CN113438672B - Interference processing method and device - Google Patents
Interference processing method and device Download PDFInfo
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- CN113438672B CN113438672B CN202110705346.1A CN202110705346A CN113438672B CN 113438672 B CN113438672 B CN 113438672B CN 202110705346 A CN202110705346 A CN 202110705346A CN 113438672 B CN113438672 B CN 113438672B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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Abstract
The application provides an interference processing method and device, relates to the technical field of communication, and can conveniently and effectively reduce cross interference. The method comprises the following steps: determining a plurality of uplink time slots in a frame of access network equipment, and determining the received noise power of each uplink time slot in the plurality of uplink time slots; determining an interference influence parameter of access network equipment according to the received noise power of each uplink time slot and the number of time-frequency resources occupied by an access channel of each terminal equipment in at least one terminal equipment in each uplink time slot; determining a target uplink time slot according to the received noise power of each uplink time slot; the target uplink time slot is an uplink time slot which meets a preset condition in the plurality of uplink time slots; and adjusting at least one of the target power of an uplink access signal detection threshold of an access channel of the access network equipment and the modulation coding level of a signaling message of the access channel of the access network equipment according to the received noise power and the interference influence parameters of the target uplink time slot.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to an interference processing method and apparatus.
Background
In a Time Division Duplex (TDD) system of a fifth generation mobile communication technology (5G), there are diversified network application scenarios. In order to adapt to diversified network application scenarios, different time-frequency resources need to be configured for access network devices in different network application scenarios. However, if time-frequency resources configured differently between two adjacent access network devices are used, severe cross interference between the adjacent access network devices may be caused.
At present, the method for processing the serious cross interference between the adjacent access network devices mainly comprises: and the physical isolation method is adopted to increase the isolation degree of the physical space between the two access network devices, thereby reducing the cross interference between the two access network devices. The method for processing the serious cross interference between the adjacent access network devices has great scene limitation in practical implementation.
Disclosure of Invention
The application provides an interference processing method and device, which can conveniently and effectively reduce cross interference.
In order to achieve the purpose, the technical scheme is as follows:
in a first aspect, the present application provides an interference processing method, including: determining a plurality of uplink time slots in a frame of access network equipment, and determining the received noise power of each uplink time slot in the plurality of uplink time slots; determining an interference influence parameter of access network equipment according to the received noise power of each uplink time slot and the number of time-frequency resources occupied by an access channel of each terminal equipment in at least one terminal equipment in each uplink time slot; determining a target uplink time slot according to the received noise power of each uplink time slot; the target uplink time slot is an uplink time slot which meets a preset condition in the plurality of uplink time slots; and adjusting at least one of the target power of an uplink access signal detection threshold of an access channel of the access network equipment and the modulation coding level of a signaling message of the access channel of the access network equipment according to the received noise power and the interference influence parameters of the target uplink time slot.
Based on the above technical solution, the interference processing method provided in the embodiment of the present application adjusts the target power of the uplink access signal detection threshold of the access channel of the access network device and/or the modulation coding level of the signaling message of the access channel of the access network device through the interference parameter, and can conveniently and effectively reduce the interference of the uplink timeslot of the access network device without causing a large influence on other indexes. In addition, the interference parameter of the access network device is determined according to the received noise power of each uplink time slot and the number of time-frequency resources occupied by the access channel of each terminal device in at least one terminal device in each uplink time slot, so that the actual use condition of the uplink time slot of the access network device is fully considered, the interference parameter determined by the access network device is more in line with the reality, and further, the target power of the uplink access signal detection threshold of the access channel of the access network device and/or the adjustment of the modulation coding level of the signaling message of the access channel of the access network device can be more effective.
In a possible implementation manner, when the received noise power of the target uplink timeslot is greater than a first threshold and smaller than a second threshold, determining a target bias power of the access network device according to the interference influence parameter; and adjusting the target power of an uplink access signal detection threshold of an access channel of the access network equipment according to the target bias power of the access network equipment. In this implementation manner, when the received noise power of the target uplink timeslot is greater than the first threshold and smaller than the second threshold, the target bias power of the uplink access signal detection threshold of the access network device is determined according to the interference influence parameter (i.e., the target bias power of the access network device is calculated by using an adaptive method in an interval greater than the first threshold and smaller than the second threshold), and the target bias power of the access network device is calculated by using an adaptive method).
In a possible implementation manner, when the received noise power of the target uplink timeslot is greater than a second threshold, determining a highest target offset power value of the access network device as a target offset power of the access network device; and adjusting the target power of an uplink access signal detection threshold of an access channel of the access network equipment according to the target bias power of the access network equipment. In this implementation manner, when the received noise power of the target uplink timeslot is greater than the second threshold, the target offset power of the access network device is directly determined according to the highest target offset power value of the access network device (that is, when the received noise power of the target uplink timeslot is greater than the second threshold, the target offset power of the access network device is calculated by using an adaptive method), so that the interference on the uplink timeslot of the access network device can be effectively reduced, and the operation of increasing the target offset power of the access network device does not cause too great influence on other indexes of the access network device, thereby ensuring the stability of the network to a certain extent.
In a possible implementation manner, when the received noise power of the target uplink timeslot is greater than a third threshold and smaller than a fourth threshold, determining a bias value of the access network device according to the interference influence parameter; and adjusting the modulation coding level of the signaling message of the access channel of the access network equipment according to the offset value of the access network equipment. In this implementation manner, when the received noise power of the target uplink timeslot is greater than the third threshold and smaller than the fourth threshold, the bias value of the access network device is determined according to the interference influence parameter (i.e., an adaptive method is adopted to calculate the bias value of the access network device in an interval greater than the third threshold and smaller than the fourth threshold), so that the interference on the uplink timeslot of the access network device can be effectively reduced; and the operation of increasing the target bias power of the access network equipment can not cause too large influence on other indexes of the access network equipment, so that the stability of the network is ensured to a certain extent.
In a possible implementation manner, when the received noise power of the target uplink timeslot is greater than the fourth threshold, determining the highest downward-adjusted offset value of the access network device as the offset value of the access network device; and adjusting the modulation coding level of the signaling message of the access channel of the access network equipment according to the offset value of the access network equipment. In this implementation manner, when the received noise power of the target uplink timeslot is greater than the fourth threshold, the target bias power of the access network device is directly determined according to the down-regulated highest bias value of the access network device (i.e., when the received noise power of the target uplink timeslot is greater than the fourth threshold, an adaptive method is adopted to calculate the target bias power of the access network device), so that the interference suffered by the uplink timeslot of the access network device can be effectively reduced; and the operation of increasing the target bias power of the access network equipment can not cause too large influence on other indexes of the access network equipment, so that the stability of the network is ensured to a certain extent.
In a possible implementation manner, determining M frames of the access network device in a preset time period, where each of the M frames includes N uplink timeslots, and the uplink timeslots in each frame have the same position; determining the received noise power of the a-th uplink time slot in the N uplink time slots to be the average value of the received noise power of the a-th uplink time slot in each frame in the M frames; wherein a, M and N are positive integers, and a is less than or equal to N. In this implementation manner, the received noise power of the a-th uplink timeslot in the N uplink timeslots is determined to be an average value of the received noise powers of the a-th uplink timeslots in each of the M frames, so that the stability of the index of the received noise power of the a-th uplink timeslot is stronger.
In a possible implementation manner, the received noise power Pi of the ith uplink time slot of the N uplink time slots is determined; determining the received noise power Pj of the jth uplink time slot in the N uplink time slots; determining the ith uplink time slot in the N uplink time slots as a target uplink time slot under the condition that the difference between Pi and Pj is greater than a fifth threshold value and Pi is greater than a first threshold value; wherein i and j are positive integers, i is less than or equal to N, and j is less than or equal to N. In this manner of implementation,
in a possible implementation manner, the interference influencing parameter of the access network device satisfies the following formula 1:
q is an interference influence parameter;
i is the ith uplink time slot; p i The received noise power of the ith uplink time slot; p SL A first threshold value for received noise power; t is t i The average value of the number of time frequency resources occupied by at least one terminal device in the ith uplink time slot is obtained; r is the total number of uplink time slots in the frame; wherein i and r are positive integers, and i is not more than r. Wherein i and r are positive integers, and i is not more than r. Target bias power of access network equipment, fullSufficient for the following equation 2:
P c is a target bias power; p cl Is the lowest target bias power value; p ch Is the highest target bias power value; p SH Is a second threshold value of the received noise power. The offset value of the access network equipment meets the following formula 3:
Offset MCS is a bias value; m l Is the lowest bias value for down regulation; m h The highest bias value for down regulation; p SM A third threshold value for received noise power; p SN Is a fourth threshold value of the received noise power. In this implementation, the determination of the interference influence parameter, the target bias power, and the target bias value can be made simpler and more convenient.
In a second aspect, the present application provides an interference processing apparatus, comprising: a communication unit and a processing unit; a communication unit, configured to determine a plurality of uplink timeslots in a frame of an access network device, and determine a received noise power of each uplink timeslot in the plurality of uplink timeslots; a processing unit, configured to determine an interference impact parameter of an access network device according to a received noise power of each uplink timeslot and a number of time-frequency resources occupied by an access channel of each terminal device in at least one terminal device in each uplink timeslot; the processing unit is also used for determining a target uplink time slot according to the received noise power of each uplink time slot; the target uplink time slot is an uplink time slot which meets a preset condition in the plurality of uplink time slots; the processing unit is further configured to adjust at least one of a target power of an uplink access signal detection threshold of an access channel of the access network device and a modulation and coding level of a signaling message of the access channel of the access network device according to the received noise power and the interference influence parameter of the target uplink timeslot.
In a possible implementation manner, the processing unit is specifically configured to: when the received noise power of the target uplink time slot is larger than a first threshold value and smaller than a second threshold value, determining the target bias power of the access network equipment according to the interference influence parameter; and adjusting the target power of an uplink access signal detection threshold of an access channel of the access network equipment according to the target bias power of the access network equipment.
In a third aspect, the present application provides an interference processing apparatus, including: a processor and a communication interface; the communication interface is coupled to a processor for executing a computer program or instructions for implementing the interference handling method as described in the first aspect and any one of the possible implementations of the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium having stored therein instructions that, when executed on a terminal, cause the terminal to perform the interference processing method as described in the first aspect and any one of the possible implementations of the first aspect.
In a fifth aspect, embodiments of the present application provide a computer program product containing instructions that, when run on an interference processing apparatus, cause the interference processing apparatus to perform the interference processing method as described in the first aspect and any one of the possible implementation manners of the first aspect.
In a sixth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a computer program or instructions to implement the interference processing method as described in the first aspect and any possible implementation manner of the first aspect.
In particular, the chip provided in the embodiments of the present application further includes a memory for storing a computer program or instructions.
Drawings
Fig. 1 is a schematic diagram illustrating cross interference provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a communication system according to an embodiment of the present application;
fig. 3 is a schematic diagram illustrating a communication device according to an embodiment of the present disclosure;
fig. 4 is a flowchart of an interference processing method according to an embodiment of the present application;
fig. 5 is a flowchart of another interference processing method according to an embodiment of the present application;
fig. 6 is a flowchart of another interference processing method according to an embodiment of the present application;
fig. 7 is a flowchart of another interference processing method according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an interference processing apparatus according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another interference processing apparatus according to an embodiment of the present invention.
Detailed Description
The following describes in detail an interference processing method and apparatus provided in the embodiments of the present application with reference to the accompanying drawings.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.
The terms "first" and "second" and the like in the specification 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 "e.g.," 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.
Hereinafter, terms related to the embodiments of the present application are explained for the convenience of the reader.
(1) The TDD system is a system in which a radio frequency point is shared for transmitting and receiving, and different time slots are used for uplink and downlink communications.
It should be noted that, in the current TDD system, different access network devices may be allocated with different frames for data transmission. In this case, different access network devices may be allocated with different frames (i.e., the uplink and downlink time-frequency resource configurations are inconsistent), so that there is severe cross interference between different access network devices, and thus, the network quality and the network stability may be affected. Therefore, in practical implementation, a semi-fixed configuration mode is adopted in the current TDD system because the problem of cross interference between different access network devices cannot be solved. The semi-fixed configuration means that the uplink and downlink time slot ratios between adjacent access network devices are different, but the time slot ratios are relatively fixed within a period of time.
(2) Cross interference refers to interference between signals transmitted on uplink time slots and signals transmitted on downlink time slots.
The interference between the signal transmitted on the uplink time slot and the signal transmitted on the downlink time slot includes: interference caused by signals transmitted on the uplink time slot to signals transmitted on the downlink time slot, and interference caused by signals transmitted on the downlink time slot to signals transmitted on the uplink time slot.
It should be noted that interference caused by a signal transmitted on an uplink time slot to a signal transmitted on a downlink time slot mainly occurs between devices (e.g., terminal devices) on the user plane side. Interference caused by signals transmitted on the downlink time slots to signals transmitted on the uplink time slots mainly occurs between devices (e.g., access network devices) on the radio network side.
For example, as shown in fig. 1, a terminal 1 accesses a base station 1 through a communication link, and a terminal 2 accesses a base station 2 through a communication link, when the base station 1 currently uses a downlink subframe 103 and the base station 2 currently uses an uplink subframe 203, signals transmitted by the terminal 1 and the base station 1 may cause interference to signals transmitted by the terminal 2 and the base station 3, where the interference is cross interference.
(2) The frame refers to a time period for a specific user to transmit specific data, and can be used as a carrier for transmitting signals between the access network device and the terminal device.
It should be noted that one time period may be divided into a plurality of smaller time periods, so that one frame may be divided into a plurality of time slots, and the plurality of time slots may include: an uplink time slot, a downlink time slot, and a special time slot.
Illustratively, the base station 1 configures a frame as follows: the frame configured by the frame 1 and the base station 2 is as follows: frame 2. The structure of the uplink and downlink slots in frames 1 and 2 is shown in table 1.
TABLE 1
Where DL denotes a downlink time slot and UL denotes an uplink time slot. During transmission, DL12 in frame 1 may cause interference to UL22 in frame 2; DL13 in frame 1 to cause interference to UL23 in frame 2; DL17 in frame 1 may cause interference to UL27 in frame 2.
It should be noted that an access network device generally configures only one frame, and the access network device generally transmits signals using only one fixed frame for a period of time.
The above is a brief introduction to some of the concepts involved in the embodiments of the present application.
The technical solution of the embodiment of the present application can be applied to various communication systems, for example, the communication system can be a third generation partnership project (3 GPP) communication system, such as a 5G communication system, an NR vehicle-to-electronic (V2X) system, and other next-generation communication systems, and can also be a non-3 GPP communication system, which is not limited. In addition, the communication system can also be applied to future-oriented communication technologies, and the technical solutions provided by the embodiments of the present application are all applied. The interference processing method provided in the embodiment of the present application is described below with reference to fig. 1 as an example.
The system architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems. In the embodiment of the present application, the method provided is applied to an NR system or a 5G network as an example.
Fig. 2 is a schematic diagram of a communication system provided in an embodiment of the present application, and as shown in fig. 2, the communication system may include an access network device 10 and a plurality of terminals, such as: terminal 20, terminal 30.
The terminal 20 and the terminal 30 may be located within the coverage of the access network device 10 and connected to the access network device 10.
It should be noted that the access network device 10 may transmit data with the terminal 20 and the terminal 30 through the slot resource in the frame.
It should be noted that fig. 2 is only an exemplary framework diagram, the number of nodes included in fig. 2 is not limited, and other nodes may be included besides the functional nodes shown in fig. 2, such as: core network devices, gateway devices, application servers, etc., without limitation.
The access network device 10 is mainly used to implement functions of resource scheduling, radio resource management, radio access control, and the like of the terminal. Specifically, the access network device 10 may be any one of a small base station, a wireless access point, a transmission point (TRP), a Transmission Point (TP), and some other access node.
The terminal may be a terminal (terminal equipment) or a User Equipment (UE) or a Mobile Station (MS) or a Mobile Terminal (MT), etc. Specifically, the terminal may be a mobile phone (mobile phone), a tablet computer or a computer with a wireless transceiving function, and may also be a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city (smart city), a smart home, a vehicle-mounted terminal, and the like. In the embodiment of the present application, the apparatus for implementing the function of the terminal may be the terminal, or an apparatus capable of supporting the terminal to implement the function, for example, a chip system. The following describes an interference processing method provided in an embodiment of the present application, by taking a device for implementing a function of a terminal as an example.
In particular, the apparatus of fig. 2 may adopt the structure shown in fig. 3, or include the components shown in fig. 3. Fig. 3 is a schematic composition diagram of a communication apparatus 300 according to an embodiment of the present application, where the communication apparatus 300 may be the access network device 10 or a chip or a system on chip in the access network device 10. As shown in fig. 3, the communication device 300 includes a processor 301, a communication interface 302, and a communication line 303.
Further, the communication device 300 may further include a memory 304. The processor 301, the memory 304 and the communication interface 302 may be connected by a communication line 303.
The processor 301 is a CPU, a general purpose processor Network (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The processor 301 may also be other devices with processing function, such as a circuit, a device or a software module, without limitation.
A communication interface 302 for communicating with other devices or other communication networks. The other communication network may be an ethernet, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), or the like. The communication interface 302 may be a module, a circuit, a communication interface, or any device capable of enabling communication.
A communication line 303 for transmitting information between the respective components included in the communication apparatus 300.
A memory 304 for storing instructions. Wherein the instructions may be a computer program.
The memory 304 may be a read-only memory (ROM) or other types of static storage devices that can store static information and/or instructions, a Random Access Memory (RAM) or other types of dynamic storage devices that can store information and/or instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disc storage medium or other magnetic storage devices, and the like, without limitation.
It is noted that the memory 304 may exist separately from the processor 301 or may be integrated with the processor 301. The memory 304 may be used for storing instructions or program code or some data or the like. The memory 304 may be located inside the communication device 300 or outside the communication device 300, which is not limited. The processor 301 is configured to execute the instructions stored in the memory 304 to implement the measurement method provided by the following embodiments of the present application.
In one example, the processor 301 may include one or more CPUs, such as CPU0 and CPU1 in fig. 3.
As an alternative implementation, the communication device 300 may comprise a plurality of processors, for example, the processor 307 may be included in addition to the processor 301 in fig. 3.
As an alternative implementation, the communication apparatus 300 further includes an output device 305 and an input device 306. Illustratively, the input device 306 is a keyboard, mouse, microphone, or joystick-like device, and the output device 305 is a display screen, speaker (spaker), or like device.
It is noted that the communication apparatus 300 may be a desktop computer, a portable computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system or a device with a similar structure as that in fig. 3. Further, the constituent structures shown in fig. 3 do not constitute limitations of the terminal, and the terminal may include more or less components than those shown in fig. 3, or may combine some components, or a different arrangement of components, in addition to the components shown in fig. 3.
In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.
In addition, acts, terms, and the like referred to between the embodiments of the present application may be mutually referenced and are not limited. In the embodiment of the present application, the name of the message exchanged between the devices or the name of the parameter in the message, etc. are only an example, and other names may also be used in the specific implementation, which is not limited.
In addition, the communication system described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation to the technical solution provided in the embodiment of the present application, and it is known by a person of ordinary skill in the art that the technical solution provided in the embodiment of the present application is also applicable to similar technical problems with the evolution of network architecture and the appearance of new communication systems.
At present, the following methods 1 and 2 are mainly used as methods for handling the above-mentioned serious cross interference between adjacent access network devices.
The method comprises the following steps: physical isolation, i.e. increasing the degree of isolation in the physical space between two access network devices.
For example, the degree of isolation in physical space between two access network devices may be increased by reducing the coverage overlap between the two access network devices.
As another example, the degree of separation in physical space between two access network devices may be increased by increasing the distance between the two access network devices.
Problems with method 1: increasing the degree of isolation in physical space between two access network devices has significant scenario limitations in the implementation.
The method 2, according to the frame of the adjacent access network equipment, determining the downlink time slot which may interfere with other access network equipment between the adjacent access network equipment; and when the interference of the downlink time slot to other access network equipment is large, closing the downlink time slot.
Problems with method 2: the method 2 can reduce the utilization rate of time-frequency resources, and further greatly reduce the downlink capacity of the access network equipment. That is, although the method 2 can reduce the cross interference, the method 2 may also have a large impact on other indicators (e.g., the utilization rate of the time-frequency resource).
In order to solve the problems in the prior art, an embodiment of the present application provides an interference processing method, which can conveniently and effectively reduce cross interference. As shown in fig. 4, the method includes:
s401, the access network equipment determines a plurality of uplink time slots in a frame of the access network equipment and determines the received noise power of each uplink time slot in the plurality of uplink time slots.
It should be noted that the plurality of uplink timeslots may be all or a part of the uplink timeslots in one frame. The access network device may receive the uplink signal from the terminal device in any one of the plurality of uplink timeslots.
In a possible implementation manner, the specific implementation process of determining the received noise power of each uplink timeslot in the plurality of uplink timeslots in S401 may be determined through the following steps a and b.
Step a, determining M frames of the access network equipment in a preset time period, wherein each frame of the M frames comprises N uplink time slots, and the positions of the uplink time slots in each frame are the same.
And step b, determining the received noise power of the a-th uplink time slot in the N uplink time slots to be the average value of the received noise power of the a-th uplink time slot in each frame in the M frames.
Wherein a, M and N are positive integers, and a is less than or equal to N.
S402, the access network equipment determines the interference influence parameters of the access network equipment according to the received noise power of each uplink time slot and the number of time-frequency resources occupied by the access channel of each terminal equipment in at least one terminal equipment in each uplink time slot.
In a possible implementation manner, the interference influencing parameter of the access network device satisfies the following formula 1:
q is an interference influence parameter;
i is the ith uplink time slot; p i The received noise power of the ith uplink time slot; p SL A first threshold value for received noise power; t is t i The average value of the number of time frequency resources occupied by at least one terminal device in the ith uplink time slot is obtained; r is the total number of uplink time slots in the frame; wherein i and r are positive integers, and i is not more than r.
In addition, the above P SL Is preset for operators according to actual conditions. Exemplary, P SL May be-105 dBm.
Exemplary, t i The average value of the number of time frequency resources occupied by at least one terminal device in the ith uplink time slot is obtained; t is t j Is the average value of the number of the time frequency resources occupied by at least one terminal device in the jth uplink time slot. t is t i And t j As shown in table 2 below.
It should be noted that YY in the collection time stamp in table 2 represents year; NN represents a month; DD characterization day; HH characterization hour; and the SS represents seconds, and at least one preset time period for acquiring the number of resources occupied on the uplink time slot when the terminal equipment is accessed to the channel is formed by the acquisition time stamps.
And S403, the access network equipment determines a target uplink time slot according to the received noise power of each uplink time slot.
The target uplink time slot is an uplink time slot which meets a preset condition in the plurality of uplink time slots.
It should be noted that, if the value obtained by subtracting the received noise power of any other timeslot from the received noise power of the uplink timeslot is greater than the fifth threshold, and the received noise power of the uplink timeslot is greater than the first threshold, the access network device determines that the uplink timeslot meets the preset condition, and further determines that the uplink timeslot is the target uplink timeslot.
S404, the access network equipment adjusts at least one of the target power of an uplink access signal detection threshold of an access channel of the access network equipment and the modulation coding level of a signaling message of the access channel of the access network equipment according to the received noise power and the interference influence parameter of the target uplink time slot.
And the received noise power of the target uplink time slot is used for comparing with a threshold value, and further judging which processing mode is carried out by the interference of the access network equipment.
It should be noted that, when the access network device is interfered, the effect of reducing the interference of the access network device can be achieved by increasing the target power of the uplink access signal detection threshold of the access channel of the access network device and/or decreasing the modulation coding level of the signaling message of the access channel of the access network device. The above interference noise power is used to determine how much the target power of the uplink access signal detection threshold of the access channel of the access network device needs to be adjusted (i.e. the target offset power), and is also used to determine how much the modulation coding level of the signaling message of the access channel of the access network device needs to be adjusted (i.e. the target offset value).
It should be noted that the uplink Access signal is a preamble sequence of a Physical Access Channel (PRACH). The PRACH is an access channel when the terminal starts to initiate a call, and after receiving the response message, the terminal sends a radio resource control Connection Request (RRC Connection Request message) on the PRACH according to information indicated by the base station, and establishes an RRC Connection.
It should be noted that, in the third message (message 3, Msg3) in the access procedure, the Msg3 message may include the following contents, such as RRC Connection Request, radio resource control Connection reconfiguration Complete (RRC Connection reconfiguration Complete), radio resource control Connection reconfiguration Request (radio resource control Connection reconfiguration Request, RRC Connection reconfiguration Request), and uplink information transfer (uplink information transfer).
The application provides an interference processing method, and access network equipment adjusts the target power of an uplink access signal detection threshold of an access channel of the access network equipment and/or the modulation coding level of a signaling message of the access channel of the access network equipment through interference parameters, so that the interference of an uplink time slot of the access network equipment can be conveniently and effectively reduced under the condition of not causing great influence on other indexes. In addition, the interference parameter of the access network device is determined according to the received noise power of each uplink time slot and the number of time-frequency resources occupied by the access channel of each terminal device in at least one terminal device in each uplink time slot, so that the actual use condition of the uplink time slot of the access network device is fully considered, the interference parameter determined by the access network device is more practical, and further, the target power of the uplink access signal detection threshold of the access channel of the access network device and/or the modulation coding level adjustment of the signaling message of the access channel of the access network device can be more effective.
In a possible implementation manner, as shown in fig. 5 in conjunction with fig. 4, the above S404 specifically includes the following cases 1.1 and 1.2. The following are specifically described below:
case 1.1: the received noise power of the target uplink time slot is larger than a first threshold value and smaller than a second threshold value. In case 1.1, S404 described above can be specifically determined by S501 to S502 below.
S501, the access network equipment determines the target bias power of the access network equipment according to the interference influence parameters.
In one possible implementation, the target bias power of the access network device satisfies the following equation 2:
P c is a target bias power; p cl Is the lowest target bias power value, P ch Is the highest target bias power value, P SL Is a first threshold value, P SH Q is a second threshold value, and is a disturbance influencing parameter.
In addition, the above P cl 、P ch 、P SH All are preset by operators according to actual conditions. Exemplary, P cl May be 2 dB; p is ch May be 10 dB; p SH May be-95 dBm.
S502, the access network equipment adjusts the target power of an uplink access signal detection threshold of an access channel of the access network equipment according to the target bias power of the access network equipment.
It should be noted that, when the uplink timeslot of the access network device is subjected to relatively strong interference, the access network device may reduce the interference by increasing the target power of the uplink access signal detection threshold of the access channel of the access network device, but the target power of the uplink access signal detection threshold of the access channel of the access network device cannot be increased without limitation, and if the target power is increased continuously, other indicators (e.g., network speed) may be affected. Therefore, the target power of the uplink access signal detection threshold of the access channel of the access network device needs to be adjusted within a certain range, and the target power of the uplink access signal detection threshold of the access channel of the access network device after adjustment cannot exceed the maximum target power of the access network device.
Case 1.2: and the received noise power of the target uplink time slot is greater than the second threshold value. In case 1.2, S404 described above can be specifically determined by S503 and S504 below.
S503, the access network equipment determines that the highest target bias power value of the access network equipment is the target bias power of the access network equipment.
In combination with the above, it can be known that the target power of the uplink access signal detection threshold of the access channel of the access network device cannot be increased without limitation, and further it can be known that the target bias power of the access network device cannot be increased without limitation, therefore, when the received noise power of the target uplink timeslot is greater than the second threshold, the access network device can directly set the highest target bias power value of the access network device as the target bias power of the access network device, and continuously increase the target bias power of the access network device according to the above formula 2, so that the operation of increasing the target bias power of the access network device does not cause too great influence on other indexes of the access network device, and further the stability of the network is ensured to a certain extent.
S504, the access network equipment adjusts the target power of an uplink access signal detection threshold of an access channel of the access network equipment according to the target bias power of the access network equipment.
The application provides an interference processing method, when the received noise power of a target uplink time slot of an access network device is greater than a first threshold value and smaller than a second threshold value, the access network device determines the target bias power of the access network device according to an interference influence parameter (namely, the target bias power of the access network device is calculated by adopting an adaptive method in an interval greater than the first threshold value and smaller than the second threshold value); when the received noise power of the target uplink time slot is greater than the second threshold value, the target offset power of the access network device is directly determined according to the highest target offset power value of the access network device (namely, when the received noise power of the target uplink time slot is greater than the second threshold value, the target offset power of the access network device is calculated by adopting an adaptive method), so that the interference on the uplink time slot of the access network device can be effectively reduced, the operation of increasing the target offset power of the access network device cannot cause great influence on other indexes of the access network device, and further, the stability of the network is ensured to a certain extent.
In a possible implementation manner, as shown in fig. 6 in conjunction with fig. 4, the above S404 specifically includes the following cases 2.1 and 2.2. The following are specifically described below:
case 2.1: and the received noise power of the target uplink time slot is greater than the third threshold value and smaller than the fourth threshold value. In case 2.1, S404 described above can be specifically determined by S601 to S602 below.
S601, the access network equipment determines the offset value of the access network equipment according to the interference influence parameter.
In a possible implementation manner, the offset value of the access network device satisfies the following formula 3:
Offset MCS is a bias value; m l Is the lowest bias value for down regulation; m h The highest bias value for down regulation; p SM Is a third threshold value; p SN Is a fourth threshold value; q is an interference influencing parameter.
In addition, M is as defined above l 、M h 、P SM 、P SN Are all preset by operators according to actual conditions. Exemplary, M l Can be 2, M h Can be 25; p SM Can be-95 dBm, P SN May be-75 dBm.
S602, the access network equipment adjusts the modulation coding level of the signaling message of the access channel of the access network equipment according to the bias value of the access network equipment.
It should be noted that, when the uplink timeslot of the access network device receives stronger interference, the level of the modulation and coding scheme of the access network device may be reduced to reduce the interference, and improve the reliability of the access network device. However, the modulation and coding level of the signaling message of the access channel of the access network device cannot be adjusted down by a large amount, for example, if the modulation and coding level of the signaling message of the access channel of the access network device is adjusted down by a large amount, other indexes (e.g., the network speed) are affected. Therefore, adjustment of the offset value of the access network device needs to be adjusted conservatively, and the modulation and coding level of the signaling message of the access channel of the access network device after adjustment is at least 0.
Case 2.2: and the received noise power of the target uplink time slot is greater than the fourth threshold value. In case 2.2, S404 described above can be specifically determined by S603 and S604 below.
S603, the access network equipment determines that the adjusted-down highest bias value of the access network equipment is the bias value of the access network equipment.
By combining the above, it can be known that the modulation coding level of the signaling message of the access channel of the access network device cannot be adjusted down without limit, and further it can be known that the offset value of the access network device cannot be adjusted down without limit, therefore, when the received noise power of the target uplink timeslot is greater than the fourth threshold, the access network device can directly set the highest offset value of the down-regulation of the access network device as the offset value of the access network device, and continuously adjust the offset value of the access network device according to the above formula 3, so that the operation of adjusting the offset value of the access network device cannot cause too great influence on other indexes of the access network device, and further the stability of the network is ensured to a certain extent.
S604, the access network equipment adjusts the modulation coding level of the signaling message of the access channel of the access network equipment according to the bias value of the access network equipment.
When the received noise power of a target uplink time slot of access network equipment is greater than a fourth threshold value, directly determining the target bias power of the access network equipment according to the down-regulated highest bias value of the access network equipment (namely, when the received noise power of the target uplink time slot of the access network equipment is greater than the fourth threshold value, calculating the target bias power of the access network equipment by adopting an adaptive method); when the received noise power of the target uplink time slot is greater than the third threshold and smaller than the fourth threshold, determining the offset value of the access network device according to the interference influence parameter (i.e. calculating the offset value of the access network device by adopting an adaptive method in an interval greater than the third threshold and smaller than the fourth threshold), so that the interference on the uplink time slot of the access network device can be effectively reduced; and the operation of increasing the target bias power of the access network equipment can not cause too large influence on other indexes of the access network equipment, so that the stability of the network is ensured to a certain extent.
In a possible implementation manner, referring to fig. 4, as shown in fig. 7, the above S403 may be specifically determined through the following S701 to S703.
S701, the access network equipment determines the received noise power P of the ith uplink time slot in the N uplink time slots i 。
In combination with the above example, the received noise power P of the ith uplink timeslot i Is the average value of the received noise power of the ith uplink time slot of each frame in the M frames in the preset time period.
S702, the access network equipment determines the received noise power P of the jth uplink time slot in N uplink time slots j 。
In combination with the above example, the received noise power P of the jth uplink slot j Is the average value of the received noise power of the jth uplink time slot of each frame in the M frames in the preset time period.
Exemplary, P i And P j Can be obtained as shown in table 3 below.
TABLE 3
It should be noted that YY in the collection time stamp in table 3 represents year; NN represents a month; DD characterization day; HH characterization hour; and the SS represents seconds, and a plurality of the acquisition timestamps form a preset time period for acquiring the uplink received noise power.
S703, the access network equipment is in P i And P j Is greater than a fifth threshold value, and P i And determining the ith uplink time slot of the N uplink time slots as the target uplink time slot when the number of the uplink time slots is larger than the first threshold value.
Wherein i and j are positive integers, i is less than or equal to N, and j is less than or equal to N.
The application provides an interference processing method, before the access network equipment processes interference, a target interference time slot needs to be screened, if the target time slot cannot be screened, it is determined that the interference of the access network equipment does not need to be processed, that is, before the access network equipment processes the interference, whether the interference of the access network equipment needs to be processed or not is judged firstly, so that the interference processing of the access network equipment can be more actually fitted, and the interference of the access network equipment can be better processed.
It is understood that the interference processing method described above can be implemented by an interference processing apparatus. In order to implement the above functions, the interference processing device includes a hardware structure and/or a software module that performs each function. Those of skill in the art will readily appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed in hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments disclosed herein.
The interference processing apparatus generated according to the method example in the embodiments disclosed in the present application may divide the functional modules, for example, each functional module may be divided according to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiments disclosed in the present application is schematic, and is only one division of logic functions, and there may be another division manner in actual implementation.
Fig. 8 is a schematic structural diagram of an interference processing apparatus according to an embodiment of the present invention. As shown in fig. 8, the interference processing apparatus 80 may be configured to perform the interference processing methods shown in fig. 4-7. The interference processing apparatus 80 includes a communication unit 801 and a processing unit 802.
A communication unit 801, configured to determine a plurality of uplink timeslots in a frame of an access network device, and determine a received noise power of each uplink timeslot in the plurality of uplink timeslots.
A processing unit 802, configured to determine an interference impact parameter of an access network device according to the received noise power of each uplink timeslot and the number of time-frequency resources occupied by an access channel of each terminal device in at least one terminal device in each uplink timeslot; determining a target uplink time slot according to the received noise power of each uplink time slot; and adjusting at least one of the target power of an uplink access signal detection threshold of an access channel of the access network equipment and the modulation coding level of a signaling message of the access channel of the access network equipment according to the received noise power and the interference influence parameters of the target uplink time slot.
In a possible implementation manner, the processing unit 802 is specifically configured to: when the received noise power of the target uplink time slot is larger than a first threshold value and smaller than a second threshold value, determining the target bias power of the access network equipment according to the interference influence parameter; and adjusting the target power of an uplink access signal detection threshold of an access channel of the access network equipment according to the target bias power of the access network equipment.
In the case of implementing the functions of the integrated modules in the form of hardware, the embodiment of the present invention provides another possible structural schematic diagram of the electronic device related to the above embodiment. As shown in fig. 9, electronic device 90 may include a processor 901 and a communication interface 902. Processor 901 is coupled to a communication interface 902.
The functions of the processor 901 may refer to the description of the processor 901 above. The processor 901 also has a memory function, and the function of the memory 902 can be referred to.
The communication interface 902 is used to provide data to the processor 901. The communication interface 902 may be an internal interface of the communication device, or may be an external interface (corresponding to the communication interface 904) of the communication device.
It is noted that the configuration shown in fig. 9 does not constitute a limitation of the electronic device 90, and that the electronic device 90 may include more or less components than those shown in fig. 9, or may combine some components, or a different arrangement of components, in addition to the components shown in fig. 9.
Through the above description of the embodiments, it is clear for a person skilled in the art that, for convenience and simplicity of description, only the division of the above functional units is illustrated. In practical applications, the above function allocation can be performed by different functional units according to needs, that is, the internal structure of the device is divided into different functional units to perform 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 embodiment of the present invention further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed by a computer, the computer executes each step in the method flow shown in the above method embodiment.
Embodiments of the present invention provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of determining rich media in the above-described method embodiments.
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, and a hard disk. Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read-Only Memory (EPROM), registers, a hard disk, an optical fiber, a portable Compact disk Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any other form of computer-readable storage medium, in any suitable combination, or as appropriate 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 invention, 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.
Since the apparatus, the device, the computer-readable storage medium, and the computer program product in the embodiments of the present invention may be applied to the method described above, for technical effects obtained by the apparatus, the computer-readable storage medium, and the computer program product, reference may also be made to the method embodiments described above, and details of the embodiments of the present invention are not repeated herein.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions within the technical scope of the present invention are intended to be covered by the scope of the present invention.
Claims (11)
1. An interference processing method, comprising:
determining a plurality of uplink time slots in a frame of access network equipment, and determining the received noise power of each uplink time slot in the plurality of uplink time slots;
determining an interference influence parameter of the access network equipment according to the received noise power of each uplink time slot and the number of time-frequency resources occupied by an access channel of each terminal equipment in at least one terminal equipment in each uplink time slot;
determining a target uplink time slot according to the received noise power of each uplink time slot; the target uplink time slot is an uplink time slot which meets a preset condition in the plurality of uplink time slots;
adjusting the target power of an uplink access signal detection threshold of an access channel of the access network equipment and the modulation coding level of a signaling message of the access channel of the access network equipment or the modulation coding level of the signaling message of the access channel of the access network equipment according to the received noise power of the target uplink time slot and the interference influence parameter;
wherein, adjusting the modulation coding level of the signaling message of the access channel of the access network device according to the received noise power of the target uplink timeslot and the interference influence parameter includes:
when the received noise power of the target uplink time slot is larger than a third threshold value and smaller than a fourth threshold value, determining a bias value of the access network equipment according to the interference influence parameter;
adjusting the modulation coding level of a signaling message of an access channel of the access network equipment according to the offset value of the access network equipment;
the bias value of the access network equipment satisfies the following formula:
the Offset MCS Is the bias value; the M is l Is the lowest bias value for down regulation; the M is h The highest bias value for down regulation; said P is SM A third threshold value for received noise power; p SN A fourth threshold value for received noise power; the Q is the interference affecting parameter.
2. The method of claim 1, wherein the adjusting the target power of the uplink access signal detection threshold of the access channel of the access network device according to the received noise power of the target uplink timeslot and the interference impact parameter comprises:
when the received noise power of the target uplink time slot is larger than a first threshold value and smaller than a second threshold value, determining the target bias power of the access network equipment according to the interference influence parameter;
and adjusting the target power of an uplink access signal detection threshold of an access channel of the access network equipment according to the target bias power of the access network equipment.
3. The method of claim 1, wherein the adjusting the target power of the uplink access signal detection threshold of the access channel of the access network device according to the received noise power of the target uplink timeslot and the interference impact parameter comprises:
when the received noise power of the target uplink time slot is greater than a second threshold value, determining the highest target offset power value of the access network equipment as the target offset power of the access network equipment;
and adjusting the target power of an uplink access signal detection threshold of an access channel of the access network equipment according to the target bias power of the access network equipment.
4. The method of claim 1, wherein the adjusting the target power of the uplink access signal detection threshold of the access channel of the access network device according to the received noise power of the target uplink timeslot and the interference impact parameter comprises:
when the received noise power of the target uplink time slot is greater than a fourth threshold value, determining the reduced highest bias value of the access network equipment as the bias value of the access network equipment;
and adjusting the modulation coding level of the signaling message of the access channel of the access network equipment according to the offset value of the access network equipment.
5. The method of claim 1, wherein the determining the received noise power for each of the plurality of uplink timeslots comprises:
determining M frames of the access network equipment in a preset time period, wherein each frame of the M frames comprises N uplink time slots, and the positions of the uplink time slots in each frame are the same;
determining the received noise power of the a-th uplink time slot in the N uplink time slots to be the average value of the received noise power of the a-th uplink time slot of each frame in the M frames; wherein a, M and N are positive integers, and a is less than or equal to N.
6. The method of claim 2, wherein the determining a target uplink timeslot according to the received noise power of each uplink timeslot comprises:
determining the received noise power P of the ith uplink time slot in N uplink time slots i ；
Determining the received noise power P of the jth uplink time slot in the N uplink time slots j ；
At P i And P j Is greater than a fifth threshold value, and P i When the value is larger than a first threshold value, determining the ith uplink time slot in the N uplink time slots as a target uplink time slot; wherein i and j are positive integers, i is less than or equal to N, and j is less than or equal to N.
7. The method of claim 5, wherein the interference affecting parameter of the access network device satisfies the following equation 1:
q is the interference impact parameter;
the above-mentioned
The i is the ith uplink time slot; the P is i The received noise power of the ith uplink time slot; the P is SL A first threshold value for received noise power; said t is i The average value of the number of time frequency resources occupied by the at least one terminal device in the ith uplink time slot is obtained; the r is the total number of uplink time slots in the frame; wherein i and r are positive integers, and i is not more than r;
the target bias power of the access network equipment meets the following formula 2:
said P is c Is the target bias power; the P is cl Is the lowest target bias power value; said P is ch Is the highest target bias power value; p SH Is a second threshold value of the received noise power.
8. An interference processing apparatus, comprising: a communication unit and a processing unit;
the communication unit is configured to determine a plurality of uplink timeslots in a frame of an access network device, and determine a received noise power of each uplink timeslot in the plurality of uplink timeslots;
the processing unit is configured to determine an interference impact parameter of the access network device according to the received noise power of each uplink timeslot and the number of time-frequency resources occupied by an access channel of each terminal device in at least one terminal device in each uplink timeslot;
the processing unit is further configured to determine a target uplink timeslot according to the received noise power of each uplink timeslot; the target uplink time slot is an uplink time slot which meets a preset condition in the plurality of uplink time slots;
the processing unit is further configured to adjust a target power of an uplink access signal detection threshold of an access channel of the access network device and a modulation and coding level of a signaling message of the access channel of the access network device, or a modulation and coding level of a signaling message of the access channel of the access network device, according to the received noise power of the target uplink timeslot and the interference influence parameter;
wherein the processing unit is specifically configured to: when the received noise power of the target uplink time slot is larger than a third threshold value and smaller than a fourth threshold value, determining a bias value of the access network equipment according to the interference influence parameter; adjusting the modulation coding level of a signaling message of an access channel of the access network equipment according to the offset value of the access network equipment;
the bias value of the access network equipment satisfies the following formula:
the Offset MCS Is the bias value; the M is l Is the lowest bias value for down regulation; the M is h The highest bias value for down regulation; the P is SM A third threshold value for received noise power; p SN A fourth threshold value for received noise power; the Q is the interference impact parameter.
9. The apparatus according to claim 8, wherein the processing unit is specifically configured to:
when the received noise power of the target uplink time slot is larger than a first threshold value and smaller than a second threshold value, determining the target bias power of the access network equipment according to the interference influence parameter;
and adjusting the target power of an uplink access signal detection threshold of an access channel of the access network equipment according to the target bias power of the access network equipment.
10. An interference processing apparatus, comprising: a processor and a communication interface; the communication interface is coupled to the processor for executing a computer program or instructions for implementing the interference handling method as claimed in any one of claims 1-7.
11. A computer-readable storage medium having instructions stored thereon, wherein the instructions, when executed by a computer, cause the computer to perform the interference handling method of any one of claims 1-7.
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