CN113891406A - 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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- H—ELECTRICITY
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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
- H04W36/00835—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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- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
Abstract
The embodiment of the invention provides a cell switching method and a cell switching device in a multi-frequency network. The method comprises the following steps: if the load of the service cell reaches a preset service load threshold, determining candidate user equipment and candidate pilot frequency adjacent cells; for each candidate user equipment and each candidate pilot frequency adjacent cell, acquiring a performance improvement estimation result of the candidate user equipment to the candidate pilot frequency adjacent cell; and if the performance improvement estimation result is judged to meet the preset condition, the candidate user equipment is tangent to the candidate pilot frequency adjacent cell. According to the cell switching method and device in the multi-frequency network, provided by the embodiment of the invention, the candidate user equipment and the candidate pilot frequency adjacent cell are determined, when the performance improvement estimation result of the candidate user equipment tangential candidate pilot frequency adjacent cell meets the preset condition, the candidate user equipment tangential candidate pilot frequency adjacent cell can realize the optimal carrier selection of the multi-frequency network, the carrier with better experience can be quickly selected for the user with large data transmission demand, and the carrier optimization can be realized.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a cell switching method and apparatus 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 must make a trade-off between personalized services provided for a single terminal and the multitude of 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 quickly and efficiently distribute content and/or other network services and in this way improve bandwidth utilization and power efficiency.
During operation of the multi-frequency network, the receiving device may perform a radio frequency channel switch upon a user request or upon an application request to obtain content on another radio frequency channel. The device may also perform radio frequency channel switching if content acquisition fails, for example due to mobility of the device or diversification of channel conditions. In general, the device may switch to any radio frequency channel having an available content stream. When content acquisition fails due to device mobility, the coverage areas of two or more facilities may overlap, and thus, multiple radio channels carrying the desired content may be available. These available radio frequency channels belong to different facilities, each of which may include many additional contents transmitted on other radio frequency channels. If the device randomly selects one of the available channels, the selected facility may not carry the most additional content, resulting in inefficient handoff, lower bandwidth utilization, and unreasonable carrier allocation.
Therefore, how to enable the device to select an ideal carrier is an urgent issue to be solved, so that the device can quickly and effectively acquire additional content.
Disclosure of Invention
Embodiments of the present invention provide a cell switching method and apparatus in a multi-frequency network, so as to solve or at least partially solve a 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 reaches a preset service load threshold, determining candidate user equipment and candidate pilot frequency adjacent cells;
for each candidate user equipment and each candidate pilot frequency neighboring cell, acquiring a performance improvement estimation result of the candidate user equipment tangential to the candidate pilot frequency neighboring cell;
and if the performance improvement estimation result meets the preset condition, the candidate user equipment is tangent to the candidate pilot frequency adjacent cell.
Preferably, the specific step of determining the candidate user equipment includes:
and according to the preset period, determining each user equipment meeting the preset conditions as the candidate user equipment.
Preferably, the specific step of determining the candidate inter-frequency neighboring cell includes:
and determining a candidate pilot frequency neighboring cell set according to whether an overlapped covering neighboring cell exists in the pilot frequency neighboring cells of the service cell.
Preferably, the specific step of obtaining the performance improvement estimation result of the candidate user equipment tangential to the candidate pilot frequency neighboring cell includes:
sending a pilot frequency measurement instruction to the candidate user equipment to obtain pilot frequency measurement information reported by the candidate user equipment, wherein the pilot frequency measurement information is used for performing pilot frequency measurement on the candidate pilot frequency neighboring cell according to the pilot frequency measurement instruction;
and acquiring a performance improvement estimation result of the candidate user equipment to the candidate pilot frequency adjacent cell according to the pilot frequency measurement information.
Preferably, the specific step of obtaining a performance improvement estimation result of the candidate user equipment to the candidate pilot frequency neighboring cell according to the pilot frequency measurement information includes:
acquiring the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate pilot frequency adjacent cell according to the pilot frequency measurement information;
and obtaining the relative promotion amplitude of the frequency spectrum efficiency of the candidate user equipment to the candidate pilot frequency adjacent cell according to the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate pilot frequency adjacent cell.
Preferably, the specific step of obtaining a performance improvement estimation result of the candidate user equipment cutting toward the candidate pilot frequency neighboring cell according to the pilot frequency measurement information further includes:
and acquiring the promotion amplitude of the average user experience rate of the candidate pilot frequency adjacent cell after switching 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 service cell and the candidate pilot frequency adjacent cell.
Preferably, if it is determined that the load of the serving cell reaches the preset service load threshold, before determining the candidate user equipment and the candidate pilot frequency neighboring cell, the method further includes:
and judging whether the service data transmission time length 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 switching apparatus in a multi-frequency network, including:
the determining module is used for determining candidate user equipment and candidate pilot frequency adjacent 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 estimation result of the candidate user equipment to the candidate pilot frequency adjacent cell for each candidate user equipment and each candidate pilot frequency adjacent cell;
and the switching module is used for cutting the candidate user equipment to the candidate pilot frequency adjacent cell if the performance improvement estimation 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 in the memory and executable on the processor, where the program is executed to implement a cell handover method in a multi-frequency network according to any one of various possible implementation manners of the first aspect.
In a fourth aspect, an embodiment of the present invention 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 steps of the cell handover method in a multi-frequency network as in any one of the various possible implementations of the first aspect.
According to the cell switching method and device in the multi-frequency network, provided by the embodiment of the invention, the candidate user equipment and the candidate pilot frequency adjacent cell are determined, when the performance improvement estimation result of the candidate user equipment tangential candidate pilot frequency adjacent cell meets the preset condition, the candidate user equipment tangential candidate pilot frequency adjacent cell can realize the optimal carrier selection of the multi-frequency network, the carrier with better experience can be quickly selected for the user with large data transmission demand, and the carrier optimization can be realized.
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 flowchart illustrating 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 apparatus in a multi-frequency network according to an embodiment of the present invention;
fig. 3 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.
In order to overcome the above problems in the prior art, embodiments of the present invention provide a method and an apparatus for cell switching in a Multi-Frequency network, where an MBB (Mobile broadband) scenario (a downlink 3 Carrier aggregation scenario or an FDD (Frequency Division duplex) scenario) has characteristics of large burst data traffic and fast load change, a Multi-band Optimal Carrier Selection (mb) is performed to quickly select a Carrier with better ocs for a user with a large data transmission requirement and perform cell switching instead of only providing switching of an RF (Radio Frequency) Carrier Frequency (channel), so that a user equipment can more quickly switch to a Carrier with the most extra content, thereby improving switching efficiency and bandwidth utilization and power efficiency, the application scene is wide.
Fig. 1 is a flowchart illustrating 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: step S101, if judging that the load of the service cell reaches a preset service load threshold, determining candidate user equipment and candidate pilot frequency adjacent cells.
It should be noted that the execution subject of the cell handover method provided by the embodiment of the present invention may be a node (eNodeB).
And the eNodeB evaluates the load of the service cell and judges that the load reaches a preset service load threshold. If the cell switching is needed, determining candidate User Equipment (UE) and candidate pilot frequency adjacent cells.
A serving cell refers to a serving cell of a general UE or a PCell of a CA (Carrier Aggregation) UE.
And the candidate UE is the UE which may need to carry out cell switching. The number of candidate UEs may be one or more according to the actual situation.
And the candidate pilot frequency adjacent cell is a pilot frequency adjacent cell which can be tangent. According to the actual situation, the number of the candidate different-frequency adjacent cells can be one or more.
Step S102, for each candidate user equipment and each candidate pilot frequency adjacent cell, obtaining a performance improvement estimation result of the candidate user equipment to the candidate pilot frequency adjacent cell.
Specifically, a candidate UE and a candidate pilot frequency neighboring cell are used as a combination, and after a carrier frequency channel of the candidate UE is switched from a serving cell to the candidate pilot frequency neighboring cell, the performance improvement range is evaluated as a performance improvement estimation result.
The performance improvement may include performance improvement of the UE and performance improvement of the candidate inter-frequency neighboring cell.
For the UE, the performance boost may be a boost in spectral efficiency.
For the candidate pilot frequency adjacent cells, the performance improvement may be the improvement of the comprehensive rate.
And step S103, if the performance improvement estimation result is judged to meet the preset condition, the candidate user equipment is tangent to the candidate pilot frequency adjacent cell.
Specifically, whether the performance improvement estimation result meets a preset condition is judged, if yes, the performance can be obviously improved, and the candidate user equipment can be switched to the candidate pilot frequency adjacent cell from the serving cell.
The preset condition may be that a preset amplitude threshold is reached.
It can be understood that, for a combination of a candidate UE and a candidate pilot frequency neighboring cell, it is required that both the performance improvement of the UE and the performance improvement of the candidate pilot frequency neighboring cell satisfy a preset condition.
It can be understood that, for a certain candidate UE, if there are multiple candidate inter-frequency neighboring cells that all satisfy the condition that the performance improvement estimation result satisfies the preset condition, the candidate UE may be directed to any one of the multiple candidate inter-frequency neighboring cells.
According to the embodiment of the invention, by determining the candidate user equipment and the candidate pilot frequency adjacent cell, when the performance improvement estimation result of the candidate user equipment tangential candidate pilot frequency adjacent cell meets the preset condition, the candidate user equipment tangential candidate pilot frequency adjacent cell can realize the optimal carrier selection of the multi-frequency network, quickly select the carrier with better experience for the user with large data transmission demand, and realize the carrier optimization.
Based on the content of the foregoing embodiments, the specific step of determining the candidate user equipment includes: and according to a preset period, determining each user equipment meeting the preset conditions as 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.
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. a UE that does not perform an eMBMS (evolved multimedia Broadcast multicast) service;
3. only QCI 5-9-carried UE exists;
4. UE which is not in the protection period of the load balancing switch-in protection timer;
5. UE with downlink data volume larger than pilot frequency measurement service volume threshold in the monitoring period;
6. UE with the ratio of the estimated data transmission time to the cell accumulated data transmission time being less than or equal to the pilot frequency measurement load ratio threshold in the monitoring period;
7. a UE using an average MCS (Modulation and Coding Scheme, Modulation and Coding strategy) order lower than a pilot frequency measurement MCS threshold;
8. and screening out the CA UE entering the uplink carrier aggregation state through the intelligent uplink carrier aggregation combination selection function.
The embodiment of the invention can avoid the random switching of the radio frequency channel of the user equipment by determining the candidate user equipment, thereby realizing the carrier optimization.
Based on the content of the foregoing embodiments, the specific step of determining the candidate inter-frequency neighboring cell includes: and determining a candidate pilot frequency neighboring cell set according to whether an overlapped covering neighboring cell exists in the pilot frequency neighboring cells of the service cell.
Specifically, it is first determined whether an overlapping coverage neighbor cell exists in the inter-frequency neighbor cell of the serving cell.
If the overlapped covering neighbor cells exist in the pilot frequency neighbor cells, the candidate pilot frequency neighbor cells need to satisfy one of the following conditions:
1. overlapping and covering adjacent cells by the same station;
2. and configuring the different-station overlapping coverage neighbor cell of the X2 link.
And if the overlapped covering neighbor cells do not exist in the pilot frequency neighbor cells, determining candidate pilot frequency neighbor cells according to the pilot frequency load balancing neighbor cell range. The candidate pilot frequency adjacent cell needs to satisfy one of the following conditions:
1. and if the same-station different-frequency neighbor cell exists, only the same-station different-frequency neighbor cell is selected as a candidate different-frequency neighbor cell. Otherwise, selecting the different-station different-frequency adjacent cell configured with the X2 link as a candidate different-frequency adjacent cell;
2. and selecting the same-station pilot frequency adjacent cell and the different-station pilot frequency adjacent cell configured with the X2 link as candidate pilot frequency adjacent cells.
In addition, the eNodeB also screens the following cells that cannot be used as candidate inter-frequency neighboring cells from the candidate inter-frequency neighboring cell set:
1. setting a blacklist cell;
2. cells with the same working frequency and PCI in the neighbor cell list;
3. a cell in an energy saving state (the energy saving state refers to intelligent turn-off of a same coverage carrier, intelligent turn-off of UMTS (Universal Mobile Telecommunications System) and a same coverage carrier, and low power consumption);
4. and exchanging information with the current service cell under no load or the load is higher than that of the current service cell.
The embodiment of the invention can avoid the random switching of the radio frequency channel of the user equipment by determining the candidate pilot frequency adjacent cell, thereby realizing the carrier optimization.
Based on the content of the foregoing embodiments, the specific step of obtaining the performance improvement estimation result of the candidate user equipment tangential candidate pilot frequency neighboring cell includes: and sending a pilot frequency measurement instruction to the candidate user equipment, and acquiring pilot frequency measurement information reported by the candidate user equipment, wherein the pilot frequency measurement information is used for performing pilot frequency measurement on the candidate pilot frequency neighboring cell according to the pilot 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 neighboring cell by issuing an inter-frequency measurement instruction to each candidate UE.
For normal UEs, the inter-frequency measurement uses a4 measurement.
For CA UE, frequency point measurement of SCC (Secondary Component Carrier) is measured by a5, and measurement of the remaining pilot frequency points is measured by a 4.
And after the candidate UE carries out pilot frequency measurement, reporting the acquired pilot frequency measurement information to the eNodeB.
And acquiring a performance improvement estimation result of the candidate user equipment to the candidate pilot frequency adjacent cell according to the pilot frequency measurement information.
Specifically, since the UE needs to start a GAP for inter-frequency measurement, which may affect the data transmission performance of the UE, the eNodeB may stop the inter-frequency measurement after the UE reports the inter-frequency measurement information. At this time, the a3 co-frequency measurement of the UE is still continuous and is reported to the eNodeB periodically (which may be set by itself). The eNodeB judges whether the fluctuation of the RSRP of the same frequency of the user exceeds a certain range according to the RSRP (reference Signal Receiving Power) measured by the same frequency cell reported by the UE. And if the pilot frequency measurement result exceeds the preset threshold value, deleting the pilot frequency measurement result of the UE and re-triggering the UE to perform pilot frequency measurement. When the UE is not selected as a candidate UE for 4 seconds, the a3 co-channel measurement is deleted.
According to the pilot frequency measurement information, the performance improvement range after the carrier frequency channel of the candidate UE is switched from the serving cell to the candidate pilot frequency adjacent cell can be evaluated and used as a performance improvement estimation result.
According to the embodiment of the invention, the UE is triggered to carry out pilot frequency measurement, and the performance improvement estimation result of the candidate user equipment tangential to the candidate pilot frequency adjacent cell is obtained according to the pilot frequency measurement information obtained by carrying out pilot frequency measurement, so that cell switching can be carried out according to the performance improvement estimation result, and carrier optimization can be realized.
Based on the content of the foregoing embodiments, the specific step of obtaining the performance improvement estimation result of the candidate user equipment tangential to the candidate pilot frequency neighboring cell according to the pilot frequency measurement information includes: and according to the pilot frequency measurement information, acquiring the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate pilot frequency adjacent cell.
Specifically, for a common UE, the eNodeB estimates the UE spectrum efficiency in the serving cell and the inter-frequency neighboring cell obtained by the measurement of the serving cell by the UE according to RSRP measurement information, bandwidth, and multi-antenna configuration.
For CA UEs, the eNodeB estimates the spectral efficiency of the original CA combination and the target CA combination, respectively. The spectral efficiency of the CA combination may be integrated into the spectral efficiency calculations of the plurality of cells in the CA combination of the UE.
And obtaining the relative improving amplitude of the frequency spectrum efficiency of the candidate user equipment to the candidate pilot frequency adjacent cell according to the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate pilot frequency adjacent cell.
Specifically, the eNodeB may obtain a relative increase of the spectrum efficiency of the UE switching from the current cell to the target pilot frequency neighboring cell according to the spectrum efficiency of the candidate user equipment in the serving cell and the candidate pilot frequency neighboring cell.
According to the embodiment of the invention, the relative frequency spectrum efficiency improvement amplitude of the candidate user equipment tangential candidate pilot frequency adjacent cell is obtained according to the pilot frequency measurement information, so that the cell switching can be carried out according to the relative frequency spectrum efficiency improvement amplitude, and the carrier optimization can be realized.
Based on the content of the foregoing embodiments, the specific step of obtaining the performance improvement estimation result of the candidate user equipment tangential to the candidate pilot frequency neighboring cell according to the pilot frequency measurement information further includes: and obtaining the promotion amplitude of the average user experience rate of the switched candidate pilot frequency adjacent cell according to the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate pilot frequency adjacent cell, the number of data transmission users and the data volume of the data transmission users.
It should be noted that the embodiment of the present invention is applicable to obtaining the improvement amplitude of the average user experience rate of the inter-frequency neighboring cell in the station.
Specifically, for the candidate inter-frequency neighboring cell, the eNodeB estimates the average user experience rate of the inter-frequency neighboring cell in the station before switching according to the spectrum efficiency, the number of data transmission users, and the data volume of the data transmission users, and then estimates the average user experience rate of the cell after the UE is switched to the inter-frequency neighboring cell in the station.
By comparing the average experience rates of the users of the cells before and after the handover, the improvement range of the average experience rate of the users of the candidate pilot frequency adjacent cells after the handover can be obtained.
It should be noted that, it is impossible to accurately calculate and obtain the true user experience rate, and therefore, the embodiment of the present invention is a relative measure for estimating the performance difference between cells.
According to the embodiment of the invention, the cell switching can be carried out according to the improvement range of the average experience rate of the user by taking the improvement range of the average experience rate of the user of the candidate pilot frequency adjacent cell after the switching, and the carrier optimization can be realized.
Based on the content of the foregoing embodiments, if it is determined that the load of the serving cell reaches the preset service load threshold, determining that the candidate user equipment and the candidate inter-frequency neighboring cell further include: 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 index for evaluating the load may be the transmission duration of the service data.
It should be noted that both the period and the service load threshold may be set according to actual situations, and for specific values, the embodiments of the present invention are not limited specifically.
The embodiment of the invention determines whether to carry out cell switching by judging whether the service data transmission time length in the service cell reaches the service load threshold, thereby realizing carrier optimization through cell switching.
Fig. 2 is a schematic structural diagram of a cell switching apparatus 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, wherein:
a determining module 201, configured to determine a candidate user equipment and a candidate inter-frequency neighboring cell if it is determined that the load of the serving cell reaches a preset service load threshold;
an evaluation module 202, configured to obtain, for each candidate user equipment and each candidate pilot frequency neighboring cell, a performance improvement estimation result of the candidate user equipment to the candidate pilot frequency neighboring cell;
the switching module 203 is configured to, if it is determined that the performance improvement estimation result meets a preset condition, switch the candidate user equipment to the candidate pilot frequency neighboring cell.
Specifically, the determination module 201, the evaluation 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 service load threshold. If the cell switching is needed, determining candidate UE and candidate pilot frequency adjacent cells.
The evaluation module 202 uses a candidate UE and a candidate pilot frequency neighboring cell as a combination, and evaluates the performance improvement range after switching the carrier frequency channel of the candidate UE from the serving cell to the candidate pilot frequency neighboring cell, as the performance improvement estimation result.
The switching module 203 determines whether the performance improvement estimation result meets a preset condition, and if so, it indicates that the performance can be obviously improved, and then the candidate ue may be switched from the serving cell to the candidate inter-frequency neighboring cell.
The specific method and process for implementing the corresponding function by each module included in the cell switching device in the multi-frequency network according to the embodiments of the present invention are described in detail in the embodiment of the cell switching method in the multi-frequency network, and are not described herein again.
The cell switching apparatus 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, by determining the candidate user equipment and the candidate pilot frequency adjacent cell, when the performance improvement estimation result of the candidate user equipment tangential candidate pilot frequency adjacent cell meets the preset condition, the candidate user equipment tangential candidate pilot frequency adjacent cell can realize the optimal carrier selection of the multi-frequency network, quickly select the carrier with better experience for the user with large data transmission demand, and realize the carrier optimization.
Fig. 3 is a schematic physical structure diagram 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 complete the 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 a cell handover method in a multi-frequency network as provided by the above-mentioned embodiments of the method, for example, including: if the load of the service cell reaches a preset service load threshold, determining candidate user equipment and candidate pilot frequency adjacent cells; for each candidate user equipment and each candidate pilot frequency adjacent cell, acquiring a performance improvement estimation result of the candidate user equipment to the candidate pilot frequency adjacent cell; and if the performance improvement estimation result is judged to meet the preset condition, the candidate user equipment is tangent to the candidate pilot frequency adjacent cell.
Another embodiment of the present invention discloses a computer program product, the computer program product includes a computer program stored on a non-transitory computer readable storage medium, the computer program includes program instructions, when the program instructions are executed by a computer, the computer can execute the cell handover method in a multi-frequency network provided by the above-mentioned method embodiments, for example, the method includes: if the load of the service cell reaches a preset service load threshold, determining candidate user equipment and candidate pilot frequency adjacent cells; for each candidate user equipment and each candidate pilot frequency adjacent cell, acquiring a performance improvement estimation result of the candidate user equipment to the candidate pilot frequency adjacent cell; and if the performance improvement estimation result is judged to meet the preset condition, the candidate user equipment is tangent to the candidate pilot frequency adjacent cell.
Furthermore, the logic instructions in the memory 302 may be implemented in 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 solutions of the embodiments of the present invention may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including 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 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), a magnetic disk or an optical disk, and 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, which cause a computer to execute a cell handover method in a multi-frequency network according to the above embodiments of the method, for example, the method includes: if the load of the service cell reaches a preset service load threshold, determining candidate user equipment and candidate pilot frequency adjacent cells; for each candidate user equipment and each candidate pilot frequency adjacent cell, acquiring a performance improvement estimation result of the candidate user equipment to the candidate pilot frequency adjacent cell; and if the performance improvement estimation result is judged to meet the preset condition, the candidate user equipment is tangent to the candidate pilot frequency adjacent cell.
The above-described embodiments of the apparatus are merely illustrative, and 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 a plurality of 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. It is understood that the above-described technical solutions may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method of the above-described 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 (10)
1. A method for cell handover in a multi-frequency network, comprising:
if the load of the service cell reaches a preset service load threshold, determining candidate user equipment and candidate pilot frequency adjacent cells;
for each candidate user equipment and each candidate pilot frequency neighboring cell, acquiring a performance improvement estimation result of the candidate user equipment tangential to the candidate pilot frequency neighboring cell;
and if the performance improvement estimation result meets the preset condition, the candidate user equipment is tangent to the candidate pilot frequency adjacent cell.
2. The method of claim 1, wherein the step of determining candidate ues comprises:
and according to the preset period, determining each user equipment meeting the preset conditions as the candidate user equipment.
3. The method of claim 1, wherein the step of determining the candidate inter-frequency neighboring cells comprises:
and determining a candidate pilot frequency neighboring cell set according to whether an overlapped covering neighboring cell exists in the pilot frequency neighboring cells of the service cell.
4. The method according to claim 1, wherein the step of obtaining the performance improvement estimation result of the candidate ue towards the candidate inter-frequency neighboring cell comprises:
sending a pilot frequency measurement instruction to the candidate user equipment to obtain pilot frequency measurement information reported by the candidate user equipment, wherein the pilot frequency measurement information is used for performing pilot frequency measurement on the candidate pilot frequency neighboring cell according to the pilot frequency measurement instruction;
and acquiring a performance improvement estimation result of the candidate user equipment to the candidate pilot frequency adjacent cell according to the pilot frequency measurement information.
5. The method according to claim 4, wherein the step of obtaining the performance improvement estimation result of the candidate UE to the candidate pilot-frequency neighboring cell according to the pilot-frequency measurement information comprises:
acquiring the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate pilot frequency adjacent cell according to the pilot frequency measurement information;
and obtaining the relative promotion amplitude of the frequency spectrum efficiency of the candidate user equipment to the candidate pilot frequency adjacent cell according to the frequency spectrum efficiency of the candidate user equipment in the service cell and the candidate pilot frequency adjacent cell.
6. The method according to claim 5, wherein the step of obtaining the performance improvement estimation result of the candidate ue to the candidate pilot-frequency neighboring cell according to the pilot-frequency measurement information further comprises:
and acquiring the promotion amplitude of the average user experience rate of the candidate pilot frequency adjacent cell after switching 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 service cell and the candidate pilot frequency adjacent cell.
7. The method according to any one of claims 2 to 6, wherein if it is determined that the load of the serving cell reaches a preset traffic load threshold, determining the candidate user equipment and the candidate inter-frequency neighboring cell further comprises:
and judging whether the service data transmission time length in the service cell reaches the service load threshold or not according to the preset period.
8. A cell switching apparatus in a multi-frequency network, comprising:
the determining module is used for determining candidate user equipment and candidate pilot frequency adjacent 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 estimation result of the candidate user equipment to the candidate pilot frequency adjacent cell for each candidate user equipment and each candidate pilot frequency adjacent cell;
and the switching module is used for cutting the candidate user equipment to the candidate pilot frequency adjacent cell if the performance improvement estimation result is judged to meet the preset condition.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of the method for cell handover in a multi-frequency network according to any of claims 1 to 7.
10. A non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method for cell handover in a multi-frequency network according to any of claims 1 to 7.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1599471A (en) * | 2003-09-17 | 2005-03-23 | 华为技术有限公司 | Realization method and device for controlling load balance in communication system |
| WO2008019629A1 (en) * | 2006-08-15 | 2008-02-21 | Huawei Technologies Co., Ltd. | Method for a terminal measuring neighboring cells and ue thereof |
| CN102202350A (en) * | 2011-05-24 | 2011-09-28 | 北京邮电大学 | Optimization method for load balancing actively initiated by light load cell |
| WO2012125103A1 (en) * | 2011-03-15 | 2012-09-20 | Telefonaktiebolaget L M Ericsson (Publ) | Method and node supporting cell reselection in load balanced network |
| CN103379574A (en) * | 2012-04-26 | 2013-10-30 | 京信通信系统（中国）有限公司 | Switching control method, device and system |
| CN103416089A (en) * | 2012-10-30 | 2013-11-27 | 华为技术有限公司 | Load balancing method and apparatus |
| US20140045494A1 (en) * | 2012-08-07 | 2014-02-13 | Nokia Siemens Networks Oy | Control Mechanism for Autonomous Mobility of Terminal Device |
| CN103703800A (en) * | 2013-05-08 | 2014-04-02 | 华为技术有限公司 | Cell interoperation processing method and apparatus |
| WO2016011752A1 (en) * | 2014-07-25 | 2016-01-28 | 中兴通讯股份有限公司 | Load balancing method and device |
| CN110366218A (en) * | 2018-04-11 | 2019-10-22 | 大唐移动通信设备有限公司 | A kind of method and apparatus of cell switching |
| CN110876167A (en) * | 2018-08-29 | 2020-03-10 | 中国移动通信集团山西有限公司 | Method, device, equipment and medium for determining pilot frequency load balancing threshold |
| CN111356179A (en) * | 2018-12-21 | 2020-06-30 | 中兴通讯股份有限公司 | Load balancing method, device, equipment and storage medium |
-
2020
- 2020-07-03 CN CN202010635253.1A patent/CN113891406B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1599471A (en) * | 2003-09-17 | 2005-03-23 | 华为技术有限公司 | Realization method and device for controlling load balance in communication system |
| WO2008019629A1 (en) * | 2006-08-15 | 2008-02-21 | Huawei Technologies Co., Ltd. | Method for a terminal measuring neighboring cells and ue thereof |
| WO2012125103A1 (en) * | 2011-03-15 | 2012-09-20 | Telefonaktiebolaget L M Ericsson (Publ) | Method and node supporting cell reselection in load balanced network |
| CN102202350A (en) * | 2011-05-24 | 2011-09-28 | 北京邮电大学 | Optimization method for load balancing actively initiated by light load cell |
| CN103379574A (en) * | 2012-04-26 | 2013-10-30 | 京信通信系统（中国）有限公司 | Switching control method, device and system |
| US20140045494A1 (en) * | 2012-08-07 | 2014-02-13 | Nokia Siemens Networks Oy | Control Mechanism for Autonomous Mobility of Terminal Device |
| CN103781136A (en) * | 2012-08-07 | 2014-05-07 | 诺基亚西门子网络公司 | Control mechanism for autonomous mobility of terminal device |
| CN103416089A (en) * | 2012-10-30 | 2013-11-27 | 华为技术有限公司 | Load balancing method and apparatus |
| CN103703800A (en) * | 2013-05-08 | 2014-04-02 | 华为技术有限公司 | Cell interoperation processing method and apparatus |
| WO2016011752A1 (en) * | 2014-07-25 | 2016-01-28 | 中兴通讯股份有限公司 | Load balancing method and device |
| CN110366218A (en) * | 2018-04-11 | 2019-10-22 | 大唐移动通信设备有限公司 | A kind of method and apparatus of cell switching |
| CN110876167A (en) * | 2018-08-29 | 2020-03-10 | 中国移动通信集团山西有限公司 | Method, device, equipment and medium for determining pilot frequency load balancing threshold |
| CN111356179A (en) * | 2018-12-21 | 2020-06-30 | 中兴通讯股份有限公司 | Load balancing method, device, equipment and storage medium |
Non-Patent Citations (4)
| Title |
|---|
| HANA JOUIN ET AL: "Mobility Load Balancing over Intra-frequency Heterogeneous Networks Using Handover Adaptation", 《SPRINGER》, 15 August 2017 (2017-08-15) * |
| NEC: "R3-130136 "Energy Saving enhancement based on User QoS Requirement"", 3GPP TSG_RAN\\WG3_IU, no. 3, 18 January 2013 (2013-01-18) * |
| 冯慧琼;杜建俊;孟颖涛;赵国华;: "TD-LTE多频、分层组网的业务连续性研究", 电信工程技术与标准化, no. 04, 15 April 2016 (2016-04-15) * |
| 蔡进林;: "基于TDD_LTE移动通信双载波负载均衡应用技术研究", 信息通信, no. 10, 15 October 2017 (2017-10-15) * |
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