CN109982331B - Spectrum interference back-off selection method and system - Google Patents
Spectrum interference back-off selection method and system Download PDFInfo
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- CN109982331B CN109982331B CN201910254912.4A CN201910254912A CN109982331B CN 109982331 B CN109982331 B CN 109982331B CN 201910254912 A CN201910254912 A CN 201910254912A CN 109982331 B CN109982331 B CN 109982331B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/06—Reselecting a communication resource in the serving access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Abstract
The invention belongs to the technical field of communication, and discloses a frequency spectrum interference concession selection method and a system, wherein when an interference signal is detected and a frequency spectrum priority mark is lower than the frequency spectrum priority mark, signal transmission is carried out at the position of a frequency point; when the interference signal is detected and the frequency spectrum priority mark is higher than the self frequency spectrum priority mark, a clean frequency point is searched through scanning, and a signal is sent to inform equipment communicating with the clean frequency point to change the frequency point; when a plurality of networks are detected to be communicated, part of resources are switched to a new frequency point to work; when a plurality of networks working independently exist in the same frequency band, under the condition of ensuring flag bit intercommunication, frequency point switching is carried out according to priority flag bit statistics, and signal network separation is realized. The invention well solves the problems of rapid frequency spectrum switching, access collision, frequency spectrum interference, frequency spectrum resource shortage, network expansion separation and fusion, can maximize and effectively utilize the frequency spectrum, and is beneficial to flexible network conversion.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a spectrum interference back-off selection method and a spectrum interference back-off selection system.
Background
Currently, the current state of the art commonly used in the industry is such that:
in a communication system, different frequency points are used in each system or among the systems, and the frequency points used by other systems cannot be known in real time, so that the system is often interfered by other equipment or other systems in the system in the use process.
The existing scheme is as follows:
the currently adopted method comprises the following steps: 1) Sending and receiving signals by adopting a fixed frequency point; 2) When the device does not have the automatic frequency scanning function, the external environment is swept by using the testing device before use, and then a clean frequency point is selected for use; 3) When the equipment has an automatic scanning function, when the equipment cannot work normally, the clean frequency point is selected to send and receive the signal through scanning.
In summary, the problems of the prior art are as follows:
when a plurality of users access, the spectrum interference deferral selection method of the existing scheme selects the available frequency band with the maximum successful access rate at ordinary times as a candidate frequency band by learning the past frequency band access experience, and randomly switches to the candidate frequency band when interference occurs. In the existing scheme, collision can occur in the switching process, so that the candidate frequency band can not be switched and the normal work can not be carried out, and meanwhile, if frequency spectrum interference occurs, whether frequency spectrum deferral is needed to be effectively identified or not can not be effectively identified, so that the frequency spectrum selection can not be effectively carried out, the rapid switching can not be effectively carried out, the success rate and the frequency spectrum use efficiency of effective communication are reduced, and meanwhile, due to the fact that multi-frequency fusion and switching and connection among multi-frequency signals are not available, the separation and fusion of network expansion can not be effectively realized.
In the prior art, a back-off mechanism for confirming a frequency spectrum by transmitting information such as local interference and interfered conditions, setting priority of equipment on the use of the frequency spectrum, detecting interference of the local equipment on other equipment, interference of other equipment on the local equipment, communication requirements and the like through the whole network is not provided. The problems of spectrum interference and spectrum resource shortage cannot be effectively solved in the whole network, network separation, expansion and fusion cannot be effectively realized, and the spectrum cannot be utilized to the maximum and most effectively.
The difficulty of solving the technical problems is as follows:
in order to solve the above problems, it is necessary to effectively identify whether there is interference during the spectrum usage process; when interference exists, whether the interference actively disappears in a short time or not must be effectively identified; it is necessary to be able to confirm whether the spectrum has reached maximum utilization from the perspective of the entire system; the problem that network fission can be realized in real time to realize network expansion when a single frequency spectrum cannot effectively meet the transmission requirement at present needs to be solved; when a plurality of networks need to be interconnected, the problem that the interconnection and intercommunication of the plurality of networks can be realized by immediately realizing network fusion is needed to be solved.
The significance of solving the technical problems is as follows:
the problem is solved, the resource waste during the repeated back-off access of the frequency spectrum can be reduced to the maximum extent, the effective utilization of the frequency spectrum resource is achieved, the type of the frequency spectrum interference can be accurately identified, the network fission can be realized immediately, and the network capacity is enlarged; the merging and fusion of a plurality of different spectrum transmission networks can be realized.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a spectrum interference deferral selection method and a spectrum interference deferral selection system. In order to effectively solve the problem, the invention provides a spectrum interference deferral selection method, which enables equipment to automatically plan the condition of using frequency points of the equipment through the detection of the interference condition of the local equipment to other equipment and the acquisition and communication requirements of the interference condition of the local equipment to other equipment, thereby effectively solving the interference problem among the equipment in the actual use process. The invention is also used for symbiotic transmission and self signal elimination.
The invention is realized in such a way, and provides a spectrum interference concession selection method, which comprises the following steps:
step one, each network transmission device sends a frequency spectrum priority flag bit, an interference flag bit communication demand flag bit and a multi-level alternative frequency point priority flag bit in a long period;
step two, detecting whether the local signal of the peripheral network transmission equipment is interfered by the signal of the peripheral network transmission equipment or the signal of the peripheral network transmission equipment is interfered by the local signal of the peripheral network transmission equipment by suspending the sending of the local signal of the network transmission equipment and the elimination processing of the self transmission signal; meanwhile, forwarding information of other related network transmission equipment to acquire the information of the whole network;
step three, when the network transmission equipment is interfered and a frequency point is confirmed to be used by a local machine of the network transmission equipment, the local machine periodically sends a local frequency spectrum priority flag bit and an interference flag bit until the interference is eliminated or the network transmission equipment with higher priority is detected to occupy the frequency point;
step four, when the local network transmission equipment interferes with other peripheral network transmission equipment and confirms that the frequency point belongs to other network transmission equipment for use, the local network transmission equipment confirms the usable frequency point by detecting the conditions of other frequency points and simultaneously informs the corresponding network transmission equipment of synchronously changing the used frequency point;
step five, when the network transmission equipment is communicated with a plurality of networks, the rest resources are switched to a new frequency point for working under the condition of keeping partial resources occupied by the original frequency point;
and step six, when the network transmission equipment detects that a plurality of independently working networks exist in the same frequency band, time distribution and frequency point switching are carried out according to the network resource occupation condition and the frequency point use priority flag bit statistics, so that network separation is realized.
Further, in the second step, each network transmission device sets a frequency spectrum priority flag and an interference flag bit in the transmission process; when the network transmission equipment detects that the interference signal exists and the frequency spectrum priority mark is lower than the network transmission equipment, the network transmission equipment continues to transmit signals at the frequency point position; meanwhile, in the transmission process, each network transmission device forwards the information of other related similar devices to realize the whole-network information acquisition.
Further, in the third step, the local network transmission equipment acquires a plurality of standby frequency points in real time through detecting clean frequency points and negotiating with the whole network, marks the frequency points by using the priority, and when interference and resource shortage occur, any network transmission equipment in the network is synchronously or asynchronously and quickly switched to the corresponding clean frequency points according to the priority, so that network signals are not interrupted and seamless switching is performed.
Further, in the fourth step, when the local network transmission equipment detects that there is an interference signal and the frequency spectrum priority flag is higher than the local network transmission equipment, the local network transmission equipment searches for a clean frequency point by scanning, and simultaneously sends a signal to inform the network transmission equipment communicating with the local network transmission equipment of changing the frequency point, and after the change is confirmed, the network transmission equipment starts to work at a new frequency point.
Further, in the sixth step, when a plurality of network transmission devices in different frequency bands are connected, frequency point switching is performed according to the quality of a single frequency point and the redundancy of resources, so that network fusion is realized.
Another objective of the present invention is to provide a spectral interference cancellation selection method program, which implements the spectral interference cancellation selection method.
Another object of the present invention is to provide a terminal, which carries a processor implementing the spectrum interference deferral selection method.
It is another object of the present invention to provide a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the spectral interference deferral selection method.
Another objective of the present invention is to provide a spectrum interference deferral control system for implementing the spectrum interference deferral selection method.
Another object of the present invention is to provide a spectrum interference deferral device for implementing the spectrum interference deferral selection method.
In summary, the advantages and positive effects of the invention are:
the type of the spectrum interference can be accurately identified; resource waste during access of frequency spectrum repeated back-off can be reduced to the maximum extent; the effective utilization of frequency spectrum resources is achieved; network fission can be realized immediately, and the network capacity is enlarged; the merging and fusion of a plurality of different spectrum transmission networks can be realized; the method can realize interconnection and intercommunication of a plurality of transmission networks with different frequencies.
The present invention proposes a back-off mechanism to confirm the spectrum by transmitting the local interference and interfered conditions. The invention confirms the spectrum use deferral mechanism by setting the priority of the device to the spectrum use. The invention confirms the spectrum use condition by detecting the interference of the local machine to other devices and the interference of other devices to the local machine.
The invention well solves the problem of frequency spectrum interference; the invention solves the problem of insufficient frequency spectrum resources well through a frequency spectrum use yielding mechanism, and can maximize and most effectively utilize the frequency spectrum.
The mechanism is not only suitable for the traditional point-to-multipoint system, but also has practical application value for the multipoint-to-multipoint system, the cooperative communication system, the ad hoc network and other systems, and in the process of rescue and field communication, the most important is to ensure the effectiveness of communication.
Drawings
Fig. 1 is a flowchart of a spectrum interference deferral selection method according to an embodiment of the present invention.
Fig. 2 is a diagram illustrating that all devices can work at the same frequency point when three networks provided by the embodiment of the present invention work at different positions.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the prior art, a deferral mechanism for confirming a frequency spectrum by transmitting local interference and interfered conditions, setting priority of the frequency spectrum use by equipment, detecting interference of the local equipment to other equipment and interference of other equipment to the local equipment does not exist;
the problems of spectrum interference and spectrum resource shortage cannot be effectively solved, and the spectrum cannot be utilized to the maximum and most effectively.
In order to solve the above technical problems, the present invention will be described in detail with reference to specific embodiments.
As shown in fig. 1, the spectrum interference deferral selection method provided by the embodiment of the present invention includes:
s101, each network transmission device sends a frequency spectrum priority flag bit, an interference flag bit communication demand flag bit and a multi-level alternative frequency point priority flag bit in a long period.
S102, detecting whether the local signal of the peripheral network transmission equipment is interfered by the signal of the peripheral network transmission equipment or the signal of the peripheral network transmission equipment is interfered by the local signal or the local signal by suspending the sending of the local signal of the network transmission equipment and the elimination processing of the self transmission signal; and simultaneously, forwarding information of other related network transmission equipment to acquire the information of the whole network.
S103, when the network transmission equipment is interfered and the frequency point is confirmed to be used by a local machine of the network transmission equipment, the local machine periodically sends a local frequency spectrum priority flag bit and an interference flag bit until the interference is eliminated or the network transmission equipment with higher priority is detected to occupy the frequency point.
And S104, when the local network transmission equipment interferes with other peripheral network transmission equipment and confirms that the frequency point belongs to other network transmission equipment for use, the local network transmission equipment confirms the usable frequency point by detecting the conditions of other frequency points and simultaneously informs the corresponding network transmission equipment of synchronously changing the used frequency point.
And S105, when the network transmission equipment is communicated with a plurality of networks, under the condition that partial resources occupied by the original frequency point are kept to work, switching the residual resources to a new frequency point to work.
S106, when the network transmission equipment detects that a plurality of independently working networks exist in the same frequency band, time allocation and frequency point switching are carried out according to the network resource occupation condition and frequency point use priority flag bit statistics, and network separation is achieved.
In step S102, each network transmission device sets a spectrum priority flag and an interference flag bit during transmission; when the network transmission equipment detects that the interference signal exists and the frequency spectrum priority mark is lower than the network transmission equipment, the network transmission equipment continues to transmit signals at the frequency point position; meanwhile, in the transmission process, each network transmission device forwards the information of other related similar devices to realize the whole-network information acquisition.
In step S103, the local network transmission equipment acquires a plurality of used standby frequency points in real time through detecting clean frequency points and negotiation in the whole network, labels the frequency points through using priorities, and when interference and resource shortage occur, any network transmission equipment in the network is synchronously or asynchronously and quickly switched to the corresponding clean frequency point according to the priorities, so that network signals are not interrupted and seamless switching is performed.
In step S104, when the local network transmission device detects that there is an interference signal and the spectrum priority flag is higher than itself, the device searches for a clean frequency point by scanning, and sends a signal to notify the network transmission device communicating with the device to change the frequency point, and after the change is confirmed, the network transmission device starts to work at a new frequency point.
In step S106, when there are a plurality of network transmission devices of different frequency bands connected, frequency point switching is performed according to the quality of a single frequency point and the redundancy of resources, so as to implement network convergence.
The embodiment of the invention provides a spectrum interference concession control system for implementing a spectrum interference concession selection method.
The invention is further described with reference to specific examples.
As shown in fig. 2, when three networks work at different positions, all devices can work at the same frequency point, because the devices are located at more and more approximate positions in the process of continuously moving, if the frequency spectrum resources on the existing frequency points are enough, each device continues to work at the original frequency point, if the frequency spectrum resources are not enough, mutual interference occurs among the devices, and because each device is in a real-time detection state, the device with priority 1 can know in advance that the external interference will disappear automatically, so the device with priority 1 can keep working at the original frequency point, the devices with priority 2 and priority 3 can switch to other frequency points to work in real time, and if interconnection and intercommunication among the devices with priority 1,2 and 3 are detected, the devices with priority 2 and priority 3 can stay a part of signals to be transmitted on the original. Therefore, the purposes of avoiding spectrum interference, network expansion, network interconnection and intercommunication, network fusion and the like are achieved.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When used in whole or in part, can be implemented in a computer program product that includes one or more computer instructions. When loaded or executed on a computer, cause the flow or functions according to embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL), or wireless (e.g., infrared, wireless, microwave, etc.)). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (9)
1. A method for spectrum interference deferral selection, the method comprising:
step one, sending a frequency spectrum priority flag bit, an interference flag bit communication demand flag bit and a multi-stage alternative frequency point priority flag bit of each network transmission device in a long-time period;
step two, detecting whether the local signal of the peripheral network transmission equipment is interfered by the signal of the peripheral network transmission equipment or the signal of the peripheral network transmission equipment is interfered by the local signal of the peripheral network transmission equipment by suspending sending the local signal of the network transmission equipment and eliminating the self transmission signal; meanwhile, other related network transmission equipment information is forwarded, and whole network information is acquired;
step three, when the network transmission equipment is interfered and simultaneously confirms that the frequency point is a frequency point used by a local machine of the network transmission equipment, the local machine periodically sends a local machine frequency spectrum priority flag bit and an interference flag bit until the interference is eliminated or the network transmission equipment with higher priority than the current network transmission equipment is detected to occupy the frequency point;
step four, when the local machine of the network transmission equipment interferes with other peripheral network transmission equipment and confirms that the frequency point belongs to other network transmission equipment for use, the local machine confirms the usable frequency point by detecting the conditions of other frequency points and simultaneously informs the corresponding network transmission equipment of synchronously changing the used frequency point;
step five, when the network transmission equipment is communicated with a plurality of networks, the remaining resources are switched to a new frequency point for working under the condition of keeping the original frequency point to occupy partial resources for working;
and step six, when the network transmission equipment detects that a plurality of networks working independently exist in the same frequency band, time allocation and frequency point switching are carried out according to the network resource occupation condition and frequency point use priority flag bit statistics, and network separation is realized.
2. The method for spectrum interference deferral selection according to claim 1, wherein in step two, each network transmission device sets a spectrum priority flag and an interference flag bit during transmission; when the network transmission equipment detects that the interference signal exists and the frequency spectrum priority mark is lower than the network transmission equipment, the signal transmission is continuously carried out at the frequency point position; meanwhile, in the transmission process, each network transmission device forwards the information of other related similar devices to realize the whole-network information acquisition.
3. The method for spectrum interference rejection selection according to claim 1, wherein in step three, the local network transmission device obtains a plurality of spare frequency points in real time by detecting clean frequency points and negotiating with the whole network, labels the frequency points by using priorities, and when interference and resource shortage occur, any network transmission device in the network switches to the corresponding clean frequency point synchronously or asynchronously and quickly according to the priorities, so that the network signal is not interrupted and seamless switching is performed.
4. The method as claimed in claim 1, wherein in step four, when the network transmission device detects that there is an interference signal and the spectrum priority flag is higher than itself, the device searches for a clean frequency point by scanning, and simultaneously sends a signal to notify the network transmission device communicating with the device to change the frequency point, and after confirming the change, the network transmission device starts to operate at a new frequency point.
5. The method for spectrum interference deferral selection according to claim 1, wherein in step six, when there is a plurality of network transmission devices in different frequency bands connected, the frequency point switching is performed according to the quality of a single frequency point and the redundancy of resources, so as to realize network convergence.
6. A terminal carrying a processor implementing the method of spectral interference deferral selection according to any one of claims 1 to 5.
7. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the spectral interference deferral selection method of any one of claims 1-5.
8. A spectrum interference deferral control system implementing the spectrum interference deferral selection method of any one of claims 1 to 5.
9. A spectral interference deferral device implementing the spectral interference deferral selection method of any one of claims 1 to 5.
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| US6226277B1 (en) * | 1997-10-14 | 2001-05-01 | Lucent Technologies Inc. | Method for admitting new connections based on usage priorities in a multiple access system for communications networks |
| CN101222376B (en) * | 2007-01-09 | 2010-11-03 | 华为技术有限公司 | Method, system and base station for interference detection and discrimination |
| KR101147611B1 (en) * | 2010-08-20 | 2012-05-23 | 아주대학교산학협력단 | Distributed Dynamic Spectrum Access Method for Avoidance of Co-Channel Interference in Mobile Cellular Networks And Frequency Allocation System in Mobile Cellular Networks Using the Same |
| US9137713B2 (en) * | 2010-09-16 | 2015-09-15 | Qualcomm Incorporated | Apparatus and methods of hand-in to a femto node |
| WO2012171162A1 (en) * | 2011-06-13 | 2012-12-20 | 华为技术有限公司 | Method, apparatus and system for analyzing interference |
| CN102547976B (en) * | 2011-12-23 | 2015-09-02 | 大唐移动通信设备有限公司 | The localization method of global positioning system deflecting base station and device |
| CN104244431B (en) * | 2013-06-24 | 2017-12-19 | 电信科学技术研究院 | Transmission dispatching method and device in cognitive radio system |
| CN103491550B (en) * | 2013-09-17 | 2017-01-11 | 上海师范大学 | Cognitive radio dynamic spectrum distribution method integrated with system overall transmission speed and distribution equity |
| CN104981018B (en) * | 2014-04-03 | 2019-04-26 | 普天信息技术有限公司 | A kind of resource allocation methods of semi-static transmission |
| CN104135736B (en) * | 2014-08-07 | 2017-06-06 | 中国电子科技集团公司第五十四研究所 | Based on cognitive spectrum monitoring and adaptive communication method |
| CN104754678B (en) * | 2015-04-10 | 2020-12-04 | 中国电力科学研究院 | Method for AP to select optimal channel in wireless network |
| CN105873075B (en) * | 2016-04-08 | 2019-05-07 | 江苏中科羿链通信技术有限公司 | The frequency point selecting method of wireless chain topological network node |
| CN107124239B (en) * | 2017-04-21 | 2020-11-17 | 广州小鹏汽车科技有限公司 | Vehicle-mounted central frequency control point interference source detection method |
| US10512094B2 (en) * | 2017-12-28 | 2019-12-17 | Intel Corporation | Assessment and mitigation of radio frequency interference of networked devices |
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