WO2022021131A1

WO2022021131A1 - Initial bandwidth part (bwp) reselection method, terminal device, and network device

Info

Publication number: WO2022021131A1
Application number: PCT/CN2020/105459
Authority: WO
Inventors: 胡奕; 李海涛
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2022-02-03
Also published as: CN115699868A

Abstract

Provided are an initial bandwidth part (BWP) reselection method, a terminal device, and a network device. It is beneficial to switching to an initial BWP having better channel quality and improving communication performance. The method comprises: a terminal device determines a target initial BWP among multiple initial BWPs according to the channel quality of each initial BWP in the multiple initial BWPs, the multiple initial BWPs comprising a first initial BWP currently activated by the terminal device; when the target initial BWP is not the first initial BWP, the terminal device switches from the first initial BWP to the target initial BWP.

Description

Method, terminal device and network device for reselection of initial bandwidth part BWP

technical field

The embodiments of the present application relate to the field of communications, and in particular, to a method, a terminal device, and a network device for reselection of an initial bandwidth part BWP.

Background technique

For a terminal device in a non-connected state, the master information block (Master Information Block, MIB) and system information block (System Information Block, SIB) of the residing cell can be obtained through the cell defining SSB (CD-SSB) )1 information to obtain the relevant configuration information of the initial bandwidth part (initial Bandwidth Part, initial BWP) for initial access, for example, including the relevant configuration information of the initial uplink BWP and the initial downlink BWP.

In the communication system, consider using satellite communication to provide communication services to users. Satellites use multiple beams to cover the ground. A satellite can form tens or even hundreds of beams to cover the ground, and a satellite beam can cover a diameter of tens to above Hundred kilometers of ground area. In order to reduce the co-channel interference between different satellite beams, different frequency points/carriers/frequency bands can be used for adjacent satellite beams during network deployment. One method is to configure different BWPs in the same cell for different satellite beams, so that The movement of the terminal between satellite beams does not need to do cell handover, but only needs to do BWP handover in the cell. For a non-connected terminal device, it is necessary to configure multiple different initial BWPs for different satellite beams. With the movement of the terminal and the satellite, the channel quality of the terminal device on different satellite beams will change continuously. In this case, how to select the initial BWP for the terminal device in the non-connected state is an urgent problem to be solved.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a method, a terminal device, and a network device for reselecting an initial bandwidth part BWP, which are beneficial to switching to an initial BWP with better channel quality and improve communication performance.

In a first aspect, a method for reselection of an initial bandwidth part BWP is provided, comprising: a terminal device determining a target initial BWP among the plurality of initial BWPs according to the channel quality of each initial BWP among the plurality of initial BWPs, wherein , the multiple initial BWPs include the first initial BWP currently activated by the terminal device; if the target initial BWP is not the first initial BWP, the terminal device switches from the first initial BWP to the target initial BWP.

A second aspect provides a method for reselection of an initial bandwidth part BWP, comprising: a network device sending BWP reselection configuration information to a terminal device, where the BWP reselection configuration information is used by the terminal device in multiple initial BWPs Determine the target initial BWP for reselection.

In a third aspect, a terminal device is provided for executing the method in the first aspect or any possible implementation manner of the first aspect. Specifically, the terminal device includes a unit for executing the method in the first aspect or any possible implementation manner of the first aspect.

In a fourth aspect, a network device is provided for executing the method in the second aspect or any possible implementation manner of the second aspect. Specifically, the network device includes a unit for executing the method in the second aspect or any possible implementation manner of the second aspect.

In a fifth aspect, a terminal device is provided, and the terminal device includes: a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the above-mentioned first aspect or each implementation manner thereof.

In a sixth aspect, a network device is provided, and the network device includes: a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or each of its implementations.

In a seventh aspect, a chip is provided for implementing any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.

Specifically, the chip includes: a processor for invoking and running a computer program from a memory, so that a device on which the chip is installed executes any one of the above-mentioned first to second aspects or each of its implementations method.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to execute the method in any one of the above-mentioned first aspect to the second aspect or each of its implementations.

In a ninth aspect, a computer program product is provided, comprising computer program instructions, the computer program instructions causing a computer to execute the method in any one of the above-mentioned first to second aspects or the respective implementations thereof.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method in any one of the above-mentioned first to second aspects or the respective implementations thereof.

Based on the above technical solution, the terminal device can perform initial BWP reselection based on the channel quality of multiple initial BWPs, which is beneficial to switch to other initial BWPs when the channel quality of the currently activated initial BWP becomes poor, thereby ensuring that The communication success rate of the terminal device.

Description of drawings

FIG. 1 is a schematic diagram of a communication system architecture provided by the present application.

FIG. 2 is a beam distribution diagram in an NTN system according to an embodiment of the present application.

FIG. 3 is a schematic flowchart of a method for reselection of an initial bandwidth part BWP according to an embodiment of the present application.

FIG. 4 is an example of a method for reselection of an initial BWP according to an embodiment of the present application.

FIG. 5 is another example of a method for reselection of an initial BWP according to an embodiment of the present application.

FIG. 6 is a schematic flowchart of another method for reselection of an initial bandwidth part BWP according to an embodiment of the present application.

FIG. 7 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

FIG. 8 is a schematic block diagram of a network device provided according to an embodiment of the present application.

FIG. 9 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

FIG. 10 is a schematic block diagram of a chip provided according to an embodiment of the present application.

FIG. 11 is a schematic block diagram of a communication system provided by an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. With regard to the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a wideband Code Division Multiple Access (CDMA) system (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) system, Advanced Long Term Evolution (Advanced long term evolution, LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.

Optionally, the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.

Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered unshared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device can be a station (STATION, ST) in the WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In this embodiment of the present application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).

In this embodiment of the present application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks The network equipment (gNB) in the PLMN network in the future evolution or the network equipment in the NTN network, etc.

As an example and not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a High Elliptical Orbit (HEO) ) satellite etc. Optionally, the network device may also be a base station set in a location such as land or water.

As an example, the altitude of LEO ranges from 500km to 1500km, and the corresponding orbital period is about 1.5 hours to 2 hours. The signal propagation delay of single-hop communication between UE and satellite is generally less than 20ms. The maximum satellite viewing time is 20 minutes. The signal propagation distance is short, the link loss is small, and the transmit power requirements of the user terminal are not high.

As an example, GEO has an orbital altitude of 35,786 km and a 24-hour period around the Earth. The signal propagation delay of single-hop communication between UE and satellite is generally 250ms.

In this embodiment of the present application, a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). Pico cell), Femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

Exemplarily, a communication system 100 to which this embodiment of the present application is applied is shown in FIG. 1 . The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). The network device 110 may provide communication coverage for a particular geographic area, and may communicate with terminal devices located within the coverage area.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that, in the embodiments of the present application, a device having a communication function in the network/system may be referred to as a communication device. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. ; The communication device may also include other devices in the communication system 100, such as other network entities such as a network controller, a mobility management entity, etc., which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

It should be understood that the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship. For example, if A indicates B, it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.

It should be understood that in this embodiment of the present application, NR can also be deployed independently. In the 5G network environment, in order to reduce air interface signaling, quickly restore wireless connections, and quickly restore data services, a new Radio Resource Control (Radio Resource Control) is defined. , RRC) state, namely RRC_INACTIVE (inactive) state. This state is different from the RRC_IDLE (idle) and RRC_CONNECTED (connected) states.

In the RRC_IDLE state: mobility is based on terminal device cell selection and reselection, paging is initiated by the Core Network (CN), and the paging area is configured by the CN. There is no terminal device access layer (Access Stratum, AS) context on the base station side, nor does an RRC connection exist.

In the RRC_CONNECTED state: there is an RRC connection, and the base station and the terminal device have the terminal device AS context. The network equipment knows the location of the terminal equipment at the specific cell level. Mobility is the mobility of network device control. Unicast data can be transmitted between the terminal equipment and the base station.

RRC_INACTIVE: Mobility is based on terminal device cell selection and reselection, there is a connection between CN-NR, terminal device AS context exists on a certain base station, paging is triggered by Radio Access Network (RAN), based on The paging area of the RAN is managed by the RAN, and the network equipment knows the location of the terminal device based on the level of the paging area of the RAN.

It should be noted that, in this embodiment of the present application, the inactive state may also be referred to as a deactivated state, which is not limited in the present application.

The maximum channel bandwidth supported in the NR system can reach 400MHZ (wideband carrier). If the UE keeps working on the wideband carrier, the power consumption of the UE is very large. Adjusting the radio frequency (RF) bandwidth of the UE according to the actual throughput of the UE can optimize the power consumption of the UE, which is the motivation for introducing the Bandwidth Part (BWP).

For a connected terminal device, there can only be at most one active downlink BWP and one active uplink BWP at a time. The network device can configure a maximum of 4 uplink BWPs and a maximum of 4 downlink BWPs for a terminal in a connected state. For a Frequency Division Duplexing (Frequency Division Duplexing, FDD) system, there is no explicit association (association) relationship between the uplink BWP and the downlink BWP. For example, the network device can configure 4 uplink BWPs for an RRC_CONNECTED terminal (the uplink BWP index (UL BWP index) is 0, 1, 2, 3 respectively) and 4 downlink BWPs (the downlink BWP index (DL BWP index) are respectively 0, 1, 2, 3). The currently activated UL BWP index may be 0, and the currently activated DL BWP index may be 1. If the downlink BWP is switched to another BWP through the Downlink Control Information (DCI) command, such as switching from the currently activated DL BWP 1 to DL BWP 2, the UL BWP can remain unchanged.

Terminal equipment in idle state and inactive state can obtain the master information block (Master Information Block, MIB) and system information block (System Information) of the camping cell through the cell-defining synchronization signal block (cell defining SSB, CD-SSB). Block, SIB)1 information. Wherein, SIB1 indicates the relevant configuration information of the initial BWP (initial BWP) used for initial access, for example, including the relevant configuration information of the initial UL BWP and the initial DL BWP. In the relevant configuration information of the initial UL BWP, the network configures random access resources (for example, RACH-ConfigCommon) for the initial access terminal equipment, and the random access resources and synchronization signal blocks (Synchronization Signal Block, SSB) between Correspondence. The network device may also control the selection of random access resources of the terminal device by configuring a reference signal receiving power (Reference Signal Receiving Power, RSRP) threshold (for example, rsrp-ThresholdSSB). When the random access process is triggered, the terminal can select an SSB whose RSRP measurement value meets the above-mentioned RSRP threshold, and further select the corresponding random access resource according to the correspondence between the random access resource and the SSB to send the random access preamble (ie, Msg1), and receive the random access response message (ie Msg2) sent by the network on the selected SSB.

In the NTN system, in order to ensure the coverage of satellites and improve the system capacity of the entire satellite communication system, satellites use multiple beams to cover the ground. A satellite can form dozens or even hundreds of beams to cover the ground, and a satellite beam can cover a diameter of Dozens to hundreds of kilometers of ground area.

A satellite beam is the smallest unit that a satellite covers the earth's surface, corresponding to different directions. Usually, a satellite covers the earth's surface through hundreds or thousands of satellite beams. These satellite beams can be deployed as different cells or within the same cell.

In order to reduce co-channel interference between different satellite beams, different frequency points/carriers/frequency bands can be used for adjacent satellite beams during network deployment, as shown in Figure 2. An implementation method is to configure different BWPs in the same cell for different satellite beams, so that the terminal equipment does not need to perform cell handover when moving between satellite beams, but only needs to perform intra-cell BWP handover.

For a non-connected UE, multiple different initial BWPs need to be configured for different satellite beams. With the movement of the UE or the satellite, the channel quality of the UE on different satellite beams will change continuously. In this case, how to select the initial BWP for the UE in the non-connected state is an urgent problem to be solved.

FIG. 3 is a schematic flowchart of a method 200 for reselection of an initial bandwidth part BWP according to an embodiment of the present application. The method 200 may be executed by a terminal device in the communication system shown in FIG. 1 , and as shown in FIG. 3 , the method 200 may include at least some of the following contents:

S210: The terminal device determines a target initial BWP among the plurality of initial BWPs according to the channel quality of each initial BWP in the plurality of initial BWPs, where the plurality of initial BWPs include the first BWP currently activated by the terminal device initial BWP;

S320, in the case that the target initial BWP is not the first initial BWP, the terminal device switches from the first initial BWP to the target initial BWP.

It should be understood that the embodiments of the present application may be applied to scenarios where terminal devices or network devices are highly mobile, such as NTN scenarios, or may also be applied to other scenarios where initial BWP reselection is required, and the present application is not limited thereto.

In this embodiment of the present application, the multiple initial BWPs may correspond to the same cell, for example, a cell in which the terminal device currently works (or currently resides), that is, a serving cell (serving cell). That is, the initial BWP reselection according to the embodiment of the present application is the reselection between different initial BWPs in the same cell.

By configuring multiple different initial BWPs for a cell, in this way, when the terminal equipment or network equipment moves and causes the channel quality to change, the terminal equipment does not need to perform cell handover, but only needs to perform BWP handover in the cell, which can reduce the number of terminals. The interaction between devices and network devices improves system performance.

Optionally, in an NTN scenario, each initial BWP may correspond to one satellite beam, and different satellite beams correspond to different initial BWPs.

Optionally, in this embodiment of the present application, different initial BWPs do not overlap each other in the frequency domain.

In some embodiments, the multiple initial BWPs include multiple uplink initial BWPs and multiple downlink initial BWPs, and the multiple uplink initial BWPs and the multiple downlink initial BWPs have a corresponding relationship. For example, the two are in a one-to-one relationship, that is, each uplink initial BWP corresponds to one downlink initial BWP.

In some embodiments, the network device may send initial BWP configuration information to the terminal device, where the initial BWP configuration information is used to configure the plurality of downlink initial BWPs and the plurality of uplink initial BWPs, and/or the plurality of initial BWPs The corresponding relationship between the initial downlink BWP and multiple initial BWPs in the uplink.

In some embodiments, the initial BWP configuration information can be configured through a broadcast message, for example, the initial BWP configuration information can be carried in a system information block (System Information Block, SIB), or can also be configured through other messages or signaling , for example, through radio resource control (Radio Resource Control, RRC) signaling configuration, etc., the present application is not limited to this.

In some embodiments, the uplink initial BWP and the downlink initial BWP with the corresponding relationship use the same BWP identifier (ID), or in other words, the uplink initial BWP and the downlink initial BWP may be associated together through the same BWP ID.

The uplink initial BWP and the downlink initial BWP having a corresponding relationship may be referred to as a pair of initial BWPs, or an initial BWP pair. Therefore, the initial BWP in the method for reselection of the initial BWP in the embodiment of the present application may refer to a pair of initial BWPs. Since there is a correspondence between the uplink initial BWP and the downlink initial BWP, when initial BWP reselection is performed, the initial BWP in one direction can be determined, and then the initial BWP in the other direction can be determined according to the corresponding relationship. For example, when the target next initial BWP is determined among the multiple downlink initial BWPs, the uplink initial BWP corresponding to the target next initial BWP may be used as the target uplink initial BWP. Further, in the uplink and downlink communication, the corresponding target initial BWP can be used for communication.

That is, reselection of the initial BWP may include reselection of the initial BWP in the uplink and/or reselection of the initial BWP in the downlink. Hereinafter, the reselection initial BWP is taken as an example for the reselection downlink initial BWP, but the present application is not limited to this.

Optionally, in some embodiments, the initial BWP configuration information is further used to configure the association relationship between the initial BWP and the measurement reference signal. For example, a pair of initial BWPs may be configured to be associated with one or more measurement reference signals, or one or more measurement reference signals may be configured for the uplink initial BWP and the downlink initial BWP respectively. In the following, description will be given by taking a pair of uplink initial BWP and downlink initial BWP that have a corresponding relationship associating the same measurement reference signal as an example, but the present application is not limited to this.

Optionally, in this embodiment of the present application, measurement reference signals associated with different initial BWPs are different, or in other words, there is no intersection. In other words, one measurement reference signal is only associated with a pair of uplink initial BWP and downlink initial BWP.

Optionally, the measurement reference signal in this embodiment of the present application may include, for example, at least one of the following:

Synchronization Signal Block (SSB);

Channel State Information Reference Signal (CSI-RS);

Demodulation Reference Signal (DMRS).

Optionally, the SSB may include, for example, a primary synchronization signal (Primary Synchronization Signal, PSS), a secondary synchronization signal (Secondary Synchronization Signal, SSS), and the like.

Optionally, the DMRS may include, for example, a channel for demodulating a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), a physical downlink control channel (Physical Downlink Control Channel, PDCCH), and a physical layer broadcast channel (Physical Broadcast Channel, PBCH). DMRS.

It should be understood that in this embodiment of the present application, the measurement reference signal is a beam realized by transmission of the measurement reference signal. In a certain sense, the measurement reference signal exists in the form of a beam. Therefore, the measurement reference signal can be called In order to measure the reference signal beam, or the reference signal beam, the measurement result of the measurement of the reference signal can be understood as the measurement result of the measurement of the reference signal beam. That is, determining the measurement result of the initial BWP according to the measurement result of the measurement reference signal associated with the initial BWP may be determining the measurement result of the initial BWP according to the measurement result of the measurement reference signal beam associated with the initial BWP.

In the following, the measurement reference signal is an SSB as an example for description, but the present application is not limited to this.

Optionally, in some embodiments, the network device may further configure BWP reselection configuration information for the terminal device, which is used for initial BWP reselection of the terminal device.

Optionally, the BWP reselection configuration information includes at least one of the following:

the first channel quality threshold, representing the minimum channel quality threshold that the measurement reference signal used to determine the channel quality of the initial BWP needs to meet;

The first measurement reference signal number threshold represents the maximum number of measurement reference signals used to determine the channel quality of the initial BWP. When the measurement reference signal is an SSB, the first measurement reference signal number threshold may be the th A threshold for the number of SSBs;

The first channel quality range, which represents the maximum difference from the channel quality of the initial BWP with the best channel quality.

In some embodiments, the BWP reselection configuration information may be configured through a broadcast message, for example, the broadcast message may be SIB, or may also be configured through other messages or signaling, such as RRC signaling.

In other embodiments, the BWP reselection configuration information may also be pre-configured, or the network device may not configure the first channel quality threshold, the first measurement reference signal number threshold and the first channel quality for the terminal device. at least one of the ranges.

In this embodiment of the present application, the channel quality of the initial BWP may be determined according to the measurement result of the SSB associated with the initial BWP. Optionally, the measurement result is, for example, but not limited to at least one of the following: a channel quality indicator (Channel Quantity Indicator, CQI), a reference signal received power (Reference Signal Receiving Power, RSRP), a reference signal received quality (Reference Signal Receiving Quality, RSRQ), Signal to Interference plus Noise Ratio (SINR).

It should be understood that, in the embodiment of the present application, when performing channel quality comparison, the comparison may be performed directly according to the measurement result, or the measurement result may be converted into other related parameters and then compared, which is not limited in the present application. It can be understood that the larger the measurement result is, the higher the channel quality is, and the smaller the measurement result is, the worse the channel quality is.

Optionally, in this embodiment of the present application, the channel quality threshold may be a threshold related to the measurement result, for example, when the measurement result is RSRP, the channel quality threshold may be the RSRP threshold, or, when the measurement result is RSRQ, the channel quality threshold The threshold may be an RSRQ threshold.

In some embodiments, the channel quality of the initial BWP may be determined according to the measurement result of the SSB associated with the initial BWP and the BWP reselection configuration information.

Specifically, the initial BWP is associated with at least one SSB, and each SSB corresponds to one measurement result, and the terminal device may determine the channel quality of the initial BWP according to the at least one measurement result.

As an embodiment, the terminal device may determine the channel quality of the initial BWP according to the first channel quality threshold and/or the first SSB number threshold in combination with the at least one measurement result.

The first channel quality threshold is used to control the size of the measurement result participating in the channel quality calculation of the initial BWP, and the first SSB number threshold is used to control the size of the SSBs involved in the channel quality calculation of the initial BWP. That is, in some cases, not all SSB measurement results are involved in the calculation of the channel quality of the initial BWP.

For convenience of distinction and description, in this embodiment of the present application, a measurement result greater than the first channel quality threshold is recorded as a high-quality measurement result, and the SSSB corresponding to the high-quality measurement result is a high-quality SSB.

As an example, if the first channel quality threshold is not configured, the terminal device may use the largest (or the highest) measurement result among the at least one measurement result as the channel quality of the initial BWP.

As another example, if the threshold for the number of the first measurement reference signals is not configured, the terminal device may use the largest measurement result among the at least one measurement result as the channel quality of the initial BWP.

As another example, if the largest measurement result in the at least one measurement result is less than or equal to the first channel quality threshold, that is, the at least one measurement result is less than or equal to the first channel quality threshold. The terminal device may use the largest measurement result among the at least one measurement result as the channel quality of the initial BWP.

As another example, if the first measurement reference signal quantity threshold is not configured, but the first channel quality threshold is configured, and the at least one measurement result has a high-quality measurement result, the terminal device may The largest measurement result in at least one measurement result is used as the channel quality of the initial BWP, or if there are multiple high-quality measurement results, the terminal device may also determine the channel quality of the initial BWP according to all high-quality measurement results, for example, The linear average of all high-quality measurements is taken as the channel quality of the initial BWP.

As another example, if the first SSB number threshold and the first channel quality threshold are configured, and there is a high-quality measurement result in the at least one measurement result, the terminal device may use the channel quality in the high-quality SSB The channel quality of the initial BWP is determined by the measurement result corresponding to the SSB that is the highest and does not exceed the first SSB number threshold.

For example, if the first SSB number threshold is 5, and there are 3 measurement results satisfying the first channel quality threshold, the channel quality of the initial BWP may be determined according to the 3 measurement results.

For example, if the first SSB number threshold is 5, and there are 7 measurement results satisfying the first channel quality threshold, the initial BWP may be determined according to the 5 measurement results with the best channel quality among the 7 measurement results. channel quality.

In the above, the method for determining the channel quality of the initial BWP is only an example, and in practical applications, it can be adjusted according to specific circumstances, and the present application is not limited to this.

Further, in some embodiments, the terminal device may perform initial BWP reselection according to the channel qualities of the multiple initial BWPs. As an embodiment, the terminal device may determine the target initial BWP for reselection according to the channel quality of the first initial BWP currently activated by the terminal device and the channel qualities of other initial BWPs in the plurality of initial BWPs.

The initial BWP currently activated by the terminal device may be referred to as the current working initial BWP, or the currently resident initial BWP, that is, the terminal device may perform data communication through the initial BWP, such as receiving a paging message from the network device, or initiating data communication. random access, etc.

For example, if at least one initial BWP whose channel quality is higher than the first initial BWP exists among the plurality of initial BWPs within a period of time, a target initial BWP is determined from the at least one initial BWP. Otherwise, no reselection of the initial BWP is performed. That is, only when the channel quality of an initial BWP is better and stable, it is used as a candidate initial BWP.

It should be understood that, in this embodiment of the present application, within a period of time, the channel quality of the at least one initial BWP is higher than the first initial BWP may refer to: within the period of time, the channel quality of the at least one initial BWP are higher than the channel quality of the first initial BWP, or it may also refer to: in most of the period of time, the channel quality of the at least one initial BWP is higher than the channel quality of the first initial BWP, Alternatively, the number of times that the channel quality of the at least one first initial BWP is higher than the channel quality of the first initial BWP during this period of time is greater than a certain threshold. In short, the channel quality of the at least one initial BWP is better and stable Sex is higher.

Optionally, the length of the period of time may be a BWP reselection time parameter, and the parameter may be configured through a broadcast message, or may also be configured through RRC signaling, and the present application is not limited thereto.

In some other embodiments, the terminal device may determine whether to perform the re-initialization of the initial BWP according to the channel quality of the first initial BWP currently activated by the terminal device and the channel quality of other initial BWPs in the plurality of initial BWPs. select.

For example, when an initial BWP whose channel quality is higher than that of the first initial BWP exists among the plurality of initial BWPs, it is determined to perform reselection of the initial BWP, or, there is no channel quality higher than that of the plurality of initial BWPs. When the first initial BWP is the initial BWP, no initial BWP reselection is performed.

For another example, the terminal device may be configured with a first initial BWP reselection threshold. When the channel quality of other initial BWPs is higher than the first initial BWP reselection threshold, initial BWP reselection is performed, otherwise, no initial BWP reselection is performed. Reselection of the initial BWP.

For another example, a second initial BWP reselection threshold may be configured on the terminal device, and when the channel quality of the first initial BWP is lower than the second initial BWP reselection threshold, initial BWP reselection is performed; otherwise, initial BWP reselection is performed. , no reselection of the initial BWP is performed.

Optionally, in some other embodiments, an initial BWP reselection measurement threshold may also be configured on the terminal device, and when the channel quality of the first initial BWP is lower than the initial BWP reselection measurement threshold, triggering Measurement of the channel quality of other initial BWPs is performed. Otherwise, the measurement of the channel quality of the other initial BWPs is not performed.

Further, when performing cell reselection, the terminal device may determine a target initial BWP in at least one initial BWP whose channel quality is better than the channel quality of the first initial BWP.

As an embodiment, the terminal device may use the initial BWP with the best channel quality among the at least one initial BWP as the target initial BWP.

As another embodiment, the terminal device may determine the target initial BWP according to the channel quality of the at least one initial BWP and a first channel quality range, where the first channel quality range represents an initial optimal channel quality The maximum difference in channel quality of BWP.

Optionally, as an example, the first channel quality range may be 3dB, that is, the maximum difference between the channel quality and the initial BWP with the best channel quality is 3dB.

For example, the terminal device may sort the channel quality of the at least one initial BWP in descending order, and use the initial BWP with the best channel quality as the reference initial BWP, according to the channel quality of the reference initial BWP and the In the first channel quality range, at least one candidate initial BWP is determined in the at least one initial BWP, and further, a target initial BWP is determined in the at least one candidate initial BWP. Wherein, the candidate initial BWP is an initial BWP whose channel quality difference from the reference initial BWP is within the first channel quality range.

As an embodiment, any candidate initial BWP among the at least one candidate initial BWP may be used as the target initial BWP. Or the initial BWP that the terminal device has worked before is used as the target initial BWP.

As another embodiment, the target initial BWP is determined in the at least one candidate initial BWP in combination with other information, for example, the target initial BWP is determined according to a second channel quality threshold.

For example, the initial BWP with the largest number of SSBs satisfying the second channel quality threshold among the at least one candidate initial BWP is used as the target initial BWP. The initial BWP with the largest number of SSBs satisfying the second channel quality threshold is selected as the target initial BWP, so that after entering the connected state, the terminal device can use more SSBs to communicate with the network device, which is beneficial to improve communication performance.

For another example, the initial BWP whose number of SSBs that satisfy the second channel quality threshold is greater than a certain threshold in the at least one candidate initial BWP is used as the target initial BWP.

If there is one initial BWP greater than the first threshold, the one initial BWP may be used as the target initial BWP, or. If there are multiple initial BWPs greater than the first threshold, any one of the initial BWPs may be used as the target initial BWP, or the initial BWP that the terminal device has worked before may be used as the target initial BWP.

In still other embodiments, the terminal device may determine a target initial BWP among the at least one candidate initial BWP in combination with historical initial BWP reselection information. For example, among the at least one candidate initial BWP, the initial BWP that the terminal device has worked on is used as the target initial BWP, or the initial BWP with the longest working time among the at least one candidate initial BWP is used as the target initial BWP, and so on.

It should be understood that, in this embodiment of the present application, the second channel quality threshold and the aforementioned first channel quality threshold may be the same threshold, or may be different thresholds, which are not limited in this application.

After the target initial BWP is determined, the terminal device may switch from the first initial BWP to the target initial BWP, that is, from the first initial BWP to the target initial BWP. Subsequent communications, eg, receiving paging messages, performing initial random access, etc., are performed on the target initial BWP.

Optionally, in some other embodiments, if the channel quality of other initial BWPs except the first initial BWP among the plurality of initial BWPs is lower than the channel quality of the first initial BWP within a period of time quality, the terminal device can continue to work on the first initial BWP, that is, the initial BWP switching is not performed.

Hereinafter, with reference to specific embodiments, the method for reselection of the initial BWP according to the embodiments of the present application will be described.

Example 1

In the first embodiment, the UE performs initial BWP reselection based on the first initial BWP reselection criterion. The details are as follows: if the channel quality of at least one initial BWP is higher than the channel quality of the currently activated initial BWP for a period of time, the UE switches to the initial BWP with the highest channel quality among the at least one initial BWP.

Specifically, the first embodiment may include at least some of the following steps:

S201, the UE receives a system message broadcast by a network device, where the system information includes parameters related to initial BWP and SSB measurement. For example, it can be used to configure at least one of the following information:

(a), N DL initial BWPs and N UL initial BWPs, where N is greater than 1.

Wherein, the N DL initial BWPs do not overlap each other in the frequency domain, and the N UL initial BWPs do not overlap each other in the frequency domain.

(b), the correspondence between the N DL initial BWPs and the N UL initial BWPs.

Each DL initial BWP in the N DL initial BWPs corresponds to one UL initial BWP in the N UL initial BWPs.

Optionally, in some embodiments, the BWP ID can be used for pairing, and the DL initial BWP and the UL initial BWP with the same BWP ID are associated together.

(c) For each pair of initial BWPs, indicate at least one SSB associated with the initial BWP.

Wherein, there is no intersection between the SSBs associated with the N pairs of initial BWPs.

(d), the first channel quality threshold, which is used to determine the minimum channel quality threshold that each SSB of the channel quality of the initial BWP needs to meet.

(e), the first SSB number threshold, which is used to determine the maximum number of SSBs of the channel quality of the initial BWP.

It should be understood that, in this embodiment of the present application, the information used for initial BWP reselection as exemplified above may be configured through the same system message, or may also be configured through different system messages, which is not limited in this application.

S202, the UE determines the channel quality of each initial BWP based on the measurement result of at least one SSB associated with each initial BWP.

For the specific determination method, reference is made to the relevant descriptions of the foregoing embodiments, which are not repeated here for brevity.

S203, the UE compares the channel quality of the currently resident initial BWP with the channel quality of other initial BWPs in the multiple initial BWPs. If the channel quality of at least one initial BWP is higher than the channel quality of the currently residing initial BWP for a period of time, the UE uses the initial BWP with the highest channel quality among the at least one initial BWP as the target initial BWP for reselection.

Further, the terminal device may switch from the currently resident initial BWP to the target initial BWP, that is, switch from the currently resident initial BWP to the target initial BWP. Perform subsequent communications on the target initial BWP, such as receiving paging messages, performing initial random access, etc.

4, the UE has four initial BWPs, including initial BWP1, initial BWP2, initial BWP3 and initial BWP4, the UE currently resides on initial BWP4, and the channel quality of the four initial BWPs is from high to low. The ordering is initial BWP3, initial BWP1, initial BWP2 and initial BWP4. In the first embodiment, the UE can switch to the initial BWP3.

Embodiment 2

In the second embodiment, the UE performs initial BWP reselection based on the second initial BWP reselection criterion. The details are as follows: if the channel quality of at least one initial BWP is higher than the channel quality of the currently resident initial BWP for a period of time, the UE switches to the channel where the difference between the channel quality and the channel quality of the initial BWP with the best channel quality is equal to the first channel quality. The initial BWP with the largest number of SSBs within the range and satisfying the first channel quality threshold.

Specifically, the second embodiment may include at least some of the following steps:

S301, the UE receives a system message broadcast by a network device, where the system information includes parameters related to initial BWP and SSB measurement. For example, it can be used to configure at least one of the following information:

(a), N DL initial BWPs and N UL initial BWPs, where N is greater than 1.

(f), the first channel quality range, which is used to control the candidate initial BWP for reselection.

It should be understood that, in this embodiment of the present application, the information used for initial BWP reselection as exemplified above may be configured through the same system message, or may be configured through different system messages, which is not limited in this application.

S302, the UE determines the channel quality of each initial BWP based on the measurement result of at least one SSB associated with each initial BWP.

S303, the UE compares the channel quality of the currently resident initial BWP with the channel quality of other initial BWPs in the multiple initial BWPs.

Further, in S303, the UE compares the channel quality of each initial BWP in the plurality of initial BWPs with the channel quality of the currently activated initial BWP. If the channel quality of at least one initial BWP is higher than the channel quality of the currently resident initial BWP for a period of time, the UE determines in the at least one initial BWP that the initial BWP satisfying the first channel quality range constitutes a candidate initial BWP .

Further, the UE selects the target initial BWP from the candidate initial BWPs. For example, the initial BWP with the largest number of SSBs whose measurement results satisfy the first channel quality threshold among the SSBs associated with the candidate initial BWP may be selected as the target initial BWP.

5, the UE has four initial BWPs, including initial BWP1, initial BWP2, initial BWP3 and initial BWP4, the UE currently resides on initial BWP4, and the channel quality of the four initial BWPs is from high to low. The ordering is initial BWP3, initial BWP1, initial BWP2 and initial BWP4.

The initial BWP within the first channel quality range includes initial BWP1, initial BWP2, and initial BWP3, wherein the SSB associated with the initial BWP3 includes an SSB whose measurement result is greater than the first channel quality threshold, and the initial BWP3 The SSB associated with BWP1 includes one SSB whose measurement result is greater than the first channel quality threshold, and the SSB associated with the initial BWP2 includes two SSBs whose measurement result is greater than the first channel quality threshold. Then in the second embodiment, the UE can switch to the initial BWP2.

It should be understood that the reselection criteria exemplified in Embodiment 1 and Embodiment 2 above are only examples. In other embodiments, other methods described above may also be used to determine the target initial BWP for reselection, which is not limited in this application. .

Optionally, in some embodiments, the terminal device may determine, according to an instruction of the network device, a manner of reselecting an initial BWP among the plurality of initial BWPs. For example, the network device may instruct the terminal device to use the foregoing initial BWP reselection criterion 1 or initial BWP reselection criterion 2 to perform initial BWP reselection.

Take the indication of two reselection criteria as an example to illustrate the specific indication manner.

Indication mode 1: The network device may display to the terminal device which reselection criterion is used for re-selection of the initial BWP.

For example, the network device may send first indication information to the terminal device, where the first indication information is used to instruct the terminal device to perform initial BWP reselection based on initial BWP reselection criterion 1 or initial BWP reselection criterion 2 .

Optionally, in some embodiments, the first indication information may be carried in a broadcast message, or may also be carried in RRC signaling, or may also be carried in other downlink messages or signaling. Not limited.

For example, a reselection criterion indication field may be included in the broadcast message, and the value of the reselection criterion indication field indicates which reselection criterion the terminal device performs initial BWP reselection based on.

Indication mode 2: The network device may implicitly indicate to the terminal device which reselection criterion is used to perform initial BWP reselection.

In some embodiments, the network device may indicate to the terminal device whether the first channel quality range is configured to the terminal device to perform initial BWP reselection based on initial BWP reselection criterion 1 or initial BWP reselection criterion 2 .

For example, not configuring the first channel quality range instructs the terminal device to perform initial BWP reselection based on initial BWP reselection criterion 1, and configuring the first channel quality range instructs the terminal device to perform initial BWP reselection criterion based on initial BWP reselection criterion 2 A reselection of the initial BWP is performed.

In other embodiments, the network device may also instruct the terminal device based on which reselection criterion to perform initial BWP reselection through whether the broadcast message includes a reselection criterion indication field.

For example, the broadcast message includes a reselection criterion indication field, instructing the terminal device to perform initial BWP reselection based on the first reselection criterion, and when the broadcast message does not include the reselection criterion indication field, instructs the terminal device to perform reselection based on the second reselection criterion. Reselection of the initial BWP, or vice versa.

The indication manners exemplified above are only examples, of course, the network device may also use other manners to indicate the reselection criteria, and the present application is not limited to this.

Therefore, in this embodiment of the present application, the terminal device may perform initial BWP reselection based on the channel qualities of multiple initial BWPs, which is beneficial for switching to other initial BWPs when the channel quality of the currently residing initial BWP deteriorates so that the communication success rate of the terminal device can be guaranteed.

FIG. 6 is a schematic flowchart of a method for reselection of an initial bandwidth part BWP according to another embodiment of the present application. The method 300 may be executed by a network device in the communication system shown in FIG. 1 . As shown in FIG. 6 , the Method 300 may include at least some of the following:

S310: The network device sends BWP reselection configuration information to the terminal device, where the BWP reselection configuration information is used by the terminal device to determine a target initial BWP for reselection among multiple initial BWPs.

Optionally, in some embodiments, the BWP reselection configuration information includes at least one of the following:

a first threshold for the number of measurement reference signals, representing the maximum number of measurement reference signals used to determine the channel quality of the initial BWP;

Optionally, in some embodiments, the BWP reselection configuration information is configured through a broadcast message or radio resource control RRC signaling.

Optionally, in some embodiments, the method 300 further includes:

The network device sends initial BWP configuration information to the terminal device, where the initial BWP configuration information is used to configure multiple downlink initial BWPs and multiple uplink initial BWPs, wherein the multiple downlink initial BWPs and the multiple uplink initial BWPs are one. One correspondence, each downlink initial BWP is associated with at least one measurement reference signal with the corresponding uplink initial BWP.

Optionally, in some embodiments, the initial BWP configuration information is configured through a broadcast message or RRC signaling.

Optionally, in some embodiments, the method 300 further includes:

The network device instructs the terminal device how to reselect an initial BWP among the plurality of initial BWPs.

Optionally, in some embodiments, the network device instructs the terminal device to reselect the initial BWP among the plurality of initial BWPs, including:

The network device sends a first message to the terminal device, where the first message includes first indication information, where the first indication information is used to instruct the terminal device to maximize the channel quality in the multiple initial BWPs. The optimal initial BWP is used as the target initial BWP, or the initial BWP with the largest number of measurement reference signals satisfying the first condition among the initial BWPs satisfying the first channel quality range is used as the target initial BWP.

Optionally, in some embodiments, the network device indicates to the terminal device whether to use the initial BWP with the best channel quality among the plurality of initial BWPs as the target initial BWP or not by configuring the first channel quality range. Among the initial BWPs that satisfy the first channel quality range, the initial BWP with the largest number of measurement reference signals that satisfy the first condition is used as the target initial BWP.

Optionally, in some embodiments, the first condition includes that the measurement result of the measurement reference signal is greater than a first channel quality threshold, where the first channel quality threshold represents a measurement reference used to determine the channel quality of the initial BWP The minimum channel quality threshold that the signal needs to meet.

The method embodiments of the present application are described in detail above with reference to FIGS. 3 to 6 , and the device embodiments of the present application are described in detail below with reference to FIGS. 7 to 11 . It should be understood that the device embodiments and the method embodiments correspond to each other, and are similar to For the description, refer to the method embodiment.

FIG. 7 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in FIG. 7, the terminal device 400 includes:

The processing unit 410 is configured to determine a target initial BWP among the plurality of initial BWPs according to the channel quality of each initial BWP among the plurality of initial BWPs, wherein the plurality of initial BWPs include the currently activated terminal equipment. The first initial BWP;

If the target initial BWP is not the first initial BWP, switch from the first initial BWP to the target initial BWP.

Optionally, in some embodiments, the processing unit 410 is specifically configured to:

In the at least one measurement result of the measurement reference signal associated with each initial BWP, select at least one target measurement result;

The channel quality of each initial BWP is determined according to the at least one target measurement result.

According to the first channel quality threshold and/or the first measurement reference signal quantity threshold, in the at least one measurement result, the at least one target measurement result is selected;

The first channel quality threshold represents a minimum channel quality threshold that needs to be satisfied by a measurement reference signal used to determine the channel quality of the initial BWP, and the first measurement reference signal number threshold represents a threshold used to determine the channel quality of the initial BWP. Maximum number of measurement reference signals.

Optionally, in some embodiments, when the terminal device is not configured with the first channel quality threshold, the at least one target measurement result includes the largest measurement result among the at least one measurement result; or

When the largest measurement result in the at least one measurement result is less than or equal to the first channel quality threshold, the at least one target measurement result includes the largest measurement result in the at least one measurement result; or

When the number threshold of the first measurement reference signal is not configured on the terminal device, the at least one target measurement result includes the largest measurement result among the at least one measurement result; or

When the terminal device is configured with the first channel quality threshold and the first measurement reference signal quantity threshold, the at least one target measurement result includes that the channel quality in the measurement reference signal associated with each initial BWP is higher than the The measurement result of the measurement reference signals with the highest channel quality among the measurement reference signals of the first channel quality threshold and whose number does not exceed the number threshold of the first measurement reference signal.

Taking the linear average of the at least one target measurement result as the channel quality of each initial BWP.

Optionally, in some embodiments, the first channel quality threshold is configured through a broadcast message or RRC signaling;

The threshold of the number of the first measurement reference signals is configured through broadcast messages or RRC signaling.

Optionally, in some embodiments, the processing unit 410 is further configured to:

If the channel quality of at least one initial BWP in the plurality of initial BWPs is higher than the channel quality of the first initial BWP within the first time period, the target initial BWP is determined according to the channel quality of the at least one initial BWP. BWP.

The initial BWP with the best channel quality among the at least one initial BWP is used as the target initial BWP.

The target initial BWP is determined according to the channel quality of the at least one initial BWP and a first channel quality range, where the first channel quality range represents the maximum difference value from the channel quality of the initial BWP with the best channel quality.

determining an initial BWP with the best channel quality among the at least one initial BWP as a reference initial BWP;

determining at least one candidate initial BWP whose channel quality difference from the reference initial BWP is within the first channel quality range;

The target initial BWP is determined among the at least one candidate BWP.

determining the number of measurement reference signals that satisfy the first condition in at least one measurement reference signal associated with each candidate BWP;

A candidate initial BWP with the largest number of measurement reference signals satisfying the first condition is determined as the target initial BWP.

Optionally, in some embodiments, the first channel quality range is configured through broadcast messages or RRC signaling.

According to the instruction of the network device, a manner of reselection of an initial BWP among the plurality of initial BWPs is determined.

Optionally, in some embodiments, the terminal device 400 further includes:

A communication unit, configured to receive first indication information of the network device, where the first indication information is used to instruct the terminal device to use the initial BWP with the best channel quality among the plurality of initial BWPs as the target initial BWP or Taking the initial BWP with the largest number of measurement reference signals that satisfy the first condition among the initial BWPs that satisfy the first channel quality range as the target initial BWP;

The processing unit 410 is further configured to: determine a manner of reselecting the initial BWP according to the content indicated by the first indication information.

According to whether the network device configures the first channel quality range, it is determined whether the terminal device uses the initial BWP with the best channel quality among the multiple initial BWPs as the target initial BWP or the initial BWP that satisfies the first channel quality range The initial BWP with the largest number of measurement reference signals satisfying the first condition is taken as the target initial BWP.

Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip. The aforementioned processing unit may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 400 are respectively for realizing the method shown in FIG. 3 . The corresponding process of the terminal device in 200 is not repeated here for brevity.

FIG. 8 shows a schematic block diagram of a network device 500 according to an embodiment of the present application. As shown in Figure 8, the network device 500 includes:

The communication unit 510 is configured to send BWP reselection configuration information to a terminal device, where the BWP reselection configuration information is used by the terminal device to determine a target initial BWP for reselection among multiple initial BWPs.

Optionally, the BWP reselection configuration information is configured through a broadcast message or radio resource control RRC signaling.

Optionally, in some embodiments, the communication unit 510 is further configured to:

Send the initial BWP configuration information to the terminal device, where the initial BWP configuration information is used to configure multiple downlink initial BWPs and multiple uplink initial BWPs, wherein the multiple downlink initial BWPs and the multiple uplink initial BWPs are in one-to-one correspondence, and each At least one measurement reference signal is associated with each downlink initial BWP and the corresponding uplink initial BWP.

Instructing the terminal device how to reselect the initial BWP among the plurality of initial BWPs.

Optionally, in some embodiments, the communication unit 510 is specifically configured to:

Send a first message to the terminal device, where the first message includes first indication information, where the first indication information is used to instruct the terminal device to use the initial BWP with the best channel quality among the plurality of initial BWPs As the target initial BWP, the initial BWP with the largest number of measurement reference signals satisfying the first condition among the initial BWPs satisfying the first channel quality range is also used as the target initial BWP.

Optionally, in some embodiments, the first condition includes that the measurement result of the measurement reference signal is greater than the first channel quality threshold, and the first condition includes that the measurement result of the measurement reference signal is greater than the first channel quality threshold, wherein, The first channel quality threshold represents a minimum channel quality threshold that needs to be satisfied by the measurement reference signal used for determining the channel quality of the initial BWP.

It should be understood that the network device 500 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of the various units in the terminal device 500 are respectively for realizing the method shown in FIG. 8 . The corresponding process of the network device in 300 is not repeated here for brevity.

FIG. 9 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application. The communication device 600 shown in FIG. 9 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 9 , the communication device 600 may further include a memory 620 . The processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments of the present application.

The memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .

Optionally, as shown in FIG. 9 , the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by a device.

Among them, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of the antennas may be one or more.

Optionally, the communication device 600 may specifically be the network device in this embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 600 may specifically be the mobile terminal/terminal device of the embodiments of the present application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, for the sake of brevity. , and will not be repeated here.

FIG. 10 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in FIG. 10 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in this embodiment of the present application.

Optionally, as shown in FIG. 10 , the chip 700 may further include a memory 720 . The processor 710 may call and run a computer program from the memory 720 to implement the methods in the embodiments of the present application.

The memory 720 may be a separate device independent of the processor 710 , or may be integrated in the processor 710 .

Optionally, the chip 700 may further include an input interface 730 . The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740 . The processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. For brevity, here No longer.

It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.

FIG. 11 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in FIG. 11 , the communication system 900 includes a terminal device 910 and a network device 920 .

The terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here. .

It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

Embodiments of the present application further provide a computer-readable storage medium for storing a computer program.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and are not repeated here for brevity.

Embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. Repeat.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, details are not repeated here.

The embodiments of the present application also provide a computer program.

Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity. , and will not be repeated here.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program is run on the computer, the mobile terminal/terminal device implements the various methods of the computer program in the embodiments of the present application. The corresponding process, for the sake of brevity, will not be repeated here.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A method for reselection of initial bandwidth part BWP, comprising:

The terminal device determines a target initial BWP among the plurality of initial BWPs according to the channel quality of each initial BWP in the plurality of initial BWPs, wherein the plurality of initial BWPs include the first initial BWP currently activated by the terminal device ;

If the target initial BWP is not the first initial BWP, the terminal device switches from the first initial BWP to the target initial BWP.
The method according to claim 1, wherein the method further comprises:

In the at least one measurement result of the measurement reference signal associated with each initial BWP, select at least one target measurement result;

The channel quality of each initial BWP is determined according to the at least one target measurement result.
The method according to claim 2, wherein the selecting at least one target measurement result from at least one measurement result of the measurement reference signal associated with each initial BWP comprises:

According to the first channel quality threshold and/or the first measurement reference signal quantity threshold, in the at least one measurement result, the at least one target measurement result is selected;

The first channel quality threshold represents a minimum channel quality threshold that needs to be satisfied by a measurement reference signal used to determine the channel quality of the initial BWP, and the first measurement reference signal number threshold represents a threshold used to determine the channel quality of the initial BWP. Maximum number of measurement reference signals.
The method of claim 3, wherein:

When the terminal device is not configured with the first channel quality threshold, the at least one target measurement result includes the largest measurement result among the at least one measurement result; or

When the largest measurement result in the at least one measurement result is less than or equal to the first channel quality threshold, the at least one target measurement result includes the largest measurement result in the at least one measurement result; or

When the number threshold of the first measurement reference signal is not configured on the terminal device, the at least one target measurement result includes the largest measurement result among the at least one measurement result; or

When the terminal device is configured with the first channel quality threshold and the first measurement reference signal quantity threshold, the at least one target measurement result includes that the channel quality in the measurement reference signal associated with each initial BWP is higher than the The measurement result of the measurement reference signals with the highest channel quality among the measurement reference signals of the first channel quality threshold and whose number does not exceed the number threshold of the first measurement reference signal.
The method according to any one of claims 2-4, wherein the determining the channel quality of each initial BWP according to the at least one target measurement result comprises:

Taking the linear average of the at least one target measurement result as the channel quality of each initial BWP.
The method according to any one of claims 2-5, wherein the first channel quality threshold is configured through a broadcast message or RRC signaling;

The threshold of the number of the first measurement reference signals is configured through broadcast messages or RRC signaling.
The method according to any one of claims 1-6, wherein the terminal device determines a target initial BWP among the plurality of initial BWPs according to the channel quality of each initial BWP among the plurality of initial BWPs ,include:

If the channel quality of at least one initial BWP in the plurality of initial BWPs is higher than the channel quality of the first initial BWP within the first time period, the target initial BWP is determined according to the channel quality of the at least one initial BWP. BWP.
The method according to claim 7, wherein the determining the target initial BWP according to the channel quality of the at least one initial BWP comprises:

The initial BWP with the best channel quality among the at least one initial BWP is used as the target initial BWP.
The method according to claim 7, wherein the determining the target initial BWP according to the channel quality of the at least one initial BWP comprises:

The target initial BWP is determined according to the channel quality of the at least one initial BWP and a first channel quality range, where the first channel quality range represents the maximum difference value from the channel quality of the initial BWP with the best channel quality.
The method according to claim 9, wherein, determining the target initial BWP according to the channel quality of the at least one initial BWP and the first channel quality range, comprising:

determining an initial BWP with the best channel quality among the at least one initial BWP as a reference initial BWP;

determining at least one candidate initial BWP whose channel quality difference from the reference initial BWP is within the first channel quality range;

The target initial BWP is determined among the at least one candidate BWP.
The method according to claim 10, wherein the determining the target BWP in the at least one candidate BWP comprises:

determining the number of measurement reference signals that satisfy the first condition in at least one measurement reference signal associated with each candidate BWP;

A candidate initial BWP with the largest number of measurement reference signals satisfying the first condition is determined as the target initial BWP.
The method according to any one of claims 9-11, wherein the first channel quality range is configured through a broadcast message or RRC signaling.
The method according to any one of claims 1-12, wherein the method further comprises:

The terminal device determines, according to the instruction of the network device, a manner of reselecting an initial BWP among the plurality of initial BWPs.
The method according to claim 13, wherein, according to an instruction of a network device, the terminal device determines a method for reselection of an initial BWP among the plurality of initial BWPs, comprising:

The terminal device receives the first indication information of the network device, where the first indication information is used to instruct the terminal device to use the initial BWP with the best channel quality among the plurality of initial BWPs as the target initial BWP or to use the initial BWP with the best channel quality as the target initial BWP. Among the initial BWPs that satisfy the first channel quality range, the initial BWP with the largest number of measurement reference signals that satisfy the first condition is used as the target initial BWP;

The terminal device determines a manner of reselecting the initial BWP according to the content indicated by the first indication information.
The method according to claim 13, wherein, according to an instruction of a network device, the terminal device determines a method for reselection of an initial BWP among the plurality of initial BWPs, comprising:

The terminal device determines, according to whether the network device configures the first channel quality range, whether the terminal device uses the initial BWP with the best channel quality among the multiple initial BWPs as the target initial BWP or will satisfy the first channel quality Among the initial BWPs in the range, the initial BWP with the largest number of measurement reference signals satisfying the first condition is used as the target initial BWP.
The method according to claim 11 or 15, wherein the first condition comprises that the measurement result of the measurement reference signal is greater than a first channel quality threshold, wherein the first channel quality threshold represents a signal used to determine the initial BWP The channel quality measurement reference signal needs to meet the minimum channel quality threshold.
A method for reselection of initial bandwidth part BWP, comprising:

The network device sends BWP reselection configuration information to the terminal device, where the BWP reselection configuration information is used by the terminal device to determine a target initial BWP for reselection among multiple initial BWPs.
The method according to claim 17, wherein the BWP reselection configuration information comprises at least one of the following:

the first channel quality threshold, representing the minimum channel quality threshold that the measurement reference signal used to determine the channel quality of the initial BWP needs to meet;

a first threshold for the number of measurement reference signals, representing the maximum number of measurement reference signals used to determine the channel quality of the initial BWP;

The first channel quality range, which represents the maximum difference from the channel quality of the initial BWP with the best channel quality.
The method according to claim 17 or 18, wherein the BWP reselection configuration information is configured through a broadcast message or RRC signaling.
The method according to any one of claims 17-19, wherein the method further comprises:

The network device sends initial BWP configuration information to the terminal device, where the initial BWP configuration information is used to configure multiple downlink initial BWPs and multiple uplink initial BWPs, wherein the multiple downlink initial BWPs and the multiple uplink initial BWPs are one. One correspondence, each downlink initial BWP is associated with at least one measurement reference signal with the corresponding uplink initial BWP.
The method according to claim 20, wherein the initial BWP configuration information is configured through a broadcast message or RRC signaling.
The method according to any one of claims 17-21, wherein the method further comprises:

The network device instructs the terminal device how to reselect an initial BWP among the plurality of initial BWPs.
The method according to claim 22, wherein the network device instructing the terminal device to reselect an initial BWP among the plurality of initial BWPs comprises:

The network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to use the initial BWP with the best channel quality among the plurality of initial BWPs as the target initial BWP or to use the initial BWP with the best channel quality as the target initial BWP. Among the initial BWPs that satisfy the first channel quality range, the initial BWP with the largest number of measurement reference signals that satisfy the first condition is taken as the target initial BWP.
The method according to claim 22, wherein the network device instructs the terminal device to use the initial BWP with the best channel quality among the plurality of initial BWPs as the target through whether to configure the first channel quality range The initial BWP is also the initial BWP that has the largest number of measurement reference signals that satisfy the first condition among the initial BWPs that satisfy the first channel quality range as the target initial BWP.
The method according to claim 23 or 24, wherein the first condition includes that the measurement result of the measurement reference signal is greater than the first channel quality threshold, and the first condition includes that the measurement result of the measurement reference signal is greater than the first channel A quality threshold, where the first channel quality threshold represents a minimum channel quality threshold that needs to be satisfied by the measurement reference signal used to determine the channel quality of the initial BWP.
A terminal device, characterized in that it includes:

A processing unit, configured to determine a target initial BWP among the plurality of initial BWPs according to the channel quality of each initial BWP in the plurality of initial BWPs, wherein the plurality of initial BWPs include the first BWP currently activated by the terminal device an initial BWP;

If the target initial BWP is not the first initial BWP, switch from the first initial BWP to the target initial BWP.
A network device, characterized in that it includes:

A communication unit, configured to send BWP reselection configuration information to a terminal device, where the BWP reselection configuration information is used by the terminal device to determine a target initial BWP for reselection among multiple initial BWPs.
A terminal device, characterized in that it comprises: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 16. one of the methods described.
A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 16 .
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 16.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 1 to 16.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 16.
A network device, characterized in that it comprises: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 17 to 25. one of the methods described.
A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 17 to 25.
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 17 to 25.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 17 to 25.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 17 to 25.