CN113141638B - Method, terminal and network equipment for triggering condition switching or condition auxiliary cell change - Google Patents
Method, terminal and network equipment for triggering condition switching or condition auxiliary cell change Download PDFInfo
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- CN113141638B CN113141638B CN202010062919.9A CN202010062919A CN113141638B CN 113141638 B CN113141638 B CN 113141638B CN 202010062919 A CN202010062919 A CN 202010062919A CN 113141638 B CN113141638 B CN 113141638B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00837—Determination of triggering parameters for hand-off
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- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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Abstract
The embodiment of the invention provides a method, a terminal and network equipment for triggering condition switching or condition auxiliary cell change, wherein the method comprises the following steps: receiving at least two different execution conditions for triggering CHO or CPAC, triggering timer configuration information and pre-configuration information of a candidate target cell configured by network equipment, and completing corresponding configuration; when the measurement result of the cell reference signal quality is determined to meet all execution conditions configured by the network equipment, starting a common trigger timer corresponding to all the execution conditions; during the running period of the public triggering timer, continuously monitoring whether the measurement result meets all execution conditions, and if the measurement result does not meet a certain execution condition at a certain moment, stopping the public triggering timer; and if the common trigger timer is overtime, executing CHO or CPAC according to the configuration of the network equipment. The embodiment of the invention can ensure that the UE reasonably executes CHO or CPAC, avoids ping-pong switching and optimizes resource management.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a network device for triggering conditional handover or conditional secondary cell change.
Background
In order to meet the characteristic requirements of ultra-low time delay and ultra-high reliability of future wireless communication systems, 3GPP has developed a study of a mobility enhancement project based on Rel-15 NR and LTE. The handover technique in Rel-15 is based on LTE, but compared to LTE, the delay due to beam scanning of the ultra-high frequency range of beamforming in the NR system increases the handover interruption time. And 0ms interrupt time is one of the requirements of NR systems.
In order to reduce the handover interruption time and improve the handover reliability, a Conditional Handover (CHO) mechanism is introduced into Rel-16 NR and LTE. In the CHO mechanism, the network equipment configures candidate switching target cells and executing judgment conditions for the UE in advance according to a measurement report reported by the UE, and when the channel quality measured by the UE meets the condition switching judgment conditions, the UE automatically initiates switching by using reserved target cell resources according to the configuration of the network equipment, thereby greatly improving the switching success rate.
Further, in order to reduce configuration/activation/establishment delay of a serving cell in a Dual Connectivity (DC) and Carrier Aggregation (CA) scenario in an NR system and reduce signaling overhead, a Conditional secondary cell PSCell Addition/Change (CPAC) mechanism is also introduced into the Rel-16 NR. Similar to the CHO mechanism, the network device in the CPAC mechanism configures candidate PSCell target cells and PSCell increase or change execution decision conditions for the UE in advance according to a measurement report reported by the UE. When the channel quality measured by the UE meets the CPAC execution condition, the UE initiates a condition PSCell addition or change process according to the configuration of the network equipment, thereby further shortening the time delay, reducing the signaling overhead and improving the success rate.
For the conventional handover and conventional PSCell addition or change processes, the UE only needs to complete measurement and reporting according to the configuration of the network device, and the decision of handover and PSCell addition or change is completed by the network device. In order to avoid ping-pong handover, load balancing is reasonably performed, and the network device may select to configure different measurement configurations for the UE for the same measurement object, and configure a trigger parameter TimeToTrigger (hereinafter, referred to as "TTT") reported by measurement. And starting a timer when the measurement result of the UE meets the reporting condition, wherein the time length of the timer is TTT, and triggering measurement reporting if the measurement result of the UE still meets the reporting condition after the timer is overtime. Similarly, in the CHO and CPAC mechanisms, a parameter TTT is also introduced, that is, when the UE measurement result meets the execution condition of CHO or CPAC, the timer is started, and if the execution condition is still met after the timer is overtime, the CHO or CPAC procedure is executed. Further, to avoid ping-pong handover and to help the UE to select the target cell properly, in Rel-16 the base station can configure up to 2 different CHO or CPAC execution conditions for the same candidate target cell and provide that in this case CHO or CPAC execution can be triggered only if at least two conditions are simultaneously met.
In the LTE and NR system of Rel-16, due to the introduction of the CHO and CPAC mechanisms, the UE can perform measurement and decision according to the configuration of the network device, and when the CHO or CPAC execution condition is satisfied, it initiates the handover or PSCell addition/change process by itself. In order to avoid ping-pong handover and reasonably carry out load balancing, in a CHO and CPAC mechanism, a triggering parameter TTT is introduced, one TTT is independently configured for each measurement id, and when a measurement result corresponding to a certain measurement id of UE meets the execution condition of CHO or CPAC, a timer is started, wherein the time length of the timer is TTT. If the signal quality of the target cell still meets the execution condition after the timer is overtime, the CHO or CPAC process is executed. As shown in fig. 1, a schematic diagram of a TTT timer in the prior art is used, when a network device configures 2 different CHO or CPAC execution conditions for the same candidate target cell at the same time, and configures and maintains the TTT independently for each execution condition, how to ensure that 2 execution conditions are met at the same time is a new problem, and a new mechanism needs to be researched to ensure that 2 execution conditions are met at the same time to trigger the CHO or CPAC.
Disclosure of Invention
Embodiments of the present invention provide a method, a terminal, and a network device for triggering conditional handover or conditional secondary cell change, which overcome the above problems or at least partially solve the above problems.
In a first aspect, an embodiment of the present invention provides a method for triggering conditional handover or conditional secondary cell change, including:
receiving at least two different triggering condition switching CHO or conditional secondary cell change CPAC execution conditions, triggering timer configuration information and pre-configuration information of a candidate target cell configured by network equipment, and completing corresponding configuration;
when the measurement result of the cell reference signal quality is determined to meet all the execution conditions configured by the network equipment, starting a common trigger timer corresponding to all the execution conditions;
during the running period of the public triggering timer, continuously monitoring whether the measurement result meets all the execution conditions, and if the measurement result does not meet a certain execution condition at a certain moment, stopping the public triggering timer;
if the public trigger timer is overtime, executing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration;
the trigger timer configuration information includes: the trigger timer corresponding to each execution condition and a common trigger timer corresponding to all the execution conditions.
When the measurement result of determining the cell reference signal quality meets all the execution conditions configured by the network device, the step of starting the common trigger timer corresponding to all the execution conditions specifically includes:
at a first moment, if the measurement result meets a first execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a first trigger timer corresponding to the first execution condition, and continuing to measure the quality of a cell reference signal;
and at a second moment, if the measurement result meets a second execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a second triggering timer corresponding to the second execution condition, and if the first triggering timer is running at the moment, starting the common triggering timer and continuing to measure the quality of the cell reference signal.
Wherein, if it is monitored that the measurement result does not satisfy a certain execution condition at a certain time, the step of stopping the common trigger timer specifically comprises:
and if the measurement result does not meet the first execution condition or the second execution condition at the third moment, stopping the corresponding first trigger timer or the second trigger timer, stopping the common trigger timer, and ending the trigger judgment process.
Wherein, before the step of performing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration if the common trigger timer is overtime, the method further comprises:
at a fourth time, if the first trigger timer or the second trigger timer is overtime and the common trigger timer is still running, continuing to measure the quality of the cell reference signal, and judging whether the measurement result meets the first execution condition or the second execution condition, if so, starting or restarting the first trigger timer or the second trigger timer.
When the measurement result of determining the cell reference signal quality satisfies all the execution conditions configured by the network device, the step of starting the common trigger timer corresponding to all the execution conditions specifically includes:
at a first moment, if the measurement result meets a first execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a first trigger timer corresponding to the first execution condition, and continuing to measure the quality of a cell reference signal;
at a second moment, if the measurement result meets a second execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a second triggering timer corresponding to the second execution condition, and if the first triggering timer is running at the moment, restarting the first triggering timer and continuing to measure the quality of the cell reference signal;
the first trigger timer and the second trigger timer have the same duration, and the common trigger timer is specifically the first trigger timer or the second trigger timer.
Wherein, if it is monitored that the measurement result does not satisfy a certain execution condition at a certain time, the step of stopping the common trigger timer specifically comprises:
and if the measurement result does not meet the first execution condition or the second execution condition at the third moment, stopping the corresponding first trigger timer or the second trigger timer, and ending the trigger judgment process.
Wherein, if the common trigger timer is overtime, executing a step of Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration, specifically:
and if the first trigger timer and the second trigger timer are overtime at the same time at the fourth moment, executing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to the configuration of the network equipment.
In a second aspect, an embodiment of the present invention provides a method for triggering conditional handover or conditional secondary cell change, which is applied to a network device, and includes:
when at least two different execution conditions are configured for the same candidate target cell, configuring a trigger timer for each execution condition, and configuring a common trigger timer for all the execution conditions to generate trigger timer configuration information;
sending all the execution conditions, the configuration information of the trigger timer and the pre-configuration information of the candidate target cell to a User Equipment (UE) so that the UE starts the common trigger timer when the starting conditions of the common trigger timer are met, and executing conditional switching (CHO) or conditional secondary cell changing (CPAC) according to the pre-configuration information after the common trigger timer is overtime;
wherein the execution condition is specifically an execution condition of the conditional handover CHO or conditional secondary cell change CPAC;
the starting condition of the common trigger timer is specifically that the measurement result of the UE on the cell reference signal quality satisfies all the execution conditions.
In a third aspect, an embodiment of the present invention provides a terminal, including:
the configuration module is used for receiving at least two different execution conditions for triggering Conditional Handover (CHO) or conditional secondary cell change (CPAC) configured by the network equipment, triggering timer configuration information and pre-configuration information of a candidate target cell and completing corresponding configuration;
a starting module, configured to start a common trigger timer corresponding to all the execution conditions when it is determined that a measurement result of cell reference signal quality satisfies all the execution conditions configured by the network device;
a monitoring module, configured to continue to monitor whether the measurement result satisfies all the execution conditions during the operation of the common trigger timer, and stop the common trigger timer if it is monitored that the measurement result does not satisfy one of the execution conditions at a certain time;
the execution module is used for executing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration if the public trigger timer is overtime;
the trigger timer configuration information includes: the trigger timer corresponding to each execution condition and a common trigger timer corresponding to all the execution conditions.
In a fourth aspect, an embodiment of the present invention provides a network device, including:
the configuration module is used for configuring at least two different execution conditions for the same candidate target cell, configuring a trigger timer for each execution condition, configuring a common trigger timer for all the execution conditions and generating trigger timer configuration information;
a sending module, configured to send all the execution conditions, the configuration information of the trigger timer, and the pre-configuration information of the candidate target cell to a user equipment UE, so that the UE starts the common trigger timer when the starting conditions of the common trigger timer are met, and after the common trigger timer is overtime, performs conditional handover CHO or conditional secondary cell change CPAC according to the pre-configuration information;
wherein the execution condition is specifically an execution condition of the conditional handover CHO or conditional secondary cell change CPAC;
the starting condition of the common trigger timer is specifically that the measurement result of the UE on the cell reference signal quality satisfies all the execution conditions.
The method, the terminal and the network equipment for triggering condition switching or condition-assisted cell change provided by the embodiment of the invention provide a measurement configuration method for triggering CHO or CPAC execution aiming at a CHO or CPAC mechanism in an NR and LTE system of Rel-16 and later versions, ensure that UE reasonably executes the CHO or CPAC by introducing a new trigger timing mechanism, avoid ping-pong switching and optimize resource management.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a TTT timer in a conventional system;
fig. 2 is a flowchart illustrating a method for triggering conditional handover or conditional secondary cell change according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating an operation of a common trigger timer TTT according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a modified trigger timer according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a method for triggering conditional handover or conditional secondary cell change according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present invention;
fig. 8 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 2, a schematic flowchart of a method for triggering conditional handover or conditional secondary cell change according to an embodiment of the present invention is applied to a terminal, and includes:
specifically, the terminal UE receives at least two pre-configured execution conditions for triggering Conditional Handover (CHO) or conditional secondary cell change (CPAC), triggering timer configuration information and pre-configuration information of the candidate target cell, which are sent by the network device, and then the terminal UE completes local related configuration according to the received information.
specifically, on the basis of the prior art, the embodiment of the present invention introduces a new common trigger timer TTT, which is used to ensure that the UE triggers conditional handover CHO or conditional secondary cell change CPAC after all execution conditions of the conditional handover CHO or conditional secondary cell change CPAC configured by the network device are met.
And when the measurement result of the UE on the cell reference signal quality can meet the execution condition that the network equipment configures all different triggering conditions for switching CHO or the conditional secondary cell changes CPAC, starting a common triggering timer corresponding to all the execution conditions.
It can be understood that, when the measurement result of the UE on the cell reference signal quality satisfies a certain execution condition, the trigger timer corresponding to the execution condition is started, and therefore, when the measurement result of the UE on the cell reference signal quality can satisfy all different trigger condition handover CHO configured by the network device or the condition auxiliary cell changes the execution condition of CPAC, the common trigger timer is started.
The duration of the common trigger timer may be the same as or different from the duration of the trigger timer corresponding to each of the execution conditions of the CHO or the conditional secondary cell change CPAC.
specifically, during the running period of the common trigger timer, whether the measurement result satisfies all the execution conditions is continuously monitored, and if it is monitored that the measurement result does not satisfy one of the execution conditions at a certain time, the common trigger timer is stopped while the trigger timer corresponding to the execution condition is stopped. It can be understood that, at a certain time, if the measurement result of the UE on the cell reference signal quality cannot satisfy any of the execution conditions for the triggering condition handover CHO or the condition for the secondary cell to change the CPAC, the corresponding triggering timer is stopped, and at the same time, the common triggering timer is stopped, and the current triggering determination process is ended.
And 103, if the common trigger timer is overtime, executing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration.
Since the common trigger timer is stopped when the trigger timer corresponding to any execution condition is stopped, when the common trigger timer is overtime, it indicates that the measurement result of the UE can simultaneously satisfy the execution conditions of all the triggering condition switching CHO or the conditional secondary cell changing CPAC configured by the network device within the duration range of the common trigger timer, and then the UE performs the conditional switching CHO or the conditional secondary cell changing CPAC according to the configuration of the network device.
The method for triggering condition switching or condition auxiliary cell change provided by the embodiment of the invention provides a measurement configuration method for triggering CHO or CPAC execution aiming at a CHO or CPAC mechanism in NR and LTE systems of Rel-16 and later versions, and ensures that UE reasonably executes the CHO or CPAC by introducing a new trigger timing mechanism, thereby avoiding ping-pong switching and optimizing resource management.
Based on the content of the foregoing embodiment, in step 101, that is, when the measurement result of determining the cell reference signal quality satisfies all the execution conditions configured by the network device, the step of starting the common trigger timer corresponding to all the execution conditions specifically includes:
at a first moment, if the measurement result meets a first execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a first trigger timer corresponding to the first execution condition, and continuing to measure the quality of a cell reference signal;
and at a second moment, if the measurement result meets a second execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a second triggering timer corresponding to the second execution condition, and if the first triggering timer is running at the moment, starting the common triggering timer and continuing to measure the quality of the cell reference signal.
Specifically, the embodiment of the present invention is described by taking an example of configuring two execution conditions at the same time. At a first moment, if the measurement result meets a first execution condition of triggering condition switching CHO or conditional secondary cell changing CPAC, starting a first triggering timer corresponding to the first execution condition and continuing to measure the quality of the cell reference signal, and if the measurement result of the quality of the cell reference signal does not meet the first execution condition at a certain moment, stopping the first triggering timer;
at a second moment, if the measurement result meets a second execution condition of triggering condition switching CHO or condition secondary cell changing CPAC, starting a second trigger timer corresponding to the second execution condition, and if the first trigger timer is still running at the moment, indicating that the measurement result of the cell reference signal quality at the current moment meets the execution conditions of all triggering condition switching CHO or condition secondary cell changing CPAC, starting a common trigger timer and continuing to measure the quality of the cell reference signal.
It is understood that for the case of three and more execution conditions, the condition for starting the common trigger timer is still that the measurement result of the cell reference signal quality satisfies all the trigger conditions configured by the network equipment, i.e. the CHO or the conditional secondary cell change CPAC execution condition, and those skilled in the art can refer to the above two execution conditions without creative efforts.
Based on the content of the foregoing embodiment, if it is monitored that the measurement result does not satisfy the certain execution condition at a certain time, the step of stopping the common trigger timer specifically includes:
and if the measurement result does not meet the first execution condition or the second execution condition at the third moment, stopping the corresponding first trigger timer or the second trigger timer, stopping the common trigger timer, and ending the trigger judgment process.
Specifically, before the common trigger timer times out, if the measurement result of the quality of the cell reference signal cannot satisfy a certain execution condition, the trigger timer corresponding to the execution condition is stopped, the common trigger timer is stopped at the same time, the current trigger determination process is ended, and the next trigger determination process is started.
Based on the content of the foregoing embodiment, before the step of performing conditional handover CHO or conditional secondary cell change CPAC according to network device configuration if the common trigger timer expires, the method further includes:
at a fourth time, if the first trigger timer or the second trigger timer is overtime and the common trigger timer is still running, continuing to measure the quality of the cell reference signal, and judging whether the measurement result meets the first execution condition or the second execution condition, if so, starting or restarting the first trigger timer or the second trigger timer.
Specifically, before the common trigger timer is overtime, if the trigger timer corresponding to a certain execution condition is overtime, the quality of the cell reference signal is continuously measured at this time, and whether the measurement result meets the execution condition is determined, and if the measurement result meets the execution condition, the trigger timer corresponding to the execution condition is started or restarted.
And at the fifth moment, the common trigger timer TTT is overtime, and the UE executes Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to the configuration of the network equipment.
Fig. 3 is a schematic operational diagram of a common triggered timer TTT according to an embodiment of the present invention, including:
at t 1 At the moment, the measurement result of the UE meets the execution condition 1, and the trigger timer TTT corresponding to the execution condition 1 is started 1 And continuing to measure;
at t 2 At the moment, the measurement result of the UE meets the execution condition 2, and the trigger timer TTT corresponding to the execution condition 2 is started 2 If the trigger timer TTT corresponding to the condition 1 is executed at this time 1 If the system is running, starting a common trigger timer TTT and continuing to measure;
at t 3 At that time, the UE finds that the measurement result does not satisfy the execution condition 1 (or the execution condition 2), and stops the corresponding trigger timer TTT 1 (or TTT 2 ) The common trigger timer TTT is stopped. When the UE meets 2 execution conditions again, the common trigger timer is started again to start a new trigger judgment process;
at t 4 Time of day, trigger timer TTT 1 (or TTT 2 ) If the common TTT is still running at the time, continuing to measure and judging whether the execution condition 1 (or the execution condition 2) is met, if the execution condition 1 (or the execution condition 2) is met, starting or restarting the trigger timer TTT 1 (or TTT 2 )；
At time t5, the common trigger timer TTT times out and the UE performs CHO or CPAC according to the network equipment configuration.
The operation of the common trigger timer according to the embodiment of the present invention is shown in table 1.
TABLE 1 common trigger timer related operations
In another embodiment of the present invention, on the basis of the above embodiment, when the measurement result of determining the cell reference signal quality satisfies the execution condition of all triggering conditions configured by the network device for switching CHO or conditional secondary cell changing CPAC, the step of starting the common triggering timer corresponding to all the execution conditions specifically includes:
at a first moment, if the measurement result meets a first execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a first trigger timer corresponding to the first execution condition, and continuing to measure the quality of a cell reference signal;
at a second moment, if the measurement result meets a second execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a second triggering timer corresponding to the second execution condition, and if the first triggering timer is running at the moment, restarting the first triggering timer and continuing to measure the quality of the cell reference signal;
the first trigger timer and the second trigger timer have the same duration, and the common trigger timer is specifically the first trigger timer or the second trigger timer.
Specifically, in this embodiment, the durations of the trigger timers corresponding to each execution condition for switching the CHO or changing the CPAC by the conditional secondary cell configured by the network device are all equal, and the network device does not introduce a new common timing trigger but utilizes any trigger timer as the common trigger timer.
The following description will be made by taking 2 execution conditions as an example. The first trigger timer and the second trigger timer are equal in duration, and the network device does not introduce a new common timing trigger but utilizes the first trigger timer or the second trigger timer as the common trigger timer. Fig. 4 is a schematic diagram illustrating an operation of a modified trigger timer according to an embodiment of the present invention.
At a first time t 1 If the measurement result of the cell reference signal quality by the UE meets the first execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a first trigger timer TTT corresponding to the first execution condition 1 And continuing to measure the quality of the cell reference signal;
at a second time t 2 If the measurement result of the UE on the quality of the cell reference signal meets the triggering condition, switching the CHO or the condition is assistedWhen the cell changes the second execution condition of the CPAC, a second trigger timer TTT corresponding to the second execution condition is started 2 If the first trigger timer TTT is started, the first trigger timer TTT is started 1 Restarting the first trigger timer TTT when the system is running 1 And continuing to measure the quality of the cell reference signal.
Correspondingly, if it is monitored that the measurement result does not satisfy a certain execution condition at a certain time, the step of stopping the common trigger timer specifically includes:
and if the measurement result does not meet the first execution condition or the second execution condition at the third moment, stopping the corresponding first trigger timer or the second trigger timer, and ending the trigger judgment process.
Specifically, if at the third time t 3 If the measurement result does not satisfy the first or second execution condition, the corresponding first trigger timer TTT is stopped 1 Or a second trigger timer TTT 2 And ending the triggering judgment process, and restarting a new triggering judgment process when the measurement result of the UE meets 2 execution conditions simultaneously again.
Correspondingly, if the common trigger timer is overtime, executing a step of Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration, specifically:
and if the first trigger timer and the second trigger timer are overtime at the same time at the fourth moment, executing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to the configuration of the network equipment.
Specifically, if at the fourth time, the first trigger timer TTT 1 And a second trigger timer TTT 2 And if the time is out, executing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to the configuration of the network equipment.
Compared with a mechanism of introducing a new timer, the embodiment of the invention further perfects the operation of the existing trigger timer by increasing the restarting condition and can also solve the problem of triggering timing when the UE configures a plurality of execution conditions. However, this method requires that the TTT durations corresponding to the multiple execution conditions configured at the same time are the same
Fig. 5 is a flowchart of a method for triggering conditional handover or conditional secondary cell change according to an embodiment of the present invention, which is applied to a network device, and includes:
specifically, the execution subject of the embodiment of the present invention is a network device, and is different from the prior art in that when the network device configures at least two different execution conditions for the same candidate target cell, a trigger timer is configured for each execution condition, and a common trigger timer is configured for all execution conditions, so as to generate trigger timer configuration information.
wherein the execution condition is specifically an execution condition of the conditional handover CHO or the conditional secondary cell changing CPAC;
the starting condition of the common trigger timer is specifically that the measurement result of the UE on the cell reference signal quality satisfies all the execution conditions.
Specifically, the network device sends all the execution conditions, the configuration information of the trigger timer and the pre-configuration information of the candidate target cell to a User Equipment (UE) so that the UE starts the common trigger timer when the starting conditions of the common trigger timer are met, and automatically initiates Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to the pre-configuration information after the common trigger timer is overtime, thereby ensuring that the UE reasonably executes the CHO or CPAC, avoiding ping-pong handover, and optimizing resource management.
Fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention, including: a configuration module 610, an activation module 620, a monitoring module 630, and an execution module 640, wherein,
a configuration module 610, configured to receive at least two different execution conditions for triggering Conditional Handover (CHO) or conditional secondary cell change (CPAC), triggering timer configuration information, and pre-configuration information of a candidate target cell, configured by a network device, and complete corresponding configurations;
a starting module 620, configured to start a common trigger timer corresponding to all the execution conditions when it is determined that the measurement result of the cell reference signal quality meets all the execution conditions configured by the network device;
a monitoring module 630, configured to continue to monitor whether the measurement result meets all the execution conditions during the operation of the common trigger timer, and stop the common trigger timer if it is monitored that the measurement result does not meet a certain execution condition at a certain time;
an executing module 640, configured to execute Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network device configuration if the common trigger timer is overtime;
the trigger timer configuration information includes: the trigger timer corresponding to each execution condition and a common trigger timer corresponding to all the execution conditions.
The terminal provided in the embodiment of the present invention is configured to implement the method embodiment for triggering condition handover or changing a conditional secondary cell, and therefore, for understanding each functional module of the terminal, reference may be made to the description in the method embodiment, which is not described herein again.
The terminal provided by the embodiment of the invention starts the common trigger timer when determining that the measurement result of the cell reference signal quality meets the execution conditions of all CHO or CPAC configured by the network equipment, and automatically initiates the CHO or CPAC after the common trigger timer is overtime, so that the terminal can avoid ping-pong switching, and the resource management and the load balance are optimized.
Fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present invention, including: a configuration module 710 and a sending module 720, wherein,
a configuration module 710, configured to configure at least two different execution conditions for the same candidate target cell, configure a trigger timer for each execution condition, and configure a common trigger timer for all execution conditions to generate trigger timer configuration information;
a sending module 720, configured to send all the execution conditions, the triggering timer configuration information, and the pre-configuration information of the candidate target cell to a user equipment UE, so that the UE starts the common triggering timer when the starting conditions of the common triggering timer are met, and after the common triggering timer is overtime, performs conditional handover CHO or conditional secondary cell change CPAC according to the pre-configuration information;
wherein the execution condition is specifically an execution condition of the conditional handover CHO or conditional secondary cell change CPAC;
the starting condition of the common trigger timer is specifically that the measurement result of the UE on the cell reference signal quality satisfies all the execution conditions.
The network device provided by the embodiment of the invention configures a common trigger timer for all the execution conditions while configuring a trigger timer for each execution condition when configuring at least two different execution conditions for the same candidate target cell, thereby helping the UE to avoid ping-pong handover and optimizing resource management and load balancing.
Fig. 8 is a schematic entity structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 8, the electronic device may include: a processor (processor)810, a communication Interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication Interface 820 and the memory 830 communicate with each other via the communication bus 840. The processor 810 may invoke a computer program stored on the memory 830 and executable on the processor 810 to perform the methods of triggering a conditional handover or a conditional secondary cell change provided by the above-described method embodiments, including, for example: receiving at least two different triggering condition switching CHO or conditional secondary cell change CPAC execution conditions, triggering timer configuration information and pre-configuration information of a candidate target cell configured by network equipment, and completing corresponding configuration; when the measurement result of the cell reference signal quality is determined to meet all the execution conditions configured by the network equipment, starting a common trigger timer corresponding to all the execution conditions; during the running period of the public triggering timer, continuously monitoring whether the measurement result meets all the execution conditions, and if the measurement result does not meet a certain execution condition at a certain moment, stopping the public triggering timer; if the public trigger timer is overtime, executing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration; the trigger timer configuration information includes: the trigger timer corresponding to each execution condition and a common trigger timer corresponding to all the execution conditions.
The processor 810 may invoke a computer program stored on the memory 830 and executable on the processor 810 to perform the methods of triggering a conditional handover or a conditional secondary cell change provided by the above-described method embodiments, including, for example: when at least two different execution conditions are configured for the same candidate target cell, configuring a trigger timer for each execution condition, and configuring a common trigger timer for all the execution conditions to generate trigger timer configuration information; sending all the execution conditions, the configuration information of the trigger timer and the pre-configuration information of the candidate target cell to a User Equipment (UE) so that the UE starts the common trigger timer when the starting conditions of the common trigger timer are met, and executing conditional switching (CHO) or conditional secondary cell changing (CPAC) according to the pre-configuration information after the common trigger timer is overtime; wherein the execution condition is specifically an execution condition of the conditional handover CHO or conditional secondary cell change CPAC; the starting condition of the common trigger timer is specifically that the measurement result of the UE on the cell reference signal quality satisfies all the execution conditions.
In addition, the logic instructions in the memory 830 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
An embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for triggering conditional handover or conditional secondary cell change provided in the foregoing method embodiments, for example, the method includes: receiving at least two different triggering condition switching CHO or conditional secondary cell change CPAC execution conditions, triggering timer configuration information and pre-configuration information of a candidate target cell configured by network equipment, and completing corresponding configuration; when the measurement result of the cell reference signal quality is determined to meet all the execution conditions configured by the network equipment, starting a common trigger timer corresponding to all the execution conditions; during the running period of the public triggering timer, continuously monitoring whether the measurement result meets all the execution conditions, and if the measurement result does not meet a certain execution condition at a certain moment, stopping the public triggering timer; if the public trigger timer is overtime, executing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration; the trigger timer configuration information includes: the trigger timer corresponding to each execution condition and a common trigger timer corresponding to all the execution conditions.
An embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for triggering conditional handover or conditional secondary cell change provided in the foregoing method embodiments, for example, the method includes: when at least two different execution conditions are configured for the same candidate target cell, configuring a trigger timer for each execution condition, and configuring a common trigger timer for all the execution conditions to generate trigger timer configuration information; sending all the execution conditions, the configuration information of the trigger timer and the pre-configuration information of the candidate target cell to a User Equipment (UE) so that the UE starts the common trigger timer when the starting conditions of the common trigger timer are met, and executing conditional switching (CHO) or conditional secondary cell changing (CPAC) according to the pre-configuration information after the common trigger timer is overtime; wherein the execution condition is specifically an execution condition of the conditional handover CHO or the conditional secondary cell changing CPAC; the starting condition of the common trigger timer is specifically that the measurement result of the UE on the cell reference signal quality satisfies all the execution conditions.
The above-described embodiments of the apparatus are merely illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on at least two network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for triggering condition switching or condition secondary cell change is applied to a terminal and is characterized by comprising the following steps:
receiving at least two different triggering condition switching CHO or conditional secondary cell change CPAC execution conditions, triggering timer configuration information and pre-configuration information of a candidate target cell configured by network equipment, and completing corresponding configuration;
when the measurement result of the cell reference signal quality is determined to meet all the execution conditions configured by the network equipment, starting a common trigger timer corresponding to all the execution conditions;
during the running period of the public triggering timer, continuously monitoring whether the measurement result meets all the execution conditions, and if the measurement result does not meet a certain execution condition at a certain moment, stopping the public triggering timer;
if the public trigger timer is overtime, executing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration;
the trigger timer configuration information includes: a trigger timer corresponding to each execution condition and a common trigger timer corresponding to all the execution conditions;
when the measurement result of determining the cell reference signal quality meets all the execution conditions configured by the network device, the step of starting the common trigger timer corresponding to all the execution conditions specifically includes:
at a first moment, if the measurement result meets a first execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a first trigger timer corresponding to the first execution condition, and continuing to measure the quality of a cell reference signal;
and at a second moment, if the measurement result meets a second execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a second triggering timer corresponding to the second execution condition, and if the first triggering timer is running at the moment, starting the common triggering timer and continuing to measure the quality of the cell reference signal.
2. The method for triggering conditional handover or conditional secondary cell change according to claim 1, wherein the step of stopping the common trigger timer if it is monitored that the measurement result does not satisfy the certain execution condition at a certain time is specifically:
and if the measurement result does not meet the first execution condition or the second execution condition at the third moment, stopping the corresponding first trigger timer or the second trigger timer, stopping the common trigger timer, and ending the trigger judgment process.
3. The method of claim 2, further comprising, before the step of performing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration if the common trigger timer expires:
at a fourth time, if the first trigger timer or the second trigger timer is overtime and the common trigger timer is still running, continuing to measure the quality of the cell reference signal, and judging whether the measurement result meets the first execution condition or the second execution condition, if so, starting or restarting the first trigger timer or the second trigger timer.
4. The method of claim 1, wherein the step of starting a common trigger timer corresponding to all the execution conditions when the measurement result of the cell reference signal quality is determined to satisfy all the execution conditions configured by the network device specifically includes:
at a first moment, if the measurement result meets a first execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a first trigger timer corresponding to the first execution condition, and continuing to measure the quality of a cell reference signal;
at a second moment, if the measurement result meets a second execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a second triggering timer corresponding to the second execution condition, and if the first triggering timer is running at the moment, restarting the first triggering timer and continuing to measure the quality of the cell reference signal;
the first trigger timer and the second trigger timer have the same duration, and the common trigger timer is specifically the first trigger timer or the second trigger timer.
5. The method of triggering conditional handover or conditional secondary cell change according to claim 4, wherein the step of stopping the common trigger timer if it is monitored that the measurement result does not satisfy the certain execution condition at a certain time is specifically:
and if the measurement result does not meet the first execution condition or the second execution condition at the third moment, stopping the corresponding first trigger timer or the second trigger timer, and ending the trigger judgment process.
6. The method of claim 5, wherein if the common trigger timer expires, the step of performing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration comprises:
and if the first trigger timer and the second trigger timer are overtime at the same time at the fourth moment, executing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to the configuration of the network equipment.
7. A method for triggering conditional handover or conditional secondary cell change is applied to a network device, and is characterized by comprising the following steps:
when at least two different execution conditions are configured for the same candidate target cell, configuring a trigger timer for each execution condition, and configuring a common trigger timer for all the execution conditions to generate trigger timer configuration information;
sending all the execution conditions, the configuration information of the trigger timer and the pre-configuration information of the candidate target cell to a User Equipment (UE) so that the UE starts the common trigger timer when the starting conditions of the common trigger timer are met, and executing conditional switching (CHO) or conditional secondary cell changing (CPAC) according to the pre-configuration information after the common trigger timer is overtime;
wherein the execution condition is specifically an execution condition of the conditional handover CHO or conditional secondary cell change CPAC;
the starting condition of the common trigger timer is specifically that the measurement result of the UE on the cell reference signal quality meets all the execution conditions;
when determining that the measurement result of the cell reference signal quality meets all the execution conditions configured by the network device, starting a common trigger timer corresponding to all the execution conditions, specifically:
at a first moment, if the measurement result meets a first execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a first trigger timer corresponding to the first execution condition, and continuing to measure the quality of a cell reference signal;
and at a second moment, if the measurement result meets a second execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a second triggering timer corresponding to the second execution condition, and if the first triggering timer is running at the moment, starting the common triggering timer and continuing to measure the quality of the cell reference signal.
8. A terminal, comprising:
the configuration module is used for receiving at least two different execution conditions for triggering Conditional Handover (CHO) or conditional secondary cell change (CPAC) configured by the network equipment, triggering timer configuration information and pre-configuration information of a candidate target cell and completing corresponding configuration;
a starting module, configured to start a common trigger timer corresponding to all the execution conditions when it is determined that a measurement result of cell reference signal quality satisfies all the execution conditions configured by the network device;
a monitoring module, configured to continue to monitor whether the measurement result satisfies all the execution conditions during the operation of the common trigger timer, and stop the common trigger timer if it is monitored that the measurement result does not satisfy one of the execution conditions at a certain time;
the execution module is used for executing Conditional Handover (CHO) or conditional secondary cell change (CPAC) according to network equipment configuration if the public trigger timer is overtime;
the trigger timer configuration information includes: a trigger timer corresponding to each execution condition and a common trigger timer corresponding to all the execution conditions;
when the measurement result of determining the cell reference signal quality meets all the execution conditions configured by the network device, the step of starting the common trigger timer corresponding to all the execution conditions specifically includes:
at a first moment, if the measurement result meets a first execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a first trigger timer corresponding to the first execution condition, and continuing to measure the quality of a cell reference signal;
and at a second moment, if the measurement result meets a second execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a second triggering timer corresponding to the second execution condition, and if the first triggering timer is running at the moment, starting the common triggering timer and continuing to measure the quality of the cell reference signal.
9. A network device, comprising:
the configuration module is used for configuring at least two different execution conditions for the same candidate target cell, configuring a trigger timer for each execution condition, configuring a common trigger timer for all the execution conditions and generating trigger timer configuration information;
a sending module, configured to send all the execution conditions, the configuration information of the trigger timer, and the pre-configuration information of the candidate target cell to a user equipment UE, so that the UE starts the common trigger timer when the starting conditions of the common trigger timer are met, and after the common trigger timer is overtime, performs conditional handover CHO or conditional secondary cell change CPAC according to the pre-configuration information;
wherein the execution condition is specifically an execution condition of the conditional handover CHO or conditional secondary cell change CPAC;
the starting condition of the common trigger timer is specifically that the measurement result of the UE on the cell reference signal quality meets all the execution conditions;
the starting the common trigger timer when the starting condition of the common trigger timer is met comprises the following steps:
at a first moment, if the measurement result meets a first execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a first trigger timer corresponding to the first execution condition, and continuing to measure the quality of a cell reference signal;
and at a second moment, if the measurement result meets a second execution condition of triggering condition switching CHO or condition auxiliary cell changing CPAC, starting a second triggering timer corresponding to the second execution condition, and if the first triggering timer is running at the moment, starting the common triggering timer and continuing to measure the quality of the cell reference signal.
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| CN115915304A (en) * | 2021-09-30 | 2023-04-04 | 华为技术有限公司 | Communication method and device |
| WO2023164837A1 (en) * | 2022-03-02 | 2023-09-07 | 北京小米移动软件有限公司 | Timer control method and apparatus, communication device, and storage medium |
| CN117413566A (en) * | 2022-04-22 | 2024-01-16 | 北京小米移动软件有限公司 | Mobility management method and device for terminal equipment |
| CN116980992A (en) * | 2022-04-22 | 2023-10-31 | 维沃移动通信有限公司 | Condition switching configuration method, terminal and network side equipment |
| CN117015076A (en) * | 2022-04-27 | 2023-11-07 | 维沃移动通信有限公司 | Connection recovery method, cell switching method and device |
| WO2023230960A1 (en) * | 2022-06-01 | 2023-12-07 | Oppo广东移动通信有限公司 | Measurement information reporting method and apparatus, measurement information receiving method and apparatus, device, and storage medium |
| CN117336800A (en) * | 2022-06-24 | 2024-01-02 | 华为技术有限公司 | Measurement configuration method and communication device |
| CN117479242A (en) * | 2022-07-21 | 2024-01-30 | 维沃移动通信有限公司 | Processing method, device and terminal of conditional configuration information |
| WO2024092558A1 (en) * | 2022-11-02 | 2024-05-10 | 北京小米移动软件有限公司 | Measurement methods, apparatuses, device, and storage medium |
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