WO2023241247A1

WO2023241247A1 - Bwp switching method and apparatus, terminal, storage medium and product

Info

Publication number: WO2023241247A1
Application number: PCT/CN2023/092024
Authority: WO
Inventors: 吴晓荣
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-06-13
Filing date: 2023-05-04
Publication date: 2023-12-21
Also published as: CN115150957A

Abstract

The present application relates to a BWP switching method and apparatus, a terminal, a storage medium and a product. The method comprises: confirming that a parameter loading and effective process in a BWP switching process conflicts with a neighbor cell measurement process, and executing the neighbor cell measurement process; and confirming that the execution of the neighbor cell measurement process is finished, and executing the parameter loading and effective process. The present method can ensure the normal use of a device when a parameter loading and effective process in a BWP switching process conflicts with a neighbor cell measurement process.

Description

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

This application cites the Chinese patent application titled "BWP switching method, device, terminal, storage medium and product" and application number 2022106597241 submitted on June 13, 2022, which is fully incorporated into this application by reference.

Technical field

The present application relates to the field of communication technology, and in particular to a BWP switching method, device, terminal, storage medium and product.

Background technique

With the continuous development of 5G NR (New Radio, New Radio) technology, BWP (Bandwidth Part, part of the bandwidth), as one of the most critical core technologies of 5G, has also been widely used. BWP is equivalent to dividing the 5G spectrum into many small blocks within a certain period of time. The bandwidth, sub-carrier spacing and other control parameters of each BWP can be different, which is equivalent to dividing a number of different configurations within the 5G cell. sub-cells to adapt to different types of terminals and service types.

The BWP switching process generally includes a demodulation process, a parameter calculation process, and a parameter loading and validation process. Among them, during the demodulation process, the UE demodulates the control parameters issued by the base station to obtain the control parameters required for BWP handover; during the parameter calculation process, the UE performs the handover based on the control parameters required for BWP handover. The parameters of the BWP are calculated to obtain the parameters of the new BWP after the handover; during the parameter loading and validation process, the UE loads and validates the parameters of the new BWP.

However, the existing BWP handover process may cause the UE's radio frequency hardware to malfunction in some cases, thus affecting the normal use of the UE.

Contents of the invention

Embodiments of the present application provide a BWP switching method, device, terminal, storage medium and product, which can avoid the problem of affecting the radio frequency hardware performance of the device when the parameter loading validation process conflicts with the neighboring cell measurement process, thereby ensuring the normal operation of the device. use.

In the first aspect, a BWP switching method is provided, which method includes:

Confirm that the parameter loading and validation process in the BWP handover process conflicts with the neighbor cell measurement process, and execute the above neighbor cell measurement process;

Confirm that the above neighbor cell measurement process is completed and execute the above parameter loading and validation process.

In a second aspect, a BWP switching device is provided, which device includes:

The first execution module is used to confirm that the parameter loading and validation process in the BWP handover process conflicts with the neighbor cell measurement process, and execute the above neighbor cell measurement process;

The second execution module is used to confirm the completion of the above-mentioned neighbor cell measurement process and execute the above-mentioned parameter loading and validation process.

In a third aspect, a terminal is provided, including a memory and a processor. A computer program is stored in the memory. When the computer program is executed by the processor, the computer program causes the processor to execute the steps of the method of the first aspect.

A fourth aspect provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the method of the first aspect are implemented.

A fifth aspect provides a computer program product, including a computer program that implements the steps of the method of the first aspect when executed by a processor.

The above-mentioned BWP handover methods, devices, terminals, storage media and products, when it is confirmed that the parameter loading and validation process in the BWP handover process conflicts with the neighbor cell measurement process, execute the neighbor cell measurement process, and after confirming that the neighbor cell measurement process is completed, execute Parameter loading and validation process. In this method, in the BWP handover process, it is possible to confirm whether the parameter loading and validation process in the process conflicts with the neighboring cell measurement process, and when a conflict occurs, the parameter loading in the BWP handover process will be executed only after the neighbor cell measurement is completed. Validation process, this can avoid the problem of affecting the radio frequency hardware performance of the device when the parameter loading validation process conflicts with the neighboring cell measurement process, thereby ensuring the normal use of the device; further, since the parameter loading validation process and the neighboring cell measurement process can be When a conflict occurs, neighbor cell measurement is performed first, which ensures normal neighbor cell measurement and ensures that the mobility of the device is not affected.

Description of the drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of switching between multiple BWPs;

Figure 2 is a schematic diagram of an example of multiple SSBs in a carrier;

Figure 3 is a schematic structural diagram of an SSB;

Figure 4 is an application environment diagram of the BWP switching method in one embodiment;

Figure 5 is a flow chart of a BWP switching method in an embodiment;

Figure 6 is a flow chart of a BWP switching method in another embodiment;

Figure 7 is a flow chart of a BWP switching method in another embodiment;

Figure 8 is an example diagram of BWP switching delay in another embodiment;

Figure 9 is a schematic diagram of the BWP switching process in the prior art;

Figure 10 is a sequence diagram of the BWP switching process based on DCI triggering in the prior art;

Figure 11 is a schematic diagram of the BWP switching process in this application;

Figure 12 is a sequence diagram of the BWP switching process based on DCI triggering in this application;

Figure 13 is a structural block diagram of a BWP switching device in one embodiment;

Figure 14 is a structural block diagram of a terminal in an embodiment.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

Before introducing the specific embodiments of this application, the definitions of proper nouns involved in this application will be explained in detail.

NR: New Radio, new air interface, a global 5G standard based on OFDM's new air interface design;

OFDM: Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing;

BWP: Bandwidth Part, part of the bandwidth;

SSB: SS/PBCH Block, synchronization signal/physical broadcast channel block;

PSS: main synchronization signal;

SSS: auxiliary synchronization signal;

SMTC: SS/PBCH Block Measurement Time Configuration, SSB measurement time configuration;

RB: Resource Block, resource block;

SCS: Subcarrier Spacing, subcarrier spacing;

BA: Bandwidth Adaptation, bandwidth adaptive change;

NCGI: NR Cell Global Identifier, NR cell global identifier;

Carrier: carrier;

Initial BWP: Initial BWP;

Dedicated BWP: Dedicated BWP;

RF: Radio Frequency, radio frequency;

Rx: Receive, 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: SSB mode;

Subframe: subframe boundary;

RRM: Radio Resource Management, wireless resource management;

Periodicity: period;

Duration: window length;

Offset: time domain offset;

DLBWP: Downlink BWP, downlink SSB;

Intrafrequency measurements with no measurement gaps: Intrafrequency measurements without measurement intervals;

Intrafrequency measurements with measurement gaps: Intrafrequency measurements with measurement intervals;

RSRP: reference signal received power;

RSRQ: reference signal reception quality;

SNR: signal-to-noise ratio;

RACH: random access channel;

RRC Reconfiguration: Reconfiguration;

MGL: Measurement Gap Length, measurement gap length;

MGRP: Measurement Gap Repetition Period, measurement interval repetition period;

MGTA: Measurement Gap Timing Advance, measurement interval timing advance amount;

Gap Offset, the time domain offset of the measurement interval;

TTI: Transmission Time Interval, transmission time interval;

Inter frequency SMTC: Inter frequency SMTC.

Currently, two frequency ranges (bandwidth ranges) are defined in 5GNR, namely FR1 and FR2. The bandwidth range of NR under FR1 is 5MH-100MHz, and the bandwidth range under FR2 is 50MHz-400MHz. Under the two defined bandwidth ranges, if all terminals (i.e. user equipment UE, hereinafter referred to as UE) are required to support the maximum 100MHz bandwidth or 400MHz bandwidth, there will undoubtedly be higher requirements for the performance of the UE. It is not conducive to reducing the cost of UE. In addition, during the actual working process of the UE, it is impossible for each UE to occupy the entire bandwidth at the same time. If the UE always uses the data sampling rate corresponding to the maximum bandwidth, it will undoubtedly be a huge waste. Large bandwidth means high sampling rate, and high sampling rate means high power consumption and high cost. Therefore, NR introduces BWP technology so that the UE's service bandwidth (including uplink/downlink) can be dynamically changed and adjusted. Referring to the schematic diagram of BWP handover shown in Figure 1, it can be seen that the base station network is configured with 3 BWPs (BWP1, BWP2, and BWP3 respectively) on the cell, so that the UE can switch BWP according to different business scenarios and realize the base station switching. Scheduling processing of UE.

In Figure 1, the bandwidth of BWP1 is 40MHz and the subcarrier spacing (SCS) is 15kHz; the bandwidth of BWP2 is 10MHz and the subcarrier spacing (SCS) is 15kHz; the bandwidth of BWP3 is 20MHz and the subcarrier spacing (SCS) is 60kHz. As can be seen from the figure, assuming that at the first moment, the UE's business volume is large, the UE can be scheduled on a large bandwidth (BWP1); at the second moment, the UE's business volume is small, the UE can switch to BWP, that is The UE is scheduled on a small bandwidth (BWP2) to meet basic communication needs; at the third moment, the base station finds that there is a wide range of frequency selective fading in the bandwidth of BWP1, or there is a shortage of resources in the frequency range of BWP1, so it can The UE is triggered to switch BWP again, that is, the UE is scheduled on a new bandwidth (BWP3). The BWP configuration is divided into cell-specific (specific cell) BWP-common (BWP common part) and BWP-specific (specific BWP) BWP-dedicated (BWP dedicated part); the common part is through signaling Serving Cell Config Common ( Serving Cell General Configuration) is configured, and the dedicated part is configured through signaling Serving Cell Config (Serving Cell Configuration).

It can be seen from the above description that the terminal can switch BWP to implement different services at low cost and to meet demand. Then when the terminal is actually switching BWP, the base station usually triggers the terminal to perform the BWP switching process at the trigger time point. At this time, the terminal will stop sending and receiving data on the current BWP and perform the parameter calculation process of the new BWP. After the calculation is completed, the new BWP is loaded. The parameters of the BWP and the radio frequency hardware of the terminal can take effect before the next time slot boundary. The parameters of the new BWP can be completed before the BWP switch is completed, and data transmission and reception can continue on the new BWP. However, during the actual communication process, the terminal will also continuously measure the signals of neighboring cells and report them to the base station (ie, perform neighbor cell measurements) to implement cell handover. When the terminal happens to encounter neighbor cell measurements during the BWP handover process, using the above technology to perform BWP handover cannot ensure that the terminal's radio frequency hardware can send and receive normal data, thus affecting the normal use of the terminal.

It should be noted that the inventor has exerted creative efforts in determining the above technical problem and the following specific technical solutions to solve the technical problem.

The following describes the relevant content of neighbor cell measurement involved in the embodiments of the present application.

Neighbor cell measurement refers to the UE measuring the signal of each adjacent cell in a specific time window, and is mainly used to implement mobility management of the UE in the 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 Figure 2, two adjacent cells can be seen (NCGIs are 5 and 6 respectively) On the same carrier, the BWP dynamically adjusted when the UE performs services in the connected state may cover the SSBs of neighboring cells. Obviously these SSB neighboring cells belong to inter-frequency neighboring cells; on one cell, another inter-frequency neighboring cell needs to be measured. area, the network generally needs to configure the measurement interval (MG) for the UE, and punch holes in the service time to realize data reception and measurement of inter-frequency neighboring cells; of course, the measurement of inter-frequency neighboring cells here is just an example, and the actual neighboring cell measurement In the process, same-frequency neighbor cell measurement or different-mode measurement can also be performed.

The following describes the SSB involved: SS/PBCH Block (SSB), as shown in Figure 3, occupies a total of 4 OFDM symbols in the time domain, and occupies a total of 20 RBs in the frequency domain, that is, 240 subcarriers, numbered 0 ~239. In a half-frame carrying SS/PBCH Block (half-frame duration is 5ms), there are at most L candidate moments where SS/PBCH Block can be placed. The index of the first symbol of these candidate moments is determined by the subcarrier spacing SCS. The specific situation As shown in Table 1 below, for the index in the table, index 0 refers to the first symbol of the first slot in the half-frame.

Table 1

The SSB mode and L value in Table 1 above are determined by the measurement frequency of the UE. The SSB time domain period value is {5, 10, 20, 40, 80, 160}ms, within a 5ms length window L SSBs (numbered 0~L-1) form an SS burst set.

Secondly, generally the base station can configure an SMTC for each SSB measurement frequency point that requires RRM. The time configuration is configured on the time axis scale of the serving cell (that is, the cell where the UE currently resides). That is to say, each The SMTC head and tail of the measurement frequency point must be aligned with the Subframe of the main serving cell. From a measurement perspective, the UE will think that SSB outside SMTC does not exist. Among them, SMTC appears at certain intervals in the time domain and has a fixed duration measurement window. The range of Periodicity is {5, 10, 20, 40, 80, 160}ms, and the Duration is {1, 2, 3, 4, 5}ms, Offset is 0 to Periodicity-1, the unit is ms.

In addition, when the UE performs neighbor cell measurement, as mentioned above, it will involve intra-frequency neighbor cell measurement, inter-frequency neighbor cell measurement and hetero-mode measurement (different mode refers to the mode that is different from the mode currently used by the UE. mode, for example, the UE currently uses 4G, and different modes can be 5G, 3G, etc.). There are two reference signals used by NR for RRM measurement: SSB and CSI-RS. The following describes the same-frequency neighbor cell measurement and inter-frequency neighbor cell measurement corresponding to the serving cell, as shown in Table 2:

Table 2

SSB same-frequency measurement in general connection state, depending on whether SS-BLOCK (ie SSB) is in DL BWP, is divided into "Intrafrequency measurements with no measurement gaps" that do not need to use the measurement interval MG, and "Intrafrequency measurements with" that need to use MG measurement gaps”. CSI co-frequency measurement must be in DL BWP and does not require the use of MG. The introduction of SSB inter-frequency measurement in R16 does not require MG. This depends on the UE's reporting capability to the base station. Therefore, whether to use MG for measurement on NR does not have a simple correspondence with intra-frequency/inter-frequency measurement.

Furthermore, the above mentioned neighbor cell measurement refers to the UE measuring the signal of each adjacent cell in a specific time window. The specific time window here is configured by the base station for the UE, that is, the base station can generally configure the UE to perform measurement in a specific time window. The time window performs intra-frequency (intra-frequency) measurement, inter-frequency (inter-frequency) measurement, and inter-mode measurement (inter-RAT) to obtain measurement results such as RSRP, RSRQ or SNR of each measurement cell. This specific time The window is the measurement interval (can be referred to as MG or Gap); according to the protocol, the UE cannot receive or send any service data within the measurement interval unless it initiates a RACH process; the measurement interval is configured through signaling RRC Reconfiguration.

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

Measurement interval length MGL, value range {1.5, 3, 3.5, 4, 4.5, 6}ms;

Measurement interval repetition period MGRP, value range {20, 40, 80, 160}ms;

Measurement interval timing advance MGTA, value range {0, 0.25, 0.5}ms;

The time domain offset Gap Offset of the measurement interval, the value range is 0~MGRP-1, the unit is ms.

Based on the above configuration information, the UE can calculate the frame number SFN and subframe number where the first subframe of each measurement interval is located, where SFN mod T=FLOOR(GapOffset/10); subframe=GapOffset mod 10; T=MGRP/ 10; and the UE requires the MGTA to stop the radio frequency sending and receiving operations of any service before the measurement interval subframe. The interval mode of the measurement interval. Compared with the original two measurement interval modes of LTE, NR has increased to 24 interval modes.

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

The BWP switching method provided by the embodiment of the present application can be applied in the application environment as shown in Figure 4. Among them, the terminal 102 communicates with the base station 104 through the network. In the BWP handover process, the base station 104 can send a handover trigger instruction to the terminal 102, and the terminal 102 can execute the BWP handover process after receiving the handover trigger instruction. Among them, the terminal 102 can be, but is not limited to, various personal computers, laptops, smart phones, tablets, Internet of Things devices and portable wearable devices. The Internet of Things devices can be smart speakers, smart TVs, smart air conditioners, smart vehicle-mounted devices, etc. . Portable wearable devices can be smart watches, smart bracelets, head-mounted devices, etc. The base station 104 may be a 2G base station, a 3G base station, a 4G base station, a 5G base station, or the like.

In one embodiment, as shown in Figure 5, a BWP handover method is provided. This embodiment relates to the specific process of how to implement BWP handover when the BWP handover process conflicts with the neighbor cell measurement process. Taking this method applied to the terminal in Figure 1 as an example, the following steps may be included:

S202: Confirm that the parameter loading and validation process in the BWP handover process conflicts with the neighbor cell measurement process, and execute the above neighbor cell measurement process.

In this step, when the BWP handover process is triggered, it can be confirmed whether the parameter loading and validation process conflicts with the neighboring cell measurement process. Among them, the BWP handover process can be triggered by the base station or the terminal. In short, the terminal can be triggered to execute the BWP handover process. Here, after the terminal is triggered to perform the BWP switching process, the terminal is still on the currently used BWP. It can first perform a demodulation process of control parameters and a calculation process of new BWP parameters. The demodulation process of control parameters here mainly includes control parameters of the new BWP that the terminal needs to switch to, control parameters for implementing terminal scheduling, etc.

In NR, when the terminal actually performs the BWP handover process, judging from the signaling source triggered by the base station, the neighbor cell measurement process and the BWP handover process are independent of each other, and their processing mechanisms are completely controlled by the terminal. In this case, it is inevitable that when the terminal performs the BWP handover process, it may also need to perform the neighbor cell measurement process, causing a conflict between the BWP handover process and the neighbor cell measurement process.

Specifically, after the terminal completes the calculation process of the new BWP parameters and before executing the parameter loading and validation process, the terminal can detect whether neighbor cell measurement is required. If neighbor cell measurement is required, it indicates that the parameter loading validation process is the same as the neighbor cell measurement process. Conflict arises. If the terminal detects that the parameter loading and validating process in the BWP handover process conflicts with the neighboring cell measurement process, it can be confirmed that when the parameter loading and validating process conflicts with the neighboring cell measurement process, the neighboring cell measurement process will be performed first.

S204: Confirm that the above neighbor cell measurement process is completed, and execute the above parameter loading and validation process.

In this step, the terminal may first perform the neighboring cell measurement process, wait for the completion of the neighboring cell measurement process, and then perform the parameter loading and validation process.

In the above BWP handover method, after the BWP handover process is triggered, and when it is confirmed that the parameter loading and validation process in the BWP handover process conflicts with the neighbor cell measurement process, the neighbor cell measurement process is executed, and after it is confirmed that the neighbor cell measurement process is completed, the parameters are executed. Loading the effective process. In this method, in the BWP handover process, it is possible to confirm whether the parameter loading and validation process in the process conflicts with the neighboring cell measurement process, and when a conflict occurs, the parameter loading in the BWP handover process will be executed only after the neighbor cell measurement is completed. Validation process, this can avoid the problem of affecting the radio frequency hardware performance of the device when the parameter loading validation process conflicts with the neighboring cell measurement process, thereby ensuring the normal use of the device; further, since the parameter loading validation process and the neighboring cell measurement process can be When a conflict occurs, neighbor cell measurement is performed first, which ensures normal neighbor cell measurement and ensures that the mobility of the device is not affected.

The above embodiment mentioned that the terminal can detect a conflict between the parameter validation process in the BWP handover process and the neighbor cell measurement process. The specific process of how to detect the conflict will be described in detail below.

In another embodiment, another BWP switching method is provided. Based on the above embodiment, as shown in Figure 6, the above S202 may include the following steps:

S2022. Confirm whether the first time slot is 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 above BWP handover process.

In this step, after the base station configures the measurement interval for the terminal, the terminal can obtain the first limit and the second limit at both ends of the measurement interval (where the first limit is smaller than the second limit), and determine the first time Whether the first time slot is greater than the first limit and less than the second limit; if the first time slot is greater than the first limit and less than the second limit, it is determined that the first time slot is within the measurement interval; otherwise, it is determined that the first time slot is not within the measurement interval. within the measurement interval.

When the first time slot is used for judgment, the starting time of the first time slot may be used for judgment, or the ending time of the first time slot may be used for judgment, or the first time slot may be used for judgment. The judgment can be made at any time within the slot. In short, it can be detected whether the first time slot is within the measurement interval.

Further, when the terminal executes the BWP handover process, after completing the parameter calculation process in the BWP handover process, it can obtain the time slot in which the current parameter calculation process is located, that is, the time slot occupied by the parameter calculation process is obtained. The time slot can be the time At any position within a slot, the next adjacent time slot to the occupied time slot is the first time slot here.

S2024: If the first time slot is located within the measurement interval, determine the first time slot as the target first time slot, and confirm that the parameter loading validation process conflicts with the neighboring cell measurement process.

In this step, when it is determined that the first time slot is within the measurement interval, that is, the terminal needs to perform neighbor cell measurement in the first time slot, and if the terminal directly executes the parameter loading and validation process after completing the parameter calculation process, then in The terminal in the first time slot must use the parameters of the new BWP to send and receive data, and the neighboring cell measurement process uses the parameters of the current BWP for measurement. Then the neighboring cell measurement process is performed at this time, which will inevitably cause the terminal's radio frequency There is a conflict in hardware data transmission and reception, that is, a conflict occurs between the parameter loading and validation process and the neighboring cell measurement process.

At this time, the terminal may record the first time slot located within the measurement interval as the target first time slot, and determine that the parameter loading validation process in the above BWP handover process conflicts with the neighboring cell measurement process.

In this embodiment, by confirming whether the next time slot of the time slot occupied by the parameter calculation process in the BWP handover process is within the measurement interval, if it is within the measurement interval, the first time slot is used as the target first time slot, and the BWP is determined The parameter loading and validation process in the handover process conflicts with the neighboring cell measurement process. Here, by confirming whether the next time slot is within the measurement interval, it can be determined more accurately and quickly whether the parameter loading and validation process conflicts with the neighboring cell measurement process, thereby improving the efficiency and accuracy of determining the neighboring cell measurement process.

It is mentioned in the above embodiment that when the parameter loading validation process conflicts with the neighboring cell measurement process, the parameter loading validation process can be executed after the neighbor cell measurement is completed. The following embodiment will specifically describe how to execute the parameter loading validation process after the neighbor cell measurement is completed. The specific process is explained in detail.

In another embodiment, another BWP switching method is provided. Based on the above embodiment, as shown in Figure 7, the above S204 may include the following steps:

S2042, sequentially detect whether each second time slot after the target first time slot is within the measurement interval, until the target second time slot that is not within the above-mentioned measurement interval is detected; the above-mentioned second time slots are adjacent in time sequence .

In this step, after it is detected that the first time slot of the target is located within the measurement interval, the detection of each second time slot after the first time slot of the target can be continued, where each second time slot is adjacent in time sequence. , that is, the times corresponding to each second time slot are different. Here, the method of detecting whether each second time slot is located within the measurement interval can be the same as the above-mentioned method of detecting whether the first time slot is located within the measurement interval, that is, it can also be to detect whether the second time slot is located at the first limit value at both ends of the measurement interval. and within the second limit.

In addition, when detecting whether each second time slot is within the measurement interval, only one time slot can be detected at a time, that is, it can be cyclically detected whether each second time slot is within the measurement interval. After each detection is completed, we can obtain The detection result of each detected second time slot is whether it is within the measurement interval until the second time slot that is not within the measurement interval is detected. At this time, the second time slot that is not within the measurement interval can be recorded as the target. Second time slot.

In addition, when the above-mentioned cyclic detection of whether each second time slot is within the measurement interval, optionally, after the above-mentioned target first time slot, each time the transmission time interval TTI message sent by the timer is received, , execute the process of detecting whether the above-mentioned second time slot is located within the measurement interval. That is to say, a timer can be set inside the terminal, which triggers a TTI message transmission every other time slot. After the terminal obtains the TTI message triggered by the timer, it can detect whether the current second time slot is in the measurement range. Steps within the interval to obtain each detection result. Among them, the timer here can also be called a slot timer (recorded as Slot Timer), which can trigger a TTI message transmission every other slot; for the length of a slot, it can be based on the slot length in NR And the data processing performance of the terminal is determined.

S2044: Execute the parameter loading and validation process in the above target second time slot.

In this step, after obtaining the target second time slot that is not within the measurement interval, the parameter loading and validation process can be performed in the target second time slot. Here, the parameters in the parameter loading and validation process can include radio frequency parameters and/or Or baseband parameters. This parameter can be the parameter of the new BWP after the switch. The new BWP after the switch can be recorded as the target BWP. Then the above execution parameter loading and validation process is optional. It can be the radio frequency parameters of the target BWP after the switch. and/or the baseband parameters of the target BWP. After that, the radio frequency parameters of the target BWP and/or the baseband parameters of the target BWP can be made effective at the boundary moment of the second time slot. Then in the target second time slot, the terminal can start to follow the The radio frequency parameters of the target BWP and/or the baseband parameters of the target BWP are used to transmit and receive uplink and downlink data.

In this embodiment, by sequentially detecting whether each second time slot after the target first time slot is within the measurement interval, until the target second time slot that is not within the measurement interval is detected, and within the target second time slot Executing the parameter loading and validation process, such that detection is performed one by one, can accurately enable the terminal to perform the neighbor cell measurement process within the measurement interval, ensuring the accurate execution of the neighbor cell measurement process, thereby accurately ensuring the mobility of the terminal.

The above embodiments mentioned that the terminal can be triggered to perform the BWP switching process, but the specific triggering method is not specifically mentioned. The following embodiments mainly describe the specific triggering method.

In another embodiment, the triggering method of the above-mentioned BWP handover process includes any one of the following triggering methods: a triggering method based on radio resource control RRC; a triggering method based on a timeout Timer; a triggering method based on downlink control information DCI .

Among them, the triggering method based on radio resource control RRC and the triggering method based on downlink control information DCI can both be used. It is a trigger command sent by the base station to the terminal. That is, the terminal can execute the BWP handover process after receiving the RRC-based trigger command or the DCI-based trigger command. For the triggering method based on timeout Timer here, it can be that a timer is set inside the terminal. When the timer times out, the terminal is triggered to perform the BWP handover process; of course, it can also be set up with a timer inside the base station. When the timer times out, the base station sends a trigger instruction to the terminal, instructing the terminal to perform the BWP handover process.

When any of the above three triggering methods is used to schedule the terminal to perform the BWP handover process, there will usually be a handover delay. Within this delay, the terminal cannot send and receive service signals, and the DCI triggering method is The definition of BWP handover delay for scheduling terminals is the strictest. For specific definitions, see Table 3 below:

table 3

The specific schematic diagram of the BWP switching delay based on the DCI trigger method can be seen in Figure 8. After receiving the DCI trigger instruction instructing to execute the BWP switching process, the DCI demodulation process can be performed first, that is, the DCI parameters are demodulated, and then the radio frequency parameters/baseband parameters of the new BWP can be calculated. After the calculation is completed, you can wait The measurement interval time has passed, and after the measurement interval time has passed, the radio frequency parameters/baseband parameters of the new BWP are loaded and validated, and the new BWP is enabled to send and receive uplink and downlink data.

In addition, it should be noted that since the BWP handover delay based on the DCI trigger method is the most stringent, under the DCI trigger method, using the solution of the embodiment of the present application to perform the BWP handover process can ensure that the terminal can accurately perform the neighbor cell measurement process. , Correspondingly, in the case of the RRC-based triggering method and the Timer-based triggering method, it can also be ensured that the terminal can accurately perform the neighbor cell measurement process.

In this embodiment, the BWP handover process can be triggered by any of the three triggering methods: radio resource control (RRC)-based triggering, timeout Timer-based triggering, and downlink control information DCI-based triggering. , this can ensure that the BWP handover process and neighbor cell measurement process can be realized regardless of the triggering mode.

In order to facilitate a better explanation of the technical solution of the present application, the technical solution of the present application will be described in detail below with reference to the prior art and a specific embodiment.

In the prior art, for the scenario where the triggering moment of the BWP handover process is followed by the measurement interval MG, refer to the BWP handover process shown in Figure 9. The BWP handover process is first triggered, data reception on the current BWP is stopped, and data reception on the new BWP is stopped. RF parameters/baseband parameters are calculated, RF parameters/baseband parameters are loaded on the new BWP, and the terminal hardware takes effect before the next time slot boundary of the time slot occupied by the current RF parameters/baseband parameter calculations on the new BWP.

Referring also to the BWP handover process sequence diagram based on the DCI triggering method shown in Figure 10, in the prior art, the DCI parameters related to the BWP handover are generally received in the time slot slotN+2 (where N is a positive integer greater than 0). After demodulating the DCI parameters, immediately delete the current time slot slot N+2 and all configuration information for data transmission and reception after the current time slot slot N+2; and immediately start the calculation of the radio frequency parameters/baseband parameters of the new BWP process, load the RF parameters/baseband parameters of the new BWP before the next slot N+3 boundary, and make the RF parameters/baseband parameters of the new BWP effective. Then starting from slot N+3, the terminal can transmit and receive uplink and downlink data according to the newly configured radio frequency parameters/baseband parameters. In this way, if the above scenario is always repeated, the NR neighbor cell measurement that needs to be implemented using the measurement interval will never be carried out, affecting the mobility of the terminal; in addition, if the BWP handover process based on DCI trigger mode is If a certain measurement interval is allocated to a different mode, and NR "loading and taking effect of new RF parameters/baseband parameters" is directly performed without information exchange, it is likely to directly lead to abnormal data reception in the different mode.

In order to solve the above problems, this application provides the following specific BWP switching process. Referring to the flow chart shown in Figure 11, first trigger the BWP switching process, stop data reception on the current BWP, calculate the radio frequency parameters/baseband parameters on the new BWP, and detect the time slot occupied by the current radio frequency parameters/baseband parameter calculation on the new BWP. Whether the next time slot (recorded as the first time slot) is within the measurement interval, that is, determine whether the next time slot of the occupied time slot is within the measurement interval. If not, execute the radio frequency parameters/baseband parameters on the new BWP is loaded, and the terminal's hardware takes effect before the next time slot boundary. If so, jump to the time slot timer process. In this process, the first step is to wait for the next TTI message to trigger, and when triggered, detect whether the next time slot after the first time slot (recorded as the second time slot) is in Within the measurement interval, if the second time slot is within the measurement interval, return to the step of waiting for the message trigger of the next TTI. If the second time slot is not within the measurement interval, perform loading of radio frequency parameters/baseband parameters on the new BWP. At the same time, the terminal's hardware takes effect before the next time slot boundary of the second time slot.

Referring to the timing diagram shown in Figure 12, the timing process of the embodiment of the present application is as follows:

(1) The head of the current time slot slot N+2 will be configured in advance to receive neighboring cell measurement data within the measurement interval (Slot N+3 to Slot N+8); the neighboring cell measurement data here can include co-frequency cell data, At least one of inter-frequency cell data and inter-mode data;

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

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

(4) Start the calculation of RF parameters/baseband parameters on the new BWP. The hardware parameter loading process will not be started immediately after the calculation is completed;

(5) Each time slot has a TTI trigger message. Starting from time slot N+3, it is detected whether it and each subsequent time slot are within the measurement interval. The next time slot is checked at time slot N+8. N+9 is not the measurement interval, so the terminal can set the neighbor cell measurement end point of the current time slot slot N+8 and perform the hardware loading process of parameters to start the new BWP to ensure that the new BWP is before the boundary of the time slot slot N+9. The parameters take effect on the terminal hardware;

(6) Starting from slot N+9, the terminal can use the parameters of the new BWP to send and receive uplink and downlink data.

It should be understood that although the steps in the flowcharts involved in the above-mentioned embodiments are shown in sequence as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated in this article, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in the flowcharts involved in the above embodiments may include multiple steps or stages. These steps or stages are not necessarily executed at the same time, but may be completed at different times. The execution order of these steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

Based on the same inventive concept, embodiments of the present application also provide a BWP switching device for implementing the above-mentioned BWP switching method. The solution to the problem provided by this device is similar to the solution recorded in the above method. Therefore, for the specific limitations in one or more BWP switching device embodiments provided below, please refer to the above limitations on the BWP switching method. I won’t go into details here.

In one embodiment, as shown in Figure 13, a BWP switching device is provided, including: a first execution module 11 and a second execution module 12, wherein:

The first execution module 11 is used to confirm that the parameter loading and validation process in the BWP handover process conflicts with the neighbor cell measurement process, and execute the above neighbor cell measurement process;

The second execution module 12 is used to confirm the completion of the above-mentioned neighbor cell measurement process and execute the above-mentioned parameter loading and validation process.

In another embodiment, another BWP switching device is provided. Based on the above embodiment, the above-mentioned first execution module 11 may include a first confirmation unit and a determination unit, wherein:

The first confirmation unit is used to confirm whether the first time slot is within the measurement interval; wherein the above-mentioned first time slot is the next time slot of the time slot occupied by the parameter calculation process in the above-mentioned BWP handover process;

A determining unit configured to determine the first time slot as the target first time slot if the first time slot is located within the measurement interval, and confirm that the parameter loading validation process conflicts with the neighboring cell measurement process.

In another embodiment, another BWP switching device is provided. Based on the above embodiment, the above-mentioned second execution module 12 may include a second confirmation unit and an execution unit, wherein:

The second confirmation unit is configured to sequentially detect whether each second time slot after the above-mentioned target first time slot is located within the above-mentioned measurement interval, until a target second time slot that is not within the above-mentioned measurement interval is detected; each of the above-mentioned second time slots is located within the above-mentioned measurement interval. Time slots are temporally adjacent;

An execution unit, configured to execute the above parameter loading and validation process in the above target second time slot.

Optionally, the above-mentioned second confirmation unit is specifically configured to detect whether the above-mentioned second time slot is within the above-mentioned measurement interval each time after receiving the transmission time interval TTI message sent by the timer after the above-mentioned target first time slot. process.

Optionally, the above timer triggers TTI message transmission every other time slot.

In another embodiment, another BWP switching device is provided. Based on the above embodiment, the second execution module 12 may also include a loading unit, which is used to load the radio frequency of the switched target BWP. parameters and/or the baseband parameters of the target BWP above.

In another embodiment, based on the above embodiment, the triggering method of the above-mentioned BWP handover process includes any one of the following triggering methods: a triggering method based on radio resource control RRC; a triggering method based on a timeout Timer; a triggering method based on downlink The triggering method of link control information DCI.

Each module in the above-mentioned BWP switching device can be implemented in whole or in part by software, hardware and combinations thereof. Each of the above modules can be embedded in or independent of the processor in the terminal in the form of hardware, or can be stored in the memory of the terminal in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

In one embodiment, a terminal is provided, the internal structure diagram of which can be shown in Figure 14. The terminal includes a processor, memory, input/output interface, communication interface, display unit and input device. Among them, the processor, memory and input/output interface are connected through the system bus The communication interface, display unit and input device are connected to the system bus via the input/output interface. Among them, the processor of the terminal is used to provide computing and control capabilities. The memory of the terminal includes non-volatile storage media and internal memory. The non-volatile storage medium stores operating systems and computer programs. This internal memory provides an environment for the execution of operating systems and computer programs in non-volatile storage media. The terminal's input/output interface is used to exchange information between the processor and external devices. The communication interface of the terminal is used for wired or wireless communication with external terminals. The wireless mode can be implemented through WIFI, mobile cellular network, NFC (Near Field Communication) or other technologies. The computer program, when executed by the processor, implements a BWP switching method. The display unit of the terminal is used to form a visually visible picture, and may be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display or an electronic ink display. The input device of the terminal can be a touch layer covered on the display screen, or it can be a button, trackball or touch pad provided on the terminal shell, or it can be an external Keyboard, trackpad or mouse, etc.

Those skilled in the art can understand that the structure shown in Figure 14 is only a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the terminals to which the solution of the present application is applied. Specific terminals may include more than The figures show more or fewer parts, or certain parts combined, or with different arrangements of parts.

An embodiment of the present application also provides a computer-readable storage medium. One or more non-volatile computer-readable storage media containing computer-executable instructions, which when executed by one or more processors, cause the processor to perform the steps of the above-mentioned BWP switching method.

Embodiments of the present application also provide a computer program product containing instructions that, when run on a computer, cause the computer to execute the steps of the above BWP switching method.

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 used for analysis, stored data, displayed data, etc.) involved in this application are all It is information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with the relevant laws, regulations and standards of relevant countries and regions.

The term "and/or" in this application is just an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, alone There are three situations B. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage. In the media, when executed, the computer program may include the processes of the above method embodiments. Any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetic variable memory (Magnetoresistive Random Access Memory (MRAM), ferroelectric memory (Ferroelectric Random Access Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory may include random access memory (Random Access Memory, RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in many forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM). The databases involved in the various embodiments provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include blockchain-based distributed databases, etc., but are not limited thereto. The processors involved in the various embodiments provided in this application may be general-purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to this.

The technical features of the above embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, all possible combinations should be used. It is considered to be within the scope of this manual.

The above-described embodiments only express several implementation modes of the present application, and their descriptions are relatively specific and detailed, but should not be construed as limiting the patent scope of the present application. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

A partial bandwidth BWP switching method, characterized in that the method includes:

Confirm that the parameter loading and validation process in the BWP handover process conflicts with the neighboring cell measurement process, and execute the neighboring cell measurement process;

Confirm that the neighbor cell measurement process is completed, and execute the parameter loading and validation process.
The method according to claim 1, characterized in that the parameter loading validation process in the confirmation BWP handover process conflicts with the neighboring cell measurement process, including:

Confirm whether the first time slot is 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 handover process;

If the first time slot is located within the measurement interval, the first time slot is determined as the target first time slot, and it is confirmed that the parameter loading validation process conflicts with the neighboring cell measurement process.
The method of claim 2, wherein confirming whether the first time slot is within a measurement interval includes:

Obtain the first limit value and the second limit value at both ends of the measurement interval;

Determine whether the first time slot is greater than the first limit and less than the second limit;

If the first time slot is greater than the first limit and less than the second limit, it is determined that the first time slot is within the measurement interval.
The method of claim 3, further comprising:

If the first time slot is less than or equal to the first limit or greater than or equal to the second limit, it is determined that the first time slot is not within the measurement interval.
The method of claim 4, wherein the first limit is smaller than the second limit.
The method according to claim 2, characterized in that confirming that the neighbor cell measurement process is completed and executing the parameter loading and validating process includes:

Sequentially detect whether each second time slot after the target first time slot is located within the measurement interval until a target second time slot that is not located within the measurement interval is detected; each second time slot is temporally adjacent;

The parameter loading and validation process is performed within the target second time slot.
The method according to claim 6, wherein the sequentially detecting whether each second time slot after the target first time slot is located within the measurement interval includes:

After the target first time slot, each time a transmission time interval TTI message sent by the timer is received, a process of detecting whether the second time slot is located within the measurement interval is executed.
The method according to claim 7, characterized in that the timer triggers TTI message transmission every other time slot.
The method according to claim 8, characterized in that the length of the time slot is a length determined according to the length of the time slot in the new air interface NR and the data processing performance of the terminal.
The method of claim 6, wherein detecting whether each second time slot after the target first time slot is located within the measurement interval includes:

Obtain the first limit value and the second limit value at both ends of the measurement interval;

Determine whether the second time slot is greater than the first limit and less than the second limit;

If the second time slot is greater than the first limit and less than the second limit, it is determined that the second time slot is within the measurement interval.
The method of claim 10, further comprising:

If the second time slot is less than or equal to the first limit or greater than or equal to the second limit, it is determined that the second time slot is not within the measurement interval.
The method according to claim 1, characterized in that said executing the parameter loading validation process includes:

Load the radio frequency parameters of the target BWP after switching and/or the baseband parameters of the target BWP.
The method according to claim 6, wherein performing the parameter loading validation process in the target second time slot includes:

In the target second time slot, the radio frequency parameters of the target BWP after switching and/or the baseband parameters of the target BWP are loaded.
The method of claim 13, further comprising:

In the target second time slot, uplink and downlink data are sent and received according to the radio frequency parameters of the target BWP and/or the baseband parameters of the target BWP after switching.
The method according to claim 1, characterized in that the triggering method of the BWP switching process includes any one of the following triggering methods:

Control the triggering mode of RRC based on radio resources;

Triggering method based on timeout Timer;

Triggering method based on downlink control information DCI.
The method according to claim 1, characterized in that the BWP switching process includes a demodulation process of control parameters, a calculation process of new BWP parameters and a parameter loading and validation process.
A BWP switching device, characterized in that the device includes:

The first execution module is used to confirm that the parameter loading and validation process in the BWP handover process conflicts with the neighbor cell measurement process, and execute the neighbor cell measurement process;

The second execution module is used to confirm the completion of the neighbor cell measurement process and execute the parameter loading and validation process.
A terminal includes a memory and a processor. A computer program is stored in the memory. The characteristic is that when the computer program is executed by the processor, the processor executes any one of claims 1 to 16. The steps of the method described in the item.
A computer-readable storage medium having a computer program stored thereon, characterized in that when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 16 are implemented.
A computer program product, comprising a computer program, characterized in that, when executed by a processor, the computer program implements the steps of the method according to any one of claims 1 to 16.