CN114205861B - Method for reducing cell reference signal interference, base station and computing equipment - Google Patents
Method for reducing cell reference signal interference, base station and computing equipment Download PDFInfo
- Publication number
- CN114205861B CN114205861B CN202010908465.2A CN202010908465A CN114205861B CN 114205861 B CN114205861 B CN 114205861B CN 202010908465 A CN202010908465 A CN 202010908465A CN 114205861 B CN114205861 B CN 114205861B
- Authority
- CN
- China
- Prior art keywords
- cell
- level value
- reference signal
- terminal user
- adjacent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
Abstract
The embodiment of the invention relates to the technical field of communication, and discloses a method for reducing cell reference signal interference, a base station and computing equipment, wherein the method comprises the following steps: acquiring a measurement report periodically reported by a terminal user; after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report; and notifying the time-frequency resource information distributed by the terminal user in the semi-static scheduling period to the adjacent cell so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource. By the mode, the embodiment of the invention can stagger the time-frequency positions of the reference signals of the adjacent cells, and reduce the interference received by the CRS signals of the serving cells received by the terminal user.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method for reducing cell reference signal interference, a base station and computing equipment.
Background
Various downlink reference information are defined in long term evolution (Long Term Evolution, LTE), where Cell-specific reference signals (Cell-specific reference signal, CRS) are valid for all end Users (UEs) within a Cell, the roles of which include: channel estimation of the downlink physical channel and assisting the UE in demodulating the downlink traffic channel. For the same-frequency cell, when the peripheral component interconnect standard (Peripheral Component Interconnect, PCI) mode 3 is the same, the CRS time-frequency positions of the two cells are identical. In the area where the two cells overlap, the CRS of the serving cell of the end user will be interfered by the neighboring cells, which affects the estimation of the channel quality and the demodulation of the service data of the end user.
Currently, PCI (peripheral component interconnect) modules 3 of neighboring cells are staggered as much as possible by planning/optimizing PCI to avoid interference between Reference Signals (RSs). Regardless of the presence or absence of traffic data, CRS signals of all cells are always transmitted, so that CRS interference is most serious by CRS at a time-frequency position. If 4 same-frequency cells are covered in the same area, at least two cells PCI model 3 are the same, and if the UE occupies one of the two cells in the area, the RS signal of the serving cell is interfered by the RS of the adjacent cell. The prior PCI model 3 planning method can not completely achieve the purpose of 'staggering the RS time-frequency positions of adjacent cells'.
Disclosure of Invention
In view of the foregoing, embodiments of the present invention provide a method, a base station, and a computing device for reducing cell reference signal interference, which overcome or at least partially solve the foregoing problems.
According to an aspect of an embodiment of the present invention, there is provided a method for reducing interference of a cell reference signal, the method including: acquiring a measurement report periodically reported by a terminal user; after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report; and notifying the time-frequency resource information distributed by the terminal user in the semi-static scheduling period to the adjacent cell so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource.
In an optional manner, the detecting, according to the measurement report, a neighboring cell with the serving cell and having cell reference signal interference with the serving cell and having the same frequency and the same PCI mode 3 of the terminal user includes: and if the level value of the same-frequency neighbor cell adjacent to the service cell and the level value of the service cell are detected to meet the preset condition, and the neighbor cell is identical to the PCI module 3 of the service cell, determining that the neighbor cell is the neighbor cell interfering with the reference signal of the service cell.
In an optional manner, the detecting that the level value of the co-frequency neighboring cell adjacent to the serving cell and the level value of the serving cell meet a preset condition includes: and detecting that the difference value between the level value of the adjacent cell and the level value of the service cell in the continuous first preset number of measurement reports is within 3db, or that the level value of the adjacent cell is larger than the level value of the service cell.
In an optional manner, the notifying the adjacent cell of the time-frequency resource information allocated by the end user in the semi-static scheduling period includes: if the service cell and the neighbor cell are not in the same base station, notifying the base station where the neighbor cell is located of time-frequency resource information distributed by the terminal user in a semi-static scheduling period through an X2 interface.
According to another aspect of an embodiment of the present invention, there is provided a base station for reducing cell reference signal interference, the first base station including: a measurement report acquisition unit, configured to acquire a measurement report periodically reported by the terminal user; the interference detection unit is used for detecting the adjacent cells with the same frequency as the PCI module 3 of the serving cell of the terminal user, which have the cell reference signal interference with the serving cell, according to the measurement report after the terminal user enters the semi-static scheduling; and the information sending unit is used for informing the adjacent cell of the time-frequency resource information distributed by the terminal user in the semi-static scheduling period so that the base station where the adjacent cell is located stops sending the cell reference signal of the time-frequency resource.
According to still another aspect of the embodiment of the present invention, there is provided a method for reducing interference of a cell reference signal, the method including: the base station of the current cell receives time-frequency resource information distributed by the terminal user in a semi-static scheduling period and sent by the base station of the service cell of the terminal user, wherein the current cell is a neighboring cell which has cell reference signal interference with the service cell of the terminal user and has the same frequency as the service cell and the same PCI module 3; and stopping transmitting the cell reference signal of the time-frequency resource in the semi-static scheduling period.
In an optional manner, the stopping sending the cell reference signal of the time-frequency resource in the semi-static scheduling period includes: reducing the scheduling priority of the time-frequency resource in a semi-static scheduling period; and stopping the transmission of the cell reference signal at the time when no service is scheduled.
According to another aspect of an embodiment of the present invention, there is provided a second base station for reducing cell reference signal interference, the second base station including: the information receiving unit is used for receiving time-frequency resource information distributed by the terminal user in a semi-static scheduling period and transmitted by a base station where a serving cell of the terminal user is located by a base station where the current cell is located, wherein the current cell is a neighboring cell which has cell reference signal interference with the serving cell of the terminal user and has the same frequency as the serving cell and the same PCI module 3; and the resource scheduling unit is used for stopping transmitting the cell reference signal of the time-frequency resource in the semi-static scheduling period.
According to another aspect of an embodiment of the present invention, there is provided a computing device including: the device comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete communication with each other through the communication bus;
The memory is configured to store at least one executable instruction that causes the processor to perform the steps of the method for reducing cell reference signal interference described above.
According to yet another aspect of the embodiments of the present invention, there is provided a computer storage medium having stored therein at least one executable instruction for causing the processor to perform the steps of the above method for reducing cell reference signal interference.
According to the embodiment of the invention, the measurement report periodically reported by the terminal user is obtained; after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report; and notifying the adjacent cell of the time-frequency resource information distributed by the terminal user in the semi-static scheduling period so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource, the time-frequency positions of the reference signals of the adjacent cells can be staggered, and the interference of the CRS signal of the serving cell received by the terminal user is reduced.
The foregoing description is only an overview of the technical solutions of the embodiments of the present invention, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present invention can be more clearly understood, and the following specific embodiments of the present invention are given for clarity and understanding.
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 designate like parts throughout the figures. In the drawings:
fig. 1 is a flow chart illustrating a method for reducing cell reference signal interference according to an embodiment of the present invention;
fig. 2 is a flow chart illustrating another method for reducing interference of cell reference signals according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first base station for reducing cell reference signal interference according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second base station for reducing cell reference signal interference according to an embodiment of the present invention;
FIG. 5 illustrates a schematic diagram of a computing device provided by an embodiment of the present invention;
FIG. 6 illustrates a schematic diagram of a further computing device provided by an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention 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 invention to those skilled in the art.
Fig. 1 is a flow chart illustrating a method for reducing cell reference signal interference according to an embodiment of the present invention. The method for reducing the cell reference signal interference is applied to a base station where a serving cell of a terminal user is located, as shown in fig. 1, and comprises the following steps:
step S11: and acquiring a measurement report periodically reported by the terminal user.
Specifically, the end user periodically reports a measurement report (MeasurementReport, MR) to a base station where the serving cell of the end user is located, where the measurement report includes multiple downlink reference information. And the base station where the serving cell of the terminal user is located receives the measurement report.
Step S12: and after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as the serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report.
In the embodiment of the invention, after a user enters semi-static scheduling, a base station of a service cell of a terminal user starts to detect a periodic measurement report MR recently reported by the user, and if the level value of a same-frequency neighbor cell adjacent to the service cell is detected to meet a preset condition with the level value of the service cell and the neighbor cell is the same as PCI (physical cell) module 3 of the service cell, the neighbor cell is determined to be a neighbor cell interfering with a reference signal of the service cell. The preset condition is that the level value of a certain same-frequency neighbor cell in the periodically continuous multiple MRs reported by the UE is close to the level value of the serving cell of the UE, namely that the difference value between the level value of the neighbor cell and the level value of the serving cell in the continuous first preset number of measurement reports is detected to be within 3db, or the level value of the neighbor cell is larger than the level value of the serving cell. The first preset number is preferably 5, but may be set to other numbers in other embodiments of the present invention, which is not limited herein.
Step S13: and notifying the time-frequency resource information distributed by the terminal user in the semi-static scheduling period to the adjacent cell so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource.
In the embodiment of the present invention, if the difference between the level value of a certain neighboring cell and the level value of a serving cell in the continuous first preset number of measurement reports is within 3db, or the level value of the neighboring cell is greater than the level value of the serving cell, and the neighboring cell is the same as the PCI module 3 of the serving cell, the time-frequency resource information allocated by the terminal user in the semi-static scheduling period is notified to the base station where the neighboring cell is located. Specifically, if the serving cell and the neighbor cell are not in the same base station, notifying the base station where the neighbor cell is located of time-frequency resource information allocated by the terminal user in a semi-static scheduling period through an X2 interface. If the service cell and the neighbor cell are in the same base station, the base station can directly acquire the time-frequency resource information distributed by the terminal user in the semi-static scheduling period. After the base station where the neighbor cell is located obtains the time-frequency resource information distributed by the terminal user in the semi-static scheduling period, stopping transmitting the cell reference signal of the time-frequency resource in the semi-static scheduling period of the UE, specifically, reducing the scheduling priority of the time-frequency resource of the part in the semi-static scheduling period of the UE, and stopping transmitting the CRS for the time without service scheduling for the part of time-frequency resource. Therefore, the interference to the CRS of the UE can be reduced by stopping transmission of part of the CRS of the neighbor cell, and compared with the traditional technology, the same-frequency PCI (peripheral component interconnect) module 3 interference problem of part of special scenes is solved.
In the embodiment of the invention, when the UE enters the semi-static scheduling, the same frequency is used for the resources occupied by the UE in the semi-static scheduling period, the PCI mode 3 is the same, the level intensity of the position of the UE is close to or larger than that of the neighbor cell of the serving cell, the part of time-frequency resources are not used as much as possible, and when the part of time-frequency resources are not used for sending service data, the CRS signals of the part of resources are also stopped, so that the interference to the CRS of the UE is reduced.
The following are illustrated: under the cell a, the UE1 starts semi-persistent scheduling. If UE1 enters semi-persistent scheduling, during a certain period of continuous time, the a cell allocates physical resource blocks (physical resource block, PRB) PRB0 to PRB4 to UE1, and the base station where the a cell is located starts to detect the difference between the level values of all neighboring cells with the same frequency and the same PCI mode 3 and the level value of the serving cell (a cell) of the UE in the periodic MR reported in 10 minutes (adjustable) recently by UE 1. If a neighboring cell B, which is of a same frequency and has the same PCI modulo 3, continuously 5 (adjustable) MRs satisfy the "neighboring cell (B cell) level value-serving cell (a cell) level value" > -3db, the ENB where the a cell is located notifies the B cell to perform the following: the base station of the B cell is in a semi-static scheduling period of the UE1, the resources of PRB0-PRB4 are not scheduled as much as possible, the priority of the resources of PRB0-PRB4 can be adjusted to be the lowest, meanwhile, when the base station of the B cell is controlled to not schedule the service data, the base station of the B cell stops the CRS signal transmission in the resources of PRB0-PRB4, and the interference to the UE is reduced.
According to the embodiment of the invention, the measurement report periodically reported by the terminal user is obtained; after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report; and notifying the adjacent cell of the time-frequency resource information distributed by the terminal user in the semi-static scheduling period so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource, the time-frequency positions of the reference signals of the adjacent cells can be staggered, and the interference of the CRS signal of the serving cell received by the terminal user is reduced.
Fig. 2 is a flow chart illustrating a method for reducing cell reference signal interference according to an embodiment of the present invention. The method for reducing the interference of the cell reference signal is applied to the base station where the adjacent cell adjacent to the service cell of the terminal user is located, as shown in fig. 2, and the method for reducing the interference of the cell reference signal comprises the following steps:
step S21: the base station of the current cell receives time-frequency resource information distributed by the terminal user in a semi-static scheduling period and sent by the base station of the service cell of the terminal user, wherein the current cell is a neighboring cell which has cell reference signal interference with the service cell of the terminal user and has the same frequency as the service cell and the same PCI module 3.
In the embodiment of the invention, when the base station of the serving cell of the terminal user detects that the difference between the level value of the current cell and the level value of the serving cell in the continuous first preset number of measurement reports reported by the UE is within 3db or the level value of the current cell is larger than the level value of the serving cell and the current cell is identical to the PCI model 3 of the serving cell, the base station of the serving cell of the terminal user informs that the current cell is adjacent to the serving cell of the terminal user by indicating that the current cell is the cell reference signal interference with the serving cell of the terminal user and is adjacent to the serving cell with the same frequency as the PCI model 3 of the serving cell, and the base station of the serving cell of the terminal user informs the time-frequency resource information distributed by the terminal user in the semi-static scheduling period. And the base station of the current cell receives the time-frequency resource information.
Step S22: and stopping transmitting the cell reference signal of the time-frequency resource in the semi-static scheduling period.
Specifically, after receiving time-frequency resource information, a base station in which a current cell is located reduces the scheduling priority of the time-frequency resource in a semi-static scheduling period; and stopping the transmission of the cell reference signal at the time when no service is scheduled for the part of time-frequency resources.
For the neighbor cell, the CRS is stopped only when the service data is not transmitted by the part of time-frequency resources, so that the analysis of the service data by the user is not influenced. In addition, since only CRS of a part of RPB resources are stopped, RS transmission of other PRB resources is not greatly affected on channel estimation. If it is conservative, to further reduce the impact on channel estimation accuracy, 1 condition can be added: when the PRB resources involved in the CRS-down include 5 (adjustable) or more consecutive PRB resources, the transmission of the reference signal of the cell is not started to be stopped.
In the embodiment of the present invention, the base station where the current cell is located and the base station where the serving cell of the terminal user is located may be the same. Thus, the method for reducing the interference of the cell reference signal in the previous two embodiments can be performed in a common base station where the serving cell and the neighboring cell are located.
The embodiment of the invention receives time-frequency resource information distributed by a terminal user in a semi-static scheduling period and sent by a base station where a service cell of the terminal user is located through a base station of a current cell, wherein the current cell is a neighboring cell which has cell reference signal interference with the service cell of the terminal user and has the same frequency as the service cell and the same PCI module 3; and stopping transmitting the cell reference signals of the time-frequency resources in the semi-static scheduling period, so that the time-frequency positions of the adjacent cell reference signals can be staggered, and the interference on the CRS signals of the serving cells received by the terminal user is reduced.
Fig. 3 is a schematic structural diagram of a first base station for reducing cell reference signal interference according to an embodiment of the present invention. As shown in fig. 3, the first base station is a base station where a serving cell of an end user is located, and the first base station for reducing interference of a cell reference signal includes: measurement report acquisition section 301, interference detection section 302, and information transmission section 303. Wherein:
the measurement report obtaining unit 301 is configured to obtain a measurement report periodically reported by the end user; the interference detection unit 302 is configured to detect, according to the measurement report, a neighboring cell with a common frequency and PCI mode 3 with a serving cell of the terminal user that has cell reference signal interference after the terminal user enters semi-static scheduling; the information sending unit 303 is configured to notify the neighboring cell of time-frequency resource information allocated by the terminal user in a semi-static scheduling period, so that a base station where the neighboring cell is located stops sending the cell reference signal of the time-frequency resource.
In an alternative way, the interference detection unit 302 is configured to: and if the level value of the same-frequency neighbor cell adjacent to the service cell and the level value of the service cell are detected to meet the preset condition, and the neighbor cell is identical to the PCI module 3 of the service cell, determining that the neighbor cell is the neighbor cell interfering with the reference signal of the service cell.
In an alternative way, the interference detection unit 302 is configured to: and detecting that the difference value between the level value of the adjacent cell and the level value of the service cell in the continuous first preset number of measurement reports is within 3db, or that the level value of the adjacent cell is larger than the level value of the service cell.
In an alternative manner, the information sending unit 303 is configured to: if the service cell and the neighbor cell are not in the same base station, notifying the base station where the neighbor cell is located of time-frequency resource information distributed by the terminal user in a semi-static scheduling period through an X2 interface.
According to the embodiment of the invention, the measurement report periodically reported by the terminal user is obtained; after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report; and notifying the adjacent cell of the time-frequency resource information distributed by the terminal user in the semi-static scheduling period so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource, the time-frequency positions of the reference signals of the adjacent cells can be staggered, and the interference of the CRS signal of the serving cell received by the terminal user is reduced.
Fig. 4 is a schematic structural diagram of a second base station for reducing cell reference signal interference according to an embodiment of the present invention. As shown in fig. 4, the second base station is a base station where a neighboring cell adjacent to a serving cell of the end user is located, and may be the same base station as the first base station or may be a different base station, where the second base station for reducing interference of a cell reference signal includes: an information receiving unit 401 and a resource scheduling unit 402. Wherein:
the information receiving unit 401 is configured to receive, by using a base station where a current cell is located, time-frequency resource information allocated in a semi-static scheduling period by a terminal user and sent by a base station where a serving cell of the terminal user is located, where the current cell is a neighboring cell that has cell reference signal interference with the serving cell of the terminal user and has the same frequency as that of the serving cell and has the same PCI mode 3; the resource scheduling unit 402 is configured to stop transmitting the cell reference signal of the time-frequency resource in the semi-static scheduling period.
In an alternative way, the resource scheduling unit 402 is configured to: reducing the scheduling priority of the time-frequency resource in a semi-static scheduling period; and stopping the transmission of the cell reference signal at the time when no service is scheduled.
The embodiment of the invention receives time-frequency resource information distributed by a terminal user in a semi-static scheduling period and sent by a base station where a service cell of the terminal user is located through a base station of a current cell, wherein the current cell is a neighboring cell which has cell reference signal interference with the service cell of the terminal user and has the same frequency as the service cell and the same PCI module 3; and stopping transmitting the cell reference signals of the time-frequency resources in the semi-static scheduling period, so that the time-frequency positions of the adjacent cell reference signals can be staggered, and the interference on the CRS signals of the serving cells received by the terminal user is reduced.
Embodiments of the present invention provide a non-volatile computer storage medium storing at least one executable instruction for performing the method for reducing interference of a cell reference signal in any of the above method embodiments.
The executable instructions may be particularly useful for causing a processor to:
acquiring a measurement report periodically reported by a terminal user;
after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report;
and notifying the time-frequency resource information distributed by the terminal user in the semi-static scheduling period to the adjacent cell so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource.
In one alternative, the executable instructions cause the processor to:
and if the level value of the same-frequency neighbor cell adjacent to the service cell and the level value of the service cell are detected to meet the preset condition, and the neighbor cell is identical to the PCI module 3 of the service cell, determining that the neighbor cell is the neighbor cell interfering with the reference signal of the service cell.
In one alternative, the executable instructions cause the processor to:
and detecting that the difference value between the level value of the adjacent cell and the level value of the service cell in the continuous first preset number of measurement reports is within 3db, or that the level value of the adjacent cell is larger than the level value of the service cell.
In one alternative, the executable instructions cause the processor to:
if the service cell and the neighbor cell are not in the same base station, notifying the base station where the neighbor cell is located of time-frequency resource information distributed by the terminal user in a semi-static scheduling period through an X2 interface.
According to the embodiment of the invention, the measurement report periodically reported by the terminal user is obtained; after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report; and notifying the adjacent cell of the time-frequency resource information distributed by the terminal user in the semi-static scheduling period so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource, the time-frequency positions of the reference signals of the adjacent cells can be staggered, and the interference of the CRS signal of the serving cell received by the terminal user is reduced.
An embodiment of the present invention provides a further non-volatile computer storage medium storing at least one executable instruction for performing the method for reducing cell reference signal interference in any of the above-described method embodiments.
The executable instructions may be particularly useful for causing a processor to:
the base station of the current cell receives time-frequency resource information distributed by the terminal user in a semi-static scheduling period and sent by the base station of the service cell of the terminal user, wherein the current cell is a neighboring cell which has cell reference signal interference with the service cell of the terminal user and has the same frequency as the service cell and the same PCI module 3;
and stopping transmitting the cell reference signal of the time-frequency resource in the semi-static scheduling period.
In one alternative, the executable instructions cause the processor to:
reducing the scheduling priority of the time-frequency resource in a semi-static scheduling period;
and stopping the transmission of the cell reference signal at the time when no service is scheduled.
The embodiment of the invention receives time-frequency resource information distributed by a terminal user in a semi-static scheduling period and sent by a base station where a service cell of the terminal user is located through a base station of a current cell, wherein the current cell is a neighboring cell which has cell reference signal interference with the service cell of the terminal user and has the same frequency as the service cell and the same PCI module 3; and stopping transmitting the cell reference signals of the time-frequency resources in the semi-static scheduling period, so that the time-frequency positions of the adjacent cell reference signals can be staggered, and the interference on the CRS signals of the serving cells received by the terminal user is reduced.
Embodiments of the present invention provide a computer program product comprising a computer program stored on a computer storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the method of reducing cell reference signal interference in any of the method embodiments described above.
The executable instructions may be particularly useful for causing a processor to:
acquiring a measurement report periodically reported by a terminal user;
after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report;
and notifying the time-frequency resource information distributed by the terminal user in the semi-static scheduling period to the adjacent cell so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource.
In one alternative, the executable instructions cause the processor to:
and if the level value of the same-frequency neighbor cell adjacent to the service cell and the level value of the service cell are detected to meet the preset condition, and the neighbor cell is identical to the PCI module 3 of the service cell, determining that the neighbor cell is the neighbor cell interfering with the reference signal of the service cell.
In one alternative, the executable instructions cause the processor to:
and detecting that the difference value between the level value of the adjacent cell and the level value of the service cell in the continuous first preset number of measurement reports is within 3db, or that the level value of the adjacent cell is larger than the level value of the service cell.
In one alternative, the executable instructions cause the processor to:
if the service cell and the neighbor cell are not in the same base station, notifying the base station where the neighbor cell is located of time-frequency resource information distributed by the terminal user in a semi-static scheduling period through an X2 interface.
According to the embodiment of the invention, the measurement report periodically reported by the terminal user is obtained; after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report; and notifying the adjacent cell of the time-frequency resource information distributed by the terminal user in the semi-static scheduling period so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource, the time-frequency positions of the reference signals of the adjacent cells can be staggered, and the interference of the CRS signal of the serving cell received by the terminal user is reduced.
An embodiment of the present invention provides a further computer program product comprising a computer program stored on a computer storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the method of reducing cell reference signal interference in any of the method embodiments described above.
The executable instructions may be particularly useful for causing a processor to:
the base station of the current cell receives time-frequency resource information distributed by the terminal user in a semi-static scheduling period and sent by the base station of the service cell of the terminal user, wherein the current cell is a neighboring cell which has cell reference signal interference with the service cell of the terminal user and has the same frequency as the service cell and the same PCI module 3;
and stopping transmitting the cell reference signal of the time-frequency resource in the semi-static scheduling period.
In one alternative, the executable instructions cause the processor to:
reducing the scheduling priority of the time-frequency resource in a semi-static scheduling period;
and stopping the transmission of the cell reference signal at the time when no service is scheduled.
The embodiment of the invention receives time-frequency resource information distributed by a terminal user in a semi-static scheduling period and sent by a base station where a service cell of the terminal user is located through a base station of a current cell, wherein the current cell is a neighboring cell which has cell reference signal interference with the service cell of the terminal user and has the same frequency as the service cell and the same PCI module 3; and stopping transmitting the cell reference signals of the time-frequency resources in the semi-static scheduling period, so that the time-frequency positions of the adjacent cell reference signals can be staggered, and the interference on the CRS signals of the serving cells received by the terminal user is reduced.
FIG. 5 illustrates a schematic diagram of a computing device according to an embodiment of the present invention, and the embodiment of the present invention is not limited to the specific implementation of the device.
As shown in fig. 5, the computing device may include: a processor 502, a communication interface (Communications Interface) 504, a memory 506, and a communication bus 508.
Wherein: processor 502, communication interface 504, and memory 506 communicate with each other via communication bus 508. A communication interface 504 for communicating with network elements of other devices, such as clients or other servers. The processor 502 is configured to execute the program 510, and may specifically perform the relevant steps in the above-described method embodiment for reducing cell reference signal interference.
In particular, program 510 may include program code including computer-operating instructions.
The processor 502 may be a central processing unit CPU, or a specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement embodiments of the present invention. The device includes one or each processor, which may be the same type of processor, such as one or each CPU; but may also be different types of processors such as one or each CPU and one or each ASIC.
A memory 506 for storing a program 510. Memory 506 may comprise high-speed RAM memory or may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
The program 510 may be specifically operable to cause the processor 502 to:
acquiring a measurement report periodically reported by a terminal user;
after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report;
and notifying the time-frequency resource information distributed by the terminal user in the semi-static scheduling period to the adjacent cell so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource.
In one alternative, the executable instructions cause the processor to:
and if the level value of the same-frequency neighbor cell adjacent to the service cell and the level value of the service cell are detected to meet the preset condition, and the neighbor cell is identical to the PCI module 3 of the service cell, determining that the neighbor cell is the neighbor cell interfering with the reference signal of the service cell.
In one alternative, the executable instructions cause the processor to:
and detecting that the difference value between the level value of the adjacent cell and the level value of the service cell in the continuous first preset number of measurement reports is within 3db, or that the level value of the adjacent cell is larger than the level value of the service cell.
In one alternative, the executable instructions cause the processor to:
if the service cell and the neighbor cell are not in the same base station, notifying the base station where the neighbor cell is located of time-frequency resource information distributed by the terminal user in a semi-static scheduling period through an X2 interface.
According to the embodiment of the invention, the measurement report periodically reported by the terminal user is obtained; after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, wherein the neighboring cell has cell reference signal interference with the serving cell according to the measurement report; and notifying the adjacent cell of the time-frequency resource information distributed by the terminal user in the semi-static scheduling period so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource, the time-frequency positions of the reference signals of the adjacent cells can be staggered, and the interference of the CRS signal of the serving cell received by the terminal user is reduced.
FIG. 6 illustrates a schematic diagram of yet another computing device provided by embodiments of the present invention, the particular embodiments of the present invention not being limited to a particular implementation of the device.
As shown in fig. 6, the computing device may include: a processor 602, a communication interface 604, a memory 606, and a communication bus 608.
Wherein: processor 602, communication interface 604, and memory 606 perform communication with each other via communication bus 608. Communication interface 604 is used to communicate with network elements of other devices, such as clients or other servers. The processor 602 is configured to execute the program 610, and may specifically perform the relevant steps in the above-described method embodiment for reducing cell reference signal interference.
In particular, program 610 may include program code including computer-operating instructions.
The processor 602 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 device includes one or each processor, which may be the same type of processor, such as one or each CPU; but may also be different types of processors such as one or each CPU and one or each ASIC.
A memory 606 for storing a program 610. Memory 606 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk memory.
The program 610 may be specifically operable to cause the processor 602 to:
the base station of the current cell receives time-frequency resource information distributed by the terminal user in a semi-static scheduling period and sent by the base station of the service cell of the terminal user, wherein the current cell is a neighboring cell which has cell reference signal interference with the service cell of the terminal user and has the same frequency as the service cell and the same PCI module 3;
and stopping transmitting the cell reference signal of the time-frequency resource in the semi-static scheduling period.
In an alternative, the program 610 causes the processor to:
reducing the scheduling priority of the time-frequency resource in a semi-static scheduling period;
and stopping the transmission of the cell reference signal at the time when no service is scheduled.
The embodiment of the invention receives time-frequency resource information distributed by a terminal user in a semi-static scheduling period and sent by a base station where a service cell of the terminal user is located through a base station of a current cell, wherein the current cell is a neighboring cell which has cell reference signal interference with the service cell of the terminal user and has the same frequency as the service cell and the same PCI module 3; and stopping transmitting the cell reference signals of the time-frequency resources in the semi-static scheduling period, so that the time-frequency positions of the adjacent cell reference signals can be staggered, and the interference on the CRS signals of the serving cells received by the terminal user is reduced.
The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general-purpose systems may also be used with the teachings herein. The required structure for a construction of such a system is apparent from the description above. In addition, embodiments of the present invention are not directed to any particular programming language. It will be appreciated that the teachings of the present invention described herein may be implemented in a variety of programming languages, and the above description of specific languages is provided for disclosure of enablement and best mode of the present invention.
In the description provided herein, numerous specific details are set forth. However, it is understood 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 above description of exemplary embodiments of the invention, various features of the embodiments 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 construed as reflecting the intention that: i.e., the claimed invention requires more features than are expressly recited in each claim.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. 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. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units 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.
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 base stations, several of these base stations can be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specifically stated.
Claims (8)
1. A method of reducing cell reference signal interference, the method comprising:
acquiring a measurement report periodically reported by a terminal user;
after the terminal user enters semi-static scheduling, detecting a neighboring cell with the same frequency and the same PCI module 3 as a serving cell of the terminal user, which has cell reference signal interference, according to the measurement report, wherein the neighboring cell comprises: if the level value of the same-frequency adjacent cell adjacent to the service cell and the level value of the service cell are detected to meet the preset condition, and the adjacent cell is identical to the PCI module 3 of the service cell, determining that the adjacent cell is the adjacent cell interfering with the reference signal of the service cell; the detecting that the level value of the same-frequency neighboring cell adjacent to the service cell and the level value of the service cell meet the preset condition comprises the following steps: detecting that the difference value between the level value of the adjacent cell and the level value of the service cell in the continuous first preset number of measurement reports is within 3db, or that the level value of the adjacent cell is larger than the level value of the service cell;
and notifying the time-frequency resource information distributed by the terminal user in the semi-static scheduling period to the adjacent cell so that the base station of the adjacent cell stops transmitting the cell reference signal of the time-frequency resource.
2. The method of claim 1, wherein said informing the neighbor cell of the time-frequency resource information allocated by the end user during the semi-persistent scheduling period comprises:
if the service cell and the neighbor cell are not in the same base station, notifying the base station where the neighbor cell is located of time-frequency resource information distributed by the terminal user in a semi-static scheduling period through an X2 interface.
3. A first base station for reducing cell reference signal interference, the first base station comprising:
the measurement report acquisition unit is used for acquiring a measurement report periodically reported by a terminal user;
the interference detection unit is used for detecting the adjacent cell with the same frequency as PCI module 3 of the serving cell of the terminal user, which has the cell reference signal interference with the serving cell, according to the measurement report after the terminal user enters the semi-static scheduling, and comprises the following steps: if the level value of the same-frequency adjacent cell adjacent to the service cell and the level value of the service cell are detected to meet the preset condition, and the adjacent cell is identical to the PCI module 3 of the service cell, determining that the adjacent cell is the adjacent cell interfering with the reference signal of the service cell; the detecting that the level value of the same-frequency neighboring cell adjacent to the service cell and the level value of the service cell meet the preset condition comprises the following steps: detecting that the difference value between the level value of the adjacent cell and the level value of the service cell in the continuous first preset number of measurement reports is within 3db, or that the level value of the adjacent cell is larger than the level value of the service cell;
And the information sending unit is used for informing the adjacent cell of the time-frequency resource information distributed by the terminal user in the semi-static scheduling period so that the base station where the adjacent cell is located stops sending the cell reference signal of the time-frequency resource.
4. A method of reducing cell reference signal interference, the method comprising:
the base station of the current cell receives time-frequency resource information distributed by the terminal user in a semi-static scheduling period and sent by the base station of the service cell of the terminal user, wherein the current cell is a neighboring cell which has cell reference signal interference with the service cell of the terminal user and has the same frequency as the service cell and the same PCI module 3; if the level value of the same-frequency neighbor cell adjacent to the service cell and the level value of the service cell are detected to meet the preset condition, and the neighbor cell is identical to the PCI module 3 of the service cell, determining that the neighbor cell is a neighbor cell interfering with the reference signal of the service cell; the detecting that the level value of the same-frequency neighboring cell adjacent to the service cell and the level value of the service cell meet the preset condition comprises the following steps: detecting that the difference value between the level value of the adjacent cell and the level value of the service cell in the continuous first preset number of measurement reports is within 3db, or that the level value of the adjacent cell is larger than the level value of the service cell;
And stopping transmitting the cell reference signal of the time-frequency resource in the semi-static scheduling period.
5. The method of claim 4, wherein ceasing to transmit the cell reference signal for the time-frequency resource during the semi-persistent scheduling period comprises:
reducing the scheduling priority of the time-frequency resource in a semi-static scheduling period;
and stopping the transmission of the cell reference signal at the time when no service is scheduled.
6. A second base station for reducing cell reference signal interference, the second base station comprising:
the information receiving unit is used for receiving time-frequency resource information distributed by the terminal user in a semi-static scheduling period and transmitted by a base station where a serving cell of the terminal user is located by a base station where the current cell is located, wherein the current cell is a neighboring cell which has cell reference signal interference with the serving cell of the terminal user and has the same frequency as the serving cell and the same PCI module 3; if the level value of the same-frequency neighbor cell adjacent to the service cell and the level value of the service cell are detected to meet the preset condition, and the neighbor cell is identical to the PCI module 3 of the service cell, determining that the neighbor cell is a neighbor cell interfering with the reference signal of the service cell; the detecting that the level value of the same-frequency neighboring cell adjacent to the service cell and the level value of the service cell meet the preset condition comprises the following steps: detecting that the difference value between the level value of the adjacent cell and the level value of the service cell in the continuous first preset number of measurement reports is within 3db, or that the level value of the adjacent cell is larger than the level value of the service cell;
And the resource scheduling unit is used for stopping transmitting the cell reference signal of the time-frequency resource in the semi-static scheduling period.
7. A computing device, comprising: the device comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete communication with each other through the communication bus;
the memory is configured to store at least one executable instruction that causes the processor to perform the steps of the method of reducing cell reference signal interference according to any one of claims 1-2 or 4-5.
8. A computer storage medium having stored therein at least one executable instruction for causing a processor to perform the steps of the method of reducing cell reference signal interference according to any one of claims 1-2 or 4-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010908465.2A CN114205861B (en) | 2020-09-02 | 2020-09-02 | Method for reducing cell reference signal interference, base station and computing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010908465.2A CN114205861B (en) | 2020-09-02 | 2020-09-02 | Method for reducing cell reference signal interference, base station and computing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114205861A CN114205861A (en) | 2022-03-18 |
| CN114205861B true CN114205861B (en) | 2023-08-18 |
Family
ID=80644199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010908465.2A Active CN114205861B (en) | 2020-09-02 | 2020-09-02 | Method for reducing cell reference signal interference, base station and computing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114205861B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113037422B (en) * | 2019-12-25 | 2022-09-13 | 中国移动通信集团山东有限公司 | Cell reference signal sending method, device, storage medium and computer equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219179A (en) * | 2014-08-06 | 2014-12-17 | 无锡高联信息技术有限公司 | Parallel computing method for channel estimation of common-frequency cells with different RS biases in LTE (long term evolution) |
| CN104507109A (en) * | 2014-12-22 | 2015-04-08 | 北京迪特卡得通信设备有限公司 | LTE (long term evolution) cell PCI (peripheral component interconnect) optimizing method based on MR measurement |
| CN104661244A (en) * | 2015-02-12 | 2015-05-27 | 中国联合网络通信集团有限公司 | Method and device for evaluating PCI (physical cell identifier) mod3 interference |
| EP2929713A1 (en) * | 2012-12-04 | 2015-10-14 | Nokia Solutions and Networks Oy | Allocation of physical cell identification |
| CN105981453A (en) * | 2013-08-08 | 2016-09-28 | 黑莓有限公司 | Method and system for initial synchronization and collison avoidance in device to device communications without network coverage |
| KR102029929B1 (en) * | 2018-09-17 | 2019-10-08 | 주식회사 큐셀네트웍스 | Method and apparatus for performing resource management for inter-cell interference control in a mobile communications network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3078223B1 (en) * | 2013-12-04 | 2021-02-17 | Nokia Solutions and Networks Oy | Self-organized distributed assignment, optimization, and use of physical cell ids |
-
2020
- 2020-09-02 CN CN202010908465.2A patent/CN114205861B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2929713A1 (en) * | 2012-12-04 | 2015-10-14 | Nokia Solutions and Networks Oy | Allocation of physical cell identification |
| CN105981453A (en) * | 2013-08-08 | 2016-09-28 | 黑莓有限公司 | Method and system for initial synchronization and collison avoidance in device to device communications without network coverage |
| CN104219179A (en) * | 2014-08-06 | 2014-12-17 | 无锡高联信息技术有限公司 | Parallel computing method for channel estimation of common-frequency cells with different RS biases in LTE (long term evolution) |
| CN104507109A (en) * | 2014-12-22 | 2015-04-08 | 北京迪特卡得通信设备有限公司 | LTE (long term evolution) cell PCI (peripheral component interconnect) optimizing method based on MR measurement |
| CN104661244A (en) * | 2015-02-12 | 2015-05-27 | 中国联合网络通信集团有限公司 | Method and device for evaluating PCI (physical cell identifier) mod3 interference |
| KR102029929B1 (en) * | 2018-09-17 | 2019-10-08 | 주식회사 큐셀네트웍스 | Method and apparatus for performing resource management for inter-cell interference control in a mobile communications network |
Non-Patent Citations (1)
| Title |
|---|
| LTE中MOD3干扰原理与优化;李智;《中国新通信》;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114205861A (en) | 2022-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210274402A1 (en) | Method, computer program and apparatus for selecting a beam for handover | |
| EP3096481B1 (en) | Signal transmission method and apparatus | |
| US9148879B2 (en) | Method for triggering terminal to send sounding reference signal, terminal, and base station | |
| CN103843392B (en) | For the system and method for Measurement bandwidth configuration | |
| US10292149B2 (en) | Physical downlink control channel transmission method and apparatus | |
| US20170339693A1 (en) | Hidden node detection in lte licensed assisted access | |
| WO2019214665A1 (en) | Method and apparatus for selecting resource | |
| CN107872834B (en) | Information transmission method and device | |
| CN109803298B (en) | Method and apparatus for controlling channel listening behavior in wireless communication system | |
| CN104221421A (en) | System and method for measurement report triggering configuration for multiple point communication measurement set management | |
| US20220286985A1 (en) | Signal transmission method, signal reception method, and user equipment | |
| CN109565774B (en) | Data transmission method and device | |
| US20220256487A1 (en) | Rate matching indication method and apparatus, and device and storage medium | |
| US20180007625A1 (en) | Selective scheduling grant rejection for spectrum sharing in a wireless network | |
| EP3247157A1 (en) | Method for managing wireless resources, and access point using same | |
| US10015798B2 (en) | Method and system for managing co-channel interference on a traffic channel | |
| EP3355635A1 (en) | Multiplexing sending and receiving method and device for discovery signal and physical downlink shared channel | |
| CN114205861B (en) | Method for reducing cell reference signal interference, base station and computing equipment | |
| US20240015702A1 (en) | Method for reselecting sidelink resource and apparatus for the same | |
| US20240049207A1 (en) | Beam Management in Multi-TRP Operation | |
| CN114599010A (en) | Positioning method and device on secondary link SL and terminal | |
| CN116326039A (en) | UE operation for beam management in multi-TRP operation | |
| WO2018010066A1 (en) | Method for facilitating clear channel assessment and radio unit | |
| US20180167831A1 (en) | Data transmission method, base station device and non-transitory computer-readable medium | |
| US10433300B2 (en) | Resource allocation method and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |