CN116456410A

CN116456410A - Switching strategy selection method and measurement result reporting method

Info

Publication number: CN116456410A
Application number: CN202310425626.6A
Authority: CN
Inventors: 于江
Original assignee: Shanghai Xingsi Semiconductor Co ltd
Current assignee: Shanghai Xingsi Semiconductor Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-07-18

Abstract

The application provides a selection method of a switching strategy and a reporting method of a measurement result. The selection method of the switching strategy comprises the following steps: based on the changing state of the receiving channel of the UE, selecting to configure the L3-based triggered switching or configuring the L1/L2-based triggered switching. On one hand, when the channel variation of the UE is relatively large, the switching based on the L1/L2 trigger is configured, so that the UE can be switched to a target cell in time, and the link failure caused by untimely switching is avoided; on the other hand, when the channel change of the UE is smaller, the L3 trigger-based switching is configured, so that the influence of unnecessary frequent switching on the normal transmission of the service can be avoided.

Description

Switching strategy selection method and measurement result reporting method

Technical Field

The present application relates to the field of communications, and in particular, to a method for selecting a handover policy and a method for reporting a measurement result.

Background

The 3gpp r18 release introduced a cross-cell mobility mechanism based on L1/L2 (Layer 1/Layer 2) signaling, which extends the concept of L1 beam management within a cell to mobility management between cells, and instructs a terminal to perform cell handover through L1 measurement and reporting, and L1 or L2 signaling. The L1/L2-based handover may reduce service interruption delay and signaling overhead relative to an L3 (Layer 3) -based handover that is measured and triggered by RRC (Radio Resource Control, RRC) signaling. Wherein, L1, L2 and L3 are protocol layers corresponding to the wireless interface respectively, L1 is a physical layer; l2 is a data link layer, and includes, at the access network side: a MAC (Medium Access Control ) layer, RLC (Radio Link Control, radio link control) layer, PDCP (Packet Data Convergence Protoco, packet data convergence protocol) layer, and SDAP (Service Data Adaptation Protocol ) layer; l3 is a network layer, and comprises at an access network side: the RRC layer may refer to the definition of the 3GPP protocol for specific details, and the description of the present invention is omitted.

For the R18 version, there is not only a handover based on L3 measurement and triggered by RRC signaling, but also a handover based on L1 measurement and triggered by L1 or L2, and how to combine the two types of handover to use does not have a specific technical scheme at present, which may cause unnecessary signaling overhead caused by simultaneous configuration of the two types of handover, even cause occurrence of handover collision, and seriously affect normal transmission of services.

The above information disclosed in the background section is only for enhancement of understanding of the background art from the technology described herein and, therefore, may contain some information that does not form the prior art that is already known in the country to a person of ordinary skill in the art.

Disclosure of Invention

The main purpose of the application is to provide a method for selecting a switching strategy and a method for reporting a measurement result, so as to solve the technical problem of how to jointly use switching based on L1/L2 triggering and switching based on L3 triggering in the prior art.

According to an aspect of an embodiment of the present invention, there is provided a method for selecting a handover policy, including: selecting a configuration based on an L3-triggered handover or a configuration based on an L1/L2-triggered handover based on a change state of a reception channel of the UE, wherein the configuration based on the L3-triggered handover comprises: configuring measurement information related to triggering L3 handover for the UE; the configuration L1/L2-triggered handoff comprises: the UE is configured with measurement information related to triggering the L1/L2 handover.

Optionally, the selecting to configure the L3-based triggered handover or configuring the L1/L2-based triggered handover based on the change state of the reception channel of the UE includes: when a first measurement event reported by UE based on the change state of a receiving channel is received, selecting and configuring switching triggered based on L1/L2, wherein the first measurement event is used for indicating that the change amplitude of a measurement object is higher than a preset first change threshold; when a second measurement event reported by the UE based on the change state of the receiving channel is received, selecting and configuring switching triggered based on L3, wherein the second measurement event is used for indicating that the change amplitude of a measurement object is lower than a preset second change threshold; the first change threshold is larger than the second change threshold, and the measurement object corresponds to a current serving cell or a neighboring cell.

Optionally, the measurement object includes at least one of: the RSRP corresponding to the current service cell or the neighbor cell, the RSRQ corresponding to the current service cell or the neighbor cell, and the SINR corresponding to the current service cell or the neighbor cell.

Optionally, before selecting to configure the L3-based triggered handover or configuring the L1/L2-based triggered handover, the method further includes: and sending a measurement configuration message to the UE, so that the UE reports the first measurement event and/or the second measurement event based on the measurement configuration message.

Optionally, the configuring the L3-triggered handover further includes: configuring related measurement for triggering L1/L2 switching corresponding to a first neighbor cell for UE, wherein the first neighbor cell is a measurement neighbor cell corresponding to switching triggered based on L3; the configuration L1/L2-triggered handoff further comprises: and configuring related measurement corresponding to a second neighbor cell for the UE, wherein the related measurement is used for triggering L3 switching, and the second neighbor cell is a measurement neighbor cell corresponding to switching triggered based on L1/L2.

Optionally, the selecting to configure the L3-based triggered handover or configuring the L1/L2-based triggered handover based on the change state of the reception channel of the UE includes: and selecting configuration based on L1/L2 triggering switching when the motion rate of the UE is greater than a preset first rate threshold, and selecting configuration based on L3 triggering switching when the motion rate of the UE is less than a preset second rate threshold, wherein the first rate threshold is greater than the second rate threshold.

Optionally, before selecting to configure the L3-based triggered handover or configuring the L1/L2-based triggered handover, the method further includes: and receiving an A2 event sent by the UE, wherein the A2 event is used for indicating that the quality of the current service cell is poor than a configured absolute threshold.

According to an aspect of the embodiment of the present invention, there is provided a method for reporting a measurement result, including: and measuring the change state of the receiving channel, and transmitting a measurement result to a network side, so that the network side selects to configure L3-trigger-based switching or L1/L2-trigger-based switching based on the measurement result.

Optionally, before measuring the change state of the receiving channel and sending the measurement result to the network side, the method further includes: receiving a measurement configuration message sent by a network side, wherein the measurement configuration message is used for configuring a first measurement event and a second measurement event corresponding to a measurement object for UE, the measurement object corresponds to a current service cell or a neighboring cell, the first measurement event is used for indicating that the change amplitude of the measurement object is higher than a preset first change threshold, the second measurement event is used for indicating that the change amplitude of the measurement object is lower than a preset second change threshold, and the first change threshold is larger than the second change threshold.

Optionally, the measuring the change state of the receiving channel and sending the measurement result to the network side includes: acquiring real-time measured values corresponding to the measured objects at different moments; filtering the real-time measured value, and taking the filtered value as the measured value; calculating the absolute difference between the measured value corresponding to the later moment and the measured value corresponding to the former moment; reporting the first measurement event when the absolute difference is larger than a preset first change threshold; and reporting the second measurement event when the absolute difference is smaller than a preset second change threshold.

Optionally, filtering the real-time measurement value, and using the filtered value as the measurement value includes:

filtering the real-time measurement values at different moments by adopting the following formula:

Y(n)＝X(n)×α+(1-α)×Y(n-1)；

wherein Y (n) is the filtered measurement value corresponding to the time n, X (n) is the real-time measurement value corresponding to the time n, Y (n-1) is the filtered measurement value corresponding to the time n-1, and alpha is a filter coefficient.

According to another aspect of the embodiment of the present invention, there is provided a device for selecting a switching policy, including: a selection unit, configured to select, based on a change state of a reception channel of the UE, to configure an L3-based triggered handover or to configure an L1/L2-based triggered handover, where the configuring the L3-based triggered handover includes: configuring measurement information related to triggering L3 handover for the UE; the configuration L1/L2-triggered handoff comprises: the UE is configured with measurement information related to triggering the L1/L2 handover.

According to another aspect of the embodiment of the present invention, there is provided a reporting device for a measurement result, including: and the reporting unit is used for measuring the change state of the receiving channel and sending the measurement result to the network side, so that the network side selects to configure the L3-trigger-based switching or the L1/L2-trigger-based switching based on the measurement result.

According to still another aspect of the embodiment of the present invention, there is further provided a processor, configured to execute a program, where the program executes any one of the methods described above.

According to still another aspect of an embodiment of the present invention, there is provided a communication system including: the method comprises a processor and a plurality of UEs, wherein the processor executes the selection method of the handover policy or the reporting method of the measurement result described in any one of the above.

On one hand, when the channel variation of the UE is relatively large, the switching based on the L1/L2 trigger is configured, so that the UE can be switched to a target cell in time, and the link failure caused by untimely switching is avoided; on the other hand, when the channel change of the UE is smaller, the L3 trigger-based switching is configured, so that the influence of unnecessary frequent switching on the normal transmission of the service can be avoided.

The change state of the receiving channel is reported by adopting the measurement event, so that the signaling overhead of the UE on the network side can be saved, and the network transmission efficiency is improved.

When the L1/L2 trigger-based handover is configured, the relevant measurement for L3 handover corresponding to the second neighboring cell is suspended, or when the L3 trigger-based handover is configured, the relevant measurement for L1/L2 handover corresponding to the first neighboring cell is suspended, so that unnecessary wireless interface measurement and judgment can be avoided, and the power consumption of the UE can be saved.

The switching based on L1/L2 triggering is configured based on the motion rate selection, or the switching based on L3 triggering is configured, so that on one hand, the signaling interaction and signaling cost of a network side and UE can be reduced, and the network resource utilization rate is improved; on the other hand, the detection and judgment of the channel quality of the wireless interface can be reduced, and the power consumption of the UE is further saved.

Combining the existing A2 event, namely when the quality of the current serving cell is poor, selecting to configure the switching based on the L3 trigger or configuring the switching based on the L1/L2 trigger based on the change state of the receiving channel of the UE, so that unnecessary signaling interaction and wireless interface measurement can be reduced when the channel quality of the current serving cell is good, the channel utilization rate is improved, and the power consumption of the UE is reduced; when the current service cell has poor channel quality, selecting and configuring switching based on L3 triggering or switching based on L1/L2 triggering based on the change state of a receiving channel of the UE, and selecting a proper switching strategy.

The filtering algorithm is adopted to filter the real-time measured value, so that the change caused by channel fluctuation can be smoothed, and misjudgment caused by the channel fluctuation is avoided, thereby improving the probability of successful switching and the influence on service transmission.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 illustrates a flow chart of an embodiment of a method of selecting a handover strategy according to the present application;

FIG. 2 shows a flow chart of an embodiment of a method of reporting measurement results according to the present application;

fig. 3 shows a schematic diagram of an embodiment of a selection device of a switching strategy according to the present application;

fig. 4 shows a schematic diagram of an embodiment of a reporting device for measurement results according to the present application.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As described in the background art, for the R18 version, there are both a handover based on L3 measurement and triggered by RRC signaling and a handover based on L1 measurement and triggered by L1 or L2, and how to combine the two handover uses no specific technical solution at present, which may cause unnecessary signaling overhead caused by simultaneous configuration of the two handover and even cause occurrence of handover collision, and seriously affect normal transmission of services.

According to the embodiment of the application, a method for selecting a switching strategy and a method for reporting a measurement result are provided.

Fig. 1 is a flowchart of a method of selecting a handover policy according to an embodiment of the present application. As shown in fig. 1, the method comprises the steps of:

s101, selecting to configure L3-based triggering switching or L1/L2-based triggering switching based on the change state of a receiving channel of the UE, wherein the L3-based triggering switching comprises: configuring measurement information related to triggering L3 handover for the UE; the configuration L1/L2-triggered handoff comprises: the UE is configured with measurement information related to triggering the L1/L2 handover.

It should be specifically noted that L1/L2 as presented herein may include any of the following: l1, L2, L1 and L2, L1 or L2, L1/L2-based triggered handover refers to a handover defined in the 3GPP protocol that is measured and reported by L1, triggered by L1 or L2.

In a specific implementation, the network side may be implemented as a base station, but the implementation of the network side is not intended to be limited. For handover based on L3 triggering, a base station configures a UE (User equipment or User terminal) to detect a quality condition of a receiving channel of a serving cell or a neighboring cell, filters a measurement quantity, and reports a measurement report to the base station after meeting a related threshold value and lasting a certain triggering Time (Time-to-Trigger), and the base station configures the UE to complete handover between cells through RRC signaling; for L1/L2 (i.e., L1 or L2) triggered handover, the base station configures the UE to report measurement reports to the base station based on beam measurement of L1, and the handover is triggered by a relevant channel of L1/L2, for example, a MAC CE (Control Element) or DCI (Downlink Control Information ). The L1/L2-based handover may more quickly respond to changes in the radio channel and handover the UE to the target cell than the L3-based handover, thereby reducing the probability of radio link failure. However, the switching triggered based on L1/L2 may also introduce frequent switching due to normal fluctuation of the channel, affecting normal transmission of the service. The invention mainly considers from application scenes and provides a dynamic switching strategy selection method which comprises the following steps: when the change of a receiving channel at the UE side is relatively large, such as a high-speed motion scene, switching based on L1/L2 triggering is configured, so that the UE can be switched to a target cell in time; when the change of the receiving channel at the UE side is smaller, such as walking scene, the switching based on the L3 trigger is configured, so that the influence of unnecessary frequent switching on the normal transmission of the service is avoided.

In an implementation, the base station may send a measurement configuration message to the UE through RRC signaling, and configure the UE to detect measurement events related to a change state of the reception channel, including but not limited to: and the test object reports the measurement event of the base station, the threshold value, the triggering time and the like corresponding to the measurement event, the UE measures the measurement object based on the configuration message sent by the base station, and reports the measurement result to the base station when the reporting condition is met, and the base station selects to configure the L3-trigger-based switching or the L1/L2-trigger-based switching according to the measurement result reported by the UE.

In an embodiment of the present invention, a base station sends a measurement configuration message to a UE, so that the UE reports the first measurement event and/or the second measurement event based on the measurement configuration message, where the first measurement event is used to indicate that a change amplitude of a measurement object is higher than a preset first change threshold, and the second measurement event is used to indicate that a change amplitude of the measurement object is lower than a preset second change threshold, and the first change threshold is greater than the second change threshold.

In a specific implementation, the measurement object may be a measurement object corresponding to a current serving cell or a measurement object corresponding to a neighboring cell, where the definitions of the current serving cell and the neighboring cell may refer to the prior art, and the description of the present invention is omitted.

In an embodiment of the present invention, when a base station receives a first measurement event reported by a UE based on a change state of a reception channel, a configuration is selected to be based on L1/L2 triggered handover; and when the base station receives a second measurement event reported by the UE based on the change state of the receiving channel, selecting and configuring the L3-trigger-based switching.

The change state of the receiving channel is reported by adopting the measurement event, so that the signaling overhead of the base station reported by the UE can be saved, and the network transmission efficiency is improved.

In a specific implementation, the measurement object may be one or more of RSRP (Reference Signal Receiving Power, reference signal received power) corresponding to the current serving cell or the neighboring cell, RSRQ (Reference Signal Receiving Quality, reference signal received quality) corresponding to the current serving cell or the neighboring cell, and SINR (Signal to Interference plus Noise Ratio, signal to interference signal noise ratio) corresponding to the current serving cell or the neighboring cell. The specific definitions of RSRP, RSRP and SINR are the prior art, and the present invention will not be described in detail.

In a specific implementation, the base station may configure the UE with the L1/L2-based handover based on RRC signaling, or may configure the UE with the L3-based handover based on RRC signaling.

In a specific implementation, the configuration of the handover based on the L1/L2 trigger for the UE refers to configuration of measurement information related to triggering the L1/L2 handover for the UE, for example, configuration of the following information for the UE: the specific content of the neighbor cell, the measurement object, the measurement threshold, the reporting mode, etc. for measurement may refer to the definition of the 3gpp r18 version protocol, and the present invention will not be described in detail. And subsequently, when the reporting condition is met, the UE reports the measurement result, and the base station can configure the UE to complete the switching among cells based on the L1/L2 signaling.

In a specific implementation, the configuring the handover based on L3 triggering for the UE refers to configuring measurement information related to triggering the L3 handover for the UE, for example, the base station configures the following information for the UE: the specific content of the neighbor cell, the measurement object, the measurement event, the measurement threshold, the delay time, the reporting mode and the like for measurement can refer to the definition of the 3GPP 38.331 protocol, and the invention is not repeated. And subsequently, when the reporting condition is met, the UE reports the measurement result, and the base station can configure the UE to complete the handover between cells based on the L3 signaling (e.g. RRC signaling).

In a specific implementation, for the same neighboring cell, after configuring a handover based on L1/L2 trigger, that is, configuring a UE to start measurement related to L1/L2 handover for the neighboring cell, the UE may be configured to suspend related measurement for L3 handover corresponding to the neighboring cell; similarly, for the same neighboring cell, after configuring the L3 trigger based handover, the UE may be configured to suspend the related measurements for the L1/L2 handover corresponding to the neighboring cell.

In an embodiment of the present invention, configuring, for a UE, a related measurement for triggering L1/L2 handover corresponding to a first neighbor cell, where the first neighbor cell is a measurement neighbor cell corresponding to handover triggered based on L3; the configuration L1/L2-triggered handoff further comprises: and configuring related measurement corresponding to a second neighbor cell for the UE, wherein the related measurement is used for triggering L3 switching, and the second neighbor cell is a measurement neighbor cell corresponding to switching triggered based on L1/L2.

In a specific implementation, the first neighbor cell may be one measurement neighbor cell, or may be a plurality of measurement neighbor cells, and the second neighbor cell may be one measurement neighbor cell, or may be a plurality of measurement neighbor cells, where the measurement neighbor cell is a neighbor cell for performing handover measurement, and the specific definition may refer to the prior art, which is not repeated in the present invention.

In specific implementation, the handover triggered based on L1/L2 may be configured in the same RRC signaling, and meanwhile, the relevant measurement for L3 handover corresponding to the second neighbor cell may be suspended, or the handover triggered based on L1/L2 may be configured by using the first RRC signaling, and the relevant measurement for L3 handover corresponding to the second neighbor cell may be suspended by using the second RRC signaling, where the first RRC signaling and the second RRC signaling are different; similarly, the same RRC signaling may be configured to perform L3-triggered handover while suspending the measurement related to the L1/L2 handover corresponding to the first neighbor cell, or may be configured to perform L3-triggered handover by using the first RRC signaling, and suspend the measurement related to the L1/L2 handover corresponding to the first neighbor cell by using the second RRC signaling, where the first RRC signaling and the second RRC signaling are different.

In a specific embodiment, the channel changes faster due to the faster UE motion rate; and when the motion rate of the UE is slower, the change of the channel is slower, so that the switching based on the L1/L2 trigger can be configured directly based on the motion rate selection of the UE, or the switching based on the L3 trigger can be configured.

In an embodiment of the present invention, when the motion rate of the UE is greater than a preset first rate threshold, the configuration is selected based on L1/L2 triggered switching, and when the motion rate of the UE is less than a preset second rate threshold, the configuration is selected based on L3 triggered switching, wherein the first rate threshold is greater than the second rate threshold.

In a specific implementation, the base station can calculate the motion rate of the UE according to the position information of the UE, or can configure the UE to report the motion rate to the base station through signaling, which is not limited by the present invention.

Based on the motion rate, switching based on L1/L2 triggering is selected and configured, or switching based on L3 triggering is configured, on one hand, signaling interaction and signaling cost of a base station and UE can be reduced, and the network resource utilization rate is improved; on the other hand, the detection and judgment of the channel quality of the wireless interface can be reduced, and the power consumption of the UE is further saved.

In a specific implementation, the configuration based on the L3 trigger switch or the configuration based on the L1/L2 trigger switch may also be selected in combination with the existing measurement event (i.e., the related measurement event based on the L3 switch) and the change state of the receiving channel of the UE.

In an embodiment of the present invention, after receiving an A2 event sent by a UE, a base station selects to configure L3-triggered handover or L1/L2-triggered handover based on a change state of a receiving channel of the UE, where the A2 event is used to indicate that a quality of a current serving cell is worse than a configured absolute threshold, which is implemented for an existing product, and the present invention is not repeated.

It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.

Fig. 2 is a flowchart of a method for reporting measurement results according to an embodiment of the present application. As shown in fig. 2, the method comprises the steps of:

s201, measuring the change state of a receiving channel, and sending a measurement result to a network side, so that the network side selects to configure L3-based triggering switching or L1/L2-based triggering switching based on the measurement result.

In a specific implementation, the network side may be implemented as a base station, but the implementation of the network side is not intended to be limited. The base station configures the handover based on the L1/L2 triggering refers to configuring measurement information related to triggering the L1/L2 handover for the UE, for example, configuring the following information for the UE: the specific content of the neighbor cell, the measurement object, the measurement threshold, the reporting mode, etc. for measurement may refer to the definition of the 3gpp r18 version protocol, and the present invention will not be described in detail. And subsequently, when the reporting condition is met, the UE reports the measurement result, and the base station can configure the UE to complete the switching among cells based on the L1/L2 signaling.

In a specific implementation, the base station configuring handover based on L3 triggering refers to configuring measurement information related to triggering L3 handover for the UE, for example, the base station configures the following information for the UE: the specific content of the neighbor cell, the measurement object, the measurement event, the measurement threshold, the delay time, the reporting mode and the like for measurement can refer to the definition of the 3GPP 38.331 protocol, and the invention is not repeated. And subsequently, when the reporting condition is met, the UE reports the measurement result, and the base station can configure the UE to complete the handover between cells based on the L3 signaling (e.g. RRC signaling).

In an implementation, the receiving channel may be a reference signal corresponding to a current serving cell.

In a specific implementation, the UE may measure a reference signal of a current serving cell based on a configuration message sent by the base station, and report a measurement result to the base station after a configured reporting condition is satisfied.

In an embodiment of the present invention, a UE receives a measurement configuration message sent by a base station, where the measurement configuration message is used to configure a first measurement event and a second measurement event corresponding to a measurement object for the UE, where the measurement object corresponds to a current serving cell or a neighboring cell, the first measurement event is used to indicate that a change amplitude of the measurement object is higher than a preset first change threshold, and the second measurement event is used to indicate that the change amplitude of the measurement object is lower than a preset second change threshold, and the first change threshold is greater than the second change threshold.

In a specific implementation, the measurement object may be one or more of RSRP corresponding to the current serving cell or the neighboring cell, RSRQ corresponding to the current serving cell or the neighboring cell, and SINR corresponding to the current serving cell or the neighboring cell. The specific definitions of RSRP, RSRP and SINR are the prior art, and the present invention will not be described in detail.

In an implementation, the measurement configuration message sent by the base station may include: the method comprises the steps of measuring an object, a first change threshold corresponding to a first measurement event, a second change threshold corresponding to a second measurement event, a filter coefficient and the like.

In a specific implementation, in order to smooth the influence caused by channel fluctuation, the UE may filter the real-time measurement value of the measurement object, and determine the change threshold by using the filtered value.

In an embodiment of the present invention, the UE first obtains real-time measurement values corresponding to the measurement object at different times, then filters the real-time measurement values, uses the filtered values as measurement values, calculates an absolute difference between the measurement value corresponding to the next time and the measurement value corresponding to the previous time, and performs the following judgment: reporting the first measurement event when the absolute difference is larger than a preset first change threshold, and reporting the second measurement event when the absolute difference is smaller than a preset second change threshold.

In implementations, the UE may employ an alpha filtering algorithm to filter the real-time measurements.

In an embodiment of the present invention, the UE filters the real-time measurements at different moments using the following formula:

Y(n)＝X(n)×α+(1-α)×Y(n-1)；

The change state of the receiving channel is measured, and the measurement result is sent to the base station, so that the base station can select a switching strategy through the change state of the receiving channel of the UE, on one hand, when the change of the channel of the UE is relatively large, the switching based on the L1/L2 trigger is configured, so that the UE can be switched to a target cell in time, and the link failure caused by untimely switching is avoided; on the other hand, when the channel change of the UE is smaller, the L3 trigger-based switching is configured, so that the influence of unnecessary frequent switching on the normal transmission of the service can be avoided.

Fig. 3 is a schematic diagram of a selection device of a switching strategy according to an embodiment of the present application. As shown in fig. 3, the apparatus 30 includes: a selection unit 31, configured to select to configure the L3-based triggered handover or to configure the L1/L2-based triggered handover based on a change state of a reception channel of the UE.

In an implementation, the apparatus 30 may further include: a configuration unit 32, configured to send measurement configuration information to the UE through RRC signaling, and configure measurement information related to detecting a change state of the reception channel for the UE, including but not limited to: and the test object reports the measurement event of the base station, the threshold value, the triggering time and the like corresponding to the measurement event, the UE measures the measurement object based on the configuration message sent by the base station, and reports the measurement result to the base station when the reporting condition is met, and the base station selects to configure the L3-trigger-based switching or the L1/L2-trigger-based switching according to the measurement result reported by the UE.

In an embodiment of the present invention, the configuration unit 32 is configured to send a measurement configuration message to the UE, so that the UE reports a first measurement event and/or a second measurement event corresponding to a measurement object based on the measurement configuration message, where the first measurement event is used to indicate that a change amplitude of the measurement object is higher than a preset first change threshold, and the second measurement event is used to indicate that the change amplitude of the measurement object is lower than a preset second change threshold, where the first change threshold is greater than the second change threshold.

In a specific implementation, the measurement object may be a measurement object corresponding to a current serving cell, or may be a measurement object corresponding to a neighboring cell.

In an embodiment of the present invention, the selecting unit 31 is configured to select to configure the L1/L2 trigger-based handover when the base station receives a first measurement event reported by the UE based on a change state of a reception channel; and when the base station receives a second measurement event reported by the UE based on the change state of the receiving channel, selecting and configuring the L3-trigger-based switching.

In a specific implementation, the selecting unit 31 is configured to configure an L1/L2 trigger-based handover for the UE based on RRC signaling, and configure an L3 trigger-based handover for the UE based on RRC signaling.

In a specific implementation, the selecting unit 31 is configured to suspend, for the UE, relevant measurements for triggering L1/L2 handover corresponding to a first neighbor cell, where the first neighbor cell is a measurement neighbor cell corresponding to handover triggered based on L3; and configuring related measurement corresponding to a second neighbor cell for the UE, wherein the related measurement is used for triggering L3 switching, and the second neighbor cell is a measurement neighbor cell corresponding to switching triggered based on L1/L2.

In a specific implementation, the selecting unit 31 is configured to configure handover based on L1/L2 trigger in the same RRC signaling and suspend relevant measurement for L3 handover corresponding to the second neighbor cell, and the selecting unit 31 is also configured to configure handover based on L1/L2 trigger using independent RRC signaling and suspend relevant measurement for L3 handover corresponding to the second neighbor cell; similarly, the selecting unit 31 is configured to configure the handover based on the L3 trigger in the same RRC signaling and suspend the relevant measurement for the L1/L2 handover corresponding to the first neighbor cell, and the selecting unit 31 is also configured to configure the handover based on the L3 trigger by using an independent RRC signaling and suspend the relevant measurement for the L1/L2 handover corresponding to the first neighbor cell.

In a specific embodiment, the channel changes faster due to the faster UE motion rate; and when the motion rate of the UE is slower, the change of the channel is slower, so that the configuration of the L1/L2 trigger-based switching or the configuration of the L3 trigger-based switching can be selected directly based on the motion rate of the UE.

In an embodiment of the present invention, the selecting unit 31 is configured to select the configuration based on the L1/L2 triggered handover when the motion rate of the UE is greater than a preset first rate threshold, and select the configuration based on the L3 triggered handover when the motion rate of the UE is less than a preset second rate threshold, where the first rate threshold is greater than the second rate threshold.

In a specific implementation, the device 30 may calculate the motion rate of the UE according to the location information of the UE, or may configure the UE to report the motion rate to the base station through signaling, which is not limited in the present invention.

In a specific implementation, the configuration based on the L3 trigger switch or the configuration based on the L1/L2 trigger switch can be selected in combination with the existing measurement event (i.e., the related measurement event based on the L3 switch) and the change state of the receiving channel of the UE.

In an embodiment of the present invention, the selecting unit 31 is configured to select to configure the L3-based triggered handover or the L1/L2-based triggered handover based on a change state of a receiving channel of the UE after receiving an A2 event sent by the UE, where the A2 event is used to indicate that a quality of a current serving cell is worse than a configured absolute threshold, which is implemented for an existing product, and is not described in detail in the present invention.

Fig. 4 is a flowchart of a reporting device for measurement results according to an embodiment of the present application. As shown in fig. 4, the apparatus 40 includes: and 41, a reporting unit 41, configured to measure a change state of a receiving channel, and send a measurement result to a network side, so that the network side selects to configure the L3-based handover or configure the L1/L2-based handover based on the measurement result.

In a specific implementation, the reporting unit 41 is configured to measure a reference signal of a current serving cell based on a configuration message sent by a base station, and report a measurement result to the base station after a configured reporting condition is satisfied.

In one embodiment of the present invention, the apparatus 40 further includes: the receiving unit 42 is configured to receive a measurement configuration message sent by a base station, where the measurement configuration message is configured to configure a first measurement event and a second measurement event corresponding to a measurement object for a UE, where the measurement object corresponds to a current serving cell or a neighboring cell, the first measurement event is used to indicate that a change amplitude of the measurement object is higher than a preset first change threshold, and the second measurement event is used to indicate that the change amplitude of the measurement object is lower than a preset second change threshold, and the first change threshold is greater than the second change threshold.

In a specific implementation, in order to smooth the influence caused by the channel fluctuation, the reporting unit 41 is configured to filter the real-time measurement value of the measurement object, and determine the change threshold by using the filtered value.

In an embodiment of the present invention, the reporting unit 41 is configured to first obtain real-time measurement values corresponding to the measurement object at different times, then filter the real-time measurement values, use the filtered values as measurement values, calculate an absolute difference between the measurement value corresponding to the next time and the measurement value corresponding to the previous time, and determine as follows: reporting the first measurement event when the absolute difference is larger than a preset first change threshold, and reporting the second measurement event when the absolute difference is smaller than a preset second change threshold.

In implementations, the real-time measurements may be filtered using an alpha filtering algorithm.

In an embodiment of the present invention, the reporting unit 41 is configured to filter the real-time measurement values at different moments based on the following formula:

Y(n)＝X(n)×α+(1-α)×Y(n-1)；

The selection means 30 of the switching strategy and the reporting means 40 of the measurement result comprise a processor and a memory, wherein the selection means 31, the configuration means 32, the reporting means 41, the receiving means 42, etc. are stored in the memory as program means, and the processor executes the program means stored in the memory to realize the corresponding functions.

The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The kernel may set one or more, and the target UE is determined by adjusting the kernel parameters.

The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.

The embodiment of the invention provides a processor, which is used for running a program, wherein the program runs to execute the selection method of the switching strategy or the reporting method of the measurement result.

In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units may be a logic function division, and there may be another division manner when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the above-mentioned method of the various embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for selecting a handover policy, comprising:

selecting a configuration based on an L3-triggered handover or a configuration based on an L1/L2-triggered handover based on a change state of a reception channel of the UE, wherein the configuration based on the L3-triggered handover comprises: configuring measurement information related to triggering L3 handover for the UE; the configuration L1/L2-triggered handoff comprises: the UE is configured with measurement information related to triggering the L1/L2 handover.

2. The method of claim 1, wherein selecting either to configure the L3-based handover or to configure the L1/L2-based handover based on a changed state of a reception channel of the UE comprises:

when a first measurement event reported by UE based on the change state of a receiving channel is received, selecting and configuring switching triggered based on L1/L2, wherein the first measurement event is used for indicating that the change amplitude of a measurement object is higher than a preset first change threshold; when a second measurement event reported by the UE based on the change state of the receiving channel is received, selecting and configuring switching triggered based on L3, wherein the second measurement event is used for indicating that the change amplitude of a measurement object is lower than a preset second change threshold; the first change threshold is larger than the second change threshold, and the measurement object corresponds to a current serving cell or a neighboring cell.

3. The method of claim 2, wherein the measurement object comprises at least one of: the RSRP corresponding to the current service cell or the adjacent cell, the RSRQ corresponding to the current service cell or the adjacent cell and the SINR corresponding to the current service cell or the adjacent cell;

and/or the number of the groups of groups,

before the switching based on the L3 trigger is selected to be configured or the switching based on the L1/L2 trigger is configured, the method further comprises the following steps: sending a measurement configuration message to the UE, so that the UE reports the first measurement event and/or the second measurement event based on the measurement configuration message;

and/or the number of the groups of groups,

the configuring the L3-triggered based handover further comprises: configuring related measurement for triggering L1/L2 switching corresponding to a first neighbor cell for UE, wherein the first neighbor cell is a measurement neighbor cell corresponding to switching based on L3 triggering; the configuration L1/L2-triggered handoff further comprises: and configuring related measurement corresponding to a second neighbor cell for the UE, wherein the second neighbor cell is used for triggering L3 switching, and the second neighbor cell is a measurement neighbor cell corresponding to switching triggered based on L1/L2.

4. The method of claim 1, wherein selecting either to configure the L3-based handover or to configure the L1/L2-based handover based on a changed state of a reception channel of the UE comprises:

When the motion rate of the UE is greater than a preset first rate threshold, selecting configuration to be based on L1/L2 triggered switching; and when the running speed of the UE is smaller than a preset second speed threshold, selecting and configuring the L3-trigger-based switching, wherein the first speed threshold is larger than the second speed threshold.

5. The method according to any one of claims 1 to 4, wherein before selecting the configuration of the L3-based triggered handover or the configuration of the L1/L2-based triggered handover based on the changed state of the reception channel of the UE, further comprises:

and receiving an A2 event sent by the UE, wherein the A2 event is used for indicating that the quality of the current service cell is poor than a configured absolute threshold.

6. A method for reporting a measurement result, comprising:

and measuring the change state of the receiving channel, and transmitting a measurement result to a network side, so that the network side selects to configure L3-trigger-based switching or L1/L2-trigger-based switching based on the measurement result.

7. The method of claim 6, wherein before measuring the change state of the receiving channel and transmitting the measurement result to the network side, further comprising:

receiving a measurement configuration message sent by a network side, and reporting a first measurement event and a second measurement event corresponding to a measurement object based on the measurement configuration message, wherein the measurement object corresponds to a current serving cell or a neighboring cell, the first measurement event is used for indicating that the change amplitude of the measurement object is higher than a preset first change threshold, the second measurement event is used for indicating that the change amplitude of the measurement object is lower than a preset second change threshold, and the first change threshold is larger than the second change threshold.

8. The method of claim 7, wherein measuring the change state of the receiving channel and transmitting the measurement result to the network side comprises:

acquiring real-time measured values corresponding to the measured objects at different moments;

filtering the real-time measured value, and taking the filtered value as the measured value;

calculating the absolute difference between the measured value corresponding to the later moment and the measured value corresponding to the former moment;

reporting the first measurement event when the absolute difference is larger than a preset first change threshold;

and reporting the second measurement event when the absolute difference is smaller than a preset second change threshold.

9. A switching strategy selection device, comprising: a selection unit, configured to select, based on a change state of a reception channel of the UE, to configure an L3-based triggered handover or to configure an L1/L2-based triggered handover, where the configuring the L3-based triggered handover includes: configuring measurement information related to triggering L3 handover for the UE; the configuration L1/L2-triggered handoff comprises: the UE is configured with measurement information related to triggering the L1/L2 handover.

10. A reporting device for measurement results, comprising: and the reporting unit is used for measuring the change state of the receiving channel and sending the measurement result to the network side, so that the network side selects to configure the L3-trigger-based switching or the L1/L2-trigger-based switching based on the measurement result.

11. A processor for running a program, wherein the program when run performs the method of any one of claims 1 to 5 or the method of any one of claims 6 to 8.