitted on a large frequency spectrum, limited power can be dispersed to a large bandwidth, so that energy is excessively dispersed (power spectrum density is low), uplink coverage is seriously affected, and the point is obviously reflected on the terminal equipment of the internet of things. In addition, the number of the terminal devices of the internet of things is very large, the requirement on the speed is low, and the goal of 5G ten-thousand-object interconnection is to achieve millions of connections per square kilometer, so that the cost of the terminal devices is required to be low, and large bandwidth does not need to be supported.

Based on these considerations, 5G introduces the concept of BWP, with the intuitive understanding of "fractional bandwidth". With BWP, the terminal device does not need to support the whole 5G carrier bandwidth, and can use 5G service by taking out a small segment of the carrier in 5G, where BWP is equivalent to dividing the 5G spectrum into many small blocks within a certain time, each BWP can use different parameter sets, and its bandwidth, subcarrier spacing, and other control parameters can be different, which is equivalent to dividing several configured different sub-cells within the 5G cell to adapt to different types of terminal devices and different service types.

Fig. 2 is a schematic diagram of BWP allocation. The bandwidth of BWP1 is 40MHz, the bandwidth is larger, but the duration is short; BWP2 has a bandwidth of 10MHz, the bandwidth is relatively small but the duration is long; the bandwidth of BWP3 is 20 MHz.

Illustratively, at the first moment, the terminal device is downloading the game installation package file, requiring a higher rate, and the network device may configure the terminal device with a large bandwidth BWP (i.e., BWP 1); at the second moment, the terminal device is playing an online game, the required flow is small, and at this moment, the network device configures a small-bandwidth BWP (namely 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 BWP1 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 that a new bandwidth (i.e., BWP3) can be configured to the terminal device urgently. A maximum of 4 BWPs can be supported by one terminal, but only one terminal is active at a time. Therefore, the spectrum resources can be used as required, and the terminal equipment does not need to work on the whole carrier bandwidth like 4G, so that the method is more flexible and saves more power.

At present, a terminal device performs BWP switching according to a reconfiguration message or a Downlink Control Information (DCI) instruction issued by a network device. When the application on the terminal device is used, if the bandwidth is not suitable for the current application, the power consumption of the terminal device may be increased, or the data transmission rate may be affected.

For example, in a scenario where a terminal device needs a high data transmission rate, if the bandwidth of the BWP of the terminal device is low, the current requirement for the high data transmission rate cannot be met, which causes a reduction in the data transmission rate and may affect the user experience.

For example, in a scenario where the terminal device does not need a high data transmission rate, if the bandwidth of the BWP of the terminal device is high, the power consumption of the terminal device increases, which may cause the overall temperature of the terminal device to rise, and may cause slow response of other modules such as the CPU of the terminal device.

The BWP switching method provided in the embodiment of the present invention may be applied to an architecture diagram shown in fig. 3, where the network device may include a core network device and a base station.

The base station in fig. 3 may configure a first partial bandwidth BWP for the terminal device, and when the terminal device operates in the first BWP, the terminal device may detect whether the target application currently running in the foreground is an application that allows using the target BWP, and if yes, the terminal device may send a BWP handover request message to the network device; the BWP handover request message is used to request the network device to handover to a target BWP, where the target BWP is a second BWP with a bandwidth greater than the first BWP or a third BWP with a bandwidth less than the first BWP. With this scheme, the terminal device may transmit a BWP handover request message for requesting handover to the target BWP to the network device upon determining that the currently running target application is an application that is allowed to use the target BWP, so that the terminal device may handover to the target BWP that is more suitable for the application that the terminal device is running, and thus may reduce power consumption of the terminal device or increase a data transmission rate.

It should be noted that the architecture diagram of the wireless communication system shown in fig. 3 is only an exemplary illustration, and in practice, the system may include more terminal devices or network devices, and the embodiment of the present invention is not limited thereto.

Optionally, the indication Information in the embodiment of the present invention includes physical layer signaling, for example, at least one of Downlink Control Information (DCI), Radio Resource Control (RRC) signaling, and Media Access Control Element (MAC CE).

Optionally, the high layer parameter or the high layer signaling in the embodiment of the present invention includes at least one of a Radio Resource Control (RRC) signaling and a Media Access Control Element (MAC CE).

In this embodiment, the terminal device may be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, a user equipment, or the like.

The terminal device may be a Station (ST) in a WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next generation communication system such as an NR Network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) Network, and the like.

In the embodiment of the invention, 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, such as airplanes, balloons, satellites, and the like.

In the embodiment of the present invention, 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 device in industrial control (industrial control), a wireless terminal device in self driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in city (smart city), a wireless terminal device in smart home (smart home), or the like.

By way of example, and not limitation, in embodiments of the present invention, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

The network device related to the embodiment of the invention can be an access network device. The access network device may be a long-term evolution (LTE) system, a next-generation mobile communication system (NR), or an evolved base station (evolved Node B) in an authorized assisted access long-term evolution (LAA-LTE) system, such as a macro base station, a micro base station (also referred to as a "small base station"), a pico base station, an Access Point (AP), a Transmission Point (TP), or a new generation base station (new generation Node B).

In this embodiment of the present invention, the network device may be a device for communicating with a mobile device, and the network device may be an Access Point (AP) in a WLAN, a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB or eNodeB) in LTE, a relay Station or an Access Point, a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a PLMN network for future evolution, or a network device in an NTN network.

In this embodiment of the present invention, a network device may provide a service for a cell, and a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), and the Small cell may include: urban cells (Metro cells), Micro cells (Micro cells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.

The technical scheme of the embodiment of the invention can be applied to various communication systems, such as: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an Advanced Long Term Evolution (LTE-A) System, a New Radio (NR) System, an Evolution System of an NR System, an LTE (LTE-based Access to unlicensed spectrum, an LTE-U) System on an unlicensed spectrum, an NR (NR-based Access to unlicensed spectrum, an NR-U) System on an unlicensed spectrum, a Non-Terrestrial communication network (UMTS-based network, UMTS) System, a Universal Mobile telecommunications network (UMTS) System, WLAN), Wireless Fidelity (WiFi), a fifth Generation communication (5th-Generation, 5G) system, or other communication systems, etc.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a, and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship. It should be understood that "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication of an association relationship. For example, a indicates B, which may mean that a directly indicates B, e.g., B may be obtained by a; it may also mean that a indicates B indirectly, for example, a indicates C, and B may be obtained by C; it can also mean that there is an association between a and B. In the description of the embodiments of the present invention, the term "correspond" may indicate that there is a direct correspondence or an indirect correspondence between the two, may also indicate that there is an association between the two, and may also indicate and be indicated, configure and configured, and so on.

The execution subject of the method for switching a BWP provided in the embodiment of the present invention may be the terminal device described above, or may also be a functional module and/or a functional entity capable of implementing the method for switching a BWP in the terminal device, which may be determined specifically according to actual usage requirements, and the embodiment of the present invention is not limited thereto. The following takes a terminal device as an example to exemplarily describe the method for switching BWP according to an embodiment of the present invention.

The method for switching the BWP provided by the embodiment of the invention can be applied to the scene of switching the BWP by the terminal equipment.

As shown in fig. 4, an embodiment of the present invention provides a method for switching BWPs, where the method includes:

401. the network device indicates the first BWP to the terminal device.

In the embodiment of the present invention, the network device may pre-configure one BWP or multiple BWPs to the terminal device.

Alternatively, the network device may indicate the first BWP to the terminal device through the indication information.

Optionally, when the network device configures four BWPs for the terminal device, a certain BWP may be indicated by 2 bits.

Optionally, the network device may configure BWP to the terminal device through an RRC reconfiguration message.

Illustratively, assuming that the network device is preconfigured with BWP1, BWP2, BWP3 and BWP4 for the end device, when 2bit is used to indicate these four BWPs respectively, BWP1 may be represented by 00, BWP2 may be represented by 01, and BWP3 may be represented by 10, BWP4 may be represented by 11.

Illustratively, assuming that the first BWP is BWP1, the network device may carry field 00 in the indication information to indicate the first BWP to the end device.

402. And the terminal equipment acquires the target application running in the foreground.

In the embodiment of the present invention, when the terminal device operates in the first BWP, the terminal device may obtain the target application currently running in the foreground.

403. The terminal device detects whether the target application is an application that is allowed to use the target BWP.

In this embodiment of the present invention, if the target application is an application that allows using the target BWP, the terminal device may perform the following step 404; if the target application is an application that is not allowed to use the target BWP, the terminal device may return to performing step 402.

Alternatively, the target BWP may include a second BWP having a bandwidth greater than the first BWP, or a third BWP having a bandwidth less than the first BWP.

Alternatively, for applications that allow the use of the target BWP, the terminal devices may be distinguished by setting a white list or an application flag.

(1) The terminal device may set a white list, which may include applications that are allowed to use a second BWP having a bandwidth greater than the first BWP, and may also include applications that are allowed to use a third BWP having a bandwidth less than the first BWP.

Illustratively, it is assumed that the terminal device sets a white list to allow an application using a second BWP having a bandwidth larger than that of the first BWP, the white list includes: application 1, application 2, and application 3. Assuming that the first BWP configured by the network device to the terminal device is 20M and the current application running in the foreground of the terminal device is application 1, which is in the white list, the terminal device may perform step 404 below to request a switch to a second BWP with a larger bandwidth.

Illustratively, it is assumed that the terminal device sets a white list to allow an application using a second BWP having a bandwidth larger than that of the first BWP, the white list includes: application 1, application 2, and application 3. Assuming that the first BWP configured by the network device to the terminal device is 20M, and the current application running in the foreground of the terminal device is application 4, which is not in the white list, the terminal device may return to perform step 402.

Illustratively, it is assumed that the terminal device sets a white list to allow an application using a third BWP having a bandwidth smaller than that of the first BWP, the white list includes: application 4, application 5, application 6. Assuming that the first BWP configured by the network device to the terminal device is 20M and the current application running in foreground by the terminal device is application 4, which is in the white list, the terminal device may perform step 404 below to request a switch to a third BWP with a smaller bandwidth.

(2) The terminal device may further mark an application that is allowed to use a second BWP having a bandwidth greater than that of the first BWP, such that the marked application is an application that is allowed to use the second BWP having a bandwidth greater than that of the first BWP, and the unmarked application is an application that is allowed to use a third BWP having a bandwidth less than that of the first BWP.

Illustratively, it is assumed that the terminal device marks applications that are allowed to use a second BWP having a bandwidth larger than that of the first BWP, i.e., application 1, application 2, and application 3, respectively. Assuming that the first BWP configured by the network device to the terminal device is 20M and the current application running in the foreground of the terminal device is application 1, marked as such, the terminal device may perform 404 to request a switch to a second BWP with a larger bandwidth.

Illustratively, it is assumed that the terminal device marks applications that are allowed to use a second BWP having a bandwidth larger than that of the first BWP, i.e., application 1, application 2, and application 3, respectively. Assuming that the first BWP configured by the network device to the terminal device is 20M and the current application running in the foreground of the terminal device is application 4, which is not marked, the terminal device may return to perform step 402 above.

(3) The terminal device may further mark an application that is allowed to use a third BWP having a bandwidth smaller than the first BWP, such that the marked application is an application that is allowed to use the third BWP having a bandwidth smaller than the first BWP, and the unmarked application is an application that is allowed to use a second BWP having a bandwidth larger than the first BWP.

Illustratively, it is assumed that the terminal device marks applications that are allowed to use a third BWP having a bandwidth smaller than that of the first BWP, i.e., application 4, application 5, and application 6, respectively. Assuming that the first BWP that the network device configures to the terminal device is 20M and the current application running in the foreground of the terminal device is application 4, marked, the terminal device may perform 404 to request a switch to a third BWP of smaller bandwidth.

Alternatively, the terminal device may adapt the application that is allowed to use the target BWP according to the different requirements of the different applications for power consumption and transmission quality to different extents.

In the application requiring high transmission quality, the terminal device may allow the terminal device to use a second BWP having a bandwidth greater than that of the first BWP, so that the terminal device may switch to the BWP having a larger bandwidth in time when running the application, thereby ensuring real-time communication quality and improving user experience.

For example, assuming that a user is playing a game using a game application on the terminal device or watching a video online using a video application, the demand of the terminal device for transmission quality may be high, and the terminal device may switch to a BWP larger than the current bandwidth.

In the face of an application that does not require high transmission quality, the terminal device may allow the terminal device to use a third BWP having a bandwidth smaller than that of the first BWP, so that the terminal device may switch to a BWP having a smaller bandwidth when running the application, which may reduce power consumption of the terminal device.

For example, assuming that the user is watching novel using the reading software on the terminal device or watching video offline using the video application, the demand of the terminal device for transmission quality may be low, and the terminal device may switch to BWP that is smaller than the current bandwidth.

404. The terminal device transmits a BWP handover request message to the network device.

In the embodiment of the present invention, if the target application is an application that allows using the target BWP, the terminal device may send a BWP handover request message to the network device.

Wherein the BWP handover request message is used to request a handover to a target BWP from the network device.

Alternatively, if the target application is an application that allows use of a second BWP having a bandwidth greater than the first BWP, the terminal device may send a BWP switch request message to the network device, so that the terminal device may switch to the second BWP having a greater bandwidth.

Alternatively, if the target application is an application that is allowed to use a third BWP having a bandwidth smaller than the first BWP, the terminal device may send a BWP switch request message to the network device, so that the terminal device may switch to the third BWP having a smaller bandwidth.

Optionally, the terminal device may load the identifier of the target BWP in the MAC CE and/or Uplink Control Information (UCI), and send the identifier to the network device.

Optionally, if the target application running in the foreground in the terminal device is an application that allows using the target BWP, the terminal device sends the BWP handover request message to the network device, where the BWP handover request message may include:

a first alternative implementation: and if the target application running in the foreground in the terminal device is an application allowing to use the second BWP and the terminal device is configured with the second BWP in advance, the terminal device sends a BWP switching request message to the network device.

It should be noted that, the network device may configure a plurality of second BWPs to the terminal device first, and when the target application running in the foreground in the terminal device is an application that allows using the second BWP, the terminal device may acquire the second BWP that is configured in advance, and may send a BWP switch request message for switching to the second BWP to the network device.

Illustratively, it is assumed that the terminal device presets an application of the second BWP allowed to be used, and the method includes: the network device configures BWP1 and BWP2 to the terminal device in advance, wherein the bandwidth of BWP1 is 20M, and the bandwidth of BWP2 is 100M for the application 1, the application 2 and the application 3. The terminal device currently has the first BWP of 20M and is running application 1, where application 1 is an application of the second BWP allowed to be used, and then the terminal device may obtain the second BWP with the bandwidth larger than 20M, that is, the second BWP with the bandwidth of 100M. The terminal device may then request a switch to a second BWP with a bandwidth of 100M from the network device.

A second alternative implementation: and if the target application running in the foreground in the terminal device is an application allowing the use of the third BWP and the terminal device is configured with the third BWP in advance, the terminal device sends a BWP switching request message to the network device.

It should be noted that, the network device may configure a plurality of second BWPs to the terminal device first, and when the target application running in the foreground in the terminal device is an application that allows using the third BWP, the terminal device may acquire the preconfigured third BWP and may send a BWP switch request message for switching to the third BWP to the network device.

Illustratively, it is assumed that the terminal device has preset an application of the third BWP allowed to be used, and the application includes: the network device configures BWP1 and BWP2 to the terminal device in advance by using an application 4, an application 5 and an application 6, wherein the bandwidth of BWP1 is 20M, and the bandwidth of BWP2 is 100M. The terminal device currently has the first BWP of 100M and is running the application 4, where the application 4 is an application of the third BWP allowed to be used, and the terminal device may obtain the third BWP with the bandwidth less than 100M, that is, the third BWP with the bandwidth of 20M. The terminal device may then request a switch to a third BWP with a bandwidth of 20M from the network device.

A third alternative implementation: and if the target application running in the foreground in the terminal equipment is an application allowing to use the second BWP and the first duration is longer than the preset duration, the terminal equipment sends a BWP switching request message to the network equipment.

The first duration is the duration of the target application in foreground operation.

It should be noted that, when the target application running in the foreground in the terminal device is an application that allows using the second BWP, the terminal device may detect a duration time that the target application runs in the foreground, and when the first duration is longer than a preset duration, the terminal device may send a BWP switch request message for switching to the second BWP to the network device.

The preset duration may be set by the terminal device according to different requirements of the current scene on the transmission quality.

For example, assuming that the preset duration is 10s, the terminal device presets an application of the second BWP allowed to be used, including: the network device configures BWP1 and BWP2 to the terminal device in advance, wherein the bandwidth of BWP1 is 20M, and the bandwidth of BWP2 is 100M for the application 1, the application 2 and the application 3. Assuming that the terminal device currently has a first BWP of 20M, is running the application 1, the application 1 is an application of a second BWP allowed to be used, and the terminal device can detect that the application 1 is in the foreground and has been running for 12s, which is greater than 10s, then the terminal device can acquire the second BWP with a bandwidth greater than 20M, that is, the second BWP with a bandwidth of 100M. The terminal device may then request a switch to a second BWP with a bandwidth of 100M from the network device.

In this alternative implementation, the terminal device may request to switch to a second BWP having a bandwidth greater than that of the first BWP when the duration of the operation of the current application is greater than the preset duration, so that the data transmission quality of the terminal device may be improved.

Further, as shown in fig. 5, the terminal device may set a Timer, which may be denoted by BWPswitch Timer, when the first BWP operates. The terminal device may detect whether the target application currently running in the foreground is an application that allows the use of the second BWP, start a first timer from the current time if the first application currently running in the foreground is an application that allows the use of the second BWP, detect again whether the second application currently running in the foreground is an application that allows the use of the second BWP after the first timer expires, and send a BWP switch request message to the network device to switch to the second BWP if the second application currently running in the foreground is still an application that allows the use of the second BWP.

The first application and the first application may be the same application or different applications.

Optionally, the duration of the first timer may be:

(1) when configuring the BWP to the terminal device, the network device configures the BWP correspondingly to different BWPs, where each BWP corresponds to the duration of one first timer, and the durations of each first timer may be the same or different.

(2) The terminal equipment is set according to different requirements of different applications on data transmission quality. For example, for an application with high data transmission quality requirement, the duration of the first timer may be set to be shorter; for applications with low data transmission quality requirements, the duration of the first timer may be set longer.

(3) The terminal device is set according to the bandwidth of each BWP.

For example, assume that the duration of the first timer is 10 s. Assuming that the terminal device has preset the application of the second BWP allowed to be used, the method includes: the network device configures BWP1 and BWP2 to the terminal device in advance, wherein the bandwidth of BWP1 is 20M, and the bandwidth of BWP2 is 100M for the application 1, the application 2 and the application 3. The terminal device is currently running application 1 with the first BWP of 20M, and is running application 1 with the second BWP allowed to be used, then the first timer is started to count from this time, after 10s, the terminal device detects that application 2 is currently running and application 2 is also running application with the second BWP allowed to be used, and then the terminal device can acquire the second BWP with bandwidth greater than 20M, that is, BWP2 with bandwidth of 100M. The end device may then send a BWP switch request message to the network device to switch to BWP2 with bandwidth 100M.

In this alternative implementation, the terminal device may detect whether the current application is an application that allows the second BWP to be used, if so, use a timer to count time, and after the timer expires, detect again whether the current application is an application that allows the second BWP to be used, if so, request a switch to the second BWP with a larger bandwidth, which may improve data transmission quality of the terminal device and more accurately switch the BWP according to the requirement of the current application for the data transmission rate.

A fourth alternative implementation: and if the target application running in the foreground in the terminal device is an application allowing the use of the third BWP and the first duration is longer than the preset duration, the terminal device sends a BWP switching request message to the network device.

It should be noted that, when the target application running in the foreground in the terminal device is an application that allows the third BWP to be used, the terminal device may detect a duration of the target application running in the foreground, and when the first duration is longer than a preset duration, the terminal device may send a BWP switch request message for switching to the third BWP to the network device.

The preset duration may be adjusted and set by the terminal device according to different requirements of the current scene on the transmission quality.

For example, assuming that the preset duration is 10s, the terminal device presets an application of the third BWP allowed to be used, including: the network device configures BWP1 and BWP2 to the terminal device in advance by using an application 4, an application 5 and an application 6, wherein the bandwidth of BWP1 is 20M, and the bandwidth of BWP2 is 100M. Assuming that the terminal device currently has the first BWP of 100M, is running the application 4, the application 4 is an application of the third BWP allowed to be used, and the terminal device can detect that the application 4 is in the foreground and has been running for 12s, which is greater than 10s, then the terminal device can acquire the third BWP with the bandwidth less than 100M, i.e. the third BWP with the bandwidth of 20M. The terminal device may then request a switch to a third BWP with a bandwidth of 20M from the network device.

In this alternative implementation, the terminal device may request to switch to a third BWP with a bandwidth smaller than the first BWP when the current application runs for a duration longer than a preset duration, so as to reduce power consumption of the terminal device.

Further, as shown in fig. 5, the terminal device may set a Timer, which may be denoted by BWPswitch Timer, when the first BWP operates. The terminal device may detect whether the target application currently running in the foreground is an application that allows the third BWP to be used, start a second timer from the current time if the first application currently running in the foreground is an application that allows the third BWP to be used, detect again whether the third application currently running in the foreground is an application that allows the third BWP to be used after the second timer expires, and send a BWP switch request message to the network device to switch to the third BWP if the third application currently running in the foreground is still an application that allows the third BWP to be used.

The first application and the third application may be the same application or different applications.

Optionally, the duration of the first timer may be:

(3) The terminal device is set according to the bandwidth of each BWP.

For example, assume that the duration of the second timer is 8 s. Assuming that the terminal device is preset with an application that allows the use of the third BWP, the method includes: the network device configures BWP1 and BWP2 to the terminal device in advance by using an application 4, an application 5 and an application 6, wherein the bandwidth of BWP1 is 20M, and the bandwidth of BWP2 is 100M. The terminal device is currently running an application 4 with a first BWP of 100M, the application 4 is an application of a third BWP allowed to be used, then the second timer is started to count from this point on, after 8s, the terminal device again detects that an application 5 is currently running and the application 5 is also an application of a third BWP allowed to be used, and the terminal device can acquire a third BWP with a bandwidth of less than 100M, that is, a BWP1 with a bandwidth of 20M. The end device may then send a BWP switch request message to the network device to switch to BWP1 with the bandwidth of 20M. In this alternative implementation, the terminal device may detect whether the current application is an application that allows the third BWP to be used, if so, use a timer to count time, and after the timer expires, detect again whether the current application is an application that allows the third BWP to be used, and if so, request a switch to the third BWP with a smaller bandwidth, which may reduce power consumption of the terminal device and more accurately switch the BWP according to the requirements of the current application for the data transmission rate.

A fifth alternative implementation: if the target application running in the foreground in the terminal device is an application allowing to use the second BWP, and the terminal device is pre-configured with a fourth BWP with M bandwidth larger than that of the first BWP, detecting historical signal-to-noise ratios SINR of the M fourth BWPs; selects a second BWP from the M fourth BWPs and sends a BWP handover request message to the network device.

Wherein, the second BWP is the BWP with the largest historical SINR among the M fourth BWPs.

In the embodiment of the present invention, the Signal to Interference plus Noise Ratio (SINR) is a Signal to Interference plus Noise Ratio, i.e., a Ratio of the received strength of a useful Signal to the received strength of an Interference Signal (Noise and Interference); this can be simply understood as "signal-to-noise ratio".

The SINR is often applied to an interference cancellation technique, and data with a large SINR (layered) may be decoded first, and then decoded data is subtracted (cancelled) during decoding later, and so on until all data are decoded. In this technique, SINR is an important parameter.

Currently, the conventional expression of SINR is: SINR is Signal/(Interference + Noise).

Where Signal is the measured power of the useful Signal, the signals and channels of primary interest include: RS, PDSCH; the Interference is the measured power of the signal or the channel Interference signal, including the Interference of other cells of the system and the Interference of different systems: noise is Noise, which is related to the specific measurement bandwidth and the receiver Noise figure.

It should be noted that, when the target application running in the foreground in the terminal device is an application that allows the second BWP to be used, the terminal device may detect the historical SINRs of M preconfigured bandwidths that are greater than the fourth BWP of the first BWP, and determine the BWP with the largest historical SINR among the M fourth BWPs as the second BWP, and then the terminal device may send a BWP switch request message for switching to the second BWP to the network device.

Illustratively, it is assumed that the terminal device presets an application of the second BWP allowed to be used, and the method includes: the network device configures BWP1, BWP2 and BWP3 to the terminal device in advance by using application 1, application 2 and application 3, wherein the bandwidth of BWP1 is 20M, the historical SINR is-2 dB, the bandwidth of BWP2 is 45M, the historical SINR is 0dB, the bandwidth of BWP3 is 80M, and the historical SINR is 4 dB. The terminal device currently has the first BWP of 15M and is running application 1, which is an application of the second BWP that is allowed to be used, then the terminal device may obtain the historical SINR of the preconfigured BWP1, BWP2, BWP3 and may determine BWP3 with the historical SINR of 4dB as the second BWP, and then the terminal device may request the network device to switch to the second BWP with the historical SINR of 4 dB.

In this alternative implementation, the terminal device may select, as the second BWP, a BWP with the largest historical SINR among a plurality of fourth BWPs with bandwidths greater than the first BWP, and request the network device to switch to the second BWP, so that the terminal device may switch to the BWP with the bandwidth greater than the first BWP and the largest historical SINR, which may improve data transmission quality of the terminal device and stabilize signals. A sixth alternative implementation: if the target application running in the foreground in the terminal device is an application allowing the use of the third BWP and the terminal device is pre-configured with a fifth BWP with N bandwidths smaller than the first BWP, detecting historical signal-to-noise ratios SINR of the N fifth BWPs; and selecting a third BWP from the N fifth BWPs, and transmitting a BWP handoff request message to the network device.

Wherein, the third BWP is the BWP with the largest historical SINR among the N fifth BWPs.

It should be noted that, when the target application running in the foreground in the terminal device is an application that allows the use of the third BWP, the terminal device may detect that the preconfigured N bandwidths are smaller than the historical SINR of the fifth BWP of the first BWP, and determine the BWP with the largest historical SINR among the N fifth BWPs as the third BWP, and then the terminal device may send a BWP switch request message for switching to the third BWP to the network device.

Illustratively, it is assumed that the terminal device has preset an application of the third BWP allowed to be used, and the application includes: the network device configures BWP1, BWP2 and BWP3 to the terminal device in advance by using application 4, application 5 and application 6, wherein the bandwidth of BWP1 is 20M, the historical SINR is-2 dB, the bandwidth of BWP2 is 45M, the historical SINR is 0dB, the bandwidth of BWP3 is 80M, and the historical SINR is 4 dB. The terminal device currently has the first BWP of 100M and is running an application 4, which application 4 is an application of the third BWP that is allowed to be used, then the terminal device may obtain the historical SINR of the preconfigured BWPs 1, BWP2, BWP3 and may determine BWP3 having the historical SINR of 4dB as the third BWP, and then the terminal device may request the network device to switch to the third BWP having the historical SINR of 4 dB.

In this alternative implementation, the terminal device may select, as the third BWP, a BWP with the largest historical SINR among a plurality of fifth BWPs with bandwidths smaller than the first BWP, and request the network device to switch to the third BWP, so that the terminal device may switch to the BWP with the bandwidth smaller than the first BWP and the largest historical SINR, which may reduce power consumption of the terminal device and stabilize signals.

A seventh alternative implementation: if the target application running in the foreground in the terminal device is an application allowing to use the second BWP and the terminal device is pre-configured with a sixth BWP with P bandwidth larger than that of the first BWP, detecting the priority of P sixth BWPs; selects a second BWP from the P sixth BWPs and sends a BWP handover request message to the network device.

Wherein, the second BWP is the highest BWP of the P sixth BWPs.

Optionally, the priority of the sixth BWP may be:

(1) when configuring BWPs to a terminal device, a network device configures BWPs corresponding to different BWPs, where each BWP corresponds to a priority, and the priorities of the BWPs may be the same or different.

(2) The terminal device is set according to the bandwidth of each BWP.

(3) The terminal device is set according to the SINR of each BWP.

It should be noted that, when the target application running in the foreground in the terminal device is an application that allows the second BWP, the terminal device may detect the priority of the sixth BWP with the preconfigured P bandwidth being greater than the first BWP, and determine the BWP with the highest priority among the P sixth BWPs as the second BWP, and then the terminal device may send a BWP switch request message for switching to the second BWP to the network device.

Illustratively, it is assumed that the terminal device presets an application of the second BWP allowed to be used, and the method includes: the method comprises the steps that an application 1, an application 2 and an application 3 are adopted, and a network device configures BWP1, BWP2 and BWP3 to a terminal device in advance, wherein the bandwidth of BWP1 is 20M, the priority is 1 level, the bandwidth of BWP2 is 45M, the priority is 2 level, the bandwidth of BWP3 is 100M, and the priority is 3 level. The terminal device currently has the first BWP of 15M and is running application 1, which is an application of the second BWP that is allowed to be used, the terminal device may acquire the priorities of the preconfigured BWPs 1, BWPs 2, BWPs 3 and may determine BWP3 having the priority of 3 as the second BWP, and then the terminal device may request the network device to switch to the second BWP having the priority of 3.

In this alternative implementation, the terminal device may select, as the second BWP, a BWP with the highest priority from among a plurality of sixth BWPs with bandwidths greater than the first BWP, and request the network device to switch to the second BWP, and the terminal device may switch to the BWP with the bandwidth greater than the first BWP and the highest priority, so as to select the most applicable BWP and improve the data transmission quality of the terminal device. An eighth optional implementation: if the target application running in the foreground in the terminal device is an application allowing the use of the third BWP and the terminal device is pre-configured with a seventh BWP with Q bandwidth smaller than the first BWP, detecting the priority of Q seventh BWPs; selects a third BWP from the Q seventh BWPs and sends a BWP switch request message to the network device.

Wherein, the third BWP is the highest BWP of the Q seventh BWPs.

Optionally, the priority of the seventh BWP may be:

(2) The terminal device is set according to the bandwidth of each BWP.

(3) The terminal device is set according to the SINR of each BWP.

It should be noted that, when the target application running in the foreground in the terminal device is an application that allows the third BWP, the terminal device may detect the priority of the preconfigured Q bandwidth that is smaller than the seventh BWP of the first BWP, and determine the highest priority BWP of the Q seventh BWPs as the third BWP, and then the terminal device may send a BWP switch request message for switching to the third BWP to the network device.

Illustratively, it is assumed that the terminal device has preset an application of the third BWP allowed to be used, and the application includes: the network device configures BWP1, BWP2 and BWP3 to the terminal device in advance, wherein the bandwidth of BWP1 is 20M, the priority is 1 level, the bandwidth of BWP2 is 45M, the priority is 2 level, the bandwidth of BWP3 is 100M, and the priority is 3 level. The terminal device currently has the first BWP of 100M and is running an application 4, which application 4 is an application of the third BWP that is allowed to be used, the terminal device may acquire the priorities of the preconfigured BWPs 1, BWPs 2, BWPs 3 and may determine BWP3 having the priority of 3 as the third BWP, and then the terminal device may request the network device to switch to the third BWP having the priority of 3.

In this alternative implementation, the terminal device may select a highest-priority BWP among a plurality of seventh BWPs having bandwidths smaller than the first BWP as a third BWP, and request a network device to switch to the third BWP, so that the terminal device may switch to the BWP having a bandwidth smaller than the first BWP and the highest priority, may select the most applicable BWP, and reduce power consumption of the terminal device.

405. The terminal device receives the BWP switching indication message sent by the network device.

Wherein, the BWP handover indication message may be an RRC reconfiguration message or a DCI.

406. The terminal device switches from the first BWP to the target BWP.

When the terminal device works in the first partial bandwidth BWP, the terminal device may detect whether a target application currently running in a foreground is an application that allows using the target BWP, and if so, the terminal device may send a BWP handover request message to the network device; the BWP handover request message is used to request the network device to handover to a target BWP, where the target BWP is a second BWP with a bandwidth greater than the first BWP or a third BWP with a bandwidth less than the first BWP. With this scheme, the terminal device may transmit a BWP handover request message for requesting handover to the target BWP to the network device upon determining that the currently running target application is an application that is allowed to use the target BWP, so that the terminal device may handover to the target BWP that is more suitable for the application that the terminal device is running, and thus may reduce power consumption of the terminal device or increase a data transmission rate.

Further, after the terminal device switches from the first BWP to the target BWP, the terminal device may further continue to execute steps 402-406 in the embodiment of the method; that is, when the target application running in the foreground in the terminal device is an application that allows using the target BWP, the BWP handover request message for handing over to the target BWP may be continuously sent to the network device.

As shown in fig. 6, an embodiment of the present invention provides a terminal device, where the terminal device includes:

a processing module 601, configured to operate at a first fractional bandwidth BWP;

a transceiver module 602, configured to send a BWP handover request message to a network device if a target application running in a foreground in a terminal device is an application that allows using a target BWP;

the BWP handover request message is used to request the network device to handover to a target BWP, where the target BWP is a second BWP with a bandwidth greater than the first BWP, or the target BWP is a third BWP with a bandwidth less than the first BWP.

Optionally, the transceiver module 602 is specifically configured to send a BWP handover request message to the network device if the target application is an application that allows using the target BWP and the terminal device is preconfigured with the target BWP.

Optionally, the transceiver module 602 is specifically configured to send a BWP handover request message to the network device if the target application is an application that allows using the target BWP and the first duration is greater than the preset duration;

Optionally, the transceiver module 602 is specifically configured to send a BWP handover request message to the network device if the target application is an application that allows using the second BWP and the first duration is greater than the preset duration.

Optionally, the transceiver module 602 is specifically configured to send a BWP handover request message to the network device if the target application is an application that allows using the third BWP and the first duration is greater than the preset duration.

Optionally, the processing module 601 is specifically configured to detect historical signal-to-noise ratios SINR of M fourth BWPs if the target application is an application that allows the second BWP to be used and the terminal device is preconfigured with a fourth BWP with M bandwidths greater than that of the first BWP;

a transceiver module 602, configured to specifically select a second BWP from the M fourth BWPs, and send a BWP handover request message to the network device;

Optionally, the transceiver module 602 is specifically configured to load the identifier of the target BWP in a MAC CE and/or uplink control information UCI, and send the identifier to the network device.

As shown in fig. 7, an embodiment of the present invention further provides a terminal device, where the terminal device may include a processor 701, a memory 702, and a computer program stored in the memory 702 and capable of running on the processor 701, and when the computer program is executed by the processor, the computer program may implement each process executed by the terminal device in the foregoing method embodiments, and may achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

Fig. 8 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present invention. The terminal device may include: radio Frequency (RF) circuitry 810, memory 820, input unit 830, display unit 840, sensor 850, audio circuitry 860, wireless fidelity (WiFi) module 870, processor 880, and power supply 890. Radio frequency circuit 810 includes, among other things, a receiver 811 and a transmitter 812. Those skilled in the art will appreciate that the handset configuration shown in fig. 8 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The RF circuit 810 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, for processing downlink information of a base station after receiving the downlink information to the processor 880; in addition, the data for designing uplink is transmitted to the base station. In general, RF circuit 810 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 810 may also communicate with networks and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to global system for mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Message Service (SMS), etc.

The memory 820 may be used to store software programs and modules, and the processor 880 executes various functional applications and data processing of the cellular phone by operating the software programs and modules stored in the memory 820. The memory 820 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 820 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 830 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 830 may include a touch panel 831 and other input devices 832. The touch panel 831, also referred to as a touch screen, can collect touch operations performed by a user on or near the touch panel 831 (e.g., operations performed by the user on the touch panel 831 or near the touch panel 831 using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 831 may include two portions, i.e., a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts it to touch point coordinates, and sends the touch point coordinates to the processor 880, and can receive and execute commands from the processor 880. In addition, the touch panel 831 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 830 may include other input devices 832 in addition to the touch panel 831. In particular, other input devices 832 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 840 may be used to display information input by the user or information provided to the user and various menus of the cellular phone. The display unit 840 may include a display panel 841, and the display panel 841 may be configured in the form of a Liquid Crystal Display (LCD), an organic light-Emitting diode (OLED), or the like, as an option. Further, touch panel 831 can overlay display panel 841, and when touch panel 831 detects a touch operation thereon or nearby, communicate to processor 880 to determine the type of touch event, and processor 880 can then provide a corresponding visual output on display panel 841 based on the type of touch event. Although in fig. 8, the touch panel 831 and the display panel 841 are two separate components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 831 and the display panel 841 may be integrated to implement the input and output functions of the mobile phone.

The terminal device may also include at least one sensor 850, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 841 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 841 and/or the backlight when the mobile phone is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

Audio circuitry 860, speaker 861, microphone 862 may provide an audio interface between the user and the handset. The audio circuit 860 can transmit the electrical signal converted from the received audio data to the speaker 861, and the electrical signal is converted into a sound signal by the speaker 861 and output; on the other hand, the microphone 862 converts collected sound signals into electrical signals, which are received by the audio circuit 860 and converted into audio data, which are then processed by the audio data output processor 880 and transmitted to, for example, another cellular phone via the RF circuit 810, or output to the memory 820 for further processing.

WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to send and receive e-mails, browse webpages, access streaming media and the like through the WiFi module 870, and provides wireless broadband Internet access for the user. Although fig. 8 shows WiFi module 870, it is understood that it does not belong to the essential constitution of the handset, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 880 is a control center of the mobile phone, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 820 and calling data stored in the memory 820, thereby integrally monitoring the mobile phone. Optionally, processor 880 may include one or more processing units; preferably, the processor 880 may integrate an application processor, which mainly handles operating systems, user interfaces, applications, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 880.

The handset also includes a power supply 890 (e.g., a battery) for powering the various components, which may preferably be logically coupled to the processor 880 via a power management system to manage charging, discharging, and power consumption. Although not shown, the mobile phone may further include a camera, a bluetooth module, etc., which are not described herein.

In this embodiment of the present invention, the processor 880 is configured to operate in the first fractional bandwidth BWP;

an RF circuit 810, configured to send a BWP handover request message to a network device if a target application running in the foreground in the terminal device is an application that allows use of a target BWP;

Optionally, the RF circuit 810 is specifically configured to send a BWP handover request message to the network device if the target application is an application that allows using the target BWP and the terminal device is preconfigured with the target BWP.

Optionally, the RF circuit 810 is specifically configured to send a BWP handover request message to the network device if the target application is an application that allows using the target BWP and the first duration is greater than the preset duration;

Optionally, the RF circuit 810 is specifically configured to send a BWP handover request message to the network device if the target application is an application that is allowed to use the second BWP and the first duration is greater than the preset duration.

Optionally, the RF circuit 810 is specifically configured to send a BWP handover request message to the network device if the target application is an application that is allowed to use the third BWP and the first duration is greater than the preset duration.

Optionally, the processor 880 is specifically configured to detect historical signal-to-noise ratios SINR of M fourth BWPs if the target application is an application that allows using the second BWP and the terminal device is preconfigured with a fourth BWP having an M bandwidth greater than that of the first BWP;

the RF circuit 810 is specifically configured to select a second BWP from the M fourth BWPs, and send a BWP handover request message to the network device;

Optionally, the RF circuit 810 is specifically configured to load the identifier of the target BWP in a MAC CE and/or uplink control information UCI, and send the identifier to the network device.

An embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process executed by a terminal device in the foregoing method embodiments, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for switching BWP, applied to a terminal device, the method comprising:

operating at a first fractional bandwidth BWP;

2. The method according to claim 1, wherein the sending a BWP handover request message to a network device if the target application running in foreground in the terminal device is an application that is allowed to use the target BWP comprises:

and if the target application is an application allowing the use of the target BWP and the terminal device is configured with the target BWP in advance, sending the BWP switching request message to the network device.

3. The method according to claim 1, wherein the sending a BWP handover request message to a network device if the target application running in foreground in the terminal device is an application that is allowed to use the target BWP comprises:

if the target application is an application allowing the use of the target BWP and the first duration is longer than the preset duration, sending the BWP switching request message to the network equipment;

4. The method according to claim 3, wherein if the target application is an application that is allowed to use the target BWP and the first duration is longer than a preset duration, sending the BWP handoff request message to the network device, comprising:

and if the target application is an application allowing to use a second BWP and the first duration is longer than the preset duration, sending the BWP handover request message to the network device.

5. The method according to claim 3, wherein if the target application is an application that is allowed to use the target BWP and the first duration is longer than a preset duration, sending the BWP handoff request message to the network device, comprising:

and if the target application is an application allowing to use a third BWP and the first duration is longer than the preset duration, sending the BWP handover request message to the network device.

6. The method according to claim 1, wherein the sending a BWP handover request message to a network device if the target application running in foreground in the terminal device is an application that is allowed to use the target BWP comprises:

if the target application is an application allowing to use a second BWP and the terminal device is pre-configured with a fourth BWP with M bandwidth larger than that of the first BWP, detecting historical signal-to-noise ratios SINRs of the M fourth BWPs;

selecting the second BWP from the M fourth BWPs and sending the BWP handover request message to the network device;

wherein the second BWP is the BWP with the largest historical SINR among the M fourth BWPs.

7. The method of claim 1, wherein sending the BWP handover request message to the network device comprises:

and carrying the identification of the target BWP in a media access control unit (MAC CE) and/or Uplink Control Information (UCI) and sending the identification to the network equipment.

8. A terminal device, comprising:

a processing module configured to operate at a first fractional bandwidth BWP;

a transceiver module, configured to send a BWP handover request message to a network device if a target application running in a foreground in the terminal device is an application that allows using a target BWP;

9. A terminal device, comprising: processor, memory and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, implements a method of switching BWP according to any one of claims 1 to 7.

10. A computer-readable storage medium, comprising: the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the method of switching BWP according to any one of claims 1 to 7.