CN110087326B - Method and device for reducing harmonic interference - Google Patents
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Abstract
The application provides a method and a device for reducing harmonic interference, relates to the field of communication, and can improve the frequency spectrum utilization rate of a system. The method is applied to a resource scheduling system, the resource scheduling system comprises a first scheduler and a second scheduler, the first scheduler is used for transceiving data on a first frequency range, and the second scheduler is used for transceiving data on a second frequency range, the method comprises the following steps: determining whether the frequency signal of the second frequency range and the frequency signal of the first frequency range generate harmonic interference, if so, the first scheduler determining target frequency ranges corresponding to different user equipment according to a limitation default value X and at least one frequency starting value Z sent by the second scheduler; for different user equipments, the first scheduler may transceive data in the first frequency range except for the target frequency range corresponding to the user equipment.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a method and an apparatus for reducing harmonic interference.
Background
Dual connectivity is an important solution for a fifth generation (5th generation, 5G) mobile communication network, and includes long term evolution-new air interface (LTE-NR) dual connectivity and new air interface-new air interface (NR-NR) dual connectivity. The LTE-NR dual connectivity may utilize LTE as a cover layer and NR as a capacity layer, and a terminal operating in the dual connectivity mode may experience performance gains brought by both LTE and NR systems.
However, when the terminal transmits data in a low frequency band (LTE) and receives data in another high frequency band (NR), and the two frequency bands satisfy a certain rule, the frequency-doubled signal of the low frequency transmission signal of the terminal falls within the high frequency reception band, and a local interference signal is generated for the high frequency useful signal to be received. This interference is called harmonic interference. The influence of harmonic interference is mainly reflected in that the receiving sensitivity of the user equipment on an interfered frequency band is reduced, namely, the background noise is raised due to the interference, when a useful signal is demodulated, the background noise or the interference is too high, the signal can be solved only when the strength of the useful signal is relatively high, and the downlink coverage and the user equipment experience rate are seriously influenced.
For such a severe self-interference situation, one current solution is to specially design the hardware link of the user equipment, and add rf devices to reduce the power of the local frequency-doubled signal. However, if the rf hardware design of the ue is changed, a certain cost increase will be brought. Another scheme is a time-division multiplexing (TDM), that is, when the user equipment transmits the uplink data in the whole low frequency, the downlink data is not scheduled in the whole high frequency downlink, but the scheme can cause the scheduling opportunities of the uplink and downlink of the user equipment to be directly halved, so that the downlink and uplink rates of the single user equipment and the whole system are seriously reduced.
Disclosure of Invention
The application provides a method and a device for reducing harmonic interference, which can solve the technical problem that the overall downlink and uplink rates of single-user equipment and a system are seriously reduced by reducing the harmonic interference.
In order to achieve the purpose, the technical scheme is as follows:
in a first aspect, the present application provides a method for reducing harmonic interference, which is applied to a resource scheduling system, the resource scheduling system includes a first scheduler and a second scheduler, the first scheduler transmits and receives data over a first frequency range, and the second scheduler transmits and receives data over a second frequency range, the first frequency range is higher than the second frequency range, and the method includes: the first scheduler determines whether the frequency signal of the second frequency range and the frequency signal of the first frequency range generate harmonic interference, where the harmonic interference specifically includes: n-order harmonic interference, wherein N is a natural number more than or equal to 2; if yes, the first scheduler receives a limitation default value X and at least one frequency starting value Z which are sent by the second scheduler, and each frequency starting value Z corresponds to at least one user equipment; the first scheduler determines target frequency ranges corresponding to different user equipment according to the limitation default value X and at least one frequency starting value Z; for the different user equipments, the first scheduler transceives data over other frequency ranges in the first frequency range except the target frequency range corresponding to the user equipment.
In a second aspect, the present application provides a method for reducing harmonic interference, applied to a resource scheduling system, the resource scheduling system including a first scheduler and a second scheduler, the first scheduler transceiving data on a first frequency range, and the second scheduler transceiving data on a second frequency range, the first frequency range being higher than the second frequency range, the method including: the second scheduler determines whether the frequency signal of the first frequency range and the frequency signal of the second frequency range generate harmonic interference, where the harmonic interference specifically includes: n-order harmonic interference, wherein N is a natural number more than or equal to 2; if yes, the second scheduler obtains a limitation default value X and at least one frequency starting value Z, wherein each frequency starting value Z corresponds to at least one user equipment; the second scheduler sends the limitation default value X and at least one frequency start value Z to the first scheduler.
In a third aspect, the present application further provides an apparatus for reducing harmonic interference, where the apparatus is applied to a resource scheduling system, the resource scheduling system includes a first scheduler and a second scheduler, the first scheduler transceives data over a first frequency range, the second scheduler transceives data over a second frequency range, and the first frequency range is higher than the second frequency range, and the first scheduler specifically includes: the determining unit is configured to determine whether the frequency signal of the second frequency range and the frequency signal of the first frequency range generate harmonic interference, where the harmonic interference specifically includes: n-order harmonic interference, wherein N is a natural number more than or equal to 2; the receiving unit is configured to receive a limitation default value X and at least one frequency start value Z sent by the second scheduler if the nth harmonic interference occurs, where each frequency start value Z corresponds to at least one user equipment; the computing unit is configured to determine target frequency ranges corresponding to different pieces of user equipment according to the default limiting value X and at least one frequency starting value Z; the scheduling unit is configured to, for different user equipments, send and receive data in other frequency ranges in the first frequency range except for the target frequency range corresponding to the user equipment.
In a fourth aspect, the present application further provides an apparatus for reducing harmonic interference, which is applied to a resource scheduling system, where the resource scheduling system includes a first scheduler and a second scheduler, the first scheduler transceives data over a first frequency range, and the second scheduler transceives data over a second frequency range, the first frequency range is higher than the second frequency range, and the second scheduler specifically includes: the device comprises a determining unit, an acquiring unit and a sending unit; the determining unit is configured to determine whether the frequency signal in the first frequency range and the frequency signal in the second frequency range generate harmonic interference, where the harmonic interference specifically includes: n-order harmonic interference, wherein N is a natural number more than or equal to 2; the acquiring unit is configured to acquire a limitation default value X and at least one frequency start value Z if nth order harmonic interference occurs, where each frequency start value Z corresponds to at least one user equipment; the sending unit is configured to send the limitation default value X and at least one frequency start value Z to the first scheduler.
In a fifth aspect, the present application further provides an apparatus for reducing harmonic interference, the apparatus comprising: a processor, a memory, and a communication interface, the communication interface is used for the apparatus to communicate with other devices or networks, the memory is used for storing programs, and the processor calls the programs stored in the memory to execute the method for reducing harmonic interference according to any one of the first aspect and the various optional implementations thereof.
In a sixth aspect, the present application provides a computer-readable storage medium, which stores instructions that, when executed by a computer, perform the method for reducing harmonic interference according to the first aspect and any one of the various alternative implementations thereof.
In a seventh aspect, the present application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the method for reducing harmonic interference of the first aspect and any one of the various alternative implementations thereof.
The embodiment of the invention provides a method and a device for reducing harmonic interference, which are applied to a resource scheduling system, wherein the resource scheduling system comprises a first scheduler and a second scheduler, the first scheduler receives and transmits data in a first frequency range, the second scheduler receives and transmits data in a second frequency range, the first frequency range is higher than the second frequency range, and if the harmonic interference occurs, the first scheduler avoids a target frequency range determined according to a limiting default value X and at least one frequency starting value Z which are acquired and input by the second scheduler when the first scheduler receives and transmits data. The technical problem that in the prior art, when the user equipment transmits the whole low-frequency uplink, the scheduling opportunity of the uplink and downlink of the user equipment is directly halved because the whole high-frequency downlink does not schedule the downlink data is solved, the frequency spectrum utilization rate and the uplink and downlink speed are improved, and the overall performance of the system is improved.
Drawings
Fig. 1 is a schematic structural diagram of a communication network applied to a frequency resource scheduling system of a method for reducing harmonic interference according to an embodiment of the present application;
fig. 2 is a first flowchart illustrating a method for reducing harmonic interference according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart illustrating a second method for reducing harmonic interference according to an embodiment of the present application;
FIG. 4 is a first schematic diagram of an apparatus for reducing harmonic interference according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of a second apparatus for reducing harmonic interference according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a base station according to an embodiment of the present application.
Detailed Description
A method, an apparatus and a system for reducing harmonic interference according to embodiments of the present application are described in detail below with reference to the accompanying drawings.
The term "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.
The terms "first" and "second" and the like in the description and drawings of the present application are used for distinguishing different objects or for distinguishing different processes for the same object, and are not used for describing a specific order of the objects.
Furthermore, the terms "including" and "having," and any variations thereof, as referred to in the description of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "such as" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the description of the present application, the meaning of "a plurality" means two or more unless otherwise specified.
The technical scheme provided by the embodiment of the application can be applied to various communication systems, such as a 5G system, a future evolution system or a plurality of communication fusion systems, and the like, and can also be applied to the existing communication system.
An embodiment of the present application provides a method for reducing harmonic interference, which is applied to a resource scheduling system, as shown in fig. 1, the resource scheduling system includes: a first scheduler and a second scheduler, the first scheduler transceiving data over a first frequency range, the second scheduler transceiving data over a second frequency range, the first frequency range being higher than the second frequency range, the first and second schedulers being applied to a base station side. In fig. 1, the first scheduler and the second scheduler determine whether harmonic interference occurs, and if harmonic interference exists, the first scheduler determines a frequency that needs to be avoided, and avoids the frequency that needs to be avoided when data is transmitted and received, and transmits and receives data in a frequency range except for the frequency that needs to be avoided. It should be noted that fig. 1 is only an exemplary architecture diagram, and the network architecture may include other functional units besides the functional units shown in fig. 1, which is not limited in this application.
The UE may be a User Equipment (UE), such as: cell phones, computers, and may also be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, smart phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), laptop computers, handheld communication devices, handheld computing devices, satellite radios, wireless modem cards, Set Top Boxes (STBs), Customer Premises Equipment (CPE), and/or other devices used to communicate over a wireless system.
An embodiment of the present application provides a method for reducing harmonic interference, as shown in fig. 2, the method includes S101-S104:
s101, the first scheduler determines whether harmonic interference occurs with the frequency signal of the first frequency range according to the frequency signal of the second frequency range, and/or the second scheduler determines whether harmonic interference occurs with the frequency signal of the second frequency range according to the frequency signal of the first frequency range.
In the dual connectivity technology, the user equipment implements transmission of user data/signaling by using resources of two different access technologies, and has higher reliability and lower handover delay. In this application, a first scheduler transmits and receives data over a first frequency range and a second scheduler transmits and receives data over a second frequency range.
For example, LTE-NR dual connectivity is one of dual connectivity technologies, and generally employs two different frequency bands, that is, LTE is deployed in one frequency band and NR is deployed in another frequency band, and for some specific frequency band combinations, the LTE-NR dual connectivity user equipment will generate self-interference. Specifically, the user equipment transmits in a second frequency range, and data needs to be received in another first frequency range, and when the two frequency bands meet a certain rule, the frequency multiplication signal of the user equipment transmitting signal in the second frequency range falls within the first frequency range receiving frequency band, and generates a local interference signal for the first frequency range useful signal that needs to be received.
The first scheduler may determine whether the frequency signal of the second frequency range is in harmonic interference with the frequency signal of the first frequency range according to a rule, where the rule is as follows: the second frequency range uplink frequency band × N is the first frequency range downlink frequency band, this interference is called harmonic interference, N is the order of the harmonic interference, and the range is a natural number greater than or equal to 2.
Accordingly, the second scheduler may determine whether the frequency signals of the first frequency range are in harmonic interference with the frequency signals of the second frequency range according to rules.
Illustratively, the first scheduler transmits and receives data in a first frequency range, the downlink frequency range of the first frequency range is 3490MHz to 3540MHz, the second scheduler transmits and receives data in a second frequency range, the uplink frequency range of the second frequency range is 1725MHz to 1750MHz, 2 times of the uplink frequency 1725MHz to 1750MHz is 3450MHz to 3500MHz, and then the frequency range with serious harmonic interference influence is 3490 to 3500 MHz. That is, there is potential harmonic interference between the downlink frequency of the first frequency range and the uplink frequency of the second frequency range, and the order is 2, that is, there is potential 2-order harmonic interference between these two frequency bands.
S102, if the N-order harmonic interference occurs, the second scheduler acquires an input limit default value X and at least one frequency starting value Z, wherein each frequency starting value Z corresponds to at least one user equipment.
If the determination result of S101 is that nth order harmonic interference occurs, the second scheduler obtains the input default limiting value X and at least one frequency starting value Z. The frequency starting value Z is the starting position of the frequency band where harmonic interference occurs, each frequency starting value Z is a different frequency starting value corresponding to different user equipment, when there are too many users, the users can be grouped, and a plurality of users use the same frequency starting value.
In this embodiment, the whole frequency range may be divided by using a finer frequency domain granularity, where the scheduler limits, in a frequency band combination that may generate harmonic interference, a frequency range that is usable for actual scheduling and is uplink in the second frequency range, where the limitation default value X is the frequency range used for actual scheduling, and the limitation default value X may be set according to an actual situation, for example, 2MHz or 5MHz, or may be another value, and is not limited herein.
S103, the second scheduler sends the default value X and at least one frequency start value Z to the first scheduler.
Accordingly, the first scheduler receives the limitation default value X and the at least one frequency start value Z transmitted by the second scheduler.
S104, the first scheduler determines a frequency range needing to be avoided and carries out avoidance.
The first scheduler determines a target frequency range corresponding to different ue according to the default value X and at least one frequency start value Z, and for different ue, the first scheduler transmits and receives data in other frequency ranges in the first frequency range except the target frequency range corresponding to the ue.
Specifically, after the first scheduler receives the limitation default value X and the at least one frequency start value Z sent by the second scheduler, the first scheduler receives a preset low-interference frequency range fluctuation value F, that is, a frequency range fluctuation value with low harmonic interference influence is configured according to a network load, where the preset low-interference frequency range fluctuation value F may be set according to an actual situation, such as 0MHz or 5MHz, or may be other values, which is not limited herein.
Then, according to the formula
The target frequency range is determined, where B is the carrier bandwidth of the first scheduler.
Optionally, the method is suitable for the following behavior-oriented services of the user, such as watching a video, downloading a file, and the like. When a user initiates a service of a main behavior, such as live broadcast, video upload, and the like, a scheduler may obtain an uplink data buffer of the user, where a preset threshold may be set according to an actual situation, and when the threshold is exceeded, a temporary limit value Y is triggered to be Y, where the temporary limit value Y is a frequency range used for actual scheduling, and the temporary limit value may be set to be a different value, such as 10MHz or 20MHz, or another value, according to a difference in uplink data amount, and is not limited herein, and an effective time of the temporary limit value Y is set to be T. The effective time is the time when the uplink data buffer of the user exceeds the threshold value. During the valid time T, the first scheduler determines the target frequency range according to the frequency start value Z and the constraint temporary value Y. Wherein the first scheduler follows a formula according to the frequency starting value Z and the temporary limiting value Y
The target frequency range is determined.
Optionally, the method may be directly started or started according to the user assistance information. The user assistance means that the ue reports, by a certain determination, whether the scheduler is currently in a situation with a large influence of N-order harmonic interference, in the process, before the second scheduler receives the limitation default value X and the at least one frequency start value Z sent by the ue and sends the limitation default value X and the at least one frequency start value Z to the first scheduler, as shown in fig. 3, the method further includes S1021-S1022:
s1021, the first scheduler receives retransmission time overrun information sent by the ue, where the retransmission time overrun information is used to indicate that the retransmission time of the same data packet on the same frequency resource by the ue exceeds a preset threshold.
In a cell covered by frequency resources of a base station, user equipment may be located in a central area of the cell or in an edge area of the cell, uplink transmission power of the user equipment is higher when the user equipment is located in a distant point area of the cell or at the edge of the cell, even the uplink transmission power reaches the maximum transmission power, at this time, an N-order harmonic interference value received downlink in a first frequency range is increased, a BLER value of the user equipment in the frequency range affected by the N-order harmonic in the first frequency range is increased, and retransmission times are increased.
Illustratively, the user equipment side counts the retransmission times of a data packet, for example, counts the HARQ NACK times of the same data packet on the same frequency resource, and when the number of retransmission times exceeds a specified number, the specified number may be configured by an operator (for example, 2 times, 3 times, and the like), the user equipment reports potential harmonic interference indication information of a scheduler, and may be carried on downlink measurement report information, and increases a harmonic interference indication bit on a subband measurement report, and indicates whether the subband has high interference by using 1 bit.
S1022, the first scheduler determines the harmonic interference level according to the retransmission time overrun information.
When the user equipment is positioned at the near-midpoint of the cell in the second frequency range, the uplink transmitting power can be kept at a lower level, at the moment, the N-order harmonic interference value received by the downlink in the first frequency range is also lower, and the user equipment can correctly demodulate the downlink data in the whole bandwidth of the first frequency range without starting a scheduling algorithm of a scheduler.
When the retransmission times exceed the preset threshold value, the scheduler receives the retransmission times overrun information sent by the user equipment, and the scheduler starts the scheduling process according to the steps S101-S104.
The application provides a method for reducing harmonic interference, which is applied to a resource scheduling system, wherein the resource scheduling system comprises a first scheduler and a second scheduler, the first scheduler transmits and receives data in a first frequency range, the second scheduler transmits and receives data in a second frequency range, the first frequency range is higher than the second frequency range, and if harmonic interference occurs, the first scheduler avoids a target frequency range determined according to a limitation default value X and at least one frequency starting value Z acquired and input by the second scheduler when transmitting and receiving data. The technical problem that in the prior art, when the user equipment transmits the whole low-frequency uplink, the scheduling opportunity of the uplink and downlink of the user equipment is directly halved because the whole high-frequency downlink does not schedule the downlink data is solved, the frequency spectrum utilization rate and the uplink and downlink speed are improved, and the overall performance of the system is improved.
In the embodiment of the present application, the base station may be divided into the functional modules or the functional units according to the above method examples, for example, each functional module or functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module may be implemented in a form of hardware, or may be implemented in a form of a software functional module or a functional unit. The division of the modules or units in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
An embodiment of the present application provides an apparatus for reducing harmonic interference, which is applied to a frequency resource scheduling system, where the frequency resource scheduling system further includes a second scheduler, and as shown in fig. 4, the apparatus specifically includes: determination unit 201, reception unit 202, calculation unit 203, and scheduling unit 204:
the determining unit 201 is configured to determine whether a frequency signal of the second frequency range and a frequency signal of the first frequency range generate harmonic interference, where the harmonic interference specifically includes: n-order harmonic interference, wherein N is a natural number more than or equal to 2.
The receiving unit 202 is configured to receive a limitation default value X and at least one frequency start value Z sent by the second scheduler if the nth harmonic interference occurs, where each frequency start value Z corresponds to at least one user equipment.
The calculating unit 203 is configured to determine target frequency ranges corresponding to different user equipments according to the default limiting value X and at least one frequency starting value Z.
The scheduling unit 204 is configured to send and receive data to and from the different user equipments in the frequency range other than the target frequency range corresponding to the user equipment in the first frequency range.
Optionally, the calculating unit 203 is further configured to:
according to the formula
The target frequency range is determined.
Wherein, F is a preset low interference frequency range fluctuation value, and B is a carrier bandwidth of the first scheduler.
Optionally, the receiving unit 202 is further configured to receive a temporary limiting value Y set according to an uplink data amount and sent by the second scheduler if uplink data of the ue exceeds a preset threshold, where an effective time of the temporary limiting value Y is T.
The calculating unit 203 is further configured to calculate the limiting temporary value Y according to the formula and the frequency starting value Z during the valid time T
The target frequency range is determined.
Optionally, before the receiving unit 202 receives the frequency start value Z and the limitation default value X sent by the second scheduler, it is characterized in that:
the receiving unit 202 is further configured to receive retransmission time overrun information sent by the user equipment, where the retransmission time overrun information is used to indicate that the retransmission times of the same data packet on the same frequency resource on the user equipment exceed a preset threshold.
The device also includes: a determining unit 205, configured to determine the harmonic interference degree according to the retransmission time overrun information.
An embodiment of the present application provides an apparatus for reducing harmonic interference, which is applied to a frequency resource scheduling system, where the frequency resource scheduling system includes a first scheduler and a second scheduler, a frequency scheduling range of the first scheduler is higher than that of the second scheduler, as shown in fig. 5, the second scheduler specifically includes: determination unit 301, acquisition unit 302, transmission unit 303:
the determining unit 301 is configured to determine whether a frequency signal in the first frequency range and a frequency signal in the second frequency range generate harmonic interference, where the harmonic interference specifically includes: n-order harmonic interference, wherein N is a natural number more than or equal to 2.
The obtaining unit 302 is configured to obtain an input limitation default value X and at least one frequency start value Z if nth order harmonic interference occurs, where each frequency start value Z corresponds to at least one user equipment.
The sending unit 303 is configured to send the limitation default value X and at least one frequency start value Z to the first scheduler.
Fig. 6 shows a schematic diagram of another possible structure of the base station involved in the above embodiment. The base station includes: a processor 402 and a communication interface 403. The processor 402 is configured to control and manage actions of the base station, for example, perform steps performed by the determining unit 201, the calculating unit 202, the scheduling unit 204, the judging unit 205, or the determining unit 301, and/or perform other processes for performing the techniques described herein. The communication interface 403 is used for supporting communication between the base station and other network entities, for example, the steps performed by the receiving unit 203, the obtaining unit 302, and the sending unit 303 are performed. The base station may further comprise a memory 401 and a bus 404, the memory 401 being used for storing program codes and data of the base station.
Wherein the memory 401 may be a memory in a base station or the like, which may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above.
The processor 402 may be any means that can implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein. The processor may be a central processing unit, general purpose processor, digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.
The bus 404 may be an Extended Industry Standard Architecture (EISA) bus or the like. The bus 404 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus.
The embodiment of the present application provides a communication system, which may include a base station, a user equipment, and a server, where the base station is configured to forward a data packet sent by the server to the user equipment, so as to execute the method for reducing harmonic interference provided in the embodiment of the present application. For the description of the base station, the user equipment, and the server, reference may be made to the related description in the foregoing method embodiment and apparatus embodiment, and details are not repeated here.
Through the description of the foregoing embodiments, it will be clear to those skilled in the art that, for convenience and simplicity of description, only the division of the functional modules is illustrated, and in practical applications, the above function distribution may be completed by different functional modules as needed, that is, the internal structure of the apparatus may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
The present application provides a computer program product containing instructions, which when run on a computer causes the computer to execute the method for reducing harmonic interference according to the method embodiments.
An embodiment of the present application further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the network device executes the instructions, the network device executes each step executed by the network device in the method flow shown in the foregoing method embodiment.
The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM), a register, a hard disk, an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, any suitable combination of the above, or any other form of computer readable storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). In embodiments of the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method for reducing harmonic interference, applied to a resource scheduling system, the resource scheduling system including a first scheduler and a second scheduler, the first scheduler transceiving data over a first frequency range, the second scheduler transceiving data over a second frequency range, the first frequency range being higher than the second frequency range, the method comprising:
the first scheduler determines whether the frequency signal of the second frequency range and the frequency signal of the first frequency range generate harmonic interference, where the harmonic interference specifically includes: n-order harmonic interference, wherein N is a natural number more than or equal to 2;
if yes, the first scheduler receives a limitation default value X and at least one frequency starting value Z sent by the second scheduler, wherein each frequency starting value Z corresponds to at least one user equipment;
the first scheduler determines target frequency ranges corresponding to different user equipment according to the limitation default value X and at least one frequency starting value Z;
for the different user equipment, the first scheduler transceiving data in the first frequency range except for the target frequency range corresponding to the user equipment;
determining target frequency ranges corresponding to different user equipments according to the default limit value X and the at least one frequency start value Z specifically includes:
according to the formula
The target frequency range is determined and,
wherein, F is a preset low interference frequency range fluctuation value, and B is a carrier bandwidth of the first scheduler.
2. The method of claim 1, further comprising:
if the uplink data of the user equipment exceeds a preset threshold value, the first scheduler receives a temporary limiting value Y which is sent by the second scheduler and set according to the uplink data volume, and the effective time of the temporary limiting value Y is T;
in the effective time T, the first scheduler follows a formula according to the frequency starting value Z and the limiting temporary value Y
The target frequency range is determined.
3. The method of claim 1, wherein before the first scheduler receives the limitation default value X and the at least one frequency start value Z transmitted by the second scheduler, the method further comprises:
the first scheduler receives retransmission time overrun information sent by a terminal, wherein the retransmission time overrun information is used for indicating that the retransmission times of the same data packet on the same frequency resource by the terminal exceed a preset threshold value;
and the first scheduler determines the harmonic interference degree according to the retransmission time overrun information.
4. A method for reducing harmonic interference, applied to a resource scheduling system, the resource scheduling system including a first scheduler and a second scheduler, the first scheduler transceiving data over a first frequency range, the second scheduler transceiving data over a second frequency range, the first frequency range being higher than the second frequency range, the method comprising:
the second scheduler determines whether the frequency signal of the first frequency range and the frequency signal of the second frequency range generate harmonic interference, where the harmonic interference specifically includes: n-order harmonic interference, wherein N is a natural number more than or equal to 2;
if yes, the second scheduler obtains a limitation default value X and at least one frequency starting value Z, and each frequency starting value Z corresponds to at least one user equipment;
the second scheduler sends the limitation default value X and at least one frequency start value Z to the first scheduler.
5. An apparatus for reducing harmonic interference, applied to a resource scheduling system, the resource scheduling system including a first scheduler and a second scheduler, the first scheduler transceiving data on a first frequency range, and the second scheduler transceiving data on a second frequency range, the first frequency range being higher than the second frequency range, the first scheduler comprising: a determining unit, a receiving unit, a calculating unit and a scheduling unit,
the determining unit is configured to determine whether a harmonic interference occurs between the frequency signal of the second frequency range and the frequency signal of the first frequency range, where the harmonic interference specifically includes: n-order harmonic interference, wherein N is a natural number more than or equal to 2;
the receiving unit is configured to receive a limitation default value X and at least one frequency start value Z sent by the second scheduler if the nth harmonic interference occurs, where each frequency start value Z corresponds to at least one user equipment;
the calculating unit is configured to determine target frequency ranges corresponding to different pieces of user equipment according to the default limiting value X and the at least one frequency starting value Z;
the scheduling unit is configured to send and receive data to and from the different user equipment in the frequency range other than the target frequency range corresponding to the user equipment in the first frequency range;
the computing unit is further configured to:
according to the formula
The target frequency range is determined and,
wherein, F is a preset low interference frequency range fluctuation value, and B is a carrier bandwidth of the first scheduler.
6. The apparatus of claim 5,
the receiving unit is further configured to receive a temporary limit value Y set according to an uplink data amount and sent by the second scheduler if uplink data of the user equipment exceeds a preset threshold, where an effective time of the temporary limit value Y is T;
the calculation unit is further configured to calculate the limiting temporary value Y according to the formula and the frequency starting value Z during the effective time T
The target frequency range is determined.
7. The apparatus of claim 5, wherein before the receiving unit receives the starting value of frequency Z and the limiting default value X transmitted by the second scheduler,
the receiving unit is further configured to receive retransmission time overrun information sent by the terminal, where the retransmission time overrun information is used to indicate that the number of times that the terminal retransmits the same data packet on the same frequency resource exceeds a preset threshold;
the determining unit is further configured to determine a harmonic interference degree according to the retransmission time overrun information.
8. An apparatus for reducing harmonic interference, applied to a resource scheduling system, the resource scheduling system including a first scheduler and a second scheduler, the first scheduler transceiving data over a first frequency range, the second scheduler transceiving data over a second frequency range, the first frequency range being higher than the second frequency range, the second scheduler comprising: the device comprises a determining unit, an acquiring unit and a sending unit;
the determining unit is configured to determine whether a harmonic interference occurs between the frequency signal of the first frequency range and the frequency signal of the second frequency range, where the harmonic interference specifically includes: n-order harmonic interference, wherein N is a natural number more than or equal to 2;
the acquiring unit is configured to acquire a limitation default value X and at least one frequency start value Z if nth order harmonic interference occurs, where each frequency start value Z corresponds to at least one user equipment;
the sending unit is configured to send the limitation default value X and at least one frequency start value Z to the first scheduler.
9. An apparatus for reducing harmonic interference, the apparatus comprising: a processor, a memory, and a communication interface for the apparatus to communicate with other devices or networks, the memory to store a program, the processor to invoke the program stored by the memory to perform the method of reducing harmonic interference according to any of claims 1-3 or 4.
10. A computer-readable storage medium having stored thereon instructions which, when executed by a computer, cause the computer to perform the method of reducing harmonic interference of any of claims 1-3 or 4.
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