CN112135299A - 5G physical cell identifier configuration method and device and terminal equipment - Google Patents
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Abstract
The embodiment of the invention discloses a method, a device and terminal equipment for configuring a 5G physical cell identifier, wherein the method comprises the steps of acquiring neighbor cell frequency point information, neighbor cell PCI and neighbor cell system information of each neighbor cell of a cell to be configured; filtering candidate PCIs in a PCI candidate list according to the neighbor frequency point information, the neighbor PCIs and the neighbor system information; and automatically configuring the PCI of the cell to be configured according to the remaining candidate PCI in the PCI candidate list. According to the technical scheme, on one hand, labor cost is reduced, on the other hand, PCI configuration efficiency is improved, and error rate is reduced.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a method and a device for configuring a 5G physical cell identifier and terminal equipment.
Background
The existing Physical Cell Identifier (PCI) allocation method mainly includes: manual distribution, centralized automatic distribution based on graph theory, distribution based on terminal measurement and report, and the like. However, these allocation methods not only require a lot of human resources, but also often have PCI conflict problem, thereby resulting in difficulty in network deployment, difficulty in obtaining network topology, complicated handover process, and great difficulty in operation and high labor cost.
Disclosure of Invention
In view of the above problems, the present invention provides a method, an apparatus and a terminal device for configuring a 5G physical cell identifier.
One embodiment of the present invention provides a method for configuring a 5G physical cell identifier, where the method includes:
acquiring neighbor cell frequency point information, neighbor cell PCI and neighbor cell system information of each neighbor cell of a cell to be configured;
filtering candidate PCIs in a PCI candidate list according to the neighbor frequency point information, the neighbor PCIs and the neighbor system information;
and configuring the PCI of the cell to be configured according to the remaining candidate PCI in the PCI candidate list.
The method for configuring a 5G physical cell identifier according to another embodiment of the present invention filters candidate PCIs in the PCI candidate list, and includes:
and filtering and removing the PCI of the same-frequency neighbor cell from the PCI candidate list according to the neighbor cell frequency point information and the PCI of the neighbor cell.
The above configuration method for the 5G physical cell identifier further includes:
obtaining same-frequency neighbor cell system information according to the neighbor cell frequency point information and the neighbor cell system information;
acquiring the PCI of the same-frequency neighboring cells corresponding to each same-frequency neighboring cell from the system information of the same-frequency neighboring cells;
and filtering and removing the PCI of the same-frequency adjacent regions corresponding to the PCI candidate list.
The above configuration method for the 5G physical cell identifier further includes:
acquiring pilot frequency adjacent cell system information according to the adjacent cell frequency point information and the adjacent cell system information;
acquiring the PCI of the neighbor cell of each pilot frequency neighbor cell with the same frequency as the cell to be configured from the pilot frequency neighbor cell system information;
and filtering and removing the PCIs of the adjacent cells with the same frequency as the cell to be configured in each pilot frequency adjacent cell from the PCI candidate list.
The above configuration method for the 5G physical cell identifier further includes:
obtaining a first modulus result of each remaining candidate PCI in the PCI candidate list to a preset parameter;
acquiring a second modulus result of the PCI of the same-frequency adjacent cell to the preset parameter;
filtering the PCIs with the first modulus result and the second modulus result which are the same from the PCI candidate list.
In the above configuration method for the 5G physical cell identifier, the preset parameters include 3, 4 and 30.
A further embodiment of the present invention provides a 5G physical cell identifier configuration apparatus, including:
the neighbor cell information acquisition module is used for acquiring neighbor cell frequency point information, neighbor cell PCI and neighbor cell system information of each neighbor cell of the cell to be configured;
the PCI filtering module is used for filtering the candidate PCI in the PCI candidate list according to the adjacent cell frequency point information, the adjacent cell PCI and the adjacent cell system information;
and the PCI configuration module is used for configuring the PCI of the cell to be configured according to the residual candidate PCI in the PCI candidate list.
The embodiment of the invention relates to a terminal device, which comprises a memory and a processor, wherein the memory is used for storing a computer program, and the computer program executes the above 5G physical cell identity configuration method when running on the processor.
The terminal device includes a base station.
The embodiment of the invention relates to a readable storage medium, which stores a computer program, and the computer program executes the above 5G physical cell identity configuration method when running on a processor.
When PCI is configured for a cell, acquiring neighbor frequency point information, PCI and neighbor system information of each neighbor of the cell to be configured; filtering candidate PCIs in a PCI candidate list according to the neighbor frequency point information, the neighbor PCIs and the neighbor system information; and automatically configuring the PCI of the cell to be configured according to the remaining candidate PCI in the PCI candidate list. According to the technical scheme, on one hand, labor cost is reduced, on the other hand, PCI configuration efficiency is improved, and error rate is reduced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. Like components are numbered similarly in the various figures.
Fig. 1 is a schematic flowchart illustrating a method for configuring a 5G physical cell identifier according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating another 5G physical cell identity configuration method according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a physical cell identity configuration for avoiding PCI collision according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a physical cell identity configuration for avoiding PCI confusion according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating another physical cell identity configuration for avoiding PCI confusion according to an embodiment of the present invention;
fig. 6 shows a schematic structural diagram of a 5G physical cell identity configuration apparatus according to an embodiment of the present invention.
Description of the main element symbols:
1-5G physical cell identification configuration device; 100-a neighbor cell information acquisition module; 200-PCI filter module; 300-PCI configuration module.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present invention, are only intended to indicate specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
PCI is a key parameter of wireless communication systems, and 1008 PCIs are defined in 5G systems, and each cell is required to avoid PCI collision when selecting the PCI. PCI conflicts include PCI collisions (Collision) and PCI Confusion (Confusion). The PCI collision indicates that the PCIs of two adjacent cells a and B are the same, and a User Equipment (UE) can simultaneously receive signals of the two cells in an overlapping area of the two cells, so that the probability of handover failure and disconnection of the UE in the area is increased due to the same PCIs of the UE; PCI confusion means that the PCIs of two (B and C) or more neighboring cells with the same frequency as cell a are the same, which leads to UE handover failure and dropped call due to the same PCIs of A, B and C.
The invention discloses a 5G physical cell identifier configuration method, which comprises the steps of acquiring adjacent cell frequency point information, adjacent cell PCI and adjacent cell system information of each adjacent cell of a cell to be configured through air interface interception when configuring PCI for the cell; filtering candidate PCIs in a PCI candidate list according to the neighbor frequency point information, the neighbor PCIs and the neighbor system information; and automatically configuring the PCI of the cell to be configured according to the remaining candidate PCI in the PCI candidate list. On one hand, labor cost is reduced, on the other hand, PCI configuration efficiency is improved, and error rate is reduced.
Example 1
In this embodiment, referring to fig. 1, it is shown that a method for configuring a 5G physical cell identifier includes the following steps:
s100: and acquiring the neighbor frequency point information, the neighbor PCI and the neighbor system information of each neighbor of the cell to be configured.
And allocating the PCI to the cell, namely allocating the PCI to the base station corresponding to the cell, and searching the neighbor cell frequency point information, the neighbor cell PCI and the neighbor cell system information of each neighbor cell by the base station through air interface interception, namely enabling the base station to use the neighbor cell frequency point information, the neighbor cell PCI and the neighbor cell system information of each neighbor cell base station through the neighbor base station.
It is understood that the system information in the 5g (nr) network includes MIB and SIB, which are basically the same as the LTE network except for different transmission periods; another difference is that the SIB messages in 5g (nr) are not broadcast periodically; the SIB messages in 5g (nr) have two types, one is periodically broadcast, and the other is transmitted according to the UE request.
S200: and filtering the candidate PCI in the PCI candidate list according to the adjacent cell frequency point information, the adjacent cell PCI and the adjacent cell system information.
When the network planning is carried out in the 5G network, a group of PCIs (physical cell identifiers) are planned for the cells with the same frequency to serve as a PCI candidate list, and the candidate PCIs in the PCI candidate list are filtered according to the adjacent cell frequency point information, the adjacent cell PCIs and the adjacent cell system information; if the PCI candidate list is not planned in advance, 1008 PCIs are used as the candidate list, and the candidate PCIs in the PCI candidate list are filtered according to the adjacent region frequency point information, the adjacent region PCIs and the adjacent region system information.
S300: and configuring the PCI of the cell to be configured according to the remaining candidate PCI in the PCI candidate list.
And selecting proper PCI from the remaining candidate PCI in the PCI candidate list, and if the proper PCI cannot be selected, reporting an alarm to a network management side for processing.
In this embodiment, when configuring a PCI for a cell, neighboring cell frequency point information, a neighboring cell PCI, and neighboring cell system information of each neighboring cell of the cell to be configured are obtained through air interface interception; filtering candidate PCIs in a PCI candidate list according to the neighbor frequency point information, the neighbor PCIs and the neighbor system information; and automatically configuring the PCI of the cell to be configured according to the remaining candidate PCI in the PCI candidate list. On one hand, labor cost is reduced, on the other hand, PCI configuration efficiency is improved, and error rate is reduced. The technical scheme of the embodiment can avoid PCI conflict, improve the switching success rate, reduce the call drop rate caused by abnormal switching, and improve the user satisfaction of the 5G network.
Example 2
In this embodiment, referring to fig. 2, a method for configuring a 5G physical cell identifier includes the following steps:
s10: and acquiring the neighbor frequency point information, the neighbor PCI and the neighbor system information of each neighbor of the cell to be configured.
S20: and filtering and removing the PCI of the same-frequency neighbor cell from the PCI candidate list according to the neighbor cell frequency point information and the PCI of the pilot cell.
After performing S20, filtering the partial PCI from the PCI candidate list, in which case S30 is required: it is determined whether the PCI candidate list is empty. That is, after the partial PCI is determined to be filtered, whether there is a candidate PCI in the PCI candidate list is determined, and if the PCI candidate list is empty, S80 is executed: reporting an alarm; if the PCI candidate list is not empty, S40 is performed.
S40: and filtering the PCI of the same-frequency neighbor cell corresponding to each same-frequency neighbor cell from the PCI candidate list according to the neighbor cell frequency point information and the same-frequency neighbor cell system information in the neighbor cell system information.
After performing S40, filtering the partial PCI from the PCI candidate list, in which case S30 is required: it is determined whether the PCI candidate list is empty. That is, after the partial PCI is filtered, whether there is a candidate PCI in the PCI candidate list is determined, and if the PCI candidate list is empty, S80 is executed: reporting an alarm; if the PCI candidate list is not empty, S50 is performed.
S50: and filtering the PCI of the adjacent cell with the same frequency as the cell to be configured in each pilot frequency adjacent cell from the PCI candidate list according to the pilot frequency adjacent cell frequency point information and the pilot frequency adjacent cell system information in the adjacent cell system information.
After performing S50, filtering the partial PCI from the PCI candidate list, in which case S30 is required: it is determined whether the PCI candidate list is empty. That is, after the partial PCI is filtered, whether there is a candidate PCI in the PCI candidate list is determined, and if the PCI candidate list is empty, S80 is executed: reporting an alarm; if the PCI candidate list is not empty, S60 is performed.
S60: and filtering the PCIs with the same modulus result of the candidate PCIs on the preset parameters as that of the PCIs in the adjacent regions from the PCI candidate list.
After performing S60, filtering the partial PCI from the PCI candidate list, in which case S30 is required: it is determined whether the PCI candidate list is empty. That is, after the partial PCI is filtered, whether there is a candidate PCI in the PCI candidate list is determined, and if the PCI candidate list is empty, S80 is executed: reporting an alarm; if the PCI candidate list is not empty, S70 is performed.
S70: and configuring the PCI of the cell to be configured according to the remaining candidate PCI in the PCI candidate list.
It is understood that the order of the above steps S20, S40, S50 and S60 may be changed. Preferably, the filtration is performed in the order of S20, S40, S50 and S60, so that the filtration efficiency is higher and the filtration effect is better.
Further, as shown in fig. 3, Q1 represents a cell to be configured, and Q1 represents an intra-frequency neighboring cell of the cell to be configured. S20 can avoid PCI collision of neighboring co-frequency cells, wherein S20 includes: determining adjacent cell same frequency points which are the same as the frequency points of the cell to be configured from the adjacent cell frequency point information of all the adjacent cells; determining adjacent cell PCI corresponding to the same-frequency point of each adjacent cell; and filtering the candidate PCI which is the same as the corresponding neighbor PCI from the PCI candidate list.
Further, as shown in fig. 4, Q1 represents a cell to be configured, Q2 represents an intra-frequency neighboring cell of the cell to be configured, and Q3 represents an intra-frequency neighboring cell of an intra-frequency neighboring cell Q2 of the cell Q1 to be configured. S40 can avoid PCI confusion, and avoid that the PCI of the cell to be configured is the same as the same-frequency adjacent cell of the same-frequency adjacent cell. Wherein S40 includes: obtaining same-frequency neighbor cell system information SIB3 according to the neighbor cell frequency point information and the neighbor cell system information; acquiring the PCI of the same-frequency neighboring cells corresponding to each same-frequency neighboring cell from the system information of the same-frequency neighboring cells; and filtering and removing the PCI of the same-frequency adjacent regions corresponding to the PCI candidate list.
Further, as shown in fig. 5, Q1 represents a cell to be configured, Q4 represents a pilot frequency neighboring cell of the cell to be configured, and Q5 represents a neighboring cell of the pilot frequency neighboring cell Q4 that has the same frequency as the cell Q1 to be configured. S50 may also avoid PCI confusion, and avoid that the PCI of the cell to be configured is the same as the PCI of the neighboring cell in the pilot frequency neighboring cell when the frequency of the cell to be configured is the same as the neighboring cell frequency of the pilot frequency neighboring cell. Wherein S50 includes: obtaining pilot frequency neighbor cell system information SIB4 according to the neighbor cell frequency point information and the neighbor cell system information; acquiring the PCI of the neighbor cell of each pilot frequency neighbor cell with the same frequency as the cell to be configured from the pilot frequency neighbor cell system information; and filtering and removing the PCIs of the adjacent cells with the same frequency as the cell to be configured in each pilot frequency adjacent cell from the PCI candidate list.
Further, S60 includes: obtaining a first modulus result of each remaining candidate PCI in the PCI candidate list to a preset parameter; acquiring a second modulus result of the PCI of the same-frequency adjacent cell to the preset parameter; filtering the PCIs with the first modulus result and the second modulus result which are the same from the PCI candidate list. Wherein the preset parameters include 3, 4 and 30.
Because the terminal is influenced to receive a Primary Synchronization Signal (PSS) when the modulo result of the PCI of the cell to be configured is the same as the modulo result of the PCI of the adjacent cell with the same frequency (co-frequency) 3, the first modulo operation can be performed on each remaining candidate PCI in the PCI candidate list, and the first modulo operation is the modulo of the candidate PCI to 3; performing first modular operation on the PCI of the adjacent region; and filtering the candidate PCIs with the same first modulo operation result from the PCI candidate list.
Because the DeModulation Reference Signal (DMRS) interference of the Physical Broadcast Channel (PBCH) may be caused when the modulo result of the PCI of the cell to be configured and the PCI of the adjacent cell with the same frequency is the same as the modulo result of the 4, the second modulo operation may be performed on each remaining candidate PCI in the PCI candidate list, and the second modulo operation is the modulo of the candidate PCI to the 4; performing second modular operation on the PCI of the adjacent region; and filtering the candidate PCIs with the same second modulo operation result from the PCI candidate list.
Because when the modulo result of the PCI of the cell to be configured and the PCI of the adjacent cell of the same frequency are the same, the demodulation Reference Signal interference of the uplink physical control channel (PUCCH) and the uplink physical shared channel (PUSCH) can be caused, and the Sounding Reference Signal (SRS) interference can also be caused, the third modulo operation can be performed on each remaining candidate PCI in the PCI candidate list, and the third modulo operation is the modulo of the candidate PCI to 30; performing a third modular operation on the PCI of the adjacent region; and filtering the candidate PCIs with the same third modulo operation result from the PCI candidate list.
Exemplarily, when the PCI of the co-frequency neighboring cell to be configured is 7 and the modulo result of 3 is 1, the candidate PCIs with the modulo result of 3 being 1 are filtered from the remaining candidate PCIs in the PCI candidate list.
Example 3
In this embodiment, referring to fig. 6, a 5G physical cell identifier configuration apparatus 1 includes: a neighbor cell information obtaining module 100, a PCI filtering module 200, and a PCI configuring module 300.
A neighboring cell information obtaining module 100, configured to obtain neighboring cell frequency point information, a neighboring cell PCI, and neighboring cell system information of each neighboring cell of a cell to be configured; a PCI filtering module 200, configured to filter candidate PCIs in a PCI candidate list according to the neighboring cell frequency point information, the neighboring cell PCIs, and the neighboring cell system information; a PCI configuring module 300, configured to configure the PCIs of the cell to be configured according to the remaining candidate PCIs in the PCI candidate list.
The 5G physical cell identifier configuration apparatus 1 disclosed in this embodiment is configured to execute the method for configuring a 5G physical cell identifier according to the foregoing embodiment through the cooperation of the neighboring cell information obtaining module 100, the PCI filtering module 200, and the PCI configuring module 300, and the implementation and beneficial effects related to the foregoing embodiment are also applicable in this embodiment, and are not described herein again.
It is to be understood that the present invention relates to a terminal device, which includes a memory and a processor, where the memory is used to store a computer program, and the computer program, when running on the processor, executes the method for configuring a 5G physical cell identifier according to the present invention.
It is to be understood that the terminal device comprises a 5G base station.
It is to be understood that the present invention relates to a readable storage medium, which stores a computer program, and when the computer program is run on a processor, the computer program performs the method for configuring a 5G physical cell identifier according to the present invention.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part of the technical solution that contributes to the prior art in essence can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to 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.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (10)
1. A method for configuring a 5G Physical Cell Identifier (PCI), the method comprising:
acquiring neighbor cell frequency point information, neighbor cell PCI and neighbor cell system information of each neighbor cell of a cell to be configured;
filtering candidate PCIs in a PCI candidate list according to the neighbor frequency point information, the neighbor PCIs and the neighbor system information;
and configuring the PCI of the cell to be configured according to the remaining candidate PCI in the PCI candidate list.
2. The method of claim 1, wherein filtering the candidate PCIs in the PCI candidate list comprises:
and filtering and removing the PCI of the same-frequency neighbor cell from the PCI candidate list according to the neighbor cell frequency point information and the PCI of the neighbor cell.
3. The method of claim 2, further comprising:
obtaining same-frequency neighbor cell system information according to the neighbor cell frequency point information and the neighbor cell system information;
acquiring the PCI of the same-frequency neighboring cells corresponding to each same-frequency neighboring cell from the system information of the same-frequency neighboring cells;
and filtering and removing the PCI of the same-frequency adjacent regions corresponding to the PCI candidate list.
4. The method of claim 2, further comprising:
acquiring pilot frequency adjacent cell system information according to the adjacent cell frequency point information and the adjacent cell system information;
acquiring the PCI of the neighbor cell of each pilot frequency neighbor cell with the same frequency as the cell to be configured from the pilot frequency neighbor cell system information;
and filtering and removing the PCIs of the adjacent cells with the same frequency as the cell to be configured in each pilot frequency adjacent cell from the PCI candidate list.
5. The method of claim 2, further comprising:
obtaining a first modulus result of each remaining candidate PCI in the PCI candidate list to a preset parameter;
acquiring a second modulus result of the PCI of the same-frequency adjacent cell to the preset parameter;
filtering the PCIs with the first modulus result and the second modulus result which are the same from the PCI candidate list.
6. The method of claim 5G physical cell identity configuration, in which the preset parameters comprise 3, 4 and 30.
7. A 5G physical cell identity configuration apparatus, comprising:
the neighbor cell information acquisition module is used for acquiring neighbor cell frequency point information, neighbor cell PCI and neighbor cell system information of each neighbor cell of the cell to be configured;
the PCI filtering module is used for filtering the candidate PCI in the PCI candidate list according to the adjacent cell frequency point information, the adjacent cell PCI and the adjacent cell system information;
and the PCI configuration module is used for configuring the PCI of the cell to be configured according to the residual candidate PCI in the PCI candidate list.
8. A terminal device comprising a memory and a processor, the memory being configured to store a computer program which, when run on the processor, performs the 5G physical cell identity configuration method of any of claims 1 to 6.
9. The terminal device of claim 8, wherein the terminal device comprises a base station.
10. A readable storage medium, characterized in that it stores a computer program which, when run on a processor, performs the 5G physical cell identity configuration method of any of claims 1 to 6.
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| 吴越: ""4G LTE网络规划之PRACH规划以及邻区规划和PCI规划"" * |
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Application publication date: 20201225 |