CN110831081B - Switching information reporting method, switching robustness optimizing method, switching information reporting device, switching robustness optimizing device, storage medium, user equipment and base station - Google Patents
Switching information reporting method, switching robustness optimizing method, switching information reporting device, switching robustness optimizing device, storage medium, user equipment and base station Download PDFInfo
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- CN110831081B CN110831081B CN201810908786.5A CN201810908786A CN110831081B CN 110831081 B CN110831081 B CN 110831081B CN 201810908786 A CN201810908786 A CN 201810908786A CN 110831081 B CN110831081 B CN 110831081B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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Abstract
A method and device for reporting switching information and optimizing switching robustness, a storage medium, user equipment and a base station are provided, wherein the method for reporting switching information comprises the following steps: acquiring switching information for executing cell switching last time, wherein the switching information comprises switching types, and the switching types comprise normal switching and conditional switching; and reporting the switching information to a base station, so that the base station can optimize the robustness of the switching operation corresponding to the switching type. The technical scheme of the invention can realize the optimization of the switching related parameters in a new wireless system and improve the network performance.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for reporting handover information and optimizing handover robustness, a storage medium, a user equipment, and a base station.
Background
Self Organizing Network (SON) is a technology that automates Network configuration and optimization. The technology is characterized by self-configuration and self-optimization, and is applied to a Long-Term Evolution (LTE) system, so that a base station (eNB) can automatically configure network parameters according to certain measurement and automatically optimize according to network change, thereby maintaining the optimal network performance and saving a large amount of manpower and material resources.
The LTE Network consists of an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and an Evolved Packet switching center (EPC), and the Network is flattened. The E-UTRAN includes a set of Evolved node bs (enbs) connected to the EPC through an S1 interface, and the enbs can be connected to each other through an X2. S1, X2 are logical interfaces. One EPC may manage one or more enbs, one eNB may also be controlled by multiple EPCs, and one eNB may manage one or more cells.
For the self-optimization of the handover parameters of the LTE system, parameters related to cell reselection and handover need to be optimized according to the operation status of the network, measurements related to handover, and a certain algorithm, so as to improve the performance of the network. Here, handover refers to handover within an LTE System and handover between systems, and handover between systems refers to handover of a Universal Mobile telecommunications System Radio Access Network (UTRAN, which is a type of 3G communication System) or a Global System for Mobile communications (GSM, also referred to as a 2G communication System) or Code Division Multiple Access (CDMA, which is a type of 3G communication System) System. The process of terminal handover in the network is as follows: and the network side makes a switching decision based on a certain switching algorithm according to the signal quality of the local cell and the adjacent cell reported by the terminal, and then informs the terminal of executing a specific switching process according to the switching decision. Improper HandOver parameter settings may result in ping-pong HandOver, HandOver Failure (HOF), or Radio Link Failure (RLF), which are all undesirable handovers and negatively impact the user experience. When a User Equipment (UE) generates RLF, Radio Resource Control (RRC) re-establishment is performed.
The 5G network consists of a 5G core network and a next generation radio access network. A 5G core network (5 GC) is composed of an Access and Mobility Management Function (AMF) element and a User Plane Function (UPF) element. The next generation Radio Access Network (NG-RAN) includes a gbb or NG-eNB. In a 5G network, a network side may send handover command information to a UE, and the UE immediately performs handover after receiving the handover command information, and accesses to a target cell. The network side can also send conditional switch command information to the UE, the UE receives the conditional switch command information sent by the network side, and the terminal executes a switch action when the condition for triggering the switch is satisfied, wherein the conditional switch command information refers to the content of the conditional switch triggering condition information configured by the network side.
However, conditional handover is introduced in 5G, and it is impossible to identify or determine which handover operation is optimized by using a handover parameter self-optimization scheme of the existing LTE system.
Disclosure of Invention
The technical problem solved by the invention is how to realize the optimization of the switching operation and improve the network performance in a new wireless system.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a method for reporting handover information, where the method for reporting handover information includes: acquiring switching information for executing cell switching last time, wherein the switching information comprises switching types, and the switching types comprise normal switching and conditional switching; and reporting the switching information to a base station, so that the base station can optimize the robustness of the switching operation corresponding to the switching type.
Optionally, the obtaining of the handover information of the last cell handover execution includes: determining the switching type according to whether the normal switching is executed or not, wherein the switching type is normal switching or abnormal switching; or determining the switching type according to whether the conditional switching occurs, wherein the switching type is conditional switching or unconditional switching.
Optionally, the step of obtaining the handover information of the last cell handover includes: determining a first time interval between a time when a cell handover is performed and a time when a radio link failure occurs, and adding the first time interval to the handover information.
Optionally, the reporting the handover information to the base station includes: and when the first time interval is smaller than a preset time threshold, reporting the switching information to a base station.
Optionally, the obtaining the handover information of the last cell handover execution further includes: and generating indication information of whether the switching command information aiming at the conditional switching is received in the cell with the radio link failure, and adding the indication information into the switching information.
Optionally, the step of obtaining the handover information of the last cell handover includes: and if the switching type is the conditional switching, determining a second time interval between the time of receiving the switching command information aiming at the conditional switching and the time of generating the radio link failure, and adding the second time interval into the switching information.
Optionally, the reporting the handover information to the base station includes: and reporting historical information to the base station, wherein the historical information comprises the switching information.
Optionally, the history information further includes one or more of the following: the signal quality of the source cell and the signal quality of the target cell when cell switching is executed or triggered; signal quality of one or more beams of the target cell; the signal quality of the neighbor cell when performing a cell handover or when triggering the cell handover.
Optionally, the obtaining of the handover information of the last cell handover execution includes: and recording the switching type of the last cell switching.
Optionally, the reporting the handover information to the base station includes: carrying the switching information in an RRC connection reestablishment request message or an RRC connection reestablishment completion message and reporting the switching information to the base station; or, the switching information is recorded in a radio link failure report and reported to the base station.
Optionally, the reporting the handover information to the base station includes: and reporting the switching information to the base station according to reporting indication information received from the base station, wherein the reporting indication information is carried in an RRC connection reestablishment message or a terminal information request message.
In order to solve the above technical problem, an embodiment of the present invention further discloses a switching robustness optimization method, where the switching robustness optimization method includes: receiving switching information reported by user equipment, wherein the switching information comprises a switching type, and the switching type comprises normal switching and conditional switching; and optimizing the robustness of the switching operation corresponding to the switching type.
Optionally, the optimizing the robustness of the switching operation corresponding to the switching type includes: and judging a switching scene at least according to the switching information and optimizing the robustness of the switching operation corresponding to the switching type.
In order to solve the above technical problem, an embodiment of the present invention further discloses a handover information reporting apparatus, where the handover information reporting apparatus includes: a switching information determining module, adapted to obtain switching information for performing cell switching last time, where the switching information includes a switching type, and the switching type includes normal switching and conditional switching; and the switching information reporting module is suitable for reporting the switching information to a base station, so that the base station can optimize the robustness of the switching operation corresponding to the switching type.
Optionally, the handover information determining module includes: a first handover type determining unit adapted to determine the handover type according to whether to perform the normal handover, the handover type being a normal handover or an abnormal handover; and the second switching type determining unit is suitable for determining the switching type according to whether the conditional switching occurs or not, wherein the switching type is conditional switching or unconditional switching.
Optionally, the radio link failure occurs after the cell handover is performed, further including: a first time interval determination module adapted to determine a first time interval between a time of performing a cell handover and a time of occurrence of a radio link failure, and to add the first time interval to the handover information.
Optionally, the handover information reporting module reports the handover information to the base station when the first time interval is smaller than a preset time threshold.
Optionally, the device for reporting handover information further includes: and the indication information determining module is suitable for determining whether handover command information aiming at the conditional handover is received in a cell with a radio link failure or not when the handover type is the conditional handover so as to obtain indication information, and adding the indication information into the handover information.
Optionally, the radio link failure occurs after the cell handover procedure is performed, and the method further includes: a second time interval determining module, adapted to determine a second time interval between a time when handover command information for the conditional handover is received and a time when a radio link failure occurs, and add the second time interval to the handover information, when the handover type is the conditional handover.
Optionally, the handover information reporting module includes: and the historical information reporting unit is suitable for reporting the historical information to the base station, wherein the historical information comprises the switching information.
Optionally, the history information further includes one or more of the following: the signal quality of the source cell and the signal quality of the target cell when cell switching is executed or triggered; signal quality of one or more beams of the target cell; the signal quality of the neighbor cell when performing a cell handover or when triggering the cell handover.
Optionally, the handover information determining module records a handover type of a last cell handover.
Optionally, the handover information reporting module carries the handover information in an RRC connection reestablishment request message or an RRC connection reestablishment completion message and reports the handover information to the base station; or, the switching information reporting module reports the switching information recorded in a radio link failure report to the base station.
Optionally, the handover information reporting module includes: and the reporting unit is suitable for reporting the switching information to the base station according to reporting indication information received from the base station, wherein the reporting indication information is carried in an RRC connection reestablishment message or a terminal information request message.
The embodiment of the invention also discloses a switching robustness optimization device, which comprises: the switching information receiving module is suitable for receiving switching information reported by user equipment, wherein the switching information comprises a switching type, and the switching type comprises normal switching and conditional switching; and the optimization module is suitable for optimizing the robustness of the switching operation corresponding to the switching type.
Optionally, the optimization module at least judges a switching scenario according to the switching information and optimizes robustness of switching operation corresponding to the switching type.
The embodiment of the invention also discloses a storage medium, wherein a computer instruction is stored on the storage medium, and the step of the switching information reporting method or the step of the switching robustness optimization method is executed when the computer instruction runs.
The embodiment of the invention also discloses user equipment which comprises a memory and a processor, wherein the memory is stored with a computer instruction which can be operated on the processor, and the processor executes the step of the switching information reporting method when operating the computer instruction.
The embodiment of the invention also discloses a base station, which comprises a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor, and the processor executes the steps of the switching robustness optimization method when running the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the technical scheme of the invention obtains the switching information of the last executed cell switching, wherein the switching information comprises switching types, and the switching types comprise normal switching and conditional switching; and reporting the switching information to a base station, so that the base station can optimize the robustness of the switching operation corresponding to the switching type. In the technical scheme of the invention, the user equipment determines the switching type, the switching type is contained in the switching information, and the base station can acquire the switching type of the user equipment by reporting the switching information to the base station. Because different switching types correspond to different switching parameters and/or switching algorithms, the base station can judge and select the switching parameters and/or switching algorithms to optimize, and the network performance is improved.
Furthermore, by setting the switching type to be normal switching or abnormal switching, or setting the switching type to be conditional switching or unconditional switching, the bit occupied by the switching type can be reduced, so that the data volume of the switching information reported by the user equipment is reduced, and the efficiency of data transmission between the user equipment and the base station is realized.
Further, a first time interval between a time of performing a cell handover and a time at which a radio link failure occurs is determined, the handover information comprising the first time interval. In the technical scheme of the invention, the first time interval can be used for judging whether the radio link failure is associated with the cell switching or not, so that the first time interval can be used for the base station to determine whether the switching parameters and/or the switching algorithm are optimized or not, unnecessary optimization operation is avoided, and the expense of the base station is saved.
Further, history information is reported to the base station, wherein the history information includes the handover information and is recorded when the base station is in the connected state and moves. In the technical scheme of the invention, the user equipment can report the switching information together when reporting the historical information by recording the cell information and the relevant information of cell switching in the moving process; the method and the device realize the report of the switching information under the condition that the cell switching is completed successfully, further realize the optimization of the corresponding switching parameters and/or switching algorithms, and further improve the network performance.
Drawings
Fig. 1 is a flowchart of a handover information reporting method according to an embodiment of the present invention;
FIGS. 2 to 4 are schematic diagrams of three switching scenarios according to the embodiment of the present invention;
fig. 5 is a flowchart of a specific implementation of a handover information reporting method according to an embodiment of the present invention;
FIG. 6 is a flow chart of a handover robustness optimization method according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a handover information reporting apparatus according to an embodiment of the present invention;
fig. 8 is a block diagram of a specific embodiment of the handover information reporting module 702 shown in fig. 7;
fig. 9 is a schematic structural diagram of a handover robustness optimization apparatus according to an embodiment of the present invention.
Detailed Description
As described in the background art, conditional handover is introduced in 5G, and it is impossible to identify or determine which handover operation is optimized by using a handover parameter self-optimization scheme of the existing LTE system.
In the technical scheme of the invention, the user equipment determines the switching type, the switching type is contained in the switching information, and the switching information is reported to the base station, so that the base station can know the switching type of the user equipment. Because different switching types correspond to different switching parameters and/or switching algorithms, the base station can judge and select the switching parameters for optimization, and the network performance is improved.
The technical scheme of the invention can be suitable for a 5G communication system, a 4G communication system and other various communication systems of subsequent evolution.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a flowchart of a handover information reporting method according to an embodiment of the present invention.
The handover information reporting method shown in fig. 1 may be executed on a User Equipment (UE) side. The method may comprise the steps of:
step S101: acquiring switching information for executing cell switching last time, wherein the switching information comprises switching types, and the switching types comprise normal switching and conditional switching;
step S102: and reporting the switching information to a base station, so that the base station can optimize the robustness of the switching operation corresponding to the switching type.
The cell in this embodiment refers to a cell in a communication system, and may be, for example, a cell in 2G, 3G, 4G, or 5G.
In a specific embodiment, the UE may perform specific cell handover according to the indication of the base station. For example, from Cell1 to Cell 2. The following may occur in performing a cell handover: the cell switching is successfully executed; the UE has ping-pong handover, handover Failure (HOF) or Radio Link Failure (RLF) in the process of performing cell handover; the UE experiences a radio link failure after performing the cell handover.
In a specific implementation, the last cell handover performed may refer to the last cell handover before a radio link failure occurs. In the handover failure scenario, the last cell handover execution refers to the failed handover.
In this embodiment, the base station may optimize the robustness of the handover operation corresponding to the handover type according to the condition that the UE performs the cell handover. Specifically, optimizing the robustness of the handover operation may refer to optimizing a handover parameter corresponding to the handover type, or may also be optimizing a handover algorithm for executing the handover operation.
It is understood that the handover parameter may be a measurement event threshold, a bias parameter in a measurement event, or any other implementable parameter type in the prior art; the handover algorithm may be any implementable algorithm in the prior art, and the embodiment of the present invention is not limited thereto.
In the case that the cell handover has two types, normal handover and conditional handover, the UE needs to determine the handover type and report the handover type to the base station with the handover information included in the handover information. So that the base station can know the handover type of the user equipment. Because different switching types correspond to different switching parameters and/or switching algorithms, the base station can judge and select the switching parameters and/or switching algorithms to optimize, and the network performance is improved.
It should be noted that, the algorithm used by the base station to optimize the handover parameters and/or the handover algorithm may refer to the prior art, and is not described herein again.
The handover information may also include an identification of the source cell and an identification of the target cell where the cell handover occurred. When the user equipment is subjected to cell switching, the cell switching can be performed in different switching scenes. Specific switching scenarios can refer to fig. 2 to 4.
As shown in fig. 2, a Radio link failure occurs in the Cell b, or a failure occurs in the handover process from the Cell b to the Cell a, and then the UE attempts Radio Resource Control connection re-establishment (Radio Resource Control connection re-establishment) in the Cell a. In this case, the UE is handed over too late from Cell b to Cell a.
As shown in fig. 3, a radio link failure occurs in the Cell b shortly after the UE switches from the Cell a to the Cell b, or the UE fails in the switching process from the Cell a to the Cell b, and then the UE selects the Cell a to perform RRC reestablishment, that is, returns to the Cell before the switching to perform RRC connection reestablishment. In this case, it indicates that the handover of the UE from the Cell a to the Cell b is early.
As shown in fig. 4, a radio link failure occurs shortly after the UE switches from Cell c to Cell b, or fails in the switching process from Cell c to Cell b, and then the UE performs RRC re-establishment in Cell a. In this case, it indicates that the Cell b selected by the UE is the wrong target Cell, and the correct target Cell is the Cell a, that is, the UE should directly perform handover from the Cell c to the Cell a.
In one embodiment of the present invention, step S101 shown in fig. 1 may include the following steps: determining the switching type according to whether the normal switching is executed or not, wherein the switching type is normal switching or abnormal switching; or determining the switching type according to whether the conditional switching occurs, wherein the switching type is conditional switching or unconditional switching.
That is, the handover type may be indicated by whether it is a conditional handover, i.e. an unconditional handover indicates a normal handover. Or the handover type may be indicated by whether it is a normal handover, i.e. an abnormal handover, which is denoted as a conditional handover.
The embodiment of the invention can reduce the bit occupied by the switching type, thereby reducing the data volume of the switching information reported by the user equipment and realizing the efficiency of data transmission between the user equipment and the base station.
In one embodiment of the present invention, a radio link failure occurs after a cell handover is performed. For example, the UE is handed over from the Cell1 to the Cell2, a radio link failure occurs in the Cell2, and the UE performs RRC connection re-establishment. Wherein, the UE selects RRC connection re-establishment in Cell 3. Cell3 may be the same as or different from Cell1 or Cell 2.
Referring to fig. 5, after step S101 shown in fig. 1, the UE may further perform step S501: determining a first time interval between a time when a cell handover is performed and a time when a radio link failure occurs, and adding the first time interval to the handover information.
In the embodiment of the invention, the first time interval can be used for judging whether the radio link failure is associated with the cell switching or not, so that the first time interval can be used for the base station to determine whether the switching parameters and/or the switching algorithm are optimized or not, unnecessary optimization operation is avoided, and the expense of the base station is saved.
The UE may also perform step S502: and when the first time interval is smaller than a preset time threshold, reporting the switching information to a base station.
That is, the first time interval being less than the preset time threshold indicates that the radio link failure is associated with cell handover, and handover parameters and/or handover algorithms need to be optimized to ensure data transmission between the UE and the base station. Thus, in this case, the UE reports handover information to the base station.
Correspondingly, when the first time interval is greater than or equal to the preset time threshold, it indicates that the radio link failure is not associated with the cell handover, and the handover parameters and/or handover algorithm do not need to be optimized, so that the UE may not report the last handover information in the handover information, but only report the radio link failure and RRC reestablishment information.
In a specific embodiment, after step S101 shown in fig. 1, the UE may further perform the following steps: and generating indication information of whether the switching command information aiming at the conditional switching is received in the cell with the radio link failure, and adding the indication information into the switching information.
In this embodiment, the indication information may indicate whether the terminal receives handover command information for conditional handover, and whether association exists between radio link failure and conditional handover may be determined through the indication information.
That is, if the UE receives the handover command information of the conditional handover in the cell where the radio link failure occurs, it indicates that the radio link failure is associated with the conditional handover, and the base station needs to optimize the handover parameters and/or handover algorithm of the conditional handover.
In another embodiment, the cell handover procedure is failed or followed by a radio link failure. After step S101 shown in fig. 1, the UE may further perform the following steps: and if the switching type is the conditional switching, determining a second time interval between the time of receiving the switching command information aiming at the conditional switching and the time of generating the radio link failure, and adding the second time interval into the switching information.
In this embodiment, it may be determined whether the sending of the handover command information for the conditional handover is too early or too late through the second time interval, for example, the second time interval being greater than a preset value indicates that the sending of the handover command information is too late, which results in a radio link failure. That is, the base station may determine the specific parameter to be optimized according to the second time interval by reporting the second time interval to the base station, so as to optimize the network.
In another embodiment of the present invention, step S102 shown in fig. 1 may include the following steps: and reporting historical information to the base station, wherein the historical information comprises the switching information and is recorded when the base station is in the connected state and moves.
In a specific implementation, when the UE is in a connected state and moves, the cell through which the UE passes may be recorded. For example, the UE is handed over from Cell1 to Cell2, then from Cell2 to Cell3, and then from Cell3 to Cell 4; the UE may record the information related to the cell handover in the history information.
The history information comprises the switching type of the cell switching, the identification of the source cell of the cell switching and the identification of the target cell.
The history information may also include the time the UE stays in the connected state in each cell.
Specifically, when the UE reports the history Information, the history Information may be carried in an RRC message, where the RRC message may include, but is not limited to, an RRC connection reestablishment Complete message, an RRC Reconfiguration Complete (Reconfiguration Complete) message, an RRC recovery Complete (Resume Complete) message, a terminal Information Response (UE Information Response), and the like,
In the embodiment of the invention, the user equipment can report the switching information when reporting the history information by recording the cell information and the relevant information of cell switching in the moving process; the method and the device realize the report of the switching information under the condition that the cell switching is completed successfully, further realize the optimization of the corresponding switching parameters and/or switching algorithms, and further improve the network performance.
Further, the history information may further include a signal quality of the source cell and a signal quality of the target cell when the UE performs cell handover or triggers cell handover.
Further, the history information may further include signal quality of one or more beams of the target cell measured by the UE.
Further, the history information may further include signal quality of a neighboring cell when the UE performs cell handover or triggers the cell handover. The signal quality of the neighboring cell may be measured by the terminal, for example, measured according to a measurement configuration configured on the network side.
Specifically, the Signal Quality of the cell may be one or more of Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), and Signal to Interference plus Noise Ratio (SINR).
In a preferred embodiment of the present invention, as described above, when the UE performs cell handover, handover failure may occur, and when the handover failure occurs, the UE may perform RRC connection re-establishment.
The UE records the handover type of the last cell handover.
For example, the UE performs handover from Cell1 to Cell2, and when a handover failure occurs, the UE performs RRC connection re-establishment, wherein the UE selects RRC connection re-establishment in Cell 3.
Or, the UE switches from the Cell1 to the Cell2, and when a radio link failure occurs in the Cell2, the UE performs RRC connection re-establishment, wherein the UE selects to perform RRC connection re-establishment in the Cell 3. If the RRC connection reestablishment fails or the Cell for RRC connection reestablishment cannot be selected, the UE transitions to an idle state (idle state), and the UE successfully establishes the RRC connection in the Cell 4.
Further, in a scenario where a radio link failure or a handover failure occurs, the UE may carry the handover information in an RRC connection reestablishment request message or an RRC connection reestablishment complete message and report the handover information to the base station.
Specifically, the RRC connection reestablishment request message or the RRC connection reestablishment complete message may further include a UE identity (UE-identity). The UE identity may be an identity allocated to the UE by the cell in which the radio link failure occurs. The UE identity may specifically include a Cell Radio Network Temporary identity (Cell Radio Network Temporary identity), a physical Cell identity, a Message Integrity Authentication Code (Message Integrity Code for Integrity) Short MAC-I, and the like.
In a scenario where a handover failure or a radio link failure occurs, the UE may record the handover information in a radio link failure report and report the handover information to the base station.
Specifically, the radio link failure report may be reported to the base station through a terminal Information Response (UE Information Response).
Specifically, the radio link failure report may further include a cell identifier of a cell in which the terminal initiates RRC connection re-establishment. The radio link failure report may also include a cell identifier of a cell in which the terminal has a radio link failure.
It should be noted that the cell identifier may be a cell global identifier, or a physical layer cell identifier and frequency information for uniquely identifying a cell.
In another preferred embodiment of the present invention, the base station may send reporting indication information to the UE in advance to indicate whether the UE sends the handover information.
Step S102 shown in fig. 1 may include the following steps: reporting the switching Information to the base station according to reporting indication Information received from the base station, wherein the reporting indication Information can be carried in RRC messages such as RRC connection Reestablishment messages (messages) or terminal Information Request messages (UE Information Request messages).
That is, when receiving the reporting indication information, the UE reports the handover information to the base station; otherwise, the UE will not report the switching information.
Further, the reporting indication information may also indicate the type of information to be reported in the handover information. For example, the reporting indication information indicates a reporting switching type; the reporting indication information indicates the reporting switching type and one or more of the first time interval, the second time interval and the indication information.
Referring to fig. 6, the handover robustness optimization method shown in fig. 6 may be used on the base station side, and the handover robustness optimization method may include the following steps,
step S601: receiving switching information reported by user equipment, wherein the switching information comprises a switching type, and the switching type comprises normal switching and conditional switching;
step S602: and optimizing the robustness of the switching operation corresponding to the switching type.
In this embodiment, the base station may determine the handover parameter and/or handover algorithm that needs to be optimized by receiving the handover type, for example, the handover parameter may be a handover parameter corresponding to normal handover or a handover parameter corresponding to conditional handover, so as to optimize the handover parameter, optimize the handover algorithm, and the like, avoid a radio link failure or a handover failure caused by cell handover, and improve network performance.
Further, the switching information, step S602, may include the following steps: and judging that the switching scene optimizes the robustness of the switching operation corresponding to the switching type at least according to the switching information.
Specifically, the handover scenario may include a ping-pong handover, a too early handover, a too late handover, or a selection of a wrong target cell. The base station can optimize specific optimization parameters and/or a switching algorithm according to the judged switching scene, and network performance is further improved.
In a specific embodiment of the present invention, the UE may report history information to the base station, where the history information includes handover type and cell handover related information. The base station can judge whether the ping-pong handover or the unnecessary handover occurs to the UE according to the received history information, so that the UE can be optimized for specific handover parameters and/or handover algorithms.
For example, the history information indicates that the UE is continuously switched between two cells, and the base station may determine that the UE is ping-pong switched; the history information indicates that after the UE is switched from the Cell1 to the Cell2, the UE is immediately switched to the Cell3, and then the base station may determine that the UE is unnecessarily switched.
Referring to fig. 7, the handover information reporting apparatus 70 may include a handover information determining module 701 and a handover information reporting module 702.
The handover information determining module 701 is adapted to obtain handover information of a last cell handover, where the handover information includes a handover type, and the handover type includes a normal handover and a conditional handover;
the handover information reporting module 702 is adapted to report the handover information to a base station, so that the base station can optimize the robustness of the handover operation corresponding to the handover type.
In the embodiment of the invention, the user equipment determines the switching type, includes the switching information and reports the switching information to the base station, so that the base station can acquire the switching type of the user equipment. Because different switching types correspond to different switching parameters and/or switching algorithms, the base station can judge and select the switching parameters and/or switching algorithms to optimize, and the network performance is improved.
In a specific embodiment, the handover information determining module 701 may include: a first handover type determining unit adapted to determine the handover type according to whether to perform the normal handover, the handover type being a normal handover or an abnormal handover; and the second switching type determining unit is suitable for determining the switching type according to whether the conditional switching occurs or not, wherein the switching type is conditional switching or unconditional switching.
The handover information reporting apparatus 70 shown in fig. 7 may further include a first time interval determining module, adapted to determine a first time interval between the time of performing the cell handover and the time of the radio link failure, and add the first time interval to the handover information.
Further, the handover information reporting module reports the handover information to the base station when the first time interval is smaller than a preset time threshold.
The handover information reporting apparatus 70 shown in fig. 7 may further include an indication information determining module, adapted to determine whether handover command information for the conditional handover is received in a cell where a radio link failure occurs, so as to obtain indication information, and add the indication information to the handover information when the handover type is the conditional handover.
The handover information reporting apparatus 70 shown in fig. 7 may further include a second time interval determining module, adapted to determine, when the handover type is the conditional handover, a second time interval between a time when the handover command information for the conditional handover is received and a time when a radio link failure occurs, and add the second time interval to the handover information.
In a specific embodiment, referring to fig. 8, the handover information reporting module 702 may include a history information reporting unit 7021, adapted to report history information to the base station, where the history information includes the handover information.
In a specific embodiment, with reference to fig. 8, the handover information reporting module 702 may include: a reporting unit 7022, adapted to report the handover Information to the base station according to reporting indication Information received from the base station, where the reporting indication Information is carried in an RRC connection reestablishment message or a terminal Information Request message (UE Information Request message).
For more details of the working principle and the working mode of the handover information reporting device 70, reference may be made to the relevant descriptions in fig. 1 to fig. 5, which are not described herein again.
Referring to fig. 9, the handover robustness optimization apparatus 90 may include a handover information receiving module 901 and an optimization module 902. The handover robustness optimization device 90 may be used on the base station side.
The handover information receiving module 901 is adapted to receive handover information reported by a user equipment, where the handover information includes a handover type, and the handover type includes normal handover and conditional handover; the optimizing module 902 is adapted to optimize the robustness of the handover operation corresponding to the handover type.
In a preferred embodiment of the present invention, the optimizing module 902 optimizes the robustness of the switching operation corresponding to the switching type at least according to the determined switching scenario.
For more details of the operation principle and the operation mode of the switching robustness optimization apparatus 90, reference may be made to the relevant descriptions in fig. 1 to fig. 6, and details are not repeated here.
The embodiment of the invention also discloses a storage medium, wherein computer instructions are stored on the storage medium, and when the computer instructions are operated, the steps of the method shown in the figure 1, the figure 5 or the figure 6 can be executed. The storage medium may include ROM, RAM, magnetic or optical disks, etc. The storage medium may further include a non-volatile memory (non-volatile) or a non-transitory memory (non-transient), and the like.
The embodiment of the invention also discloses user equipment which can comprise a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor. The processor, when executing the computer instructions, may perform the steps of the handover information reporting method shown in fig. 1 or fig. 5. The user equipment includes but is not limited to a mobile phone, a computer, a tablet computer and other terminal equipment.
The embodiment of the invention also discloses a base station which can comprise a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor. The processor, when executing the computer instructions, may perform the steps of the method shown in fig. 6.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (29)
1. A method for reporting handover information is characterized by comprising the following steps:
acquiring switching information for executing cell switching last time, wherein the switching information comprises switching types, and the switching types comprise normal switching and conditional switching;
and reporting the switching information to a base station, so that the base station can optimize the robustness of the switching operation corresponding to the switching type.
2. The method of claim 1, wherein the obtaining the handover information of the last cell handover execution comprises:
determining the switching type according to whether the normal switching is executed or not, wherein the switching type is normal switching or abnormal switching;
or determining the switching type according to whether the conditional switching occurs, wherein the switching type is conditional switching or unconditional switching.
3. The method for reporting handover information according to claim 1, wherein a radio link failure occurs after performing a cell handover, and the obtaining handover information for performing a cell handover last time further comprises: determining a first time interval between a time when a cell handover is performed and a time when a radio link failure occurs, and adding the first time interval to the handover information.
4. The method of claim 3, wherein the reporting the handover information to the base station comprises:
and when the first time interval is smaller than a preset time threshold, reporting the switching information to a base station.
5. The method for reporting handover information according to claim 1, wherein the obtaining handover information of last cell handover further comprises:
and generating indication information of whether the switching command information aiming at the conditional switching is received in the cell with the radio link failure, and adding the indication information into the switching information.
6. The method of claim 1, wherein a radio link failure occurs after a cell handover procedure is performed, and the obtaining the handover information of the last cell handover further comprises:
and if the switching type is the conditional switching, determining a second time interval between the time of receiving the switching command information aiming at the conditional switching and the time of generating the radio link failure, and adding the second time interval into the switching information.
7. The method of claim 1, wherein the reporting the handover information to a base station comprises:
and reporting historical information to the base station, wherein the historical information comprises the switching information.
8. The method for reporting handover information according to claim 7, wherein the history information further includes one or more of the following:
the signal quality of the source cell and the signal quality of the target cell when cell switching is executed or triggered; signal quality of one or more beams of the target cell; the signal quality of the neighbor cell when performing a cell handover or when triggering the cell handover.
9. The method of claim 1, wherein the obtaining the handover information of the last cell handover execution comprises:
and recording the switching type of the last cell switching.
10. The method of claim 1, wherein the reporting the handover information to a base station comprises:
carrying the switching information in an RRC connection reestablishment request message or an RRC connection reestablishment completion message and reporting the switching information to the base station;
or, the switching information is recorded in a radio link failure report and reported to the base station.
11. The method of claim 1, wherein the reporting the handover information to a base station comprises:
and reporting the switching information to the base station according to reporting indication information received from the base station, wherein the reporting indication information is carried in an RRC connection reestablishment message or a terminal information request message.
12. A method for handover robustness optimization, comprising:
receiving switching information reported by user equipment, wherein the switching information comprises a switching type, and the switching type comprises normal switching and conditional switching;
and optimizing the robustness of the switching operation corresponding to the switching type.
13. The handover robustness optimization method according to claim 12, wherein the optimizing the robustness of the handover operation corresponding to the handover type comprises:
and judging a switching scene at least according to the switching information, and optimizing the robustness of the switching operation corresponding to the switching type.
14. A handover information reporting apparatus, comprising:
a switching information determining module, adapted to obtain switching information for performing cell switching last time, where the switching information includes a switching type, and the switching type includes normal switching and conditional switching;
and the switching information reporting module is suitable for reporting the switching information to a base station, so that the base station can optimize the robustness of the switching operation corresponding to the switching type.
15. The apparatus for reporting handover information according to claim 14, wherein the handover information determining module comprises:
a first handover type determining unit adapted to determine the handover type according to whether to perform the normal handover, the handover type being a normal handover or an abnormal handover;
and the second switching type determining unit is suitable for determining the switching type according to whether the conditional switching occurs or not, wherein the switching type is conditional switching or unconditional switching.
16. The apparatus for reporting handover information of claim 14, wherein the radio link failure occurs after the cell handover is performed, further comprising:
a first time interval determination module adapted to determine a first time interval between a time of performing a cell handover and a time of occurrence of a radio link failure, and to add the first time interval to the handover information.
17. The apparatus of claim 16, wherein the handover information reporting module reports the handover information to the base station when the first time interval is smaller than a preset time threshold.
18. The device for reporting handover information according to claim 14, further comprising:
and the indication information determining module is suitable for determining whether handover command information aiming at the conditional handover is received in a cell with a radio link failure or not when the handover type is the conditional handover so as to obtain indication information, and adding the indication information into the handover information.
19. The apparatus for reporting handover information of claim 14, wherein the radio link failure occurs after the cell handover procedure is performed, further comprising:
a second time interval determining module, adapted to determine a second time interval between a time when handover command information for the conditional handover is received and a time when a radio link failure occurs, and add the second time interval to the handover information, when the handover type is the conditional handover.
20. The apparatus for reporting handover information according to claim 14, wherein the handover information reporting module comprises:
and the historical information reporting unit is suitable for reporting the historical information to the base station, wherein the historical information comprises the switching information.
21. The apparatus according to claim 20, wherein the history information further includes one or more of the following:
the signal quality of the source cell and the signal quality of the target cell when cell switching is executed or triggered; signal quality of one or more beams of the target cell; the signal quality of the neighbor cell when performing a cell handover or when triggering the cell handover.
22. The apparatus for reporting handover information of claim 14, wherein the handover information determining module records a handover type of a last cell handover.
23. The apparatus according to claim 14, wherein the handover information reporting module carries the handover information in an RRC connection reestablishment request message or an RRC connection reestablishment complete message and reports the handover information to the base station;
or, the switching information reporting module reports the switching information recorded in a radio link failure report to the base station.
24. The apparatus for reporting handover information according to claim 14, wherein the handover information reporting module comprises:
and the reporting unit is suitable for reporting the switching information to the base station according to reporting indication information received from the base station, wherein the reporting indication information is carried in an RRC connection reestablishment message or a terminal information request message.
25. A handover robustness optimization apparatus, comprising:
the switching information receiving module is suitable for receiving switching information reported by user equipment, wherein the switching information comprises a switching type, and the switching type comprises normal switching and conditional switching;
and the optimization module is suitable for optimizing the robustness of the switching operation corresponding to the switching type.
26. The handover robustness optimization device of claim 25, wherein the optimization module determines a handover scenario at least according to the handover information, and optimizes robustness of a handover operation corresponding to the handover type.
27. A storage medium having a computer program stored thereon, wherein the computer program executes the steps of the handover information reporting method according to any one of claims 1 to 11, or executes the steps of the handover robustness optimization method according to any one of claims 12 to 13.
28. A user equipment comprising a memory and a processor, wherein the memory stores a computer program operable on the processor, and the processor executes the computer program to perform the steps of the handover information reporting method according to any one of claims 1 to 11.
29. A base station comprising a memory and a processor, the memory having stored thereon a computer program being executable on the processor, characterized in that the processor, when executing the computer program, performs the steps of the handover robustness optimization method of any of the claims 12 to 13.
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| CN111866937B (en) * | 2019-04-26 | 2023-07-21 | 中国移动通信有限公司研究院 | Information reporting and receiving method and device, related equipment and storage medium |
| WO2022021015A1 (en) * | 2020-07-27 | 2022-02-03 | Lenovo (Beijing) Limited | Method and apparatus for reporting time information of cho |
| CN114258094B (en) * | 2020-09-25 | 2023-11-21 | 展讯通信（上海）有限公司 | Method and device for requesting conditional switching, storage medium, terminal and base station |
| CN115696374A (en) * | 2021-07-27 | 2023-02-03 | 华为技术有限公司 | Wireless communication method and communication device |
| CN115696481A (en) * | 2021-07-29 | 2023-02-03 | 夏普株式会社 | Switching information reporting method and user equipment |
| WO2023132775A1 (en) * | 2022-01-06 | 2023-07-13 | Telefonaktiebolaget Lm Ericsson (Publ) | Systems and methods for user equipment history information update for conditional handover and conditional primary secondary cell group cell change |
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