CN112996111B

CN112996111B - BWP switching method and device

Info

Publication number: CN112996111B
Application number: CN202110141554.3A
Authority: CN
Inventors: 孙晨晔
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2023-04-18
Anticipated expiration: 2041-02-02
Also published as: CN112996111A

Abstract

The present embodiment provides a BWP handover method and device, in which a UE determines a target BWP to be handed over according to channel quality information corresponding to each BWP and a current traffic volume of the UE, and then sends a BWP handover request message to a network device to request the network device to handover the UE to the target BWP, and when the UE receives a BWP handover command sent by the network device, the UE can switch to the target BWP according to the BWP handover command. That is, in the embodiment of the present application, the UE may actively select the BWPs to be switched and report the BWPs to the network device according to the channel quality corresponding to each BWP and the traffic volume of the UE, so that the network device may flexibly configure the BWPs for the UE according to the actual requirements of the UE, thereby effectively improving the resource utilization and better coping with the diversified application scenarios of the UE.

Description

BWP switching method and device

Technical Field

The embodiment of the present application relates to the field of communications technologies, and in particular, to a method and an apparatus for switching a partial Bandwidth (BWP).

Background

In the research process of a New Radio (NR) system of the fifth Generation mobile communication technology (5 th-Generation, abbreviated as 5G), for some User Equipments (UEs), due to limited capability, all system bandwidth cannot be supported, and in order to improve scheduling efficiency, a BWP concept is introduced into the NR system of the fifth Generation.

In the prior art, in a Radio Resource Control (RRC) connection state, a network device may configure one or more BWPs for a UE, and then send related handover information to the UE, where the UE switches to the corresponding BWPs according to the received handover information.

However, the BWP switching mechanism in the prior art is not flexible enough in the switching manner of bandwidth resources, and may cause a phenomenon that the BWP configured by the network device is not adapted to the channel quality or working state of the UE, which results in a low resource utilization rate and cannot cope with diversified application scenarios of the UE.

Disclosure of Invention

The embodiments of the present application provide a BWP handover method and apparatus, which can solve the technical problems in the prior art that a BWP handover mechanism has a low resource utilization rate and cannot cope with diverse application scenarios of UEs.

In a first aspect, an embodiment of the present application provides a BWP handover method, which is applied to a UE, and includes:

measuring channel quality information corresponding to each BWP configured for the UE, and determining a target BWP corresponding to the UE according to the channel quality information corresponding to each BWP and the current traffic of the UE;

sending a BWP handover request message to a network device, wherein the BWP handover request message comprises the identification information of the target BWP;

and receiving a BWP switching instruction sent by the network equipment, and switching to the target BWP according to the BWP switching instruction.

In a possible design, the measuring channel quality information corresponding to each fractional bandwidth BWP configured by the UE includes:

and determining Channel quality Information corresponding to each BWP based on a Channel State Information Reference Signal (CSI-RS) of the serving cell where the UE is located.

In a possible design, the determining a target BWP corresponding to the UE according to the channel quality information corresponding to each BWP and the current traffic volume of the UE includes:

determining candidate BWPs of which the channel quality is greater than a preset quality threshold in each BWP according to the channel quality information corresponding to each BWP;

and determining the target BWP in each candidate BWP according to the bandwidth corresponding to each candidate BWP and the current traffic of the UE.

In a possible design, the determining the target BWP in each candidate BWP according to the bandwidth corresponding to each candidate BWP and the current traffic of the UE includes:

determining the minimum bandwidth of BWP currently required by the UE according to the current traffic of the UE;

and determining the candidate BWP with bandwidth larger than the minimum bandwidth and the smallest difference with the minimum bandwidth in each candidate BWP as the target BWP.

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

receiving a BWP handover request message sent by a UE, where the BWP handover request message includes identification information of a target BWP, and the target BWP is one of multiple BWPs configured by the UE;

sending a BWP handover instruction to the UE according to the identification information of the target BWP, wherein the BWP handover instruction is used for instructing the UE to handover to the target BWP.

In one possible design, the sending the BWP handover command to the UE includes:

and sending a Radio Resource Control (RRC) message or Downlink Control Information (DCI) to the UE, wherein the RRC message or the DCI comprises the BWP switching instruction.

In a third aspect, an embodiment of the present application provides a BWP handover apparatus, which is applied to a UE, and the apparatus includes:

a measurement module, configured to measure channel quality information corresponding to each BWP configured for the UE, and determine a target BWP corresponding to the UE according to the channel quality information corresponding to each BWP and a current traffic volume of the UE;

a sending module, configured to send a BWP handover request message to a network device, where the BWP handover request message includes identification information of the target BWP;

and the control module is used for receiving the BWP switching instruction sent by the network equipment and switching to the target BWP according to the BWP switching instruction.

In a fourth aspect, an embodiment of the present application provides a BWP switching apparatus, where the apparatus is applied to a network device, and the apparatus includes:

a receiving module, configured to receive a BWP handover request message sent by a UE, where the BWP handover request message includes identification information of a target BWP, and the target BWP is one of multiple BWPs configured for the UE;

a control module, configured to send a BWP handover instruction to the UE according to the identification information of the target BWP, where the BWP handover instruction is used to instruct the UE to handover to the target BWP.

In a fifth aspect, an embodiment of the present application provides a user equipment, including: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of switching BWP as provided by the first aspect.

In a sixth aspect, an embodiment of the present application provides a network device, including: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of switching BWPs as provided in the second aspect.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer-executable instruction is stored, and when a processor executes the computer-executable instruction, the method for switching the BWP according to the first aspect is implemented;

alternatively, the switching method of BWP as provided in the second aspect is implemented when the processor executes the computer-executable instructions.

In an eighth 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 computer program implements the BWP switching method provided in the first aspect, or implements the BWP switching method provided in the second aspect.

According to the BWP switching method provided in the embodiment of the present application, the UE determines a target BWP to be switched according to the channel quality information corresponding to each BWP and the current traffic of the UE, and then sends a BWP switching request message to the network device to request the network device to switch the UE to the target BWP, and when the UE receives a BWP switching instruction sent by the network device, the UE can switch to the target BWP according to the BWP switching instruction. That is, in the embodiment of the present application, the UE may actively select the BWPs to be switched and report the BWPs to the network device according to the channel quality corresponding to each BWP and the traffic volume of the UE, so that the network device may flexibly configure the BWPs for the UE according to the actual requirements of the UE, thereby effectively improving the resource utilization and better coping with the diversified application scenarios of the UE.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present application or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive exercise.

Fig. 1 is a block diagram of a wireless communication system according to an embodiment of the present application;

fig. 2 is a schematic diagram of adaptively adjusting a bandwidth of a UE provided in an embodiment of the present application;

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

fig. 4 is a flowchart illustrating another BWP handover method provided in this embodiment of the present application;

fig. 5 is a schematic signaling interaction diagram of a BWP handover method provided in an embodiment of the present application;

fig. 6 is a schematic diagram illustrating program modules of a BWP switching apparatus according to an embodiment of the present application;

FIG. 7 is a block diagram of another exemplary embodiment of a BWP switching apparatus;

fig. 8 is a schematic hardware structure diagram of an electronic device provided in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments 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 drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. 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.

The embodiment of the application can be applied to various communication systems, such as: code Division Multiple Access (CDMA) System, wideband Code Division Multiple Access (WCDMA) System, general Packet Radio Service (GPRS), advanced long term evolution (LTE-a) System, new Radio (NR) System, evolution System of NR System, LTE-based Access to unlicensed spectrum (LTE-U) System, NR-based Access to unlicensed spectrum (NR-U) System, universal Mobile Telecommunications System (UMTS), wireless Local Area network (Area network, WLAN), wireless Fidelity (WiFi), or other next generation communication systems.

Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technologies, mobile Communication systems will support not only conventional Communication, but also, for example, device to Device (D2D) Communication, machine to Machine (M2M) Communication, machine Type Communication (MTC), and Vehicle to Vehicle (V2V) Communication, etc., and the embodiments of the present application can also be applied to these Communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.

The frequency spectrum of the application is not limited in the embodiment of the present application. For example, the embodiments of the present application may be applied to a licensed spectrum and may also be applied to an unlicensed spectrum.

Referring to fig. 1, fig. 1 is a schematic diagram of an architecture of a wireless communication system according to an embodiment of the present disclosure. The wireless communication system provided by the present embodiment includes a UE101 and a network device 102.

Alternatively, the UE101 may refer to various forms of user equipment, access terminal, subscriber unit, subscriber station, mobile Station (MS), remote station, remote terminal, mobile device, terminal device (terminal equipment), wireless communication device, user agent, or user device. The UE may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network, or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment of the application as long as the UE101 can wirelessly communicate with the Network device 102.

Optionally, the Network device 102, that is, a public mobile communication Network device, is an interface device for the UE101 to Access the internet, and is also a form of a Radio Station, and refers to a Radio transceiver Station for performing information transmission with the UE101 in a certain Radio coverage area, and includes a Base Station (BS), which may also be referred to as a Base Station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing a Base Station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a Base Station function in a 3G network includes a node B (NodeB), a device providing a Base Station function in a 4G network includes an Evolved node B (eNB), and in a Wireless Local Area Network (WLAN), the device providing a Base Station function is an Access Point (AP), a device providing a Base Station function in a 5G NR, a gNB (ng-eNB) that continues to evolve, where the gNB and the UE communicate with each other by using an NR technology, and the ng-eNB and the UE communicate with each other by using an Evolved Universal Terrestrial Radio Access network (E-eNB) technology, and both the gNB and the ng-eNB may be connected to the 5G core network. The network device 102 in the embodiment of the present application also includes a device that provides a base station function in a future new communication system, and the like.

It can be appreciated that BWP is a subset bandwidth of the total bandwidth of the serving cell that flexibly adjusts the UE reception and transmission bandwidth size through bandwidth adaptation in NR such that the UE reception and transmission bandwidth need not be as large as the bandwidth of the cell, e.g.: (1) When the UE is in a low activity period, the gNB may instruct the UE to reduce its Bandwidth (BWP) through higher layer signaling or DCI, which may save the power of the UE; (2) The gNB indicates that the position of BWP can move in the frequency domain, thus increasing the scheduling flexibility; (3) The gNB may instruct the UE to change the subcarrier spacing, and thus may allow different services.

Each BWP is formed by a segment of continuous Physical Resource Block (PRB), and the corresponding bandwidth, frequency domain starting position, sub-Channel Spacing (SCS) and Cyclic Prefix (CP) length can be flexibly configured. The standard defines that BWP has a distinction between uplink and downlink, and uplink/downlink can be configured with different parameters according to requirements. BWPs can be broadly classified into two categories, depending on the applicable scenarios: one is initial activation BWP, used for UE initial access phase and UE in RRC idle state; the other is BWP configured in RRC connected state for the UE to be in RRC connected state. The UE obtains related Information of an uplink/downlink initial activation BWP by reading Remaining Minimum System Information (RMSI) of the cell, where the downlink initial activation BWP is used to transmit System Information Block (SIB) Information, paging message, and randomly accessed Msg2/4, etc.; the uplink initial activation BWP is used to transmit uplink information for random access.

The network device may configure different BWPs for different UEs (at most, four uplink/Downlink BWPs are configured for each UE), the related configuration information of the BWPs is notified to the UE through an RRC signaling sent by the network, although the network may configure multiple BWPs for each UE, the 3GPP Rel-15 protocol specifies that uplink/Downlink can only be respectively activated by 1 BWP at the same time, and the UE no longer receives a PDSCH (Physical Downlink Shared Channel), a PDCCH (Physical Downlink Control Channel), or a CSI-RS outside the activated Downlink BWPs; outside the active Uplink BWP, the UE does not transmit PUCCH (Physical Uplink Control Channel) and PUSCH (Physical Uplink Shared Channel). In the connected state, if the UE configures a plurality of BWPs, the UE performs BWP handover by parsing DCI indication in the PDCCH or by expiration of a BWP deactivation Timer (BWP-Inactivity Timer). A deactivation timer is used to switch the currently active BWP to the default BWP, which will be restarted upon successful reception of the PDCCH on the active BWP and the UE will switch to the default BWP if the timer expires.

For better understanding of the embodiment of the present application, referring to fig. 2, fig. 2 is a schematic diagram of adaptively adjusting a bandwidth of a UE provided in the embodiment of the present application.

In fig. 2, at the first time, the traffic of the UE is large, and the network device configures a large bandwidth (BWP 1) for the UE; at the second moment, the traffic of the UE is small, and the network device configures a small bandwidth (BWP 2) for the UE to meet the basic communication requirement; at the third time, the network device finds that there is wide frequency selective fading in the bandwidth of BWP1, or there is a shortage of resources in the frequency range of BWP1, and then configures a new bandwidth (BWP 3) for the UE.

In the existing BWP related mechanism of 5G NR, for initial access BWP and RRC connected BWP, both related configuration information and activation/deactivation procedures are decided and indicated to the UE by the network device, including: bandwidth, frequency domain starting position, SCS, CP length, deactivation timer duration, default BWP, and connected state activated BWP for each uplink/downlink BWP, etc. Although the 3GPP specification defines that the network can flexibly configure different BWPs for each UE, such configuration flexibility may increase the complexity of base station processing and scheduling for the network, so that the network may configure BWPs only for specific users (e.g., small bandwidth terminals or industry-specific terminals) individually, and adopt the same BWP configuration for a large number of general users in the network. This makes it highly likely that the BWP of the network configuration/activation does not match the actual channel quality or UE status, etc.

For example, after the UE enters the RRC connection state, the network first needs to send a corresponding BWP configuration set to the UE through an RRC reconfiguration message, where the set includes 1-4 BWPs configured for uplink/downlink of the UE, and may activate one of the BWPs; in the following data transmission scheduling process, the BWP switching may be performed through DCI signaling, that is, other BWPs in the set are activated while the current BWP is deactivated by default. As the wireless UE moves, the channel state of the UE is changing, and channel change conditions such as frequency selective fading may cause that BWP configured and activated by the network is not matched with the channel state of the UE, thereby affecting demodulation performance and user experience of uplink/downlink data of the UE.

In order to solve the above technical problem, an embodiment of the present application provides a BWP switching method, where a UE may perform channel estimation through a CSI-RS to evaluate channel quality, and then actively select a BWP to be switched according to the channel quality corresponding to each BWP and its own traffic volume, and report the BWP to a network device, so that the network device may flexibly configure a BWP for the UE according to actual requirements of the UE, thereby effectively improving resource utilization and downlink data transmission performance, and better coping with diversified application scenarios of the UE. Please refer to the following embodiments of the present application:

referring to fig. 3, fig. 3 is a flowchart illustrating a BWP handover method according to an embodiment of the present invention, where an execution subject of the embodiment is a UE in the embodiment shown in fig. 1. As shown in fig. 3, the method includes:

s301, measuring channel quality information corresponding to each BWP configured for the UE, and determining a target BWP corresponding to the UE according to the channel quality information corresponding to each BWP and the current traffic of the UE.

In a possible embodiment of the present application, the network device may configure one UE with multiple BWPs, and the network device may configure the UE to measure the multiple BWPs, and before reporting a measurement report periodically each time, the UE measures each configured BWP and determines channel quality information corresponding to each BWP.

Optionally, the channel quality information may be used to measure the communication capability of each BWP, and for example, the channel quality information may include: RSRP (Reference Signal Receiving Power), RSRQ (Reference Signal Receiving Quality), CQI (Channel Quality Indicator), SINR (Signal to Interference plus Noise Ratio), RSSI (Received Signal Strength Indicator), channel occupancy, and other information.

In the embodiment of the present application, after determining the channel quality information corresponding to each BWP, the UE selects, according to the channel quality information corresponding to each BWP and the current traffic volume of the UE, a BWP that is most suitable for the UE from the BWPs as a target BWP.

For example, assuming that the UE is currently configured with two BWPs, where a bandwidth of one BWP is larger and a bandwidth of the other BWP is smaller, after the UE measures the two BWPs, assuming that channel qualities of the two BWPs both can meet a service requirement of the UE, when a traffic volume of the UE is larger, the UE selects the BWP with the larger bandwidth as a target BWP; and when the traffic of the UE is small, the UE selects the BWP with the smaller bandwidth as the target BWP.

S302, sending a BWP handover request message to the network device, where the BWP handover request message includes identification information of the target BWP.

In the embodiment of the present application, after determining the target BWP, the UE may send a BWP handover request message to the network device, requesting the network device to handover the UE to the target BWP.

S303, receiving a BWP switching instruction sent by the network device, and switching to a target BWP according to the BWP switching instruction.

In the embodiment of the present application, after receiving a BWP handover request message sent by a UE, a network device parses identification information of a target BWP contained in the BWP handover request message, and if the target BWP meets a BWP handover condition, sends a BWP handover instruction to the UE according to the identification information of the target BWP, and instructs the UE to handover to the target BWP.

In the BWP switching method provided in this embodiment of the present application, the UE may actively select the BWP to be switched according to the channel quality corresponding to each BWP and its own traffic volume, and report the BWP to the network device, so that the network device may flexibly configure the BWP for the UE according to the actual requirements of the UE, thereby effectively improving the resource utilization and better coping with the diversified application scenarios of the UE.

Based on the content described in the foregoing embodiment, in a possible implementation manner of the present application, the UE may determine the channel quality information corresponding to each BWP based on the CSI-RS or TRS of the serving cell where the UE is located.

In NR, CSI-RS is usually used to probe downlink channels and perform beam management, and the CSI-RS may be configured to 32 antenna ports, which means that a UE may probe 32 spatial channel conditions. A phase reference signal (TRS) is a multi-period CSI-RS, and the UE may estimate an error in frequency and time according to the TRS.

Based on the content described in the foregoing embodiment, in a possible implementation manner of the present application, when determining the target BWP corresponding to the UE according to the channel quality information corresponding to each BWP and the current traffic volume of the UE, the UE may first determine a candidate BWP in each BWP, where the channel quality is greater than the preset quality threshold, according to the channel quality information corresponding to each BWP, and then determine the target BWP in each candidate BWP according to the bandwidth corresponding to each candidate BWP and the current traffic volume of the UE.

For example, according to the current traffic of the UE, determining the minimum bandwidth of the BWP currently required by the UE; and determining the candidate BWP with bandwidth larger than the minimum bandwidth and the smallest difference with the minimum bandwidth as the target BWP.

Alternatively, in another possible embodiment of the present application, the UE determines the minimum bandwidth of the BWP currently required by the UE according to the current traffic volume, and then determines the bandwidth in each BWP to be greater than the minimum bandwidth, and determines the BWP with the best channel quality as the target BWP.

That is, in the embodiment of the present application, the UE may actively select the BWP to be switched according to the channel quality corresponding to each BWP and the traffic volume of the UE, so as to better cope with diversified application scenarios of the UE.

Based on the content described in the foregoing embodiment, an embodiment of the present application further provides a BWP switching method, and referring to fig. 4, fig. 4 is a flowchart illustrating another BWP switching method provided in the embodiment of the present application, where an execution subject of the embodiment is a network device in the embodiment shown in fig. 1, and as shown in fig. 4, the method includes:

s401, receiving a BWP handover request message sent by the UE, where the BWP handover request message includes identification information of a target BWP, and the target BWP is one of multiple BWPs configured by the UE.

S402, sending a BWP switching instruction to the UE according to the identification information of the target BWP, wherein the BWP switching instruction is used for instructing the UE to switch to the target BWP.

In the embodiment of the present application, after receiving a BWP handover request message sent by a UE, a network device parses the identification information of a target BWP contained in the BWP handover request message, and sends a BWP handover instruction to the UE according to the identification information of the target BWP, to instruct the UE to handover to the target BWP.

That is, in the BWP handover method provided in the embodiment of the present application, the network device may receive the BWP handover request message sent by the UE, and configure the BWP for the UE according to the BWP actively selected by the UE, so as to effectively improve the resource utilization and better cope with the diversified application scenarios of the UE.

For better understanding of the embodiment of the present application, referring to fig. 5, fig. 5 is a schematic signaling interaction diagram of a BWP handover method provided in the embodiment of the present application, as shown in fig. 5, the method includes:

and 501, the UE measures the channel quality information corresponding to each BWP configured for the UE.

And 502, the UE determines the target BWP corresponding to the UE according to the channel quality information corresponding to each BWP and the current traffic of the UE.

The ue sends a BWP handover request message to the network device, where the BWP handover request message includes identification information of the target BWP.

504. The network equipment sends a BWP switching instruction to the UE.

And 505, switching the UE to the target BWP.

According to the BWP switching method provided in the embodiment of the present application, the UE can actively select the BWP to be switched and report the BWP to the network device according to the channel quality corresponding to each BWP and its own traffic volume, so that the network device can flexibly configure the BWP for the UE according to the actual requirements of the UE, thereby effectively improving the resource utilization and better coping with the diversified application scenarios of the UE.

Based on the content described in the foregoing embodiments, the present application further provides a BWP switching apparatus, which is applied to a user equipment. Referring to fig. 6, fig. 6 is a schematic diagram illustrating program modules of a BWP switching apparatus provided in an embodiment of the present application, where the BWP switching apparatus 60 includes:

a measuring module 601, configured to measure channel quality information corresponding to each BWP configured for the UE, and determine a target BWP corresponding to the UE according to the channel quality information corresponding to each BWP and a current traffic volume of the UE.

A sending module 602, configured to send a BWP handover request message to a network device, where the BWP handover request message includes identification information of a target BWP.

The control module 603 is configured to receive a BWP handover instruction sent by the network device, and switch to a target BWP according to the BWP handover instruction.

That is, the BWP switching device 60 and the UE provided in the embodiment of the present application can actively select the BWP to be switched and report the BWP to the network device according to the channel quality corresponding to each BWP and the traffic volume of the UE, so that the network device can flexibly configure the BWP for the UE according to the actual requirements of the UE, thereby effectively improving the resource utilization and better coping with the diversified application scenarios of the UE.

In one possible embodiment, the measurement module 601 is configured to:

and determining the channel quality information corresponding to each BWP based on the CSI-RS of the serving cell where the UE is located.

In one possible embodiment, the measurement module 601 is configured to:

determining candidate BWPs with channel quality larger than a preset quality threshold in each BWP according to channel quality information corresponding to each BWP; and determining a target BWP in each candidate BWP according to the bandwidth corresponding to each candidate BWP and the current traffic of the UE.

Optionally, determining a minimum bandwidth of a BWP currently required by the UE according to a current traffic of the UE; and determining the candidate BWP with bandwidth larger than the minimum bandwidth and the smallest difference with the minimum bandwidth in each candidate BWP as the target BWP.

It should be noted that, the content specifically executed by the measurement module 601, the sending module 602, and the control module 603 in the embodiment of the present application is related to each step in the BWP switching method described in the embodiment shown in fig. 3, and specifically refer to the content described in the embodiment above, which is not described herein again.

Based on the content described in the foregoing embodiments, the present application further provides another BWP switching apparatus, which is applied to a network device. Referring to fig. 7, fig. 7 is a schematic block diagram of another BWP switching apparatus provided in an embodiment of the present application, where the BWP switching apparatus 70 includes:

a receiving module 701, configured to receive a BWP handover request message sent by a UE, where the BWP handover request message includes identification information of a target BWP, and the target BWP is one BWP in a plurality of BWPs configured by the UE.

A control module 702, configured to send, to the UE, a BWP handover instruction according to the identification information of the target BWP, where the BWP handover instruction is used to instruct the UE to handover to the target BWP.

It should be noted that, the content specifically executed by the receiving module 701 and the control module 702 in the embodiment of the present application is related to each step in the BWP switching method described in the embodiment shown in fig. 4, and specifically refer to the content described in the embodiment described above, which is not described herein again.

That is, the BWP switching device 70 provided in this embodiment of the application may receive the BWP switching request message sent by the UE, and configure the BWP for the UE according to the BWP actively selected by the UE, so as to effectively improve the resource utilization and better cope with the diversified application scenarios of the UE.

Further, based on the content described in the foregoing embodiments, an embodiment of the present application also provides a user equipment, where the user equipment includes at least one processor and a memory; wherein the memory stores computer execution instructions; the at least one processor executes the computer execution instruction stored in the memory to implement the steps executed by the user equipment side in the foregoing embodiments, which is not described herein again.

Further, based on the content described in the foregoing embodiments, the present application also provides a network device, where the network device includes at least one processor and a memory; wherein the memory stores computer execution instructions; the at least one processor executes computer execution instructions stored in the memory to implement the steps executed by the network device side in the above embodiments, which is not described herein again.

For better understanding of the embodiment of the present application, refer to fig. 8, and fig. 8 is a schematic diagram of a hardware structure of an electronic device according to the embodiment of the present application. The electronic device may be the user device or the network device.

As shown in fig. 8, the electronic apparatus 80 of the present embodiment includes: a processor 801 and a memory 802; wherein:

a memory 802 for storing computer-executable instructions;

the processor 801 is configured to execute the computer execution instructions stored in the memory to implement the steps performed by the user equipment in the foregoing embodiments, which may be specifically referred to in the foregoing description of the method embodiments.

Alternatively, the processor 801 is configured to execute computer-executable instructions stored in the memory to implement the steps performed by the network device in the foregoing embodiments, which may be specifically referred to in the foregoing description of the method embodiments.

Alternatively, the memory 802 may be separate or integrated with the processor 801.

When the memory 802 is provided separately, the apparatus further includes a bus 803 for connecting the memory 802 and the processor 801.

Further, based on the content described in the foregoing embodiments, an embodiment of the present application also provides a computer-readable storage medium, where a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the steps performed on the user equipment side in the foregoing embodiments are implemented.

Further, based on the content described in the foregoing embodiments, an embodiment of the present application further provides a computer-readable storage medium, where a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the steps performed by the network device side in the foregoing embodiments are implemented.

Further, based on the content described in the foregoing embodiments, the present application also provides a computer program product, including a computer program, where the computer program is executed by a processor to implement the steps executed by the user equipment side in the foregoing embodiments; or implement the steps performed by the network device side as in the above embodiments.

It should be understood that, in the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.

The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (in english: processor) to execute some steps of the methods described in the embodiments of the present application.

It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the methods disclosed in the incorporated application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.

The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.

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

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A BWP handover method, applied to a User Equipment (UE), the method comprising:

measuring channel quality information corresponding to each part bandwidth BWP configured for the UE, and determining a target BWP corresponding to the UE according to the channel quality information corresponding to each BWP and the current traffic of the UE;

receiving a BWP switching instruction sent by the network equipment, and switching to the target BWP according to the BWP switching instruction;

the measuring channel quality information corresponding to each partial bandwidth BWP configured by the UE includes:

determining channel quality information corresponding to each BWP based on a channel state information reference signal (CSI-RS) of a serving cell where the UE is located;

determining a target BWP corresponding to the UE according to the channel quality information corresponding to each BWP and the current traffic of the UE, including:

determining candidate BWPs with channel quality larger than a preset quality threshold in each BWP according to the channel quality information corresponding to each BWP;

2. The method of claim 1, wherein the determining the target BWP in each of the candidate BWPs according to the bandwidth corresponding to each of the candidate BWPs and the current traffic volume of the UE comprises:

3. A switching method of BWP, applied to a network device, the method comprising:

receiving a partial bandwidth BWP handover request message sent by User Equipment (UE), wherein the BWP handover request message comprises identification information of a target BWP, and the target BWP is one of a plurality of BWPs configured by the UE; the target BWP is a candidate BWP of which the channel quality is greater than a preset quality threshold in each BWP determined by the UE according to the channel quality information corresponding to each BWP; determining in each candidate BWP according to the bandwidth corresponding to each candidate BWP and the current traffic of the UE;

sending a BWP handover instruction to the UE according to the identification information of the target BWP, wherein the BWP handover instruction is used for indicating the UE to handover to the target BWP;

the sending the BWP handover command to the UE includes:

4. A switching apparatus of BWP, applied to a User Equipment (UE), the apparatus comprising:

a measuring module, configured to measure channel quality information corresponding to each partial bandwidth BWP configured for the UE, and determine a target BWP corresponding to the UE according to the channel quality information corresponding to each BWP and a current traffic volume of the UE;

the control module is used for receiving a BWP switching instruction sent by the network device and switching to the target BWP according to the BWP switching instruction;

the measurement module is specifically configured to determine channel quality information corresponding to each BWP based on a channel state information reference signal CSI-RS of a serving cell in which the UE is located;

5. A switching apparatus of BWP, applied to a network device, the apparatus comprising:

a receiving module, configured to receive a BWP handover request message sent by a user equipment UE, where the BWP handover request message includes identification information of a target BWP, and the target BWP is one of BWPs configured by the UE; the target BWP is a candidate BWP of which the channel quality is greater than a preset quality threshold in each BWP determined by the UE according to the channel quality information corresponding to each BWP; determining in each candidate BWP according to the bandwidth corresponding to each candidate BWP and the current traffic of the UE;

a control module, configured to send a BWP handover instruction to the UE according to the identification information of the target BWP, where the BWP handover instruction is used to instruct the UE to handover to the target BWP;

the receiving module is specifically configured to send a radio resource control RRC message or downlink control information DCI to the UE, where the RRC message or the DCI includes the BWP switching instruction.

6. A user device, comprising: at least one processor and a memory;

the memory stores computer execution instructions;

the at least one processor executing the memory-stored computer-executable instructions cause the at least one processor to perform the BWP handoff method of any one of claims 1-2.

7. A network device, comprising: at least one processor and a memory;

the memory stores computer-executable instructions;

the at least one processor executing the memory-stored computer-executable instructions cause the at least one processor to perform the BWP handoff method of claim 3.

8. A computer-readable storage medium having stored therein computer-executable instructions that, when executed by a processor, implement the BWP switching method according to any one of claims 1-2;

or, when the computer executes the instructions, a processor implements the BWP switching method of claim 3.