CN115150957A

CN115150957A - BWP switching method, apparatus, terminal, storage medium and product

Info

Publication number: CN115150957A
Application number: CN202210659724.1A
Authority: CN
Inventors: 吴晓荣
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-10-04
Also published as: WO2023241247A1

Abstract

The present application relates to a BWP switching method, apparatus, terminal, storage medium and product. The method comprises the following steps: confirming the conflict between the parameter loading effective process and the neighbor cell measurement process in the BWP switching process, and executing the neighbor cell measurement process; and confirming the end of the execution of the neighbor cell measurement process, and executing the parameter loading validation process. By adopting the method, the normal use of the equipment can be ensured when the parameter loading validation process and the neighbor cell measurement process in the BWP switching process conflict.

Description

BWP switching method, apparatus, terminal, storage medium and product

Technical Field

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

Background

With the continuous development of the 5G NR (New Radio, new air interface) technology, BWP (Bandwidth Part) is also widely used as one of the most critical core technologies of 5G. BWPs are equivalent to divide a 5G spectrum into many small blocks within a certain time, where the bandwidth, subcarrier spacing, and other control parameters of each BWP may be different, and are equivalent to divide a plurality of sub-cells with different configurations within a 5G cell to adapt to different types of terminals and service types.

The BWP handover procedure generally includes a demodulation process, a parameter calculation process, and a parameter loading validation process. In the demodulation process, the UE demodulates the control parameters issued by the base station to obtain the control parameters required by BWP switching; in the parameter calculation process, the UE calculates the parameters of the BWP after switching according to the control parameters required during the BWP switching to obtain the parameters of a new BWP after switching; in the parameter loading validation process, the UE loads and validates the parameters of the new BWP.

However, the existing BWP handover procedure may cause failure of radio hardware of the UE in some cases, thereby affecting normal use of the UE.

Disclosure of Invention

The embodiment of the application provides a BWP switching method, a BWP switching device, a terminal, a storage medium and a product, which can avoid the problem that the performance of radio frequency hardware of equipment is influenced when a parameter loading validation process and a neighbor cell measurement process conflict with each other, thereby ensuring the normal use of the equipment.

In a first aspect, a BWP handover method is provided, where the method includes:

confirming the conflict between the effective parameter loading process and the neighbor cell measurement process in the BWP switching process, and executing the neighbor cell measurement process;

and confirming the end of the execution of the neighbor cell measurement process, and executing the parameter loading validation process.

In a second aspect, there is provided a BWP switching apparatus, the apparatus including:

a first execution module, configured to confirm that a parameter loading validation process in the BWP switching flow conflicts with a neighbor cell measurement process, and execute the neighbor cell measurement process;

and the second execution module is used for confirming that the execution of the neighbor cell measurement process is finished and executing the parameter loading validation process.

In a third aspect, a terminal is provided, comprising a memory and a processor, wherein the memory stores a computer program, and the computer program, when executed by the processor, causes the processor to perform the steps of the method of the first aspect.

In a fourth aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the method of the first aspect described above.

In a fifth aspect, a computer program product is provided, comprising a computer program which, when executed by a processor, performs the steps of the method of the first aspect described above.

According to the BWP switching method, the BWP switching device, the BWP switching terminal, the BWP switching storage medium and the BWP switching product, when the parameter loading validation process conflicts with the neighbor cell measurement process, the neighbor cell measurement process is executed, and after the neighbor cell measurement process is confirmed to be finished, the parameter loading validation process is executed. In the method, whether the parameter loading validation process in the BWP switching process conflicts with the neighbor cell measurement process or not can be confirmed in the BWP switching process, and the parameter loading validation process in the BWP switching process is executed after the neighbor cell measurement is finished when the conflict occurs, so that the problem that the radio frequency hardware performance of the equipment is influenced when the parameter loading validation process conflicts with the neighbor cell measurement process can be avoided, and the normal use of the equipment can be ensured; furthermore, since the neighbor cell measurement can be preferentially performed when the parameter loading validation process and the neighbor cell measurement process conflict with each other, the normal operation of the neighbor cell measurement can be ensured, and the mobility of the device can be ensured not to be influenced.

Drawings

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

FIG. 1 is a schematic diagram of switching between multiple BWPs;

fig. 2 is a schematic diagram of an example of multiple SSBs in one carrier;

FIG. 3 is a schematic diagram of the structure of an SSB;

FIG. 4 is a diagram of an application environment of a BWP handoff method in one embodiment;

FIG. 5 is a flowchart of a BWP handoff method in one embodiment;

FIG. 6 is a flowchart of a BWP handoff method in another embodiment;

fig. 7 is a flowchart of a BWP handover method in another embodiment;

FIG. 8 is an exemplary diagram of BWP handoff latency in another embodiment;

FIG. 9 is a diagram illustrating a BWP handover procedure in the prior art;

fig. 10 is a timing diagram of a BWP handover procedure based on DCI trigger in the prior art;

fig. 11 is a schematic diagram of a BWP handover procedure in the present application;

fig. 12 is a timing diagram of a BWP handover procedure based on DCI trigger in the present application;

FIG. 13 is a block diagram showing the structure of a BWP switching device in accordance with an embodiment;

fig. 14 is a block diagram of a terminal in one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Before describing specific embodiments of the present application, definitions of terms related to the present application will be described in detail.

NR: new Radio, new air interface, and a global 5G standard designed based on the OFDM New air interface;

OFDM: orthogonal Frequency Division Multiplexing;

BWP: bandwidth Part, a portion of Bandwidth;

and (2) SSB: SS/PBCH Block, synchronization signal/physical broadcast channel Block;

PSS: a master synchronization signal;

SSS: a secondary synchronization signal;

and (2) SMTC: SS/PBCH Block Measurement Time Configuration, SSB Measurement Time Configuration;

RB: resource Block, resource Block;

SCS: subcarrier Spacing;

BA: bandwidth Adaptation, bandwidth adaptive change;

NCGI: NR Cell Global Identifier, NR Cell Global identity;

carrier: a carrier wave;

initial BWP: an initial BWP;

dedicated BWP: a dedicated BWP;

RF: radio Frequency, radio Frequency;

rx: receive;

DFE: digital front-end, digital front end;

UE: user equipment, user equipment;

MG: measurement Gap, measurement interval;

CSI-RS: channel state Information-Reference Signal, channel state Information Reference Signal;

SSB pattern: an SSB mode;

subframe: a sub-frame boundary;

RRM: radio Resource Management, radio Resource Management;

periodicity: a period;

duration: a window length;

offset: time domain shifting;

DL BWP: downlink BWP, downlink SSB;

intrafrequency measurements with no measurement gaps: intra-frequency measurements without measurement intervals;

intrafrequency measurements with measurement gates: intra-frequency measurements with measurement intervals;

and (4) RSRP: a reference signal received power;

RSRQ: a reference signal received quality;

SNR: signal-to-noise ratio;

RACH: a random access channel;

RRC Reconfiguration: reconfiguring;

MGL: measurement Gap Length, measuring interval Length;

MGRP: measuring an interval Repetition Period by using a Measurement Gap Repetition Period;

MGTA: measuring interval Timing Advance;

gap Offset, measuring the time domain Offset of the interval;

TTI: transmission Time Interval, transmission Time Interval;

inter frequency SMTC: inter-frequency SMTC.

Currently, two frequency ranges (bandwidth ranges) are defined in 5G NR, FR1 and FR2, respectively, where NR has a bandwidth range of 5MH-100MHz at FR1 and a bandwidth range of 50MHz-400MHz at FR 2. Under the two defined bandwidth ranges, if all terminals (i.e. user equipment UE, hereinafter, the terminals are referred to as UE) are required to support the maximum 100MHz bandwidth or 400MHz bandwidth, it is undoubtedly higher requirement on the performance of the UE, and is not beneficial to reducing the cost of the UE. In addition, in the actual working process of the UE, each UE may not always occupy the whole bandwidth at the same time, and if the UE always uses the data sampling rate corresponding to the maximum bandwidth, it is certainly a huge waste. While large bandwidth means high sampling rate, and high sampling rate means high power consumption and high cost, NR introduces BWP technology, so that traffic bandwidth (including uplink/downlink) of UE can be dynamically adjusted. Referring to fig. 1, a schematic diagram of BWP handover is shown, in which it can be seen that a network of base stations is configured with 3 BWPs (BWPs, respectively) on a cell ₁ 、BWP ₂ 、BWP ₃ ) Therefore, the UE can switch the BWP according to different service scenes, and the scheduling processing of the base station to the UE is realized.

In FIG. 1, BWP ₁ Is 40MHz, the subcarrier spacing (SCS) is 15kHz; BWP ₂ The bandwidth of (2) is 10MHz, the subcarrier spacing (SCS) is 15kHz; BWP ₃ The bandwidth of (2) is 20MHz and the subcarrier spacing (SCS) is 60kHz. As can be seen from the figure, assuming that the UE has a large traffic volume at the first time, the UE can be scheduled in a large Bandwidth (BWP) ₁ ) C, removing; at the second moment, the traffic of the UE is small, and the UE can switch BWP, i.e. the UE is scheduled in a small Bandwidth (BWP) ₂ ) In the above, it is sufficient to meet the basic communication requirements; at the third moment, the BS finds BWP ₁ Within a wide range of frequency selective fading, or BWP ₁ Within a range of frequenciesThe resources are scarce, and the UE can be triggered to switch BWP again, i.e. the UE is scheduled at a new Bandwidth (BWP) ₃ ) The above. Wherein the configuration of the BWP is divided into a BWP-common (BWP common part) of the cell-specific and a BWP-dedicated (BWP dedicated part) of the BWP-specific; the Common part is configured by signaling Serving Cell Config Common and the dedicated part is configured by signaling Serving Cell Config.

As can be seen from the above description, the terminal can implement different services at low cost and meeting the requirements by switching BWP. Then, during the actual BWP switching process, the base station usually triggers the terminal to perform the BWP switching process at the trigger time point, at this time, the terminal stops data transceiving on the current BWP, and performs the parameter calculation process of the new BWP, and loads the parameters of the new BWP after the calculation is completed, and the rf hardware of the terminal can validate the parameters of the new BWP before the next slot boundary, complete the BWP switching, and continue data transceiving on the new BWP. However, in the actual communication process, the terminal may also continuously measure the signal of the neighboring cell and report the signal to the base station (i.e., perform the neighboring cell measurement), so as to implement the cell handover. When the terminal happens to be adjacent to the neighbor measurement in the BWP switching process, the above-mentioned technique for BWP switching cannot ensure that the radio frequency hardware of the terminal performs normal data transceiving, thereby affecting the normal use of the terminal.

It should be noted that the inventor has made creative efforts from the determination of the above technical problems and the following specific technical solutions to solve the technical problems.

The following describes related contents of the neighbor cell measurement according to the embodiment of the present application.

The neighbor cell measurement refers to that the UE measures signals of each neighbor cell in a specific time window, and is mainly used for implementing mobility management of the UE in a connected state. In NR, there may be multiple SSBs on the same NR carrier, and they may belong to different cells (for example, their NCGIs are different), as shown in fig. 2, it can be seen that neighboring 2 cells (NCGIs are 5 and 6, respectively) are on the same carrier, and BWP dynamically adjusted when UE is doing service in a connected state may cover SSBs of a neighboring cell, and it is obvious that these SSB neighboring cells belong to inter-frequency neighboring cells; to measure another inter-frequency neighboring cell on a cell, generally, a network needs to configure a measurement interval (MG) for a UE, and punch a hole in service time to implement data reception and measurement of the inter-frequency neighboring cell; of course, the measurement of the inter-frequency neighbor cell is only an example, and the measurement of the same-frequency neighbor cell or the inter-mode measurement may also be performed in the actual neighbor cell measurement process.

The SSBs involved therein are described first below: the SS/PBCH Block (SSB), as shown in fig. 3, occupies 4 OFDM symbols in the time domain, and occupies 20 RBs in the frequency domain, i.e. 240 subcarriers, which are numbered 0 to 239. In a field carrying SS/PBCH Block (field duration is 5 ms), there are at most L candidate time instances where the SS/PBCH Block can be placed, and the index of the first symbol of these candidate time instances is determined by the subcarrier spacing SCS, as shown in table 1 below, where index 0 refers to the first symbol of the first slot in the field.

TABLE 1

The values of the SSB mode and L in table 1 above are determined by the measurement frequency of the UE, the SSB time domain period is {5, 10, 20, 40, 80, 160} ms, and L SSBs (numbered 0 to L-1) in a window with a length of 5ms constitute 1 SS burst set.

Secondly, in general, the base station may configure an SMTC for each SSB measurement frequency point requiring RRM, where the time configuration is configured on a time scale of a serving cell (i.e., a cell where the UE currently resides), that is, a head and a tail of the SMTC of each measurement frequency point are necessarily aligned with a Subframe of a main serving cell. From a measurement perspective, the UE may consider SSBs other than SMTC to be absent. Where SMTCs occur at intervals in the time domain and have a fixed duration, the period ranges from {5, 10, 20, 40, 80, 160} ms, {1,2,3,4,5} ms for duration, 0 to period-1 in ms.

In addition, when the UE performs the neighbor cell measurement, as mentioned above, the same-frequency neighbor cell measurement, different-frequency neighbor cell measurement, and different-mode measurement may be involved (the different mode refers to a mode different from a mode currently adopted by the UE, for example, the UE currently adopts 4G, and the different mode may be 5G, 3G, and the like). NR reference signals for RRM measurements are two: SSB and CSI-RS; the same-frequency neighbor cell measurement and different-frequency neighbor cell measurement corresponding to the serving cell are described below, with reference to table 2:

TABLE 2

SSB common-frequency measurement in a general connection state is divided into 'integer measurement with no measurement gaps' without using a measurement interval MG and 'integer measurement with measurement gaps' without using a MG according to whether SS-BLOCK (namely SSB) is in DL BWP. The CSI common-frequency measurement is necessarily in DL BWP, without using MG. The introduction of SSB pilot frequency measurement on R16 may not require an MG, which depends on the reporting capability of the UE to the base station, so that the measurement on NR whether an MG is used is not a simple correspondence to the common frequency/pilot frequency measurement.

Further, the above mentioned neighbor cell measurement refers to that the UE measures signals of each neighbor cell under a specific time window, where the specific time window is configured for the UE by the base station, that is, the base station may generally configure the UE to perform intra-frequency (intra-frequency) measurement, inter-frequency (inter-frequency) measurement, inter-mode measurement (inter-RAT) in the specific time window, and obtain measurement results such as RSRP, RSRQ, or SNR of each measurement cell, and the specific time window is a measurement interval (which may be abbreviated as MG or Gap); the UE is specified to be incapable of receiving and transmitting data of any service within a measurement interval according to a protocol unless RACH (random access channel) process is initiated; the measurement interval is configured by signaling RRC Reconfiguration.

The configuration parameters of the measurement interval here generally include the following:

measuring interval length MGL, and the value range is {1.5,3,3.5,4,4.5,6} ms;

measuring an interval repetition period MGRP, wherein the value range is {20, 40, 80, 160} ms;

measuring interval timing advance (MGTA), and taking the value range {0,0.25,0.5} ms;

and measuring the time domain Offset Gap Offset of the interval, wherein the value range is 0-MGRP-1 and the unit is ms.

According to the configuration information, the UE can calculate a frame number SFN and a subframe number of the first subframe of each measurement interval, where SFN mod T = FLOOR (GapOffset/10); subframe = GapOffset mod 10; t = MGRP/10; and the UE requires that the MGTA stops any traffic radio transceiving operation before the measurement gap subframe. The measurement interval spacing pattern has increased NR to 24 spacing patterns compared to the original LTE 2 measurement interval spacing pattern.

The following describes an application environment of the embodiments of the present application.

The BWP switching method provided in the embodiment of the present application may be applied to the application environment shown in fig. 4. Wherein the terminal 102 communicates with the base station 104 through a network. In the BWP handover procedure, the base station 104 may send a handover trigger instruction to the terminal 102, and the terminal 102 may perform the BWP handover procedure after receiving the handover trigger instruction. The terminal 102 may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, internet of things devices and portable wearable devices, and the internet of things devices may be smart speakers, smart televisions, smart air conditioners, smart car-mounted devices, and the like. The portable wearable device can be a smart watch, a smart bracelet, a head-mounted device, and the like. The base station 104 may be a 2G base station, a 3G base station, a 4G base station, a 5G base station, and so on.

In an embodiment, as shown in fig. 5, a BWP handover method is provided, and this embodiment relates to a specific process of how to implement BWP handover when a BWP handover procedure conflicts with a neighbor measurement procedure. Taking the application of the method to the terminal in fig. 1 as an example for explanation, the method may include the following steps:

s202, confirming the conflict between the parameter loading effective process and the neighbor cell measurement process in the BWP switching process, and executing the neighbor cell measurement process.

In this step, when triggering the BWP handover procedure, it may be determined whether the parameter loading validation process therein conflicts with the neighbor measurement process. The BWP handover procedure may be triggered by the base station or the terminal, which in short triggers the terminal to perform the BWP handover procedure. Here, after triggering the terminal to perform the BWP handover procedure, the terminal is still on the currently used BWP, and it may perform the demodulation process of the control parameters and the calculation process of the new BWP parameters first. Here, the demodulation process of the control parameters mainly includes control parameters of a new BWP to which the terminal needs to switch, control parameters for implementing terminal scheduling, and so on.

In NR, when the terminal actually performs the BWP handover procedure, the neighbor measurement procedure and the BWP handover procedure are independent from each other from the signaling source triggered by the base station, and their processing mechanisms are completely controlled by the terminal itself. In this case, it is inevitable that when the terminal executes the BWP handover procedure, the neighboring cell measurement procedure may also need to be performed, so that the BWP handover procedure and the neighboring cell measurement procedure conflict with each other.

Specifically, after the terminal completes the calculation process of the new BWP parameter and before the parameter loading validation process is executed, the terminal may detect whether the neighbor measurement is needed, and if the neighbor measurement is needed, it indicates that the parameter loading validation process conflicts with the neighbor measurement process. If the terminal detects that the parameter loading validation process and the neighbor cell measurement process in the BWP switching flow conflict, namely the terminal can confirm that the parameter loading validation process and the neighbor cell measurement process conflict, the neighbor cell measurement process is firstly carried out.

And S204, confirming the end of the execution of the neighbor cell measurement process, and executing the parameter loading validation process.

In this step, the terminal may execute the neighboring cell measurement process first, and then execute the parameter loading validation process after the neighboring cell measurement process is finished.

In the BWP switching method, after triggering the BWP switching process, when it is determined that the parameter loading validation process conflicts with the neighbor measurement process in the BWP switching process, the neighbor measurement process is executed, and after it is determined that the neighbor measurement process is completed, the parameter loading validation process is executed. In the method, whether the parameter loading effective process in the flow conflicts with the neighbor cell measurement process or not can be confirmed in the BWP switching flow, and the parameter loading effective process in the BWP switching flow is executed after the neighbor cell measurement is finished when the conflict occurs, so that the problem that the radio frequency hardware performance of the equipment is influenced when the parameter loading effective process conflicts with the neighbor cell measurement process can be avoided, and the normal use of the equipment can be ensured; furthermore, since the neighbor cell measurement can be preferentially performed when the parameter loading validation process and the neighbor cell measurement process conflict with each other, the normal operation of the neighbor cell measurement can be ensured, and the mobility of the device can be ensured not to be influenced.

The above-mentioned embodiment mentions that the terminal may detect that the parameter validation process in the BWP handover procedure conflicts with the neighbor cell measurement process, and the following describes in detail how to detect the conflict.

In another embodiment, another BWP switching method is provided, and on the basis of the foregoing embodiment, as shown in fig. 6, the foregoing S202 may include the following steps:

s2022, determining whether the first time slot is located within the measurement interval; wherein, the first time slot is the next time slot of the time slot occupied by the parameter calculation process in the BWP switching process.

In this step, after the base station configures the measurement interval for the terminal, the terminal may obtain a first limit value and a second limit value (where the first limit value is smaller than the second limit value) at two ends of the measurement interval, and determine whether the first time slot is greater than the first limit value and smaller than the second limit value; and if the first time slot is larger than the first limit value and smaller than the second limit value, determining that the first time slot is positioned in the measurement interval, otherwise, determining that the first time slot is not positioned in the measurement interval.

When the first time slot is used for the determination, the start time of the first time slot may be used for the determination, or the end time of the first time slot may also be used for the determination, or any time in the first time slot may also be used for the determination, in short, it is enough to detect whether the first time slot is within the measurement interval.

Further, when the terminal executes the BWP switching process, after the parameter calculation process in the BWP switching process is completed, the time slot in which the current parameter calculation process is located may be obtained, that is, the time slot occupied by the parameter calculation process is obtained, where the occupied time slot may be at any position in the time slot, and the next adjacent time slot of the occupied time slot is the first time slot here.

S2024, if the first time slot is located within the measurement interval, determining the first time slot as a target first time slot, and determining that the parameter loading validation process conflicts with the neighbor cell measurement process.

In this step, when the first timeslot is determined to be within the measurement interval, that is, the terminal needs to perform the neighbor measurement in the first timeslot, and if the terminal directly performs the parameter loading validation process after the parameter calculation process is completed, the terminal necessarily needs to perform data transceiving with the parameters of the new BWP in the first timeslot, the neighbor cell measurement process is performed by using the current BWP parameter, and then the neighbor cell measurement process is performed, which inevitably causes data transceiving conflict of the radio frequency hardware of the terminal, that is, conflict occurs between the parameter loading validation process and the neighbor cell measurement process.

At this time, the terminal may mark the first timeslot located in the measurement interval as a target first timeslot, and determine that the parameter loading validation process in the BWP handover procedure conflicts with the neighbor measurement process.

In this embodiment, by determining whether a next timeslot of a timeslot occupied by a parameter calculation process in the BWP switching flow is located in a measurement interval, if the next timeslot is located in the measurement interval, the first timeslot is used as a target first timeslot, and it is determined that a parameter loading validation process in the BWP switching flow conflicts with an adjacent measurement process. Whether the parameter loading effective process conflicts with the adjacent cell measurement process can be determined accurately and quickly by determining whether the next time slot is in the measurement interval, and the efficiency and the accuracy of the adjacent cell measurement process are improved.

In the above embodiment, it is mentioned that when the parameter loading validation process and the neighbor cell measurement process conflict, the parameter loading validation process may be executed after the neighbor cell measurement is finished, and the following embodiment describes in detail how to execute the parameter loading validation process after the neighbor cell measurement is finished.

In another embodiment, another BWP switching method is provided, and on the basis of the foregoing embodiment, as shown in fig. 7, the foregoing S204 may include the following steps:

s2042, sequentially detecting whether each second time slot after the target first time slot is located in the measurement interval until a target second time slot not located in the measurement interval is detected; the second time slots are adjacent in time sequence.

In this step, after the target first time slot is detected to be located in the measurement interval, each second time slot after the target first time slot may continue to be detected, where each second time slot is adjacent in time sequence, that is, the time corresponding to each second time slot is different. Here, the manner of detecting whether each second time slot is located in the measurement interval may be the same as the manner of detecting whether the first time slot is located in the measurement interval, that is, whether the second time slot is located in the first limit value and the second limit value at both ends of the measurement interval may also be detected.

In addition, when detecting whether each second timeslot is located in the measurement interval, only one timeslot may be detected each time, that is, whether each second timeslot is located in the measurement interval may be cyclically detected, and after each detection is completed, a detection result of whether the second timeslot detected each time is located in the measurement interval may be obtained until a second timeslot that is not located in the measurement interval is detected, in which case, the second timeslot that is not located in the measurement interval may be regarded as a target second timeslot.

In addition, when the cyclic detection is performed to determine whether each second timeslot is located in the measurement interval, optionally, after receiving a TTI message sent by a timer each time after the target first timeslot, the process of determining whether the second timeslot is located in the measurement interval may be performed. That is, a timer may be set inside the terminal, and the timer triggers TTI message transmission once every other time slot, and after the terminal obtains the TTI message triggered by the timer, the terminal may perform the step of detecting whether the current second time slot is located in the measurement interval, so as to obtain the detection result each time. The Timer may also be referred to as a Slot Timer (denoted as Slot Timer), and may trigger TTI message transmission once every other Slot; the length of one slot can be determined according to the slot length in NR and the data processing performance of the terminal.

S2044, executing a parameter loading validation process in the target second timeslot.

In this step, after the target second timeslot that is not within the measurement interval is obtained, a parameter loading validation process may be performed in the target second timeslot, where the parameter in the parameter loading validation process may include radio frequency parameters and/or baseband parameters, where the parameter may be parameters of the new BWP after the handover, and the new BWP after the handover may be recorded as the target BWP, and then the parameter loading validation process may be optionally performed, where the radio frequency parameters of the target BWP after the handover and/or the baseband parameters of the target BWP may be loaded, and then the radio frequency parameters of the target BWP and/or the baseband parameters of the target BWP may be validated at a boundary time of the second timeslot, and then the terminal may start to perform uplink and downlink data transceiving according to the radio frequency parameters of the target BWP and/or the baseband parameters of the target BWP in the target second timeslot.

In this embodiment, whether each second time slot after the target first time slot is located in the measurement interval is sequentially detected until the target second time slot not located in the measurement interval is detected, and the parameter loading validation process is executed in the target second time slot, so that the detection is performed according to the time slots, the terminal can accurately execute the neighbor measurement process in the measurement interval, the accurate execution of the neighbor measurement process is ensured, and the mobility of the terminal is accurately ensured.

The foregoing embodiments have mentioned that the terminal may be triggered to perform the BWP handover procedure, and the specific triggering method is not specifically mentioned, and the following embodiments mainly describe the specific triggering method.

In another embodiment, the triggering method of the BWP switching process includes any one of the following triggering methods: a triggering mode based on Radio Resource Control (RRC); a triggering mode based on a timeout Timer; a triggering manner based on downlink control information, DCI.

Here, the triggering method based on the radio resource control RRC and the triggering method based on the downlink control information DCI may both be triggering instructions sent by the base station to the terminal, that is, the terminal may perform the BWP handover procedure after receiving the triggering instruction based on the RRC or the triggering instruction based on the DCI. For the triggering method based on the timeout Timer, a Timer may be set inside the terminal, and when the Timer is overtime, the terminal is triggered to execute the BWP handover procedure; of course, it may also be that a timer is set inside the base station, and when the timer is overtime, the base station sends a trigger instruction to the terminal to instruct the terminal to execute the BWP handover procedure.

When a terminal is scheduled to perform a BWP handover procedure by using any of the three triggering methods, there is usually a handover delay in which the terminal cannot transmit and receive a traffic signal, and the BWP handover delay for scheduling the terminal based on the DCI triggering method is defined most strictly, and the specific definition can be seen in table 3 below:

TABLE 3

Specifically, a schematic diagram of BWP handover delay based on the DCI triggering manner may be shown in fig. 8. After receiving the DCI trigger instruction instructing execution of the BWP switching process, the DCI demodulation process may be performed first, that is, the DCI parameters may be demodulated, then the radio frequency parameters/baseband parameters of the new BWP may be calculated, and after the calculation is completed, the time of the measurement interval may be waited to elapse, and after the time of the measurement interval elapses, the radio frequency parameters/baseband parameters of the new BWP are loaded and validated, and the new BWP is enabled to perform uplink and downlink data transceiving.

In addition, it should be noted that, because the BWP handover delay definition based on the DCI trigger mode is the most strict, in the DCI trigger mode, the BWP handover procedure executed by the scheme of the embodiment of the present application can ensure that the terminal can accurately perform the neighbor cell measurement process, and accordingly, in the case of the RRC trigger mode and the Timer trigger mode, the terminal can also ensure that the terminal can accurately perform the neighbor cell measurement process.

In this embodiment, the BWP handover procedure may be triggered by any one of three triggering manners, i.e., a triggering manner based on RRC, a triggering manner based on timeout Timer, and a triggering manner based on DCI, so as to ensure that the BWP handover procedure and the neighbor cell measurement procedure can be implemented regardless of the triggering manner.

In order to better explain the technical solutions of the present application, the following detailed descriptions are made in conjunction with the prior art and a specific embodiment.

In the prior art, for a scenario in which a measurement interval MG is located after a trigger time of a BWP switching process, referring to the BWP switching process shown in fig. 9, the BWP switching process is triggered first, data reception on the current BWP is stopped, radio frequency parameters/baseband parameters on the new BWP are calculated, radio frequency parameters/baseband parameters on the new BWP are loaded, and hardware of the terminal takes effect before a next slot boundary of a slot occupied by the radio frequency parameters/baseband parameters calculation on the current new BWP.

Referring to fig. 10, a timing diagram of a BWP switching flow based on a DCI trigger mode is shown, in the prior art, generally, a DCI parameter (where N is a positive integer greater than 0) related to BWP switching is received in a slot N +2, and after the DCI parameter is demodulated, all configuration information for data transceiving after the current slot N +2 and the current slot N +2 are deleted immediately; and immediately starting the calculation process of the radio frequency parameters/baseband parameters of the new BWP, loading the radio frequency parameters/baseband parameters of the new BWP before the next slot N +3 boundary, and enabling the radio frequency parameters/baseband parameters of the new BWP to take effect. And then, starting at the slot N +3, the terminal can receive and transmit uplink and downlink data according to the newly configured radio frequency parameters/baseband parameters. By adopting the mode, if the above scenes are always repeated, the NR adjacent region measurement which needs to be realized by the measurement interval can not be carried out all the time, and the mobility of the terminal is influenced; in addition, if a certain measurement interval after the BWP handover procedure based on the DCI trigger mode is assumed to be allocated to the use in the abnormal mode, NR "new rf parameters/baseband parameters loading and validation" is directly performed without information exchange, which may directly result in abnormal data reception in the abnormal mode.

In order to solve the above problem, the present application provides the following specific BWP switching flow. Referring to the flowchart shown in fig. 11, first, a BWP switching process is triggered, data reception on the current BWP is stopped, the rf/baseband parameter calculation on the new BWP is performed, and it is detected whether the next slot (denoted as the first slot) of the slot occupied by the rf/baseband parameter calculation on the current new BWP is within the measurement interval, that is, it is determined whether the next slot of the occupied slot is within the measurement interval, if not, the rf/baseband parameter loading on the new BWP is performed, and at the same time, the hardware of the terminal takes effect before the next slot boundary. If yes, skipping to a time slot timer process, wherein the process is firstly to wait for message triggering of the next TTI, and detects whether the next time slot (marked as a second time slot) after the first time slot is in a measurement interval or not when the next time slot is triggered, if the second time slot is in the measurement interval, returning to the step of executing message triggering of waiting for the next TTI, and if the second time slot is not in the measurement interval, executing radio frequency parameter/baseband parameter loading on a new BWP, and enabling the hardware of the terminal to take effect before the next time slot boundary of the second time slot.

Referring to the timing chart shown in fig. 12, the timing process of the embodiment of the present application is as follows:

(1) Neighbor cell measurement data reception in a measurement interval (from Slot N +3 to Slot N + 8) can be configured in advance at the head of the current Slot N + 2; the neighbor cell measurement data may include at least one of co-frequency cell data, inter-frequency cell data, and inter-mode data;

(2) Demodulating DCI parameters sent by a base station in the first 3 symbols (symbol) of the slot N +2 of the current time slot;

(3) Immediately deleting the current slot (slot N + 2) and all downlink data reception after the current slot (slot N + 2);

(4) Starting the calculation of the radio frequency parameters/baseband parameters on the new BWP, and not starting the parameter loading process of hardware immediately after the calculation is finished;

(5) Each slot has a TTI trigger message, starting to detect from slot N +3 whether it and each subsequent slot are within a measurement interval, and checking that next slot N +9 is not within the measurement interval at slot N +8, the terminal can perform a hardware loading process for starting a new BWP parameter after setting an end point of neighbor measurement of current slot N +8, so as to ensure that the new BWP parameter takes effect on the hardware of the terminal before the boundary of slot N + 9;

(6) At the beginning of slot N +9, the terminal may use the parameters of the new BWP to perform uplink and downlink data transceiving.

It should be understood that, although the steps in the flowcharts related to the embodiments as described above are sequentially displayed as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.

Based on the same inventive concept, the present application further provides a BWP switching device for implementing the BWP switching method mentioned above. The solution to the problem provided by the apparatus is similar to the solution described in the above method, so the specific limitations in one or more embodiments of the BWP switching apparatus provided below can refer to the limitations in the BWP switching method in the above, and details are not described here.

In one embodiment, as shown in fig. 13, there is provided a BWP switching apparatus including: a first execution module 11 and a second execution module 12, wherein:

a first execution module 11, configured to confirm that a parameter loading validation process in the BWP switching flow conflicts with a neighbor cell measurement process, and execute the neighbor cell measurement process;

a second executing module 12, configured to confirm that the neighboring cell measurement process is completed, and execute the parameter loading validation process.

In another embodiment, another BWP switching device is provided, and on the basis of the above embodiment, the above first executing module 11 may include a first confirming unit and a determining unit, where:

a first confirming unit for confirming whether the first time slot is located in the measurement interval; wherein, the first time slot is the next time slot of the time slot occupied by the parameter calculation process in the BWP switching process;

and a determining unit, configured to determine the first time slot as a target first time slot if the first time slot is located in the measurement interval, and determine that the parameter loading validation process conflicts with the neighbor measurement process.

In another embodiment, another BWP switching device is provided, and on the basis of the above embodiment, the second execution module 12 may include a second confirmation unit and an execution unit, where:

a second determining unit, configured to detect whether each second time slot subsequent to the target first time slot is located in the measurement interval in sequence until a target second time slot that is not located in the measurement interval is detected; the second time slots are adjacent in time sequence;

and the execution unit is used for executing the parameter loading validation process in the target second time slot.

Optionally, the second determining unit is specifically configured to, after receiving a TTI message sent by a timer each time after the target first time slot, execute a procedure of detecting whether the second time slot is located in the measurement interval.

Optionally, the timer triggers TTI message transmission once every other timeslot.

In another embodiment, another BWP switching device is provided, and on the basis of the foregoing embodiment, the second execution module 12 may further include a loading unit, configured to load radio frequency parameters of the target BWP after switching and/or baseband parameters of the target BWP.

In another embodiment, on the basis of the above embodiment, the triggering manner of the BWP switching flow includes any one of the following triggering manners: a triggering mode based on Radio Resource Control (RRC); a triggering mode based on a timeout Timer; a triggering manner based on downlink control information, DCI.

The various modules in the BWP switching device described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules may be embedded in hardware or may be independent of a processor in the terminal, or may be stored in a memory of the terminal in the form of software, so that the processor can call and execute operations corresponding to the above modules.

In one embodiment, a terminal is provided, an internal structure of which may be as shown in fig. 14. The terminal includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input device. The processor, the memory and the input/output interface are connected by a system bus, and the communication interface, the display unit and the input device are connected by the input/output interface to the system bus. Wherein the processor of the terminal is configured to provide computing and control capabilities. The memory of the terminal comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The input/output interface of the terminal is used for exchanging information between the processor and an external device. The communication interface of the terminal is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a BWP handoff method. The display unit of the terminal is used for forming a visual picture and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the terminal can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a terminal shell, an external keyboard, a touch pad or a mouse and the like.

Those skilled in the art will appreciate that the configuration shown in fig. 14 is a block diagram of only a portion of the configuration associated with the present application and does not constitute a limitation on the terminal to which the present application is applied, and that a particular terminal may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

The embodiment of the application also provides a computer readable storage medium. One or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform the steps of the BWP switching method described above.

Embodiments of the present application further provide a computer program product containing instructions that, when executed on a computer, cause the computer to perform the steps of the BWP switching method described above.

It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data need to comply with the relevant laws and regulations and standards of the relevant country and region.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), magnetic Random Access Memory (MRAM), ferroelectric Random Access Memory (FRAM), phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases involved in the embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A partial bandwidth BWP handover method, the method comprising:

confirming the conflict between the parameter loading effective process and the neighbor cell measurement process in the BWP switching process, and executing the neighbor cell measurement process;

and confirming the execution of the neighbor cell measurement process is finished, and executing the parameter loading validation process.

2. The method according to claim 1, wherein confirming that the parameter loading validation process conflicts with the neighbor measurement process in the BWP handover procedure comprises:

confirming whether the first time slot is positioned in a measurement interval; wherein, the first time slot is the next time slot of the time slot occupied by the parameter calculation process in the BWP switching process;

and if the first time slot is positioned in the measurement interval, determining the first time slot as a target first time slot, and confirming that the parameter loading validation process conflicts with the neighbor measurement process.

3. The method according to claim 2, wherein the confirming that the neighbor cell measurement process is finished, and the performing the parameter loading validation process includes:

sequentially detecting whether each second time slot after the target first time slot is positioned in the measurement interval or not until a target second time slot which is not positioned in the measurement interval is detected; the second time slots are adjacent in time sequence;

and executing the parameter loading validation process in the target second time slot.

4. The method of claim 3, wherein the sequentially detecting whether each second time slot after the target first time slot is within the measurement interval comprises:

and after receiving a Transmission Time Interval (TTI) message sent by a timer every time after the target first time slot, executing a process of detecting whether the second time slot is positioned in the measurement interval.

5. The method of claim 4, wherein the timer triggers a TTI message transmission every other slot.

6. The method of claim 1, wherein performing the parameter load validation process comprises:

and loading the radio frequency parameters of the switched target BWP and/or the baseband parameters of the target BWP.

7. The method according to claim 1, wherein the triggering manner of the BWP handover procedure comprises any one of the following triggering manners:

a triggering mode based on Radio Resource Control (RRC);

a triggering mode based on a timeout Timer;

triggering mode based on Downlink Control Information (DCI).

8. A BWP switching device, wherein said device comprises:

9. A terminal comprising a memory and a processor, the memory having stored thereon a computer program, characterized in that the computer program, when executed by the processor, causes the processor to carry out the steps of the method according to any of claims 1 to 7.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.

11. A computer program product comprising a computer program, characterized in that the computer program realizes the steps of the method of any one of claims 1 to 7 when executed by a processor.