CN112187380A - Serving cell switching method and device - Google Patents
Serving cell switching method and device Download PDFInfo
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- CN112187380A CN112187380A CN201910591825.8A CN201910591825A CN112187380A CN 112187380 A CN112187380 A CN 112187380A CN 201910591825 A CN201910591825 A CN 201910591825A CN 112187380 A CN112187380 A CN 112187380A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a method and a device for switching a serving cell. The method comprises the following steps: acquiring reference signal receiving power of a source service cell corresponding to a user terminal; determining candidate service cells corresponding to the user terminal, and determining a target service cell from the candidate service cells according to the reference signal receiving power of the candidate service cells and the reference signal receiving power of the source service cell; acquiring a channel quality index and a resource utilization rate of a target serving cell; and when the channel quality index and the resource utilization rate of the target service cell meet preset judgment conditions, switching the user terminal from the source service cell to the target service cell. In the scheme, the switching of the serving cell is further performed by combining the channel quality index and the resource utilization rate of the serving cell on the basis of considering the reference signal receiving power, so that the ping-pong switching problem can be effectively reduced, the switching time delay is reduced, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a serving cell switching method and a serving cell switching device.
Background
In a wireless communication system, when the communication quality of the current serving cell of a user terminal is poor, the user terminal is usually handed over from the current serving cell to another serving cell in order to guarantee the communication experience of the mobile user.
The current serving cell handover method is generally a handover method based on Reference Signal Receiving Power (RSRP). When the method is implemented specifically, the user terminal monitors the RSRP of the serving cell after passing through the filter, and sends a measurement report to the base station corresponding to the serving cell, and when the RSRP of a certain serving cell is always greater than the RSRP of the source serving cell within a preset trigger time, the user terminal triggers the switching from the source serving cell to the serving cell.
However, in the implementation process, the inventor finds that the following defects exist in the prior art: the switching of the serving cell is performed only according to the reference signal received power, which has a serious ping-pong switching problem; in addition, in the prior art, the service cell switching can be realized only by waiting for a long time, so that the switching time delay is long, and the user experience is poor.
Disclosure of Invention
In view of the above, the present invention is proposed to provide a serving cell handover method and apparatus that overcomes or at least partially solves the above problems.
According to an aspect of the present invention, there is provided a serving cell handover method, including:
acquiring reference signal receiving power of a source service cell corresponding to a user terminal;
determining candidate service cells corresponding to the user terminal, and determining a target service cell from the candidate service cells according to the reference signal receiving power of the candidate service cells and the reference signal receiving power of the source service cell;
acquiring a channel quality index and a resource utilization rate of a target serving cell;
and when the channel quality index and the resource utilization rate of the target service cell meet preset judgment conditions, switching the user terminal from the source service cell to the target service cell.
Optionally, the reference signal received power of the target serving cell is greater than the reference signal received power of the source serving cell.
Optionally, the determining a target serving cell from the candidate serving cells according to the reference signal received power of the candidate serving cells and the reference signal received power of the source serving cell further includes:
and determining a candidate serving cell with the maximum reference signal receiving power, and determining a target serving cell according to the candidate serving cell with the maximum reference signal receiving power.
Optionally, the determining a target serving cell from the candidate serving cells according to the reference signal received power of the candidate serving cells and the reference signal received power of the source serving cell further includes:
and determining a candidate serving cell with reference signal received power larger than a first preset threshold value, and determining a target serving cell according to the candidate serving cell with reference signal received power larger than the first preset threshold value.
Optionally, the block error rate of the target serving cell is smaller than a second preset threshold.
Optionally, when the channel quality indicator and the resource utilization rate of the target serving cell satisfy preset decision conditions, the switching the user terminal from the source serving cell to the target serving cell further includes:
when the channel quality index of the target serving cell is greater than a third preset threshold and the resource utilization rate of the target serving cell is less than a fourth preset threshold;
and switching the user terminal from the source serving cell to the target serving cell.
Optionally, when the user equipment is switched from the source serving cell to the target serving cell, the channel quality indicator of the source serving cell is smaller than a fifth preset threshold.
According to another aspect of the present invention, there is provided a serving cell switching apparatus, comprising:
the first acquisition module is suitable for acquiring the reference signal receiving power of a source service cell corresponding to the user terminal;
a determining module, adapted to determine candidate serving cells corresponding to the user equipment, and determine a target serving cell from the candidate serving cells according to the reference signal received power of the candidate serving cells and the reference signal received power of the source serving cell;
the second acquisition module is suitable for acquiring the channel quality index and the resource utilization rate of the target serving cell;
and the switching module is suitable for switching the user terminal from the source serving cell to the target serving cell when the channel quality index and the resource utilization rate of the target serving cell meet preset judgment conditions.
Optionally, the reference signal received power of the target serving cell is greater than the reference signal received power of the source serving cell.
Optionally, the determining module is further adapted to: and determining a candidate serving cell with the maximum reference signal receiving power, and determining a target serving cell according to the candidate serving cell with the maximum reference signal receiving power.
Optionally, the determining module is further adapted to: and determining a candidate serving cell with reference signal received power larger than a first preset threshold value, and determining a target serving cell according to the candidate serving cell with reference signal received power larger than the first preset threshold value.
Optionally, the block error rate of the target serving cell is smaller than a second preset threshold.
Optionally, the switching module is further adapted to: when the channel quality index of the target serving cell is greater than a third preset threshold and the resource utilization rate of the target serving cell is less than a fourth preset threshold;
and switching the user terminal from the source serving cell to the target serving cell.
Optionally, when the user equipment is switched from the source serving cell to the target serving cell, the channel quality indicator of the source serving cell is smaller than a fifth preset threshold.
According to yet another aspect of the present invention, there is provided a computing device comprising: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus;
the memory is used for storing at least one executable instruction, and the executable instruction causes the processor to execute the serving cell switching method.
According to yet another aspect of the present invention, there is provided a computer storage medium having at least one executable instruction stored therein, the executable instruction causing a processor to perform the serving cell handover method as described above.
According to the serving cell switching method and device provided by the invention, the reference signal receiving power of a source serving cell corresponding to a user terminal is obtained; determining candidate service cells corresponding to the user terminal, and determining a target service cell from the candidate service cells according to the reference signal receiving power of the candidate service cells and the reference signal receiving power of the source service cell; further acquiring a channel quality index and a resource utilization rate of the target serving cell; and finally, when the channel quality index and the resource utilization rate of the target service cell meet preset judgment conditions, switching the user terminal from the source service cell to the target service cell. In the scheme, on the basis of considering the reference signal receiving power, switching is further performed by combining the channel quality index and the resource utilization rate of the serving cell, so that the ping-pong switching problem can be effectively reduced, the switching time delay is reduced, and the user experience is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a flowchart illustrating a serving cell handover method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a serving cell handover method according to another embodiment of the present invention;
fig. 3 is a functional block diagram of a serving cell switching apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a computing device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Fig. 1 is a flowchart illustrating a serving cell handover method according to an embodiment of the present invention. The serving cell handover method provided in this embodiment may be executed by the base station. As shown in fig. 1, the method includes:
step S110, obtaining the reference signal received power of the source serving cell corresponding to the ue.
In this embodiment, the source serving cell corresponding to the user terminal specifically includes: when this step is performed, the user terminal occupies the serving cell. In an actual implementation process, the ue may perform measurement on at least one serving cell covering the ue, and the ue feeds back a measurement report to the base station. The measurement report at least includes information such as reference signal received power of at least one serving cell corresponding to the ue.
Optionally, when it is determined that the communication quality of the user terminal is low according to the measurement report fed back by the user terminal, to ensure the communication experience of the user, the serving cell needs to be switched, so as to trigger the execution of the subsequent steps. Specifically, when the reference signal received power of the source serving cell corresponding to the user terminal is smaller than a preset power threshold, and/or a Channel Quality Indicator (CQI) of the source serving cell corresponding to the user terminal is smaller than a preset threshold, which can characterize that the current communication Quality of the user terminal is low, execution of subsequent steps is triggered.
Step S120, determining candidate service cells corresponding to the user terminal, and determining a target service cell from the candidate service cells according to the reference signal receiving power of the candidate service cells and the reference signal receiving power of the source service cell.
When the serving cell handover is determined to be required, the target serving cell can be determined through the step. And the target serving cell is the preliminarily determined serving cell corresponding to the user terminal after the handover.
In this embodiment, a candidate serving cell corresponding to the ue is determined first. The candidate serving cell is a serving cell covering the ue and is different from a source serving cell corresponding to the ue. And further, the reference signal receiving power of the candidate serving cell corresponding to the user terminal can be obtained through the measurement report reported by the user terminal.
Further, the target serving cell is determined from the candidate serving cells according to the reference signal received power of the candidate serving cells and the reference signal received power of the source serving cell. In this embodiment, a specific determination method of the target serving cell is not limited, for example, a candidate serving cell whose reference signal received power is greater than that of the source serving cell may be used as the target serving cell.
Step S130, obtaining the channel quality index and the resource utilization rate of the target serving cell.
In order to further improve the user experience in the process of switching the serving cell and reduce the ping-pong switching problem, in this embodiment, after the target serving cell is determined according to the reference signal received power of the serving cell, the user terminal is not directly switched from the source serving cell to the target serving cell, but the channel quality index and the resource utilization rate of the target serving cell are further obtained, so that the final serving cell switching judgment is performed comprehensively according to the anti-interference capability and the load condition of the serving cell. The resource utilization ratio is specifically a prb (physical resource block) utilization ratio. The embodiment does not limit the channel quality index of the target serving cell and the specific acquisition mode of the resource utilization rate.
Step S140, when the channel quality index and the resource utilization rate of the target service cell satisfy the preset judgment condition, the user terminal is switched from the source service cell to the target service cell.
After the channel quality index and the resource utilization rate of the target serving cell are obtained, whether the channel quality index and the resource utilization rate of the target serving cell meet preset judgment conditions is further judged. When the channel quality index and the resource utilization rate of the target service cell do not meet the preset judgment condition, terminating the switching of the user terminal from the source service cell to the target service cell; when the channel quality index and the resource utilization rate of the target serving cell meet preset judgment conditions, the user terminal is switched from the source serving cell to the target serving cell, so that the serving cell finally switched by the user terminal has better channel quality and lower resource utilization rate, the ping-pong switching problem is reduced, and the user experience is improved.
Therefore, in this embodiment, the reference signal received power of the source serving cell corresponding to the ue is obtained; and determining candidate service cells corresponding to the user terminal, and determining a target service cell from the candidate service cells according to the reference signal receiving power of the candidate service cells and the reference signal receiving power of the source service cell. After the target serving cell is determined, the user terminal is not directly switched from the source serving cell to the target serving cell, but the channel quality index and the resource utilization rate of the target serving cell are further obtained, and the user terminal is switched from the source serving cell to the target serving cell only when the channel quality index and the resource utilization rate of the target serving cell meet preset judgment conditions, so that the switching is further carried out by combining the channel quality index and the resource utilization rate of the serving cell on the basis of considering the reference signal receiving power, the ping-pong switching problem can be effectively reduced, the switching delay is reduced, and the user experience is improved.
Fig. 2 is a flowchart illustrating a serving cell handover method according to another embodiment of the present invention. The serving cell handover method provided in this embodiment is directed to further optimization of the method embodiment shown in fig. 1. As shown in fig. 2, the method includes:
step S210, obtaining the reference signal received power of the source serving cell corresponding to the ue.
The specific implementation process of this step may refer to the description of the corresponding part in the embodiment shown in fig. 1, and this embodiment is not described herein again.
Step S220, determine a target serving cell from the candidate serving cells corresponding to the user equipment.
In order to enable the serving cell to which the ue is finally handed over to provide a good communication service for the ue, and reduce the ping-pong handover problem, the reference signal received power of the target serving cell should be greater than the reference signal received power of the source serving cell. In this embodiment, the target serving cell is specifically determined according to the reference signal received power of the candidate serving cell and the reference signal received power of the source serving cell, and since the reference signal received power can reflect the coverage characteristics of the serving cell, the target serving cell is preliminarily determined based on the coverage characteristics of the candidate serving cell and the source serving cell.
Specifically, the present embodiment specifically determines the target serving cell from the candidate serving cells corresponding to the user equipment by the following method:
the first implementation mode comprises the following steps: and determining the candidate serving cell with the maximum reference signal receiving power, and determining the target serving cell according to the candidate serving cell with the maximum reference signal receiving power. In a specific implementation process, the triggering time of step S210 may be determined as a first time, and a candidate serving cell with the largest reference signal received power at a second time (where the second time is later than the first time) is determined, and then it is determined whether the reference signal received power of the candidate serving cell with the largest reference signal received power at the second time is greater than the reference signal received power of the source serving cell at the first time (or the second time), if so, the candidate serving cell with the largest reference signal received power is determined as the target serving cell; if not, further determining the next second time (wherein the next second time is slightly later than the previous second time), and repeating the above operations until the target serving cell is determined.
For example, in the downlink scenario where the ue is covered by multiple cells, if the ue is covered by n cells (i.e. a)1、a2、…an) At T0At the moment, the serving cell occupied by the user terminal is ai(i.e. T)0The source service cell corresponding to the user terminal at the moment is ai) Then at T0+ Δ t (i.e., the second time instant), determines a of the n serving cellsjIs T0The serving cell with the maximum reference signal received power at the moment of + delta t is further judged to be a in the serving celljWhether the reference signal received power is greater than T0Time of day (or T)0Time + Δ t) reference signal received power of source serving cell, if yes, a may be setjAs a target serving cell; if not, judging T0+ Δ T + Δ T' (i.e., the next second time) of the serving cell having the highest reference signal received power, and determining whether the serving cell reference signal received power is greater than T0Time of day (or T)0Time + Δ t + Δ t') of the serving cell, and so on until the reference signal received power of the serving cell with the maximum reference signal received power at the second time is greater than the reference signal received power of the source serving cell, and the serving cell is determined to be the target serving cell.
The second embodiment: and determining candidate service cells with reference signal received power larger than a first preset threshold value, and determining a target service cell according to the candidate service cells with reference signal received power larger than the first preset threshold value. Specifically, determining a candidate serving cell whose reference signal received power is greater than a first preset threshold at a second time, and further determining whether the reference signal received power of the candidate serving cell whose reference signal received power is greater than the first preset threshold is greater than the reference signal received power of a source serving cell at the first time (or the second time) at the second time, if so, determining the candidate serving cell whose reference signal received power is greater than the first preset threshold as a target serving cell; if not, further determining the next second time, and repeating the above operations until the target serving cell is determined.
Optionally, in order to further reduce the ping-pong handover problem and improve user experience, in this embodiment, a Block Error rate (Bler Ratio, Bler for short) of the target serving cell is smaller than a second preset threshold. In a specific implementation process, if the reference signal received power of the serving cell with the largest reference signal received power is greater than the reference signal received power of the source serving cell at the second time, further determining whether the block error rate of the serving cell is less than a second threshold (where the second threshold may be 10%, etc.), and if so, determining the serving cell as the target serving cell; if not, further determining the next second time, and determining that the serving cell is the target serving cell when the reference signal received power of the serving cell with the maximum reference signal received power is greater than the reference signal received power of the source serving cell at the second time and the block error rate is less than a second threshold.
Step S230, obtaining the channel quality index and the resource utilization rate of the target serving cell.
After the target serving cell is determined, the channel quality index and the resource utilization rate of the target serving cell are further obtained. Wherein, the channel quality index of the target serving cell can be determined by the corresponding MCS (Modulation and Coding Scheme, Modulation and Coding strategy) level; the resource utilization rate can calculate the PRB utilization rate of the target serving cell in a preset time period according to the PRB resource number counted by the physical layer of the base station in real time. The present embodiment does not limit the specific obtaining manner of the channel quality indicator and the resource utilization rate of the target serving cell, and those skilled in the art may adopt other obtaining manners of the channel quality indicator and the resource utilization rate besides the above manners.
The higher the channel quality index of the target serving cell is, the higher the communication quality of the target serving cell is; the lower the resource utilization rate of the target serving cell is, the lower the load of the target serving cell is, so that whether to perform subsequent serving cell handover is comprehensively determined according to the communication quality (specifically, the anti-interference capability) and the load condition of the target serving cell.
Step S240, when the channel quality indicator of the target serving cell is greater than the third preset threshold and the resource utilization rate of the target serving cell is less than the fourth preset threshold, switching the user terminal from the source serving cell to the target serving cell.
After the channel quality index and the resource utilization rate of the target serving cell are obtained, whether the target serving cell meets the following preset judgment conditions is further judged: the channel quality index is greater than a third preset threshold, and the resource utilization rate of the target serving cell is less than a fourth preset threshold. If the channel quality index of the target serving cell is greater than a third preset threshold and the resource utilization rate of the target serving cell is less than a fourth preset threshold, the fact that the communication quality of the target serving cell is excellent, the anti-interference capability is high, and the load is low is indicated, so that the user terminal is switched from the source serving cell to the target serving cell, the defect that the user terminal is easily switched to a serving cell with poor communication quality and high load in the prior art is overcome, the ping-pong switching problem is reduced, the user experience is improved, and the switching is not required to be carried out for a preset time length in the prior art, and the switching time delay is further reduced; and if the channel quality index of the target service cell is less than or equal to a third preset threshold value and/or the resource utilization rate of the target service cell is greater than or equal to a fourth preset threshold value, terminating the switching of the user terminal from the source service cell to the target service cell.
Optionally, in order to further improve user experience, ping-pong handover problems are reduced. In this embodiment, when the communication quality of the source serving cell is high at the current time, the handover from the source serving cell to the target serving cell is not triggered. Specifically, a corresponding decision threshold (i.e. a fifth preset threshold, which may be 12-15, etc.) may be configured for the source serving cell, and when the user terminal is switched from the source serving cell to the target serving cell, the channel quality indicator of the source serving cell should be smaller than the fifth preset threshold. That is, when the channel quality indicator of the target serving cell is greater than the third preset threshold at the third time (the third time is later than the second time), the resource utilization rate of the target serving cell is less than the fourth preset threshold, and the channel quality indicator of the source serving cell is less than the fifth preset threshold, the user terminal is switched from the source serving cell to the target serving cell.
Further optionally, at a third time, if the channel quality indicator of the target serving cell is greater than or equal to a sixth preset threshold (where the sixth preset threshold may be equal to a fifth preset threshold), when the channel quality indicator of the target serving cell is greater than the third preset threshold and the resource utilization rate of the target serving cell is less than a fourth preset threshold, the user terminal is switched from the source serving cell to the target serving cell; or, at a third time, if the channel quality index of the target serving cell is smaller than a sixth preset threshold, when the channel quality index of the target serving cell is larger than the third preset threshold, the resource utilization rate of the target serving cell is smaller than the fourth preset threshold, and the channel quality index of the target serving cell is larger than the channel quality index of the source serving cell, switching the user terminal from the source serving cell to the target serving cell.
Therefore, in this embodiment, on the basis of considering the reference signal received power, the channel quality index and the resource utilization rate of the target serving cell are further obtained, and only when the channel quality index of the target serving cell is greater than the third preset threshold and the resource utilization rate of the target serving cell is less than the fourth preset threshold, the user terminal is switched from the source serving cell to the target serving cell, so that the drawback that the user terminal is easily switched to a serving cell with poor communication quality and high load in the prior art is avoided, the ping-pong switching problem is reduced, the user experience is improved, and the switching is performed without waiting for a preset time length as in the prior art, so that the switching delay is further reduced; in addition, the error rate of the target service small block determined in the embodiment is smaller than the second preset threshold, which is beneficial to further reducing the ping-pong handover problem and improving the user experience.
Fig. 3 is a functional structure diagram of a serving cell switching apparatus according to an embodiment of the present invention. As shown in fig. 3, the apparatus includes: a first obtaining module 31, a determining module 32, a second obtaining module 33, and a switching module 34.
A first obtaining module 31, adapted to obtain a reference signal received power of a source serving cell corresponding to a user equipment;
a determining module 32, adapted to determine candidate serving cells corresponding to the user equipment, and determine a target serving cell from the candidate serving cells according to the reference signal received power of the candidate serving cells and the reference signal received power of the source serving cell;
a second obtaining module 33, adapted to obtain a channel quality indicator and a resource utilization rate of the target serving cell;
and a switching module 34, adapted to switch the ue from the source serving cell to the target serving cell when the channel quality indicator and the resource utilization of the target serving cell satisfy preset decision conditions.
Optionally, the reference signal received power of the target serving cell is greater than the reference signal received power of the source serving cell.
Optionally, the determining module is further adapted to: and determining a candidate serving cell with the maximum reference signal receiving power, and determining a target serving cell according to the candidate serving cell with the maximum reference signal receiving power.
Optionally, the determining module is further adapted to: and determining a candidate serving cell with reference signal received power larger than a first preset threshold value, and determining a target serving cell according to the candidate serving cell with reference signal received power larger than the first preset threshold value.
Optionally, the block error rate of the target serving cell is smaller than a second preset threshold.
Optionally, the switching module is further adapted to: when the channel quality index of the target serving cell is greater than a third preset threshold and the resource utilization rate of the target serving cell is less than a fourth preset threshold;
and switching the user terminal from the source serving cell to the target serving cell.
Optionally, when the user equipment is switched from the source serving cell to the target serving cell, the channel quality indicator of the source serving cell is smaller than a fifth preset threshold.
In this embodiment, a specific implementation process of each module in the serving cell handover apparatus may refer to descriptions of corresponding parts in the method embodiment shown in fig. 1 and/or fig. 2, which are not described herein again.
Therefore, in this embodiment, the reference signal received power of the source serving cell corresponding to the ue is obtained; and determining candidate service cells corresponding to the user terminal, and determining a target service cell from the candidate service cells according to the reference signal receiving power of the candidate service cells and the reference signal receiving power of the source service cell. After the target serving cell is determined, the user terminal is not directly switched from the source serving cell to the target serving cell, but the channel quality index and the resource utilization rate of the target serving cell are further obtained, and the user terminal is switched from the source serving cell to the target serving cell only when the channel quality index and the resource utilization rate of the target serving cell meet preset judgment conditions, so that the switching is further carried out by combining the channel quality index and the resource utilization rate of the serving cell on the basis of considering the reference signal receiving power, the ping-pong switching problem can be effectively reduced, the switching delay is reduced, and the user experience is improved.
According to an embodiment of the present invention, a non-volatile computer storage medium is provided, where the computer storage medium stores at least one executable instruction, and the computer executable instruction can execute a serving cell handover method in any of the above method embodiments.
Fig. 4 is a schematic structural diagram of a computing device according to an embodiment of the present invention, and the specific embodiment of the present invention does not limit the specific implementation of the computing device.
As shown in fig. 4, the computing device may include: a processor (processor)402, a Communications Interface 404, a memory 406, and a Communications bus 408.
Wherein:
the processor 402, communication interface 404, and memory 406 communicate with each other via a communication bus 408.
A communication interface 404 for communicating with network elements of other devices, such as clients or other servers.
The processor 402 is configured to execute the program 410, and may specifically execute the relevant steps in the serving cell handover method embodiment described above.
In particular, program 410 may include program code comprising computer operating instructions.
The processor 402 may be a central processing unit CPU or an application Specific Integrated circuit asic or one or more Integrated circuits configured to implement embodiments of the present invention. The computing device includes one or more processors, which may be the same type of processor, such as one or more CPUs; or may be different types of processors such as one or more CPUs and one or more ASICs.
And a memory 406 for storing a program 410. Memory 406 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
The program 410 may specifically be configured to cause the processor 402 to perform the following operations:
acquiring reference signal receiving power of a source service cell corresponding to a user terminal;
determining candidate service cells corresponding to the user terminal, and determining a target service cell from the candidate service cells according to the reference signal receiving power of the candidate service cells and the reference signal receiving power of the source service cell;
acquiring a channel quality index and a resource utilization rate of a target serving cell;
and when the channel quality index and the resource utilization rate of the target service cell meet preset judgment conditions, switching the user terminal from the source service cell to the target service cell.
In an optional embodiment, the reference signal received power of the target serving cell is greater than the reference signal received power of the source serving cell.
In an alternative embodiment, the program 410 may be specifically configured to cause the processor 402 to perform the following operations:
and determining a candidate serving cell with the maximum reference signal receiving power, and determining a target serving cell according to the candidate serving cell with the maximum reference signal receiving power.
In an alternative embodiment, the program 410 may be specifically configured to cause the processor 402 to perform the following operations:
and determining a candidate serving cell with reference signal received power larger than a first preset threshold value, and determining a target serving cell according to the candidate serving cell with reference signal received power larger than the first preset threshold value.
In an optional embodiment, the block error rate of the target serving cell is smaller than a second preset threshold.
In an alternative embodiment, the program 410 may be specifically configured to cause the processor 402 to perform the following operations:
when the channel quality index of the target serving cell is greater than a third preset threshold and the resource utilization rate of the target serving cell is less than a fourth preset threshold;
and switching the user terminal from the source serving cell to the target serving cell.
In an optional implementation manner, when the user terminal is handed over from the source serving cell to the target serving cell, a channel quality indicator of the source serving cell is smaller than a fifth preset threshold.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It will be appreciated by those skilled in the art that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in a serving cell handover apparatus according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (10)
1. A method for serving cell handover, comprising:
acquiring reference signal receiving power of a source service cell corresponding to a user terminal;
determining candidate service cells corresponding to the user terminal, and determining a target service cell from the candidate service cells according to the reference signal receiving power of the candidate service cells and the reference signal receiving power of the source service cell;
acquiring a channel quality index and a resource utilization rate of a target serving cell;
and when the channel quality index and the resource utilization rate of the target service cell meet preset judgment conditions, switching the user terminal from the source service cell to the target service cell.
2. The method of claim 1, wherein the reference signal received power of the target serving cell is greater than the reference signal received power of the source serving cell.
3. The method of claim 2, wherein the determining a target serving cell from the candidate serving cells according to the reference signal received power of the candidate serving cell and the reference signal received power of the source serving cell further comprises:
and determining a candidate serving cell with the maximum reference signal receiving power, and determining a target serving cell according to the candidate serving cell with the maximum reference signal receiving power.
4. The method of claim 2, wherein the determining a target serving cell from the candidate serving cells according to the reference signal received power of the candidate serving cell and the reference signal received power of the source serving cell further comprises:
and determining a candidate serving cell with reference signal received power larger than a first preset threshold value, and determining a target serving cell according to the candidate serving cell with reference signal received power larger than the first preset threshold value.
5. The method of claim 3 or 4, wherein the block error rate of the target serving cell is smaller than a second preset threshold.
6. The method of claim 1, wherein the switching the user terminal from the source serving cell to the target serving cell when the channel quality indicator and the resource utilization of the target serving cell satisfy preset decision conditions further comprises:
when the channel quality index of the target serving cell is greater than a third preset threshold and the resource utilization rate of the target serving cell is less than a fourth preset threshold;
and switching the user terminal from the source serving cell to the target serving cell.
7. The method according to claim 6, wherein the channel quality indicator of the source serving cell is smaller than a fifth preset threshold when the user terminal is handed over from the source serving cell to the target serving cell.
8. A serving cell switching apparatus, comprising:
the first acquisition module is suitable for acquiring the reference signal receiving power of a source service cell corresponding to the user terminal;
a determining module, adapted to determine candidate serving cells corresponding to the user equipment, and determine a target serving cell from the candidate serving cells according to the reference signal received power of the candidate serving cells and the reference signal received power of the source serving cell;
the second acquisition module is suitable for acquiring the channel quality index and the resource utilization rate of the target serving cell;
and the switching module is suitable for switching the user terminal from the source serving cell to the target serving cell when the channel quality index and the resource utilization rate of the target serving cell meet preset judgment conditions.
9. A computing device, comprising: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus;
the memory is configured to store at least one executable instruction, which causes the processor to perform operations corresponding to the serving cell handover method according to any one of claims 1 to 7.
10. A computer storage medium having stored thereon at least one executable instruction for causing a processor to perform operations corresponding to the serving cell handover method according to any one of claims 1 to 7.
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| CN115361715A (en) * | 2022-08-15 | 2022-11-18 | 中国联合网络通信集团有限公司 | Network resource switching method and device based on user terminal and base station |
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