CN116867003A

CN116867003A - Cell switching method, device, equipment and computer storage medium

Info

Publication number: CN116867003A
Application number: CN202210309661.7A
Authority: CN
Inventors: 邓也; 谭裴; 叶敏; 古莉姗; 蔡金青; 钱振宇; 耿波; 李涛; 尚蔼; 邓柯佳; 杨冉冉
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Group Design Institute Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Group Design Institute Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2023-10-10

Abstract

The embodiment of the application relates to the technical field of wireless networks and discloses a cell switching method, which comprises the following steps: determining an uplink large-traffic terminal according to the buffer status report; monitoring uplink power headroom and collecting measurement reports for the uplink large-traffic terminal; when the uplink power margin is limited, determining the strongest neighbor cell according to the measurement report; and carrying out cell switching on the uplink large-traffic terminal according to the strongest neighbor cell. By the mode, the embodiment of the application improves the accuracy of cell switching.

Description

Cell switching method, device, equipment and computer storage medium

Technical Field

The embodiment of the application relates to the technical field of wireless networks, in particular to a cell switching method, a cell switching device, cell switching equipment and a computer storage medium.

Background

With the great improvement of uplink and downlink rates brought by the 4G/5G network, the data service is blown out for burst. The traditional downlink service is gradually changed into the situation that the uplink and downlink services are balanced and increased. The existing NR (New Radio) side switching method mainly includes coverage-based switching, frequency priority-based switching, operator priority-based switching, service-based switching, uplink interference-based inter-frequency switching, and the like.

The inventors of the present application found in the practice of the examples of the present application that: the traditional NR side switching method has lower switching accuracy in the scene of unbalanced uplink and downlink coverage, thereby causing poor user experience.

Disclosure of Invention

In view of the above problems, embodiments of the present application provide a cell switching method, apparatus, device, and computer storage medium, which are used to solve the problem in the prior art that the switching accuracy is low in a scenario with unbalanced uplink and downlink coverage, thereby causing poor user experience.

According to an aspect of an embodiment of the present application, there is provided a cell handover method, the method including:

determining an uplink large-traffic terminal according to the buffer status report;

monitoring uplink power headroom and acquiring measurement reports for the uplink large-traffic terminal;

when the uplink power margin is determined to be limited, determining a strongest neighbor cell according to the measurement report;

and carrying out cell switching on the uplink large-traffic terminal according to the strongest neighbor cell.

In an alternative, the method further comprises:

determining the data quantity to be scheduled of the terminal according to the buffer status report of the terminal;

and determining whether the terminal is the uplink large-traffic terminal according to the data volume to be scheduled.

In an alternative, the method further comprises:

periodically determining uplink power margin of the uplink large-traffic terminal at a first frequency;

periodically collecting measurement reports of the uplink large-traffic terminals at a second frequency; wherein the second frequency is greater than the first frequency.

In an alternative, the method further comprises:

when the uplink power margin corresponding to a plurality of continuous acquisition periods is determined to be smaller than a margin threshold value, determining that the uplink power margin is limited;

and screening the strongest cell corresponding to the terminal according to the measurement report to obtain the strongest neighbor cell.

In an alternative manner, the measurement report includes a cell identity and a signal strength of the strongest cell; the method further comprises the steps of:

screening the strongest cell according to the neighbor cell relation and the cell identification to obtain a selectable neighbor cell;

and determining the strongest neighbor cell from the selectable neighbor cells according to the signal intensity.

In an alternative, the method further comprises:

screening the selectable neighbor cells according to a cell blacklist to obtain screened neighbor cells;

and determining the strongest neighbor cell from the screened neighbor cells according to the signal intensity.

In an alternative, the method further comprises:

and determining the strongest neighbor cell from the screened neighbor cells according to a preset signal strength threshold and the signal strength.

According to another aspect of an embodiment of the present application, there is provided a cell switching apparatus including:

the first determining module is used for determining the uplink large-traffic terminal according to the buffer status report;

the acquisition module is used for monitoring the uplink power margin of the uplink large-traffic terminal and acquiring a measurement report;

the second determining module is used for determining the strongest neighbor cell according to the measurement report when the uplink power margin is limited;

and the switching module is used for carrying out cell switching on the uplink large-traffic terminal according to the strongest neighbor cell.

According to another aspect of an embodiment of the present application, there is provided a cell handover apparatus including: the device comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete communication with each other through the communication bus;

the memory is configured to store at least one executable instruction that causes the processor to perform operations of an embodiment of a cell handover method as described in any one of the preceding claims.

According to yet another aspect of an embodiment of the present application, there is provided a computer-readable storage medium having stored therein at least one executable instruction for causing a cell handover apparatus to perform the operations of any one of the cell handover method embodiments.

The embodiment of the application determines the uplink large-traffic terminal according to the buffer status report; monitoring uplink power headroom and collecting measurement reports for the uplink large-traffic terminal; when the uplink power margin limit is monitored, determining the strongest neighbor cell randomly according to the measurement report; and finally, carrying out cell switching on the uplink high-traffic terminal according to the strongest neighbor cell, thereby distinguishing the problem that the user experience of the uplink high-power user is poor because the cell switching method aiming at the scene of the uplink high-traffic terminal is not available in the prior art.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present application can be more clearly understood, and the following specific embodiments of the present application are given for clarity and understanding.

Drawings

The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 shows a flow chart of a cell handover method according to an embodiment of the present application;

fig. 2 shows a corresponding relationship diagram of index values and uplink data amounts in the cell handover method according to the embodiment of the present application;

fig. 3 is a schematic flow chart of a cell handover method according to still another embodiment of the present application;

fig. 4 is a schematic flow chart of a cell handover method according to still another embodiment of the present application;

fig. 5 shows a schematic structural diagram of a cell switching device according to an embodiment of the present application;

fig. 6 shows a schematic structural diagram of a cell handover apparatus according to an embodiment of the present application.

Detailed Description

Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein.

Prior to the description of the cell switching method according to the embodiment of the present application, a brief description will be given of the existing cell switching technology.

The existing 5G NR side switching method mainly comprises coverage-based switching, frequency priority-based switching, operator priority-based switching, service-based switching and uplink interference-based pilot frequency switching. The coverage-based handover is a basic function for providing continuous coverage of a network, measurement control is performed after the RRC connection is established, and handover is performed when a target cell meeting the requirements exists, without a decision for starting the handover function.

For a multi-frequency-band same-coverage networking scene, when high-frequency points and low-frequency points are in same coverage, the service is hoped to be carried by a higher frequency band as much as possible, and the low frequency band is idle to ensure continuous coverage, the switching based on the frequency priority can be utilized to achieve the purpose.

The switching based on the priority of the operators aims at the network sharing networking scene, and when different frequency point priority strategies need to be realized among different operators, the flexible networking strategy among operators can be realized by utilizing the switching of the priority of the operators. Cell 1 and Cell 2 are shared cells in the network sharing scenario of operators, where the frequency point of Cell 1 is the high priority frequency point of operator a, and the frequency point of Cell 2 is the high priority frequency point of operator B, so that the function can return the users of the respective operators to the high priority frequency points of the operators.

The service-based inter-frequency switching support configures a corresponding switching target frequency point group for each 5 QI. After the inter-frequency switching function based on the service is started, the gNodeB (5G base station) can continuously monitor the service state of the terminal, if the service QCI changes, the gNodeB can be triggered to send measurement configuration information of a designated frequency point group to the UE (User Equipment), the UE carries out the inter-frequency measurement of the designated frequency point group, and after the gNodeB receives a measurement report of the UE, the gNodeB judges that the UE carries out switching in an optimal candidate target cell suitable for switching.

For the multi-frequency networking scene, if uplink interference exists in a certain frequency point, uplink experience of a user in the frequency point is affected, and the UE can be switched to other different frequency adjacent cells by utilizing the different frequency switching based on the uplink interference as a means for guaranteeing the uplink experience of the user when the serving cell is in strong interference. The current inter-frequency switching scenario supports inter-frequency switching in FR1 FDD, inter-frequency switching in FR1 TDD, and inter-frequency switching from FR1 FDD to FR1 TDD. And the gNodeB judges whether to start the pilot frequency switching function based on the uplink interference according to the uplink interference intensity of the serving cell, if the uplink interference intensity of the serving cell is greater than a certain threshold, the gNodeB is triggered to send pilot frequency measurement control to an uplink packet user with low SRS SINR in the serving cell, the UE performs pilot frequency measurement, and after the gNodeB receives a measurement report of the UE, the gNodeB judges that the UE performs switching in an optimal candidate target cell suitable for switching.

However, with the great increase of the uplink and downlink rates brought by the 4G/5G network, the data service is blown out. The traditional downlink service is gradually changed into the situation that the uplink and downlink services are balanced and increased. Especially from media live service firebreak development. The live broadcast service has higher requirements on uplink speed, time delay and error code. If the live user is in a scene with unbalanced uplink and downlink coverage, the situation of delay, jitter, error code and the like in the live broadcast process is probably caused. At this time, the best solution is to switch such a high traffic UE to a cell with balanced uplink and downlink coverage. The above method in the prior art is not set up for the UE with high uplink traffic, so that the switching accuracy and perceived experience of the existing UE with high uplink traffic are not good.

Before proceeding with the description of the embodiments of the present application, the description of the related terms will be given as follows:

when the UE requests uplink resources from the eNodeB through the SR, it only indicates whether or not it has uplink data to transmit, and does not indicate how much uplink data it needs to transmit. The UE needs to tell the eNodeB through BSR (Buffer Status Report) how much data in its uplink buffer needs to be sent in order for the eNodeB to decide how much uplink resources to allocate to the UE.

Depending on the traffic, the UE may set up a large number of radio bearers (each corresponding to a logical channel), which may cause a large amount of signaling overhead if a BSR is reported for each logical channel. To avoid this, LTE introduced the concept of LCG (Logical Channel Group) and put each logical channel into one LCG (4 total). Instead of reporting one BSR for each logical channel, the UE reports the BSR based on the LCG.

The BSR is reported by the MAC layer BSR MAC ControlElement and contains 2 formats. Short BSR or buffered BSR formats: only BSR of one LCG is reported. The format consists of an LCG ID field and a corresponding Buffer Size field. Long BSR format: the Buffer Size field contains 4 Buffer Size fields corresponding to LCG IDs 0 to 3. I.e. the format will report the Buffer Size of all LCGs together to the eNodeB. The Buffer Size field is 6 bits long, specifying the sum of the valid data available for transmission for all logical channels of the corresponding LCG after all MAC PDUs for the UE within the TTI in which this BSR was sent are generated. The data amount is in bytes (byte) but does not include RLC header and MAC header information.

BSR index value: when the UE expresses the amount of data to be transmitted to the network side, a specific number (for example, 1000001) may be encoded into the BSR information, but the number of bits transmitted in the air interface may be more in this way, so the BSR information is encoded by the protocol using the BSR index value: the 64 index indexes of 0-63 are used to represent different byte ranges, and the space of only 6 bits is enough for the BSR, so that the number of bits transmitted by an air interface is reduced. The index=0 indicates that no data needs to be sent in a certain logical channel group, and index=63 indicates that data exceeding 150 kbytes needs to be sent in a certain logical channel group. For example, when the UE has 30 bytes of data to transmit, the BSR control unit only needs to be filled with 8.

Fig. 1 shows a flowchart of a cell handover method according to an embodiment of the present application, where the method is performed by a computer processing device. The computer processing device may include a cell phone, a notebook computer, and the like. As shown in fig. 1, the method comprises the steps of:

step 10: and determining the uplink large-traffic terminal according to the buffer status report.

In one embodiment of the application, the buffer status report may be Buffer Status Report, i.e., BSR. The UE periodically reports the BSR on PUSCH (Physical Uplink Shared Channel ) using MAC Control Element according to the periodicicbsr-Timer field of MAC-MainConfig in DRB (Data Radio Bearer ) configuration during the connected state. The duration of the timer reported by the periodic BSR is usually in units of subframes, and the current network setting is generally tperiodbrtimer_sf10 (10 subframes), i.e. 10ms, i.e. 100 BSR values are collected per second.

After the buffer status report is acquired by the UE and reported to the gNodeB, determining the data condition to be scheduled of the UE according to the buffer status report by the gNodeB, and determining the UE with the data quantity to be scheduled being greater than a preset data quantity threshold value as an uplink large-traffic terminal according to the data condition to be scheduled.

Thus, in yet another embodiment of the present application, step 10 further comprises:

step 101: and determining the data quantity to be scheduled of the terminal according to the buffer status report of the terminal.

In one embodiment of the present application, the BSR reported by the UE is received through the gmodeb side, and an index value (index) is determined through a Buffer Size field, and according to the index value, table 6.1.3.1-1 (short BSR) or Table 6.1.3.1-2 (long BSR) in the 38.321 protocol is queried to obtain an uplink data amount required to be sent by the UE, where it is to be noted that the uplink data amount is "approximate" instead of an accurate Buffer Size, and includes the sum of remaining available effective data in RLC (Radio Link Control ) layer and PDCP (Packet Data Convergence Protocol, packet data convergence protocol) layer of all logical channels, specifically, see 38.322RLC protocol. The data amount is in bytes (byte) and RLC header and MAC header information are not counted, but may approximately reflect the amount of data that the UE needs to upload, and thus the queried value may be determined as the amount of data to be scheduled.

In still another embodiment of the present application, with a short BSR (5 bit) as a column, the correspondence between an index value (index) and an uplink data amount (BS value) may refer to fig. 2.

Step 102: and determining whether the terminal is the uplink large-traffic terminal according to the data volume to be scheduled.

In one embodiment of the present application, a sliding window acquisition mechanism is used for the received BSR index value by the gmodeb side, and once the BSR index value appears in the time timer threshold 1 and is higher than the BSR judgment threshold 2 on average, the UE is determined to be an uplink high traffic terminal, and in particular, the user is tagged with the uplink high traffic UE.

The determining process of the time timer threshold may be as follows: when the acquisition time window length is set to 5 seconds, when the acquisition frequency is set to tperiodbrtimer_sf10 (10 subframes), i.e. 10ms, according to the existing network, 100 BSR values can be acquired per second, i.e. 500 BSR values are acquired in one time window.

The determination procedure of the BSR judgment threshold may be as follows: different threshold values are selected for short code and long code, for example, short code index is preliminarily selected as 27, and long code index is preliminarily selected as 146.

In yet another embodiment of the present application, the sliding window monitors the BSR value, and once the foregoing condition is not satisfied, i.e. the acquisition time timer threshold 1, all BSR index values are on average below the BSR decision threshold 2, the UE tag of the user's uplink large traffic is deleted.

Step 20: and monitoring the uplink power margin and collecting a measurement report for the uplink large-traffic terminal.

In one embodiment of the present application, in order to ensure that the transmission requirement of the uplink high traffic terminal can be met, the uplink power headroom of the terminal needs to be determined to determine the remaining traffic transmission capability of the terminal, and in order to timely perform cell handover when the transmission is not sufficient, measurement reports of the uplink high traffic terminal need to be collected, so as to determine a target cell that can be switched.

Specifically, the configuration can be issued to the uplink high traffic terminal through the gNodeB side, so that the uplink high traffic terminal UE can acquire measurement reports. And meanwhile, monitoring uplink power headroom through the gNodeB side.

Thus, in yet another embodiment of the present application, step 20 further comprises:

step 201: and periodically determining the uplink power margin of the uplink large-traffic terminal at a first frequency.

In one embodiment of the application, the gmodeb side starts to collect the user uplink power residual value PHR for the UE of the uplink high traffic UE tag at the same time by performing a time sliding window.

The process of calculating the PUSCH transmitting power is as follows:

during the process of data service, the user transmits the PUSCH transmitting power P _PUSCH (i) The calculation formula of (2) is as follows:

P _PUSCH (i)＝min{P _CMAX，C ,10×log ₁₀ (2 _μ ×M _PUSCH (i))+P _{0_PUSCH} +α _{_PUSCH} ×PL+△ _TF (i)+f(i)}；

wherein i is PUSCH period, P _CMAX，C For maximum transmit power of UE, M _PUSCH (i) The unit is sub-band, mu is preset parameter, P _{0_PUSCH} Expected received power, alpha, when transmitting uplink data for PUSCH _{_PUSCH} The PL is the downlink path loss estimated by UE and is the cell parameter configured by the network side during PUSCH transmission, delta _TF (i) And f (i) is a closed loop power control adjustment value during PUSCH transmission.

gNodeB sends P through RRC signaling _{0_NOMINAL_PUSCH} 、P _{0_PUSCH} Alpha and alpha _{_PUSCH} And transmitting to the UE, and calculating the PUSCH transmitting power by the UE according to the calculation formula.

The UE calculates the power headroom PH of the PUSCH according to the following formula _PUSCH (i)：

PH _PUSCH (i)＝P _CMAX，C -(10×log ₁₀ (2 _μ ×M _PUSCH (i))+P _{0_PUSCH} +α _{_PUSCH} ×PL+△ _TF (i)+f(i))

In still another embodiment of the present application, the uplink power headroom reporting process at least includes the following steps: the UE periodically reports the power headroom PHR (Power Headroom Report) to the gNodeB via PHR MAC Control Element, and the PHR reporting period is determined by PHR period timer PHR-periodic timer (see 38.321 for details). The default value of the current network is SF100 (100 subframes), i.e. the period is 100ms, i.e. the first frequency. I.e. 10 PHR values per second.

Step 202: periodically collecting measurement reports of the uplink large-traffic terminals at a second frequency; wherein the second frequency is greater than the first frequency.

In one embodiment of the application, the gmodeb side issues periodic measurement configuration via RRC Reconfiguration message to UEs that have been tagged with uplink high traffic UEs. Wherein the measurement object of the periodic measurement selects the same frequency.

In yet another embodiment of the present application, the reporting period may be set to be slightly below the sliding window period by a timer threshold of 3, such as 5120ms. Therefore, when the uplink power margin is found to be insufficient in a certain time period, the target cell can be rapidly screened out.

The reporting object includes a strongest cell (PCI) Physical Cell Identity, physical cell identity and SSB RSRP value. Therefore, the terminal side reports the measurement result in a periodic mode according to the periodic measurement configuration, and the specific reported data can adopt the periodic measurement report of the current network. It should be noted that, the periodic measurement report of the current network is mainly 5120ms, and is used for network structure, neighbor cell optimization, and other purposes, but not for cell handover purposes.

Step 30: and when the uplink power margin is determined to be limited, determining a strongest neighbor cell according to the measurement report.

In one embodiment of the present application, step 30 further comprises:

step 301: and when the uplink power margin corresponding to a plurality of continuous acquisition periods is determined to be smaller than a margin threshold value, determining that the uplink power margin is limited.

In one embodiment of the application, the sliding window period sets a timer threshold of 3 to count PHR mean.

Wherein the timer threshold 3 may be set to 6 seconds, slightly higher than the periodic measurement report acquisition period, if the PHR-periodic timer acquisition frequency SF100 is configured, i.e. 60 PHR values are acquired.

If the PHR average value in the sliding window timer threshold 3 is lower than the PHR judgment threshold 4, the uplink large-traffic UE can be definitely in the uplink power limited state for a long time.

Considering that the PHR is defined as an 8-bit space in PHR MAC Control Element, the PHR judgment threshold 4 may be set to 0, corresponding to power_headroom_32. Namely, according to TPC (namely f (i)) issued by gNodeB after closed loop power control calculation, the obtained calculated PUSCH uplink power exceeds the maximum transmitting power of the UE side, and the UE side still cannot meet the expected transmitting power of the PUSCH even though transmitting according to the maximum power, thereby the UE with limited uplink power can be screened out according to PHR judgment threshold 4.

Step 302: and screening the strongest cell corresponding to the terminal according to the measurement report to obtain the strongest neighbor cell.

In one embodiment of the present application, after determining that the uplink high traffic UE is in the uplink power limited state for a long time through the gmodeb side, it indicates that a cell handover is required. And further, the gNodeB side screens out the strongest cell according to the periodical measurement report received.

In the screening, on one hand, whether the handover is feasible or not is considered, if the neighbor relation is met, whether the cell is a cell to which the handover is forbidden, such as a blacklist, or the like, and on the other hand, whether the user experience after the handover is the cell with the best user experience after the handover is considered, wherein the user experience after the handover can be correspondingly evaluated through the signal coverage quality of the cell.

Thus, in yet another embodiment of the present application, step 302 further comprises:

step 3021: and screening the strongest cell according to the neighbor cell relation and the cell identification to obtain an optional neighbor cell.

In one embodiment of the application, the neighbor relation includes an association relation between cell identifiers, and the strongest cell having configured the neighbor relation with the source cell is determined as the selectable neighbor cell.

Step 3022: and determining the strongest neighbor cell from the selectable neighbor cells according to the signal intensity.

In one embodiment of the application, whether the selectable neighbor cells are blacklisted or not is firstly screened, and then the selectable neighbor cell with the highest signal strength in all the selectable neighbor cells in the non-blacklisted list is determined as the strongest neighbor cell.

In yet another embodiment of the present application, step 3022 further comprises:

step 3024: and screening the selectable neighbor cells according to the cell blacklist to obtain screened neighbor cells.

In one embodiment of the application, the cells in the cell blacklist in the optional neighbor cells are deleted to obtain the screened neighbor cells.

Step 3025: and determining the strongest neighbor cell from the screened neighbor cells according to the signal intensity.

In one embodiment of the present application, the cell with the greatest signal strength in the screened neighbor cells may be determined as the strongest neighbor cell.

In yet another embodiment of the present application, step 3025 includes: and determining the strongest neighbor cell from the screened neighbor cells according to a preset signal strength threshold and the signal strength.

In one embodiment of the application, the signal strength is greater than the post-screening neighbor of the signal strength threshold. Wherein the signal strength threshold may be chosen to be-100 dBm.

Step 40: and carrying out cell switching on the uplink large-traffic terminal according to the strongest neighbor cell.

In one embodiment of the present application, a handover request is initiated to the strongest neighbor cell by the gmodeb (the cause of handover may be newly added with a field PHR limited), and the later procedure may be an existing handover procedure, which is not described again.

In yet another embodiment of the application, fig. 3 shows the data flow during a cell handover.

As shown in fig. 3, the UE side periodically reports BSR to the corresponding gndeb side (i.e., source GNB)

The source GNB collects sliding window of BSR index in the received BSR, when the source GNB determines that the UE is an uplink large-traffic user, a corresponding label is added to the UE, and periodic measurement configuration is issued to the UE.

Then, for the tagged users, the source GNB sliding window counts whether the PHR has an uplink power headroom. The source GNB determines whether the UE with the tag is in an uplink power limited state according to the uplink power allowance, and initiates switching according to the MR data obtained by the periodic measurement of the configuration and the signal strength determination. And determining whether the signal strength of the strongest neighbor cell reaches a signal strength threshold, is a neighbor cell and is positioned in a blacklist of the source cell.

In yet another embodiment of the present application, fig. 4 illustrates a logic decision flow for a cell switch.

As shown in fig. 4, first, the gmodeb side periodically receives a BSR in the PUSCH, and then the gmodeb side sliding window counts index values in the BSR, so as to determine whether the UE is an uplink large traffic UE, where the length of a time window counted by the sliding window may be a timer threshold 1, and a comparison threshold of the index values may be a BSR determination threshold 2.

And when the gNodeB side judges that the terminal is not the uplink large-traffic terminal, the switching is not performed temporarily, and the BSR index is continuously monitored to judge whether the terminal is the uplink large-traffic UE.

When the gNodeB side judges that the uplink large-traffic terminal is judged, the periodic measurement configuration is issued for measuring the strongest neighbor cell

And the sliding window statistics PHR judges whether a terminal has a large amount of insufficient uplink power margin, and specifically can judge the threshold 4 according to the timer threshold 3 and PHR.

When a large amount of insufficient uplink power margin exists, the switching is not performed temporarily, and the sliding window statistics PHR is continuously monitored to judge whether the terminal has the large amount of insufficient uplink power margin

And when a large number of uplink power headroom is insufficient, whether the strength of the strongest neighbor cell combined according to the periodic measurement report meets the standard (for example, the neighbor cell SSB RSRP threshold 5) or not, whether the neighbor cell is a neighbor cell or not, and initiating switching after a blacklist is determined, if no cell meeting the above conditions exists, continuing waiting until the cell meeting the above conditions appears, and if the cell meeting the above conditions exists, initiating switching, wherein a switching reason cause new field PHR limited is used for identifying the switching reason because the uplink power headroom is limited.

The cell switching method provided by the embodiment of the application determines the uplink large-traffic terminal according to the buffer status report; monitoring uplink power headroom and collecting measurement reports for the uplink large-traffic terminal; when the uplink power margin limit is monitored, determining the strongest neighbor cell randomly according to the measurement report; and finally, carrying out cell switching on the uplink high-traffic terminal according to the strongest neighbor cell, thereby distinguishing the problem that the user experience of the uplink high-power user is poor because the cell switching method aiming at the scene of the uplink high-traffic terminal is not available in the prior art.

Fig. 5 shows a schematic structural diagram of a cell switching device according to an embodiment of the present application. As shown in fig. 5, the apparatus 50 includes: a first determining module 501, an acquisition module 502, a second determining module 503, and a switching module 504.

The first determining module 501 is configured to determine an uplink large traffic terminal according to the buffer status report;

the acquisition module 502 is configured to monitor an uplink power headroom for the uplink high traffic terminal and acquire a measurement report;

a second determining module 503, configured to determine, when it is determined that the uplink power headroom is limited, a strongest neighbor cell according to the measurement report;

and a switching module 504, configured to perform cell switching on the uplink large-traffic terminal according to the strongest neighbor cell.

The operation process of the cell switching device provided by the embodiment of the present application is substantially the same as that of the foregoing method embodiment, and will not be repeated.

The cell switching device provided by the embodiment of the application determines the uplink large-traffic terminal according to the buffer status report; monitoring uplink power headroom and collecting measurement reports for the uplink large-traffic terminal; when the uplink power margin limit is monitored, determining the strongest neighbor cell randomly according to the measurement report; and finally, carrying out cell switching on the uplink high-traffic terminal according to the strongest neighbor cell, thereby distinguishing the problem that the user experience of the uplink high-power user is poor because the cell switching method aiming at the scene of the uplink high-traffic terminal is not available in the prior art.

Fig. 6 is a schematic structural diagram of a cell switching device according to an embodiment of the present application, and the specific embodiment of the present application is not limited to the specific implementation of the cell switching device.

As shown in fig. 6, the cell switching apparatus may include: a processor 602, a communication interface (Communications Interface), a memory 606, and a communication bus 608.

Wherein: processor 602, communication interface 604, and memory 606 perform communication with each other via communication bus 608. Communication interface 604 is used to communicate with network elements of other devices, such as clients or other servers. The processor 602 is configured to execute the program 610, and may specifically perform the relevant steps in the embodiment of the cell handover method described above.

In particular, program 610 may include program code comprising computer-executable instructions.

The processor 602 may be a central processing unit CPU or a specific integrated circuit ASIC (Application Specific Integrated Circuit) or one or more integrated circuits configured to implement embodiments of the present application. The one or more processors comprised by the cell switching device may be the same type of processor, such as one or more CPUs; but may also be different types of processors such as one or more CPUs and one or more ASICs.

A memory 606 for storing a program 610. The memory 606 may comprise high-speed RAM memory or may further comprise non-volatile memory (non-volatile memory), such as at least one disk memory.

The program 610 may be specifically invoked by the processor 602 to cause the cell switching device to:

The operation process of the cell switching device provided by the embodiment of the present application is substantially the same as that of the foregoing method embodiment, and will not be described again.

The cell switching equipment provided by the embodiment of the application determines the uplink large-traffic terminal according to the buffer status report; monitoring uplink power headroom and collecting measurement reports for the uplink large-traffic terminal; when the uplink power margin limit is monitored, determining the strongest neighbor cell randomly according to the measurement report; and finally, carrying out cell switching on the uplink high-traffic terminal according to the strongest neighbor cell, thereby distinguishing the problem that the user experience of the uplink high-power user is poor because the cell switching method aiming at the scene of the uplink high-traffic terminal is not available in the prior art.

An embodiment of the present application provides a computer readable storage medium storing at least one executable instruction that, when executed on a cell switching device, causes the cell switching device to perform a cell switching method in any of the foregoing method embodiments.

The executable instructions may be specifically configured to cause a cell switching device to:

The operation process of the executable instructions stored in the computer readable storage medium provided in the embodiment of the present application is substantially the same as that of the foregoing method embodiment, and will not be repeated.

The computer readable storage medium provided by the embodiment of the application determines the uplink large-traffic terminal according to the buffer status report; monitoring uplink power headroom and collecting measurement reports for the uplink large-traffic terminal; when the uplink power margin limit is monitored, determining the strongest neighbor cell randomly according to the measurement report; and finally, carrying out cell switching on the uplink high-traffic terminal according to the strongest neighbor cell, thereby distinguishing the problem that the user experience of the uplink high-power user is poor because the cell switching method aiming at the scene of the uplink high-traffic terminal is not available in the prior art.

The embodiment of the application provides a cell switching device which is used for executing the cell switching method.

An embodiment of the present application provides a computer program that can be invoked by a processor to cause a cell switching device to perform a cell switching method according to any of the method embodiments described above.

An embodiment of the present application provides a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when run on a computer, cause the computer to perform the cell handover method of any of the method embodiments described above.

The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general-purpose systems may also be used with the teachings herein. The required structure for a construction of such a system is apparent from the description above. In addition, embodiments of the present application are not directed to any particular programming language. It will be appreciated that the teachings of the present application described herein may be implemented in a variety of programming languages, and the above description of specific languages is provided for disclosure of enablement and best mode of the present application.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the above description of exemplary embodiments of the application, various features of the embodiments of the application are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed application requires more features than are expressly recited in each claim.

Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component, and they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specifically stated.

Claims

1. A method of cell handover, the method comprising:

2. The method according to claim 1, wherein the determining the upstream high traffic terminal according to the buffer status report comprises:

3. The method of claim 1, wherein the monitoring of the uplink power headroom and the acquisition of the measurement report for the uplink high traffic terminal comprise:

4. The method of claim 3, wherein the determining the strongest neighbor from the measurement report when determining that the uplink power headroom is limited comprises:

5. The method of claim 4, wherein the measurement report includes a cell identity and a signal strength of the strongest cell; the step of screening the strongest cell corresponding to the terminal according to the measurement report to obtain the strongest neighbor cell comprises the following steps:

6. The method of claim 5, wherein said determining the strongest neighbor from among the alternative neighbors based on the signal strength, further comprises:

7. The method of claim 6, wherein said determining the strongest neighbor from the screened neighbors based on the signal strength comprises:

8. A cell switching apparatus, the apparatus comprising:

9. A cell switching apparatus, comprising: the device comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete communication with each other through the communication bus;

the memory is configured to store at least one executable instruction that causes the processor to perform the operations of the cell handover method according to any one of claims 1-7.

10. A computer readable storage medium, characterized in that at least one executable instruction is stored in the storage medium, which executable instruction, when run on a cell switching device, causes the cell switching device to perform the operations of the cell switching method according to any of claims 1-7.