CN111615162A

CN111615162A - Bandwidth part BWP switching method and device

Info

Publication number: CN111615162A
Application number: CN201910580249.7A
Authority: CN
Inventors: 吴昱民
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-09-01

Abstract

The embodiment of the invention discloses a method and equipment for switching BWP (bandwidth partial protocol), which relate to the technical field of communication and are used for solving the problem that in the prior art, when BWP (broadband protocol) switching is executed by UE (user equipment), BWP switching is executed by the UE in failure because a target BWP (broadband protocol) may be already occupied by other UE (user equipment). The method comprises the following steps: and switching the currently activated first target BWP to a second target BWP according to at least one congestion measurement result, wherein the at least one congestion measurement result is a congestion measurement result of at least one BWP, and the second target BWP is a BWP of the at least one BWP, and the congestion measurement result does not meet the congestion condition. The scheme is particularly applied to the BWP switching scene.

Description

Bandwidth part BWP switching method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for BWP handover of a bandwidth part.

Background

In The fifth Generation mobile Communication System (5G), a User Equipment (UE) may only support a relatively small operating bandwidth (e.g. 5MHz), while a cell of a network device may support a relatively large bandwidth (e.g. 100MHz), and a small bandwidth part (BWP) in which The UE operates is a bandwidth part (bandwidth part).

Currently, a network device may configure one or more BWPs for a UE for one cell, but the UE can only activate one BWP at the same time. Also in many cases (e.g., the network device instructs the UE to perform BWP handover, the UE autonomously performs BWP handover, etc.), the UE may need to perform BWP handover, i.e., activate a new BWP (hereinafter referred to as a target BWP) and deactivate the currently activated BWP.

However, when the target BWP is the unlicensed band, since the use of the unlicensed band is fairly contended by each UE, the target BWP may already be occupied by other UEs during the BWP handover performed by the UE, so that the UE cannot access the target BWP, i.e., the UE fails to perform the BWP handover.

Disclosure of Invention

Embodiments of the present invention provide a method and an apparatus for switching BWP in a bandwidth part, so as to solve the problem in the prior art that, in the process of performing BWP switching by a UE, the target BWP may already be occupied by other UEs, which results in failure of performing BWP switching by the UE.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a BWP handover method, which is applied to a UE, and the method includes: and switching the currently activated first target BWP to a second target BWP according to at least one congestion measurement result, wherein the at least one congestion measurement result is a congestion measurement result of at least one BWP, and the second target BWP is a BWP of the at least one BWP, and the congestion measurement result does not meet the congestion condition.

In a second aspect, an embodiment of the present invention provides a BWP handover method, which is applied to a network device, and the method includes: and sending first indication information to the User Equipment (UE), wherein the first indication information is used for indicating whether the UE performs BWP congestion assessment before switching BWP.

In a third aspect, an embodiment of the present invention provides a UE, where the UE includes: a switching module; the switching module is configured to switch a currently activated first target BWP to a second target BWP according to at least one congestion measurement result, where the at least one congestion measurement result is a congestion measurement result of at least one BWP, and the second target BWP is a BWP in the at least one BWP for which the congestion measurement result does not satisfy a congestion condition.

In a fourth aspect, an embodiment of the present invention provides a network device, where the network device includes: a sending module; the sending module is configured to send first indication information to the UE, where the first indication information is used to indicate whether the UE performs BWP congestion evaluation before switching BWP.

In a fifth aspect, an embodiment of the present invention provides a UE, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the BWP switching method according to the first aspect.

In a sixth aspect, an embodiment of the present invention provides a network device, which includes a processor, a memory, and a computer program stored on the memory and executable on the processor, and when executed by the processor, the computer program implements the steps of the BWP switching method according to the second aspect.

In a seventh aspect, an embodiment of the present invention provides a communication system, where the communication system includes the UE in the third aspect and the network device in the fourth aspect; alternatively, the communication system comprises a UE as in the fifth aspect above, and a network device as in the sixth aspect above.

In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the BWP switching method in the first and second aspects.

In the embodiment of the present invention, the UE may switch the currently activated first target BWP to the second target BWP according to at least one congestion measurement result, where the at least one congestion measurement result is a congestion measurement result of at least one BWP, and the second target BWP is a BWP in the at least one BWP for which the congestion measurement result does not satisfy the congestion condition. According to the scheme, before the BWP handover is executed, the UE firstly obtains at least one congestion measurement result, then determines a second target BWP which does not meet the congestion condition according to the at least one congestion measurement result, and then switches the first target BWP to the second target BWP. In this way, the UE performs BWP congestion evaluation before performing BWP handover, so as to ensure that the currently activated BWP can be handed over to the target BWP not occupied by other UEs when performing BWP handover, thereby ensuring that the UE successfully performs BWP handover.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present invention;

fig. 2 is a flowchart of a BWP handover method according to an embodiment of the present invention;

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

fig. 4 is a third flowchart of a BWP handover method according to an embodiment of the present invention;

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

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

fig. 7 is a hardware diagram of a UE according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 9 is a hardware schematic diagram of a network device according to an embodiment of the present invention.

Detailed Description

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

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

In the description of the embodiments of the present invention, unless otherwise specified, "a plurality" means two or more, for example, a plurality of processing units means two or more processing units; plural elements means two or more elements, and the like.

The present invention provides a BWP handover method, in which a UE may handover a currently activated first target BWP to a second target BWP according to at least one congestion measurement result, where the at least one congestion measurement result is a congestion measurement result of at least one BWP, and the second target BWP is a BWP in the at least one BWP for which the congestion measurement result does not satisfy a congestion condition. According to the scheme, before the BWP handover is executed, the UE firstly obtains at least one congestion measurement result, then determines a second target BWP which does not meet the congestion condition according to the at least one congestion measurement result, and then switches the first target BWP to the second target BWP. In this way, the UE performs BWP congestion evaluation before performing BWP handover, so as to ensure that the currently activated BWP can be handed over to the target BWP not occupied by other UEs when performing BWP handover, thereby ensuring that the UE successfully performs BWP handover.

The technical scheme provided by the invention can be applied to various communication systems, such as a 5G communication system, a future evolution system, or a plurality of communication convergence systems and the like. A variety of application scenarios may be included, for example, scenarios such as Machine to Machine (M2M), D2M, macro and micro Communication, enhanced Mobile Broadband (eMBB), ultra high reliability and ultra Low Latency Communication (urrllc), and mass internet of things Communication (mtc). These scenarios include, but are not limited to: communication between the UE and the UE, communication between the network device and the network device, or communication between the network device and the UE. The embodiment of the invention can be applied to the communication between the network equipment and the UE in the 5G communication system, or the communication between the UE and the UE, or the communication between the network equipment and the network equipment.

Fig. 1 shows a schematic diagram of a possible structure of a communication system according to an embodiment of the present invention. As shown in fig. 1, the communication system includes at least one network device 100 (only one is illustrated in fig. 1) and one or more UEs 200 (only one is illustrated in fig. 1) to which each network device 100 is connected.

The at least one network device 100 may serve a Cell Group (e.g., a Master Cell Group (MCG); or a Secondary Cell Group (SCG)), where a Cell Group includes at least one Primary Cell (e.g., a Primary Cell in the Master Cell Group or a Primary Secondary Cell in the Secondary Cell Group (PSCell)), and may further include at least one Secondary Cell (e.g., a Secondary Cell in the Master Cell Group or a Secondary Cell in the Secondary Cell Group).

For example, the communication system shown in fig. 1 may be a multi-Carrier communication system, for example, a Carrier Aggregation (CA) scenario, a Dual Connectivity (DC) scenario, etc., and the embodiment of the present invention is not limited thereto.

The network device 100 may be a base station, a core network device, a transmission and Reception node (TRP), a relay station, an access Point, or the like. The network device 100 may be a Base Transceiver Station (BTS) in a Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA) network, or may be an nb (nodeb) in Wideband Code Division Multiple Access (WCDMA), or may be an eNB or enodeb (evolved nodeb) in LTE. The Network device 100 may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The network device 100 may also be a network device in a 5G communication system or a network device in a future evolution network. The words used are not to be construed as limitations of the invention.

The UE200 may be a wireless UE, which may be a device that provides voice and/or other traffic data connectivity to a user, a handheld device, computing device, or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a UE in a future 5G network or a UE in a future evolved PLMN network, etc., as well as a wired UE. A Wireless UE may communicate with one or more core networks via a Radio Access Network (RAN), and may be a Mobile UE such as a Mobile telephone (or "cellular" telephone) and a computer with a Mobile UE, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted Mobile device that exchanges languages and/or data with the RAN, as well as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like, and may also be a Mobile device, a terminal device, an Access terminal device, a Wireless Communication device, a terminal device unit, a terminal device Station, a Mobile Station (Mobile Station), a Station, a Station, and the like, Mobile Station (Mobile), Remote Station (Remote Station), Remote Station, Remote Terminal (Remote Terminal), Subscriber Unit (Subscriber Unit), Subscriber Station (Subscriber Station), User Agent (User Agent), Terminal device, etc. As an example, in the embodiment of the present invention, fig. 1 illustrates that the UE is a mobile phone.

Currently, in the prior art, during the procedure of performing BWP handover by a UE, since a target BWP may already be occupied by other UEs, the UE may not access the target BWP, that is, the UE fails to perform BWP handover. In order to solve the above technical problem, an embodiment of the present invention provides a BWP handover method, where before performing BWP handover, a UE first obtains at least one congestion measurement result, then determines a second target BWP that does not satisfy a congestion condition according to the at least one congestion measurement result, and then switches the first target BWP to the second target BWP. In this way, the UE performs BWP congestion evaluation before performing BWP handover, so as to ensure that the currently activated BWP can be handed over to the target BWP not occupied by other UEs when performing BWP handover, thereby ensuring that the UE successfully performs BWP handover.

A BWP switching method, device and system provided in an embodiment of the present invention are described in detail below with reference to the accompanying drawings.

Based on the communication system shown in fig. 1, an embodiment of the present invention provides a BWP handover method, which may include the following step 201, as shown in fig. 2.

Step 201, the UE switches the currently activated first target BWP to the second target BWP according to at least one congestion measurement result.

The at least one congestion measurement result is a congestion measurement result of the at least one BWP, and the second target BWP is a BWP of the at least one BWP for which the congestion measurement result does not satisfy the congestion condition.

Optionally, the UE first obtains the congestion measurement result of the at least one BWP, then determines any one of the BWPs that do not satisfy the congestion condition in the congestion measurement result of the at least one BWP as the second target BWP, and switches the first target BWP to the second target BWP.

Optionally, the UE first obtains a congestion measurement result of BWP (hereinafter referred to as BWP 1), then determines whether the congestion measurement result of BWP 1 meets a congestion condition, and if the congestion measurement result of BWP 1 does not meet the congestion condition, BWP 1 is a second target BWP, and switches the first target BWP to BWP 1; otherwise, the UE obtains a congestion measurement result of BWP (hereinafter referred to as BWP 2), then determines whether the congestion measurement result of BWP 2 meets the congestion condition, if the congestion measurement result of BWP 2 does not meet the congestion condition, BWP 2 is the second target BWP, and switches the first target BWP to BWP 2; otherwise, the UE obtains a congestion measurement result of BWP (hereinafter referred to as BWP 3), then determines whether the congestion measurement result of BWP 3 meets the congestion condition, if the congestion measurement result of BWP 3 does not meet the congestion condition, BWP 3 is the second target BWP, and switches the first target BWP to BWP 3; otherwise, the above-described process is executed in a loop until determining that the BWP for which the congestion measurement result does not satisfy the congestion condition is the second target BWP, and switching the first target BWP to the second target BWP.

Specifically, switching the first target BWP to the second target BWP includes: the first target BWP is deactivated and the second target BWP is activated.

Optionally, the congestion measurement result of one BWP may include at least one of: a Received Signal Strength Indicator (RSSI) of the BWP, a Channel occupancy (CR) of the BWP, and a Channel Busy Rate (CBR) of the BWP.

In this embodiment of the present invention, the congestion measurement result of each BWP may be the same or different, and may be determined according to actual usage requirements, which is not limited in this embodiment of the present invention.

Illustratively, the congestion measurement result of BWP 1 is RSSI, the congestion measurement result of BWP 2 is CR, and the congestion measurement result of BWP 3 is RSSI and CBR.

In embodiments of the present invention, various congestion measurements are provided, so that BWP congestion assessment may be achieved from different aspects.

Optionally, the congestion condition includes at least one of: RSSI of BWP is greater than or equal to a first threshold, CR of BWP is greater than or equal to a second threshold, CBR of BWP is greater than or equal to a third threshold.

The congestion condition corresponds to the congestion measurement result of the BWP, for example, if the congestion measurement result of BWP 1 is RSSI, the corresponding congestion condition is that the RSSI of BWP is greater than or equal to the first threshold; if the congestion measurement result of BWP 2 is CR, the corresponding congestion condition is that CR of BWP is greater than or equal to the second threshold; the congestion measurement results of BWP 3 are RSSI and CBR, and the corresponding congestion conditions are RSSI of BWP greater than or equal to the first threshold and CBR of BWP greater than or equal to the third threshold.

In embodiments of the present invention, a variety of congestion conditions are provided so that BWP congestion assessment may be achieved from different aspects.

Optionally, the first threshold, the second threshold, and the third threshold are configured by the network device or specified by the communication protocol. The first threshold, the second threshold, or the third threshold may be referred to as a congestion measurement threshold value.

Illustratively, before step 201 above, the network device may configure at least one of the first threshold, the second threshold and the third threshold for the UE through Radio Resource Control (RRC) signaling.

Illustratively, the communication protocol specifies at least one of a first threshold, a second threshold, and a third threshold.

It should be noted that, in the embodiment of the present invention, at least one of the first threshold, the second threshold, and the third threshold may be configured for the UE through the network device, and at least one of the first threshold, the second threshold, and the third threshold may be specified through a communication protocol, and may be specifically determined according to actual usage requirements, which is not limited in the embodiment of the present invention. Further, the configuration of the network device for the UE and the configuration of the communication protocol may be the same (for example, the network device configures the first threshold and the third threshold for the UE, and the communication protocol specifies the first threshold and the third threshold), or may not be the same (for example, the network device configures the first threshold and the second threshold for the UE, and the communication protocol specifies the third threshold (the network device may configure one of the first threshold, the second threshold, and the third threshold for the UE, and the communication protocol specifies the other of the first threshold, the second threshold, and the third threshold), or the network device configures the first threshold and the second threshold for the UE, and the communication protocol specifies the first threshold and the third threshold).

Optionally, values of the first threshold, the second threshold, and the third threshold may be determined according to actual usage requirements, and the embodiment of the present invention is not limited.

In the embodiment of the invention, various methods for acquiring the first threshold, the second threshold and the third threshold are provided.

It should be noted that, in the embodiment of the present invention, it is not limited whether the first target BWP and the second target BWP are BWPs in the licensed band or BWPs in the unlicensed band. For example, the first target BWP may be a BWP in the licensed band or a BWP in the unlicensed band, and the second target BWP may also be a BWP in the licensed band or a BWP in the unlicensed band.

Optionally, in this embodiment of the present invention, before step 201, the network device may instruct the UE whether to perform BWP congestion evaluation before switching BWP. The UE may determine whether to perform BWP congestion evaluation prior to switching BWP based on an indication from the network device.

Exemplarily, referring to fig. 2, as shown in fig. 3, before step 201, the BWP switching method provided in the embodiment of the present invention may further include the following steps 202 to 203, where step 201 may specifically be implemented by the following step 201 a.

Step 202, the network device sends first indication information to the UE.

The first indication information is used to indicate whether the UE performs BWP congestion evaluation before switching BWP.

Illustratively, the network device may send the first indication information to the UE through RRC signaling.

For example, the first indication information may specifically include switch information, which may be used to indicate whether the UE performs BWP congestion evaluation before switching BWP. For example, the value of the indication information with the switch information of 1bit is "0" to indicate that BWP congestion evaluation needs to be performed, and the value of "1" to indicate that BWP congestion evaluation does not need to be performed.

Optionally, in this embodiment of the present invention, in a case that the first indication information indicates that the UE does not perform BWP congestion evaluation before switching the BWP, the UE may not need to perform BWP congestion evaluation before switching the BWP, for example, the UE may switch the BWP in a conventional BWP switching manner.

In the embodiment of the present invention, the network device indicates to the UE not to perform BWP congestion evaluation before switching BWP, which may be specifically implemented in the following two possible cases. In a possible case, the network device may determine that the congestion measurement result does not satisfy the BWP of the congestion condition by other means and instruct the UE to switch to the BWP (which may ensure that the UE switches to the BWP successfully), in which case, the network device may instruct the UE not to perform BWP congestion evaluation before switching to the BWP by the first indication information. In another possible scenario, to save power consumption of the UE, the network device may instruct the UE not to perform BWP congestion evaluation through the first indication information before instructing the UE to switch BWP.

Alternatively, in the case where the first indication information indicates that the UE performs BWP congestion evaluation before switching BWP, the first indication information may include a congestion condition for determining whether BWP is congested.

In this embodiment of the present invention, the network device may configure a congestion condition for the UE through the first indication information when the first indication information indicates that the UE performs BWP congestion evaluation before switching BWP (the network device may also configure a congestion condition for the UE through other indication information, which is not limited in this embodiment of the present invention). The network device may not configure the congestion condition for the UE in case the UE is instructed to perform BWP congestion evaluation before switching BWP by the first indication information. The UE obtains the congestion condition according to the congestion condition specified by the communication protocol. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, the congestion condition includes at least one of: RSSI of BWP is greater than or equal to a first threshold, CR of BWP is greater than or equal to a second threshold, CBR of BWP is greater than or equal to a third threshold. For the description of the congestion condition, reference may be made to the description of the congestion condition in step 201, and details are not described herein again.

Step 203, the UE receives the first indication information sent by the network device.

If the first indication information indicates that the UE performs BWP congestion evaluation before switching BWP, and if the first indication information indicates that the UE does not perform BWP congestion evaluation before switching BWP, the UE does not need to perform BWP congestion evaluation before switching BWP.

In the embodiment of the present invention, if the first indication information indicates that the UE performs BWP congestion evaluation before switching BWP, the BWP switching success may be guaranteed to a certain extent, and if the first indication information indicates that the UE does not perform BWP congestion evaluation before switching BWP, the UE may save power.

In step 201a, in case that the first indication information indicates that the UE performs BWP congestion evaluation before switching BWP, the UE switches the first target BWP to the second target BWP according to at least one congestion measurement result.

Optionally, in the embodiment of the present invention, the following two possible situations exist for step 201 or step 201a described above:

in a first possible case, before performing BWP handover, the network device does not have priority between N BWPs configured for the UE in the first cell (the cell in which the UE is to switch BWPs) (where the N BWPs are BWPs that the network device does not satisfy the congestion measurement result in the BWP configured for the UE in the first cell except for the first target BWP), and the UE may determine any one of the BWPs that does not satisfy the congestion measurement result as the second target BWP and switch the first target BWP to the second target BWP.

In a second possible case, before performing BWP handover, the network device provides priority to the UE between the N BWPs configured in the first cell, that is, the priority of the BWP corresponding to the handover condition (hereinafter referred to as a fifth BWP for avoiding confusion) in the N BWPs is higher than the priority of other BWPs in the N BWPs, and the UE first determines whether the congestion measurement result of the fifth BWP satisfies the congestion condition, and if the congestion measurement result of the fifth BWP does not satisfy the congestion condition, the second target BWP is the fifth BWP, and the first target BWP is handed over to the fifth BWP. In a case where the congestion measurement result of the fifth BWP satisfies the congestion condition, the UE may determine any one of BWPs, which do not satisfy the congestion measurement result, of the BWPs other than the fifth BWP among the N BWPs as the second target BWP, and switch the first target BWP to the second target BWP.

For example, the step 201 or the step 201a may be specifically realized by the following steps 201b to 201 d.

Step 201b, the UE determines whether the congestion measurement result of the first BWP satisfies the congestion condition.

The first BWP is any one BWP among the N BWPs (corresponding to the first possible case), or is the same BWP as the second BWP among the N BWPs (corresponding to the second possible case), where the second BWP is the BWP corresponding to the handover condition, the N BWPs are the BWPs except for the first target BWP among the BWPs configured by the network device, and N is a positive integer.

Optionally, the switching condition is any one of the following: the UE receives the BWP handover command, determines that an inactivity timer of the first target BWP is overtime, fails to initiate random access on the first target BWP, and fails to connect on the first target BWP.

The handover condition is that the UE receives a BWP handover command sent by the network device, where the BWP handover command is used to instruct the UE to handover from the first target BWP to the third target BWP, and then the first BWP is the third target BWP.

Wherein the handover condition is that the UE determines that an inactivity timer of the first target BWP has expired. The network device configures a BWP Inactivity Timer (Inactivity Timer) for the first target BWP, and the UE starts the Inactivity Timer when activating the first target BWP. If the inactivity timer expires, the UE is triggered to switch from the first target BWP to the default BWP (default BWP) configured in the network, that is, the first BWP is the default BWP.

Wherein the handover condition is that the UE fails to initiate random access on the first target BWP. For example, if the UE initiates random access on the first target BWP but the first target BWP has no random access resource, the UE is triggered to switch from the first target BWP to the initial BWP (initial BWP), i.e. the first BWP is the initial BWP. And after the UE accesses the first cell, the first activated BWP is the initial BWP.

And triggering the UE to switch from the first target BWP to other BWPs if the switching condition is that the UE fails to connect at the first target BWP. In this case, the UE may designate a handover from the first target BWP to the fourth target BWP, and the second target BWP is the fourth target BWP; the UE may also not specify the new BWP to which to switch, i.e. there is no priority between the N BWPs.

In the embodiment of the present invention, a plurality of handover conditions are described, and the handover conditions correspond to the case where N BWPs have priority.

Optionally, in this embodiment of the present invention, the connection failure may include at least one of the following: switching failure, secondary cell group switching failure, radio link failure and target times larger than or equal to a fourth threshold; the target number of times is the number of consecutive failures of the UE to perform listen before talk LBT detection.

The connection Failure is Handover Failure (HOF), and specifically, when the UE executes a Handover command for handing over a master cell group (a master cell in the master cell group), the timer T304 times out.

The connection Failure is an SCG change Failure (SCG change Failure), and specifically, when the UE executes a handover command for switching an auxiliary cell group (a primary and an auxiliary cell in the auxiliary cell group), the timer T307 times out.

The connection Failure is a Radio Link Failure (RLF), and may specifically be at least one of the following four conditions:

in the first case, in a Long Term Evolution (LTE) system or a 5G new air interface (NR) system, the UE has a Radio Link Monitor (RLM) function. Taking the RLM function in the LTE system as an example, the UE monitors the radio link by measuring a Signal-to-interference and noise ratio (SINR) of a Cell Reference Signal (CRS) of a Physical Downlink Control Channel (PDCCH). When the measured CRS reference signal of the PDCCH part is lower than a target threshold value, the wireless link is determined to be out-of-synchronization (out-of-sync), the physical layer of the UE informs the UE of an out-of-sync indication at a higher layer (RRC layer), and if the RRC layer continuously receives N out-of-sync indications, the UE starts a Timer (Timer) T310. If the timer T310 runs overtime, the UE judges that RLF occurs in the corresponding cell.

In the second case, when a Radio Link Control (RLC) layer of the UE reaches a maximum retransmission number, the UE determines that RLF occurs.

In the third case, the UE determines that RLF occurs when a Random Access Channel (RACH) reaches a maximum number of Random Access attempts.

In the fourth case, the UE determines that the RLF occurs when a beam failure or a beam recovery procedure fails.

Wherein, the connection failure is that the target frequency is greater than or equal to a fourth threshold, and the target frequency is the frequency of continuous failure of Listen Before Talk (Listen-Before-Talk, LBT) detection performed by the UE. That is, the connection failure is UE uplink data transmission duration LBTFailure, which may be referred to as uplink congestion failure.

In the embodiment of the present invention, a variety of connection failures that may occur in the first target BWP are described in detail.

Step 201c, under the condition that the congestion measurement result of the first BWP is determined not to satisfy the congestion condition, the UE switches the first target BWP to the first BWP.

The second target BWP is the first BWP.

In the case where the N BWPs have no priority, the UE switches the first target BWP to any one of the N BWPs if it is determined that the congestion measurement result of the any one BWP does not satisfy the congestion condition.

In the case where the N BWPs have priority, the UE switches the first target BWP to the BWP corresponding to the switching condition if it is determined that the congestion measurement result of the BWP corresponding to the switching condition does not satisfy the congestion condition among the N BWPs.

Step 201d, under the condition that the congestion measurement result of the first BWP is determined to satisfy the congestion condition, the UE switches the first target BWP to the third BWP according to the congestion measurement results of other BWPs.

The other BWPs are BWPs of the N BWPs except the first BWP, the third BWP is the BWP of the other BWPs, and the second target BWP is the third BWP.

Regardless of whether there are N BWPs with or without priority, in a case where it is determined that the congestion measurement result of the first BWP satisfies the congestion condition, the UE determines, as the second target BWP, any one of BWPs (third BWP) whose congestion measurement results do not satisfy the congestion condition among the other BWPs except the first BWP among the N BWPs, and switches the first target BWP to the third BWP.

Illustratively, the network device configures four BWPs, BWP 1, BWP 2, BWP 3, and BWP 4, for the UE in the first cell, where BWP 1 is the first target BWP. In the case where BWP 2, BWP 3, and BWP 4 have no priority, the UE may determine any one of BWPs, whose congestion measurement results do not satisfy the congestion condition, among BWP 2, BWP 3, and BWP 4 as the second target BWP, e.g., if the congestion measurement results of BWP 2 and BWP 3 do not satisfy the congestion condition and the congestion measurement result of BWP 4 satisfies the congestion condition, the UE may determine any one of BWP 2 and BWP 3 as the second target BWP. If BWP 2, BWP 3, and BWP 4 have priority, for example, BWP 3 is the BWP corresponding to the handover condition, the UE first determines whether the congestion measurement result of BWP 3 satisfies the congestion condition, if the congestion measurement result of BWP 3 does not satisfy the congestion condition, BWP 3 is the second target BWP, and if the congestion measurement result of BWP 3 satisfies the congestion condition, the UE may determine any one of BWPs with congestion measurement results that do not satisfy the congestion condition among BWP 2 and BWP 4 as the second target BWP, for example, BWP 2 does not satisfy the congestion condition, BWP 2 is the second target BWP.

In the embodiment of the present invention, how to implement the UE to switch the first target BWP to the second target BWP according to at least one congestion measurement result is described for the N BWPs with priority and without priority.

Optionally, in this embodiment of the present invention, when the congestion measurement result of the BWP corresponding to the handover condition satisfies the congestion condition, or when the congestion measurement results of the N BWPs all satisfy the congestion condition, the UE may determine that the first cell fails to be congested, not perform BWP handover, and perform the target action with respect to the first cell.

Exemplarily, with reference to fig. 3, as shown in fig. 4, after step 203, the BWP switching method provided in the embodiment of the present invention may further include the following step 204.

And 204, executing the target action aiming at the first cell under the condition that the first condition is met.

The first cell is a cell in which the BWP to be switched is determined by the UE (i.e. the first cell is a cell in which the first target BWP and the N BWPs are located), and the target action is at least one of the first action and the second action.

Wherein the first condition includes a first sub-condition or a second sub-condition, the first sub-condition is that a congestion measurement result of a fourth BWP satisfies a congestion condition, the fourth BWP is the same BWP as the second BWP among the N BWPs, and the second BWP is the BWP corresponding to the handover condition; the second sub-condition is that the congestion measurement result of each BWP in the N BWPs satisfies the congestion condition, where the N BWPs are the BWPs except the first target BWP in the BWPs configured by the network device, and N is a positive integer; the first action is to trigger a connection reestablishment process, and the second action is to send congestion failure indication information to the network equipment, wherein the congestion failure indication information is used for indicating that the first cell has congestion failure.

In the embodiment of the present invention, the connection reestablishment process may refer to any related technology, which is not described herein again.

It should be noted that the second action is specifically to send congestion failure indication information to the network device through the second cell, where the second cell is any cell that does not have a connection failure (in this embodiment of the present invention, the connection failure may include at least one of a handover failure, a handover failure of the secondary cell group, a radio link failure, and a congestion failure) in the master cell group and the secondary cell group of the UE except the first cell.

In this embodiment of the present invention, the congestion failure indication information may include the at least one congestion measurement result, and may also include other contents, which may be specifically determined according to actual usage requirements, and this embodiment of the present invention is not limited.

Illustratively, in a case where a congestion measurement result of BWP corresponding to the handover condition satisfies the congestion condition, the UE performs at least one of the following; triggering a connection reestablishment process, and sending congestion failure indication information to the network equipment.

Illustratively, the UE performs at least one of the following in case that the congestion measurement results of the N BWPs satisfy the congestion condition, regardless of whether the N BWPs have priority scores: triggering a connection reestablishment process, and sending congestion failure indication information to the network equipment.

In the embodiment of the invention, the target action is executed aiming at the first cell under the condition that the first condition is met. So that the UE can perform at least one of the following in case that successful BWP handover cannot be guaranteed: triggering a connection reestablishment process, and sending congestion failure indication information to the network equipment.

Optionally, in this embodiment of the present invention, the UE may further determine which target action to perform for the first cell according to which cell in the master cell group and the secondary cell group the first cell is, and whether connection failure occurs in other cells in the master cell group and the secondary cell group.

Illustratively, the step 204 can be specifically realized by the step 204a described below.

Step 204a, when the first condition and the second condition are satisfied, executing the target action for the first cell.

Wherein, when the second condition is a third sub-condition or a fourth sub-condition, the target action is at least one of the first action and the second action; the third sub-condition is that the first cell is a primary cell of a primary cell group of the UE; the fourth sub-condition is that the first cell is any cell of the master cell group, and other cells of the master cell group all have connection failure; when the second condition is a fifth sub-condition, a sixth sub-condition or a seventh sub-condition, the target action is taken as a second action; the fifth sub-condition is that the first cell is any auxiliary cell of the main cell group; the sixth sub-condition is that the first cell is any auxiliary cell or main auxiliary cell of the auxiliary cell group of the UE; the seventh sub-condition is that the first cell is any cell of the secondary cell group, and connection failure occurs in other cells of the secondary cell group.

Illustratively, in a case where the first cell fails to be congested and the first cell is a primary cell of a primary cell group of the UE, the UE performs at least one of: triggering a connection reestablishment process, and sending congestion failure indication information to the network equipment.

Illustratively, in the case that the first cell has congestion failure, the first cell is any cell of the master cell group, and connection failure occurs in all other cells of the master cell group, the UE performs at least one of the following: triggering a connection reestablishment process, and sending congestion failure indication information to the network equipment.

Illustratively, in the case that the first cell has congestion failure and is any secondary cell of the primary cell group, the UE sends congestion failure indication information to the network device.

Illustratively, in the case that the first cell has congestion failure and is any secondary cell or primary and secondary cells of the secondary cell group of the UE, the UE sends congestion failure indication information to the network device.

Illustratively, the UE sends congestion failure indication information to the network device when a congestion failure occurs in the first cell, the first cell is any cell in the secondary cell group, and connection failures occur in all other cells in the secondary cell group.

In the embodiment of the present invention, when a congestion failure occurs in a first cell, a congestion failure process for the first cell is further determined for a case where the first cell is different types of cells in a primary cell group and a secondary cell group of a UE, and whether connection failures occur in other cells.

Optionally, by triggering connection reestablishment, congestion failure of the first cell may be processed, and connection failure of other cells may also be processed at the same time.

Optionally, when the target action is the second action, the network device receives congestion failure indication information sent by the UE, where the congestion failure indication information is used to indicate that the first cell fails to be congested, and the first cell is a cell to which the UE is to switch the BWP.

For example, in the case that the target action is the second action, as shown in fig. 5 in conjunction with fig. 4, after step 204, the BWP switching method provided in the embodiment of the present invention may further include step 205 described below.

Step 205, the network device receives congestion failure indication information sent by the UE.

The congestion failure indication information is used for indicating that the first cell fails to be congested, and the first cell is a cell to be switched to BWP by UE.

After the network device receives the congestion failure indication information, the network device determines that the UE has congestion failure according to the congestion failure indication information, and then the network device may configure at least one congestion-free BWP (hereinafter referred to as a sixth BWP) for the UE in the first cell (so that the UE may switch the first target BWP to the sixth BWP), or the network device may send a cell switch command to the UE, where the cell switch command is used to instruct the UE to switch from the first cell to a third cell, and the third cell is a cell in which the BWP is not congested (so that the UE may complete work in the third cell that is not completed in the first cell).

In the embodiment of the present invention, when the target action is the second action, the network device receives the congestion failure indication information sent by the UE, and can process the congestion failure of the first cell according to the congestion failure indication information, and also can process the connection failure of other cells.

Fig. 6 shows a UE 300 according to an embodiment of the present invention, where the UE 300 includes: the switching module 301; a switching module 301, configured to switch a currently activated first target BWP to a second target BWP according to at least one congestion measurement result, where the at least one congestion measurement result is a congestion measurement result of the at least one BWP, and the second target BWP is a BWP in the at least one BWP for which the congestion measurement result does not satisfy a congestion condition.

Optionally, the congestion measurement result of one BWP includes at least one of: the received signal strength indication RSSI of the BWP, the channel occupancy CR of the BWP, and the channel busy rate CBR of the BWP.

Optionally, the first threshold, the second threshold, and the third threshold are configured by the network device or specified by the communication protocol.

Optionally, the UE 300 further includes: a receiving module 302; the receiving module 302 is configured to receive first indication information sent by the network device before the handover module 301 switches the currently activated first target BWP to the second target BWP according to the at least one congestion measurement result, where the first indication information is used to indicate whether the UE performs BWP congestion evaluation before switching BWP; the switching module 301 is specifically configured to, in a case that the first indication information received by the receiving module 302 indicates that the UE performs BWP congestion evaluation before switching BWP, switch the first target BWP to the second target BWP according to at least one congestion measurement result.

Optionally, the switching module 301 is specifically configured to determine whether a congestion measurement result of the first BWP meets a congestion condition; the first BWP is any one of N BWPs, or is the same BWP as the second BWP among the N BWPs, the second BWP is the BWP corresponding to the handover condition, the N BWPs are the BWPs except the first target BWP in the BWPs configured by the network device, and N is a positive integer; under the condition that the congestion measurement result of the first BWP is determined not to meet the congestion condition, switching the first target BWP to the first BWP, wherein the second target BWP is the first BWP; and under the condition that the congestion measurement result of the first BWP meets the congestion condition, switching the first target BWP to a third BWP according to the congestion measurement results of other BWPs, wherein the other BWPs are the BWPs except the first BWP, the third BWP is the BWP in the other BWPs, and the second target BWP is the third BWP.

Optionally, the connection failure includes at least one of: switching failure, secondary cell group switching failure, radio link failure and target times larger than or equal to a fourth threshold; the target number of times is the number of consecutive failures of the UE to perform listen before talk LBT detection.

Optionally, the UE 300 further includes: an execution module 303; the executing module 303 is configured to execute a target action for a first cell when a first condition is met, where the first cell is a cell where the UE is to switch the BWP, and the target action is at least one of a first action and a second action; wherein the first condition includes a first sub-condition or a second sub-condition, the first sub-condition is that a congestion measurement result of a fourth BWP satisfies a congestion condition, the fourth BWP is the same BWP as the second BWP among the N BWPs, and the second BWP is the BWP corresponding to the handover condition; the second sub-condition is that the congestion measurement result of each BWP in the N BWPs satisfies the congestion condition, where the N BWPs are the BWPs except the first target BWP in the BWPs configured by the network device, and N is a positive integer; the first action is to trigger a connection reestablishment process, and the second action is to send congestion failure indication information to the network equipment, wherein the congestion failure indication information is used for indicating that the first cell has congestion failure.

Optionally, the executing module 303 is specifically configured to execute the target action for the first cell when the first condition and the second condition are met; wherein, when the second condition is a third sub-condition or a fourth sub-condition, the target action is at least one of the first action and the second action; the third sub-condition is that the first cell is a primary cell of a primary cell group of the UE; the fourth sub-condition is that the first cell is any cell of the master cell group, and other cells of the master cell group all have connection failure; when the second condition is a fifth sub-condition, a sixth sub-condition or a seventh sub-condition, the target action is taken as a second action; the fifth sub-condition is that the first cell is any auxiliary cell of the main cell group; the sixth sub-condition is that the first cell is any auxiliary cell or main auxiliary cell of the auxiliary cell group of the UE; the seventh sub-condition is that the first cell is any cell of the secondary cell group, and connection failure occurs in other cells of the secondary cell group.

It should be noted that, as shown in fig. 6, modules that are necessarily included in the UE 300 are illustrated by solid line boxes, such as the handover module 301; modules that may or may not be included in the UE 300 are illustrated with dashed boxes as a receiving module 302 and an executing module 303.

The UE provided in the embodiment of the present invention can implement each process shown in the foregoing embodiment, and is not described herein again to avoid repetition.

In the UE provided in the embodiment of the present invention, the UE may switch the currently activated first target BWP to the second target BWP according to at least one congestion measurement result, where the at least one congestion measurement result is a congestion measurement result of at least one BWP, and the second target BWP is a BWP in the at least one BWP for which a congestion measurement result does not satisfy a congestion condition. According to the scheme, before the BWP handover is executed, the UE firstly obtains at least one congestion measurement result, then determines a second target BWP which does not meet the congestion condition according to the at least one congestion measurement result, and then switches the first target BWP to the second target BWP. In this way, the UE performs BWP congestion evaluation before performing BWP handover, so as to ensure that the currently activated BWP can be handed over to the target BWP not occupied by other UEs when performing BWP handover, thereby ensuring that the UE successfully performs BWP handover.

Fig. 7 is a schematic hardware structure diagram of a UE for implementing various embodiments of the present invention, where the UE400 includes but is not limited to: radio frequency unit 401, network module 402, audio output unit 403, input unit 404, sensor 405, display unit 406, user input unit 407, interface unit 408, memory 409, processor 410, and power supply 411. Those skilled in the art will appreciate that the structure of the UE400 shown in fig. 7 does not constitute a limitation of the UE, and that the UE400 may include more or fewer components than shown, or combine certain components, or a different arrangement of components. In the embodiment of the present invention, the UE400 includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted UE, a wearable device, a pedometer, and the like.

Wherein, the processor 410 is configured to switch a currently activated first target BWP to a second target BWP according to at least one congestion measurement result, where the at least one congestion measurement result is a congestion measurement result of at least one BWP, and the second target BWP is a BWP of the at least one BWP for which the congestion measurement result does not satisfy the congestion condition.

In the terminal device provided in the embodiment of the present invention, the UE may switch the currently activated first target BWP to the second target BWP according to at least one congestion measurement result, where the at least one congestion measurement result is a congestion measurement result of the at least one BWP, and the second target BWP is a BWP in the at least one BWP for which the congestion measurement result does not satisfy the congestion condition. According to the scheme, before the BWP handover is executed, the UE firstly obtains at least one congestion measurement result, then determines a second target BWP which does not meet the congestion condition according to the at least one congestion measurement result, and then switches the first target BWP to the second target BWP. In this way, the UE performs BWP congestion evaluation before performing BWP handover, so as to ensure that the currently activated BWP can be handed over to the target BWP not occupied by other UEs when performing BWP handover, thereby ensuring that the UE successfully performs BWP handover.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 401 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 410; in addition, the uplink data is transmitted to the base station. Typically, radio unit 401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio unit 401 can also communicate with a network and other devices through a wireless communication system.

The UE400 provides the user with wireless broadband internet access via the network module 402, such as helping the user send and receive e-mails, browse web pages, and access streaming media.

The audio output unit 403 may convert audio data received by the radio frequency unit 401 or the network module 402 or stored in the memory 409 into an audio signal and output as sound. Also, the audio output unit 403 may also provide audio output related to a specific function performed by the UE400 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 403 includes a speaker, a buzzer, a receiver, and the like.

The input unit 404 is used to receive audio or video signals. The input Unit 404 may include a Graphics Processing Unit (GPU) 4041 and a microphone 4042, and the Graphics processor 4041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 406. The image frames processed by the graphic processor 4041 may be stored in the memory 409 (or other storage medium) or transmitted via the radio frequency unit 401 or the network module 402. The microphone 4042 may receive sound, and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 401 in case of the phone call mode.

The UE400 also includes at least one sensor 405, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 4061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 4061 and/or backlight when the UE400 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the UE attitude (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 405 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be described in detail herein.

The display unit 406 is used to display information input by the user or information provided to the user. The Display unit 406 may include a Display panel 4061, and the Display panel 4061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 407 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the UE 400. Specifically, the user input unit 407 includes a touch panel 4071 and other input devices 4072. Touch panel 4071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 4071 using a finger, a stylus, or any suitable object or attachment). The touch panel 4071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 410, receives a command from the processor 410, and executes the command. In addition, the touch panel 4071 can be implemented by using various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 4071, the user input unit 407 may include other input devices 4072. Specifically, the other input devices 4072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 4071 can be overlaid on the display panel 4061, and when the touch panel 4071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 410 to determine the type of the touch event, and then the processor 410 provides a corresponding visual output on the display panel 4061 according to the type of the touch event. Although in fig. 7, the touch panel 4071 and the display panel 4061 are two separate components to implement the input and output functions of the UE400, in some embodiments, the touch panel 4071 and the display panel 4061 may be integrated to implement the input and output functions of the UE400, which is not limited herein.

The interface unit 408 is an interface for connecting an external device to the UE 400. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 408 may be used to receive input from external devices (e.g., data information, power, etc.) and transmit the received input to one or more elements within the UE400 or may be used to transmit data between the UE400 and external devices.

The memory 409 may be used to store software programs as well as various data. The memory 409 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 409 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 410 is a control center of the UE400, connects various parts of the entire UE400 using various interfaces and lines, performs various functions of the UE400 and processes data by operating or executing software programs and/or modules stored in the memory 409 and calling data stored in the memory 409, thereby performing overall monitoring of the UE 400. Processor 410 may include one or more processing units; optionally, the processor 410 may integrate an application processor and a modem processor, wherein the application processor mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 410.

The UE400 may further include a power supply 411 (e.g., a battery) for supplying power to various components, and optionally, the power supply 411 may be logically connected to the processor 410 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.

In addition, the UE400 includes some functional modules that are not shown, and are not described in detail herein.

Optionally, an embodiment of the present invention further provides a UE, which includes the processor 410 shown in fig. 7, a memory 409, and a computer program that is stored in the memory 409 and is executable on the processor 410, and when the computer program is executed by the processor 410, the processes of the foregoing method embodiments are implemented, and the same technical effect can be achieved, and in order to avoid repetition, details are not described here again.

As shown in fig. 8, an embodiment of the present invention provides a network device 500, where the network device 500 includes: a sending module 501; the sending module 501 is configured to send first indication information to the UE, where the first indication information is used to indicate whether the UE performs BWP congestion evaluation before switching BWP.

Optionally, in a case where the first indication information indicates that the UE performs BWP congestion evaluation before switching BWP, the first indication information includes a congestion condition for determining whether the BWP is congested.

Optionally, the congestion condition includes at least one of: the RSSI of the BWP is greater than or equal to a first threshold, the occupancy CR of the BWP is greater than or equal to a second threshold, and the busy rate CBR of the BWP is greater than or equal to a third threshold.

Optionally, the network device 500 further includes: a receiving module 502; the receiving module 502 is configured to receive congestion failure indication information sent by the UE after the sending module sends the first indication information to the UE, where the congestion failure indication information is used to indicate that a first cell fails to be congested, and the first cell is a cell to which BWP is to be switched by the UE.

It should be noted that, as shown in fig. 8, modules that are necessarily included in the network device 500 are illustrated by solid line boxes, such as the sending module 501; modules that may or may not be included in network device 500 are illustrated with dashed boxes, such as receiving module 502.

The network device provided in the embodiment of the present invention may be the network device capable of implementing each process shown in the foregoing method embodiment, and is not described here again to avoid repetition.

In the network device provided by the embodiment of the present invention, the network device may send, to the UE, first indication information, where the first indication information is used to indicate whether the UE performs BWP congestion evaluation before switching BWP. The UE may handover the currently activated first target BWP to the second target BWP according to at least one congestion measurement result, where the first indication information indicates that the UE performs BWP congestion evaluation before switching BWP, the at least one congestion measurement result being a congestion measurement result of at least one BWP, and the second target BWP being a BWP of the at least one BWP for which the congestion measurement result does not satisfy the congestion condition. In this way, the UE performs BWP congestion evaluation before performing BWP handover, so as to ensure that the currently activated BWP can be handed over to the target BWP not occupied by other UEs when performing BWP handover, thereby ensuring that the UE successfully performs BWP handover.

Fig. 9 is a schematic diagram of a hardware structure of a network device for implementing an embodiment of the present invention, where the network device 600 includes: a processor 601, a transceiver 602, a memory 603, a user interface 604, and a bus interface 605.

Wherein the transceiver 602 is configured to send, to the UE, first indication information indicating whether the UE performs BWP congestion evaluation before switching BWP.

In the embodiment of the present invention, in fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the processor 601 and various circuits of the memory represented by the memory 603 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 602 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different end devices, the user interface 604 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 may store data used by the processor 601 in performing operations.

In addition, the network device 600 further includes some functional modules that are not shown, and are not described herein again.

Optionally, an embodiment of the present invention further provides a network device, which includes the processor 601 shown in fig. 9, a memory 603, and a computer program that is stored in the memory 603 and is executable on the processor 601, and when the computer program is executed by the processor 603, the computer program implements each process of the foregoing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

An embodiment of the present invention further provides a communication system, where the communication system includes the UE and the network device according to the above embodiment.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 410 shown in fig. 7 and/or the processor 603 shown in fig. 9, the computer program implements the processes of the method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

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

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

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

Claims

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

and switching the currently activated first target BWP to a second target BWP according to at least one congestion measurement result, wherein the at least one congestion measurement result is a congestion measurement result of at least one BWP, and the second target BWP is a BWP of the at least one BWP, and the congestion measurement result does not meet the congestion condition.

2. The method according to claim 1, characterized in that the congestion measurement result of one BWP comprises at least one of the following: the received signal strength indication RSSI of the BWP, the channel occupancy CR of the BWP, and the channel busy rate CBR of the BWP.

3. The method of claim 2, wherein the congestion condition comprises at least one of: RSSI of BWP is greater than or equal to a first threshold, CR of BWP is greater than or equal to a second threshold, CBR of BWP is greater than or equal to a third threshold.

4. The method of claim 3, wherein the first threshold, the second threshold, and the third threshold are configured by a network device or specified by a communication protocol.

5. The method of claim 1, wherein before switching the currently activated first target BWP to the second target BWP according to the at least one congestion measurement result, further comprising:

receiving first indication information sent by a network device, wherein the first indication information is used for indicating whether the UE performs BWP congestion assessment before switching BWP;

the switching the currently activated first target BWP to the second target BWP according to the at least one congestion measurement result includes:

in case the first indication information indicates that the UE performs BWP congestion evaluation before switching BWP, switching the first target BWP to the second target BWP according to the at least one congestion measurement result.

6. The method according to claim 1 or 5, wherein the switching the currently active first target BWP to the second target BWP based on the at least one congestion measurement result comprises:

determining whether a congestion measurement result of the first BWP satisfies the congestion condition; the first BWP is any one of N BWPs, or is the same BWP as a second BWP among the N BWPs, where the second BWP is a BWP corresponding to the handover condition, the N BWPs are BWPs except for the first target BWP in the BWPs configured by the network device, and N is a positive integer;

switching the first target BWP to the first BWP, the second target BWP being the first BWP, if it is determined that the congestion measurement result of the first BWP does not satisfy the congestion condition;

and in the case that it is determined that the congestion measurement result of the first BWP satisfies the congestion condition, switching the first target BWP to a third BWP according to congestion measurement results of other BWPs, where the other BWPs are BWPs of the N BWPs except the first BWP, the third BWP is a BWP of the other BWPs, and the second target BWP is the third BWP.

7. The method according to claim 6, wherein the handover condition is any one of: the UE receives a BWP handover command, the UE determines that an inactivity timer of the first target BWP expires, the UE fails to initiate random access on the first target BWP, and the UE fails to connect on the first target BWP.

8. The method of claim 7, wherein the connection failure comprises at least one of: switching failure, secondary cell group switching failure, radio link failure and target times larger than or equal to a fourth threshold; the target number of times is the number of times that the UE continuously fails in Listen Before Talk (LBT) detection.

9. The method of claim 1, further comprising:

under the condition that a first condition is met, executing a target action aiming at a first cell, wherein the first cell is a cell of the UE to be switched with BWP, and the target action is at least one of a first action and a second action;

wherein the first condition includes a first sub-condition or a second sub-condition, the first sub-condition being that a congestion measurement result of a fourth BWP satisfies the congestion condition, the fourth BWP being a same BWP of the N BWPs as a second BWP, the second BWP being a BWP corresponding to the handover condition; the second sub-condition is that the congestion measurement result of each BWP in the N BWPs satisfies the congestion condition, where the N BWPs are the BWPs except for the first target BWP in the BWPs configured by the network device, and N is a positive integer;

the first action is to trigger a connection reestablishment process, and the second action is to send congestion failure indication information to the network device, where the congestion failure indication information is used to indicate that the first cell has congestion failure.

10. The method of claim 9, wherein performing the target action for the first cell if the first condition is satisfied comprises:

performing the target action for the first cell if the first and second conditions are met;

wherein, in a case where the second condition is a third sub-condition or a fourth sub-condition, the target action is at least one of the first action and the second action; the third sub-condition is that the first cell is a primary cell of a primary cell group of the UE; the fourth sub-condition is that the first cell is any cell of the master cell group and other cells of the master cell group all have connection failure;

when the second condition is a fifth sub-condition, a sixth sub-condition, or a seventh sub-condition, the target action is the second action; the fifth sub-condition is that the first cell is any secondary cell of the master cell group; the sixth sub-condition is that the first cell is any secondary cell or primary and secondary cells of the secondary cell group of the UE; the seventh sub-condition is that the first cell is any cell of the secondary cell group and connection failure occurs in other cells of the secondary cell group.

11. A bandwidth part BWP switching method, applied to a network device, the method comprising:

sending first indication information to a User Equipment (UE), wherein the first indication information is used for indicating whether the UE performs BWP congestion assessment before switching BWP.

12. The method of claim 11, wherein in case the first indication information indicates that the UE performs BWP congestion evaluation before switching BWP, the first indication information comprises a congestion condition for determining whether BWP is congested.

13. The method of claim 12, wherein the congestion condition comprises at least one of:

the RSSI of the BWP is greater than or equal to a first threshold, the occupancy CR of the BWP is greater than or equal to a second threshold, and the busy rate CBR of the BWP is greater than or equal to a third threshold.

14. The method according to any of claims 11 to 13, wherein after the sending the first indication information to the UE, the method further comprises:

and receiving congestion failure indication information sent by the UE, wherein the congestion failure indication information is used for indicating that a first cell fails to be congested, and the first cell is a cell to be switched to BWP by the UE.

15. A User Equipment (UE), the UE comprising: a switching module;

the switching module is configured to switch a currently activated first target BWP to a second target BWP according to at least one congestion measurement result, where the at least one congestion measurement result is a congestion measurement result of at least one BWP, and the second target BWP is a BWP in the at least one BWP for which a congestion measurement result does not satisfy a congestion condition.

16. The UE of claim 15, wherein the congestion measurement result for one BWP comprises at least one of: the received signal strength indication RSSI of the BWP, the channel occupancy CR of the BWP, and the channel busy rate CBR of the BWP.

17. The UE of claim 16, wherein the congestion condition comprises at least one of: RSSI of BWP is greater than or equal to a first threshold, CR of BWP is greater than or equal to a second threshold, CBR of BWP is greater than or equal to a third threshold.

18. The UE of claim 17, wherein the first threshold, the second threshold, and the third threshold are network device configured or communication protocol specified.

19. The UE of claim 15, wherein the UE further comprises: a receiving module;

the receiving module is configured to receive first indication information sent by a network device before the handover module switches the currently activated first target BWP to the second target BWP according to at least one congestion measurement result, where the first indication information is used to indicate whether BWP congestion evaluation is performed by the UE before BWP handover;

the handover module is specifically configured to, when the first indication information received by the receiving module indicates that the UE performs BWP congestion evaluation before BWP handover, handover the first target BWP to the second target BWP according to the at least one congestion measurement result.

20. The UE of claim 15 or 19, wherein the handover module is specifically configured to determine whether the congestion measurement result of the first BWP satisfies the congestion condition; the first BWP is any one of N BWPs, or is the same BWP as a second BWP among the N BWPs, where the second BWP is a BWP corresponding to the handover condition, the N BWPs are BWPs except for the first target BWP in the BWPs configured by the network device, and N is a positive integer; switching the first target BWP to the first BWP, the second target BWP being the first BWP, if it is determined that the congestion measurement result of the first BWP does not satisfy the congestion condition; and in the case that it is determined that the congestion measurement result of the first BWP satisfies the congestion condition, switching the first target BWP to a third BWP according to congestion measurement results of other BWPs, where the other BWPs are BWPs of the N BWPs except the first BWP, the third BWP is a BWP of the other BWPs, and the second target BWP is the third BWP.

21. The UE of claim 20, wherein the handover condition is any one of: the UE receives a BWP handover command, the UE determines that an inactivity timer of the first target BWP expires, the UE fails to initiate random access on the first target BWP, and the UE fails to connect on the first target BWP.

22. The UE of claim 21, wherein the connection failure comprises at least one of: switching failure, secondary cell group switching failure, radio link failure and target times larger than or equal to a fourth threshold; the target number of times is the number of times that the UE continuously fails in Listen Before Talk (LBT) detection.

23. The UE of claim 15, wherein the UE further comprises: an execution module;

the executing module is configured to execute a target action for a first cell when a first condition is met, where the first cell is a cell to which BWP is to be switched by the UE, and the target action is at least one of a first action and a second action;

24. The UE of claim 23, wherein the performing module is specifically configured to perform the target action for the first cell if the first and second conditions are met;

25. A network device, characterized in that the network device comprises: a sending module;

the sending module is configured to send first indication information to a user equipment UE, where the first indication information is used to indicate whether the UE performs BWP congestion evaluation before switching BWP.

26. The network device of claim 25, wherein in the case that the first indication information indicates that the UE performs BWP congestion assessment before switching BWP, the first indication information comprises a congestion condition for determining whether BWP is congested.

27. The network device of claim 26, wherein the congestion condition comprises at least one of:

28. The network device of any one of claims 25 to 27, wherein the network device further comprises: a receiving module;

the receiving module is configured to receive congestion failure indication information sent by the UE after the sending module sends the first indication information to the UE, where the congestion failure indication information is used to indicate that a first cell fails to be congested, and the first cell is a cell to which BWP is to be switched by the UE.

29. User equipment, UE, comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the bandwidth part BWP switching method according to any of the claims 1 to 10.

30. A network device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the bandwidth portion BWP switching method according to any one of claims 11 to 14.

31. A communication system, characterized in that the communication system comprises a user equipment, UE, according to any of claims 15 to 24 and a network device according to any of claims 25 to 28; alternatively, the first and second electrodes may be,

the communication system comprises the UE of claim 29 and the network device of claim 30.

32. A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, implements the steps of the bandwidth part BWP switching method according to any one of claims 1 to 14.