CN113891406B - Cell switching method and device in multi-frequency network - Google Patents
Cell switching method and device in multi-frequency network Download PDFInfo
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- 238000005259 measurement Methods 0.000 claims description 53
- 238000001228 spectrum Methods 0.000 claims description 22
- 238000004590 computer program Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 claims description 7
- 238000005457 optimization Methods 0.000 abstract description 10
- 239000000969 carrier Substances 0.000 abstract description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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
- H04W36/00835—Determination of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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
- H04W36/0085—Hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The embodiment of the invention provides a cell switching method and device in a multi-frequency network. The method comprises the following steps: if the load of the service cell is judged to reach a preset business load threshold, determining candidate user equipment and candidate different-frequency neighbor cells; for each candidate user equipment and each candidate inter-frequency neighbor cell, obtaining a performance improvement estimation result of the tangential candidate inter-frequency neighbor cell of the candidate user equipment; and if the estimated result of the performance improvement is judged to meet the preset condition, the candidate user equipment is tangential to the candidate inter-frequency neighbor cell. According to the cell switching method and device in the multi-frequency network, the candidate user equipment and the candidate inter-frequency neighbor cells are determined, when the performance improvement estimated result of the candidate user equipment tangential candidate inter-frequency neighbor cells meets the preset condition, the candidate user equipment tangential candidate inter-frequency neighbor cells can be selected, optimal carrier selection of the multi-frequency network can be achieved, carriers with better experience can be selected for users with large data transmission requirements quickly, and carrier optimization can be achieved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for cell handover in a multi-frequency network.
Background
A multi-frequency network (MFN) is a network that uses multiple wireless radio frequency channels to transmit media content. Wireless communication networks have to make trade-offs between personalized services provided for a single terminal and numerous services provided for a large number of terminals. For example, the distribution of multimedia content to a large number of resource-constrained portable devices (users) is a complex problem. It is therefore important for network operators, content retailers and service providers to have a way to distribute content and/or other network services quickly and efficiently, and in this way to increase bandwidth utilization and power efficiency.
During operation of the multi-frequency network, the receiving device may perform a radio frequency channel switch upon request of a user or upon request of an application to obtain content on another radio frequency channel. The device may also perform radio frequency channel switching if the content acquisition fails, e.g. due to mobility of the device or diversification of channel conditions. Typically, the device can switch to any radio frequency channel with a content stream available. When content acquisition fails due to device mobility, coverage areas of two or more facilities may overlap, and thus, multiple radio frequency channels carrying the desired content may be available. These available radio frequency channels belong to different facilities, each of which may include a number of additional content transmitted on other radio frequency channels. If a device randomly selects one of the available channels, the selected facility may not carry the most additional content, resulting in less efficient handoff, less bandwidth utilization, and unreasonable carrier allocation.
Therefore, how to make a device select an ideal carrier, so that the device can quickly and effectively obtain additional content is a challenge to be solved.
Disclosure of Invention
The embodiment of the invention provides a cell switching method and device in a multi-frequency network, which are used for solving or at least partially solving the defect of unreasonable carrier allocation in the prior art.
In a first aspect, an embodiment of the present invention provides a cell handover method in a multi-frequency network, including:
if the load of the service cell is judged to reach a preset business load threshold, determining candidate user equipment and candidate different-frequency neighbor cells;
for each candidate user equipment and each candidate inter-frequency neighbor cell, obtaining a performance improvement estimation result of tangential the candidate user equipment to the candidate inter-frequency neighbor cell;
and if the performance improvement estimation result is judged to meet the preset condition, the candidate user equipment is tangential to the candidate inter-frequency neighbor cell.
Preferably, the specific step of determining candidate user equipment comprises:
and according to the preset period, determining each user equipment meeting the preset condition as the candidate user equipment.
Preferably, the specific step of determining the candidate inter-frequency neighbor cell includes:
and determining a candidate inter-frequency neighbor set according to whether overlapping coverage neighbor exists in the inter-frequency neighbor of the service cell.
Preferably, the specific step of obtaining the performance improvement estimation result of the candidate ue tangential to the candidate inter-frequency neighbor cell includes:
transmitting an inter-frequency measurement instruction to the candidate user equipment, and acquiring inter-frequency measurement information reported by the candidate user equipment for inter-frequency measurement of the candidate inter-frequency neighbor cell according to the inter-frequency measurement instruction;
and acquiring a performance improvement estimated result of tangential direction of the candidate user equipment to the candidate inter-frequency neighbor cell according to the inter-frequency measurement information.
Preferably, the specific step of obtaining the performance improvement estimation result of the candidate ue tangential to the candidate inter-frequency neighbor cell according to the inter-frequency measurement information includes:
according to the inter-frequency measurement information, acquiring the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate inter-frequency neighbor cell;
and acquiring the relative lifting amplitude of the frequency spectrum efficiency of the candidate user equipment tangential to the candidate inter-frequency neighbor cell according to the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate inter-frequency neighbor cell.
Preferably, the specific step of obtaining the performance improvement estimation result of the candidate ue tangential to the candidate inter-frequency neighbor cell according to the inter-frequency measurement information further includes:
and acquiring the lifting amplitude of the average experience rate of the users of the candidate inter-frequency neighbor cells after switching according to the frequency spectrum efficiency, the number of data transmission users and the data volume of the data transmission users of the candidate user equipment in the service cell and the candidate inter-frequency neighbor cells.
Preferably, if it is determined that the load of the serving cell reaches a preset service load threshold, determining the candidate ue and the candidate inter-frequency neighbor cell further includes:
and judging whether the service data transmission duration in the service cell reaches the service load threshold or not according to the preset period.
In a second aspect, an embodiment of the present invention provides a cell handover apparatus in a multi-frequency network, including:
the determining module is used for determining candidate user equipment and candidate different-frequency neighbor cells if judging that the load of the service cell reaches a preset service load threshold;
the evaluation module is used for acquiring a performance improvement estimated result of tangential of the candidate user equipment to the candidate inter-frequency neighbor cells for each candidate user equipment and each candidate inter-frequency neighbor cell;
and the switching module is used for tangential the candidate user equipment to the candidate inter-frequency neighbor cell if the performance improvement estimated result is judged to meet the preset condition.
In a third aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, the program when executed implementing the steps of a cell handover method in a multi-frequency network as provided by any one of the various possible implementations of the first aspect.
In a fourth aspect, embodiments of the present invention provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of a cell handover method in a multi-frequency network as provided by any of the various possible implementations of the first aspect.
According to the cell switching method and device in the multi-frequency network, the candidate user equipment and the candidate inter-frequency neighbor cells are determined, when the performance improvement estimated result of the candidate user equipment tangential candidate inter-frequency neighbor cells meets the preset condition, the candidate user equipment tangential candidate inter-frequency neighbor cells can be selected, optimal carrier selection of the multi-frequency network can be achieved, carriers with better experience can be selected for users with large data transmission requirements quickly, and carrier optimization can be achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a cell handover method in a multi-frequency network according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a cell switching device in a multi-frequency network according to an embodiment of the present invention;
fig. 3 is a schematic entity structure of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to overcome the above problems in the prior art, the embodiment of the present invention provides a cell switching method and apparatus in a Multi-Frequency network, which is based on the concept that, for MBB (Mobile broadband) scenarios (downlink 3 carriers and above carrier aggregation scenarios or FDD (Frequency division duplex, frequency Division Duplexing) +tdd (time division duplex, time DivisionDuplexing) scenarios), the method and apparatus have the characteristics of large bursty data traffic and fast load change, perform Multi-Frequency network optimal carrier selection (Multi-band Optimal Carrier Selection, mbos), more quickly select carriers with better experience for users with large data transmission requirements, perform cell switching, rather than simply provide RF (Radio Frequency) carrier Frequency (channel) switching, so that user equipment can switch to the carrier with the most additional content more quickly, improve switching efficiency, improve bandwidth utilization and power efficiency, and be applicable to a wide range of scenarios.
Fig. 1 is a flow chart of a cell handover method in a multi-frequency network according to an embodiment of the present invention. As shown in fig. 1, the method includes: and step S101, if judging that the load of the service cell reaches a preset service load threshold, determining candidate user equipment and candidate different-frequency neighbor cells.
It should be noted that, the execution body of the cell handover method provided by the embodiment of the present invention may be a node (eNodeB).
The eNodeB evaluates the load of the service cell and judges that the load reaches a preset business load threshold. If so, indicating that cell switching is needed, determining candidate User Equipment (UE) and candidate inter-frequency neighbor cells.
Serving cell refers to the serving cell of a normal UE or the PCell of a CA (Carrier Aggregation ) UE.
Candidate UEs, which are UEs that may need to perform cell handover. The number of candidate UEs may be one or more according to the actual situation.
The candidate inter-frequency neighbor cell is a possibly tangential inter-frequency neighbor cell. According to the actual situation, the number of the candidate inter-frequency neighbor cells can be one or more.
Step S102, for each candidate user equipment and each candidate inter-frequency neighbor cell, obtaining a performance improvement estimation result of the tangential candidate inter-frequency neighbor cell of the candidate user equipment.
Specifically, a candidate UE and a candidate inter-frequency neighbor cell are used as a combination, and the performance improvement amplitude after the carrier frequency channel of the candidate UE is switched from the serving cell to the candidate inter-frequency neighbor cell is evaluated as a performance improvement estimation result.
The performance enhancement may include performance enhancement of the UE and performance enhancement of the candidate inter-frequency neighbor cell.
For UEs, the performance improvement may be an improvement in spectral efficiency.
For candidate inter-frequency neighbors, the performance improvement may be an improvement in the aggregate rate.
And step S103, if the estimated result of the performance improvement is judged to meet the preset condition, the candidate user equipment is tangential to the candidate inter-frequency neighbor cell.
Specifically, whether the performance improvement estimated result meets a preset condition is judged, if yes, the performance can be obviously improved, and the candidate user equipment can be switched from the service cell to the candidate inter-frequency neighbor cell.
The preset condition may be that a preset amplitude threshold is reached.
It can be appreciated that, for a combination of one candidate UE and one candidate inter-frequency neighbor cell, both the performance enhancement of the UE and the performance enhancement of the candidate inter-frequency neighbor cell are required to meet preset conditions.
It may be understood that, for a certain candidate UE, if there are multiple candidate different-frequency neighboring cells, the performance improvement estimation result can meet a preset condition, and then the candidate UE may be tangential to any one of the multiple candidate different-frequency neighboring cells.
According to the embodiment of the invention, the candidate user equipment and the candidate different-frequency neighbor cell are determined, when the performance improvement estimated result of the candidate user equipment tangential candidate different-frequency neighbor cell meets the preset condition, the candidate user equipment tangential candidate different-frequency neighbor cell can be used for realizing multi-frequency network optimal carrier selection, and the carrier with better experience can be quickly selected for users with large data transmission requirements, so that carrier optimization can be realized.
Based on the content of the above embodiments, the specific steps of determining candidate user equipment include: and according to the preset period, determining each user equipment meeting the preset condition as a candidate user equipment.
It should be noted that, the eNodeB may periodically evaluate the load of the serving cell according to a preset period. The preset period is a monitoring period.
And if the load of the serving cell in the monitoring period reaches a preset service load threshold, determining the UE which simultaneously meets the following conditions as candidate user equipment:
1. a UE for a non-emergency call;
2. UEs not performing eMBMS (EvolvedMultimedia Broadcast MulticastService), evolving multimedia broadcast multicast service;
3. only the UE with QCI 5-9 bearing exists;
4. the UE is not in the protection period of the load balancing switch-in protection timer;
5. UE with downlink data volume larger than the pilot frequency measurement traffic volume threshold in the monitoring period;
6. UE with the estimated data transmission time occupying district accumulated data transmission time occupying ratio smaller than or equal to the pilot frequency measurement load proportion threshold in the monitoring period;
7. a UE using an average MCS (Modulation and Coding Scheme, modulation and coding strategy) order below the inter-frequency measurement MCS threshold;
8. and screening CA UE which enters an uplink carrier aggregation state through intelligently selecting an uplink carrier aggregation combination function.
The embodiment of the invention can avoid random switching of the radio frequency channels of the user equipment by determining the candidate user equipment, thereby realizing carrier optimization.
Based on the content of the above embodiments, the specific steps of determining the candidate inter-frequency neighbor cell include: and determining a candidate inter-frequency neighbor set according to whether the overlapping coverage neighbor exists in the inter-frequency neighbor of the serving cell.
Specifically, first, it is determined whether there is an overlapping coverage neighbor in the different-frequency neighbor of the serving cell.
If overlapping coverage neighbor cells exist in the inter-frequency neighbor cells, the candidate inter-frequency neighbor cells need to meet one of the following conditions:
1. overlapping and covering adjacent cells by the same station;
2. the alien overlapping coverage neighbor of the X2 link is configured.
If the overlapping coverage neighbor does not exist in the inter-frequency neighbor, the candidate inter-frequency neighbor is determined according to the inter-frequency load balancing neighbor range. The candidate inter-frequency neighbor cell needs to satisfy one of the following conditions:
1. if the same-station different-frequency neighbor cell exists, the same-station different-frequency neighbor cell is only selected as the candidate different-frequency neighbor cell. Otherwise, selecting the different-station different-frequency neighbor cell configured with the X2 link as a candidate different-frequency neighbor cell;
2. and selecting the co-station different-frequency neighbor cell and the different-station different-frequency neighbor cell configured with the X2 link as candidate different-frequency neighbor cells.
In addition, the eNodeB screens out cells from the candidate inter-frequency neighbor set, which cannot be used as candidate inter-frequency neighbors as follows:
1. a set blacklist cell;
2. cells with the same working frequency and the same PCI in the neighbor cell list;
3. a cell in an energy-saving state (energy-saving state refers to intelligent turn-off with a coverage carrier, and UMTS (universal mobile telecommunications system, universal Mobile Telecommunications System) intelligent turn-off with a coverage carrier, low power consumption);
4. no load interaction information with the current serving cell or a load higher than the current serving cell.
The embodiment of the invention can avoid random switching of the radio frequency channel of the user equipment by determining the candidate inter-frequency neighbor cell, thereby realizing carrier optimization.
Based on the content of each embodiment, the specific steps of obtaining the performance improvement estimation result of the candidate ue tangential candidate inter-frequency neighbor cell include: and sending an inter-frequency measurement instruction to the candidate user equipment, and obtaining inter-frequency measurement information which is reported by the candidate user equipment and is used for inter-frequency measurement of the candidate inter-frequency neighbor cell according to the inter-frequency measurement instruction.
Specifically, after determining the candidate UEs, the eNodeB may trigger the candidate UEs to perform inter-frequency measurement on each candidate inter-frequency neighbor cell by issuing an inter-frequency measurement instruction to each candidate UE.
For a normal UE, inter-frequency measurement employs A4 measurement.
For CA UE, frequency point measurement of SCC (secondary component carrier ) is measured with A5, and the rest of inter-frequency point measurement is measured with A4.
After the candidate UE performs inter-frequency measurement, the acquired inter-frequency measurement information is reported to the eNodeB.
And acquiring a performance improvement estimated result of the tangential candidate inter-frequency neighbor cell of the candidate user equipment according to the inter-frequency measurement information.
Specifically, since the inter-frequency measurement of the UE needs to play GAPs, the data transmission performance of the UE is affected, and after the UE reports the inter-frequency measurement information, the eNodeB may stop the inter-frequency measurement. At this point the UE's A3 on-channel measurements are still ongoing and reported to the eNodeB periodically (which may be set by itself). And the eNodeB judges whether the same-frequency RSRP fluctuation of the user exceeds a certain range according to the RSRP (ReferenceSignal Receiving Power, reference signal received power) measured by the same-frequency cell and reported by the UE. If the result exceeds the threshold value, deleting the inter-frequency measurement result of the UE, and re-triggering the UE to perform inter-frequency measurement. When the UE is not selected as a candidate UE for 4 seconds, the A3 co-channel measurement will be deleted.
According to the pilot frequency measurement information, the performance improvement amplitude of the candidate UE after the carrier frequency channel of the candidate UE is switched from the serving cell to the candidate pilot frequency neighbor cell can be evaluated and used as a performance improvement estimated result.
According to the embodiment of the invention, the UE is triggered to carry out the inter-frequency measurement, and the performance improvement estimated result of the candidate user equipment tangential candidate inter-frequency neighbor cell is obtained according to the inter-frequency measurement information obtained by carrying out the inter-frequency measurement, so that cell switching can be carried out according to the performance improvement estimated result, and carrier optimization can be realized.
Based on the above-mentioned embodiments, the specific steps of obtaining the performance improvement estimation result of the tangential candidate inter-frequency neighbor of the candidate ue according to the inter-frequency measurement information include: and acquiring the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate inter-frequency neighbor cell according to the inter-frequency measurement information.
Specifically, for a common UE, the eNodeB may estimate UE spectrum efficiency of the UE in the serving cell and the inter-frequency neighbor cell measured by the UE according to RSRP measurement information, bandwidth, and multi-antenna configuration.
For CA UEs, the eNodeB will estimate the spectral efficiency of the original CA combination and the target CA combination, respectively. The spectral efficiency of the CA combination may integrate the spectral efficiency calculations of multiple cells in the CA combination of the UE.
And acquiring the relative lifting amplitude of the frequency spectrum efficiency of the candidate user equipment tangential candidate inter-frequency neighbor cell according to the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate inter-frequency neighbor cell.
Specifically, the eNodeB may obtain, according to the spectrum efficiency of the candidate UE in the serving cell and the candidate inter-frequency neighbor cell, a relative increase in spectrum efficiency of the UE switching from the current cell to the target inter-frequency neighbor cell.
According to the embodiment of the invention, the frequency spectrum efficiency of the candidate user equipment tangential candidate inter-frequency neighbor cell is obtained according to the inter-frequency measurement information, so that cell switching can be performed according to the frequency spectrum efficiency relative increasing amplitude, and carrier optimization can be realized.
Based on the foregoing embodiments, the specific step of obtaining the performance improvement estimation result of the tangential candidate inter-frequency neighbor cell of the candidate ue according to the inter-frequency measurement information further includes: and acquiring the lifting amplitude of the average experience rate of the users of the candidate inter-frequency neighbor cells after switching according to the frequency spectrum efficiency, the number of the data transmission users and the data quantity of the data transmission users of the candidate user equipment in the service cell and the candidate inter-frequency neighbor cells.
It should be noted that, the embodiment of the present invention is suitable for obtaining the increasing amplitude of the average experience rate of the users in the inter-frequency neighbor cell in the station.
Specifically, for the candidate inter-frequency neighbor cell, the eNodeB estimates the average experience rate of the user of the inter-frequency neighbor cell in the pre-handover station according to the spectrum efficiency, the number of data transmission users, and the data amount of the data transmission users, and then estimates the average experience rate of the user of the cell after the UE is handed over to the inter-frequency neighbor cell in the station.
The user average experience rate of the candidate inter-frequency neighbor cells after switching can be obtained by comparing the user average experience rates of the cells before and after switching.
It should be noted that, the actual user experience rate is not possible to accurately calculate and obtain, so the embodiment of the present invention estimates the relative measure of the inter-cell performance difference.
According to the embodiment of the invention, the cell switching can be performed according to the increasing amplitude of the average experience rate of the user of the switched candidate inter-frequency neighbor cell by taking the increasing amplitude of the average experience rate of the user, and carrier optimization can be realized.
Based on the foregoing embodiments, if it is determined that the load of the serving cell reaches the preset traffic load threshold, determining the candidate ue and the candidate different-frequency neighbor cell further includes: and judging whether the service data transmission time length in the service cell reaches a service load threshold or not according to a preset period.
Specifically, the eNodeB may periodically evaluate the load of the serving cell according to a preset period.
The specific indicator for evaluating the load may be a traffic data transmission duration.
It should be noted that, the period and the traffic load threshold may be set according to practical situations, and the embodiment of the present invention is not limited specifically for specific numerical values.
The embodiment of the invention determines whether the cell switching is carried out or not by judging whether the service data transmission time length in the service cell reaches the service load threshold or not, thereby realizing carrier optimization through the cell switching.
Fig. 2 is a schematic structural diagram of a cell switching device in a multi-frequency network according to an embodiment of the present invention. Based on the content of the above embodiments, as shown in fig. 2, the apparatus includes a determining module 201, an evaluating module 202, and a switching module 203, where:
a determining module 201, configured to determine a candidate ue and a candidate different-frequency neighboring cell if it is determined that the load of the serving cell reaches a preset service load threshold;
the evaluation module 202 is configured to obtain, for each candidate ue and each candidate inter-frequency neighbor cell, a performance improvement estimation result of the candidate ue tangential candidate inter-frequency neighbor cell;
and the switching module 203 is configured to, if it is determined that the performance improvement estimation result meets the preset condition, tangential candidate inter-frequency neighbor cells of the candidate ue.
Specifically, the determining module 201, the evaluating module 202 and the switching module 203 are electrically connected in sequence.
The determining module 201 evaluates the load of the serving cell and determines that the load reaches a preset traffic load threshold. If so, determining candidate UE and candidate inter-frequency neighbor cells first according to the specification that the cell switching is required.
The evaluation module 202 uses a candidate UE and a candidate inter-frequency neighbor cell as a combination, and evaluates the performance improvement amplitude after the carrier frequency channel of the candidate UE is switched from the serving cell to the candidate inter-frequency neighbor cell, as a performance improvement estimation result.
The switching module 203 determines whether the performance improvement estimation result meets a preset condition, and if so, indicates that the performance can be obviously improved, and can switch the candidate ue from the serving cell to the candidate inter-frequency neighbor cell.
The embodiment of the present invention provides a cell switching device in a multi-frequency network, which is configured to execute the cell switching method in the multi-frequency network provided by the embodiment of the present invention, where a specific method and a flow for implementing corresponding functions by each module included in the cell switching device in the multi-frequency network are detailed in the embodiment of the cell switching method in the multi-frequency network, and are not described herein again.
The cell switching device in the multi-frequency network is used for the cell switching method in the multi-frequency network of the foregoing embodiments. Therefore, the description and definition in the cell handover method in the multi-frequency network in the foregoing embodiments may be used for understanding the execution modules in the embodiments of the present invention.
According to the embodiment of the invention, the candidate user equipment and the candidate different-frequency neighbor cell are determined, when the performance improvement estimated result of the candidate user equipment tangential candidate different-frequency neighbor cell meets the preset condition, the candidate user equipment tangential candidate different-frequency neighbor cell can be used for realizing multi-frequency network optimal carrier selection, and the carrier with better experience can be quickly selected for users with large data transmission requirements, so that carrier optimization can be realized.
Fig. 3 is a schematic entity structure of an electronic device according to an embodiment of the present invention. Based on the content of the above embodiment, as shown in fig. 3, the electronic device may include: a processor (processor) 301, a memory (memory) 302, and a bus 303; wherein the processor 301 and the memory 302 perform communication with each other through the bus 303; the processor 301 is configured to invoke computer program instructions stored in the memory 302 and executable on the processor 301 to perform the cell handover method in the multi-frequency network provided by the above method embodiments, for example, including: if the load of the service cell is judged to reach a preset business load threshold, determining candidate user equipment and candidate different-frequency neighbor cells; for each candidate user equipment and each candidate inter-frequency neighbor cell, obtaining a performance improvement estimation result of the tangential candidate inter-frequency neighbor cell of the candidate user equipment; and if the estimated result of the performance improvement is judged to meet the preset condition, the candidate user equipment is tangential to the candidate inter-frequency neighbor cell.
Another embodiment of the present invention discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, are capable of performing a cell handover method in a multi-frequency network provided by the above method embodiments, for example comprising: if the load of the service cell is judged to reach a preset business load threshold, determining candidate user equipment and candidate different-frequency neighbor cells; for each candidate user equipment and each candidate inter-frequency neighbor cell, obtaining a performance improvement estimation result of the tangential candidate inter-frequency neighbor cell of the candidate user equipment; and if the estimated result of the performance improvement is judged to meet the preset condition, the candidate user equipment is tangential to the candidate inter-frequency neighbor cell.
Further, the logic instructions in memory 302 described above may be implemented in the form of software functional units and stored in a computer readable storage medium when sold or used as a stand alone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in essence or a part contributing to the prior art or a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of 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, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Another embodiment of the present invention provides a non-transitory computer readable storage medium storing computer instructions for causing a computer to perform a cell handover method in a multi-frequency network provided by the above method embodiments, for example, including: if the load of the service cell is judged to reach a preset business load threshold, determining candidate user equipment and candidate different-frequency neighbor cells; for each candidate user equipment and each candidate inter-frequency neighbor cell, obtaining a performance improvement estimation result of the tangential candidate inter-frequency neighbor cell of the candidate user equipment; and if the estimated result of the performance improvement is judged to meet the preset condition, the candidate user equipment is tangential to the candidate inter-frequency neighbor cell.
The apparatus embodiments described above are merely illustrative, wherein elements illustrated as separate elements may or may not be physically separate, and elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. It is to be understood that the foregoing aspects, in essence, or portions thereof, may be embodied in the form of a software product that may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the various embodiments, or methods of portions of the embodiments, described above.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for cell handover in a multi-frequency network, comprising:
if the load of the service cell is judged to reach a preset business load threshold, determining candidate user equipment and candidate different-frequency neighbor cells;
for each candidate user equipment and each candidate inter-frequency neighbor cell, obtaining a performance improvement estimation result of tangential the candidate user equipment to the candidate inter-frequency neighbor cell;
if the performance improvement estimated result is judged to meet the preset condition, the candidate user equipment is tangential to the candidate inter-frequency neighbor cell;
the specific step of obtaining the performance improvement estimation result of the candidate user equipment tangential to the candidate inter-frequency neighbor cell comprises the following steps:
transmitting an inter-frequency measurement instruction to the candidate user equipment, and acquiring inter-frequency measurement information reported by the candidate user equipment for inter-frequency measurement of the candidate inter-frequency neighbor cell according to the inter-frequency measurement instruction;
acquiring a performance improvement estimation result of the candidate user equipment tangential to the candidate inter-frequency neighbor cell according to the inter-frequency measurement information; the performance improvement comprises the performance improvement of the candidate user equipment and the performance improvement of the candidate inter-frequency neighbor cell;
the specific step of obtaining the performance improvement estimation result of the candidate ue tangential to the candidate inter-frequency neighbor cell according to the inter-frequency measurement information further includes:
acquiring the lifting amplitude of the average experience rate of the users of the candidate inter-frequency neighbor cells after switching according to the frequency spectrum efficiency, the number of data transmission users and the data volume of the data transmission users of the candidate user equipment in the service cell and the candidate inter-frequency neighbor cells;
the step of acquiring the lifting amplitude of the average experience rate of the users in the candidate inter-frequency neighbor cell after the switching according to the frequency spectrum efficiency, the number of data transmission users and the data quantity of the data transmission users of the candidate user equipment in the service cell and the candidate inter-frequency neighbor cell, wherein the step of acquiring the lifting amplitude comprises the following steps of;
for the candidate inter-frequency neighbor cell, estimating the average user experience rate of the inter-frequency neighbor cell in the pre-switching station according to the frequency spectrum efficiency, the number of data transmission users and the data quantity of the data transmission users, and estimating the average user experience rate of the service cell after the candidate user equipment is switched to the inter-frequency neighbor cell in the station;
and comparing the average experience rates of the users of the service cells before and after the switching, and obtaining the improvement amplitude of the average experience rate of the users of the candidate inter-frequency neighbor cells after the switching.
2. The method for cell handover in a multi-frequency network according to claim 1, wherein the specific step of determining candidate user equipments comprises:
and according to the preset period, determining each user equipment meeting the preset condition as the candidate user equipment.
3. The method for cell handover in a multi-frequency network according to claim 1, wherein the specific step of determining candidate inter-frequency neighbors comprises:
and determining a candidate inter-frequency neighbor set according to whether overlapping coverage neighbor exists in the inter-frequency neighbor of the service cell.
4. The method for cell handover in a multi-frequency network according to claim 1, wherein the specific step of obtaining the performance improvement estimation result of the candidate ue tangential to the candidate inter-frequency neighbor cell according to the inter-frequency measurement information includes:
according to the inter-frequency measurement information, acquiring the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate inter-frequency neighbor cell;
and acquiring the relative lifting amplitude of the frequency spectrum efficiency of the candidate user equipment tangential to the candidate inter-frequency neighbor cell according to the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate inter-frequency neighbor cell.
5. The method for cell handover in a multi-frequency network according to any one of claims 2 to 4, wherein determining the candidate ue and the candidate inter-frequency neighbor cell if it is determined that the load of the serving cell reaches the preset traffic load threshold further comprises:
and judging whether the service data transmission duration in the service cell reaches the service load threshold or not according to the preset period.
6. A cell switching apparatus in a multi-frequency network, comprising:
the determining module is used for determining candidate user equipment and candidate different-frequency neighbor cells if judging that the load of the service cell reaches a preset service load threshold;
the evaluation module is used for acquiring a performance improvement estimated result of tangential of the candidate user equipment to the candidate inter-frequency neighbor cells for each candidate user equipment and each candidate inter-frequency neighbor cell;
the switching module is used for tangential the candidate user equipment to the candidate inter-frequency neighbor cell if judging that the performance improvement estimated result meets a preset condition;
the evaluation module is specifically configured to send an inter-frequency measurement instruction to the candidate ue, and obtain inter-frequency measurement information reported by the candidate ue and used for performing inter-frequency measurement on the candidate inter-frequency neighbor cell according to the inter-frequency measurement instruction; acquiring a performance improvement estimation result of the candidate user equipment tangential to the candidate inter-frequency neighbor cell according to the inter-frequency measurement information; the performance improvement comprises the performance improvement of the candidate user equipment and the performance improvement of the candidate inter-frequency neighbor cell;
the evaluation module is specifically further configured to obtain an increase amplitude of a user average experience rate of the candidate inter-frequency neighbor cell after the handover according to the spectrum efficiency, the number of data transmission users, and the data volume of the data transmission users of the candidate user equipment in the serving cell and the candidate inter-frequency neighbor cell;
the evaluation module is specifically configured to estimate, for the candidate inter-frequency neighbor cell, a user average experience rate of the inter-frequency neighbor cell before switching according to spectrum efficiency, the number of data transmission users, and the data amount of the data transmission users, and estimate a user average experience rate of the serving cell after the candidate user equipment is switched to the inter-frequency neighbor cell in the station; and comparing the average experience rates of the users of the service cells before and after the switching, and obtaining the improvement amplitude of the average experience rate of the users of the candidate inter-frequency neighbor cells after the switching.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the cell handover method in a multi-frequency network according to any of claims 1 to 5 when the program is executed.
8. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of a cell handover method in a multi-frequency network according to any of claims 1 to 5.
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