CN110958613A - Atmospheric waveguide interference processing method, device, base station and communication system - Google Patents
Atmospheric waveguide interference processing method, device, base station and communication system Download PDFInfo
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- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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Abstract
The invention provides an atmospheric waveguide interference processing method, an atmospheric waveguide interference processing device, a base station, a communication system and a storage medium, wherein the method comprises the following steps: acquiring first detection information corresponding to a first edge PRB positioned at the edge of a first carrier and second detection information corresponding to a center PRB positioned at the center of the first carrier, judging whether adjacent channel interference detection is needed, if so, performing energy detection on a second edge PRB positioned at the edge of the second carrier and close to the first edge PRB, judging whether the adjacent channel atmospheric waveguide interference exists, if so, sending interference detection information, and performing interference avoidance processing based on interference avoidance configuration information issued by a network management system; the method, the device, the base station, the communication system and the storage medium can solve the problem that the uplink receiving of the base station side is greatly influenced by the adjacent-frequency atmospheric waveguide interference, give consideration to the time-frequency resource overhead and the scheme complexity, and can be effectively applied to the current network of an operator.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an atmospheric waveguide interference processing method, an apparatus, a base station, a communication system, and a storage medium.
Background
Atmospheric waveguide effect can be formed under certain meteorological conditions, and downlink signals transmitted by a remote interference-applying base station can be transmitted to a remote place through the atmosphere and are still strong. When the distance between the interfered base station and the interfering base station exceeds a certain distance, for a TDD system, in the conversion process from downlink transmission to uplink reception, a signal of a time slot at the tail end of a downlink subframe reaches the interfered base station at the initial time slot of the uplink subframe through long-distance transmission, and interference is generated on the uplink reception of the interfered base station. Fig. 1 shows a schematic diagram of atmospheric waveguide interference, and a long-distance interference caused by an atmospheric waveguide phenomenon in a TD-LTE network has the characteristics of wide influence range, strong interference randomness, high interference intensity and the like, and causes different degrees of adverse effects on the existing network KPI (call completing rate, call dropping rate, handover success rate), thereby seriously affecting user perception.
For atmospheric waveguide interference, the prior art only considers a TDD single frequency network scenario, and only can solve the same frequency atmospheric waveguide interference. In the existing solution for atmospheric waveguide interference with the same frequency, a base station side detects and positions atmospheric waveguide interference by adopting a special characteristic sequence according to uplink interference characteristics, and avoids the interference according to a detection result. At present, a base station can only detect the characteristic sequence of the same-frequency carrier, but cannot detect the characteristic sequence of an adjacent-frequency carrier, so that the existing same-frequency atmospheric waveguide interference detection scheme is not suitable for adjacent-frequency interference detection.
Disclosure of Invention
One or more embodiments of the present invention provide an atmospheric waveguide interference processing method, an apparatus, a base station, a communication system, and a storage medium.
According to an aspect of the present invention, there is provided an atmospheric waveguide interference processing method, including: obtaining first detection information corresponding to a first edge PRB positioned at the edge of a first carrier and second detection information corresponding to a center PRB positioned at the center of the first carrier; the first carrier is a base station working carrier; judging whether the adjacent channel interference detection is needed or not based on a preset first judgment rule and according to a comparison result of the first detection information and the second detection information; if so, performing energy detection on a second edge PRB which is located at the edge of a second carrier and is close to the first edge PRB, and judging whether the first carrier is interfered by the adjacent-frequency atmospheric waveguide or not based on a preset second judgment rule and according to the energy detection result; the second carrier is a base station working carrier adjacent to the first carrier on a frequency domain; and if so, obtaining interference detection information and sending the interference detection information to a network management system, and carrying out interference avoidance processing based on interference avoidance configuration information sent by the network management system.
Optionally, the determining, based on a preset first decision rule and according to a comparison result between the first detection information and the second detection information, whether the adjacent channel interference detection needs to be performed includes: respectively obtaining a first wireless measurement index and a second wireless measurement index in the first detection information and the second detection information, wherein the first wireless measurement index and the second wireless measurement index include: RSSI and uplink SINR; judging whether the first wireless measurement index is deteriorated relative to the second wireless measurement index, and if so, determining that adjacent channel interference detection is required; wherein the measurement indicator deterioration comprises: the RSSI rises and the uplink SINR falls.
Optionally, all uplink symbols in the special time slot on the first edge PRB and the central PRB and in the first uplink subframe after the special time slot are detected respectively, so as to obtain the first detection information and the second detection information.
Optionally, the determining, based on a preset second determination rule and according to the energy detection result, whether the first carrier is interfered by the adjacent-channel atmospheric waveguide includes: obtaining energy intensity information corresponding to the second edge PRB; and judging whether the energy intensity information exceeds a preset energy intensity threshold value, and if so, determining that the first carrier is interfered by the adjacent-channel atmospheric waveguide.
Optionally, the obtaining energy intensity information corresponding to the second edge PRB includes: and performing energy detection on the special time slot in the second edge PRB and all uplink symbols in the first uplink subframe after the special time slot to obtain the energy intensity information.
Optionally, the interference detection information includes: the interfered uplink symbol information, the resource information of the first edge PRB and the energy intensity information in the first edge PRB; and sending the interference detection information to the wireless network management system.
Optionally, the performing interference avoidance processing based on the interference avoidance configuration information issued by the network management system includes: adjusting symbol configuration of a wireless frame based on the interference avoidance configuration information; wherein, the interference avoidance configuration information is set by the integrated network management or the wireless network management.
Optionally, the interference avoidance configuration information includes: symbol configuration information of the special time slot; wherein the symbol configuration information of the special time slot includes: an increased number of GP symbols in the special time slot, a decreased number of downlink symbols in the special time slot.
Optionally, the adjusting the symbol configuration of the radio frame based on the interference avoidance configuration information includes: expanding GP symbols and reducing downlink symbols in a special time slot in the first edge PRB based on the increased number of GP symbols and the reduced number of downlink symbols; wherein the increased number of GP symbols and the decreased number of downlink symbols are both the number of interfered uplink symbols in the first edge PRB.
Optionally, the wireless network manager positions an interfering base station in the jurisdiction according to the interference detection information, and if the interfering base station can be positioned, the wireless network manager sets the interference avoidance configuration information according to the number of interfered uplink symbols in the first edge PRB and sends the interference avoidance configuration information to the interfered base station and the interfering base station; and if the interference base station cannot be positioned, the wireless network management system sends the interference detection information to a comprehensive network management system, the comprehensive network management system positions the interference base station in the whole network range, sets the interference avoidance configuration information according to the number of interfered uplink symbols in the first edge PRB, and sends the interference avoidance configuration information to the interfered base station and the interference base station.
According to another aspect of the present invention, there is provided an atmospheric waveguide interference processing apparatus including: the wireless signal detection module is used for obtaining first detection information corresponding to a first edge PRB positioned at the edge of a first carrier and second detection information corresponding to a center PRB positioned at the center of the first carrier; the first carrier is a base station working carrier; the detection information judgment module is used for judging whether the adjacent channel interference detection is required or not based on a preset first judgment rule and according to a comparison result of the first detection information and the second detection information; the adjacent frequency energy detection module is used for detecting the energy of a second edge PRB which is positioned at the edge of a second carrier and is adjacent to the first edge PRB if the first edge PRB is adjacent to the second carrier; the second carrier is a base station working carrier adjacent to the first carrier on a frequency domain; the guided wave interference judgment model is used for judging whether the first carrier wave is interfered by the adjacent-frequency atmospheric waveguide based on a preset second judgment rule and according to the energy detection result; the interference information reporting module is used for obtaining the interference detection information and sending the interference detection information to the network management system if the interference detection information is positive; and the interference avoidance processing module is used for carrying out interference avoidance processing based on the interference avoidance configuration information issued by the network management system.
Optionally, the detection information determining module is configured to obtain a first wireless measurement indicator and a second wireless measurement indicator in the first detection information and the second detection information, respectively, where the first wireless measurement indicator and the second wireless measurement indicator include: RSSI and uplink SINR; judging whether the first wireless measurement index is deteriorated relative to the second wireless measurement index, and if so, determining that adjacent channel interference detection is required; wherein the measurement indicator deterioration comprises: the RSSI rises and the uplink SINR falls.
Optionally, the wireless signal detection module is configured to detect all uplink symbols in a special time slot on the first edge PRB and the center PRB and in a first uplink subframe located after the special time slot, respectively, to obtain the first detection information and the second detection information.
Optionally, the guided wave interference decision model is configured to obtain energy intensity information corresponding to the second edge PRB; and judging whether the energy intensity information exceeds a preset energy intensity threshold value, and if so, determining that the first carrier is interfered by the adjacent-channel atmospheric waveguide.
Optionally, the adjacent channel energy detection module is configured to perform energy detection on the special time slot in the second edge PRB and all uplink symbols in the first uplink subframe after the special time slot, so as to obtain the energy intensity information.
Optionally, the interference detection information includes: the interfered uplink symbol information, the resource information of the first edge PRB and the energy intensity information in the first edge PRB; and the interference information reporting module is used for sending the interference detection information to the wireless network management system to which the interference detection information belongs.
Optionally, the interference avoidance processing module is configured to adjust a symbol configuration of a radio frame based on the interference avoidance configuration information; wherein, the interference avoidance configuration information is set by the integrated network management or the wireless network management.
Optionally, the interference avoidance configuration information includes: symbol configuration information of the special time slot; wherein the symbol configuration information of the special time slot includes: an increased number of GP symbols in the special time slot, a decreased number of downlink symbols in the special time slot.
Optionally, the interference avoidance processing module is configured to expand GP symbols and reduce downlink symbols in a special timeslot in the first edge PRB based on the increased number of GP symbols and the reduced number of downlink symbols; wherein the increased number of GP symbols and the decreased number of downlink symbols are both the number of interfered uplink symbols in the first edge PRB.
According to still another aspect of the present invention, there is provided an atmospheric waveguide interference processing apparatus including: a memory; and a processor coupled to the memory, the processor configured to perform the method as described above based on instructions stored in the memory.
According to still another aspect of the present invention, there is provided a base station including: the atmospheric waveguide interference processing device as described above.
According to yet another aspect of the invention, there is provided a computer readable storage medium having stored thereon computer program instructions which, when executed by one or more processors, implement the steps of the method as described above.
According to still another aspect of the present invention, there is provided a communication system including: the base station, the wireless network management system and the integrated network management system are described above.
Optionally, the wireless network manager positions an interfering base station in the jurisdiction range according to the interference detection information uploaded by the interfered base station, and if the interfering base station can be positioned, the wireless network manager sets interference avoidance configuration information and issues the interference avoidance configuration information to the interfered base station and the interfering base station.
Optionally, if the wireless network management system cannot locate the interfering base station, sending the interference detection information to the comprehensive network management system, where the comprehensive network management system locates the interfering base station in the whole network range, sets interference avoidance configuration information, and sends the interference avoidance configuration information to the interfered base station and the interfering base station.
The atmospheric waveguide interference processing method, the device, the base station, the communication system and the storage medium can solve the problem that the uplink receiving at the base station side is greatly influenced by the adjacent-frequency atmospheric waveguide interference, and the adjacent-frequency atmospheric waveguide interference can be effectively judged by carrying out periodic performance quantity detection on two ends of a carrier; meanwhile, a corresponding interference information reporting and solution scheme configuration issuing process is provided based on a network management structure, and the method can be effectively applied to the existing network of an operator; the interference avoidance configuration information based on the symbol-level subframe backspacing scheme is set, time-frequency resource overhead and scheme complexity are considered, the existing protocol process is slightly modified, and equipment implementation of equipment manufacturers and networking deployment of operators are facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without inventive exercise.
FIG. 1 is a schematic diagram of the interference generation of an atmospheric waveguide in the prior art;
FIG. 2 is a schematic flow diagram of one embodiment of an atmospheric waveguide interference handling method according to the present disclosure;
FIG. 3 is a schematic diagram of the adjacent channel atmospheric waveguide interference detection in an embodiment of the atmospheric waveguide interference processing method according to the present disclosure;
fig. 4 is a schematic diagram of a network structure for reporting an interference detection result and issuing an interference avoidance configuration in an embodiment of an atmospheric waveguide interference processing method according to the present disclosure;
fig. 5 is a schematic diagram of a special slot symbol configuration in interference avoidance configuration information in an embodiment of an atmospheric waveguide interference processing method according to the present disclosure;
fig. 6 is a schematic diagram illustrating interference detection and reporting according to another embodiment of the atmospheric waveguide interference processing method of the present disclosure;
FIG. 7 is a block schematic diagram of one embodiment of an atmospheric waveguide interference processing apparatus according to the present disclosure;
fig. 8 is a block schematic diagram of another embodiment of an atmospheric waveguide interference processing apparatus according to the present disclosure.
Detailed Description
The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The terms "first", "second", and the like are used hereinafter only for descriptive distinction and not for other specific meanings.
Fig. 2 is a flowchart illustrating a method of an embodiment of an atmospheric waveguide interference processing method according to the present disclosure, as shown in fig. 2:
in step 201, first detection information corresponding to a first edge PRB (physical resource block) located at the edge of the first carrier and second detection information corresponding to a center PRB located at the center of the first carrier are obtained. The first carrier may be a base station operating carrier, the first carrier may be a Time Division Duplex (TDD) carrier, and the first edge PRB may be PRBs of edges of upper and lower ends of the first carrier.
For example, the 5G new frequency band is mainly a TDD frequency band, taking the 5G first-transmission frequency band n78 in our country as an example, the domestic outdoor available frequency range planned for n78 is 3.4-3.6GHz, the total bandwidth is 200MHz, and the frequency can be divided into a plurality of 5G carriers. In order to avoid the self-interference of receiving and transmitting between adjacent base stations and avoid setting a guard band, a plurality of adjacent frequency TDD carriers of the same operator are likely to adopt the same uplink and downlink time slot ratio. In this case, the adjacent-channel atmospheric waveguide interference problem is likely to occur.
And 204, if so, obtaining the interference detection information and sending the interference detection information to the network management system, and performing interference avoidance processing based on the interference avoidance configuration information sent by the network management system. And the interfered base station reports interference detection information to the network management system, wherein the interference detection information comprises information such as the position of an interfered resource block, the number of interfered uplink symbols and the like. And the network management system performs interference avoidance configuration on the interfered base station and the interference applying base station.
In one embodiment, the first decision rule may be a plurality of decision rules. For example, a first wireless measurement index and a second wireless measurement index in the first detection information and the second detection information are respectively obtained, and the first wireless measurement index and the second wireless measurement index include: RSSI (Received Signal Strength), uplink SINR (Signal to Interference plus Noise Ratio), and the like. Judging whether the first wireless measurement index is deteriorated relative to the second wireless measurement index, wherein the deterioration of the measurement index comprises the following steps: and the RSSI is increased, the uplink SINR is decreased, and the like, and if so, the adjacent channel interference detection is determined to be needed.
The first edge PRB and the special time slot on the center PRB and all uplink symbols in the first uplink subframe after the special time slot may be detected separately, and the first detection information and the second detection information may be obtained by using a plurality of existing detection methods. And judging whether periodic indexes are deteriorated or not from the initial symbol of uplink receiving in the process of converting the downlink into the uplink, wherein the periodic indexes comprise RSSI (received signal strength indicator) rising, uplink SINR (signal to interference ratio) falling and the like.
The second decision rule may be a plurality of decision rules. For example, energy intensity information corresponding to the second edge PRB is obtained, whether the energy intensity information exceeds a preset energy intensity threshold is judged, and if yes, it is determined that the first carrier is interfered by the adjacent-channel atmospheric waveguide. The energy detection may adopt various existing methods, for example, energy detection is performed on all uplink symbols in the special slot in the second edge PRB and the first uplink subframe after the special slot, so as to obtain energy intensity information.
If the first edge PRB has periodic deterioration of an uplink receiving index relative to the central PRB, the first carrier can be preliminarily judged to be possibly interfered by the adjacent-channel atmospheric waveguide. The second carrier is a base station working carrier adjacent to the first carrier in the frequency domain, and may belong to the same operator and be a working carrier of other base stations. And aiming at two second edge PRBs outside the edges of the upper end and the lower end of the second carrier, performing energy detection on each uplink symbol in the special time slot and the subsequent first uplink subframe, and if the energy detection is higher than a preset threshold value, judging that the symbol corresponding to the measurement index deterioration in the first edge PRB is interfered by the adjacent-frequency atmospheric waveguide.
In one embodiment, according to the configuration of the special time slot, detecting all uplink symbols in the special time slot and the first uplink subframe in each radio frame, comparing the wireless measurement indexes of a first edge PRB at the edge of a first carrier with the wireless measurement index of a center PRB at the center of the first carrier, and if the wireless measurement index of the first edge PRB is periodically deteriorated compared with the index of the center PRB, preliminarily considering that the first carrier is possibly interfered by the adjacent-channel atmospheric waveguide; then, for the PRBs outside both ends of the first carrier, that is, the second edge PRB of the second carrier edge adjacent to the first carrier in the frequency domain, energy detection is performed on all uplink symbols in the special slot and the first uplink subframe in each radio frame, and if the energy is higher than a certain threshold, it is determined that adjacent channel interference is received, as shown in fig. 3.
And determining the frequency domain position of the adjacent frequency interference, whether the frequency domain position is at the upper end or the lower end of the carrier, and reporting the interfered symbol number and the interference signal strength to the wireless network management OMC. Sending interference detection information to a wireless network management system to which the interference detection information belongs, wherein the interference detection information comprises: the information of the interfered uplink symbols in the first edge PRB, the resource information and the energy intensity information of the first edge PRB, and the like. The interfered uplink symbol information in the first edge PRB comprises: the number of interfered uplink symbols; the energy intensity information is energy detection information for all uplink symbols in the special slot in the second edge PRB and the first uplink subframe after the special slot.
And receiving interference avoidance configuration information set by the comprehensive network management or the wireless network management, and adjusting the symbol configuration of the wireless frame based on the interference avoidance configuration information. The interference avoidance configuration information includes: symbol configuration information of a special slot, etc.; the symbol configuration information of the special time slot includes: an increased number of GP symbols in a particular slot, a decreased number of downlink symbols in a particular slot, etc. Based on the increased number of GP symbols and the decreased number of downlink symbols, the GP symbols are extended and the downlink symbols are decreased in the special time slot in the first edge PRB, and both the increased number of GP symbols and the decreased number of downlink symbols are the number of uplink symbols interfered in the first edge PRB, as shown in fig. 5.
In one embodiment, a network management system positions an interfering base station based on reciprocity of an atmospheric waveguide according to interference detection information reported by an interfered base station, and sets interference avoidance configuration information by adopting an active interference avoidance scheme. The network management system comprises a wireless network manager, an integrated network manager and the like. And the wireless network manager positions the interference applying base station in the jurisdiction range according to the interference detection information, and if the interference applying base station can be positioned, the wireless network manager sets interference avoiding configuration information according to the number of interfered uplink symbols in the first edge PRB and transmits the interference avoiding configuration information to the interfered base station and the interference applying base station.
And if the disturbing base station cannot be positioned, the wireless network management system sends interference detection information to the comprehensive network management system, the comprehensive network management system positions the disturbing base station in the whole network range, sets interference avoidance configuration information according to the number of interfered uplink symbols in the first edge PRB, and sends the interference avoidance configuration information to the disturbed base station and the disturbing base station.
For example, as shown in fig. 4, the wireless network manager receives the interference detection information reported by the interfered base station and the interference detection information sent by other interfered base stations within the jurisdiction range, locates the interfering base station according to the number of interfered symbols, the interference signal strength and other messages, if the interfering base station can be located, sets interference avoidance configuration information by using an active interference avoidance scheme according to the reciprocity of the atmospheric waveguide, determines a subframe backoff scheme at the interfering and interfered base station sides according to the number of interfered symbols of the interfered base station, and issues the interference avoidance configuration information to the interfered base station and the interfering base station.
If the disturbing base station can not be positioned, the wireless network manager reports the interference detection information of the disturbed base station to the comprehensive network manager, and the comprehensive network manager positions the disturbing base station in the whole network range. Interference avoidance configuration information can be set according to reciprocity of the atmospheric waveguide, subframe backspacing schemes of the interfered base station side and the interfered base station side are determined according to the number of interfered symbols of the interfered base station, and the interference avoidance configuration information is respectively issued to the interfered base station and the interfered base station through a wireless network management system.
And the interference base station receives the interference avoiding configuration information, correspondingly changes the symbol configuration of the special time slot, compresses the number of downlink symbols and expands the number of GP symbols. And the interfered base station receives the interference avoiding configuration information and correspondingly changes the symbol configuration of the special time slot.
In an embodiment, as shown in fig. 6, an interfering base station gNB-a in a TDD system of an operator operates on a TDD carrier F1, an interfered base station gNB operates on a TDD carrier F2 adjacent to an upper end of F1, the gNB-a and the gNB-B are respectively located under radio network managers OMC1 and OMC2, and special slot symbol configurations DL: GP: UL of default carriers F1 and F2 are 10:2: 2.
gNB-B detected: on resource block PRB (0) at the lower end of carrier F1, the uplink SINR for a total of 8 uplink symbols in the special slot and subsequent uplink subframes is significantly lower than the uplink SINR of the carrier center resource block for consecutive periods. It is preliminarily determined that the carrier F1 may be interfered by the air waveguide of the lower adjacent frequency carrier F2.
The energy detection is carried out on a resource block PRB (-1) below the PRB (0), and the detection result is that E1 is higher than a threshold EthrThen, it is determined that F1 is interfered by the adjacent-frequency atmospheric waveguide of F2. And the gNB-B reports the interfered resource block number (PRB (0)), the interfered uplink symbol number (8) and the interference strength E1 to the wireless network management OMC 2.
And the wireless network management OMC2 receives the interference information reported by the gNB-B, and forwards the interference information of the gNB-B to the comprehensive network management NMC according to the fact that the interference information does not find the interference-applying base station in the jurisdiction range. And the comprehensive network management NMC receives the interference information of the gNB-B, searches in the whole network range, and finally positions the interference base station as gNB-A under OMC 1.
Since the number of interfered uplink symbols of the gNB-B is 8, the GP in the special time slot is extended forward by 8 symbols, the corresponding downlink symbols are compressed, and the symbol configuration of the special time slot is updated to 2:10:2, as shown in fig. 5. And the NMC sends the interference avoidance configuration information containing the updated special time slot symbol configuration information to the gNB-A and the gNB-B through the OMC1 and the OMC2 respectively. And the gNB-A and the gNB-B receive the interference avoidance configuration information, correspondingly adjust the interference avoidance configuration information and avoid the interference of the adjacent-frequency atmospheric waveguide.
In one embodiment, as shown in fig. 7, the present invention provides an atmospheric waveguide interference processing apparatus 70, comprising: the interference avoidance system comprises a wireless signal detection module 71, a detection information judgment module 72, an adjacent frequency energy detection module 73, a guided wave interference judgment model 74, an interference information reporting module 75 and an interference avoidance processing module 76.
The wireless signal detection module 71 obtains first detection information corresponding to a first edge PRB located at the edge of the first carrier and second detection information corresponding to a center PRB located at the center of the first carrier; the first carrier is a base station working carrier. The detection information decision module 72 determines whether the adjacent channel interference detection is required based on a preset first decision rule and according to a comparison result of the first detection information and the second detection information, and if so, the adjacent channel energy detection module 73 performs energy detection on a second edge PRB which is located at the edge of the second carrier and is adjacent to the first edge PRB; and the second carrier is a base station working carrier adjacent to the first carrier on the frequency domain.
The guided wave interference judgment model 74 judges whether the first carrier is interfered by the adjacent-channel atmospheric waveguide based on a preset second judgment rule and according to the energy detection result, and if so, the interference information reporting module 75 obtains interference detection information and sends the interference detection information to the network management system. The interference avoidance processing module 76 performs interference avoidance processing based on the interference avoidance configuration information issued by the network management system.
In one embodiment, the detection information determining module 72 obtains a first wireless measurement indicator and a second wireless measurement indicator in the first detection information and the second detection information, respectively, where the first wireless measurement indicator and the second wireless measurement indicator include: RSSI, uplink SINR, etc. The detection information decision module 72 determines whether the first wireless measurement index is deteriorated relative to the second wireless measurement index, and if so, determines that the adjacent channel interference detection is required; wherein the deterioration of the measurement indicator comprises: RSSI increase, uplink SINR decrease, etc.
The wireless signal detection module 71 detects all uplink symbols in the special time slot on the first edge PRB and the central PRB and in the first uplink subframe after the special time slot, respectively, to obtain first detection information and second detection information. The guided wave interference judgment model 74 obtains energy intensity information corresponding to the second edge PRB, judges whether the energy intensity information exceeds a preset energy intensity threshold, and if so, determines that the first carrier is interfered by the adjacent-channel atmospheric waveguide. For example, the adjacent channel energy detection module 73 performs energy detection on the special slot in the second edge PRB and all uplink symbols in the first uplink subframe after the special slot, to obtain energy intensity information.
The interference detection information includes: the information of the interfered uplink symbols in the first edge PRB, the resource information and the energy intensity information of the first edge PRB, and the like. The interference information reporting module 75 sends the interference detection information to the wireless network management system to which it belongs.
The interference avoidance processing module 76 adjusts the symbol configuration of the radio frame based on the interference avoidance configuration information, where the interference avoidance configuration information is set by the integrated network manager or the wireless network manager. The interference avoidance configuration information includes: symbol configuration information of the special time slot, and the like, wherein the symbol configuration information of the special time slot includes: an increased number of GP symbols in a particular slot, a decreased number of downlink symbols in a particular slot, etc.
The interference avoidance processing module 76 expands GP symbols and reduces downlink symbols in the special time slot in the first edge PRB based on the increased number of GP symbols and the reduced number of downlink symbols, where the increased number of GP symbols and the reduced number of downlink symbols are both the number of interfered uplink symbols in the first edge PRB.
Fig. 8 is a block schematic diagram of yet another embodiment of an atmospheric waveguide interference processing apparatus according to the present disclosure. As shown in fig. 8, the apparatus may include a memory 81, a processor 82, a communication interface 83, and a bus 84. The memory 81 is used for storing instructions, the processor 82 is coupled to the memory 81, and the processor 82 is configured to execute the atmospheric waveguide interference processing method implemented above based on the instructions stored in the memory 81.
The memory 81 may be a high-speed RAM memory, a non-volatile memory (non-volatile memory), or the like, and the memory 81 may be a memory array. The storage 81 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules. The processor 82 may be a central processing unit CPU, or an application specific integrated circuit asic, or one or more integrated circuits configured to implement the atmospheric waveguide disturbance processing methods of the present disclosure.
In one embodiment, the present disclosure provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the atmospheric waveguide interference processing method as in any of the above embodiments.
In one embodiment, the present disclosure provides a base station comprising: the atmospheric waveguide interference processing apparatus as in any one of the above embodiments.
In one embodiment, the present disclosure provides a communication system comprising: a base station, a wireless network management system and an integrated network management system as in any of the above embodiments.
And the wireless network manager positions the interference applying base station in the jurisdiction range according to the interference detection information uploaded by the interfered base station, and if the interference applying base station can be positioned, the wireless network manager sets interference avoiding configuration information and sends the interference avoiding configuration information to the interfered base station and the interference applying base station.
And if the wireless network management system can not position the interference base station, sending the interference detection information to the comprehensive network management system, positioning the interference base station in the whole network range by the comprehensive network management system, setting interference avoidance configuration information, and issuing the interference avoidance configuration information to the interfered base station and the interference base station.
The atmospheric waveguide interference processing method, the device, the base station, the communication system and the storage medium in the embodiments can solve the problem that the uplink reception at the base station side is greatly influenced by the adjacent-frequency atmospheric waveguide interference, and the adjacent-frequency atmospheric waveguide interference can be effectively judged by detecting the periodic performance quantity at two ends of the carrier; meanwhile, a corresponding interference information reporting and solution scheme configuration issuing process is provided based on a network management structure, and the method can be effectively applied to the existing network of an operator; the interference avoidance configuration information based on the symbol-level subframe backspacing scheme is set, time-frequency resource overhead and scheme complexity are considered, the existing protocol process is slightly modified, and equipment implementation of equipment manufacturers and networking deployment of operators are facilitated.
The method and system of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (25)
1. An atmospheric waveguide interference processing method, comprising:
obtaining first detection information corresponding to a first edge PRB positioned at the edge of a first carrier and second detection information corresponding to a center PRB positioned at the center of the first carrier; the first carrier is a base station working carrier;
judging whether the adjacent channel interference detection is needed or not based on a preset first judgment rule and according to a comparison result of the first detection information and the second detection information;
if so, performing energy detection on a second edge PRB which is located at the edge of a second carrier and is close to the first edge PRB, and judging whether the first carrier is interfered by the adjacent-frequency atmospheric waveguide or not based on a preset second judgment rule and according to the energy detection result;
the second carrier is a base station working carrier adjacent to the first carrier on a frequency domain;
and if so, obtaining interference detection information and sending the interference detection information to a network management system, and carrying out interference avoidance processing based on interference avoidance configuration information sent by the network management system.
2. The method of claim 1, wherein the determining whether the detection of the adjacent channel interference is required based on a preset first decision rule and according to a comparison result between the first detection information and the second detection information comprises:
respectively obtaining a first wireless measurement index and a second wireless measurement index in the first detection information and the second detection information, wherein the first wireless measurement index and the second wireless measurement index include: RSSI and uplink SINR;
judging whether the first wireless measurement index is deteriorated relative to the second wireless measurement index, and if so, determining that adjacent channel interference detection is required;
wherein the measurement indicator deterioration comprises: the RSSI rises and the uplink SINR falls.
3. The method of claim 2, wherein,
and respectively detecting all uplink symbols in the special time slot on the first edge PRB and the central PRB and in a first uplink subframe behind the special time slot to obtain the first detection information and the second detection information.
4. The method of claim 2, wherein the determining whether the first carrier is interfered by the adjacent-channel atmospheric waveguide based on the preset second determination rule and according to the energy detection result comprises:
obtaining energy intensity information corresponding to the second edge PRB;
and judging whether the energy intensity information exceeds a preset energy intensity threshold value, and if so, determining that the first carrier is interfered by the adjacent-channel atmospheric waveguide.
5. The method of claim 4, the obtaining energy strength information corresponding to the second-edge PRB comprising:
and performing energy detection on the special time slot in the second edge PRB and all uplink symbols in the first uplink subframe after the special time slot to obtain the energy intensity information.
6. The method of claim 4, the interference detection information comprising: the interfered uplink symbol information, the resource information of the first edge PRB and the energy intensity information in the first edge PRB;
and sending the interference detection information to the wireless network management system.
7. The method of claim 6, wherein the performing interference avoidance processing based on the interference avoidance configuration information issued by the network management system comprises:
adjusting symbol configuration of a wireless frame based on the interference avoidance configuration information; wherein, the interference avoidance configuration information is set by the integrated network management or the wireless network management.
8. The method of claim 7, wherein,
the interference avoidance configuration information includes: symbol configuration information of the special time slot;
wherein the symbol configuration information of the special time slot includes: an increased number of GP symbols in the special time slot, a decreased number of downlink symbols in the special time slot.
9. The method of claim 8, the adjusting a symbol configuration of a radio frame based on the interference avoidance configuration information comprising:
expanding GP symbols and reducing downlink symbols in a special time slot in the first edge PRB based on the increased number of GP symbols and the reduced number of downlink symbols;
wherein the increased number of GP symbols and the decreased number of downlink symbols are both the number of interfered uplink symbols in the first edge PRB.
10. The method of claim 7, further comprising:
the wireless network manager positions an interference applying base station in the jurisdiction range according to the interference detection information, and if the interference applying base station can be positioned, the wireless network manager sets interference avoiding configuration information according to the number of interfered uplink symbols in the first edge PRB and sends the interference avoiding configuration information to the interfered base station and the interference applying base station;
and if the interference base station cannot be positioned, the wireless network management system sends the interference detection information to a comprehensive network management system, the comprehensive network management system positions the interference base station in the whole network range, sets the interference avoidance configuration information according to the number of interfered uplink symbols in the first edge PRB, and sends the interference avoidance configuration information to the interfered base station and the interference base station.
11. An atmospheric waveguide interference processing apparatus comprising:
the wireless signal detection module is used for obtaining first detection information corresponding to a first edge PRB positioned at the edge of a first carrier and second detection information corresponding to a center PRB positioned at the center of the first carrier; the first carrier is a base station working carrier;
the detection information judgment module is used for judging whether the adjacent channel interference detection is required or not based on a preset first judgment rule and according to a comparison result of the first detection information and the second detection information;
the adjacent frequency energy detection module is used for detecting the energy of a second edge PRB which is positioned at the edge of a second carrier and is adjacent to the first edge PRB if the first edge PRB is adjacent to the second carrier; the second carrier is a base station working carrier adjacent to the first carrier on a frequency domain;
the guided wave interference judgment model is used for judging whether the first carrier wave is interfered by the adjacent-frequency atmospheric waveguide based on a preset second judgment rule and according to the energy detection result;
the interference information reporting module is used for obtaining the interference detection information and sending the interference detection information to the network management system if the interference detection information is positive;
and the interference avoidance processing module is used for carrying out interference avoidance processing based on the interference avoidance configuration information issued by the network management system.
12. The apparatus of claim 11, wherein,
the detection information determining module is configured to obtain a first wireless measurement indicator and a second wireless measurement indicator in the first detection information and the second detection information, respectively, where the first wireless measurement indicator and the second wireless measurement indicator include: RSSI and uplink SINR; judging whether the first wireless measurement index is deteriorated relative to the second wireless measurement index, and if so, determining that adjacent channel interference detection is required; wherein the measurement indicator deterioration comprises: the RSSI rises and the uplink SINR falls.
13. The apparatus of claim 12, wherein,
the wireless signal detection module is configured to detect all uplink symbols in the special time slot on the first edge PRB and the center PRB and in the first uplink subframe after the special time slot, respectively, to obtain the first detection information and the second detection information.
14. The apparatus of claim 12, wherein,
the guided wave interference judgment model is used for obtaining energy intensity information corresponding to the second edge PRB; and judging whether the energy intensity information exceeds a preset energy intensity threshold value, and if so, determining that the first carrier is interfered by the adjacent-channel atmospheric waveguide.
15. The apparatus of claim 14, wherein,
and the adjacent frequency energy detection module is configured to perform energy detection on the special time slot in the second edge PRB and all uplink symbols in the first uplink subframe located after the special time slot, so as to obtain the energy intensity information.
16. The apparatus of claim 14, the interference detection information comprising: the interfered uplink symbol information, the resource information of the first edge PRB and the energy intensity information in the first edge PRB;
and the interference information reporting module is used for sending the interference detection information to the wireless network management system to which the interference detection information belongs.
17. The apparatus of claim 16, wherein,
the interference avoidance processing module is used for adjusting the symbol configuration of a wireless frame based on the interference avoidance configuration information; wherein, the interference avoidance configuration information is set by the integrated network management or the wireless network management.
18. The apparatus of claim 17, wherein,
the interference avoidance configuration information includes: symbol configuration information of the special time slot;
wherein the symbol configuration information of the special time slot includes: an increased number of GP symbols in the special time slot, a decreased number of downlink symbols in the special time slot.
19. The apparatus of claim 18, wherein,
the interference avoidance processing module is configured to expand the GP symbols and reduce the downlink symbols in the special timeslot in the first edge PRB based on the increased number of the GP symbols and the decreased number of the downlink symbols; wherein the increased number of GP symbols and the decreased number of downlink symbols are both the number of interfered uplink symbols in the first edge PRB.
20. An atmospheric waveguide interference processing apparatus comprising:
a memory; and a processor coupled to the memory, the processor configured to perform the method of any of claims 1-10 based on instructions stored in the memory.
21. A base station, comprising:
an atmospheric waveguide interference processing apparatus as claimed in any of claims 11 to 19.
22. A computer readable storage medium having stored thereon computer program instructions which, when executed by one or more processors, implement the steps of the method of any one of claims 1 to 10.
23. A communication system, comprising:
the base station, wireless network management, and integrated network management system of claim 21.
24. The system of claim 23, wherein,
and the wireless network manager positions the interference applying base station in the jurisdiction range according to the interference detection information uploaded by the interfered base station, and if the interference applying base station can be positioned, the wireless network manager sets interference avoiding configuration information and sends the interference avoiding configuration information to the interfered base station and the interference applying base station.
25. The system of claim 24, wherein,
and if the wireless network management system can not position the interference base station, sending interference detection information to the comprehensive network management system, positioning the interference base station in the whole network range by the comprehensive network management system, setting interference avoidance configuration information, and issuing the interference avoidance configuration information to the interfered base station and the interference base station.
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