CN111225388A - Carrier aggregation cell set optimization method and device - Google Patents
Carrier aggregation cell set optimization method and device Download PDFInfo
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- CN111225388A CN111225388A CN201811408436.9A CN201811408436A CN111225388A CN 111225388 A CN111225388 A CN 111225388A CN 201811408436 A CN201811408436 A CN 201811408436A CN 111225388 A CN111225388 A CN 111225388A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
Abstract
The invention provides a carrier aggregation cell set optimization method and device. The method comprises the following steps: determining the reference signal receiving power of each cell in the carrier aggregation cell set in a preset period; comparing each reference signal received power with a preset reference signal received power; determining the times that the reference signal received power of each cell in a preset period is smaller than the preset reference signal received power according to the comparison result; for each cell, determining the cell as a target cell under the condition that the corresponding times of the cell are greater than preset times; and optimizing the carrier aggregation cell set according to the target cell. The invention can automatically delete the carrier aggregation relation of the cells which do not meet the requirements, saves signaling overhead, reduces CPU load, reduces manual operation, saves manpower and material resources and improves configuration speed.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a carrier aggregation cell set optimization method and apparatus.
Background
A CA (Carrier Aggregation) system supports configurable cell sets participating in Carrier Aggregation, and in order to make planning of cells participating in Carrier Aggregation possible and reduce the overhead of blind measurement of a UE, a concept of an Aggregation cell set (i.e., a Carrier Aggregation relationship) is defined, that is, a cell that does not belong to the Aggregation cell set cannot be configured as a primary secondary Carrier to the UE even if it satisfies limitations such as a pilot power difference.
However, in the above configuration method, it is necessary to manually set other cells capable of participating in the cell aggregation for each cell through specific test software, and carrier aggregation can be performed after the cells are added to each other in a carrier aggregation relationship. Meanwhile, in the configuration process, it is also necessary to delete the cell carrier aggregation relationship from the carrier aggregation cell in a centralized manner manually, if a certain cell is in a state of poor signal for a long time, the cell needs to be deleted from the carrier aggregation relationship in time, and if the cell is not deleted in time, the cell in which the difference of Reference Signal Receiving Power (RSRP) in the carrier aggregation set cannot provide the main (auxiliary) carrier is always in a measured state, which wastes signaling resources and increases the load of a Central Processing Unit (CPU).
Disclosure of Invention
The invention provides a multi-channel radio frequency test system, which aims to solve the problems that in the prior art, a carrier aggregation cell set needs to be manually configured, manpower and material resources are wasted, and signaling resources are wasted and the load of a CPU is increased under the condition that the deletion of a cell which cannot provide a main (auxiliary) carrier is not timely.
In order to solve the above problem, an embodiment of the present invention discloses a carrier aggregation cell set optimization method, including: determining the reference signal receiving power of each cell in the carrier aggregation cell set in a preset period; comparing each reference signal received power with a preset reference signal received power; determining the times that the reference signal received power of each cell in a preset period is smaller than the preset reference signal received power according to the comparison result; for each cell, determining the cell as a target cell under the condition that the corresponding times of the cell are greater than preset times; and optimizing the carrier aggregation cell set according to the target cell.
Preferably, the step of determining the reference signal received power of each cell in the carrier aggregation cell set in a preset period includes: receiving a measurement report reported by each terminal in each cell in the preset period; and determining the reference signal received power of each cell in each period according to each measurement report.
Preferably, the step of performing optimization processing on the carrier aggregation cell set according to the target cell includes: and deleting the carrier aggregation relation between the target cell and the associated at least one secondary cell in the carrier aggregation cell set.
Preferably, after the step of comparing the reference signal received power with a preset reference signal received power, the method further comprises: and for each cell, under the condition that the number of times corresponding to the cell is less than or equal to the preset number of times, periodically measuring the reference signal receiving power of the cell.
In order to solve the above problem, an embodiment of the present invention further discloses a carrier aggregation cell set optimization apparatus, including: a power determining module, configured to determine a reference signal received power of each cell in the carrier aggregation cell set in a preset period; the power comparison module is used for comparing the received power of each reference signal with the received power of a preset reference signal; the frequency determining module is used for determining the frequency that the reference signal receiving power of each cell in a preset period is smaller than the preset reference signal receiving power according to the comparison result; a target cell determining module, configured to determine, for each cell, the cell as a target cell when a number of times corresponding to the cell is greater than a preset number of times; and the optimization processing module is used for optimizing the carrier aggregation cell set according to the target cell.
Preferably, the power determining module includes: a measurement report receiving submodule, configured to receive a measurement report reported by each terminal in each cell in the preset period; and the power determining submodule is used for determining the reference signal received power of each cell in each period according to each measurement report.
Preferably, the optimization processing module includes: and the optimization processing submodule is used for deleting the carrier aggregation relation between the target cell and the associated at least one secondary cell in the carrier aggregation cell set.
Preferably, the method further comprises the following steps: and the measuring module is used for carrying out periodic measurement on the reference signal receiving power of each cell under the condition that the number of times corresponding to the cell is less than or equal to the preset number of times.
Compared with the prior art, the invention has the following advantages:
the embodiment of the invention provides a carrier aggregation cell set optimization method and a carrier aggregation cell set optimization device. According to the embodiment of the invention, whether the carrier aggregation relation needs to be deleted is not manually judged, but whether the cell with low RSRP needs to be deleted is automatically judged through the preset node and algorithm, and the carrier aggregation relation of the cell which does not meet the requirement can be automatically deleted, so that the signaling overhead is saved, the CPU load is reduced, the manual operation is reduced, the manpower and material resources are saved, and the configuration speed is increased.
Drawings
Fig. 1 is a flowchart illustrating steps of a carrier aggregation cell set optimization method according to an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a carrier aggregation cell set optimization apparatus provided in an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
Referring to fig. 1, a flowchart illustrating steps of a carrier aggregation cell set optimization method provided in an embodiment of the present invention is shown, where the carrier aggregation cell set optimization method may be applied to a base station, and specifically may include the following steps:
step 101: and determining the reference signal receiving power of each cell in the carrier aggregation cell set in a preset period.
The embodiment of the invention can be applied to a base station for starting Carrier Aggregation (CA), such as an LTE (Long term evolution) base station for starting CA and the like.
When the cells belonging to the CA cell set satisfy the restrictions such as pilot power difference, they may be configured to the UE as primary and secondary carriers, and when the RSRP of a certain cell in the CA cell set is low or they cannot be configured to the UE as primary and secondary carriers, they need to be deleted.
The preset period is specified by a specified number of periods, for example, three periods or four periods, and the specific number of periods of the preset period is not limited in the embodiment of the present invention.
The base station may obtain, in real time, a measurement report periodically reported by each cell in the CA cell set, and an RSRP (Reference Signal Receiving Power) of each cell in the period is displayed in the measurement report reported by each cell.
In a preferred embodiment of the present invention, the step 101 may include:
substep S1: and receiving the measurement report reported by each terminal in each cell in the preset period.
Substep S2: and determining the reference signal received power of each cell in each period according to each measurement report.
In the embodiment of the present invention, the base station may receive measurement reports periodically reported by each terminal in each cell in the CA cell set, and may determine, through the measurement reports reported by each terminal at the preset cycle number, RSRP of the cell in each cycle corresponding to the preset cycle number, for example, the measurement report reported by cell a in the CA cell set may have measurement reports of 3 rd to 5 th cycles, and then may determine, through the three measurement reports, RSRP corresponding to cell a in each cycle of 3 rd to 5 th.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be construed as the only limitations of the present invention.
Also, in the above example, the preset period may be configured in advance, and the period is not fixed to the fourth period, but the number of periods is determined according to the number of received test data.
After determining the RSRP of each cell in the CA cell set within a preset period, step 102 is performed.
Step 102: comparing each reference signal received power with a preset reference signal received power.
In the embodiment of the present invention, the preset reference signal received power may be RSRP preset by a developer, and a specific reference signal received power may be determined according to an actual situation, which is not limited in the embodiment of the present invention.
After acquiring RSRPs of each cell in the CA cell set in a preset period, each RSRP may be compared with a preset RSRP, for example, the CA cell set includes cells a and B, RSRPs of the cell a in 1 st to 3 rd periods are 3, 4, and 5, RSRPs of the cell B in 1 st to 3 rd periods are 3, 6, and 7, and the preset RSRP is 4, and the comparison result indicates that the number of the cell a in 1 st to 3 rd periods is greater than the preset RSRP is 1, equal to the number of the preset RSRP is 1, and less than the number of the preset RSRP is 1; and the number of the cells B which are more than the preset RSRP is 2 and less than the preset RSRP is 1 in the 1 st to 3 rd periods.
It should be understood that the above examples are only examples for better understanding of technical solutions of the embodiments of the present invention by those skilled in the art, and are not to be taken as the only limitation of the embodiments of the present invention.
After comparing each reference signal received power with the preset reference signal received power, step 103 is performed.
Step 103: and determining the times that the reference signal received power of each cell in a preset period is smaller than the preset reference signal received power according to the comparison result.
After comparing each reference signal received power with the preset reference signal received power, the number of times that the reference signal received power of each cell in the CA cell set in the preset number of cycles is less than the preset reference signal received power may be determined, for example, the CA cell set includes cells a and B, RSRPs of the cell a in 1 st to 3 rd cycles are 3, 4, and 5, RSRPs of the cell B in 1 st to 3 rd cycles are 3, 6, and 7, and the preset RSRP is 4, and the comparison result is that the number of the cell a in 1 st to 3 rd cycles that is greater than the preset RSRP is 1, the number of the cell a that is equal to the preset RSRP is 1, and the number of the cell a that is less than the preset RSRP is 1; and the number of the cells B which are more than the preset RSRP is 2 and less than the preset RSRP is 1 in the 1 st to 3 rd periods.
It should be understood that the above examples are only examples for better understanding of technical solutions of the embodiments of the present invention by those skilled in the art, and are not to be taken as the only limitation of the embodiments of the present invention.
After determining the number of times that the reference signal received power of each cell in the preset period is less than the preset reference signal received power, step 104 is executed.
Step 104: and for each cell, determining the cell as a target cell under the condition that the corresponding times of the cell are greater than preset times.
In the embodiment of the present invention, the preset number may be a number preset by a developer, for example, the preset number is specifically determined according to the number of the preset cycles, and the preset number may be 3 times, 5 times, 8 times, and the like.
After determining the number of times that the reference signal received power of each cell in the preset period is smaller than the preset reference signal received power in step 103, the number of times that each cell corresponds to may be compared with the preset number of times, so as to determine each cell in the CA cell set, where the number of times that the reference signal received power of each preset period is smaller than the preset reference signal received power is larger than the preset number of times, for example, there is a cell A, B in the CA cell set, the preset period is 4 th to 7 th periods, the preset number of times is 2, the number of times that the RSRP of the cell a in the 4 th to 7 th periods is larger than the preset RSRP is 1, the number of times that the RSRP of the cell B in the 4 th to 7 th periods is larger than the preset RSRP is 3, and then it may be determined that the number of times that the cell B corresponds to the cell B in the CA cell set is larger than the preset number of times, and then the cell B is.
It should be understood that the above examples are only examples for better understanding of technical solutions of the embodiments of the present invention by those skilled in the art, and are not to be taken as the only limitation of the embodiments of the present invention.
Of course, the number of target cells in the CA cell set may be 0, or may be multiple, and specifically, the embodiment of the present invention is not limited thereto, based on the result of actual calculation.
In a preferred embodiment of the present invention, after the step 102, the method may further include:
step M1: and for each cell, under the condition that the number of times corresponding to the cell is less than or equal to the preset number of times, periodically measuring the reference signal receiving power of the cell.
In the embodiment of the present invention, for each cell in the CA cell set, when the number of times corresponding to the cell is less than or equal to the preset number of times, the cell is not optimized, and the process of periodically measuring the RSRP of the cell is continuously performed.
After determining the target cells in the CA cell set, step 105 is performed.
Step 105: and optimizing the carrier aggregation cell set according to the target cell.
After determining one or more target cells in the CA cell set, the CA cell set may be optimized according to the target cells, and specifically, the manner of optimizing the CA cell set is described in detail in the following preferred embodiments.
In a preferred embodiment of the present invention, the step 105 may include:
substep N1: and deleting the carrier aggregation relation between the target cell and the associated at least one secondary cell in the carrier aggregation cell set.
In the embodiment of the invention, one or more secondary cells having a carrier aggregation relation with a target cell exist in the CA cell set, and after the target cell in the CA cell set is determined, the carrier aggregation relation of at least one secondary cell associated with the target cell is deleted in the CA cell set, so that the optimization scheme of the CA cell set is completed.
The embodiment of the invention automatically judges whether the cell with low RSRP needs to be deleted or not through the preset node and algorithm, and can automatically delete the carrier aggregation relation of the cells which do not meet the requirement, thereby saving signaling overhead, and reducing CPU load
The carrier aggregation cell set optimization method provided by the embodiment of the invention determines the reference signal receiving power of each cell in the carrier aggregation cell set in a preset period, compares the reference signal receiving power with the preset reference signal receiving power, determines the frequency of the preset reference signal receiving power of the reference signal receiving power of each cell in the preset period according to the comparison result, and determines each cell as a target cell under the condition that the frequency corresponding to each cell is greater than the preset frequency, thereby optimizing the carrier aggregation cell set according to the target cell. According to the embodiment of the invention, whether the carrier aggregation relation needs to be deleted is not manually judged, but whether the cell with low RSRP needs to be deleted is automatically judged through the preset node and algorithm, and the carrier aggregation relation of the cell which does not meet the requirement can be automatically deleted, so that the signaling overhead is saved, the CPU load is reduced, the manual operation is reduced, the manpower and material resources are saved, and the configuration speed is increased.
Example two
Referring to fig. 2, a schematic structural diagram of a carrier aggregation cell set optimization apparatus provided in an embodiment of the present invention is shown, which may specifically include:
a power determining module 210, configured to determine reference signal received power of each cell in the carrier aggregation cell set in a preset period; a power comparison module 220, configured to compare each reference signal received power with a preset reference signal received power; a frequency determining module 230, configured to determine, according to the comparison result, the frequency that the reference signal received power of each cell in a preset period is smaller than the preset reference signal received power; a target cell determining module 240, configured to determine, for each cell, the cell as a target cell if the number of times corresponding to the cell is greater than a preset number of times; an optimization processing module 250, configured to perform optimization processing on the carrier aggregation cell set according to the target cell.
Preferably, the power determining module 210 includes: a measurement report receiving submodule, configured to receive a measurement report reported by each terminal in each cell in the preset period; and the power determining submodule is used for determining the reference signal received power of each cell in each period according to each measurement report.
Preferably, the optimization processing module 250 includes: and the optimization processing submodule is used for deleting the carrier aggregation relation between the target cell and the associated at least one secondary cell in the carrier aggregation cell set.
Preferably, the method further comprises the following steps: and the measuring module is used for carrying out periodic measurement on the reference signal receiving power of each cell under the condition that the number of times corresponding to the cell is less than or equal to the preset number of times.
The carrier aggregation cell set optimization device provided by the embodiment of the invention determines the reference signal receiving power of each cell in the carrier aggregation cell set in a preset period, compares the reference signal receiving power with the preset reference signal receiving power, determines the frequency of the preset reference signal receiving power of the reference signal receiving power of each cell in the preset period according to the comparison result, and determines each cell as a target cell under the condition that the frequency corresponding to each cell is greater than the preset frequency, thereby optimizing the carrier aggregation cell set according to the target cell. According to the embodiment of the invention, whether the carrier aggregation relation needs to be deleted is not manually judged, but whether the cell with low RSRP needs to be deleted is automatically judged through the preset node and algorithm, and the carrier aggregation relation of the cell which does not meet the requirement can be automatically deleted, so that the signaling overhead is saved, the CPU load is reduced, the manual operation is reduced, the manpower and material resources are saved, and the configuration speed is increased.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The carrier aggregation cell set optimization method and the carrier aggregation cell set optimization device provided by the invention are introduced in detail, and specific examples are applied in the text to explain the principle and the implementation mode of the invention, and the description of the above embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A carrier aggregation cell set optimization method is applied to a base station, and is characterized by comprising the following steps:
determining the reference signal receiving power of each cell in the carrier aggregation cell set in a preset period;
comparing each reference signal received power with a preset reference signal received power;
determining the times that the reference signal received power of each cell in a preset period is smaller than the preset reference signal received power according to the comparison result;
for each cell, determining the cell as a target cell under the condition that the corresponding times of the cell are greater than preset times;
and optimizing the carrier aggregation cell set according to the target cell.
2. The method of claim 1, wherein the step of determining the reference signal received power of each cell in the carrier aggregation cell set within a preset period comprises:
receiving a measurement report reported by each terminal in each cell in the preset period;
and determining the reference signal received power of each cell in each period according to each measurement report.
3. The method according to claim 1, wherein the step of performing optimization processing on the carrier aggregation cell set according to the target cell comprises:
and deleting the carrier aggregation relation between the target cell and the associated at least one secondary cell in the carrier aggregation cell set.
4. The method of claim 1, further comprising, after the step of comparing the reference signal received power to a preset reference signal received power:
and for each cell, under the condition that the number of times corresponding to the cell is less than or equal to the preset number of times, periodically measuring the reference signal receiving power of the cell.
5. A carrier aggregation cell set optimization device applied to a base station is characterized by comprising:
a power determining module, configured to determine a reference signal received power of each cell in the carrier aggregation cell set in a preset period;
the power comparison module is used for comparing the received power of each reference signal with the received power of a preset reference signal;
the frequency determining module is used for determining the frequency that the reference signal receiving power of each cell in a preset period is smaller than the preset reference signal receiving power according to the comparison result;
a target cell determining module, configured to determine, for each cell, the cell as a target cell when a number of times corresponding to the cell is greater than a preset number of times;
and the optimization processing module is used for optimizing the carrier aggregation cell set according to the target cell.
6. The apparatus of claim 5, wherein the power determination module comprises:
a measurement report receiving submodule, configured to receive a measurement report reported by each terminal in each cell in the preset period;
and the power determining submodule is used for determining the reference signal received power of each cell in each period according to each measurement report.
7. The apparatus of claim 5, wherein the optimization processing module comprises:
and the optimization processing submodule is used for deleting the carrier aggregation relation between the target cell and the associated at least one secondary cell in the carrier aggregation cell set.
8. The apparatus of claim 5, further comprising:
and the measuring module is used for carrying out periodic measurement on the reference signal receiving power of each cell under the condition that the number of times corresponding to the cell is less than or equal to the preset number of times.
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| WO2023010480A1 (en) * | 2021-08-05 | 2023-02-09 | Apple Inc. | Carrier specific scaling factor for deactivated pscell |
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